| 摘要 |
Side frames (10) are interconnected by front and rear linkages comprising arms (34) which fold about generally vertical axes (36, 40) so that the side frames (10) can be moved towards and away from one another to collapse or erect the chair. The arms (34) are connected to centrally located brackets (38) which are connected together by a rod (42) for coordinated movement. A holding device is provided which has an over centre action in order to releasably hold the arms (34) in the straight line position and thereby securely maintain the chair erected until it is to be collapsed. <IMAGE> |
