| 摘要 |
PURPOSE:To make exclusive bearing loading device unnecessary and secure the bearing between both plates by providing on a sliding metal frame the mechanism performing the setting and release of the bearing in the space between the plate supported on the sliding metal frame and the plate sliding therewith. CONSTITUTION:When a sliding metal frame 3 is moved in the right direction by a driving device, the inclined face 22 of a flange part 21 is slipped into the lower face of a cotter 16 and the level of the locking point of the inclined face 22 to the cotter 16 is ascended. A bearing holder 14 is ascended against the energizing force of a compression coil spring 10 via the cotter 16 and the elastic resiliency of the spring 10 loads the action force in the direction pushing a pressing block 13 down to the lower part. Since the block 13 is engaged with the hook 25 fitted to a fixed metal frame 1 it energizes an opening and closing metal frame 2 in the fixed metal frame 1 direction, energizing the sliding metal frame 3 supported by the opening and closing metal frame 2 to the fixed metal frame 1 side. In this way a bearing is loaded on the sliding face of be tween the lower part plate 7 integrated to the sliding metal frame 3 and the upper part fixed plate 6. |
