CN210830056U - Anti-loosening bolt - Google Patents
Anti-loosening bolt Download PDFInfo
- Publication number
- CN210830056U CN210830056U CN201921534211.8U CN201921534211U CN210830056U CN 210830056 U CN210830056 U CN 210830056U CN 201921534211 U CN201921534211 U CN 201921534211U CN 210830056 U CN210830056 U CN 210830056U
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- bolt
- head
- screw rod
- loosening
- nut
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Abstract
The utility model provides a loose-proof bolt, which comprises a bolt head and a screw rod; the auxiliary wrenching structure of the power-assisted structure is processed on the bolt head, and the limit and structure are processed on the screw rod. The utility model discloses a according to the spacer pin on the bolt, make the bolt can be applicable to the nut or from threaded device, with the assembly after spacer pin and the bolt separately processing, make its processing degree of difficulty reduce and practiced thrift the processing cost.
Description
Technical Field
The utility model relates to an anti-loosening bolt.
Background
In the use process of the bolt, in order to prevent the falling, a plurality of lock nuts and bolts are firstly appeared, for example, an anti-falling bolt assembly with the publication number of CN206929183U, vertical threaded holes are processed on the bolt and the nut, after the nut is screwed, a small bolt is used for screwing the threaded holes on the nut and the bolt to prevent the nut from falling off, but in the process of screwing the nut, the threaded holes on the nut and the bolt are mutually corresponding, and for example, an anti-falling bolt with the publication number of CN103423281A is provided with a pin hole at the head of a screw rod, after the nut is screwed, a pin is inserted into the pin hole to prevent the nut from loosening, the limiting force that the nut can be contacted with the pin to obtain the pin after the nut is screwed can not be ensured, and meanwhile, the anti-falling effect can not be obtained if the anti-falling bolt assembly with the publication number of CN206929183U is used.
In order to be used in equipment with internal threads, a plurality of manufacturers process a structure for preventing the screw from loosening on the screw, and the structures are not integrally processed, so that the processing difficulty is high. Increasing the manufacturing cost.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an anti-loosening bolt.
The utility model discloses a following technical scheme can realize.
The utility model provides a loose-proof bolt, which comprises a bolt head and a screw rod; the auxiliary wrenching structure of the power-assisted structure is processed on the bolt head, and the limit and structure are processed on the screw rod.
The bolt head is an external wrenching bolt head, and the wrenching head is of a regular polygonal shape.
The power-assisted structure is a power-assisted hole which is processed on the wrenching head on the bolt head.
The power-assisted hole is processed on the side face of the pulling and twisting head and in the center between two adjacent corners of the pulling and twisting head.
The limiting structure prevents the nut from loosening and limits the nut by increasing the friction force between the bolt and the nut.
The limiting structure is a limiting pin fixed on the screw rod.
The limiting pin is arranged in a blind hole which is vertically processed on the side surface of the screw rod.
The height of the tail end of the limiting pin is greater than that of the threads on the screw rod.
The limiting pin is made of nylon.
And the tail end of the screw is also provided with a positioning head.
The beneficial effects of the utility model reside in that: through according to the spacer pin on the bolt, make the bolt can be applicable to the nut or from threaded device, assemble behind separate processing with spacer pin and bolt, make its processing degree of difficulty reduce and practiced thrift the processing cost.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the structure of the blind hole of the present invention;
in the figure: 1-bolt head, 2-limit pin, 3-blind hole, 4-wrenching head, 41-power-assisted hole, 5-screw rod and 51-positioning head.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
An anti-loosening bolt comprises a bolt head 1 and a screw rod 5; the bolt head 1 is provided with an auxiliary pulling and screwing structure with a power assisting structure, and the screw rod 5 is provided with a limiting structure.
The bolt head 1 is an external wrenching bolt head, and the wrenching head 4 is of a regular polygonal type.
The power-assisted structure is a power-assisted hole 41, and the power-assisted hole 41 is processed on the wrenching head 4 on the bolt head 1. Because this application has increased the spacer pin on the screw rod and has increased the frictional force between the external screw thread on the bolt and its complex internal thread, so screw up the degree of difficulty increase, through increasing the helping hand hole on the bolt head, through the greatly reduced assembly degree of difficulty behind the downthehole formation lever of inserting branch etc. of helping hand.
The power assisting hole 41 is formed in the side face of the wrenching head 4 and in the center between two adjacent corners of the wrenching head 4.
The limiting structure prevents the nut from loosening and limits the nut by increasing the friction force between the bolt and the nut.
The limiting structure is a limiting pin 2 fixed on a screw 5. The spacing pin 2 reduces the clearance between internal thread and the external screw thread through the extrusion deformation of internal thread in bolt assembling process, makes the frictional force increase between the internal thread and the external screw thread prevent the bolt pine and takes off, if bolt and nut make the spacing pin expose after the assembly, the path can make its deformation increase frictional force through the spacing pin in the nut pine takes off the in-process and blocks droing of nut.
The limiting pin 2 is arranged in a blind hole 3 which is vertically processed on the side surface of the screw 5. When the bolt is processed, the limit pin and the bolt are processed separately, the limit pin is assembled in the blind hole 3 after the processing is finished, and the blind hole is closed to prevent the limit pin from falling off.
The height of the tail end of the limiting pin 2 is larger than that of the screw thread on the screw rod 5.
The limiting pin 2 is made of nylon.
The end of the screw 5 is also provided with a positioning head 51.
Claims (10)
1. The utility model provides an anti-loosening bolt, includes bolt head (1) and screw rod (5), its characterized in that: the bolt head (1) is provided with an assisting structure for assisting in wrenching, and the screw rod (5) is provided with a limiting structure.
2. The anti-loosening bolt as defined in claim 1, wherein: the bolt head (1) is an external wrenching bolt head, and the wrenching head (4) is of a regular polygonal type.
3. The anti-loosening bolt as defined in claim 1, wherein: the power-assisted structure is a power-assisted hole (41), and the power-assisted hole (41) is processed on the wrenching head (4) on the bolt head (1).
4. The anti-loosening bolt as defined in claim 3, wherein: the power-assisted hole (41) is processed on the side face of the wrenching head (4) and in the center between two adjacent corners of the wrenching head (4).
5. The anti-loosening bolt as defined in claim 1, wherein: the limiting structure prevents the nut from loosening and limits the nut by increasing the friction force between the bolt and the nut.
6. The anti-loosening bolt as defined in claim 5, wherein: the limiting structure is a limiting pin (2) fixed on the screw rod (5).
7. The anti-loosening bolt as defined in claim 6, wherein: the limiting pin (2) is arranged in a blind hole (3) which is vertically processed on the side surface of the screw rod (5).
8. The anti-loosening bolt as defined in claim 7, wherein: the height of the tail end of the limiting pin (2) is greater than that of the threads on the screw rod (5).
9. The anti-loosening bolt as defined in claim 8 wherein: the limiting pin (2) is made of nylon.
10. The anti-loosening bolt as defined in claim 1, wherein: and the tail end of the screw rod (5) is also provided with a positioning head (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921534211.8U CN210830056U (en) | 2019-09-16 | 2019-09-16 | Anti-loosening bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921534211.8U CN210830056U (en) | 2019-09-16 | 2019-09-16 | Anti-loosening bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210830056U true CN210830056U (en) | 2020-06-23 |
Family
ID=71263735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921534211.8U Active CN210830056U (en) | 2019-09-16 | 2019-09-16 | Anti-loosening bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210830056U (en) |
-
2019
- 2019-09-16 CN CN201921534211.8U patent/CN210830056U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |