JP2015004381A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector which can easily perform the connection and release of a first pipe body and a second pipe body by surely pressing a base of a retainer even if the connector is arranged in a narrow place.SOLUTION: This connector 10 comprises a housing 20 in which a pair of slits 32 are formed, and a retainer 50 which has an arm 51, a base 53 and an engagement protrusion 57, and is prevented in slip-off by being engaged with an annular protrusion 1a of a first pipe body 1. A wall 35 is erected from a position in which an external periphery of the housing 20 adjoins the base 53 of the retainer 50, a salient part 37 with which a tip of a rod-shaped member can be engaged is formed at the retainer side, a height of a portion in which the base 53 of the retainer 50 adjoins the wall 35 is set lower than an engagement face of the salient part 37, the base 53 and the wall 35 are made to communicate with each other, and the tip of the rod-shaped member can be inserted into the engagement face side of the salient part 37.

Description

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

  For example, a fuel supply system such as an automobile internal combustion engine system, a brake system, and a radiator is provided with a plurality of hoses and tubes. A connector is used to connect pipe bodies such as these hoses and tubes. Further, after connecting the pipes, there is a case where it is desired to release the connection between the pipes for maintenance or the like.

  As a connector that can freely attach and detach such tubular bodies, for example, in Patent Document 1 below, the second tubular body is connected to the first tubular body, and one end is a connecting portion of the second tubular body. The other end forms an insertion portion for the first tubular body, and a housing in which a pair of slits are provided on the peripheral wall on the insertion portion side, a pair of arms inserted into the pair of slits, and both arms are connected. It has a gate shape with a base that engages, and an engaging protrusion protrudes from the inside of each arm, and the engaging protrusion protrudes from the slit to the inner periphery of the insertion portion, and engages with the flange portion of the first tubular body. A connector with a retainer for locking is described.

  When releasing the connection between the pipes, the base of the retainer is pressed toward the housing, so that the pair of arms expands, and the engagement protrusions are disengaged from the flange of the first pipe. Since the engagement is released, the connection between the first tube body and the second tube body can be released by pulling out the first tube body from the insertion portion of the housing in this state.

International Publication WO2013 / 031272 Pamphlet

  However, when the connector disclosed in Patent Document 1 is used in a narrow space such as an engine room of an automobile, for example, it is difficult to insert a hand and push the base portion of the retainer with a finger. It was sometimes difficult to disconnect the tube.

  Therefore, even if the connector is arranged in a narrow place, the base portion of the retainer can be reliably pushed and the connection between the first tube body and the second tube body can be easily released. To provide a connector.

  In order to achieve the above object, the present invention is a connector for connecting a first tubular body having an annular protrusion formed on the outer periphery thereof and a second tubular body, and is formed in a cylindrical shape, one end of which is formed A housing having a connection portion for connecting the second tubular body, the other end forming an insertion portion of the first tubular body, and a pair of slits provided at opposite positions of the peripheral wall on the insertion portion side; A pair of arms inserted into the slit, a base portion connected to the pair of arms and disposed on an outer periphery of the housing, and an engaging protrusion projecting on the inner side of each arm. And a retainer that protrudes from the front slit to the inner periphery of the insertion portion of the housing and engages with the annular protrusion of the first tubular body to prevent the retainer from being attached. The housing includes a base portion of the retainer. By pressing against the housing side, the pair of An expansion guide wall is provided for opening the arm and releasing the engagement between the engagement protrusion and the annular protrusion, and the wall portion extends from a position adjacent to the base of the retainer on the outer periphery of the housing. On the retainer side of the wall portion, an engaging portion made of a convex portion, a concave portion or a through-hole that can be engaged with the tip of a rod-like member such as a tool is formed, and the base portion of the retainer, The height of the portion adjacent to the wall portion is lower than the surface of the engaging portion where the tip of the rod-shaped member can be engaged, and the tip of the rod-shaped member is engaged with the engaging portion from the base side of the retainer. It is configured so that it can be inserted into the mating surface.

