CN2385128Y - Expansion bolt - Google Patents
Expansion bolt Download PDFInfo
- Publication number
- CN2385128Y CN2385128Y CN 99228947 CN99228947U CN2385128Y CN 2385128 Y CN2385128 Y CN 2385128Y CN 99228947 CN99228947 CN 99228947 CN 99228947 U CN99228947 U CN 99228947U CN 2385128 Y CN2385128 Y CN 2385128Y
- Authority
- CN
- China
- Prior art keywords
- bolt
- screw bolt
- hole
- core
- expander
- 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 relates to an improved expansion screw bolt, which is provided with an expansion body 2 that is sheathed on the screw bolt 1. The bottom of the screw bolt 1 is connected with a bolt core 3 by screw threads. A groove 4 is arranged on the circumference at the tail part of the bolt core 3. The improved expansion screw bolt has the advantages that the screw bolt is injected into a wall body hole, and only a small part is exposed outside. The requirements of the expansion screw bolt to the hole are relatively low. Even if the hole is not punched to the standard, a use effect is not affected. The improved expansion screw bolt is characterized in convenient use, firmness, etc.
Description
The utility model relates to a kind of improved EXPANSION ANCHOR BOLTS.
Prior art, the bottom of bolt 1 is tapered, and its head is threaded, the outside of bolt 1 is with expander 2, during use, punches on body of wall earlier, then with in the bolt 1 injection wall body hole, load onto fixture, use nut screwing clamping again, its defective is in the bolt 1 injection wall body hole, have than one section that grows and expose the body of wall hole, hole on the body of wall is if beat nonstandardly, and the injection of bolt just has trouble, influences using effect.
The purpose of this utility model is the defective at above-mentioned existence, proposes a kind of improved EXPANSION ANCHOR BOLTS, and it can effectively overcome the defective that prior art exists.
Technical solution of the present utility model: expander 2 is arranged, and it is enclosed within on the bolt 1, and bolt 1 bottom thread coupling bar core 3 has groove 4 on the circumference of bolt core 3 afterbodys.
Advantage of the present utility model:
In the bolt 1 injection wall body hole, have only outside sub-fraction is exposed to, the requirement to the hole during use is lower, even if the hole beat and nonstandard, do not influence using effect yet.Convenient, firm.
Fig. 1 is an example structure schematic representation of the present utility model.
Fig. 2 is the structural representation of the bolt core afterbody among Fig. 1.
Further describe technical solution of the present utility model below in conjunction with accompanying drawing:
Expander 2 is enclosed within on the bolt 1, expander 2 is the garden cylindrical shell, wall thickness 1.5mm, material uses the A3 steel, its effect is the thrust load of frictional force role-taking on whole EXPANSION ANCHOR BOLTS of utilizing between drum outer wall and body of wall, it contains post core 3, bolt 1, post core 3 is the cone that a center is threaded the hole, afterbody has 4 uniform round recesseds 4, bolt core tapped hole and bolt 1 constitute a screw pair, the width of inserting expander 2 afterbodys in the groove 4 is the flange of 5mm, rotates together in company with bolt 1 in porthole to prevent bolt core 3, and the effect of bolt core 3 is under the pulling of bolt 1, expander 2 distendings, expander 2 is pasted tightly mutually with the porthole inwall, utilize the engaging force of 2 of bolt core 3 and expanders to bear axial tension simultaneously, bolt 1 is one to be formed by the master screw transformation of the way, its afterbody also can be produced a circular cone tail, be beneficial to screw in bolt core 3, bolt 1 directly contacts with fixture, and it is the part that connects fixture and EXPANSION ANCHOR BOLTS other parts.
When this EXPANSION ANCHOR BOLTS is used, should several circles of first pretension, make expander 2 distending slightly, tap down within the walls with hammering into shape then, again the tight a little several circles of EXPANSION ANCHOR BOLTS, tight after, bolt 1 is back-outed, make it pass the fixed hole of fixture, at last, bolt 1 is screwed in the expander 2, tightens and get final product.
Claims (1)
1. EXPANSION ANCHOR BOLTS has expander (2), and it is enclosed within on the bolt (1), it is characterized in that the bottom thread coupling bar core 3 of bolt (1), has groove (4) on the circumference of bolt core (3) afterbody.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99228947 CN2385128Y (en) | 1999-07-22 | 1999-07-22 | Expansion bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99228947 CN2385128Y (en) | 1999-07-22 | 1999-07-22 | Expansion bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2385128Y true CN2385128Y (en) | 2000-06-28 |
Family
ID=34018247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99228947 Expired - Fee Related CN2385128Y (en) | 1999-07-22 | 1999-07-22 | Expansion bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2385128Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101463854B (en) * | 2009-01-10 | 2013-05-15 | 金拯 | Expansion bolt |
-
1999
- 1999-07-22 CN CN 99228947 patent/CN2385128Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101463854B (en) * | 2009-01-10 | 2013-05-15 | 金拯 | Expansion bolt |
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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 |