KR910004992Y1 - Connector - Google Patents

Abstract

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Description

Electrical connector

1 is a three-dimensional view of an embodiment of the present invention.

FIG. 2 is a cross sectional view along line A-A in FIG.

3 is a three-dimensional view of a cross section along the centerline of a U-shaped groove showing a contact post to be inserted into the groove;

4 is a horizontal cross-sectional view of the post holding plate of the electrical connector according to the present invention.

5 is a three-dimensional view of a conventional electrical connector.

6 is a sectional view showing a conventional post fixing method.

* Explanation of symbols for main parts of the drawings

10 housing 11 joining surface

12a, 12b: housing reset 14: back of mating surface

15: post holding plate 16: U-shaped groove

16a, 16b, 16c: protrusion 17: mounting surface

20, 30: flat metal contact member 20a, 30a: post member

21, 31: contact portion 22, 32: U-shaped portion of the post member

23, 33: planar portion of the post member

The present invention relates to an electrical connector used to contact a terminal of a printed circuit board with a corresponding wire.

As shown in FIG. 5, a connector used to connect an electrical circuit of a printed circuit board with an external circuit composed of flat contact members 51 and 52 bent at approximately 90 degrees inside the housing 50 is conventional. . In such a connector, the groups of contact members 51 and 52 are arranged in a row, the lower shafts 51a and 52a of the contact members 51 and 52 protrude downward, and the protrusions 51a and 52a are printed circuits. The protruding pins 51a and 52a are plugged into a matching jack provided on the substrate 57 to make contact with the electrical terminals of the printed circuit board 57. Opposite ends of the contact members 51, 52 are bent at 90 ° in the housing 50 and project into recesses formed on the opposing surface 56 to be connected with the wire device terminals.

In this case, since the protruding pins 51a and 52a are required to be inserted into the jack of the printed circuit 57 at the same time, the demands regarding the position and the accuracy of the pitch of the protruding pins 51a and 52a are rather strict. For this reason, therefore, the housing has a bracing plate 53 with slots 54, 55 which determine the correct positioning of the protruding pins 51a, 52a. Such an arrangement provides accurate positioning of the protruding pins, but the need for separate manufacturing and assembly of the bracing plate 53 will increase manufacturing costs.

It is an object of the present invention to solve the above-mentioned problems and to provide an electrical connector which enables accurate positioning of the connecting member without the support plate.

It is therefore an object of the present invention to provide an electrical connector comprising a flat metal contact member located inside the housing and bent at 90 °, wherein one end of the contact member projects into a recess made in the housing for the mating device terminal, Has a form for connecting with a mating terminal, the other end of which extends 90 ° to a housing mounting surface that is substantially perpendicular to the mating surface including the reset, the tip of the contact member forming a contact point. Protrude through.

In the body of the housing, a post retaining plate having a U-shaped groove is provided, the post retaining plate being parallel to the mounting surface and open toward the joining surface, the inside of the U-shaped groove having a projection facing the recess of the groove. exist.

The edge of the post portion present inside the housing is bent in the opposite direction to the joining surface to form a portion having a U-shaped cross section. The part having a U-shaped cross section is inserted into the U-shaped groove and disposed in place by protrusions provided on both sides of the groove. A salient feature of such an arrangement is that it provides accurate positioning of the posts protruding through the mounting surface.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a three-dimensional view of the electrical connector according to the present invention, Figure 2 is a vertical cross-sectional view shown along the line A-A in the direction of the arrow. Both figures are used for explanation.

The connector consists of at least two contact members 20, 30 mounted in the housing 10, arranged in groups in a row, and the lower surface of the housing 10 facing the printed circuit board is a mounting surface 17. )to be. The surface substantially perpendicular to the mounting surface 17 is a mating surface 11 corresponding to the back side of the housing shown in FIG. 1. Settlements are provided on the mating surface 11, the number of which is equal to the number of contact members 20, 30, and in the mating surface 11 a housing recess for connection with a mating device terminal. 12a and 12b are provided.

Inside these housing recesses 12a, 12b have been positioned the ends 21, 31 of the contact members 20, 30 which form contact points 21, 31 designed to make contact with the mating device terminals. The contact members 20, 30 are provided with stabilizers 24, 34 located between the housing reset parts 12a and 13a. These stabilizers 24, 34 firmly fix the contact members 20, 30 to the housing 10.

The housing recesses 12a and 13a of the contact member are open toward the rear side 14 of the mating surface 11, and the contact members 20 and 30 are bent at 90 ° near the surface 14 and the post It protrudes through the mounting surface, such as members 20a and 30a. The portions of the post members 20a, 30a protruding through the mounting surface are pointed flat portions 23, 33, and the edges of the portions in the housing 10 are bent toward the rear face 14 to form a U-shaped portion 22 , 32).

