JPH0637547Y2 - Switch operation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a knob mounting device for a communication device such as a radio receiver.

2. Description of the Related Art Generally, in a knob mounting device using a tact switch, a switch 12 is soldered to a printed wiring board 11 having a predetermined circuit as shown in FIG. The operation piece 13a of is arranged.

The tab 13 is fitted and locked to the cabinet 14 by a locking tab 13b formed integrally.

A spring 15 is arranged between the cabinet 14 and the knob 13 so that the knob 13 is always exposed on the surface of the cabinet 14. In this case, the spring 15 is slightly bent without being added to the knob 13, so that the knob 13 is always pushed upward. This is to prevent the knob 13 from resonating and to guarantee a constant knob stroke.

The problem to be solved by the invention is that such a knob mounting device is structurally difficult to use in a narrow space, and when the knob has a long side, the switch operates even if the end of the knob is pressed. It had the problem of not doing it.

The present invention solves the above-mentioned conventional problems, and an object thereof is to provide a switch operating device having a simple structure, good workability, and a switch that operates reliably even when the end of the knob is pressed. It is a thing.

Means for Solving the Problems In the present invention, an operating piece having an operating pin and a sliding piece on two sides are formed into a substantially L shape, and a spring is integrally formed between the sliding pieces. The member is slidably inserted into a guide rib provided on the cabinet. In this case, the tact switch is arranged at a position corresponding to the operation pin. The cabinet is provided with locking claws that are arranged at both ends of the knob so that the central portion of the knob having a long side shape contacts the operation piece of the movable member configured as described above and the knob is integrally formed. It is locked to the mating rib.

The switch operating device of the present invention is configured as described above so that the switch can be reliably operated even if the end portion of the knob having the long side shape is pushed.

Embodiment Hereinafter, a detailed description will be given based on the drawings showing an embodiment of the present invention, but the embodiment shows an example applied to a radio receiver. FIG. 1 is a partially cutaway perspective view of a switch operating device according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the relevant part.

In FIGS. 1 and 2, the movable member 1 is formed in the frame of a sliding piece 1a formed in a frame shape and an operation piece 1c and a sliding piece 1a formed in a so-called L shape bent at 90 ° with respect to the sliding piece 1a. It is composed of a substantially S-shaped spring member 1b and an operating pin 1d. The operation pin 1d is located substantially in the center of the operation piece 1c, and the tact switch 6 is arranged at a position corresponding to the tip of the operation pin 1d. The tact switch 6 is soldered to the printed wiring board 7 to form a predetermined circuit. The spring member 1b is formed integrally with the movable member 1, and one end thereof can move freely.

Such a movable member 1 is slidably inserted into the guide rib 5 formed in the cabinet 3. In this case, the spring member 1b
The free end of the abuts against a locking rib 8 formed on the cabinet 3.

The knob is arranged so that the central portion of the knob 2 having the long side shape contacts the operation piece 1c of the movable member 1 thus configured, and the locking claws 2a provided at both ends of the knob 2 are attached to the cabinet. It is locked to the provided fitting rib 4.

In the switch operating device configured as described above, when the knob 2 is pressed with a finger, the spring member 1b bends, and the tip of the operation pin 1d formed on the movable member 1 presses the tact switch 6, so that the finger pressing the knob 2 is pressed. When is released, the spring member 1b restores the original state.

Further, as shown in the schematic front view of FIG. 3, when the end portion of the knob 2 is pushed, the engaging claw 2a on the opposite side of the action point serves as a fulcrum to rotate the knob 2. In this case, since the knob 2 and the movable member 1 are separate pieces, the movement of the movable member 1 is brought into contact with the shoulder portion of the operation piece 1c on the side of the action point and the portion of the knob 2, so that the movable piece moves to the guide rib 5. The operation pin 1d has a structure for operating the tact switch 6 in order to move in parallel therewith.

As described above, according to the present invention, by arranging the movable member integrally formed with the spring member and the operation pin in the center of the knob having the locking claw, the end of the knob is pushed by the finger. In this case, since the movement in the vicinity of the point of action can be transmitted to the movable member through the end portion of the operation piece, the switch can be operated in a range where the knob stroke is smaller than that in the case where the movable member and the knob are integrally formed.

[Brief description of drawings]

1 is a partially cutaway perspective view of a switch operating device according to an embodiment of the present invention, FIG. 2 is a sectional view of the device, FIG. 3 is a schematic front view of the device, and FIG. 4 is a conventional switch. It is sectional drawing of an operating device. 1 ... Movable member, 1a ... Sliding piece, 1b ... Spring member, 1c ...
… Operating piece, 1d …… Operating pin, 2 …… Knob, 2a …… Locking claw, 3 …… Cabinet, 4 …… Mating rib, 5 …… Guide rib, 6 …… Tact switch, 8 …… Locking rib.

Claims (1)

[Scope of utility model registration request] 1. A rectangular parallelepiped knob in which locking claws are integrally formed at both ends of a knob, and the locking claws are locked to a rib provided on a cabinet, an operation piece having an operation pin, and a two-sided frame shape. And a sliding member formed in a substantially L shape, and a spring member is integrally formed between the sliding pieces, and a movable member, and the movable member are provided in a cabinet that is slidably held in a vertical direction. It has a guide rib and a tact switch arranged at a lower position corresponding to the operation pin, and is configured such that the operation piece of the movable member comes into contact with the central portion of the knob, and one end of the locking claw is arranged. A switch operating device characterized in that a rotary operation of a knob serving as a fulcrum is changed to a vertical operation of the movable member.