CN203189452U - Detachable expansion nail - Google Patents
Detachable expansion nail Download PDFInfo
- Publication number
- CN203189452U CN203189452U CN 201320080376 CN201320080376U CN203189452U CN 203189452 U CN203189452 U CN 203189452U CN 201320080376 CN201320080376 CN 201320080376 CN 201320080376 U CN201320080376 U CN 201320080376U CN 203189452 U CN203189452 U CN 203189452U
- Authority
- CN
- China
- Prior art keywords
- screw
- nail
- sleeve
- swivel nut
- screw rod
- 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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- Orthopedics, Nursing, And Contraception (AREA)
Abstract
The utility model discloses a detachable expansion nail which comprises a bolt and a nail sleeve. An expansion hole allowing the bolt to penetrate through is formed in the nail sleeve, multiple expansion seams are evenly arranged on the periphery of the lower portion of the nail sleeve, the bolt is formed by an external cylindrical screw sleeve and a screw in the screw sleeve, the screw is in threaded connection in the screw sleeve, internal threads and external threads are matched and cover the inner wall of the screw sleeve and the outer wall of the screw, the screw is coaxial with the nail sleeve, a rotating groove for rotating the screw is formed in the top end of the screw, and the rotating groove is in an S shape. The bolt of the detachable expansion nail is composed of the screw sleeve and the screw, when the nail is mounted and needs to be dismounted, a specially-made screw driver with an S-shaped opening can be used for rotating the screw, the screw is made to be pulled away from the screw sleeve, the screw sleeve with elasticity is contracted towards an cavity inside the screw sleeve under the extrusion action of the nail sleeve at the moment, therefore, expansion force is decreased, the nail sleeve can be taken out of a wall hole, the nail sleeve can be repeatedly dismounted and used, and resources are saved.
Description
Technical field
The utility model belongs to technical field of fastening, is specifically related to a kind of detachable expansion nail.
Background technique
Expandable nail in the market is to be made of screw and outside nail cover thereof, and nail puts and is provided with dilatation joint, and the change of overlapping relative position by screw and nail realizes that nail overlaps the change of volume, to reach fixing purpose.But, because existing expandable nail is non-disconnectable, can only disposablely use, relatively waste resource.
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 detachable expansion nail is provided, and can use special instrument to pull down after installing, and obtains the recycling of resource.
The technological scheme that the utility model adopts is: a kind of detachable expansion nail, comprise screw and nail cover, be provided with the inflation port that penetrates for screw in the described nail cover, described nail cover evenly is provided with several dilatation joints around the bottom, described screw is made of the swivel nut cylindraceous of outside and the screw rod of this swivel nut inside, described screw flight connects in the swivel nut, all be coated with internal thread and the outside thread that is complementary at swivel nut inwall and screw rod outer wall, described screw rod is coaxial with described nail cover, described screw tip is provided with the swivelling chute of rotary screw, and this swivelling chute is S-shaped.
As preferably, described swivel nut is formed by the abrasive rubber manufacturing.
As preferably, the length of described screw rod is less than the length of swivel nut.
The beneficial effects of the utility model are: screw of the present utility model is made of swivel nut and screw rod, when after installing, needing to pull down, can use the special spiral shell cutter of beginning to speak S-shaped to come rotary screw, make it deviate from the swivel nut position, this moment, the rubber-like swivel nut then shrank to its internal cavities under the squeezing action of nail cover, thereby expansive force is reduced, can be with the nail cover by taking out in the porthole, can the repeated multiple times dismounting use, economize on resources.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model plan view.
Among the figure: 1, nail cover; 2, swivel nut; 3, screw rod; 4, swivelling chute.
Embodiment
Below in conjunction with the accompanying drawings and the specific embodiments the utility model is described in further detail.
As depicted in figs. 1 and 2, a kind of detachable expansion nail, comprise screw and nail cover 1, be provided with the inflation port that penetrates for screw in the described nail cover 1, described nail evenly is provided with several dilatation joints around overlapping 1 bottom, described screw is made of the swivel nut cylindraceous 2 of outside and the screw rod 3 of this swivel nut 2 inside, described screw rod 3 is threaded in the swivel nut 2, all be coated with internal thread and the outside thread that is complementary at swivel nut 2 inwalls and screw rod 3 outer walls, it is 1 coaxial that described screw rod 3 and described nail overlap, described screw rod 3 tops are provided with the swivelling chute 4 of rotary screw 3, and this swivelling chute 4 is S-shaped.As preferably, described swivel nut 2 is formed by the abrasive rubber manufacturing, and the length of described screw rod 3 is less than the length of swivel nut 2.
Screw of the present utility model is made of swivel nut 2 and screw rod 3, when after installing, needing to pull down, can use the special spiral shell cutter of beginning to speak S-shaped to come rotary screw 3, make it deviate from swivel nut 2 positions, 2 of rubber-like swivel nuts shrink to its internal cavities under the squeezing action of nail cover 1 at this moment, thereby expansive force is reduced, and can overlap 1 by taking out in the porthole by nail, can the repeated multiple times dismounting use, economize on resources.
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. detachable expansion nail, comprise screw and nail cover (1), be provided with the inflation port that penetrates for screw in the described nail cover (1), evenly be provided with several dilatation joints around described nail cover (1) bottom, it is characterized in that: described screw is made of swivel nut cylindraceous (2) and the inner screw rod (3) of this swivel nut (2) of outside, described screw rod (3) is threaded in the swivel nut (2), all be coated with internal thread and the outside thread that is complementary at swivel nut (2) inwall and screw rod (3) outer wall, described screw rod (3) is coaxial with described nail cover (1), described screw rod (3) top is provided with the swivelling chute (4) of rotary screw (3), and this swivelling chute (4) is S-shaped.
2. detachable expansion nail according to claim 1, it is characterized in that: described swivel nut (2) is formed by the abrasive rubber manufacturing.
3. detachable expansion nail according to claim 1, it is characterized in that: the length of described screw rod (3) is less than the length of swivel nut (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320080376 CN203189452U (en) | 2013-02-21 | 2013-02-21 | Detachable expansion nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320080376 CN203189452U (en) | 2013-02-21 | 2013-02-21 | Detachable expansion nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203189452U true CN203189452U (en) | 2013-09-11 |
Family
ID=49106314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320080376 Expired - Fee Related CN203189452U (en) | 2013-02-21 | 2013-02-21 | Detachable expansion nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203189452U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953329A (en) * | 2018-09-12 | 2018-12-07 | 闫自超 | A kind of expandable nail |
| CN111749964A (en) * | 2020-05-26 | 2020-10-09 | 浙江斯泰新材料科技股份有限公司 | Detachable rotary-striking rivet bolt |
-
2013
- 2013-02-21 CN CN 201320080376 patent/CN203189452U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953329A (en) * | 2018-09-12 | 2018-12-07 | 闫自超 | A kind of expandable nail |
| CN108953329B (en) * | 2018-09-12 | 2023-07-25 | 闫自超 | Expansion nail |
| CN111749964A (en) * | 2020-05-26 | 2020-10-09 | 浙江斯泰新材料科技股份有限公司 | Detachable rotary-striking rivet bolt |
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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: 20150221 |
|
| EXPY | Termination of patent right or utility model |