Title:
BRUSHLESS MOTOR
Document Type and Number:
WIPO Patent Application WO/2000/019587
Kind Code:
A1
Abstract:
A brushless motor includes protective means having a simple mechanism for protecting electronic components and so forth provided on a control board against both static electricity and heat of a heat sink. A protective member is provided which comprises integrated two mechanisms: a potential equalizing mechanism for equalizing the potential of the heat sink to the potential of one of power supply lines for a driving circuit disposed on the control board and a temperature fuse mechanism disposed on the control board. In consequence, static electricity generated in the heat sink can be made to flow to the circuit side and thereby the static electricity voltage is prevented from increasing. Therefore, temperature protection to cut off a circuit when temperature rises because of the heat from an electronic component (FET) attached to a heat sink is achieved by using only one member.
Inventors:
ANDO KOJI (JP)
HORIUCHI KAZUYOSHI (JP)
ARAI KANTA (JP)
HORIUCHI KAZUYOSHI (JP)
ARAI KANTA (JP)
Application Number:
PCT/JP1999/001970
Publication Date:
April 06, 2000
Filing Date:
April 14, 1999
Export Citation:
Assignee:
ZEXEL CORP (JP)
ANDO KOJI (JP)
HORIUCHI KAZUYOSHI (JP)
ARAI KANTA (JP)
ANDO KOJI (JP)
HORIUCHI KAZUYOSHI (JP)
ARAI KANTA (JP)
International Classes:
H02K29/00; H02K11/00; H01H37/76; H02K11/04; (IPC1-7): H02K29/00
Foreign References:
| JPH09134654A | 1997-05-20 | |||
| JPS63178052U | 1988-11-17 | |||
| JPS4883333U | 1973-10-11 | |||
| JPH07245375A | 1995-09-19 | |||
| JPH10201210A | 1998-07-31 |
Other References:
See also references of EP 1120888A4
Attorney, Agent or Firm:
Onuki, Kazuyasu (Shibuya 1-chome Shibuya-ku Tokyo, JP)
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