CN211550194U - Firmly fixed expansion screw - Google Patents
Firmly fixed expansion screw Download PDFInfo
- Publication number
- CN211550194U CN211550194U CN201922458980.0U CN201922458980U CN211550194U CN 211550194 U CN211550194 U CN 211550194U CN 201922458980 U CN201922458980 U CN 201922458980U CN 211550194 U CN211550194 U CN 211550194U
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- CN
- China
- Prior art keywords
- sleeve
- inflation
- screw rod
- screw
- spacing
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- 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 provides a fixed firm inflation screw belongs to hardware technical field, including the screw rod, the screw rod upper end is provided with the screw thread, and the lower extreme is provided with the inflation bolt that has the tapering, and the inflation is tied the bottom and is provided with circular spacing platform, should expand to tie and be provided with the spacing groove between the spacing platform, and spacing platform circumference position is provided with the friction ring, and the screw rod overcoat is equipped with the sleeve, and the sleeve leans on the next position to be provided with a plurality of incisions, and incision upper end intercommunication has the circular port, and this incision bottom is provided with the body of buckling to inside rounding off, and the sleeve outer wall. When the inflation is tied and is got into the sleeve, the sleeve bottom can be strutted, simultaneously, the inflation is tied and is fixed with the inside rounding off impression block of buckling of inside rounding off in bottom of the cut-out portion of being provided with spacing groove between the spacing platform, avoids tying the roll-off sleeve because the nut is not hard up to lead to the inflation, and in addition, the expanded friction rubber circle of spacing bench flexible has increased the frictional force of screw rod with the wall body, makes the utility model discloses can be abundant promptly the object after the deformation, prevent its pine from taking off.
Description
Technical Field
The utility model belongs to the technical field of the hardware, especially, relate to a fixed firm inflation screw.
Background
The expansion screw is generally a metal expansion screw, and the expansion screw is fixed by utilizing the wedge-shaped slope to promote expansion to generate friction bond force so as to achieve the fixing effect. One end of the screw is provided with threads, and the other end of the screw is provided with conicity. The outer surface of the wall is covered by an iron sheet (some steel pipes), a half of an iron sheet cylinder (steel pipe) is provided with a plurality of notches, the iron sheet cylinder (steel pipe) and the notches are plugged into a hole drilled on the wall together, then a nut is locked, the nut pulls a screw outwards to pull the taper into the iron sheet cylinder, the iron sheet cylinder is expanded and then is tightly fixed on the wall, and the wall is generally used for fastening protective guards, rain awnings, air conditioners and the like on materials such as cement, bricks and the like. But its fixing is not very reliable, if the load has great vibrations, probably takes place to loosen, causes property loss and potential safety hazard.
Disclosure of Invention
The to-be-solved problem of the utility model is to provide a simple structure, fixed firm inflation screw.
In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a fixed firm inflation screw, includes the screw rod, the screw rod upper end is provided with the screw thread, and the lower extreme is provided with the inflation bolt that has the tapering, the inflation is tied the bottom and is provided with circular spacing platform, should expand to tie and be provided with the spacing groove between the spacing platform, spacing platform circumference position is provided with the friction circle, the screw rod overcoat is equipped with the sleeve, the sleeve leans on the position to be provided with a plurality of incisions, incision upper end intercommunication has the circular port, and this incision bottom is provided with the body of buckling of inside rounding off, the sleeve outer wall is provided with a plurality of annular groove, it installs the nut to lie in the sleeve top on the screw rod, the nut passes.
The friction ring is a rubber ring.
And a gasket is arranged between the nut and the sleeve.
The screw rod and the limiting table are of an integrally formed structure.
The screw, the sleeve and the limiting table are made of metal materials.
Since the technical scheme is used, the utility model has the advantages of the whole structure is simple, in the hole of beating on its wall, then lock nut, outwards draw the screw rod through the nut, tie the inflation and draw in the sleeve, because be provided with incision and circular port on the sleeve, can fully be out of shape, in the inflation bolt gets into the sleeve, the sleeve bottom can be strutted, telescopic inflation effect has been improved, and simultaneously, it can be fixed with the inside rounding off's of incision bottom meeting block of buckling to be provided with spacing groove between inflation bolt and the spacing platform, avoid because the nut is not hard up to lead to inflation bolt roll-off sleeve, in addition, the expanded frictional rubber circle of spacing bench deformable has increased the frictional force of screw rod with the wall body, a plurality of annular groove that the sleeve outer wall set up in addition, make the utility model discloses can be abundant promptly the object after the deformation.
