| 摘要 |
A rotary actuator includes a piston housing assembly including a cavity, a fluid port in cavity, and an open end. A rotor assembly is rotatably journaled in the piston housing assembly and includes a rotary output shaft, a rotor arm extending radially outward from the rotary output shaft, an arcuate-shaped piston disposed in said piston housing assembly for reciprocal movement in the piston housing assembly through the open end along a radius of curvature. A seal, the cavity, and the piston define a pressure chamber, and a portion of the piston connects to the rotor arm at an end portion. |
| 主权项 |
1. A rotary actuator comprising:
a first piston housing assembly comprising a first cavity, a first fluid port in fluid communication with the first cavity, and a first open end; a second piston housing assembly comprising a second cavity, a second fluid port in fluid communication with the second cavity, and a second open end; a rotor assembly rotatably journaled in said first piston housing assembly and said second piston housing assembly, and comprising:
a rotary output shaft;a first rotor arm extending radially outward from the rotary output shaft to a first distal end comprising one or more first retainers;a second rotor arm extending radially outward from the rotary output shaft to a second distal end comprising one or more second retainers;an arcuate-shaped first piston disposed in said first piston housing assembly for reciprocal movement in the first piston housing assembly through the first open end along a first radius of curvature, wherein a first seal, the first cavity, and the first piston define a first pressure chamber, and a first portion of the first piston connects to the first rotor arm at a first end portion comprising one or more third retainers; andan arcuate-shaped second piston disposed in said second piston housing assembly for reciprocal movement in the second piston housing assembly through the second open end along a second radius of curvature, wherein a second seal, the second cavity, and the second piston define a second pressure chamber, and a second portion of the second piston connects to the second rotor arm at a second end portion comprising one or more fourth retainers; wherein the first retainers, the second retainers, the third retainers, and the fourth retainers are intermeshed along the radius of curvature such that movement of the rotor assembly urges movement of the first piston and the second piston, and movement of the first piston and the second piston urges movement of the rotor assembly. |
