JPS5657958A - Revolution detector - Google Patents
Revolution detectorInfo
- 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
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
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)
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 |
-
1979
- 1979-10-16 JP JP13402979A patent/JPS5657958A/en active Pending
Cited By (1)
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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