EP3464762B1 - Device for locking and unlocking a manhole cover on a frame by means of a key, with the option of automatic keyless locking of said manhole cover on the frame - Google Patents

Device for locking and unlocking a manhole cover on a frame by means of a key, with the option of automatic keyless locking of said manhole cover on the frame Download PDF

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Publication number
EP3464762B1
EP3464762B1 EP17729185.3A EP17729185A EP3464762B1 EP 3464762 B1 EP3464762 B1 EP 3464762B1 EP 17729185 A EP17729185 A EP 17729185A EP 3464762 B1 EP3464762 B1 EP 3464762B1
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EP
European Patent Office
Prior art keywords
buffer
bolt
key
opening
rotor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17729185.3A
Other languages
German (de)
French (fr)
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EP3464762A1 (en
Inventor
Sylvain Jean-Jacques Daniel Ghislain DEBUCHY
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EJ Emea SAS
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EJ Emea SAS
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Publication date
Application filed by EJ Emea SAS filed Critical EJ Emea SAS
Priority to PL17729185T priority Critical patent/PL3464762T3/en
Publication of EP3464762A1 publication Critical patent/EP3464762A1/en
Application granted granted Critical
Publication of EP3464762B1 publication Critical patent/EP3464762B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B65/00—Locks or fastenings for special use
    • E05B65/006—Locks or fastenings for special use for covers or panels
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers
    • E02D29/1427—Locking devices
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers
    • E02D29/1481—Security devices, e.g. indicating unauthorised opening
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/14—Closures or guards for keyholes
    • E05B17/18—Closures or guards for keyholes shaped as lids or slides
    • E05B17/186—Closures or guards for keyholes shaped as lids or slides sliding
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C1/00—Fastening devices with bolts moving rectilinearly
    • E05C1/08—Fastening devices with bolts moving rectilinearly with latching action
    • E05C1/12—Fastening devices with bolts moving rectilinearly with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B35/00—Locks for use with special keys or a plurality of keys ; keys therefor
    • E05B35/008—Locks for use with special keys or a plurality of keys ; keys therefor for simple tool-like keys

