JP6268072B2 - Connector housing - Google Patents

Description

  The present invention relates to a connector housing provided with a lock arm and a pair of lock arm protection walls (hereinafter also simply referred to as protection walls) opposed to both side surfaces of the lock arm on one outer side surface of the housing body.

FIG. 12 shows a connector housing disclosed in Patent Document 1 below.
The connector housing 100 is an integrally molded product made of resin, and includes a connector housing main body 110, a lock arm 120, and a protective wall 130 that protects the lock arm 120.

  The connector housing body 110 is a part that is fitted and connected to a mating connector housing body (not shown) that is a connection partner. The connector housing main body 110 has a plurality of terminal accommodating holes 111 for accommodating and holding terminal fittings.

  When the connector arm main body 110 is fitted and connected to the mating connector housing body of the mating connector, the lock arm 120 engages with the lock portion provided in the mating connector housing body of the mating connector, thereby This is the part that locks the connection state. The lock arm 120 is provided in the center of the outer side surface 112 of the connector housing main body 110 in the width direction (arrow X1 direction in FIG. 12). The lock arm 120 is provided so as to extend like a cantilever along the fitting direction between the housing bodies (in FIG. 12, a direction perpendicular to the paper surface). The lock arm 120 is bent and deformed in the direction in which the free end side approaches the one outer surface 112 (in the direction of arrow Y1 in FIG. 12) during the fitting between the housing bodies, and when the fitting between the housing bodies is completed, The parts (free ends) that have been bent and deformed in the middle of the mating are restored to their original positions by the elastic restoring force and engaged with the lock part provided in the mating connector housing body, so that the housing bodies can be connected to each other. Lock state. The locked state is released by pressing the unlocking operation unit 122 provided at the free end of the lock arm 120.

  The protective wall 130 is provided on one outer surface 112 of the connector housing body 110 so as to face both side surfaces of the lock arm 120. The pair of protective walls 130 restrict the lock arm 120 from being bent in the disengagement direction (the direction of the arrow Y1 in FIG. 12) due to interference with an external member.

  In the case of the connector housing 100 of Patent Document 1, turn-up preventing protrusions 123 are provided on both side surfaces 121 of the lock arm 120 facing the protective wall 130. The turn-up preventing protrusion 123 is a protrusion protruding from the side surface 121 of the lock arm 120 toward the protective wall 130.

  Further, the protective wall 130 is provided with a turn-up preventing projection 133. The turning prevention protrusion 133 is a protrusion provided so as to protrude from the turning prevention protrusion 123. In this protective wall 130, the cable or finger is caught by the free end of the lock arm 120, and the unlocking operation unit 122 is further away from the outer side surface 112 from the reference position (the locked state shown in FIG. 12) (see FIG. 12, in the direction opposite to the direction indicated by the arrow Y 1), abuts against the turning-preventing protrusion 123 and restricts displacement (turning up) away from the one outer surface 112 of the unlocking operation portion 122.

JP 2004-39555 A

  However, in the connector housing 100 in Patent Document 1, the overlapping dimension W1 (see FIG. 12) between the turning prevention protrusion 123 and the turning prevention protrusion 133 is the separation dimension S1 between the lock arm 120 and the protective wall 130 (see FIG. 12). 12).

  Therefore, the external force acting on the lock arm 120 has a component that causes the lock arm 120 to bend in the width direction of the connector housing main body 110 and a component that causes the lock arm 120 to bend in a direction away from the one outer surface 112. When the lock arm 120 bends in the width direction larger than the overlapping dimension W1 of the turn-up preventing projection 123 and the turn-up prevention projection 133 by this external force and bends in the direction away from the outer side surface 112, the lock arm 120 There is a problem in that the flip-up preventing projection 123 on one side cannot come into contact with the turn-up preventing projection 133 and the unlocking operation portion 122 is turned up.

  Therefore, an object of the present invention is to solve the above problem, even when a force toward the width direction of the housing body and a force toward the direction away from one outer surface of the housing body act on the lock arm, An object of the present invention is to provide a connector housing capable of preventing the unlocking operation portion from being turned up in a direction away from one outer side surface of the housing body by these forces.

