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Patent Searching and Data


Title:
BRAKE DEVICE AND ELEVATOR DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/255284
Kind Code:
A1
Abstract:
A brake device 20 comprises: a brake shoe 27a that has a brake pad 27b capable of being in sliding contact with a brake drum 14; an armature 24 to which the brake shoe 27a is fixed; a core 21 that faces the surface opposite to the surface of the armature 24 in contact with the brake shoe 27a; an electromagnetic coil 22 that is disposed inside the core 21 and that generates an electromagnetic force to attract the armature 24; and a biasing member 23 that applies a force in a direction to separate the armature 24 from the core 21. Furthermore, the brake device 20 comprises a contact assist member (fastening bolt 29) that engages with the armature 24 and the brake shoe 27a and that causes the center portions of the contact surfaces of the armature 24 and the brake shoe 27a to be in contact.

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JP2007062900ELEVATOR SYSTEM
WO/2004/096691ELEVATOR
Inventors:
SERIZAWA RYOSUKE (JP)
IGARASHI AKITOMO (JP)
Application Number:
PCT/JP2019/024222
Publication Date:
December 24, 2020
Filing Date:
June 19, 2019
Export Citation:
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Assignee:
HITACHI LTD (JP)
International Classes:
B66B11/08
Foreign References:
JP6194204B22017-09-06
JP2002266906A2002-09-18
JP2000289954A2000-10-17
CN204677653U2015-09-30
Attorney, Agent or Firm:
SHIN-YU INTERNATIONAL PATENT FIRM (JP)
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