JP6174912B2 - connector - Google Patents

Description

  The present invention relates to a connector for connecting pipe bodies such as a hose, a tube, and a pipe.

  For example, a plurality of hoses, tubes, and the like are piped in a vehicle brake system and a fuel supply system such as a radiator. A connector is used to connect pipe bodies such as these hoses and tubes.

  As a conventional connector of this type, a female member connected to one tube, a male member inserted into the female member and connected to the other tube, the outer periphery of the tip of the male member, and the inner periphery of the female member There are known ones that include a seal member that seals the gap and a retainer that connects the female member and the male member. Further, when the male member and the female member are rotated relative to each other, the sealing member may be worn and the sealing performance may be deteriorated, so that a structure that prevents both members from rotating is used.

  As a device having such a detent mechanism, the following Patent Document 1 discloses a pipe member connection structure for locking and fixing a male side member and a female side member. The male member has a male pipe provided with a protrusion, and the female member includes a cylindrical connector main body that fits into the male pipe, and a retainer member that locks the connector main body to the locking protrusion. The connection structure is described.

  A plate portion is integrally projected at a predetermined position of the male side member along the axial direction of the male side pipe, and a fitting hole portion is formed in the plate portion. From the outer periphery of the connector body, a plate portion projects in the outer diameter direction, a through hole is formed in the plate portion, and a convex portion that fits into the fitting hole portion projects from the inner surface thereof. .

  Then, the male pipe is inserted into the connector main body, the retainer member is used to lock the connector main body and the male pipe, and the plate portion of the male pipe is inserted into the through hole of the connector main body plate. By fitting the convex portion into the fitting hole, the connector main body and the male side pipe are prevented from rotating and the axial movement is restricted, and the male side member and the female side member are connected.

JP 2006-105201 A

  In the connection structure of Patent Document 1, the male side member is formed with a plate portion provided with a fitting hole, and the female side member is also formed with a plate portion having a through hole and a convex portion. Both the side member and the female side member require a structure for preventing rotation. In this case, if the dimension, shape, etc. of one member is changed, the other member also needs to change the dimension, shape, etc. accordingly, and there is a problem that the versatility is poor.

  Accordingly, an object of the present invention is to provide a connector that can connect a pair of tubes in a non-rotating state to prevent wear of the seal member, and can simplify the non-rotating structure to improve versatility. It is in.

  In order to achieve the above object, the present invention provides a connector for connecting a first tubular body having an annular protrusion formed on its outer periphery and a second tubular body, one end of which connects the second tubular body. A tubular housing having a shape in which the inner periphery of the other end forms an insertion portion of the first tubular body, the outer periphery of the other end has a corner, and an inner periphery of the other end of the housing. A seal member that is disposed and seals the outer periphery of the first tube body and the inner periphery of the housing through which the first tube body is inserted, and is provided integrally or separately with the housing; A retainer that engages with the annular protrusion to retain the first tubular body; and a detent member that fits to the outer periphery of the other end of the housing and is detachably mounted. The rotation preventing member is a protrusion provided on an outer periphery of the first tubular body or around the first tubular body. And having a detent portion engaged with.

  In the connector of the present invention, it is preferable that the outer periphery of the other end of the housing has a regular polygonal shape.

  In the connector according to the present invention, a flange portion is formed from the outer periphery of the other end of the housing, the outer periphery has a polygonal shape, and the fitting recess into which the flange portion is fitted on the housing side of the detent member It is preferable that a locking claw for preventing and retaining the flange portion is formed.

  According to the present invention, the anti-rotation member is fitted and fixed to the outer periphery of the other end of the housing connected to the second tube at one end, and the first tube is inserted into the inner periphery of the other end of the housing. Then, the seal member is inserted, the annular protrusion is engaged with the retainer, and the anti-rotation portion of the anti-rotation member is engaged with the outer periphery or the protrusion of the first tube, so that the The one tube body and the second tube body connected to the housing can be connected in a state where they are prevented from rotating.

