JPH04116102U - variable resistor - Google Patents

Abstract

(57) [Summary] [Purpose] To visually check the position of the movable part of a variable resistor that responds to the rotation of the adjustment end of the screw from the outside. [Structure] A part of the housing 1 of the variable resistor B whose resistance value is determined by the position of the movable part 4 which is displaced in the axial direction within the housing 1 by rotating the screw 2 can be seen along the screw 2. A transparent long window 5 made of a transparent material is formed and extended, and the movement of the movable part 4 can be visually observed through the transparent long window 5.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This proposal concerns variable resistors used in various setting devices, test devices, controllers, regulators, etc. Ru.

0002

[Conventional technology]

There is a variable resistor A shown in FIG. 2 that is commonly used at present. External protrusion at the end of the housing 1 When the adjusting end 3 of the screw 2 is rotated several dozen times with a flat head screwdriver, the movable part 4 moves from end to end, and the resistance value between terminals a and b or between terminals b and c ranges from 0 to that resistance. It changes to the standard value of device A. Since the number of rotations of screw 2 is high, it is possible to finely adjust the resistance value. However, the movable part 4 cannot be directly viewed from the outside.

0003

[Problem that the idea aims to solve]

When using variable resistor A, you may want to know the current resistance of the variable resistor. It happens often. Normally, before soldering the variable resistor, how many times should you turn screw 2 to get the ohm? The current flowing through the variable resistor is monitored. After soldering However, it would be convenient if the resistance value could be easily determined. In this case, this proposal is effective in solving the above-mentioned conventional problems and meeting the demands. The object is to provide a suitable variable resistor.

0004

[Means to solve the problem]

The solution to the above problem is achieved by adopting the following new characteristic configuration means. will be accomplished. In other words, the feature of the present invention is that when the screw is rotated, it moves in the axial direction according to the rotation. In a variable resistor whose resistance value is determined by the position of the moving part, the surrounding All or part of the housing is made of a transparent material that allows the movement of the movable part to be seen. This is a variable resistor.

[0005]

[Effect]

In this case, since such a measure is taken, the resistance value of the variable resistor changes depending on the rotation of screw 2. It is proportional to the position of the movable part 4 that moves accordingly. Therefore, the position of the movable part 4 is known. If so, you can find the resistance value. Therefore, in order to make this movable part 4 visible from the outside, Transparent in whole or in part.

[0006]

【Example】

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of this embodiment. The variable resistor B of this embodiment is located at the front side 1a of the housing 1 along the reciprocating locus of the movable part 4. A transparent long window 5 in which a transparent material is fitted or integrally formed extends parallel to the screw 2, and A resistance value scale 6 is drawn and extends over the entire length near the upper edge of the transparent long window 5. In this embodiment, although the transparent long window 5 is formed in a part of the container casing 1, the entire container casing 1 is made into a transparent container casing. It is also possible to do so. Note that the same members as those in the variable resistor A in FIG. 2 are given the same reference numerals.

[0007] Since the specifications of this embodiment represent such a specific embodiment, it is possible to Then, use a flathead screwdriver to rotate the adjustment end 3, and rotate the screw 2 together. Accordingly, the movement of the movable part 4 can be monitored one by one, and the position of the movable part 4 can be visually checked at all times. Also, directly read the resistance value scale 6 corresponding to the position of the movable part 4 and find the resistance value at that time. can be recognized visually.

[0008]

[Effect of the idea]

Thus, according to the present invention, since the position of the movable part can be seen from outside the housing, the variable resistor Even after soldering, the resistance value can be immediately determined from the position of the moving part. as before Excellent practicality, as there is no need to count the number of times a screw is turned, making it easier to use It has character and usefulness.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the configuration of a variable resistor showing an embodiment of the present invention.

FIG. 2 is a perspective view showing the configuration of a conventional variable resistor.

[Explanation of symbols]

A, B...variable resistor 1...Equipment cabinet 1a...Front 2...screw 3...Adjustment end 4...Movable part 5...Transparent long window 6...Resistance value scale

Claims (1)

[Scope of utility model registration request] 1. A variable resistor whose resistance value is determined by the position of a movable part that moves in the axial direction in response to the rotation of a screw, wherein all or part of the surrounding housing is movable. A variable resistor characterized by being made of a transparent material that allows the movement of the parts to be seen.