| 摘要 |
At least one roller (1) has threaded pins (2,11) screwed transversely into the frame or casement/leaf. At least a first threaded pin (2), for adjusting the fitment, is rotarily and axially immovable in the roller. At least one second threaded pin (11) supports the roller when screwed in, and has its screwed-in threaded part (3) movable axially and freely through the transverse hole (8) in the roller. The rear end of the second threaded pin has a head (12) of larger diameter than the screw-in threaded part. The head of the second threaded pin has an outer thread (4) possessing the same pitch as the screw-in threaded part. At least one part of the transverse hole has an inner thread (5) matching the head's outer thread. |
