CN2408291Y - Expanding bolt - Google Patents
Expanding bolt Download PDFInfo
- Publication number
- CN2408291Y CN2408291Y CN 99230551 CN99230551U CN2408291Y CN 2408291 Y CN2408291 Y CN 2408291Y CN 99230551 CN99230551 CN 99230551 CN 99230551 U CN99230551 U CN 99230551U CN 2408291 Y CN2408291 Y CN 2408291Y
- Authority
- CN
- China
- Prior art keywords
- nut
- screw bolt
- bolt
- expansion screw
- hollow bushing
- 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 an expansion screw bolt, which is composed of a hollow casing tube, of which at least one end is provided with a gap, the screw bolt, and a nut, wherein, the tail end of the nut is in a circular table shape, and a diameter of a small end is smaller than the inside diameter of the hollow casing tube. An assembly structure of the traditional expansion screw bolts that the nut is exposed outside and the screw bolt is inverted is changed by the expansion screw bolt. The expansion screw bolt has the advantages of tidiness, beautiful appearance, and no obstruction on the premise that manufacturing cost is not increased and service performance is not reduced. The expansion screw bolt can be welcomed surely after popularized.
Description
The utility model relates to a kind of bolt, the EXPANSION ANCHOR BOLTS of industry practicalities such as especially a kind of building, decoration.
Bolt and nut combinations that a hollow bushing that traditional expansion bolt is cracked by an end and an end are the back taper dress form.Because the sleeve pipe of back taper support distending seam that can be by bolt when screwing nut, therefore can the wedge embedding and take root on bases such as firm wall, ground, be extensive use of in all conglomeraties relevant with building, decoration.Yet, the problem that existing EXPANSION ANCHOR BOLTS in use exists the bolt thread head to expose always, not only very not attractive in appearance, and usually hinder further construction, cause many troubles.
The purpose of this utility model is: the problem that exists at above-mentioned existing EXPANSION ANCHOR BOLTS, when proposing a kind of screwing, the termination is the concordant EXPANSION ANCHOR BOLTS in the surface substantially, thereby guarantees attractive in appearancely, brings convenience to construction.
In order to achieve the above object, the hollow bushing that EXPANSION ANCHOR BOLTS of the present utility model is cracked by at least one end, bolt and nut are formed, and wherein the tail end of nut is round table-like, and end diameter is less than the hollow bushing internal diameter.
During use, the small end of nut is facing to the hollow bushing end that cracks, and hollow bushing is placed in the pre-manufactured hole on the basis together with nut, and inserting bolt makes it to screw with nut again.At this moment, the conical surface of nut struts hollow bushing gradually, till wedge embedding stretching.In this process, because the threaded end of bolt is inserted in the hole all the time, and with constantly screwing and go deep into gradually at the bottom of the hole, so surface of base only stays bolt head, and promptly neat appearance has no again to hinder.
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is an embodiment's of the utility model a structural representation.
EXPANSION ANCHOR BOLTS among Fig. 1 is made up of hollow bushing 1, hexagon head bolt 2 and nut 3.Wherein, the two ends of hollow bushing 1 have the interlaced line of rabbet joint, and during use, the line of rabbet joint of an end makes hollow bushing 1 be able to distending under the effect of the conical surface, and the line of rabbet joint of the other end can prevent that hollow bushing 1 from rotating.Nut 3 be shaped as frustoconic shape, its end diameter is less than the internal diameter of hollow bushing 1.
During use, as shown in Figure 1, the small end of nut 3 is placed in the pre-manufactured hole on the wall together facing to hollow bushing 1, inserting bolt 2 again, make it to screw with nut 3.As a result, the conical surface of nut 3 supports distending gradually with hollow bushing 1, with pre-manufactured hole inwall stretching.Final wall surface only stays bolt head, does not promptly affect the appearance, and does not also hinder follow-up work.Be not difficult to find out that the EXPANSION ANCHOR BOLTS of present embodiment changes that the conventional expanded bolt and nut exposes, the inverted assembly structure of bolt, not increasing manufacture cost, not reducing under the prerequisite of usability, for the user brings many benefits.Therefore, after the popularization, will receive an acclaim.
In addition to the implementation, the utility model also has many other mode of executions, and for example bolt head can be made countersunk head, can make the EXPANSION ANCHOR BOLTS termination after screwing concordant fully with the surface like this.All similar replacements are protection domain of the present utility model.
Claims (3)
1. an EXPANSION ANCHOR BOLTS is made up of hollow bushing, bolt and nut that at least one end cracks, and it is characterized in that: the tail end of described nut is round table-like, and end diameter is less than the hollow bushing internal diameter.
2. EXPANSION ANCHOR BOLTS according to claim 1 is characterized in that: the two ends of described hollow bushing have the interlaced line of rabbet joint.
3. EXPANSION ANCHOR BOLTS according to claim 1 is characterized in that: described bolt is made countersunk head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99230551 CN2408291Y (en) | 1999-12-28 | 1999-12-28 | Expanding bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99230551 CN2408291Y (en) | 1999-12-28 | 1999-12-28 | Expanding bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2408291Y true CN2408291Y (en) | 2000-11-29 |
Family
ID=34019639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99230551 Expired - Fee Related CN2408291Y (en) | 1999-12-28 | 1999-12-28 | Expanding bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2408291Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864250A (en) * | 2016-04-29 | 2016-08-17 | 国家电网公司 | Expansion screw |
-
1999
- 1999-12-28 CN CN 99230551 patent/CN2408291Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864250A (en) * | 2016-04-29 | 2016-08-17 | 国家电网公司 | Expansion screw |
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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 |