JP5868207B2 - connector - Google Patents

Description

  The present invention relates to a connector for connecting cylindrical members.

  Conventionally, connectors for connecting cylindrical members such as pipes are known. For example, in Patent Document 1, the pipe is connected to the connector simply by inserting the pipe into the connector. Specifically, the lock member attached to the connector body is locked at a standby position where the pipe can be inserted into the connector body, and the lock to the connector body is released by the insertion of the pipe, and the lock member is moved to the coupling position. The pipe is prevented from coming off.

JP 2011-174508 A

  However, in a connector such as this Patent Document 1, there is a backlash in the Z direction that becomes the insertion direction of the connected cylindrical members, a backlash in the X direction that crosses the insertion direction, and a backlash in the Y direction. There is a need to reduce it.

  This invention considers the said fact and makes it a subject to provide the connector which can reduce the backlash of the connected cylindrical member.

The connector according to claim 1 is a cylindrical member in which an annular small-diameter flange portion and an annular large-diameter flange portion larger in diameter than the small-diameter flange portion are formed on the outer peripheral surface with a gap from the front end side. However, the connector main body having a circular opening to be inserted is formed, and at least three protrusions are formed at equal intervals in the circumferential direction on the inner peripheral side of the opening, and contact the outer peripheral surface of the large-diameter flange portion. A backlash prevention portion that prevents movement in a direction intersecting the insertion direction of the cylindrical member, and a seal that is provided on the back side of the backlash prevention portion in the opening and is in close contact with the outer peripheral surface of the cylindrical member Movable to a member, a standby position provided on the connector body, where the small-diameter flange portion can pass through the opening, and a connecting position where the cylindrical member is connected by moving in the radial direction of the opening A locking member, In the state provided in the locking member, locking means for locking the locking member to the connector body in the standby position, provided in the locking member, projecting into the opening, and the locking member is in the standby position, When the small diameter flange portion abuts when the cylindrical member is inserted, it is spread outward and releases the lock state of the lock member by the locking means, and is restored and wraps around the outer peripheral surface of the small diameter flange portion, An urging means for moving the lock member to the connection position; and provided on the lock member; when the lock member moves to the connection position, it is located on the opposite side of the insertion direction of the cylindrical member from the small-diameter flange portion; a detection stopper overlapping the small diameter flange portion when viewed from the insertion direction of the cylindrical member, is formed in the backlash preventing portion, the large diameter hula It has a stopper for preventing movement of the insertion direction of the cylindrical member by abutting on the insertion direction side surface of the di-section.

  In the first aspect of the present invention, the connector includes a connector main body in which a circular opening is formed, and the small diameter flange portion and the large diameter flange portion are spaced from the front end side on the outer peripheral surface in the opening. Cylindrical members that are opened and formed respectively are inserted. In addition, the connector body is provided with a lock member. The lock member is connected to a standby position where the small-diameter flange portion of the cylindrical member can pass through the opening, and the cylindrical member is moved in the radial direction of the opening. It is possible to move to the connecting position.

  The locking member is provided with locking means, and the locking means locks the locking member to the connector body at the standby position. Also, the locking member is provided with urging means, and the urging means projects into the opening of the connector body, and when the cylindrical member is inserted, the urging means is pushed outward and locked. The lock state of the lock member by the means is released. As a result, the urging means restores and wraps around the outer peripheral surface of the small-diameter flange portion of the cylindrical member, and moves the lock member to the coupling position. The term “restoration” here includes not only a case where the urging force is completely released to the urging unit and the urging unit is in a natural state, but also a case where the urging force is slightly left in the urging unit. It is.

  The lock member is provided with a detection stopper. When the lock member is unlocked by the lock means, the detection stopper moves to the coupling position, and is opposite to the insertion direction of the cylindrical member than the small-diameter flange portion. It overlaps with a small diameter flange part when it sees from the insertion direction of a cylindrical member. For this reason, in a state where the cylindrical member is connected to the connector, the movement toward the opposite side of the cylindrical member in the insertion direction (counter-insertion direction) is prevented.

