JP2011074990A - Connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector excellent in detecting capability of recognizing that piping P is connected to a normal connecting position, and easy to reset a member for holding a seal member to the initial rotating position. <P>SOLUTION: This connector 10 includes: a housing 20; a seal member 40; a rotating ring 50; and a sliding ring 60. A retainer 70 detects that piping P is at the normal connecting position by moving from a temporary stop position to a detecting position. The retainer 70 regulates the movement of the retainer 70 from the temporary stop position to the detecting position with interference of a temporary stopper step part 78 of the retainer 70 with a regulating projection 56 of the rotating ring 50. The sliding ring 60 is pushed by Pa of the piping P, and rotates the rotating ring 50 to a rotation finishing position with a guide mechanism, and an engagement claw 63 interferes with the rotating ring 50 to change elastic deformation and, as a result, to facilitate attachment/detachment thereof. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a connector used for connecting a pipe having an annular protrusion on its outer periphery.

  This type of connector is also called a quick connector, and various proposals have been made for the purpose of simplifying pipe connection (for example, Patent Document 1). The connector of this patent document is provided with a detection claw that prevents the retainer from being completely attached when the pipe is not inserted into the insertion hole of the housing. The detection claw is engaged with a retainer mounting hole in the housing, and the engagement of the detection claw is released by interfering with the annular protrusion and bending outward from the protrusion as the pipe is inserted into the insertion hole. The retainer can be installed.

  In the connector proposed in Patent Document 1 described above, the retainer cannot be mounted unless the detection claw is disengaged. To disengage the detection claw, the retainer claw is released to the outside by an annular protrusion of the pipe. It is essential to bend. Moreover, since it is necessary to form the detection claw thinly from the viewpoint of ensuring the bending of the detection claw to the outside, there is a problem that the rigidity of the detection claw is lowered.

  As another conventional technique, as described in Patent Document 2, a configuration including a ring spacer that is mounted by rotating in a connection hole of a housing is known. However, with the ring spacer, if the pipe is pulled out for reconnection after being fitted into the connection hole of the housing, the space ring remains in the housing, which is troublesome for reconnection. It was.

JP 2005-172161 A JP 2005-214416 A

  The present invention is based on solving the problems of the conventional technology described above, and has excellent detection performance for confirming that the pipe is connected to the regular connection position, and to the rotation initial position of the member for holding the seal member. An object of the present invention is to provide a connector that can be easily restored.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

[Application Example 1]
Application Example 1 is a connector for connecting a pipe having a flange portion formed by an annular protrusion and a seal surface on the tip side of the flange portion.
A housing having a connection hole for connecting the pipe and inserting the pipe in the axial direction;
A seal member that is disposed in the connection hole and seals between the pipe passage and the outside by being interposed between the seal surface and the inner wall surface of the connection hole;
A rotating ring having an annular ring body disposed in the connection hole so as to be rotatable in a range from a rotation initial position to a rotation completion position, and holding the seal member;
A slide having a ring main body supported so as to be movable in the axial direction on the inner peripheral side of the rotating ring, and an engaging claw protruding in the axial direction from both sides of the end of the ring main body and engaging with the flange portion. Dynamic ring,
It is a member for confirming that the piping has been connected to the normal connection position by moving from the temporary fixing position to the detection position in the direction perpendicular to the axial direction from the temporary fixing position. And an engaging arm projecting so as to enclose a part of the outer peripheral surface of the housing from both ends of the retainer operating portion, and formed inside the engaging arm and entering the connection hole and A retainer having a retaining piece for retaining the pipe by engaging the flange portion;
Provided in cooperation with the housing, the rotating ring, and the sliding ring, the rotating ring is rotated in the connection hole by receiving the moving force in the axial direction of the pipe in the axial direction. A cam mechanism that converts the force to
A regulation mechanism provided in cooperation with the housing, the rotating ring, the sliding ring, and the retainer, for regulating the movement of the rotating ring, the sliding ring, and the retainer;
With
The regulatory mechanism is
When the rotating ring is in the initial rotation position, the retainer temporarily fixing step portion interferes with the restricting protrusion of the rotating ring, thereby restricting the retainer from moving from the temporarily fixed position to the detection position, A retainer movement restricting portion that releases the interference and allows the retainer to move to a detection position when the rotating ring is in a rotation completion position;
Until the rotation ring returns from the rotation completion position to the rotation initial position, elastic deformation is restricted so that the engagement claw does not come off from the flange portion, and when the rotation ring returns to the rotation initial position, the engagement claw A return portion that allows elastic deformation so as to be detached from the flange portion,
It is characterized by having.

