Title:
FRICTION FASTENING DEVICE
Document Type and Number:
Japanese Patent JP2019190640
Kind Code:
A
Abstract:
To provide a friction fastening device capable of securing increase in pressing force of a polymer actuator whose displacement is made large but pressing force is made small, reducing drive resistance, and attaining both weight saving and compactification.SOLUTION: A friction fastening device comprises a plurality of friction plates 101a, 101b provided between a drum 41 and a hub 42 and alternately engaging with the drum and the hub, and a piston 102 having a pressing unit 102a that presses the plurality of friction plates to fasten them together. Between the drum and the piston, a polymer actuator 103 is provided for imparting axial pressing force to the piston. A power transmission unit 113 is provided for transmitting power to the hub by a radial displacement caused by an axial displacement of the polymer actuator.SELECTED DRAWING: Figure 2
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Inventors:
UEDA KAZUHIKO
Application Number:
JP2018087473A
Publication Date:
October 31, 2019
Filing Date:
April 27, 2018
Export Citation:
Assignee:
MAZDA MOTOR
International Classes:
F16D28/00; F16D11/00
Domestic Patent References:
| JP2018173142A | 2018-11-08 | |||
| JP2005155871A | 2005-06-16 | |||
| JP2004060746A | 2004-02-26 |
Attorney, Agent or Firm:
Takuji Yamada
Mikio Tanaka
Mikio Tanaka