Title:
電磁ブレーキ装置内蔵型モータ
Document Type and Number:
Japanese Patent JP4845881
Kind Code:
B2
Abstract:
An electromagnetic brake device (3) is assembled to a rear end section of a small-sized motor (1). The electromagnetic brake device (3) has a rotating disc (11) fixed to a motor rotation shaft (4), a sliding disc (12) slidable in an axial direction, a coil spring (13) pressing the sliding disc (12) to the rotating disc (11), and an electromagnet (14) capable of attracting the sliding disc (12) against spring force. A circular recess (16e) is formed in the center of a rear end surface of a yoke (16) of the electromagnet (14). In a state where the electromagnetic brake device (3) is assembled, a bearing (6) supporting a rear end shaft section (4b) of the motor rotation shaft is received in the circular recess (16e). As a consequence, no large circular dead space is produced at a portion on the outer periphery side of the bearing (6), which portion is between a motor end plate (5) and a rear end surface of the electromagnetic brake device (3). As a result, the length of the shaft of the small-sized motor (1) is suppressed from increasing.
Inventors:
Toshiyuki Abe
Kiyoto Kobayashi
Kiyoto Kobayashi
Application Number:
JP2007514390A
Publication Date:
December 28, 2011
Filing Date:
April 22, 2005
Export Citation:
Assignee:
Harmonic Drive Systems Inc.
International Classes:
H02P3/04; F16D55/28; F16D65/14; F16D65/18; F16D65/22
Domestic Patent References:
| JPH0949536A | 1997-02-18 | |||
| JPS6219056A | 1987-01-27 | |||
| JP2005090567A | 2005-04-07 |
Foreign References:
| WO1985002952A1 | 1985-07-04 |
Attorney, Agent or Firm:
Shiro Yokozawa