| 摘要 |
A non return block ( 5 ) for locking a tensioning terminal portion ( 7 ) of snow chains ( 2 ), comprising a body ( 51 ) which defines a channel ( 12 ) in which the terminal portion ( 7 ) passes and a ratchet or a pawl ( 13 ) pivoted on the body ( 51 ) to lock the terminal portion ( 7 ) is described. The non-return block comprises at least one insert ( 62, 63 ) of soft material fixed to the body ( 51 ) of the non-return block so as to protrude laterally therefrom to come into contact with the rim ( 8 ) of the wheel of the vehicle, avoiding deterioration thereof through rubbing. |
