CN203548496U - Double-bolt-head bolt preventing thread stripping - Google Patents
Double-bolt-head bolt preventing thread stripping Download PDFInfo
- Publication number
- CN203548496U CN203548496U CN201320680610.1U CN201320680610U CN203548496U CN 203548496 U CN203548496 U CN 203548496U CN 201320680610 U CN201320680610 U CN 201320680610U CN 203548496 U CN203548496 U CN 203548496U
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- Prior art keywords
- bolt head
- bolt
- head
- screw
- thread
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- Expired - Fee Related
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Abstract
The utility model relates to the field of fasteners, in particular to a double-bolt-head bolt preventing thread stripping. The bolt comprises a bolt head, a screw rod and a thread screwing portion, the bottom face of the bolt head extends downwards to form the screw rod, and the thread screwing portion is formed on the outer edge of the screw rod. The bolt head is formed by welding a first bolt head and a second bolt head, the first bolt head and the second bolt head are both hexagon bolt heads, the center of the first bolt head and the center of the second bolt head are arranged in the same perpendicular line, and the six edges of the first bolt head and the six edges of the second bolt head are arranged in a 360-degree rotation mode. An inner hexagon is arranged on the upper end face of the bolt head. Due to the fact that the first bolt head and the second bolt head are arranged on the screw rod, when the double-bolt-head bolt preventing the thread stripping needs to be fixedly connected in a narrow space and an outer hexagonal wrench is needed, the outer hexagonal wrench can rotate the double-bolt-head bolt preventing the thread stripping within the space range of 30 degrees to 60 degrees, and the double-bolt-head bolt preventing the thread stripping is made to be more convenient to use and more practical.
Description
Technical field
The utility model relates to fastener areas, particularly a kind of two bolt head bolts of anti-slip thread.
Background technique
Bolt is by head and a screw rod class fastening piece dimerous, need coordinate with nut, for being fastenedly connected two parts with through hole.This Connecting format claims bolt to connect.As nut is screwed off from bolt, can make again these two parts separately, therefore bolt connects, be to belong to removably connect.
Application number is that 201220343149.6 Chinese utility model patent discloses a kind of bolt arrangement, this bolt arrangement comprises screw rod and is located at the nut of the regular polygon of screw rod one end, at the screw rod the other end, be provided with positioning rod, the diameter of this positioning rod is less than the diameter of screw rod, and positioning rod length is also less than spiro rod length.This bolt arrangement is established positioning rod on screw rod, while making clamping bolt, positioning rod is inserted in screw and located, just can be fastening easily, needn't worry screw rod stripped thread and again to screw, but when outer-hexagonal bolt will be fixedly connected on will use outer hexagonal spanner in narrow space time, because the rotating range of outer hexagonal spanner is blocked in the restriction in space, make outer-hexagonal bolt installing or meet difficulty during dismounting.
Model utility content
The problem existing for prior art, the utility model provides a kind of two bolt head bolts of being convenient to use at small space the anti-slip thread of outer hexagonal spanner installation or removal.
The utility model for the technological scheme that its technical problem of solution adopts is,
Two bolt head bolts for anti-slip thread, the screw rod that comprise bolt head, extends to form from described bolt head bottom surface downwards and the screw thread being formed in described screw rod outer rim screw portion; It is characterized in that: described bolt head is welded to form by the first bolt head and the second bolt head, described the first bolt head and the second bolt head are hex head bolt head and both centers on same vertical line, and six limits of described the first bolt head and six limits of the second bolt head are 30 degree rotary setting; On the upper-end surface of described bolt head, be provided with an interior hexagonal; At screw thread, screw portion and be provided with guiding polished rod away from one end of bolt head, the size of described guiding polished rod is less than screw thread and screws the externally threaded interior tolerance diameter of portion.
Further, one end that described guiding polished rod screws portion away from screw thread is connected with a Hexagon boss, and the bottom surface of Hexagon boss is provided with screw-driver slot.
Further, described screw-driver slot inner concave shape is formed in the bottom surface of described Hexagon boss.
Further, described screw-driver slot is straight groove or cross recess.
Compared with prior art, two bolt head bolts of the utility model anti-slip thread have following advantage:
1, the utility model is owing to being provided with the first bolt head and the second bolt head on screw rod, like this when two bolt head bolts of anti-slip thread will be fixedly connected on will use outer hexagonal spanner in narrow space time, outer hexagonal spanner can be rotated by the two bolt head bolts to anti-slip thread in the space range of 30 degree to 60 degree, makes the more convenient practicality of two bolt head bolts of anti-slip thread.
2, the utility model screws portion at screw thread and designs one section of guiding polished rod that is less than bolt external thread diameter away from one end of bolt head, guiding polished rod carried out vertically-guided before bolt and tapped hole interlock, guarantee the vertically stressed of bolt, reduced the probability of screw thread stripped thread.
3, the utility model is provided with after interior hexagonal in bolt head, even if the distortion of the hex head bolt head of outside still can utilize interior hexagonal to carry out quick-detachment bolt, has increased the working life of bolt.
4, the utility model is by screw rod bottom surface, screw-driver slot being set, and in conjunction with original installing/dismounting portion---head, can realize multiple installation and removal mode simultaneously.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of two bolt head bolts of the utility model anti-slip thread.
In figure: 1, bolt head, 101, the first bolt head, 102, the second bolt head, 2, screw rod, 3, screw thread screws portion, 4, guiding polished rod, 5, Hexagon boss, 6, interior hexagonal.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with illustrating and specific embodiment, further set forth the utility model.
Two bolt head bolts of anti-slip thread as shown in Figure 1, the screw rod 2 that comprise bolt head 1, extends to form from described bolt head 1 bottom surface downwards and the screw thread being formed in described screw rod 2 outer rims screw portion 3; Described bolt head 1 is welded to form by the first bolt head 101 and the second bolt head 102, described the first bolt head 101 and the second bolt head 102 are hex head bolt head and both centers on same vertical line, and six limits of described the first bolt head 101 and six limits of the second bolt head 102 are 30 degree rotary setting.When two bolt head bolts of anti-slip thread will be fixedly connected on will use outer hexagonal spanner in narrow space time, outer hexagonal spanner can be rotated by the two bolt head bolts to anti-slip thread in the space range of 30 degree to 60 degree, makes the more convenient practicality of two bolt head bolts of anti-slip thread.
Described bolt head 1 is hex head bolt head, is provided with an interior hexagonal 6 on the upper-end surface of described bolt head 1; Even if the distortion of the hex head bolt head of outside, still can utilize interior hexagonal 6 to carry out quick-detachment bolt, increased the working life of bolt.
At screw thread, screw portion 3 and be provided with guiding polished rod 4 away from one end of bolt head 1, the size of described guiding polished rod 4 is less than screw thread and screws the externally threaded interior tolerance diameter of portion 3.Guiding polished rod 4 carried out vertically-guided before bolt and tapped hole interlock, had guaranteed the vertically stressed of bolt, reduced the probability of screw thread stripped thread.
One end that described guiding polished rod 4 screws portion 3 away from screw thread is connected with a Hexagon boss 5, and the bottom surface of Hexagon boss 5 is provided with screw-driver slot.Described screw-driver slot inner concave shape is formed in the bottom surface of described Hexagon boss 5.Described screw-driver slot is straight groove or cross recess.By in screw rod 2 bottom surfaces, screw-driver slot being set, simultaneously, in conjunction with original installing/dismounting portion---head, can realize multiple installation and removal mode.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; under the prerequisite that does not depart from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.
The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. two bolt head bolts for anti-slip thread, the screw rod (2) that comprise bolt head (1), extends to form from described bolt head (1) bottom surface downwards and the screw thread being formed in described screw rod (2) outer rim screw portion (3); It is characterized in that: described bolt head (1) is welded to form by the first bolt head (101) and the second bolt head (102), described the first bolt head (101) and the second bolt head (102) are hex head bolt head and both centers on same vertical line, and six limits of described the first bolt head (101) and six limits of the second bolt head (102) are 30 degree rotary setting; On the upper-end surface of described bolt head (1), be provided with an interior hexagonal (6); At screw thread, screw portion (3) and be provided with guiding polished rod (4) away from one end of bolt head (1), the size of described guiding polished rod (4) is less than screw thread and screws the externally threaded interior tolerance diameter of portion (3).
2. two bolt head bolts of anti-slip thread according to claim 1, it is characterized in that: one end that described guiding polished rod (4) screws portion (3) away from screw thread is connected with a Hexagon boss (5), and the bottom surface of Hexagon boss (5) is provided with screw-driver slot.
3. two bolt head bolts of anti-slip thread according to claim 2, is characterized in that: described screw-driver slot inner concave shape is formed in the bottom surface of described Hexagon boss (5).
4. according to two bolt head bolts of the anti-slip thread described in claim 2 or 3, it is characterized in that: described screw-driver slot is straight groove or cross recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320680610.1U CN203548496U (en) | 2013-10-30 | 2013-10-30 | Double-bolt-head bolt preventing thread stripping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320680610.1U CN203548496U (en) | 2013-10-30 | 2013-10-30 | Double-bolt-head bolt preventing thread stripping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203548496U true CN203548496U (en) | 2014-04-16 |
Family
ID=50466619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320680610.1U Expired - Fee Related CN203548496U (en) | 2013-10-30 | 2013-10-30 | Double-bolt-head bolt preventing thread stripping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203548496U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194953A (en) * | 2016-08-29 | 2016-12-07 | 苏州市顺仪五金有限公司 | A kind of double-threaded screw |
| CN108757685A (en) * | 2018-08-16 | 2018-11-06 | 嘉兴同辉汽配有限公司 | A kind of automotive hub antirust bolt |
| CN113586577A (en) * | 2021-07-01 | 2021-11-02 | 浙江意动科技股份有限公司 | Double-bolt head bolt of anti-skid thread |
-
2013
- 2013-10-30 CN CN201320680610.1U patent/CN203548496U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194953A (en) * | 2016-08-29 | 2016-12-07 | 苏州市顺仪五金有限公司 | A kind of double-threaded screw |
| CN108757685A (en) * | 2018-08-16 | 2018-11-06 | 嘉兴同辉汽配有限公司 | A kind of automotive hub antirust bolt |
| CN113586577A (en) * | 2021-07-01 | 2021-11-02 | 浙江意动科技股份有限公司 | Double-bolt head bolt of anti-skid thread |
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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: 20140416 Termination date: 20141030 |
|
| EXPY | Termination of patent right or utility model |