| 摘要 |
A coupling structure of a grinding holder of a hand grinder is provided to easily attach/detach a grinding holder without a tool by installing a chuck to the front of a holder joining tool and allowing a locking ball to exert coupling force. A coupling structure of a grinding holder of a hand grinder comprises a grinder main body(10) having a rotation shaft(11) protruded in one side; a plurality of chucks(23) clamped and spread to the radial direction, whose one side is attached to the rotation shaft; a holder coupler(20) having a penetration space(25) inside; a grinding holder(30) whose one side is equipped with an abrasive(31) and the other is detachable fitted inside the penetration space; an elastic member giving rebound force to the grinding holder; and a movable sleeve(50) holding the grinding holder by being biased elastically toward the chuck and thus pushing the chuck to the radial direction. |
