| 摘要 |
<p>PURPOSE:To avoid the breakage of a cable when the rotating direction of a rotary contact mechanism in which electrical continuity is provided by a ring rail and a contactor is changed. CONSTITUTION:An apparatus main part 3 is placed on a base part 2. The rotary contact mechanism of the apparatus is composed of a circular protrusion (or recess) 20 formed on the upper surface of the base part 2, a circular recess (or protrusion) 30 which is formed on the lower surface of the apparatus main part 3 and mated coaxially with the protrusion (or recess) 20 on the upper surface of the base part 2 so as to rotate smoothly, at least one ring-shaped first rail part 8 which is made of conductive material and provided on the upper surface of the base part 2 or on the lower surface of the apparatus main part 3 so as to be coaxial with the protrusion (or recess) 20 and at least one first contactor 9 which is provided on the lower surface of the apparatus main part 3 or on the upper surface of the base part 2 and is brought into electrical contact with a part of the first rail 8. The first contactor 9 or the first rail part 8 on the lower surface of the apparatus main part 3 is electrically continuous with the internal circuit of the apparatus main part 3. A cable 4 which is introduced from the outside onto the upper surface of the base part 2 is electrically connected to the first rail part 8 or the first contactor 9.</p> |
