초록 ▼

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 gu

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.

대표청구항 ▼

A semiautomatic sliding door device with a tension spring comprising: a sliding door, a frame structure for slidably guiding the door between the open position and closed position of the door, a coiled tension spring carried by one of two elements consisting of the sliding door and the frame structu

A semiautomatic sliding door device with a tension spring comprising: a sliding door, a frame structure for slidably guiding the door between the open position and closed position of the door, a coiled tension spring carried by one of two elements consisting of the sliding door and the frame structure for urging the door toward the closed position, the spring having its one end fixed to said one of the two elements and its other end connected through a wire to the other of the two elements, guide means carried at least by said one of the two elements for guiding the wire, and braking means comprising a braking plate of copper or aluminum fixed to the sliding door and a braking magnet unit fixed to the upper frame of the frame structure and having a pair of magnetic surfaces opposed to each other with a clearance and provided by one or two permanent magnets, the magnetic surfaces having an identical row of plural magnetic poles alternately inversely magnetized, every pair of opposed magnetic poles on the magnetic surfaces having opposite polarities, and the braking plate being adapted to pass through the clearance adjacent the closed position of the sliding door.