Lined copper pipe with externally-pushed deformation structure of umbrella handle

Abstract

The invention relates to a lined copper pipe with an externally-pushed deformation structure of an umbrella handle. An inner handle pipe and an outer handle pipe which are sleeved together and can be withdrawn and telescoped are arranged on the umbrella handle; after deformation, the copper pipe can be fixedly arranged on a position, close to one end into which the inner handle pipe is sleeved, of the inner wall of the outer handle pipe; a section of inwards sunken arc-shaped guide groove is formed in the circumferential direction of the copper pipe with the circular cross section; two edges of the guide groove are respectively provided with an outwards convex arc head clamping edge; the cross section shapes of the inner wall and the outer wall of the copper pipe are matched with the cross section shapes of the inner handle pipe and the outer handle pipe respectively; the space between the two arc head clamping edges of the copper pipe before deformation is greater than the space between the two arc head clamping edges after deformation; the cross section shape of the copper pipe and the cross section shapes of the inner handle pipe and the outer handle pipe are designed to be of structures with small deformation, so that the copper pipe can be right arranged between the inner handle pipe and the outer handle pipe after the structure of the copper pipe is regulated slightly on the cross section, the copper pipe can be fixedly arranged on the inner wall of the outer handle pipe by means of the stress caused by deformation, and the two arc head clamping edges can determine the deformation quantity required by the copper pipe well.

Description

technical field [0001] The invention relates to a lined copper pipe, in particular to an umbrella handle lined copper pipe with an outer support deformation structure. Background technique [0002] Folding umbrellas are relatively common daily necessities. The umbrella handles of folding umbrellas are usually made of tubular structures that can be inserted into each other and stretched. When the stainless steel outer handle tube is inserted into the inner handle tube, the inner wall of the outer handle tube and the outer wall of the inner handle tube will form The friction is high, and the outer handle tube and the inner handle tube made of stainless steel with high hardness will produce an abnormally harsh sound when they are pulled and rubbed against each other. Umbrella handles are prone to damage due to friction over time. In the prior art, a copper tube with better friction performance is usually arranged between the inner handle tube and the outer handle tube wall...

AI Technical Summary

Problems solved by technology

However, in the prior art, the friction force between the copper tube and the inner handle tube is relatively large, and it is difficult to fix the copper tube on the inner wall of the outer handle tube, as well as the shape of the guide groove on the copper tube and the cross-sectional shape of the umbrella handle. matching problem

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