JP6284075B2 - connector - Google Patents

Description

  The present invention relates to a connector that is used for connecting a pipe such as a fuel pipe and has a check function for confirming from outside whether or not the pipe is completely connected.

  As a connector having the above check function, for example, there is a connector described in Patent Document 1. The connector described in Patent Document 1 includes a connector main body 10, a holder 30, a checker 50, and a retainer 70 (see FIGS. 1, 4, 5, 8 to 14, etc. of Patent Document 1). Here, the retainer 70 provided in this connector is operated before the pipe P is inserted into the connector body 10 to the normal depth by engaging the lock claw 73 of the retainer 70 with the checker main portion 51 of the checker 50. When the pipe P is inserted into the connector body 10 to a normal depth, the checker 50 is pushed in the axial direction by the bulge part Pv of the pipe P, and the engagement of the lock claw 73 with the checker main part 51 is released. This makes it possible to move to the post-operation position.

Japanese Patent No. 4214454

  However, in the connector of Patent Document 1, the holder 30, the checker 50, and the retainer 70 are fitted on the outer peripheral surface of the connector body 10 in a triple manner, and the mutual engagement relationship is complicated. There is a problem that is bad.

  Further, the connection work with the pipe P (pipe) is usually performed in a limited space in a state where many parts are arranged around the connector. However, since the connector disclosed in Patent Document 1 is configured to grip the retainer 70 from the side of the connector body 10 and move it axially forward, the retainer 70 is gripped and moved around the connector body 10. Space is required and connection work with pipes is poor.

  The present invention has been made in view of the above circumstances, and the purpose of the present invention is to make sure that the pipe connection is complete, which can improve the assembly of the connector components and the connection workability with the pipe. It is to provide a connector having a check function for confirming whether or not from the outside.

The present invention relates to a connector that is connected to a pipe having an annular protrusion on an outer periphery of an end, the connector main body having a pipe insertion hole into which the pipe is inserted, and one end side of the connector main body. And having an opening that is fitted to the outer surface of the connector body and communicates with the pipe insertion hole, and moves in the axial direction of the pipe insertion hole between a temporary fixing position on one end side and a locking position on the other end side. And possible checkers. The connector main body has a temporary fixing groove provided on an outer surface, and the checker extends toward the other end side and is elastically deformable in the radial direction of the opening, and the other of the detection legs. The connector protrudes from the end toward the connector main body, and is inserted into the connector main body to a normal depth at the temporary fixing position before the pipe is inserted into the temporary fixing groove, and from the middle of the detection leg to the connector. And a protrusion protruding toward the main body. The protrusion is moved radially outward of the opening by the annular protrusion when the pipe is inserted to a normal depth in the connector main body at the temporary fixing position. The opening is moved radially outward from the temporary fixing groove, and the checker is movable from the temporary fixing position toward the locked position by removing the claw portion from the temporary fixing groove. Do Ri, the connector body, when the pipe to the connector body is inserted to a proper depth, it has a retaining pawl which is opposed to one end surface of the annular projection, the checker, provided on one end side A lock piece protruding to the other end side, and when the checker is moved from the temporary fixing position to the lock position, the lock piece is positioned outside the retaining pawl in the radial direction of the pipe insertion hole. In Rukoto, the retaining pawl can not be moved radially outwardly of the pipe insertion hole.

  According to the present invention, when the pipe is inserted into the connector main body to the normal depth, the checker can be moved. Therefore, if the insertion depth of the pipe is shallower than the normal depth, the checker cannot be moved, so it can be checked by moving the checker whether the pipe has been inserted reliably. Further, until the pipe is inserted into the connector body to the normal depth at the temporary fixing position, the claw portion is fitted in the temporary fixing groove, so that the checker cannot move. Then, when the pipe is inserted into the connector main body to the normal depth at the temporary fixing position, the claw portion is moved radially outward of the opening and is removed from the temporary fixing groove, so that the checker can be moved. Accordingly, the checker can be temporarily fixed until the pipe is inserted into the connector main body at the temporary fixing position.