  In the first application example, the sealing member, the rotating ring and the sliding ring, and the retainer are assembled to the housing and temporarily assembled to the state before the pipe is inserted, by the following operation. The seal member, the rotating ring, and the sliding ring are inserted into the connection hole. Then, the retainer is set at the temporary fixing position. In this state, the retainer restricting portion of the restricting mechanism interferes with the temporarily fixing step portion of the retainer with the restricting protrusion of the rotating ring, and therefore, the retainer is restricted from moving from the temporarily fixed position to the detection position.

  When the pipe is inserted into the connection hole of the housing, the flange portion of the pipe pushes the sliding ring, and the rotating ring is rotated from the rotation initial position to the rotation completion position. Then, by moving the retainer to the detection position, the pipe is connected at the regular connection position in a state where the rotation of the rotating ring is restricted by the rotation restricting portion. At this time, when the rotating ring rotates to the rotation completion position, the interference is released and the retainer can be moved to the detection position. The rotating ring uses a cam mechanism to convert the amount of movement in the axial direction of the pipe into a large amount of movement in the direction of rotation, so the interference area can be increased and the rigidity can be increased, improving detection accuracy and durability. Can be improved.

  When removing the pipe, the first and second engaging claws are separated from the flange portion until the first and second engaging claws return from the rotation completion position of the stopper ring to the initial rotation position by the restriction wall of the return portion. Since the elastic deformation is restricted so that it does not come off, and the first and second engaging claws are allowed to come off from the flange when returning to the initial rotation position, the stopper ring is in its original position. It returns to a certain level and has excellent operability for return.

[Application Example 2]
The cam mechanism of Application Example 2 is provided on a pressing surface that is formed on the ring body and receives an axial force from the flange portion when the pipe is inserted, and on the rotating ring and the sliding ring. It is comprised from the inclined guide groove and guide protrusion, and when the said press surface receives the axial direction force from the said flange part, it can comprise so that it may guide so that the said rotation ring may rotate within the said connection hole. .

[Application Example 3]
The retainer restricting portion of Application Example 3 is formed on the engagement arm, and includes a first lock claw that engages with the housing at the temporary fixing position and a second lock claw that engages with the housing at the detection position. Can take.

[Application Example 4]
The rotating ring of Application Example 4 includes an annular protrusion on the outer peripheral portion of the ring body, and the annular protrusion is press-fitted into a positioning recess formed on the inner wall of the connection hole, so that It is possible to adopt a configuration that can rotate and is prevented from being removed in the axial direction. Since the rotating ring is rotatably fitted in the positioning recess of the housing by the annular protrusion, when the internal pressure is applied to the rotating ring, the annular protrusion receives a uniform pressure. Therefore, the durability of the rotating ring is not lowered by receiving a force that causes the rotating ring to tilt and the end of the rotating ring partially receiving a large force.

It is sectional drawing which shows the state which connected piping to the connector concerning one Example of this invention. It is a perspective view which decomposes | disassembles and shows the connector concerning one Example of this invention. It is a perspective view which shows a housing. FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. It is a perspective view which shows a rotation ring, a sliding ring, and a part of housing. It is a perspective view which shows the state before attaching a retainer to a housing. It is a perspective view which shows a retainer. It is explanatory drawing which shows the state before attaching a connector. It is explanatory drawing explaining the connection operation | work of a connector. FIG. 10 is an explanatory diagram illustrating a connection operation following FIG. 9. It is explanatory drawing explaining the connection operation | work following FIG. It is explanatory drawing explaining the connection operation | work following FIG. It is explanatory drawing explaining the connection operation following FIG. FIG. 14 is a sectional view taken along line 14-14 in FIG. 13. It is explanatory drawing explaining the connection operation | work following FIG. FIG. 16 is an explanatory diagram illustrating connection work following FIG. 15. It is explanatory drawing explaining the connection operation | work following FIG. It is explanatory drawing explaining the connection operation | work following FIG. FIG. 19 is a cross-sectional view taken along line 19-19 of FIG.

(1) Schematic Configuration of Connector 10 Hereinafter, embodiments of the present invention will be described based on examples. FIG. 1 is a sectional view showing a state in which a pipe P is connected to a connector 10 according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view showing the connector 10 according to an embodiment of the present invention.

  1 and 2, a connector 10 is for connecting a metal or resin pipe P to a synthetic resin tube Tb, and includes a housing 20, a seal member 40 made of an O-ring, and a rotating ring. 50, a sliding ring 60, and a retainer 70. The pipe P is formed of a round pipe material made of metal or resin, and includes a flange portion Pa formed of a bulge portion protruding in an annular shape on an outer peripheral surface at a position spaced a predetermined distance from the front end surface of the pipe. And this piping P makes the front end side from the flange part Pa the connection part Pb, and makes the outer peripheral surface the sealing surface sealed by the sealing member 40. The seal member 40, the rotating ring 50, and the sliding ring 60 are inserted into the housing 20, the retainer 70 is attached to the temporary fixing position, and the pipe P is inserted to the proper connection position, and the retainer 70 is moved from the temporary fixing position. By moving to the detection position in the direction perpendicular to the axial direction, it can be confirmed that the pipe P has been connected to the normal connection position.

(2) Configuration of each part of connector 10 (2) -1 Housing 20
3 is a perspective view showing the housing 20, and FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. The housing 20 is a cylindrical resin molded product, and is connected to a bamboo shoot-like tube connecting portion 22 into which the tube Tb (FIG. 1) is press-fitted and a pipe P (FIG. 1) formed at one end of the tube connecting portion 22. And a pipe connection part 24 for the Hereinafter, the following description will be given with the tube connection portion 24 side of the connector 10 as the front side and the tube connection portion 22 side as the rear side.

  In FIG. 4, the housing 20 includes multistage connection holes 26 in the cylinder from the rear side toward the front side. The connection hole 26 includes first to fourth connection holes 26a to 26d. The first connection hole 26a is a flow path reaching the tube Tb, and the second connection hole 26b is a hole into which the connection portion Pb of the pipe P is inserted. The third connection hole 26 c is a hole for mounting the seal member 40 and the tip of the rotating ring 50. In this case, the seal member 40 is held at the end of the rotary ring 50 in the third connection hole 26c. The fourth connection hole 26d is a hole that accommodates the rotating ring 50 and the sliding ring 60, and the flange portion Pa enters and surrounds the flange portion with the insertion of the pipe P, and a part of the retainer 70 enters. A positioning recess 27 for rotatably positioning the rotary ring 50 is formed in the outer peripheral portion of the inclined wall of the fourth connection hole 26d and on the inner wall of the pipe connection portion 24. In addition, a pin groove 28 for guiding the sliding ring 60 in the axial direction and a protrusion groove 29 for guiding the rotating ring 50 in the rotational direction are formed in the pipe connecting portion 24 in the axial direction.

  A retainer mounting portion 30 for mounting the retainer 70 is formed on the front side of the pipe connecting portion 24. The retainer mounting portion 30 has retainer guide portions 32 formed on both sides thereof. The retainer guide portion 32 is formed with a first engagement portion 33 and a second engagement portion 34 for holding the retainer 70 at the temporary stop position and the detection position, respectively.

(2) -2 Rotating ring 50
FIG. 5 is a perspective view showing a part of the rotating ring 50, the sliding ring 60 and the housing 20. The rotary ring 50 is disposed in the connection hole 26 so as to be rotatable in the range from the rotation initial position to the rotation completion position, and is a member for holding the seal member 40, and includes a ring main body 52 having a ring storage hole 50P. Yes. The ring body 52 is formed with protrusions, grooves, notches and the like. That is, an annular protrusion 52 a is formed on the entire outer periphery of the ring body 52. The annular protrusion 52a is press-fitted and fitted into the positioning recess 27 (FIG. 4) so that the rotating ring 50 can be rotated with respect to the pipe connecting portion 24, but is prevented from being removed in the axial direction. A guide groove 54 is cut out at the end of the ring body 52. The guide groove 54 continuously forms an axial groove 54a and an inclined circumferential groove 54b, and moves the sliding ring 60 in the axial direction. A bending recess 55 is formed in the inner peripheral portion of the ring main body 52. Further, a regulation projection 56 is formed on the outer peripheral portion of the ring main body 52. The restriction projection 56 includes a cantilever restriction piece 56a and a restriction step part 56b protruding from the restriction piece 56a in the outer peripheral direction. In addition, since the groove | channel, protrusion, etc. which were formed in the ring main body 52 cooperate with another member, it mentions later in relation to the member.

(2) -3 Sliding ring 60
The sliding ring 60 includes a ring body 62 that is supported by the ring housing hole 50P on the inner peripheral side of the rotary ring 50 so as to be movable in the axial direction, and a pipe projecting in the axial direction from both sides of the end of the ring body 62. And an engaging claw 63 that engages with the flange portion Pa of the P. A pressing surface 62 a that is pressed by the flange portion Pa of the pipe P is formed along the inner peripheral portion of the ring body 62. Further, a part of the pressing surface 62a has a notch 62b where the engaging claw 63 protrudes to facilitate elastic deformation of the engaging claw 63. The engagement claw 63 includes an engagement piece 63a that is cantilevered from the end of the ring main body 62, and a claw portion 63b that is formed at the tip of the engagement piece 63a. Further, a guide pin 64 that is guided by the guide groove 54 of the rotating ring 50 protrudes from the outer peripheral portion of the ring main body 62. In addition, since the groove | channel, protrusion, etc. which were formed in the ring main body 62 cooperate with another member, it mentions later in relation to the member.

(2) -4 Retainer 70
FIG. 6 is a perspective view showing a state before the retainer 70 is assembled to the housing 20, and FIG. 7 is a perspective view showing the retainer 70. The retainer 70 is a member that is externally mounted on the housing 20 and is a member for confirming the completion of the connection of the pipe P to the normal connection position by moving from the temporary fixing position to the detection position perpendicular to the axial direction. An operating portion 71, an engaging arm 72 that protrudes from both ends of the retainer operating portion 71 so as to surround a part of the outer peripheral surface of the housing 20, and an inner side of the engaging arm 72 that is formed inside the connecting hole 26. And a retaining piece 76 for retaining the pipe P by engaging and engaging with the flange portion Pa. Note that the operation of the protrusions and the like formed on the retainer 70 will be described later in relation to other members because it works with other members.

(2) -5 Cam Mechanism FIG. 8 is an explanatory view showing a state before the connector 10 is assembled. 5 and 8, the cam mechanism is provided in cooperation with the housing 20, the rotating ring 50, and the sliding ring 60. That is, the cam mechanism is formed on the ring body 62 and is axially extended from the flange portion Pa when the pipe P is inserted. A pressing surface 62a that receives force and a guide mechanism are provided. The guide mechanism includes a guide groove 54 cut out from one end of the ring body 52 of the rotating ring 50 and a guide pin 64 protruding from the ring body 62 of the sliding ring 60. The guide groove 54 includes an axial groove 54a formed in the axial direction and a circumferential groove 54b inclined with respect to the axial direction. With this cam mechanism configuration, when the pressing surface 62a of the sliding ring 60 receives an axial force from the flange portion Pa of the pipe P, the rotation of the sliding ring 60 is restricted by the pin groove 28, and the guide Since the pin 64 pushes the groove end of the circumferential groove 54 b of the rotating ring 50, the rotating ring 50 rotates in the connection hole 26.

(2) -6 Restricting Mechanism The restricting mechanism is provided in cooperation with the housing 20, the rotating ring 50, the sliding ring 60, and the retainer 70, and restricts the movement of the rotating ring 50, the sliding ring 60, and the retainer 70. The restricting mechanism includes a retainer movement restricting portion and a return portion.

  5 and 6, the retainer movement restricting portion includes a restricting protrusion 56 formed on the rotating ring 50 and a temporary fixing step 78 formed on the retainer 70. When the rotary ring 50 is in the initial rotation position, the temporary fixing step 78 is brought into contact with the restricting projection 56 of the rotary ring 50 while being inserted into the through hole 38 of the retainer mounting portion 30, so that the retainer 70 is The movement from the temporary stop position to the detection position is restricted (see FIGS. 13 and 14). On the other hand, when the rotating ring 50 is in the rotation completion position, the temporary fixing step portion 78 does not hit the restricting projection 56, and thus allows the retainer 70 to move to the detection position (see FIGS. 18 and 19).

  In FIG. 5, the return portion includes a bending recess 55 formed in the inner peripheral portion of the ring body 52 of the rotating ring 50. When the rotating ring 50 is in the initial rotation position with the sliding ring 60 assembled to the rotating ring 50, the bending recess 55 is connected to the flange portion Pa of the pipe P by the claw portion 63 b of the engaging claw 63. When the is pressed, the engaging piece 63a of the engaging claw 63 is allowed to elastically deform. On the other hand, when the rotary ring 50 is in the rotation completion position, the engagement piece 63 a of the engagement claw 63 is restricted from being elastically deformed by hitting the inner wall of the ring main body 52.

(3) Assembly and connection work of the connector 10 The connector 10 configured as described above is used as follows.
(3) -1 Temporary Assembly Work To assemble the seal member 40, the rotating ring 50, the sliding ring 60, and the retainer 70 to the housing 20 and temporarily assemble the pipe P before insertion, It is done by the work of. As shown in FIG. 9, the seal member 40 is inserted into the third connection hole 26c through the fourth connection hole 26d. Next, the rotating ring 50 is inserted into the fourth connection hole 26d. That is, the restricting protrusion 56 of the rotating ring 50 is aligned with the protruding groove 29 of the housing 20, the rotating ring 50 is inserted into the fourth connection hole 26 d, and the annular protrusion 52 a on the outer periphery of the tip of the rotating ring 50 is inserted into the positioning recess 27. Press fit. As a result, as shown in FIG. 10, the rotating ring 50 has a range in which the restricting protrusion 56 moves in the protrusion groove 29 with respect to the housing 20, that is, the rotation initial position Ps above the protrusion groove 29 shown in the figure. It is supported so as to be rotatable within the range of the sliding completion position Pe on the right end side.

  Next, the sliding ring 60 is assembled in the rotating ring 50. That is, the guide pin 64 of the sliding ring 60 is aligned with the pin groove 28 of the housing 20, and the sliding ring 60 is moved in the axial direction. Thus, the guide pin 64 is inserted into the axial groove 54a of the guide groove 54 of the rotating ring 50 while being guided by the pin groove 28 of the housing 20, and the sliding ring 60 is inserted into the rotating ring 50 as shown in FIG. Assembled. Further, the engaging claw 63 of the sliding ring 60 is aligned with the bending recess 55 of the rotating ring 50, and is set in a state where it can be elastically deformed radially outward by cantilever.

  In FIG. 12, in order to assemble the retainer 70 to the housing 20 at the temporary fixing position, the retaining piece 76 of the retainer 70 is aligned with the insertion hole 36 of the housing 20 and the temporary fixing step 78 is aligned with the through hole 38. Further, the first engagement portion 33 and the second engagement portion 34 of the engagement arm 72 are aligned with the insertion groove 32a, and the retainer 70 is pushed downward. FIG. 13 is a perspective view showing a state in which the retainer 70 is assembled to the housing 20 at the temporary fixing position. Accordingly, as shown in FIG. 14, the retainer 70 is in a temporarily fixed position, that is, the retaining piece 76 is inserted into the insertion hole 36, and the first lock claw 73 of the engaging arm 72 is moved to the first engaging portion. The retainer 70 is retained from the housing 20 by being engaged with the housing 33. In this state, the ring presser 77 comes into contact with the ring main body 62 of the sliding ring 60, and the sliding ring 60 is prevented from being removed from the fourth connection hole 26d. At this time, as shown in FIG. 13, the temporary fixing stepped portion 78 hits the restriction protrusion 56 of the rotating ring 50, and the retainer 70 is restricted from moving downward from the temporary fixing position.

(3) -2 Connection work of the piping P The piping P is connected to the connector 10 by pushing the piping P into the sliding ring 60. In FIG. 15, the flange portion Pa of the pipe P is brought into contact with the claw portion 63b of the engagement claw 63, and the engagement claw 63 is bent in a cantilever state radially outward (in the direction of the bending recess 55). As shown in FIG. 16, the flange part Pa gets over the claw part 63b and pushes the pressing surface 62a with the flange part Pa. As a result, as shown in FIG. 17, the guide pin 64 inserted in the guide groove 54 of the rotating ring 50 pushes the inclined edge of the circumferential groove 54b after moving to the back side in the axial direction. The axial force of 60 rotates the rotating ring 50 to the sliding completion position. In this state, since the engaging claw 63 is disengaged from the position of the bending recess 55 (see FIG. 15) and hits the inner wall of the ring body 52, elastic deformation in the radially outward direction is restricted. The claw portion 63b engages with the flange portion Pa. By such rotation of the sliding ring 60 to the sliding completion position, the restricting projection 56 is retracted from the position of the temporary fixing step 78 of the retainer 70.

  Since the restricting projection 56 of the rotating ring 50 rotates and is retracted from the temporary fixing step 78, when the retainer operating portion 71 of the retainer 70 is pushed downward as shown in FIG. The retainer 70 moves to the detection position with respect to the housing 20 without hitting the restricting protrusion 56, and the second lock claw 74 engages with the second engagement portion 34, and the retainer 70 moves in the mounting direction. Is in a regulated unplugged state. Then, as shown in FIG. 18, the retaining piece 76 engages with the pipe P on the anti-insertion side of the flange portion Pa, that is, the front side in the retaining state of the retainer 70, and the pipe P is moved in the removal direction. It is regulated and is prevented from being removed from the housing 20 to complete the connection to the connector 10.

(3) -3 Removal operation of the pipe P To release the connection of the pipe P from the connector 10, first, the second lock claw 74 of the retainer 70 shown in FIG. 18 is removed from the second engagement portion 34 of the housing 20. Pull out the retainer 70. Next, if the pipe P is pulled to the front side in the axial direction, a process in FIG. 17 to FIG. 15, that is, a force in a direction in which the flange portion Pa is pulled out to the sliding ring 60 via the claw portion 63 b of the engagement claw 63 is applied. The sliding ring 60 moves to the front side in the axial direction. At this time, when the guide pin 64 moves in the guide groove 54, it pushes the groove edge of the circumferential groove 54 b, applies a rotating force to the rotating ring 50, and returns the rotating ring 50 to the initial rotation position. Furthermore, if the pulling-out operation of the pipe P is continued, the flange portion Pa is largely bent so that the engaging claw 63 enters the bending recess 55 and is detached from the engaging claw 63, and the pipe P is detached from the connector 10. Can do.

(4) Effects and effects of the embodiment The configuration of the above embodiment provides the following effects in addition to the effects described above.
(4) -1 As a configuration for holding the seal member 40, a rotating ring 50 is provided in addition to the sliding ring 60 that receives the axial force of the flange portion Pa of the pipe P. As shown in FIG. 1, the rotating ring 50 is rotatably fitted in the positioning recess 27 of the housing 20 by the annular protrusion 52 a, so that when the internal pressure is applied to the rotating ring 50, the rotating protrusion 50 a Apply pressure evenly. Therefore, the endurance of the rotating ring 50 is not lowered by receiving a force that causes the rotating ring 50 to tilt, and the end of the rotating ring 50 partially receives a large force.

(4) -2 As shown in FIGS. 13 and 18, as a configuration in which the retainer 70 restricts movement from the temporarily fixed position to the detection position, the temporary fixing step 78 of the retainer 70 is formed on the restriction protrusion 56 of the rotating ring 50. When the rotation ring 50 rotates to the rotation completion position, the interference is released and the retainer 70 can be moved to the detection position. Since the rotation ring 50 converts the amount of movement of the pipe P in the axial direction into a large amount of movement in the rotation direction by the cam mechanism, the interference area can be increased and the rigidity can be increased, so that the detection accuracy is improved. Durability can be improved.

(4) -3 In FIG. 5, when the retainer 70 is returned to the temporary fixing position and the pipe P is pulled out in the axial direction, the flange portion Pa is engaged with the engaging claw 63, and the sliding ring 60 is rotated by the rotating ring 50. Rotate to return to the original state. In addition, until the engaging claw 63 of the sliding ring 60 returns to the initial rotation position, the elastic deformation in the direction in which the engaging piece 63a of the engaging claw 63 abuts against the inner wall of the rotating ring 50 and the diameter is increased is restricted. Therefore, it does not come off from the flange part Pa and moves in the pulling direction integrally with the pipe P. Therefore, the sliding ring 60 and the rotating ring 50 can be reliably returned to the initial rotation position. That is, when the pipe P is pulled out during the connection work of the pipe P again, the sliding ring 60 rotates together with the pipe P and moves in the axial direction to return to the initial state. . Therefore, the work of taking out the sliding ring 60 and the rotating ring 50 from the housing 20 is simple, and the connection work again becomes easy.

  The present invention is not limited to the above-described embodiments, and can be implemented in various modes without departing from the scope of the invention.

DESCRIPTION OF SYMBOLS 10 ... Connector 20 ... Housing 22 ... Tube connection part 24 ... Pipe connection part 26 ... Connection hole 26a ... 1st connection hole 26b ... 2nd connection hole 26c ... 3rd connection hole 26d ... 4th connection hole 27 ... Positioning recess 28 ... Pin groove 29 ... Projection groove 30 ... Retainer mounting part 32, 31 ... Retainer guide part 32a ... Insertion groove 33 ... First engagement part 34 ... Second engagement part 36 ... Insertion hole 38 ... Through hole 40 ... Seal member DESCRIPTION OF SYMBOLS 50 ... Rotating ring 50P ... Ring accommodation hole 52 ... Ring main body 52a ... Annular protrusion 54 ... Guide groove 54a ... Axial groove 54b ... Circumferential groove 55 ... Deflection 56 ... Restriction protrusion 56a ... Restriction piece 56b ... Restriction step part 60 ... sliding ring 62 ... ring body 62a ... pressing surface 62b ... notch 63 ... engaging claw 63a ... engaging piece 63b ... claw part 64 ... guide pin 70 ... retainer 71 ... retainer Operation part 72 ... engaging arm 73 ... first lock claw 74 ... second lock claw 76 ... retaining piece 77 ... ring presser 78 ... temporary fastening step P ... piping Pa ... flange part Pb ... connection part Tb ... tube

Claims (4)

In a connector for connecting a pipe (P) having a flange portion (Pa) formed by an annular protrusion and a seal surface on the tip side of the flange portion (Pa),
A housing (20) for connecting the pipe (P) and having a connection hole (26) into which the pipe (P) is inserted in the axial direction;
A seal member (40) which is disposed in the connection hole (26) and seals the passage and the outside of the pipe (P) by being interposed between the seal surface and the inner wall surface of the connection hole (26). When,
A rotating ring (50) having an annular ring body (52) disposed in the connection hole (26) so as to be rotatable in a range from a rotation initial position to a rotation completion position and holding the sealing member (40);
A ring main body (62) supported so as to be movable in the axial direction on the inner peripheral side of the rotating ring (50), and the flange (Pa) protruding from both sides of the end of the ring main body (62) in the axial direction. ) A sliding ring (60) having an engaging claw (63) for engaging with
It is mounted on the housing (20), and moves from the temporary fixing position to the detection position in the direction perpendicular to the axial direction, thereby confirming that the connection of the pipe (P) to the normal connection position is completed. A retainer operating portion (71), and engaging arms (72) respectively protruding from both ends of the retainer operating portion (71) so as to surround a part of the outer peripheral surface of the housing (20), A retaining piece (76) that is formed on the inner side of the engaging arm (72), enters the connection hole (26), and engages with the flange portion (Pa) to retain the pipe (P). A retainer (70) having:
It is provided in cooperation with the housing (20), the rotating ring (50) and the sliding ring (60), and the sliding ring (60) receives the axial movement force of the pipe (P) so that the axial direction A cam mechanism that converts the rotating ring (50) into a force that rotates in the connection hole (26) by moving to
Provided in cooperation with the housing (20), the rotating ring (50), the sliding ring (60) and the retainer (70), and the rotating ring (50), the sliding ring (60) and the retainer (70). A regulation mechanism that regulates movement,
With
The regulatory mechanism is
When the rotating ring (50) is in the initial rotation position, the temporary fixing step (78) of the retainer (70) interferes with the restricting protrusion (56) of the rotating ring (50), whereby the retainer (70 ) Is restricted from moving from the temporary stop position to the detection position. On the other hand, when the rotating ring (50) is at the rotation completion position, the interference is released and the retainer (70) is moved to the detection position. A retainer movement restricting section that allows
Until the rotation ring (50) returns from the rotation completion position to the rotation initial position, elastic deformation is restricted so that the engagement claw (63) does not come off the flange portion (Pa), and the rotation ring (50) is moved to the rotation initial position. A return portion that allows elastic deformation so that the engagement claw (63) is disengaged from the flange portion (Pa) when returned;
Having a connector. The connector according to claim 1,
The cam mechanism is
A pressing surface (62a) that is formed on the ring body (62) and receives an axial force from the flange portion (Pa) when the pipe (P) is inserted;
The rotating ring (50) and the sliding ring (60) are provided with guide grooves and guide projections inclined with respect to the axial direction, and the pressing surface (62a) is pivoted from the flange portion (Pa) to the shaft. A connector configured to guide the rotating ring (50) to rotate within the connection hole (26) when subjected to a directional force. The connector according to claim 1 or 2,
The retainer restricting portion is formed on the engaging arm (72), and is engaged with the first locking claw (73) engaged with the housing (20) at the temporary fixing position, and the first locking claw (73) engaged with the housing (20) at the detection position. Connector with 2 locking claws (74). The connector according to any one of claims 1 to 3,
The rotating ring (50) includes an annular protrusion (52a) on the outer periphery of the ring body (52), and the annular protrusion (52a) is a positioning recess (formed on the inner wall of the connection hole (26) ( 27) A connector that can be rotated with respect to the housing (20) and is prevented from being pulled out in the axial direction by being press-fitted into 27).

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