Chuck device

摘要

A chuck device in which a rotary sleeve provided to a main body is rotated, and by rotation of an annular rotary body which rotates together with the rotary sleeve, jaws screwed together with the rotary body are expanded, contracted, advanced, and retracted, and a tool is gripped by the jaws; the chuck device comprising a retaining engaging body for engaging with the rotary body and preventing the rotary sleeve from coming out of the rotary body; wherein the retaining engaging body is provided to be fixed to a proximal end side of the rotary sleeve; a rotation transmission part for directly or indirectly transmitting the rotation of the rotary sleeve to the rotary body is provided to the retaining engaging body; and the rotation of the rotary sleeve is transmitted to the rotary body via the retaining engaging body, and the rotary body rotates together with the rotary sleeve.

主权项

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:
a retaining engaging body for engaging with said annular rotary body or said main body and preventing said rotary sleeve from coming out of said annular rotary body or said main body;a middle sleeve body for fitting with said annular rotary body provided on the inside of said rotary sleeve; anda rotation transmission part for transmitting the rotation of said rotary sleeve to said rotary body via said middle sleeve body provided to said retaining engaging body, 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.