CN217301187U - Screw with umbrella-shaped threads - Google Patents
Screw with umbrella-shaped threads Download PDFInfo
- Publication number
- CN217301187U CN217301187U CN202220184600.8U CN202220184600U CN217301187U CN 217301187 U CN217301187 U CN 217301187U CN 202220184600 U CN202220184600 U CN 202220184600U CN 217301187 U CN217301187 U CN 217301187U
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- China
- Prior art keywords
- umbrella
- screw
- shaped ring
- screw rod
- guide post
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Abstract
The utility model relates to a screw with umbrella-type screw thread, its characterized in that: establish first screw thread portion and second screw thread portion in screw rod one end including screw rod and fixed cover, the beneficial effects of the utility model: by arranging the small umbrella-shaped ring, the nominal diameter of the small umbrella-shaped ring is smaller than that of the umbrella-shaped ring, when the plastic hole is too small, the small umbrella-shaped ring enters firstly, the hole is turned firstly, and then the umbrella-shaped ring enters, so that the plastic is prevented from being broken.
Description
Technical Field
The utility model belongs to the technical field of the fastener, especially, relate to a screw with umbrella-type screw thread.
Background
The thread part of the existing screw is a flat ring, and after the screw is installed, the screw is easy to loosen or withdraw in a long-time vibration process.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a following technical scheme: a screw having a tapered thread, characterized by: establish first screw thread portion and second screw thread portion in screw rod one end including screw rod and fixed cover, first screw thread portion and second screw thread portion fixed connection, first screw thread portion includes that two at least fixed covers establish the umbrella-shaped ring on the screw rod, fixed connection between the upper end of umbrella-shaped ring and the lower extreme that is located the umbrella-shaped ring of the top of this umbrella-shaped ring, the upper portion radius of umbrella-shaped ring is greater than the lower part radius of umbrella-shaped ring, second screw thread portion establishes the little umbrella-shaped ring on the screw rod including fixed cover, the upper end of little umbrella-shaped ring and the lower extreme fixed connection of umbrella-shaped ring, the nominal diameter of little umbrella-shaped ring is less than the nominal diameter of umbrella-shaped ring.
The utility model discloses further setting up to: the other end of screw rod is equipped with the installation pole with screw rod fixed connection, the upper end of installation pole is fixed with the guide post, through connecting rod fixed connection between guide post and the installation pole, the connecting rod is close to the installation pole and is the setting of enlargiing gradually.
The utility model discloses further setting up to: the middle part of the screw rod is fixedly sleeved with a hexagonal rotating block, and the hexagonal rotating block is positioned between the umbrella-shaped ring and the mounting rod.
The utility model discloses further setting up to: the radius of the guide post is smaller than that of the screw.
The utility model discloses further setting up to: the thickness of the hexagonal rotating block is 1.9-2.1 mm.
The utility model discloses further setting up to: a transition part with the radius of 0.5mm is arranged between the hexagonal rotating block and the screw rod.
The utility model discloses further setting up to: the length of guide post is 3.6mm, the distance between the lower terminal surface of guide post and the upper surface of hexagonal turning block is 17.5 mm.
The beneficial effects of the utility model reside in that: by arranging the small umbrella-shaped ring, the nominal diameter of the small umbrella-shaped ring is smaller than that of the umbrella-shaped ring, when the plastic hole is too small, the small umbrella-shaped ring enters firstly, the hole is turned firstly, and then the umbrella-shaped ring enters, so that the plastic is prevented from being broken.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
According to fig. 1, the embodiment discloses a screw with umbrella thread, which comprises a screw rod 1, a first thread part 2 and a second thread part 3 fixedly sleeved at one end of the screw rod 1, wherein the first thread part 2 and the second thread part 3 are fixedly connected, the first thread part 2 comprises at least two umbrella-shaped rings 4 fixedly sleeved on the screw rod 1, the upper ends of the umbrella-shaped rings 4 are fixedly connected with the lower ends of the umbrella-shaped rings above the umbrella-shaped rings, the upper radius of each umbrella-shaped ring 4 is larger than the lower radius of the umbrella-shaped ring, by arranging the umbrella-shaped rings, the upper radius of each umbrella-shaped ring is larger than the radius of the lower part of each umbrella-shaped ring, when the screw is withdrawn, the resistance is large, and the backstop effect is achieved, the second thread part comprises a small umbrella-shaped ring 5 fixedly sleeved on the screw rod 1, the upper end of the small umbrella-shaped ring 5 is fixedly connected with the lower ends of the umbrella-shaped rings 4, the nominal diameter of the small umbrella-shaped ring 5 is smaller than that of the umbrella-shaped ring 4, and the small umbrella-shaped ring is arranged, and the nominal diameter of the small umbrella-shaped ring is smaller than that of the umbrella-shaped ring, so that when a plastic hole is too small, the small umbrella-shaped ring enters firstly, the hole is turned firstly, and then the umbrella-shaped ring enters, and the plastic is prevented from being broken.
