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Expansion screw sleeve

An expansion screw and bead technology, which is applied in the field of expansion screw sleeves, can solve the problems that the screw sleeves are not easy to withdraw, and the screw sleeves are easy to withdraw, etc., and achieve the effect of simple structure, good reliability and good practicability

Inactive Publication Date: 2016-08-24
MAIN PLAN NINGBO BATHROOM COLLECTIONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem that the screw sleeve is easy to withdraw after a period of time due to the fact that the inner end of the screw sleeve is not well clamped in the wall hole during the use process of the existing screw sleeve. Finally, the inner end of the screw sleeve can be well clamped in the wall hole, so that the screw sleeve is not easy to withdraw from the expansion screw sleeve during use

Method used

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Examples

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Embodiment Construction

[0022] The technical examples of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

[0023] Example: Expansion screw sets, see figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6As shown, the body 22 including the expansion screw sleeve is provided with a pressure neck groove 26 along the radial circumference of the body at the front end on the outer wall of the body, and a reinforcing bead 1 is set on the neck tube 27 in the neck pressure groove. The neck tube in the neck pressure groove behind the reinforced bead is also provided with an annular pressing piece 15; a slide slot is arranged axially on the tube wall of the neck tube, and the screw hole 23 of the body is connected with the lumen 24 of the neck tube. Connected, and the axis line of the screw hole coincides with the axis line of the lumen; a pressure rod 16 is arranged in the lumen of the neck tube, and...

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Abstract

The invention discloses an expansion screw sleeve, and belongs to the technical field of screw sleeves. When a screw is tightly screwed, the inner end of the screw sleeve can be clamped in a wall hole very well, so that the screw sleeve is not prone to retreating in a use process. The expansion screw sleeve comprises a body, wherein a neck pressing groove is formed in the front end of the outer side wall of the body, a reinforcing bead and an annular pressing piece are arranged in a sleeving manner on a neck pipe in the neck pressing groove, a pressing rod is arranged in a pipe cavity of the neck pipe, and two ends of the pressing rod are connected with the annular pressing piece; a pressing rod hole is formed in the pressing rod in the pipe cavity, an extrusion rotating pin is arranged in the pressing rod hole, a cavity of the reinforcing bead is filled with a glue body of AB glue, a lower cavity is filled with a hardener of the AB glue, and inner walls of an upper bead and a lower bead can be bonded and connected together after the glue body and the hardener are mixed; and an upper puncture needle and a lower puncture needle are arranged on the inner walls of the upper bead and the lower bead respectively.

Description

technical field [0001] The invention relates to the technical field of screw sleeves, in particular to an expansion screw sleeve. Background technique [0002] The present screw cover is that the inner end is connected together, and the rear end is two halves that are half-opened up and down. Moreover, the body at the inner end of the screw sleeve has a smooth structure. Even if the screw is screwed into the inner end of the screw sleeve, the inner end of the screw sleeve will not expand much, resulting in the inner end of the screw sleeve after the screw is tightened. In the hole, then cause the screw sleeve to withdraw from the wall hole on the wall after the screw sleeve has been used for a period of time, affecting the use effect of the screw sleeve. Therefore, it is very necessary to design a kind of expansion screw sleeve that allows the inner end of the screw sleeve to be well clamped in the wall hole after the screw is tightened, so as to ensure that the screw sleev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B13/06
CPCF16B13/063
Inventor 施清海史蒙恩
Owner MAIN PLAN NINGBO BATHROOM COLLECTIONS
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