The above-described object of the present invention is achieved by the following configuration.
(1) a connector housing body that is fitted and connected to a mating connector housing body that is a connection partner;
The connector housing body is provided so as to extend from one outer surface of the connector housing body along the fitting direction of the housing bodies, and is bent and deformed in the unlocking direction perpendicular to the one outer surface during the fitting of the housing bodies. When the mating between the main bodies is completed, the part that has been bent and deformed in the middle of the mating is returned to the original position by the elastic restoring force, and is engaged with the lock part equipped in the mating connector housing main body, A lock arm that locks the connection between the housing bodies;
The lock release is provided at the end of the lock arm opposite to the lock engaging portion, and the lock arm swings and is displaced in the unlocking direction when pressed in a direction approaching the one outer surface. An operation unit;
A pair of protective walls that are erected on the one outer surface so as to face both side surfaces of the lock arm and restrict the lock arm from bending in the unlocking direction due to interference with an external member;
A connector housing comprising:
A protruding portion for preventing turning that protrudes from the side surface of the lock arm facing the protective wall toward the protective wall from the side near the unlocking operation portion;
Protruding from the protective wall over the anti-flipping projection, the lock release operating portion is displaced further away from the one outer surface from a reference position by contact with the anti-flipping projection. A first turn-up preventing projection for restricting
The lock release operation portion is provided so as to protrude from the upper end of the protective wall onto the lock arm, and the lock release operation portion is displaced further away from the one outer surface from a reference position by contact with the lock release operation portion. A second curl prevention protrusion for regulating
With
A connector housing, wherein the contact of the first turning prevention protrusion with the turning prevention protrusion and the contact of the second turning prevention protrusion with the unlocking operation portion are simultaneous.

  (2) Protrusion of the second anti-turn projection so that an overlapping dimension of the unlocking operation portion and the second anti-turn projection is larger than a gap between the lock arm and the protective wall. The connector housing according to (1), wherein a length is set.

  (3) A dimension that is provided on at least one of the protective wall or the lock arm, and that the gap between the protective wall and the lock arm overlaps the turn-up preventing protrusion and the first turn-up preventing protrusion. The connector housing according to (1) or (2) above, further comprising a bulging portion that is smaller than the bulging portion.

  According to the configuration of (1) above, when an external force that moves in a direction away from the one outer surface of the connector housing body acts on the lock arm, the lock arm is displaced in a direction away from the one outer surface. The side-turning protrusions on the side surfaces of the protrusions come into contact with the first turning-preventing protrusions protruding from the protective wall, and displacement in the direction away from the one outer surface of the unlocking operation part is restricted.

  In addition, when the protrusion for preventing the turning of the side surface of the lock arm comes into contact with the first turning prevention protrusion provided on the protective wall, the unlocking operation portion of the lock arm is provided at the upper end of the protective wall at the same time. Abutting on the second turn-up preventing protrusion, the displacement of the unlocking operation portion from the reference position further in the direction away from the one outer surface is restricted.

  In other words, the flip-up of the unlocking operation portion is doubly regulated by the first turning prevention projection and the second turning prevention projection provided on the protective wall. , Can be more reliably prevented.

According to the configuration of (2) above, when the external force acting on the lock arm includes a component in the width direction of the connector housing body, the width direction component causes the lock arm to bend in the width direction. A situation in which the lock arm can pass through the first turn-up preventing protrusion provided on the protective wall due to the bending of the lock arm in the width direction can occur. However, the length of the second anti-turn projection provided on the protective wall in the width direction of the connector housing body is set to be larger than the gap between the lock arm and the protective wall. Even if the preventing protrusion is able to slip through the first anti-turning protrusion, the second anti-turning protrusion remains in contact with the unlocking operation portion of the lock arm, and the unlocking operation is performed. Prevents parts from turning up.
Therefore, it is possible to reliably prevent the unlocking operation unit from turning up.

  According to the configuration of (3) above, the amount of bending of the lock arm in the width direction is prevented by the bulging portion provided on at least one of the protective wall or the lock arm, and the bulge prevention protrusion and the first fold prevention. It is limited to a range smaller than the dimension overlapping with the protrusion.

  Therefore, even when the lock arm is bent in the width direction and is displaced in a direction away from the outer side surface, the first turn-up prevention protrusion is provided on the protective wall. It is possible to reliably contact the protrusion and prevent the lock release operation portion from being turned up by the anti-turn protrusion.

  According to the connector housing according to the present invention, even when the force in the width direction of the connector housing body and the force in the direction away from the one outer surface of the connector housing body act on the lock arm, these forces release the lock. It is possible to prevent the operating portion from turning up in a direction away from the one outer surface of the connector housing body.

