| 摘要 |
PURPOSE:To absorb a shock produced at the time of coupling an armature to a rotor by connecting the armature to which driving force from the rotor is transmitted and a coupling member with spring members adapted to elastically displace in the rotating directions of the armature and the coupling member. CONSTITUTION:When an electric current is applied to an exciting coil 10, a magnetic circuit is formed among a field core 11, a rotor 5 and an armature 2, and the armature 2 is attracted to the rotor 5 against a releasing plate spring 1. Therefore, the turning force from a shaft 6 is transmitted through the rotor 5 to the armature 2, and further transmitted from the armature 2 through the releasing plate spring 1 to a coupling plate 3. In this case, a shock produced by coupling the armature 2 to the rotor 5 is absorbed by a rivet 7 for fixing the coupling plate 3 and the releasing plate spring 1 and by a buffer spring 9 interposed between the coupling plate 3 and a sliding dowel 8 slidably retaining the releasing plate spring 1, to prevent a shock from being transmitted to the coupling plate 3. |
