Title:
MOTOR
Document Type and Number:
WIPO Patent Application WO/2017/150487
Kind Code:
A1
Abstract:
電動式のモータであって、シャフトと、ロータマグネットと、ロータマグネットよりも軸方向上側に位置するセンサヨークと、センサヨークに支持されるセンサマグネットと、トルクを外部に伝達する歯車部を有する入力ギアと、を有するロータ部と、ロータマグネットの径方向外側に位置する電機子と、ロータ部を回転可能に支持する軸受機構と、電機子、ロータ部、および軸受機構を覆うハウジングと、センサマグネットと対向し、ロータ部の回転を検知する回転検出センサと、を備える。
An electric motor provided with: a rotor part having a shaft, a rotor magnet, a sensor yoke positioned axially upward from the rotor magnet, a sensor magnet supported by the sensor yoke, and an input gear having a gear part for transmitting torque to outside; an armature positioned radially outward of the rotor magnet; a bearing mechanism for rotatably supporting the rotor part; a housing for covering the armature, the rotor part, and the bearing mechanism; and a rotary detection sensor facing the sensor magnet, the rotary detection sensor detecting rotation of the rotor part. The housing has a bottom part, and includes a housing main unit that supports the armature, and a bearing holder that supports a first bearing. The rotary detection sensor is arranged on the upper part of the bearing holder. The shaft has a top surface positioned axially upward and radially inward from the gear part, and has an exposed part that is exposed in regions axially downward from the gear part, and axially upward from the senor yoke.
Inventors:
FUKUNAGA KEISUKE (JP)
Application Number:
PCT/JP2017/007624
Publication Date:
September 08, 2017
Filing Date:
February 28, 2017
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
H02K29/08; H02K7/116; H02K15/16
Foreign References:
| JP2006174526A | 2006-06-29 | |||
| JP2015142446A | 2015-08-03 | |||
| US20080022783A1 | 2008-01-31 | |||
| JPH08275483A | 1996-10-18 | |||
| JP2012253846A | 2012-12-20 |
Attorney, Agent or Firm:
KITAMURA,Hideaki (JP)
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