JP6327521B2 - connector - Google Patents

Description

  The present invention relates to a connector.

  The connector disclosed in Patent Document 1 includes a first housing (housing) that can be fitted to a second housing (mating housing), and a position between a standby position and a detection position ahead of the standby position with respect to the first housing. And a detection member assembled in a movable manner. The first housing is provided with a lock arm extending in the front-rear direction. The lock arm is provided with a lock hole at a position facing the front end, and a pair of reinforcing ribs are provided on both sides in the width direction across the lock hole. The detection member is provided with a bending piece (locking arm) extending in the front-rear direction, and a locking protrusion (locking portion) is provided at the front end of the bending piece. Further, the mating housing is provided with a lock projection (mating lock portion).

  In the fitting process of both housings, the front end of the lock arm interferes with the lock protrusion, the lock arm is bent and deformed, and the locking protrusion enters the lock hole and comes into contact with the front end of the lock hole. The detection member is left in a state where movement to the detection position is restricted.

  When the fitting of both housings is completed, the lock projection fits into the lock hole and pushes the locking projection with the return movement of the lock arm, and the flexure piece is bent and deformed, allowing the detection member to move to the detection position. And the two housings are held in a state of being restricted from being detached. Therefore, if the detection member can move from the standby position to the detection position, it can be determined that both housings are in a properly fitted state.

  In the case of Patent Document 1, a pair of reinforcing ribs are provided from the front end of the lock arm to a position behind the tilting fulcrum, so that the rigidity of the front end of the lock arm is enhanced.

JP 2009-158263 A

  By the way, if the longitudinal length of the flexure piece becomes long, the flexure operation of the flexure piece increases accordingly, and the flexure piece easily swings in the width direction. In the above case, the lock arm is provided with a pair of reinforcing ribs. However, when the detection member is in the detection position, there are no reinforcing ribs on both sides of the front end of the bending piece. It is not possible to regulate the fluctuations. Therefore, if the longitudinal length of the bending piece becomes long, the bending piece may swing in the width direction. In the worst case, the detection member may not reach the detection position.

  This invention is completed based on the above situations, Comprising: It aims at improving the reliability of the fitting detection by a detection member.

  The present invention relates to a mating housing having a mating lock portion, a mating housing that can be fitted to the mating housing, a lock arm extending in the front-rear direction, and a standby position with respect to the housing. It is assembled so as to be movable in the front-rear direction between the detection positions, and includes a detection member provided with a locking arm extending in the front-rear direction, and a lock hole at a position facing the front end of the lock arm A locking portion is provided at the front end portion of the locking arm, and the locking arm is bent and deformed when the front end portion of the locking arm interferes with the counterpart locking portion in the fitting process of both housings. And when the engaging portion enters the lock hole, the engaging arm is engaged with the lock arm, and the detection member is retained in the standby position. When the fitting of the wing is completed, the mating lock part fits into the lock hole and pushes out the locking part in accordance with the return operation of the lock arm, and thereby the locking arm locks with the lock arm. A connector that is bent and deformed in a releasing direction, is allowed to move the detection member to the detection position, and is held in a state in which both housings are restricted from being separated, Even if the detection member is located at either the standby position or the detection position, the lock arm is arranged so as to cover both side surfaces of the lock arm, so that the lock arm can bend. It is characterized in that a pair of guide walls that can be guided are provided.

  Regardless of whether the detection member is in the standby position or the detection position, both guide walls of the lock arm are arranged so as to cover both side surfaces of the lock arm and can guide the bending operation of the lock arm. Therefore, the locking arm is prevented from swinging sideways (width direction) during the bending operation. As a result, the bending operation of the locking arm is smoothly performed, and the reliability of the fitting detection by the detection member can be improved.

In the connector which concerns on the Example of this invention, it is a front view of the housing with which the detection member was assembled | attached to the standby position. It is the sectional view on the AA line of FIG. It is a top view which shows the state in the middle of the other party housing being fitted to a housing. It is a top view which shows the state by which the other party housing was normally fitted by the housing. FIG. 4 is a cross-sectional view corresponding to FIG. 3. FIG. 5 is a cross-sectional view corresponding to FIG. 4. It is sectional drawing of the side view direction which shows the state in the middle of a mating housing being fitted to a housing. It is sectional drawing of the side view direction which shows the state which fitting further progressed from the state of FIG. 7, and the lock arm bent and deformed. It is sectional drawing of the side view direction which shows the state by which the other party housing was normally fitted by the housing. It is a principal part enlarged view of FIG. It is a front view of a housing. It is the BB sectional drawing of FIG. It is a front view of a detection member. It is a rear view of a detection member. It is a bottom view of a detection member.

Preferred embodiments of the present invention are shown below.
Regardless of whether the detection member is in the standby position or the detection position, the locking arm is not visible from the side by the pair of guide walls. According to this, the locking arm is protected from the external foreign matter by the both guide walls.

<Example>
Embodiments will be described below with reference to the drawings. The connector of the embodiment includes a mating housing 40, a housing 10 that can be fitted into the mating housing 40, and a detection member 60 that is assembled to the housing 10 so as to be movable between a standby position and a detection position. . In the following description, with respect to the front-rear direction, the side of the housings 10 and 40 facing each other at the start of fitting is defined as the front side, and with respect to the up-down direction, FIGS. 1, 7 to 11, 13, and 14 are used. Reference is made to the left and right directions, and FIGS. 1, 11, 13, and 14 are used as references. In this case, the vertical direction is synonymous with the height direction, and the horizontal direction is synonymous with the width direction.

  The mating housing 40 is made of synthetic resin, and as shown in FIG. 7, is provided directly connected to the device 90 and has a cylindrical hood portion 41 protruding forward. In the hood part 41, the tab 43 of the mating terminal fitting 42 protrudes. A pair of mating lock portions 44 project from the outer surfaces of the upper and lower walls of the hood portion 41. In the case of the present embodiment, the upper partner lock portion 44 of both partner lock portions 44 can be locked to a lock arm 23 described later of the housing 10. Therefore, in the following, the partner lock unit 44 refers to the upper partner lock unit 44.

  As shown in FIG. 3, the mating lock portion 44 includes a plate-like mating lock main body 45 extending in the left-right direction, and a plate-shaped projecting piece 46 projecting forward from the central portion in the left-right direction of the mating lock main body 45. And is formed in a T-shape in plan view. As shown in FIG. 7, the other party lock main body 45 is arrange | positioned so that it may stand up and down as a whole. The rear surface of the mating lock main body 45 is disposed so as to tilt slightly rearward toward the upper end. Further, the projecting piece portion 46 has a triangular shape in a right side view, and a leading edge is an inclined edge 47 inclined upward with an upward slope toward the rear. The front end (starting end) of the inclined edge 47 is connected to the outer surface of the upper wall of the hood portion 41, and the rear end (terminal) of the inclined edge 47 is connected to the upper end of the mating lock body 45.

  The housing 10 is made of synthetic resin, and as shown in FIG. 7, a housing body 11 elongated in the front-rear direction, a cylindrical fitting cylinder portion 12 surrounding the housing body 11, a fitting cylinder portion 12, and the housing It has the connection part 13 along the radial direction which connects the main body 11. The front portion of the housing body 11 is disposed so as to protrude forward from the front end of the fitting tube portion 12. A hood portion 41 of the mating housing 40 can be fitted between the housing body 11 and the fitting cylinder portion 12 and in a space in front of the connecting portion 13.

  As shown in FIG. 11, the housing body 11 is provided with a plurality of cavities 14. The cavities 14 are arranged side by side in pairs. As shown in FIG. 7, a bendable lance 15 is provided on the lower surface of the inner wall of the cavity 14 so as to protrude forward from the fitting tube portion 12. A terminal fitting 16 is inserted into the cavity 14 of the housing body 11 from the rear.

  The terminal fitting 16 is made of a conductive metal, and as shown in FIG. 7, has an elongated shape in the front-rear direction as a whole, and is provided with a cylindrical terminal body 17 at the front end and an open barrel-like barrel at the rear end. A portion 18 is provided. A tab 43 of a mating terminal fitting 42 is inserted into and connected to the terminal body 17 when both housings 10 and 40 are properly fitted. The barrel portion 18 is connected to the terminal portion of the electric wire 20 and the rubber plug 19 by crimping. When the terminal fitting 16 is properly inserted into the cavity 14, the terminal body 17 is elastically locked by the lance 15, whereby the terminal fitting 16 is accommodated in the cavity 14 in a state of being prevented from coming off. When the terminal fitting 16 is properly inserted into the cavity 14, the rubber plug 19 is brought into close contact with the inner peripheral surface of the rear end portion of the cavity 14, the inside of the cavity 14 is liquid-tightly sealed, and the electric wire 20 is housed in the housing. It is pulled out from the main body 11 backward.

  As shown in FIG. 7, a front retainer 21 is attached to the housing body 11 from the front. When the front retainer 21 enters the bending space of the lance 15, the bending operation of the lance 15 is restricted, and the terminal fitting 16 is secondarily prevented from coming off into the cavity 14. A rubber seal ring 22 is fitted on the outer peripheral surface of the housing body 11. As shown in FIG. 9, when the two housings 10 and 40 are normally fitted, the seal rings 22 are elastically sandwiched between the hood portion 41 and the housing main body 11 in the radial direction, so that both the housings 10 and 40. The space is sealed fluid-tight.

  A lock arm 23 is provided above the housing body 11. As shown in FIG. 7, the lock arm 23 includes a leg portion 24 that rises from the upper surface of the housing main body 11, and a lock arm main body 25 that extends from the upper end of the leg portion 24 in both the front and rear directions. The lock arm body 25 is swingably displaceable (elastically displaceable) in a seesaw shape with the leg portion 24 as a fulcrum. The rear end of the housing main body 11 is located behind the rear end of the lock arm main body 25, and an upper surface of the rear end portion of the housing main body 11 is disposed such that a region where the detection member 60 can slide is exposed upward. Has been.

  As shown in FIG. 9, a first groove portion 26 that extends in the front-rear direction and opens at the rear end of the lock arm body 25 is provided on the upper portion of the lock arm body 25. The first groove portion 26 opens on the upper surface of the lock arm main body 25 except for the rear end side (side covered with a movement restricting portion 36 described later). The front end of the first groove portion 26 is partitioned by the front end portion 27 of the lock arm main body 25.

  Further, as shown in FIGS. 9 and 10, a second groove portion 28 that extends in the front-rear direction and opens at the front end of the lock arm body 25 is provided at the lower portion of the lock arm body 25. The rear end of the second groove portion 28 is partitioned by the lower wall portion 29 of the lock arm main body 25. The lower wall portion 29 of the lock arm main body 25 is positioned in front of the leg portion 24 and defines the lower surface on the front end side of the first groove portion 26. Further, as shown in FIG. 5, the lower wall portion 29 is provided with a recess 30 extending rearward from the front surface (a rear stop portion 33 described later). As shown in FIG. 10, the recess 30 is also opened on the upper surface of the lower wall portion 29 so as to face the first groove portion 26. The rear surface of the recess 30 (which constitutes a part of the rear stop 33) is disposed so as to tilt backward toward the lower end.

  As shown in FIG. 10, the lock arm body 25 is provided with a lock hole 31 at a position facing the front end portion 27. The lock hole 31 is configured such that the first groove portion 26 and the second groove portion 28 communicate with each other and penetrate vertically. As shown in FIG. 9, when the two housings 10 and 40 are properly fitted, the mating lock portion 44 is fitted into the lock hole 31, and the both housings 10 and 40 are held in a state of being restricted. .

  As shown in FIG. 12, a front stop portion 32 is provided on the front side and a back stop portion 33 is provided on the rear side of both sides of the lock arm body 25 with the lock hole 31 interposed therebetween. As shown in FIG. 10, the front stop portion 32 is a front surface of the lock hole 31 and a rear surface of the front end portion 27 of the lock arm main body 25, and closes the front end of the first groove portion 26. As shown in FIG. 5, the rear stop portion 33 is formed on the rear surface of the lock hole 31 and the front surface of the lower wall portion 29 of the lock arm body 25, and closes the rear end of the second groove portion 28. For this reason, as shown in FIG. 10, the front stop portion 32 and the rear stop portion 33 are divided into an upper portion and a lower portion of the lock arm main body 25, respectively, and are arranged so as to be displaced from each other in the vertical direction.

  Both the front stop portion 32 and the rear stop portion 33 (excluding the back surface of the concave portion 30) are arranged along the vertical direction. When the detection member 60 is in the standby position, a locking portion 72 of a locking arm 62, which will be described later, abuts against the front locking portion 32 to restrict the forward movement of the detection member 60 (see FIG. 10). Retraction of the detection member 60 is regulated by contacting the portion 33 (see FIG. 5). The front stop portion 32 is formed by drawing a mold (not shown) for forming the first groove portion 26 rearward, and the rear stop portion 33 is a mold (not shown) for forming the second groove portion 28. Is formed by being pulled forward.

  As shown in FIGS. 1 and 2, a pair of side wall portions 34 that divide both side surfaces of the first groove portion 26 and the second groove portion 28 are provided at both left and right end portions of the lock arm main body 25. A pair of guide walls 35 extending in the front-rear direction are provided upright on the inner edge side facing the first groove portion 26 on the upper surface of the side wall portions 34. As shown in FIG. 7, the guide wall 35 has a rectangular plate-like shape in a side view extending in the front-rear direction from the front end of the lock arm body 25 to a movement restricting portion 36 described later, and has a substantially constant height over the entire length. It is composed of a size. When the detection member 60 is assembled to the housing 10, the locking arm 62 of the detection member 60 is disposed between the guide walls 35 (see FIGS. 1 and 2), and the bending operation of the locking arm 62 is caused by the guide walls 35. Can be guided by. The front end portion 27 of the lock arm main body 25 has a block shape, extends in the left-right direction, and spans between the front end portions of the side wall portions 34 (see FIG. 12). Further, the lower wall portion 29 of the lock arm main body 25 has a plate-like shape, extends in the left-right direction, and is bridged between portions near the front end portions of the side wall portions 34 (see FIG. 12).

  As shown in FIG. 7, a movement restricting portion 36 is provided at the rear end portion of the lock arm main body 25. The movement restricting portion 36 has a plate-like shape that defines the upper surface of the rear end portion of the first groove portion 26, extends in the left-right direction, and is spanned between the guide walls 35. A receiving groove 37 is recessed on the upper surface of the movement restricting portion 36. The receiving groove 37 is configured to extend in the front-rear direction and open at the rear end of the movement restricting portion 36. The front surface of the receiving groove 37 is disposed so as to be inclined slightly rearward toward the upper end. An operation arm 66 (described later) of the detection member 60 can enter the receiving groove 37 of the movement restricting portion 36.

  As shown in FIGS. 4 and 11, a pair of outer walls 38 are provided upright on the left and right sides of the lock arm 23 on the upper portion of the fitting cylinder portion 12. A flat ceiling wall 39 is provided between the upper ends of the sections. The front side of the lock arm 23 is disposed in a space surrounded by the outer walls 38 and the ceiling wall 39, and is protected from external foreign matter.

  Next, the detection member 60 will be described. The detection member 60 is made of a synthetic resin, and is disposed in a space surrounded by the housing body 11, both outer side walls 38 and the ceiling wall 39 as shown in FIGS. 1 and 7. And the detection member 60 slides on the upper surface of the lock arm main body 25 and the groove surface of the 1st groove part 26, and a standby position (refer FIGS. 1-3, FIG. 5, FIG. 7, FIG. 8 and FIG. 10). And a detection position behind the standby position (see FIGS. 4, 6, and 9). As shown in FIGS. 13 to 15, the detection member 60 includes a base portion 61 extending in the front-rear direction and the left-right direction, a locking arm 62 extending forward from a center portion in the left-right direction of the base portion 61, and left and right sides of the base portion 61. A pair of extending cylindrical portions 63 extending forward from both ends in the direction, a pair of standing wall portions 64 rising upward from the upper end of the extending cylindrical portion 63 and extending in the front-rear direction, and both standing wall portions 64 And an operation arm 66 connected to a center portion in the front-rear direction of the upper end of the upper end of the upper end of the upper end of the upper end of the upper end of the upper end of the upper end of the upper end of the upper end of the upper and lower ends of the upper and lower ends of the upper and lower ends.

  A biasing member (not shown) is accommodated in the extending cylinder portion 63 along the front-rear direction. The urging member is constituted by a spring such as a compression coil spring that can be expanded and contracted in the front-rear direction, and both front and rear ends are supported by the front and rear end sides of the extended cylindrical portion 63. As shown in FIG. 15, an assembly port 68 for assembling the urging member is provided in the lower surface of the extension cylinder portion 63 so as to be opened. Further, a retaining protrusion 69 is provided on the lower surface of the extending tube portion 63 behind the assembly port 68. When the detection member 60 is in the detection position, the retaining projection 69 is locked to a projection receiving portion (not shown) of the housing 10, so that the detection member 60 is prevented from dropping backward from the housing 10. ing.

