JPS5848746Y2 - switch - Google Patents

Description

[Detailed description of the invention] The present invention is useful for pushbutton operation, and the slider attached to the pushbutton is supported by the support part of the movable piece whose middle part is swingably supported by the fixed terminal. A switch of the type that swings the movable piece by passing the movable piece into contact with and separating from a fixed contact provided on another fixed terminal to open and close the contact, and particularly relates to an improvement in the fixing structure between the external connection terminal and the fixed terminal. It is something.

Conventionally, as shown in FIG. 1, in this type of switch, a trigger 2 is rotatably provided on a switch body 1, and an auxiliary lever 3 provided on the switch body 1 is rotated in conjunction with the trigger 2. By rotating the trigger 2 in the counterclockwise direction in FIG. 1 about the pin 4, the push button 5 is pushed down via the auxiliary lever 3.

Then, the movable piece 11 swingably supported on the common terminal 10 is swung by the slider 6 provided so as to protrude on both sides of the push button 5, thereby closing the contact and moving the trigger 2 to the trigger 2. By releasing the rotational force, the push button 5 is returned upward by the return spring 7, the movable piece 11 swings in the opposite direction to the above, and the contact opens and closes again, and the trigger 2 and the auxiliary lever 3 is designed to return to its original state.

By the way, in the above switch, for example, a large biasing force in the left direction is applied to the left common terminal 10 in FIG. 1 by the slider 6. Therefore, as shown in FIG. A protrusion 13 that is insert-molded in the main body 1 and protrudes from the lower end of the pusher 12 is connected to the common terminal 10.
The filler metal 12 and the common terminal 10 are integrated by inserting the metal into a hole provided in the hole and caulking, thereby creating a structure capable of withstanding the above-mentioned urging force.

However, in the above method, the filler metal 12 must be insert-molded into the switch body 1, which requires a large number of molding steps, and it may also be necessary to connect the external connection terminal (filler metal 12) and fixed terminal (common terminal 10 or normally open terminal). 14) requires the double effort of insert molding and caulking work, resulting in poor productivity and increased costs.

The present invention was devised in view of the above-mentioned drawbacks, and an object of the present invention is to provide a method that does not require an insert molding process, has good productivity, and is inexpensive.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings, which are examples of the present invention.

In FIGS. 3 and 4, reference numeral 20 denotes an external connection terminal in the form of an abbreviated plate, with a connection terminal portion 21 having a female screw 21a at one end, and a V-shaped groove 24 at the tip at the other end. The connecting portion 22 is provided with a protruding portion 23, and the protruding portion 23 is inserted or press-fitted into the through hole 8 provided in the side wall of the switch body 1.

In addition, 25 is a terminal screw which screws into the above-mentioned female screw 21a,
26 is a washer.

Reference numeral 27 denotes a common terminal having approximately the same shape as the conventional one (see Figs. 1 and 2), and the fixing plate portion 28 has the above-mentioned external connection terminal 20.
A hole 30 that fits into the protrusion 23 is provided, and a stepped portion 29 forming a support portion for swingably supporting the movable piece 11 is provided on the upper side that stands upright with respect to the fixed plate portion 28. There is.

Then, the external connection terminal 20 and the common terminal 27 are connected to the side wall of the switch body 1 by inserting the protrusion 23 of the external connection terminal 20 into the hole 30 and crimping the protrusion so as to push and spread the protrusion end to both sides. are sandwiched and electrically coupled.

Note that the components other than the external connection terminal 20 and the common terminal 27 are the same as those of the conventional device (see FIG. 1), so their explanation will be omitted.

The common terminal 27 is connected to the slider 6 of the push button 5.
For example, ゛, left direction in Figure 1, that is, arrow B in Figure 3.
Although a biasing force in the direction is applied, the connection portion 2 of the external connection terminal 20
2 extends in a direction perpendicular to the direction of arrow B, and the caulking direction of the protrusion 23 is perpendicular to the direction of arrow B, so there is no fear that the common terminal 27 will wobble due to the biasing force.

In the above embodiment, the common terminal 27 is shown as the fixed terminal, but it may be the normally open terminal 14 (see FIG. 1).

That is, when the normally open terminal 14 is closed, an impact force is applied to the left or right direction in FIG. Since they are orthogonal, there is no need to worry about the normally open terminal 14 wobbling.

In addition, the method of fastening the terminal screw 25 to the external connection terminal 20 is not limited to the method of directly providing the female screw 21 a on the external connection terminal 20 as in the above embodiment, but it is also possible to embed a hexagonal nut or the like in the switch body 1. , the external connection terminal 20 may be provided with a hole through which the terminal screw 25 is inserted.

As is clear from the above description, according to the present invention, the external connection terminal can be attached to the side wall of the switch body by a single crimping operation without forming the inserter 1 or the fixing plate of the fixed terminal. Since it can be fixed in a sandwiched state, productivity is good and manufacturing costs can be reduced.

Furthermore, since the crimp direction and the direction of the force applied to the fixed terminal are perpendicular to each other, sufficient fixing strength can be achieved even with one crimp as described above.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional front view of a conventional switch, Fig. 2 is a sectional view of a conventional terminal section taken along line A-A in Fig. 1, and Fig.
The figure is a sectional view of the terminal portion of the present invention taken along the line A--A in FIG. 1, and FIG. 4 is an exploded perspective view of the external connection terminal and the fixed terminal. 1... Switch body, 8... Hole, 14
・・・・・・Normally open terminal (fixed terminal), 20・・・・・・
External connection terminal, 21... Connection terminal section, 22...
...Connection part, 23...Protrusion part, 27...
...Common terminal (fixed terminal), 28...Fixed plate part, 29...Bearing part (step part), 30...
- Hole.

Claims (1)

[Scope of utility model registration request] When operating a pushbutton, the slider attached to the pushbutton is passed through the support portion of the movable piece whose middle portion is swingably supported by a fixed terminal, thereby causing the movable piece to swing. , in a switch of the type that opens and closes the contact by connecting and separating it from a fixed contact provided on another fixed terminal, one end is connected to the connecting terminal part,
The connecting part of the abbreviated external connection terminal with the other end as the connecting part is inserted or press-fitted into the switch through the through hole provided in the case body, and the tip protruding inside the case body is fixed to the above. A switch characterized in that the external connection terminal and the fixed terminal are integrally clamped and fixed to the switch body by inserting them into holes provided in a fixing plate section extending perpendicularly to the terminal supporting section and crimping them. .