Title:
ELECTROMAGNETIC BRAKE DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/191945
Kind Code:
A1
Abstract:
The present invention is provided with: a brake shoe 303 that is in slidable contact with a brake drum 202; an armature 302 that supports the brake shoe 303; a plurality of braking springs 313 that press the armature 302 and urge the brake shoe 303 in a braking direction; and an electromagnetic magnet body 301 that electromagnetically attracts the armature 302 in resistance to the urging force of the braking springs 313 and drives the brake shoe 303 in a direction away from the brake drum 202. The electromagnetic magnet body 301 comprises a first electromagnetic coil 311 and a second electromagnetic coil 312 that generate an electromagnetic attraction force by means of energization. The timings of current interruptions of the first electromagnetic coil 311 and the second electromagnetic coil 312 are each shifted during the current interruption from energized states.
Inventors:
SERIZAWA RYOSUKE (JP)
IGARASHI AKITOMO (JP)
IGARASHI AKITOMO (JP)
Application Number:
PCT/JP2020/012619
Publication Date:
September 30, 2021
Filing Date:
March 23, 2020
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
F16D51/10; B66B11/08; F16D59/02; F16D65/16; F16D121/22
Domestic Patent References:
| WO2020021632A1 | 2020-01-30 |
Foreign References:
| JP2016160064A | 2016-09-05 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
Download PDF:
Previous Patent: FLUID SUPPLY DEVICE, VEHICLE HEIGHT ADJUSTMENT DEVICE, SADDLE-TYPE VEHICLE
Next Patent: POWER MODULE
Next Patent: POWER MODULE