CN203189451U - Barb-type drop-proof expansion screw - Google Patents
Barb-type drop-proof expansion screw Download PDFInfo
- Publication number
- CN203189451U CN203189451U CN 201320076836 CN201320076836U CN203189451U CN 203189451 U CN203189451 U CN 203189451U CN 201320076836 CN201320076836 CN 201320076836 CN 201320076836 U CN201320076836 U CN 201320076836U CN 203189451 U CN203189451 U CN 203189451U
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- CN
- China
- Prior art keywords
- screw
- nail
- screw sleeve
- cover
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a barb-type drop-proof expansion screw which comprises a screw body and a screw sleeve. An expansion hole which allows the screw body to penetrate through is formed in the screw sleeve, the lower portion of the expansion hole contracts towards the central position of the expansion hole to form a big-end-up conical hole, a plurality of expansion gaps are evenly formed all around the lower portion of the screw sleeve, a plurality of spine-shaped convex columns are arranged on the lower portion of the outer wall of the screw sleeve, one end of each convex column is fixedly connected with the outer wall of the screw sleeve, the other end of each convex column inclines towards the upper portion of the screw sleeve, the top end of the screw sleeve is provided with a sealing cover which is connected with the screw body through threads, and the length of the screw body is equal to the height of the conical hole. Due to the fact that the convex columns are arranged on the outer wall of the screw sleeve, the screw sleeve is made to be barb-shaped and the expansion screw can be effectively prevented from dropping; the length of the screw is decreased, therefore, resource waste is reduced and the arrangement of the sealing cover increases the attractive property of the appearance of the screw.
Description
Technical field
The utility model belongs to technical field of fastening, is specifically related to a kind of fluking type anticreep expandable nail.
Background technique
Expandable nail in the market is to be made of screw and outside nail cover thereof, by the change of screw with the change realization nail cover volume of nail cover relative position, to reach fixing purpose.It is consistent that but the screw of existing expandable nail and nail overlap length, caused the waste of ample resources, and the part of exposing porthole after installing is hindered attractive in appearance.In addition, the power of holding of existing expandable nail is not enough, easily deviates from or loosening.
Summary of the invention
Technical problem to be solved in the utility model is at above-mentioned the deficiencies in the prior art, and a kind of fluking type anticreep expandable nail is provided, and it can effectively address the above problem.
The technological scheme that the utility model adopts is: a kind of fluking type anticreep expandable nail, comprise screw and nail cover, be provided with the inflation port that penetrates for screw in the described nail cover, described inflation port bottom is shunk to its central position and is formed a up big and down small cone shape hole, described nail cover evenly is provided with several dilatation joints around the bottom, the bottom of described nail cover outer wall is provided with some spiny projections, one end of described projection is fixedlyed connected with nail cover outer wall, its the other end tilts to nail cover top, the top of described nail cover is provided with the sealing cover that is threaded, and the length of described screw equals the height of described cone shape hole.
As preferably, described projection evenly distributes along described nail cover outer wall circumferencial direction.
As preferably, the length of described projection is 1 centimetre.
The beneficial effects of the utility model are: because the utility model arranges a plurality of projections at nail cover outer wall, make the nail cover form reversed acanthoid, when the nail cover outwards expanded, projection then entered body of wall and plays the barb effect, can prevent effectively that this expandable nail from coming off; And reduced the length of screw, when not influencing performance, reduced the waste of resource, only need prop up to knock by other rod-like articles during use and get final product, install and take out rod-like articles and overlap inner fill concrete or other binding material to nail, screw on sealing cover at last, increased specious performance of the present utility model.
Description of drawings
Fig. 1 is the utility model structural representation.
Among the figure: 1, screw; 2, nail cover; 3, inflation port; 4, cone shape hole; 5, projection; 6, sealing cover.
Embodiment
Below in conjunction with the accompanying drawings and the specific embodiments the utility model is described in further detail.
As shown in Figure 1, a kind of fluking type anticreep expandable nail, comprise screw 1 and nail cover 2, be provided with the inflation port 3 that penetrates for screw 1 in the described nail cover 2, described inflation port 3 bottoms are shunk to its central position and are formed a up big and down small cone shape hole 4, described nail evenly is provided with several dilatation joints around overlapping 2 bottoms, the bottom that described nail overlaps 2 outer walls is provided with some spiny projections 5, described projection 5 overlaps 2 outer wall circumferencial directions along described nail and evenly distributes, and the length of projection 5 is 1 centimetre, one end of described projection 5 is fixedlyed connected with nail cover 2 outer walls, its the other end is to nail cover 2 upper angled, the top of described nail cover 2 is provided with the sealing cover 6 that is threaded, and the length of described screw 1 equals the height of described cone shape hole 4.
Because the utility model arranges a plurality of projections 5 at nail cover 2 outer walls, make nail cover 2 form reversed acanthoid, when nail cover 2 outwards expanded, 5 of projections entered body of wall and play the barb effect, can prevent effectively that this expandable nail from coming off; And reduced the length of screw 1, when not influencing performance, reduced the waste of resource, only need prop up to knock by other rod-like articles during use and get final product, install and take out rod-like articles and overlap 2 inner fill concretes or other binding material to nail, screw on sealing cover 6 at last, increased specious performance of the present utility model.
The above, it only is the utility model preferred embodiment, so can not limit the scope that the utility model is implemented with this, i.e. the equivalence of doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model patent contains.
Claims (3)
1. fluking type anticreep expandable nail, comprise screw (1) and nail cover (2), be provided with the inflation port (3) that penetrates for screw (1) in the described nail cover (2), described inflation port (3) bottom is shunk to its central position and is formed a up big and down small cone shape hole (4), evenly be provided with several dilatation joints around described nail cover (2) bottom, it is characterized in that: the bottom of described nail cover (2) outer wall is provided with some spiny projections (5), one end of described projection (5) is fixedlyed connected with nail cover (2) outer wall, its the other end is to nail cover (2) upper angled, the top of described nail cover (2) is provided with the sealing cover (6) that is threaded, and the length of described screw (1) equals the height of described cone shape hole (4).
2. fluking type anticreep expandable nail according to claim 1, it is characterized in that: described projection (5) evenly distributes along described nail cover (2) outer wall circumferencial direction.
3. fluking type anticreep expandable nail according to claim 1 and 2, it is characterized in that: the length of described projection (5) is 1 centimetre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320076836 CN203189451U (en) | 2013-02-19 | 2013-02-19 | Barb-type drop-proof expansion screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320076836 CN203189451U (en) | 2013-02-19 | 2013-02-19 | Barb-type drop-proof expansion screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203189451U true CN203189451U (en) | 2013-09-11 |
Family
ID=49106313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320076836 Expired - Fee Related CN203189451U (en) | 2013-02-19 | 2013-02-19 | Barb-type drop-proof expansion screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203189451U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089888A (en) * | 2016-08-25 | 2016-11-09 | 李彩斌 | A kind of expansion fixes pipe |
-
2013
- 2013-02-19 CN CN 201320076836 patent/CN203189451U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089888A (en) * | 2016-08-25 | 2016-11-09 | 李彩斌 | A kind of expansion fixes pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 Termination date: 20150219 |
|
| EXPY | Termination of patent right or utility model |