  In the connector according to the present invention, it is preferable that the base of the retainer is formed such that the outer periphery of the retainer has an arc shape.

  In the connector according to the present invention, it is preferable that the top of the outer periphery of the cross section of the base portion of the retainer is formed to be higher than the engaging surface of the engaging portion of the wall portion of the housing.

  In the connector according to the present invention, it is preferable that the width of the base portion of the retainer is formed wider than the width of the arm.

  According to the above invention, the pair of arms of the retainer is inserted into the pair of slits of the housing, and the first tubular body is inserted into the insertion portion of the housing in a state where the engaging projection protrudes to the inner periphery of the insertion portion of the housing. Is inserted into the housing, the annular protrusion of the first tubular body abuts the engaging protrusion of the retainer, opens the arm, gets over the engaging protrusion, enters the back of the housing, and engages with the engaging protrusion. Therefore, the first tubular body and the second tubular body can be connected.

  Then, when it is desired to release the connection between the first tube body and the second tube body, from the base portion side of the retainer, the tip of a rod-like member such as a tool is provided from the convex portion, the concave portion or the through hole provided on the wall portion. In this state, the bar-shaped member is brought into contact with the base of the retainer, and the base of the retainer is pressed against the housing by the bar-shaped member, so that the pair of arms is against the expansion guide wall of the housing. The first tubular body can be pulled out from the housing by releasing the engagement between the engaging protrusion of the retainer and the annular protrusion of the first tubular body.

  As described above, the tip of the rod-like member such as a tool is engaged with the engaging portion provided on the wall portion of the housing, and the base portion of the retainer is simply pressed to connect the first tubular body and the second tubular body. Since the tip of a rod-like member such as a tool can be inserted from various angles even in a narrow space such as an engine room, the connection can be easily released with good workability. Become.

It is a disassembled perspective view which shows one Embodiment of the connector which concerns on this invention. It is the same connector, and is a perspective view in the state where a retainer was removed from a housing. It is a perspective view of the connector. It is a side view of the connector. It is a perspective view of the retainer which comprises the connector. It is sectional drawing of the connector. In the same connector, the operation of the retainer when the first tube is pulled out is shown, (a) is an enlarged explanatory view of the main part before the pulling force acts on the first tube, and (b) is the first tube. It is principal part expansion explanatory drawing when extraction force acts on a body. (A) is a principal part expanded sectional view at the time of cut | disconnecting the connector in the direction orthogonal to an axial direction, (b) is a principal part enlarged side view of the connector. The connector shows a state in which the retainer is pressed against the housing using a rod-shaped member to release the connection between the first tube and the second tube, and (a) shows the connector in the axial direction. The principal part expanded sectional view at the time of cut | disconnecting in the orthogonal direction, (b) is a principal part expanded side view of a connector. It is explanatory drawing which shows other embodiment of the connector which concerns on this invention. It is explanatory drawing which shows other embodiment of the connector which concerns on this invention.

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

  As shown in FIG. 6, the connector 10 connects the first tubular body 1 having an annular protrusion 1 a formed on the outer periphery and the second tubular body 2. In this embodiment, the third tubular body 3 is further attached to the outer periphery of the first tubular body 1, and the third tubular body 3 is connected to the second tubular body 2 via the first tubular body 1. (See FIG. 6).

  Examples of the pipe include hoses, tubes, pipes, and the like used in automobile internal combustion engine systems, brake systems, fuel supply systems such as radiators, and the like. For example, without attaching the third tube 3 to the first tube 1, for example, an annular protrusion is provided on the metal tube, and this is connected to the second tube 2 as the first tube 1. Also good.

  As shown in FIG. 1, the connector 10 of this embodiment has a substantially cylindrical housing 20 provided with a pair of slits 32 and 32. Further, the connector 10 includes a pair of arms 51, 51, a base portion 53, and an engagement protrusion 57 provided on each arm 51, and a retainer that holds the first tubular body 1 against the housing 20. 50.