  Therefore, even if a rotational force acts on the first tube body or the second tube body, the rotation preventing member can prevent one tube body from rotating with respect to the other tube body, It is possible to reliably prevent the seal member from being worn by the rotation of the first tube body and the housing.

  Further, since the outer periphery of the other end of the housing has a shape having a corner portion, the corner portion of the housing is engaged with a corresponding portion of the rotation prevention member, so that the rotation prevention between the housing and the rotation prevention member is ensured. The

  Furthermore, since the detent member is detachably attached to the housing, even if the shape or structure of the first tube changes, it can be handled by changing the shape or structure of the detent portion of the detent member as appropriate. Therefore, the housing can be shared, and the versatility of the housing is enhanced.

It is a disassembled perspective view which shows one Embodiment of the connector which concerns on this invention. It is a perspective view of the connector. It is a top view of the rotation stopping member which comprises the connector. It is sectional drawing of the connector. The state which connected the 1st pipe body 1 and the 2nd pipe body using the connector is shown, and is sectional drawing in the AA arrow line of FIG. It is a disassembled perspective view which shows other embodiment of the connector which concerns on this invention. It is a perspective view of the connector.

  Hereinafter, an embodiment of the connector of the present invention will be described with reference to FIGS.

  As shown in FIGS. 1 and 5, the connector 10 in this embodiment is for connecting a first tubular body 1 having an annular protrusion 2 formed on its outer periphery and a second tubular body 5 (see FIG. 5). And a substantially cylindrical housing 20, an annular seal member 30, a retainer 40 that holds the first tubular body 1 against the housing 20, and a rotation-prevented state of the housing 20. The rotation prevention member 50 is provided.

  Examples of the pipe include hoses, tubes, pipes, and the like used in automobile brake systems and fuel supply systems such as radiators, but pipes other than these may be used. Further, in this embodiment, the branch pipe 3 is extended from the middle of the first pipe body 1 in the axial direction, and the branch pipe 3 is used as an engaging portion of the detent member 50. Yes. A protrusion may be provided at a predetermined position of the first tubular body 1, and this may be used as an engaging portion of the rotation preventing member 50, and other members (such as a radiator) disposed around the first tubular body 1 may be used. A protrusion may be provided, and this may be used as an engaging portion of the rotation preventing member 50. Further, when the first tubular body 1 is bent in an L shape, for example, the bent portion may be an engaging portion of the rotation preventing member 50.

  As shown in FIG. 1, the housing 20 has a tubular shape in which one end is bent in an elbow shape with respect to the other end, and one end forms a connection portion 21 for connecting the second tubular body 5. The inner periphery of the other end forms an insertion portion 22 into which the distal end portion of the first tubular body 1 is inserted. The housing 20 may be a straight tube or the like, and is not particularly limited.

  As shown in FIGS. 4 and 5, the inside of the housing 20 has a shape that is gradually reduced in diameter from the other end opening side, and a seal member in which the seal member 30 is disposed at the back thereof. An arrangement portion 23 is provided. In addition, a pair of first openings 24 and 24 that are arranged opposite to each other on the outer periphery of the housing 20 and that communicate with the insertion portion 22, and an insertion that is opposed to a position orthogonal to the first openings 24 and 24. A pair of second openings 25 and 25 communicating with the portion 22 are provided.

  And the flange part 27 is formed toward the outer-diameter direction of the housing 20 from the outer periphery of the other end of the housing 20, The outer periphery has comprised the shape which has a corner | angular part. The flange portion 27 of this embodiment has a substantially hexagonal shape having six sides 27a and six corners, but is directed toward the outer diameter direction of the housing 20 from between a pair of adjacent sides 27a, 27a. The positioning rib 28 having a long plate shape is projected (see FIGS. 1 and 2).

  The outer peripheral shape of the flange portion 27 is preferably a 4 to 15 polygonal shape, and more preferably a 6 to 12 polygonal shape. However, as the outer peripheral shape of the flange portion 27, in addition to the polygonal shape described above, for example, a barrel shape obtained by cutting circular opposing positions in parallel, a circular shape in which a part of the circumferential direction is cut, and a circumferential direction A substantially spline shape in which a plurality of mountain-shaped protrusions are provided along the outer periphery of the flange portion 27 may be employed.