It is the perspective view seen from back diagonally upward of 1st Embodiment of the connector housing which concerns on this invention. It is the perspective view which looked at the connector housing of 1st Embodiment of this invention from the angle different from FIG. It is a front view of the connector housing of a 1st embodiment of the present invention. It is a rear view of the connector housing of 1st Embodiment of this invention. It is AA partial sectional drawing of FIG. FIG. 4 is a partial cross-sectional view taken along line BB in FIG. 3. It is a longitudinal cross-sectional view of the state which the other party connector housing fitted to the connector housing of 1st Embodiment of this invention. FIG. 3 is an enlarged view of the main part of the connector housing of FIG. 2 as viewed from the rear side. It is operation | movement explanatory drawing of the connector housing of 1st Embodiment of this invention. It is a front view of the connector housing of 2nd Embodiment of this invention. It is a rear view of the connector housing of 2nd Embodiment of this invention. It is a front view of the conventional connector housing.

  Hereinafter, a preferred embodiment of a connector housing according to the present invention will be described in detail with reference to the drawings.

[First Embodiment]
1 to 9 show a first embodiment of a connector housing according to the present invention. FIG. 1 is a perspective view of the first embodiment of the connector housing according to the present invention as viewed obliquely from above and FIG. The perspective view which looked at the connector housing of 1st Embodiment of this invention from the angle different from FIG. 1, FIG. 3 is the front view of the connector housing of 1st Embodiment of this invention, FIG. 4 is 1st Embodiment of this invention. FIG. 5 is a partial sectional view taken along the line AA in FIG. 3, FIG. 6 is a partial sectional view taken along the line BB in FIG. 3, and FIG. 7 is a first embodiment of the present invention. FIG. 8 is an enlarged view of the main part of the connector housing of FIG. 2 as viewed from the rear side, and FIG. 9 is a connector housing according to the first embodiment of the present invention. FIG.

  The connector housing 2 according to the first embodiment is an integrally molded product of resin. As shown in FIGS. 1 to 7, the connector housing main body 3, the lock arm 4, the lock release operation portion 44, and the turn-up preventing protrusion. A portion 45, a pair of lock arm protection walls (hereinafter also simply referred to as protection walls) 6, a first turning prevention protrusion 63, and a second turning prevention protrusion 65 are provided.

  As shown in FIG. 1, the connector housing body 3 has a plurality of electric wire insertion holes 31 through which electric wires connected to terminal fittings are inserted. As shown in FIG. 7, the connector housing body 3 is fitted and connected to a mating connector housing body 7 which is a mating connector, so that the terminal fittings accommodated are connected to the terminal fittings in the mating connector housing main body 7. The

  The lock arm 4 is provided at the center in the width direction of the housing upper surface 32 that is one outer side surface of the connector housing body 3. The lock arm 4 is connected to a pair of arm main bodies 41 extending along the fitting direction of the housing main bodies (in the direction of arrow X2 in FIG. 5), and the arm main body 41 is swingably connected to the connector housing main body 3. Housing connecting portion 42 (see FIG. 5), a connecting arm 41a for connecting the arm main body 41 and the housing connecting portion 42, a lock engaging portion 43 provided at the front end of the arm main body 41, and the arm main body 41. The unlocking operation part 44 provided in the rear end part and the protrusion 45 (refer FIGS. 2-4) which are provided protruding from the outer surface of each arm main body 41 are provided.

  As shown in FIG. 5, the housing connecting portion 42 is connected to the connector housing main body 3 at a position slightly close to the unlocking operation portion 44 side in the middle portion of the pair of arm main bodies 41 in the longitudinal direction. By the support by the housing connecting portion 42, the pair of arm main bodies 41 are supported so as to be swingable via the connecting arm 41a with the housing connecting portion 42 as a fulcrum, and as shown in FIG. When the lock release operation portion 44 at the rear end is pressed in the direction of arrow Y3, the lock portion engaging portion 43 at the tip of the arm body 41 swings in the direction of arrow Y4.

  The locking portion engaging portion 43 rides on the locking portion 73 (see FIG. 7) provided in the mating connector housing main body 7 in the middle of fitting between the housing main bodies, and accordingly, the front end side of the arm main body 41 is It bends and deforms in a direction away from the upper surface 32 of the housing. That is, in the middle of fitting between the housing bodies, the lock portion engaging portion 43 is displaced in a direction away from the housing upper surface 32 that is one outer side surface of the connector housing body 3. When the fitting between the housing main bodies is completed, the portion of the arm main body 41 that has been bent and deformed during the fitting is restored to the original position by the elastic restoring force. As shown in FIG. 7, the lock portion engaging portion 43 engages with the lock portion 73 provided in the mating connector housing main body 7, thereby locking the connection state between the housing main bodies.

  The lock release operation part 44 is a part to be pressed when releasing the lock of the connection state between the housing bodies. The unlocking operation part 44 is provided so as to connect the rear end parts of the arm main body 41 which is the end part opposite to the lock part engaging part 43. That is, the unlocking operation portion 44 is provided at the end of the lock arm 4 opposite to the lock portion engaging portion 43, and as shown by an arrow Y5 in FIG. By pressing in the direction approaching the side surface 32, the lock arm 4 swings and the lock portion engaging portion 43 is displaced in the unlocking direction (the direction of arrow Y6 in FIG. 7).

  As shown in FIGS. 2 to 4, the turning prevention protrusion 45 is a protrusion protruding from the side surface of the lock arm 4 facing the protection wall 6 (the outer surface of the arm body 41) toward the protection wall 6. is there. The turn-up preventing projection 45 is provided on the outer surface of each arm body 41 at a position near the unlocking operation portion 44.

  When the unlocking operation portion 44 is further displaced from the reference position (locked position) in a direction away from the outer side surface, the turning prevention protrusion 45 is formed on a first turning prevention protrusion 63 of the protective wall 6 described later. By abutting, the displacement of the unlocking operation unit 44 is regulated.

  The pair of protective walls 6 are erected on a housing upper surface 32 that is one outer surface of the connector housing body 3 so as to face both outer surfaces of the lock arm 4. The pair of protective walls 6 have a height dimension equal to or higher than the height of the upper surface of the lock arm 4, and restrict the lock arm 4 from being bent in the unlocking direction due to interference with an external member.

  As shown in FIG. 8, the pair of protective walls 6 according to the present embodiment is provided with a first turning prevention protrusion 63 and a second turning prevention protrusion 65.

  The first turning prevention protrusion 63 is provided so as to protrude from the protective wall 6 onto the turning prevention protrusion 45 on the lock arm 4. When the lock arm 4 is displaced in a direction away from the housing upper surface 32, the first curl prevention projection 63 is brought into contact with the curling prevention projection 45 so that the lock release operation portion 44 is further moved from the reference position to the upper surface of the housing ( Displacement in a direction away from one outer surface 32 is regulated.

  The second turn-up preventing projection 65 is provided so as to protrude from the upper end of the protective wall 6 onto the unlocking operation part 44 of the lock arm 4, and is brought into contact with the unlocking operation part 44, whereby the unlocking operation part 44 44 is restricted from being displaced from the reference position in a direction away from the housing upper surface 32 which is one outer side surface.

  In the case of this embodiment, as shown in FIG. 9, when the flip-up preventing projection 45 comes into contact with the first turn-up preventing projection 63 due to the displacement of the unlocking operation portion 44, The equipment positions of the first turning prevention protrusion 63 and the second turning prevention protrusion 65 are set so that the end portion comes into contact with the second turning prevention protrusion 65.

  Furthermore, in the case of the present embodiment, as shown in FIG. 8, the overlapping dimension m1 of the unlocking operation portion 44 and the second turn-up preventing projection 65 is larger than the gap S1 between the lock arm 4 and the protective wall 6. The protruding length of the second turning prevention protrusion 65 on the unlocking operation portion 44 is set so as to increase.

  According to the configuration of the connector housing 2 of the present embodiment described above, an external force that moves in a direction away from one outer side surface (housing upper surface 32) of the connector housing body 3 acts on the lock arm 4, and the lock arm 4 is When displaced in a direction away from the housing upper surface 32, the turn-up preventing projection 45 on the side surface of the lock arm 4 comes into contact with the first turn-up preventing projection 63 projecting from the protective wall 6, and the unlocking operation portion. The displacement in the direction away from one outer surface of 44 is restricted.

  Further, when the turn-up preventing projection 45 on the side surface of the lock arm 4 comes into contact with the first turn-up preventing projection 63 provided on the protective wall 6, the lock release operation portion 44 of the lock arm 4 is simultaneously moved to the protective wall. 6 is abutted against the second anti-turning protrusion 65 provided at the upper end of 6, and the unlocking operation portion 44 is restricted from being further displaced from the reference position in a direction away from one outer surface (housing upper surface 32).

  That is, the turning up of the lock arm 4 is doubly regulated by the first turning prevention protrusion 63 and the second turning prevention protrusion 65 provided on the protective wall 6. The turning up can be prevented more reliably.

Further, according to the configuration of the connector housing 2 of the present embodiment, when the external force acting on the lock arm 4 includes a component in the width direction of the connector housing body 3, the lock arm is determined by the width direction component. 4 may be bent in the width direction, and the lock arm 4 may be bent in the width direction so that the lock arm 4 can pass through the first turn-up preventing protrusion 63 provided on the protective wall 6. However, the protruding length of the second turning prevention protrusion 65 provided in the protective wall 6 in the width direction of the connector housing body 3 is set to be larger than the gap between the lock arm 4 and the protective wall 6. Even if the turn-up preventing projection 45 of the lock arm 4 can pass through the first turn-up preventing projection 63, the second turn-up preventing projection 65 abuts on the unlocking operation portion 44 of the lock arm 4. Thus, the unlocking operation unit 44 is prevented from turning up.
Therefore, it is possible to reliably prevent the unlocking operation unit 44 from being turned up.

[Second Embodiment]
FIG. 10 is a front view of the connector housing of the second embodiment of the present invention, and FIG. 11 is a rear view of the connector housing of the second embodiment of the present invention.

  The connector housing 2A of the second embodiment is an improvement of a part of the connector housing 2 shown in the first embodiment. The configuration other than the improvements is the same as that of the first embodiment, and the common configuration is the first. The same reference numerals as those in the first embodiment are given and the description thereof is omitted.

  The second embodiment is different from the first embodiment in that a gap between the protective wall 6 and the lock arm 4 is formed on the side of the lock arm 4, and a turn prevention protrusion 45 and a first turn prevention protrusion 63. It is the point provided with the bulging part 46 made smaller than the dimension which overlaps with.

  The bulging portion 46 is obtained by bulging the outer surface of the lock arm 4 (the outer surface of the arm main body 41) facing the protective wall 6 into a convex chevron structure on the protective wall 6 side. The bulging portion 46 has a bulging structure in which the gap between the protective wall 6 and the lock arm 4 is made smaller than the overlapping dimension of the turning prevention protrusion 45 and the first turning prevention protrusion 63. By forming the bulging portion 46, a gap between the protective wall 6 and the bulging portion 46, which is a gap between the protective wall 6 and the lock arm 4, will be described later with the protrusion 45 for turning over. The size is smaller than the overlapping dimension with the anti-flipping protrusion 63.

The bulging portion 46 is preferably provided near the unlocking operation portion 44 of the lock arm 4.
Instead of providing the bulging portion 46 on the lock arm 4, a bulging portion may be provided on the protective wall 6.

  In the connector housing 2A of the second embodiment, the bulging portion 46 is provided when an external force along the width direction of the connector housing body 3 acts on the lock arm 4 and the lock arm 4 is bent and deformed in the width direction. Thus, the amount of displacement in the width direction of the lock arm 4 is limited to a value smaller than the overlapping dimension of the turning prevention protrusion 45 and the first turning prevention protrusion 63.

  Therefore, in the connector housing 2A of the second embodiment, even when the lock arm 4 is bent in the width direction and displaced in a direction away from the housing upper surface 32, the flip-up preventing protrusion 45 on the side surface of the lock arm 4 is provided. The first turn-up preventing projection 63 that protrudes from the protective wall 6 can be reliably brought into contact, and the first turn-up preventing projection 63 can reliably prevent the unlocking operation portion 44 from being turned up.

  Similarly to the first embodiment, when the flip-up preventing projection 45 comes into contact with the first turn-up preventing projection 63 due to the displacement of the unlocking operation portion 44, the side end portion of the unlocking operation portion 44 is simultaneously moved. Since the second curl prevention protrusion 65 abuts, it is possible to more reliably prevent the lock release operation part 44 from curling up.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

  Here, the features of the above-described embodiment of the connector housing according to the present invention will be summarized and listed in the following [1] to [3], respectively.

[1] A connector housing body (3) to be fitted and connected to a mating connector housing body (7) as a connection partner;
The connector housing body (3) is provided so as to extend from one outer surface (32) of the connector housing body (3) along the fitting direction between the housing bodies, and is orthogonal to the one outer surface (32) in the middle of the fitting between the housing bodies. When it is bent and deformed in the unlocking direction and the housing bodies are mated together, the part that was bent and deformed in the middle of the mating is restored to its original position by elastic restoring force and is installed in the mating connector housing body (7) A lock arm (4) that locks the connection state between the housing main bodies by engaging with the lock portion (73) that is provided;
The lock arm (4) is provided at an end of the lock arm (4) opposite to the lock portion engaging portion (43), and is pressed in a direction approaching the one outer surface (32) so that the lock arm (4) is An unlocking operation portion (44) that swings and displaces in the unlocking direction;
The lock arm (4) is erected on the one outer side surface (32) so as to face both side surfaces of the lock arm (4), and restricts the lock arm (4) from bending in the unlocking direction due to interference with an external member. A pair of protective walls (6);
A connector housing (2) comprising:
The locking arm (4) facing the protective wall (6) protrudes toward the protective wall (6) from the side of the lock arm (4) close to the unlocking operation part (44), and the protrusion (45) for preventing turning back is provided. When,
The lock release operation portion (44) is provided as a reference by protruding from the protective wall (6) onto the turn-up preventing projection (45) and coming into contact with the turn-up preventing projection (45). A first turn-up preventing protrusion (63) for restricting displacement from the position in a direction away from the one outer surface (32);
The lock release operation part (44) is extended from the upper end of the protective wall (6) onto the lock arm (4), and comes into contact with the lock release operation part (44) so that the lock release operation part (44) is moved from the reference position. A second turn-up preventing projection (65) for restricting displacement in a direction away from the one outer surface (32);
With
The contact of the first turning prevention protrusion (63) with the turning prevention protrusion (45) and the contact of the second turning prevention protrusion (65) with the unlocking operation portion (44). Connector housing (2) characterized in that it is simultaneous.

  [2] The overlapping dimension of the unlocking operation part (44) and the second turn-up preventing projection (65) is larger than the gap between the lock arm (4) and the protective wall (6). As described above, the connector housing (2) according to the above [1], wherein the protrusion length of the second turn-up preventing protrusion (65) is set.

  [3] At least one of the protective wall (6) or the lock arm (4) is provided, and a gap between the protective wall (6) and the lock arm (4) is formed in the protrusion for preventing turning. The connector housing according to [1] or [2] above, further comprising a bulging portion (46) that is smaller than the overlapping dimension of (45) and the first curl prevention projection (63). 2).

2, 2A connector housing 3 connector housing body 4 lock arm 6 protective wall 7 mating connector housing body 32 housing upper surface (one outer surface)
43 Locking portion engaging portion 44 Unlocking operation portion 45 Turning-up preventing projection 46 Swelling portion 63 First turning-up preventing projection 65 Second turning-up preventing projection 73 Locking portion

Claims (3)

A connector housing body that fits and connects to a mating connector housing body to be connected;
The connector housing body is provided so as to extend from one outer surface of the connector housing body along the fitting direction of the housing bodies, and is bent and deformed in the unlocking direction perpendicular to the one outer surface during the fitting of the housing bodies. When the mating between the main bodies is completed, the part that has been bent and deformed in the middle of the mating is returned to the original position by the elastic restoring force, and is engaged with the lock part equipped in the mating connector housing main body, A lock arm that locks the connection between the housing bodies;
The lock release is provided at the end of the lock arm opposite to the lock engaging portion, and the lock arm swings and is displaced in the unlocking direction when pressed in a direction approaching the one outer surface. An operation unit;
A pair of protective walls that are erected on the one outer surface so as to face both side surfaces of the lock arm and restrict the lock arm from bending in the unlocking direction due to interference with an external member;
A connector housing comprising:
A protruding portion for preventing turning that protrudes from the side surface of the lock arm facing the protective wall toward the protective wall from the side near the unlocking operation portion;
Protruding from the protective wall over the anti-flipping projection, the lock release operating portion is displaced further away from the one outer surface from a reference position by contact with the anti-flipping projection. A first turn-up preventing projection for restricting
The lock release operation portion is provided so as to protrude from the upper end of the protective wall onto the lock arm, and the lock release operation portion is displaced further away from the one outer surface from a reference position by contact with the lock release operation portion. A second curl prevention protrusion for regulating
With
A connector housing, wherein the contact of the first turning prevention protrusion with the turning prevention protrusion and the contact of the second turning prevention protrusion with the unlocking operation portion are simultaneous.   The protruding length of the second anti-turning projection is set so that the overlapping dimension of the unlocking operation portion and the second anti-turning projection is larger than the gap between the lock arm and the protective wall. The connector housing according to claim 1.   The clearance between the protective wall and the lock arm, which is provided on at least one of the protective wall or the lock arm, is smaller than the overlapping dimension of the turn-up preventing projection and the first turn-up preventing projection. The connector housing according to claim 1, further comprising a bulging portion.

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