  And since it is the structure which fits a checker to the outer surface of a connector main body, a mutual engagement relationship is simple. Therefore, it is possible to easily assemble the component parts of the connector. In addition, since the checker is pushed and moved rearward in the axial direction of the pipe insertion hole, little space is required for gripping and moving the checker around the connector body. Therefore, the connection work with the pipe can be suitably performed even in a limited space. Thereby, the assembly property of the component of a connector and the connection workability | operativity with a pipe can be improved.

It is a perspective view of the connector concerning one embodiment of the present invention. It is a side view of the connector main body shown in FIG. FIG. 3 is a single item diagram of the connector base shown in FIG. 2. It is a single item figure of the bush shown in FIG. It is a single item figure of the retainer shown in FIG. It is a single-piece figure of the checker shown in FIG. It is AA sectional drawing of FIG.6 (b), BB sectional drawing, and CC sectional drawing. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

(Connector configuration)
As shown in FIG. 1, a connector 100 according to an embodiment of the present invention includes a connector body 1 and a checker 2. The connector 100 is a pipe joint used for pipe connection such as fuel pipe.

<Connector body>
The connector main body 1 will be described with reference to FIGS. The connector main body 1 is a main component of the connector 100 and includes a pipe insertion portion 4 and a hose connection portion 5 extending from the pipe insertion portion 4 as shown in FIG. In the connector main body 1 of this embodiment, the pipe insertion part 4 and the hose connection part 5 are arranged on one axis. In addition, the relationship between the axial direction of the pipe insertion part 4 and the axial direction of the hose connection part 5 is not limited on one axis | shaft, For example, the connector main body 1 may be L-shaped. That is, you may arrange | position so that the axial direction of the pipe insertion part 4 and the axial direction of the hose connection part 5 may orthogonally cross. A fluid passage (not shown) is formed through the connector body 1 so as to penetrate therethrough. The material of the connector body 1 is, for example, resin.

  The pipe insertion portion 4 has a columnar shape, and a pipe insertion hole 11 into which the pipe 50 is inserted is provided on the front surface thereof. Here, the diameter of the pipe insertion hole 11 is slightly larger than the diameter of the pipe 50. A hose (not shown) is extrapolated to the hose connection portion 5. Hereinafter, the side where the pipe insertion hole 11 is provided is referred to as one end side, and the side where the hose connection portion 5 is provided is referred to as the other end side. The pipe 50 is inserted into the pipe insertion portion 4 from the one end side toward the other end side.

  Here, the pipe 50 is made of a metal such as aluminum or a synthetic resin, and as shown in FIG. 1, a spool portion (annular convex portion) 51 is provided on the outer periphery of the end portion.

  Although not shown, a seal member such as an O-ring is placed in the pipe insertion portion 4. Therefore, a seal member such as an O-ring is positioned between the tip of the pipe 50 inserted into the pipe insertion portion 4 and the outer wall of the pipe insertion portion 4. This seal member prevents liquid such as fuel from leaking.

  As shown in FIG. 2 which is a side view, the connector main body 1 includes a connector base 12, a bush 13, and a retainer 14. Hereinafter, the connector base 12, the bush 13, and the retainer 14 will be described in order. The connector base 12 and the retainer 14 may be integrated.

<Connector base>
As shown in FIG. 3 which is a side view and a front view, the connector base 12 has a connection port 15 provided at one end to which a bush 13 is connected. On the outer side in the radial direction of the connection port 15, two concave portions 16 into which convex portions 24 described later of the bush 13 are fitted are provided at intervals of 180 ° in the circumferential direction. The center of the connection port 15 coincides with the center of the pipe insertion hole 11.

  The connector base 12 has an accommodation hole 17 that is provided on the other end side than the connection port 15, communicates with the pipe insertion hole 11, and accommodates the tip of the pipe 50 inserted from the pipe insertion hole 11. Yes. The diameter of the receiving hole 17 is slightly larger than the diameter of the pipe 50 and smaller than the diameter of the spool portion 51. Further, the center of the accommodation hole 17 coincides with the center of the pipe insertion hole 11.

