CN203655835U - Anti-seizure bolt with double hexagon bolt heads - Google Patents
Anti-seizure bolt with double hexagon bolt heads Download PDFInfo
- Publication number
- CN203655835U CN203655835U CN201320831039.9U CN201320831039U CN203655835U CN 203655835 U CN203655835 U CN 203655835U CN 201320831039 U CN201320831039 U CN 201320831039U CN 203655835 U CN203655835 U CN 203655835U
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- Prior art keywords
- bolt
- guide rod
- head
- bolt head
- screw
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- Expired - Fee Related
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Abstract
The utility model relates to an anti-seizure bolt with double hexagon bolt heads. The bolt comprises the bolt heads, a screw rod and a thread screwing part. The bolt heads are formed by welding the first hexagon bolt head and the second hexagon bolt, and the outer diameter of the first hexagon bolt head is smaller than that of the second hexagon bolt head. A guide rod is arranged at one end, away from the bolt heads, of the thread screwing part, and a guide rod thread screwing part formed on the outer edge of the guide rod is arranged on the guide rod. Relative to a screw rod thread ridge, a guide rod thread ridge formed on the guide rod thread threading part is of a reverse thread structure. Because the bolt heads are formed by welding the first hexagon bolt head and the second hexagon bolt head which have different outer diameters, when the bolt is wrenched, two specifications of wrenches can be used, and the bolt can well adapt to the wrenches. Meanwhile, when the bolt inclines, a female thread component cannot be screwed in, the female thread component cannot be screwed in any more when the bolt is not suitable, and thus the purposes of preventing seizure and blocking rolling of the bolt are achieved.
Description
Technical field
The utility model relates to fastener areas, particularly a kind of anti-two hex head bolt hook bolts of killing.
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 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, if but bolt tilts larger with respect to box thread member, 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.Due to the general only applicable a kind of specification spanner of outer-hexagonal size of bolt head, in the time turning, can only adopt a kind of spanner of specification simultaneously, poor for applicability.
Model utility content
The problem existing for prior art, the utility model provides one can prevent from reliably itself from being killed or blocking and roll, the anti-two hex head bolt hook bolts of killing that again can suitable for various size spanner turn.
The utility model for the technological scheme that its technical problem of solution adopts is,
Anti-two hex head bolt hook bolts of killing, 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 hex head bolt head and the second hex head bolt head, and the first hex head bolt head and screw rod are fixedly connected on respectively in the both ends of the surface up and down of described the second hex head bolt head, and the external diameter of the first hex head bolt head is less than the second hex head bolt head; On the upper-end surface of described the first hex head bolt head, be cut 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.
Further, be fixed with annular shell fragment at the screw rod of described the second hex head bolt head on face, the center of described annular shell fragment is towards screw rod direction protuberance, and described screw rod runs through annular shell fragment.
Compared with prior art, the anti-two hex head bolt hook bolts of killing of the utility model have following advantage:
1, bolt head of the present utility model is welded by the first hex head bolt head and the second hex head bolt head of various outer diameter, in the time pulling, is suitable for the spanner of two kinds of specifications, and applicability is good.
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.
4, the screw rod of bolt head described in the utility model is fixed with annular shell fragment on face, and swell towards screw rod direction at the center of described annular shell fragment.Therefore be connected part when fixing by this pair of hex head bolt hook bolt by two, the annular elastomeric sector-meeting of the screw rod of its bolt head on face starts to contact a side surface that is connected part, along with further tightening of this pair of hex head bolt hook bolt, annular shell fragment 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.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of the anti-two hex head bolt hook bolts of killing of the utility model.
Fig. 2 is the plan structure schematic diagram of the anti-two hex head bolt hook bolts of killing of the utility model.
In figure: 1, bolt head, 101, the first hex head bolt head, 102, the second hex head bolt head, 2, screw rod, 3, screw thread screws portion, and 31, screw flight ridge, 4, annular shell fragment, 5, guide rod screw thread screws portion, 51, guide rod thread ridges, 6, inner hexagonal hole, 7, guide 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.
Anti-two hex head bolt hook bolts of killing as shown in Figure 1 and Figure 2, 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 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 hex head bolt head 101 and the second hex head bolt head 102, the first hex head bolt head 101 and screw rod 2 are fixedly connected on respectively in the both ends of the surface up and down of described the second hex head bolt head 102, and the external diameter of the first hex head bolt head 101 is less than the second hex head bolt head 102.Bolt head 1 of the present utility model is welded by the first hex head bolt head 101 and the second hex head bolt head 102 of various outer diameter, in the time pulling, is suitable for the spanner of two kinds of specifications, and applicability is good.
On the upper-end surface of described the first hex head bolt head 101, be cut with an inner hexagonal hole 6.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 7 away from one end of bolt head 1, the diameter of described guide rod 7 is less than the diameter of screw rod 2, is provided with the guide rod screw thread being formed in described guide rod 7 outer rims and screws portion 5 on described guide rod 7; 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 7 of bolt disturbs with the box thread part of box thread member, or guide rod 7 occurs to disturb and guide rod 7 on the guide rod thread ridges 51 that forms and the box thread of box thread member intermesh.If guide rod 7 just and box thread part disturb, bolt after enter in box thread member.Next, if the guide rod thread ridges 51 of guide rod 7 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 7 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.
On face, be fixed with annular shell fragment 4 at the screw rod 2 of described the second hex head bolt head 102, 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.Prevent that by basis two hex head bolt hook bolts of killing are connected part when fixing by two soon, the annular shell fragment 4 of the screw rod 2 of its second hex head bolt head 102 on face can start to contact a side surface that is connected part, along with further tightening of these anti-two hex head bolt hook bolts of killing, 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.
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 (2)
1. anti-two hex head bolt hook bolts of killing, 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 hex head bolt head (101) and the second hex head bolt head (102), the first hex head bolt head (101) and screw rod (2) are fixedly connected on respectively in the both ends of the surface up and down of described the second hex head bolt head (102), and the external diameter of the first hex head bolt head (101) is less than the second hex head bolt head (102); On the upper-end surface of described the first hex head bolt head (101), be cut with an inner hexagonal hole (6);
Screw portion (3) at described screw thread and be provided with a guide rod (7) away from one end of bolt head (1), the diameter of described guide rod (7) is less than the diameter of screw rod (2), is provided with the guide rod screw thread being formed in described guide rod (7) outer rim and screws portion (5) on described guide rod (7); 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.
2. anti-two hex head bolt hook bolts of killing according to claim 1, it is characterized in that: the screw rod (2) at described the second hex head bolt head (102) 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).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320831039.9U CN203655835U (en) | 2013-12-16 | 2013-12-16 | Anti-seizure bolt with double hexagon bolt heads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320831039.9U CN203655835U (en) | 2013-12-16 | 2013-12-16 | Anti-seizure bolt with double hexagon bolt heads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203655835U true CN203655835U (en) | 2014-06-18 |
Family
ID=50922226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320831039.9U Expired - Fee Related CN203655835U (en) | 2013-12-16 | 2013-12-16 | Anti-seizure bolt with double hexagon bolt heads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203655835U (en) |
-
2013
- 2013-12-16 CN CN201320831039.9U patent/CN203655835U/en not_active Expired - Fee Related
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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: 20140618 Termination date: 20141216 |
|
| EXPY | Termination of patent right or utility model |