JPH0312224Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a contact used for connecting electrical cables, and in particular to a contact that is arranged upright on a printed circuit board at regular intervals from each other. The present invention relates to a contact suitable for detachably connecting individual cables to a shaped terminal.

[Conventional technology]

Conventionally, a contact 10 having the shape shown in FIG. 3 has been used as a contact for electrically and mechanically connecting a post-shaped terminal and a cable. The contact 10 has an overall cylindrical shape with a rectangular cross section. A pair of connection pieces 12a and 12b each having a pressure welding slit 11 having a width narrower than the thickness of the core wire of a cable (not shown) to be connected is formed on two opposing sides of the contact 10, respectively. Other opposing 2
Contact spring pieces 14a and 14b having contact portions 13a and 13b are formed at one end of the surface. Further, a claw piece 15 is formed near one pair of connecting pieces 12a to prevent the connecting piece from coming off when assembled into an insulating housing (not shown).

Such a contact 10 is generally inserted into an insulating housing (not shown) and then connected to a connecting piece 12a,
By pushing the cable into the pressure welding slit 11 of 12b, it is electrically and mechanically connected to the cable. A pin terminal, which is a corresponding contact, is inserted between the contact spring pieces 14a and 14b.

[Problem that the invention attempts to solve]

However, the contact 10 described above had the following problems.

That is, a pair of U-shaped contact spring pieces 14a, 14
Since the structure has contact parts 13a and 13b formed inside the tip of b, if a pin terminal that is too thick is inserted, the contact parts 13a and 13b will touch the contact spring piece 14.
a, 14b, and the contact portions 13a, 13b lose their elasticity. In addition, in order to obtain sufficient elasticity, if the contact spring pieces 14a and 14b are made long,
The overall size of the contact 10 becomes large.

Therefore, an object of the present invention is to provide a contact that is small enough to allow sufficient displacement of the contact portion.

[Means for solving problems]

According to the present invention, facing each other at intervals,
first and second connecting pieces that connect different parts in the longitudinal direction of the core wire of the cable; a band-like neck portion extending between one side of the first and second connecting pieces; and the above-mentioned portion of the neck portion. The second connecting piece is bent at a right angle from the side of the portion close to the first connecting piece to the same side as the first and second connecting pieces, and the second connecting piece is bent in the direction of the mutual spacing between the first and second connecting pieces. It integrally has a flexible spring piece that extends beyond and makes contact with the corresponding contact, and the neck part is bent and extended in a step-like manner so as to be located outside the movable area due to the deflection of the spring piece. You can get a contact that is characterized by:

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

Referring to FIG. 1, a contact 20 according to an embodiment of the present invention is assembled into an insulating housing 21. As shown in FIG. Referring also to FIG. 2, the contact 20 has a strip-like neck portion 23 having a yoke portion 22.
and first and second connecting pieces 25a, 25b having press-fitting slits 24a, 24b integrally formed at both longitudinal ends of the neck portion 23. The first and second connecting pieces 25a and 25b are bent at right angles to the neck portion 23 at positions indicated by bending lines l ₁ and l ₂ so as to face each other with an interval between them. Press-fit portions 2 are also provided on the sides of the first and second connection pieces 25a and 25b, respectively, for positioning the contacts 20 when they are accommodated in the insulating housing 21.
6a and 26b are formed.

a portion of the neck portion 23 close to the first connection piece 25;
That is, flexible contact spring pieces 27a and 27b are integrally formed on both sides of the yoke portion 22. These spring pieces 27a and 27b are also bent at right angles to the yoke portion 22 at positions indicated by fold lines l ₃ and l ₄ so as to face each other. As a result, the spring piece 27
a, 27b extend substantially parallel to the mutual spacing direction of the connecting pieces 25a, 25b. Furthermore, the tips of the spring pieces 27a and 27b are once slightly inward, and the leading ends are bent outward.

Further, the neck portion 23 itself is bent at the bending lines l ₅ and l ₆ to form a stepped shape. As a result of bending the neck portion 23 itself in this way, the spring piece 27
a, 27b are the first and second connection pieces 25a, 25
It extends outward beyond the second connecting piece 25b in a direction parallel to the mutual spacing direction of b. Further, as a result, both the second connecting piece 25b and the neck portion 23 are located outside the movable area due to the deflection of the spring pieces 27a, 27b.

The insulating housing 21 is laterally provided with contact housing chambers 30 for accommodating the contacts 20 in a spaced-apart manner. The contact storage chamber 30
An opening 31 for inserting the contact 20 is provided on the top surface, and a hook piece 33 for holding the cable is provided on one vertical surface 32 in the direction in which the housing chamber 30 is arranged.
However, terminal insertion openings 35 through which post-shaped terminals pass are formed in the other vertical surface 34, respectively. Furthermore, both inner vertical surfaces 32 of the contact accommodation chamber 30,
34, there is a press-fit portion 26 of the contact 20.
Slits 37a and 37b are vertically formed to engage the slits 37a and 26b.

The opening 3 of the insulating housing 21 having such a shape
Contact spring piece 27
a, 27b correspond to the terminal insertion opening 35,
The press-fit parts 26a, 26b are slits 37a, 37b.
When the contact 20 and the insulating housing 21 are pushed into the contact housing chamber 30 while being engaged with each other, the contact 20 and the insulating housing 21 are integrated.

In this way, the pressure welding slits 24a, 2 of the contacts 20 integrated into the insulating housing 21
When a cable (not shown) is inserted from above 4b, the cable and contact 20 are electrically and mechanically connected. That is, when the cable is press-fitted into the pressure welding slits 24a, 24b, the width of the pressure welding slits 24a, 24b is narrower than the diameter of the core wire of the cable.
Both side edges of b cut the insulating coating and come into electrical and mechanical contact with the core wire in pressure contact. At the same time, since the outer periphery of the cable is press-fitted between the hook pieces 33, the core wires are held in the pressure-welding slits 24a and 24b, and the cable is prevented from coming off upward.

Thereafter, when a post-shaped terminal (not shown) is inserted through the terminal insertion opening 35, the post-shaped terminal comes into contact with the contact spring pieces 27a, 27b and is held between them.

In this way, the contact 20 electrically and mechanically connects the cable and the post-shaped terminal, but when the post-shaped terminal is pushed between the contact spring pieces 27a and 27b, the contact spring pieces 27a and 27b are inserted into the contact housing chamber. Since it opens horizontally using the space inside 30, it can be sufficiently displaced and the pin terminal can be held securely. In addition, the spring pieces 27a, 27 can be used without increasing the overall size of the contact 20 so much.
Sufficient elasticity can be obtained by lengthening b.

[Effect of idea]

As described above, according to the present invention, although the length of the cable in the longitudinal direction is short, the flexible spring piece for contacting the corresponding contact can be made sufficiently long. Therefore, it is possible to provide a contact that can sufficiently take the displacement of the contact portion.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a contact according to an embodiment of the present invention and an insulating housing housing it, FIG. 2 is an exploded view of the contact, and FIG. 3 is a perspective view of a conventional contact. In the figure, 10 and 20 are contacts, 11 and 24
a, 24b are pressure welding slits, 12a, 12b, 2
5a, 25b are connection pieces, 14a, 14b, 27
Reference numerals a and 27b denote contact spring pieces, 21 an insulating housing, 30 a contact accommodating chamber, and 35 a terminal insertion opening.

Claims (1)

[Claims for Utility Model Registration] 1. First and second connecting pieces that face each other at intervals and connect different parts in the longitudinal direction of the cable core, and the first and second connecting pieces. A band-like neck portion extending between one side, and a side portion of the neck portion near the first connecting piece bent at a right angle to the same side as the first and second connecting pieces, and It integrally includes a flexible spring piece for contacting the corresponding contact, which extends beyond the second connection piece in the direction of mutual spacing between the second connection pieces, and the neck portion is formed by the bending of the spring piece. A contact characterized by being bent and extending in a stepwise manner so as to be located outside the movable area. 2. The contact according to claim 1, wherein the neck portion extends in a stepped manner so as to be located outside a movable region due to the deflection of the spring piece. 3. The utility model according to claim 2, wherein the spring piece extends beyond the second connecting piece in a direction parallel to the mutual spacing direction of the first and second connecting pieces. contact.