JP7348030B2 - connector - Google Patents

Description

The present invention relates to a connector.

Conventionally, connectors are widely known that include a terminal having a square cylindrical box portion into which a mating terminal is inserted, and a housing having a terminal accommodating chamber for accommodating the terminal (for example, Patent Document 1 ).

In this type of connector, it is necessary to prevent the terminals from being inserted into the terminal accommodating chamber in the vertical direction opposite to the normal orientation (hereinafter referred to as "upside down insertion"). For this reason, in the connector described in this document, a convex portion (stabilizer) is provided on the outer surface of the box portion of the terminal, and a concave portion corresponding to the convex portion is provided on the inner surface defining the terminal accommodating chamber. As a result, when the terminal is inserted into the terminal accommodating chamber in the correct orientation, the convex part of the terminal can enter the recessed part of the terminal accommodating chamber, so that the terminal can be inserted to the normal position in the terminal accommodating chamber. . On the other hand, when the terminal is inserted upside down, the protrusion of the terminal interferes with a portion other than the recess of the terminal accommodating chamber, making it impossible to insert the terminal to the normal position in the terminal accommodating chamber.

Japanese Patent Application Publication No. 2000-058181

In the connector described in the above document, in order to prevent the terminal from being inserted upside down, a protrusion is provided on the outer surface of the terminal box, so compared to a case where such a protrusion is not provided, the terminal box is The outer dimensions of the part become larger. This can be one of the factors that increases the size of the housing that accommodates the terminals, and by extension, the overall size of the connector.

One of the objects of the present invention is to provide a connector having a structure that can prevent terminals from being inserted upside down without increasing the size of the entire connector.

In order to achieve the above-mentioned object, the connector according to the present invention is characterized by the following [1] to [ 3 ].
[1]
A connector comprising a terminal having a rectangular cylindrical box portion into which a mating terminal is inserted, and a housing having a terminal accommodating chamber for accommodating the terminal, the connector comprising:
The box part has an uneven structure consisting of a recess provided on the outer surface of the box part and a protrusion provided on the inner surface defining the terminal accommodating chamber, and the terminal is inserted into the terminal accommodating chamber in a normal direction. In some cases, the convex portion can enter the recess, so that the terminal can be inserted to the normal position in the terminal accommodating chamber, and the terminal can be inserted into the normal position in the vertical direction perpendicular to the insertion direction of the terminal. When the terminal is inserted into the terminal accommodating chamber in a direction opposite to the direction of the terminal, the convex portion interferes with a portion of the terminal other than the recess, making it impossible to insert the terminal to the normal position in the terminal accommodating chamber. It has a concavo-convex structure configured as follows .
The recess is a slit recessed rearward in the insertion direction from a position offset to one side from the center in the vertical direction on the front end surface in the insertion direction of the side wall forming the box part,
In the connector, the convex portion is a rib that protrudes inward in a width direction perpendicular to the insertion direction and the up-down direction, corresponding to the slit, from the inner surface of the side wall defining the terminal accommodating chamber. thing.
[ 2 ]
A connector comprising a terminal having a rectangular cylindrical box portion into which a mating terminal is inserted, and a housing having a terminal accommodating chamber for accommodating the terminal, the connector comprising:
The box part has an uneven structure consisting of a recess provided on the outer surface of the box part and a protrusion provided on the inner surface defining the terminal accommodating chamber, and the terminal is inserted into the terminal accommodating chamber in a normal direction. In some cases, the convex portion can enter the recess, so that the terminal can be inserted to the normal position in the terminal accommodating chamber, and the terminal can be inserted into the normal position in the vertical direction perpendicular to the insertion direction of the terminal. When the terminal is inserted into the terminal accommodating chamber in a direction opposite to the direction of the terminal, the convex portion interferes with a portion of the terminal other than the recess, making it impossible to insert the terminal to the normal position in the terminal accommodating chamber. It has a concavo-convex structure configured as follows.
The recess is a stepped portion that is formed at a front end continuous from the front end in the insertion direction on the upper surface of the upper wall constituting the box portion, and is recessed downward from other parts of the upper surface of the upper wall,
The convex portion is a connector that is a rib that protrudes downward from the inner surface of the upper wall defining the terminal accommodating chamber, corresponding to the step portion.
[ 3 ]
A connector comprising a terminal having a rectangular cylindrical box portion into which a mating terminal is inserted, and a housing having a terminal accommodating chamber for accommodating the terminal, the connector comprising:
The box part has an uneven structure consisting of a recess provided on the outer surface of the box part and a protrusion provided on the inner surface defining the terminal accommodating chamber, and the terminal is inserted into the terminal accommodating chamber in a normal direction. In some cases, the convex portion can enter the recess, so that the terminal can be inserted to the normal position in the terminal accommodating chamber, and the terminal can be inserted into the normal position in the vertical direction perpendicular to the insertion direction of the terminal. When the terminal is inserted into the terminal accommodating chamber in a direction opposite to the direction of the terminal, the convex portion interferes with a portion of the terminal other than the recess, making it impossible to insert the terminal to the normal position in the terminal accommodating chamber. It has a concavo-convex structure configured as follows.
The recess is formed at a front end continuous from the front end in the insertion direction of a corner located at a boundary between a side wall and a lower wall constituting the box part, and is located above and above the width of the other part of the corner. It is a notch recessed inward in the direction,
The convex portion extends from a corner located at a boundary between a side wall and a bottom wall defining the terminal accommodating chamber, and extends inward in a width direction perpendicular to the upper and vertical directions, corresponding to the notch. The connector is a rib that protrudes from the connector.

