JPS5657958A - Revolution detector - Google Patents

Revolution detector

Info

Publication number
JPS5657958A
JPS5657958A JP13402979A JP13402979A JPS5657958A JP S5657958 A JPS5657958 A JP S5657958A JP 13402979 A JP13402979 A JP 13402979A JP 13402979 A JP13402979 A JP 13402979A JP S5657958 A JPS5657958 A JP S5657958A
Authority
JP
Japan
Prior art keywords
disc
tooth profile
profile part
magnetic
beading
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP13402979A
Other languages
Japanese (ja)
Inventor
Daizaburo Kubota
Hiroaki Takase
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP13402979A priority Critical patent/JPS5657958A/en
Publication of JPS5657958A publication Critical patent/JPS5657958A/en
Pending legal-status Critical Current

Links

Landscapes

  • Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

PURPOSE: To change mechanical rigidity and reduce the vibrating sound produced by magnetic induction action in a device of detecting revolutions by magnetic induction action, by subjecting a plate body constituting a magnetic circuit to beading, piercing, etc.
CONSTITUTION: Slender convex parts 8b by beading are provided radially at several places to a disc 8 of a soft magnetic material formed with a tooth profile part 8a on the outside circumferential part. A coil bobbin 5 and an annular permanent magnet 6 are placed between this disc 8 and a disc 7 of a soft magnetic material and are fixed to a substrate 1. When a rotor 14 revolves and the magnetic resistance of the magnetic circuit formed by the tooth profile part 14a of the rotor 14 and the tooth profile part 8a of the disc 8 changes, the signal corresponding to revolutions is obtained from the coil 13.
COPYRIGHT: (C)1981,JPO&Japio
JP13402979A 1979-10-16 1979-10-16 Revolution detector Pending JPS5657958A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13402979A JPS5657958A (en) 1979-10-16 1979-10-16 Revolution detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13402979A JPS5657958A (en) 1979-10-16 1979-10-16 Revolution detector

Publications (1)

Publication Number Publication Date
JPS5657958A true JPS5657958A (en) 1981-05-20

Family

ID=15118704

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13402979A Pending JPS5657958A (en) 1979-10-16 1979-10-16 Revolution detector

Country Status (1)

Country Link
JP (1) JPS5657958A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5871168U (en) * 1981-11-07 1983-05-14 日本コロムビア株式会社 speed detection device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5871168U (en) * 1981-11-07 1983-05-14 日本コロムビア株式会社 speed detection device

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