Definitions

  • the present invention relates to a device for locking and unlocking by means of a key of a buffer or cover on a frame, in particular a manhole cover.
  • This lock comprises a rotor mounted for rotation in the buffer, accessible at one of its ends by the through opening and carrying at its opposite end the bolt formed by a substantially rectangular flat transverse arm so that the rotation of the rotor under the The action of the key causes the pivoting in its own plane of the bolt between its captive and disengaged positions in and from the keeper of the frame.
  • the through opening of the buffer coaxial with the end of the rotor which can be engaged with the end of the arm of the wrench, is closed by a stopper returned to bear under the buffer in its closed position.
  • opening through a return spring and the key when introduced into the through opening, causes the depression of the closing cap against the return force of the spring along the rotor whose end is in taken with the end of the wrench arm.
  • the through-opening closing plug prevents debris from passing through the through-opening of the pad which can reach some of the internal components of the lock and make it difficult for the key to pivot the bolt from its locking position of the pad to the frame. its unlocking position of the frame buffer.
  • the plug for closing the through opening of the buffer prevents debris from accumulating in the through opening and blocking it, otherwise the introduction of the key into the through opening of the buffer to operate the bolt. lock would be made impossible.
  • the object of the present invention is to remedy the above drawbacks.
  • the device for locking and unlocking using a key from a buffer on a frame comprising a lock adapted to be secured to the buffer which has a through opening for access to the lock for the key comprising an arm, one end of which allows the lock to be operated when the key is introduced into the opening of the buffer from a locking position in which a bolt of the lock is held captive by a keeper of the frame to lock the buffer in the frame to an unlocked position for which the bolt is disengaged from the strike to allow movement of the pad to its position disengaged from the opening of the frame
  • the lock comprising a drive mechanism connected to the bolt so as to allow the movement of the bolt under the action of the key between its captive positions and disengaged from the strike
  • the bolt of the lock comprising a rod returned to its position captive of the strike by an elastic return member and the drive mechanism cooperating with the bolt under the action of the key to move in translation against the return force of the return member the rod of the bolt to its position disengaged from the keeper
  • the drive mechanism comprises a rotor mounted for rotation in the buffer perpendicularly under the latter, accessible at one of its ends through the opening and a part forming a cam integral with the opposite end of the rotor and engaged in a recess of the rod of the bolt and cooperating with the part forming the cam of the rotor when the latter is operated by the key in engagement with the corresponding end of the rotor to move in translation against the return force of the rotor 'return member the bolt rod to its position released from the strike.
  • the rod of the bolt and the return member are coaxial and housed perpendicular to the rotor in a removable housing fixed under the buffer and the end part of the rotor comprising the cam passes through a wall of the housing located on the internal face of the buffer so that the cam engaged in the recess of the bolt rod is housed in the housing.
  • the rotor cam extends perpendicularly to the longitudinal direction of the bolt shank when the latter occupies its position trapped in the strike.
  • the bolt rod is supported by an internal face of its recess located on the return member side on a lateral face of the rotor adjacent to the cam when the bolt rod occupies its captive position in the keeper.
  • the bolt rod is flat and the housing comprises two removable parts attached to each other, respectively a first portion with a substantially ⁇ -shaped cross section with a flat bottom in which the bolt rod and the bolt are slidably housed. return member and a second part in the form of a flat plate constituting the aforementioned wall of the housing through which the cam passes and to which the two elongated lateral branches of the first part are detachably attached.
  • the second part of the housing comprises a plate secured to an edge of this second part so as to close the end opening of the first part opposite to that allowing the passage of the bevelled end of the rod of the bolt and on which plate rests on one end of the return member formed by a helical compression spring.
  • the second part of the case is removably fixed under the pad.
  • the through opening of the buffer is coaxial with the end of the rotor which can be engaged with the end of the arm of the wrench and in that the key, when introduced into the through opening, causes the plug to be pushed in. closing against the return force of the spring along the rotor whose end engages with the end of the arm of the wrench.
  • a cylindrical barrel fixed under the plug and comprising a transverse end wall through which is made the opening opening of the plug which comprises a circular central orifice and two diametrically opposed grooves opening into the circular central orifice and the closing plug is in the form of a cylindrical section mounted to slide guided in the cylindrical barrel and on the rotor of the lock and comprising two parts of cylindrical ends separated from each other by a flange which can slide in the cylindrical barrel, one of the end portions of the closure cap comprising two diametrically opposed tenons engaged respectively in the two grooves of the through opening with the flange resting under the transverse wall of the barrel when the closure cap occupies its position of closing the opening opening, the tenons of the closing cap being disengaged from the through opening when the arm of the key is engaged with the end of the latch rotor to rotate the rotor to its position at which the latch bolt is disengaged from the frame strike.
  • the closure cap is rotatably attached to the end of the rotor of the lock.
  • the return spring of the closing cap is housed in the cylindrical barrel by being mounted prestressed between the flange of the cylindrical stopper and an internal shoulder of the cylindrical barrel.
  • the transverse end wall of the cylindrical barrel is part of a cylindrical sleeve attached to the corresponding end portion of the cylindrical barrel.
  • the cylindrical barrel is integral with the second part in the form of a flat plate of the housing and perpendicular to the latter.
  • the key comprises at the tubular end of its arm two diametrically opposed lugs of a shape conjugated to the grooves of the through opening to allow engagement of the tubular end of the arm of the wrench through the through opening by pressing the closing cap in the cylindrical barrel against the return force of the spring and to a position in which the two pins of the key are brought to bear under the transverse wall of the cylindrical barrel by rotation of the key engaged with the rotor of the lock and held under this wall by the closing cap and the return force exerted by the spring on the collar of the closing cap.
  • the locking and unlocking device of the invention which will be described below is intended to equip a plug or cover 1 making it possible to close a frame or frame 2 delimiting the access opening in particular to a roadway or buried inspection manhole.
  • the locking and unlocking device can be operated by a key 3 as will be seen later to unlock the buffer 1 of the frame 2 and disengage it from this frame to access the manhole cover and, if necessary, lock it again to this frame.
  • the buffer 1 has a square shape and is housed in its closed position in a square opening of the frame 2, but the buffer 1 can be circular to ensure the closing of the circular opening of the corresponding frame 2. Any other form of buffer. manhole cover can be considered as rectangular or triangular.
  • the buffer 1 is pivotally mounted at one of its straight sides to one adjacent to the side walls 2a of the frame 2 about a hinge axis A as is known per se to allow the tilting of the buffer. 1 relative to the frame 2 between its open and closed positions of this frame and retain the buffer to the frame 2 when the buffer occupies its raised upright position for release from this opening.
  • the articulation of the pad 1 to the frame 2 may be of the type allowing the removal of the pad 1 from this frame to the raised upright position of the pad 1.
  • the pad 1 has its upper wall forming a substantially planar web 1a comprising on its outer face non-slip protruding elements 1b.
  • the buffer 1 further comprises an opening 4 opening outwards at the level of the flat upper face 1c of the wall 1a and allowing access by the key 3 to a lock 5 fixed under the wall 1a of the buffer 1.
  • the lock 5 is located opposite the side wall 2a of the frame 2 opposite to that of articulation of the buffer 1 to this frame. For a triangular buffer in particular, the lock will be located opposite a wall adjacent to that of the joint.
  • the key 3 comprises a longitudinal arm or rod 6, one end of which is provided with a socket 7 coaxial with the arm 6 and the opposite end is provided with an operating handle 8 extending perpendicularly on either side of the arm 6.
  • the socket 7 has an internal recess 9 making it possible to engage with a rotor 10 rotatably mounted in the pad 1 to maneuver the latch 5 from a locking position in which a bolt 11 of the latch 5 is held captive.
  • 'a keeper 12 of the frame 2 to lock the cover 1 to the frame 2 in an unlocking position for which the bolt 11 is released from the keeper 12 to allow the removal of the cover 1 from the frame 2.
  • the keeper 12 is formed by a recess made in an internal thickness of the side wall 2a of the frame opposite to the articulation axis A.
  • the rotor 10 of the lock 5 extends perpendicularly to the upper wall 1a of the cover 1 under the latter and is connected, at its end opposite to that intended to engage with the socket 7 of the key 3, to the bolt 11 of so as to allow the movement of the bolt 11 under the action of the key 3, when the socket 7 is engaged with the end 10b of the rotor 10, between its captive positions and released from the keeper 12 of the frame 2.
  • the reference V designates a jack for assisting the opening of the buffer and mounted articulated between the buffer 1 and the side wall 2a of the frame 1 provided with the articulation A.
  • the reference B designates a crutch for retaining the buffer 1 at its standing position of release of the opening of the frame 2 and having one of its ends hingedly connected to the side wall 2a of the frame 2 provided with the articulation A and its opposite end shaped and able to cooperate with a rib 1n of the buffer 1 under the latter to block the buffer 1 in its standing position.
  • An elastic support J is fixed under the buffer 1 and comes to bear on an internal peripheral nevure 2n of the frame 2 when the buffer 1 closes the frame 2.
  • This elastic support J can have a sealing function.
  • the bolt 11 of the latch 5 comprises a rod 11a, preferably constituted by an elongated flat bar, housed sliding guided in a housing 13 removably fixed under the cover 1, the rod 11a extending in a substantially direction. parallel to the upper wall 1a of the buffer 1 and transverse to the side wall 2a of the frame 2 provided with the articulation A when the latter is articulated.
  • the rod 11a of the bolt 11 is returned to its position of engagement in the keeper 12 of the frame 2 by an elastic member 14 preferably constituted by a helical compression spring housed in the housing 13 coaxially with the rod 11a of the bolt 11 and perpendicular to the rotor 10.
  • the housing 13 comprises two parts 15, 16 removably fixed to one another by fixing screws 17 and respectively comprising a first elongated part 15 with a substantially ⁇ -shaped cross section with a flat bottom 18 in which are slidably housed guided the rod 11a of the bolt 11 and the return member 14 and a second part in the form of a flat plate 16 under which the two elongated lateral flat branches 19 of the first part 15 by screws 17 anchored in threaded holes 20 of the second part 16.
  • the second part 16 preferably has a generally rectangular shape (depending on the ribbing of the cast iron on the underside buffer, this shape may be different).
  • the second part 16 of the housing 13 comprises a plate 21 integral with an edge of this second part perpendicular to the latter so as to close off the end opening of the first part 15 opposite to that allowing the passage of the end. bevelled 11b of the rod 11a of the bolt 11 and on which the plate 21 bears one end of the return member 14, the opposite end portion of which is housed in a U-shaped end notch of the rod 11a bolt 11.
  • the second part 16 of the housing 13 is removably attached to four feet 22 which may come from the foundry projecting under the upper wall 1a of the cover 1. More precisely, the substantially square flat plate of the second part 16 of the housing 13 comprises four holes 23. made at the four corners of this plate and allowing the passage of four screws 16a, which can be anchored respectively in four tapped holes formed in the end parts of the four feet 22 of the plug 1.
  • the rod 11a of the bolt 11 comprises a through recess 24 formed in the vicinity of the central part of this rod and the role of which will be explained below.
  • the rotor 10 comprises, integral with its end 10a opposite to the end 10b which can be engaged with the key 3, a part forming a cam 25 engaged in the recess 24 of the rod 11a of the bolt 11, which recess 24 is shaped for cooperate with the part forming the cam 25 of the rotor 10 when the latter is operated by the key 3 to translate the rod 11a of the bolt 11 in the housing 13 to its position released from the keeper 12 against the return force of the elastic return member 14.
  • the part forming the cam 25 of the rotor 10 has its actual cam 25a extending perpendicularly to the longitudinal direction of the rod 11a of the bolt 11 when the latter occupies its engaged position in the keeper 12.
  • the rod 11a of the bolt 11 is supported by an internal face 24a of its recess 24 located on the side of the return member 14 on a lateral face 25b of the part forming a cam 25 and adjacent to the cam 25a when the rod 11a of the bolt 11 occupies its engaged position in the keeper 12 to thereby constitute a stopper for retaining the rod 11a of the bolt 11 in this position under the action of the return member 14.
  • the end portion of the rotor 10 having the cam member end 10a 25 passes through the planar wall of the second portion 16 of the housing 13 as will be seen later so that the cam member 25 can be engaged in the recess. 24 of the rod of the bolt 11 and, consequently, is housed in the housing 13.
  • the lock 5 comprises a cylindrical barrel 26 secured to the upper face of the flat plate of the second part 16 of the housing 13 extending perpendicularly to this face so that the cylindrical barrel 26 extends in a fixed position perpendicular to the wall 1a of the buffer 1 below this wall.
  • the rotor 10 extends coaxially into the cylindrical barrel 26 with its smaller diameter lower cylindrical end portion passing through a lower central bore 27 of the cylindrical barrel 26 and the planar wall of the second portion 16 of the housing 13 so that the workpiece forming cam 25 is housed in the recess 24 of the rod of the bolt 11.
  • the rotor 10 can rotate under the action of the key 3 in the bore 27 of the cylindrical barrel 26 to angularly drive the part forming the cam 25 between its two positions of withdrawal of the rod 11a of the bolt 11 of the keeper 12 and of engagement of the rod 11a of the bolt 11 in this keeper.
  • opening 4 which comprises a circular central orifice 4a with a diameter slightly greater than the external diameter of the socket 7 of the key 3 and two diametrically opposed grooves 4b opening into the circular central orifice 4a.
  • the cylindrical sleeve 28 comprises, opposite its end wall 29, an annular base 30 comprising two diametrically opposed bores 31 in which two cylindrical pins 32 are engaged, such as for example grooved pins, force-fitted respectively in two bores 33 of the cylindrical barrel 26 to fix the cylindrical sleeve 28 to the cylindrical barrel 26 with the transverse end wall 29 resting on the annular end of the cylindrical barrel 26.
  • the lock 5 also comprises a plug 34 making it possible to close the through orifice 4.
  • the closing plug 34 is in the form of a cylindrical section comprising two parts of cylindrical ends 35, 36 separated from each other by a collar. 37 slidable in the cylindrical barrel 26, the upper one 35 of the parts cylindrical ends of the closure cap 34 comprising two diametrically opposed tenons 38 which can engage with the cylindrical end portion 35 in the circular central orifice 4a and the grooves 4b of the cylindrical sleeve 28 to close the through orifice 4 with the collar 37 resting under the transverse end wall 29 of the cylindrical sleeve 28.
  • a helical compression spring 39 is pre-stressed between the flange 37 of the closure cap 34 and an internal shoulder 40 of the cylindrical barrel 26 so as to exert a force to return the cap 34 to its position of closing the through opening 4
  • the plug 34 is made captive, that is to say that it cannot be removed from the plug 1.
  • the closure plug 34 can be axially guided in a guided manner along the larger diameter end portion 10b of the rotor 10 against the return force of the spring 39 when the socket 7 of the wrench 3 is inserted. through the through opening 4.
  • the closure plug 34 has a central through orifice 41 of a shape complementary to the external shape of the end part 10b of the rotor 10.
  • cylindrical end part 10b of the rotor 10 comprises a flat 10d extending all the way along the end part 10b which can cooperate with a flat 41a of the through orifice 41 of the closure plug 34.
  • D ' other forms of key fingerprints may exist.
  • end portion 10b of the rotor comprises a second flat 10e of lesser width than that of the flat 10d, connected to the latter and constituting a keying device cooperating with a second flat 41b of the orifice 41 of the closure plug 34.
  • closure plug 34 can slide axially along the rotor 10 against the return force of the spring 39 by being fixed in rotation to this end part.
  • the rotor 10 is axially held in the cylindrical barrel 26 by the part forming a cam 25 housed in the recess 24 of the bolt 11 between the bottom wall 18 of the first part 15 of the housing 13 and the lower end of the cylindrical barrel 26, while being able to turn at a limited angle in this barrel under the action of key 3.
  • the recess 9 of the socket 7 of the key 3 is of a shape complementary to that of the end part 10b of the rotor 10, that is to say in the example illustrated that the recess 9 comprises a flat 9a able to cooperate with the flat 10d of the end part 10b of the rotor 10 and a second flat of smaller width 9b able to cooperate with the flat 10e of the end part 10b of the rotor 10 together to constitute a foolproof means.
  • the socket 7 of the key 3 further comprises two diametrically opposed lugs 7a projecting on either side of this socket and of a shape corresponding respectively to the two diametrically opposed grooves 4b of the through opening 4.
  • the rotor 10 is engaged in the cylindrical barrel 26 without its camming part 25 so that its cylindrical lower end part 10a is engaged in the bore 27 of the cylindrical barrel 26 then the camming part 25 is fixed to the end of the rotor 10 by a central fixing screw, not shown.
  • the bolt 11 and the elastic return member 14 are mounted in the first part 15 of the housing 13 and the rotor 10 is engaged in the recess 24 of the bolt 11.
  • the first part 15 is then fixed by the fixing screws. 17 under the plate of the second part 16 of the housing 13 and the spring 39 is engaged in the cylindrical barrel 26.
  • the closing plug 34 is disposed above the spring 39 so that the collar 37 of this plug is in bearing on the upper end coil of this spring.
  • the cylindrical sleeve 28 is engaged on the upper end portion of the cylindrical barrel 26 by positioning the through orifice 4 so that the tenons 38 of the stopper 34 are engaged respectively in the two grooves 4b of the cylindrical sleeve 28 which is then fixed to the cylindrical barrel 26 by the cylindrical pins 32 passing through the bores 31 of the circular base 30 of the cylindrical sleeve 28 and the bores 33 of the cylindrical barrel 26.
  • the assembled assembly of the casing 13, cylindrical barrel 26, closure cap 34 and cylindrical sleeve 38 is engaged under the wall 1a of the buffer 1 so that the cylindrical sleeve 28 is engaged in the bore 1d of the wall 1a and the housing 13 is fixed by means of its second part 16 to the four feet 22 of the cover 1.
  • the bolt 11 occupies its position in which it is trapped, by its bevelled end 11a, of the keeper 12 of the frame 2 as is best seen from the figure 4 .
  • the end part 10b of the rotor 10 is coupled to the socket 7 of the key 3 which is then turned by about a quarter of a turn to also turn the plug 34 in the barrel 26 by a quarter of a turn so that the two pins 7a of the sleeve 7 can come to bear under the end wall 29 of the cylindrical sleeve 28 and are held under the latter by the return force exerted by the spring 39 on the flange 27 of the plug 34, the pins 7a thus being trapped between the wall 29 and collar 37, retaining key 3 to buffer 1.
  • the part forming the cam 25 causes by its cam 25a the guided translational movement of the rod 11a of the bolt 11 in the housing 13 against the return force of the elastic member 14 so as to disengage the bevelled end 11a of this rod from the keeper 12 of the frame 2.
  • the pressure exerted by the spring 39 on the cap 34 to retain the key 3 trapped in the buffer 1 is sufficient for the part forming the cam 25 of the rotor 10 to remain in its position for holding the rod 11a of the bolt 11 in its retracted position in the box 13 out of the strike 12.
  • the operator can then, using the key 3, lift the buffer 1 to disengage it from the frame 2 by pivoting around the articulation axis A.
  • the operator can remove the key 3 from this buffer by turning it a quarter of a turn so as to disengage the two pins 7a of the key 3 from the grooves 4b of the cylindrical sleeve 28 , then bringing the room forming a cam 25 of the rotor 10 in its position at which the rod 11a of the bolt 11 is returned by the elastic return member 14 to its position projecting from the housing 13.
  • the operator manually switches the pad 1 from its standing position.
  • the bevelled part 11a of the rod of the bolt 11 hits a face of a projecting part of the frame 2 located above the keep 12 to cause the translational movement of the rod 11a of the bolt 11 partly in the housing 13 against the return force of the elastic member 14 then this member returns the rod 11a of the bolt 11 to its position of engagement of the bevelled end 11b in the keeper 12 of frame 2 to re-lock buffer 1 to this frame.
  • buffer 1 is automatically locked to frame 2 without using key 3.
  • the key 3 can be held captive of this buffer and the operator can tilt the buffer to its position for closing the frame 1.
  • the operator turns the key 3 a quarter of a turn to cause the angular pivoting of the part forming the cam 25 to its position at which the elastic member 14 can return the rod of the bolt 11 to its position engaged in the strike 12 of frame 2 in order to lock the buffer 1 to this frame.
  • the rotor 10 and the part forming the cam 25 can be replaced by any other drive mechanism housed in the buffer 1 and which, under the action of the key 3, allows the translational movement of the bolt 11 between its engaged positions in the keeper 12 and released from it.
  • the device described above of the invention uses a lock which allows the automatic locking of the buffer 1 to the frame 2 during the tilting of this buffer to its closed position of the frame 2 without using the key to operate this lock. while ensuring the anti-fouling function of the access opening to this lock in the closed position of the frame 2 by the buffer 1.
  • the advantages of the invention are the possibility of quickly closing and locking the buffer in the frame and to prohibit the forgetting on the site of foreign bodies, such as a removable plug inserted in the through opening of the buffer and removed from this opening to access the rotor in order to unlock the buffer from the frame.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
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  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Description

La présente invention concerne un dispositif de verrouillage et de déverrouillage à l'aide d'une clé d'un tampon ou couvercle sur un cadre, notamment de regard de chaussée.The present invention relates to a device for locking and unlocking by means of a key of a buffer or cover on a frame, in particular a manhole cover.

