JPS57116574A - 3-phase brushless motor - Google Patents

3-phase brushless motor

Info

Publication number
JPS57116574A
JPS57116574A JP56002944A JP294481A JPS57116574A JP S57116574 A JPS57116574 A JP S57116574A JP 56002944 A JP56002944 A JP 56002944A JP 294481 A JP294481 A JP 294481A JP S57116574 A JPS57116574 A JP S57116574A
Authority
JP
Japan
Prior art keywords
interval
poles
detectors
magnet
position detector
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
JP56002944A
Other languages
Japanese (ja)
Inventor
Kenichi Amano
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP56002944A priority Critical patent/JPS57116574A/en
Publication of JPS57116574A publication Critical patent/JPS57116574A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • H02K29/10—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using light effect devices

Abstract

PURPOSE:To simplify a motor drive circuit having a rotary position detector by sequentially energizing 3-phase coils one by one in response to a signal obtained from the position detector. CONSTITUTION:A rotor magnet 1 is magnetized to four poles, and a shaft 2 is secured to the center of the magnet. Three armature cores 4a-4c are provided on the planar surface of a stator, and salient poles 5a, 5b are formed at both ends of the respective cores 4a-4c. The interval between the poles 5a and 5b is set at 90 deg., and 3-phase coils P1-P3 are wound on one pole 5a of the respective cores 4a-4c. The interval between the coils is at 120 deg.. Rotor position detecting colored parts 6a, 6b, 6a' are formed at the peripheral surface of the rotor magnet 1, and detectors S1, S2 having light emitting elements are disposed closely and opposite to the colored parts at the stator side. The interval between the detectors S1 and S2 is at 120 deg..
JP56002944A 1981-01-12 1981-01-12 3-phase brushless motor Pending JPS57116574A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56002944A JPS57116574A (en) 1981-01-12 1981-01-12 3-phase brushless motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56002944A JPS57116574A (en) 1981-01-12 1981-01-12 3-phase brushless motor

Publications (1)

Publication Number Publication Date
JPS57116574A true JPS57116574A (en) 1982-07-20

Family

ID=11543468

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56002944A Pending JPS57116574A (en) 1981-01-12 1981-01-12 3-phase brushless motor

Country Status (1)

Country Link
JP (1) JPS57116574A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6261183U (en) * 1985-10-07 1987-04-16
JPS6261184U (en) * 1985-10-07 1987-04-16
JPS6288471U (en) * 1985-11-22 1987-06-05

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6261183U (en) * 1985-10-07 1987-04-16
JPS6261184U (en) * 1985-10-07 1987-04-16
JPH0528939Y2 (en) * 1985-10-07 1993-07-26
JPS6288471U (en) * 1985-11-22 1987-06-05

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