JPS5657955A - Revolution detector - Google Patents
Revolution detectorInfo
- Publication number
- JPS5657955A JPS5657955A JP13402679A JP13402679A JPS5657955A JP S5657955 A JPS5657955 A JP S5657955A JP 13402679 A JP13402679 A JP 13402679A JP 13402679 A JP13402679 A JP 13402679A JP S5657955 A JPS5657955 A JP S5657955A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- coil
- rotor
- binding
- powder
- 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 improve the accuracy of revolution detection owing to the variances in the sizes of a coil bobbin and an annular permanent magnet by binding the powder of permanent magnet by means of a synthetic resin and forming the coil bobbin and annular permanent magnet into one piece.
CONSTITUTION: A resin magnet material 16 binding the powder of ferromagnetic material by means of a synthetic resin is magnetized in a vertical direction and grooves for winding a coil 13 are provided on the outside circumference thereof. This platelike member 16 is fixed 11 to the posts 9 fixed to a substrate 1 in such a manner as to be sandwiched by discs 7, 8 comprising a soft magnetic material. When a rotor 14 rotates and the magnetic resistance of the magnetic circuit by the tooth profile part 8a of the disc 8 and the tooth profile part 14a of the rotor 14 changes, the signal corresponding to the number of revolutions is obtained from the coil 13.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13402679A JPS5657955A (en) | 1979-10-16 | 1979-10-16 | Revolution detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13402679A JPS5657955A (en) | 1979-10-16 | 1979-10-16 | Revolution detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5657955A true JPS5657955A (en) | 1981-05-20 |
Family
ID=15118632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13402679A Pending JPS5657955A (en) | 1979-10-16 | 1979-10-16 | Revolution detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5657955A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58125867U (en) * | 1982-02-18 | 1983-08-26 | ソニー株式会社 | Capstan shaft rotation detection device |
JPS58168875U (en) * | 1982-05-06 | 1983-11-10 | 松下電器産業株式会社 | frequency generator |
-
1979
- 1979-10-16 JP JP13402679A patent/JPS5657955A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58125867U (en) * | 1982-02-18 | 1983-08-26 | ソニー株式会社 | Capstan shaft rotation detection device |
JPS58168875U (en) * | 1982-05-06 | 1983-11-10 | 松下電器産業株式会社 | frequency generator |
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