Title:
Rotary actuator
Document Type and Number:
Japanese Patent JP6022757
Kind Code:
B2
Abstract:
A rotary actuator comprises a cylinder (12) installed within a case (11), an output shaft (13) installed in a hollow space within the cylinder (12) and a pair of pistons (14a,14b) extend in an arc and supported so as to be able to slide and be displaced along a circumferential direction of the cylinder (12) within the cylinder. The pair of pistons (14a,14b) is able to urge an arm (15) integrated with the output shaft (13) from two sides of the arm (15). Pressure chambers (26a,26b) into which a pressure medium is introduced are defined between the cylinder (12) and each piston (14a,14b) in the pair of pistons. The pressure medium is fed to one of the pressure chambers (26a;26b) and drained from the other (26b;26a), and thus the arm (15) is displaced, and the output shaft (13) pivots in a rotational direction.
Inventors:
Koji Ito
Takashi Koizumi
Takashi Koizumi
Application Number:
JP2011238213A
Publication Date:
November 09, 2016
Filing Date:
October 31, 2011
Export Citation:
Assignee:
Nabtesco Co., Ltd.
International Classes:
F15B15/08; F15B15/12
Domestic Patent References:
| JP5017206U | ||||
| JP64006504A | ||||
| JP46020567Y1 |
Foreign References:
| DE871557C1 |
Attorney, Agent or Firm:
Hirohito Katsunuma
Yukihiro Hotta
Takuhisa Murata
Yukihiro Hotta
Takuhisa Murata
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