CN220286152U - Rotation-stopping explosion type expansion head - Google Patents
Rotation-stopping explosion type expansion head Download PDFInfo
- Publication number
- CN220286152U CN220286152U CN202321328893.3U CN202321328893U CN220286152U CN 220286152 U CN220286152 U CN 220286152U CN 202321328893 U CN202321328893 U CN 202321328893U CN 220286152 U CN220286152 U CN 220286152U
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- expansion
- mounting hole
- screw
- wall
- inner taper
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- 238000004880 explosion Methods 0.000 title abstract description 5
- 239000002360 explosive Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The utility model discloses a rotation-stopping explosion type expansion head which is of an integrated structure composed of a circular pipe and an inner taper pipe, wherein an enlarged part is arranged on the outer wall of the inner taper pipe, expansion joints are uniformly distributed on the side wall of the inner taper pipe, and internal threads are arranged in the circular pipe. The expansion sleeve disclosed by the utility model can be suitable for the existing common screw, has stronger universality, is simple in structure and easy to process, and reduces the manufacturing cost; meanwhile, the expansion part is arranged on the outer wall of the expansion sleeve, after the expansion sleeve is placed in the mounting hole, the expansion part and the inner wall of the mounting hole are pre-tightened, friction force is generated, and when the screw is screwed into the expansion sleeve, the expansion sleeve cannot rotate and skid in the mounting hole under the action of the friction force, so that the screw can be conveniently and rapidly screwed, and the mounting efficiency is improved.
Description
Technical Field
The utility model relates to a rotation-stopping explosive expansion head, and belongs to the technical field of expansion bolts.
Background
With the continued development of the fastener industry, expansion screws come in a wide variety of forms. However, the existing expansion bolts still have the defects that: or ensuring the reliability of fixation without considering the structural complexity and the manufacturing cost; or the reliability and manufacturing cost of the fixing are solved, but the convenience and versatility of the installation are lost. In addition, the outer diameter of the expansion sleeve of the existing expansion bolt is smaller than that of the mounting hole, when the screw is screwed into the expansion sleeve, the expansion sleeve can rotate in the mounting hole to skid, so that the screw cannot be screwed fast, and the mounting efficiency is reduced.
Therefore, it is necessary to design an expansion head which is simple in structure, reliable in fixing, low in manufacturing cost and convenient to install.
Disclosure of Invention
In order to solve the technical problems, the utility model provides the anti-rotation explosion type expansion head which is simple in structure, low in manufacturing cost, convenient to install and firm in fixation.
The utility model is composed as follows: the utility model provides a prevent changeing explosion-type expansion head, the expansion head is the integral type structure of constituteing by pipe and interior taper pipe, is provided with the increase on the outer wall of interior taper pipe, and the equipartition has the expansion joint on the lateral wall of interior taper pipe, is provided with the internal thread in the pipe.
Further, the taper of the inner taper pipe is not more than 6 degrees.
Further, the increasing part is composed of a guide cone section and a cylindrical section, and the outer diameter of the cylindrical section is larger than that of the circular tube.
Due to the adoption of the technical scheme, the utility model has the advantages that:
1. the expansion sleeve disclosed by the utility model can be suitable for the existing common screw, has stronger universality, is simple in structure and easy to process, and reduces the manufacturing cost;
2. according to the utility model, the expansion part is arranged on the outer wall of the expansion sleeve, after the expansion sleeve is arranged in the mounting hole, the expansion part is pre-tightened with the inner wall of the mounting hole, and friction force is generated, so that when the screw is screwed into the expansion sleeve, the expansion sleeve cannot rotate and slip in the mounting hole under the action of the friction force, the screw can be conveniently and rapidly screwed, and the mounting efficiency is improved;
3. because the diameter of mounting hole is less than the external diameter of increase, after the mounting hole was arranged in to the inflation cover, the effect that the increase on the inflation cover received the mounting hole inner wall inwards extrudeed, makes the interior taper hole of the interior taper pipe of inflation cover further reduce, when inserting the inflation cover in the mounting hole with the screw, the screw then contacts with interior taper hole and produces powerful expansion force, and the more the screw is twisted, the expansion force that produces is greater to effectively prevent that the inflation cover from deviating from in the mounting hole, reliability and the security when guaranteeing to use.
Drawings
FIG. 1 is a cross-sectional view of a schematic structural diagram of the present utility model;
FIG. 2 is a perspective view of a schematic structural diagram of the present utility model;
fig. 3 is a schematic view of the structure of the present utility model when installed.