According to the connectors having the configurations [1] to "3" above, the recess provided on the outer surface of the box part and the inner surface defining the terminal accommodating chamber have a structure that can prevent the terminal from being inserted upside down. A concavo-convex structure consisting of convex portions is adopted. In this uneven structure, in order to prevent the terminal from being inserted upside down, a recess is provided on the outer surface of the terminal box, so the outer dimensions of the terminal box become larger due to the provision of the recess. Never. Therefore, it is possible to prevent the terminals from being inserted upside down without increasing the size of the housing that accommodates the terminals and, by extension, the entire connector.

Furthermore, according to the connectors having the configurations [ 1 ] to " 3 " above, the above-mentioned uneven structure can be concretely realized.

According to the present invention, it is possible to provide a connector having a structure that can prevent terminals from being inserted upside down without increasing the size of the entire connector.

The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading the mode for carrying out the invention (hereinafter referred to as "embodiment") described below with reference to the accompanying drawings. .

FIG. 1 is a perspective view of an entire terminal used in a connector according to an embodiment of the present invention. FIG. 2(a) is a schematic perspective view showing the front end of a terminal used in the connector according to the first embodiment of the present invention, and FIG. 2(b) is a schematic perspective view showing the front end of the terminal used in the connector according to the first embodiment of the present invention. FIG. 3 is a schematic perspective view showing the front end of a terminal accommodating chamber of a housing used in the present invention. FIG. 3(a) is a sectional view taken along line AA in FIG. 2(b), and FIG. 3(b) is a cross-sectional view of FIG. ). FIG. 4(a) is a schematic perspective view showing the front end of a terminal used in a connector according to a second embodiment of the present invention, and FIG. 4(b) is a schematic perspective view of a connector according to a second embodiment of the present invention. FIG. 3 is a schematic perspective view showing the front end of a terminal accommodating chamber of a housing used in the present invention. 5(a) is a cross-sectional view taken along line BB in FIG. 4(b), and FIG. 5(b) is a sectional view of FIG. ). FIG. 6(a) is a schematic perspective view showing the front end of a terminal used in a connector according to a third embodiment of the present invention, and FIG. 6(b) is a schematic perspective view showing a front end of a terminal used in a connector according to a third embodiment of the present invention. FIG. 3 is a schematic perspective view showing the front end of a terminal accommodating chamber of a housing used in the present invention. FIG. 7(a) is a cross-sectional view taken along the line CC in FIG. 6(b), and FIG. 7(b) is a cross-sectional view of FIG. ). FIG. 8(a) is a sectional view taken along line DD in FIG. 6(b), and FIG. 8(b) shows the state shown in FIG. ).

<Embodiment>
Hereinafter, connectors according to embodiments of the present invention will be described with reference to the drawings. The connector according to the present embodiment includes a terminal 10 (female terminal, see FIG. 1) having a square cylindrical box portion 11 into which a mating terminal (male terminal, not shown) is inserted, and a terminal housing that accommodates the terminal 10. A housing 20 having a chamber 21 is provided. Hereinafter, for convenience of explanation, as shown in FIG. 1 etc., the front-rear direction, the up-down direction, the width direction, the front, the rear, the top, and the bottom will be defined. The front-rear direction, the up-down direction, and the width direction are orthogonal to each other. The front-rear direction corresponds to the direction in which the terminal 10 is inserted into the terminal accommodating chamber 21 .

