Sliding door with roller bottom - roller eject and tip system as cam and rollers for intermediate setting

摘要

The door is moved by a system which ejects and tips the roller (12) round its axis which is further from the fastener (6) than is the second roller (13). A lever swivelled cam (20) swings round 180 deg. between reversal points which lie on a straight line (24) just out of the vertical, on both sides of the top dead centre point. When the door is shut, the rollers should sit in a recess in their rail, only rising out of this in the intermediate setting, for which purpose a rod (28) links the cam to a strap (30) mounting an ejector roller (32), and the connecting rod (28) mounts a co-planar strap (36) and fitted lifting roller (38). With the cam between its two reversal points, the strap engages the lifting roller, and the ejector roller strikes the door leaf (4).