Reference numerals illustrate: 1-round tube, 2-inner taper tube, 3-increasing part, 4-expansion joint, 301-taper guiding section and 302-cylindrical section.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be further described in detail with reference to the accompanying drawings and examples.
Examples
As shown in fig. 1 and 2, the rotation-stopping explosion type expansion head of the utility model is an integrated structure composed of a circular tube 1 and an inner taper tube 2, an enlarged part 3 is arranged on the outer wall of the inner taper tube 2, 4 expansion joints 4 are uniformly distributed on the side wall of the inner taper tube 2, and internal threads are arranged in the circular tube 1. The taper of the inner cone 2 is 3 degrees. The enlarged part 3 is composed of a guide cone section 301 and a cylindrical section 302, and the outer diameter of the cylindrical section 302 is larger than that of the circular tube 1.
The working principle of the utility model is as follows:
as shown in fig. 3, a common screw matched with the internal thread of the circular tube 1 is selected first, then the screw is screwed into the circular tube 1 of the expansion head, but the head of the screw is ensured not to enter the inner taper tube 2, then a mounting hole is drilled at the position where the expansion bolt is mounted, the diameter of the mounting hole is larger than the outer diameter of the circular tube 1 and smaller than the outer diameter of the cylindrical section 302, and then the expansion head and the screw are put into the mounting hole together. After the expansion head is placed in the mounting hole, the inner wall of the mounting hole is pre-tightened with the increasing part 3, friction force is generated, when the screw is continuously screwed into the expansion head, the expansion head cannot rotate and skid in the mounting hole under the action of friction force, the screw can be conveniently and rapidly screwed, and the mounting efficiency is improved. Meanwhile, because the diameter of the mounting hole is smaller than the outer diameter of the enlarged part 3, after the expansion head is placed in the mounting hole, the enlarged part 3 on the expansion head is pressed inwards under the action of the inner wall of the mounting hole, so that the inner taper hole of the inner taper pipe 2 of the expansion head is further reduced, when the screw is continuously screwed into the expansion head placed in the mounting hole, the head of the screw is contacted with the inner taper hole of the inner taper pipe 2 and generates strong expansion force, and the more the screw is screwed in, the larger the generated expansion force is, thereby effectively preventing the expansion head from being separated from the mounting hole and ensuring the reliability and the safety during use.
Claims (3)
1. A rotation-stopping explosive expansion head, which is characterized in that: the expansion head is of an integrated structure composed of a circular tube (1) and an inner taper tube (2), an increasing part (3) is arranged on the outer wall of the inner taper tube (2), expansion joints (4) are uniformly distributed on the side wall of the inner taper tube (2), and internal threads are arranged in the circular tube (1).
2. The anti-rotation explosive expansion head according to claim 1, characterized in that: the taper of the inner taper pipe (2) is not more than 6 degrees.
3. The anti-rotation explosive expansion head according to claim 1, characterized in that: the enlarged part (3) consists of a guide cone section (301) and a cylindrical section (302), and the outer diameter of the cylindrical section (302) is larger than that of the circular tube (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321328893.3U CN220286152U (en) | 2023-05-29 | 2023-05-29 | Rotation-stopping explosion type expansion head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321328893.3U CN220286152U (en) | 2023-05-29 | 2023-05-29 | Rotation-stopping explosion type expansion head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220286152U true CN220286152U (en) | 2024-01-02 |
Family
ID=89338330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321328893.3U Active CN220286152U (en) | 2023-05-29 | 2023-05-29 | Rotation-stopping explosion type expansion head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220286152U (en) |
-
2023
- 2023-05-29 CN CN202321328893.3U patent/CN220286152U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240201 Address after: No.5, 8th Floor, Unit 5, Building 1, No. 128 Guiwu South Road, Yunyan District, Guiyang City, Guizhou Province, 550001 Patentee after: Wang Shengbo Country or region after: China Address before: 550002 No. 7, unit 1, No. 7, Qingnian Road, Nanming District, Guiyang City, Guizhou Province Patentee before: Ran Li Country or region before: China |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240508 Address after: No. 27 Zhuoju Road, East Industrial Zone, Dongmingyang Village, Linmingguan Town, Yongnian District, Handan City, Hebei Province, 057150 Patentee after: Handan Zhong'ancheng Fastener Manufacturing Co.,Ltd. Country or region after: China Address before: No.5, 8th Floor, Unit 5, Building 1, No. 128 Guiwu South Road, Yunyan District, Guiyang City, Guizhou Province, 550001 Patentee before: Wang Shengbo Country or region before: China |