JPS6046009A - Slider of 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 slider for a variable resistor, and as the distance between the contacts becomes shorter, the elasticity of the arm decreases, but in the present invention, the elasticity is increased to a large amount. This provides a structure that can ensure a sufficient amount of elasticity even if the distance between the contacts is short.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. In the figure, reference numeral 1 denotes a case made of an insulating material that is open at one end, and this case 1 has a hollow portion 1a at the inner bottom and a hole 1b at the center of the inner bottom. Reference numeral 2 denotes a shaft made of an insulating material that is inserted into the hole 1b of the case 1 from the hollow portion 1a side, and is rotatably mounted. A slider 3 made of a threadable metal material is fixed to the end surface of the shaft 20 case 1 on the opening side. Measurement portion 3 of the above slider 3
Mounting claws 3b are raised on both sides of a, and the groove 2a of the shaft 2
The mating position is determined. Further, one side of the slider 3 is provided with a U-shaped arm 3C, and the other side is provided with a rectangular arm 3d.
is provided. The U-shaped arm 3C and the rectangular arm 3d are bent in the same direction, and the rectangular arm 3d enters the gap 3e of the U-shaped arm 3C, so that they are mutually lI3.
The shape is such that when you make a sound, the tip comes to the opposite side.

In addition, a contact portion s is provided at the tip of each arm 3c, 3d.
04 is an insulating board mounted on the opening of the case 1, and the peripheral edge of the insulating board 4 is connected to the stepped part 1clC of the case 1.
It is installed in a U-contact manner. Hollow part 1a of 4 insulating groups
Six electrodes are provided in the center of the side, and the electrodes 6
6 resistors are provided around the slider 3.
As the shaft 2 rotates, the contact portions 3f and sg come into sliding contact with the resistor 6 and the electrode 5, and are in rotatable electrical contact. The electrode 6 extends downward and is electrically drawn out to the outside via a terminal (not shown) and soldering. It's Kade.
Silver electrodes 5a and 5b are provided at both ends of the resistor 60, and are similarly drawn out to the outside via terminals (not shown) and soldering. The cover is an epoxy thermosetting resin filled on the insulating substrate 4, and the resin 7 seals it.

4 and 5 are a cross-sectional view of the entire structure and a perspective view of the slider showing the conventional example, but since the distance between the contacts is short, the elasticity of the slider 8 is small, and the mounting of the insulating substrate 4 is difficult. There is a lack of elasticity on the other hand. According to the present invention, as can be seen by comparing FIG. 2 and FIG. 5, when the contact distance is the same, the arm of the slider of the present invention is longer and has more elasticity.

In a variable resistor configured as described above, the shorter the distance between the contacts (the smaller the size), the more effective the slider of the present invention is in securing the elasticity, providing the user with a high-quality product. This is what we intend to provide, and it is of high practical value.

The intersection of the rectangular arm and the U-shaped arm prevents the rectangular arm from bending toward the VIi side, lengthening the arm and preventing deformation at the same time.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a variable resistor using a slider according to the present invention, FIG. 2 is a perspective view showing an example of the slider according to the present invention, and FIG. 3 is a variable resistor shown in FIG. 4 is a sectional view of a conventional variable resistor using four sliders, and FIG. 5 is a perspective view of a conventional slider. 3...Slider, 3a...Mounting part, 3C
... U-shaped arm, 3d... Rectangular arm, 3e ... - gap 0 Agent's name Patent attorney Toshi Nakao (Male) and 1 other person No. 1
Figure 2b Figure 3. Figure 4 Figure 5

Claims (1)

[Claims] A shape having a mounting part in the center, a U-shaped p-arm on one side, and a rectangular arm on the other is bent in the same direction at both ends of the mounting part, and the rectangular arm is shaped like the U-shape. A slider of a variable resistor, characterized in that the arms of the slider are crossed through a gap between the arms of the variable resistor.