Anti-skid device for tires

An anti-skid device for tires, the anti-skid device comprising two or more elementary units, each of the two or more elementary units comprising:

• a first main body comprising a first U-shaped portion located from an inside sidewall part of a tire fitted therein with a wheel for vehicles to an outside sidewall part of the tire across a tread part of the tire, an inside front extending portion merging into the first U-shaped portion at the inside sidewall part side and extending in a frontward circumferential direction of the tire, and an outside rear extending portion merging into the first U-shaped portion at the outside sidewall part side and extending in a rearward circumferential direction of the tire;
• a first inside front connector provided pivotally at the inside front extending portion of the first main body;
• a first outside rear connector provided pivotally at the outside rear extending portion of the first main body;
• a second main body located at a frontward circumferential direction side of the first main body, the second main body comprising a second U-shaped portion located from the inside sidewall part to the outside sidewall part across the tread part, an inside rear extending portion merging into the second U-shaped portion at the inside sidewall part side and extending in a rearward circumferential direction of the tire, and an outside front extending portion merging into the second U-shaped portion at the outside sidewall part side and extending in a frontward circumferential direction of the tire;
• a second inside rear connector provided pivotally at the inside rear extending portion of the second main body;
• and
• a second outside front connector provided pivotally at the outside front extending portion of the second main body,
• the first inside front connector and the second inside rear connector being connected with each other to form each of the two or more elementary units,
• each of the two or more elementary units further comprising:
• a first outside contact member covering at least a part of the first outside rear connector while being capable of contacting the outside sidewall part;
• and
• a second outside contact member covering at least a part of the second outside front connector while being capable of contacting the outside sidewall part.