| 摘要 |
PURPOSE:To prevent the top end part of an arm part from floating at the time of high speed rotation by providing a reinforcing member on flat type arm parts whose top end parts bent inside in the vehicle width direction in brought in contact with the face of tyre in contact with a road. CONSTITUTION:The tyre skidproof device main body 12 of a tyre skidproof device 10 is provided with a boss 14 and eight pieces of arms 16 both of which are made of synthetic resin, and eight pieces of the arms 16 are fixed around the disc part 18 of the boss 14 radially at equal intervals in the radius direction by means of pins 24 and each middle par 16B is bent and each top end part 16c is extended in the direction of the axial line of the boss 14. This arm 16 is provided with a plural number of spike pins 28 on a face 16D, in contact with a road, of the top end part 16C and also projecting bodies 30 on a face 16E in contact with the tyre reinforcing members 32 are buried therein to attempt the improvement of rigidity. Consequently, even at the time of high speed rotation, it is possible to prevent the top end part of an arm part from floating. |
