JP2014186934A - Joint connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress increase of contact resistance at a connection part of a female terminal and a male terminal.SOLUTION: A joint connector comprises: a housing 10 having a cavity into which a crimp terminal is inserted from a back side; a joint terminal attached to the housing 10 from a front side; and a retainer 20 which is attached at an attachment hole 18 provided with a first side wall 12A of the housing 10 so as to prevent the crimp terminal inserted into the cavity from dropping off. The joint connector further comprises a lance provided with the first side wall 12A of the housing 10 so as to prevent the crimp terminal inserted into the cavity from dropping off at a fitted face. The attachment hole 18 is provided between a back end of the housing 10 and the lance. A part of a boundary part BL of the retainer 20 and the first side wall 12A of the housing 10 has a slit S to separate the retainer 20 and the first side wall 12A.

Description

  The present invention relates to a joint connector.

  2. Description of the Related Art Conventionally, as a joint connector for short-circuiting a plurality of terminals, a joint connector is known in which a female terminal inserted in a housing is double-prevented by a lance and a retainer. As an example of such a joint connector, for example, a joint connector described in Patent Document 1 is known. This joint connector includes a housing having a cavity into which a female terminal can be inserted from the rear.

  In the joint connector of Patent Document 1, a lance that prevents the female terminal from coming off by being engaged with the female terminal inserted into the cavity is provided in the cavity. In this joint connector, the retainer is attached to the housing after the female terminal inserted into the cavity is engaged with the lance, so that the rear portion of the female terminal is engaged with the lance by the retainer. Furthermore, it is prevented from coming off.

JP 2012-146523 A

  By the way, in the joint connector disclosed in the above-mentioned Patent Document 1, the housing is fixed to the trunk line of the wire harness arranged in the engine room or the like of the automobile, so that the female terminal engaged with the lance is located behind the housing. May be pulled. Further, in a state where the joint connector is fixed to the trunk line of the wire harness, the joint connector may be affected by heat from the outside due to a transition from a normal temperature environment to a high temperature environment, and the side wall of the housing may be thermally expanded.

  Thus, when the side wall of the housing is thermally expanded with the female terminal pulled toward the rear of the housing, the terminal portion of the female terminal engaged with the lance slides greatly between the female terminal and the male terminal in the housing. As a result, a large amount of abrasion powder is generated in the female terminal and the male terminal in the housing, thereby causing a problem that the contact resistance increases at the contact portion between the male terminal and the male terminal.

  The technology disclosed in this specification has been created in view of the above problems. An object of the technology disclosed in the present specification is to provide a joint connector capable of suppressing an increase in contact resistance at a contact portion between a female terminal and a male terminal.

  The technology disclosed in the present specification is attached to a housing having a cavity into which a female terminal can be inserted from the rear, a male terminal attached to the housing from the front, and a mounting hole provided on one side wall of the housing. And a retainer that prevents the female terminal inserted into the cavity from being removed, and is provided on the one side wall of the housing, and is inserted into the cavity at an engagement surface provided at a part thereof. And a mounting lance provided between the rear end of the housing and the lance, and at least one of the boundary between the retainer and the one side wall of the housing. The present invention relates to a joint connector in which a slit for separating the retainer and the one side wall is provided in a portion.

  In the joint connector, the length that the side wall and the retainer of the housing extend due to thermal expansion is proportional to the size of the side wall and the retainer that receive heat. On the other hand, in a joint connector in which a lance is provided on one side wall of the housing and a retainer is attached to the one side wall, the lance and the rear end of the housing are connected via the retainer on the one side wall. In the joint connector having such a structure, the lance is thermally expanded in a state where the female terminal double-retained by the engaging surface provided on a part of the lance and the retainer is pulled rearward of the housing. The extending length is proportional to the distance between the engagement surface including the retainer and the rear end of the housing.

  In the above-described joint connector, a slit is provided in at least a part of the boundary between the retainer and the one side wall so that the length of the engagement surface of the lance extending due to thermal expansion is such that the engagement surface and the slit Will depend on the distance between. Here, since the distance between the engagement surface of the lance and the slit is shorter than the distance between the engagement surface of the lance and the rear end of the housing, the engagement surface of the lance is thermally expanded in the joint connector. The length extended by this is shorter than that of a conventional joint connector in which no slit is provided. For this reason, in the above-mentioned joint connector, it is possible to suppress thermal expansion on the engagement surface of the lance compared to the conventional joint connector in which no slit is provided, and in the housing during the thermal expansion of the engagement surface of the lance. In the female terminal and the male terminal, the amount of sliding of the terminal portion of the female terminal engaged with the lance can be reduced. As a result, an increase in contact resistance at the contact portion between the female terminal and the male terminal can be suppressed.

