CN218063041U - Fastening screw - Google Patents
Fastening screw Download PDFInfo
- Publication number
- CN218063041U CN218063041U CN202221787942.5U CN202221787942U CN218063041U CN 218063041 U CN218063041 U CN 218063041U CN 202221787942 U CN202221787942 U CN 202221787942U CN 218063041 U CN218063041 U CN 218063041U
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- screw
- screw thread
- thread
- fastening
- screws
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Abstract
The utility model relates to the field of screw connection, in particular to a fastening screw, which comprises a screw cap, wherein a first screw rod is arranged on the screw cap, a second screw rod extends out of the first screw rod, and the screw threads on the first screw rod and the second screw rod are opposite in rotation direction; the diameter of the first screw is larger than that of the second screw; the screw thread on the first screw is a positive screw thread, and the screw thread on the second screw is a negative screw thread; the screws on the first and second screws generate opposite locking forces to fasten the screws, so that the fastening effect of the screws can be improved, and the screws are prevented from falling off.
Description
Technical Field
The utility model relates to a screw connection field, more specifically say a fastening screw.
Background
Screws are connecting parts commonly used in the mechanical field, and are tools for fastening machine parts of an object step by utilizing the physics and mathematical principles of the inclined circular rotation and the friction of the object; in the prior art, a plurality of screws are provided, and basically, a section of screw is provided with a screw thread, so that although the connection can be completed quickly, after the screws are used for a period of time, certain looseness caused by vibration and the like is inevitable.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a fastening screw can promote the fastening effect of screw, prevents the screw from droing.
The purpose of the utility model is realized through the following technical scheme:
the fastening screw comprises a screw cap, wherein a first screw rod is arranged on the screw cap, a second screw rod extends out of the first screw rod, the screw threads on the first screw rod and the second screw rod are opposite in rotating direction, and the screw threads on the first screw rod and the second screw rod generate opposite locking force to fasten the connection of the screws;
the diameter of the first screw is larger than that of the second screw;
the screw thread on the first screw is a positive screw thread, and the screw thread on the second screw is a negative screw thread;
the screw thread on the first screw is a trapezoidal screw thread or a triangular screw thread or a rectangular screw thread, and the screw thread on the second screw is a trapezoidal screw thread or a triangular screw thread or a rectangular screw thread;
the screw cap is fixedly connected with a connecting ring;
a plurality of inclined blocks are uniformly arranged on the connecting ring in the circumferential direction;
the inclined block is triangular, and an inclined plane and a vertical plane are arranged on the inclined block;
the inclined direction of the inclined surface is the same as the rotating and locking direction of the first screw;
the outer side of the inclined block is provided with an outer inclined plane;
and the end part of the second screw is provided with a chamfer.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic view of the overall structure of a fastening screw according to the present invention;
fig. 2 is a schematic structural view of a front view of a fastening screw according to the present invention;
fig. 3 is a schematic structural view of a fastening screw according to the present invention.
