JPS6240538Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a socket with folded contact legs.

As shown in FIG. 1, a conventional socket of this type includes a socket housing 1 and a contact 2 incorporated in a contact chamber 1A of the socket housing 1, and the contact 2 is made of a single metal piece. The center part of the strip-shaped contact plate material is folded back to form a folded contact leg 2A, and both ends of this metal piece are expanded into a forked shape and bent to form a pair of spring contacts 2B. , the contact leg 2A was led out of the socket housing 1 from the through hole 3.

By the way, in the case of such a socket, the contact legs 2A are passed through the through holes of the printed circuit board 4, set on the printed circuit board 4, and then the contact legs 2A are inserted into the printed circuit board 4.
When soldering and connecting to a printed circuit board, flux rises from the seam 2C of the folded contact leg 2A by capillary action and adheres to the spring contact 2B in the contact chamber 1A, causing a contact failure. Ta.

The purpose of the present invention is to provide a socket with a structure that can reliably prevent flux from rising.The gist of this invention is to provide a socket with a structure that can reliably prevent flux from rising. A contact having spring contacts facing each other formed by expanding both ends of the contact plate material in a bifurcated shape in continuation with the shaped leg, and inserting the folded leg of the contact into the through hole of the socket housing. In the socket, a flux reservoir is provided at the base of the folded leg with plate surfaces of the contact plate forming the leg separated from each other, and the flux reservoir is connected to the socket. The through-hole of the housing is penetrated to project outside the outer wall surface of the socket housing, and on the outer wall surface from which the folded legs of the socket housing project, a flux is formed outside the outer wall surface from the flux reservoir. The present invention resides in a socket characterized in that it is provided with a highly protruding separating protrusion.

Embodiments of the present invention will be described in detail below with reference to the drawings. 2 to 5 show an embodiment of the socket according to the present invention, and parts corresponding to those in FIG. 1 are denoted by the same reference numerals. In the socket of this embodiment, a flux reservoir 6 is provided at the base of the folded leg 2A over a required length, and the plate surfaces forming the leg 2A are spaced apart from each other. The flux reservoir 6 passes through the through hole 3 of the socket housing 1 and is led out of the outer wall surface 1B of the socket housing 1. A spacing protrusion 7 is provided on the outer wall surface 1B of the socket housing 1 to separate the protruding portion of the flux reservoir 6 from contacting surrounding objects.

In such a socket, when the folded leg 2A is passed through the through hole 5 of the printed circuit board 4 and the tip of the separating protrusion 7 is brought into contact with the surface of the printed circuit board 4 as shown in FIG. Since the protruding part from the socket housing 1 is suspended in the air and does not come into contact with surrounding objects, the flux that rises up from the seam 2C at the tip of the folded leg 2A during soldering due to capillary action is trapped in the flux pool. 6
Once it reaches that point, it can no longer rise any further.

As explained above, the socket according to the present invention is
A flux reservoir is provided at the base of the folded leg, and the plate surfaces forming the leg are spaced apart from each other, and this flux reservoir is made to protrude outside the outer wall surface of the socket housing. Since the spacing protrusion is provided to separate the soldering material from contact with surrounding materials, even if folded legs are used, the presence of this flux reservoir can completely prevent flux from rising during soldering. Furthermore, since the separating protrusion is provided, even if the flux reservoir protrudes from the socket housing 1, the socket housing 1 can be stably supported by the printed circuit board.

[Brief explanation of the drawing]

Figure 1 is a vertical sectional view of the main parts of a conventional socket, Figure 2
3 and 3 are front and bottom views of an embodiment of the socket according to the present invention, FIG. 4 is a side view showing a part of FIG. 2 in longitudinal section, and FIG. 5 is a socket of the present embodiment. FIG. 3 is an enlarged longitudinal cross-sectional view extracting and showing a mounting state of the device on a printed circuit board. 1...Socket housing, 1A...Contact chamber, 1B...Outer wall surface, 2...Contact, 2A
...Folded leg, 2B...Spring contact, 3...Through hole, 4...Printed circuit board, 5...Through hole, 6...
Flux reservoir part, 7... Separation protrusion part.

Claims (1)

[Scope of utility model registration request] A folded leg formed by folding the center portion of a strip-shaped contact plate and overlapping each other, and mutually opposing springs formed by expanding both ends of the contact plate in a bifurcated shape and continuing to the folded leg. In the socket, the socket comprises a contact having a contact point, and the folded leg of the contact is led out to the outside from a through hole of the socket housing, wherein the base of the folded leg is provided with the contact plate material forming the leg. A flux reservoir portion is provided with the plate surfaces of the socket housing separated from each other, the flux reservoir portion is made to pass through the through hole of the socket housing and protrude outside the outer wall surface of the socket housing, and A socket characterized in that the outer wall surface from which the folded legs project is provided with a separating protrusion that protrudes higher than the flux reservoir outside the outer wall surface.