CN211500390U - Safety structure of hollow anti-theft door - Google Patents

Abstract

The utility model provides a cavity burglary-resisting door security structure which characterized in that: this structure is including setting up the hollow cat eye hole on the burglary-resisting door and installing in the downthehole cat eye of cat eye, the cat eye includes a lens section of thick bamboo, back sleeve and spacing, back telescopic one end is provided with the second holding ring, the second holding ring burglary-resisting door is close to indoor one side cat eye hole and contradicts, on the cat eye hole with the inconsistent region of second holding ring is provided with first graphite layer, on the second holding ring with the region that the cat eye hole contradicts is provided with the second graphite layer, still be provided with first spacing groove on the lens section of thick bamboo, be provided with the second spacing groove on the back sleeve, spacing set up in first spacing groove with the restriction in the second spacing groove a lens section of thick bamboo with back sleeve relatively rotates, realizes dual guarantee, has improved the factor of safety of burglary-resisting door.

Description

Safety structure of hollow anti-theft door

Technical Field

The utility model belongs to the technical field of the burglary-resisting door safety, especially, relate to a hollow burglary-resisting door safety structure in inside.

Background

At present, the anti-theft door on the market is mainly a mechanical anti-theft lock, and the door is opened and closed by rotating a door handle clockwise and anticlockwise. The hidden safety hazard of the anti-theft door is that a thief can disassemble the cat eye on the anti-theft door and then use the combined curved rod to penetrate through the through hole on the cat eye, so that the door handle in an outdoor push-pull room is used for breaking the anti-theft door. At present, burglary-resisting door on the market is hollow burglary-resisting door usually, to this kind of burglary-resisting door, it is also hollow to have the cat eye hole in succession, rely on both sides to support around the burglary-resisting door completely, however the cat eye on the burglary-resisting door mainly is through a lens section of thick bamboo and back sleeve threaded connection, the thief is as long as will expose at the lens section of thick bamboo of outdoor one side and tear to the direction of principle burglary-resisting door, can make and be close to producing great pressure between the back sleeve of indoor one side and the cat eye hole, because frictional force is pressure multiplication coefficient of friction, consequently, the thief can make the frictional force between back sleeve and the cat eye hole be greater than the screw thread effort between a lens section of thick bamboo and the back sleeve through this kind of mode, and then rotate a lens section of thick bamboo when tearing a lens section of thick bamboo, make a lens section of thick bamboo and back sleeve relative rotation and separation, there is great potential. Therefore, a safety structure of a hollow anti-theft door that effectively prevents the lens barrel from being separated from the rear sleeve barrel by rotating at the outdoor side has become a practical need.

Disclosure of Invention

An embodiment of the utility model provides a cavity burglary-resisting door safety structure aims at solving and how to provide one kind and effectively prevents a lens section of thick bamboo outdoor one side through rotatory and with the cavity burglary-resisting door safety structure of back sleeve phase separation.

The embodiment of the utility model provides a realize like this, a burglary-resisting door safety structure, its characterized in that: the structure comprises a cat eye hole with a solid inner wall arranged on the anti-theft door, a cat eye arranged in the cat eye hole, and a first bearing and a second bearing arranged between the cat eye and the solid inner wall of the cat eye hole, wherein the inner diameter of the cat eye hole is adapted to the outer diameter of the bearing, the cat eye comprises a lens barrel and a rear sleeve, the lens barrel is a hollow sleeve with one end provided with a lens component, the rear sleeve is another hollow sleeve matched with the lens barrel, the lens barrel is provided with an external thread, the rear sleeve is provided with internal threads, the lens barrel is sleeved with the rear sleeve through the threads, the inner rings of the first bearing and the second bearing are sleeved on the rear sleeve, and the outer rings of the first bearing and the second bearing are fixed with the solid inner wall of the cat-eye hole, so that the rear sleeve is driven to synchronously rotate with the lens barrel when the lens barrel is rotated.

In one embodiment, the outer races of the first and second bearings are bonded to the solid inner wall of the cat-eye hole.

In one embodiment, the outer diameter of the outer rings of the first bearing and the second bearing is equal to the inner diameter of the solid inner wall of the cat-eye hole.

In one embodiment, the inner diameters of the first bearing inner ring and the second bearing inner ring are equal to the outer diameter of the rear sleeve outer ring.

In one embodiment, a lens assembly and a first positioning ring are arranged at one end of the lens barrel, and an external thread is arranged on the outer surface of the other end of the lens barrel.

In one embodiment, a second positioning ring is arranged at one end of the rear sleeve, and an internal thread is arranged on the inner surface of the other end of the rear sleeve.

In one embodiment, the first bearing is disposed on the rear sleeve at an end adjacent to the second retaining ring.

In one embodiment, the second bearing is disposed on an end of the rear sleeve distal from the second retaining ring.

In one embodiment, a gap is left between the first bearing and the second positioning ring.

In one embodiment, the outer ring outer diameter of the first bearing and the second bearing is smaller than the maximum outer diameter of the second positioning ring.

The utility model discloses a be close to indoor one side at a lens section of thick bamboo and back sleeve and set up second spacing groove and second bar spacing groove, with a lens section of thick bamboo and back sleeve relative rotation extremely second spacing groove and second bar spacing groove position correspondingly, and then be close to indoor one side slip insert bar spacing at the burglary-resisting door, and restrict a lens section of thick bamboo and back telescopic relative rotation simultaneously for the cat eye of burglary-resisting door can only follow and take out spacing indoor one side relative rotation lens section of thick bamboo and back sleeve and dismantle. Simultaneously set up first graphite layer and second graphite layer in the telescopic second holding ring of back and the area of cat eye hole contact to reduce the coefficient of friction between second holding ring and the cat eye hole, thereby guarantee that the frictional force effect between lens section of thick bamboo and the back sleeve can be greater than the frictional force effect that produces between second holding ring and the cat eye hole, avoid the thief to unscrew the cat eye through the mode that increases pressure between second holding ring and the cat eye hole outdoors, realize dual guarantee, the factor of safety of burglary-resisting door has been improved.

Drawings

FIG. 1 is an exploded view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the safety peep hole of the present invention installed on the hollow anti-theft door;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

a cat eye 10, a lens barrel 11, a rear sleeve 12, a limit strip 13, external threads 111,

a lens assembly 112, a first positioning ring 113, a first limiting groove 114,

a second positioning ring 121, a second limiting groove 122, internal threads 123, a first graphite layer 1414,

second graphite layer 15, security door 20

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The existing anti-theft door is opened and closed by rotating a door handle clockwise and anticlockwise, and a potential safety hazard of the existing anti-theft door is that a thief can break the anti-theft door by detaching a cat eye on the anti-theft door and then adopting a combined curved rod to penetrate through a through hole on the cat eye, so that the door handle in an outdoor push-pull room is used for breaking the anti-theft door. At present, the cat eye on the burglary-resisting door mainly is through a lens section of thick bamboo and back sleeve threaded connection, because there is great frictional force usually between the through-hole of back sleeve and burglary-resisting door 20, consequently the thief only needs a rotatory lens section of thick bamboo can make a lens section of thick bamboo and back sleeve phase separation easily, has great potential safety hazard. The utility model discloses a be close to indoor one side at a lens section of thick bamboo 11 and back sleeve 12 and set up first spacing groove 114 and second graphite layer 15, with a lens section of thick bamboo 11 and back sleeve 12 relative rotation extremely first spacing groove 114 and second graphite layer 15 are put correspondingly, and then are close to indoor one side slip at burglary-resisting door 20 and insert the spacing 13 of bar, and restrict the relative rotation of a lens section of thick bamboo 11 and back sleeve 12 simultaneously for the cat eye 10 of burglary-resisting door 20 can only follow the indoor one side relative rotation lens section of thick bamboo 11 and back sleeve 12 that can take spacing 13 out and dismantle. Simultaneously set up first graphite layer 14 and second graphite layer 15 in the second holding ring 121 of back sleeve 12 and the area that the cat eye hole contacted, in order to reduce the coefficient of friction between second holding ring 121 and the cat eye hole, thereby guarantee that the frictional force effect between lens section of thick bamboo 11 and back sleeve 12 can be greater than the frictional force effect that produces between second holding ring 121 and the cat eye hole, avoid the thief to unscrew cat eye 10 outdoor through the mode that increases pressure between second holding ring 121 and the cat eye hole, realize dual guarantee, the factor of safety of burglary-resisting door has been improved.

Referring to fig. 1, a hollow security door safety structure, the structure includes a hollow cat eye hole formed on a security door 20 and a cat eye 10 installed in the cat eye hole, the cat eye 10 includes a lens barrel 11 and a rear sleeve 12, the lens barrel 11 is sleeved with the rear sleeve 12, the lens barrel 11 is inserted into the cat eye 10 hole of the security door 20 from the outdoor side of the security door 20, the rear sleeve 12 is inserted into the cat eye 10 hole of the security door 20 from the indoor side of the security door 20 to be sleeved with the lens barrel 11, the prior art only fixes the lens barrel 11 and the rear sleeve on the security door 20 by matching the indoor side and the outdoor side of the security door 20 in the above manner, the prior art cat eye 10 is generally designed for a metal security door 20, while the prior art metal security door 20 is generally of a hollow structure, because the solid metal door is too heavy, which causes the hinge shaft of the side to be difficult to support its weight, therefore, the cat eye 10 of the hollow anti-theft door 20 does not contact with the cat eye 10 hole, and further no friction force exists, but a thief can pull the cat eye 10 outwards and rotate the cat eye simultaneously, so that a positioning structure of the cat eye 10 close to the indoor side generates larger friction force with the cat eye hole, the trend of keeping the rear sleeve 12 and the cat eye hole relatively static is larger than the trend of keeping the rear sleeve 12 and the lens barrel 11 in threaded fixed connection, the lens sleeve is rotated to be separated from the rear sleeve 12, the thief can easily separate the rear sleeve 12 from the rear sleeve 12 by rotating the lens barrel 11 on the outdoor side, and potential safety hazards exist.

Preferably, the one end of back sleeve 12 is provided with second holding ring 121, second holding ring 121 burglary-resisting door 20 is close to indoor one side cat eye hole and contradicts, cat eye hole with the inconsistent region of second holding ring 121 is provided with first graphite layer 14, second holding ring 121 with the region that cat eye hole contradicts is provided with second graphite layer 15 to reduce the coefficient of friction between second holding ring 121 and the cat eye hole, thereby guarantee that the frictional force effect between lens section of thick bamboo 11 and the back sleeve 12 can be greater than the frictional force effect that produces between second holding ring 121 and the cat eye hole, avoid the thief to unscrew cat eye 10 outdoor through the mode that increases pressure between second holding ring 121 and the cat eye hole.

Referring to fig. 1, the utility model discloses a pick-proof cat eye 10, including a lens section of thick bamboo 11, back sleeve 12 and spacing 13, a lens section of thick bamboo 11 with back sleeve 12 cup joints mutually, a lens section of thick bamboo 11 is close to the cat eye hole on outdoor one side inserts the burglary-resisting door 20 from burglary-resisting door 20, back sleeve 12 is close to indoor one side from burglary-resisting door 20 and inserts the cat eye hole on burglary-resisting door 20 and with a lens section of thick bamboo 11 cup joints mutually, and then cooperatees indoor one side and outdoor one side of burglary-resisting door 20 with a lens section of thick bamboo 11 and back cover and fix on the burglary-resisting door.

Preferably, a lens barrel 11 is a hollow sleeve with one end provided with a lens component 112, the rear sleeve 12 is another hollow sleeve matched with the lens barrel 11, the lens barrel 11 is provided with an external thread 111, the rear sleeve 12 is provided with an internal thread 123, the lens barrel 11 is sleeved with the rear sleeve 12 through a thread, the lens barrel 11 is provided with a first limit groove 114, the rear sleeve 12 is provided with a second limit groove 122, and the limit strip 13 is arranged in the first limit groove 114 and the second limit groove 122 to limit the lens barrel 11 and the rear sleeve 12 to rotate relatively.

Preferably, one end of the lens barrel 11 is provided with a lens assembly 112 and a first positioning ring 113. The lens assembly 112 is formed by matching optical assemblies commonly found in the cat eye 10 in the prior art, and this embodiment is not specifically described. The first positioning ring 113 is used for abutting against a cat eye hole on one side of the security door close to the outdoor when being installed, so that positioning is realized. The outer surface of the other end of the lens barrel 11 is provided with an external thread 111, and the external thread 111 is used for being matched with an internal thread 123 on the rear sleeve 12 to realize threaded connection.

Preferably, the internal surface of rear sleeve 12 one end is provided with internal thread 123, the screw thread cooperatees with the external screw thread 111 of a lens section of thick bamboo 11 other end, the other end of rear sleeve 12 is provided with second holding ring 121, second holding ring 121 is used for conflicting with the cat eye hole that the burglary-resisting door is close to indoor one side when the installation, and realizes the location.

Preferably, one end of the lens barrel 11, which is far away from the first positioning ring 113, is provided with a first limiting groove 114, the first limiting groove 114 is specifically arranged on the external thread 111 on the outer surface of the lens barrel 11, and the length of the first limiting groove 114 is equal to that of the limiting strip 13, so that when the thickness of the security door is small, the limiting strip 13 can be completely inserted into the first limiting groove 114, and the situation that the limiting strip 13 extends out to one side of the cat eye 10, which is close to the indoor side, and is longer than the first limiting groove 114 is avoided. The width of the first limiting groove 114 is adapted to the width of the limiting bar 13, so that the limiting bar 13 can be smoothly inserted into the first limiting groove 114 within the allowable range of tolerance. The height of the first limiting groove 114 is half of the height of the limiting strip 13, and correspondingly, the height of the second limiting groove 122 formed in the rear sleeve 12 should also be half of the height of the limiting strip 13, so that the limiting strip 13 can be smoothly inserted into the first limiting groove 114 within the range allowed by tolerance, and the first limiting groove 114 and the second limiting groove 122 are just locked up and down, thereby limiting the relative rotation between the lens sleeve and the rear sleeve 12.

Preferably, one end of the rear sleeve 12 close to the second positioning ring 121 is provided with a second limiting groove 122, the second limiting groove 122 is specifically arranged on an internal thread 123 on the inner surface of the rear sleeve 12, and the length of the second limiting groove 122 is equal to that of the limiting strip 13, so that when the thickness of the anti-theft door is small, the limiting strip 13 can be completely inserted into the second limiting groove 122, and the situation that the limiting strip 13 extends out towards one indoor side of the cat eye 10 due to being longer than the second limiting groove 122 is avoided. The width of the second limiting groove 122 is adapted to the width of the limiting bar 13, so that the limiting bar 13 can be smoothly inserted into the second limiting groove 122 within the allowable range of tolerance. The height of the second limiting groove 122 is half of the height of the limiting strip 13, and correspondingly, the height of the first limiting groove 114 formed in the lens barrel 11 should also be half of the height of the limiting strip 13, so that the limiting strip 13 can be smoothly inserted into the second limiting groove 122 within the range allowed by tolerance, and the first limiting groove 114 and the second limiting groove 122 are just locked up and down, thereby limiting the relative rotation between the lens sleeve and the rear sleeve 12.

Preferably, the end of the second position-limiting groove 122 close to the second positioning ring 121 is further provided with a positioning groove, and the positioning groove is used for positioning the position-limiting strip 13, so as to avoid the situation that the distance between the first positioning ring 113 and the second positioning ring 121 is too large when the anti-theft door is too thick, so that the position-limiting strip 13 is inserted too deeply and is difficult to be taken out.