The terminal 10 is formed by pressing, bending, etc. on a single metal plate, and has a shape extending in the front-rear direction as shown in FIG. The terminal 10 includes a rectangular cylindrical box portion 11 extending in the front-rear direction, a core wire crimping portion 12 located on the rear side of the box portion 11, and a covering crimping portion 13 located on the rear side of the core wire crimping portion 12. , are integrated. By crimping and fixing the exposed core wire at the end of the electric wire (not shown) and the sheath covering the core wire to the core wire crimping part 12 and the covering crimping part 13, respectively, the electric wire extends rearward from the rear end of the terminal 10. An electric wire is connected to the terminal 10 as shown in FIG.

In this way, the terminal 10 to which the electric wire is connected is inserted into the terminal accommodating chamber 21 of the housing 20 from the rear in the normal direction, and is inserted into the terminal accommodating chamber 21 at the normal position. The terminal 10 inserted into the terminal accommodating chamber 21 in the normal direction and up to the normal position is maintained in the normal position and prevented from coming out backwards by engaging with a lance (not shown) provided in the terminal accommodating chamber 21. Prevented. A mating terminal (male terminal, not shown) received in a mating connector (not shown) is inserted from the front end opening of the terminal accommodating chamber 21 into the terminal accommodating chamber 21 of the housing 20 into which the terminal 10 has been inserted in the proper direction and up to the proper position. (omitted) tab will be inserted. As a result, the contact portion 10a provided inside the box portion 11 of the terminal 10 (see FIG. 3(b) etc.) comes into contact with the tab of the mating terminal, so that the terminal 10 and the mating terminal are electrically connected. connected to.

In FIG. 1, a "recess" is not shown in the box part 11, but in reality, a "recess" is formed in the front end of the box part 11, as in the first to third embodiments described later. . The uneven structure formed by the recess of the box part 11 and the "protrusion" formed at the front end of the terminal accommodating chamber 21 of the housing 20 allows the terminal 10 to be inserted upside down (the terminal 10 can be inserted in the normal direction). functions as a structure that can prevent the terminal from being inserted into the terminal accommodation chamber 21 in the opposite direction with respect to the vertical direction. This point will be explained in detail below.

(First embodiment)
First, a first embodiment will be described with reference to FIGS. 2 and 3. As shown in FIG. 2(a), in the first embodiment, the front end surface of each of the pair of side walls 14, the upper wall 15, and the lower wall 16 constituting the box portion 11 of the terminal 10 is A slit 17 recessed rearward as a "recess" is formed from a position offset downward from the center in the vertical direction.

On the other hand, as shown in FIG. 2(b) and FIG. 3(a) showing the AA cross section of FIG. 2(b), a pair of side walls 22 and an upper wall defining the terminal accommodating chamber 21 of the housing 20 23 and the lower wall 24, from a position offset downward from the center in the vertical direction on the inner surface of the front end of each of the pair of side walls 22, a "convex part" extends inward in the width direction, corresponding to the slit 17. A protruding rib 25 is formed.

In the first embodiment, by having the uneven structure consisting of the slit 17 of the terminal 10 and the rib 25 of the housing 20, when the terminal 10 is inserted into the terminal accommodation chamber 21 in the normal direction, the shape shown in FIG. As shown, since the rib 25 can enter into the slit 17, the terminal 10 can be inserted into the terminal accommodating chamber 21 to its normal position. On the other hand, when the terminal 10 is inserted upside down, the rib 25 interferes with the front end surface of the box portion 11 of the terminal 10, making it impossible to insert the terminal 10 to the normal position in the terminal accommodating chamber 21. In this way, in the first embodiment, the uneven structure consisting of the slit 17 of the terminal 10 and the rib 25 of the housing 20 prevents the terminal 10 from being inserted upside down.

(Second embodiment)
Next, a second embodiment will be described with reference to FIGS. 4 and 5. As shown in FIG. 4(a), in the second embodiment, among a pair of side walls 14, an upper wall 15, and a lower wall 16 that constitute the box portion 11 of the terminal 10, the At the front end portion, a stepped portion 18 is formed as a “concave portion” and is recessed downward from the other portion of the upper surface of the upper wall 15.

