| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a device for eliminating a twisted telephone curl cord with a simple structure, excellent assembling workability at a low cost. SOLUTION: A separate plug 1 attached rotary joint is connected between a connector of a phone main body and a curl cord attached plug of a handset. The rotary joint uses an outer shell cylindrical case 4, a longitudinal insulation disk 7, and a concentric motor-driven board 8 for stator parts and employs a C-shaped cylindrical rotary case 5, a lateral motor-driven plate 9 and its support pole 10 as rotating parts. Electric wires from a phone side plug are connected to a concentric electric conduction disk fixed to a recessed groove bottom of the longitudinal insulation disk 7 having a concentric recessed groove with a required number of electrodes. Each one-end of the lateral motor-driven plate mounted on the support pole fixed to the C-shaped cylindrical rotary case capable of freely been turned on the inner face of the outer shell cylindrical case is in slide contact with each concentric electric conduction disk at a right angle and the other end is in contact with electrodes of a handset side plug 6 inserted to the joint.</p> |
