Stainless steel fine-thread small-knife-edge screw

Abstract

The utility model discloses a stainless steel fine-thread small-knife-edge screw which comprises a screw body, a joint is integrally formed at the end of the screw body, the screw body and the joint are both made of stainless steel materials, and a fine-thread screw is arranged on the outer wall of the screw body and extends to the surface of the joint. The connecting outer wall is provided with an axial cutting part and an oblique cutting part, the axial cutting part is arranged in the axis direction of the screw body, a certain angle is formed between the oblique cutting part and the axis of the screw, and the axial cutting part and the oblique cutting part both penetrate through the fine thread. Through the design of the axial cutting groove and the inclined cutting groove, the axial cutting groove ensures that the screw stably advances along a preset path in the screwing-in process, deflection is avoided, the inclined cutting groove effectively cuts materials through the edge sharpening design, material cracking or deformation caused by extrusion is reduced, and the service life of the screw is prolonged. The problem that a traditional screw is prone to causing material damage in the soft material assembling process is effectively solved, and the assembling quality and efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to screw technical field especially relates to a stainless steel fine tooth small knife edge screw. BACKGROUND

[0002] In modern industry, as a common fastener, screws are widely used in electronic devices, medical devices, precision instruments and other fields. With the progress of technology, the performance requirements of screws are becoming higher and higher.

[0003] The end of the traditional screw is usually designed in a conical or flat head shape, but there are some defects in actual use, for example, the tip of the conical end is blunt, lacking effective cutting ability, mainly relying on extrusion of materials to form a thread path, which is easy to cause cracking or deformation of soft materials (such as plastic or wood); the flat end has almost no guiding and cutting ability, and it needs to be pre-drilled before being screwed in, otherwise it is difficult to enter the material smoothly, and the material may be damaged due to excessive resistance during the screwing process. In addition, the end of the traditional screw usually does not have a cutting groove or only has a simple guide groove, which causes stress concentration in the material when the screw is screwed into soft material, and cracks or plastic deformation are easy to occur, and the screwing resistance is large, increasing the operation difficulty and the risk of tool damage. Therefore, a stainless steel fine tooth small knife edge screw is needed to solve the above problems. SUMMARY

[0004] The utility model discloses a stainless steel fine tooth small knife edge screw which solves the defects in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A stainless steel fine tooth small knife edge screw, comprising a screw body, the screw body is integrally formed with a connector at the end, the screw body and the connector are made of stainless steel material, the outer wall of the screw body is provided with a fine tooth screw, which extends to the surface of the connector, the outer wall of the connector is provided with axial cutting and inclined cutting, the axial cutting is arranged along the axis direction of the screw body, the inclined cutting is arranged at a certain angle with the screw axis, and the axial cutting and the inclined cutting both penetrate the fine tooth screw.

[0007] Preferably, the axial cutting is single group, the inclined cutting is multiple groups, and the inclination angle is 10-45 degrees.

[0008] Preferably, the edge of the inclined cutting is sharpened, and the pitch range of the fine tooth screw is 0.5-1.5mm.

[0009] Preferably, the end of the screw body is provided with a groove, and the groove is composed of two mutually perpendicular straight grooves.

[0010] Preferably, the groove width is 0.5-2mm, and the groove depth is 1-3mm.

[0011] Preferably, the groove bottom is smoothly transitioned, and the axial cutting groove and the oblique cutting groove have a depth of 0.5-1.5mm.

[0012] The utility model has the following beneficial effects:

[0013] 1. The axial cutting groove ensures the screw to stably advance along the preset path during screwing, avoiding deflection, and the oblique cutting groove effectively cuts the material through the sharpened edge design, reduces the material cracking or deformation caused by extrusion, effectively solves the material damage problem caused by the traditional screw in the soft material assembly, and improves the assembly quality and efficiency.

[0014] 2. The fine thread extends to the surface of the connecting part, ensuring the continuity of the thread path and the assembly precision, providing higher fastening force and positioning accuracy, and the groove adopts a cross-shaped design, the groove bottom is smoothly transitioned, stress concentration is reduced, the durability of the groove is improved, and the service life of the screw is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A structure diagram of a stainless steel fine tooth small knife edge screw is provided for the utility model;

[0016] Figure 2 For Figure 1 The structure diagram of the connecting part.

[0017] Figure 3 For Figure 1 The structure diagram of the connecting part.

[0018] In the drawing: 1, screw body; 2, groove; 3, fine thread; 4, connecting part; 5, axial cutting groove; 6, oblique cutting groove. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0020] Referring to Figures 1-3The utility model provides a kind of stainless steel fine tooth small knife mouth screw, including screw body 1, the integral forming of interface 4 is formed in screw body 1 end, screw body 1 and interface 4 are made of stainless steel material, screw body 1 outer wall is equipped with fine thread 3, and extend to the surface of interface 4, interface 4 outer wall is equipped with axial cutting groove 5 and oblique cutting groove 6, axial cutting groove 5 is arranged along screw body 1 axis direction, oblique cutting groove 6 is arranged with a certain angle with screw axis, axial cutting groove 5 and oblique cutting groove 6 are all through fine thread 3;

[0021] Specifically, the integral forming of interface 4 and the cutting groove design of through fine thread 3 improve the cutting performance and directivity of the screw, avoiding the problem that traditional screws are easy to cause material cracking, deformation or excessive resistance when screwed into soft material. The fine thread 3 ensures the continuity of the thread path, improves the assembly accuracy and tightening force.