  As shown in FIGS. 1 and 6, the housing 20 is formed in a substantially cylindrical shape extending at a predetermined length and having both axial ends open, and one end of the housing 20 is used for connecting the second tubular body 2. The connecting portion 21 is formed, and the other end is an insertion portion 22 for inserting the first tubular body 1.

  Further, as shown in FIG. 6, the inside of the housing 20 has a shape that is gradually reduced in diameter from the other end opening side, and a seal ring disposing portion 23 is provided in the back thereof, and the seal ring 25 is provided there. Has been placed. An annular groove 27 is formed midway in the axial direction of the seal ring arrangement portion 23, and an annular protrusion 28 a protruding from the outer periphery of the stopper ring 28 is fitted into the annular groove 27, so that the stopper ring 28 is The seal ring 25 is arranged in a state where it is prevented from coming off.

  As shown in FIGS. 1 and 2, a flat surface 30 a is formed on a part of the peripheral wall 30 on the insertion portion 22 side of the housing 20, and a base 53 of the retainer 50 is disposed on the outer periphery thereof. ing. In addition, a pair of slits 32 and 32 are formed in an arc shape along the circumferential direction in the circumferential wall 30 at opposite locations on both sides of the flat surface 30a in the circumferential direction. The pair of arms 51, 51 of the retainer 50 are inserted.

  As shown in FIG. 4 and FIG. 8A, an expansion guide wall 33 is provided on the peripheral wall 30 at the other circumferential end side of each slit 32, and the base 53 of the retainer 50 is attached to the housing 20. When pressed to the side, the front end surface 57a (see FIG. 5) of the engaging protrusion 57 is pressed against the expanding guide wall 33, thereby opening the pair of arms 51 and 51 to engage. It is a part which cancels | releases engagement with the protrusion 57 and the cyclic | annular protrusion 1a of the 1st pipe body 1 (refer FIG. 9). In addition, a groove portion 34 whose inner surface is tapered is formed on the inner peripheral surface of each slit 32 on the opening side of the insertion portion 22 (see FIGS. 4 and 7).

  1-4, the outer periphery of the housing 20 is positioned adjacent to the base 53 of the retainer 50, that is, the peripheral wall 30 on the insertion portion 22 side, on both sides in the axial direction of the flat surface 30a. A pair of wall portions 35 and 36 are erected at a predetermined height from the opposed positions.

  Of these wall portions 35, 36, a rib-shaped convex portion 37, which is the tip of the wall portion 35 disposed on the opening side of the insertion portion 22, from the arrangement surface side of the retainer 50, is a wall portion. The protrusion 37 and the wall 35 are combined to form an inverted L-shaped eaves shape. A tip 5a of a rod-like member 5 such as a tool is engaged with an engagement surface 37a on the housing side of the convex portion 37 (see FIG. 8A). That is, the convex portion 37 forms an “engagement portion” of the present invention in which the tip of the rod-shaped member is engaged.

  In this embodiment, the convex portion 37 is formed on the wall portion 35 on the insertion portion opening side. However, the convex portion 37 may be provided on the opposite wall portion 36, and both the wall portions 35 and 36 are provided. A convex portion 37 may be provided on the surface. Moreover, although the convex part 37 of this embodiment is protrudingly provided from the front-end | tip of the wall part 35, the structure protruding from the middle of the axial direction of the convex part 37 may be sufficient. Furthermore, the shape of the convex portion 37 is not particularly limited, and may be any shape as long as the tip 5a of the rod-like member 5 can be engaged.

  On the other hand, as shown in FIGS. 1 to 5, the retainer 50 of this embodiment includes a pair of arms 51, 51 inserted into the pair of slits 32, 32 of the housing 20, and the base ends of the arms 51, 51. And a base 53 arranged on the outer periphery of the housing 20 and has a gate shape as a whole.

  As shown in FIGS. 5, 6, and 8, the base portion 53 has a protruding portion 54 having a circular cross-section outer periphery at the upper portion of the portion where the pair of arms 51, 51 are connected. The base 53 is arranged above the flat surface 30a of the peripheral wall 30 of the housing 20 via a predetermined gap (see FIGS. 6 and 8B). The base 53 can be pushed into 20.

  Further, the width of the protruding portion 54 of the base portion 53 is formed wider than the width of the arm 51, and the arcuate outer peripheral surface of the protruding portion 54 has a streak-like non-slip groove along its width direction. 54a is formed.

  Further, as shown in FIGS. 6 and 8A, the height of the portion of the protruding portion 54 of the base portion 53 adjacent to the wall portion 35 provided with the protruding portion 37 is the engaging surface 37a of the protruding portion 37. The top 54b of the protrusion 54 is formed higher than the engagement surface 37a of the projection 37 of the wall 35 (see FIG. 6).

  8A, when the tip 5a of the rod-shaped member 5 is disposed on the top 54b of the protrusion 54 of the base 53, it passes through the space between the protrusion 54 and the wall 35 from the base 53 side. The tip 5a of the rod-like member 5 can be inserted into the engaging surface 37a side of the convex portion 37.

  In this embodiment, the tip 5a of the rod-shaped member 5 is inserted between the base 53 of the retainer 50 and the convex portion 37 of the wall 35. From the direction (direction orthogonal to the axial direction), the tip 5a of the rod-like member 5 may be inserted between the base 53 and the wall 35, and the insertion direction of the tip 5a of the rod-like member 5 is not limited.

  Further, the protruding portion 54 of the base 53 may have, for example, a cross section that is a chevron cross section or a square cross section, and may not be wider than the arm 51, and the tip 5a of the rod-shaped member 5 may be connected to the base 53 side. Therefore, any structure that can be inserted into the engaging surface 37a side of the convex portion 37 may be used.

  On the other hand, the width of each arm 51 is formed to be slightly smaller than the gap of the slit 32 along the axial direction of the housing 20 (see FIG. 8A), and each arm 51 is inserted into each slit 32. In this state, the retainer 50 can be slid along the axial direction of the housing 20 toward the connection portion 21 or the insertion portion 22 (see FIGS. 7A and 7B).

  Projecting pieces 55 that are wider than the width of the arm 51 and wider than the gap of the slit 32 protrude from the tip of each arm 51.

  Further, from the inner side of each arm 51 near the tip, when each arm 51 is inserted into each slit 32 of the housing 20, the arm 51 projects from the slit 32 to the inner periphery of the insertion portion 22 of the housing 20. An engaging protrusion 57 is provided so as to engage with the annular protrusion 1a of the tube body 1 and prevent it from coming off. The front end surface 57a of each engagement protrusion 57 has an inclined shape that gradually decreases from the highest protruding top to the front end side of the arm.

  The pair of arms 51, 51 are inserted into the slits 32, 32 of the housing 20, respectively, and the distal end surfaces 57 a of the respective engaging protrusions 57 are arranged in contact with the expansion guide wall 33. (See FIG. 6). When the base 53 of the retainer 50 is pressed toward the housing 20, the distal end surface 57 a of the engagement protrusion 57 is pressed against the expansion guide wall 33, and the pair of arms 51 and 51 are pressed. It can be spread (see FIG. 9).

  Further, as shown in FIG. 5, ribs 60, 60 whose outer surfaces are tapered are projected from both outer surfaces in the longitudinal direction of each arm 51 in the longitudinal direction. In the state where each arm 52 is inserted into each slit 32, the arm 52 is arranged to face the groove portion 34 formed in the slit 32 (see FIG. 7A). In this state, when a force for pulling out the first tubular body 1 from the insertion portion 22 of the housing 20 is applied, the rib 60 is inserted into the groove portion 34 and urges the pair of arms 51 and 51 toward each other. (See FIG. 7B).

  Next, an example of a method for using the connector 10 having the above configuration will be described.

First, after inserting the seal ring 25 from the opening of the insertion portion 22 of the housing 20 and disposing it in the seal ring disposing portion 23, the stopper ring 28 is inserted and the annular protrusion 28 a is engaged with the annular groove 27. The seal ring 25 is retained and retained (see FIG. 6).
Then, as shown in FIGS. 2 and 4, the pair of arms 51, 51 of the retainer 50 are inserted into the pair of slits 32, 32 of the housing 20. The retainer 50 can be attached to the housing 20 by projecting 57 to the inner periphery of the insertion portion 22 (see FIGS. 3 and 6). In this state, the base 53 of the retainer 50 is disposed above the flat surface 30a of the peripheral wall 30 of the housing 20 with a predetermined gap (see FIG. 6).

  When the first tubular body 1 is inserted into the insertion portion 22 of the housing 20 in the above state, the arms 51 and 51 of the retainer 50 are pushed in while being deformed by the annular protrusion 1a of the first tubular body 1, When the annular protrusion 1a of the first tubular body 1 gets over the engaging protrusions 57 of the retainer 50 and comes out to the back side, the pair of arms 51 and 51 are elastically restored, and the annular protrusion of the first tubular body 1 is restored. Each engagement protrusion 57 is engaged with 1a, and the first tubular body 1 is connected to the housing 20 in a state in which the first tubular body 1 is prevented from coming off (see FIG. 6). At the same time, the tip of the first tube 1 is inserted into the inner periphery of the seal ring 25, and the outer periphery of the tip of the first tube 1 and the inner periphery of the housing 20 are sealed by the seal ring 25.

  As described above, after the retainer 50 is mounted on the housing 20, the second tube 2, the first tube 1, and the first tube 1 can be simply inserted by inserting the first tube 1 into the insertion portion 22 of the housing 20. It is possible to connect the third tubular body 3 connected to the one-touch via the connector 10.

  In this state, as shown in FIG. 7A, when a pulling force (see arrow F <b> 1) acts on the first tubular body 1, the taper surface of the rib 60 of each arm 51 becomes the taper of the groove 34 of each slit 32. Abutting on the surface, the pair of arms 51 and 51 are urged toward each other as indicated by an arrow F2 in FIG. As a result, the arms 51, 51 are prevented from opening, and the engagement margin between the annular protrusion 1a of the first tubular body 1 and the engagement protrusion 57 of each arm 51 is increased, so that the insertion portion of the housing 20 is inserted. Thus, it is possible to reliably prevent the first tubular body 1 from coming out of 22 and to increase the connection strength between the first tubular body 1 and the connector 10.

  When it is desired to remove the first tubular body 1 and the third tubular body 3 connected thereto from the connector 10 to which the second tubular body 2 is connected for reasons such as maintenance, for example, FIG. ), The tip 5a of the rod-shaped member 5 is disposed obliquely on the top 54b of the protrusion 54 of the base 53. Then, the tip 5a of the rod-shaped member 5 passes between the protrusion 54 of the base 53 of the retainer 50 and the protrusion 37 of the wall 35 of the housing 20, and is inserted into the engagement surface 37a side of the protrusion 37. Then, it engages with the engagement surface 37a (see FIG. 8A).

  As a result, the base 53 of the retainer 50 is pressed toward the flat surface 30 a side of the housing 20 by the tip 5 a of the rod-like member 5, and the tip surface 57 a of the engagement protrusion 57 of each arm 51 is Each expansion guide wall 33 is pressed against each other. As a result, the pair of arms 51, 51 are expanded (see FIGS. 9A and 9B), and the engagement between the annular protrusion 1 a of the first tubular body 1 and the engagement protrusion 57 of the retainer 50 is performed. Is released, and the first tubular body 1 and the second tubular body 2 can be removed by pulling out the first tubular body 1 from the insertion portion 22 of the housing 20 in this state.

