JPS6477452A - Brushless motor - Google Patents

Brushless motor

Info

Publication number
JPS6477452A
JPS6477452A JP62231329A JP23132987A JPS6477452A JP S6477452 A JPS6477452 A JP S6477452A JP 62231329 A JP62231329 A JP 62231329A JP 23132987 A JP23132987 A JP 23132987A JP S6477452 A JPS6477452 A JP S6477452A
Authority
JP
Japan
Prior art keywords
magnets
grooves
pieces
sets
angular width
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
JP62231329A
Other languages
Japanese (ja)
Other versions
JP2668889B2 (en
Inventor
Yoshio Yamada
Makoto Goto
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 JP23132987A priority Critical patent/JP2668889B2/en
Publication of JPS6477452A publication Critical patent/JPS6477452A/en
Application granted granted Critical
Publication of JP2668889B2 publication Critical patent/JP2668889B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Brushless Motors (AREA)

Abstract

PURPOSE:To reduce a cogging torque, by a method wherein magnets are attached by repeating mounting angular width, determined by the numbers of grooves for winding and the numbers of auxiliary grooves, alternately. CONSTITUTION:P pieces or 4 pieces, for example, of C-type field magnets 11-14 are bonded to a rotor shaft 15. A stator core 16 is provided with (n) sets of grooves 17 for winding and (m) sets of auxiliary grooves 18. One block is formed by continuous by Q/2 sets of P pieces of C-type field magnets 11-14, whose mounting angular width of the neighboring magnets is 360 deg./P+[360 deg./(m+ n)]X[1/2Q+j], and continuous two piece of the same magnets, whose mounting angular width of the neighboring magnets is 360 deg./P-[360 deg./(m+n)]X[1/2Q+j] (wherein; (j) is an integer including 0 and Q is the exact divisor of P excluding 1), while P/Q blocks of this block are formed.
JP23132987A 1987-09-16 1987-09-16 Brushless electric motor Expired - Fee Related JP2668889B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23132987A JP2668889B2 (en) 1987-09-16 1987-09-16 Brushless electric motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23132987A JP2668889B2 (en) 1987-09-16 1987-09-16 Brushless electric motor

Publications (2)

Publication Number Publication Date
JPS6477452A true JPS6477452A (en) 1989-03-23
JP2668889B2 JP2668889B2 (en) 1997-10-27

Family

ID=16921927

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23132987A Expired - Fee Related JP2668889B2 (en) 1987-09-16 1987-09-16 Brushless electric motor

Country Status (1)

Country Link
JP (1) JP2668889B2 (en)

Also Published As

Publication number Publication date
JP2668889B2 (en) 1997-10-27

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees