CN203570801U - Twelve-head bolt - Google Patents
Twelve-head bolt Download PDFInfo
- Publication number
- CN203570801U CN203570801U CN201320539221.7U CN201320539221U CN203570801U CN 203570801 U CN203570801 U CN 203570801U CN 201320539221 U CN201320539221 U CN 201320539221U CN 203570801 U CN203570801 U CN 203570801U
- Authority
- CN
- China
- Prior art keywords
- bolt
- head
- screw rod
- positioning
- locating
- 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 a twelve-head bolt which comprises a bolt rear seat and a screw rod combined with the bolt rear seat. A bolt locating device is arranged on the end portion of the screw rod, the bolt rear seat is a prismoid with a cross section in a twelve-angle plum blossom shape, threads are arranged on part or all of the screw rod, and the locating device comprises a locating base, a locating supporting column and a locating head, wherein the locating base, the locating supporting column and the locating head are connected in sequence. The twelve-head bolt has the advantages that a taper structure is adopted in the front side of the bolt, the bolt is conveniently matched with a pre-buried movable nut, a twelve-head mode is adopted in the rear seat, and the bolt is not prone to slipping and being damaged.
Description
Technical field
The utility model relates to a kind of bihexagonal head screw.
Background technique
Domestic used bolt major part is hexagon head structure at present, and front is cylindrical.When mounted, the hexagon head destruction of easily skidding, cannot install this structural type.Front cylindrical structural coordinate with pre-buried traveling nut be not easy location, during installation fee.
Model utility content
The purpose of this utility model is exactly in order to address the above problem, and a kind of bihexagonal head screw is provided, and it has is convenient to coordinate with pre-buried traveling nut and the destruction advantage that is not easy to skid.
To achieve these goals, the utility model adopts following technological scheme:
A kind of bihexagonal head screw, the screw rod that comprises bolt back seat and be integrated with bolt back seat, the end of described screw rod is provided with taper bolt positioning device.
Described bolt back seat is that cross section is the prism of 12 jiaos of plum blossom shapes.
On described screw rod, be partly or entirely provided with screw thread.
Described positioning device comprises the positioning base, positioning pillars and the positioning head that connect successively.
Described positioning base is connected with screw rod end.
The longitudinal section of described positioning base is isosceles trapezoid, and cross-section is disc.
Described positioning pillars is cylindrical body.
The longitudinal section of described positioning head is isosceles trapezoid, and cross-section is disc.
The lower surface of described positioning base overlaps with screw rod end;
The upper surface of described positioning base overlaps with the lower surface of positioning pillars;
The upper surface of described positioning pillars overlaps with the lower surface of positioning head.
The beneficial effects of the utility model: this bolt front adopts cone structure, are convenient to coordinate with pre-buried traveling nut, and back seat is used bihexagonal head form, and destruction is not easy to skid.
Accompanying drawing explanation
Fig. 1 is the structural representation of this model utility;
Fig. 2 is the cross sectional representation of the bolt back seat of this model utility.
Wherein, 1, bolt back seat, 2, screw rod, 3, positioning device, 4, positioning base, 5, positioning pillars, 6, positioning head.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
As illustrated in fig. 1 and 2, a kind of bihexagonal head screw, the screw rod 2 that comprises bolt back seat 1 and be integrated with bolt back seat 1, the end of described screw rod 2 is provided with taper bolt positioning device 3.
Described bolt back seat 1 is that cross section is the prism of 12 jiaos of plum blossom shapes.
On described screw rod 2, be partly or entirely provided with screw thread.
Described positioning device 3 comprises the positioning base 4, positioning pillars 5 and the positioning head 6 that connect successively.
Described positioning base 4 is connected with screw rod 2 ends.
The longitudinal section of described positioning base 4 is isosceles trapezoid, and cross-section is disc.
Described positioning pillars 5 is cylindrical body.
The longitudinal section of described positioning head 6 is isosceles trapezoid, and cross-section is disc.
The lower surface of described positioning base 4 overlaps with screw rod 2 ends;
The upper surface of described positioning base 4 overlaps with the lower surface of positioning pillars 5;
The upper surface of described positioning pillars 5 overlaps with the lower surface of positioning head 6.
Although above-mentioned, by reference to the accompanying drawings embodiment of the present utility model is described; but the not restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection domain of the present utility model.
Claims (8)
1. a bihexagonal head screw, is characterized in that, the screw rod that comprises bolt back seat and be integrated with bolt back seat, and the end of described screw rod is provided with taper bolt positioning device; Described positioning device comprises the positioning base, positioning pillars and the positioning head that connect successively, and described positioning base is connected with screw rod end.
2. a kind of bihexagonal head screw as claimed in claim 1, is characterized in that, described bolt back seat is that cross section is the prism of 12 jiaos of plum blossom shapes.
3. a kind of bihexagonal head screw as claimed in claim 1, is characterized in that, is partly or entirely provided with screw thread on described screw rod.
4. a kind of bihexagonal head screw as claimed in claim 1, is characterized in that, the longitudinal section of described positioning base is isosceles trapezoid, and cross-section is disc.
5. a kind of bihexagonal head screw as claimed in claim 1, is characterized in that, described positioning pillars is cylindrical body.
6. a kind of bihexagonal head screw as claimed in claim 1, is characterized in that, the longitudinal section of described positioning head is isosceles trapezoid, and cross-section is disc.
7. a kind of bihexagonal head screw as claimed in claim 1, is characterized in that, the lower surface of described positioning base overlaps with screw rod end.
8. a kind of bihexagonal head screw as claimed in claim 1, is characterized in that, the upper surface of described positioning base overlaps with the lower surface of positioning pillars; The upper surface of described positioning pillars overlaps with the lower surface of positioning head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320539221.7U CN203570801U (en) | 2013-08-30 | 2013-08-30 | Twelve-head bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320539221.7U CN203570801U (en) | 2013-08-30 | 2013-08-30 | Twelve-head bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203570801U true CN203570801U (en) | 2014-04-30 |
Family
ID=50538533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320539221.7U Expired - Fee Related CN203570801U (en) | 2013-08-30 | 2013-08-30 | Twelve-head bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203570801U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757697A (en) * | 2018-06-28 | 2018-11-06 | 中国核动力研究设计院 | It is a kind of be easily achieved irradiation after underwater quick-speed dismounting connection structure and its assembly method |
-
2013
- 2013-08-30 CN CN201320539221.7U patent/CN203570801U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757697A (en) * | 2018-06-28 | 2018-11-06 | 中国核动力研究设计院 | It is a kind of be easily achieved irradiation after underwater quick-speed dismounting connection structure and its assembly method |
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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: 20140430 Termination date: 20140830 |
|
| EXPY | Termination of patent right or utility model |