The slit may be provided in a portion of the boundary portion that is located between the front side of the retainer and the one side wall of the housing.
According to this configuration, the lance is compared with the case where a slit is provided in a portion located between the rear side or the side of the housing and the one side wall as viewed from the retainer. The distance between the engagement surface and the slit can be made short. Thereby, the thermal expansion in the engaging surface of a lance can be effectively suppressed by providing a slit, and the raise of the contact resistance in the contact part of a female terminal and a male terminal can be suppressed further.

  According to the technique disclosed in this specification, it is possible to provide a joint connector capable of suppressing an increase in contact resistance at a contact portion between a female terminal and a male terminal.

The perspective view which looked at the component and the crimp terminal of the joint connector which concern on embodiment from the 1st side wall side Top view of housing viewed from above Top view of the housing with the retainer attached as seen from above Front view of the housing from the front Rear view of the housing with the joint terminals attached as seen from the rear Top view of retainer viewed from above Top view of retainer viewed from below Side view of retainer viewed from the front AA line sectional view of Drawing 4 showing the state before inserting a crimp terminal in a housing AA line sectional view of Drawing 4 showing the state after inserting a crimp terminal in a housing

  Embodiments will be described with reference to the drawings. The joint connector JC according to the embodiment is wound and fixed on a wire harness (not shown) with a tape (not shown). As shown in FIG. 1, the joint connector JC includes a housing 10 in which a cavity 11 (see FIG. 5) into which a crimp terminal (an example of a female terminal) 30 can be inserted from the rear, and a front of the housing 10. To a joint terminal (an example of a male terminal) 40 attached to the housing 10 and a retainer 20 attached to an attachment hole 18 provided in a first side wall 12A (to be described later) of the housing. The joint terminal 40 short-circuits the crimp terminals 30 inserted into the cavity 11. The retainer 20 prevents the crimp terminal 30 inserted into the cavity 11 from coming off. Hereinafter, in each component, the lower left side of FIG. 1 is described as the front, the upper right side is the rear, the upper side is the upper side, and the lower side is the lower side. 4 to 10 are shown upside down.

  The housing 10 is made of a synthetic resin and has a flat box shape as a whole. Four cavities 11 are elongated in the front-rear direction, and four cavities 11 are arranged in the width direction of the housing 10. Each cavity 11 has a substantially rectangular shape that is slightly larger than a connection portion 31 described later of the crimp terminal 30, and the crimp terminal 30 can be inserted from the rear thereof. Below, among the side walls (walls covering the periphery of the cavity 11) 12 of the housing 10, the side wall located above the cavity 11 is defined as the first side wall (an example of one side wall) 12A, and the side wall disposed below the side wall. The side wall disposed on the second side wall 12B and on both sides (both sides on both ends of the cavity 11 in the parallel cavities 11) is referred to as a third side wall 12C. The joint connector JC is fixed to the main line in a direction in which the first side wall 12A is in contact with the main line of the wire harness.

  As shown in FIGS. 1 and 2, the first side wall 12 </ b> A of the side wall 12 of the housing 10 is provided with a mounting hole 18 for mounting a retainer 20 described later. The opening of the attachment hole 18 has a contour that follows the shape of the outer wall 22 of the retainer 20 and is sized to allow the retainer 20 to be inserted. The retainer 20 can be attached to the attachment hole 18 with almost no gap. ing. Note that, on both the left and right sides of the rear end of the mounting hole 18, mounting hole recesses 18A are provided along the shape of the outer wall 22 of the retainer 20 (see FIG. 2).

  A lance 14 is provided on the inner surface (surface on the cavity 11 side) of the first side wall 12A of the housing 10 in front of the mounting hole 18 as shown in FIGS. Four lances 14 are provided in a line-up in the left-right direction, each extending in a cantilevered manner toward the front. Each lance 14 can be elastically bent in the vertical direction in the cavity 11. Engagement portions 14A that protrude inward (project downward) of the cavity 11 are provided in the middle of each lance 14 (see FIGS. 9 and 10). The front end face of the engaging portion 14A is an engaging face 14B (see FIGS. 9 and 10). Each lance 14 prevents the crimp terminal 30 from coming off from the cavity 11 by engaging the engagement surface 14 </ b> B of the engagement portion 14 </ b> A with the engaged portion 33 provided at the front end of the crimp terminal 30.

  A first rib 15 </ b> A extending in the left-right direction is provided at the rear end of the first side wall 12 </ b> A of the housing 10. A second rib 15B extending in the front-rear direction is provided at one end of the second side wall 12B of the housing 10 in the left-right direction. An opening 17 is provided in front of the lance 14 in the first side wall 12A.

  As shown in FIG. 1, the crimp terminal 30 is formed of a conductive metal plate material, and has an elongated shape in the front-rear direction as a whole. A connection part 31 connected to the joint terminal 40 is provided on the front side of the crimp terminal 30, and a barrel part 32 for caulking the terminal part of the electric wire W is provided on the rear side of the crimp terminal 30. The crimp terminal 30 is connected to a terminal portion of the electric wire W constituting the wire harness.

  The connection portion 31 provided in the crimp terminal 30 has a rectangular tube shape opened in the front-rear direction, and the terminal portion 42 of the joint terminal 40 is inserted from the front to be electrically connected. Further, as described above, an engaged portion 33 that can be engaged with the engaging surface 14B of the lance 14 protrudes from the connecting portion 31 at a position near the front end thereof.

  The joint terminal 40 is manufactured by pressing a conductive metal member. As shown in FIG. 1, a plurality of (four in the embodiment) are provided at predetermined intervals from the strip-shaped base 41. The terminal portion 42 has a protruding shape.

  The joint terminal 40 is attached to the front end of the housing 10 from the front with the terminal portion 42 as a tip (in a direction in which the terminal portion 42 protrudes rearward). In a state where the joint terminal 40 is mounted on the housing 10, each terminal portion 42 is in a state of protruding into each cavity 11 (see FIGS. 9 and 10).

  As shown in FIG. 4, a mounting portion 16 to which the band-like base portion 41 of the joint terminal 40 is mounted is provided at the front end portion of the housing 10. The mounting portion 16 is a space provided in front of the cavity 11 and opens in front of the housing 10. The mounting portion 16 has a height dimension equivalent to the plate thickness dimension of the joint terminal 40. In addition, the mounting portion 16 has a rectangular shape that conforms to the outer shape of the belt-like base portion 41 in plan view. The front end (opening edge) of the mounting portion 16 is a tapered portion 16A having a shape in which the mounting portion 16 widens toward the front.

  As shown in FIG. 4, an elastic wall 19 is provided above the mounting portion 16. The elastic wall 19 has a wall shape along the mounting direction of the joint terminal 40, and has a substantially rectangular shape that is long in the width direction of the housing 10 when viewed from above and below. Both end edges (left and right end edges) of the elastic wall 19 in the longitudinal direction are connected to the third side wall 12C of the housing 10, and the rear end edge of the elastic wall 19 is provided to be connected to a partition wall 13 described later.

  As shown in FIG. 5, openings of the cavities 11 are provided at the rear end of the housing 10, and the connection portions 31 of the crimp terminals 30 are inserted into these openings. In addition, a partition wall 13 that partitions adjacent cavities 11 is provided inside the housing 10 (inside the side wall 12). The partition wall 13 is provided so as to extend in the front-rear direction inside the housing 10.

  As shown in FIGS. 6 to 8, the retainer 20 has an upper wall portion 22A that forms the upper outer wall 22 and side wall portions that extend downward from the left and right ends of the upper wall portion 22A and form the outer walls 22 on the left and right sides of the retainer 20. 22B. The rear end portions of both side wall portions 22B and 22B are retainer side convex portions 23 that protrude rearward along the shape of the mounting hole concave portion 18A in the mounting hole of the housing.

  As shown in FIG. 6, two jig insertion recesses 27 recessed inward are provided at the rear end portion of the upper wall portion 22 </ b> A of the retainer 20. A concave slit S formed by cutting out a part of the upper wall portion 22A is provided at the front end portion of the upper wall portion 22A. In addition, a plurality of retainer side positioning ribs 24 extending in the front-rear direction protrude from the inner side of the upper wall portion 22A. The front end surface of the retainer side positioning rib 24 is a retaining portion 25 described later.

