Title:
BRAKE EMPLOYING FUNCTIONAL FLUID
Document Type and Number:
Japanese Patent JP2020085232
Kind Code:
A
Abstract:
To simplify a structure of a rotary shaft type brake using a non-shear flow of a functional fluid such as an ER (electrorheological) fluid or an MR (magnetorheological) fluid, and to attain downsizing and increase of brake power.SOLUTION: A partition plate (18) is attached to a rotary disc (15) of a brake, and a fixing plate (16) is attached to an inner wall of a container. A clearance (17) is provided between the rotary disc (15) and the fixing plate (16), and a functional fluid which is pushed by the partition plate (18) when the rotary disc (15) is rotated flows in the clearance (17). An electric field or a magnetic field is applied to the clearance (17), such that flowing resistance is changed by changing viscosity of the fluid in the clearance (17) and rotation resistance of the rotary disc (15), namely, brake power is controlled. Otherwise, the fixing plate (16) may be attached to the rotary disc (15) and the partition plate (18) may be attached to the inner wall of the container. An electric field or a magnetic field is applied to a fluid in the clearance (17) between the inner wall of the container and the rotary disc (15) and fluid leakage from the clearance (17) is eliminated, thereby suppressing reduction in brake power.SELECTED DRAWING: Figure 7
Inventors:
INOUE AKIO
Application Number:
JP2018230391A
Publication Date:
June 04, 2020
Filing Date:
November 19, 2018
Export Citation:
Assignee:
ER TEC KK
International Classes:
F16D63/00; F16F9/14; F16F9/53
Domestic Patent References:
| JP2009287639A | 2009-12-10 | |||
| JP2000157585A | 2000-06-13 | |||
| JP2016140744A | 2016-08-08 | |||
| JPH09273575A | 1997-10-21 | |||
| JP2007139083A | 2007-06-07 | |||
| JP2005172096A | 2005-06-30 |
Foreign References:
| WO2017094894A1 | 2017-06-08 |