Title:
【発明の名称】エレベータ
Document Type and Number:
Japanese Patent JPH0735829
Kind Code:
B2
Abstract:
An electromagnetic disc brake for an elevator lifting apparatus comprises a disc spline-coupled with a rotational shaft. Braking body and an armature disposed to clamp the disc; braking springs press the armature against the disc, and an iron core is provided which includes inner and outer magnetic poles each facing the armature and concentrically formed with respect to the rotational shaft. An electromagnetic coil generates magnetic flux to pass through the inner and outer magnetic poles as magnetic paths. In addition, at least one of the pole face of the outer magnetic pole and the facing portion of the armature where it faces the pole face is provided with an arrangement for increasing a magnetic gap, and the braking springs are disposed in portions of the outer magnetic pole. Further, the braking body is supported through a sound absorbing member or one side of the armature facing the disc is formed of a sound absorbing member.
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Inventors:
Masakatsu Tanaka
Masanobu Ito
Toshihiko Nara
Tatsuhiko Takahashi
Masanobu Ito
Toshihiko Nara
Tatsuhiko Takahashi
Application Number:
JP21135089A
Publication Date:
April 19, 1995
Filing Date:
August 18, 1989
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
B66B11/04; B66B11/08; B66D5/14; B66D5/30; F16D55/28; F16D59/02; F16D65/14; F16D65/18; F16D65/22; H01F7/16; F16D55/00; (IPC1-7): F16D55/28; B66B11/08
Domestic Patent References:
| JP5395085U | ||||
| JP58137135U | ||||
| JP5891029U | ||||
| JP1119937U | ||||
| JP57194942U | ||||
| JP6218436U |
Attorney, Agent or Firm:
Katsuo Ogawa (2 outside)
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