Patent ID: 11951597
Assignee: nan
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A gripping sleeve, for being restrictably and slidably sleeved on a body portion of a main body and rotatable relative to the body portion, the body portion having at least one annular groove, the gripping sleeve including:
a first sleeve, being substantially tubular and having at least one through hole;
at least one restricting member, received in the through hole;
a second sleeve, sleeved on the first sleeve and being movable relative to the first sleeve, the restricting member being abutted by the second sleeve, a part of the restricting member being controllably engaged within the annular groove;
an elastic member, disposed around the first sleeve and abutting against and between the first sleeve and the second sleeve;
a restricting mechanism, arranged on the first sleeve and located between the first sleeve and an inner circumferential face of the second sleeve;
wherein the first sleeve further includes an outer sleeve and an inner sleeve surrounded by the outer sleeve, the inner sleeve is axially protrusive beyond the outer sleeve in a direction from the elastic member toward the at least one restricting member, a receiving groove is formed between the inner sleeve and the outer sleeve and extends axially, the receiving groove extends axially more than half the length of the inner sleeve, and the second sleeve is sleeved on the inner sleeve and movably arranged within the receiving groove;
wherein the outer sleeve is integrally formed of one piece and has a length larger than the combined length of the second sleeve and the inner sleeve;
wherein the second sleeve is integrally formed with an outer flange which radially and annularly protrudes outwardly and an inner flange which radially and annularly protrudes inwardly at two ends thereof, the outer flange is axially abutable against an end face of the outer sleeve which faces axially, and the inner flange is abutable axially against the restricting mechanism and abutable radially against the at least one restricting member at the same time;
wherein the second sleeve is integrally formed of one piece;
wherein the receiving groove is axially open at one end;
wherein the outer flange includes an inner corner chamfer extending annularly therearound, and the inner flange includes an inner corner chamfer extending annularly therearound and an outer corner chamfer extending annularly therearound;
wherein the outer sleeve includes an annular face axially facing the outer corner chamfer of the inner flange and an inner circumferential surface, and the inner sleeve includes an annular face axially facing the inner corner chamfer of the inner flange and an inner circumferential surface;
wherein the annular face of the inner sleeve is radially aligned with the annular face of the outer sleeve, and the inner circumferential surface of the inner sleeve is axially aligned substantially gaplessly with and extends from the inner circumferential surface of the outer sleeve;
wherein the annular face of the inner sleeve and the annular face of the outer sleeve form a bottom side of the receiving groove;
wherein the elastic member abuts against the annular face of the inner sleeve and the inner corner chamfer of the inner flange and is positioned between the inner corner chamfer of the inner flange and an outer circumferential surface of the inner sleeve;
wherein when the outer flange is axially abutted against the end face of the outer sleeve, the inner flange and the at least one restricting member do not overlap.