JPS61116778A - Female contact - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a female contact into which a terminal such as an IC is inserted.

A plurality of such female contacts are inserted into holes in an insulator to form a socket, which is used as an IC socket for testing, a socket for mounting an IC on a printed board, or the like.

[Conventional technology]

A conventional female contact is shown in perspective view in Fig. 4(a) and (bl).

(al is a contact spring material in a state that has been pressed before forming a female contact, and (b) is a female contact in a state in which the contact spring material in (a) is bent and formed.

In the figure, 1' and 2' are contact pieces, and 3' is an external terminal that also serves as a bent portion for facing the contact pieces 1' and 2'.

To make a conventional female contact, as shown in (a), a plate-shaped spring material is first pressed into an elongated shape in which three contact pieces 1' and 2' are connected vertically.

Then, as shown in (b), first bend the pressed plate-shaped spring material in the vertical direction from the bending part 3, and then use a bending mold to form three contact pieces 1°' and 2', respectively. It was a female contact that was bent to form a shape that made contact at one point.

[Problem that the invention seeks to solve]

Conventional female contacts are made by press-cutting the plate-like spring material into a vertically elongated shape as shown in Fig. 4 (a), so many parts are removed, making it impossible to use the material effectively. .

Furthermore, when the contact piece is in contact with both sides, the distance to the bending part (L in FIG. 4(a)) is long, so a large bending device is required, and it is difficult to increase the bending speed.

The present invention aims to solve the above problems.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention includes a pair of contact pieces facing each other that are bent so as to sandwich an inserted terminal, and a pair of contact pieces that are integrally formed at the ends of the contact pieces, and that the contact pieces are formed integrally with each other. A female contact is provided, characterized in that it has a contact root part which is doubled in a substantially U-shape so as to face each other, and a terminal protruding downward from the contact root part.

[Effect]

By performing press punching with the three contact pieces parallel to each other and bending one of the contact pieces laterally, the amount of material that is removed is reduced. Furthermore, since the bending distance is shortened, the bending die can be made smaller, and high-speed bending can be performed.

〔Example〕

Hereinafter, the present invention will be explained in detail with reference to the drawings.

1 and 2 are perspective views showing a first embodiment of the present invention.

In the figure, 1.2 is a pair of contact contact pieces that sandwich a terminal to be inserted that is attached to an electronic component such as an IC, la is an overhanging portion that contacts the bottom 8a of a contact receiving hole 8b of an insulator 8, which will be described later, and 3 is a pair of contact pieces. Contact contact piece 1.2
4 is an external connection terminal, 5 is a bent part for facing each other.
There is a tarp. Further, 8 is an insulator of a socket into which a female contact is inserted, and has a plurality of contact receiving holes 8b each having a bottom portion 8a.

First, as shown in FIG. 1(a), a pair of contact pieces 1.
2 are parallel and have a terminal 4 and a l-p sun 5, and the contact contact piece 1.2 and the tarp sun 5 extend the continuous bending portion 3 approximately in
The contact pieces 1 and 2 are each bent into a shape as shown in (b) using a bending die. After that, connect the connecting portion 6 so as to leave the terminal 4. When the coupe sun 5 is separated from the contact pieces 1 and 2 (C
A female contact according to the present invention as shown in 1 is completed.

At this time, the holding part 7 which holds the terminal to be inserted is connected to the projecting part 1a of the contact contact piece 14 as shown in FIG. 2 (al).
By making the shape lower than the horizontal position, the holding part 7a,
? A gap is formed between the holding portions 7a, and the respective holding portions 7a
, 7b are formed slightly shifted vertically and horizontally. As a result, when the contact piece 1.2 is inserted into the hole 8b of the insulator 8, the protruding portion 1a of the contact piece is lifted up by the bottom 8a of the insulator 8, as shown in FIG. 2(b).
The clamping portions 7a and 7b of the terminal to be inserted are in contact with each other with a constant pressure. With such a contact structure, it is possible to more strongly pinch the inserted terminal than in the case where they are brought into contact from the beginning, and it is also possible to prevent the clamping force from weakening.

The contact spring material after being pressed out; (b) shows a female contact formed by bending an Al contact spring material; (C1 represents an insulator into which the female contact is inserted).

In the figure, 11.12 is a pair of contact contact pieces that sandwich the inserted terminal, 13.14 is a protrusion provided on one side of the female contact, and 13' is a pair of contact contact pieces 11.12 facing each other. 15 is an external connection terminal, 16 is a connecting portion, 17 is a sun for J-bu, 18
1 is an insulator, and 19 is a recess for guiding insertion of a female contact.

In this embodiment, as in the first embodiment, the spring material of the contact is first pressed out so that it has substantially U-shaped contact pieces 11 and 12. At this time, as shown in (a), the width β of the pair of parallel contact pieces 11, and the width I of 12.
The relationship tz is set to 17<12, and the distance 13 between the contact pieces 11 and 12 is set to a certain length, and protrusions 14 are provided on both sides thereof. In addition, the external connection terminal 15, the bifurcated connecting part 16, and the tarp sun 1
7 is provided similarly to the first embodiment.

Thereafter, it is bent from the bent portion 13'. At this time, the bent part 1
Leave 3' in a U shape without making them stick together. Then, using a bending mold, the contact pieces 11 and 12 are bent into shapes such as those shown in FIG. It is separated from the connecting part 16, leaving the terminal 15. Then, a female contact as shown in fbl is completed. Then, the female contact insulator 18 is formed by engaging the convex portions 13 and 14 of the female contact with the concave portion 19 of the insulator.
Insert into.

The female contact of this embodiment produces the following effects.

That is, by changing the width of the pair of contact pieces 11.12, the width of the pair of contact pieces 11.12 can be changed.
When facing each other, there is no longer a case where they do not match and shift.

By providing convex portions on both sides and bending one side into a U-shape, it becomes a guide when inserting into the insulator 18, making it easier to insert, and the U-shaped portion is slightly wider than the recess 19 of the insulator. Because of this, its spring properties overlap and it can be inserted accurately without falling out.

[Effects] According to the female contact of the present invention, if the female contact is formed by first making the three contact contact pieces parallel and then bending them laterally, the portion of the plate-shaped spring material that needs to be removed will be reduced, and it can be used effectively. It is possible to reduce costs. Furthermore, when both sides are in contact, the distance to the bending portion is shortened, and the time required for bending is shortened. Furthermore, by shifting the gripping parts of each of the three contact pieces vertically and horizontally before inserting them into the insulator, the gripping force of the gripping parts becomes stronger when they are inserted into the insulator, and it can be held more accurately. Long lifespan.

[Brief explanation of drawings]

1 and 2 are diagrams for explaining a first embodiment of the female contact of the present invention, FIG. 3 is a diagram for explaining a second embodiment of the female contact of the present invention, and FIG. 4 is a diagram for explaining a conventional female contact. FIG. 3 is a diagram for explaining a female contact. [Explanation of symbols] 1.2, 11.12...Contact contact piece 3.13'
・・・・・・・・・・・・Bending part 4.15...
・・・・・・・・・・・・・・・External connection terminal 13.1
4・・・・・・・・・・・・Convex part that serves as a guide when attaching the insulator 1 Figure 2 (phantom (b) (L) (b) (υ) 4 Figure ( b)

Claims (5)

[Claims] (1) A female contact formed by bending a sheet of plate-shaped spring material and inserted into an insulator, including a pair of contact pieces facing each other that are bent so as to sandwich the inserted terminal, and the contact. integrally formed at one end of the contact,
A female contact characterized in that the contact pieces have a substantially U-shaped contact root portion that is double folded so as to face each other, and an external contact terminal that projects downward from the contact root portion. (2) The pair of contact pieces are formed so as to have a certain gap between their clamping parts, and when the female contact is inserted into an insulator, at least one of the contact pieces is elastically deformed and the contact piece is The female contact according to claim 1, wherein the holding portions of the contact pieces are in contact with each other. (3) The female contact according to claim 1, wherein the pair of contact pieces are formed to have different width dimensions. (4) The female contact according to claim 1, wherein a convex portion is integrally formed on a side of the contact root portion to perform a guide function for the female contact with respect to the insulator. (5) The base of the contact is double folded in a substantially U-shape with a certain gap, and when the female contact is inserted into the insulator, the base of the contact adheres to the insulator due to its elasticity. A female contact according to claim 1, characterized in that: