Patent ID: 9016699
Filing Date: 2015-04-28
Classification: B23B,Y10S,Y10T

Abstract:
1. A chuck device in which a rotary sleeve provided to a main body is rotated, and the rotation of an annular rotary body which rotates together with the rotary sleeve causes jaws screwed together with said annular rotary body to expand, contract, advance, and retract, and causes a tool to be gripped by the jaws; said chuck device comprising: wherein the retaining engaging body is provided so as to be fixed to a proximal end side of said rotary sleeve; the rotation of said rotary sleeve is transmitted to said annular rotary body via said retaining engaging body and said middle sleeve body, and said annular rotary body rotates together with said rotary sleeve; and said retaining engaging body is provided with a co-rotation fitting part as said rotation transmission part, for fitting with a recessed part or projected part provided to said middle sleeve body in a fixed manner.