On connait par le document FR 2 979 368 un tel dispositif comprenant un verrou solidaire du tampon qui présente une ouverture débouchante d'accès au verrou pour la clé qui comporte un bras dont une extrémité permet de manœuvrer le verrou lorsque la clé est introduite dans l'ouverture du tampon d'une position de verrouillage dans laquelle un pêne du verrou est retenu prisonnier d'une gâche du cadre à une position de déverrouillage pour laquelle le pêne est dégagé de la gâche.We know from the document FR 2 979 368 such a device comprising a lock integral with the buffer which has a through opening for access to the lock for the key which comprises an arm, one end of which makes it possible to operate the lock when the key is inserted into the opening of the buffer from a position of locking in which a bolt of the latch is held captive of a keeper of the frame in an unlocking position for which the bolt is released from the keeper.

Ce verrou comprend un rotor monté à rotation dans le tampon, accessible à l'une de ses extrémités par l'ouverture débouchante et portant à son extrémité opposée le pêne constitué par un bras transversal plat sensiblement rectangulaire de manière que la rotation du rotor sous l'action de la clé provoque le pivotement dans son propre plan du pêne entre ses positions prisonnière et dégagée dans et de la gâche du cadre.This lock comprises a rotor mounted for rotation in the buffer, accessible at one of its ends by the through opening and carrying at its opposite end the bolt formed by a substantially rectangular flat transverse arm so that the rotation of the rotor under the The action of the key causes the pivoting in its own plane of the bolt between its captive and disengaged positions in and from the keeper of the frame.

En outre, l'ouverture débouchante du tampon, coaxiale avec l'extrémité du rotor pouvant être en prise avec l'extrémité du bras de la clé, est obturée par un bouchon rappelé en appui sous le tampon à sa position de fermeture de l'ouverture débouchante par un ressort de rappel et la clé, lorsque qu'introduite dans l'ouverture débouchante, provoque l'enfoncement du bouchon de fermeture à l'encontre de la force de rappel du ressort le long du rotor dont l'extrémité est en prise avec l'extrémité du bras de la clé.In addition, the through opening of the buffer, coaxial with the end of the rotor which can be engaged with the end of the arm of the wrench, is closed by a stopper returned to bear under the buffer in its closed position. opening through a return spring and the key, when introduced into the through opening, causes the depression of the closing cap against the return force of the spring along the rotor whose end is in taken with the end of the wrench arm.

Le bouchon de fermeture de l'ouverture débouchante empêche des détritus de traverser l'ouverture débouchante du tampon pouvant atteindre certains des composants internes du verrou et conduire à rendre difficile le pivotement par la clé du pêne de sa position de verrouillage du tampon au cadre à sa position de déverrouillage de ce tampon du cadre.The through-opening closing plug prevents debris from passing through the through-opening of the pad which can reach some of the internal components of the lock and make it difficult for the key to pivot the bolt from its locking position of the pad to the frame. its unlocking position of the frame buffer.

En outre, le bouchon de fermeture de l'ouverture débouchante du tampon empêche des détritus de s'accumuler dans l'ouverture débouchante et de l'obstruer, sinon l'introduction de la clé dans l'ouverture débouchante du tampon pour manoeuvrer le pêne du verrou serait rendue impossible.In addition, the plug for closing the through opening of the buffer prevents debris from accumulating in the through opening and blocking it, otherwise the introduction of the key into the through opening of the buffer to operate the bolt. lock would be made impossible.

Cependant, la structure du verrou du tampon à bouchon de fermeture de l'ouverture débouchante de ce tampon est relativement complexe et fastidieuse à assembler sous le tampon.However, the structure of the latch of the plug with a plug for closing the through opening of this plug is relatively complex and tedious to assemble under the plug.

Par ailleurs, lorsque le tampon est désengagé de l'ouverture du cadre à sa position relevée avec la clé retirée du tampon, le pêne plat du verrou occupe sa position correspondant à celle de verrouillage du tampon au cadre. Dans ces conditions, il y a un risque que l'opérateur, notamment lorsque le tampon est articulé à l'un des côtés du cadre, provoque accidentellement le basculement du tampon à sa position de fermeture du cadre, endommageant alors le pêne du verrou et, par conséquent le verrou, en heurtant violemment la paroi latérale correspondant du cadre. Le document GB 2 275 729 divulgue un autre exemple de dispositif de verrouillage.Furthermore, when the buffer is disengaged from the opening of the frame in its raised position with the key removed from the buffer, the flat bolt of the lock occupies its position corresponding to that of locking the buffer to the frame. Under these conditions, there is a risk that the operator, in particular when the buffer is articulated to one of the sides of the frame, accidentally causes the buffer to tilt to its closed position of the frame, then damaging the bolt of the lock and , therefore the lock, violently striking the corresponding side wall of the frame. The document GB 2 275 729 discloses another example of a locking device.

La présente invention a pour but de remédier aux inconvénients ci-dessus.The object of the present invention is to remedy the above drawbacks.

A cet effet, selon l'invention, le dispositif de verrouillage et de déverrouillage à l'aide d'une clé d'un tampon sur un cadre, comprenant un verrou adapté à être solidaire du tampon qui présente une ouverture débouchante d'accès au verrou pour la clé comportant un bras dont une extrémité permet de manoeuvrer le verrou lorsque la clé est introduite dans l'ouverture du tampon d'une position de verrouillage dans laquelle un pêne du verrou est retenu prisonnier d'une gâche du cadre pour verrouiller le tampon dans le cadre à une position de déverrouillage pour laquelle le pêne est dégagé de la gâche pour permettre le déplacement du tampon à sa position dégagée de l'ouverture du cadre, le verrou comprenant un mécanisme d'entraînement relié au pêne de manière à permettre le déplacement du pêne sous l'action de la clé entre ses positions prisonnière et dégagée de la gâche, le pêne du verrou comprenant une tige rappelée à sa position prisonnière de la gâche par un organe élastique de rappel et le mécanisme d'entraînement coopérant avec le pêne sous l'action de la clé pour déplacer en translation à l'encontre de la force de rappel de l'organe de rappel la tige du pêne à sa position dégagée de la gâche, le pêne du verrou, lorsque la clé est retirée du tampon à sa position dégagée de l'ouverture du cadre, permettant le verrouillage automatique par l'organe élastique de rappel du tampon au cadre lors de l'introduction du tampon dans le cadre et l'ouverture débouchante du tampon, étant obturée par un bouchon imperdable rappelé en appui sous le tampon à sa position de fermeture de l'ouverture débouchante par un ressort de rappel.To this end, according to the invention, the device for locking and unlocking using a key from a buffer on a frame, comprising a lock adapted to be secured to the buffer which has a through opening for access to the lock for the key comprising an arm, one end of which allows the lock to be operated when the key is introduced into the opening of the buffer from a locking position in which a bolt of the lock is held captive by a keeper of the frame to lock the buffer in the frame to an unlocked position for which the bolt is disengaged from the strike to allow movement of the pad to its position disengaged from the opening of the frame, the lock comprising a drive mechanism connected to the bolt so as to allow the movement of the bolt under the action of the key between its captive positions and disengaged from the strike, the bolt of the lock comprising a rod returned to its position captive of the strike by an elastic return member and the drive mechanism cooperating with the bolt under the action of the key to move in translation against the return force of the return member the rod of the bolt to its position disengaged from the keeper, the bolt of the lock, when the key is withdrawn from the pad in its position released from the opening of the frame, allowing automatic locking by the elastic member for returning the pad to the frame when the pad is introduced into the frame and the through opening of the buffer, being closed by a captive stopper returned to bear under the buffer in its closed position of the through opening by a return spring.

Le mécanisme d'entraînement selon l'invention comprend un rotor monté à rotation dans le tampon perpendiculairement sous celui-ci, accessible à l'une de ses extrémités par l'ouverture et une pièce formant came solidaire de l'extrémité opposée du rotor et engagée dans un évidement de la tige du pêne et coopérant avec la pièce formant came du rotor lorsque ce dernier est manœuvré par la clé en prise avec l'extrémité correspondante du rotor pour déplacer en translation à l'encontre de la force de rappel de l'organe de rappel la tige du pêne à sa position dégagée de la gâche.The drive mechanism according to the invention comprises a rotor mounted for rotation in the buffer perpendicularly under the latter, accessible at one of its ends through the opening and a part forming a cam integral with the opposite end of the rotor and engaged in a recess of the rod of the bolt and cooperating with the part forming the cam of the rotor when the latter is operated by the key in engagement with the corresponding end of the rotor to move in translation against the return force of the rotor 'return member the bolt rod to its position released from the strike.

La tige du pêne et l'organe de rappel sont coaxiaux et logés perpendiculairement au rotor dans un boîtier amoviblement fixé sous le tampon et la partie d'extrémité du rotor comportant la came traverse une paroi du boîtier située côté face interne du tampon de manière que la came engagée dans l'évidemment de la tige du pêne soit logée dans le boîtier.The rod of the bolt and the return member are coaxial and housed perpendicular to the rotor in a removable housing fixed under the buffer and the end part of the rotor comprising the cam passes through a wall of the housing located on the internal face of the buffer so that the cam engaged in the recess of the bolt rod is housed in the housing.

La came du rotor s'étend perpendiculairement à la direction longitudinale de la tige du pêne lorsque ce dernier occupe sa position prisonnière de la gâche.The rotor cam extends perpendicularly to the longitudinal direction of the bolt shank when the latter occupies its position trapped in the strike.

La tige du pêne est en appui par une face interne de son évidemment située côté organe de rappel sur une face latérale du rotor adjacente à la came lorsque la tige du pêne occupe sa position prisonnière dans la gâche.The bolt rod is supported by an internal face of its recess located on the return member side on a lateral face of the rotor adjacent to the cam when the bolt rod occupies its captive position in the keeper.

La tige du pêne est plate et le boîtier comprend deux parties amoviblement fixées l'une à l'autre respectivement une première partie à section transversale sensiblement en forme de Ω à fond plat dans laquelle sont logés à coulissement guidé la tige du pêne et l'organe de rappel et une seconde partie en forme de plaque plane constituant la paroi précitée du boîtier traversée par la came et à laquelle sont amoviblement fixées les deux branches latérales longilignes de la première partie.The bolt rod is flat and the housing comprises two removable parts attached to each other, respectively a first portion with a substantially Ω-shaped cross section with a flat bottom in which the bolt rod and the bolt are slidably housed. return member and a second part in the form of a flat plate constituting the aforementioned wall of the housing through which the cam passes and to which the two elongated lateral branches of the first part are detachably attached.

La seconde partie du boîtier comprend une plaquette solidaire d'un bord de cette seconde partie de manière à obturer l'ouverture d'extrémité de la première partie opposée à celle autorisant le passage de l'extrémité biseautée de la tige du pêne et sur laquelle plaquette est en appui une extrémité de l'organe de rappel constitué par une ressort hélicoïdal de compression.The second part of the housing comprises a plate secured to an edge of this second part so as to close the end opening of the first part opposite to that allowing the passage of the bevelled end of the rod of the bolt and on which plate rests on one end of the return member formed by a helical compression spring.

La seconde partie du boîtier est amoviblement fixée sous le tampon.The second part of the case is removably fixed under the pad.

L'ouverture débouchante du tampon est coaxiale avec l'extrémité du rotor pouvant être en prise avec l'extrémité du bras de la clé et en ce que la clé, lorsqu'introduite dans l'ouverture débouchante, provoque l'enfoncement du bouchon de fermeture à l'encontre de la force de rappel du ressort le long du rotor dont l'extrémité est en prise avec l'extrémité du bras de la clé.The through opening of the buffer is coaxial with the end of the rotor which can be engaged with the end of the arm of the wrench and in that the key, when introduced into the through opening, causes the plug to be pushed in. closing against the return force of the spring along the rotor whose end engages with the end of the arm of the wrench.

Un fût cylindrique fixé sous le tampon et comportant une paroi d'extrémité transversale au travers de laquelle est réalisée l'ouverture débouchante du tampon qui comprend un orifice central circulaire et deux rainures diamétralement opposées débouchant dans l'orifice central circulaire et le bouchon de fermeture est en forme de tronçon cylindrique monté à coulissement guidé dans le fût cylindrique et sur le rotor du verrou et comportant deux parties d'extrémités cylindriques séparées l'une de l'autre par une collerette pouvant coulisser dans le fût cylindrique, l'une des parties d'extrémités du bouchon de fermeture comportant deux tenons diamétralement opposés engagés respectivement dans les deux rainures de l'ouverture débouchante avec la collerette en appui sous la paroi transversale du fût lorsque le bouchon de fermeture occupe sa position d'obturation de l'ouverture débouchante, les tenons du bouchon de fermeture étant désengagés de l'ouverture débouchante lorsque le bras de la clé est en prise avec l'extrémité du rotor du verrou pour entrainer en rotation le rotor à sa position à laquelle le pêne du verrou est désengagé de la gâche du cadre.A cylindrical barrel fixed under the plug and comprising a transverse end wall through which is made the opening opening of the plug which comprises a circular central orifice and two diametrically opposed grooves opening into the circular central orifice and the closing plug is in the form of a cylindrical section mounted to slide guided in the cylindrical barrel and on the rotor of the lock and comprising two parts of cylindrical ends separated from each other by a flange which can slide in the cylindrical barrel, one of the end portions of the closure cap comprising two diametrically opposed tenons engaged respectively in the two grooves of the through opening with the flange resting under the transverse wall of the barrel when the closure cap occupies its position of closing the opening opening, the tenons of the closing cap being disengaged from the through opening when the arm of the key is engaged with the end of the latch rotor to rotate the rotor to its position at which the latch bolt is disengaged from the frame strike.

Le bouchon de fermeture est solidaire en rotation de l'extrémité du rotor du verrou.The closure cap is rotatably attached to the end of the rotor of the lock.

Le ressort de rappel du bouchon de fermeture est logé dans le fût cylindrique en étant monté précontraint entre la collerette du bouchon cylindrique et un épaulement interne du fût cylindrique.The return spring of the closing cap is housed in the cylindrical barrel by being mounted prestressed between the flange of the cylindrical stopper and an internal shoulder of the cylindrical barrel.

La paroi d'extrémité transversale du fût cylindrique fait partie d'un manchon cylindrique fixé à la partie d'extrémité correspondante du fût cylindrique.The transverse end wall of the cylindrical barrel is part of a cylindrical sleeve attached to the corresponding end portion of the cylindrical barrel.

Le fût cylindrique est solidaire de la seconde partie en forme de plaque plane du boîtier et perpendiculairement à celle-ci.The cylindrical barrel is integral with the second part in the form of a flat plate of the housing and perpendicular to the latter.

La clé comporte à l'extrémité tubulaire de son bras deux ergots diamétralement opposés de forme conjuguée aux rainures de l'ouverture débouchante pour permettre l'engagement de l'extrémité tubulaire du bras de la clé au travers de l'ouverture débouchante en enfonçant le bouchon de fermeture dans le fût cylindrique à l'encontre de la force de rappel du ressort et jusqu'à une position à laquelle les deux ergots de la clé sont amenés en appui sous la paroi transversale du fût cylindrique par rotation de la clé en prise avec le rotor du verrou et maintenus sous cette paroi par le bouchon de fermeture et la force de rappel exercée par le ressort sur la collerette du bouchon de fermeture.The key comprises at the tubular end of its arm two diametrically opposed lugs of a shape conjugated to the grooves of the through opening to allow engagement of the tubular end of the arm of the wrench through the through opening by pressing the closing cap in the cylindrical barrel against the return force of the spring and to a position in which the two pins of the key are brought to bear under the transverse wall of the cylindrical barrel by rotation of the key engaged with the rotor of the lock and held under this wall by the closing cap and the return force exerted by the spring on the collar of the closing cap.

L'invention sera mieux comprise, et d'autres buts, caractéristiques, détails et avantages de celle-ci apparaîtront plus clairement dans la description explicative qui va suivre faite en référence aux dessins annexés donnés uniquement à titre d'exemple illustrant un mode de réalisation de l'invention et dans lesquels :

  • la figure 1 est une vue de dessus d'un tampon monté en position verrouillée sur un cadre pour regard de chaussée ;
  • la figure 2 est une vue de dessous de l'ensemble à tampon et cadre de la figure 1 ;
  • la figure 3 est une vue en coupe suivant la ligne III-III de la figure 2 ;
  • la figure 4 est une vue agrandie de la partie cerclée en IV de la figure 3 ;
  • la figure 5 est une vue en perspective de dessous de l'ensemble à tampon et cadre de la figure 1 ;
  • la figure 6 est une vue agrandie de la partie cerclée en VI de la figure 5 ;
  • la figure 7 est une vue en perspective éclatée du verrou de l'invention ;
  • la figure 8 est une vue en perspective du verrou de la figure 7 en position assemblée ;
  • la figure 9 est une vue semblable à celle de la figure 8 représentant la clé de déverrouillage engagée dans le verrou ;
  • la figure 10 est une vue en perspective de la clé de déverrouillage du tampon ; et
  • la figure 11 est une vue de la clé de déverrouillage suivant la flèche XI de la figure 10.
The invention will be better understood, and other objects, characteristics, details and advantages thereof will emerge more clearly in the explanatory description which will follow given with reference to the appended drawings given solely by way of example illustrating one embodiment. of the invention and in which:
  • the figure 1 is a top view of a buffer mounted in the locked position on a frame for a manhole cover;
  • the figure 2 is a bottom view of the buffer and frame assembly of the figure 1 ;
  • the figure 3 is a sectional view along line III-III of the figure 2 ;
  • the figure 4 is an enlarged view of the part circled in IV of the figure 3 ;
  • the figure 5 is a perspective view from below of the buffer and frame assembly of the figure 1 ;
  • the figure 6 is an enlarged view of the part circled in VI of the figure 5 ;
  • the figure 7 is an exploded perspective view of the lock of the invention;
  • the figure 8 is a perspective view of the lock of the figure 7 in assembled position;
  • the figure 9 is a view similar to that of the figure 8 representing the unlocking key engaged in the lock;
  • the figure 10 is a perspective view of the buffer unlocking key; and
  • the figure 11 is a view of the unlocking key along arrow XI of the figure 10 .

Le dispositif de verrouillage et de déverrouillage de l'invention qui va être décrit ci-dessous est destiné à équiper un tampon ou couvercle 1 permettant d'obturer un cadre ou châssis 2 délimitant l'ouverture d'accès notamment à un regard de chaussée ou de visite enterré.The locking and unlocking device of the invention which will be described below is intended to equip a plug or cover 1 making it possible to close a frame or frame 2 delimiting the access opening in particular to a roadway or buried inspection manhole.

Le dispositif de verrouillage et de déverrouillage peut être actionné par une clé 3 comme on le verra ultérieurement pour déverrouiller le tampon 1 du cadre 2 et le désengager de ce cadre pour accéder au regard de chaussée et, au besoin, le verrouiller à nouveau à ce cadre. Le tampon 1 présente une forme carrée et est logé à sa position de fermeture dans une ouverture carrée du cadre 2, mais le tampon 1 peut être circulaire pour assurer la fermeture de l'ouverture circulaire du cadre correspondant 2. Toute autre forme de tampon de regard de chaussée peut être envisagée comme rectangulaire ou triangulaire.The locking and unlocking device can be operated by a key 3 as will be seen later to unlock the buffer 1 of the frame 2 and disengage it from this frame to access the manhole cover and, if necessary, lock it again to this frame. The buffer 1 has a square shape and is housed in its closed position in a square opening of the frame 2, but the buffer 1 can be circular to ensure the closing of the circular opening of the corresponding frame 2. Any other form of buffer. manhole cover can be considered as rectangular or triangular.

En outre, le tampon 1 est monté pivotant à l'un de ses côtés droits à l'une adjacente des parois latérales 2a du cadre 2 autour d'un axe d'articulation A comme cela est connu en soi pour permettre le basculement du tampon 1 relativement au cadre 2 entre ses positions d'ouverture et de fermeture de ce cadre et retenir le tampon au cadre 2 lorsque le tampon occupe sa position relevée debout de dégagement de cette ouverture. Cependant, l'articulation du tampon 1 au cadre 2 peut être du type permettant le retrait du tampon 1 de ce cadre à la position relevée debout du tampon 1. On peut imaginer mettre ce verrou sur un dispositif non articulé dont le tampon serait manœuvré par un mouvement "tiré-glissé" pour le mettre dans l'ouverture du cadre.In addition, the buffer 1 is pivotally mounted at one of its straight sides to one adjacent to the side walls 2a of the frame 2 about a hinge axis A as is known per se to allow the tilting of the buffer. 1 relative to the frame 2 between its open and closed positions of this frame and retain the buffer to the frame 2 when the buffer occupies its raised upright position for release from this opening. However, the articulation of the pad 1 to the frame 2 may be of the type allowing the removal of the pad 1 from this frame to the raised upright position of the pad 1. One can imagine putting this lock on a non-articulated device whose pad would be operated by a "drag and slide" movement to put it in the opening of the frame.

Le tampon 1 a sa paroi supérieure formant voile 1a sensiblement plane comportant sur sa face externe des éléments en saillie antidérapants 1b. Le tampon 1 comporte en outre une ouverture 4 débouchant vers l'extérieur au niveau de la face supérieure plane 1c de la paroi 1a et permettant d'accéder par la clé 3 à un verrou 5 fixé sous la paroi 1a du tampon 1. Le verrou 5 est situé en regard de la paroi latérale 2a du cadre 2 opposée à celle d'articulation du tampon 1 à ce cadre. Pour un tampon triangulaire notamment, le verrou sera situé en regard d'une paroi adjacente à celle de l'articulation.The pad 1 has its upper wall forming a substantially planar web 1a comprising on its outer face non-slip protruding elements 1b. The buffer 1 further comprises an opening 4 opening outwards at the level of the flat upper face 1c of the wall 1a and allowing access by the key 3 to a lock 5 fixed under the wall 1a of the buffer 1. The lock 5 is located opposite the side wall 2a of the frame 2 opposite to that of articulation of the buffer 1 to this frame. For a triangular buffer in particular, the lock will be located opposite a wall adjacent to that of the joint.

La clé 3 comprend un bras ou tige longitudinal 6 dont une extrémité est pourvue d'une douille 7 coaxiale au bras 6 et l'extrémité opposée est pourvue d'une poignée de manœuvre 8 s'étendant perpendiculairement de part et d'autre du bras 6. La douille 7 comporte une empreinte interne 9 permettant d'être en prise avec un rotor 10 monté à rotation dans le tampon 1 pour manœuvrer le verrou 5 d'une position de verrouillage dans laquelle un pêne 11 du verrou 5 est retenu prisonnier d'une gâche 12 du cadre 2 pour verrouiller le tampon 1 au cadre 2 à une position de déverrouillage pour laquelle le pêne 11 est dégagé de la gâche 12 pour permettre le retrait du tampon 1 du cadre 2. La gâche 12 est formée par un évidement réalisé dans une épaisseur interne de la paroi latérale 2a du cadre opposé à l'axe d'articulation A.The key 3 comprises a longitudinal arm or rod 6, one end of which is provided with a socket 7 coaxial with the arm 6 and the opposite end is provided with an operating handle 8 extending perpendicularly on either side of the arm 6. The socket 7 has an internal recess 9 making it possible to engage with a rotor 10 rotatably mounted in the pad 1 to maneuver the latch 5 from a locking position in which a bolt 11 of the latch 5 is held captive. 'a keeper 12 of the frame 2 to lock the cover 1 to the frame 2 in an unlocking position for which the bolt 11 is released from the keeper 12 to allow the removal of the cover 1 from the frame 2. The keeper 12 is formed by a recess made in an internal thickness of the side wall 2a of the frame opposite to the articulation axis A.

Le rotor 10 du verrou 5 s'étend perpendiculairement à la paroi supérieure 1a du tampon 1 sous celle-ci et est relié, à son extrémité opposée à celle destinée à venir en prise avec la douille 7 de la clé 3, au pêne 11 de manière à permettre le déplacement du pêne 11 sous l'action de la clé 3, lorsque la douille 7 est en prise avec l'extrémité 10b du rotor 10, entre ses positions prisonnière et dégagée de la gâche 12 du cadre 2.The rotor 10 of the lock 5 extends perpendicularly to the upper wall 1a of the cover 1 under the latter and is connected, at its end opposite to that intended to engage with the socket 7 of the key 3, to the bolt 11 of so as to allow the movement of the bolt 11 under the action of the key 3, when the socket 7 is engaged with the end 10b of the rotor 10, between its captive positions and released from the keeper 12 of the frame 2.

La référence V désigne un vérin d'assistance à l'ouverture du tampon et monté articulé entre le tampon 1 et la paroi latérale 2a du cadre 1 pourvue de l'articulation A. La référence B désigne une béquille de retenue du tampon 1 à sa position debout de dégagement de l'ouverture du cadre 2 et ayant l'une de ses extrémités reliée articulée à la paroi latérale 2a du cadre 2 pourvue de l'articulation A et son extrémité opposée conformée et apte à coopérer avec une nervure 1n du tampon 1 sous ce dernier pour bloquer le tampon 1 à sa position debout.The reference V designates a jack for assisting the opening of the buffer and mounted articulated between the buffer 1 and the side wall 2a of the frame 1 provided with the articulation A. The reference B designates a crutch for retaining the buffer 1 at its standing position of release of the opening of the frame 2 and having one of its ends hingedly connected to the side wall 2a of the frame 2 provided with the articulation A and its opposite end shaped and able to cooperate with a rib 1n of the buffer 1 under the latter to block the buffer 1 in its standing position.

Un support élastique J est fixé sous le tampon 1 et vient en appui sur une nevure périphérique interne 2n du cadre 2 lorsque le tampon 1 obture le cadre 2. Ce support élastique J peut avoir une fonction d'étanchéité.An elastic support J is fixed under the buffer 1 and comes to bear on an internal peripheral nevure 2n of the frame 2 when the buffer 1 closes the frame 2. This elastic support J can have a sealing function.

Selon l'invention, le pêne 11 du verrou 5 comprend une tige 11a, de préférence constituée par un barreau longiligne plat, logée à coulissement guidé dans un boîtier 13 amoviblement fixé sous le tampon 1, la tige 11a s'étendant suivant une direction sensiblement parallèle à la paroi supérieure 1a du tampon 1 et transversale à la paroi latérale 2a du cadre 2 pourvue de l'articulation A lorsque celui-ci est articulé.According to the invention, the bolt 11 of the latch 5 comprises a rod 11a, preferably constituted by an elongated flat bar, housed sliding guided in a housing 13 removably fixed under the cover 1, the rod 11a extending in a substantially direction. parallel to the upper wall 1a of the buffer 1 and transverse to the side wall 2a of the frame 2 provided with the articulation A when the latter is articulated.

La tige 11 a du pêne 11 est rappelée à sa position d'engagement dans la gâche 12 du cadre 2 par un organe élastique 14 de préférence constitué par un ressort hélicoïdal de compression logé dans le boîtier 13 coaxialement à la tige 11a du pêne 11 et perpendiculairement au rotor 10.The rod 11a of the bolt 11 is returned to its position of engagement in the keeper 12 of the frame 2 by an elastic member 14 preferably constituted by a helical compression spring housed in the housing 13 coaxially with the rod 11a of the bolt 11 and perpendicular to the rotor 10.

Le boîtier 13 comprend deux parties 15, 16 amoviblement fixées l'une à l'autre par des vis de fixation 17 et comprenant respectivement une première partie longiligne 15 à section transversale sensiblement en forme de Ω à fond plat 18 dans laquelle sont logés à coulissement guidé la tige 11a du pêne 11 et l'organe de rappel 14 et une seconde partie en forme de plaque plane 16 sous laquelle sont amoviblement fixées les deux branches planes latérales longilignes 19 de la première partie 15 par les vis 17 ancrées dans des trous taraudés 20 de la seconde partie 16. La seconde partie 16 présente une forme générale rectangulaire de préférence (en fonction du nervurage de la fonte en sous-face du tampon, cette forme pourra être différente).The housing 13 comprises two parts 15, 16 removably fixed to one another by fixing screws 17 and respectively comprising a first elongated part 15 with a substantially Ω-shaped cross section with a flat bottom 18 in which are slidably housed guided the rod 11a of the bolt 11 and the return member 14 and a second part in the form of a flat plate 16 under which the two elongated lateral flat branches 19 of the first part 15 by screws 17 anchored in threaded holes 20 of the second part 16. The second part 16 preferably has a generally rectangular shape (depending on the ribbing of the cast iron on the underside buffer, this shape may be different).

La seconde partie 16 du boîtier 13 comprend une plaquette 21 solidaire d'un bord de cette seconde partie perpendiculairement à celle-ci de manière à obturer l'ouverture d'extrémité de la première partie 15 opposée à celle autorisant le passage de l'extrémité biseautée 11b de la tige 11a du pêne 11 et sur laquelle plaquette 21 est en appui une extrémité de l'organe de rappel 14, dont la partie d'extrémité opposée est logée dans une échancrure d'extrémité en forme de U de la tige 11a du pêne 11.The second part 16 of the housing 13 comprises a plate 21 integral with an edge of this second part perpendicular to the latter so as to close off the end opening of the first part 15 opposite to that allowing the passage of the end. bevelled 11b of the rod 11a of the bolt 11 and on which the plate 21 bears one end of the return member 14, the opposite end portion of which is housed in a U-shaped end notch of the rod 11a bolt 11.

La seconde partie 16 du boîtier 13 est amoviblement fixée à quatre pieds 22 pouvant venir de fonderie en faisant saillie sous la paroi supérieure 1a du tampon 1. Plus précisément, la plaque plane sensiblement carrée de la seconde partie 16 du boîtier 13 comprend quatre perçages 23 réalisés aux quatre coins de cette plaque et permettant le passage de quatre vis 16a, pouvant s'ancrer respectivement dans quatre trous taraudés formés dans les parties d'extrémités des quatre pieds 22 du tampon 1.The second part 16 of the housing 13 is removably attached to four feet 22 which may come from the foundry projecting under the upper wall 1a of the cover 1. More precisely, the substantially square flat plate of the second part 16 of the housing 13 comprises four holes 23. made at the four corners of this plate and allowing the passage of four screws 16a, which can be anchored respectively in four tapped holes formed in the end parts of the four feet 22 of the plug 1.

La tige 11a du pêne 11 comporte un évidement traversant 24 formé au voisinage de la partie centrale de cette tige et dont le rôle sera expliqué ci-dessous.The rod 11a of the bolt 11 comprises a through recess 24 formed in the vicinity of the central part of this rod and the role of which will be explained below.

Le rotor 10 comporte, solidaire de son extrémité 10a opposé à l'extrémité 10b pouvant être en prise avec la clé 3, une pièce formant came 25 engagée dans l'évidement 24 de la tige 11a de pêne 11, lequel évidement 24 est conformé pour coopérer avec la pièce formant came 25 du rotor 10 lorsque ce dernier est manœuvré par la clé 3 pour déplacer en translation la tige 11a du pêne 11 dans le boîtier 13 à sa position dégagée de la gâche 12 à l'encontre de la force de rappel de l'organe de rappel élastique 14.The rotor 10 comprises, integral with its end 10a opposite to the end 10b which can be engaged with the key 3, a part forming a cam 25 engaged in the recess 24 of the rod 11a of the bolt 11, which recess 24 is shaped for cooperate with the part forming the cam 25 of the rotor 10 when the latter is operated by the key 3 to translate the rod 11a of the bolt 11 in the housing 13 to its position released from the keeper 12 against the return force of the elastic return member 14.

La pièce formant came 25 du rotor 10 a sa came proprement dite 25a s'étendant perpendiculairement à la direction longitudinale de la tige 11a du pêne 11 lorsque ce dernier occupe sa position engagée dans la gâche 12. En outre, la tige 11a du pêne 11 est en appui par une face interne 24a de son évidement 24 située du côté de l'organe de rappel 14 sur une face latérale 25b de la pièce formant came 25 et adjacente à la came 25a lorsque la tige 11a du pêne 11 occupe sa position engagée dans la gâche 12 pour constituer de la sorte une butée de retenue de la tige 11a du pêne 11 à cette position sous l'action de l'organe de rappel 14.The part forming the cam 25 of the rotor 10 has its actual cam 25a extending perpendicularly to the longitudinal direction of the rod 11a of the bolt 11 when the latter occupies its engaged position in the keeper 12. In addition, the rod 11a of the bolt 11 is supported by an internal face 24a of its recess 24 located on the side of the return member 14 on a lateral face 25b of the part forming a cam 25 and adjacent to the cam 25a when the rod 11a of the bolt 11 occupies its engaged position in the keeper 12 to thereby constitute a stopper for retaining the rod 11a of the bolt 11 in this position under the action of the return member 14.

La partie d'extrémité du rotor 10 comportant l'extrémité 10a à pièce formant came 25 traverse la paroi plane de la seconde partie 16 du boîtier 13 comme on le verra ultérieurement de manière que la pièce formant came 25 puisse être engagée dans l'évidement 24 de la tige du pêne 11 et, par conséquent, soit logée dans le boîtier 13.The end portion of the rotor 10 having the cam member end 10a 25 passes through the planar wall of the second portion 16 of the housing 13 as will be seen later so that the cam member 25 can be engaged in the recess. 24 of the rod of the bolt 11 and, consequently, is housed in the housing 13.

Le verrou 5 comprend un fût cylindrique 26 solidaire de la face supérieure de la plaque plane de la seconde partie 16 du boîtier 13 en s'étendant perpendiculairement à cette face de manière que le fût cylindrique 26 s'étende à une position fixe perpendiculairement à la paroi 1a du tampon 1 en-dessous de cette paroi.The lock 5 comprises a cylindrical barrel 26 secured to the upper face of the flat plate of the second part 16 of the housing 13 extending perpendicularly to this face so that the cylindrical barrel 26 extends in a fixed position perpendicular to the wall 1a of the buffer 1 below this wall.

Le rotor 10 s'étend coaxialement dans le fût cylindrique 26 avec sa partie d'extrémité cylindrique inférieure de plus petit diamètre traversant un alésage central inférieur 27 du fût cylindrique 26 et la paroi plane de la seconde partie 16 du boîtier 13 afin que la pièce formant came 25 soit logée dans l'évidement 24 de la tige du pêne 11. Ainsi, le rotor 10 peut tourner sous l'action de la clé 3 dans l'alésage 27 du fût cylindrique 26 pour entraîner angulairement la pièce formant came 25 entre ses deux positions de retrait de la tige 11a du pêne 11 de la gâche 12 et d'engagement de la tige 11a du pêne 11 dans cette gâche.The rotor 10 extends coaxially into the cylindrical barrel 26 with its smaller diameter lower cylindrical end portion passing through a lower central bore 27 of the cylindrical barrel 26 and the planar wall of the second portion 16 of the housing 13 so that the workpiece forming cam 25 is housed in the recess 24 of the rod of the bolt 11. Thus, the rotor 10 can rotate under the action of the key 3 in the bore 27 of the cylindrical barrel 26 to angularly drive the part forming the cam 25 between its two positions of withdrawal of the rod 11a of the bolt 11 of the keeper 12 and of engagement of the rod 11a of the bolt 11 in this keeper.

La partie d'extrémité du fût cylindrique 26 opposée à la seconde partie 16 du boîtier 13 est coiffée par un manchon cylindrique 28 solidaire de cette partie d'extrémité et comportant une paroi d'extrémité transversale 29 au travers de laquelle est définie l'ouverture débouchante 4 qui comprend un orifice central circulaire 4a d'un diamètre légèrement supérieur au diamètre externe de la douille 7 de la clé 3 et deux rainures diamétralement opposées 4b débouchant dans l'orifice central circulaire 4a.The end part of the cylindrical barrel 26 opposite the second part 16 of the housing 13 is capped by a cylindrical sleeve 28 integral with this end part and comprising a transverse end wall 29 through which the opening is defined. opening 4 which comprises a circular central orifice 4a with a diameter slightly greater than the external diameter of the socket 7 of the key 3 and two diametrically opposed grooves 4b opening into the circular central orifice 4a.

Le manchon cylindrique 28 comporte à l'opposé de sa paroi d'extrémité 29 une embase annulaire 30 comportant deux perçages diamétralement opposés 31 dans lesquels sont engagés deux pions cylindriques 32, tels que par exemple des goupilles cannelées, emmanchés à force respectivement dans deux perçages correspondant 33 du fût cylindrique 26 pour fixer le manchon cylindrique 28 au fût cylindrique 26 avec la paroi transversale d'extrémité 29 en appui sur l'extrémité annulaire du fût cylindrique 26.The cylindrical sleeve 28 comprises, opposite its end wall 29, an annular base 30 comprising two diametrically opposed bores 31 in which two cylindrical pins 32 are engaged, such as for example grooved pins, force-fitted respectively in two bores 33 of the cylindrical barrel 26 to fix the cylindrical sleeve 28 to the cylindrical barrel 26 with the transverse end wall 29 resting on the annular end of the cylindrical barrel 26.

Le verrou 5 comprend également un bouchon 34 permettant d'obturer l'orifice débouchant 4. Le bouchon de fermeture 34 est en forme de tronçon cylindrique comportant deux parties d'extrémités cylindriques 35, 36 séparées l'une de l'autre par une collerette 37 pouvant coulisser dans le fût cylindrique 26, l'une supérieure 35 des parties d'extrémités cylindriques du bouchon de fermeture 34 comportant deux tenons diamétralement opposés 38 pouvant s'engager avec la partie d'extrémité cylindrique 35 dans l'orifice central circulaire 4a et les rainures 4b du manchon cylindrique 28 pour obturer l'orifice débouchant 4 avec la collerette 37 en appui sous la paroi transversale d'extrémité 29 du manchon cylindrique 28.The lock 5 also comprises a plug 34 making it possible to close the through orifice 4. The closing plug 34 is in the form of a cylindrical section comprising two parts of cylindrical ends 35, 36 separated from each other by a collar. 37 slidable in the cylindrical barrel 26, the upper one 35 of the parts cylindrical ends of the closure cap 34 comprising two diametrically opposed tenons 38 which can engage with the cylindrical end portion 35 in the circular central orifice 4a and the grooves 4b of the cylindrical sleeve 28 to close the through orifice 4 with the collar 37 resting under the transverse end wall 29 of the cylindrical sleeve 28.

Un ressort hélicoïdal de compression 39 est monté précontraint entre la collerette 37 du bouchon de fermeture 34 et un épaulement interne 40 du fût cylindrique 26 de manière à exercer un effort de rappel du bouchon 34 à sa position d'obturation de l'ouverture débouchante 4. Ainsi, le bouchon 34 est rendu imperdable, c'est-à-dire qu'il ne peut être retiré du tampon 1.A helical compression spring 39 is pre-stressed between the flange 37 of the closure cap 34 and an internal shoulder 40 of the cylindrical barrel 26 so as to exert a force to return the cap 34 to its position of closing the through opening 4 Thus, the plug 34 is made captive, that is to say that it cannot be removed from the plug 1.

Le bouchon de fermeture 34 peut être axialement déplacé de façon guidée le long de la partie d'extrémité de plus grand diamètre 10b du rotor 10 à l'encontre de la force de rappel du ressort 39 lorsque la douille 7 de la clé 3 est introduite au travers de l'ouverture débouchante 4.The closure plug 34 can be axially guided in a guided manner along the larger diameter end portion 10b of the rotor 10 against the return force of the spring 39 when the socket 7 of the wrench 3 is inserted. through the through opening 4.

A cet effet, le bouchon de fermeture 34 a un orifice central traversant 41 de forme complémentaire à la forme externe de la partie d'extrémité 10b du rotor 10.For this purpose, the closure plug 34 has a central through orifice 41 of a shape complementary to the external shape of the end part 10b of the rotor 10.

Plus particulièrement, la partie d'extrémité cylindrique 10b du rotor 10 comporte un méplat 10d s'étendant tout le long de la partie d'extrémité 10b pouvant coopérer avec un méplat 41a de l'orifice traversant 41 du bouchon de fermeture 34. D'autres formes d'empreintes de clés peuvent exister.More particularly, the cylindrical end part 10b of the rotor 10 comprises a flat 10d extending all the way along the end part 10b which can cooperate with a flat 41a of the through orifice 41 of the closure plug 34. D ' other forms of key fingerprints may exist.

En outre, la partie d'extrémité 10b du rotor comporte un second méplat 10e de largeur moindre que celle du méplat 10d, raccordé à ce dernier et constituant un détrompeur coopérant avec un second méplat 41b de l'orifice 41 du bouchon de fermeture 34.In addition, the end portion 10b of the rotor comprises a second flat 10e of lesser width than that of the flat 10d, connected to the latter and constituting a keying device cooperating with a second flat 41b of the orifice 41 of the closure plug 34.

Ainsi, le bouchon de fermeture 34 peut coulisser axialement le long du rotor 10 à l'encontre de la force de rappel du ressort 39 en étant solidarisé en rotation à cette partie d'extrémité.Thus, the closure plug 34 can slide axially along the rotor 10 against the return force of the spring 39 by being fixed in rotation to this end part.

En position de fermeture du bouchon 34, la paroi d'extrémité 29 du manchon cylindrique 28, l'extrémité supérieure du bouchon de fermeture 34 et l'extrémité supérieure du rotor 10 sont en affleurement dans un même plan situé dans le plan de la face externe 1c de la paroi 1a du tampon 1. Il est à noter que le manchon cylindrique 28 est en grande partie logé dans un perçage 1d de la paroi 1a du tampon 1.In the closed position of the stopper 34, the end wall 29 of the cylindrical sleeve 28, the upper end of the closing stopper 34 and the upper end of the rotor 10 are flush in the same plane situated in the plane of the face. 1c of the wall 1a of the buffer 1. It should be noted that the cylindrical sleeve 28 is for the most part housed in a bore 1d of the wall 1a of the buffer 1.

Le rotor 10 est axialement maintenu dans le fût cylindrique 26 par la pièce formant came 25 logée dans l'évidement 24 du pêne 11 entre la paroi de fond 18 de la première partie 15 du boîtier 13 et l'extrémité inférieure du fût cylindrique 26, tout en pouvant tourner d'un angle limité dans ce fût sous l'action de la clé 3.The rotor 10 is axially held in the cylindrical barrel 26 by the part forming a cam 25 housed in the recess 24 of the bolt 11 between the bottom wall 18 of the first part 15 of the housing 13 and the lower end of the cylindrical barrel 26, while being able to turn at a limited angle in this barrel under the action of key 3.

L'empreinte 9 de la douille 7 de la clé 3 est de forme complémentaire à celle de la partie d'extrémité 10b du rotor 10, c'est-à-dire dans l'exemple illustré que l'empreinte 9 comporte un méplat 9a apte à coopérer avec le méplat 10d de la partie d'extrémité 10b du rotor 10 et un second méplat de plus faible largeur 9b apte à coopérer avec le méplat 10e de la partie d'extrémité 10b du rotor 10 pour constituer ensemble un moyen détrompeur.The recess 9 of the socket 7 of the key 3 is of a shape complementary to that of the end part 10b of the rotor 10, that is to say in the example illustrated that the recess 9 comprises a flat 9a able to cooperate with the flat 10d of the end part 10b of the rotor 10 and a second flat of smaller width 9b able to cooperate with the flat 10e of the end part 10b of the rotor 10 together to constitute a foolproof means.

La douille 7 de la clé 3 comprend en outre deux ergots diamétralement opposés 7a faisant saillie de part et d'autre de cette douille et de forme conjuguée respectivement aux deux rainures diamétralement opposées 4b de l'ouverture débouchante 4.The socket 7 of the key 3 further comprises two diametrically opposed lugs 7a projecting on either side of this socket and of a shape corresponding respectively to the two diametrically opposed grooves 4b of the through opening 4.

Le montage des différents composants du verrou 5 ressort déjà en grande partie de la description qui précède et va être maintenant expliqué.The assembly of the various components of the lock 5 already emerges in large part from the above description and will now be explained.

Tout d'abord, le rotor 10 est engagé dans le fût cylindrique 26 sans sa pièce formant came 25 de manière que sa partie d'extrémité inférieure cylindrique 10a soit engagée dans l'alésage 27 du fût cylindrique 26 puis la pièce formant came 25 est fixée à l'extrémité du rotor 10 par une vis de fixation centrale, non représentée. Ensuite, le pêne 11 et l'organe élastique de rappel 14 sont montés dans la première partie 15 du boîtier 13 et le rotor 10 est engagé dans l'évidement 24 du pêne 11. La première partie 15 est alors fixée par les vis de fixation 17 sous la plaque de la seconde partie 16 du boîtier 13 et le ressort 39 est engagé dans le fût cylindrique 26. Ensuite, le bouchon de fermeture 34 est disposé au-dessus du ressort 39 de manière que la collerette 37 de ce bouchon soit en appui sur la spire d'extrémité supérieure de ce ressort. Puis, le manchon cylindrique 28 est engagé sur la partie d'extrémité supérieure du fût cylindrique 26 en positionnant l'orifice débouchant 4 de manière que les tenons 38 du bouchon 34 soient engagés respectivement dans les deux rainures 4b du manchon cylindrique 28 qui est alors fixé au fût cylindrique 26 par les pions cylindriques 32 traversant les perçages 31 de l'embase circulaire 30 du manchon cylindrique 28 et les perçages 33 du fût cylindrique 26. Puis l'ensemble assemblé des boîtier 13, fût cylindrique 26, bouchon de fermeture 34 et manchon cylindrique 38 est engagé sous la paroi 1a du tampon 1 de manière que le manchon cylindrique 28 soit engagé dans le perçage 1d de la paroi 1a et le boîtier 13 est fixé par l'intermédiaire de sa seconde partie 16 aux quatre pieds 22 du tampon 1.First, the rotor 10 is engaged in the cylindrical barrel 26 without its camming part 25 so that its cylindrical lower end part 10a is engaged in the bore 27 of the cylindrical barrel 26 then the camming part 25 is fixed to the end of the rotor 10 by a central fixing screw, not shown. Then, the bolt 11 and the elastic return member 14 are mounted in the first part 15 of the housing 13 and the rotor 10 is engaged in the recess 24 of the bolt 11. The first part 15 is then fixed by the fixing screws. 17 under the plate of the second part 16 of the housing 13 and the spring 39 is engaged in the cylindrical barrel 26. Then, the closing plug 34 is disposed above the spring 39 so that the collar 37 of this plug is in bearing on the upper end coil of this spring. Then, the cylindrical sleeve 28 is engaged on the upper end portion of the cylindrical barrel 26 by positioning the through orifice 4 so that the tenons 38 of the stopper 34 are engaged respectively in the two grooves 4b of the cylindrical sleeve 28 which is then fixed to the cylindrical barrel 26 by the cylindrical pins 32 passing through the bores 31 of the circular base 30 of the cylindrical sleeve 28 and the bores 33 of the cylindrical barrel 26. Then the assembled assembly of the casing 13, cylindrical barrel 26, closure cap 34 and cylindrical sleeve 38 is engaged under the wall 1a of the buffer 1 so that the cylindrical sleeve 28 is engaged in the bore 1d of the wall 1a and the housing 13 is fixed by means of its second part 16 to the four feet 22 of the cover 1.

Le fonctionnement du verrou de l'invention pour déverrouiller le tampon 1 du cadre 2 va être maintenant expliqué.The operation of the lock of the invention for unlocking the buffer 1 from the frame 2 will now be explained.

A la position de verrouillage du tampon 1 au cadre 2, le pêne 11 occupe sa position à laquelle il est prisonnier, par son extrémité biseauté 11a, de la gâche 12 du cadre 2 comme cela ressort mieux de la figure 4.At the locking position of the buffer 1 to the frame 2, the bolt 11 occupies its position in which it is trapped, by its bevelled end 11a, of the keeper 12 of the frame 2 as is best seen from the figure 4 .

Un opérateur positionne la clé 3 au-dessus de l'ouverture débouchante 4 de manière que la douille 7 et les ergots 7a soient en aplomb de l'ouverture 4 et des rainures 4b et l'introduction de la douille 7 dans le fût cylindrique 26 provoque l'enfoncement du bouchon de fermeture 34 dans ce fût à l'encontre de la force de rappel du ressort 39 avec désengagement des tenons 38 du bouchon 34 des rainures 4b du manchon cylindrique 28. Lors de cet enfoncement, la partie d'extrémité 10b du rotor 10 est accouplée à la douille 7 de la clé 3 qui est ensuite tournée d'environ un quart de tour pour tourner également d'un quart de tour le bouchon 34 dans le fût 26 de manière que les deux ergots 7a de la douille 7 puissent venir en appui sous la paroi d'extrémité 29 du manchon cylindrique 28 et soient maintenus sous celle-ci par la force de rappel exercée par le ressort 39 sur la collerette 27 du bouchon 34, les ergots 7a étant ainsi emprisonnés entre la paroi 29 et la collerette 37, retenant la clé 3 au tampon 1.An operator positions the key 3 above the through opening 4 so that the sleeve 7 and the pins 7a are in line with the opening 4 and the grooves 4b and the introduction of the sleeve 7 into the cylindrical barrel 26 causes the insertion of the closing plug 34 in this barrel against the return force of the spring 39 with disengagement of the tenons 38 of the plug 34 from the grooves 4b of the cylindrical sleeve 28. During this insertion, the end part 10b of the rotor 10 is coupled to the socket 7 of the key 3 which is then turned by about a quarter of a turn to also turn the plug 34 in the barrel 26 by a quarter of a turn so that the two pins 7a of the sleeve 7 can come to bear under the end wall 29 of the cylindrical sleeve 28 and are held under the latter by the return force exerted by the spring 39 on the flange 27 of the plug 34, the pins 7a thus being trapped between the wall 29 and collar 37, retaining key 3 to buffer 1.

Lors de la rotation d'un quart de tour du rotor 10, la pièce formant came 25 provoque par sa came 25a le déplacement en translation guidée de la tige 11a du pêne 11 dans le boîtier 13 à l'encontre de la force de rappel de l'organe élastique 14 de manière à désengager l'extrémité biseautée 11a de cette tige de la gâche 12 du cadre 2.During the rotation of a quarter of a turn of the rotor 10, the part forming the cam 25 causes by its cam 25a the guided translational movement of the rod 11a of the bolt 11 in the housing 13 against the return force of the elastic member 14 so as to disengage the bevelled end 11a of this rod from the keeper 12 of the frame 2.

La pression exercée par le ressort 39 sur le bouchon 34 pour retenir la clé 3 emprisonnée au tampon 1 est suffisante pour que la pièce formant came 25 du rotor 10 reste à sa position de maintien de la tige 11a du pêne 11 à sa position rétractée dans le boîtier 13 hors de la gâche 12.The pressure exerted by the spring 39 on the cap 34 to retain the key 3 trapped in the buffer 1 is sufficient for the part forming the cam 25 of the rotor 10 to remain in its position for holding the rod 11a of the bolt 11 in its retracted position in the box 13 out of the strike 12.

L'opérateur peut alors à l'aide de la clé 3 soulever le tampon 1 pour le désengager du cadre 2 par pivotement autour de l'axe d'articulation A.The operator can then, using the key 3, lift the buffer 1 to disengage it from the frame 2 by pivoting around the articulation axis A.

A la position relevée debout du tampon 1, l'opérateur peut retirer la clé 3 de ce tampon en tournant celle-ci d'un quart de tour de manière à désengager les deux ergots 7a de la clé 3 des rainures 4b du manchon cylindrique 28, ramenant alors la pièce formant came 25 du rotor 10 à sa position à laquelle la tige 11a du pêne 11 est ramenée par l'organe élastique de rappel 14 à sa position en saillie du boîtier 13.In the raised upright position of the buffer 1, the operator can remove the key 3 from this buffer by turning it a quarter of a turn so as to disengage the two pins 7a of the key 3 from the grooves 4b of the cylindrical sleeve 28 , then bringing the room forming a cam 25 of the rotor 10 in its position at which the rod 11a of the bolt 11 is returned by the elastic return member 14 to its position projecting from the housing 13.

Il est à noter que dans le cas où le tampon 1 n'est pas articulé au cadre 2, ce tampon est retiré complètement du cadre 2 pour dégager l'ouverture de ce dernier et la clé 3 peut être également retirée du tampon 1 comme expliqué au paragraphe précédent pour que la tige 11a du pêne 11 soit ramenée automatiquement par l'organe élastique de rappel 14 à sa position en saillie du boîtier 13.It should be noted that in the case where the buffer 1 is not articulated to the frame 2, this buffer is completely withdrawn from the frame 2 to release the opening of the latter and the key 3 can also be removed from the buffer 1 as explained. in the previous paragraph so that the rod 11a of the bolt 11 is automatically returned by the elastic return member 14 to its position projecting from the housing 13.

Pour ramener le tampon 1 à sa position de fermeture du cadre 2, l'opérateur fait basculer manuellement le tampon 1 à partir de sa position debout. Lors du basculement du tampon 1 vers sa position de fermeture, la partie biseautée 11a de la tige du pêne 11 heurte une face d'une partie saillante du cadre 2 située au-dessus de la gâche 12 pour provoquer le déplacement en translation de la tige 11a du pêne 11 en partie dans le boîtier 13 à l'encontre de la force de rappel de l'organe élastique 14 puis cet organe rappelle la tige 11a du pêne 11 à sa position d'engagement de l'extrémité biseautée 11b dans la gâche 12 du cadre 2 pour verrouiller à nouveau le tampon 1 à ce cadre. Bien entendu, l'engagement de cette extrémité biseautée 11b dans la gâche 12 du cadre 2 pour verrouiller à nouveau le tampon 1 au cadre 2 s'effectue également dans le cas du tampon 1 non articulé au cadre 2 en déposant manuellement ce tampon directement dans l'ouverture du cadre 2.To return the pad 1 to its closed position of the frame 2, the operator manually switches the pad 1 from its standing position. When tilting the buffer 1 towards its closed position, the bevelled part 11a of the rod of the bolt 11 hits a face of a projecting part of the frame 2 located above the keep 12 to cause the translational movement of the rod 11a of the bolt 11 partly in the housing 13 against the return force of the elastic member 14 then this member returns the rod 11a of the bolt 11 to its position of engagement of the bevelled end 11b in the keeper 12 of frame 2 to re-lock buffer 1 to this frame. Of course, the engagement of this bevelled end 11b in the keeper 12 of the frame 2 to again lock the buffer 1 to the frame 2 is also carried out in the case of the buffer 1 not articulated to the frame 2 by manually depositing this buffer directly in the opening of the frame 2.

Ainsi, le tampon 1 est automatiquement verrouillé au cadre 2 sans l'aide de la clé 3.Thus, buffer 1 is automatically locked to frame 2 without using key 3.

Bien entendu, au besoin, à la position debout du tampon 1, la clé 3 peut être maintenue prisonnière de ce tampon et l'opérateur peut faire basculer le tampon à sa position de fermeture du cadre 1. Une fois le cadre 1 obturé par le tampon, l'opérateur tourne la clé 3 d'un quart de tour pour provoquer le pivotement angulaire de la pièce formant came 25 à sa position à laquelle l'organe élastique 14 peut rappeler la tige du pêne 11 à sa position engagée dans la gâche 12 du cadre 2 afin de verrouiller le tampon 1 à ce cadre.Of course, if necessary, in the standing position of the buffer 1, the key 3 can be held captive of this buffer and the operator can tilt the buffer to its position for closing the frame 1. Once the frame 1 is closed by the buffer, the operator turns the key 3 a quarter of a turn to cause the angular pivoting of the part forming the cam 25 to its position at which the elastic member 14 can return the rod of the bolt 11 to its position engaged in the strike 12 of frame 2 in order to lock the buffer 1 to this frame.

Le rotor 10 et la pièce formant came 25 peuvent être remplacés par tout autre mécanisme d'entraînement logé dans le tampon 1 et qui, sous l'action de la clé 3, permet le déplacement en translation du pêne 11 entre ses positions engagée dans la gâche 12 et dégagée de celle-ci.The rotor 10 and the part forming the cam 25 can be replaced by any other drive mechanism housed in the buffer 1 and which, under the action of the key 3, allows the translational movement of the bolt 11 between its engaged positions in the keeper 12 and released from it.

Le dispositif ci-dessus décrit de l'invention utilise un verrou qui permet le verrouillage automatique du tampon 1 au cadre 2 lors du basculement de ce tampon à sa position de fermeture du cadre 2 sans l'aide de la clé de manœuvre de ce verrou tout en garantissant la fonction d'anti-encrassement de l'ouverture d'accès à ce verrou à la position de fermeture du cadre 2 par le tampon 1. Les avantages de l'invention sont la possibilité de fermer et verrouiller rapidement le tampon dans le cadre et d'interdire l'oubli sur le chantier de corps étrangers, tels qu'un bouchon amovible rapporté dans l'ouverture débouchante du tampon et retiré de cette ouverture pour accéder au rotor afin de déverrouiller le tampon du cadre.The device described above of the invention uses a lock which allows the automatic locking of the buffer 1 to the frame 2 during the tilting of this buffer to its closed position of the frame 2 without using the key to operate this lock. while ensuring the anti-fouling function of the access opening to this lock in the closed position of the frame 2 by the buffer 1. The advantages of the invention are the possibility of quickly closing and locking the buffer in the frame and to prohibit the forgetting on the site of foreign bodies, such as a removable plug inserted in the through opening of the buffer and removed from this opening to access the rotor in order to unlock the buffer from the frame.

Claims (14)

  1. Device for locking and unlocking using a key (3) of a buffer (1) on a frame (2), comprising a lock (5) adapted to be integral with the buffer (1) which has a through opening (4) for access to the lock (5) for the key (3) comprising an arm (6), one end (7) of which allows the lock (5) to be operated when the key (3) is inserted into the opening (4) of the buffer (1) from a locking position in which a bolt (11) of the lock (5) is held captive by a striker (12) of the frame (2) to lock the buffer (1) in the frame to an unlocking position for which the bolt (11) is released from the striker (12) to allow the movement of the buffer (1) to its position released from the opening of the frame (2), the lock (5) comprising a drive mechanism (10,25) connected to the bolt (11) so as to allow the movement of the bolt (11) under the action of the key (3) between its captive and released positions from the striker (12), the bolt (11) of the lock (5) comprising a rod (11a) returned to its captive position of the striker (12) by an elastic return member (14) and the drive mechanism (10,25) cooperating with the bolt (11) under the action of the key (3) to move in translation against the return force of the return member (14) the rod (11a) of the bolt (11) at its release position of the striker (12), the bolt (11) of the lock (5), when the key (3) is withdrawn from the buffer (1) in its position released from the opening of the frame (2), allowing the automatic locking by the elastic return member (14) of the buffer (1) to the frame (2) when the buffer (1) is introduced into the frame (2), and the through opening (4) of the buffer (1) being closed by a captive plug (34) brought to bear under the buffer (1) in its closed position of the through opening (4) by a return spring (39), the drive mechanism (10,25) comprising a rotor (10) mounted for rotation in the buffer (1) perpendicularly under the latter, accessible to one (10b) of its ends by the opening (4) and a part forming a cam (25) integral with the opposite end (10a) of the rotor (10) and engaged in a recess (24) of the rod (11a) of the bolt (11) and cooperating with the cam-forming part (25) of the rotor (10) when the latter is operated by the key (3) engaged with the corresponding end (10b) of the rotor (10) to move in translation against the return force of the return member (14) the rod (11a) of the bolt (11) in its position released from the striker (12).
  2. Device according to claim 1, characterized in that the rod (11a) of the bolt (11) and the return member (14) are coaxial and housed perpendicular to the rotor (10) in a housing (13) removably fixed under the buffer (1) and the end part (10a) of the rotor (10) comprising the cam (25) passes through a wall (16) of the housing (13) located on the internal face of the buffer (1) so that the cam (25) engaged in the recess (24) of the rod (11a) of the bolt (11) is housed in the housing (13).
  3. Device according to claim 1 or claim 2, characterized in that the cam (25) of the rotor (11) extends perpendicularly to the longitudinal direction of the rod (11a) of the bolt (11) when the latter occupies its captive position in the striker (12).
  4. Device according to one of claims 1 to 3, characterized in that the rod (11a) of the bolt (11) is supported by an internal face (24a) of its recess (24) located on the side with the return member (14) on a lateral face (10c) of the rotor (10) adjacent to the cam (25) when the rod (11a) of the bolt (11) occupies its captive position in the striker (12).
  5. Device according to claim 2 or claim 3, characterized in that the rod (11a) of the bolt (11) is flat and the housing (13) comprises two parts (15,16) removably fixed to one another the other, of which a first part (15) with a substantially Ω-shaped cross section with a flat bottom (18) in which the rod (11a) of the bolt (11) and the return member (14) are housed with guided sliding, and a second part (16) in the form of a flat plate constituting the aforementioned wall of the housing (13) traversed by the cam (25) and to which the two elongated lateral branches (19) of the first part (15) are removably fixed.
  6. Device according to claim 5, characterized in that the second part (16) of the housing (13) comprises a plate (21) integral with an edge of this second part so as to close the end opening of the first part (15) opposite to that allowing the passage of a beveled end (11b) of the rod (11a) of the bolt (11) and on which the plate (21) bears on one end of the return member (14) constituted by a helical compression spring.
  7. Device according to claim 5 or claim 6, characterized in that the second part (16) of the housing (13) is removably fixed under the buffer (1).
  8. Device according to one of claims 1 to 7, characterized in that the through opening (4) of the buffer (1) is coaxial with the end (10b) of the rotor (10) capable of being engaged with the end (7) of the arm (6) of the key (3), and in that the key (3), when introduced into the through opening (4), causes the closure plug (34) to be pushed in against the force of the return spring (39) along the rotor (10) whose end (10b) is engaged with the end (7) of the arm (6) of the key (3).
  9. Device according to claim 8, characterized in that it comprises a cylindrical barrel (26) fixed under the buffer (1) and comprising a transverse end wall (29) through which the through opening (4) of the buffer (1) is realized and comprises a circular central orifice (4a) and two diametrically opposed grooves (4b) opening into the circular central orifice (4a) and the closure plug (34) is in the form of a cylindrical section mounted in guided sliding in the cylindrical barrel (26) and on the rotor (10) of the lock (5) and comprising two cylindrical end parts (35,36) separated from each other by a collar (37) which can slide in the cylindrical barrel (26), one (35) of the end parts of the closure plug (34) comprising two diametrically opposed tenons (38) engaged respectively in the two grooves (4b) of the through opening (4) with the collar (37) resting under the transverse wall (19) of the barrel (26) when the closure plug (34) occupies its position of closing the through opening (4), the tenons (38) of the closure plug (34) being disengaged from the through opening (4) when the arm (6) of the key (3) is engaged with the end (10b) of the rotor (10) of the lock (5) to drive the rotor (10) in rotation to its position in which the bolt (11) of the lock (5) is disengaged from the striker (12) of the frame (2).
  10. Device according to claim 9, characterized in that the closure plug (34) is integral in rotation with the end (10b) of the rotor (10) of the lock (5).
  11. Device according to claim 9 or claim 10, characterized in that the return spring (39) of the closure plug (34) is housed in the cylindrical barrel (26) being mounted prestressed between the collar (37) of the cylindrical plug (34) and an internal shoulder (40) of the cylindrical barrel (26).
  12. Device according to one of claims 9 to 11, characterized in that the transverse end wall (29) of the cylindrical barrel (26) forms part of a cylindrical sleeve (28) fixed to the corresponding end part of the cylindrical barrel (26).
  13. Device according to one of claims 9 to 12 when considered in combination with claim 5, characterized in that the cylindrical barrel (26) is integral with the second part in the form of a flat plate (16) of the housing (13) and perpendicularly to this one.
  14. Assembly comprising a key and a device according to one of claims 9 to 13, characterized in that the key (3) comprises at the tubular end (7) of its arm (6) two diametrically opposed pins (7a) of a shape combined with the grooves (4b) of the through opening (4) to allow the engagement of the tubular end (7) of the arm (6) of the key (3) through the through opening (4) in pushing the closure plug (34) into the cylindrical barrel (26) against the return force of the spring (39) and to a position in which the two pins (7a) of the key (3) are brought into support under the transverse wall (29) of the cylindrical barrel (26) by rotation of the key (3) in engagement with the rotor (10) of the lock (5) and held under this wall by the closure plug (34) and the return force exerted by the spring (39) on the collar (37) of the closure plug (34).
EP17729185.3A 2016-05-24 2017-05-22 Device for locking and unlocking a manhole cover on a frame by means of a key, with the option of automatic keyless locking of said manhole cover on the frame Active EP3464762B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17729185T PL3464762T3 (en) 2016-05-24 2017-05-22 Device for locking and unlocking a manhole cover on a frame by means of a key, with the option of automatic keyless locking of said manhole cover on the frame

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1654622A FR3051818B1 (en) 2016-05-24 2016-05-24 LOCKING AND UNLOCKING DEVICE USING A KEY FROM A BUFFER ON A FRAME WITH THE POSSIBILITY OF AUTOMATIC KEYLESS LOCKING OF THIS BUFFER ON THE FRAME
PCT/FR2017/051256 WO2017203148A1 (en) 2016-05-24 2017-05-22 Device for locking and unlocking a manhole cover on a frame by means of a key, with the option of automatic keyless locking of said manhole cover on the frame

Publications (2)

Publication Number Publication Date
EP3464762A1 EP3464762A1 (en) 2019-04-10
EP3464762B1 true EP3464762B1 (en) 2021-01-06

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EP17729185.3A Active EP3464762B1 (en) 2016-05-24 2017-05-22 Device for locking and unlocking a manhole cover on a frame by means of a key, with the option of automatic keyless locking of said manhole cover on the frame

Country Status (10)

Country Link
EP (1) EP3464762B1 (en)
CN (1) CN109154167B (en)
DK (1) DK3464762T3 (en)
ES (1) ES2866897T3 (en)
FR (1) FR3051818B1 (en)
MY (1) MY192484A (en)
PL (1) PL3464762T3 (en)
PT (1) PT3464762T (en)
SG (1) SG11201810342WA (en)
WO (1) WO2017203148A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108360653B (en) * 2018-05-14 2019-03-12 中国汽车工业工程有限公司 A kind of drainage equipment
GB2579212A (en) * 2018-11-23 2020-06-17 Flipfix Ltd Access hatch
IT201900003089A1 (en) * 2019-03-04 2020-09-04 Elesa Spa DOOR CLAMPING DEVICE
US11898375B2 (en) * 2020-04-22 2024-02-13 Channell Commercial Corporation Shielded self-latching locking assembly for a utility vault
US11920381B2 (en) 2020-04-22 2024-03-05 Channell Commercial Corporation Shielded self-latching locking assembly for a utility vault
CH718074A1 (en) * 2020-11-18 2022-05-31 Renggli Werner Blocking unit for a manhole structure that can be closed with a manhole cover.

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Publication number Priority date Publication date Assignee Title
JPH0392279U (en) * 1990-01-08 1991-09-19
JPH06257331A (en) * 1993-03-04 1994-09-13 Takigen Seizo Kk Detachable type lock handle device
NL1034000C2 (en) * 2006-10-10 2008-04-14 Tbs Soest B V Sealing device and method for closing a hole in the bottom.
JP2009114684A (en) * 2007-11-05 2009-05-28 Miwa Lock Co Ltd Lock for manhole cover
CN201343929Y (en) * 2009-02-11 2009-11-11 贵州航天精工制造有限公司 Quick-release rotary lock of radome on airplane
US8220298B2 (en) * 2009-02-17 2012-07-17 Channell Commercial Corporation Self-latching locking assembly
FR2977619B1 (en) * 2011-07-04 2013-11-22 Norinco DEVICE FOR LOCKING AND UNLOCKING AT LEAST ONE RECOVERY MEMBER ON A SUPPORT FRAME OF THIS MEMBER
FR2979368B1 (en) * 2011-08-31 2014-10-17 Norinco LOCKING AND UNLOCKING DEVICE USING BUFFER KEY ON BUFFER INTEGRATED CLOSURE FRAME OF BUFFER OPENING FOR KEY PASSAGE
CN202831883U (en) * 2012-09-18 2013-03-27 中国石油天然气股份有限公司 Anti-theft lock for valve

Also Published As

Publication number Publication date
DK3464762T3 (en) 2021-04-12
ES2866897T3 (en) 2021-10-20
CN109154167A (en) 2019-01-04
PT3464762T (en) 2021-04-28
MY192484A (en) 2022-08-23
FR3051818A1 (en) 2017-12-01
WO2017203148A1 (en) 2017-11-30
EP3464762A1 (en) 2019-04-10
FR3051818B1 (en) 2021-05-28
SG11201810342WA (en) 2018-12-28
CN109154167B (en) 2021-04-13
PL3464762T3 (en) 2021-11-29

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