CN203548490U - Hexagonal head bolt preventing thread stripping - Google Patents
Hexagonal head bolt preventing thread stripping Download PDFInfo
- Publication number
- CN203548490U CN203548490U CN201320678832.XU CN201320678832U CN203548490U CN 203548490 U CN203548490 U CN 203548490U CN 201320678832 U CN201320678832 U CN 201320678832U CN 203548490 U CN203548490 U CN 203548490U
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- CN
- China
- Prior art keywords
- bolt
- screw
- screw rod
- head
- bolt head
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- 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 the field of fasteners, in particular to a hexagonal 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 a hexagonal bolt head, and an inner hexagon is arranged at the position, away from a screw rod facing face, inside the bolt head. An annular elastic sheet is fixed to the screw rod facing face of the bolt head, the center of the annular elastic sheet protrudes towards the screw rod, and the screw rod penetrates through the annular elastic sheet. A guide polished rod is arranged at the end, away from the bolt head, of the thread screwing portion, and the size of the guide polished rod is smaller than inner tolerance diameter of the outer threads of the thread screwing portion. The guide polished rod smaller than the diameter of the outer threads of the screw rod is designed at the end, away from the bolt head, of the thread screwing portion, the guide polished rod carries out vertical guidance before the bolt is meshed with a threaded hole, the vertical stress of the bolt is guaranteed, and the probability of the thread stripping is reduced.
Description
Technical field
The utility model relates to fastener areas, particularly a kind of hexagon head bolt of anti-screw thread stripped 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 201320017427.3 Chinese utility model patent discloses a kind of hex head bolt, comprises bolt head and screw rod, and the end face of described bolt head is arc shaped surface, and the screw rod of described bolt head is fixed with annular shell fragment on face.Although this hex head bolt can be by the distortion of annular shell fragment, make two to be connected and between part, to remain certain tension force, guarantee two connective stabilities that are connected between part, but in fastening operating process, thereby the vertical strength that can not guarantee bolt and tapped hole causes oblique loading or operator to lack experience or is firmly excessive, cause fragile tapped hole stripped thread.
Model utility content
The problem existing for prior art, the utility model provides one to make to carry out guide-localization before bolt and hole threaded engagement, thereby can effectively reduce to tilt and oblique loading probability reaches the hexagon head bolt of the anti-screw thread stripped thread of minimizing tapped hole stripped thread.
The utility model for the technological scheme that its technical problem of solution adopts is,
A hexagon head bolt for anti-screw thread stripped 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 hex head bolt head, it is provided with an interior hexagonal towards the inside of face away from screw rod; Screw rod at described bolt head is fixed with annular shell fragment on face, and the center of described annular shell fragment is towards screw rod direction protuberance, and described screw rod runs through annular shell fragment; 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, the hexagon head bolt of the anti-screw thread stripped thread of the utility model has following advantage:
1, 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.
2, 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.
3, 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 the hexagon head bolt of the anti-screw thread stripped thread of the utility model.
Fig. 2 is the left TV structure schematic diagram of the hexagon head bolt of the anti-screw thread stripped thread of the utility model.
In figure: 1, bolt head, 2, screw rod, 3, screw thread screws portion, 4, annular shell fragment, 5, Hexagon boss, 6, interior hexagonal, 7, guiding polished rod.
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.
The hexagon head bolt of anti-screw thread stripped thread as shown in Figure 1 and Figure 2, 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 hex head bolt head, and it is provided with an interior hexagonal 6 towards the inside of face away from screw rod 2; 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 the screw rod 2 of described bolt head 1, be fixed with annular shell fragment 4 on face, the center of described annular shell fragment 4 is towards screw rod 2 direction protuberances, and described screw rod 2 runs through annular shell fragment 4.Hexagon head bolt by this anti-screw thread stripped thread is connected part when fixing by two soon, the annular shell fragment 4 of the screw rod 2 of its bolt head 1 on face can start to contact a side surface that is connected part, along with further tightening of the hexagon head bolt of this anti-screw thread stripped thread, annular shell fragment 4 in above-mentioned will start distortion, thereby produce a rebounding force to being connected part, being finally two is connected between part and remains and guarantee two connective stabilities that are connected between part by certain tension force.
At screw thread, screw portion 3 and be provided with guiding polished rod 7 away from one end of bolt head 1, the size of described guiding polished rod 7 is less than screw thread and screws the externally threaded interior tolerance diameter of portion 3.Guiding polished rod 7 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 7 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. a hexagon head bolt for anti-screw thread stripped 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 hex head bolt head, and it is provided with an interior hexagonal (6) towards the inside of face away from screw rod (2); Screw rod (2) in described bolt head (1) is fixed with annular shell fragment (4) on face, the center of described annular shell fragment (4) is towards screw rod (2) direction protuberance, and described screw rod (2) runs through annular shell fragment (4); At screw thread, screw portion (3) and be provided with guiding polished rod (7) away from one end of bolt head (1), the size of described guiding polished rod (7) is less than screw thread and screws the externally threaded interior tolerance diameter of portion (3).
2. the hexagon head bolt of anti-screw thread stripped thread according to claim 1, it is characterized in that: one end that described guiding polished rod (7) 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. the hexagon head bolt of anti-screw thread stripped 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 the hexagon head bolt of the anti-screw thread stripped 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 |
|---|---|---|---|
| CN201320678832.XU CN203548490U (en) | 2013-10-30 | 2013-10-30 | Hexagonal head bolt preventing thread stripping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320678832.XU CN203548490U (en) | 2013-10-30 | 2013-10-30 | Hexagonal head bolt preventing thread stripping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203548490U true CN203548490U (en) | 2014-04-16 |
Family
ID=50466613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320678832.XU Expired - Fee Related CN203548490U (en) | 2013-10-30 | 2013-10-30 | Hexagonal head bolt preventing thread stripping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203548490U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822649A (en) * | 2016-05-11 | 2016-08-03 | 张斐斐 | Positioning screw with good positioning performance for panel of warp knitting machine |
| CN105909645A (en) * | 2016-06-27 | 2016-08-31 | 湖北富亿农业机械制造有限公司 | Rotary support connecting device of excavator |
| CN108799300A (en) * | 2018-08-16 | 2018-11-13 | 嘉兴同辉汽配有限公司 | A kind of rotation stop formula boss bolt |
-
2013
- 2013-10-30 CN CN201320678832.XU patent/CN203548490U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822649A (en) * | 2016-05-11 | 2016-08-03 | 张斐斐 | Positioning screw with good positioning performance for panel of warp knitting machine |
| CN105909645A (en) * | 2016-06-27 | 2016-08-31 | 湖北富亿农业机械制造有限公司 | Rotary support connecting device of excavator |
| CN108799300A (en) * | 2018-08-16 | 2018-11-13 | 嘉兴同辉汽配有限公司 | A kind of rotation stop formula boss bolt |
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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 |