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Variable resistance

A resistor, variable technology, applied in the direction of surface mountable resistors, sliding contact resistors, etc., can solve problems such as terminal short circuit, achieve high productivity, improve the effect, and improve the effect of suppression

Active Publication Date: 2006-11-01
ALPS ALPINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, in the structure of the conventional varistor, when the insulating substrate made of phenolic resin or the like is insert-molded in the casing made of insulating material such as synthetic resin, there is a problem that the insulating There is a very small gap between the substrate and the synthetic resin
Also, if metal migration (whisker or migration) of the terminal plating material occurs, a short circuit can occur between the terminals through the gap

Method used

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Embodiment Construction

[0033] the following, Figure 1 to Figure 8 Embodiments of the present invention are shown. figure 1 is a sectional view showing a variable resistor of the present invention, figure 2 It is a front view showing an insulating substrate and a holding member of a variable resistor of the present invention, image 3 yes figure 2 In the sectional view of line 3-3, Figure 4 yes figure 2 sectional view of line 4-4 in, Figure 5 It is a front view showing the terminal insulating substrate of the variable resistor of the present invention, Figure 6 yes Figure 5 rear view of Figure 7 yes Figure 5 The sectional drawing of line 7-7, Figure 8 It is a front view showing the insulating substrate of the varistor of the present invention.

[0034] In the figure, the variable resistor of the present invention is composed of the following parts, including: an operation shaft 1; a shaft seat 2 that rotatably holds the operation shaft 1; The driving body 3 rotated by the rotat...

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Abstract

To provide a highly reliable variable resistor for hardly generating a short-circuit failure between terminals even if insert-molding an insulating substrate in a housing made of synthetic resin. This variable resistor is provided with a plate-shaped insulating substrate 7 formed with a resistor 8 and a collector 9, a plurality of mounting holes 7b formed at one edge side of the insulating substrate 7, a plurality of terminals 10 fixed to the plurality of mounting holes 7b so as to be conducted to the resistor 8 and the collector 9, and extended from one edge side of the insulating substrate 7 to the outside, a holding member 11 made of synthetic resin in which the fixed sections of the plurality of terminals 10 and the insulating substrate 7 are embedded in such a status that the resistor 8 and the collector 9 are exposed and a slider 6 sliding on the resistor 8 and the collector 9 and an insulating protrusions 11b and 11c extended to a direction crossing the plane face of the insulating substrate 7 between fixed sections of the plurality of terminals 10 fixed to the insulating substrate 7.

Description

technical field [0001] The present invention relates to a structure of a variable resistor that is used in audio equipment and the like, and is used to adjust volume and the like by rotating an operation knob. Background technique [0002] As a structure of a conventional varistor, there is known a structure in which a rotating body having a conductive slider is opposed to an insulating substrate held in a case and on which a resistor or the like is formed. The rotating body rotates according to the rotating operation of the operating shaft, and the slider is brought into sliding contact with the resistor to detect a change in the resistance value (for example, refer to Patent Document 1). [0003] Figure 9 The structure of such a conventional variable resistor is shown. Figure 9 It is a sectional view showing a conventional varistor. [0004] In the figure, the shaft base 51 is integrally formed into a substantially cylindrical shape by using die-cast zinc. The shaft ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C10/30
CPCH01C10/005H01C10/34
Inventor 川崎健造小出伸广
Owner ALPS ALPINE CO LTD
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