JPS60710A - Small-sized variable resistor - 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 small variable resistor having a double-sided adjustable structure.

Conventionally, small variable resistors have a structure for double-sided adjustment, such as a driver shaft on one side and a driver groove on the cap on the other side, or a long hole in the center of a slider on one side and a groove on the mounting bracket on the other side, but in recent years small In this direction, the above structure has become geometrically impossible.

The present invention provides a compact variable resistor having a structure that can be adjusted on both sides while aiming at miniaturization.

An embodiment of the present invention will be described below with reference to the drawings. In the figure, 1 is an insulating substrate made of an insulating material, and has a hole 1aQ in the center. A chain terminal 2 made of a conductive material is provided around this hole 1a, and the chain terminal 2 extends through the side surface to the back surface. A horseshoe-shaped resistor 3 is provided around the chain terminal 2, and both ends of the resistor 3 are electrically connected to chain terminals 3a and 3b made of a conductive material, and each of the chain terminals 3a and 3b is connected through the side surface. It extends to the back surface of the board 1. Reference numeral 4 denotes a shaft made of a metal material, which has a large diameter portion 4b having a driver groove 41L and an oval (or square) small diameter portion 4Ci, and a circular hole 4df at the tip of the small diameter portion 4C. (I have.

Reference numeral 5 denotes a slider made of a metal material having spring properties, and has a contact 5ia at one end that slides on the resistor 3, and a shaft 4 at the center.
a hole 5b shaped to fit into the small diameter portion 4c of the holder, a contact portion 6C that makes sliding contact with the chain terminal 2, and a notch (or convex portion) 6.
d.

The shaft 4 connects the small diameter portion 4C to the resistor 3 of the insulating substrate 1.
Insert into hole 1& and hole 6b of slider 5 from the opposite side,
It is rotatably attached by caulking. Also, the chain terminal 2 on the back side of the board 1. aa.

Preliminary solders 6a to 6d are provided on the extension portion of 3b and the opposite end thereof to form a contact portion with the outside.

With the small variable resistor having the above configuration, an arbitrary resistance value can be obtained by rotating the slider 5 through the driver groove 4a of the shaft 4 from the opposite side to the resistor 3, and from the resistor 3 from the resistor 3. It has a structure in which the slider 5 is rotated by the shaft hole 4d and the notch 6d of the slider 5 to obtain an arbitrary resistance value.

By using the above structure, the number of parts is reduced even in a small variable resistor, and double-sided adjustment is possible with a simple shaft, making it possible to provide a simplified, high-quality product to the user.

[Brief explanation of the drawing]

Figure 1 A1 and C indicate a top view, sectional view, and bottom view showing an embodiment of a small variable resistor according to the present invention, and Figure 2 A9 indicates an insulating hole constituting the same variable resistor. The top and bottom views of the plate, Figure 3 are the same front views of the shaft, and Figure 4 A9 is the same top and side views of the slider. 1...Insulating substrate, 1a.・Hitting/hole, 3...
...Resistor, 4...Shaft, 4a...Driver groove, 4b...Large diameter part, 4C...
Small diameter portion, 6...Slider, 6d...Notch (protrusion). Name of agent: Patent attorney Toshio Nakao (1st person)
Figure 2 Figure c-s4

Claims (1)

[Claims] An insulating substrate having a hole in the center, a resistor provided around the hole of the insulating substrate, a slider having a notched convex portion on a portion that slides on the resistor, and one end. It consists of a large diameter part with a screwdriver groove at one end and a shaft having a hole in the oval or angular small diameter part at the other end, and the small diameter part of the shaft is placed on the opposite side of the insulating substrate from the resistor surface. A small variable resistor that can be inserted through the shaft and rotatably mounted, and that can be adjusted on both sides by using the screwdriver groove on the shaft on one side and the hole on the shaft and the notch or convex part on the slider on the other side. .