CN201866049U - Half-thread bolt - Google Patents
Half-thread bolt Download PDFInfo
- Publication number
- CN201866049U CN201866049U CN2010202903630U CN201020290363U CN201866049U CN 201866049 U CN201866049 U CN 201866049U CN 2010202903630 U CN2010202903630 U CN 2010202903630U CN 201020290363 U CN201020290363 U CN 201020290363U CN 201866049 U CN201866049 U CN 201866049U
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- China
- Prior art keywords
- bolt
- bolt head
- utility
- model
- thread
- 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 half-thread bolt, which comprises a bolt head (1) and a bolt rod (2), wherein the bolt head (1) is connected with the bolt rod (2) as a whole; the bolt rod (2) comprises a polished rod section and a thread section; a through hole (3) is thoroughly formed in the centers of the bolt head (1) and the bolt rod (2) in the axial direction; and a pentangular counter bore (4) is arranged at the bolt head (1) and communicated with the through hole (3). The half-thread bolt provided by the utility model is hollow not solid, thereby saving material and lowering cost during manufacture and processing; additionally, the bolt head (1) provided by the utility model adopts the inner pentangular counter bore instead of the inner hexagon, the octagon, or the dodecagon in the prior art, so that a wrench is avoided from slipping during assembly and disassembly.
Description
Technical field
The utility model relates to a kind of bolt, particularly a kind of partial thread bolt.
Background technique
The partial thread bolt generally is made up of bolt head, screw rod, and screw rod comprises polished rod section and thread section.Partial thread bolt on the market all is solid, and promptly the screw rod of partial thread screw thread and bolt head all are solid, and the use material is more, manufacture cost is higher.The partial thread interior angle countersunk screw of prior art is generally even number of sides shape.Interior angle countersunk screw commonly used has specifications such as interior six, eight, 12 jiaos.Because the interior arm of angle number of bolt head is many more, approach circle more, when then using the internal corner bolt of spanner to carry out dismounting, be easy to generate skidding.
The model utility content
The technical problems to be solved in the utility model is, overcomes above deficiency, and a kind of partial thread bolt that is not easy to skid, can save material, reduces manufacture cost is provided.
In order to address the above problem, the technical solution of the utility model is: a kind of partial thread bolt, comprise bolt head and screw rod, described bolt head and screw rod are connected in one, described screw rod comprises polished rod section and thread section, the center of described bolt head and screw rod is prolonged and axially is through with through hole, and described bolt head is provided with five jiaos of counterbores, and described five jiaos of counterbores and described through hole connect.
After adopting above technological scheme, the utility model partial thread bolt compared with prior art has the following advantages: the bolt head of the utility model partial thread bolt and the center of screw rod are prolonged and axially are through with through hole, that is to say that the utility model partial thread bolt is hollow, rather than solid.This kind design when making the partial thread bolt, has been saved the use material, has been reduced manufacture cost.Bolt head of the present utility model is provided with five jiaos of counterbores, five angle gauge lattice just, rather than interior six, eight, the 12 angle gauge lattice of employing prior art, because the limit number of bolt head interior angle is many more, approach circle more, and five arm of angle shapes are lacked than the limit number of six, eight, 12 arm of angle shapes, then five jiaos limit than six, eight, the length on bihexagonal limit is longer, the area of contact of five jiaos of countersunk screws and corresponding spanner will increase then, therefore, when double screw bolt dismounting, just be not easy the phenomenon that occurs skidding.
In sum, the utility model compared with prior art has the advantage that is not easy to skid, can save material, reduces manufacture cost.
Description of drawings
Fig. 1 is the plan view of partial thread bolt;
Fig. 2 is the sectional drawing of partial thread bolt along A-A place among Fig. 1;
Fig. 3 is the left view of partial thread bolt bolt;
Fig. 4 is the right elevation of partial thread bolt bolt.
Shown in the figure: 1, bolt head, 2, screw rod, 3, through hole, 4, five jiaos of counterbores.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail:
Shown in Fig. 1 to 4, the utility model partial thread bolt, comprise bolt head 1 and screw rod 2, described bolt head 1 and screw rod 2 are connected in one, described screw rod 2 comprises polished rod section and thread section, the center of described bolt head 1 and screw rod 2 is prolonged and axially is through with through hole 3, and described bolt head 1 is provided with five jiaos of counterbores 4, and described five jiaos of counterbores 4 connect with described through hole 3.Above-mentioned five jiaos are interior pentagon.
Claims (1)
1. partial thread bolt, comprise bolt head (1) and screw rod (2), described bolt head (1) and screw rod (2) are connected in one, it is characterized in that: described screw rod (2) comprises polished rod section and thread section, the center of described bolt head (1) and screw rod (2) is prolonged and axially is through with through hole (3), described bolt head (1) is provided with five jiaos of counterbores (4), and described five jiaos of counterbores (4) connect with described through hole (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202903630U CN201866049U (en) | 2010-08-09 | 2010-08-09 | Half-thread bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202903630U CN201866049U (en) | 2010-08-09 | 2010-08-09 | Half-thread bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201866049U true CN201866049U (en) | 2011-06-15 |
Family
ID=44137205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202903630U Expired - Fee Related CN201866049U (en) | 2010-08-09 | 2010-08-09 | Half-thread bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201866049U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156437A (en) * | 2015-10-30 | 2015-12-16 | 广西中才铝业有限公司 | Multifunctional screw |
-
2010
- 2010-08-09 CN CN2010202903630U patent/CN201866049U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156437A (en) * | 2015-10-30 | 2015-12-16 | 广西中才铝业有限公司 | Multifunctional screw |
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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: 20110615 Termination date: 20140809 |
|
| EXPY | Termination of patent right or utility model |