JPS58147208U

JPS58147208U - variable resistor

Info

Publication number: JPS58147208U
Application number: JP4540882U
Authority: JP
Inventors: 西沢　英夫
Original assignee: 株式会社村田製作所
Priority date: 1982-03-29
Filing date: 1982-03-29
Publication date: 1983-10-03
Also published as: JPS6244491Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図ないし第３図は第１の従来例を示し、第１図は平
面図、第２図は中央断面図、第３図は調整軸を下方から
示した斜視図である。第４図および第５図は第２の従来
例の要部を示し。第４図はワイパを上方から示した斜視
図、第５図は調整軸を下方から示した斜視図である。第
６図はこの考案の一実施例の中央断面図である。第７図
は第６図のワイパを上方から示した斜視図である。第８
図は第６図の調整軸を下方から示した斜視図である。第
９図は第６図の調整軸を上方から示した斜視図である。第１０図はこの考案の他の実施例の調整軸の正面図であ
る。図において、２０は基板、２１は調整軸、２２はワイパ
、２３は軸部、２４は穴、２５は抵控膜、２６は接点部
、２８は頭部、３０は円形部分、３１は垂直壁部、３２
は穴、３３は段部、３４は開口としての穴、３６は突起
である。1 to 3 show a first conventional example, in which FIG. 1 is a plan view, FIG. 2 is a central sectional view, and FIG. 3 is a perspective view of the adjustment shaft seen from below. FIGS. 4 and 5 show the main parts of the second conventional example. FIG. 4 is a perspective view of the wiper from above, and FIG. 5 is a perspective view of the adjustment shaft from below. FIG. 6 is a central sectional view of an embodiment of this invention. FIG. 7 is a perspective view of the wiper of FIG. 6, viewed from above. 8th
This figure is a perspective view showing the adjustment shaft of FIG. 6 from below. FIG. 9 is a perspective view of the adjustment shaft shown in FIG. 6, viewed from above. FIG. 10 is a front view of the adjustment shaft of another embodiment of this invention. In the figure, 20 is a substrate, 21 is an adjustment shaft, 22 is a wiper, 23 is a shaft portion, 24 is a hole, 25 is a resistive film, 26 is a contact portion, 28 is a head, 30 is a circular portion, and 31 is a vertical wall. Part, 32
33 is a hole, 33 is a step, 34 is a hole as an opening, and 36 is a protrusion.

Claims

[Claim for Utility Model Registration] A board, an adjustment shaft, and a wiper are provided, and the adjustment shaft is rotatably held relative to the board with the shaft portion of the adjustment shaft inserted into a hole provided in the board. A resistive film is formed in a C-shape, and the adjusting shaft and the wiper are rotated together by means of a retaining means that engages with each other when the wiper receives the shaft portion of the adjusting shaft. In the variable resistor in which the contact portion of the wiper slides while contacting the resistive film, the wiper has a circular portion that contacts the substrate, and a vertical wall portion rising from the outer periphery of the circular portion. the contact portion is formed extending from an upper end of the vertical wall portion, the head of the adjustment shaft includes a step portion that contacts the circular portion and is received within a space defined by the circular portion and the vertical wall portion; The engagement means includes a protrusion that protrudes laterally from the stepped portion;
A variable resistor comprising an opening formed in the vertical wall portion and receiving the protrusion.