Patent ID: 11953128
Assignee: HELLERMANN TYTON (WUXI) ELECTRICAL ACCESSORIES CO., LTD.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 16:
17. The apparatus of claim 1,
wherein the connecting column further comprises an end including a limit flange, and the perforation comprises a hook configured to stop the limit flange to prevent the upper cover from coming out,
wherein a sector block protrudes from a curved wall of the limit flange and a first stopper is provided on an inner wall of the perforation, when the sector block and the first stopper are axially misaligned, the connecting column can freely pass through the perforation, and
wherein a convex block is provided in a middle of the connecting column, when the connecting column can freely pass through the perforation, the convex block and the hook are dislocated.