WO2011108728A1

WO2011108728A1 - Connector

Info

Publication number: WO2011108728A1
Application number: PCT/JP2011/055141
Authority: WO
Inventors: 剛岡崎
Original assignee: 株式会社ニフコ
Priority date: 2010-03-04
Filing date: 2011-03-04
Publication date: 2011-09-09
Also published as: JP2011185309A; KR20120120390A; KR101421858B1; JP5518529B2; CN102782386B; CN102782386A

Abstract

In the disclosed connector, by both engagement sections (18D) of a wire (18) moving along the oblique section (50B) of a slit (50) from a locking section (50C) to a lock section (50A) or the vicinity of the lock section (50A), a ring (16) moves along the axial direction of a pipe insertion section (14A) from a standby position to a lock-completion position, and the lock sections (18A) of the wire (18) approach each other, the lock sections (18A) of the wire (18) switching to a locked state that regulates motion in the direction of dislocation of the flange section (12A) of a pipe (12). In this way, by the ring (16) provided to the outer periphery of the pipe insertion section (14A) of a housing (14) moving in the axial direction of the pipe insertion section (14A), the ring (16) can be in a standby position and a lock-completion position, and when the ring (16) is put in the standby position, the connector (10) does not enlarge in the radial direction.

Description

connector

The present invention relates to a connector for connecting pipes.

2. Description of the Related Art Conventionally, a connector having a connector main body into which a pipe can be inserted and a retainer attached to the connector main body is known as a connector used for a fastening portion such as an automobile cooling water pipe. For example, in Patent Document 1, when the retainer is positioned at the temporary fixing position where the pipe can be inserted into the connector body, and the positioning of the connector body is released by the insertion of the pipe, the retainer moves to the pipe retaining position, It comes to prevent it from coming off. In addition, a spring member is provided between the connector body and the retainer, and the retainer whose positioning has been released is moved to the pipe removal preventing position, thereby confirming whether the pipe is connected to the normal connection position of the connector body. You can check that.

JP 2006-105241 A

In consideration of the above facts, the present invention provides a connector capable of confirming connection with a minimum work area without accompanying a shape change in the radial direction at the time of pipe connection and removal.

A first aspect of the present invention is a connector to which a pipe having an annular flange portion formed on an outer peripheral surface is coupled, a housing having a cylindrical pipe insertion portion into which the pipe is inserted, A lock that is attached to the outer peripheral portion of the pipe insertion portion of the housing so as to be movable in the axial direction of the pipe insertion portion, and that holds the pipe in a connection position and a standby position where the flange portion of the pipe can pass through the pipe insertion portion. A ring that moves between a complete position, a lock mechanism that is attached to the ring and that switches between a locked state and a unlocked state that locks the pipe in the connecting position, and an outer peripheral surface of a pipe insertion portion of the housing A ring receiving portion formed to project, and a cam portion formed on the ring for switching the lock mechanism to the locked state or the unlocked state A pipe detection part formed on the ring, and when the pipe is inserted to a proper position of the pipe insertion part, and is spread by a flange part of the pipe; and the pipe detection part is formed integrally with the ring. And when the pipe is inserted to a proper position of the pipe insertion portion, the ring detection portion follows the movement of the pipe detection portion, and the ring can be moved to the lock completion position. There is provided a connector having a ring restricting portion that engages with the ring receiving portion to restrict the movement of the ring by moving from the lock completion position to the standby position.

In the above aspect, the ring is attached to the outer peripheral portion of the pipe insertion portion of the housing so as to be movable in the axial direction of the pipe insertion portion. When the ring is in a standby position where the flange portion of the pipe can pass through the pipe insertion portion, the ring restricting portion formed on the ring is engaged with the ring receiving portion formed on the housing, and the ring Is not movable in the axial direction of the pipe insertion portion with respect to the housing. In this standby position, the lock mechanism is in an unlocked state by a cam portion formed on the ring.

When the pipe is inserted into the pipe insertion part of the connector to the normal position at the standby position, the pipe detection part formed on the ring is pushed and spread by the flange part of the pipe. At this time, the ring restricting portion spreads in the same manner following the movement of the pipe detecting portion, so that the ring can move to the lock completion position by detaching from the ring receiving portion.

