| 摘要 |
The invention relates to a tent- or wall-type shading device with scissors-like arms which uses the same system of arms to guide and to stretch the sun-blind, the only difference between them consisting in the supporting structure on which it is applied. According to the invention, the shading device has a number of parallel scissors-like arm mechanisms (), determined by the length of the surface to be covered and by a sun-blind driving mechanism () with the role of protection and connection with the arm mechanism (), which acts as a mechanism consisting of some elements () connected by some joints () made of teflon bearing boxes, the first two elements () being mounted on the pillar () or on the wall by means of some cantilever hinges, the external ends of the last arm elements () being connected to one another by a longitudinal profile which increases the weight force at the arm extremity upon deploying or folding the sun-blind and which, by rolling, lifts or releases the arms on the said side of the shading device, where each arm forms a quadrangle of constant sides and variable angles defined by the elements () and the joints (), the shading device using the weight of its own arms to stretch the sun-blind and maintain it in the deployed position. |
