JPS54158616A - Revolving speed signal detector - Google Patents

Revolving speed signal detector

Info

Publication number
JPS54158616A
JPS54158616A JP6703678A JP6703678A JPS54158616A JP S54158616 A JPS54158616 A JP S54158616A JP 6703678 A JP6703678 A JP 6703678A JP 6703678 A JP6703678 A JP 6703678A JP S54158616 A JPS54158616 A JP S54158616A
Authority
JP
Japan
Prior art keywords
detecting coils
magnetic
peripheral surface
magnetic body
poles
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.)
Granted
Application number
JP6703678A
Other languages
Japanese (ja)
Other versions
JPS5947942B2 (en
Inventor
Toshiyuki Matsumoto
Unemasa Niimi
Shuichi Obata
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 JP53067036A priority Critical patent/JPS5947942B2/en
Priority to US06/041,823 priority patent/US4302692A/en
Priority to NLAANVRAGE7904271,A priority patent/NL182440C/en
Priority to FR7913825A priority patent/FR2427607B1/en
Priority to GB7919074A priority patent/GB2022326B/en
Priority to DE2922558A priority patent/DE2922558C2/en
Priority to CA000328889A priority patent/CA1121022A/en
Publication of JPS54158616A publication Critical patent/JPS54158616A/en
Publication of JPS5947942B2 publication Critical patent/JPS5947942B2/en
Expired 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 obtain a large output detector by disposing ring shaped detecting coils against to magnetic poles for a revolving speed detection magnetized on an external peripheral surface of a cylindrical shaped magnet and by providing a ring shaped magnetic body at an external periphery of detecting coils.
CONSTITUTION: At an internal peripheral surface of a cylindrical shaped rotor magnet 1, n poles magnetic pole train to be used for a rotation driving of a rotor magnet 1 acting with a stator 4 are magnetized and at an external peripheral surface m(m>n) poles magnetic pole train are magnetized for a revolving speed detection. And detecting coils 5 facing against to m poles magnetic pole train and a magnetic body 6 so as to surround an external peripheral surface of these detecting coils 5 are disposed. As for detecting coils 5 and a magnetic body 6, one formed wave shaped detecting windings and one coated with a magnetic material upon insulating sheets respectively are used, detecting coils 5 and a magnetic body 6 are made as one body and is grab held by a supporter 7 consisting of an external peripheral ring 7A made of a non-magnetic body and an internal ring 7B.
COPYRIGHT: (C)1979,JPO&Japio
JP53067036A 1978-02-06 1978-06-02 Rotational speed signal detector Expired JPS5947942B2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP53067036A JPS5947942B2 (en) 1978-06-02 1978-06-02 Rotational speed signal detector
US06/041,823 US4302692A (en) 1978-02-06 1979-05-23 Rotational speed signal sensor
NLAANVRAGE7904271,A NL182440C (en) 1978-06-02 1979-05-30 ELECTRIC MOTOR WITH BUILT-IN TACHOMETER.
FR7913825A FR2427607B1 (en) 1978-06-02 1979-05-30 ROTATION SPEED SENSOR
GB7919074A GB2022326B (en) 1978-06-02 1979-05-31 Electric motor with speed sensor
DE2922558A DE2922558C2 (en) 1978-06-02 1979-06-01 Speed sensor for a DC motor
CA000328889A CA1121022A (en) 1978-06-02 1979-06-01 Rotational speed signal sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53067036A JPS5947942B2 (en) 1978-06-02 1978-06-02 Rotational speed signal detector

Publications (2)

Publication Number Publication Date
JPS54158616A true JPS54158616A (en) 1979-12-14
JPS5947942B2 JPS5947942B2 (en) 1984-11-22

Family

ID=13333229

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53067036A Expired JPS5947942B2 (en) 1978-02-06 1978-06-02 Rotational speed signal detector

Country Status (1)

Country Link
JP (1) JPS5947942B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6161253A (en) * 1984-08-31 1986-03-29 Seiko Epson Corp Rotary head drum

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6170827U (en) * 1984-10-17 1986-05-14
JPH02298910A (en) * 1989-05-12 1990-12-11 Toto Ltd Optical switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6161253A (en) * 1984-08-31 1986-03-29 Seiko Epson Corp Rotary head drum

Also Published As

Publication number Publication date
JPS5947942B2 (en) 1984-11-22

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