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Multi-layer sleeve structure

A sleeve and outer cylinder technology, applied in the field of multi-layer sleeve structure, can solve problems such as poor bonding, easy slipping and separation, and achieve the effects of improving market competitiveness, good structural strength, and long service life

Inactive Publication Date: 2008-02-13
谢智庆
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main technical problem to be solved by the present invention is to overcome the disadvantages of poor bonding between the existing outer cylinder and the inner bushing, and to provide a multi-layer sleeve structure to combine the outer cylinder and the inner bushing. Stable and reliable, avoid direct impact on the working surface during operation, and have a long service life

Method used

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Embodiment Construction

[0050] A kind of multi-layer sleeve structure of the present invention, please refer to Fig. 1 to shown in Fig. 5, this sleeve 1 mainly comprises an outer cylinder 10 and an inner bushing 20, and this outer cylinder 10 is made of hard steel, and the inner lining The sleeve 20 is made of aluminum material with poor hardness, and an anti-slip device composed of corresponding grooves 12 and flanges 24 is provided between the outer cylinder 10 and the inner sleeve 20;

[0051] The outer cylinder 10 is generally in the shape of a hollow cylinder, and has an accommodating space 11 inside for the inner liner 20 to accommodate. The periphery of the space 11 is provided with several grooves 12. In this embodiment, the grooves 12 are arc-shaped and arranged around the periphery of the accommodating space 11;

[0052] The inner liner 20 is generally cylindrical, with a convex buffer section 21 on the outer side of the top end, and a pulling port 22 on the inner side of the top end, which...

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Abstract

A multi-layer sleeve structure comprises an external sleeve and an internal lining; a non-slip device is equipped between the external sleeve and the internal lining; the non-slip device comprises a plurality of grooves equipped on the external sleeve and corresponding flanges equipped on the internal lining; the non-slip device also comprises a plurality of flanges equipped on the external sleeve and corresponding grooves equipped on the internal lining; the flanges are arc, rectangular or triangular ones and the shapes of the grooves are matched figures; the external sleeve is made of steel material and the internal lining is made of aluminum material. With the present invention, the combination of the external sleeve and internal lining is stable and firm and direct impact on the working face is avoided in operation, which prolongs the service life.

Description

technical field [0001] The invention relates to a hand tool, in particular to a multi-layered sleeve structure with a stable combination of an outer cylinder and an inner bush, which avoids direct impact on the working surface during operation and has a long service life. Background technique [0002] Existing sleeves such as U.S. Patent No. 6397706, "PROTECTIVE SOCKETS", mainly divide the sleeve into two parts, the outer cylinder and the inner bushing. The outer cylinder is made of high-hardness steel, and the inner bushing It is made of a material with lower hardness than the outer cylinder, and the outer cylinder is sleeved on the outside of the inner bushing, so that only the protruding part of one end of the inner bushing protrudes from one end of the outer cylinder, so that when the sleeve is in use, This protrusion creates protection against direct impact on the work surface. [0003] However, the contact surface of the outer cylinder and the inner bushing of the exi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B23/00B25B13/06
Inventor 谢智庆
Owner 谢智庆
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