JPH0735422Y2 - Mounting device for electrical parts - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to an electrical component mounting apparatus for mounting electrical components on a metal plate.

2. Description of the Related Art As shown in FIGS. 5 and 6, a printed circuit board 1 has a conductive pattern and is mounted with electric parts to form a specific electric circuit.

With the screw 2, the L-shaped metal fitting 3 and the chassis 4 are opposed to each other, the electrical component 5 is sandwiched in the gap, and the electrical component 5 is fixed and adhered to the chassis 4 by tightening with a fixed tokdle.

The L-shaped metal fitting 3 holds the electric component 5 in a gap with the chassis 4, inserts the protrusion 3a of the first side into the hole 5a formed in the electric component 5, and protrudes the protrusion 3b of the second side. Is inserted into the hole 4a formed in the chassis 4 to determine the position where the electric component 5 is attached to the chassis 4.

The chassis 4 is a hole that holds the electrical component 5 with the L-shaped metal fitting 3 and fits into the protrusion 3b on the second side of the L-shaped metal fitting 3.
It has a hole 4b for screwing 4a and screw 2, and L-shaped metal fitting 3 and screw 2
Is to fix.

The electric component 5 has a lead wire 5b having specific electric characteristics and conductivity, and by mounting the lead wire 5b on the printed board 1, a specific electric circuit is configured on the printed board 1.

FIG. 6 shows a method of attaching the electric component 5 to the chassis 4. The chassis 4 shown in FIG. 6 has the structure shown in FIGS. 8A to 8C, and after the electric components 5 shown in FIGS. 9A to 9C are brought into close contact with each other, the chassis 4 is attached by the L-shaped metal fitting 3 shown in FIGS. And pinch. At this time, the protrusion 3a and the protrusion 3b of the L-shaped bracket 3 shown in FIG.
Are fitted into the holes 5a of the electric component 5 shown in FIG. 9 and the holes 4a of the chassis 4 shown in FIG. 8, respectively. Next, the screw 2 of FIG. 6 is passed through the hole 3c of the L-shaped bracket 3 of FIG. 7 and the hole 4b of the chassis 4 of FIG. Configure the mounting device.

Problems to be Solved by the Invention Regarding the thickness T of the electric component 5 shown in FIG. 9, even if it has characteristics of the same function, it is not the same if the manufacturer is different. Furthermore, as a matter of course, there are many different ones having different characteristics and different types. Therefore, the conventional L-shaped bracket 3 can be used to connect the electrical components 5 of different thicknesses to the chassis 4
If it is to be fixed to, the L-shaped metal fitting 3 needs to have the second side length processed according to the thickness. From this fact, there are many L-shaped metal fittings 3 having the same shape and different only in the length of the second side.
There is a problem in terms of management and cost that mounting of the electric component 5 and starting of the mold for the L-shaped metal fitting 3 are costly.

SUMMARY OF THE INVENTION It is an object of the present invention to eliminate the above-mentioned conventional drawbacks and to provide an electric component mounting apparatus that can be reliably assembled even when the thickness of an electric component changes.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention is configured such that the shape of the protruding portion at the tip of the second side of the L-shaped metal fitting is a step shape in which the width becomes narrower toward the tip. is there.

Operation The present invention has the above-described structure, and can make it possible to attach electric parts having different thicknesses to the chassis with one L-shaped metal fitting.

Embodiment FIG. 1 shows a side view of an electric component mounting device, and FIG.
an L-shaped metal fitting having a stepped tip at c, and FIGS.
The chassis and FIGS. 4A and 4B show two electrical parts having different thicknesses. Reference numeral 10 is a printed circuit board having a conductive pattern formed on one surface or both surfaces thereof, and a chassis 11 serving as a radiator is arranged on the printed circuit board 10. 3 a to c
As shown in FIG. 5, the upper part of the chassis 11 is provided with an engagement hole 11a into which a stepped projection 12a whose width becomes smaller toward the tip of the first side of the L-shaped metal fitting 12 is fitted, and the engagement hole 11a. A screw hole 11b into which the screw 13 is screwed is provided a little below 11a.
The L-shaped metal fitting 12 is formed by bending it into an L-shape so that the first side and the second side are orthogonal to each other as shown in FIGS.
The stepped protrusion 12a described above is provided at the tip of the first side, and the hemisphere that fits into the through hole 12b through which the screw 13 is inserted and the hole 14a of the electric component 14 attached to the chassis 11 at the second side. -Shaped protrusion 12c is provided. Further, a lead wire 14b is provided at the lower end of the electric component 14. This electrical component 1
The lead wire 14 of 4 is inserted into the printed board 10 and connected to the conductive pattern by the solder 15. When the electric component 14 having the thickness F shown in FIG. 4a is to be attached to the chassis 11, the engagement hole 11a of the chassis 11 is opened in the size of F and the L-shaped metal fitting 12 is formed.
The projecting portion 12a is fitted in the H-th step. At this time,
The gap between the L-shaped bracket 12 and the chassis 11 facing each other is defined by electrical parts.
The electric component 14 is attached to the chassis 11 with the L-shaped metal fitting 12 and the screw 13 as shown in FIG.

Next, the electric component 14 having the thickness E shown in FIG.
When it is intended to be attached to, the engaging hole 11a of the chassis 11 is made to have a size of E '. At this time, attach the L-shaped bracket 12 to the chassis.
When fitted to 11, the distance between the L-shaped metal fitting 12 and the chassis 11 which face each other is determined to be E, and the electric component 14 is formed in the shape shown in FIG.
Can be mounted on the chassis 11.

Effect of the Invention As described above, according to the present invention, several kinds of parts having different thicknesses can be attached to the chassis by one L-shaped metal fitting having an extremely simple shape, and the number of parts can be reduced. In addition, in the present invention, since the thickness of the electrical component to be attached by the L-shaped metal fitting is determined by the size of the engagement hole on the chassis side, an incorrect thickness can be obtained if the attachment device manages only the engagement hole of the chassis. It is possible to eliminate the need to install the electric parts of.

[Brief description of drawings]

FIG. 1 is a side view of an electronic component mounting apparatus according to an embodiment of the present invention, FIGS. 2a to 2c are top views, front views and side views of L-shaped metal fittings, and FIGS. 3a to 3c are top views of chassis. , Front view and side view, FIGS. 4a and 4b are side views of electronic parts, FIG. 5 is a side view of an electronic part mounting device of a conventional example, and FIG. 6 is a top view of a conventional example of an electric part mounting method. 7a to 7c are a top view, a front view and a side view of a conventional L-shaped bracket, FIGS. 8a to 8c are a top view, a front view and a side view of a chassis, and 9a to 9c are the same electrical drawings. It is the top view, front view, and side view of a component. 10 ... Printed circuit board, 11 ... Chassis, 11a ... Engagement hole, 11b ... Screw hole, 12 ... L-shaped metal fitting, 12a ... Projection part,
12b ... Through hole, 12c ... Projection, 13 ... Screw, 14 ... Electronic component, 14a ... Hole, 14b ... Lead wire.

Claims (1)

[Scope of utility model registration request] 1. A second side facing the inner surface of the chassis and holding an electric component between the chassis and the second side has a substantially L-shape, and a tip portion of the chassis engages with the chassis. An L-shaped metal fitting having a first side having a protrusion that fits into the dowel hole is provided, a protrusion that fits into the hole of the electric component is provided on the second side of the L-shaped metal fitting, and the first side of the L-shaped metal fitting is provided. 1. A mounting device for an electric component, in which the shape of the protrusion at the tip of the side of 1 is stepped so that the width becomes narrower toward the tip.