Linear displacement potentiometer

A linear displacement and potentiometer technology, applied in the direction of resistors, sliding contact resistors, electrical components, etc., can solve the problems of complex structure of magnetostrictive displacement sensors, difficulty in realizing special output signals and curves, limited working life, etc., to achieve Avoid accuracy changes, good linear accuracy, and prolong working life

Active Publication Date: 2017-05-31
SHANGHAI SIBO MANDE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has several inherent defects: first, there is friction when the brush slides on the resistor body, resulting in a limited working life, and at the same time, the accuracy will change due to wear; second, the potentiometer can only output linearly changing Voltage signal, it is difficult to realize special output signal and curve
However, the structure of the magnetostrictive displacement sensor is complex, and there are certain requirements for the material of the parts, so its cost is high

Method used

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  • Linear displacement potentiometer
  • Linear displacement potentiometer
  • Linear displacement potentiometer

Examples

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no. 1 example

[0031] The first embodiment of a linear displacement potentiometer of the present invention includes a magnetic shielding shell 1, and passes through the magnetic shielding shell 1 along the horizontal axis of the magnetic shielding shell 1, and can be carried out along the axial direction of the magnetic shielding shell 1. Spindle 2 for horizontal linear displacement.

[0032] The magnetic shielding shell 1 is divided into a shell 11 with two ends open, a front cover 12 closing the front end of the shell 11 , and a rear cover 13 closing the rear end of the shell 11 . Wherein the front cover 12 is embedded with a front axle sleeve 14 . The front end of the main shaft 2 horizontally passes through the front sleeve 14 and the front cover 12 along the axial direction of the magnetic shielding shell 1 . The front bushing 14 supports and guides the main shaft 2, and the cooperation between the front bushing 14 and the main shaft 2 can be realized by selecting corresponding linear ...

no. 2 example

[0053] Compared with the first embodiment, the second embodiment of a linear displacement potentiometer of the present invention is different in that: a rear bushing 15 is embedded in the rear cover 13 . The front end of the main shaft 2 horizontally passes through the front sleeve 14 and the front cover 12 along the axial direction of the magnetic shielding shell 1 . The front bushing 14 supports and guides the main shaft 2, and the cooperation between the front bushing 14 and the main shaft 2 can be realized by selecting corresponding linear bearings according to different usage occasions, such as sliding bearings, bushings, and sealing bearings. Linear bearings, etc.

[0054] The rear end of the main shaft 2 horizontally passes through the rear bushing 15 and the rear cover 13 along the axial direction of the magnetic shielding shell 1 . The rear bushing 15 supports and guides the main shaft 2 . The cooperation between the rear bushing 15 and the main shaft 2 can be reali...

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Abstract

The invention discloses a linear displacement potentiometer and belongs to the field of electronic devices. The linear displacement potentiometer comprises a magnetic shielding shell, a Hall sensor fixed in the magnetic shielding shell and a permanent magnet part which can do horizontal linear displacement in the magnetic shielding shell along the axial direction of the magnetic shielding shell; the Hall sensor and the permanent magnet part are arranged in the magnetic shielding shell in a staggered manner; an output signal of the Hall sensor is output through a lead wire. The linear displacement potentiometer has the technical effects that firstly, precision changes caused by abrasion between an electric brush and a resistor body is avoided and the service life of the linear displacement potentiometer is prolonged; secondly, when the output signal of the Hall sensor is a linear signal, the linear displacement potentiometer has linear precision better than that of a traditional linear displacement potentiometer; thirdly, the variety of the output signal capable of being outputted can be increased through pre-programming the Hall sensor; the measurement of a plurality of types of working strokes is realized and the cost of a product is reduced.

Description

technical field [0001] The invention relates to a linear displacement potentiometer in the field of electronic devices. Background technique [0002] At present, the traditional linear displacement potentiometer works in brush contact mode, and its components include: resistor body, sliding brush, shaft, and shell. The power supply voltage is loaded on both ends of the resistor body through the terminal, and the brush slides on it to detect and output the voltage at the position of the brush, which is a direct contact method. It has several inherent defects: first, there is friction when the brush slides on the resistor body, resulting in a limited working life, and at the same time, the accuracy will change due to wear; second, the potentiometer can only output linearly changing Voltage signal, it is difficult to realize special output signal and curve. [0003] In order to overcome the shortcomings of the limited life of the contact linear displacement potentiometer and ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H01C10/38H01C13/02
CPCH01C10/38H01C13/02
Inventor姚振宇张润榕杨磊叶晓燕
OwnerSHANGHAI SIBO MANDE CO LTD