Chain for tire

A tire slipping prevention apparatus, comprising:

• a wire having separable coupling means connected at both ends of the wire at an inner side of a tire for thereby forming a circle shape having a diameter smaller than an outer diameter of the tire;
• a plurality of friction members each having one end connected to the wire at a regular distance and extended from the wire across a grounding surface of the tire to an outer side of the tire and arranged along the grounding surface of the tire at the regular distance;
• a pulling apparatus installed in a center portion of an outer surface of the tire and formed of a handle extended in a radial direction from the center portion, a straight line movement conversion mechanism for converting a moment applied to the handle into a tensile force in a center direction and applying the tensile force to the other end of the friction member, and reverse rotation prevention means for preventing a reverse rotation of the straight line movement conversion mechanism;
• and
• a plurality of pulling bars each having a first end and a second end, each of said first end and said second end engaged with a different end of said friction members and a center portion connected with the straight line movement conversion mechanism of the pulling apparatus and separably connecting the friction members with the straight line movement conversion mechanism by two;
• wherein the straight line movement conversion mechanism pulls each of said friction members in the direction of the center of the tire using the pulling bars and prevents reverse rotation by the reverse rotation prevention means, so that each friction member is stably fixed to the tire based on a close contact.