JPH0313983Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a two-leaf receptacle contact assembly that is small and compact and can be mounted at high density.

(Prior art) Wiring connections for computers, telephone exchanges, etc.
Due to the need for downsizing, high density, high integration, and high speed driving of devices, not only high reliability of electrical contact but also downsizing and high density packaging are required. For example, as shown in FIG. 6, a contact used for connecting such wiring has four elastic leaves 1a, 1b, 2a, 2b protruding forward from the base 3, and a contact that is inserted from the front. Connect the tip of the post terminal to these four leaves 1a, 1b, 2.
There is a receptacle contact which is sandwiched from four directions by a and 2b. Therefore, the four leaves face each other in pairs, and each pair is arranged orthogonally.

If such a receptacle contact is used, there will be four points of contact with the mating post terminal, so two
Although the contact reliability is improved compared to the case of point contact, the two pairs of leaves 1a, 1b and 2a, 2b
Since one of these leaves comes into contact with the fractured surface of the post terminal, there is a problem that very high contact reliability cannot be obtained with this leaf, and the insertion force of the post terminal becomes large. Here, the fractured surface of a post terminal refers to the surface that was cut when cutting a sheet-like conductive plate to make a post terminal, and the surface roughness is rougher than the rolled surface, which is the original sheet surface, and the contact is reliable. The resistance is poor and the insertion force during insertion becomes large. moreover,
In the case of a receptacle contact as shown in Figure 6,
Since the leaf is surrounded from four directions, the contacts become large, and when a plurality of contacts are arranged side by side, the pitch between the contacts tends to become large, making it difficult to increase the packaging density.

(Problem to be solved by the invention) For this reason, many contacts with two leaves are also used. In this case, the two leaves are arranged facing each other, and the elastic force of these leaves is used to sandwich the roll surface of the post terminal, which not only ensures contact reliability but also reduces insertion force. This is an attempt to increase the packaging density by reducing the pitch between contacts. However, the side end surface of the two leaves is a broken surface, and this side end surface often comes into contact with the inner wall of the housing. Even if it is removed, it may remain spread out because the side end surface is in contact with the inner wall of the housing. Even if the post terminal is inserted again in this state, the leaves will remain spread out and the elastic force of the leaves will not be sufficient, which may result in poor contact between the post terminal and the receptacle contact. In other words, in the conventional two-leaf receptacle contact, the elastic clamping force of the leaf decreases due to the contact between the leaf side end surface and the inner wall of the housing, and the contact reliability between the receptacle contact and the mating post terminal may decrease. It was hot.

(Means for solving the problems) In view of the above, the present invention aims to obtain a receptacle contact assembly that is small and compact, can be mounted at high density, and has high contact reliability. As a means for this purpose, the receptacle contact assembly of the present invention is constructed as follows.

That is, the receptacle contact assembly of the present invention includes a receptacle contact having a terminal receiving portion consisting of a pair of vertically opposed leaves for receiving and holding a mating terminal, and an insulating housing having an insertion hole into which the receptacle contact is inserted and held. The receptacle contact has a positioning part having a predetermined width on the rear side of the receiving part, a press-fitting part on the rear side of the positioning part, and a protrusion extending back and forth in the center of the side wall of the insertion hole. The receptacle contact is positioned so that the shaped rib comes into contact with the side of the positioning part and separates both sides of the leaf from both side walls of the insertion hole, and furthermore, the front part of the protruding rib fits between the leaves and The front ends of the leaves are vertically spaced apart by a predetermined distance.

(Function) When the two-leaf receptacle contact assembly as described above is used, the front ends of the two leaves constituting the receiving portion are vertically separated by a predetermined distance by the protruding ribs. To easily insert a terminal and to surely guide the mating terminal into a receiving part. Furthermore, since both sides of both leaves are separated from both side wall surfaces of the insertion hole, the clamping force of the leaves is reduced due to contact between the leaf side end and the inner wall surface of the insertion hole as in conventional two-leaf receptacle contacts. The contact reliability between the leaf and the mating terminal is high.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described using the drawings.

FIG. 1 is a perspective view showing a receptacle contact 10 constituting the receptacle contact assembly of the present invention. This receptacle contact 10 is formed by punching and bending a conductive metal plate, and has a pair of vertically opposed leaves 11 and 12 forming a terminal receiving part for receiving a mating terminal at the front part (left side in the figure). And this leaf 11, 12
A positioning part 13 having a U-shaped cross section and having a predetermined width and connecting both leaves 11 and 12 to the rear side of the
Further, on the rear side of this positioning part 13, there is a press-fitting part 14 in which locking protrusions 14a and 14b are formed on both sides. Note that contact legs 15 are formed to extend rearward from the press-fit portion 14.

2 and 3 show a receptacle contact assembly constructed by inserting this receptacle contact 10 into an insertion hole 21 formed in a housing 20 made of an insulating material, and FIG. 2 shows the above assembly. Plane sectional view of, 3rd
The figure is a front sectional view. As can be seen from this figure, the housing 20 has an insertion hole 21 extending back and forth, and this insertion hole 21 has a large opening at the rear end (the left end in the figure) to allow insertion of a receptacle contact. A terminal insertion opening 23 into which a mating terminal is inserted is formed at the front end (right end in the figure). Further, a protruding rib 22 is formed approximately at the center of the inner wall of the insertion hole 21, extending back and forth and projecting into the insertion hole 21.

The receptacle contact 10 is inserted from the rear side (left side in the figure) of the insertion hole 21, and at this time, its press-fitting part 14 is press-fitted into the rear part of the insertion hole 21, and locking projections are formed on the inner walls of the press-fitting grooves 14a and 14b in the rear part. 1
4a and 14b dig in, and the receptacle contact 10 is retained in the insertion hole 21 of the housing 20. Further, as shown in FIG. 4, which shows a cross section taken along the arrow - in FIG. , right side end surface 13
b, 13c abut against the side wall of the insertion hole 21. That is, when the predetermined width of the positioning portion 13 is pushed by the protruding rib 22, it is sandwiched between the protruding rib 22 and the opposing inner wall side. Lateral positioning within the insertion hole 21 is performed by this positioning portion 13 and the press-fitting portion 14.

Here, the width of the leaves 11 and 12 in the lateral direction is smaller than the width of the insertion hole 21, as can be clearly seen from FIG.
When the lateral positioning is performed by the press-fitting part 14, both ends of both leaves 11 and 12 are aligned with the insertion hole 2.
It is arranged to be positioned at a distance from the inner wall of No. 1. That is, both leaves 11 and 12 are positioned so that they do not come into contact with the inner wall of the insertion hole 21. As a result, when the leaves 11 and 12 clamp the mating terminal inserted through the terminal insertion opening 23, the gripping force is not reduced due to contact with the inner wall of the insertion hole 21, and the gripping force is reduced. The mating terminal can be held between the terminals to ensure reliable contact.

Furthermore, the protruding rib 22 formed in the insertion hole 21 extends back and forth, and its front part enters between the front ends 11a, 12a of the leaves 11, 12, and the front end of both leaves 11, 12. 11
a, 12a. This state is shown in detail in FIG. 5, which shows a cross section taken along the arrow - in FIG. is held between the leaves, which allows leaf 1 to
The front end portions 11a and 12a of No. 1 and No. 12 are spaced apart from each other and face each other. In this way, the front ends 11a and 12a of both leaves 11 and 12 are positioned at the center in the vertical direction by the protruding rib 22 formed in the center in the vertical direction of the insertion hole 21. Furthermore, since the front ends 11a, 12a are separated and face each other, the mating terminal inserted from the insertion opening 23 is easily guided between the front ends 11a, 12a, and the front ends 11a, 12a of the leaf and the tip of the mating terminal are easily guided. It is possible to prevent a situation where the mating terminal cannot be inserted due to collision between the mating terminal and the mating terminal. Furthermore, since the protruding rib 22 prevents contact between the left end surfaces of the leaves 11 and 12 and the mating terminal, contact between the fractured surfaces of the leaves, which do not have very good electrical contact, and the mating terminal is prevented.
Deterioration in contact reliability can be prevented.

Although this example shows an example in which the protruding rib is provided only on one side of the insertion hole, it may be provided on both sides of the protruding rib. Contact with the broken surface of the end can be reliably prevented.

(Effect of the invention) As explained above, according to the invention, the receptacle contact inserted into the housing is
The leaf is positioned so that both sides of the leaf are separated from the inner wall of the insertion hole by the press-fit locking into the housing insertion hole at the press-fitting part and the contact with the protruding rib of the housing at the positioning part. Since there is no contact between the side surface of the leaf and the inner surface of the insertion hole, the elastic clamping force of the leaf with respect to the mating terminal is prevented from decreasing, and the reliability of contact with the mating terminal can be improved. Furthermore, the projecting ribs extend back and forth and are sandwiched between the front parts of the leaves, so that the front parts of the leaves face each other while being separated from each other in the vertical direction. The front part can be positioned in the vertical direction, and furthermore, the mating terminal inserted between the leaves can be correctly guided between the leaves, and collision between the mating terminal and the front end of the leaf can be prevented. I can do it.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a receptacle contact constituting a receptacle contact assembly according to the present invention, FIGS. 2 and 3 are a cross-sectional plan view and a cross-sectional front view showing the receptacle contact, and FIGS. 4 and 5 are 3 is a cross-sectional view taken along arrows ``-'' and ``-'' in FIG. 3, and FIG. 6 is a perspective view showing an example of a conventional receptacle contact. 10... Receptacle contact, 11, 12
... Leaf, 13 ... Positioning part, 14 ... Press-fitting part, 20 ... Housing, 21 ... Insertion hole, 22
...Protruding ribs.

Claims (1)

[Scope of Claim for Utility Model Registration] A receptacle contact made of a conductive elastic material and having a terminal receiving portion consisting of a pair of vertically opposed leaves that receive and hold a mating terminal inserted from the front end side, and a receptacle contact into which the receptacle contact is inserted. In a receptacle contact assembly comprising a housing made of an insulating material and having an insertion hole to be held, the receptacle contact has a positioning part having a predetermined width on the rear side of the terminal receiving part, and a positioning part on the rear side of the positioning part. the receptacle contact has a press-fitting portion that is press-fitted into the inner wall of the insertion hole when the receptacle contact is inserted into the insertion hole; the insertion hole has a protruding rib extending back and forth in the center of the side wall; The receptacle contact is positioned by the shaped ribs coming into contact with the side portions of the positioning portion of the receptacle contact inserted into the insertion hole, thereby separating both sides of the leaf from both side walls of the insertion hole, and A leaf receptacle contact assembly characterized in that a front portion of the protruding rib fits between the pair of leaves to separate the front ends of the leaves vertically by a predetermined distance.