| 摘要 |
PROBLEM TO BE SOLVED: To precisely hold a plurality of kinds of tire wheels different in rim diameter and rim width by strongly constructing the whole of a chuck in a compact form to be fitted inside the tire wheel. SOLUTION: The chuck main body 1 is formed with dimensions to be fitted inside the tire wheel W. The chuck main body 1 is provided with a stopper 5a positioning the axle mounting part Wc in the axial direction of the chuck, a centering claw 10 for centering the center hole Wb, a piston 13 for opening and closing the centering claw 10, a pin 17 for positioning the tire wheel W in the circumferential direction of the chuck, a piston 19 for inserting and removing the pin 17 in and from the existing prepared hole Wf, a clamp claw 24 for clamping the inner surface of the rim part Wg, and a piston 29 for opening and closing the clamp claw 24. The clamp claw 24 is replaceably fitted to the tip of a lever 25 rockable in the radial direction of the chuck, and the middle part of the lever 25 is connected to a rod 30 of the piston 29.
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