In the figure: a nut 10; a connection ring 20; the inclined block 30; the inclined surface 31; a vertical face 32; the outer inclined surface 33; a first screw 40; and a second screw 50.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In use, as shown in fig. 1, in order to solve the technical problem of "how to improve the fastening effect of the screw and prevent the screw from falling", the structure and function of a fastening screw will be described in detail below;
the fastening screw comprises a screw cap 10, wherein a first screw 40 is arranged on the screw cap 10, a second screw 50 extends out of the first screw 40, the screw threads on the first screw 40 and the second screw 50 are opposite in rotation direction, and the screw threads on the first screw 40 and the second screw 50 generate opposite locking forces to fasten the connection of the screws;
in use, a screw is threaded through two parts to be connected, first, a first nut is connected to a first screw 40, as shown in fig. 1, the diameter of the first screw 40 is larger than that of a second screw 50, the first screw is threaded through the second screw 50 to be connected to the first screw 40, the end face of the first screw abuts on the part to be connected, the second screw is connected to the second screw 50, and the cross section of the second nut abuts on the first screw;
since the screw thread directions of the first screw 40 and the second screw 50 are opposite, when the first screw is loosened, the moving direction of the first screw is exactly the locking direction of the second screw, and the second screw generates locking force on the first screw, so that the screws are prevented from being loosened;
further, for example, the rotation direction of the first screw 40 and the second screw 50 is illustrated, the screw thread on the first screw 40 is a positive screw thread, the screw thread on the second screw 50 is a negative screw thread, or the screw thread on the first screw 40 is a negative screw thread, and the screw thread on the second screw 50 is a positive screw thread, wherein the positive screw thread is a right rotation, and the negative screw thread is a left rotation;
further, by way of example, the shapes of the screw threads of the first screw 40 and the second screw 50, the screw thread of the first screw 40 includes, but is not limited to, a trapezoidal screw thread, and the screw thread of the second screw 50 includes, but is not limited to, a trapezoidal screw thread, which is more resistant to falling off;
further, a connecting ring 20 is fixedly connected to the screw cap 10, a plurality of inclined blocks 30 are uniformly arranged on the connecting ring 20 in the circumferential direction, the inclined blocks 30 include, but are not limited to, a triangle, an inclined surface 31 and a vertical surface 32 are arranged on each inclined block 30, the inclined direction of the inclined surface 31 is the same as the rotational locking direction of the first screw 40, and an outer inclined surface 33 is arranged on the outer side of each inclined block 30;
as shown in fig. 1, the inclined blocks 30 can further fasten the screw connections, and when the screws are loosened, the vertical surfaces 32 on the plurality of inclined blocks 30 are stopped, so that the screw connections are further promoted;
further, the end of the second screw 50 is provided with a chamfer to facilitate the connection of the second screw.
Claims (10)
1. A fastening screw comprising a nut (10), a first screw (40) being provided on the nut (10), a second screw (50) extending from the first screw (40), characterized in that: the screw threads on the first and second screws (40, 50) are oppositely threaded, and the screw threads on the first and second screws (40, 50) produce an opposite locking force to tighten the coupling of the screws.
2. A fastening screw according to claim 1, wherein: the diameter of the first screw (40) is larger than that of the second screw (50).
3. A fastening screw according to claim 1, wherein: the screw thread on the first screw (40) is a positive screw thread, and the screw thread on the second screw (50) is a negative screw thread.
4. A fastening screw according to claim 1, wherein: the screw thread on the first screw rod (40) is a trapezoidal screw thread, a triangular screw thread or a rectangular screw thread, and the screw thread on the second screw rod (50) is a trapezoidal screw thread, a triangular screw thread or a rectangular screw thread.
5. A fastening screw according to claim 1, wherein: the screw cap (10) is fixedly connected with a connecting ring (20).
6. A fastening screw according to claim 5, wherein: a plurality of inclined blocks (30) are uniformly arranged on the connecting ring (20) in the circumferential direction.
7. A fastening screw according to claim 6, wherein: the inclined block (30) is triangular, and an inclined surface (31) and a vertical surface (32) are arranged on the inclined block (30).
8. A fastening screw according to claim 7, wherein: the inclined surface (31) has the same inclination direction as the first screw (40).
9. A fastening screw according to claim 6, wherein: an outer inclined surface (33) is arranged on the outer side of the inclined block (30).
10. A fastening screw according to claim 1, wherein: the end of the second screw (50) is provided with a chamfer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221787942.5U CN218063041U (en) | 2022-07-12 | 2022-07-12 | Fastening screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221787942.5U CN218063041U (en) | 2022-07-12 | 2022-07-12 | Fastening screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218063041U true CN218063041U (en) | 2022-12-16 |
Family
ID=84400210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221787942.5U Active CN218063041U (en) | 2022-07-12 | 2022-07-12 | Fastening screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218063041U (en) |
-
2022
- 2022-07-12 CN CN202221787942.5U patent/CN218063041U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |