| 摘要 |
PROBLEM TO BE SOLVED: To provide a low cost, direct rotary motion solenoid that is configured to implement hundreds of millions of life cycles at a reduced power level.SOLUTION: A rotary solenoid 20 includes a core 22, a shaft 24, a rotor 23 and two end caps 28, 30. The core comprises two electromagnetic poles 35A, 35B which terminate in two respective pole faces 32A, 32B. The rotor is mounted on the shaft. The two end caps are mounted to the core with the shaft extending through the end caps for rotational motion relative to the pole faces in accordance with energization of the two electromagnetic poles. At least one and preferably both of the end caps comprise a cover member and an axial wall. The cover member has an aperture through which the shaft extends. The axial wall extends from the cover member in a direction of a shaft axis and is configured to provide a feature which aligns the two pole faces with the aperture in the cover member for self-aligning the two pole faces with an outer diameter of the rotor. |