The utility model discloses further setting up to: the other end of screw rod 1 is equipped with installation pole 6 with screw rod 1 fixed connection, the upper end of installation pole 6 is fixed with guide post 7, through connecting rod 8 fixed connection between guide post 7 and the installation pole 6, connecting rod 8 is close to installation pole 6 and is the setting of enlargiing gradually.
The utility model discloses further setting up to: the fixed cover in middle part of screw rod 1 is equipped with hexagonal turning block 9, hexagonal turning block 9 is located between umbrella shape ring 4 and installation pole 6, through setting up hexagonal turning block, conveniently drives the screw rod and rotates.
The utility model discloses further setting up to: the radius of the guide post 7 is smaller than that of the screw 1.
The utility model discloses further setting up to: the thickness of the hexagonal rotating block 9 is 1.9-2.1 mm.
The utility model discloses further setting up to: a transition part 10 with the radius of 0.5mm is arranged between the hexagonal rotating block 9 and the screw rod 1.
The utility model discloses further setting up to: the length of guide post 7 is 3.6mm, the distance between the lower terminal surface of guide post 7 and the upper surface of hexagonal turning block 9 is 17.5 mm.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and any decoration, modification or equivalent replacement made by those skilled in the art according to the above description is within the protection scope of the present invention.
Claims (7)
1. A screw having a mushroom thread, characterized by: establish first screw thread portion and second screw thread portion in screw rod one end including screw rod and fixed cover, first screw thread portion and second screw thread portion fixed connection, first screw thread portion includes that two at least fixed covers establish the umbrella-shaped ring on the screw rod, fixed connection between the upper end of umbrella-shaped ring and the lower extreme that is located the umbrella-shaped ring of the top of this umbrella-shaped ring, the upper portion radius of umbrella-shaped ring is greater than the lower part radius of umbrella-shaped ring, second screw thread portion establishes the little umbrella-shaped ring on the screw rod including fixed cover, the upper end of little umbrella-shaped ring and the lower extreme fixed connection of umbrella-shaped ring, the nominal diameter of little umbrella-shaped ring is less than the nominal diameter of umbrella-shaped ring.
2. A screw having a umbrella thread as defined in claim 1, wherein: the other end of screw rod is equipped with the installation pole with screw rod fixed connection, the upper end of installation pole is fixed with the guide post, through connecting rod fixed connection between guide post and the installation pole, the connecting rod is close to the installation pole and is the setting of enlargiing gradually.
3. A screw having umbrella threads as defined in claim 1, wherein: the middle part of the screw rod is fixedly sleeved with a hexagonal rotating block, and the hexagonal rotating block is positioned between the umbrella-shaped ring and the mounting rod.
4. A screw having a umbrella thread as defined in claim 2, wherein: the radius of the guide post is smaller than that of the screw.
5. A screw having a umbrella thread as defined in claim 3, wherein: the thickness of the hexagonal rotating block is 1.9-2.1 mm.
6. A screw having umbrella threads as defined in claim 5, wherein: a transition part with the radius of 0.5mm is arranged between the hexagonal rotating block and the screw rod.
7. A screw having umbrella threads as defined in claim 6, wherein: the length of guide post is 3.6mm, the distance between the lower terminal surface of guide post and the upper surface of hexagonal turning block is 17.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220184600.8U CN217301187U (en) | 2022-01-22 | 2022-01-22 | Screw with umbrella-shaped threads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220184600.8U CN217301187U (en) | 2022-01-22 | 2022-01-22 | Screw with umbrella-shaped threads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217301187U true CN217301187U (en) | 2022-08-26 |
Family
ID=82927363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220184600.8U Active CN217301187U (en) | 2022-01-22 | 2022-01-22 | Screw with umbrella-shaped threads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217301187U (en) |
-
2022
- 2022-01-22 CN CN202220184600.8U patent/CN217301187U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |