JPS5698366A - Brushless motor - Google Patents

Brushless motor

Info

Publication number
JPS5698366A
JPS5698366A JP12480A JP12480A JPS5698366A JP S5698366 A JPS5698366 A JP S5698366A JP 12480 A JP12480 A JP 12480A JP 12480 A JP12480 A JP 12480A JP S5698366 A JPS5698366 A JP S5698366A
Authority
JP
Japan
Prior art keywords
magnet
magnetic flux
leakage magnetic
motor housing
tachometer generator
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
JP12480A
Other languages
Japanese (ja)
Inventor
Sueo Akashi
Junshiro Inamura
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12480A priority Critical patent/JPS5698366A/en
Publication of JPS5698366A publication Critical patent/JPS5698366A/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
    • H02K29/14—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with speed sensing devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Brushless Motors (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

PURPOSE:To eliminate the adverse effect of the pulsating component leakage magnetic flux of a rotor magnet to the output of a tachometer generator by providing a plurality of projections formed at the opening end of a motor housing at a specific position relation and thereby eliminating the pulsating component of the leakage magnetic flux. CONSTITUTION:A stator substrate 6 having a stator coil 7 is provided to confront a rotor magnet 1, is fixed to the motor housing 8, and the tachometer generator 20 having a magnet 11 and a coil 14 are provided between a bearing boss 10 and a yoke boss 4. Three projections 21-23 for mounting the motor housing 8 on the substrate 6 are disposed at the position displaced by 2/3pi with respect to the magnet 1. Accordingly, the pulsation caused by the leakage magnetic flux of the magnet 1 can be eliminated, the presence of the pulsation at the output of the control tachometer generator 20 can be thereby removed, and the irregular rotation of the motor can therefore be prevented.
JP12480A 1980-01-07 1980-01-07 Brushless motor Pending JPS5698366A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12480A JPS5698366A (en) 1980-01-07 1980-01-07 Brushless motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12480A JPS5698366A (en) 1980-01-07 1980-01-07 Brushless motor

Publications (1)

Publication Number Publication Date
JPS5698366A true JPS5698366A (en) 1981-08-07

Family

ID=11465281

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12480A Pending JPS5698366A (en) 1980-01-07 1980-01-07 Brushless motor

Country Status (1)

Country Link
JP (1) JPS5698366A (en)

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