JPS5936939Y2 - Electrical component mounting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an electrical component mounting device that allows electrical components such as switches to be mounted on a mounting plate simply by inserting them into mounting holes in the mounting plate.

This type of electrical component mounting device is generally provided in a case, and when inserted into the mounting hole of the mounting plate, the shoulder is pushed by the circumferential surface of the mounting hole and bends inward to engage with the lower surface of the periphery of the mounting hole. and a flange provided near the upper edge of the case and engaged with the top surface of the periphery of the mounting hole; It is clamped and installed.

In the prior art, these elastic stop pieces are provided parallel to opposite side walls of the case and their cross section is usually rectangular.

However, in the mounting device having this structure, the elastic stopper piece has a small moment of inertia and is easily bent, so the electrical component tends to move horizontally within the mounting hole, resulting in low reliability in fixing the electrical component.

SUMMARY OF THE INVENTION An object of the present invention is to propose an electrical component mounting device that allows electrical components to be securely mounted in mounting holes.

The embodiments of the present invention will be described in detail with reference to the drawings.
2 and 2 show an electrical component mounting apparatus 10 according to the present invention, and in the illustrated embodiment, the electrical component 12 is shown to be a pushbutton switch, but other electrical components may be used.

The electrical component 12 has a substantially rectangular cylindrical case 14, and component elements are housed within this case.

The mounting plate 16 to which this electrical component is to be mounted has a rectangular mounting hole 18 corresponding to the cross section of the case 14.

In the illustrated embodiment, the electrical component 12 has two opposing elastic stopper pieces 20.20', which have a shoulder 21. 21' on the outer surface.

The resilient stopper pieces 20.20' are provided at opposite corners of the case 14, as shown, and the case 14 is cut away at these corners to allow deflection of the resilient stopper pieces 20.20'. It has a notch 22.22'.

As can be seen in FIG.
It has mutually perpendicular wall surfaces 20a, 2ob and 20'a, 20'b that engage with the walls 18C, 18d, respectively, and has a triangular cross section.

The electrical component 12 also has a mounting hole 1 near the upper edge of the case 14.
It has a flange 24 that engages with the upper surface of the periphery of 8.

As shown in FIGS. 3A and 3B, this electrical component 12 is mounted by being inserted into the mounting hole 18 of the mounting plate 16 from above from the end (bottom) side opposite to the side having the flange 24.

In this way, the two elastic stopper pieces 20, 20'
is pushed by the wall surface of the mounting hole 18 and bends inward, and the shoulder portion 21.
21' passes through the mounting hole 18 and is released, the elastic stopper ice 20.2 (1) is returned by the spring restoring force so that these shoulders 21.21' engage the lower peripheral surface of the mounting hole 18. Therefore, the electrical component 12 is connected to the elastic stopper piece 20.2.
It is sandwiched and fixed by the shoulder portion 21, 21' of 0' and the flange 24.

4A and 4B show cross sections of the elastic stopper piece of the prior art and the elastic stopper piece used in the present invention.

If the cross-sectional area of the conventional elastic stopper piece is aX3a=3a2, and the cross-sectional area of the elastic stopper piece used in the present invention is equal to the conventional case (JτT)2/2)-3a2, then in the conventional technology, the cross-sectional area is quadratic. The moment is πx3ax
In contrast, in the present invention, the moment of inertia of area in the X direction and y direction in FIG. 5 is a4, and the moment of inertia of area in the U direction is 2a4.

Therefore, it can be seen that the mounting device of the present invention has greater strength against bending in all directions than the prior art, the electrical components are firmly fixed, and there is no horizontal movement.

According to the present invention, as described above, there is a practical advantage that electrical components can be mounted more firmly than in the past.

[Brief explanation of drawings]

1 and 2 are perspective views of the electrical component mounting device according to the present invention in an exploded state and an assembled state, FIGS. 3A and 3B are side views showing a state in which an electrical component is inserted into a mounting plate, and FIG. Figure A,
B is a cross-sectional view of the elastic stopper piece according to the prior art and the present invention, and FIG. 5 is a cross-sectional view showing the direction of the second moment of the elastic stopper piece according to the present invention. 10...Mounting device, 12...Electrical component, 14...Case, 16...Mounting plate,
18...Mounting plate, 18a to 18d...
...Wall surface, 20.20'...Elastic stopper piece,
20a, 20b, 20'a, 20'b...
Wall surface, 21.21'...Shoulder, 24...
・Flange.

Claims (1)

[Scope of utility model registration request] A plurality of elastic stopper pieces are provided in the case of an electrical component having a substantially rectangular cylindrical case and each have a shoulder portion that engages with a lower peripheral surface of a corresponding mounting hole of a mounting plate; In the electrical component mounting device, the plurality of elastic stopper pieces are provided at opposite corners of the case and engage the wall surface adjacent to the corner of the mounting hole. An electrical component mounting device characterized by having mutually orthogonal wall surfaces that meet.