CN203627483U - Double-bolt-head bolt - Google Patents
Double-bolt-head bolt Download PDFInfo
- Publication number
- CN203627483U CN203627483U CN201320832382.5U CN201320832382U CN203627483U CN 203627483 U CN203627483 U CN 203627483U CN 201320832382 U CN201320832382 U CN 201320832382U CN 203627483 U CN203627483 U CN 203627483U
- Authority
- CN
- China
- Prior art keywords
- bolt
- bolt head
- head
- guide rod
- 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 relates to a double-bolt-head bolt. The bolt comprises a bolt head, a screw rod and a thread screwing part, wherein the bolt head is composed of a first bolt head and a second bolt head in a welded mode, and six sides of the first bolt head and six sides of the second bolt head are arranged in a 30-degree rotation mode; one end, far away from the bolt head, of the thread screwing part is provided with a guide rod, a guide rod thread screwing part is arranged on the guide rod, and a guide rod thread ridge opposite to a thread structure of a thread ridge of the screw rod is arranged on the guide rod thread screwing part. According to the double-bolt-head bolt, due to the fact that the first bolt head and the second bolt head are arranged on the screw rod, the double-bolt-head bolt can be made to rotate by an outer hexagon wrench within the space range from 30 degrees to 60 degrees, and therefore the double-bolt-head bolt is more convenient to use and more practical. Meanwhile, when the bolt inclines, the bolt can not be screwed into a female thread component, the bolt can not be screwed into the female thread component any more under improper conditions, and therefore seizure and clamping roll of the bolt are prevented.
Description
Technical field
The utility model relates to fastener areas, particularly a kind of two bolt head bolt.
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, be to belong to removably connect therefore bolt connects.
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, be provided with positioning rod at the screw rod the other end, 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 when dismounting.If bolt tilts larger with respect to box thread member simultaneously, bolt may its attitude suitably not guided in the time screwing in the box thread portion of box thread member, that is to say, bolt keeps tilting, may in the time screwing in box thread member, depart from the problem of thread pitch with regard to having produced bolt, also may produce thus and to kill and card rolls.
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 outer hexagonal spanner installation or removal, and this bolt prevents from itself from being killed or blocking and roll in box thread member reliably.
The utility model for the technological scheme that its technical problem of solution adopts is,
A kind of two bolt head bolt, 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, and screw thread screws portion and on screw rod, forms screw flight ridge; 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 inner hexagonal hole;
Screw portion at described screw thread and be provided with a guide rod away from one end of bolt head, the diameter of described guide rod is less than the diameter of screw rod, is provided with the guide rod screw thread being formed in described guide rod outer rim and screws portion on described guide rod; With respect to described screw flight ridge, be formed on the guide rod thread ridges that described guide rod screw thread screws in portion and be formed reverse thread structure.
Compared with prior art, the two bolt head bolts of the utility model 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 will be fixedly connected on will use outer hexagonal spanner in narrow space time, outer hexagonal spanner can be rotated two bolt head bolts in the space range of 30 degree to 60 degree, makes two more convenient practicalities of bolt head bolt.
2, the utility model is provided with the guide rod screw thread being formed in described guide rod outer rim and screws portion on guide rod; With respect to described screw flight ridge, be formed on the guide rod thread ridges that described guide rod screw thread screws in portion and be formed reverse thread structure.Can not precession box thread member in the time of tilt bolt, so bolt again can revolve box thread member in inappropriate situation.Therefore, can prevent reliably bolt kill and card rolls.
3, the utility model is provided with after inner hexagonal hole in bolt head, even if the distortion of the hex head bolt head of outside still can utilize inner hexagonal hole to carry out quick-detachment bolt, has increased the working life of bolt.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of the two bolt head bolts of the utility model.
In figure: 1, bolt head, 101, the first bolt head, 102, the second bolt head, 2, screw rod, 3, screw thread screws portion, 31, screw flight ridge, 4, guide rod, 5, guide rod screw thread screws portion, 51, guide rod thread ridges, 6, inner hexagonal hole.
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 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, and screw thread screws portion 3 and on screw rod 2, forms screw flight ridge 31.
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 will be fixedly connected on will use outer hexagonal spanner in narrow space time, outer hexagonal spanner can be rotated two bolt head bolts in the space range of 30 degree to 60 degree, makes two more convenient practicalities of bolt head bolt.
Described bolt head 1 is hex head bolt head, is provided with an inner hexagonal hole 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 inner hexagonal hole 6 to carry out quick-detachment bolt, increase the working life of bolt.
Screw portion 3 at described screw thread and be provided with a guide rod 4 away from one end of bolt head 1, the diameter of described guide rod 4 is less than the diameter of screw rod 2, is provided with the guide rod screw thread being formed in described guide rod 4 outer rims and screws portion 5 on described guide rod 4; With respect to described screw flight ridge 31, be formed on the guide rod thread ridges 51 that described guide rod screw thread screws in portion 5 and be formed reverse thread structure.
When this tilt bolt while inserting box thread part, the guide rod 4 of bolt disturbs with the box thread part of box thread member, or guide rod 4 occurs to disturb and guide rod 4 on the guide rod thread ridges 51 that forms and the box thread of box thread member intermesh.If guide rod 4 just and box thread part disturb, bolt after enter in box thread member.Next, if the guide rod thread ridges 51 of guide rod 4 engages with box thread, in the time that bolt screws in the direction rotation of box thread member, because the guide rod thread ridges 51 with reverse thread structure of guide rod 4 and the engagement of box thread part are exited bolt from box thread member, reach and prevented that bolt from killing and blocking the object of rolling.
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 (1)
1. a two bolt head bolt, the screw rod (2) that comprises bolt head (1), extend 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), and screw thread screws portion (3) at the upper screw flight ridge (31) that forms of screw rod (2); 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 inner hexagonal hole (6);
Screw portion (3) at described screw thread and be provided with a guide rod (4) away from one end of bolt head (1), the diameter of described guide rod (4) is less than the diameter of screw rod (2), is provided with the guide rod screw thread being formed in described guide rod (4) outer rim and screws portion (5) on described guide rod (4); With respect to described screw flight ridge (31), be formed on the guide rod thread ridges (51) that described guide rod screw thread screws in portion (5) and be formed reverse thread structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320832382.5U CN203627483U (en) | 2013-12-16 | 2013-12-16 | Double-bolt-head bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320832382.5U CN203627483U (en) | 2013-12-16 | 2013-12-16 | Double-bolt-head bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203627483U true CN203627483U (en) | 2014-06-04 |
Family
ID=50813966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320832382.5U Expired - Fee Related CN203627483U (en) | 2013-12-16 | 2013-12-16 | Double-bolt-head bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203627483U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112262268A (en) * | 2018-06-13 | 2021-01-22 | 株式会社托普拉 | External thread component |
-
2013
- 2013-12-16 CN CN201320832382.5U patent/CN203627483U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112262268A (en) * | 2018-06-13 | 2021-01-22 | 株式会社托普拉 | External thread component |
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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: 20140604 Termination date: 20141216 |
|
| EXPY | Termination of patent right or utility model |