FIELD: machine building.
SUBSTANCE: rotary actuator (10) is provided with linear drive mechanism (40a), configured to provide rotary motion of gear (80), and cylinder body (12) in which cylinder bore (28a) is formed. Linear drive mechanism (40a) includes toothed rack (42) provided with plurality of teeth (44) adapted to engage gear (80) and piston (48a, 48b). Piston (48a, 48b) includes piston body (50a, 50b) having a shape corresponding to cylinder hole (28a). Piston body (50a, 50b) includes main portion (52a, 52b) and protruding portion (54a, 54b). Both ends of toothed rack (42) are connected to protruding sections (54a, 54b) of a pair of pistons (48a, 48b), and between main sections (52a, 52b) of a pair of pistons (48a, 48b) there is compartment (73a), sealed relative to hole (28a) cylinder.
EFFECT: reducing dimensions.
6 cl, 7 dwg
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