On the other hand, as shown in FIG. 4(b) and FIG. 5(a) showing the BB cross section of FIG. 4(b), a pair of side walls 22 and an upper wall defining the terminal accommodation chamber 21 of the housing 20 23 and the lower wall 24, at the front end of the inner surface of the upper wall 23, a rib 26 that protrudes downward is formed as a "convex portion" corresponding to the stepped portion 18.

In the second embodiment, by having the uneven structure consisting of the stepped portion 18 of the terminal 10 and the rib 26 of the housing 20, when the terminal 10 is inserted into the terminal accommodating chamber 21 in the normal direction, the shape shown in FIG. As shown in FIG. 2, since the rib 26 can enter into the stepped portion 18, the terminal 10 can be inserted into the terminal accommodating chamber 21 to the proper position. On the other hand, when the terminal 10 is inserted upside down, the rib 26 interferes with the front end surface of the box portion 11 of the terminal 10, making it impossible to insert the terminal 10 to the normal position in the terminal accommodating chamber 21. As described above, in the second embodiment, the uneven structure consisting of the stepped portion 18 of the terminal 10 and the rib 26 of the housing 20 prevents the terminal 10 from being inserted upside down.

(Third embodiment)
Next, a third embodiment will be described with reference to FIGS. 6 to 8. As shown in FIG. 6(a), in the third embodiment, among the pair of side walls 14, the upper wall 15, and the lower wall 16 that constitute the box portion 11 of the terminal 10, the pair of side walls 14 and the lower wall 16 are At the front end continuous from the front end of each of a pair of corners located at the boundary of , a notch 19 is formed as a "recess" that is recessed upward and inward in the width direction from the other part of the corner. .

On the other hand, as shown in FIG. 6(b), FIG. 7(a) showing the CC cross section of FIG. 6(b), and FIG. 8(a) showing the DD cross section of FIG. 6(b), A notch 19 is formed from each corner located at the boundary between the pair of side walls 22 , the upper wall 23 , and the lower wall 24 that define the terminal accommodating chamber 21 of the housing 20 . Corresponding to this, a rib 27 is formed as a "protrusion" that protrudes upward and inward in the width direction.

In the third embodiment, by having the uneven structure consisting of the notch 19 of the terminal 10 and the rib 27 of the housing 20, when the terminal 10 is inserted into the terminal accommodating chamber 21 in the normal direction, the structure shown in FIG. ) and FIG. 8(b), since the rib 27 can enter into the notch 19, the terminal 10 can be inserted into the terminal accommodating chamber 21 to its normal position. On the other hand, when the terminal 10 is inserted upside down, the rib 27 interferes with the front end surface of the box portion 11 of the terminal 10, making it impossible to insert the terminal 10 to the normal position in the terminal accommodating chamber 21. As described above, in the third embodiment, the uneven structure consisting of the notch 19 of the terminal 10 and the rib 27 of the housing 20 prevents the terminal 10 from being inserted upside down.

(action/effect)
As described above, according to the connectors according to the first to third embodiments, the recesses (slits 17, stepped portions 18, notches) provided on the outer surface of the box portion 11 have a structure that can prevent the terminals 10 from being inserted upside down. 19) and convex portions (ribs 25, ribs 26, ribs 27) provided on the inner surface defining the terminal accommodating chamber 21. In this uneven structure, a recess is provided on the outer surface of the box portion 11 of the terminal 10 in order to prevent the terminal 10 from being inserted upside down. The external dimensions will not increase. Therefore, it is possible to prevent the terminals 10 from being inserted upside down without increasing the size of the housing 20 that accommodates the terminals 10 and, by extension, the entire connector.

<Other aspects>
Note that the present invention is not limited to the above embodiments, and various modifications can be adopted within the scope of the present invention. For example, the present invention is not limited to the embodiments described above, and can be modified, improved, etc. as appropriate. In addition, the material, shape, size, number, arrangement location, etc. of each component in the above-described embodiments are arbitrary as long as the present invention can be achieved, and are not limited.

For example, in the first embodiment (see FIGS. 2 and 3), from a position offset downward from the center in the vertical direction on the front end surface of each of the pair of side walls 14 constituting the box portion 11 of the terminal 10, A rib in which a slit 17 is formed and protrudes inward in the width direction from a position offset downward from the center in the vertical direction on the inner surface of the front end of each of the pair of side walls 22 defining the terminal accommodating chamber 21 of the housing 20. 25 is formed. On the other hand, a slit 17 recessed rearward is formed from a position offset upward from the center in the vertical direction on the front end surface of each of the pair of side walls 14 constituting the box portion 11 of the terminal 10, and A rib 25 may be formed to protrude inward in the width direction from a position offset upward from the center in the vertical direction on the inner surface of the front end of each of the pair of side walls 22 defining the chamber 21 . Furthermore, instead of the pair of slits 17 and the pair of ribs 25, only the slit 17 on one side in the width direction and the rib 25 on one side in the width direction may be formed.

