Patent ID: 7038139
Filing Date: 2006-05-02
Classification: B60R,H01R

Abstract:
1. A spiral cable device comprising: a cylindrical casing; an inner cylinder provided to be rotatable relative to the cylindrical casing within the same; and a first flexible flat cable and a second flexible flat cable each connected to the inner cylinder at one end thereof for being wound around the same and to the cylindrical casing at the other end thereof and having plural leads coated to be isolated electrically, wherein, each of the first flexible flat cable and second flexible flat cable have has the leads arranged in a single layer, the respective flexible flat cables, are placed to form multiple layers of the leads in the radial direction of the cylindrical casing, and the leads arranged in the single layer of the first flexible flat cable are provided for supplying electric power to drive an actuator, while the leads arranged in the single layer of the second flexible cable are provided for transmitting control signals, a cross-sectional area of respective leads in the first flexible flat cable is larger than that of the respective leads for the second flexible flat cable.