| 摘要 |
The invention concerns both the production and use of removable anti-slip motor vehicle accessories. Anti-slip means linked and/or connected by chain (5) (6) (7) (9) (10) (11) (55) (70) (71) (72) (73) (74) (75) (76) (77) vary between a plurality of configurations at the periphery of a tyre (2) according to two counteracting forces. One of said forces is due to the resistance of said means to the reversible deformation (75) (76) (77) of same, or to that of an associated element (10) (70), and the other to that of a straight spring (18) or coiled spring (32) inside a substantially annular coaxial chamber (13) of the tyre. A tensioning cable (12) passes from one face of the tyre to the other via internal conduits (8) and external conduits (14) having bars (7) crossing the tread, forming two main symmetrical loops A and B, linking the anti-slip means to the chamber (13), enabling the device to be clamped to the rear face of the tyre by acting only on the front face of same. During fitting onto the tyre, the device (1) is contracted and is extended by pulling a tensioning cable (12) which is tensioned by a mechanism actuated manually (21) (22) (23) (33) (34) (35) (42) (43) (64) (79), or automatically (37) (38) (39) (40) (41 ) (65) (66) (67) (68) (69), so as to bear on the ground at the limits of the support polygon (4) of the tyre (2).
|