In the second embodiment (see FIGS. 4 and 5), the front end portion of the upper surface of the upper wall 15 constituting the box portion 11 of the terminal 10, which is continuous from the front end, is recessed downward from the other portion of the upper surface of the upper wall 15. A stepped portion 18 is formed, and a rib 26 protruding downward is formed at the front end of the inner surface of the upper wall 23 defining the terminal accommodating chamber 21 of the housing 20 . On the other hand, at the front end portion of the lower surface of the lower wall 16 constituting the box portion 11 of the terminal 10, which is continuous from the front end, a stepped portion 18 is formed which is recessed upward from the other portion of the lower surface of the lower wall 16, and A rib 26 that projects upward may be formed at the front end of the inner surface of the lower wall 24 that defines the terminal accommodating chamber 21 of the housing 20 .

In the third embodiment (see FIGS. 6 to 8), at the front end portion continuous from the front end of each of a pair of corners located at the boundary between a pair of side walls 14 and a bottom wall 16 that constitute the box portion 11 of the terminal 10, , a notch 19 recessed above and inward in the width direction from other parts of the corner is formed, and the boundary between the pair of side walls 22 and the bottom wall 24 defining the terminal accommodating chamber 21 of the housing 20. A rib 27 is formed that projects upward and inward in the width direction from each corner located at. On the other hand, at the front end continuous from the front end of each of the pair of corners located at the boundary between the pair of side walls 14 and the top wall 15 that constitute the box part 11 of the terminal 10, the lower part of the corner is lower than the other part of the corner. A cutout portion 19 is formed which is recessed inward in the width direction, and a cutout portion 19 is formed that is recessed inward in the width direction. Ribs 27 may be formed that protrude inward in the width direction. Furthermore, instead of the pair of notches 19 and the pair of ribs 27, only the notch 19 on one side in the width direction and the rib 27 on one side in the width direction may be formed.

Here, the features of the embodiments of the connector according to the present invention described above will be briefly summarized and listed below in [1] to [4].
[1]
A terminal (10) having a rectangular cylindrical box portion (11) into which a mating terminal is inserted, and a housing (20) having a terminal accommodating chamber (21) for accommodating the terminal (10). A connector,
Consisting of recesses (17, 18, 19) provided on the outer surface of the box portion (11) and protrusions (25, 26, 27) provided on the inner surface defining the terminal accommodating chamber (21). It has an uneven structure, and when the terminal 10 is inserted into the terminal accommodating chamber (21) in the normal direction, the convex portion can enter the recessed portion, so that the terminal 10 is inserted into the terminal accommodating chamber (21). 21, and when the terminal (10) is inserted into the terminal storage chamber (21) in the opposite direction to the normal direction with respect to the vertical direction orthogonal to the insertion direction of the terminal (10). The terminal (10) is configured to be unable to be inserted to the normal position in the terminal accommodating chamber (21) due to the protrusion interfering with a portion of the terminal (10) other than the recess. A connector with a textured structure.
[2]
In the connector described in [1] above,
The recess is a slit (17) recessed rearward in the insertion direction from a position offset to one side from the center in the vertical direction on the front end surface in the insertion direction of the side wall (14) constituting the box part (11). and
The convex portion extends inward from the inner surface of the side wall (22) defining the terminal accommodating chamber (21) in a width direction perpendicular to the insertion direction and the up-down direction, corresponding to the slit (17). The connector is a protruding rib (25).
[3]
In the connector described in [1] above,
The recess is formed at a front end portion of the upper surface of the upper wall (15) constituting the box portion (11) that is continuous from the front end in the insertion direction, and is located below the other portion of the upper surface of the upper wall (15). It is a recessed step part (18),
In the connector, the convex portion is a rib (26) that protrudes downward from the inner surface of the upper wall (23) defining the terminal accommodating chamber (21), corresponding to the step portion (18).
[4]
In the connector described in [1] above,
The recess is formed at a front end continuous from the front end in the insertion direction of a corner located at the boundary between the side wall (14) and the lower wall (16) constituting the box part (11), and a notch (19) recessed above the other portions and inward in the width direction;
The convex portion extends from the corner located at the boundary between the side wall (22) and the lower wall (24) defining the terminal accommodating chamber (21) to the upper portion corresponding to the notch (19). and a rib (27) projecting inward in a width direction perpendicular to the vertical direction.

10 terminal 11 box part 14 side wall 15 upper wall 16 lower wall 17 slit (recess)
18 Step part (concave part)
19 Notch (recess)
20 Housing 21 Terminal Accommodation Chamber 22 Side Wall 23 Upper Wall 24 Lower Wall 25 Rib (Protrusion)
26 Rib (protrusion)
27 Rib (convex part

Claims (3)

A connector comprising a terminal having a rectangular cylindrical box portion into which a mating terminal is inserted, and a housing having a terminal accommodating chamber for accommodating the terminal, the connector comprising:
The box part has an uneven structure consisting of a recess provided on the outer surface of the box part and a protrusion provided on the inner surface defining the terminal accommodating chamber, and the terminal is inserted into the terminal accommodating chamber in a normal direction. In some cases, the convex portion can enter the recess, so that the terminal can be inserted to the normal position in the terminal accommodating chamber, and the terminal can be inserted into the normal position in the vertical direction perpendicular to the insertion direction of the terminal. When the terminal is inserted into the terminal accommodating chamber in a direction opposite to the direction of the terminal, the convex portion interferes with a portion of the terminal other than the recess, making it impossible to insert the terminal to the normal position in the terminal accommodating chamber. It has a concavo-convex structure configured as follows .
The recess is a slit recessed rearward in the insertion direction from a position offset to one side from the center in the vertical direction on the front end surface in the insertion direction of the side wall forming the box part,
In the connector, the convex portion is a rib that protrudes inward in a width direction perpendicular to the insertion direction and the up-down direction, corresponding to the slit, from an inner surface of a side wall defining the terminal accommodating chamber. A connector comprising a terminal having a rectangular cylindrical box portion into which a mating terminal is inserted, and a housing having a terminal accommodating chamber for accommodating the terminal, the connector comprising:
The box part has an uneven structure consisting of a recess provided on the outer surface of the box part and a protrusion provided on the inner surface defining the terminal accommodating chamber, and the terminal is inserted into the terminal accommodating chamber in a normal direction. In some cases, the convex portion can enter the recess, so that the terminal can be inserted to the normal position in the terminal accommodating chamber, and the terminal can be inserted into the normal position in the vertical direction perpendicular to the insertion direction of the terminal. When the terminal is inserted into the terminal accommodating chamber in a direction opposite to the direction of the terminal, the convex portion interferes with a portion of the terminal other than the recess, making it impossible to insert the terminal to the normal position in the terminal accommodating chamber. It has a concavo-convex structure configured as follows.
The recess is a stepped portion that is formed at a front end continuous from the front end in the insertion direction on the upper surface of the upper wall constituting the box portion, and is recessed downward from other parts of the upper surface of the upper wall,
In the connector, the convex portion is a rib that protrudes downward from the inner surface of the upper wall defining the terminal accommodating chamber, corresponding to the step portion. A connector comprising a terminal having a rectangular cylindrical box portion into which a mating terminal is inserted, and a housing having a terminal accommodating chamber for accommodating the terminal, the connector comprising:
The box part has an uneven structure consisting of a recess provided on the outer surface of the box part and a protrusion provided on the inner surface defining the terminal accommodating chamber, and the terminal is inserted into the terminal accommodating chamber in a normal direction. In some cases, the convex portion can enter the recess, so that the terminal can be inserted to the normal position in the terminal accommodating chamber, and the terminal can be inserted into the normal position in the vertical direction perpendicular to the insertion direction of the terminal. When the terminal is inserted into the terminal accommodating chamber in a direction opposite to the direction of the terminal, the convex portion interferes with a portion of the terminal other than the recess, making it impossible to insert the terminal to the normal position in the terminal accommodating chamber. It has a concavo-convex structure configured as follows.
The recess is formed at a front end continuous from the front end in the insertion direction of a corner located at a boundary between a side wall and a lower wall constituting the box, and is located above and above other parts of the corner. It is a notch recessed inward in the width direction perpendicular to the direction,
The convex portion is a rib that protrudes upward and inward in the width direction from a corner located at a boundary between a side wall and a bottom wall defining the terminal accommodating chamber, corresponding to the notch. Yes, there is a connector.

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