JP5868204B2 - connector - Google Patents

Description

  The present invention relates to a connector for connecting pipes.

  A connector for connecting pipes is 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 the connector as in Patent Document 1, when the replacement of the pipe is taken into consideration, the lock member at the connection position is moved to a position where the pipe can be forcibly pulled out by a screwdriver or the like, and the pipe is pulled out. It is necessary to return the lock member to the standby position.

  In view of the above facts, the present invention has an object to provide a connector in which the lock member returns to the standby position when the pipe is pulled out by moving the lock member in the coupling position.

The connector according to claim 1, wherein a connector main body having a circular opening into which a pipe having an annular flange portion formed on an outer peripheral surface is inserted, and the flange portion of the pipe are provided in the connector main body. Is a standby position that can pass through the opening, a connection position that moves in the radial direction of the opening and connects the pipe, and a pipe that moves from the connection position toward the standby position and passes through the standby position A locking member movable to an extraction position; a locking means provided on the locking member; locking means for locking the locking member to the connector main body at the standby position; and provided on the locking member, protruding into the opening, In a state where the lock member is in the standby position, when the flange portion comes into contact with the pipe when it is inserted, the flange is pushed outward and is expanded by the lock means. The lock member is released from the locked state, restored and wraps around the outer peripheral surface of the flange portion, and the lock member is moved to the connection position, and the standby position is passed from the connection position. In a state where the pipe is in the pipe extraction position, the biasing means is pushed outward by the flange portion, and when the pipe is pulled out, the biasing means slides with the connector body and returns the lock member to the standby position, wherein provided on the locking member, thereby preventing movement to the connecting position of the locking member by the biasing means abuts against the outer periphery of the front-Symbol flange, the pipe is further inserted, the flange portion When the abutment is released, it moves to the coupling position together with the lock member, is located on the opposite side of the pipe insertion direction from the flange portion, A detection stopper that overlaps with the flange portion when viewed from the axial direction of the pipe, and is provided on the lock member, and engages with an engaged portion of the connector body at the pipe extraction position, and the lock member is separated from the connector body. And an engaging portion for preventing it from coming off.

  According to the first aspect of the present invention, the connector includes a connector main body having a circular opening, and a pipe having an annular flange formed on the outer peripheral surface is inserted into the opening. The connector body is provided with a lock member, and the lock member has a standby position where the flange portion of the pipe can pass through the opening portion, a connection position where the pipe is connected by moving in the radial direction of the opening portion, and The pipe moves from the connection position toward the standby position and can move to the pipe extraction position after passing through the standby 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 an urging means, and the urging means protrudes into the opening of the connector body. When the flange comes into contact with the pipe when it is inserted, the urging means is pushed outward and locked by the locking means. Release the locked state of the member. As a result, the urging means is restored and wraps around the outer peripheral surface of the flange portion of the pipe to move 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.

On the other hand, the lock member is provided with a detection stopper, and when the lock member is unlocked by the lock means, the lock member abuts on the outer peripheral portion of the flange portion of the pipe and the lock member by the biasing means. Is prevented from moving to the connecting position.

  For this reason, when the pipe is further inserted and the contact between the detection stopper and the flange portion is released, the detection stopper can move to the coupling position together with the lock member. When the lock member moves to the coupling position, the detection stopper is positioned on the opposite side of the pipe insertion direction from the flange portion, and overlaps with the flange portion when viewed from the axial direction of the pipe. For this reason, the movement toward the opposite side of the insertion direction of the pipe is prevented in a state where the pipe is connected to the connector.

  That is, at the moment when the flange portion of the pipe passes the position of the detection stopper, the lock member that has already been released from the locked state is automatically moved from the standby position to the connected position to be in the connected state.

  Further, the locking member is provided with an engaging portion. When the locking member at the connecting position is moved from the connecting position to the pipe extraction position through the standby position, the engaging portion of the connector main body is engaged. Engage with the joint. For this reason, the lock member cannot be removed from the connector body. In addition, when the lock member is in the pipe extraction position, the urging means is pushed outward by the flange portion of the pipe, and when the pipe is pulled out, the urging means is restored to slide with the connector body. Return the lock member to the standby position. For this reason, when the lock member in the connecting position is moved and the pipe is pulled out, the lock member returns to the standby position.

  According to a second aspect of the present invention, in the connector according to the first aspect, the engaging portion and the engaged portion are in surface contact.

  In the invention according to claim 2, when the engaging portion of the lock member and the engaged portion of the connector main body are engaged, the engaging portion and the engaged portion are in surface contact. For this reason, the attitude | position of the lock member in a pipe extraction position is stabilized. As a result, when the pipe is pulled out, the lock member can be reliably returned to the standby position.

  The invention according to claim 3 is the connector according to claim 1 or 2, wherein the urging means is a pair of elastic pieces that hang in parallel from both longitudinal ends of the base of the lock member, The bent portions of the pair of elastic pieces bent inwardly adjacent to each other slide with the connector main body to return the lock member to the standby position.

  In the invention according to claim 3, the urging means is a pair of elastic pieces hanging in parallel from both longitudinal ends of the base portion of the lock member. Further, the bent portions of the pair of elastic pieces bent inwardly adjacent to each other slide with the connector main body to return the lock member to the standby position. For this reason, the lock member can be returned to the standby position with a simple configuration.

  According to a fourth aspect of the present invention, in the connector according to the third aspect, the engaging portion is a pair of wall portions formed at the tip of the bent portion, and the engaged portion is an upper portion of the connector main body. It is a contact part formed in the outer side edge part of a wall part, and extending along the longitudinal direction of the base part of the said lock member.

  In the invention according to claim 4, the engaging portion is a pair of wall portions formed at the distal ends of the bent portions of the elastic pieces bent inwardly adjacent to each other, and the engaged portion is the upper wall portion of the connector body. It is the contact part which is formed in the outer side edge part and extends along the longitudinal direction of the base part of a lock member. For this reason, even when the pair of elastic pieces are deformed in the direction away from each other when the lock is released, the pair of wall portions does not come off from the pair of contact portions. As a result, the lock member does not come off the connector body when the pipe is pulled out.

  Since this invention of Claim 1 was set as the said structure, when a lock member in a connection position is moved and a pipe is pulled out, a lock member returns to a standby position.

  Since this invention of Claim 2 was set as the said structure, when a pipe is extracted, a lock member can be reliably returned to a standby position.

  Since this invention of Claim 3 was set as the said structure, it can return a lock member to a standby position with a simple structure.

  Since this invention of Claim 4 was set as the said structure, when pulling out a pipe, a locking member does not remove | deviate from a connector main body.

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. It is a perspective view which shows the locking member of the connector which concerns on one Embodiment of this invention. It is the perspective view seen from the opposite direction to Drawing 3 showing the locking member of the connector concerning one embodiment of the present invention. It is sectional drawing corresponding to FIG. 7 which shows the standby position of the locking member of the connector which concerns on one Embodiment of this invention. It is sectional drawing corresponding to FIG. 7 which shows the lock release state of the locking member of the connector which concerns on one Embodiment of this invention. It is sectional drawing which followed the 7-7 sectional line of FIG. 8 which shows the connection position of the locking member of the connector which concerns on one Embodiment of this invention. FIG. 8 is a cross-sectional view taken along the line 8-8 in FIG. 7. It is a side view which shows the pipe extraction position of the locking member in the connector which concerns on one Embodiment of this invention. FIG. 10 is a cross-sectional view taken along the line 10-10 in FIG. 9;

A connector according to an embodiment of the present invention will be described with reference to FIGS.
The connector 10 of this embodiment shown in FIG. 1 is used, for example, for fastening a cooling water pipe in an engine room of a vehicle so that a metal pipe 12 is connected and a resin tube 13 is attached. It has become. For convenience of explanation, the arrow UP shown in FIG. 1 and FIG.

(Connector configuration)
As shown in FIG. 1, the connector 10 includes a housing 14 as a connector body having a substantially cylindrical shape, and a substantially inverted U-shaped lock member 16 attached to the outer periphery of the housing 14. A connecting portion 18 to which the lock member 16 is movably mounted and the pipe 12 is connected is provided at one end side of the housing 14, and the tube 13 is inserted into the other end side of the housing 14. Part 20 is provided.

  As shown in FIG. 8, a tapered portion is formed at the distal end portion (the other end portion of the housing 14) 20A of the insertion portion 20, and the distal end of the tapered portion has a smaller diameter than the tube 13, and the tube 13 is inserted. It has become easier.

  Between the insertion portion 20 and the connecting portion 18, a medium diameter portion 24 having a diameter larger than the outer diameter of the insertion portion 20 is provided, and the distal end surface of the tube 13 is in contact with the end surface of the medium diameter portion 24. Thus, the tube 13 is prevented from moving. In this state, although not shown, the tube 13 can be securely fixed to the insertion portion 20 by a dedicated clamp or the like.

  As shown in FIG. 1, the connecting portion 18 has a substantially cylindrical shape at one end side, and a substantially rectangular shape at the other end side. A large-diameter portion 26 larger in diameter than the medium-diameter portion 24 provided in the insertion portion 20 is provided on one end side of the connecting portion 18, and an annular recess (not shown) is provided on the inner peripheral surface of the large-diameter portion 26. (Omitted) is recessed. O-rings 30 and 32 are fitted in the annular recess, and when the pipe 12 is connected to the connecting portion 18, a gap between the inner peripheral surface of the large diameter portion 26 and the outer peripheral surface of the pipe 12 is filled. It comes to seal.

  Although not shown, an annular spacer having a rectangular cross section is disposed between the O ring 30 and the O ring 32 to compress the O ring 30 and the O ring 32 and The sealing power may be increased.

  As shown in FIG. 8, a lock portion 36 and a mounting portion 38 are provided on the other end side of the connecting portion 18 along the axial direction of the housing 14, and the lock portion 36 is on the large diameter portion 26 side. Is arranged.

  As shown in FIG. 1, 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. For this reason, the rectangular parallelepiped protrusions 40 and 42 protrude from the upper and lower portions of the side wall 36A on the side wall 36A of the lock portion 36, respectively. A gap 44 is provided between the protrusion 40 and the protrusion 42.

  An annular recess (not shown) is recessed in the inner peripheral surface of the lock portion 36. An annular bush 48 can be fitted into the annular recess in a state protruding from the inner peripheral surface of the lock portion 36. The inner diameter dimension of the bush 48 is substantially the same as the outer diameter dimension of the pipe 12. The bush 48 is made of, for example, polyacetal or nylon.

  A circular opening 50 is formed in the mounting portion 38 that is one end of the housing 14 along the axial direction of the housing 14. The opening 50 has a larger diameter than the inner diameter of the bush 48, and is sized such that an annular flange 12A formed on the outer peripheral surface of the pipe 12 can be inserted.

  The mounting portion 38 is formed with left and right through holes 54 and an upper through hole 56, leaving the lower wall portion 51 and the bridge portions 52 at both upper corners. On the other hand, a detection stopper 64 hangs down from the inner surface of the base portion 16 </ b> A located at the center of the lock member 16 corresponding to the through hole 56 formed in the mounting portion 38. It is possible to install from.

  The base portion 16 </ b> A of the lock member 16 is an arc surface 72 having substantially the same curvature facing the arc portion 70 formed on 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. 3, on both edges of the central portion in the longitudinal direction of the base portion 16 </ b> A of the lock member 16, an operation inclined portion 74 is formed to project at a position facing the upper wall 36 </ b> B of the lock portion 36 in the connecting portion 18. Yes. The operation inclined portion 74 is exposed from the upper wall 36B of the connecting portion 18 at the connecting position of the lock member 16, and a minus driver or a dedicated jig can be inserted.

  As shown in FIG. 5, the distal end portion 64 </ b> A of the detection stopper 64 is an arc having a radius of curvature that is substantially the same as the outer diameter of the pipe 12, and can contact the outer peripheral surface of the pipe 12. As shown in FIG. 8, 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 pipe 12 is placed 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 distal 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 flange portion 12 </ b> A of the pipe 12. . For this reason, when the pipe 12 is viewed in the insertion direction of the pipe 12 (in the direction of arrow B in FIG. 8) with the flange portion 12A disposed in the gap, the flange portion 12A is covered with the detection stopper 64. It becomes the state. That is, the detection stopper 64 and the flange portion 12A overlap. In other words, the bushing 48 and the detection stopper 64 prevent the pipe 12 from moving in the axial direction (the direction of arrow A and the direction of arrow B in FIG. 8). Further, the detection stopper 64 has a single plate structure in which a pair of tip portions 64A are connected to each other, and has higher rigidity than a two-plate structure in which a slit is formed at the center of the pair of tip portions 64A. Yes. For this reason, when the pipe 12 tries to move in the pulling direction (the direction of arrow A in FIG. 8), the detection stopper 64 is difficult to deform, and the movement of the pipe 12 in the pulling direction can be reliably prevented. It has become.

  As shown in FIG. 1, 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, the lower wall portion 51, and the installation portion 52 of the lock portion 36. The corners of each end face can contact the end face 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 part 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.

  The distal ends of the pair of elastic pieces 80 are bent portions 80A, and each bent portion 80A is bent toward the inner side adjacent to each other and penetrates the through hole 54 formed in the side wall of the mounting portion 38. However, it protrudes from the bush 48 toward the inner diameter side. As shown in FIG. 4, a protrusion 61 is provided on the inner side of the central portion in the longitudinal direction of the locking piece 78, the elastic piece 80 passes through the through hole 54, and the lock member 16 is attached to the mounting portion 38. In the state where it is mounted, as shown in FIG. 5, it comes into contact with the erection part 52 and prevents the lock member 16 from moving upward.

  As shown in FIG. 3, 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. In addition, a wall portion 87 as an engaging portion is formed at the end of the bent portion 80A at the end opposite to the taper 85.

  As shown in FIG. 4, the wall portion 87 protrudes upward from the end portion of the contact portion 84, and the upper surface 87 </ b> A is a horizontal plane.

  As shown in FIG. 10, the outer end portion in the width direction of the upper wall 36 </ b> B of the lock portion 36 in the housing 14 is a pair of contact portions 89 as engaged portions. These contact portions 89 extend along the longitudinal direction of the base portion 16A that intersects the moving direction of the lock member 16 (vertical direction in FIG. 10), and the lower surface 89A of these contact portions 89 is a horizontal plane. . Further, the side surface 89B of the contact portion 89 is a vertical surface, and the lower surface 89A and the side surface 89B are connected by an inclined surface 89C. Further, the upper surface 87A of the wall portion 87 of the lock member 16 is engaged with the lower surface 89A of the contact portion 89. That is, when the lock member 16 moves upward with respect to the housing 14 and moves to the pipe extraction position shown in FIG. 10, the wall portion 87 of the lock member 16 engages with the contact portion 89 of the housing 14, and the lock member 16 16 stops at the pipe extraction position.

  As shown in FIG. 5, 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 12B of the pipe 12 comes into contact with the contact portion 84, The elastic piece 80 is pushed and spread outward (in the direction of arrow C in FIG. 5) via 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 12C of the inserted pipe 12.

  As shown in FIG. 4, 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.

  As shown in FIG. 5, in the standby position, the lock member 16 is prevented from moving downward while the locking portion 86 is disposed in the gap 44 and is in contact with the upper side surface of the protrusion 42. Yes. In the standby position, a gap is provided between the locking portion 86 and the lower surface of the protrusion 40 (see FIG. 1). As described above, the lock member 16 is mounted on the mounting portion 38. In this state, the protrusion 61 provided on the locking piece 78 comes into contact with 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. 4, 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.

  As shown in FIG. 6, when the elastic piece 80 is further expanded, the locking piece 78 is expanded outward through 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 is set so as to contact at a position beyond the axis 12C 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. It goes around along the outer peripheral surface of the flange portion 12A and tries to move the lock member 16 in the connecting position direction (the direction of arrow D in FIG. 6).

  However, as shown in FIG. 6, the distal end portion 64 </ b> A of the detection stopper 64 is in contact with the outer peripheral portion of the flange portion 12 </ b> A of the pipe 12, thereby preventing the lock member 16 from moving to the coupling position.

  Next, as shown in FIG. 8, when the pipe 12 is further inserted and moved in the direction of arrow B in FIG. 8 and the flange portion 12A passes the position of the detection stopper 64, the tip end portion 64A of the detection stopper 64 is flanged. The detection stopper 64 moves to the coupling position together with the lock member 16 by being separated from the portion 12A.

  At this time, as shown in FIG. 7, 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 the present embodiment, the locking portion 86 is in contact with the upper side surface of the projection 40 at the standby position of the lock member 16, and is in contact with the lower side surface of the projection 42 at the connection position of the lock member 16. However, it is only necessary to be able to prevent the movement of the lock member 16 at the standby position and the connection position of the lock member 16, and the present invention is not limited to this. For example, instead of the protrusions 40 and 42, a recess that can be engaged or locked by the locking portion 86 may be provided.

  On the other hand, when removing the pipe 12 from the connector 10, in the connected state, a minus driver or a dedicated jig is inserted into the operation inclined portion 74 provided at the center of the lock member 16, and the lock member 16 is moved upward. lift. Thereby, the contact portion 84 is pushed outward along the outer peripheral surface of the flange portion 12 </ b> A of the pipe 12, and the elastic piece 80 is pushed outward via the contact portion 84. The elastic piece 80 abuts on the pressing piece 90 to push the locking piece 78 outward through the pressing piece 90.

  And the latching | locking part 86 of the latching piece 78 gets over the protrusion 42, and the locked state of the latching | locking part 86 is cancelled | released. For this reason, the lock member 16 is lifted upward by a flathead screwdriver or a dedicated jig. When the lock member 16 is lifted upward, as shown by a two-dot chain line in FIG. 10, the contact portion 84 contacts the flange portion 12 </ b> A of the pipe 12 at a position above the axis 12 </ b> C of the pipe 12. The upward force (in the direction of arrow E in FIG. 10) is applied by the restoring force of the elastic piece 80. On the other hand, the upper surface 87 </ b> A of the wall portion 87 of the lock member 16 is engaged with the lower surface 89 </ b> A of the contact portion 89 of the housing 14. For this reason, the lock member 16 is held at the pipe extraction position. Further, in the state where the lock member 16 is in the pipe extraction position, the detection stopper 64 has moved to a position where it does not interfere with the flange portion 12A of the pipe 12, so that the pipe 12 is moved in the removal direction (extraction direction). It becomes possible.

  Next, when the pipe 12 is pulled out from the connector 10, the elastic piece 80 is restored while releasing the urging force so that the bent portion 80 </ b> A of the elastic piece 80 slides on the inclined surface 89 </ b> C of the contact portion 89 of the housing 14. It has become. For this reason, the lock member 16 moves in the connecting position direction (the direction of arrow D in FIG. 10) and returns to the standby position shown in FIG. At the same time, the locking piece 78 of the lock member 16 is also restored, so that the lock member 16 is held at the standby position.

(Connector action / effect)
Next, functions and effects of the connector according to this embodiment will be described.

  As shown in FIG. 2, in the standby position where the pipe 12 is not inserted into the connecting portion 18 of the housing 14 of the connector 10, between the base portion 16 </ b> A of the lock member 16 and the upper wall 36 </ b> B of the connecting portion 18 shown in FIG. 1. A gap is provided.

  In the standby position, the locking portion 86 provided at the tip of the locking piece 78 of the lock member 16 is disposed in the gap 44 provided between the protrusion 40 and the protrusion 42 of the lock portion 36. The lock member 16 is prevented from moving downward by contacting the upper surface of the portion 42. Further, the protrusion 61 provided on the elastic piece 80 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, as shown in FIG. 5, when the pipe 12 is inserted into the opening 50 of the connecting portion 18, the outer peripheral surface 12 </ b> B of the pipe 12 contacts the abutting portion 84 provided at the tip of the elastic piece 80. In contact with each other, the elastic piece 80 is pushed outward through the contact portion 84.

  Further, when the pipe 12 is moved to the back of the connecting portion 18, as shown in FIG. 6, the flange portion 12A of the pipe 12 abuts against the abutting portion 84, further pushing the abutting portion 84 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 through 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 (in the direction of arrow D in FIG. 6).

  On the other hand, the contact portion 84 is set so as to contact at a position beyond the axis 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.

  Thereby, the contact part 84 of the elastic piece 80 goes around along the outer peripheral surface of the flange part 12A of the pipe 12, and tries to move the lock member 16 downward (in the direction of arrow D in FIG. 6).

  However, as shown in FIG. 6, the distal end portion 64 </ b> A of the detection stopper 64 abuts on the outer peripheral surface of the flange portion 12 </ b> A of the pipe 12, thereby moving the lock member 16 in the connecting position direction (arrow D direction in FIG. 6). Is blocked.

  Next, as shown in FIG. 8, when the pipe 12 is further inserted and the flange portion 12 </ b> A passes the position of the detection stopper 64, the tip end portion 64 </ b> A of the detection stopper 64 is detached from the flange portion 12 </ b> A of the pipe 12. When the distal end portion 64A of the detection stopper 64 is disengaged from the flange portion 12A of the pipe 12, the detection stopper 64 moves to the coupling position together with the lock member 16, as shown in FIG.

  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. In this connection position, the detection stopper 64 prevents the pipe 12 from moving in the drawing direction (arrow A direction in FIG. 8). Further, the detection stopper 64 has a single plate structure in which a pair of tip portions 64A are connected to each other, and has higher rigidity than a two-plate structure in which a slit is formed at the center of the pair of tip portions 64A. Yes. As a result, when the pipe 12 is about to move in the drawing direction (the direction of arrow A in FIG. 8), the detection stopper 64 is difficult to deform, and the movement of the pipe 12 can be reliably prevented.

  Further, in the connector 10 of the present embodiment, when the pipe 12 is removed, in the connected state, a minus screwdriver or a dedicated jig is inserted into the operation inclined portion 74 provided in the central portion of the lock member 16 to lock the lock member. 16 is lifted upwards. Thereby, the contact portion 84 is pushed outward along the outer peripheral surface of the flange portion 12 </ b> A of the pipe 12, and the elastic piece 80 is pushed outward via the contact portion 84. For this reason, the elastic piece 80 contacts the pressing piece 90 and pushes the locking piece 78 outward through the pressing piece 90.

  And the latching | locking part 86 of the latching piece 78 gets over the protrusion 42, and the locked state of the latching | locking part 86 is cancelled | released. For this reason, the lock member 16 is lifted upward by a flathead screwdriver or a dedicated jig. When the lock member 16 is lifted upward, as shown by a two-dot chain line in FIG. 10, the contact portion 84 contacts the flange portion 12 </ b> A of the pipe 12 at a position above the axis 12 </ b> C of the pipe 12. The upward force (in the direction of arrow E in FIG. 10) is applied by the restoring force of the elastic piece 80. On the other hand, the upper surface 87 </ b> A of the wall portion 87 of the lock member 16 is engaged with the lower surface 89 </ b> A of the contact portion 89 of the housing 14. For this reason, the lock member 16 is held at the pipe extraction position. Further, in the state where the lock member 16 is in the pipe extraction position, the detection stopper 64 has moved to a position where it does not interfere with the flange portion 12A of the pipe 12, so that the pipe 12 is moved in the removal direction (extraction direction). It becomes possible.

  Next, when the pipe 12 is removed from the connector 10, the elastic piece 80 is restored while releasing the urging force, and the bent portion 80 </ b> A of the elastic piece 80 slides with the inclined surface 89 </ b> C of the contact portion 89 of the housing 14. For this reason, the lock member 16 moves in the connecting position direction (the direction of arrow D in FIG. 10) and returns to the standby position shown in FIG. At the same time, the locking piece 78 of the lock member 16 is also restored, and the lock member 16 is held at the standby position.

  Therefore, in the connector 10 of the present embodiment, when the lock member 16 at the connection position is moved and the pipe 12 is pulled out, the lock member 16 can be returned to the standby position. For this reason, the pipe 12 can be replaced.

  Further, in this embodiment, when the upper surface 87A of the wall portion 87 of the lock member 16 and the lower surface 89A of the contact portion 89 of the housing 14 are engaged, the upper surface 87A of the wall portion 87 and the lower surface of the contact portion 89 are engaged. 89A makes surface contact. For this reason, the attitude | position of the locking member 16 in a pipe extraction position is stabilized. As a result, when the pipe 12 is pulled out, the lock member 16 can be reliably returned to the standby position.

  In this embodiment, the urging means is a pair of elastic pieces 80 that hang in parallel from both longitudinal ends of the base portion 16 </ b> A of the lock member 16, and the pair of elastic pieces 80 are bent inwardly adjacent to each other. The bent portion 80A slides on the contact portion 89 of the housing 14 to return the lock member 16 to the standby position. For this reason, the lock member 16 can be returned to the standby position with a simple configuration.

  In the present embodiment, a wall portion 87 as an engaging portion is formed at the tip of the bent portion 80A of the pair of elastic pieces 80 in the lock member 16 that is bent inwardly adjacent to each other. A pair of abutting portions 89 extending along the longitudinal direction of the 16 base portions 16A are engaged portions. For this reason, even when the pair of elastic pieces 80 is deformed in the direction of separating from each other when the lock is released, the pair of wall portions 87 does not come off from the pair of contact portions 89. As a result, when the pipe 12 is pulled out from the connector 10, the lock member 16 does not come off from the housing 14.

(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 upper surface 87A of the wall portion 87 and the lower surface 89A of the contact portion 89 are horizontal surfaces, but instead, the upper surface 87A of the wall portion 87 and the lower surface 89A of the contact portion 89 are replaced. It is good also as an inclined surface inclined in the direction where engagement is hard to disengage. Further, the wall portion 87 and the contact portion 89 may not be in surface contact.

  Further, in the above-described embodiment, the wall portion 87 as the engaging portion is formed at the distal end of the bent portion 80A bent inwardly adjacent to each other of the pair of elastic pieces 80, and the longitudinal direction of the base portion 16A of the lock member 16 A pair of abutting portions 89 extending along the line are engaged portions. Instead of this, the engaging part of the lock member 16 may be formed in another part of the lock member 16, and the engaged part of the housing 14 may be formed in another part of the housing 14.

  Moreover, in the said embodiment, as shown in FIG. 1, although the press piece 90 and the latching | locking part 86 were provided in the latching piece 78 provided in the locking member 16, it replaces with this and the outer side by the elastic piece 80 Other configurations may be used as long as the configuration is such that the locked state at the standby 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.

  Moreover, in the said embodiment, although the insertion part 20 and the connection part 18 are provided coaxially in the housing 14 shown in FIG. 1, what is necessary is just to be able to connect the pipe 12 and the tube 13 via the housing 14. FIG. Therefore, it is not limited to this.

  For example, an elbow part may be connected between the insertion part 20 and the coupling part 18 so that the insertion part 20 and the coupling part 18 are orthogonal to each other via the elbow part. In this way, by diversifying the shape of the housing 14, the connector 10 can be properly used in consideration of the positional relationship between the pipe 12 and the tube 13.

DESCRIPTION OF SYMBOLS 10 Connector 12 Pipe 12A Pipe flange part 12B Pipe outer peripheral surface 12C Pipe axis 14 Housing (connector body)
16 Locking member 40 Protruding part 42 Protruding part 50 Opening part 64 Detection stopper 78 Locking piece (locking means)
80 Elastic piece (biasing means)
80A Bent part of elastic piece 86 Locking part 90 Pressing piece 87 Wall part (engagement part of lock member)
89 Contact part (engaged part of the connector body)

Claims (4)

A connector body having a circular opening into which a pipe having an annular flange formed on the outer peripheral surface is inserted;
A standby position provided on the connector body, the flange portion of the pipe passing through the opening, a connecting position where the pipe is connected by moving in a radial direction of the opening, and the standby position from the connecting position; A pipe extraction position that has moved toward and passed through the standby position, and a lock member that can be moved to,
Lock means provided on the lock member and locking the lock member to the connector body at the standby position;
The lock member is provided on the lock member and extends into the opening. When the lock member is in the standby position, the lock member is pushed outward when the flange portion comes into contact with the pipe when the pipe is inserted. The lock state is released, restored, and wraps around the outer peripheral surface of the flange portion to move the lock member to the connection position and pass the standby position from the connection position so that the lock member is pulled out of the pipe. In a state of being in a position, the biasing means is pushed outward by the flange portion, and when the pipe is pulled out, the urging means slides with the connector body and returns the lock member to the standby position,
Wherein provided on the locking member, thereby preventing movement to the connecting position of the locking member by the biasing means abuts against the outer periphery of the front-Symbol flange, the pipe is further inserted, the flange portion When the abutment is released, it moves to the coupling position together with the lock member, is located on the opposite side of the pipe insertion direction from the flange part, and overlaps with the flange part when viewed from the axial direction of the pipe A stopper,
An engagement portion provided on the lock member, for engaging with an engaged portion of the connector body at the pipe extraction position, and for preventing the lock member from being detached from the connector body;
Having a connector.   The connector according to claim 1, wherein the engaging portion and the engaged portion are in surface contact.   The biasing means is a pair of elastic pieces hanging in parallel from both longitudinal ends of the base of the lock member, and the bent portions of the pair of elastic pieces bent inwardly adjacent to each other are slid with the connector main body. The connector according to claim 1, wherein the connector is moved to return the lock member to the standby position.   The engaging portion is a pair of wall portions formed at the tip of the bent portion, and the engaged portion is formed at an outer end portion of an upper wall portion of the connector body, and a longitudinal direction of a base portion of the lock member The connector according to claim 3, wherein the connector is a contact portion extending along the line.

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