Fast tapping type self drilling screw
By designing large angles and large pitch threads on the threaded rod of the drilling tail screw, the problem of insufficient cutting force during the self-attack process of traditional drilling tail screws is solved, and a fast-attack drilling tail screw with low resistance and easy attack is achieved, improving the efficiency and effect of spinning.
Patent Information
- Application Number
- CN202422127267.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-08-30
AI Technical Summary
The traditional drilling screw has a small pitch and a tip, which leads to insufficient cutting force during the self-tapping process, which makes the screw tapping difficult and time-consuming, and the overall effect is not good.
A fast-attack drill tail screw is designed, and two threaded teeth with a spacing angle of 180° are provided on the threaded rod. The angle of the screw teeth is A, A>90°, the width of the bottom edge is W, and W is 1/4 to 1/6 of the pitch of the screw teeth.
Through the settings of large teeth angles and large pitches, the resistance of screw screw installation is reduced, making it easier to rotate, and when dealing with non-extraordinary hard materials, the rotation feed is accelerated to achieve the function of rapid rotation.
Smart Images
Figure CN222924753U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fasteners, and more specifically, it relates to a quick-attack self-drilling screw. Background Art
[0002] Traditional self-drilling screws have a small pitch and sharp screw teeth. Although this can improve the cutting force during the self-tapping process, the whole screw needs to be completely inserted, which will slow down, take a long time, and be laborious to insert, resulting in poor overall performance. Accordingly, the utility model proposes a quick-attack self-drilling screw. Summary of the Utility Model
[0003] The purpose of the utility model is to overcome the above deficiencies in the prior art and provide a quick-attack self-drilling screw with the characteristics of low resistance and easy insertion.
[0004] To solve the above technical problems, the purpose of the utility model is realized as follows: A quick-attack self-drilling screw according to the utility model includes a threaded rod with a rotating head at one end and a drill tail at the other end. Two threads with an included angle of 180° are spirally arranged on the threaded rod. The thread angle of the thread is A, and A > 90°. The bottom width of the thread is W, and W is 1 / 4 to 1 / 6 of the pitch of the thread.
[0005] The utility model is further provided as: The thread angle A of the thread is 120°.
[0006] The utility model is further provided as: The bottom width W of the thread is 1 / 5 of the pitch of the thread.
[0007] In summary, the utility model has the following beneficial effects:
[0008] 1. The setting of the large thread angle reduces the grasping force after the screw is screwed, but during the screwing process, the resistance is reduced, and it is easier to complete the screwing.
[0009] 2. The setting of the large pitch has requirements for the feed amount during the screwing process, but when dealing with materials that are not particularly hard, it can accelerate the screwing feed and achieve the function of quickly completing the rotation. Brief Description of the Drawings
[0010] Figure 1 is the overall structural schematic diagram of the utility model;
[0011] Figure 2 is the internal structural schematic diagram of the utility model;
[0012] Figure 3 is Figure 2 the enlarged structural schematic diagram of part B in. Detailed Description of the Embodiment
[0013] To enable those skilled in the art to better understand the technical solution of the present utility model, the following describes the preferred implementation schemes of the present utility model in combination with specific embodiments. However, it should be understood that these descriptions are only for further explaining the features and advantages of the present utility model, rather than limiting the patent requirements of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by the present utility model.
[0014] The present utility model will be further described below in conjunction with the accompanying drawings and preferred embodiments.
[0015] Embodiment 1
[0016] See Figures 1 to 3 As shown, a quick-attack self-drilling screw involved in this embodiment includes a threaded rod 2 with a rotating head 1 at one end and a drill tail (not shown) at the other end. Two threads 3 with an included angle of 180° are spirally arranged on the threaded rod 2. The tooth angle of the thread 3 is A, and A is 120°. The bottom width of the thread 3 is W, and W is 1 / 5 of the pitch of the thread 3.
[0017] In this implementation scheme, by setting the tooth angle of the thread 3 as an obtuse angle and the angle as 120°, this tooth angle has the characteristics of small resistance and easy feeding; by setting the bottom width of the thread 3 as 1 / 5 of the pitch of the thread 3, the pitch is increased, and the screwing and feeding speed is accelerated.
[0018] For the quick-attack self-drilling screw involved in the present utility model, through the setting of the large tooth angle, although the grasping force after the screw is screwed is reduced, during the screwing process, the resistance is reduced, and it is easier to complete the screwing; also through the setting of the large pitch, although there are requirements for the feeding amount during the screwing process, when dealing with materials that are not particularly hard, the screwing and feeding speed can be accelerated to achieve the function of quickly completing the rotation. The overall function is perfect and the practicability is strong.
[0019] Unless otherwise specified, in the present utility model, if there are terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated is based on the actual orientation or positional relationship shown. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present utility model are only used for exemplary illustration and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood in combination with the embodiments and according to the specific circumstances.
[0020] Unless otherwise clearly defined and limited, in this utility model, if there are terms such as "arranged", "connected" and "coupled", they shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0021] The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations according to the concept of the present utility model without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in this technical field based on the concept of the present utility model through logical analysis, reasoning or limited experiments on the basis of the prior art shall fall within the protection scope determined by the claims.
Claims
1. A quick-attack self-drilling screw, comprising a threaded rod having a rotating head at one end and a drilling tail at the other end, characterized in that: The spiral disk on the threaded rod is provided with two screw teeth with an interval of 180 degrees, the screw tooth angle is A, A>90 degrees, the bottom edge width of the screw tooth is W, W is 1 / 4 to 1 / 6 of the screw tooth pitch.
2. The quick-attack self-drilling screw according to claim 1, characterized in that: The thread angle A of the thread is 120°.
3. The quick-attack self-drilling screw according to claim 1 or 2, characterized in that: The bottom width W of the screw thread is 1 / 5 of the screw thread pitch.