  On the other hand, the retainer 40 includes an annular portion 41 through which the first tubular body 1 is inserted, and a pair of first engaging pieces 42 and 42 that are extended so as to bendable from locations facing the circumferential direction of the annular portion 41. The annular portion 41 has a pair of second engagement pieces 43, 43 extending in a bending manner from positions in the circumferential direction perpendicular to the pair of first engagement pieces 42, 42.

  Each of the first engaging pieces 42 and the second engaging pieces 43 has a shape in which a tip portion protrudes in the outer diameter direction, and these are inside the first opening 24 or the second opening 25 of the housing 20. The retainer 40 is attached to the housing 20 by engaging with the circumference.

  Engagement recesses 42a and 43a with which the annular protrusions 2 of the first tubular body 1 are engaged are provided on the inner sides of the distal ends of the engagement pieces 42 and 43, respectively. Further, tapered walls 42b and 43b are formed on the outer peripheral surfaces of the distal ends of the engaging pieces 42 and 43, respectively, and the diameter of the engaging pieces 42 and 43 is reduced toward the distal ends. Furthermore, knob pieces 42c and 42c are extended outwardly from the tip end portions of the pair of first engaging pieces 42 and 42 toward the annular portion 41 side (see FIG. 4).

  When the first tube 1 is inserted into the insertion portion 22 of the housing 20, the annular protrusion 2 of the first tube 1 is engaged with the engagement recesses 42 a and 43 a of the engagement pieces 42 and 43. In this state, when a pulling force is applied to the first tubular body 1, the retainer 40 is pulled, and the tapered walls 42 b and 43 b on the outer circumferences of the respective engagement pieces 42 and 43 are connected to the first opening 24 or the first. In order to contact the opening edge of the two openings 25 and further reduce the diameter, the annular protrusion 2 of the first tube 1 is more strongly engaged with the engagement recesses 42a and 43a, and the first tube 1 Pulling out is prevented.

  On the other hand, when it is desired to pull out the first tubular body 1, the knobs 42c, 42c of the pair of first engaging pieces 42, 42 are pressed with fingers to prevent the retainer 40 from moving in the pulling direction. When the body 1 is pulled strongly, the tapered walls 42b and 43b on the outer circumferences of the tips of the engagement pieces 42 and 43 do not come into contact with the opening edges of the first opening 24 or the second opening 25. 42 and 43 are permitted to spread outward, the annular protrusion 2 is detached from the engaging recesses 42a and 43a, and the first tubular body 1 can be pulled out.

  Such an engagement structure of the connector is disclosed in, for example, Japanese Patent Application Laid-Open No. 2002-213671, and the detailed description thereof will be omitted. However, this invention is not limited to the engagement structure of the said embodiment, Various engagement structures can be employ | adopted. For example, in this embodiment, a separate retainer 40 is attached to the housing 20, but the retainer may be provided integrally with the housing 20.

  On the other hand, the anti-rotation member 50 that is fitted to the outer periphery of the other end of the housing 20 and is detachably attached to the housing 20 includes a disc-shaped main body 51 having a predetermined thickness and a tube insertion hole 53 formed in the center. Have.

  On the surface of the main body 51 on the housing 20 side, a fitting recess 55 into which the flange portion 27 is fitted is formed with a predetermined depth. The fitting recess 55 in this embodiment has a substantially hexagonal shape having a plurality of sides 55a corresponding to the flange portion 27 and the positioning rib 28 of the housing 20, and between a pair of adjacent sides 55a, 55a. The positioning concave portion 57 having a rectangular concave shape is formed.

  Then, as shown in FIG. 1, the positioning ribs 28 of the housing 20 are aligned with the positioning recesses 57 of the anti-rotation member 50, and the flange portion 27 of the housing 20 is pushed in along the axial direction of the anti-rotation member 50. The positioning ribs 28 are fitted and positioned in the positioning recesses 57, and the sides 27 a of the flange portions 27 are engaged with the sides 55 a of the fitting recesses 55, respectively. It fits and it mounts | wears with the rotation prevention member 50 being the rotation prevention with respect to the housing 20 (refer FIG. 2).

  The inner circumferential shape of the fitting recess 55 may be a shape having a recess corresponding to the corner of the flange 27 so that the flange 27 is fitted, and has a polygonal shape of 4 to 15 corners. It is preferable that there is a polygonal shape of 6 to 12 corners. Corresponding to the shape of the flange portion 27, the inner peripheral shape of the fitting recess 55 is a barrel-shaped shape obtained by cutting a circular opposing position in parallel, a circular shape in which a part in the circumferential direction is cut, A substantially spline shape in which a plurality of mountain-shaped recesses are provided along the direction can also be used.

  Further, a pair of locking claws 60 and 60 that hold the flange portion 27 of the housing 20 in place are provided at opposite positions on the outer periphery of the main body 51 and perpendicular to the positioning recess 57. Is provided.

  Each locking claw 60 protrudes along the side 55a of the fitting recess 55 via notches 58 and 59 provided on the outer periphery and inner periphery of the main body, and the tip thereof is the inner diameter of the main body 51. A claw portion 62 that protrudes in the direction and engages with the peripheral edge of one side of the flange portion 27 of the housing 20 is formed. A tapered surface 62 a is formed on the inner surface of the claw portion 62.

  Further, as shown in FIGS. 1 to 3, a pair of end faces on the positioning recess 57 side of the main body 51, which are formed in an arc shape along the outer peripheral edge of the main body 51 on both sides in the circumferential direction of the locking claw 60. The protective walls 63 and 63 are projected. These protective walls 63, 63 protect the locking claw 60 from an external force or the like, and make it difficult to remove the locking claw 60 from the flange portion 27 of the housing 20.

  The protective wall 63 of this embodiment protrudes along the outer peripheral edge of one end surface of the main body 51, and a step is provided between the side 55a of the fitting recess 55 (see FIG. 3). The portion indicated by hatching H) may be built up to form the inner surface of the protective wall 63 flush with the side 55a of the fitting recess 55.

  Further, from a predetermined position on the end surface of the main body 51 on the side opposite to the fitting recess 55, an anti-rotation portion 65 that fits to the outer periphery of the first tubular body 1 or a projection formed on the first tubular body. Is provided.

  As shown in FIGS. 1, 2, and 4, the anti-rotation portion 65 in this embodiment has a predetermined width along the circumferential direction of the main body 51 and a predetermined length along the axial direction of the main body 51. It has a long plate shape. A notch-shaped recess 66 is formed at the tip of the anti-rotation portion 65, with both side surfaces parallel to each other and the inner surface in the back forming an arc shape (see FIGS. 1 and 4). As shown in FIGS. 2 and 5, the recess 66 of the rotation preventing portion 65 is engaged with the branch pipe 3 of the first tube 1, so that the rotation preventing member 50 is attached to the first tube 1. Accordingly, the housing 20 in which the flange 27 is fitted in the fitting recess 55 is also prevented from rotating.

  As the structure of the rotation preventing portion 65, for example, a concave portion or a notch is provided directly on the main body 51, and this is engaged with the outer periphery or protrusion of the first tubular body 1, or A boss-shaped or flange-shaped detent portion may be provided, and a recess or notch may be provided on the boss-shaped or flange-shaped non-rotating portion, and the outer periphery or protrusion of the first tube 1 may be engaged. It can be set as appropriate according to the shape of the projection and the like.

  Next, an example of how to use the connector 10 having the above configuration will be described.

  First, the seal member 30 is inserted from the other end opening of the housing 20 and arranged in the seal member arrangement portion 23, and then the retainer 40 is inserted, and the tab pieces 42c of the first engagement pieces 42 are inserted into the first opening portions. 24, the front end of each first engagement piece 42 is engaged with each first opening 24, and the front end of each second engagement piece 43 is engaged with each second opening 25. As a result, the retainer 40 is attached to the housing 20 in a retaining state (see FIG. 4).

