JP2596913Y2 - Female terminal - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a female terminal having an elastic contact piece for maintaining reliable contact with a mating male terminal to be fitted. The present invention relates to an improvement in a structure for preventing deformation due to deformation.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Utility Model Application Laid-Open No. 58-62564, a female mold having an elastic contact piece for maintaining reliable contact with a mating male terminal to be fitted. Terminals are known. This kind of elastic contact piece is bent from the front end of the female terminal and extends rearward inside the female terminal, and the bent portion of the elastic contact piece maintains reliable contact with the fitted male terminal. The elasticity required to achieve this is provided.

In a female terminal provided with such an elastic contact piece, when the male terminal is inserted obliquely with respect to the female terminal when fitted with the male terminal, the tip of the male terminal is The elastic contact piece contacted with the elastic contact piece is pressed obliquely downward and deforms more than necessary, and there is a possibility that the desired elasticity of the elastic contact piece may be impaired. In the female terminal described in the above publication, in order to prevent the elastic contact piece from being deformed beyond the elastic range, the female terminal protrudes inward from the left and right side walls of the female terminal and is located below the elastic contact piece. The elastic contact piece is provided at one predetermined position with respect to the entire length in the longitudinal direction of the elastic contact piece, and the elastic contact piece which is pressed by the male terminal and moves downward moves by a predetermined amount or more downward by this protrusion. I try to prevent it.

[0004]

By the way, a force is not always uniformly applied to the elastic contact piece over its entire length in the longitudinal direction, and the force may be concentrated on a part of the elastic contact piece.
Even in the case where such a localized concentrated force acts, it is desirable that the elastic contact piece can be prevented from being deformed beyond the elastic range at that portion.

However, in the above-described conventional structure, the protrusion is provided only at one predetermined position with respect to the entire length in the longitudinal direction of the elastic contact piece, so that a force acts intensively at the position where the protrusion is provided. In this case, even if it is possible to prevent the deformation of the elastic contact piece at that part, if the force is concentrated on the position where the projection is not provided, the elastic contact piece will increase the elastic area at that part. There was a high possibility that deformation beyond that could not be prevented.

Further, in the conventional structure, when the elastic contact piece is pressed downward by a strong force, the projection which should originally prevent the elastic contact piece from moving downward by a predetermined amount or more can sufficiently release the strong force. There was also a problem that it could not be supported and bend.

The present invention has been made in view of the above circumstances, and has as its object the purpose of the present invention when the elastic contact piece is locally acted on, or even when a strong force acts on the whole. An object of the present invention is to provide a female terminal that can prevent deformation beyond an elastic range.

[0008]

In order to achieve the above object, a female terminal according to the present invention comprises a base extending in the front-rear direction, left and right side walls rising from both left and right sides of the base, and a front end of the base. And a resilient contact piece having a contact protrusion extending inward from the rear and having a contact projection, wherein a part of the resilient contact piece is disposed so as to overlap the structure of the side wall portion at positions along both sides, and the resilient contact piece is provided. In the female terminal in which the contact piece is prevented from being deformed beyond the elastic region, the overlapping arrangement of the part of the elastic contact piece and the structure of the side wall portion is at least near the protrusion of the elastic contact piece. The elastic contact piece is located at least two positions in the middle of the inclined portion of the elastic contact piece that is separated from the protrusion in the forward direction.

[0009]

According to the female terminal of the present invention, by providing a plurality of overlapping arrangements in the length direction of the elastic contact piece, the elastic terminal which moves downward when a downward force acts is provided. Since the contact piece can be supported at a plurality of positions in the longitudinal direction, it is possible to prevent the elastic contact piece from being deformed beyond the elastic region at that portion. In particular, according to the present invention, since the overlapping arrangement is provided at least at two positions including the position near the protrusion of the elastic contact piece and the inclined portion, even when force is applied to various positions in the longitudinal direction of the elastic contact piece. There is no possibility that the elastic contact piece is deformed, and a more reliable electrical connection can be guaranteed as compared with the conventional product.

[0010] In particular, the overlapping arrangement of a part of the elastic contact piece and the structure of the side wall portion is performed by using a projection formed so as to project inward from the side wall portion and a wide portion provided at a position corresponding to the elastic contact piece. In the case where the projections are constituted by the parts, the elastic contact pieces can be brought into contact with the vicinity of the base of the projections as compared with the conventional structure, so that the projections are less likely to bend even when the same force acts. Therefore, even when a strong force acts on the elastic contact piece, the protrusion can sufficiently support the downward movement of the elastic contact piece, and the elastic contact piece is more effectively deformed beyond the elastic range. Can be prevented.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a female terminal according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a side view showing a schematic configuration of a female terminal according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the female terminal shown in FIG. 1, and FIG. 3 is a sectional view taken along line III-III in FIG. FIG. 4 is a sectional view taken along the line IV-IV in FIG. 4, and FIG. 5 is a sectional view taken along the line VV in FIG.

The illustrated female terminal 10 of the present embodiment has a base extending in the front-rear direction of the female terminal 10 (the left-right direction in FIGS. 1 to 3 and the direction perpendicular to the paper in FIGS. 4 and 5).
11 and the left and right side walls rising from the left and right ends of the base 11
12 and a base portion from the upper end of the left and right side wall portions 12.
It is a box type that also has an upper wall 13 extending substantially parallel to 11.

From the front end of the base 11, an elastic contact piece 15 extends rearward inside the female terminal 10 while bending backward. The elastic contact piece 15 includes an inclined portion 15b extending from the front end of the female terminal 10 and a protrusion 15c usable for contact with a mating terminal. In addition, the elastic contact piece 15 extending rearward
In the vicinity of the free end 15a, there is provided an assist leaf (supporting piece) 16 which is cut and raised from the base 11 and whose tip is located below the free end 15a. Assist leaf 16
When the male contact (not shown) is correctly inserted into the female terminal 10, the elastic contact piece 15 contacts the free end 15 a of the elastic contact piece 15 which moves downward, whereby the elastic contact piece 15 It is configured to increase the contact pressure.

In this embodiment, the left and right projections cut and raised from the left and right side wall portions 12 and projecting inward at two positions spaced apart from each other along the longitudinal direction of the elastic contact piece 15 by a predetermined distance.
17 is provided below the elastic contact piece 15 at a predetermined distance from the elastic contact piece 15. On the other hand, the portion of the elastic contact piece 15 corresponding to the left and right protrusions 17 (the part that contacts the left and right protrusions 17 when the elastic contact piece 15 bends downward) is larger than the other parts. It is formed wide.

As described above, in this embodiment, since the left and right projections 17 are provided at two positions at a predetermined interval along the longitudinal direction of the elastic contact piece 15, the male terminal can be correctly inserted. Even when the force acts on a part of the elastic contact piece 15 without being concentrated, each projection 17 causes the elastic contact piece 15 to
Since it is supported at two positions separated in the longitudinal direction, the elastic contact piece 15 can be prevented from being locally deformed beyond the elastic range.

Further, since the portions of the elastic contact pieces 15 corresponding to the left and right protrusions 17 are formed wide, when the elastic contact pieces 15 are bent downward, the bases of the respective protrusions 17 are formed. The protrusions 17 come into contact with the protruding portions 17 from the portion close to. For this reason, even when a strong force acts on the elastic contact piece 15, each projection 17 can firmly support the strong force applied to the elastic contact piece 15 without bending.

Although the embodiment of the female terminal according to the present invention has been described above, the female terminal according to the present invention is not limited to the specific embodiment of the embodiment, and various changes can be made. It is possible.

For example, in the above-described embodiment, the projections are provided at two positions at a predetermined interval along the longitudinal direction of the elastic contact piece. However, the positions where the projections are provided may be further increased.

In the above embodiment, the protrusions are provided on both the left and right side walls. However, the protrusions may be provided on only one of the side walls, or the front and rear may be alternately reversed. It may be provided.

Further, the female terminal of the above embodiment is of a box type having a base, left and right side walls and an upper wall, but the present invention is directed to a female terminal having no upper wall. Needless to say, the present invention can be applied to terminals.

[Brief description of the drawings]

FIG. 1 is a side view showing a schematic configuration of a female terminal according to an embodiment of the present invention;

FIG. 2 is a longitudinal sectional view of the female terminal shown in FIG. 1;

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a sectional view taken along line VV in FIG.

[Explanation of symbols]

 10 Female terminal 11 Base 12 Side wall 15 Elastic contact piece 15b Inclined part 15c Projection 17 Projection

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01R 13/11 H01R 13/115 H01R 13/193

Claims (1)

(57) [Scope of request for utility model registration] 1. A base extending in the front-rear direction, left and right side walls rising from both left and right sides of the base, and an elastic contact piece extending from a front end of the base inward and rearward and having a contact projection. A female terminal having a portion of the elastic contact piece disposed so as to overlap the structure of the side wall portion at a position along both sides, and preventing the elastic contact piece from being deformed beyond an elastic range. The overlapping arrangement of the part of the elastic contact piece and the structure of the side wall portion is at least a position near the protrusion of the elastic contact piece, and an inclined portion of the elastic contact piece separated from the protrusion in a forward direction. Characterized in that it is arranged at least at two positions in the middle of the female terminal.