JPS60704A - Rotary operation type electronic part - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary-operable electronic component such as a variable resistor. In particular, the strength of a stopper that regulates the rotation angle of an operating shaft can be doubled, and it can also be used for various rotation angles. A variable resistor with a stopper function for an operating shaft has conventionally had the configuration shown in FIG. 1. In fig.

An operating shaft 3 having a stepped portion 2 on its side surface is rotatably inserted into the bearing 1. A front stage mounting plate 6 on which a resistor 5 is mounted is brought into contact with the shield plate 4 which is integrated with the bearing 1. Then, the upper surface opening, the 7° lower surface opening 8 and the upper surface connecting portion 9. Cylindrical cover 1 having a 1° bottom connecting portion
1 is caulked and fixed to the side wall portion 12 of the front mounting plate 6 and the cover retaining wall 13 of the shield plate 4 at the lower surface connecting portion 1o.

A convex stopper 14 is provided on the side surface of the cover 11.

The rotation angle of the operating shaft 3 is regulated by coming into contact with a protrusion 16 of a slider receiver 16 attached to the tip of the operating shaft 3. A rear mounting plate 18 having a resistor 17 (not shown) mounted on its lower surface is fixed to the upper surface opening 7 side of the cover 11 by caulking with the upper surface connecting portion 9 . In addition, sliders 19.2 are provided on the lower surface side and the upper surface side of the slider receiver 15.
0 is fixed, and these sliders 19 and 2o slide on the resistors 6 and 17 by rotating the operation 1lls.

In addition, contactors 21 and 22 (here, 22 is not shown) attached to the mounting plates 18 are in constant contact with the sliders 19 and 20.

In the conventional variable resistor having the above configuration, the operating shaft 3
When the slider receiver 16 is rotated, the slider receiver 16 also rotates, and eventually the protrusion 16 of the slider receiver 15 comes into contact with the stopper 14 of the cover 11, and the rotation of the operating shaft 3 is stopped. Here, when a rotational force in the same direction is further applied to the operating shaft 3, this force is applied to the operating shaft 3→slider receiver 15->protruding portion 16→stopper 14→side surface of cover 11→lower surface connecting portion 1Q- The cover 1 is transmitted to the thin shield plate 4.
1 is composed of a metal plate, and the contact area between the stopper 14 and the protrusion 16 is determined by the thickness of the metal plate, so it is extremely difficult to contact the stopper 14 and the protrusion 16. When , the stopper 14 bites into the protrusion 16,
The limit angle of the operating shaft 3 will shift, and the function of the variable resistor will be impaired.

In order to improve the above-mentioned drawbacks of the conventional products, the present invention provides a rotationally operated electronic component that has two stoppers without changing the effective rotation angle of the operating shaft and improves the strength of preventing rotation of the operating shaft. That is.

An embodiment of the present invention will be described below with reference to FIGS. 2 and 3, with the same numbers assigned to the same parts as above.

The feature of this embodiment is that a convex stopper 14' is added to the side surface of the cover 11 at a position almost symmetrical to the conventional stopper 14 with respect to the center of the operating shaft 3, and the slider receiver 1
6 also has a protrusion 16' added thereto. Here, when the operating shaft 3 is rotated, the protrusions 16 and 16' each come into contact with the stoppers 14+14'. These two abutting portions are shifted in position in the axial direction, so that the protruding portion 16 does not abut against the stopper 14', and the protruding portion 16'
It does not come into contact with the Hastonoper 14. Therefore, the effective rotation angle of the operating shaft 3 can be 1800 or more.

Furthermore, the protrusions 16, 16' and the stopper 14°1
If the axial positional relationship of 4' is taken as A-B in FIG. 3, the cylindrical cover 11 will have no axial directionality, which will have a great effect on improving the efficiency of the assembly operation.

be. In addition, compared to the case where the cover 11 has two stoppers on one side, the unexploded BA is arranged at two symmetrical positions, so the force applied to the lower surface connecting part 1o of the cover 11 is dispersed, and the loosening of the cover 11 is prevented. It is advantageous for

Furthermore, the rotation angle regulation range f of the operating shaft 3 is: 18o0 to 3
, 600, please refer to Figure 4 I1.
As shown in the figure, one stopper 14 provided on the inner periphery of the cover 11 is kept at a constant position, and the other stopper 14 is
By changing the position of ', there is an advantage that it can be easily adapted without changing any other used parts.

In the above embodiment, the case of a variable resistor has been described, but it goes without saying that the present invention can also be applied to other rotationally operated electronic components.

As described above, the rotationally operated electronic component according to the present invention can increase the rotation stopping strength at the stopper part and the cover connecting part to about twice that of conventional products without increasing the number of parts, and - especially It is possible to obtain the same strength as a dog-shaped variable resistor in a small variable resistor. It also has the advantage of being able to easily accommodate requests for various rotation angles.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of a conventional variable resistor, Fig. 2 is an exploded perspective view showing an example of a variable resistor implementing the rotary operation type electronic component according to the present invention, and Fig. 3 is an exploded perspective view of the same assembled state. Cross-sectional view, FIG. 4A+of'j: A top view of essential parts for explaining the rotation angle regulation range in the same variable resistor. 1...Bearing, 3...Operation shaft, 11...
...Cylindrical cover% 14, 14'...Convex stopper, 15...Rotating body (slider receiver)%
16, 16'...protrusion. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 4

Claims (1)

[Scope of Claims] - (1) A rotating body having two protrusions is coupled to the tip of an operating shaft that is fitted and supported by a bearing, and abuts each of the two protrusions of the rotating body. A rotationally operated electronic component, characterized in that the convex stoppers are housed in a cylindrical cover having two convex stoppers on the inner periphery, and the two abutting portions are located at different positions in the axial direction. (2) The two protrusions on the rotating body and the two stoppers on the inner periphery of the cylindrical cover are arranged approximately symmetrically with respect to the center of the operating shaft, and these two sets of protrusions and stoppers are brought into contact almost simultaneously. A rotatably operated electronic component according to claim 1, which is configured such that the two components touch each other.