  In addition, the connector base 12 has a temporary fixing groove 18 provided on the outer surface of the pipe insertion portion 4 and a lock groove 19 provided on the outer surface of the pipe insertion portion 4 on the other end side of the temporary fixing groove 18. doing. Two temporary fixing grooves 18 and two locking grooves 19 are provided at intervals of 180 ° in the circumferential direction of the connection port 15. Until the pipe 50 is inserted into the pipe insertion portion 4 to the normal depth after the checker 2 is positioned at the temporary fixing position, a later-described claw portion 44 of the checker 2 fits into the temporary fixing groove 18 and the checker 2 is positioned at the locked position. When this occurs, the claw portion 44 fits into the lock groove 19. The checker 2 is temporarily fixed by fitting the claw portion 44 into the temporary fixing groove 18. Further, the movement of the checker 2 is locked by fitting the claw portion 44 into the lock groove 19.

  The connector base 12 includes a second temporary fixing groove 20 provided on the outer surface of the pipe insertion portion 4 and a second lock provided on the outer surface of the pipe insertion portion 4 on the other end side of the second temporary fixing groove 20. A groove 21 and an inclined surface 22 that inclines radially outward of the connection port 15 (pipe insertion hole 11) from the second temporary fixing groove 20 toward the second lock groove 21. Two second temporary fixing grooves 20 and two second locking grooves 21 are provided in the circumferential direction of the connection port 15 at intervals of 180 °. Here, the position of the second temporary fixing groove 20 and the temporary fixing groove 18 are different in the circumferential direction of the connection port 15 (pipe insertion hole 11). Therefore, the positions of the second lock groove 21 and the lock groove 19 are different in the circumferential direction of the connection port 15 (pipe insertion hole 11). When the checker 2 is positioned at the temporary fixing position, a locking claw 48 (to be described later) of the checker 2 is fitted into the second temporary fixing groove 20, and when the checker 2 is positioned at the locked position, the locking claw 48 is 2 will fit into the lock groove 21. The checker 2 is not pulled out to one end side by fitting the locking claw 48 into the second temporary fixing groove 20. Moreover, the movement of the checker 2 is locked by fitting the latching claw 48 into the second lock groove 21.

  Here, the locking claw 48 fitted into the second temporary fixing groove 20 can slide on the inclined surface 22 and move to the other end side. When the checker 2 located at the temporary fixing position is moved toward the locking position, the locking claw 48 moves from the second temporary fixing groove 20 to the second locking groove 21 by sliding on the inclined surface 22. It becomes.

  Further, the connector base 12 has a connection groove 23 provided on the outer surface of the pipe insertion portion 4. Two connection grooves 23 are provided in the circumferential direction of the connection port 15 at intervals of 180 °. Here, the position of the connection groove 23, the temporary fixing groove 18, and the second temporary fixing groove 20 are different in the circumferential direction of the connection port 15 (pipe insertion hole 11). A connecting claw 33 (described later) of the retainer 14 is fitted into the connecting groove 23.

<Bush>
As shown in FIG. 4 which is a side view and a front view, the bush 13 is cylindrical and has a pipe insertion hole 11 at one end. Two protrusions 24 that fit into the recesses 16 of the connector base 12 are provided on the side surface of the bush 13 at intervals of 180 ° in the circumferential direction. When the connector body 1 is assembled, an O-ring (not shown) is inserted into the connector base 12 from the connection port 15 of the connector base 12, and then the protrusion 24 is fitted into the concave portion 16 of the connector base 12, and the connector base 12 is bushed. 13 is connected. By fitting the convex portion 24 into the concave portion 16, the bush 13 is positioned with respect to the connector base 12.

  Further, the bush 13 has two cutout portions 25 cut out from one end to the other end side at intervals of 180 ° in the circumferential direction. When the checker 2 is positioned at the lock position, a later-described protrusion 45 of the checker 2 is positioned inside the notch 25.

  The bush 13 has a contact wall 26 provided around the pipe insertion hole 11. When the pipe is inserted into the pipe insertion portion 4 to a normal depth, the surface 51a (see FIG. 1) on the other end side of the spool portion 51 comes into contact with the contact wall 26.

<Retainer>
As shown in FIG. 5 which is a top view, a side view, and a front view, the retainer 14 has a ring-shaped retainer main body 28 with a through-hole 27 opening in the center. The center of the through hole 27 coincides with the center of the pipe insertion hole 11, and the bush 13 passes through this through hole 27. Two concave portions 29 into which the convex portions 24 of the bush 13 are fitted are provided at intervals of 180 ° in the circumferential direction outside the through-hole 27 in the radial direction. By fitting the convex portion 24 into the concave portion 29, the retainer 14 is positioned with respect to the bush 13 and consequently with respect to the connector base portion 12.

  Further, the retainer 14 has a retaining leg 30 provided on a surface on one end side of the retainer body 28 on the outer side in the radial direction of the through hole 27. Two retaining legs 30 are provided at intervals of 180 ° in the circumferential direction of the through hole 27. The retaining leg 30 is formed integrally with the retainer main body 28, extends toward one end side, and is elastically deformable in the radial direction of the through hole 27 (pipe insertion hole 11).

  The retainer 14 also has a retaining claw 31 that protrudes from one end of the retaining leg 30 toward the center of the through hole 27 (pipe insertion hole 11). When the pipe 50 is inserted to the normal depth in the pipe insertion portion 4, the retaining pawl 31 faces the surface 51 b (see FIG. 1) on one end side of the spool portion 51.

  Further, the retainer 14 has a connection leg 32 provided on the other end side surface of the retainer main body 28 on the outer side in the radial direction of the through hole 27. Two connecting legs 32 are provided at intervals of 180 ° in the circumferential direction of the through hole 27. The connection leg 32 is formed integrally with the retainer body 28 and extends toward the other end side.

  The retainer 14 has a connection claw 33 that protrudes from the other end of the connection leg 32 toward the center of the through hole 27. The connection claw 33 is fitted into the connection groove 23 of the connector base 12.

<Checker>
Next, the checker 2 will be described with reference to FIGS. The checker 2 is a part having a role of confirming from outside whether or not the pipe 50 is completely connected to the connector main body 1, and as shown in FIG. An opening 41 that is fitted to the outer surface of the insertion portion 4 and communicates with the pipe insertion hole 11 is provided. The checker 2 is movable in the axial direction of the pipe insertion hole 11 between a temporary fixing position on one end side and a lock position on the other end side. The material of the checker 2 is, for example, resin or metal.

  As shown in FIG. 6 which is a side view and a front view, the checker 2 has a ring-shaped wall portion 42 in which an opening 41 communicating with the pipe insertion hole 11 is provided at the center. Here, the diameter of the opening portion 41 is slightly larger than the diameter of the spool portion 51.

  Further, as shown in FIG. 7B, which is a BB cross-sectional view of FIG. 6B, the checker 2 is a detection leg 43 that extends from the other end surface of the wall portion 42 toward the other end side. have. The detection legs 43 are formed integrally with the wall portion 42, and two detection legs 43 are provided at intervals of 180 ° in the circumferential direction of the opening 41. Then, the width along the circumferential direction of the opening 41 is reduced to about 1/18 of the outer circumference of the wall portion 42 to reduce the rigidity, so that the opening 41 can be elastically deformed in the radial direction.

  Further, the checker 2 has a claw portion 44 that protrudes from the other end of the detection leg 43 toward the pipe insertion portion 4. The claw portion 44 fits into the temporary fastening groove 18 until the pipe 50 is inserted to the normal depth in the pipe insertion portion 4 at the temporary fastening position, while fitting into the locking groove 19 at the locked position.

  Further, the checker 2 has a protrusion 45 that protrudes from the middle of the detection leg 43 toward the pipe insertion portion 4. When the pipe 50 is inserted into the pipe insertion portion 4 to the normal depth at the temporary fixing position, the projection 45 is moved outward in the radial direction of the opening 41 by the spool portion 51. The opening 41 is moved outward in the radial direction. When the claw portion 44 is moved outward in the radial direction of the opening 41 and is disengaged from the temporary fixing groove 18, the checker 2 can be moved from the temporary fixing position toward the lock position.

  Further, the checker 2 is provided on one end side as shown in FIG. 7A which is a cross-sectional view taken along the line AA of FIG. 6B, and the other end side of the wall 42 on the other end side. The locking piece 46 protrudes into the area. The lock pieces 46 are formed integrally with the wall portion 42, and are provided at intervals of 180 ° in the circumferential direction of the opening 41 at positions different from the detection legs 43 in the circumferential direction of the opening 41. . When the checker 2 is positioned at the lock position, the lock piece 46 is positioned outside the retaining pawl 31 in the radial direction of the opening 41 (pipe insertion hole 11). As a result, the retaining pawl 31 cannot move radially outward of the pipe insertion hole 11.

  Further, as shown in FIG. 7C, which is a cross-sectional view taken along the line CC of FIG. 6B, the checker 2 is a locking leg extending from the other end surface of the wall portion 42 toward the other end side. 47. The locking legs 47 are formed integrally with the wall portion 42, and are arranged at intervals of 180 ° in the circumferential direction of the opening 41 at positions different from the detection legs 43 and the locking pieces 46 in the circumferential direction of the opening 41. One is provided. And the width along the circumferential direction of the opening 41 is made about 1/9 of the outer circumference of the wall 42, so that it is wider than the width of the detection leg 43 and slightly in the radial direction of the opening 41. It is made elastically deformable.

  The checker 2 also has a locking claw 48 that protrudes from the other end of the locking leg 47 toward the pipe insertion portion 4. The locking claw 48 is fitted into the second temporary fixing groove 20 at the temporary fixing position, and is fitted into the second locking groove 21 at the locked position. The locking claw 48 moves from the second temporary fixing groove 20 to the second locking groove 21 by sliding on the inclined surface 22 as the checker 2 is moved from the temporary fixing position toward the locking position. Will be.

(Movement of each component of the connector when connecting a pipe to the connector)
Next, FIG. 8 which is AA sectional view of FIG. 1, FIG. 9 which is BB sectional view of FIG. 1, and FIG. 10 which is CC sectional view of FIG. The movement of each component of the connector 100 when connecting the pipe 50 will be described. 1 corresponds to the AA cross section of FIG. 6B, and the BB cross section of FIG. 1 corresponds to the BB cross section of FIG. 6B. The CC cross section in FIG. 1 corresponds to the CC cross section in FIG.

<Before pipe insertion>
Before the pipe 50 is inserted into the pipe insertion portion 4, as shown in FIG. 9A, the checker 2 is located at the temporary fixing position, and the claw portion 44 of the checker 2 is inserted into the temporary fixing groove 18. It fits. Further, as shown in FIG. 10A, the locking claw 48 of the checker 2 is fitted in the second temporary fixing groove 20. Since the checker 2 cannot move while the claw portion 44 is fitted in the temporary fixing groove 18, the checker 2 is temporarily fixed until the pipe 50 is inserted into the pipe insertion portion 4 to the normal depth at the temporary fixing position. be able to.

<Pipe insertion>
The pipe 50 is inserted into the pipe insertion portion 4 from the pipe insertion hole 11 in a state where the checker 2 is located at the temporary fixing position. When the insertion depth of the pipe 50 reaches the normal depth, the surface 51a on the other end side of the spool portion 51 abuts against the abutment wall 26, as shown in FIG. Stopped. Further, the retaining claw 31 faces the surface 51 b on one end side of the spool portion 51.

  Further, as shown in FIG. 9B, the detection leg 43 is elastically deformed by the spool portion 51 coming into contact with the protrusion 45 and moving the protrusion 45 outward in the radial direction of the opening 41. The claw portion 44 moves outward in the radial direction of the opening portion 41 and comes off the temporary fixing groove 18. Thereby, the checker 2 can be moved to the lock position.

  In this way, when the pipe 50 is inserted into the pipe insertion portion 4 to the normal depth at the temporary fixing position, the checker 2 can be moved. Therefore, if the insertion depth of the pipe 50 is shallower than the normal depth, the checker 2 cannot be moved. Therefore, it is possible to check whether the pipe 50 has been inserted to the normal depth by moving the checker 2. it can.

  From this state, as shown in FIG. 9C, the checker 2 is moved to the lock position. When the checker 2 is moved to the locked position, as shown in FIG. 8C, the locking piece 46 is positioned outside the retaining claw 31 in the radial direction of the pipe insertion hole 11, so that the retaining claw 31 is moved to the pipe insertion hole. 11 cannot move outward in the radial direction. Thereby, since the opposing state of the surface 51b of the one end side of the spool part 51 and the retaining claw 31 is maintained, the pipe 50 can be prevented from being removed from the pipe insertion part 4.

  When the checker 2 is moved to the lock position, the claw portion 44 fits into the lock groove 19 as shown in FIG. Further, as shown in FIG. 10C, the locking claw 48 is fitted into the second lock groove 21. Thereby, since the movement of the checker 2 is locked, the pipe 50 can be held in the pipe insertion portion 4 in a state of being prevented from coming off.

  Here, as described above, since the width of the detection leg 43 is narrow, in the configuration in which the checker 2 is locked only by the claw part 44 at the tip of the detection leg 43, the checker 2 is unstable with respect to the pipe insertion part 4. Become. Therefore, a locking leg 47 is provided separately from the detection leg 43, and the locking claw 48 protruding from the tip of the locking leg 47 is also configured to lock the checker 2. Thereby, the checker 2 can be stabilized with respect to the pipe insertion part 4. FIG.

  Further, the locking claw 48 moves from the second temporary fixing groove 20 to the second lock groove 21 by sliding on the inclined surface 22. At this time, since the locking leg 47 only needs to be slightly elastically deformed in the radial direction of the opening 41, it is not necessary to lower the rigidity of the locking leg 47, and the width of the locking leg 47 is made larger than the width of the detection leg 43. Can be wide. Thereby, the checker 2 can be more stabilized with respect to the pipe insertion part 4. FIG.

  Here, since the connector 100 of this embodiment is the structure which fits the checker 2 in the outer surface of the pipe insertion part 4, mutual engagement relationship is simple. Therefore, the components of the connector 100 can be easily assembled. Further, since the checker 2 is configured to be pushed and moved rearward in the axial direction of the pipe insertion hole 11, little space is required for gripping and moving the checker 2 around the pipe insertion portion 4. Therefore, the connection work with the pipe 50 can be suitably performed even in a limited space. Thereby, the assembly property of each component of the connector 100 and the connection workability with the pipe 50 can be improved.

  When removing the pipe 50 from the pipe insertion portion 4 due to maintenance or the like, a tool or the like is inserted into the lock groove 19 to remove the claw portion 44 from the lock groove 19 and a tool or the like is inserted into the second lock groove 21. Then, the locking claw 48 is removed from the second lock groove 21. When the checker 2 is moved to the temporary fixing position, the claw portion 44 fits into the temporary fastening groove 18 and the locking claw 48 fits into the second temporary fastening groove 20. Thereby, the checker 2 is temporarily fixed. In the state where the checker 2 is temporarily fixed (temporary fixing position), as shown in FIG. 8B, the lock piece 46 is separated from the retaining leg 30, and the retaining claw 31 has a diameter of the pipe insertion hole 11. Since it becomes possible to move outward in the direction, the pipe 50 can be pulled out from the pipe insertion portion 4.

(Action / Effect)
As can be seen from the description of the configuration of the connector 100 according to the embodiment of the present invention and the movement of each component, according to the present invention, when the pipe 50 is inserted into the pipe insertion portion 4 to the normal depth at the temporary fixing position. The checker 2 can be moved. Therefore, if the insertion depth of the pipe 50 is shallower than the normal depth, the checker 2 cannot be moved. Therefore, it is possible to check whether the pipe 50 has been inserted to the normal depth by moving the checker 2. it can.

  Further, until the pipe 50 is inserted to the normal depth in the pipe insertion portion 4 at the temporary fixing position, the claw portion 44 is fitted in the temporary fixing groove 18, and therefore the checker 2 cannot move. When the pipe 50 is inserted into the pipe insertion portion 4 to the normal depth at the temporary fixing position, the claw portion 44 is moved outward in the radial direction of the opening 41 and is disengaged from the temporary fixing groove 18, so that the checker 2 moves. It becomes possible. Thereby, the checker 2 can be temporarily fixed until the pipe 50 is inserted to the pipe insertion part 4 to a regular depth in the temporary fixing position.

  And since it is the structure which fits the checker 2 in the outer surface of the pipe insertion part 4, a mutual engagement relationship is simple. Therefore, the components of the connector 100 can be easily assembled. Further, since the checker 2 is configured to be pushed and moved rearward in the axial direction of the pipe insertion hole 11, little space is required for gripping and moving the checker 2 around the pipe insertion portion 4. Therefore, the connection work with the pipe 50 can be suitably performed even in a limited space. Thereby, the assembly property of each component of the connector 100 and the connection workability with the pipe 50 can be improved.

  Further, in this embodiment, when the checker 2 is moved from the temporary fixing position to the locking position, the locking piece 46 is positioned outside the retaining pawl 31 in the radial direction of the pipe insertion hole 11, so that the retaining pawl 31 is The pipe insertion hole 11 cannot move radially outward.

  According to this configuration, when the checker 2 is moved to the lock position, the retaining claw 31 that faces the surface 51 b on one end side of the spool portion 51 cannot move radially outward of the pipe insertion hole 11, and one end of the spool portion 51 Since the opposing state of the side surface 51b and the retaining claw 31 is maintained, the pipe 50 can be prevented from being pulled out from the pipe insertion portion 4.

  In the present embodiment, the pipe insertion portion 4 has a lock groove 19 provided on the outer surface of the pipe insertion portion 4 on the other end side of the temporary fixing groove 18, and the claw portion 44 has the lock groove 19 at the lock position. It is supposed to fit in.

  According to this configuration, when the checker 2 is moved to the lock position, the claw portion 44 fits into the lock groove 19, so that the movement of the checker 2 can be locked.

  In the present embodiment, the second lock groove 21 provided on the outer surface of the pipe insertion portion 4 and the detection leg 43 are the opening 41 at a position different from the lock groove 19 in the circumferential direction of the pipe insertion hole 11. Are provided on the checker 2 at different positions in the circumferential direction, and extend toward the other end side, and project from the other end of the locking leg 47 toward the pipe insertion portion 4, and at the lock position, the second lock And a locking claw 48 that fits into the groove 21.

  According to this configuration, when the checker 2 is moved to the lock position, the claw portion 44 fits in the lock groove 19 and the locking claw 48 fits in the second lock groove 21, so that the movement of the checker 2 is locked. Here, in order to facilitate elastic deformation of the detection leg 43 with the claw 44 protruding at the tip in the radial direction of the opening 41, it is necessary to reduce the width of the detection leg 43 to reduce the rigidity. However, if the width of the detection leg 43 is narrowed, the width of the claw portion 44 at the tip of the detection leg 43 is also narrowed. Therefore, in the configuration in which the checker 2 is locked only by the claw portion 44, Becomes unstable. Therefore, a locking leg 47 is provided separately from the detection leg 43, and the locking claw 48 protruding from the tip of the locking leg 47 is also configured to lock the checker 2. Thereby, the checker 2 can be stabilized with respect to the pipe insertion part 4. FIG.

  Further, in the present embodiment, the locking claw 48 is fitted into the second temporary fixing groove 20 at the temporary fixing position, and the second temporary fixing is performed as the checker 2 is moved from the temporary fixing position toward the locking position. It slides on the inclined surface 22 from the groove 20 and is moved to the second lock groove 21 so as to be fitted into the second lock groove 21 at the lock position.

  According to this configuration, the locking claw 48 moves from the second temporary fixing groove 20 to the second locking groove 21 by sliding on the inclined surface 22. At this time, since the locking leg 47 only needs to be slightly elastically deformed in the radial direction of the opening 41, it is not necessary to lower the rigidity of the locking leg 47, and the width of the locking leg 47 is made larger than the width of the detection leg 43. Can be wide. Thereby, the checker 2 can be more stabilized with respect to the pipe insertion part 4. FIG.

(Modification of this embodiment)
The embodiment of the present invention has been described above, but only specific examples are illustrated, and the present invention is not particularly limited, and the specific configuration and the like can be appropriately changed in design. Further, the actions and effects described in the embodiments of the invention only list the most preferable actions and effects resulting from the present invention, and the actions and effects according to the present invention are described in the embodiments of the present invention. It is not limited to what was done.

DESCRIPTION OF SYMBOLS 1 Connector main body 2 Checker 4 Pipe insertion part 5 Hose connection part 11 Pipe insertion hole 12 Connector base part 13 Bush 14 Retainer 15 Connection port 16 Recess 17 Housing hole 18 Temporary fixation groove 19 Lock groove 20 2nd temporary fixation groove 21 2nd lock groove 22 inclined surface 23 connection groove 24 convex portion 25 notch portion 26 abutting wall 27 through-hole 28 retainer main body 29 concave portion 30 retaining leg 31 retaining claw 32 connecting leg 33 connecting claw 41 opening 42 wall portion 43 detecting leg 44 claw portion 45 Projection 46 Lock piece 47 Locking leg 48 Locking claw 50 Pipe 51 Spool (annular convex)
100 connector

Claims (4)

A connector connected to a pipe provided with an annular protrusion on the outer periphery of the end,
A connector body in which a pipe insertion hole into which the pipe is inserted is formed at one end;
One end of the connector body has an opening that is fitted to the outer surface of the connector body and communicates with the pipe insertion hole, and the pipe is inserted between a temporary fixing position on one end side and a lock position on the other end side. A checker movable in the axial direction of the hole;
With
The connector body has a temporary fixing groove provided on the outer surface;
The checker is
A detection leg that extends toward the other end and is elastically deformable in the radial direction of the opening;
A claw portion that protrudes from the other end of the detection leg toward the connector main body and fits into the temporary fixing groove before the pipe is inserted into the connector main body to a normal depth at the temporary fixing position;
A protrusion protruding from the middle of the detection leg toward the connector body;
Have
The protrusion is moved radially outward of the opening by the annular protrusion when the pipe is inserted to a normal depth in the connector main body at the temporary fixing position. Moved outward in the radial direction of the opening to disengage the temporary fixing groove,
The checker that the claw portion is disengaged from said temporary fixing groove, Ri sufficiently to allow a move toward the locking position from the tacking position,
The connector body has a retaining claw facing the one end side surface of the annular convex portion when the pipe is inserted into the connector body to a normal depth.
The checker has a lock piece provided on one end side and protruding to the other end side,
When the checker is moved from the temporary fixing position to the locking position, the locking piece is positioned outside the retaining pawl in the radial direction of the pipe insertion hole, so that the retaining pawl is a diameter of the pipe insertion hole. Connector that cannot move outward in the direction . The connector body has a lock groove provided on the outer surface of the connector body on the other end side of the temporary fixing groove,
The connector according to claim 1, wherein the claw portion is fitted into the lock groove at the lock position. A second locking groove provided on the outer surface of the connector body at a position different from the locking groove in the circumferential direction of the pipe insertion hole;
A locking leg provided on the checker at a position different from the detection leg in the circumferential direction of the opening, and extending toward the other end side;
A locking claw that protrudes from the other end of the locking leg toward the connector body and fits in the second locking groove at the locking position;
The connector according to claim 2 , further comprising: The connector body is
A second temporary fixing groove provided on an outer surface of the connector main body on one end side of the second lock groove;
An inclined surface that inclines radially outward of the pipe insertion hole from the second temporary fixing groove toward the second lock groove;
Have
The locking claw is fitted into the second temporary fixing groove at the temporary fixing position, and the second temporary fixing groove is moved from the second temporary fixing groove as the checker is moved from the temporary fixing position toward the locking position. 4. The connector according to claim 3 , wherein the connector is moved to the second lock groove by sliding on an inclined surface and fits in the second lock groove at the lock position. 5.