JPS596445B2 - switch device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a switch device in which opening/closing operations of contacts are performed by swinging opening/closing contacts by operating a swinging bundle.

Conventionally, there is a switch device of this type as shown in FIGS. 1 and 2.

To explain this, 1 is the switch body, 2 is a no-dle that is swingably attached to the switch body 1, 3 is a contact, 4 is a terminal, 5 is an opening/closing contact, and 6 is this opening/closing contact 5. A fulcrum terminal plate that supports swinging freely,
7 is a coiled spring inserted between the handle 1 and the opening/closing contact 5, 8 is a protruding receiver for receiving the spring 7, and is used to swing the handle 2. When operated, the opening/closing contactor 5 is reversely operated by the spring 7 to open/close the contact.

However, according to such a switch device, as shown in detail in FIG. 2, the end of the spring 7 is cut off at the portion of the spring 7 that comes into contact with the opening/closing contact 5, that is, the portion corresponding to the bottom surface of the spring 7. Since the spring 7 remains in the same position, an angle θ is formed between the end and the adjacent spring, and this angle θ becomes the free play of the spring 7.

According to FIG. 2, since the spring 7 is bent in a dogleg shape, the angle θ is even larger than the angle θ when the spring 7 is in a straight state. .

At this time, the vertical load acting on the spring 7 is:
The force acts in the direction of pushing the contact 3 through the movable contact of the opening/closing contact 5.

Next, when the bundle 2 is reversed from the state shown in FIG. Since two movements occur as a phenomenon: one movement in which the knob 2 is reversed together with the swinging body 5, a two-step falling movement occurs at the beginning of the operation.

The angle δ in FIG. 1 is the play of the bundle 2, that is, the angle at which the end of the spring 7 touches the adjacent spring.

Therefore, an object of the present invention is to provide a new switch device that eliminates such drawbacks.

Hereinafter, one embodiment of the present invention will be described with reference to FIG. 3 and subsequent figures, but the explanation of the same parts as the conventional device shown in FIGS. 1 and 2 will be omitted.

Reference numeral 9 denotes an extension extending in the longitudinal direction of the lower end of the spring 1; 10 an insertion part formed at the bottom of the opening/closing contact 5 and having a convex shape so that the extension 9 is inserted therein; 11;
is a concave contact plate for receiving the insertion part 10, and the spring 7 has its upper end received by the receiving part 8 on the bundle 2, and its lower end positioned by the insertion part 10. It has become.

In such a configuration, when the bundle 2 is oscillated, there is no play angle θ as in the conventional case, so the bundle operation pressure with respect to the bundle stroke is 2 as shown in FIG.
This is a characteristic that does not exhibit step-drop operation.

In the embodiment of the present invention described above, the contact plate 11 has a concave shape, but it is of course possible to have a V-shape as shown in FIG. 6 or other various shapes. .

Therefore, according to the present invention described above, since there is no play in the bundle, the operating feel is smooth, and a novel switch device that eliminates the drawbacks of the conventional switch device can be obtained.

Further, the present invention has the effect that the assembly work is facilitated because there is no need to consider the end position of the spring at all during assembly.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a conventional switch device, FIG. 2 is a cross-sectional view of the main part thereof, FIG. 3 is a cross-sectional view of the main part of a switch device according to an embodiment of the present invention, and FIG. A perspective view of a spring in one embodiment, FIG. 5 is a characteristic diagram of bundle stroke versus bundle operating pressure in one embodiment of the present invention, and FIG. 6 is a main part of a switch device showing another embodiment of the present invention. FIG. 2...Bundle, 5...Opening/closing contact,
7...Suf'' IJ tongue 9...Extension part, 10...Insertion part.

Claims (1)

[Claims] 1. A spring inserted between a nozzle that is swingably attached to the switch body and an open/close contact that is swingably supported, and extending in the longitudinal direction of the spring at the end that comes into contact with the open/close contact. An extension part is formed, an insertion part is formed for inserting the extension part into the opening/closing contact, and the opening/closing contact is supported by the switch body by the insertion part. switch device.