WO2014175401A1

WO2014175401A1 - Connector

Info

Publication number: WO2014175401A1
Application number: PCT/JP2014/061629
Authority: WO
Inventors: 根津　幹夫
Original assignee: 株式会社ニフコ
Priority date: 2013-04-25
Filing date: 2014-04-24
Publication date: 2014-10-30
Also published as: JP6083869B2; JP2014224600A

Abstract

A connector is provided with a connector body, a lock member which is selectively movable between a lock position and a release position, and a ring member which is capable of selectively moving the lock member between the lock position and the release position. A pipe body is provided with a lock-receiving section with which a part of the lock member engages. The lock member is provided with: lock sections which are capable of engaging with the lock-receiving section; and a connection section which connects the lock sections to each other. The ring member has a cam section and is capable of being switched by the rotational operation of the ring member to a first position for positioning the lock sections at the release position and to a second position for positioning the lock member at the lock position at which the lock member is lifted and the lock sections are engaged with the lock-receiving section of the pipe body. Consequently, a partially fitted state or unintentional release is prevented to ensure the safety, and the structure is simplified to reduce the outer diameter.

Description

connector

This invention relates to a connector used for connection of fluid piping, and more particularly to a connector capable of preventing automobile piping or the like from falling into a half-fitted state or inadvertent release.

2. Description of the Related Art Conventionally, there is a connector having a configuration in which a lock position and a release position are switched by rotating a connector cover in which a connector body and a pipe body are attached to the connector body.
For example, a connector as shown in Patent Document 1 includes a lock member composed of a pair of pressing portions and a detachable member (claw portion) connected by a connecting plate around a mounting hole in which a connecting member (pipe body) is mounted. And a connector cover having a claw holding portion and a claw release portion on the outer periphery of the lock member and rotatably arranged.
In the locked position, the claw release portion formed on the inner periphery of the connector cover faces the pressing portion, and the claw holding portion and the claw portion face each other, and the protrusion formed on the claw portion protrudes in the inner diameter direction. To prevent the detachable member from coming off.
Further, at the release position, the claw holding part faces the pressing part, and the claw release part and the claw part face each other. That is, when the claw holding portion presses the pressing portion, the claw portions connected by the connecting plate move in the expanding direction, and the engagement between the protruding portion formed on the claw portion and the detachable member is released ( Patent Document 1).

JP 2010-236640 A

However, in the case of the conventional patent document 1, the structure of the lock member including the pressing portion, the detachable member (claw portion), and the connecting plate for connecting them is complicated, and the assembly work of the product is complicated. .
In addition, since the lock member has pressing portions at two opposing positions, the overall outer diameter is large, and is not particularly suitable for a connector for a large diameter.
Further, when an inadvertent external force is applied to the connector cover, there is a risk that the connector cover may be accidentally turned and unlocked, which is dangerous.
Furthermore, in the conventional structure, since the ring member can be rotated even when the pipe body is not completely inserted into the connector body, there is a possibility that the fastening cannot be surely performed.

The present invention was made to eliminate the above-mentioned disadvantages, and while preventing an increase in the outer diameter, it prevents half-fitting and erroneous release to ensure safety and improve assembly workability. A connector capable of achieving the above is provided.

To achieve the above object, the present invention provides a connector main body having an insertion hole through which a pipe body can be inserted and removed, a lock position attached to the connector main body and partially engaged with the pipe body, and the pipe body. A lock member that can be selectively moved between a release position where the engagement of the connector is released, and a rotation member that is rotatably attached to the outer periphery of the connector body, and the lock member is selectively moved to the lock position and the release position. A ring member, wherein the pipe body includes a locked portion that engages with a part of the lock member on an outer periphery, and the lock member is engaged with the locked portion. The ring member has at least one cam portion, and the cam portion is rotated by rotating the ring member. Lo A first position where the locking portion is positioned at a release position by pressing the connecting portion of the member, and the cam portion does not press the connecting portion, the locking member is raised and the locking portion is It can switch to the 2nd position located in the locked position engaged with the to-be-latched part.
In the connector according to the present invention, it is preferable that the connecting portion has a bent portion bent in the axial direction of the connector body, and the cam portion pushes down the bent portion as the ring member rotates. . If it carries out like this, a ring member and the locking part of a locking member can be arrange | positioned in a different position with respect to the axial direction of a connector main body, and it can prevent that a connector outer diameter increases.
In the connector according to the present invention, it is preferable that the ring member includes a cover portion that covers a free end of the lock member in a state where the lock member is moved to the lock position. If it carries out like this, the engagement state of a pipe body can be hold | maintained reliably, without locking member (locking part) projecting outward, and it is safe. In addition, since the pipe body cannot be inserted when the lock member is in the engaged position, it is possible to prevent the half-fitted state from occurring and improve safety.
In the connector according to the present invention, the ring member includes an engaging portion that engages with the connecting portion and restricts the rotation of the ring member in the releasing direction when the lock member is moved to the lock position. It is preferable. If it carries out like this, unintentional rotation of a ring member can be prevented, erroneous release can be prevented, and danger can be avoided.
In the connector according to the present invention, it is preferable that the ring member has a release operation portion that retracts the engagement portion in order to release the engagement between the engagement portion and the coupling portion. If it carries out like this, it cannot cancel even if it only turns a ring member, an accidental release operation can be prevented and danger can be avoided.
In the connector according to the present invention, it is preferable that the lock member is made of an elastic wire and is formed in a gate shape. If it carries out like this, it can provide cheaply, ensuring the intensity | strength of a locking member. Also, the processing of the lock member is easy.
In the connector according to the present invention, the pipe body has an engaging convex portion on an outer periphery, the connector main body includes an engaging concave portion capable of storing the engaging convex portion, and the ring member is attached to the connector main body. It is preferable that an anti-rotation member is provided at an opposing portion, and a part of the anti-rotation member falls into the engagement recess at the first position to prevent the rotation to the second position. In this case, the ring member cannot be turned unless the pipe body is completely inserted into the connector body, and uncertain fastening can be prevented.
In the connector according to the present invention, when the ring member is in the first position, a part of the rotation preventing member is inserted by inserting the engaging convex portion of the pipe body into the engaging concave portion of the connector main body. Is preferably disengaged from the engaging recess and can be turned to the second position. In this way, the ring member can be turned only when the pipe body is completely inserted into the connector body, and uncertain fastening can be prevented.

コネクタ According to the connector of the present invention, the lock member can be released and locked by at least one cam provided on the ring member, and the outer diameter of the product can be reduced even with a large diameter. Further, since the rotation operation of the ring member can be released and locked, the operation can be performed even in a narrow place. Furthermore, it is not necessary to release with a tool, and there is no risk of damaging the surroundings with the tool.

FIG. 1 is a perspective view showing a connector coupled state showing a first embodiment of the present invention. FIG. 2 is a perspective view showing a separated state of the connector. FIG. 3 is a plan view showing a coupling state of the connector. FIG. 4 is a side view showing a coupling state of the connector. 5 is a cross-sectional view taken along line AA in FIG. FIG. 6 is a cross-sectional view of a main part showing a separated state of the connector. 7 is a cross-sectional view taken along the line CC of FIG. FIG. 8 is a perspective view showing a locked state in which the pipe body of the connector is removed. 9 is a cross-sectional view taken along line BB in FIG. FIG. 10 is a perspective view showing a ring member used in the connector. FIG. 11 is a perspective view of the ring member viewed from another direction. FIG. 12 is a front view of the ring member. FIG. 13 is a front view showing a lock member used in the connector. FIG. 14 is a plan view showing the lock member. FIG. 15 is a side view showing the lock member. FIG. 16: is the perspective view which notched some which show the separation state of the connector which shows 2nd Embodiment of this invention. FIG. 17 is a plan view with a part cut away showing a state where the pipe body is inserted into the connector main body. FIG. 18 is a partially cutaway perspective view showing a state in which the pipe body is inserted into the connector main body. FIG. 19 is a perspective view with a part cut away showing a coupling state of the connector.

The connector according to the present invention includes a connector main body having an insertion hole through which a pipe body can be inserted and removed, a lock position attached to the connector main body, and a part of the pipe body engaging with the pipe body, and an engagement between the pipe body and the connector body. A lock member that is selectively movable between a release position to be released, and a ring member that is rotatably attached to the outer periphery of the connector main body, and that is capable of selectively moving the lock member to the lock position and the release position. The pipe body includes a locked portion that engages with a part of the lock member on an outer periphery, and the lock member is at least capable of engaging with the locked portion. The ring member includes at least one cam portion, and the cam portion is connected to the lock member by rotating the ring member. The first position where the lock portion is positioned at the release position by pressing down, the cam portion does not press the connecting portion, the lock member is raised, and the lock portion is the locked portion of the pipe body Therefore, it is possible to prevent half-fitting and inadvertent erroneous release operation and to prevent an increase in outer diameter.
Further, the pipe body has an engaging convex portion on an outer periphery, the connector main body includes an engaging concave portion that can be accommodated in the engaging convex portion, and the ring member is disposed at a portion facing the connector main body. A rotation preventing member is provided, and at the first position, a part of the rotation preventing member falls into the engagement recess, and the rotation to the second position is prevented to prevent uncertain fastening.

[First Embodiment]
Hereinafter, the present invention will be described in detail with reference to the drawings illustrating an embodiment. FIG. 1 is a perspective view showing a connected state of a connector showing an embodiment of the present invention, FIG. 2 is a perspective view showing a separated state of the connector of the present invention, and FIG. 3 is a plan view showing the connected state of the connector of the present invention. FIG. 4 is a side view showing a coupled state of the connectors. Here, the connector 10 includes a connector body 13 having an insertion hole 12 through which the pipe body 11 can be inserted and removed, a lock position attached to the connector body 13 and partially engaged with the pipe body 11, and the pipe body. 11 and a lock member 14 that is selectively movable between a release position where the engagement with the connector 11 is released, and is rotatably attached to the outer periphery of the connector main body 13. The lock member 14 is connected to the lock position and the release position. A ring member 15 that is selectively movable, and the pipe body 11 includes a locked portion 16 that engages with a part of the lock member 14 on the outer periphery, and the lock member 14 includes the locked portion. 16 includes at least a pair of lock portions 14a that can be engaged with each other and a connecting portion 14b that connects the lock portions 14a to each other, and the ring member 15 includes at least one cam portion 17. When the ring member 15 is turned, the cam portion 17 depresses the connecting portion 14b of the lock member 14 to place the lock portion 14 in the release position, and the cam portion 17 is the connecting portion. 14b can be switched to the second position where the lock member 14 is raised and the lock portion 14a is positioned at the lock position where the lock portion 14a is engaged with the locked portion 16 of the pipe body 11.

The pipe body 11 is made of, for example, synthetic resin, has a cylindrical shape, has a flange 11b at a base end to which a hose or the like is connected, and a locked portion 16 that is an annular groove on the outer periphery of a substantially intermediate portion. Is formed. Further, the free end 11a attached to the connector main body 13 is tapered. In the present embodiment, the locked portion 16 is formed in a groove shape, but may be formed in a stepped portion that can be engaged with the lock portion 14 a of the lock member 14.

The scissor connector body 13 has a hose connection part 13a to which a hose is connected at one end and an insertion hole 12 to which the pipe body 11 is attached at the other end. The connector body 13 is made of, for example, a synthetic resin. In addition, the outer periphery of the hose connection portion 13a has a plurality of annular irregularities for preventing the hose from coming off. In addition, a lock member guide wall 18 is formed on the left and right at the outer peripheral top of the expanded insertion hole 12 with a gap H in the center. The lock member guide wall 18 has a holding groove 19 that can hold the lock member 14 slidably. Further, a through hole 20 through which the lock portion 14 a of the lock member 14 held by the lock member guide wall 18 can pass is formed at the bottom of the holding groove 19 on the outer periphery of the connector main body 13 and is attached to the connector main body 13. It engages with a locked portion 16 formed on the outer periphery of the pipe body 11.

As shown in FIGS. 5 and 6, an O-ring 21, which is a seal member, is disposed in the inner circumferential groove at the back end of the insertion hole 12 of the connector main body 13, and is watertight and airtight with the pipe body 11 attached. The sex is secured. The seal member is not limited to the O-ring, and may be another seal member such as a V ring or an X ring. A ring member 15 is rotatably mounted on the outer periphery of the connector body 13 whose diameter is increased on the opposite side of the insertion hole 12 from the side on which the pipe body 11 is mounted. The ring member 15 has a leading end that abuts against the lock member guide wall 18 and a rear end that abuts against the flange 22 and is rotatably held.

A sliding surface 23 and a side wall 24 are formed on the outer periphery of the connector body 13 at symmetrical positions. When the free end 14c of the lock member 14 held in the lock member guide wall 18 comes into contact with the sliding surface 23 and the lock member 14 is lowered, the lock portion 14a is expanded to the left and right to engage the locked portion. 16 is released.
Further, the side wall 24 is formed so as to protrude short along the tangential direction of the outer periphery of the connector body 13, and a sliding surface 23 is formed behind the side wall 24. Therefore, it is possible to prevent an obstacle from coming into contact with the sliding surface 23 (free end 14c) from the front side. Further, as shown in FIGS. 1 and 7 to 8 and the like, the sliding surface 23 is formed as a convexly curved surface in the present embodiment.

As shown in FIGS. 10 to 12, the collar ring member 15 has a substantially annular shape as a whole, and is attached to the outer periphery of the connector body 13 so as to be rotatable. The ring member 15 includes a first cam portion 17 having a first cam surface 17a for pressing down a part of the connection portion 14b of the lock member 14 on the lower surface in the vicinity of the top portion, and a part of the connection portion 14b of the lock member 14 on the upper surface. It has the 2nd cam part 25 which has the 2nd cam surface 25a pushed up. The first cam surface 17a is formed in a downward concave shape, and the second cam surface 25a is formed in an upward convex shape. Further, the first cam portion 17 and the second cam portion 25 have a predetermined interval, at least an interval equal to or greater than the width interval h of the connecting portion 14 b of the lock member 14. Further, the ring member 15 includes

cover portions

26 and 27 that cover the outer periphery of the free end 14c of the lock member 14 in a state where the lock member 14 is moved to the lock position, and inadvertent external force is applied to the free ends 14c and 14c. This is prevented (see FIG. 9). Furthermore, openings 26a and 27a are formed on the same circumference as the

cover portions

26 and 27, and when the ring member 15 is in the release position, the free end 14c of the lock member 14 faces the cover portion 26 outward. , 27 so that it can be expanded (see FIG. 7).

Further, the ring member 15 includes an engaging portion 28 having a protrusion 28a adjacent to the second cam portion 25. When the lock member 14 is moved to the lock position, the connecting portion 14b and the protrusion 28a are engaged with each other. The rotation of the ring member 15 in the release direction is limited.
That is, the projection 28a is erected on the upper surface on the right side when viewed from the front of the engaging portion 28, and has an inclined surface on the left side, and the ring member 15 is placed on the right (locking direction) with respect to the connector body 13. When it rotates, as shown in FIG. 9, one side of the connection part 14b gets over the protrusion 28a, and is engaged.

In the above embodiment, the example in which the first cam portion 17 and the second cam portion 25 formed on the ring member 15 are separately provided has been described. However, the ring member 15 has a surface facing the lock member 14. A cam groove may be provided, and the connecting portion 14b may be loosely guided in the cam groove.
Even in this case, the lock member 14 can be raised and lowered to be locked and released by rotating the ring member 15.

The engaging portion 28 is formed on the free end side (front side) of the release operation portion 29 that is cantilevered and supported at one end on the outer periphery of the ring member 15. Therefore, by pressing the release operation part 29, the engaging part 28 can be lowered and the engagement with the connecting part 14b can be released. Further, as shown in FIG. 11, a plurality of enlarged grooves 30 are provided at the rear end of the ring member 15, and a locking piece 31 is provided in the groove 30 so as to be elastically deformable. Yes. A locking protrusion 31a having a wedge-shaped cross section is provided on the inner side of the distal end of the locking piece 31, and when the ring member 15 is attached to the connector main body 13, the flange 22 of the connector main body 13 as shown in FIG. Can be engaged with each other to provide a retaining action.

As shown in FIGS. 13 to 15, the lock member 14 extends linearly in a parallel state from a connecting portion 14 b formed in a substantially mountain shape with a horizontal center, and from both sides (both sides in the width direction) of the connecting portion 14 b. For example, the lock portion 14a is formed of a metal elastic wire that is bent so as to have a free end 14c bent at a right angle to the lock portion at the tip of the lock portion 14a. Further, the connecting portion 14 b is formed in a U shape that bulges in the axial direction of the connector main body 13. Further, the width of the connecting portion 14b is h, which is smaller than the central gap H of the lock member guide wall 18 formed in the connector main body 13, and is accommodated here. Further, the diameter of the lock portion 14 a is smaller than the width dimension of the holding groove 19. In addition, the lock member 14 accommodated in the holding groove 19 has a free end 14c that is expanded to the left and right along the sliding surface 23 as shown in FIG. It is always urged upward to return by elastic force.
Furthermore, the diameter of the lock portion 14 a is smaller than the width of the through hole 20 formed in the connector main body 13 and can pass through the through hole 20. The length dimension of the lock part 14a is formed longer than the length (height dimension) of the through hole 20. The lock member 14 may be a plate made of metal or synthetic resin. That is, the same effect can be obtained even if it is composed of an elongated plate material, without being limited to the wire material.

When assembling the connector 10 configured as described above, first, the lock member 14 is attached to the lock member guide wall 18 of the connector main body 13 from above. When the lock member 14 is inserted and released by opening the lock portion 14a left and right into the holding groove 19 of the lock member guide wall 18, the free end 14c reaches the top of the sliding surface 23 by the elastic force of the wire, The connecting portion 14b rises (see FIG. 9). In the present embodiment, the free end 14 c of the lock member 14 is attached toward the hose connection portion 13 a of the connector main body 13.
Further, the ring member 15 is attached to the connector body 13 from the direction of the hose connection portion 13a. The mounted ring member 15 is in contact with the locking member guide wall 18 on the front side, and is locked on the flange 22 by a locking projection 31 a provided on the inner side of the front end of the locking piece 31 on the back side. It is held rotatably (see FIG. 5).

When the pipe body 11 is engaged with the connector main body 13, first, as shown in FIGS. 2 and 6 to 7, the ring member 15 is first rotated in the releasing direction, and the first cam surface 17a of the first cam portion 17 is rotated. Then, the connecting portion 14b is pushed down, and the locking portion 14a of the locking member 14 is opened to the left and right to be retracted from the through hole 20 (first position). At this time, since the free end 14c is not located at the positions of the

cover portions

26 and 27 but at the positions of the openings 26a and 27a, it can be opened left and right along the sliding surface 23 as shown in FIG. When the pipe body 11 is mounted from the insertion hole 12 in this state, the O-ring 21 is positioned between the outer periphery of the tip end portion of the pipe body 11 and the inner periphery of the insertion hole 12 of the connector body 13 as shown in FIG. As a result, watertightness and airtightness can be maintained.
In this way, when the ring member 15 is in the locked state, as shown in FIG. 8, the lock portion 14a becomes an obstacle, and the pipe body 11 cannot be inserted, and the pipe body 11 can be locked unless it is inserted all the way. Can not. Therefore, a half-fitted state can be prevented.
Next, when the ring member 15 is rotated in the locking direction, as shown in FIGS. 1, 5, 8, and 9, the locking member 14 reaches the top of the sliding surface 23 due to the elastic force of the wire, and is connected. The part 14b rises (second position). Moreover, the ring member 15 has the 2nd cam part 25 adjacent to the 1st cam part 17, and the 2nd cam surface 25a forcibly raises the connection part 14b. At this time, the lock portion 14 a of the lock member 14 advances from the through hole 20 to reach the insertion hole 12 and engages with the locked portion 16 of the pipe body 11. When the ring member 15 is further rotated in the locking direction, the connecting portion 14b is engaged with the protrusion 28a of the engaging portion 28 as shown in FIGS. The locked state of the member 14 is maintained. Moreover, since the free end 14c is surrounded by the

cover portions

26 and 27 of the ring member 15, it is possible to prevent deformation due to unintended external force and to maintain the locked state reliably.

When releasing the engagement between the pipe body 11 and the connector main body 13, first, the release operation portion 29 is pushed from above to lower the projection 28a to release the engagement with the connecting portion 14b, and then the ring member 15 is moved in the release direction. This is a two-stage release method that rotates. By pushing the release operation portion 29 from above, the protrusion 28a formed at the free end is lowered and the engagement with the connecting portion 14b is released. When the ring member 15 is rotated while pushing the release operation portion 29, the connecting portion 14b is positioned between the second cam portion 25 and the first cam portion 17, and one side end of the connecting portion 14b is the second cam. The lower side abuts on the second cam surface 25 a of the portion 25, and the other side end abuts on the first cam surface 17 a of the first cam portion 17.
Therefore, since the lower end of the connecting portion 14b is in contact with the second cam portion 25 while being pushed down by the first cam portion 17, the connecting portion 14b does not descend at a stretch, and there is no possibility that the lock is suddenly released. When the lock member 14 is lowered, the lock portion 14a is expanded, disengaged from the locked portion 16 of the pipe body 11 (first position), the engagement is released, and the pipe body 11 can be pulled out (FIG. 2, 6, 7).
As described above, in the present invention, not only the connector body 13 is simply turned, but also the release operation portion 29 is pushed down, and after the engagement between the projection 28a and the connection portion 14b is released, the rotation operation becomes possible. Therefore, it is possible to prevent safety from being released and secure safety, and the outer diameter does not become larger than necessary, and it can be locked and released even in a narrow place.

16 is a perspective view with a part cut away showing a separated state of a connector showing a second embodiment of the present invention, and FIG. 17 is a plan view with a part cut away showing a state in which a pipe body is inserted into the connector body. is there. In this embodiment, the pipe body 41 has a cylindrical shape and has a flange 41b to which a hose or the like is connected, and a locked portion 42 that is an annular groove is formed on the outer periphery of a substantially intermediate portion. Further, the pipe body 41 is formed with an engaging convex portion 44 on the outer periphery thereof facing the axial direction so as to be orthogonal to the locked portion 42. The engaging convex portion 44 can be stored in an engaging concave portion 45 formed in the connector main body 43.

The hook connector body 43 is formed with an engagement recess 45 facing the inner wall of the insertion hole 12, and the engagement recess 45 is provided with a communication hole 46 communicating with the outer wall. The other parts of the connector main body 43 are the same as those in the first embodiment, and thus the same reference numerals are given and the description thereof is omitted.

The collar ring member 47 is provided with a rotation preventing member 48 at an inner portion facing the connector main body 43 as shown in FIG. The rotation preventing member 48 has a plate shape having a curved elasticity along the inner periphery of the ring member 47, and a protrusion 48 a that falls into the communication hole 46 is formed at the tip, and is fixed in a cantilever shape. Yes. Therefore, in a state where the pipe body 41 is not inserted into the connector main body 43, the ring member 47 cannot be rotated in the locking direction. Since the other parts of the ring member 47 are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

The operation procedure of the connector 40 configured as described above will be described. First, as shown in FIG. 16, when the pipe body 41 and the connector main body 43 are in the separated state, the ring member 47 is in the release position, the lock member 14 opens to the left and right, and retracts from the through hole 20. (First position). Further, a protrusion 48 a formed at the tip of the rotation preventing member 48 falls into the communication hole 46 of the engaging recess 45. Therefore, the ring member 47 cannot be rotated in the locking direction.

Next, as shown in FIGS. 17 and 18, the pipe body 41 is inserted into the connector main body 43 with the position of the engaging convex portion 44 being aligned. Then, the engaging convex portion 44 enters the engaging concave portion 45 of the connector main body 43, and the protrusion 48 a of the rotation preventing member 48 is pushed out from the communication hole 46 of the engaging concave portion 45. In this state, when the ring member 47 is rotated in the direction of arrow K as shown in FIG. 19, the free end 14c of the lock member 14 reaches the top of the sliding surface 23 by the elastic force of the wire, as in the first embodiment. As the connecting portion 14b rises, the lock portion 14a advances from the through hole 20 and reaches the insertion hole 12, and engages with the locked portion 42 of the pipe body 41 to be locked (second position). ).

As described above, in the present embodiment, if the pipe body 41 is not correctly inserted into the connector main body 43, the ring member 47 cannot be rotated, and the uncertain fastening of the connector can be prevented in advance.

Although the example in which the shape of the sliding surface 23 is a curved surface that is convex upward has been described, a shape in which the curvature of the curved surface or curved surface that is concave in the plane and upward may be changed.

The connector of the present invention can be used as a connector for large-diameter pipes for piping of radiators, intake pipes (around the throttle valve), intercoolers, battery packs, etc. of construction machines.
Japanese Patent Application No. 2013-91964 filed on April 25, 2013 and Japanese Patent Application No. 2013-216221 filed on October 17, 2013, claims, drawings and abstract Is hereby incorporated by reference as a disclosure of the specification of the present invention.

Claims

A connector main body provided with an insertion hole through which the pipe body can be inserted and removed, a lock position attached to the connector main body and partially engaged with the pipe body, and a release position where the engagement with the pipe body is released A lock member that can be selectively moved between the ring member and a ring member that is rotatably attached to the outer periphery of the connector body and that can selectively move the lock member to a lock position and a release position. There,
The pipe body includes a locked portion that engages with a part of a lock member on an outer periphery, and the lock member includes at least a pair of lock portions that can be engaged with the locked portion, and the lock portion. The ring member includes at least one cam portion, and the lock portion is configured so that the cam portion depresses the connection portion of the lock member by rotating the ring member. In the release position, and in the lock position where the cam member does not press the connecting portion, the lock member is raised and the lock portion is engaged with the locked portion of the pipe body. A connector that can be switched to a second position.
2. The connecting portion according to claim 1, wherein the connecting portion has a bent portion bent in the axial direction of the connector body, and the cam portion pushes down the bent portion as the ring member is rotated. The connector described.
The connector according to claim 1, wherein the ring member includes a cover portion that covers a free end of the lock member when the lock member is moved to the lock position.
The ring member includes an engaging portion that engages with the connecting portion and restricts rotation of the ring member in a releasing direction when the lock member is moved to a lock position. Item 4. The connector according to any one of Items 1 to 3.
The ring member according to any one of claims 1 to 4, wherein the ring member has a release operation portion that retracts the engagement portion in order to release the engagement between the engagement portion and the connection portion. connector.
The connector according to any one of claims 1 to 5, wherein the lock member is made of an elastic wire and has a gate shape.
The pipe body has an engaging convex portion on an outer periphery, the connector body includes an engaging concave portion that can be accommodated in the engaging convex portion, and the ring member rotates to a portion facing the connector main body. 7. A preventive member, wherein at the first position, a part of the rotation preventive member falls into the engagement recess and prevents the rotation to the second position. Connector described in.
When the ring member is in the first position, the engagement protrusion of the pipe body is inserted into the engagement recess of the connector body, so that a part of the rotation preventing member is engaged with the engagement recess. 8. The connector according to claim 7, wherein the connector can be detached and rotated to the second position.