| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve the steering feeling of a driver while lowering the cogging torque by providing a magnetic shield plate for preventing the leakage of the magnetic flux to be generated in a clutch coil to an armature side between a housing and a brush holder. SOLUTION: A brush holder 12 for a brush 11, which abuts on a surface of a rectifier 9 fixed to one end of a shaft 7 supported by a bearing 5 and a bearing 6 freely to be rotated, is fixed by a brush holder fastening screw 13 through a magnetic shield plate 31, and a housing 14 made of aluminum as a nonmagnetic material is connected to a yoke 3 by a fastening screw 19. With this structure, since the rotating force of the shaft 7 can be transmitted to a drive rotor 24, a boss 23 and a worm shaft spline-connected to the boss 23 by fixing the drive rotor 24, which is integrated with the boss 23 by sucking and fixing a disc 25 with a magnetic circuit A to be operated by electrical continuity of a clutch coil 22, to the shaft 7, the rotating force of the shaft 7 can be supplied as an assist for the handle steering force.</p> |
