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Expansion bolt

A technology of expansion bolts and expansion sleeves, which is applied in the direction of connecting components, pins, mechanical equipment, etc., can solve problems such as easy loosening, connection failure, and difficulty in disassembly, and achieve enhanced fastening effect, reduced processing difficulty, and simple and easy structure Effect

Inactive Publication Date: 2014-01-22
HUNAN GOLDWELL NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are single-stage expansion bolts and multi-stage expansion bolts commonly used in the market. Among them, the single-stage expansion bolt uses the tapered end to drive the expansion sleeve to expand, and the expansion effect only occurs at the end of the screw, that is, the entire expansion bolt and The installation hole only forms a point connection. When the expansion bolt is subjected to a lateral force, it is prone to loosening or even connection failure. However, most multi-stage expansion bolts are processed in the middle of the screw with a tapered shape similar to the shape of the screw end. The multi-stage expansion effect is achieved by adding corresponding expansion sleeves. Although this structure strengthens the fastening connection effect of the expansion bolt, it is difficult to process the special-shaped screw. The more expansion stages, the processing difficulty and cost of the special-shaped screw are greatly increased. , and once the expansion bolt with special-shaped screw is installed, it is difficult to disassemble, and the disassembly can only be realized by forcibly sawing off the exposed part, but the wall cannot be restored to the original state before drilling, which affects the appearance of the wall

Method used

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Experimental program
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Effect test

Embodiment 1

[0030] Figure 1 to Figure 4 The first embodiment of the expansion bolt of the present invention is shown, the expansion bolt includes a threaded rod 1, one end of the threaded rod 1 is threaded with a conical expansion bead 2, and the other end is threaded with a blind hole nut 3, the conical expansion There is a tapered sliding expansion bead 5 set on the threaded rod 1 between the bead 2 and the blind hole nut 3, and a tapered sliding expansion bead 5 and the conical expansion bead 2 is provided with a set on the threaded rod 1 The expansion sleeve 4, the two ends of the expansion sleeve 4 respectively offset the small end of the tapered sliding expansion bead 5 and the conical expansion bead 2, when the blind hole nut 3 is tightened, the expansion sleeve 4 forms an expansion and tightens with the installation hole The structure is simple and easy to connect. When installing, first place the expansion bolt in the mounting hole, and then tighten the blind hole nut 3. The bli...

Embodiment 2

[0038] Such as Figure 5As shown, the second embodiment of the expansion bolt of the present invention, the expansion bolt is basically the same as that of Embodiment 1, the only difference is that it includes a threaded rod 1, one end of the threaded rod 1 is threaded with a conical expansion bead 2, and the other end is threaded There is a blind hole nut 3, a tapered sliding expansion bead 5 set on the threaded rod 1 is arranged between the conical expansion bead 2 and the blind hole nut 3, and the conical sliding expansion bead 5 and the conical expansion bead 2 There is a set of expansion sleeves set on the threaded rod 1. The expansion sleeves are respectively offset against the small ends of the tapered sliding expansion beads 5 and the tapered expansion beads 2 at both ends. The expansion sleeves are composed of more than two expansion sleeves 4 It is composed of olive-shaped sliding expansion beads 9 arranged between two adjacent expansion sleeves 4. When the blind hol...

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PUM

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Abstract

The invention discloses an expansion bolt which comprises a threaded rod; one end of the threaded rod is in threaded connection with a cone-shaped expansion bead, and the other end of the threaded rod is in threaded connection with a blind hole nut; a cone-shaped sliding expansion bead which is arranged on the threaded rod in a sleeved mode is arranged between the cone-shaped expansion bead and the blind hole nut; an expansion sleeve which is arranged on the threaded rod in a sleeved mode is arranged between the cone-shaped sliding expansion bead and the cone-shaped expansion bead; the two ends of the expansion sleeve abut against the little end of the cone-shaped sliding expansion bead and the little end of the cone-shaped expansion bead respectively; when the blind hole nut is screwed up, the expansion sleeve is expanded and is connected with a mounting hole in an expanded mode. The invention further discloses an expansion bolt; an expansion sleeve set which is arranged on a threaded rod in a sleeved mode is arranged between a cone-shaped sliding expansion bead and a cone-shaped expansion bead, the two ends of the expansion sleeve set abut against the little end of the cone-shaped sliding expansion bead and the little end of the cone-shaped expansion bead respectively, and the expansion sleeve set is formed by more than two expansion sleeves and olive-shaped sliding expansion beads arranged between the adjacent expansion sleeves; when the blind hole nut is screwed up, the expansion sleeves are expanded and are connected with a mounting hole in an expanded mode. The expansion bolts are simple in structure and strong in fastening force.

Description

technical field [0001] The invention mainly relates to the technical field of fasteners, in particular to an expansion bolt. Background technique [0002] The expansion bolt is mainly composed of a screw rod, an expansion sleeve, a gasket and a nut, and the tail end of the screw rod is set to be tapered. At present, there are single-stage expansion bolts and multi-stage expansion bolts commonly used in the market. Among them, the single-stage expansion bolt uses the tapered end to drive the expansion sleeve to expand, and the expansion effect only occurs at the end of the screw, that is, the entire expansion bolt and The installation hole only forms a point connection. When the expansion bolt is subjected to a lateral force, it is prone to loosening or even connection failure. However, most multi-stage expansion bolts are processed in the middle of the screw with a tapered shape similar to the shape of the screw end. The multi-stage expansion effect is achieved by adding co...

Claims

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Application Information

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IPC IPC(8): F16B13/08
Inventor 谢斌泉
Owner HUNAN GOLDWELL NEW MATERIALS TECH CO LTD