| 摘要 |
<p>PURPOSE:To make it safe, easy and secure to take a CRT unit in and out of housing by electrically driving a drawing mechanism for the CRT unit. CONSTITUTION:Cathode-ray tube CRT unit 2 is provided with rack gear 5, and display device housing 1 is also provided with driver 6 with a motor, driving gear 7 engaging with gear 5 in one body with driver 6, driving switch SW8 for controlling driver 6, and handle 9. To draw CRT2 out of housing 1, the continuous pushing of SW8 at the drawing side by gripping handle 9 with the hand rotates gear 5 through the operation of driver 6 to pull up gear 7 and CRT2 is drawn forward. When CRT2 is installed in housing 1, the continuous pushing of switch SW8 at the installation side installs it through the reverse operation of driver 6. Then, CRT unit 2 has a limit switch and the circuit of driver 6 is closed simultaneously with the completion of the drawing or installing operation, performing safe operation. When the hand is taken off SW8 in the drawing operation, a braking mechanism operates to stop the unit at the position.</p> |
