| 摘要 |
An electrical connecting device is provided between a steering wheel of a vehicle and a steering column. The device includes a housing 1 and a rotor 2 rotatably arranged in the housing 1, defining an annular cable accommodating chamber 4 between the rotor 2 and the housing 1. A flexible flat cable 5 is accommodated in the cable accommodating chamber 4. The end portion of the cable 5 is wound along an inner peripheral face 4a of the chamber 4, while the other end portion of the cable 5 is wound along an outer peripheral face 4b. On an upper face 4c in the chamber 4, an inside projection 15 is formed so as to project downward on the inner peripheral side of the chamber 4, while an outside projection 16 is formed on the outer peripheral side of the chamber 4. The amount of projection of the inside projection 15 is smaller than the amount of projection of the outside projection 16.
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