  As shown in FIG. 4, the operation arm 66 includes a flat plate-like pressing operation portion 70 having a substantially rectangular shape in plan view, and an engagement protrusion 71 protruding forward from the center in the left-right direction of the front end of the pressing operation portion 70. Both support portions 65 are connected to the left and right ends on the front end side of the pressing operation portion 70, and the operation arm 66 is swingably displaceable (elastically displaceable) in a seesaw shape with both support portions 65 as the center.

  As shown in FIG. 7, the engagement protrusion 71 is formed to be bent in a curved shape in a forward downward direction after protruding forward from the front end of the pressing operation unit 70. When the detection member 60 is in the detection position, the front end edge of the engagement protrusion 71 enters the receiving groove 37 of the movement restricting portion 36 and is disposed so as to be in contact with the front surface of the receiving groove 37. Movement to the standby position is restricted. 8 and 9, the engagement protrusion 71 is omitted.

  Further, when the pressing operation unit 70 is pressed downward, the operation arm 66 swings in a seesaw shape, the engagement protrusion 71 is separated from the receiving groove 37, and the detection member 60 can be moved to the standby position. Become. For this reason, the detection member 60 is prevented from accidentally moving from the detection position to the standby position. On the other hand, when the detection member 60 is in the detection position, the mating lock portion 44 is fitted into the lock hole 31 of the lock arm main body 25 and the both housings 10 and 40 are properly fitted, but the pressing operation portion 70 is downward. When pressed, the rear end portion of the lock arm main body 25 is also pressed downward, the front end portion 27 of the lock arm main body 25 is lifted, and the engagement between the front end portion 27 of the lock arm main body 25 and the counterpart lock portion 44 is released. Thus, both housings 10 and 40 can be detached.

  As shown in FIGS. 7 and 13, the locking arm 62 has a cantilevered substantially prismatic shape extending elongated forward from the front end of the base 61, and can be bent and deformed in the vertical direction with the front end of the base 61 as a fulcrum. Has been. As shown in FIGS. 13 and 15, a locking portion 72 is provided on the front end side of the locking arm 62. The locking portion 72 includes a tip locking portion 73 that is integrally continuous from an intermediate portion of the locking arm 62, and a locking protrusion 74 that protrudes downward from the tip locking portion 73. As shown in FIG. 10, the front surface of the distal end locking portion 73 is disposed along the vertical direction, and can contact the front stop portion 32 of the lock arm body 25 when the detection member 60 is in the standby position. ing.

  The locking projection 74 is disposed at a position that is recessed backward from the front surface of the tip locking portion 73. As shown in FIG. 10, the locking projection 74 includes a trapezoidal locking main body 75 that is substantially trapezoidal in a side view, and a plate-shaped protruding portion 76 that protrudes rearward from the center in the left-right direction on the rear surface of the locking main body 75. Become. As shown in FIGS. 5 and 10, when the detection member 60 is in the standby position, the locking projection 74 is disposed so as to be able to come into contact with the rear stop portion 33 of the lock arm main body 25 from the front, thereby detecting the detection member 60. Retreat (movement to the detection position) is restricted. The rear surface of the locking main body 75 (excluding the rear surface of the protruding portion 76) is disposed along the vertical direction, and can come into contact with the rear stopper 33 of the lock arm main body 25 in the standby position.

  As shown in FIG. 10, the front surface of the locking main body 75 is a slope inclined backward toward the lower end, and faces the second groove portion 28 in the standby position, and is exposed and disposed forward. As shown in FIGS. 5 and 10, the locking main body 75 is provided with a relief groove 77 extending rearward from the front surface. The escape groove 77 has a slit groove shape extending in the vertical direction, and is also opened on the lower surface of the locking body 75. Then, the projecting piece portion 46 of the mating lock portion 44 can enter and escape into the escape groove 77 in the process of fitting the housings 10 and 40 together.

  As shown in FIG. 10, the protruding portion 76 has a rib shape extending in the front-rear direction, and is arranged so that the rear surface is inclined slightly rearward toward the lower end. When the detection member 60 is in the standby position, the projecting portion 76 enters the recess 30, and the rear surface of the projecting portion 76 is disposed so as to be able to face and contact the inner surface of the recess 30.

  Further, as shown in FIGS. 10 and 13, the detection member 60 is provided with a contact portion 78 that protrudes forward after rising from the distal end locking portion 73 of the locking arm 62. The contact portion 78 has a plate-like shape extending in the front-rear direction in a stepped manner with the upper surface of the locking arm 62. The lower surface of the contact portion 78 is disposed along the front-rear direction at substantially the same height as the upper surface of the locking arm 62, and when the detection member 60 is in the standby position, the upper surface of the front end portion 27 of the lock arm main body 25. It is possible to contact and face. Further, as shown in FIG. 10, the lower surface of the contact portion 78 is connected to the front surface of the tip locking portion 73 at a substantially right angle, and forms a rectangular recess 79 having a substantially L-shaped cross section with the front surface of the tip locking portion 73. ing. When the detection member 60 is in the standby position, the upper corner portion of the front end portion 27 of the lock arm body 25 is fitted in the corner recess 79. The upper surface of the contact portion 78 is disposed along the front-rear direction, and the rear surface of the contact portion 78 is disposed so as to tilt forward from the upper surface of the locking arm 62 to the upper surface of the contact portion 78. A region behind the rear surface of the contact portion 78 in the detection member 60 is opened as a relief space 80.

Next, the operation of the connector of this embodiment will be described.
Prior to the fitting of the two housings 10 and 40, the detection member 60 is inserted into the housing 10 from the rear and assembled in the standby position. In the process in which the detection member 60 moves to the standby position, the locking arm 62 is inserted into the first groove portion 26 between the guide walls 35 of the lock arm main body 25, and the locking projection 74 comes into contact with the lower wall portion 29. The locking arm 62 is bent upward and deformed. When the detection member 60 reaches the standby position, the locking arm 62 is elastically restored, and as shown in FIG. 10, the locking portion 72 is fitted into the lock hole 31, and the front surface of the tip locking portion 73 is the lock arm main body. 25 is arranged so as to be able to come into contact with the front stop portion 32 from behind, and the lower surface of the contact portion 78 is arranged so as to be able to come into contact with the front end portion 27 of the lock arm body 25 from above, and is locked to the corner recess 79. The upper corner portion of the front end portion 27 of the arm body 25 is fitted in a positioned state. Further, at the standby position, the rear surface of the locking projection 74 (including the rear surface of the protruding portion 76) is disposed so as to be able to come into contact with the rear stop portion 33 (including the inner surface of the recess 30) from the front. The Thereby, the detection member 60 is hold | maintained in the state in which the movement to the front-back both directions was controlled in the stand-by position.

  In a state where the detection member 60 is held at the standby position with respect to the housing 10, the movement restricting portion 36 of the lock arm 23 enters the escape space 80 of the detecting member 60, and the movement restricting portion 36 and the contact portion 78 are moved up and down. They are arranged to overlap each other in the direction (see FIG. 7). Further, at the standby position, as shown in FIG. 2, both guide walls 35 are arranged to face both the left and right sides of the locking arm 62 so as to cover both side surfaces of the locking arm 62. At this time, the locking arm 62 is entirely covered by the guide walls 35 and is hidden by the guide walls 35 in a side view (see FIG. 7). Further, the guide walls 35 are arranged in the vicinity of the side of the locking arm 62 that is bent and deformed, whereby the bending operation of the locking arm 62 is guided, and the locking arm 62 is laterally (widthwise). Swing is prevented. Further, in the standby position, the urging force is accumulated by the urging member being pressed against the mating housing 40 from the front and elastically contracted, and the rear surface of the locking projection 74 is the rear stop 33 of the lock arm body 25. Is closely pressed against.

  Subsequently, as shown in FIG. 7, the housing main body 11 of the housing 10 is fitted into the hood portion 41 of the mating housing 40. In the process of fitting the two housings 10 and 40, as shown in FIG. 8, the inclined edge 47 of the projecting piece 46 of the mating lock portion 44 slides on the front end portion 27 of the lock arm main body 25. 25 is bent upward and the front end portion 27 rides on the inclined edge 47. At this time, the abutment portion 78 abuts against the front end portion 27 of the lock arm body 25 from above, and the upper corner portion of the front end portion 27 of the lock arm body 25 is fitted into the corner recess 79 so that the locking arm 62 is engaged. Is substantially integrated with the lock arm main body 25, so that the locking arm 62 bends upward and deforms in conjunction with the lock arm 23. Further, in the process of fitting the housings 10 and 40, the projecting piece 46 of the mating lock portion 44 can enter the escape groove 77 of the locking projection 74 from the front, whereby the mating lock portion 44 is Interference with the locking projection 74 is avoided. For this reason, in the fitting process of both the housings 10 and 40, it is prevented that the latching protrusion 74 comes out of the lock hole 31, and the state where the detection member 60 is hold | maintained at a standby position is ensured.

  When the two housings 10 and 40 are properly fitted, the lock arm 23 is elastically restored, and the mating lock main body 45 of the mating lock portion 44 is fitted into the lock hole 31 from below, and accordingly the locking portion 72 is Pushed out by the mating lock portion 44, the locking arm 62 is bent and deformed, and the locking projection 74 is separated from the rear stop portion 33. Thus, the locking of the locking arm 62 and the lock arm 23 is released. Further, at the same time when the locking projection 74 is separated from the rear stop portion 33, the urging force of the urging member is released, and the detection member 60 is retracted to automatically reach the detection position (see FIG. 9). Further, the mating lock main body 45 of the mating lock portion 44 is disposed so as to be able to abut on the front stop portion 32 of the lock arm main body 25, whereby the housings 10 and 40 are held in a state of being restricted from being detached.

  When the detection member 60 reaches the detection position, the projecting piece portion 46 of the mating lock portion 44 enters the recess 30 of the lower wall portion 29 and escapes, and the locking arm 62 enters the space behind the lower wall portion 29. 6 (see FIG. 6), and the front end edge of the engaging protrusion 71 of the operation arm 66 is elastically fitted into the receiving groove 37 of the movement restricting portion 36 (see FIG. 4), and the retaining protrusion 69 is the housing. 10 is engaged with a projection receiving portion (not shown). Thereby, the detection member 60 is hold | maintained in the state by which the movement to the front-back both directions was controlled at the detection position. Further, even in the detection position, the locking arm 62 is entirely covered with both guide walls 35 from the side, and is kept hidden by the guide walls 35 in a side view (see FIG. 9). ).

  On the other hand, if the housings 10 and 40 are not properly fitted, the locking part 44 does not reach the position where the locking hole 44 is fitted into the lock hole 31, and the locking projection 74 of the locking arm 62 is the locking part 33 of the lock arm body 25. Therefore, the detection member 60 remains in the standby position. Therefore, if the detection member 60 is in the standby position, the housings 10 and 40 are not properly fitted, and if the detection member 60 is in the detection position, it is determined that the housings 10 and 40 are properly fitted. Can do.

  As described above, according to this embodiment, when the detection member 60 is in the standby position, the locking portion 72 enters the lock hole 31, and the front surface of the tip locking portion 73 is in front of the lock arm body 25. The forward movement of the detection member 60 is restricted by abutting against the stop portion 32, and the backward movement of the detection member 60 is restricted when the rear surface of the locking projection 74 abuts against the rear stop portion 33 of the lock arm body 25. In this case, since the front stop portion 32 and the rear stop portion 33 are arranged on both front and rear sides with the lock hole 31 in between, the lock hole 31 is shared so that the detection member 60 at the standby position moves forward and backward. It can be regulated with a simple structure. In particular, the locking portion 72 is locked to the lock arm body 25 by the rear surface of the locking protrusion 74 being held against the locking portion 33 of the lock arm body 25 against the biasing force of the biasing member. The stable state can be maintained.

  In addition, the front stop portion 32 and the rear stop portion 33 are arranged so as to be displaced from each other in the vertical direction, and the front stop portion 32 is formed together with the first groove portion 26 by a mold that is pulled out rearward, and the rear stop portion 33 is moved forward. Since the mold is drawn together with the second groove portion 28, the height range of the front stop portion 32 (the engagement with respect to the front surface of the front end locking portion 73) is set to the height range of the rear stop portion 33 (as described above). It is possible to make adjustments such as making it larger than the allowance for the rear surface of the locking projection 74, and the degree of freedom in design is high.

  Further, when the detection member 60 is in the standby position, the contact portion 78 contacts the front end portion 27 of the lock arm main body 25 from above, so that the front end portion 27 of the lock arm main body 25 interferes with the counterpart lock portion 44. The contact portion 78 can also move upward as it moves upward, and the bending operation of the locking arm 62 can be synchronized with the bending operation of the lock arm 23. Therefore, the integrity of the lock arm 23 and the detection member 60 is ensured. Further, since the contact portion 78 is formed so as to protrude forward after rising from the distal end locking portion 73 of the locking arm 62, as described above, the rear region (relief space 80) of the contact portion 78 in the detection member 60 is formed. The movement restricting portion 36 can be provided in the form of entering (). As a result, the degree of freedom in designing the lock arm 23 can be increased. In addition, since the movement restricting portion 36 and the abutting portion 78 are arranged at positions where they overlap each other in the vertical direction, it is possible to avoid a tall connector as a whole.

  Further, in the process of fitting the two housings 10 and 40, the protruding piece 46 can enter the escape groove 77 of the locking projection 74, and interference between the mating lock portion 44 and the locking projection 74 is avoided. Therefore, it is possible to prevent the locking portion 72 from inadvertently coming out of the lock hole 31 and to maintain the locking between the locking arm 62 and the lock arm 23 well. As a result, the reliability of the fitting detection by the detection member 60 can be improved. In particular, in the case of the present embodiment, the front surface of the locking projection 74 is exposed at a position facing the mating lock portion 44, so that the locking projection 74 is in the process of fitting the housings 10, 40. There is a circumstance that the front surface is likely to hit the inclined edge 47 of the counterpart lock portion 44. Therefore, by providing the escape groove 77 in the locking projection 74, there is a great merit that it is possible to avoid interference between the mating lock portion 44 and the locking portion 72.

  Further, regardless of whether the detection member 60 is in the standby position or the detection position, both guide walls 35 of the lock arm 23 are arranged so as to cover both side surfaces of the lock arm 62 and the locking arm 62 is bent. Therefore, it is possible to prevent the locking arm 62 from swinging to the side (width direction) during the bending operation. As a result, the bending operation of the locking arm 62 is smoothly performed, and the reliability of the fitting detection by the detection member 60 can be improved. In addition, the locking arm 62 is not visible from the side by the guide wall 35 regardless of whether the detection member 60 is in the standby position or the detection position. It is kept in a state protected from external foreign matter by 35.

<Other embodiments>
Other embodiments will be briefly described below.
(1) The detection member may advance from the standby position to the detection position with respect to the housing.
(2) The urging member may not be housed inside the detection member, and the detection member may be manually moved between the standby position and the detection position.
(3) The lock arm may be provided with a structure other than the movement restricting portion at a position overlapping the contact portion in the vertical direction.
(4) One or both of the front stopper part and the rear stopper part may be arranged to be inclined with respect to the vertical direction.
(5) The relief groove may be configured to penetrate the locking protrusion in the front-rear direction.
(6) The present invention can also be applied to a non-waterproof type connector in which no seal ring is attached to the housing and no rubber plug is connected to the terminal fitting.

DESCRIPTION OF SYMBOLS 10 ... Housing 11 ... Housing main body 23 ... Lock arm 25 ... Lock arm main body 26 ... 1st groove part 27 ... Front end part (of lock arm) 28 ... 2nd groove part 31 ... Lock hole 32 ... Front stop part 33 ... Back stop part 35 ... Guide wall 36 ... Movement restricting part 40 ... mating housing 44 ... mating lock part 46 ... projecting piece part 47 ... tilted edge 60 ... detecting member 62 ... locking arm 72 ... locking part 77 ... escape groove 78 ... contacting part 80 ... Relief space

Claims (2)

A mating housing having a mating lock portion;
A housing that can be fitted to the mating housing, and a lock arm that extends in the front-rear direction;
It is assembled to the housing so as to be movable in the front-rear direction between the standby position and the detection position, and includes a detection member provided with a locking arm extending in the front-rear direction,
A lock hole is provided at a position facing the front end of the lock arm, and a lock is provided at the front end of the lock arm.
In the fitting process of the two housings, the lock arm is bent and deformed by the front end of the lock arm interfering with the mating lock part, and the engaging part enters the lock hole, thereby engaging the engagement. A stop arm is locked to the lock arm, and the detection member is kept in the standby position,
When the fitting of the two housings is completed, the mating lock part is fitted into the lock hole and pushes the locking part in accordance with the return operation of the lock arm, whereby the locking arm is engaged with the lock arm. A connector that is bent and deformed in a direction to release the stop, allows movement of the detection member to the detection position, and is held in a state where both the housings are restricted from being detached. ,
The locking arm is arranged so as to cover both side surfaces of the locking arm regardless of whether the detection member is in the standby position or the detection position. A connector characterized in that a pair of guide walls capable of guiding the guide is provided.   2. The locking arm is in a state where it cannot be seen from the side by the pair of guide walls regardless of whether the detection member is in the standby position or the detection position. Connector.

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