  Next, as shown in FIG. 1, the positioning ribs 28 of the housing 20 are aligned with the positioning recesses 57 of the anti-rotation member 50, and the flange portion 27 of the housing 20 is pushed in along the axial direction of the anti-rotation member 50. Then, the flange part 27 of the housing 20 presses the taper surface 62a of the claw part 62, and the pair of locking claws 60, 60 are bent outward.

  When the positioning rib 28 is fitted into the positioning recess 57, the housing 20 is positioned with respect to the rotation preventing member 50. In this state, the plurality of corner portions of the flange portion 27 correspond to the corresponding corner portions of the fitting recess 55. And the plurality of sides 27a of the flange portion 27 are respectively engaged with the corresponding sides 55a of the fitting recess 55, so that the flange portion 27 is fitted into the fitting recess 55, The rotation preventing member 50 is prevented from rotating with respect to the housing 20. Further, the pair of locking claws 60 and 60 are elastically restored, and each claw portion 62 engages with the peripheral edge of one side surface of the flange portion 27, thereby preventing the rotation prevention member 50 from rotating with respect to the housing 20 and coming off. It can be mounted in a stopped state (see FIGS. 2 and 4).

  As described above, according to this embodiment, the flange portion 27 is fitted into the fitting concave portion 55 by a simple operation of pushing the flange portion 27 of the housing 20 into the fitting concave portion 55 of the rotation preventing member 50. Since the flange portion 27 is retained by the retaining claws 60, the assembly workability between the housing 20 and the rotation preventing member 50 can be improved. Further, since it is only necessary to provide the flange portion 27 having a polygonal outer periphery on the outer periphery of the other end of the housing 20, the structure of the housing 20 can be made relatively simple, and the manufacturing cost can be reduced. .

  When the first tube 1 and the second tube 5 are connected, the recess 66 of the rotation preventing portion 65 of the rotation preventing member 50 is aligned with the branch tube 3 of the first tube 1 so that the first tube 1 When the housing 20 to which the anti-rotation member 50 is attached is pushed into the body 1, the distal end portion of the first tubular body 1 is inserted into the insertion portion 22 of the housing 20, and the annular protrusion 2 is formed as a retainer. The engagement recesses 42 a of the 40 first engagement pieces 42 and the engagement recesses 43 a of the second engagement pieces 43 are respectively engaged. At the same time, the recess 66 of the anti-rotation portion 65 of the anti-rotation member 50 can be engaged with the outer periphery of the branch pipe 3 of the first tubular body 1. As a result, the anti-rotation member 50 can be connected to the first tubular body 1 while being prevented from rotating, and the first tubular body 1 and the second pipe connected to the housing 20 via the anti-rotation member 50. The body 5 can be connected in a state where the rotation is prevented (see FIGS. 2 and 5). Further, the distal end portion of the first tube 1 is inserted into the inner periphery of the seal member 30, and the outer periphery of the distal end portion of the first tube 1 and the inner periphery of the insertion portion 22 of the housing 20 are sealed by the seal member 30. The

  Therefore, even if a rotational force acts on the first tube body 1 or the second tube body 5, the rotation preventing member 50 prevents the first tube body 1 and the second tube body 5 from rotating relatively. Therefore, it is possible to reliably prevent the seal member 30 disposed in the seal member disposition portion 23 of the housing 20 from being worn by the rotation of the first tubular body 1, the housing 20, and the like.

  At this time, since the flange portion 27 having a substantially hexagonal shape is provided on the outer periphery of the other end of the housing 20, the plurality of sides 27 a are connected to the plurality of sides 55 a of the fitting recess 55 of the rotation preventing member 50. The housing 20 and the rotation preventing member 50 are more reliably prevented from rotating.

  By the way, when it is desired to release the connection between the first tubular body 1 and the second tubular body 5 for maintenance or the like, the knob pieces 42c and 42c of the pair of first engaging pieces 42 and 42 of the retainer 40 are designated. When the first tubular body 1 is pulled strongly while holding the retainer 40 and preventing the retainer 40 from moving in the pulling direction, the tapered walls 42b and 43b on the outer circumferences of the distal ends of the engagement pieces 42 and 43 become the first opening portion. 24 or the opening edge of the second opening 25, the engagement pieces 42 and 43 are allowed to spread outward, and the annular protrusion 2 is disengaged from the engagement recesses 42a and 43a. One tubular body 1 can be pulled out.

  Further, when it is desired to remove the detent member 50 from the housing 20, the housing 20 is strongly pulled against the detent member 50. Then, the pair of locking claws 60, 60 are pushed outward by the flange portion 27 via the claw portion 62, and the flange portion 27 comes off from the fitting recess 55, thereby preventing the rotation from the housing 20. The member 50 can be removed.

  As described above, in this connector 10, since the detent member 50 is detachably attached to the housing 20, the detent is prevented even if the shape or structure of the first tubular body 1 is changed. This can be dealt with by appropriately changing the shape, structure, etc. of the detent portion of the member 50. As a result, the housing 20 can be shared and the versatility of the housing 20 can be enhanced.

  6 and 7 show another embodiment of the connector of the present invention. Note that substantially the same parts as those of the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

  In the connector 10a of this embodiment, the flange portion 27 of the housing 20a has a regular hexagonal shape composed of six sides 27a. Correspondingly, the fitting recess 55 of the rotation preventing member 50a has six sides. It has a regular hexagonal shape consisting of 55a. The regular polygonal shapes of the flange portion 27 and the fitting recess 55 are not limited to regular hexagonal shapes, and are preferably regular polygonal shapes of 6 to 12 angles.

  In this embodiment, since the outer periphery of the other end of the housing 20, that is, the outer periphery of the flange portion 27 forms a regular polygon (here, a regular hexagon), the assembly angle of the detent member 50a with respect to the housing 20a is set. The angle can be changed according to the center angle of the regular polygon (the angle between adjacent corners and the center, for example, 60 ° in the case of a regular hexagon), and the first tubular body 1 and its accessories. Depending on the shape, the mounting angle of the connector 10a with respect to the first tubular body 1 can be changed, and the versatility of the detent member 50a can be enhanced.

DESCRIPTION OF SYMBOLS 1 1st pipe body 2 Annular protrusion 5 2nd pipe body 10, 10a Connector 20, 20a Housing 21 Connection part 22 Insertion part 27 Flange part 30 Seal member 40 Retainer 50, 50a Anti-rotation member 55 Fitting recessed part 60 Locking claw

Claims (2)

A connector for connecting the first tubular body having an annular protrusion formed on the outer periphery and the second tubular body,
A tubular housing in which one end forms a connection part for connecting the second tubular body, the inner periphery of the other end forms an insertion part of the first tubular body, and the outer periphery of the other end forms a corner. ,
A seal member that is disposed on the inner periphery of the other end of the housing and seals the outer periphery of the first tube and the inner periphery of the housing through which the first tube is inserted;
A retainer that is provided integrally with or separately from the housing, engages with an annular protrusion of the first tubular body, and retains the first tubular body;
A non-rotating member that fits to the outer periphery of the other end of the housing, is derotated and is detachably mounted;
The anti-rotation member is an anti-rotation member that engages with a main body having an insertion hole through which the first tubular body is inserted, and a protrusion provided on an outer periphery of the first tubular body or around the first tubular body. And
The main body of the detent member is provided with a fitting recess into which the outer periphery of the other end of the housing is fitted by pushing the other end of the housing along the axial direction of the insertion hole. Characteristic connector. A flange is formed from the outer periphery of the other end of the housing, and the outer periphery has a polygonal shape.
The connector according to claim 1, wherein the flange portion is fitted in a fitting recess, and the main body is formed with a locking claw for retaining the flange portion.