In this state, when the operator moves the ring in the axial direction of the pipe insertion portion from the standby position to the lock completion position, the lock mechanism is locked by the cam portion, and the pipe is locked at the connection position. At this time, since the ring is moving, the operator can visually confirm the fastening of the ring after the work.

On the other hand, when removing the pipe from the pipe insertion part of the connector housing, the lock mechanism is switched to the unlocked state by the cam part by moving the ring from the lock completion position to the standby position. It comes out of the department. Further, the ring restricting portion engages with the ring receiving portion to restrict the movement of the ring.

As described above, by moving the ring provided on the outer peripheral portion of the housing in the axial direction of the pipe insertion portion, the ring can be set to the standby position. For this reason, when the pipe is removed, the connector does not increase in the radial direction when the ring is set to the standby position.

According to a second aspect of the present invention, in the first aspect of the present invention, the cam portion is a slit, the lock mechanism is configured by an elastic member, and the lock is released from the unlocked state along the slit by elasticity. By moving to the state, the ring may move from the standby position to the lock completion position.

In the above aspect, the ring moves from the standby position to the lock completion position by automatically moving the lock mechanism from the unlocked state to the locked state along the slit formed in the ring by the elasticity of the lock mechanism. For this reason, the pipe can be reliably locked at the connecting position and workability is improved.

According to a third aspect of the present invention, in the second aspect of the present invention, the lock mechanism includes an attachment portion disposed on an outer peripheral portion of a pipe insertion portion of the housing, and a flange portion of the pipe that is bent from the attachment portion. It may be a linear spring having a lock portion that restricts the movement and an engagement portion that is bent from the lock portion and engages with the slit.

In the above aspect, the lock mechanism is attached to the outer peripheral portion of the pipe insertion portion of the housing, the lock portion bent from the attachment portion to restrict the movement of the flange portion of the pipe, and bent from the lock portion to be engaged with the slit. The locking mechanism can be incorporated between the housing and the ring by using a linear spring having engaging portions. For this reason, a connector can be reduced in size.

Since the first aspect of the present invention has the above-described configuration, it is possible to provide a connector capable of confirming connection in a minimum work area without accompanying a shape change in the radial direction at the time of pipe connection and removal.

Since the second aspect of the present invention has the above-described configuration, the pipe can be reliably locked at the connecting position and workability can be improved.

Since the third aspect of the present invention has the above configuration, the connector can be miniaturized.

It is a disassembled perspective view which shows the connector which concerns on this Embodiment. It is a perspective view which shows the connector which concerns on this Embodiment, and has shown the standby state. It is a perspective view which shows the connector which concerns on this Embodiment, and has shown the state which has inserted the pipe. It is a perspective view which shows the connector which concerns on this Embodiment, and has shown the lock completion state. It is a top view which shows the connector which concerns on this Embodiment. FIG. 6 is a cross-sectional view taken along a 6-6 cross-sectional line in FIG. 5 and shows a standby state. FIG. 6 is a cross-sectional view taken along the line 6-6 in FIG. 5 and shows a state where a pipe is inserted. FIG. 6 is a cross-sectional view taken along the line 6-6 in FIG. 5 and shows a locked state. FIG. 9 is a cross-sectional view taken along the line 9-9 in FIG. 5 and shows a standby state. FIG. 9 is a cross-sectional view taken along the line 9-9 in FIG. 5 and shows a state in which a pipe is inserted. FIG. 9 is a cross-sectional view taken along the line 9-9 in FIG. 5 and shows a locked state. It is the front view seen from the axial direction of the pipe insertion part which shows the connector which concerns on this Embodiment.

The connector according to the present embodiment will be described.
A connector 10 shown in FIG. 1 is used, for example, for fastening a cooling water pipe in an engine room of a vehicle, and is connected with a metal pipe 12 and a resin tube 13 attached thereto. In addition, a ring-shaped flange portion 12 A is formed so as to protrude from an intermediate portion in the longitudinal direction of the outer periphery of the pipe 12.

