CN200964982Y - Expansion screw - Google Patents
Expansion screw Download PDFInfo
- Publication number
- CN200964982Y CN200964982Y CN 200620134623 CN200620134623U CN200964982Y CN 200964982 Y CN200964982 Y CN 200964982Y CN 200620134623 CN200620134623 CN 200620134623 CN 200620134623 U CN200620134623 U CN 200620134623U CN 200964982 Y CN200964982 Y CN 200964982Y
- Authority
- CN
- China
- Prior art keywords
- expansion
- screw
- nut
- utility
- setscrew
- 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
Links
Landscapes
- Transmission Devices (AREA)
Abstract
The utility model discloses an expansion screw which overcomes the shortage of that the expansion screw in the current art can not be retreated. The expansion screw consists of a screw thread, a nut, an expansion body, an expansion mouth, a T-shaped screw and a T-shaped head. The utility model is characterized in that the internal end of the expansion body of the expansion screw is provided with a fixed nut which has the identical screw thread with the T-shaped screw; when the installation is correct, the nut of the T-shaped screw is tightly screwed. When the installation requires retreating the expansion screw, only the fixed nut of the expansion body is fixed, the nut on the T-shaped screw is continued to be arranged to rotate to make the expansion body be retreated from the wall body, reaching the purpose of retreating the expansion screw. The utility model has the beneficial effects of simple structure, low cost and strong applicability.
Description
Affiliated technical field
The utility model relates to a kind of body of wall fixing setscrew, the especially setscrew that expander is withdrawed from.
Background technique
At present, known setscrew is to be made of expander and T shape screw rod, in body of wall elder generation hole of preboring, then expander and T shape screw rod is put into the hole during use, when fixed object is connected with T shape screw rod, by the rotation of the nut on the T shape screw rod expander is expanded, reach fixation, because the big outside of expander and body of wall formation the inside is little, thereby cause whole setscrew can only fix once, if correct the hole point in the construction, setscrew is withdrawed from, cause waste and trouble.
Summary of the invention
In order to overcome the deficiency that existing setscrew can not withdraw from, the utility model provides a kind of setscrew, this setscrew not only can play the fixed object effect, and passes through to continue swivel nut when setscrew need withdraw from, and setscrew integral body is withdrawed from.
In order to reach the purpose of this utility model, the technological scheme that its technical problem that solves the utility model adopts is: by. screw thread, nut, expander, expansion hatch, T shape screw rod, T shape head constitute, it is characterized in that at set screw nut of the inner installation of the expander of setscrew, this nut is consistent with the screw thread on the T shape screw rod, installs just often the nut on the T shape screw rod to be screwed to get final product.When installation need be withdrawed from setscrew, as long as the set screw nut on the fixed expansion body, the nut rotation that continues on the dress T shape screw rod made expander withdraw from body of wall, reaches setscrew and withdraws from purpose.
The beneficial effects of the utility model are relatively simple for structure, and cost is cheaper, and practicability is stronger.
Description of drawings
The utility model is described in further detail below by drawings and Examples.
Fig. 1 is the utility model schematic representation.
1. screw threads among the figure, 2. nut, 3. nut, 4. expander 5. expansion hatches, 6.T shape screw rod, 7.T shape head.
Embodiment
Expander (4) go up is installed nut (3) and T shape screw rod (6) packs in the body of wall hole, by swivel nut (2) screw thread (1) on the T shape screw rod (6) is moved outwardly, when the mobile position makes T shape head (7) and expander (4) when bottom connection touches, expansion hatch (5) plays the opening effect, reaches fixedly purpose.In the time setscrew will being withdrawed from,, set screw nut (3) continuation swivel nut (2) withdraws from purpose as long as can reaching.
Claims (1)
1. setscrew that expander is withdrawed from, constitute by screw thread (1), nut (2), nut (3), expander (4), expansion hatch (5), T shape screw rod (6), T shape head (7), it is characterized in that the inner set screw nut (3) of installing of expander (4) at setscrew.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620134623 CN200964982Y (en) | 2006-08-02 | 2006-08-02 | Expansion screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620134623 CN200964982Y (en) | 2006-08-02 | 2006-08-02 | Expansion screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200964982Y true CN200964982Y (en) | 2007-10-24 |
Family
ID=38868998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620134623 Expired - Fee Related CN200964982Y (en) | 2006-08-02 | 2006-08-02 | Expansion screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200964982Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115978326A (en) * | 2022-12-12 | 2023-04-18 | 太仓太标汽车部件有限公司 | Mechanical anti-loosening flange fastening device of exhaust system and assembling method thereof |
-
2006
- 2006-08-02 CN CN 200620134623 patent/CN200964982Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115978326A (en) * | 2022-12-12 | 2023-04-18 | 太仓太标汽车部件有限公司 | Mechanical anti-loosening flange fastening device of exhaust system and assembling method thereof |
| CN115978326B (en) * | 2022-12-12 | 2024-04-16 | 太仓太标汽车部件有限公司 | Mechanical anti-loosening flange fastening device of exhaust system and assembly method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |