JP2013105658A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress that a retainer comes off from a connector housing when the retainer is moved from a main engagement position to a temporary engagement position.SOLUTION: A connector 10 includes: a connector housing 20 which stores a female terminal; and a retainer 40 which has a lock piece 46 which can be elastically deformed, and is inserted into a retainer attachment hole 23 of the connector housing 20, in which the retainer 40 can move between a temporary engagement position which is saved from an approach path of the female terminal and a main engagement position for approaching the approach path of the female terminal. The lock piece 46 includes: a main engagement claw 48 which holds the retainer 40 at the main engagement position by being engaged from a lower part by a main engagement projection 27; and a temporary engagement claw 47 which holds the retainer 40 at the temporary engagement position by being engaged from the lower part by a temporary engagement projection 28, an amount that the lock piece 46 elastically deforms and the temporary engagement claw 47 is displaced is smaller than an amount that the main engagement claw 48 is displaced.

Description

  The present invention relates to a connector.

2. Description of the Related Art Conventionally, a connector described in Patent Document 1 below is known as a connector including a retainer that prevents a terminal fitting housed in a connector housing from coming off.
The retainer is inserted into a retainer insertion hole provided at the bottom of the connector housing. The retainer prevents the terminal fitting from coming off, and elastically outwards in the width direction on both sides in the width direction of the retainer. And a pair of deformable lock pieces.
The pair of locking pieces is selectively selected from either the temporary locking projections formed on both sides of the connector housing in the width direction and the final locking projections formed on the inner side of the locking piece in the insertion direction of the locking pieces. It is formed so that it can be locked to. Then, the locking piece and the temporary locking protrusion are elastically locked, so that the retaining portion is retracted from the entry path of the terminal fitting, and the retaining portion is held at the temporary locking position where the terminal fitting can be inserted and removed. The In addition, the lock piece and the main locking projection are elastically locked, so that the terminal fitting housed in the connector housing is locked from the rear so that the terminal fitting is locked from the rear locking position. The retaining portion is held.

JP 2003-229197 A

By the way, when the retainer is moved from the final locking position to the temporary locking position for maintenance, the locking piece is elastically deformed to release the locking state with the main locking projection, and the locking piece and the temporary locking position are released. Lock the protrusion.
However, when a large force is applied to the retainer when moving from the final locking position to the temporary locking position, the lock piece that has elastically deformed and overcame the main locking projection is temporarily returned before elastic recovery. There is also a risk that the locking projection will also get over and the retainer will be excessively detached from the connector housing.

  The present invention has been completed based on the above circumstances, and it is possible to prevent the retainer from being detached from the connector housing when the retainer is moved from the main locking position to the temporary locking position. Objective.

  As means for achieving the above-mentioned object, the present invention comprises a connector housing that houses a terminal fitting, and a retainer that has an elastically deformable lock piece and is inserted into a retainer mounting hole of the connector housing, Between the temporary locking position at which the terminal fitting can be inserted and removed by retreating from the entry path of the terminal fitting, and the final locking position at which the terminal fitting enters the entry path of the terminal fitting to prevent the terminal fitting from being removed. The retainer is a movable connector, and the lock piece is locked from the opening side of the retainer mounting hole toward the back side of the retainer mounting hole by a main locking projection formed on the inner surface of the retainer mounting hole. A retainer claw for holding the retainer at the final engagement position, and the retainer is formed to be shifted in a direction intersecting the insertion direction of the retainer with respect to the final engagement claw. The temporary retaining protrusion formed on the inner surface of the landing hole is locked from the opening side of the retainer mounting hole toward the back side of the retainer mounting hole, thereby temporarily holding the retainer at the temporary locking position. The retainer moves from the fully-locked position to the temporarily-locked position when the lock-claw rides on the fully-locked protrusion and the lock piece is elastically deformed. In this case, the amount by which the lock piece is elastically deformed and the temporary locking claw is displaced is smaller than the amount by which the main locking claw is displaced.

  According to the connector having such a configuration, since the main locking claw and the temporary locking claw are formed so as to be shifted, the lock piece is elastically deformed when the retainer is moved from the main locking position to the temporary locking position. The position of the temporary locking claw is the side where the final locking claw is formed, and the amount of displacement of the temporary locking claw when the locking claw rides on the final locking projection and the lock piece is elastically deformed is the displacement of the final locking claw. Smaller than the amount. Thereby, the lock piece on the side where the temporary locking claw is formed is not elastically deformed so that the temporary locking claw and the temporary locking protrusion are released, and the lock piece is released from the main locking protrusion. It is possible to suppress the momentary release from the temporary locking projection. As a result, when the retainer is moved from the final locking position to the temporary locking position, the retainer can be prevented from being detached from the connector housing.

The following configuration is preferable as an embodiment of the present invention.
The temporary locking projections and the final locking projections are formed so as to protrude in the width direction of the connector housing, and the engagement margin between the temporary locking projections and the lock pieces is between the main locking projections and the locks. It is good also as a structure larger than the allowance with a piece.
According to such a configuration, in order to release the engagement between the temporary engagement protrusion and the lock piece, it is necessary to further elastically deform the lock piece than when the engagement between the main engagement protrusion and the lock piece is released. Therefore, it is possible to further suppress the lock piece released from the main locking protrusion from being released from the temporary locking protrusion due to excessive momentum.

The lock piece is formed in a flat plate shape that rises from a bottom plate portion of the retainer, and a portion of the lock piece closer to the base end than the main locking claw is closer to the base end than the temporary locking claw It is good also as a structure currently formed thickly compared with this part.
According to such a configuration, it is possible to increase the rigidity of the portion closer to the base end portion than the main locking claw in the lock piece as compared to the portion closer to the base end portion than the temporary locking claw in the lock piece. Therefore, it is possible to make it difficult for the lock piece to elastically deform in the direction in which the locked state between the main locking claw and the main locking protrusion is released. Thereby, it is possible to improve the retaining force of the retainer at the main locking position where the engagement is shallower than the temporary locking position.

The temporary locking claw and the main locking claw may be formed integrally and continuously in a direction intersecting the insertion direction of the retainer.
According to such a configuration, the strength of the lock piece as a whole is increased as compared with the case where the temporary locking claw and the main locking claw of the lock piece are formed separately in a direction intersecting the retainer insertion direction. In addition, the length dimension in the direction intersecting the insertion direction of the retainer can be reduced.

The lock piece is divided and formed in a direction intersecting the insertion direction of the lock piece, and the temporary locking claw is formed on one of the divided locking pieces, and the main locking claw May be formed on the other of the divided lock pieces.
According to such a configuration, the lock piece in which the temporary locking claw is formed and the lock piece in which the main locking claw is formed can be elastically deformed independently, so that the main locking claw is formed. When the locking piece is elastically deformed and the locking state between the main locking claw and the main locking projection is released, the locking piece formed with the temporary locking claw is not elastically deformed, and the retainer When moving from the final locking position to the temporary locking position, it is possible to further suppress the retainer from being detached from the connector housing.

  According to the present invention, it is possible to prevent the retainer from being detached from the connector housing when the retainer is moved from the main locking position to the temporary locking position.

The side view which shows the state before a retainer is assembled | attached to the connector housing concerning Embodiment 1. FIG. The rear view which shows the state before a retainer is assembled | attached to the connector housing concerning Embodiment 1. FIG. The side view which shows the state by which the retainer was hold | maintained in the temporary latching state by the connector housing concerning Embodiment 1 AA line sectional view of FIG. The side view which shows the state by which the retainer was hold | maintained in the main latching state by the connector housing concerning Embodiment 1 The rear view which shows the state by which the retainer was hold | maintained in the main latching state by the connector housing concerning Embodiment 1 BB sectional view of FIG. The bottom view of the connector housing concerning Embodiment 1 The perspective view of the retainer concerning Embodiment 1. The top view of the retainer concerning Embodiment 1. The rear view of the retainer concerning Embodiment 1. The side view which shows the state by which the retainer was hold | maintained to the connector housing concerning Embodiment 2 in the temporary latching state. CC sectional view of FIG. DD sectional view of FIG. The side view which shows the state by which the retainer was hold | maintained by the connector housing concerning Embodiment 2 in this latching state EE sectional view of FIG. FF sectional view of FIG. The perspective view of the retainer concerning Embodiment 2. FIG. Plan view of the retainer according to the second embodiment.

<Embodiment 1>
Embodiment 1 of the present invention will be described with reference to FIGS.
This embodiment illustrates the connector 10 including a connector housing 20 made of synthetic resin and a retainer 40 made of synthetic resin that prevents a female terminal (not shown) housed in the connector housing 20 from coming off.

As shown in FIGS. 1 to 4, the connector housing 20 is roughly formed in a vertically long block shape in the front-rear direction.
Inside the connector housing 20, a plurality of cavities 21 penetrating in the front-rear direction are formed side by side in the vertical direction and the width direction, and female terminals (not shown) can be accommodated from the rear in the cavity 21. ing. When the female terminal is accommodated in the cavity 21, the female terminal is locked from behind by a lance 22 that extends in a cantilevered manner from the inner wall of the cavity 21, and is prevented from falling into the cavity 21. .

  As shown in FIG. 8, a retainer mounting hole 23 is formed at a substantially central portion in the front-rear direction on the bottom surface of the connector housing 20. An opening portion of the retainer mounting hole 23 is formed in a substantially U shape, and the retainer mounting hole 23 includes a retaining portion accommodating portion 24 that is horizontally long in the width direction, and rearward from both ends of the retaining portion accommodating portion 24. It is comprised from a pair of lock part accommodating part 25 vertically long in the front-back direction extended.

  The retaining portion accommodating portion 24 is recessed upward from the bottom surface of the connector housing 20, and the internal space of the retaining portion accommodating portion 24 communicates with each cavity 21 of the connector housing 20.

  The pair of lock portion accommodating portions 25 are formed inside the side walls 20 </ b> A located at both end portions in the width direction of the connector housing 20. Specifically, as shown in FIGS. 4 and 8, the lock portion accommodating portions 25 are formed between the cavities 21 located at both ends in the width direction and both side walls 20 </ b> A of the connector housing 20. It is the form along the side. Further, like the retaining portion accommodating portion 24, the lock portion accommodating portion 25 has a shape recessed upward from the bottom surface of the connector housing 20.

On the other hand, the retainer 40 includes a retaining portion 41 that can be fitted into the retaining portion accommodating portion 24, and a pair of lock portions 42 that can be respectively fitted into the pair of locking portion accommodating portions 25. Yes.
As shown in FIGS. 9 to 11, the retaining portion 41 has a substantially U shape in rear view, and a plurality of substantially rectangular terminal insertion holes 43 penetrating in the front-rear direction are formed in the vertical direction and the width direction. Thus, it is formed in a lattice shape that is horizontally long in the width direction.

  Female terminals can be inserted in the terminal insertion holes 43 in the front-rear direction. Female terminals inserted into the cavities 21 of the connector housing 20 are formed on the bottom surfaces of the terminal insertion holes 43 and the top surfaces of the retaining portions 41. A plurality of terminal locking portions 44 for locking the mold terminals from the rear are formed corresponding to the cavities 21.

  Further, the retaining portion 41 has a main locking position for retaining the female terminal in the cavity 21 by locking the female terminal from behind by the terminal locking portion 44 protruding into the cavity 21 (see FIG. 6 and FIG. 7) and the terminal locking portion 44 retracts from the cavity 21 and can move between the temporary locking position (see FIG. 4) that allows the female terminal to be inserted into and removed from the cavity 21. Has been. Thus, when the retaining portion 41 is fitted to the final locking position in a state where the female terminal is accommodated in the cavity 21, the female terminal is locked from the rear by the terminal locking portion 44, and the female terminal is locked. The mold terminal is doubly locked by the lance 22 and the terminal locking portion 44.

  Further, as shown in FIGS. 3 and 4, the retainer 40 is in a state in which a part of the retaining portion 41 and the locking portion 42 protrude downward from the bottom surface of the connector housing 20 at the temporary locking position. In the stop position, as shown in FIG. 6 and FIG. 7, the connector housing 20 is fitted into the retainer mounting hole 23, and the bottom surface of the connector housing 20, the bottom surface of the retaining portion 41, and the bottom surface of the lock portion 42 are connected. It becomes almost flush.

  As shown in FIGS. 9 to 11, the pair of lock portions 42 has a flat plate shape and is formed adjacent to the rear of the retaining portion 41. The lock portion 42 includes a bottom plate portion 45 that extends rearward from both widthwise end portions of the retaining portion 41 and a lock piece 46 that rises upward from the bottom plate portion 45. In FIG. 9, the left front side of the page is the rear side, and the right back side of the page is the front side.

