JPH056563U - Switch device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a switch device in which generation of an operating noise of a plunger that is annoying is prevented. [Structure] An operation unit 1 pivotally supported so as to be swingable.
And the plunger 11 that is pressed by the operation unit 1.
An operation guide tube 9 of the plunger 11 in which a guide hole 10 through which the plunger 11 is inserted, a switch 13 operated by the plunger 11, and a spring 13 for returning the plunger 11 are provided. In the switch device, a silencing rib 20 is provided so as to project from an inner surface of the guide hole 10 or a side of the plunger 11 which is far from a pivotal support position of the operation portion 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a silencer structure of a switch device configured such that a plunger is operated by an operating portion and a switch is operated by the plunger.

[0002]

[Prior Art]

 FIG. 5 shows a conventional example of this type of switch device.

In the drawing, reference numeral 1 is an operating portion, and the operating portion 1 is pivotally supported by a mounting portion 3 of the operating portion 1 of a base body 2 and is swingable. A tactile body 4 is attached to the pivotal support portion of the operating section 1, and the lower end of the tactile body 4 contacts the tactile plate 5 so that the operating section 1 swings well. .. Reference numeral 6 denotes a coil spring, and the urging force of the coil spring 6 normally holds the operating portion 1 horizontally. A pair of plunger operating ends 8 are formed on the lower surface of the operating portion 1 so as to project therefrom. Plunger operation plan inner cylinders 9 are integrally formed at positions facing the plunger operation end 8 of the base body 2, and respective plungers 11 are mounted in guide holes 10 thereof. Reference numeral 12 denotes a circuit board, and a rubber sheet 14 having a rubber contact switch 13 pressed by the plunger 11 is laid on the circuit board 12. Reference numerals 15 and 16 denote an upper case and a lower case. The switch device is used by being housed in the case, and the operation unit 1 is located so as to be exposed from the opening of the upper case 15.

Then, in the above-mentioned configuration, when one side of the operating portion 1 is pushed, the operating portion 1 swings, and the plunger 11 that pushes down the operating end 8 on the pushed side pushes the corresponding rubber contact. The switch 13 is pressed. Next, when the pushing-down force of the operating portion 1 is released, the operating portion 1 is returned by the coil spring 6, the rubber contact switch 13 is returned by its own spring force, and the upper plunger 11 is also pushed up integrally.

FIG. 6 shows a state in which the plunger 11 is pushed down and the rubber contact switch 13 is pushed, and this figure shows the right side plunger 11 portion in FIG. When the operating part 1 is swung and the plunger 11 is pushed in by the operating end 8, the force exerted from the operating end 8 to the plunger 11 is not actually in the downward direction, but is slightly inclined along the swinging direction as indicated by the arrow. The plunger 11 is slightly inclined in the depressed state.

[0006]

[Problems to be solved by the device]

 Therefore, when the plunger 11 is returned upward from the position pushed into the inclined state by the spring force of the rubber contact switch 13, the side portion A of the plunger 11 is inevitably placed on the inner surface upper portion B on one side of the guide hole 10. There was a problem that the collision sound of the plunger 11 was very annoying in a quiet environment.

The collision of the plunger 11 with the inner surface of the guide hole 10 is caused by the clearance between the inner surface of the guide hole 10 and the plunger 11, but as described above, it is pushed into the inclined state. The clearance described above is absolutely necessary for the plunger 11 to move smoothly.

The present invention is made to solve the above problems, and an object of the present invention is to provide a switch device in which the operation noise of the plunger that is annoying is prevented from being generated.

[0009]

[Means for Solving the Problems]

 In order to achieve the above object, in the present invention, an operating portion pivotally supported so as to be swingable, a plunger pressed by the operating portion, and a guide hole through which the plunger is inserted are formed. In a switch device including a plunger actuation guide tube, a switch actuated by the plunger, and a spring that causes the plunger to return, a switch device that is far from the inner surface of the guide hole or the pivotal support position of the operation portion of the plunger. On the side, a muffing rib is provided so as to project.

[0010]

[Action]

 According to the above configuration, when the plunger is returned upward from the position pushed into the inclined state by the spring force, the inner surface of the guide hole or the noise reduction rib formed on the plunger comes into contact with the plunger or the inner surface of the guide hole. Direct collisions are avoided.

[0011]

【Example】

 FIG. 1 is a vertical sectional view of a plunger portion of a switch device of the present invention, and FIG. 2 is a plan view thereof.

Since the basic structure of the switch device is the same as that of the conventional example shown in FIG. 5, its description is omitted.

The plunger of FIG. 1 corresponds to the plunger on the right side of FIG. 5 in the same manner as that of the conventional example of FIG. 6, and from the axially supporting position of the operating portion 1 above the inner surface of the guide hole 10 of the operation guide cylinder 9. On the distant side, a muffling rib 20 for contacting the returning plunger 11 is continuously and integrally provided in the vertical direction.

With such a configuration, as shown in FIG. 3, when the plunger 11 is returned in the direction of the arrow from the position pushed by the restoring force of the rubber contact switch 13, the side portion A of the plunger 11 is for muffling. It is avoided that the ribs 20 come into contact with the ribs 20 and directly collide with the inner surface of the guide hole 10, thereby preventing generation of operating noise when the plunger 11 returns.

The protrusion distance and the protrusion length of the muffling rib 20 are designed so as not to interfere with the operation of the plunger 11 in the guide hole 10.

FIG. 4 shows another embodiment. In this embodiment, the muffling ribs that come into contact with the inner surface of the guide hole 10 when returning to the side far from the shaft supporting position of the operating portion 1 of each plunger 11 are shown. 20 is provided.

In the above embodiment, the spring force for returning the plunger 11 is obtained by the rubber contact switch 13. However, a separate spring body may be used.

[0018]

[Effect of the device]

 According to this invention, when the plunger is returned upward from the position pushed into the inclined state by the spring force, the silencer rib formed on the inner surface of the guide hole or the plunger contacts the inner surface of the plunger or the guide hole. Direct collision is avoided, which prevents the generation of operating noise due to a collision when the plunger is returned.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a plunger portion of the present invention.

FIG. 2 is a plan view of the plunger portion of the present invention.

FIG. 3 is a vertical sectional view of the device when the plunger is pushed in.

FIG. 4 is a vertical sectional view of a plunger portion according to another embodiment of the present invention.

FIG. 5 is a vertical cross-sectional view of a conventional switch device.

FIG. 6 is a vertical cross-sectional view of a conventional example when a plunger is pushed in.

[Explanation of symbols]

 1 Operation part 9 Plunger operation guide tube 10 Guide hole 11 Plunger 13 Rubber contact switch 20 Rib for noise reduction

Claims (1)

[Claims for utility model registration] [Claim 1] An operating part (1) pivotally supported so as to be swingable, a plunger (11) pressed by the operating part (1), and the plunger (1). 11) An operation guide tube (9) of a plunger (11) having a guide hole (10) inserted therethrough, a switch (13) operated by the plunger (11), and a return of the plunger (11). A switch device comprising a spring (13) to be operated, the inner surface of the guide hole (10) or the plunger (1).
A switch device characterized in that a sound deadening rib (20) is provided so as to project from a side farther from a shaft supporting position of the operation section (1) in (1).