[0022] The axial cutting groove 5 is single-group arranged, and the oblique cutting groove 6 is multi-group arranged with an inclination angle of 10-45 degrees.

[0023] Specifically, the single-group axial cutting groove 5 provides stable directivity to prevent the screw from deviating during screwing in; the multi-group oblique cutting groove 6 can significantly improve the cutting efficiency and reduce the screwing-in resistance.

[0024] The edge of the oblique cutting groove 6 is sharpened, and the pitch range of the fine thread 3 is 0.5-1.5 mm.

[0025] Specifically, the edge sharpening of the oblique cutting groove 6 can enhance its cutting performance, ensuring that the screw body 1 can easily cut into the material and reducing the operation difficulty.

[0026] A groove 2 is formed at the end of the screw body 1, and the groove 2 is composed of two perpendicular straight grooves.

[0027] Specifically, the cross-shaped groove 2 design facilitates cooperation with standard cross screwdrivers or tools, improving the convenience and efficiency of operation.

[0028] The groove width of the groove 2 is 0.5-2 mm, the groove depth is 1-3 mm, the groove bottom is smoothly transitioned, and the depth of the axial cutting groove 5 and the oblique cutting groove 6 is 0.5-1.5 mm.

[0029] Specifically, the groove bottom of the groove 2 adopts a smooth transition design, reducing stress concentration, improving the durability of the groove, and prolonging the service life of the screw.

[0030] The utility model discloses a screw body 1 is through the axial cutting groove 5 and the oblique cutting groove 6 of its end part's synergies, has improved the cutting performance and the directivity of screw significantly, specifically: in the screw screwing process, axial cutting groove 5 can guide screw along the preset path advance, prevents screw deflection or card stagnation, and the edge of oblique cutting groove 6 is after sharpening treatment, can easily cut into material in the screwing process, reduces the operation difficulty and the screwing resistance, especially suitable for the assembly of soft material such as plastic or wood.

[0031] The operator cooperates with the recess 2 through the cross screwdriver, rotates the screw body 1, utilizes the synergies of axial cutting groove 5 and oblique cutting groove 6, easily screws the screw into material, the groove bottom of recess 2 adopts the smooth transition design, reduces stress concentration, improves the durability of recess, prolongs the service life of screw.

[0032] In the screw screwing process, fine thread 3 provides higher fastening force and positioning accuracy, and the setting of the link portion 4 is linked to, ensures the continuity of thread path and assembly accuracy.

[0033] In conclusion, the device effectively solves the problem that the traditional screw is easy to cause material cracking, deformation or too large screwing resistance when screwing into soft material through the design of fine thread 3 extension, cross-shaped rotating recess 2 and axial cutting groove 5 and oblique cutting groove 6.

[0034] The above, only for the preferable specific implementation mode of the utility model, but the protection scope of the utility model does not limit to this, any skilled person in the art in the technical range disclosed by the utility model, according to the technical scheme and the utility model concept of the utility model, carries out equivalent replacement or change, should cover in the protection scope of the utility model.

Claims

1. A stainless steel fine thread flat head screw comprising a screw body (1), characterized in that, The screw body (1) end integral forming has the connection part (4), the screw body (1) and connection part (4) are all made of stainless steel material, the screw body (1) outer wall is equipped with fine thread (3), and extends to the surface of connection part (4), the outer wall of connection part (4) is equipped with axial cutting groove (5) and inclined cutting groove (6), the axial cutting groove (5) is along the axis direction of screw body (1) setting, the inclined cutting groove (6) is set with a certain angle with screw axis, the axial cutting groove (5) and inclined cutting groove (6) all penetrate fine thread (3).

2. A stainless steel fine thread flat head screw as defined in claim 1, wherein The axial cutting groove (5) is single group setting, the inclined cutting groove (6) is multiple group setting, and the inclination angle is 10-45 degrees.

3. A stainless steel fine thread flat head screw as defined in claim 2, wherein The edge of the inclined cutting groove (6) is sharpened, and the pitch range of the fine thread (3) is 0.5-1.5mm.

4. A stainless steel fine thread flat head screw as defined in claim 3, wherein The end of the screw body (1) is provided with a groove (2), and the groove (2) is composed of two mutually perpendicular straight grooves.

5. A stainless steel fine thread flat head screw as defined in claim 4, wherein The groove (2) groove width is 0.5-2mm, and the groove (2) depth is 1-3mm.

6. A stainless steel fine thread flat head screw as defined in claim 5, wherein The groove (2) groove bottom smooth transition, the depth of the axial cutting groove (5) and the inclined cutting groove (6) is 0.5-1.5mm.

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