CN215567161U - Non-standard bolt - Google Patents
Non-standard bolt Download PDFInfo
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- CN215567161U CN215567161U CN202122039343.7U CN202122039343U CN215567161U CN 215567161 U CN215567161 U CN 215567161U CN 202122039343 U CN202122039343 U CN 202122039343U CN 215567161 U CN215567161 U CN 215567161U
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- nut
- jack
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- screw
- standard bolt
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Abstract
The utility model relates to a non-standard bolt, which comprises a nut and a screw, wherein the screw is positioned below the nut; the height of the screw is greater than or equal to that of the cylinder; the height of the screw cap is less than 12mm, and the outer wall of the screw cap is smooth; a conical surface is arranged between the lower part of the nut and the cylinder; the middle of the top surface of the nut is provided with a special-shaped jack, and the special-shaped jack comprises an upper jack and a lower jack; the jack comprises four vertical surfaces which are mutually vertical, an inner convex arc surface is arranged between the adjacent vertical surfaces, and the angle of the inner convex arc surface is 58-60 degrees; the lower insertion hole is a square hole, and the corner position of the top end of the lower insertion hole is adjacent to the inner convex arc-shaped surface; the height of the lower jack is greater than that of the upper jack. The special-shaped jack is novel in design, the special-shaped jack is designed on the nut, the special-shaped jack cannot be detached by a common standard tool, the height of the nut is low, and the nut is not convenient to clamp and unscrew by a wrench.
Description
Technical Field
The utility model relates to the technical field of non-standard part processing, in particular to a non-standard bolt.
Background
A bolt is a cylindrical threaded fastener that is used with a nut or threads to mate with the body of a machine to secure two or more parts together. The bolt in the prior art comprises a head and a screw rod, wherein the head of the bolt is mostly a hexagon head, a square head or a large flat head cross, and the like.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned problems of the prior art, the present invention provides a non-standard bolt which can improve the above-mentioned disadvantages.
The utility model relates to a non-standard bolt which comprises a nut and a screw rod, wherein the screw rod is made of low-carbon steel, the screw rod is positioned below the nut, a cylinder is arranged between the nut and the screw rod, and the diameter of the cylinder is larger than that of the screw rod; the height of the screw is greater than or equal to that of the cylinder; the height of the screw cap is less than 12mm, and the outer wall of the screw cap is smooth; a conical surface is arranged between the lower part of the nut and the cylinder, the included angle between the conical surface and the cylinder on the section is 112 degrees, and the height of the conical surface is equivalent to that of the nut; the middle of the top surface of the nut is provided with a special-shaped jack, and the special-shaped jack comprises an upper jack and a lower jack; the jack comprises four vertical surfaces which are mutually vertical, an inner convex arc surface is arranged between the adjacent vertical surfaces, and the angle of the inner convex arc surface is 58-60 degrees; the lower insertion hole is a square hole, and the corner position of the top end of the lower insertion hole is adjacent to the inner convex arc-shaped surface; the height of the lower jack is greater than that of the upper jack.
Further, the screw rod is fully distributed with threads, wherein the distance between adjacent teeth is 6 mm.
Further, the oblique angle of the thread to the horizontal line is 10-12 degrees.
Further, the side wall of the cylinder is provided with a hole groove.
Furthermore, a fillet concave surface is arranged at the corner position of the top surface of the nut.
Furthermore, the surfaces of the screw cap, the cylinder and the screw rod are all provided with zinc-nickel alloy coating layers, and the thickness of the zinc-nickel alloy coating layers is 8 mu m.
Furthermore, the side wall of the cylinder is provided with an anti-skid layer, the anti-skid layer is embedded, and the number of the anti-skid layers is 2-4.
Furthermore, the anti-skid layer is made of rubber, and the cross section of the anti-skid layer is oval.
The special-shaped jack is novel in design, the special-shaped jack is designed on the nut, the special-shaped jack cannot be detached by a common standard tool, the height of the nut is low, and the nut is not convenient to clamp and unscrew by a wrench.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Fig. 2 is a top view of the nut.
The figure is as follows: the anti-skid device comprises a nut 1, a cylinder 2, a screw rod 3, a conical surface 4, a round corner concave surface 41, an upper insertion hole 5, a lower insertion hole 6, a vertical surface 51, an inner convex arc surface 52, a top edge 61, a hole groove 7 and an anti-skid layer 8.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
As shown in fig. 1 and 2, the present invention relates to a non-standard bolt, which comprises a nut 1 and a screw 3, wherein the screw 3 is positioned below the nut 1, a cylinder 2 is arranged between the nut 1 and the screw 3, the cylinder 2 is made of low carbon steel and is of a unitary structure, and the diameter of the cylinder 2 is larger than that of the screw 3; the height of the screw rod 3 is greater than or equal to that of the cylinder 2; in consideration of preventing clamping and reducing the height of the nut, wherein the height of the nut 1 is 5mm, the outer wall of the nut is smooth, molybdenum disulfide is sprayed specifically, and the side wall of the nut cannot be clamped by a wrench even if the nut is smooth; a conical surface 4 is arranged between the lower part of the nut 1 and the cylinder 2, the included angle between the conical surface 4 and the cylinder 2 on the section is 112 degrees, and the height of the conical surface 4 is equivalent to that of the nut 1; the middle of the top surface of the nut 1 is provided with a special-shaped jack which comprises an upper jack 5 and a lower jack 6; the maximum width of the upper jack accounts for one third of the width of the top surface of the nut; the jack comprises four vertical surfaces 51 which are mutually vertical, an inner convex arc surface 52 is arranged between the adjacent vertical surfaces, and the angle of the inner convex arc surface is 58-60 degrees; the lower insertion hole is a square hole, and the corner position of the top end of the lower insertion hole is adjacent to the inner convex arc-shaped surface, namely the top edge 61 of the lower insertion hole is positioned between the adjacent inner convex arc-shaped surfaces; the height of the lower receptacle is greater than the height of the upper receptacle 5.
As a technical improvement, the screw rod 3 is fully provided with threads, wherein the distance between adjacent teeth is 6 mm.
As a technical improvement, the oblique angle of the thread and the horizontal line is 10-12 degrees.
As a technical improvement, the side wall of the cylinder 2 is provided with a hole groove 7.
As a technical improvement, a fillet concave surface 41 is arranged at the corner position of the top surface of the screw cap 1.
As a technical improvement, the surfaces of the nut 1, the cylinder 2 and the screw 3 are all provided with zinc-nickel alloy coatings, and the thicknesses of the zinc-nickel alloy coatings are 8 mu m.
As a technical improvement, the side wall of the cylinder 2 is provided with an anti-skid layer 8, the anti-skid layers are embedded, and the number of the anti-skid layers is 2-4.
As a technical improvement, the anti-skid layer is made of rubber, and the cross section of the anti-skid layer is oval.
Adopt its stability of this kind of non-standard bolt strong, insert the structure in, wherein the hole groove 7 on the cylinder lateral wall can regard as supplementary stable structure. Some jack structures in this scheme are unique, reach the utility model purpose that standard spanner can't dismantle.
Claims (8)
1. The utility model provides a non-standard bolt, includes nut and screw rod, its characterized in that: the screw is positioned below the nut, a cylinder is arranged between the nut and the screw, and the diameter of the cylinder is larger than that of the screw; the height of the screw is greater than or equal to that of the cylinder; the height of the screw cap is less than 12mm, and the outer wall of the screw cap is smooth; a conical surface is arranged between the lower part of the nut and the cylinder; the middle of the top surface of the nut is provided with a special-shaped jack, and the special-shaped jack comprises an upper jack and a lower jack; the jack comprises four vertical surfaces which are mutually vertical, an inner convex arc surface is arranged between the adjacent vertical surfaces, and the angle of the inner convex arc surface is 58-60 degrees; the lower insertion hole is a square hole, and the corner position of the top end of the lower insertion hole is adjacent to the inner convex arc-shaped surface; the height of the lower jack is greater than that of the upper jack.
2. A non-standard bolt according to claim 1, wherein: the screw rod is fully distributed with threads, wherein the distance between adjacent teeth is 6 mm.
3. A non-standard bolt according to claim 2, wherein: the oblique angle of the thread to the horizontal is 10-12 degrees.
4. A non-standard bolt according to claim 1, wherein: the side wall of the cylinder is provided with a hole groove.
5. A non-standard bolt according to claim 1, wherein: and a fillet concave surface is arranged at the corner position of the top surface of the nut.
6. A non-standard bolt according to claim 1, wherein: the surfaces of the screw cap, the cylinder and the screw rod are all provided with zinc-nickel alloy coating layers, and the thickness of the zinc-nickel alloy coating layers is 8 mu m.
7. A non-standard bolt according to claim 1, wherein: the side wall of the cylinder is provided with an anti-skid layer, and the number of the anti-skid layers is 2-4.
8. A non-standard bolt according to claim 7, wherein: the anti-slip layer is made of rubber, and the cross section of the anti-slip layer is oval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122039343.7U CN215567161U (en) | 2021-08-26 | 2021-08-26 | Non-standard bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122039343.7U CN215567161U (en) | 2021-08-26 | 2021-08-26 | Non-standard bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215567161U true CN215567161U (en) | 2022-01-18 |
Family
ID=79843117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122039343.7U Active CN215567161U (en) | 2021-08-26 | 2021-08-26 | Non-standard bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215567161U (en) |
-
2021
- 2021-08-26 CN CN202122039343.7U patent/CN215567161U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |