| 摘要 |
<p>PURPOSE:To reduce the hysteresis of a characteristic of a turning angle, simplify the assebly and contrive the motor to be made small by a method wherein a torsion bar is used as a spring for return and a shaft is made hollow to allow the torsion bar to be disposed in the shaft. CONSTITUTION:The hollow shaft 4 is held by two bearings 8, 9, and the one bearing 8 is inserted in a housing 1 and the other bearing 9 is inserted to an end plate 17. The torsion bar 20 composed of stainless wires is inserted in the shaft 4, the one end thereof is inserted in a hole 21a of a first holder 21 and fixed by driving the 1st holder 21 in a spring holder 19. Further, the other end of the torsion bar 20 is inserted in a second holder 22 in the same shape as the first holder 21 and the same is driven in the shaft 4 to be fixed. Thereby, the hysteresis of the turning angle characteristic can be reduced, and the motor can easily be assembled and made small.</p> |
