Title:
電磁ブレーキ
Document Type and Number:
Japanese Patent JP5118090
Kind Code:
B2
Abstract:
To provide an electromagnetic brake in which the exciting power capacity of a coil can be reduced.
Ones of electromagnetic coils 11a, 11b and the coil portions are disposed radially inward of the coil storage parts of yokes as holding coils 11a1, 11b1. The others of the electromagnetic coils 11a, 11b and the coil portions are disposed radially outward of the holding coils 11a1, 11b1 as acceleration coils 11a2, 11b2. The holding coils 11a1, 11b1 allow a current to flow therein from the start of braking release operation to the application of braking. The acceleration coils 11a2, 11b2 allow a current to flow therein in an acceleration period at the start of the braking release operation.
COPYRIGHT: (C)2010,JPO&INPIT
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Inventors:
Masanobu Ito
Akira Igarashi
Kiyoya Ito
Akira Igarashi
Kiyoya Ito
Application Number:
JP2009066361A
Publication Date:
January 16, 2013
Filing Date:
March 18, 2009
Export Citation:
Assignee:
株式会社日立製作所
水戸エンジニアリングサービス株式会社
水戸エンジニアリングサービス株式会社
International Classes:
F16D65/18; B66B11/08; F16D65/14; F16D65/22; F16D65/28
Domestic Patent References:
| JP57172934U | ||||
| JP2005282640A | ||||
| JP2006174616A | ||||
| JP11122697A | ||||
| JP9126256A | ||||
| JP61087234U | ||||
| JP8054032A |
Foreign References:
| WO2003031309A1 |
Attorney, Agent or Firm:
Patent Business Corporation Takewa International Patent Office