JPS61294774A - Conduction metal - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a conductive metal fitting that establishes conduction between wiring on a printed wiring board and a chassis.

2. Description of the Related Art In a conventional conductive metal fitting, the conductive metal fitting 1 shown in FIG. It was being done.

Problems to be Solved by the Invention However, when attaching the conductive fitting 1 to the printed wiring board 2, it is difficult to eliminate the looseness of the fitting by simply fitting the conducting fitting leg 1a into the board hole 2a, as shown in FIG. It was very difficult to finish the dimensions, and there was some play in the fitting.As a result, there was a misalignment between the conductive metal hole 1b and the board hole 2b, so in order to fix the screw 4, the base of the conductive metal leg 1a was deformed. The conductive metal hole 1b and the substrate hole 2b must be aligned and fixed with screws 4, and the fixing work is unstable, making it difficult to mechanize.

Therefore, the present invention is intended to prevent the occurrence of displacement of the hole by simply fitting the conductive metal fitting into the hole of the printed wiring board without changing the size, thereby allowing stable screw fixing work.

Means for solving the problems and technical means of the present invention for solving the above problems are as follows:
A cylindrical protruding rib that fits into a printed wiring board hole and has a hole through which a screw can pass is provided on a part of the conductive metal fitting.

For production The effect of this means is as follows.

In other words, one end of the conductive metal fitting is closed! J/-) Soldering is fixed by penetrating the m-plate hole, while the printed wiring board is fitted with a cylindrical protruding rib that fits into the round hole, preventing it from moving laterally, and fixing it with screws. This makes it possible to perform screw fixing work without causing hole misalignment.

Embodiment Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings.

In FIG. 1, reference numeral 6 denotes a conductive metal fitting, at one end of which a conductive metal leg 5a is formed, and a leg dowel 6C is formed, and 5b is provided. It is fixed to the chassis 7 with screws 8 passing through the holes therein.

Figure 2 shows the conductive metal leg 6a and the board hole 6 of the printed wiring board.
It is a perspective view showing fitting with a. In addition, FIG. 3 shows the shape of the board hole and the shape of the conductive metal leg changed from that in FIG. 2, and the leg dowel of the conductive metal leg 5a is abolished, and the board of the printed wiring board 6 is changed to improve the fit with the board hole. The hole is made into a dogleg-shaped board hole 6C to secure three points of contact 9 with the conductive metal leg 6a, and the fitting is made using the deflection of the plate thickness of the conductive metal leg 6a.Other details are shown in Figure 2. It is similar to

In this way, the holes of the boards FL611 and 6C are large, and even if there is play and tilt due to fitting with the work leg dowel 6C etc. for inserting the conductive metal fitting, there are eight screws in some of the conductive metal fittings.

2 to the shiblint wiring board e by fitting the
The conductive metal fittings were moved because they were mated at several points.

No rotation occurs and the screw 8 can be fixed very easily.

Effects of the Invention The present invention has a cylindrical protruding rib formed on a part of the conductive metal fitting, and by fitting into the board hole, it is possible to prevent the occurrence of hole misalignment between the round hole of the board and the conductive metal fitting. It also has the following effects:

In other words, the present invention eliminates the need to correct hole misalignment, making screw fixing a stable operation and mechanizing it.

The insertion of the conductive metal fitting into the printed wiring board and the tightening of screws can be automated.In addition, press processing is easy because the hole shape is simply formed into a cylindrical protruding rib to attach to a part of the conductive metal fitting. The size can be the same or even smaller.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a fitted state of a conductive fitting according to an embodiment of the present invention, and FIG. 2 is a perspective view showing an operation of inserting a conductive fitting of the present invention.
FIGS. 3(a) and 3(b) are perspective views and top views showing the insertion work of the conductive fitting of another embodiment of the present invention in which the board hole is changed; FIG. FIG. 5 is a perspective view of a state in which hole misalignment occurs when inserting a conventional conductive fitting. 6... Conductive metal fitting, 6b... Cylindrical protruding rib, 6... Printed wiring board, 8...
・Screw, 7...Chassis, 6a...--Conducting gold common leg, 6a...Board hole, 6b Board round hole, 6
C: Dog-shaped hole on the board, 6C: Leg dowel. Name of agent: Patent attorney Toshio Nakao and 1 other person
1111 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] It has one end that is inserted into a hole provided in the printed wiring board and conductivity is achieved by soldering, and a cylindrical protruding rib that fits into the mounting hole provided in the printed wiring board, and it passes through the inside of the cylindrical protruding rib and the mounting hole at the same time. A conductive metal fitting that establishes conduction between the wiring of the printed wiring board and the chassis using the screws that fix the printed wiring board and the chassis that fixes the printed wiring board with the screws.