  As described above, in the connector 10, the wall 35 of the housing 20 is provided with the protrusion 37 for engaging the tip 5 a of the rod-like member 5, and the protrusion of the protrusion 54 of the base 53 of the retainer 50. Since the height of the portion adjacent to the wall portion 35 provided with 37 is formed lower than the engaging surface 37a of the convex portion 37, the tip 5a of the rod-shaped member 5 is engaged with the engaging surface 37a of the convex portion 37. The connection between the first tubular body 1 and the second tubular body 2 can be released by a simple operation of pressing the base portion 53 of the retainer 50 toward the housing 20 side.

  Therefore, even when the first tube 1 and the second tube 2 and the connector 10 for connecting them are arranged in a narrow space such as an engine room, the tip 5a of the rod-like member 5 is inserted from various angles. It is possible to improve the workability of the connection release work between the first tube body 1 and the second tube body 2.

  Further, in this embodiment, since the outer circumference of the projecting portion 54 of the base portion 53 of the retainer 50 has an arc shape, the rod-shaped member 5 is interposed between the wall portion 35 of the housing 20 and the base portion 53 of the retainer 50. It becomes easy to insert the tip 5a of the rod-like member 5 and the tip 53a of the rod-like member 5 makes it easy to push the base 53, thereby further improving the workability of releasing the connection between the first tube body 1 and the second tube body 2. it can.

  Further, in this embodiment, the top 54 b of the outer periphery of the cross section of the protrusion 54 of the base 53 of the retainer 50 is formed to be higher than the engagement surface 37 a of the convex portion 37 of the wall portion 35 of the housing 20. (See FIG. 6), the tip 5a of the rod-like member 5 is inserted between the wall portion 35 of the housing 20 and the base portion 53 of the retainer 50, and is engaged with the engaging surface 37a of the convex portion 37. Sometimes, the base 53 is more easily pushed by the tip 5a of the rod-like member 5, and the workability of releasing the connection between the first tubular body 1 and the second tubular body 2 can be further improved.

  Further, in this embodiment, since the width of the protruding portion 54 of the base 53 of the retainer 50 is formed wider than the width of the arm 51, the retainer 50 is rattled when the retainer 50 is attached to the housing 20. It can be made difficult, and it becomes easy to push the base 53 of the retainer 50 with the rod-shaped member 5, and it is also easy to push the base 53 of the retainer 50 directly with the operator's finger or the like.

  FIG. 10 shows 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.

  The connector 10a of this embodiment is different from that of the above-described embodiment in that the wall portion 35 of the housing 20 is engaged with the tip 5a of the rod-like member 5. That is, the wall 35 is disposed on the opening side of the insertion portion 22 of the housing 20, and the U-shaped recess 38 is formed on the arrangement surface side of the retainer 50 over the entire length of the wall 35 in the width direction. The upper surface (surface away from the housing 20) of the recess 38 is formed as an engagement surface 38a with which the tip 5a of the rod-like member 5 is engaged. That is, the concave portion 38 forms an “engagement portion” of the present invention in which the tip of the rod-shaped member is engaged.

  When the distal end 5 a of the rod-shaped member 5 is disposed obliquely on the top 54 b of the protruding portion 54 of the base 53 of the retainer 50, the distal end 5 a of the rod-shaped member 5 becomes the concave portion 38 of the base 53 of the retainer 50 and the wall portion 35. Is inserted into the recess 38 and engages with the engagement surface 38a (see FIG. 10), whereby the base 53 of the retainer 50 is pressed toward the flat surface 30a side of the housing 20. The pair of arms 51, 51 are spread out, and the engagement between the annular protrusion 1a of the first tubular body 1 and the engagement protrusion 57 of the retainer 50 is released. By pulling out one tubular body 1, the first tubular body 1 and the second tubular body 2 can be detached.

  FIG. 11 shows still 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.

  The connector 10b of this embodiment is different from the above-described embodiment in that the wall portion 35 of the housing 20 is engaged with the tip 5a of the rod-like member 5. That is, a through hole 39 is formed in the wall portion 35 disposed on the opening side of the insertion portion 22 of the housing 20, and the upper surface (surface away from the housing 20) of the through hole 39 is the tip of the rod-shaped member 5. An engagement surface 39a with which 5a is engaged is formed. That is, the through hole 39 forms an “engagement portion” of the present invention with which the tip of the rod-shaped member is engaged.

  Further, the through hole 39 is formed in a tapered shape so that the opening width on the retainer 50 side is wide and gradually becomes narrower toward the opening on the opposite side (see FIG. 11). The opening width is formed narrower than the tip 5 a of the rod-like member 5. Therefore, when the tip 5a of the rod-like member 5 is inserted into the through hole 39, the tip 5a of the rod-like member 5 is guided by the tapered through-hole 39 and naturally engages with the engagement surface 39a. Yes.

  When the tip 5a of the rod-shaped member 5 is disposed obliquely on the top 54b of the protruding portion 54 of the base portion 53 of the retainer 50, the tip 5a of the rod-shaped member 5 is inserted into the through hole 39 and engaged while being guided. It engages with the surface 39a (see FIG. 11), whereby the base 53 of the retainer 50 is pressed toward the flat surface 30a side of the housing 20, and the pair of arms 51, 51 are expanded, and the first tube 1 The engagement between the annular protrusion 1a and the engagement protrusion 57 of the retainer 50 is released, and in this state, the first tube 1 is pulled out from the insertion portion 22 of the housing 20, whereby the first tube 1 and the second The tube body 2 can be removed.

DESCRIPTION OF SYMBOLS 1 1st pipe body 1a Annular protrusion 2 2nd pipe body 5 Rod-like member 5a Tip 10, 10a, 10b Connector 20 Housing 21 Connection part 22 Insertion part 30 Perimeter wall 32 Slit 33 Expanding guide wall 34 Groove part 35, 36 Wall part 37 Projection 37a Engagement surface 38 Recess 38a Engagement surface 39 Through-hole 39a Engagement surface 50 Retainer 51 Arm 53 Base 53b Top 57 Engagement

Claims (4)

A connector for connecting the first tubular body having an annular protrusion formed on the outer periphery and the second tubular body,
It is formed in a cylindrical shape, one end of which forms a connecting portion for connecting the second tubular body, and the other end forms an insertion portion for the first tubular body. A housing provided with a pair of slits;
A pair of arms inserted into the slit, a base portion connected to the pair of arms and disposed on an outer periphery of the housing, and an engaging protrusion projecting on the inner side of each arm; A protrusion protruding from the front slit to the inner periphery of the insertion portion of the housing, and a retainer that engages with the annular protrusion of the first tubular body to prevent it from coming off,
The housing is provided with a widening guide wall that opens the pair of arms and releases the engagement between the engagement protrusion and the annular protrusion by pressing the base of the retainer toward the housing. And
A wall portion is erected from a position adjacent to the base portion of the retainer on the outer periphery of the housing, and a convex portion, a concave portion, or a through hole in which a tip of a rod-like member such as a tool can be engaged on the retainer side of the wall portion An engaging portion is formed,
The height of the portion of the retainer adjacent to the wall portion is lower than the surface of the engagement portion where the tip of the rod-like member can be engaged, and the tip of the rod-like member extends from the base side of the retainer. A connector configured to be inserted into an engagement surface side of the engagement portion.   The connector according to claim 1, wherein a base portion of the retainer is formed such that an outer periphery of a cross section forms an arc shape.   The connector according to claim 2, wherein the top of the outer periphery of the cross section of the retainer base is formed to be higher than the engaging surface of the engaging portion of the wall portion of the housing.   The connector according to any one of claims 1 to 3, wherein a width of a base portion of the retainer is formed wider than a width of the arm.