The utility model has the advantages that: has the advantages of simple structure and firm fixation.
Drawings
The advantages and mode of realisation of the invention will become more apparent hereinafter by describing in detail the invention with reference to the attached drawings, wherein the content shown in the drawings is only for explaining the invention, without constituting any limitation to the meaning of the invention, in which:
FIG. 1 is a schematic view of the structure of the present invention
FIG. 2 is a diagram of the usage state of the present invention
In the figure:
1. screw 2, expansion bolt 3 and limit table
4. Limiting groove 5, friction ring 6 and sleeve
7. Notch 8, circular hole 9, bending body
10. Annular groove 11, nut 12 and gasket
Detailed Description
As shown in figures 1 and 2, the utility model relates to a firmly fixed expansion screw, which comprises a screw rod 1, the upper end of the screw rod 1 is provided with a thread, the lower end is provided with an expansion bolt 2 with a taper, the bottom of the expansion bolt 2 is provided with a circular limit table 3, a limit groove 4 is arranged between the expansion bolt 2 and the limit table 3, the circumferential position of the limit table 3 is provided with a friction ring 5, the friction ring is arranged in the friction ring groove of the limit table, a sleeve 6 is sleeved outside the screw rod 1, a plurality of notches 7 are arranged at the lower position of the sleeve 6, the upper end of each notch 7 is communicated with a circular hole 8, the bottom of each notch 7 is provided with a bending body 9 which is bent inwards and smoothly, the outer wall of the sleeve 6 is provided with a plurality of annular grooves, a nut 11 is arranged above the sleeve 6 on the screw rod 1, the nut 11 is connected with the screw rod 1, screw rod 1 and spacing platform 3 are integrated into one piece structure, and screw rod 1, sleeve 6 and spacing platform 3 are all made of iron or steel.
The utility model has the advantages of simple integral structure, in the hole of beating on its wall, then lock nut 11, draw screw rod 1 outwards through nut 11, tie 2 in sleeve 6 with the inflation, because be provided with incision 7 and circular port 8 on the sleeve 6, can fully warp, tie 2 entering sleeve 6 in as the inflation, sleeve 6 bottom can be strutted, sleeve 6's inflation effect has been improved, and simultaneously, it is fixed to be provided with spacing groove 4 and incision 7 bottom to the inside rounding off's of buckling body 9 meeting block between 2 and the spacing platform 3 to expand, avoid leading to 2 roll-off sleeves 6 of inflation bolt because nut 11 is not hard up, in addition, the expanded friction rubber circle of deformable has increased the frictional force of screw rod 1 with the wall body on the spacing platform 3, in addition a plurality of annular groove 10 that 6 outer walls of sleeve set up, make the utility model discloses can abundant object after warping promptly, prevent its pine from taking off.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.
Claims (4)
1. The utility model provides a firm inflation screw of fixing which characterized in that: including the screw rod, the screw rod upper end is provided with the screw thread, and the lower extreme is provided with the inflation bolt that has the tapering, the inflation is tied the bottom and is provided with circular spacing platform, should expand to tie and be provided with the spacing groove between the spacing platform, spacing platform circumference position is provided with the friction ring, the screw rod overcoat is equipped with the sleeve, the sleeve leans on the position to be provided with a plurality of incisions, incision upper end intercommunication has the circular port, and this incision bottom is provided with the body of buckling of inside rounding off, the sleeve outer wall is provided with a plurality of annular groove, it installs the nut to lie in the sleeve top on the screw rod, the nut passes through threaded.
2. A securely fastened expansion screw according to claim 1, characterised in that: the friction ring is a rubber ring.
3. A securely fastened expansion screw according to claim 1, characterised in that: and a gasket is arranged between the nut and the sleeve.
4. A securely fastened expansion screw according to claim 1, characterised in that: the screw rod and the limiting table are of an integrally formed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922458980.0U CN211550194U (en) | 2019-12-31 | 2019-12-31 | Firmly fixed expansion screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922458980.0U CN211550194U (en) | 2019-12-31 | 2019-12-31 | Firmly fixed expansion screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211550194U true CN211550194U (en) | 2020-09-22 |
Family
ID=72512205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922458980.0U Expired - Fee Related CN211550194U (en) | 2019-12-31 | 2019-12-31 | Firmly fixed expansion screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211550194U (en) |
-
2019
- 2019-12-31 CN CN201922458980.0U patent/CN211550194U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200922 Termination date: 20211231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |