JPS6072570U

JPS6072570U - rotation sensor

Info

Publication number: JPS6072570U
Application number: JP16569383U
Authority: JP
Inventors: 星野　貞夫
Original assignee: カルソニックカンセイ株式会社
Priority date: 1983-10-26
Filing date: 1983-10-26
Publication date: 1985-05-22

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の回転センサの断面構造図、第２図はマグ
ネットロータ、検出コイル、カップ状磁性板の拡大斜視
図、第３図は本考案の制御回路構成ブロック図である。１・・・ケース本体、２・・・ケース蓋体、３・・・ス
テータ、４・・・検出コイル、６・・・マグネットロー
タ、７．８・・・軸受、９・・・出力端子、１０．１１
・・・スラスト方向ストッパ、１２・・・入力軸、１３
・・・ユニオンナット、１５・・・リレー、１６・・・
電圧検出回路、１７・・・シュミット回路、１８・・・
増幅回路、１９・・・波形整形回路、ＤＰ・・・電気式
速度計表示部。FIG. 1 is a cross-sectional structural diagram of a conventional rotation sensor, FIG. 2 is an enlarged perspective view of a magnet rotor, a detection coil, and a cup-shaped magnetic plate, and FIG. 3 is a block diagram of a control circuit according to the present invention. DESCRIPTION OF SYMBOLS 1... Case body, 2... Case lid body, 3... Stator, 4... Detection coil, 6... Magnet rotor, 7.8... Bearing, 9... Output terminal, 10.11
...Thrust direction stopper, 12...Input shaft, 13
...Union nut, 15...Relay, 16...
Voltage detection circuit, 17...Schmitt circuit, 18...
Amplifier circuit, 19... Waveform shaping circuit, DP... Electric speedometer display section.

Claims

[Scope of utility model registration request]

A plurality of protrusions 311 are equally divided and molded along the circumferential direction.
, 321 are magnetically combined so that the protrusions 311, 321 are arranged in a circle with uniform intervals, and a ring-shaped detection coil 4 disposed so as to be sandwiched between two magnetic plates 31 and 32; A magnet rotor 6 having the same number of rotor poles as the projecting pieces 31 and 32 is magnetized along the circumferential direction, and the rotation of a rotating body connected to the rotor 6,
In a rotation sensor electrically detected based on an alternating current voltage excited in the detection coil 4 as the rotor 6 rotates, the detection coil 4 is provided with at least one intermediate tap, and the detection coil 4 is provided with at least one intermediate tap. The rotation sensor is characterized in that selection circuits 15 to 18 are provided for detecting the output voltage of the magnet rotor 6 and selecting the intermediate tap on the side where the output voltage from the detection coil 4 is low when the magnet rotor 6 rotates at high speed.