JPH07169523A - Connector - Google Patents

Abstract

PURPOSE:To give high sandwiching force and spring bearing force in spite of a small type in a connector composed of a male connector having a connector pin and a femal connector having a connector socket to sandwich the connector pin between it. CONSTITUTION:An embossed part 10 extending over to the fixing end 6 from the vicinity of a contact part 4 is molded on a beam 5 being a leaf spring- shaped member of a connector socket 2a. The depth D2 of this embossed part 10 is made to be the largest in the vicinity of the fixing end 6, and the depth D1 is made to gradually decrease as one moves toward the contact part 4 or the fixing end 6. Thereby, the geometrical moment of inertia in the vicinity of the fixing end of the beam 5 is increased, and spring strength is attained. In the fixing end 6 or the contact part 4, the geometrical moment of inertia is reduced as one moves toward the contact part 4, and the stress concentration is avoided by dispersing it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for making electrical connection, and more particularly to a connector which is small in size and has a high density, and which reliably holds a connector pin by a high holding force.

[0002]

2. Description of the Related Art Conventionally, the pinching force of a connector pin in this type of small connector is caused by the shape and material of the beam of the connector locator, the thickness of the connector pin to be inserted, and the contact portion gap amount facing the contact portion. It is determined by the displacement amount of. A connector using such a connector socket will be described.

FIG. 5 is a perspective view showing a fitting state of a connector in a conventional example, FIG. 6 is a perspective view of a connector housing a connector socket in the set of connectors shown in FIG. 5, and FIG. It is a perspective view which shows the connector socket of No. 6. Normally, a connector, as shown in FIG. 5, a male connector including a rod-shaped connector pin 9 and a housing 1b for fixing the connector pin 9, and a connector socket 2b and a connector socket for sandwiching the connector pin 9 to achieve an electrical connection. It is composed of a pair of female connectors composed of a housing 1a for fixing 2b.

Of these, the female connector for accommodating the connector socket 2b of FIG. 6 has a first insertion opening 3a and a connector pin (not shown) for press-fitting and fixing the connector socket 2b into a housing 1a molded of synthetic resin as a seed. ) Are inserted in a plurality of second insertion ports 3b. And
The connector socket 2 as shown in FIG.
b is press-fitted and fixed to form a connector.

The connector socket 2b is inserted into a through hole (not shown) of the printed board and soldered to the terminal 7.
Extends and the terminal joint portion 8 is formed at one end thereof. The beam 5 faces the terminal joint portion 8 via the fixed end 6 and extends forward (in the connector pin insertion direction), and the contact portion 4 is formed at the tip thereof.

Further, the contact portion 4 is arranged at a position at the tip of the beam 5 facing each other in order to improve the contact reliability, and is a two-point contact which sandwiches the inserted connector pin 9 of FIG. 5 from both sides. Then, at the same time when the pair of male connector and female connector are fitted, the connector pin 9 is inserted into the connector socket 2a, and the contact portion 4 comes into contact with the connector pin 9 to achieve electrical connection. At this time, the contact portion 4 surely clamps the connector pin 9 from both sides by the force for pinching the connector pin, that is, the pinching force, and the reaction force thereof is transmitted to the fixed end 6 via the beam 5 as stress. It was

[0007]

As described above, in the conventional connector, the clamping force of the contact portion, which particularly fulfills its function, needs to be increased in order to enhance its reliability. On the other hand, when the clamping force increases, the stress applied to the fixed end also increases. Therefore, in order to increase the clamping force, the beam width was widened or the plate thickness was increased to deal with it.For the overstress caused by the reaction force of the clamping force, the beam width near the fixed end was adjusted. Widespread and hard materials were used to withstand overstress. But,
All of these measures are against the demand for miniaturization and high density of the connector, and it is difficult to process even if the material is hard, and for example, a small bending radius cannot be achieved by bending and a large bending radius is required. It becomes a big thing. Harder materials are susceptible to repeated stress and often lose their gripping force.

It is an object of the present invention to provide a connector which is small in size while using a conventional material, yet achieves a high clamping force and has sufficient proof strength against the applied stress.

[0009]

The features of the present invention include a male connector having a first insulating housing in which a plurality of connector pins are arranged vertically and horizontally, a contact portion for sandwiching and holding the corresponding connector pin, and this contact portion. And a male connector having a second insulating housing for embedding a connector socket having a leaf spring member extending to a fixed portion at the rear end, and a cross-sectional shape of the leaf spring member near the fixed portion. Is formed into a spring strength improving shape that increases the second moment of area, and the degree of deformation of the spring strength improving shape is gradually changed from the vicinity of the fixed portion to the contact portion or the fixed portion. It is a connector that is molded to be small.

[0010]

When the embossing is provided on the beam of the connector socket, the cross-sectional area of that portion is the same before and after forming the embossed portion or the convex portion, but the second moment of area becomes large and the rigidity of the spring is increased. Can be improved.

In the present invention, the embossing is linearly extended, and the depth from the embossing near the contact portion to the embossing near the fixed end is gently changed. Therefore, the stress applied to the fixed end contact portion can be dispersed without being concentrated while the spring rigidity is improved and the clamping force is increased.

[0012]

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

FIG. 1 is a perspective view of a connector according to a first embodiment of the present invention, FIGS. 2 (a) to 2 (c) are perspective views of a single unit of the connector socket of FIG. 1, and AA and BB sectional views. Is. As shown in FIG. 1, this connector has exactly the same structure as the conventional connector, but there is a difference in the connector socket 2a used. That is, FIG.
As shown in FIG. 2, the connector socket 2a has a terminal joint portion 8 integrally provided on one side of one end of two beams 5 facing each other as in the conventional example, and is further soldered to a printed board from there. The terminal 7 is extended. A contact portion 4 is provided on the other side of the beam 5, and the contact portion 4 widens the tip of the connector socket 2a to facilitate insertion of the connector pin so that the connector pin can be held. . A point different from the conventional example is that an embossed portion 10 linearly extending from the contact portion 4 toward the fixed end 6 is formed on the beam 5.

The depth of the embossed portion 10 changes along the direction in which the beam 5 extends, as shown in the sectional view of FIG. Specifically, the depth D1 is not so deep in the portion where the emboss 5 starts near the contact portion and the portion reaching the fixed end 6, and conversely, the protruding height is low on the back surface side. Further, the depth D2 becomes deeper from the contact portion 4 toward the fixed end 6, and becomes the maximum depth at the fixed end 6. Then, it becomes shallower from there, and the embossed portion 1 is formed at the terminal joint portion 8.
0 is gone.

When the embossed portion 10 is molded as shown in FIG. 2 (b), the second moment of area is larger than that before the embossed portion is molded, thereby improving the spring strength. This is also clear from the point of view of material mechanics that a section with an “e” shape like a railroad track has a larger section modulus and is hard to bend than a rod with a rectangular section. Further, in the first embodiment, the embossing depth is gradually changed to prevent the concentration of stress between the non-embossing portion and the boundary where the embossing starts.

3A and 3B are a perspective view and a CC sectional view of a connector socket in a second embodiment of the connector of the present invention. The connector socket in this connector achieves this by forming coining ridges 11 by coining, whereas the first embodiment described above used embossing to change the moment of inertia of the beam 5. ing. That is, the coining convex portion 11 extending linearly from the vicinity of the contact portion 4 by coining processing extends to the fixed end 6 on the surface into which the connector pin of the beam 4 is inserted or the rear surface side thereof. Here, the cross-sectional area including the coining convex portion 11 and the cross-sectional area before forming are the same, and only the second moment of area is increased. Also,
In this embodiment, the coining protrusion 1 is similar to the above-mentioned embodiments.
The height of 1 is gradually increased, and is highest at the fixed end 6. Although not shown in the drawing, the same effect can be obtained by providing a recess by coining without changing the cross-sectional area.

FIG. 4 is a perspective view of a connector socket in a third embodiment of the connector of the present invention, a partial plan view of a beam, and a DD sectional view.

In the connector socket of this connector, as shown in FIG. 4, a groove-like embossed portion 12 having a narrow width is formed by coining on the connector pin surface on the beam 5. The longest groove located at the center of the beam 4 is formed by these groove-shaped embossed portions 12, and the groove-shaped embossed portion 12 is gradually shortened in the periphery thereof.
Are formed in plural. Each of the groove-shaped embossed portions 12 formed on the beam 5 is not so large in width and depth, but a plurality of them are formed side by side, so that a large second moment can be obtained. Since the groove-shaped embossed portion is long in the center and the length of the groove-shaped embossed portion 12 around the groove-shaped embossed portion is gradually shortened, the spring stiffness is weakened in the portion extending from the fixed portion 6 to the terminal joint portion 8 and the contact portion 4 to make contact. The stress is dispersed in the portion 4 and the terminal joint portion 8 and the strength is increased as the fixed end 6 is approached.

[0019]

As described above, according to the present invention, the gripping force can be improved by making the sectional shape near the fixed end of the leaf spring member having the contact portion for sandwiching the connector pin into a shape that increases the second moment of area. It is possible to improve the spring yield strength by reducing the shape deformation degree so that the second moment of area becomes gradually smaller toward the contact part or the fixed end and distributing the stress without concentrating it at the fixed end. It has the effect of

[Brief description of drawings]

FIG. 1 is a perspective view of a connector according to a first embodiment of the present invention.

2 is a perspective view, an AA sectional view, and a BB sectional view of a single body of the connector socket of FIG. 1. FIG.

FIG. 3 is a perspective view and a CC sectional view of a connector socket in a second embodiment of the connector of the present invention.

FIG. 4 is a perspective view, a partial plan view and a DD sectional view of a connector socket according to a third embodiment of the connector of the present invention.

FIG. 5 is a perspective view of a conventional connector.

FIG. 6 is a perspective view of the connector of the connector of FIG. 5 in which a connector socket is housed.

FIG. 7 is a perspective view showing the connector socket of FIG.

[Explanation of symbols]

 1a, 1b Housing 2a, 2b Connector socket 3a First insertion port 3b Second insertion port 4 Contact part 5 Beam 6 Fixed end 7 Terminal 8 Terminal connection part 9 Connector pin 10 Embossing part 11 Coining part 12 Groove embossing part

Claims (4)

[Claims] 1. A first connector comprising a plurality of connector pins arranged vertically and horizontally.
Second insulation for embedding a connector socket having a male connector provided with an insulating housing, a contact portion for sandwiching and holding the corresponding connector pin, and a leaf spring member connected to the contact portion and extending to a fixed portion at a rear end. In a connector configured with a male connector having a housing, the leaf spring-like member near the fixed portion has a spring strength improving shape for increasing a moment of inertia of a cross section, and the contact portion or the fixed portion is provided near the fixed portion. A connector, wherein the cross-sectional shape of the leaf spring-like member is formed so that the degree of deformation of the spring strength improving shape gradually decreases as it goes upward. 2. The connector according to claim 1, wherein the spring strength improving shape is an embossed shape having a convex portion on one surface and a concave portion on the opposite surface. 3. The connector according to claim 1, wherein the spring strength improving shape is a T-shape or a U-shape having a convex portion or a concave portion on one surface. 4. The spring strength improving shape is a shape in which at least three embossed shapes, one surface of which is a convex portion and the other surface of which is a concave portion, are connected, and the embossed portion at the center of these embossed portions is the longest. The connector according to claim 1, wherein the length of the remaining embossed portion is gradually reduced toward the periphery.