| 摘要 |
ovel mechanism for automatically blocking and unblocking the sheaves of awnings, which mechanism is placed and fixed on aluminium and steel pipes with no perforations or cuts thereon, by means of the accessories located at one end (7,8,9,10,26) (fig.3) and the incorporated distal connector (14) situated at the other end of said mechanism. The accessories (1,2) with the spring (16) alike are adequately placed into a specially-shaped wedge way 919) to automatically block and unblock the awning by the relative influence of the awning sheave (23). The advantage of said invention is that the awning, being furnished with the invented mechanism, can operate at whatever inclined position, and predominantly be prevented from being blocked anew, throughout unblocking process, when the sheave of the awning (23) descents until the stop (5) to release the accessory (1) falling into the wedge way (19). |
