JPH0289862U

JPH0289862U -

Info

Publication number: JPH0289862U
Application number: JP1988169925U
Authority: JP
Priority date: 1988-12-28
Filing date: 1988-12-28
Publication date: 1990-07-17

Description

[Brief explanation of drawings]

第１図はこの考案の第１実施例の無接触式ポテ
ンシヨメータの縦断正面図、第２図はその縦断側
面図、第３図は第２図の−線に沿つた横断面
図、第４図は第２図の−線に沿つた横断面図
、第５図はこの考案の第２実施例の縦断正面図、
第６図は第２実施例の温度補償回路図、第７図Ａ
，Ｂ，Ｃは従来の無接触式ポテンシヨメータの基
本的構成を示す縦断側面図、第８図Ａ，Ｂ，Ｃは
その平面図である。１……無接触式ポテンシヨメータ、２……断面
コ字状のヨーク、２ａ，２ｂ……断面コ字状のヨ
ークの両脚部、４，５……第１および第２の磁気
抵抗素子、６ａ，６ｂ……１対の永久磁石、７…
…駆動軸、８……摺動部材、１１……断面円形の
孔、１２……断面コ字状の凹部、１３……第１の
案内棒、１４……第２の案内棒、２０……基板、
２３……筐体、３０……保持部材、３３……温度
補償機能を具備さるための固定抵抗。 FIG. 1 is a longitudinal sectional front view of a non-contact potentiometer according to the first embodiment of this invention, FIG. 2 is a longitudinal sectional side view thereof, FIG. 4 is a cross-sectional view taken along the - line in FIG. 2, and FIG. 5 is a longitudinal sectional front view of the second embodiment of this invention.
Figure 6 is a temperature compensation circuit diagram of the second embodiment, Figure 7A
, B, and C are vertical side views showing the basic structure of a conventional non-contact type potentiometer, and FIGS. 8A, B, and C are plan views thereof. 1... Non-contact potentiometer, 2... Yoke having a U-shaped cross section, 2a, 2b... Both legs of the yoke having a U-shaped cross section, 4, 5... First and second magnetoresistive elements, 6a, 6b...a pair of permanent magnets, 7...
... Drive shaft, 8 ... Sliding member, 11 ... Circular cross section hole, 12 ... U-shaped cross section recess, 13 ... First guide rod, 14 ... Second guide rod, 20 ... substrate,
23... Housing, 30... Holding member, 33... Fixed resistor for providing temperature compensation function.

Claims

[Claims for Utility Model Registration] (1) A drive shaft that is pressed by the detected part to control the insertion amount into the housing, and a hole fixed to this drive shaft and having a circular cross section at a symmetrical position of the drive shaft. a sliding member provided with a recess having a U-shaped cross section, a first guide rod inserted into the hole having a circular cross section, and a second guide rod inserted into the recess having a U-shaped cross section; A yoke having a U-shaped cross section fixed to the sliding member, a pair of permanent magnets fixed to both legs of the yoke, and a yoke mounted on a substrate integrally attached to the casing, and First and second magnetoresistive elements arranged in a non-contact state between a pair of permanent magnets, and one end to which the connection midpoint of one end of the first and second magnetoresistive elements are connected. A non-contact potentiometer comprising an output terminal and another output terminal to which the other end of the first or second magnetoresistive element is connected. (2) A drive shaft that is pressed by the detected part to control the insertion amount into the housing, and a hole that is fixed to this drive shaft and has a hole with a circular cross section and a recess with a U-shaped cross section at a symmetrical position of the drive shaft. A sliding member provided, a first guide rod inserted into the hole having a circular cross section, a second guide rod inserted into the recess having a U-shaped cross section, and a second guide rod fixed to the sliding member. A yoke having a U-shaped cross section, a pair of permanent magnets fixed to both legs of the yoke, and a non-contact magnet mounted on a board integrally attached to the housing and between the pair of permanent magnets. First and second magnetoresistive elements arranged in contact with each other, and a temperature compensation function connected in series and parallel to the first and second magnetoresistive elements inside the housing. A non-contact potentiometer consisting of a fixed resistance circuit.