As shown in FIG. 1, the connector 10 is mounted on the outer periphery of a housing (connector body) 14 formed of a cylindrical body bent in an L shape and a pipe insertion portion 14 A that is one end of the housing 14. And a wire (lock mechanism) 18 as an example of a lock mechanism attached to the ring 16. The pipe insertion portion 14A of the housing 14 has a substantially cylindrical shape, and the pipe 12 is connected to the pipe insertion portion 14A. The other side of the housing 14 is a substantially cylindrical tube insertion portion 14B, and the tube 13 is attached to the tube insertion portion 14B.

As shown in FIG. 6, the base portion of the pipe insertion portion 14A of the housing 14 has a small diameter portion 14D whose inner diameter is smaller than the other portion (large diameter portion) 14C of the pipe insertion portion 14A. O-

rings

20 and 22 are fitted on the inner peripheral surface of the small-diameter portion 14D, and an annular spacer 24 having a rectangular cross section is disposed between the O-ring 20 and the O-ring 22. .

As shown in FIG. 8, when the pipe 12 is connected to the pipe insertion portion 14 A of the housing 14, the O-

rings

20 and 22 create a gap between the inner peripheral surface of the pipe insertion portion 14 A and the outer peripheral surface of the pipe 12. It is designed to be buried and sealed.

Further, an annular bush 25 is fitted adjacent to the O-ring 22 on the inner peripheral surface of the large-diameter portion 14C in the pipe insertion portion 14A of the housing 14. The inner diameter of the bush 25 is substantially the same as the outer diameter of the pipe 12, and the bush 25 is made of, for example, polyacetal or nylon.

On the other hand, the distal end portion of the tube insertion portion 14B of the housing 14 is a tapered portion 14E having an outer peripheral portion whose diameter increases from the distal end side toward the root side. The outer diameter on the tip end side of the tapered portion 14E is smaller than the inner diameter of the tube 13, and the tube 13 can be easily inserted. An annular protrusion 14F is provided at the rear end of the tapered portion 14E, and the outer diameter of the annular protrusion 14F is larger than the inner diameter of the tube 13. Accordingly, when the tube 13 is inserted into the insertion portion 14B of the housing 14, the tube 13 is press-fitted.

As shown in FIG. 1, a flange 14G having an outer diameter larger than the outer diameter of the insertion portion 14B is formed at the base of the insertion portion 14B of the housing 14, and the distal end surface 13A of the tube 13 is formed at the flange 14G. The movement of the tube 13 is regulated by abutting on. In this state, the tube 13 is fixed to the insertion portion 14B by a dedicated clamp (not shown).

A pair of ring receiving portions 40 project from the outer peripheral surface of the pipe insertion portion 14 A of the housing 14 (only one ring receiving portion 40 is shown in FIG. 1). They are formed at positions spaced 180 degrees along the outer peripheral surface of the pipe insertion portion 14A. Further, the ring receiving portion 40 is a linear convex portion extending in the axial direction of the pipe insertion portion 14A, and reaches the central portion in the axial direction of the pipe insertion portion 14A from the root portion to the tip portion of the pipe insertion portion 14A. ing. Furthermore, the tip of the ring receiving portion 40 has an inclined surface 40A, and an engaging recess 42 is formed in the vicinity of the inclined surface 40A in the longitudinal direction of the ring receiving portion 40.

A pair of rectangular openings 43 each having a longitudinal direction in the axial direction of the pipe insertion portion 14A are formed in a portion of the pipe insertion portion 14A of the housing 14 adjacent to the engagement recess 42 of each ring receiving portion 40. Yes. In addition, a pair of slits 46 are formed along the circumferential direction in the axially intermediate portion of the pipe insertion portion 14A. These openings 43 and slits 46 are respectively formed at positions spaced 180 degrees along the outer peripheral surface of the pipe insertion portion 14A.