In the vicinity of the mounting surface 17 there is a post retaining plate 15 parallel to the mounting surface 17 formed as a component of the housing 10, and the post retaining plate (of the contact members 20, 30). There are at least two U-shaped grooves 16 open toward the back of the mounting surface 17 (with a male-like opening), each U-shaped groove having a group of two projections 16a facing its recesses. , 16a and 16b, 16b). The portion with the U-shaped cross sections 22, 32 is therefore located in place by the U-shaped grooves 16, thus making it possible to accurately determine the position of the planar portions 23, 33 of the post.

The arrangement for arranging the portions having the U-shaped cross sections 32 and 33 in the U-shaped grooves 16 will be described in more detail in FIGS. 3 and 4. 3 shows a vertical cross section of the U-shaped groove 16 and a horizontal cross section of the post holding tube 15 formed in the center of the groove, and shows the post member of the contact member 20 into the U-shaped groove 16. 20a) is inserted. 4 shows the horizontal cross section of the post retainer tube 15 and the part having the U-shaped portion 22 of the post member inserted into the U-shaped groove 16.

The width of the U-shaped groove 16 is W. On both sides of the groove there are two projections 16a, 16a which face the inside of the groove and face each other. These protrusions 16a and 16a are used for the contact member 20, and the protrusions for the contact member 30 are located near the rear surface 14 (not shown) 16b and 16b. The distance between the tips of the protrusions 16a and 16a is W ₁ , where W ₁ is smaller than W ₂ . The width of the portion 22 having a U-shaped cross section of the shaft 20a inserted into the U-shaped groove 16 is W ₃ , where W ₁ <W ₃ <W ₂ . Because of this relationship, when the portion 22 having a U-shaped cross section is pressed into the U-shaped groove, the edges of the portion are pressed toward each other while passing between the protrusions 16a and 16a, but due to the elasticity of the metal This part is restored to its original width W ₃ after passing through the protrusion. After the force for pushing this part into the U-shaped groove passing through the projections 16a and 16a is removed, the cost member 20a of the contact member 20 bent at approximately 90 ° is pressed back toward the rear surface 14. Generates a restoring force (F). Therefore, as can be seen from FIG. 4, the portion 22 having the U-shaped cross section generates a restoring force F toward the right along the center line, but since both sides of the portion 22 having the U-shaped cross section are W ₃ &gt; W ₁ . Are both in contact with the protrusions 16a and 16a. This determines the position from left to right, as shown by arrow X on the figure. On the other hand, the two edges of the portion 22 having a U-shaped cross section generate forces F and F having diagonal directions at the points of contact with the protrusions 16a and 16a and are due to the balance of the opposite vertical components of these forces. Thus, the portion 22 having a U-shaped cross section is located at the center of the groove with respect to the direction Y. As shown in FIG.

Such an arrangement provides accurate placement of the post portions 20a, 30a of the contact members 20, 30 by protrusions 16a, 16a formed inside the U-shaped groove 16.

On the other hand, in an embodiment similar to that shown in FIG. 6, the positioning of the portion 22 having a U-shaped cross section is determined by the grooves 16c and 16c as well as by the protrusions 16a and 16a. In this case, the positioning is carried out at four contact points. Such an embodiment requires extremely high dimensional accuracy and elaboration in its assembly, and thus has no advantage over the embodiment according to the present invention.

As described above, the present invention has an axis retainer plate which is formed as part of a housing in which the electrical connector according to the present invention is located close to the mounting surface and is also parallel and has a plurality of U-shaped grooves, the grooves being inside the grooves. The shaft of the connecting member having a U-shaped cross section, the shaft of the connecting member having a U-shaped cross section is inserted into the U-shaped groove, and the spring restoring force generated by pressing the shaft edge against the protrusion Since it is fixed in position, no use of the bracing plate is thus required, accurate contact positioning is made, and assembly operation is facilitated.

Claims (1)

A plurality of nearly L-shaped contact members having a horizontal portion including a connection portion substantially parallel to the substrate surface to be attached and a vertical portion including a post member and a planar portion bent in the direction of the substrate surface are separated from each other in the insulating housing. In the retained electrical connector, the housing is connected between the rear surface and the mating surface, and the housing recess into which the respective horizontal portions of the contact member are inserted and the rear surface coupled to the substrate surface side of the housing corresponding to the housing recess. A post holding plate having a plurality of U-shaped grooves formed in the surface direction, each of the U-shaped grooves having a tapered surface and a projection having projections projecting toward each other at a predetermined position on the face side surface thereof; The post member of the member has a concave substantially U-shaped cross section in the back direction of the housing. And each of the contact members has the horizontal portion inserted into the housing recess, and both sides of the U-shaped cross-section of the post member are connected to the engaging portions of the protrusions in the U-shaped grooves of the post retaining plate. An electrical connector, characterized by being positioned with a spring back force.