JP2015224687A - connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector capable of keeping a connection state of tubes when pull-out force is acted on one of the tubes in a direction to separate from the other tube.SOLUTION: A connector 10 has a housing 20 and a retainer 40, a pair of opening portions 29, 29 are formed on the housing 20, and the retainer 40 has an engagement portion 41 having a long axis and a short axis, and a pair of operating portions 45, 45. The operating portions 45 have stopper portions 47, tapered faces 47a, 31 are formed on the stopper portions 47 and edge portions of the opening portions 29, so that the stopper portions 47 are brought into contact with the edge portions of the opening portions 29, and run on the edge portions of the opening portions 29 through the tapered faces 47a, 31, and the pair of operating portions 45, 45 are moved in an outer diameter direction of the housing, when the pull-out force acts on a first tube 1.

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.

  For example, in Patent Document 1 listed below, a quick cup for connecting a first tubular body having an annular holding rib to a casing to which a second tubular body is connected is described as one in which such tubular bodies can be freely detached. The ring is described. A holding element having a holding edge that engages with the holding rib is attached to the casing, and the first tubular body is inserted into the casing, and the holding rib engages with the holding edge of the holding element. Thus, the second tubular body is connected to the casing.

  Moreover, the said casing is a wall part by the side of the opening part by the side of the 1st pipe body insertion, Comprising: The window-shaped opening part is formed in the location which opposes the circumferential direction. Furthermore, the holding element includes a pair of supports provided with the holding edge inside, a spring web extending in a V shape from the end of each support, and a pressing plate coupled to the end of each spring web The holding element is mounted on the casing in a state where the pair of pressing plates are disposed in the pair of openings of the casing.

  And when releasing the connection between the first tubular body and the second tubular body, the spring web is bent and deformed in the direction in which the retaining edge portions are separated from each other by pushing the pair of pressing plates of the holding element together. The engagement with the holding rib of the second tubular body is released, the first tubular body can be pulled out from the casing, and the connection between the first tubular body and the second tubular body can be released.

JP-T-2002-515577

  In the quick coupling of Patent Document 1, when a pulling force is applied to any of the pipes, the holding edge of the holding element is pushed by the holding rib of the first pipe, and the pulling force is also applied to the holding element. In effect, the pressing plate of the holding element, which is arranged in the opening of the casing, abuts the edge of the opening and provides a pulling drag.

  However, in the quick coupling of Patent Document 1, since the pressing plate can move inward even in the above state, there is a possibility that the engagement is disengaged when the pressing plate is pressed inward by some external force. .

  Therefore, the object of the present invention is to maintain the connection state between the tubular bodies without pushing the operation portion of the retainer when a pulling force acts on the one tubular body in a direction away from the other tubular body. May provide connectors.

In order to achieve the above object, the present invention is a connector for connecting a second tubular body to a first tubular body having a flange formed on the outer periphery thereof,
One end forms a connecting portion for connecting the second tubular body, and the other end inner circumference forms an insertion portion of the first tubular body, and the first tubular body is attached to the housing. A retainer for retaining the retainer,
When a pulling force is applied to the peripheral wall of the housing, the housing engages with the retainer and restricts movement of the retainer beyond a predetermined distance in the other end direction of the housing. 1 lock part and a second lock part for restricting the deformation and movement of the retainer radially inward of the first tubular body are formed,
The retainer is provided with an engaging portion that engages with a flange portion of the first tubular body to prevent the first tubular body from being detached, and is movable in a radial direction of the first tubular body, and is radially inward. When the pulling force is applied to the first tubular body, the operating portion for releasing the engagement of the engaging portion by moving to the position moves within the range of the predetermined distance, and the second locking portion and the A connector having a stopper portion that restricts the movement of the operation portion inward in the radial direction by opposing the radial direction of the first tubular body is provided.

  In the connector of the present invention, an opening is formed in the peripheral wall of the insertion portion of the housing, and an edge of the opening on the other end side of the housing forms the first lock portion, The second lock part is provided on the outer peripheral surface of the peripheral wall on the other end side than the edge part, the operation part is arranged to be movable by a predetermined distance in the axial direction of the housing in the opening part, and the stopper part is It is preferable that the housing is formed so as to extend from the operation portion to the other end side of the housing and to have a distal end located on the outer diameter side of the edge portion.

In the connector according to the present invention, the engaging portion of the retainer has a deformed annular shape having a long axis and a short axis, and the operation portion is a pair of members connected to both ends of the engaging portion in the long axis direction. The inner diameter of the engagement portion in the minor axis direction is normally smaller than the outer diameter of the flange portion of the first tubular body, and when the pair of operation portions are pressed in directions close to each other, the first It is configured to be larger than the outer diameter of the flange portion of the tubular body, and to disengage the engagement portion.
A taper surface is formed on at least one of the stopper portion and the second lock portion, and when a pulling force acts on the first tubular body, the taper surface It is preferable that the stopper portion is configured to move outward in the radial direction of the first tubular body.

  In the connector of the present invention, at least one groove portion is formed along the axial direction from the opening-side end surface of the insertion portion on the inner periphery of the insertion portion of the housing, and on the short axis side of the annular portion of the retainer. It is preferable that at least one protrusion inserted into the groove is formed.

  In the connector of the present invention, it is preferable that both end portions on the long axis side of the annular portion of the retainer are V-shaped, and the operation portion is connected to the end portions.

  According to the above invention, in a state where the retainer is mounted on the housing, the first tubular body is inserted into the inner periphery of the insertion portion of the operation portion housing, and the engaging portion of the retainer is engaged with the flange portion of the first tubular body. Thus, the first tubular body and the second tubular body can be connected. Further, by pressing the retainer operating portion radially inward of the first tubular body, the engagement between the retainer engaging portion and the flange portion of the first tubular body is released, so that the first from the housing. One tube can be pulled out.

  When a pulling force is applied to the first tubular body in a state where the first tubular body and the second tubular body are connected, the stopper portion of the operation portion of the retainer is engaged with the second lock portion of the housing. The operation part cannot be pushed, and the first tube body can be reliably prevented from being inadvertently pulled out from the housing.

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 retainer which comprises the connector. FIG. 3 is a perspective view of the connector with a retainer mounted on a housing. It is a principal part cross-sectional perspective view of the connector. In the connector, it is a perspective view in the state where the 1st tube was connected to the insertion part of the housing. It is a section explanatory view in the state where the 1st tube and the 2nd tube were connected by the connector. The state which connected the 1st pipe body and the 2nd pipe body with the connector is shown, (a) is the sectional view, and (b) is a sectional view in the AA arrow line of (a). . In the same connector, the state at the time of releasing connection between the first tube body and the second tube body is shown, (a) is a cross-sectional view thereof, and (b) is along the BB arrow line of (a). It is sectional drawing. In the same connector, a state when a pulling force is applied to the first tubular body is shown, (a) is a cross-sectional view thereof, and (b) is a cross-sectional view taken along a CC arrow line of (a).

  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 flange 1 a formed on the outer periphery thereof and the second tubular body 2. In this embodiment, the third tubular body 3 is further connected to the outer periphery of the first tubular body 1 (see FIG. 6).

  Examples of the pipe connected through the connector 10 include hoses, tubes, pipes, and the like used in an internal combustion engine system of an automobile, a brake system, a fuel supply system such as a radiator, and the like. The tube may be used.

  As shown in FIG. 1, the connector 10 of this embodiment includes a cylindrical housing 20 and a retainer 40 that is attached to the housing 20 and holds the first tubular body 1.

  As shown in FIGS. 1, 4, and 6, the housing 20 is formed in a substantially cylindrical shape that extends at a predetermined length and is open at both ends in the axial direction, and one end thereof connects the second tubular body 2. The other end is an insertion portion 23 for inserting the first tubular body 1.

  As shown in FIGS. 4 and 6, the inside of the housing 20 has a shape that is gradually reduced in diameter from the opening side of the insertion portion 23, and a ring placement portion 25 is formed at the back of the housing 20. An annular groove 27 is formed in the middle of the portion 25 in the axial direction. A seal ring 50 is disposed at the back of the ring arrangement portion 25, and a stopper ring 60 is disposed at a portion closer to the opening of the insertion portion than the seal ring 50, and an annular protrusion 60a protruding from the outer periphery thereof. Is fitted into the annular groove 27, and the stopper ring 60 is positioned and held so that the seal ring 50 is prevented from coming off.

  Further, openings 29 and 29 each having a rectangular long hole shape extending along the circumferential direction are formed on the circumferential wall on the insertion portion 23 side of the housing 20 at positions facing the circumferential direction (see FIG. 1, see FIGS. 3 and 4). As shown in FIGS. 3 and 4, the pair of operation portions 45, 45 of the retainer 40 are arranged in the pair of openings 29, 29. The shape of the opening 29 may be a square shape or the like, and can be changed as appropriate in accordance with the shape or the like of the operation portion 45 of the retainer 40.

  Further, as shown in FIG. 4 and FIGS. 7 to 9, each opening 29 is on the opening side of the insertion portion 23 (shown in the drawing direction of the first tubular body 1 as indicated by the arrow in FIG. 7A). The outer peripheral edge of the housing includes a first lock portion 31a that restricts the movement of the retainer 40 and a tapered surface that gradually increases in height toward the opening side of the insertion portion 23. And a second lock portion 31b that restricts the bending in the direction.

  Further, at the inner periphery of the peripheral wall on the insertion portion 23 side of the housing 20 and at a position orthogonal to the pair of openings 29, 29, from the opening side end surface of the insertion portion 23 along the axial direction of the housing 20. The pair of groove portions 33, 33 are formed with a predetermined length. Each groove portion 33 has a concave shape in which the inner space side of the housing 20 and the opening side of the insertion portion 23 are opened. A pair of convex portions 49 and 49 (see FIG. 2) of the retainer 40 are inserted into the pair of groove portions 33 and 33 (see FIGS. 4 and 7B). Note that at least one groove 33 is sufficient.

  As shown in FIG. 2, the retainer 40 mounted on the housing 20 having the above-described shape has an engaging portion 41 having a deformed annular shape having a major axis A and a minor axis B.

  The engaging portion 41 in this embodiment has a shape in which an intermediate portion is bent in an arc shape, and a pair of bending pieces 43 and 43 extending so that both end portions are substantially linear, with the bent portions facing outward. While facing each other and connecting both linear ends of each bending piece 43, a deformed ring having a long axis A and a short axis B shorter than the long axis A is formed.

  As shown in FIG. 7 (b), both ends of the engaging portion 41 on the long axis A side are V-shaped by connecting the base ends of a pair of linear portions. In addition, an inclined surface 43a is formed on the inner peripheral edge of the engaging portion 41 on the opening side of the insertion portion 23 of the housing 20 (see FIG. 2), and the first tubular body 1, the second tubular body 2, and the like. Is easily inserted when the first tubular body 1 is inserted into the engaging portion 41 of the retainer 40 attached to the housing 20 and is engaged by the flange portion 1a of the first tubular body 1. It is easy to spread the portion 41.

  Operation portions 45 and 45 are connected to opposing portions of the engaging portion 41 on the long axis A side. Each operation portion 45 has a substantially long plate shape corresponding to the shape of the opening 29 of the housing 20 and extends long in the minor axis B direction of the engagement portion 41.

  Further, as shown in FIG. 7A, the length L of each operating portion 45 along the axial direction of the engaging portion 41 is along the axial direction of the housing 20 of each opening 29 of the housing 20. The pair of operation portions 45 and 45 are arranged so as to be slidable by a predetermined distance in the axial direction of the housing 20 in the pair of openings 29 and 29. Yes.

  The engaging portion 41 is always (in a state where no external force is applied), as shown in FIGS. 2 and 7B, the inner diameter in the minor axis B direction is the flange portion of the first tubular body 1. The outer diameter of the first tubular body 1 is smaller than the outer diameter of the first tubular body 1 and can be engaged with the flange portion 1a. As shown in FIG. When the long axis A side is pressed, the diameter of the first tubular body 1 is increased to a size allowing the flange 1a to pass therethrough, and the engagement between the flange 1a and the engaging portion 41 is achieved. It can be canceled. In the case of this embodiment, in the state shown in FIG. 7, the flange portion 1 a of the first tubular body 1 is not engaged with the engaging portion 41, but when a pulling force is applied to the first tubular body 1. The flange portion 1a is engaged with the engaging portion 41.

  Moreover, the form of the engaging part 41 may be, for example, a rhombus or an ellipse, and has a deformed ring shape having a long axis A and a short axis B, and is normally engaged with the flange part 1a of the first tubular body 1. When the operation portion is pressed, the flange portion 1a can pass therethrough, and the engagement between the flange portion 1a and the engaging portion 41 can be released. The shape of the operation unit 45 is not particularly limited, and may be, for example, a square shape. The operation unit 45 may be slidable by a predetermined distance within the opening 29 of the housing 20, and the first tube body 1 and the second tube body 2. What is necessary is just to be able to press at the time of connection cancellation | release and to be able to deform | transform the said engaging part 41 as mentioned above.

  Furthermore, from the portion of each operation portion 45 that is disposed opposite to the lock portion 31 of the opening portion 29 of the housing 20, the opening portion 23 side of the insertion portion 23 of the housing 20 (the pulling direction side of the first tubular body 1). An extended stopper portion 47 is provided. On the inner peripheral side of the stopper portion 47, a tapered surface 47a whose height gradually decreases toward the tip in the extending direction is formed (see FIGS. 2 and 4).

  And in the connector 10 of this embodiment, the 1st pipe body 1 is inserted in the insertion part 23 of the housing 20, and the flange part 1a engages with the engaging part 41 of the retainer 40 (refer FIG. 7). 7, when the pulling force indicated by the arrow in FIG. 7 acts on the first tubular body 1, the second locking portion in which the tapered surface 47 a of each stopper portion 47 of the retainer 40 forms the tapered surface of each opening 29 of the housing 20. The stopper portions 47 and 47 ride on the second lock portion 31b of the opening 29 through the tapered surface 47a and the second lock portion 31b, respectively, and the pair of operation portions 45 and 45 It is comprised so that it may move to the outer-diameter direction of the housing 20 (refer FIG. 9). As a result, the pair of operation portions 45, 45 cannot be pushed in the direction approaching each other, and the engagement portion 41 cannot be increased in diameter. Further, in this state, the retainer 40 abuts on the first lock portion 31a of the opening portion 29 and cannot move to the opening side of the insertion portion 23, so that the first tubular body 1 is prevented from moving in the drawing direction. be able to.

  In this embodiment, the second lock portion 31b having a tapered surface is formed in the opening 29 of the housing 20, and the tapered surface 47a is also formed in the stopper portion 47 of the retainer 40. However, only one of them is formed. A tapered surface may be provided, and when a pulling force is applied to the first tubular body 1, the stopper portion 47 abuts on the edge of the opening 29, and the edge of the opening 29 is interposed through one of the tapered surfaces. As long as the pair of operation portions 45, 45 are moved in the outer diameter direction of the housing, it is sufficient.

  In addition, a pair of convex portions 49, 49 are provided on the short axis B side of the engaging portion 41 so as to be inserted into the groove portions 33, 33 of the housing 20 and serve as a guide when the retainer 40 is rotated and slid. (See FIG. 2). In this embodiment, the convex portions 49, 49 are arranged in the width direction of the flexible piece 43 from the center of the outer peripheral surface of the pair of flexible pieces 43, 43 constituting the engaging portion 41 to a position orthogonal to the pair of operating portions 45, 45. Each of them is provided with a protrusion. In this embodiment, a pair of convex portions 49, 49 are provided corresponding to the pair of groove portions 33, 33 of the housing 20, but at least one convex portion 49 may be provided.

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

  First, after the seal ring 50 is inserted from the opening of the insertion portion 23 of the housing 20 and disposed in the ring placement portion 25, the stopper ring 60 is inserted, and the annular protrusion 60a is engaged with the annular groove 27. The seal ring 50 is retained to prevent it from coming off (see FIGS. 4 and 6).

  Next, the bending pieces 43 and 43 of the engaging portion 41 of the retainer 40 are pressed toward each other toward the inner diameter direction of the short axis B, so that the engaging portion 41 is bent and deformed into an elongated ring shape. While maintaining this state, one operating portion 45 is inserted from one opening 29 of the housing 20, while passing through the inside of the housing and inserted from the other opening 29. Then, a pair of operation portions 45, 45 are disposed in the pair of openings 29, 29, the engaging portion 41 is elastically restored, and the pair of convex portions 49, 49 are the pair of groove portions 33 of the housing 20. 33, the retainer 40 can be mounted on the housing 20 in a state in which the retainer 40 is prevented from rotating and is prevented from being detached by the operation portion 45 disposed in the opening 29 (see FIG. 3 and FIG. 4). In this state, the tapered surface 47a of the stopper portion 47 of the operation portion 45 of the retainer 40 is disposed at a position facing the second lock portion 31b forming the tapered surface of the opening 29 of the housing 20 (see FIG. 4 and FIG. 4). FIG. 7 (a)).

  Thus, in this embodiment, since the convex portion 49 of the retainer 40 is inserted into the groove portion 33 of the housing 20 in a state where the retainer 40 is mounted on the housing 20, The movement of the housing 20 along the axial direction is allowed, and the retainer 40 can be prevented from rotating with respect to the housing 20. Moreover, since the groove part 33 is formed from the opening side end surface of the insertion part 23 of the housing 20, the groove part 33 can be shape | molded by the type | mold structure which slides along the axial direction of the housing 20, and die cutting is possible. However, the structure can be made easy.

  As described above, the first tubular body 1 is inserted into the insertion portion 23 of the housing 20 with the retainer 40 mounted on the housing 20. Then, the flange portion 1a of the first tubular body 1 abuts on the inclined surface 43a of the engaging portion 41 of the retainer 40, and the engaging portion 41 is pushed so that the short axis B side of the engaging portion 41 expands in diameter. When the flange portion 1a of the first tubular body 1 gets over the engaging portion 41 and comes out to the back side, the engaging portion 41 is elastically restored and the flange portion 1a of the first tubular body 1 is inserted. (See FIGS. 6 and 7). At the same time, the tip of the first tube 1 is inserted into the inner periphery of the seal ring 50, 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 50 (FIG. 7 ( a)).

  As described above, in this connector 10, after the retainer 40 is mounted on the housing 20, the first tube 1 is inserted into the insertion portion 23 of the housing 20 and pushed in, so that the second tube 2 The first tubular body 1 and the third tubular body 3 connected to the first tubular body 1 can be connected with one touch via the connector 10 (see FIGS. 5 to 7). Even if a pulling force is applied to the first tubular body 1 in this state, the flange portion 1a engages with the back side (the side opposite to the tapered surface 47a) of the engaging portion 41 of the retainer 40. The first tubular body 1 can be prevented from slipping out of the portion 23, and the connection state between the first tubular body 1 and the second tubular body 2 can be maintained.

  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, a pair of operations of the retainer 40 is performed. The parts 45 and 45 are pressed in the directions close to each other (see the arrow in FIG. 8A). Then, since the long axis A side of the engaging portion 41 is pushed, as shown in FIG. 8B, the diameter of the engaging portion 41 is increased so as to form an annular shape along the inner peripheral shape of the housing 20, The engageable state between the engagement portion 41 and the flange portion 1a is released, and the flange portion 1a of the first tubular body 1 has a size that can pass through. In this state, the first tubular body 1 and the second tubular body 2 can be detached by pulling out the first tubular body 1 from the insertion portion 23 of the housing 20.

  Moreover, in this embodiment, since the both ends by the side of the long axis A of the engaging part 41 of the retainer 40 are V-shaped, the connection between the first tubular body 1 and the second tubular body 2 is released. Therefore, when the pair of operation portions 45, 45 are pressed in the direction in which they are close to each other, the pressing force can be efficiently applied to smoothly increase the diameter of the engaging portion 41.

  In this connector 10, as shown in FIG. 7, the first tube 1 is inserted into the insertion portion 23 of the housing 20, and the flange portion 1 a is engageable with the engagement portion 41 of the retainer 40. When the pulling force indicated by the arrow in FIG. 7A acts on the first tubular body 1, the following operation is performed.

  That is, the retainer 40 is pushed by the flange portion 1a of the first tubular body 1 engaged with the back side of the engaging portion 41, and the pair of operation portions 45 and 45 are inserted into the insertion portions 23 in the openings 29 and 29, respectively. The tapered surfaces 47a of the stopper portions 47 of the retainer 40 abut against the second lock portions 31b forming the tapered surfaces of the openings 29 of the housing 20, and the tapered surfaces 47a, 2 As shown in FIG. 9 (a), the stopper portions 47 and 47 ride on the second lock portion 31 b of the opening 29 via the lock portion 31 b, and the pair of operation portions 45 and 45 are located outside the housing 20. Move in the radial direction.

  Therefore, in this state, the pair of operating portions 45, 45 of the retainer 40 cannot be pushed in the direction approaching each other, and the engaging portion 41 cannot be increased in diameter, so that the engaging portion 41 of the retainer 40 is not engaged. It is possible to reliably prevent the first tubular body 1 from being pulled out of the insertion portion 23 of the housing 20 by expanding the diameter.

  Further, as described above, the stopper portions 47, 47 of the retainer 40 ride on the tapered surfaces 47a, 47a provided at the edges of the openings 29, 29 of the housing 20, so that the pair of operation portions 45, 45 are Since the housing 20 moves in the outer diameter direction, the engaging portion 41 of the retainer 40 is pulled toward the long axis A as shown in FIG. 1 is engaged with the flange portion 1a so as to sandwich the first tube body 1, the first tubular body 1 can be firmly held.

  The retainer 40 abuts on the first lock portion 31a of the opening 29 and can no longer move to the opening side of the insertion portion 23, so that the first tubular body 1 is prevented from moving in the drawing direction. Can do.

  In the above embodiment, as the retainer 40, the retainer 40 having the engaging portion 41 having a deformed annular shape having the major axis and the minor axis is employed. However, the present invention is a so-called gate-type retainer (a U-shaped retainer). None, it can be applied to a structure having a retainer) in which the arm portions on both sides are inserted into the slits formed on both sides of the housing so as to be engaged with the flange portion 1a of the first tubular body 1. .

DESCRIPTION OF SYMBOLS 1 1st pipe body 1a Flange part 2 2nd pipe body 3 3rd pipe body 10 Connector 20 Housing 21 Connection part 23 Insertion part 29 Opening part 31a 1st lock part 31b 2nd lock part 33 Groove part 40 Retainer 41 Engagement part 45 Operation part 47 Stopper part 47a Tapered surface 49 Convex part 50 Seal ring 60 Stopper ring

Claims (5)

A connector for connecting a second tubular body to a first tubular body having a flange formed on the outer periphery,
One end forms a connecting portion for connecting the second tubular body, and the other end inner circumference forms an insertion portion of the first tubular body, and the first tubular body is attached to the housing. A retainer for retaining the retainer,
When a pulling force is applied to the peripheral wall of the housing, the housing engages with the retainer and restricts movement of the retainer beyond a predetermined distance in the other end direction of the housing. 1 lock part and a second lock part for restricting the deformation and movement of the retainer radially inward of the first tubular body are formed,
The retainer is provided with an engaging portion that engages with a flange portion of the first tubular body to prevent the first tubular body from being detached, and is movable in a radial direction of the first tubular body, and is radially inward. When the pulling force is applied to the first tubular body, the operating portion for releasing the engagement of the engaging portion by moving to the position moves within the range of the predetermined distance, and the second locking portion and the A connector comprising: a stopper portion that restricts the movement of the operation portion inward in the radial direction by opposing the radial direction of the first tubular body.   An opening is formed in the peripheral wall of the insertion portion of the housing, and an edge of the opening on the other end side of the housing forms the first lock portion, and the other end side of the edge. The second lock portion is provided on the outer peripheral surface of the peripheral wall, the operation portion is disposed so as to be movable by a predetermined distance in the axial direction of the housing within the opening, and the stopper portion is disposed from the operation portion to the housing. The connector according to claim 1, wherein the connector is formed so as to extend to the other end side and to be positioned on the outer diameter side of the edge portion. The engaging portion of the retainer has a deformed annular shape having a major axis and a minor axis, and the operation portion is composed of a pair of both ends connected to both ends in the major axis direction of the engaging portion. The inner diameter in the minor axis direction of the first tubular body is normally smaller than the outer diameter of the flange portion of the first tubular body. It is configured to be larger than the diameter and to disengage the engagement portion.
A taper surface is formed on at least one of the stopper portion and the second lock portion, and when a pulling force acts on the first tubular body, the taper surface The connector according to claim 2, wherein the stopper portion is configured to move outward in the radial direction of the first tubular body. At least one groove portion is formed along the axial direction from the opening side end face of the insertion portion on the inner periphery of the insertion portion of the housing,
The connector according to claim 3, wherein at least one convex portion to be inserted into the groove portion is formed on the short axis side of the engaging portion having a deformed annular shape of the retainer.   5. The connector according to claim 3, wherein both end portions on the long axis side of the engaging portion having a deformed annular shape of the retainer are V-shaped, and the operation portion is connected to the end portion thereof.