  Further, at least three backlash prevention portions are formed at equal intervals in the circumferential direction on the inner peripheral side of the opening of the connector, and a seal member is provided on the inner side of the backlash prevention portion of the opening. . In the state where the cylindrical member is connected to the connector, the seal member is in close contact with the outer peripheral surface on the distal end side of the cylindrical member, and the backlash preventing portion is in contact with the outer peripheral surface of the large-diameter flange portion, so that the cylindrical shape The movement in the direction crossing the insertion direction of the member is prevented. For this reason, the backlash of the direction which cross | intersects the insertion direction of the connected cylindrical member can be reduced.

In the first aspect of the present invention, the stopper formed in the backlash preventing portion abuts against the surface on the insertion direction side of the large diameter flange portion to prevent the cylindrical member from moving in the insertion direction. Further, the movement of the cylindrical member in the anti-insertion direction is prevented by the detection stopper coming into contact with the small diameter flange portion. For this reason, it is possible to reduce backlash in the insertion direction of the connected cylindrical members.

According to a second aspect of the present invention, in the connector according to the first aspect, the shape of the backlash prevention portion viewed from the insertion direction is from the contact surface with the cylindrical member to the inner peripheral surface side of the opening. It gradually becomes wider toward the root of the tree.

In the invention according to claim 2 , the shape of the backlash prevention portion viewed from the insertion direction of the cylindrical member gradually increases from the contact surface with the cylindrical member toward the root portion on the inner peripheral surface side of the opening. Therefore, the rigidity of the backlash prevention portion is increased. As a result, deformation of the backlash preventing portion is suppressed, and backlash in a direction intersecting with the insertion direction of the connected cylindrical members can be further reduced.

According to a third aspect of the present invention, in the connector according to the first or second aspect , the backlash preventing portion extends along the insertion direction, and includes an inclined surface on the opening end side of the opening.

In the invention according to claim 3 , since the backlash preventing portion extends along the insertion direction and has an inclined surface on the opening end side of the opening, the inclined surface is inserted when the cylindrical member is inserted into the opening. And the cylindrical member is inserted into the back of the opening. As a result, the cylindrical members can be easily connected.

Since this invention of Claim 1 was set as the said structure, it can reduce the backlash of the direction which cross | intersects the insertion direction of the connected cylindrical member. Moreover, since this invention of Claim 1 was set as the said structure, the backlash of the insertion direction of the connected cylindrical member can be reduced.

Since this invention of Claim 2 was set as the said structure, the backlash of the direction which cross | intersects the insertion direction of the connected cylindrical member can further be reduced.

Since this invention of Claim 3 was set as the said structure, the connection of a cylindrical member becomes easy.

It is a top view which shows the connector which concerns on one Embodiment of this invention. It is a side view showing a connector concerning one embodiment of the present invention. FIG. 3 is a cross-sectional view taken along a line 3-3 in FIG. 1. FIG. 4 is a cross-sectional view taken along a line 4-4 in FIG. 2. It is an expanded sectional view of the principal part along the 5-5 sectional line of FIG. FIG. 6 is an enlarged cross-sectional view corresponding to FIG. 5 illustrating a connected state of the connector according to the embodiment of the present invention. It is an expanded sectional view of the principal part corresponding to Drawing 3 which shows the connection state of the connector concerning one embodiment of the present invention. It is a disassembled perspective view which shows the connector which concerns on one Embodiment of this invention. It is a perspective view which shows the standby position of the lock member in the connector which concerns on one Embodiment of this invention.

A connector according to an embodiment of the present invention will be described with reference to FIGS.
The connector of the present embodiment is used, for example, to connect a canister mounted on a vehicle to a canister for preventing a fuel tank side vapor from being excessively sucked during barge. ing. For convenience of explanation, the arrow UP shown in the figure is described as an upward direction of the connector as appropriate.

(Connector configuration)
As shown in FIG. 2, the connector 10 includes a housing 14 as a connector body that is formed by projecting from the outer peripheral portion 11 </ b> A of the cylindrical member 11 constituting the valve unit, and a lock member 16 that is mounted on the outer periphery of the housing 14. I have.

  As shown in FIG. 8, the housing 14 has a cylindrical shape, and the lock member 16 has a substantially inverted U shape. The lock member 16 is movably mounted on one end side of the housing 14 and is provided with a connecting portion 18 to which a pipe 12 as a cylindrical member extending from the canister side (not shown) is connected. The other end side of the housing 14 is connected to the cylindrical member 11. Also, the outer peripheral surface 12C of the pipe 12 has an annular small-diameter flange portion 12A and a large-diameter large-diameter flange portion 12B that is more annular than the small-diameter flange portion 12A, with an interval from the front end side to the outer peripheral surface of the pipe 12. Is formed.

  As shown in FIG. 3, an annular recess 18 </ b> A is formed in the inner peripheral surface of the connecting portion 18, and O-rings 30 and 32 as seal members are fitted in the annular recess. Further, as shown in FIG. 6, when the pipe 12 is connected to the connecting portion 18, the O-rings 30 and 32 are in close contact with the outer peripheral surface 12 </ b> C of the pipe 12, and the inner peripheral surface of the connecting portion 18 and the outer periphery of the pipe 12. The gap between the surface 12C is filled and sealed.

  An annular spacer 33 having a rectangular cross section is disposed between the O-ring 30 and the O-ring 32, compressing the O-ring 30 and the O-ring 32 and sealing with the outer peripheral surface 12 </ b> C of the pipe 12. It is designed to increase power. Note that the spacer 33 may be omitted as shown in FIG.

  As shown in FIG. 8, the connecting portion 18 is provided with a lock portion 36 and a mounting portion 38 along the axial direction of the housing 14, and the mounting portion 38 is disposed on the insertion side of the pipe 12. .

  The lock member 16 can be mounted on the mounting portion 38, and the lock member 16 mounted on the lock portion 36 is locked at a predetermined position. Therefore, on the side wall 36A of the lock portion 36, the protrusions 40 and 42 are provided to project from the upper and lower portions of the side wall 36A, respectively. A gap 44 is provided between the protrusion 40 and the protrusion 42.

  As shown in FIG. 4, an annular bush 48 is provided on the inner peripheral surface of the lock portion 36. A pair of convex portions 48 </ b> A are formed on the outer peripheral portion of the bush 48, and these convex portions 48 </ b> A are engaged with a concave portion 49 formed on the inner peripheral surface of the lock portion 36. The bush 48 is made of, for example, polyacetal or nylon.

  As shown in FIG. 8, a circular opening 50 is formed in the mounting portion 38, which is one end portion of the housing 14, along the axial direction of the housing 14 (the insertion direction of the pipe 12). The opening 50 has a larger diameter than the inner diameter of the bush 48, and the opening 50 has a size that allows the large-diameter flange 12B of the pipe 12 to be inserted.

  As shown in FIG. 1, a first backlash preventing portion 20 as a backlash preventing portion is formed to protrude on the inner peripheral side of the opening 50. Four first backlash preventing portions 20 are formed on the inner peripheral side of the opening 50 at regular intervals (90 degree intervals) along the circumferential direction. Further, the top portions 20A of the first backlash preventing portions 20 are in contact with the outer peripheral surfaces of the large-diameter flange portions 12B of the pipe 12, respectively. Therefore, as shown in FIG. 6, in a state where the pipe 12 is connected to the connector 10, the O-rings 30 and 32 are in close contact with the outer peripheral surface 12 </ b> C on the distal end side of the pipe 12 and the top portion 20 </ b> A of the first backlash preventing portion 20. Is brought into contact with the outer peripheral surface of the large-diameter flange portion 12B, so that the pipe 12 can be prevented from moving in the direction intersecting the insertion direction of the pipe 12.

  As shown in FIG. 1, the shape of the first backlash preventing portion 20 viewed from the insertion direction of the pipe 12 is formed on the inner peripheral surface of the opening 50 that becomes the root portion 20B from the top portion 20A that contacts the outer peripheral surface 12C of the pipe 12. It has a trapezoidal shape that gradually becomes wider. Accordingly, the rigidity of the first backlash preventing portion 20 is high.

  As shown in FIG. 6, the first backlash preventing portion 20 extends along the insertion direction of the pipe 12 and reaches the bush 48 from the opening end of the opening 50. The first backlash prevention unit 20 includes an inclined surface 20 </ b> C on the opening end side of the opening 50. Accordingly, when the pipe 12 is inserted into the opening 50, the pipe 12 is inserted into the depth of the opening 50 along the inclined surface 20 </ b> C of the first backlash prevention unit 20.

  As shown in FIG. 1, a second backlash preventing portion 24 as a backlash preventing portion is formed to protrude on the inner peripheral side of the opening 50. Two second backlash prevention parts 24 are formed at equal intervals (180 degree intervals) along the circumferential direction on the inner peripheral side of the opening 50, and are formed at the center of the two adjacent first backlash prevention parts 20. Has been. As shown in FIG. 7, a portion 24 </ b> A on the opening end side at the top of the second backlash prevention portion 24 comes into contact with the outer peripheral surface of the large-diameter flange portion 12 </ b> B of the pipe 12. Further, at the top of the second backlash preventing portion 24, step portions 24 </ b> B are formed in which the depth direction in the insertion direction of the pipe 12 is increased. When the pipe 12 is connected to the connector 10, these step portions 24 </ b> B are formed. Is in contact with the surface on the insertion direction side of the large-diameter flange portion 12B of the pipe 12, thereby preventing the pipe 12 from moving in the insertion direction.

  As shown in FIG. 1, the shape of the second backlash preventing portion 24 viewed from the insertion direction of the pipe 12 has a constant width from the top toward the inner peripheral surface of the opening 50 that becomes the root portion 24 </ b> C.

  As shown in FIG. 7, the second backlash preventing portion 24 extends along the insertion direction of the pipe 12 and reaches the bush 48 from the opening end of the opening 50. The first backlash prevention unit 20 includes an inclined surface 24 </ b> D on the opening end side of the opening 50. Therefore, when the pipe 12 is inserted into the opening 50, the pipe 12 is inserted into the depth of the opening 50 along the inclined surface 24 </ b> D of the second backlash prevention portion 24.

  As shown in FIG. 8, left and right through holes 54 and a pair of upper through holes 56 are formed on the mounting portion 38 of the connecting portion 18 in the lock member 16, leaving the erected portions 52 at the upper corners. . Note that the first backlash preventing portion 20 is divided at the intermediate portion in the longitudinal direction by the through holes 54 and 56. On the other hand, from the inner surface of the base portion 16A located at the center of the lock member 16, a pair of detection stoppers 64 hang down corresponding to the pair of through holes 56 formed in the mounting portion 38. The mounting portion 38 can be mounted from above. In addition, a protrusion 61 is provided on each outer side of the pair of detection stoppers 64, and comes into contact with the erection portion 52 in a state where the lock member 16 is attached to the attachment portion 38, so that the upward direction of the lock member 16 It is designed to prevent movement to.

  The base portion 16 </ b> A of the lock member 16 is a flat surface facing the upper wall 36 </ b> B of the lock portion 36 of the housing 14. Further, at the coupling position of the lock member 16, the base portion 16 </ b> A of the lock member 16 can come into surface contact with the upper wall 36 </ b> B of the lock portion 36.

  As shown in FIG. 7, a gap is formed in the axial direction of the housing 14 between the detection stopper 64 and the bush 48 at the connection position of the lock member 16, and the small diameter of the pipe 12 is in this gap. The flange portion 12A can be arranged.

  The inner diameter dimension of the bush 48 and the radius of curvature of the tip end portion of the detection stopper 64 are substantially the same as the outer diameter dimension of the pipe 12, which are smaller than the outer diameter dimension of the small-diameter flange portion 12 </ b> A of the pipe 12. Yes. For this reason, when the pipe 12 is viewed in the insertion direction of the pipe 12 (in the direction of arrow A in FIG. 7) with the small-diameter flange portion 12A disposed in the gap, the small-diameter flange portion 12A is detected by the detection stopper 64. It will be covered. That is, the detection stopper 64 and the small diameter flange portion 12A overlap. That is, the pipe 12 is prevented from moving in the insertion direction (arrow A direction in FIG. 5) and the anti-insertion direction (arrow B direction in FIG. 5) by the step portion 24B and the detection stopper 64 of the second backlash prevention portion 24. It has become.

  As shown in FIG. 8, the corners of the end surfaces of the lock portion 36 and the mounting portion 38 in the connecting portion 18 protrude outward from the surfaces of the upper wall 36 </ b> B and the erection portion 52 of the lock portion 36. The portions can be brought into contact with the end surfaces of the lock member 16 along the axial direction of the housing 14 in a state where the lock member 16 is attached to the attachment portion 38. For this reason, the movement of the lock member 16 along the axial direction of the housing 14 is prevented, and the lock member 16 is not rattled.

  Elastic pieces 80 as urging means hang from both ends of the base portion 16A of the lock member 16 in the longitudinal direction. In addition, from both ends of the base portion 16 </ b> A of the lock member 16 in the longitudinal direction, locking pieces 78 as locking means are suspended in parallel with the elastic pieces 80. The locking piece 78 is provided corresponding to the lock portion 36, and the elastic piece 80 is provided corresponding to the mounting portion 38. A slit 82 is provided between the elastic piece 80 and the locking piece 78, and the locking piece 78 and the elastic piece 80 can be elastically deformed.

  Each distal end side of the pair of elastic pieces 80 is bent inwardly adjacent to each other, passes through a through hole 54 formed in the side wall of the mounting portion 38, and projects to the inner diameter side from the bush 48.

  A contact portion 84 that bends in a direction close to each other along a substantially horizontal direction is provided at the tip of the elastic piece 80. The end face on the opening 50 side is a taper 85 that guides the pipe 12 to the back of the connecting portion 18 from the contact portion 84 to the central portion in the extending direction of the elastic piece 80.

  As shown in FIG. 9, when the pipe 12 is inserted into the opening 50 of the housing 14 with the lock member 16 in the standby position, the outer peripheral surface 12C of the pipe 12 abuts against the abutment 84, and The elastic piece 80 is spread outward through the contact portion 84. Here, the position of the contact portion 84 is set so as to contact at a lower position beyond the axis 12D of the inserted pipe 12.

  As shown in FIG. 8, a locking portion 86 extending along the inner direction is provided at the tip of the locking piece 78. The locking portion 86 can be inserted into a gap 44 provided between the protrusion 40 and the protrusion 42 provided on the lock portion 36 of the connecting portion 18 of the housing 14.

  In the standby position, the lock member 16 is prevented from moving in the downward direction in a state where the locking portion 86 is disposed in the gap 44 and is in contact with the upper side surface of the protrusion 42. In this standby position, a gap is provided between the locking portion 86 and the lower surface of the protrusion 40. However, as described above, the detection stopper is mounted in the state where the lock member 16 is mounted on the mounting portion 38. A protrusion 61 provided on 64 abuts on the lower surface of the erection portion 52 so that the upward movement of the lock member 16 is prevented.

  That is, the lock member 16 is prevented from moving in the vertical direction at the standby position of the lock member 16, and the pipe 12 can be inserted into the opening 50 at the standby position.

  As shown in FIG. 8, a pressing piece 90 extending to the elastic piece 80 side is provided on the distal end side of the locking piece 78. The pressing piece 90 is disposed outside the elastic piece 80 in a state where a gap is provided between the pressing piece 90 and the elastic piece 80 is spread outward to come into contact with the pressing piece 90. Yes.

  When the elastic piece 80 is further expanded, the locking piece 78 is expanded outward (in the direction of arrow C in FIG. 8) via the pressing piece 90. At this time, the urging force is accumulated in the elastic piece 80 and the locking piece 78. Further, when the locking piece 78 is pushed outward, the locked state at the standby position of the locking member 16 in which the locking portion 86 of the locking piece 78 is in contact with the protrusion 42 is released. .

  Here, as described above, the position of the contact portion 84 provided at the tip of the elastic piece 80 is set so as to contact at a position beyond the axis 12D of the inserted pipe 12. For this reason, when the lock state of the lock member 16 at the standby position is released, the elastic piece 80 and the locking piece 78 are restored while releasing the urging force, and the contact portion 84 of the elastic piece 80 is moved to the pipe 12. The lock member 16 is moved along the outer peripheral surface of the small-diameter flange portion 12A and moved in the direction of the coupling position.

  At this time, the locking portion 86 gets over the upper surface of the protrusion 42, hits the lower surface of the protrusion 42, and the lock member 16 is prevented from moving upward. In this state, the urging forces of the elastic piece 80 and the locking piece 78 are released. When the locking portion 86 is prevented from moving upward, the base portion 16A of the lock member 16 comes into contact with the upper wall 36B of the lock portion 36 at the same time, and the downward movement of the lock member 16 is prevented. . That is, in this state, the lock member 16 is in a coupling position where movement in the vertical direction is prevented.

In addition, since it is only necessary to prevent the movement of the lock member 16 at the standby position and the connection position of the lock member 16, for example, instead of the protrusions 40 and 42, the locking portion 86 can be engaged or locked. A recess may be provided.
(Connector action / effect)
Next, functions and effects of the connector according to this embodiment will be described.

  As shown in FIG. 9, in the standby position where the pipe 12 is not inserted into the connecting portion 18 of the housing 14 in the connector 10, a gap is provided between the base portion 16 </ b> A of the lock member 16 and the upper wall 36 </ b> B of the connecting portion 18. ing.

  Further, in the standby position, the locking portion 86 provided at the tip of the locking piece 78 of the lock member 16 has a gap provided between the protrusion 40 (see FIG. 8) and the protrusion 42 of the lock portion 36. 44 (refer to FIG. 8), abuts against the upper side surface of the protrusion 42 and prevents the lock member 16 from moving downward. Further, the protrusion 61 (see FIG. 8) provided on the detection stopper 64 comes into contact with the erection portion 52, and the upward movement of the lock member 16 is prevented. That is, in the standby position of the lock member 16, the lock member 16 is prevented from moving in the vertical direction.

  In this state, when the pipe 12 is inserted into the opening 50 of the connecting portion 18, the outer peripheral surface 12 </ b> C of the pipe 12 comes into contact with the contact portion 84 provided at the distal end portion of the elastic piece 80, and the contact portion 84. The elastic piece 80 is pushed outward through the.

  Further, when the pipe 12 is moved to the back of the connecting portion 18, the small-diameter flange portion 12 </ b> A of the pipe 12 comes into contact with the contact portion 84 and pushes the contact portion 84 further outward. Thereby, the elastic piece 80 is further pushed outward, the elastic piece 80 abuts on the pressing piece 90, and the locking piece 78 is pushed outward (in the direction of arrow C in FIG. 8) via the pressing piece 90. . As a result, the lock state of the lock member 16 at the standby position is released, and the lock member 16 becomes movable in the downward direction of the connecting portion 18.

  On the other hand, the contact portion 84 is set so as to contact at a position beyond the axis 12 </ b> D of the inserted pipe 12, and the urging force is accumulated in the locking piece 78 and the elastic piece 80. For this reason, when the locked state of the lock member 16 at the standby position is released, the elastic piece 80 and the locking piece 78 are restored while releasing the urging force.

  As a result, the contact portion 84 of the elastic piece 80 wraps around the outer peripheral surface of the small-diameter flange portion 12A of the pipe 12 to move the lock member 16 toward the connection position, and the detection stopper 64 moves to the connection position together with the lock member 16. To do.

  As a result, the pipe 12 is connected to the connector 10, and the locking portion 86 gets over the upper surface of the protrusion 42 and abuts on the lower surface of the protrusion 42, so that the lock member 16 is prevented from moving upward. Further, when the locking portion 86 is prevented from moving upward, the base portion 16A of the lock member 16 comes into contact with the upper wall 36B of the lock portion 36, and the downward movement of the lock member 16 is prevented. . As a result, the lock member 16 is prevented from moving in the vertical direction at the coupling position.

  Moreover, in the connector 10 of this embodiment, as shown in FIG. 1, the 1st backlash prevention part 20 and the 2nd backlash prevention part 24 as a backlash prevention part protrude on the inner peripheral side of the opening part 50 of the housing 14. As shown in FIG. Is formed. And four 1st backlash prevention parts 20 are formed in the inner circumference side of opening part 50 at equal intervals (90-degree space) along the peripheral direction, and 2nd backlash prevention part 24 is two adjacent. Two are formed at equal intervals (180 degree intervals) along the circumferential direction in the center of the first backlash preventing portion 20. Therefore, as shown in FIG. 6, in a state where the pipe 12 is connected to the connector 10, the O-rings 30 and 32 are in close contact with the outer peripheral surface 12 </ b> C on the distal end side of the pipe 12 and the top of the first backlash preventing portion 20. 20A contacts the outer peripheral surface of the large-diameter flange portion 12B of the pipe 12. Further, as shown in FIG. 7, the opening end side portion 24 </ b> A at the top of the second backlash preventing portion 24 abuts on the outer peripheral surface of the large-diameter flange portion 12 </ b> B of the pipe 12. As a result, the first backlash prevention portion 20 and the second backlash prevention portion 24 can prevent movement in the direction intersecting the insertion direction of the pipe 12, so that the insertion direction of the pipe 12 connected to the connector 10 The backlash in the intersecting direction (X, Y direction) can be reduced. Furthermore, as compared with a configuration in which the entire inner circumference side of the opening 50 has a small diameter, dust and the like attached to the contact surface with the pipe 12 can be reduced, and an increase in insertion force can be suppressed.

  In the connector 10 of this embodiment, as shown in FIG. 7, when the pipe 12 is connected to the connector 10, the stepped portion 24 </ b> B of the second backlash preventing portion 24 is inserted into the large-diameter flange portion 12 </ b> B of the pipe 12. It abuts on the direction side surface. For this reason, the movement of the insertion direction (arrow A direction of FIG. 7) along the axial direction of the pipe 12 can be prevented. Further, the detection stopper 64 can prevent the movement in the anti-insertion direction (the direction of arrow B in FIG. 7) along the axial direction of the pipe 12. As a result, the backlash in the axial direction (Z direction) of the pipe 12 connected to the connector 10 can be reduced by the step portion 24B and the detection stopper 64 of the second backlash prevention portion 24.

  Further, in the connector 10 of the present embodiment, the shape of the first backlash preventing portion 20 viewed from the insertion direction of the pipe 12 is such that the shape of the opening 50 that forms the root portion 20B from the top portion 20A that contacts the outer peripheral surface 12C of the pipe 12 is as follows. It has a trapezoidal shape that gradually becomes wider toward the periphery. For this reason, the rigidity of the 1st backlash prevention part 20 becomes high, and a deformation | transformation of the 1st backlash prevention part 20 is suppressed. As a result, backlash in the direction intersecting the insertion direction of the pipe 12 connected to the connector 10 can be further reduced.

  Moreover, in the connector 10 of this embodiment, as shown in FIG. 9, the 1st backlash prevention part 20 is extended in the insertion direction of the pipe 12, and is provided with the inclined surface 20C in the opening end side. Further, the second backlash preventing portion 24 extends in the insertion direction of the pipe 12, and includes an inclined surface 24D on the opening end side. Therefore, when the pipe 12 is inserted into the opening 50, the pipe 12 is inserted into the depth of the opening 50 by being guided by the inclined surface 20 </ b> C of the first backlash preventing portion 20 and the inclined surface 24 </ b> D of the second backlash preventing portion 24. Is done. As a result, the connection of the pipe 12 to the connector 10 is facilitated.

(Other embodiments)
While the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to the above-described embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, in the above embodiment, the first backlash prevention portion 20 and the second backlash prevention portion 24 are formed as the backlash prevention portion, but instead of this, only the first backlash prevention portion 20 is disposed on the inner peripheral side of the opening 50. Further, at least three or five or more protrusions may be formed at regular intervals in the circumferential direction.

  Moreover, in the said embodiment, although the step part 24B contact | abutted to the surface by the side of the insertion direction of the large diameter flange part 12B of the pipe 12 was formed in the top part of the 2nd backlash prevention part 24, it replaces with this and the 1st backlash prevention You may form the step part contact | abutted to the outer peripheral surface of the large diameter flange part 12B of the pipe 12 in the part 20. FIG. Further, the stopper is not limited to the stepped portion, and may be a convex portion or the like.

  Further, in the above embodiment, as shown in FIG. 8, the pressing piece 90 and the locking portion 86 are provided on the locking piece 78 provided on the lock member 16. Other configurations may be used as long as the configuration is such that the locked state at the standby position and the used position of the locking portion 86 is released.

  For this reason, the two elastic pieces 80 and the locking pieces 78 are not necessarily required, and if the elastic pieces 80 and the locking pieces 78 are at least one, the effects of the present invention can be obtained. Further, the shape of the locking piece 78 is not particularly limited to the above shape.

  In the above embodiment, the connector of the present invention is used to connect the valve unit to the canister. However, the connector of the present invention can be applied to other parts of the vehicle and other than the vehicle.

  For example, it is good also as a structure which connects the pipe as a cylindrical member, a tube, etc. via a connector.

DESCRIPTION OF SYMBOLS 10 Connector 12 Pipe 12A Small-diameter flange part of pipe 12B Large-diameter flange part of pipe 12C Outer peripheral surface of pipe 12D Pipe axis 14 Housing (connector body)
16 Lock member 20 First backlash prevention portion (backlash prevention member)
24 Second backlash prevention part (backlash prevention member)
24B Step (stopper)
30 O-ring (seal member)
32 O-ring (seal member)
50 Opening 64 Detection stopper 78 Locking piece (locking means)
80 Elastic piece (biasing means)

Claims (3)

A circular opening into which a cylindrical member in which an annular small-diameter flange portion and an annular large-diameter flange portion larger in diameter than the small-diameter flange portion are formed on the outer peripheral surface with a gap from the front end side is inserted. A connector body formed with a portion,
At least three protrusions are formed on the inner peripheral side of the opening at equal intervals in the circumferential direction, and contact with the outer peripheral surface of the large-diameter flange portion prevents movement in a direction crossing the insertion direction of the cylindrical member. A backlash prevention unit that
A seal member that is provided on the back side from the backlash prevention portion in the opening, and is in close contact with the outer peripheral surface of the cylindrical member;
A locking member that is provided on the connector body and is movable to a standby position where the small-diameter flange portion can pass through the opening, and a connecting position where the cylindrical member is connected by moving in the radial direction of the opening. When,
Lock means provided on the lock member and locking the lock member to the connector body at the standby position;
In the state where the lock member is provided and extends into the opening, and the lock member is in the standby position, when the cylindrical member is inserted, the small-diameter flange portion is pushed outward and spreads by the lock means. An urging means for releasing the lock state of the lock member, restoring and wrapping around the outer peripheral surface of the small-diameter flange portion, and moving the lock member to the coupling position;
When the lock member is moved to the coupling position, the small diameter flange portion is located on the opposite side of the small diameter flange portion from the insertion direction of the cylindrical member when viewed from the insertion direction of the cylindrical member. A detection stopper that overlaps with
A stopper that is formed in the backlash prevention portion and prevents movement of the cylindrical member in the insertion direction by contacting the surface on the insertion direction side of the large-diameter flange portion;
Having a connector. The shape of the backlash preventing portion when viewed from the insertion direction, according to claim 1, toward the contact surface between the cylindrical member to the root portion of the inner peripheral surface of the opening portion is gradually becoming wider Connector. The connector according to claim 1, wherein the backlash preventing portion extends along the insertion direction and includes an inclined surface on an opening end side of the opening.