CN215861222U - Non-standard strip sheet screw - Google Patents
Non-standard strip sheet screw Download PDFInfo
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- CN215861222U CN215861222U CN202122056479.9U CN202122056479U CN215861222U CN 215861222 U CN215861222 U CN 215861222U CN 202122056479 U CN202122056479 U CN 202122056479U CN 215861222 U CN215861222 U CN 215861222U
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Abstract
The utility model relates to a non-standard strip sheet screw, wherein a screw is positioned below a screw cap, a gasket is arranged below the screw cap, and the screw cap is positioned at the non-central position of the gasket; the bottom surface of the gasket is provided with an arc-shaped notch, and the screw rod comprises a first thread and a second thread; the first threads are positioned at the upper end of the screw rod and close to the nut, and a plurality of backstop threads are arranged below the gasket; the first threads and the second threads are arranged at intervals, and third threads are arranged between the adjacent threads at the position below the second threads; the height of the third thread ridge is lower than that of the second thread ridge; the notches are at least one group; a spike part is arranged at the lower end of the second thread below the screw rod; the spine portion has a plurality of chamfered surfaces. The improved structure is ingenious in improvement, the first thread, the second thread and the third thread are designed on the screw, the combination of the third screw and the second thread is designed at the lower end of the screw, so that the rotation and the engagement are facilitated, and meanwhile, the notch structure is designed, so that the friction surface can be increased.
Description
Technical Field
The utility model relates to the technical field of non-standard part processing, in particular to a non-standard strip sheet screw.
Background
The existing screw usually comprises a nut and a screw rod, a thread is generally arranged below the screw rod, for example, a long rod screw, a gap exists between the thread and the nut, and no gap exists if the screw is a short rod screw.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems of the prior art, the present invention provides a non-standard band sheet screw which can improve the above disadvantages.
The utility model relates to a non-standard band sheet screw, wherein a screw is positioned below a screw cap, and the top surface of the screw cap is provided with a cross groove or a straight groove; a gasket is arranged below the screw cap and is of an integrated structure, and the gasket is circular or oval; the nut is located off-center with respect to the washer, which is typically designed to be centered and located away from the center; the bottom surface of the gasket is provided with an arc-shaped notch, and a thickened part is arranged at the edge of the bottom surface of the gasket and is increased by 10-15% compared with the thickness of the gasket; the screw rod comprises a first thread and a second thread; the first thread is positioned at the upper end of the screw rod and close to the nut, and an inverted conical surface is arranged below the nut; a plurality of backstop grains are arranged below the gasket; the run of the backstop grain adopts an arc structure, and the backstop grain is provided with a sawtooth structure; the rotation direction of the backstop thread is opposite to that of the first thread; the first threads and the second threads are arranged at intervals, and the distance between the first threads and the second threads accounts for one fourth to one fifth of the whole screw; a third thread is arranged between the adjacent threads at the position below the second thread; the height of the third thread ridge is lower than that of the second thread ridge; the second thread is provided with a notch; the notch extends in the length direction of the screw rod, and the depth from bottom to top is gradually reduced; the notches are at least one group; a spike part is arranged at the lower end of the second thread below the screw rod; the spine portion has a plurality of chamfered surfaces.
Furthermore, the number of the backstop lines is six.
Further, the distance between adjacent teeth of the second threads is 6 mm.
Further, the distance between the adjacent teeth of the second thread and the third thread is 3 mm.
Furthermore, the number of turns of the first threads is 2-3.
Further, the first thread, the second thread or the third thread has an oblique angle of 10-12 degrees with the horizontal line.
Furthermore, the surfaces of the screw cap and the screw rod are provided with a zinc-nickel alloy coating with the thickness of 8 mu m.
Furthermore, a plurality of anti-slip point grains are arranged below the gasket, and the convex height of the anti-slip point grains is about 0.5 mm.
The utility model has the advantages that the improvement is ingenious, the gasket is designed below the nut, the gasket and the nut are of an integral structure, the plugging is increased, the difficulty of backing up the screw is increased due to the adoption of an eccentric design, the first thread, the second thread and the third thread are designed on the screw rod, the combination of the third screw rod and the second thread is designed at the lower end of the screw rod to be beneficial to turning and meshing, meanwhile, the first thread can be locked at the position close to the nut, the locking screw has great advantage improvement compared with the background technology, and the designed backstop threads can play a role in preventing looseness.
Drawings
Fig. 1 is a schematic view of a screw structure in the prior art.
FIG. 2 is a schematic view of the structure of the present invention.
FIG. 3 is a schematic view of the bottom structure of the nut.
The figure is as follows: the screw comprises a nut 1, a gasket 2, an arc-shaped notch 21, a straight groove 3, a screw 4, a second thread 5, a notch 6, a spine 7, a third thread 8, a backstop thread 9, a sawtooth structure 10, a thickened part 11, an anti-skid point thread 12 and a first thread 13.
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. 2 and 3, the utility model relates to a non-standard band sheet screw, which comprises a screw cap 1 and a screw rod 4, wherein the screw rod is positioned below the screw cap, and the top surface of the screw cap is provided with a straight groove 3; a gasket 2 is arranged below the screw cap, and the gasket is circular or oval; the nut is positioned at the non-central position of the gasket; the bottom surface of the gasket is provided with an arc-shaped notch 21, and a thickened part 11 is arranged at the edge of the bottom surface of the gasket and is increased by 10-15% compared with the thickness of the gasket; the screw rod comprises a first thread 2 and a second thread 5; the first thread is positioned at the upper end of the screw rod and close to the nut, and an inverted conical surface is arranged below the nut; a plurality of backstop grains 9 are arranged below the gasket; the run of the backstop grain adopts an arc structure, and the backstop grain is provided with a sawtooth structure 10; the rotation direction of the backstop thread is opposite to that of the first thread; the first threads 13 and the second threads are arranged at intervals, and the distance between the first threads and the second threads accounts for one fourth to one fifth of the whole screw; a third thread 8 is arranged between the adjacent threads at the position below the second thread; the height of the third thread ridge is lower than that of the second thread ridge; the second thread is provided with a notch 6; the notch extends in the length direction of the screw rod, and the depth from bottom to top is gradually reduced; meanwhile, a gap structure is designed, so that the friction surface can be increased, particularly when the wood structure is entered, the common situation is easy to extrude, wood textures can be clamped into the gaps, and the gaps are at least one group; a spike part 7 is arranged at the lower end of the second thread below the screw rod; the spine part is provided with a plurality of inclined cutting surfaces; the multiple tangent planes are beneficial to hole turning, a tip 71 is arranged below the spine part, and the length of the tip is more than 5 mm.
As a technical improvement, the number of the backstop grains is six.
As a technical improvement, the distance between adjacent teeth of the second thread is 6 mm.
As a technical improvement, the distance between the adjacent teeth of the second thread and the third thread is 3 mm.
As a technical improvement, the number of turns of the first thread is 2-3.
As a technical improvement, the oblique angle between the first thread, the second thread or the third thread and the horizontal line is 10-12 degrees, the corrosion resistance is high, and the antirust capacity is improved.
As a technical improvement, the surfaces of the screw cap and the screw rod are provided with a zinc-nickel alloy coating with the thickness of 8 mu m.
Furthermore, a plurality of anti-skid point grains 12 are arranged below the gasket, the convex height of the anti-skid point grains is about 0.5mm, and the anti-skid point grains are also provided with a spraying rubber layer.
Claims (8)
1. The utility model provides a non-standard area piece screw, includes nut and screw rod, its characterized in that: the screw is positioned below the screw cap, and the top surface of the screw cap is provided with a cross groove or a straight groove; a gasket is arranged below the screw cap and is circular or oval; the nut is positioned at the non-central position of the gasket; the bottom surface of the gasket is provided with an arc-shaped notch, and a thickened part is arranged at the edge of the bottom surface of the gasket; the screw rod comprises a first thread and a second thread; the first thread is positioned at the upper end of the screw rod and close to the nut, and an inverted conical surface is arranged below the nut; a plurality of backstop grains are arranged below the gasket; the run of the backstop grain adopts an arc structure, and the backstop grain is provided with a sawtooth structure; the rotation direction of the backstop thread is opposite to that of the first thread; the first threads and the second threads are arranged at intervals, and the distance between the first threads and the second threads accounts for one fourth to one fifth of the whole screw; a third thread is arranged between the adjacent threads at the position below the second thread; the height of the third thread ridge is lower than that of the second thread ridge; the second thread is provided with a notch; the notch extends in the length direction of the screw rod, and the depth from bottom to top is gradually reduced; the notches are at least one group; a spike part is arranged at the lower end of the second thread below the screw rod; the spine portion has a plurality of chamfered surfaces.
2. A non-standard tape tab screw as defined in claim 1, wherein: the number of the backstop lines is six.
3. A non-standard tape tab screw as defined in claim 1, wherein: and the distance between adjacent teeth of the second thread is 6 mm.
4. A non-standard tape tab screw as defined in claim 2, wherein: and the distance between the adjacent teeth of the second thread and the third thread is 3 mm.
5. A non-standard tape tab screw as defined in claim 1, wherein: the number of turns of the first threads is 2-3 turns.
6. A non-standard tape tab screw as defined in claim 1, wherein: the first thread or the second thread or the third thread has an oblique angle of 10-12 degrees with the horizontal.
7. A non-standard tape tab screw as defined in claim 1, wherein: and zinc-nickel alloy coating layers are arranged on the surfaces of the screw cap and the screw rod, and the thickness of the zinc-nickel alloy coating layers is 8 mu m.
8. A non-standard tape tab screw as defined in claim 1, wherein: and a plurality of anti-skid point grains are arranged below the gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122056479.9U CN215861222U (en) | 2021-08-30 | 2021-08-30 | Non-standard strip sheet screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122056479.9U CN215861222U (en) | 2021-08-30 | 2021-08-30 | Non-standard strip sheet screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215861222U true CN215861222U (en) | 2022-02-18 |
Family
ID=80243652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122056479.9U Active CN215861222U (en) | 2021-08-30 | 2021-08-30 | Non-standard strip sheet screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215861222U (en) |
-
2021
- 2021-08-30 CN CN202122056479.9U patent/CN215861222U/en active Active
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| GR01 | Patent grant |