Each of the bottom plate portions 45 has a rectangular flat plate shape, and is formed integrally with the rear end portion of the retaining portion 41 in a form facing each other.
The lock piece 46 is formed in a rectangular flat plate shape that is thinner than the bottom plate portion 45. The lock piece 46 is integrally formed on the outer side in the width direction at the upper end edge of the bottom plate part 45, and can be elastically deformed outward in the width direction with a base end connected to the bottom plate part 45 as a fulcrum.

On the other hand, through holes 26 for releasing the elastically deformed lock pieces 46 are formed in both side walls 20A of the connector housing 20, respectively. As shown in FIG. 1, the through-hole 26 has a substantially rectangular shape that is vertically long in the front-rear direction, and penetrates the side wall 20A in the width direction as shown in FIGS. Is formed.
The front end of the lock piece 46 can enter the internal space of the through hole 26, and the front end of the lock piece 46 that elastically deforms outward in the width direction enters the internal space of the through hole 26. The piece 46 is allowed to elastically deform outward in the width direction.

  As shown in FIGS. 1, 4, and 7, the main locking projections 27 that hold the retainer 40 at the main locking position are formed on both inner walls on the cavity 21 side, which is the inner side in the width direction of the lock housing portion 25. And the temporary latching protrusion 28 which hold | maintains the retainer 40 in a temporary latching position is formed, respectively.

  The main locking projection 27 is formed to protrude outward in the width direction from the inner wall on the cavity 21 side, and has a form extending in the front-rear direction. Further, the main locking protrusion 27 has a substantially rectangular cross section, and the upper surface of the main locking protrusion 27 is a protrusion-side main locking surface 27A.

  Similar to the main locking projection 27, the temporary locking projection 28 is formed to protrude outward in the width direction from the inner wall on the cavity 21 side, and has a form extending in the front-rear direction. The temporary locking projection 28 is formed so as to protrude outward in the width direction from the final locking projection 27, and has a projection-side temporary locking surface 28A extending from the inner wall on the cavity 21 side in the width direction on the upper side. Then, after extending slightly downward from the outer end portion of the projection-side temporary locking surface 28A, it is configured to approach the cavity 21 as it extends downward.

  Further, the temporary locking projections 28 are arranged below the main locking projections 27 on the opening side of the lock portion accommodating portion 25, and the lengths of the temporary locking projections 28 in the front-rear direction are as follows. The length of the stop protrusion 27 is set to be substantially the same as the length dimension in the front-rear direction. Further, the temporary locking protrusion 28 is formed at a front end portion in a region rearward of the rear end position of the main locking protrusion 27, and the front end position of the temporary locking protrusion 28 is the rear end of the main locking protrusion 27. It is arranged at a position that overlaps the position in the vertical direction. That is, the main locking projection 27 and the temporary locking projection 28 are formed so as to be shifted in the front-rear direction and the vertical direction.

On the other hand, as shown in FIGS. 9 and 10, a temporary locking claw 47 that can be locked with the temporary locking projection 28 and a main locking mechanism that can be locked with the final locking projection 27 are provided at the upper edge of the lock piece 46. A pawl 48 is formed. Further, the temporary locking claw 47 and the main locking claw 48 are integrally formed continuously in the front-rear direction.
The temporary latching claw 47 has a form extending linearly from the rear end of the lock piece 46 toward the front, and is arranged on the rear side of the substantially central portion in the front-rear direction of the lock piece 46. The temporary locking claw 47 is formed so as to protrude inward in the width direction from the upper end edge of the lock piece 46, and the temporary locking surface 47 </ b> A, which is the lower surface of the temporary locking claw 47, The stop projection 28 can be locked with the projection-side temporary locking surface 28A. The temporary locking surface 47A is formed longer in the front-rear direction than the projection-side temporary locking surface 28A. When the temporary locking surface 47A and the projection-side temporary locking surface 28A are locked, the temporary locking surface 47A is provided. The entire stop surface 28A is set to come into surface contact with the temporary locking surface 47A.

The main locking claw 48 is formed on the front side of the substantially central portion in the front-rear direction of the lock piece 46. Further, the main locking claw 48 has a form extending linearly from the front end of the temporary locking claw 47 to the front end of the lock piece 46, and the length dimension of the main locking claw 48 in the front-rear direction is the temporary locking claw 48. 47 is set to be almost the same as the length dimension in the front-rear direction.
Similarly to the temporary locking claw 47, the final locking claw 48 is formed to protrude inward in the width direction from the upper end edge of the lock piece 46, and the protruding end of the final locking claw 48 has a temporary engagement. It is formed flush with the protruding end of the pawl.

  The lower surface of the main locking claw 48 is a main locking surface 48A that can be locked with the protrusion-side main locking surface 27A of the main locking projection 27, and the temporary locking surface 47A of the temporary locking claw 47. It is formed in the same plane. Further, the main locking surface 48A is formed longer in the front-rear direction than the projection side main locking surface 27A, and in the state where the main locking surface 48A and the projection side main locking surface 27A are locked, the protrusion side The entire locking surface 27A is set to come into surface contact with the main locking surface 48A.

  The main locking claw 48 rides on the main locking protrusion 27 when the retainer 40 moves between the temporary locking position and the main locking position. Then, the front half of the lock piece 46 formed with the main locking claw 48 is elastically deformed outward in the width direction, and the lock piece 46 elastically recovers when the main locking claw 48 gets over the main locking projection 27. That is, the lock piece 46 is elastically deformed outward in the width direction so as to expand obliquely forward and upward, and the rear half of the lock piece 46 on which the temporary locking pawls 47 are formed is hardly elastically deformed. The amount that the locking claw 47 is displaced outward in the width direction is smaller than the amount that the main locking claw 48 is displaced outward in the width direction.

  Then, the retaining portion 41 is disposed at the temporary locking position, and the temporary locking surface 47A is locked from below by the projection-side temporary locking surface 28A, whereby the retainer 40 is held at the temporary locking position, The retaining portion 41 is arranged at the final locking position, and the main locking surface 48A is locked from below by the projection side main locking surface 27A, so that the retainer 40 is held at the main locking position. It has become.

  Further, as shown in FIGS. 4 and 7, the amount that the temporary locking claw 47 protrudes inward in the width direction from the lock piece 46 is larger than the amount that the main locking claw 48 protrudes from the lock piece 46. In the state where the projection-side temporary locking surface 28A of the temporary locking protrusion 28 and the temporary locking surface 47A of the temporary locking claw 47 are locked at the temporary locking position, At the final locking position, the projection side main locking surface 27A of the main locking projection 27 and the main locking surface 48A of the main locking claw 48 are larger than the length dimension in the width direction of the engagement allowance. Is set to Thereby, the area where the projection side temporary locking surface 28A and the temporary locking surface 47A are locked can be made larger than the area where the projection side main locking surface 27A and the main locking surface 48A are locked. The holding force of the retainer 40 at the temporary locking position can be improved more than the holding force of the retainer 40 at the main locking position.

  Further, the portion closer to the base end than the main locking claw 48 in the lock piece 46 is formed thicker than the portion closer to the base end than the temporary locking claw 47 in the lock piece 46, The front end portion of the locking claw 48 is formed integrally with a reinforcing wall 49 that is formed to protrude inward in the width direction from the front end edge of the lock piece 46. That is, the rigidity of the front part of the lock piece 46 is higher than the rigidity of the rear part between the main locking claw 48 and the temporary locking claw 47, and the lock piece 46 is located at the final locking position. Can be made difficult to elastically deform outward in the width direction. As a result, the retaining force of the retainer 40 at the main locking position where the engaging margin between the main locking claw 48 and the main locking projection 27 is shallower than the engaging margin between the temporary locking claw 47 and the temporary locking projection 28. Can be improved.

The present embodiment is configured as described above. Next, a method for assembling the connector 10 will be briefly described, and the operation and effect thereof will be described.
First, the retainer 40 is fitted into the retainer mounting hole 23 from below the connector housing 20, and the retainer 40 is moved upward with respect to the connector housing 20. In this process, the temporary locking claw 47 of the lock piece 46 rides on the temporary locking protrusion 28, and the rear portion of the lock piece 46 is elastically deformed outward in the width direction with the base end portion of the lock piece 46 as a fulcrum. The lock piece 46 is elastically deformed outward in the width direction so as to expand obliquely upward.

  Then, when the temporary locking claw 47 riding on the temporary locking protrusion 28 gets over the temporary locking protrusion 28, the temporary locking surface 47A of the temporary locking claw 47 of the temporary locking protrusion 28 is formed as shown in FIG. The retainer 40 is held at the temporary locking position by being locked from below by the projection-side temporary locking surface 28A. In this state, the terminal locking portion 44 of the retaining portion 41 is retracted from the cavity 21, and the female terminal can be inserted into and removed from the cavity 21. Then, the female terminal is inserted into the cavity 21 from the rear, and the female terminal is inserted to the proper position, so that the female terminal is prevented from coming off into the cavity 21 by the lance 22.

  Next, the retainer 40 is moved further upward with respect to the connector housing 20. In this process, the main locking claw 48 of the lock piece 46 rides on the main locking projection 27, and the front portion of the lock piece 46 is elastically deformed outward in the width direction with the base end portion of the lock piece 46 as a fulcrum. 46 is elastically deformed outward in the width direction so as to expand obliquely forward and upward. At this time, the distal end portion of the lock piece 46 enters the internal space of the through hole 26 of the connector housing 20, and the lock piece 46 is allowed to elastically deform outward in the width direction.

  Then, when the main locking claw 48 of the lock piece 46 gets over the main locking projection 27, the lock piece 46 is elastically restored, so that the main locking surface 48A of the main locking claw 48 becomes as shown in FIG. The protrusion side main locking surface 27A of the main locking protrusion 27 is locked from below, and the retaining portion 41 is held at the main locking position. Further, in this state, the terminal locking portion 44 of the retaining portion 41 protrudes into the cavity 21, latches the female terminal from the rear, and prevents the female terminal from falling into the cavity 21. As a result, the female terminal is doubly locked by the lance 22 and the terminal locking portion 44, and the connector 10 is completed.

Next, the case where the retainer 40 is moved from the final locking position to the temporary locking position for maintenance or the like will be described.
When the retainer 40 is moved from the main locking position to the temporary locking position, a jig or the like is inserted between the retainer mounting hole 23 and the retainer 40 and the retainer 40 is pulled out from the retainer mounting hole 23 downward. Move. At this time, the lock piece 46 is in a state opposite to that when it is moved from the temporary locking position to the final locking position. That is, when the main locking claw 48 of the lock piece 46 rides on the main locking projection 27, the front side portion of the lock piece 46 is elastically deformed outward in the width direction, and the lock piece 46 expands obliquely forward and upward. And elastically deforms outward in the width direction. When the final locking claw 48 of the lock piece 46 gets over the final locking projection 27, the temporary locking surface 47A of the temporary locking claw 47 is engaged from below by the protruding side temporary locking surface 28A of the temporary locking projection 28. As shown in FIG. 4, the retaining portion 41 is held in the temporary locking position. That is, when the main locking claw 48 rides on the main locking protrusion 27, the lock piece 46 is elastically deformed outward in the width direction so as to expand obliquely forward and upward. Since the stop projection 28 is formed on the rear side of the lock piece 46, the amount of bending on the rear side of the lock piece 46 is small, and the temporary locking claw 47 and the temporary locking projection 28 are always locked with each other. It has become. Accordingly, the retainer 40 is always held with respect to the connector housing 20.

  By the way, when a jig or the like is inserted between the retainer mounting hole 23 and the retainer 40 and the retainer 40 is moved downward from the retainer mounting hole 23, a large force is applied to get over the locking protrusion 27. The lock piece 46 that has been elastically deformed may move to the temporary locking position before it is elastically restored. However, according to the present embodiment, the temporary locking claw 47 and the temporary locking projection 28 are formed so as to be shifted rearward from the final locking claw 48 and the final locking projection 27, so that the front portion of the lock piece 46 is formed. Even in the state where the elastically deformed outward in the width direction, the rear portion of the lock piece 46 does not become elastically deformed so that the temporary locking claw 47 and the temporary locking projection 28 are released. It is possible to suppress the temporary locking claw 47 from being released from the temporary locking protrusion 28 with the momentum at which the 48 and the main locking protrusion 27 are released. Thereby, even when a large force is applied to the retainer 40 in the downward direction, which is the removal direction, it is possible to suppress the retainer 40 from being excessively detached from the connector housing 20.

  As described above, according to the present embodiment, when the retainer 40 is moved from the main locking position to the temporary locking position, the position where the lock piece 46 is elastically deformed is the front side where the main locking claw 48 is formed. The amount of bending of the lock piece 46 on the rear side where the temporary locking claw 47 is formed becomes small. Thereby, the lock piece 46 on the rear side where the temporary locking claw 47 is formed is not elastically deformed so that the temporary locking claw 47 and the temporary locking projection 28 are released, and the lock piece 46 is not locked. It is possible to suppress the release from the temporary locking projections 28 with the momentum released from the locking projections 27.

  Further, according to the present embodiment, the engagement allowance between the temporary engagement protrusion 28 and the temporary engagement claw 47 is formed larger in the protruding direction than the engagement allowance between the final engagement protrusion 27 and the final engagement claw 48. Therefore, in order to unlock the temporary locking projection 28 and the temporary locking claw 47, the lock piece 46 is moved more than when the locking between the main locking projection 27 and the final locking claw 48 is released. It is necessary to further elastically deform outward in the width direction. Thereby, it can further suppress that the retainer 40 removes from the connector housing 20 excessively.

  Furthermore, according to the present embodiment, the temporary locking claw 47 and the final locking claw 48 are continuously formed integrally with the upper end edge of the lock piece 46, so that the temporary locking claw and the final locking claw Compared to the case where the lock pieces 46 are formed separately in the front-rear direction, the strength of the entire lock piece 46 can be increased, and the length dimension of the retainer in the front-rear direction can be reduced.

<Embodiment 2>
Next, a second embodiment of the present invention will be described with reference to FIGS.
The connector 110 according to the second embodiment is obtained by changing the lock portion accommodating portion 25 of the connector housing 20 and the lock portion 42 of the retainer 40 according to the first embodiment, and has the same configuration, operation, and effect as the above embodiment. Since these are redundant, the description thereof is omitted. Moreover, the same code | symbol shall be used about the same structure as the said embodiment.

The lock housing portion 125 of the connector housing 120 of the second embodiment has a form extending from both ends of the retaining portion housing portion 24 to the rear as well as the front, and the front lock portion housing portion 125 is It is set shorter than the rear lock portion accommodating portion 125.
Further, as shown in FIG. 12, the main locking projection 127 and the temporary locking projection 128 of the lock portion accommodating portion 125 are divided into a front side and a rear side of the lock portion accommodating portion 125. Further, as shown in FIGS. 13 and 14, the main locking projection 127 and the temporary locking projection 128 are reversed in the front-rear direction on the left side and the right side of the connector housing 120. Has been placed. Specifically, as shown in FIG. 13, a temporary locking protrusion 128 is formed at a position on the left side in the drawing, and a main locking protrusion 127 is formed at a position on the right side in the drawing, on the front side of the lock portion accommodating portion 125. Further, as shown in FIG. 14, on the rear side of the lock portion accommodating portion 125, a main locking projection 127 is formed at a position on the left side in the drawing, and a temporary locking projection 128 is formed at a position on the right side in the drawing.

  On the other hand, as shown in FIGS. 18 and 19, the lock portion 142 of the retainer 140 extends from the both ends of the retaining portion 41 not only to the rear but also to the front. It is set shorter than the lock part 142 on the rear side. Further, a temporary locking claw 147 or a final locking claw 148 is individually formed on the lock piece 146 of each lock portion 142. Specifically, a temporary locking claw 147 is formed on the left side of the lock piece 146 located on the front side in the figure, and the lock piece 146 located on the front side is locked on the right side of the lock piece 146 located on the lower side in the figure. A nail 148 is formed. Further, a locking claw 148 is formed on the left side of the locking piece 146 located on the upper side in the drawing, and a temporary engagement is provided on the right side of the locking piece 146 located on the rear side in the lower side of the drawing. A pawl 147 is formed. In other words, the main locking claw 148 and the temporary locking claw 147 are arranged in the reverse direction on the left side and the right side of the retainer 140 so as to correspond to the main locking projection 127 and the temporary locking projection 128 of the connector housing 120. Yes.

  When the retainer 140 moves between the temporary locking position and the main locking position with respect to the connector housing 120, the main locking claws 148 of the lock pieces 146 positioned at the front right side and the rear left side are locked by the main locking claw 148. The lock piece 46 on the right front and left rear elastically deforms outward in the width direction with the base end as a fulcrum. When the temporary locking position is reached, as shown in FIGS. 13 and 14, the front left and right rear temporary locking claws 147 are locked from below by the temporary locking protrusions 128, and the retainer 140 is temporarily locked. Held in position. Further, when the main locking position is reached, as shown in FIGS. 16 and 17, the right front and left rear main locking claws 148 are locked from below by the main locking projections 127, and the retainer 140 is temporarily locked. Held in position.

  That is, according to the present embodiment, since the main locking claw 148 and the temporary locking claw 147 are all formed independently, the retainer 140 moves between the temporary locking position and the final locking position. In doing so, the lock piece 146 positioned on the left front side and on the right rear side can be elastically deformed independently only on the lock piece 146 positioned on the right front side and on the left side without elastic deformation. Thus, when the retainer 140 is moved from the final locking position to the temporary locking position, the lock piece 146 on which the temporary locking claw 147 is formed is not elastically deformed, and the retainer 140 is released from the main locking protrusion 127. It is possible to suppress the momentary release from the temporary locking projection 128.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the first embodiment, the temporary locking projection 28 and the temporary locking claw 47 are formed on the rear side of the final locking projection 27 and the final locking claw 48. However, the present invention has such a configuration. For example, the temporary locking projection 28 and the temporary locking claw 47 may be formed on the front side of the final locking projection 27 and the final locking claw 48.
(2) In the above embodiment, the temporary locking protrusion 28 and the main locking protrusion 27 are formed on the inner wall on the cavity 21 side of the lock housing portion 25, and the lock piece 46 is configured to be elastically deformable outward in the width direction. The present invention is not limited to such an embodiment. For example, the temporary locking protrusion and the main locking protrusion are formed on the inner wall located outside the lock portion accommodating portion, and the lock piece is elastically inward in the width direction. You may form so that a deformation | transformation is possible.
(3) In the second embodiment, the positions of the temporary locking projections 28 and the final locking projections 27 and the temporary locking claws 47 and the final locking claws 48 are front and rear on the left and right sides of the connector housing 120 and the retainer 140. Although the arrangement is reversed, the present invention is not limited to such an embodiment. For example, the temporary locking projection and the final locking projection, and the temporary locking claw and the final locking claw The positions may be the same on the left and right sides of the connector housing and retainer.

10, 110: Connector 20, 120: Connector housing 46, 146: Lock piece 23: Retainer mounting hole 40, 140: Retainer 27, 127: Main locking projection 48, 148: Main locking claw 28, 128: Temporary locking Protrusions 47 and 147: Temporary locking claws

Claims (5)

A connector housing that accommodates the terminal fitting, and a retainer that has an elastically deformable lock piece and is inserted into the retainer mounting hole of the connector housing;
Between the temporary locking position at which the terminal fitting can be inserted and removed by retreating from the entry path of the terminal fitting, and the final locking position at which the terminal fitting enters the entry path of the terminal fitting to prevent the terminal fitting from being removed. A retainer is a movable connector,
The lock piece is locked from the opening side of the retainer mounting hole toward the back side of the retainer mounting hole by a main locking projection formed on the inner surface of the retainer mounting hole, thereby holding the retainer in the main engagement. This locking claw to hold in the stop position;
The retainer mounting hole is formed from the opening side of the retainer mounting hole by a temporary locking projection formed on the inner surface of the retainer mounting hole. A temporary locking claw that holds the retainer in the temporary locking position by being locked toward the back side of
The lock piece is elastically deformed when the retainer moves from the final lock position to the temporary lock position by the lock piece elastically deforming when the main lock claw rides on the main lock protrusion. The amount of displacement of the temporary locking claws is smaller than the amount of displacement of the main locking claws. The temporary locking protrusion and the main locking protrusion are formed to protrude in the width direction of the connector housing,
The connector according to claim 1, wherein an engagement margin between the temporary engagement protrusion and the lock piece is larger than an engagement allowance between the main engagement protrusion and the lock piece. The lock piece is formed in a flat plate shape rising from the bottom plate portion of the retainer,
The portion of the lock piece closer to the base end portion than the main locking claw is formed thicker than the portion closer to the base end portion than the temporary locking claw. The connector according to claim 1 or 2.   The temporary locking claw and the main locking claw are integrally formed continuously in a direction crossing the insertion direction of the retainer. Connector described in. The lock piece is divided and formed in a direction intersecting with the insertion direction of the lock piece,
The said temporary latching claw is formed in one side of the divided | segmented lock piece, The said regular latching claw is formed in the other of the divided | segmented lock piece, The 1 thru | or characterized by the above-mentioned. The connector according to claim 3.

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