Preferably, the cross-sectional shape of the position-limiting bar 13 is a strip-shaped body adapted to the maximum cross-sectional shape of the combined hollow groove body of the first position-limiting groove 114 and the second position-limiting groove 122, in this embodiment, when the lens barrel 11 and the rear sleeve 12 are rotated to a state where the first position-limiting groove 114 is just opposite to the second position-limiting groove 122, the distance between the first positioning ring 113 and the second positioning ring 121 is different according to the thickness of the security door, so that the first position-limiting groove 114 and the second position-limiting groove 122 can only ensure that the longitudinal center lines are overlapped, and the transverse center lines are dislocated. Therefore, in a case where the security door is particularly thick, the lens barrel 11 and the rear sleeve 12 may rotate only a few turns to be sleeved with each other, and at this time, the distance between the first positioning ring 113 and the second positioning ring 121 is particularly large, and if the spacing bar 13 is too short, the spacing bar 13 can only be inserted into the second spacing groove 122 of the rear sleeve 12, and cannot be inserted into the first spacing groove 114, and the relative rotation between the lens barrel 11 and the rear sleeve 12 cannot be limited. Normally, the thickness of the anti-theft door will be smaller than the sum of the lengths of the lens barrel 11 and the rear sleeve 12 of the cat eye 10, but in order to avoid this situation as much as possible, in this embodiment, the length of the position-limiting strip 13 is equal to the length of the rear sleeve 12, so that the position-limiting strip 13 can be inserted into the first position-limiting groove 114 and the second position-limiting groove 122 simultaneously within the length range in which the lens barrel 11 and the rear sleeve 12 can be effectively screwed, and thus the function of limiting the relative rotation between the lens barrel 11 and the rear sleeve 12 is achieved.

Therefore, the utility model discloses a lens section of thick bamboo and back sleeve are close to indoor one side and set up second spacing groove and second bar spacing groove, with lens section of thick bamboo and back sleeve relative rotation extremely second spacing groove and second bar spacing groove are corresponding ground position, and then are close to indoor one side slip insert bar spacing at the burglary-resisting door, and restrict lens section of thick bamboo and back telescopic relative rotation simultaneously for the cat eye of burglary-resisting door can only follow the indoor one side relative rotation lens section of thick bamboo and the back sleeve that can take spacing out and dismantle. Simultaneously set up first graphite layer and second graphite layer in the telescopic second holding ring of back and the area of cat eye hole contact to reduce the coefficient of friction between second holding ring and the cat eye hole, thereby guarantee that the frictional force effect between lens section of thick bamboo and the back sleeve can be greater than the frictional force effect that produces between second holding ring and the cat eye hole, avoid the thief to unscrew the cat eye through the mode that increases pressure between second holding ring and the cat eye hole outdoors, realize dual guarantee, the factor of safety of burglary-resisting door has been improved.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (5)

1. The utility model provides a cavity burglary-resisting door security structure which characterized in that: the structure comprises a hollow cat eye hole arranged on the anti-theft door and a cat eye arranged in the cat eye hole, wherein the cat eye comprises a lens barrel, a rear sleeve and a limit strip, the lens barrel is a hollow sleeve with a lens component arranged at one end, the rear sleeve is another hollow sleeve matched with the lens barrel, an external thread is arranged on the lens barrel, an internal thread is arranged on the rear sleeve, the lens barrel is sleeved with the rear sleeve through the thread, a second positioning ring is arranged at one end of the rear sleeve, the anti-theft door with the second positioning ring is abutted against the cat eye hole at one indoor side, a first graphite layer is arranged on a region abutted against the second positioning ring on the cat eye hole, a second graphite layer is arranged on a region abutted against the cat eye hole on the second positioning ring, a first limit groove is further arranged on the lens barrel, a second limit groove is arranged on the rear sleeve, spacing set up in first spacing groove with the restriction of second spacing inslot a lens section of thick bamboo with back sleeve rotates relatively, and the one end that is close to the second holding ring on the back sleeve is provided with first bearing, and the one end of keeping away from the second holding ring on the back sleeve is provided with the second bearing, splice mutually between the outer lane of first bearing and second bearing and the solid inner wall of cat eye hole, the external diameter of first bearing and second bearing outer lane equals the internal diameter of the solid inner wall of cat eye hole, the internal diameter of first bearing and second bearing inner circle equals the external diameter of back sleeve outer lane.

2. The hollow security door structure of claim 1, wherein one end of the lens barrel is provided with the lens assembly and the first positioning ring, and the outer surface of the other end of the lens barrel is provided with an external thread.

3. The hollow burglary-resisting door security structure of claim 2, wherein the inner surface of the other end of the rear sleeve is provided with an internal thread.

4. The hollow security door structure of claim 3, wherein a gap is left between said first bearing and said second retaining ring.

5. The hollow security door structure of claim 4, wherein the outer race outer diameter of said first and second bearings is less than the maximum outer diameter of said second positioning ring.

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