| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable transmission in the middle of a transmission cable by respectively connecting a reception part and a transmission part provided with a conversion circuit to a wireless equipment or an infrared equipment to first and second cables which are divided into a shaft of a drum and a bearing part of a frame part opposite to each other to prevent the transmission cable from being twisted or damaged. SOLUTION: A transmission part mounted on one end of a first cable 6 is fitted to a first fitting hole 5 pierced through a bearing part 4. The transmission part A is provided with a wireless transmission conversion circuit and a transmission antenna. A second fitting hole 15 is formed in a shaft part 13 in a concentric manner with the first fitting hole 5. A reception part B connected to a second cable 17 is fitted to the second fitting hole 15 concentric with the transmission part A opposite to the position close thereto so as to regulate the approaching distance. Even when a drum 10 for a transmission cable is turned at the bearing part 4, the reception part B and the transmission part A can be arranged opposite to each other because they are attached as a pair opposite to a shaft part 13 and the bearing part 4 of a frame part 2.</p> |
