Patent ID: 9464964
Filing Date: 2016-10-11
CPC Classification: G01M,Y10T

Claim Text:
1. A rim exchange device in a tire balance measurement apparatus for driving and rotating upper and lower rims nipping a tire by a spindle coupled to the lower rim and measuring dynamic balance of the tire, the rim exchange device comprising: a coupling having an automatic alignment function; and a chuck mechanism, wherein the coupling has an upper side coupling coaxially coupled and fixed to the lower rim, and a lower side coupling coaxially coupled and fixed to the spindle, the upper side coupling is meshed with the lower side coupling, and the chuck mechanism prevents upward separation of the lower rim from the spindle; wherein the chuck mechanism has a lock member provided in the lower rim, and an engagement member provided on the spindle side and engaged with the lock member; and wherein the lock member and engagement member are positioned on an outer peripheral side of the coupling.