| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an electromagnetic actuator for driving a radar which improves ruggedness of the apparatus by suppressing falling down of a fulcrum shaft and making loss torque of the bearing part small. <P>SOLUTION: A reflective mirror 1 and a fulcrum shaft 2 are composed from respective different components, the fulcrum shaft 2 and the bearing part are placed in both sides of the reflective mirror 1, and at the same time, a convex part 1a of the reflective mirror 1 is inserted into a recess 2a of the fulcrum shaft 2, and bearing parts of the both sides are composed of ball bearing 3 of a set of two-pieces. By this means, degree of colinearity of a shaft supporting the reflective mirror 1 is improved, torque driving the reflective mirror 1 becomes small, a current flowing in coils 15a and 15b of the electromagnetic driving mechanism 8A and 8B and hysteresis by the current can be reduced, and the ruggedness of the apparatus can be improved. <P>COPYRIGHT: (C)2004,JPO</p> |