As shown in FIG. 12, a pair of guide ribs 48 project from the outer peripheral surface of the pipe insertion portion 14A of the housing 14, and these guide ribs 48 are separated by 180 degrees along the outer peripheral surface of the pipe insertion portion 14A. Formed in position. The guide rib 48 is a convex portion that extends linearly in the axial direction of the pipe insertion portion 14A, and reaches the tip from the root of the pipe insertion portion 14A. On the other hand, the ring 16 is formed with a pair of guide grooves 61 that engage with the guide ribs 48 of the housing 14. These guide grooves 61 cross the ring 16 along the axial direction of the ring 16, and the circumferential positions of the ring 16 and the pipe insertion portion 14 A of the housing 14 by the engagement of the guide rib 48 and the guide groove 61. The relationship is determined.

As shown in FIG. 1, the slits 46 are respectively formed at portions between the pair of ring receiving portions 40. Further, both end portions 46 A of each slit 46 reach the vicinity of the opening 43.

As shown in FIG. 5, the wire 18 is composed of a linear spring made of an elastic member such as metal (SUS) or resin, and is attached to the outer peripheral portion of the pipe insertion portion 14 A of the housing 14. In this embodiment, the lock mechanism (wire 18) is bent by bending a linear spring having a circular cross section, but instead, a lock member (sheet metal) having a rectangular cross section may be bent.

As shown in FIG. 1, the wire 18 includes a pair of lock portions 18A, a pair of straight portions (attachment portions) 18B as an attachment portion, a curved portion (attachment portion) 18C, a pair of engagement portions 18D, have. The curved portion 18C of the wire 18 is arranged in an arc shape along the circumferential direction of the outer peripheral portion of the pipe insertion portion 14A of the housing 14, and the straight portion 18B bent from both ends of the curved portion 18C is a pipe of the housing 14. It arrange | positions linearly along the axial direction of the outer peripheral part of 14 A of insertion parts. The pair of lock portions 18A are bent in parallel from the straight portion 18B to the direction intersecting the axial direction of the pipe insertion portion 14A of the housing 14, and the pair of engaging portions 18D are bent from the pair of lock portions 18A to the curved portion 18C. It is bent in an L shape toward

As shown in FIG. 5, the curved portion 18 C of the wire 18 is disposed along a flange 14 H formed in a ring shape on the outer peripheral portion of the small-diameter portion 14 D of the housing 14. The movement in the direction of arrow A in FIG. 5 is regulated by the flange 14H. Further, the straight portion 18B of the wire 18 is disposed along the guide rib 48 of the housing 14, and the guide rib 48 restricts the movement of the wire 18 in the circumferential direction (direction of arrow B in FIG. 5).

As described above, the locking mechanism includes the straight portion 18B and the bending portion 18C disposed on the outer peripheral portion of the pipe insertion portion 14A of the housing 14, and the locking portion 18A that is bent from the bending portion 18C and restricts the movement of the flange portion 12A of the pipe 12. And the engagement portion 18D that is bent from the lock portion 18A and engages with the slit 50, the lock mechanism (wire 18) can be incorporated between the housing 14 and the ring 16. It has become.

The ring 16 is attached to the outer peripheral portion of the pipe insertion portion 14A of the housing 14 so as to be movable in the axial direction of the pipe insertion portion 14A (directions of arrows C and D in FIG. 5). The ring 16 has a standby position where the flange portion 12A of the pipe 12 can pass through the pipe insertion portion 14A (the position shown in FIGS. 5 and 2), and a lock completion position where the flange portion 12A of the pipe 12 cannot pass through the pipe insertion portion 14A. (Position in FIG. 4).

As shown in FIG. 5, the ring 16 has a pair of slits (cam portions) 50 as cam portions formed at positions spaced apart by 180 degrees along the circumferential direction of the ring 16. 16 near both ends. In addition, a portion of the slit 16 on the insertion side of the ring 16 into the pipe insertion portion 14 A is a lock portion 50 A that extends along the axial direction of the ring 16. A portion of the slit 50 that follows the lock portion 50A is an inclined portion 50B that extends obliquely with respect to the axial direction of the ring 16, and a portion that follows the inclined portion 50B of the slit 50 extends along the axial direction of the ring 16. It is a short locking portion 50C. Note that both engaging portions 18D of the wire 18 are inserted into the slit 50 of the ring 16, and the both engaging portions 18D of the wire 18 and the slit 50 move relative to each other.

As shown in FIG. 6, the lock portion 18 A of the wire 18 is inserted into the slit 46 of the housing 14.

As shown in FIG. 2, in a state where both engaging portions 18 D of the wire 18 are locked to the locking portions 50 C of the slit 50, the wire 18 is elastically deformed, and the lock portion 18 A becomes a standby position separated from each other. . On the other hand, as shown in FIG. 4, in a state where both engaging portions 18D of the wire 18 are moved to the lock portion 50A of the slit 50 or in the vicinity of the lock portion 50A, as shown in FIG. 18A moves in a direction approaching each other (in the direction of arrow E in FIG. 12) and is located on the movement locus of the flange portion 12A of the pipe 12.

That is, the wire 18 is connected at the standby position (open position) where the flange portion 12A of the pipe 12 can pass through the pipe insertion portion 14A and the pipe 12 at the normal position, and the flange portion 12A of the pipe 12 connects the pipe insertion portion 14A. It is elastically deformed to a lock completion position (closed position) where it cannot pass.

As shown in FIG. 1, a pair of elastic pieces 60 are formed along the circumferential direction of the ring 16 at an intermediate portion in the axial direction of the ring 16. The elastic piece 60 has a base portion 60 A connected to the base portion 16 A of the ring 16, and the elastic piece 60 can be elastically deformed in the radial direction of the ring 16 from the root portion 60 A. The elastic piece 60 in the ring 16 has a guide groove 61 formed in the vicinity of the root portion 60A.

A protrusion (pipe detection part) 62 as a pipe detection part is formed on the distal end part 60 B of the elastic piece 60 so as to face the inner side in the radial direction of the ring 16. Further, an extended portion (ring restricting portion) 64 as a ring restricting portion protrudes from the distal end portion 60B of the elastic piece 60 in the circumferential direction, and the width of the extending portion 64 is 60 widths of the elastic piece. It is narrower than that.

As shown in FIG. 5, the extended portion 64 of the ring 16 is provided corresponding to the ring receiving portion 40 of the housing 14, and when the ring 16 is in the standby position, the extended portion 64 is engaged with the engaging recess 42. It comes to match. Further, when the extended portion 64 of the ring 16 engages with the engaging recess 42 of the ring receiving portion 40 of the housing 14, the movement of the pipe insertion portion 14A of the ring 16 in the axial direction is restricted.

As shown in FIG. 6, the protrusion 62 of the ring 16 passes through the opening 43 of the housing 14, and the tip of the protrusion 62 has an inclined surface 62A on the insertion side of the pipe 12.

Therefore, as shown in FIG. 7, when the pipe 12 is inserted to the normal position of the pipe insertion portion 14A of the housing 14 of the connector 10, the flange portion 12A of the pipe 12 slides with the inclined surface 62A of the protrusion 62, and the elastic piece 60 is spread outward. Following this movement, as shown in FIG. 10, the engagement between the extended portion 64 of the ring 16 and the engagement recess 42 of the ring receiving portion 40 of the housing 14 is released, and the ring 16 can move in the axial direction. It becomes.

(Action / Effect)
Next, the operation and effect of the connector according to this embodiment will be described.
As shown in FIGS. 2, 5, 6, and 9, when the pipe 12 is not inserted into the pipe insertion portion 14 A of the housing 14 of the connector 10 (standby state), the ring 16 is the pipe insertion portion of the housing 14. It is on the back side of 14A.

In this standby state, both engaging portions 18D of the wire 18 are locked to the locking portions 50C of the slit 50, the wire 18 is elastically deformed, and the standby state in which the lock portions 18A are separated from each other (expanded state). Is in position. Further, the extending portion 64 provided on the elastic piece 60 of the ring 16 is engaged with the engaging recess 42 of the ring receiving portion 40 of the housing 14, and the movement of the ring 16 in the axial direction of the pipe insertion portion 14A is restricted. (Moveable)

In this standby state, as shown in FIGS. 3, 7, and 10, when the pipe 12 is inserted into the pipe insertion portion 14 A of the housing 14 of the connector 10 to the normal position, the flange portion 12 A of the pipe 12 is connected to the ring 16. The protrusion 62 slides with the inclined surface 62A of the protrusion 62 provided on the elastic piece 60, and the protrusion 62 is pushed outward together with the elastic piece 60.

At this time, as shown in FIG. 10, the extension part 64 of the ring 16 is also pushed outwards following the movement of the elastic piece 60, so that the extension part 64 and the engagement recess 42 of the ring receiving part 40 Is disengaged and the ring 16 is movable in the axial direction (the direction of arrow C in FIG. 10).

In this state, as shown in FIG. 7, the protrusion 62 provided on the elastic piece 60 of the ring 16 is in contact with the outer periphery of the flange portion 12 A of the pipe 12. Further, both engaging portions 18 D of the wire 18 are engaged with the locking portions 50 C of the slit 50.

In this state, the operator slightly moves the ring 16 along the axial direction of the pipe insertion portion 14A from the standby position toward the lock completion position (in the direction of arrow C in FIGS. 7 and 10) to lock the slit 50. When the engagement between the portion 50C and the engaging portions 18D of the wire 18 is released (2 actions), the wire 18 returns to a closed state in which the pair of lock portions 18A are separated from each other and the pair of lock portions 18A are close to each other. The open state biased in the direction returns to the closed state by the biasing force. Due to the force that the locking portion 18A of the wire 18 returns to the closed state, the engaging portion 18D of the wire 18 and the inclined portion 50B of the slit 50 formed in the ring 16 move relative to each other, and the ring 16 moves from the standby position to the locking completion position. Move automatically to. For this reason, as shown in FIG. 12, the lock part 18A of the wire 18 moves on the locus | trajectory to the drawing-out direction (arrow C direction of FIG. 8) of the flange part 12A of the pipe 12. As shown in FIG. As a result, the movement of the pipe 12 in the removal direction (the direction of arrow C in FIG. 8) is restricted by the lock portion 18A of the wire 18.

Also, as the ring 16 moves from the standby position to the lock completion position, the extended portion 64 slides downward on the inclined surface 40A of the ring receiving portion 40 due to the elasticity of the elastic piece 60 of the ring 16. For this reason, the protrusion 62 of the ring 16 moves to the inside of the pipe insertion portion 14A, and moves on the locus of the flange portion 12A of the pipe 12 in the drawing direction (the direction of arrow C in FIG. 8).

Furthermore, in this embodiment, the ring 16 moves from the standby position to the lock completion position along the axial direction of the pipe insertion portion 14A. For this reason, the operator can confirm that the fastening is completed after the work by visually observing the position of the ring 16.

In addition, when the outer peripheral portion of the pipe insertion portion 14A of the housing 14 is colored and the ring 16 moves from the standby position to the lock completion position along the axial direction of the pipe insertion portion 14A, the coloring portion is exposed, Confirmation of fastening completion may be facilitated.

On the other hand, when removing the pipe 12 from the pipe insertion portion 14A of the housing 14 of the connector 10, the operator moves the ring 16 from the lock completion position along the axial direction of the pipe insertion portion 14A to the standby position direction (arrow D in FIG. 11). When moving in the direction), the extending portion 64 of the ring 16 slides on the inclined surface 40A of the ring receiving portion 40 of the housing 14 and spreads in the outer direction (arrow F direction in FIG. 11) together with the elastic piece 60. Further, as shown in FIG. 7, following the movement of the elastic piece 60, the protrusion 62 of the ring 16 moves to the outer peripheral portion of the flange portion 12 A of the pipe 12. Further, the ring 16 moves from the lock completion position to the standby position along the axial direction of the pipe insertion portion 14 A, so that both the engaging portions 18 D of the wire 18 move along the inclined portion 50 B of the slit 50. Moving from the vicinity of the portion 50A to the locking portion 50C, both engaging portions 18D of the wire 18 are locked to the locking portion 50C of the slit 50. For this reason, the lock portions 18A of the wire 18 are separated from each other, deviated from the locus of the flange portion 12A in the drawing direction (the direction of arrow C in FIG. 8), and switched to the unlocked state.

As a result, the pipe 12 comes out of the pipe insertion portion 14A of the housing 14 of the connector 10.

Thus, in the present embodiment, the ring 16 provided on the outer peripheral portion of the pipe insertion portion 14A of the housing 14 is moved in the axial direction of the pipe insertion portion 14A, so that the ring 16 is moved to the standby position and the lock completion position. I can move. For this reason, the connector 10 of this embodiment can confirm connection in the minimum work area, without accompanying the shape change to radial direction at the time of pipe connection and removal.

In this embodiment, the engaging portion 18D of the wire 18 moves along the slit 50 formed in the ring 16 due to the elasticity of the wire 18, and the ring 16 automatically moves from the standby position to the lock completion position. For this reason, the pipe 12 can be reliably locked at the connecting position and workability is improved.

Further, in the present embodiment, the locking mechanism is bent from the curved portion 18C and the linear portion 18B and the curved portion 18C disposed on the outer peripheral portion of the pipe insertion portion 14A of the housing 14, and the movement of the flange portion 12A of the pipe 12 is restricted. The wire 18 is formed of a linear spring having a lock portion 18A and an engagement portion 18D that is bent from the lock portion 18A and engages with the slit 50. For this reason, the lock mechanism (wire 18) can be incorporated between the housing 14 and the ring 16, and the connector 10 can be reduced in size.

(Other embodiments)
In the above, the present invention has been described in detail with respect to specific embodiments. However, the present invention is not limited to the above embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, in the above-described embodiment, the locking portion 50C is formed in the slit 50, and both the engaging portions 18D of the wire 18 are engaged with the locking portion 50C. It is good also as a structure which does not provide the part 50C. In this configuration, the pipe 12 is inserted to the proper position of the pipe insertion portion 14 A of the housing 14 of the connector 10, and the extended portion 64 of the ring 16 is engaged with the engagement recess 42 of the ring receiving portion 40 of the housing 14. At the same time (with one action), the engagement portion 18D of the wire 18 moves along the slit 50 formed in the ring 16 due to the elasticity of the wire 18, and the ring 16 automatically moves from the standby position to the lock completion position. Move on.

Claims

A connector to which a pipe having an annular flange formed on the outer peripheral surface is connected,
A housing in which a cylindrical pipe insertion portion into which the pipe is inserted is formed;
It is attached to the outer periphery of the pipe insertion portion of the housing so as to be movable in the axial direction of the pipe insertion portion, and the flange portion of the pipe holds the pipe in the connection position and the standby position where the pipe insertion portion can pass through. A ring that moves between the lock completion position and
A locking mechanism that is attached to the ring and that switches between a locked state and an unlocked state that locks the pipe in the coupling position;
A ring receiving portion formed to project from the outer peripheral surface of the pipe insertion portion of the housing;
A cam portion formed on the ring for switching the lock mechanism to the locked state or the unlocked state;
A pipe detection part formed on the ring, and when the pipe is inserted to a normal position of the pipe insertion part, the pipe detection part is spread by the flange part of the pipe;
The ring is formed integrally with the pipe detection unit, and when the pipe is inserted to a proper position of the pipe insertion unit, the ring detection unit follows the movement of the pipe detection unit and is detached from the ring receiving unit. A ring restricting portion that is movable to the lock completion position and engages the ring receiving portion to restrict the movement of the ring by moving the ring from the lock completion position to the standby position;
Having a connector.
The cam portion is a slit, and the lock mechanism is formed of an elastic member, and the ring moves from the unlocked state to the locked state along the slit by elasticity, so that the ring is moved from the standby position to the lock completed position. The connector according to claim 1, wherein
The lock mechanism includes an attachment portion disposed on an outer peripheral portion of the pipe insertion portion of the housing, a lock portion bent from the attachment portion to restrict movement of the flange portion of the pipe, and bent from the lock portion to the slit. The connector according to claim 2, which is a linear spring having an engaging portion to be engaged.