| 摘要 |
A semiautomatic sliding door device comprising a sliding door, an outer framework slidably supporting the door for movement between the positions of 'open' and 'closed' and a driving device comprising a tension spring energizing the sliding door toward the 'closed' position, a connecting wire, and a guide wheel for guiding the wire. This device is equipped with a braking device comprising permanent magnets on the outer framework and a braking plate made of copper or aluminum sheets on the sliding door. Coiling said wire around the block in proper manner, the length of elongation of the tension spring can be reduced relative to the stroke of the sliding door. |
