Title:
BRAKING DEVICE FOR ELEVATOR HOISTING MACHINE
Document Type and Number:
WIPO Patent Application WO2017009918
Kind Code:
A1
Abstract:
The purpose of the present invention is to reduce collision noise by, when a brake lining (131) hits a brake drum (10), dividing the braking force and shifting the timing at which the braking force is applied. This braking device for an elevator hoisting machine according to the present invention is provided with: the brake drum (10) linked to the elevator hoisting machine; a brake part (13) that applies a brake on the brake drum (10); a first movable iron core (14) that is linked to the brake part (13) and that is moved in directions for making contact with and separating from the brake drum (10); a first urging part that restricts movement of the first movable iron core (14) in a direction for pressing the brake part (13) against the brake drum (10); a second movable iron core (18) that urges the first movable iron core (14) in a direction for pressing the brake part (13) against the brake drum (10); and a second urging part that restricts movement of the second movable iron core (18) in a direction for pressing the brake part (13) against the brake drum (10). The timing at which the movement of the second movable iron core (18) is restricted by the second urging part is set so as to be after the timing at which the movement of the first movable iron core (14) is restricted by the first urging part.
Inventors:
SUZUKI NOBUYA (JP)
Application Number:
PCT/JP2015/069998
Publication Date:
January 19, 2017
Filing Date:
July 13, 2015
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
B66B11/08; F16D51/12
Foreign References:
| JP2003002568A | 2003-01-08 | |||
| JP2013018646A | 2013-01-31 | |||
| JP2006306517A | 2006-11-09 | |||
| JP2012188176A | 2012-10-04 |
Attorney, Agent or Firm:
INABA, Tadahiko et al. (JP)
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