  When the retainer 20 is mounted in the mounting hole 18 of the housing 10, the retainer 20 is positioned in the mounting hole 18 while positioning the retainer side convex portion 23 along the mounting hole concave portion 18 </ b> A with the upper wall portion 22 </ b> A of the retainer 20 facing upward. Insert straight. When the retainer 20 is inserted into the mounting hole 18, the front end portions (lower end portions) 26 of the side wall portions 22 B and 22 B of the retainer 20 interfere with the inner wall of the cavity 11, and the retainer 20 further enters the mounting hole 18. Insertion is restricted, whereby the retainer 20 is attached to the attachment hole 18.

  In a state where the retainer 20 is attached to the attachment hole 18, the upper wall portion 22A of the retainer 20 does not protrude outward from the first side wall 12A of the housing 10, and the outer surface of the upper wall portion 22A and the outer surface of the first side wall 12A. Constitute a flat surface (see FIGS. 3 and 10). In this state, the retainer side positioning rib 24 of the retainer 20 and the partition wall 13 of the housing 10 face each other in the cavity 11. Further, since the retainer 20 is attached to the attachment hole 18 with almost no gap, the retainer 20 is difficult to drop out of the attachment hole 18. When the retainer 20 is removed from the mounting hole 18, the retainer 20 can be removed by hooking a tool or the like on the jig insertion recess 27 formed on the upper wall portion 22A of the retainer 20 and pulling it toward the front side.

  Here, the slit S provided on the front surface of the retainer 20 is formed from the upper surface of the retainer 20 to the retaining portion 25 and extends in the left-right direction. The slit S is formed by slightly cutting a part of the retainer 20 from the front to the rear. For this reason, in a state where the retainer 20 is attached to the attachment hole 18, a slit is formed between the retainer 20 and the first side wall 12 </ b> A of the housing 10 at a part of the boundary portion BL between the retainer 20 and the first side wall 12 </ b> A of the housing 10. Separated by S. In this specification, the boundary BL between the retainer 20 and the first side wall 12A of the housing 10 refers to a contact portion between the retainer 20 and the opening of the mounting hole 18 provided in the first side wall 12A of the housing 10. Shall.

  When the retainer 20 is attached to the attachment hole 18, when the outer surface of the upper wall portion 22A of the retainer 20 and the outer surface of the first side wall 12A of the housing are viewed as one flat surface, as shown in FIG. An opening is formed by a slit S on the flat surface. As shown in FIG. 3, the opening has a shape extending elongated along a direction perpendicular to the direction (front-rear direction) in which the crimp terminal 30 is inserted into the housing 10, that is, the left-right direction.

  As shown in FIG. 3, in a state where the retainer 20 is attached to the attachment hole 18, the slit S is located on the front side of the retainer 20 in the boundary portion BL between the retainer 20 and the first side wall 12 </ b> A of the housing 10. It has a shape provided at a portion located between the first side wall 12A. In the state where the retainer 20 is attached to the attachment hole 18, in the present embodiment, specifically, as shown in FIG. 10, the length between the rear end of the housing 10 and the engagement surface 14 </ b> B of the lance 14. The length L1 is 16 mm, and the length L2 between the slit S and the engagement surface 14B of the lance 14 is 5 mm.

  Subsequently, an aspect when the crimp terminal 30 is inserted into the housing 10 to which the joint terminal 40 is mounted will be described. First, the retainer 20 is temporarily engaged with the housing 10 (see FIG. 5) to which the joint terminal 40 is mounted. In the temporary engagement of the retainer 20, as shown in FIG. 9, the retainer 20 is inserted into the mounting hole 18 until the retaining portion 25 (see FIG. 8) of the retainer 20 does not protrude into the cavity 11. In this temporarily engaged state, the retainer 20 does not interfere with the crimp terminal 30 inserted into the cavity 11, so that the crimp terminal 30 can be inserted into the cavity 11.

  Next, the crimp terminal 30 is inserted into the cavity 11 from the rear end of the housing 10 with respect to the housing 10 to which the retainer 20 is temporarily engaged. Then, the engaging portion 14A of the lance 14 rides on the engaged portion 33 of the crimp terminal 30, and the lance 14 is elastically bent outward. Further, when the engaged portion 33 of the crimp terminal 30 is positioned in front of the lance 14 by further inserting the crimp terminal 30 into the cavity 11, the engaging portion 14 </ b> A of the lance 14 is engaged with the engaged portion of the crimp terminal 30. The lance 14 which has been bent away from 33 returns to its natural state after being elastically restored. As a result, as shown in FIG. 10, the engagement surface 14 </ b> B of the lance 14 faces the rear end surface 33 </ b> A of the locked portion 33 of the crimp terminal 30, and the crimp terminal 30 is engaged with the engagement surface 14 </ b> B of the lance 14. Combined.

  Next, as shown in FIG. 10, the retainer 20 is inserted into the mounting hole 18 so that the upper wall portion 22A of the retainer 20 is flush with the first side wall 12A of the housing 10, and the retainer 20 is fully engaged. To do. Thereby, the retaining portion 25 of the retainer 20 is in a state of facing the rear end surface 31 </ b> A of the connection portion 31 in the mating terminal 30. For this reason, even when the crimp terminal 30 is pulled rearward in the state shown in FIG. 10 and the engaged portion 33 of the crimp terminal 30 is disengaged from the engagement surface 14B of the lance 14, the rear end surface 31A of the terminal portion 31 is maintained. The crimp terminal 30 is prevented from coming off because it interferes with the retaining part 25. That is, the joint connector JC of the present embodiment is configured such that the crimp terminal 30 inserted into the cavity 11 can be prevented from coming off by the lance 14 and the retainer 20.

  In the joint connector, the length that the side wall 12 and the retainer 20 of the housing 10 extend by thermal expansion is proportional to the size of the side wall 12 and the retainer 20 that are affected by heat. Here, in the joint connector in which the lance 14 is provided on the first side wall 12A of the housing 10 and the retainer 20 is attached to the first side wall 12A, the lance 14 and the rear end of the housing 10 are connected to the retainer 20 on the first side wall 12A. It will be in the state connected through. Therefore, in the joint connector in which the crimp terminal 30 is configured to be double-prevented by the engaging surface 14B provided on the engaging portion 14A of the lance 14 and the retaining portion 25 of the retainer 20, the engagement of the lance 14 is determined. The length that the mating surface 14B extends due to thermal expansion is proportional to the distance between the engaging surface 14B including the retainer 20 and the rear end of the housing 10.

  Here, as for the joint connector JC of this embodiment made into the state shown in FIG. 10, the crimp terminal 30 may be pulled back by the housing 10 being fixed on the trunk line of a wire harness. When the crimp terminal 30 is pulled rearward, the engagement surface 14B of the lance 14 is caught on the rear end surface 33A of the engaged portion 33 of the crimp terminal 30, and the crimp terminal 30 is restricted from moving further rearward. In such a regulated state, in the conventional joint connector in which the portion between the lance on the side wall of the housing and the rear end of the housing is connected via the retainer, when affected by heat from the outside, Since the part and the retainer extend over the entire area due to thermal expansion, the terminal portion of the crimp terminal engaged with the lance slides greatly between the crimp terminal and the joint terminal in the housing.

  On the other hand, in the joint connector JC of the present embodiment, when the slit S is provided, when affected by heat from the outside, both portions sandwiching the slit S in the first side wall 12A are expanded by thermal expansion. Will be. That is, when receiving heat from the outside, a portion of the first side wall 12A of the housing 10 on the rear side of the slit S, that is, a portion of the retainer 20 and the first side wall 12A located on the rear side of the retainer 20 expands due to thermal expansion. At the same time, a portion on the front side of the slit S, that is, a portion of the first side wall 12A located on the front side of the retainer 20 extends due to thermal expansion.

  For this reason, the sliding distance of the engaged portion 33 of the crimp terminal 30 engaged with the lance 14 with the thermal expansion of the housing 10 and the retainer 20 is between the engagement surface 14B of the lance 14 and the slit S. Depends on the distance L2 (see FIG. 10). Therefore, in the joint connector JC of the present embodiment, the distance that the engaged portion 33 slides with the thermal expansion of the housing 10 and the retainer 20 is the engagement surface of the lance 14 on the first side wall 12A of the housing 10. Compared with a conventional joint connector in which the space between 14B and the rear end of the housing 10 is connected via the retainer 20, the amount is greatly reduced.

  As described above, in the joint connector JC according to the embodiment, the retainer 20 attached between the engagement surface 14B of the lance 14 and the rear end of the housing 10 is provided with the slit S, so that the engagement surface of the lance 14 is provided. The length by which 14B extends by thermal expansion depends on the distance between the engagement surface 14B of the lance 14 and the slit S. Here, since the distance between the engagement surface 14B of the lance 14 and the slit S of the retainer 20 is shorter than the distance between the engagement surface 14B of the lance 14 and the rear end of the housing 10, In the joint connector JC, the length that the engagement surface 14B of the lance 14 extends by thermal expansion is shorter than that of the conventional joint connector in which the slit S is not provided.

  For this reason, in the joint connector JC of this embodiment, compared with the conventional joint connector in which the slit S is not provided, the thermal expansion in the engagement surface 14B of the lance 14 can be suppressed, and the housing 10 and the retainer 20 can be suppressed. During thermal expansion, the amount of sliding of the engaged portion 33 of the crimp terminal 30 engaged with the lance 14 can be reduced in the crimp terminal 30 and the joint terminal 40 in the housing 10. As a result, an increase in contact resistance at the contact portion between the crimp terminal 30 and the joint terminal 40 can be suppressed.

  Further, in the joint connector JC of the present embodiment, the slit S is provided in a portion of the boundary portion BL located between the front side of the retainer 20 and the first side wall 12A of the housing 10. With such a configuration, the slit S is formed in a portion of the boundary portion BL located between the rear side or the side of the housing 10 and the first side wall 12A when viewed from the retainer 20. Compared with the case where it is provided, the distance between the engaging surface 14B of the lance 14 and the slit S can be shortened. Thereby, the thermal expansion in the engagement surface 14B of the lance 14 can be effectively suppressed by the lack of the first side wall 12A by providing the slit S, and the contact resistance at the contact portion between the crimp terminal 30 and the joint terminal 40 is achieved. Can be further suppressed.

<Other embodiments>
The present invention is not limited to the embodiments described above and with reference to the drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, the configuration in which the slit is provided on the retainer side is illustrated, but the present invention is not limited to this. The structure provided with the slit in the housing side may be sufficient, and the structure provided with the slit in both the retainer side and the housing side may be sufficient.

(2) In the above embodiment, the configuration in which one slit is provided on the retainer side is illustrated, but a configuration in which a plurality of retainers are provided may be employed.

(3) In the above embodiment, the configuration in which the slit opening has a shape extending along a direction orthogonal to the direction in which the crimp terminal is inserted is illustrated, but the shape of the slit opening is not limited.

(4) In the above-described embodiment, the slit is exemplified in the portion provided between the boundary portion and the front side of the retainer and the first side wall of the housing. It may be provided in other parts of the part, and the arrangement of the slits is not limited.

(5) In the above embodiment, the configuration in which the slit is formed by cutting out a part of the retainer is illustrated, but the slit may be configured to open to the outside, and is not limited thereto. For example, the structure provided in the form which penetrated the 1st side wall of a retainer or a housing may be sufficient.

(6) In addition to the above embodiment, the number, shape, arrangement, configuration, and the like of the slits can be changed as appropriate.

(7) In addition to the above embodiment, the shape of the retainer, the mounting position with respect to the housing, the configuration, and the like can be changed as appropriate.

DESCRIPTION OF SYMBOLS 10 ... Housing 12A ... 1st side wall 14 ... Lance 14A ... Engagement part 14B ... Engagement surface 20 ... Retainer 22 ... Upper wall part 30 ... Crimp terminal 33 ... Engaged part 40 ... Joint terminal JC ... Joint connector S ... Slit

Claims (2)

A housing having a cavity into which a female terminal can be inserted from behind;
A male terminal attached to the housing from the front;
A retainer for retaining the female terminal inserted into the cavity by being attached to an attachment hole provided in one side wall of the housing;
A lance provided on the one side wall of the housing and preventing the female terminal inserted into the cavity at an engagement surface provided on a part thereof;
The mounting hole is provided between a rear end of the housing and the lance;
A joint connector, wherein a slit for separating the retainer and the one side wall is provided at least at a part of a boundary portion between the retainer and the one side wall of the housing.   2. The joint connector according to claim 1, wherein the slit is provided in a portion of the boundary portion located between the front side of the retainer and the one side wall of the housing.

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