JPS624978Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention uses a plurality of sets of leaf switches to simultaneously switch between circuit terminals from a short-circuit state to a resistor inserted state for a plurality of circuits. Hereinafter, the present invention will be explained in detail with reference to the drawings.

In FIGS. 1 to 5, 1 is a circular leaf spring. 2 is a fixed contact unit, which includes a plurality of fixed contact plates 22 to which contacts 21 are fixed, and these contact plates 22.
A first insulating holder 2 made of plastic that holds the
Consists of 3.

Reference numeral 3 designates a movable contact unit, which includes the same number of movable contact plates 32 as the fixed contact plates 22 to which the contacts 31 are fixed, and a second plastic plate that holds these contact plates 32.
The insulating drive plate 35 is made of plastic, which holds the insulating holder 33 and these contact plates, and has a push button 35a and a protrusion 35b integrally formed approximately in the center thereof.
The contacts 21 and 31 have rectangular shapes and are arranged perpendicularly to each other. In the embodiment, the arrangement is in an X-shape, but a cross-shape may also be used. Further, the push button 35a is positioned such that its apex abuts approximately the center of the circular leaf spring 1.

4 is a spring that engages with the protrusion 35b to always bias the movable contact plate 32 toward the fixed contact plate 22 to keep the leaf switch in the on state, and provides elasticity to the movable contact plate 32 itself. It can be omitted by having it. 5 is a groove 51, a hole 52, and a recess 53 for housing the units 2, 3 and the spring 4.
and a protrusion 5 for fitting the hole 11 provided on the outer periphery of the circular leaf spring 1 to attach the circular leaf spring 1.
4. This is a switch case provided with a recess 55 and a recess 56 for inserting the resistor 6 on the back side.

The switch unit with resistance is switch case 5.
Attach the spring 4, the movable contact unit 3, the fixed contact unit 2, and the circular leaf spring 1 to the
It is assembled by connecting to the external terminals 24, 34 of.

When the circular plate spring 1 is pressed, the push button 35a is pushed down to separate the contacts 21 and 31, turning off the leaf switch and placing the resistor 6 between the external terminals 24 and 34.

This switch unit with a resistor is inserted into the circuit of, for example, a portable stereo audio device (tape recorder, etc.) with a headphone, and when the leaf switch is turned on, it outputs the audio of the audio device.
When the leaf switch is turned off and the resistor 6 is inserted, it can be used to reduce the volume of the sound so that other people can hear the sound. At that time, the resistor-equipped switch unit of the present invention is incorporated into an accessory, such as a tie pin, and is provided so that the circular plate spring 1 is on the front surface.

As explained above, in the present invention, the apex of the push button 35a is brought into contact with approximately the center of the circular plate spring 1, and this push button 35a is located approximately at the center of the insulated drive plate 35 that can simultaneously operate a plurality of movable contact plates 32. Since it is integrally molded, multiple leaf switches can be turned on and off at the same time, and even when incorporated into jewelry, it is easy to operate.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the resistor-equipped switch unit of the present invention, Fig. 2 is a side sectional view thereof, Fig. 3 is a plan view, Fig. 4 is a rear view, and Fig. 5 is an A in Fig. 2.
- It is a sectional view of the A line.

Claims (1)

[Scope of utility model registration request] In a switch unit with a resistor, a leaf switch is housed in a switch case, the lid is covered with a leaf spring of the same shape that operates a push button of the leaf switch, and a resistor connected in parallel with the leaf switch is disposed in a recess on the back side of the switch case. A switch unit with a resistance, characterized in that a plurality of sets of push buttons are provided, and the apex of a push button provided in the center of an operation plate for simultaneously operating the movable contact plates comes into contact with approximately the center of the circular plate spring.