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Expansion screw

A technology for expanding nails and pipes, applied in the directions of pins, connecting components, mechanical equipment, etc., can solve problems such as exposed threaded columns, and achieve the effect of reducing operation time, reducing labor intensity, and improving installation or tightening efficiency.

Inactive Publication Date: 2015-11-18
于国凡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides an expansion nail to solve the problem that a part of the threaded column is always exposed outside the installation hole after the expansion of the existing expansion nail or expansion bolt is completed.

Method used

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  • Expansion screw
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Examples

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Embodiment Construction

[0041] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.

[0042] Such as figure 1 , figure 2 , Figure 14 Shown, the expansion nail of the embodiment of the present invention comprises:

[0043] screw 3, such as image 3 , Figure 4 , Figure 5 As shown, the screw includes: a screw cap 35 and a screw rod 33 connected in sequence; the screw cap 35 is located at the first end of the screw rod 33; when in use, the screw 3 can wear a connecting piece, such as a hinge on the screw rod 33, and is blocked or positioned by the screw cap 35, thereby realizing that the hinge is fixed on the wall body 9 of the object to be drilled; the outer diameter of the screw cap 35 is larger than the diameter of the mounting hole, so that it is positioned outside the mounting hole;

[0044] Nut 7, such...

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PUM

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Abstract

The invention provides an expansion screw which comprises a screw body, a nut and an expansion pipe. The screw body comprises a screw cap and a screw rod which are connected in sequence. The nut is connected to the screw rod through a thread and located at the end, away from the screw cap, of the screw rod. The outer wall of the nut is provided with one or more sliding grooves formed at intervals. The screw rod is sleeved with the expansion pipe which is located between the nut and the screw cap. The first end of the expansion pipe is close to the screw cap. The second end of the expansion pipe is an expanded end close to the nut. The expansion pipe comprises one or more side walls arranged at intervals. The number of the sliding grooves is equal to that of the side walls. Each long strip-shaped side wall corresponds to one sliding groove and can slide in the corresponding sliding groove. By the adoption of the expansion screw, operation time is shortened, and working efficiency is improved.

Description

technical field [0001] The invention relates to an expansion nail. Background technique [0002] Existing expansion nails or expansion bolts are to first install the threaded column in the mounting hole, the tail of the threaded column protrudes from the mounting hole or the mounting surface, then screw the nut on the exposed threaded column, and then screw the threaded column through the nut. The progress on the top realizes the expansion of the expansion sheet in the installation hole, so that the expansion nail or expansion bolt is fixed in the installation hole by means of expansion. [0003] The expansion method of the existing expansion nails or expansion bolts makes some redundant threaded columns exposed outside the installation hole after the expansion is completed, and this part of the exposed threaded columns affects other decoration or installation work on the installation surface. Contents of the invention [0004] The invention provides an expansion nail to ...

Claims

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Application Information

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IPC IPC(8): F16B13/06
CPCF16B13/06
Inventor 于国凡
Owner 于国凡
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