JPH0927246A - Structure for preventing backlash of slide control knob - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a slide control knob from being vibrated by loudspeaker sounds or by the vibration of a vibrator motor and causing rattling noises by preventing the backlash of the slide control knob. SOLUTION: When a slide control knob 1 having an elastic hook portion 11 is inserted into a guide groove 23 in a case 2 with a relatively simple force and mounted in place, the elastic hook portion 11 is projected to the outside from a window-shaped guide groove 24 in the case 2. Thus the elastic hook portion 11 is pressed against the planar part 21 of the case 2 and deflected because of its elastic force so that a certain force is constantly applied to the slide control knob 1, with the result that the backlash of the slide control knob can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for preventing rattling of a slide knob of an electronic apparatus having a knob (hereinafter referred to as a slide knob) for performing a slide operation for controlling a power source, and more particularly to a speaker sound and a vibrator motor. The present invention relates to a structure for preventing the slide knob from vibrating due to the vibration of the vehicle and generating an abnormal noise.

[0002]

2. Description of the Related Art Heretofore, this type of slide knob rattling prevention structure has been designed for the purpose of rattling the knob and stability of the slide, as disclosed in, for example, Japanese Utility Model Laid-Open No. 63-199432. is there. FIG. 4 is an exploded perspective view showing a first example of the conventional knob rattle prevention structure.
By providing the elastic member 41 on the slide knob 4 and inserting the slide knob 4 into the guide groove 51 of the case 5 to bend the elastic member 41, the slide knob 4 smoothly moves inside the case 5 without rattling. You can slide.

Further, as disclosed in, for example, Japanese Utility Model Laid-Open No. 3-39223, there is one for the purpose of preventing rattling of a knob. FIG. 5 is an exploded perspective view showing a second example of this conventional knob rattle prevention structure. A plate spring 9 for preventing rattling is provided between the base portion 61 of the slide knob 6 and the guide 8 and the slide knob 6 is elastically supported, so that the slide knob 6 does not rattle and the case 7 smoothly. Can slide on.

[0004]

In the conventional structure for preventing the rattling of the slide knob described above, it is necessary to keep the slide knob and slide like a mobile phone or a card type electronic device, while it is required to be light, thin and short. If you do not have enough space to provide a guide groove, etc.,
Further, it is not suitable when it is necessary to reduce the number of parts as much as possible in order to reduce the cost. Further, there is a problem that the elastic member for preventing rattling comes off from the case relatively easily.

An object of the present invention is to solve the above-mentioned conventional problems,
While preventing rattling of the slide knob,
It is to provide a structure for preventing the rattling of the slide knob that requires a small space and does not easily come off from the case.

[0006]

According to the present invention, there is provided a slide knob including a slide knob, a guide groove provided in a case into which the slide knob is slidably inserted, and a slide switch main body engaging with the slide knob. In the rattling prevention structure, an elastic hook portion is provided on the slide knob, and when the slide knob is inserted and attached to the guide groove of the case, the elastic hook portion is connected to the guide groove to open a window. The slide knob is attached to the guide groove of the case while receiving a constant force by the elastic biasing force of the protruding elastic hook portion. The slide knob is made of a resin material.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

1 and 2 are an exploded perspective view and an assembled plan view showing an embodiment of the present invention.

A slide knob 1 made entirely of a resin material
The engaging portion 12 that engages with the switch switching portion 32 of the slide switch body 31 and the elastic hook portion 11 that extends from one end of the engaging portion 12 substantially parallel to the slide operating portion 13 are formed on the A slide guide shaft portion 14 is provided between the portion 13 and the portion 13. In the case 2 into which the slide knob 1 is inserted, the slide guide shaft portion 14 is provided with a window-like guide groove 24 in which the slide operation is possible and the window-like guide groove 24 is provided so as to be connected to the slide operation portion 13. A guide groove 23 is formed, and a plane portion 21 is formed on the same surface as the opening surface of the window-shaped guide groove 24.

Next, referring to FIG. 2, the assembling situation and operation of this embodiment will be described. The elastic hook portion 11
While protruding the window guide groove 24, slide knob 1
When the elastic hook portion 11 of the slide knob 1 is set so as to be in contact with the flat surface portion 21 of the case 2 by the elastic biasing force when the slide knob 1 is attached to the guide groove 23 of the case 2, It is fixed in the guide groove 23 while always applying a force in a fixed direction, and rattling is prevented. Even if the slide knob 1 moves in the guide groove 23 for switching the switch, the elastic hook portion 11 is always bent by the flat portion 21. If the abutting surfaces of the flat surface portion 21 and the elastic hook portion 11 are finished to have gloss or the like, the resistance against the sliding operation can be almost eliminated.

Referring now to FIG. 3, the slide knob 1
A description will be given of a structure in which the slide knob 1 does not easily come off from the case 2 after being attached to the case 2. FIG. 3 is a sectional view taken along line AA of FIG.

The thickness a of the engaging portion 12 of the slide knob 1 and the thickness b of the slide guide shaft portion 14 and the case 2
Height c of the window-shaped guide groove 24 and the elastic hook portion 1
The thickness dimension d of 1 is set as c> b ≧ a ≧ d, and the step dimension e for preventing the slide knob 1 from coming off the case 2 is set to the minimum.
With such dimensions, the elastic hook portion 11 and the engaging portion 12 of the slide knob 1 can be inserted into the window-shaped guide groove 24 of the case 2, and the insertion resistance generated due to the step size e is the resin. The slide guide shaft portion 14 made of a material is absorbed by being instantly deformed by its own elastic force,
The slide knob 1 can be attached to the case 2.
In this way, the slide knob 1 inserted in the case 2 is in a state where it cannot be easily removed from the case 2.

[0013]

As described above, according to the slide knob rattling prevention structure of the present invention, an elastic hook portion is formed in the slide knob and is inserted into the groove of the case. The structure fixed to the case has an effect of preventing rattling of the slide knob, and preventing the slide knob from vibrating and generating abnormal noise due to speaker sound or vibration of the vibrator motor.

Further, it is not necessary to add new parts other than the slide knob, and the number of parts can be reduced. Further, the slide knob does not easily come off from the case, and the structure is compact and can be installed in a small space.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a plan view showing an embodiment of the present invention.

FIG. 3 is a sectional view taken along line AA in FIG. 2;

FIG. 4 is a first example of a conventional slide knob rattling prevention structure.
It is an exploded perspective view which shows the example of.

[Fig. 5] Second conventional slide knob rattling prevention structure
It is an exploded perspective view which shows the example of.

[Explanation of symbols]

 1, 4, 6 Slide knob 11 Elastic hook portion 12 Engagement portion 13 Sliding operation portion 14 Slide guide shaft portion 2, 5, 7 Case 21 Flat portion 23 Guide groove 24 Window-shaped guide groove 3 Slide switch 31 Slide switch body 32 switch Switching part 8 Guide 9 Leaf spring

Claims (2)

[Claims] 1. A rattling prevention structure for a slide knob, comprising a slide knob, a guide groove provided in a case into which the slide knob is slidably inserted, and a slide switch main body engaging with the slide knob, An elastic hook portion is provided on the slide knob, and when the slide knob is inserted and attached to the guide groove of the case, the elastic hook portion is connected to the guide groove to open the window-shaped guide groove of the case. A structure for preventing rattling of a slide knob, wherein the slide knob is attached to the guide groove of the case while receiving a constant force by the elastic biasing force of the projecting elastic hook portion. . 2. The rattling prevention structure for the slide knob according to claim 1, wherein the slide knob is made of a resin material.