Novel self-tapping screw
By setting a threaded hole and a stop block structure in the hexagonal groove inside the self-tapping screw nut, combined with the inclined push design of the connector, the problem of easy loosening of self-tapping screws is solved, and a higher fastening effect and safety are achieved.
Patent Information
- Application Number
- CN202423298293.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing self-tapping screws have a single function and are prone to loosening. After long-term use, they lose their fastening effect and pose a safety hazard.
A novel self-tapping screw is designed, with a first threaded hole set in the hexagonal groove inside the nut, and a stop block and a V-shaped spring piece in the slide groove. The connector is connected by the first stud and the inclined structure of the stop block to achieve threaded connection and enhance firmness.
This improves the practicality and stability of self-tapping screws after installation, ensuring they do not loosen during long-term use and enhancing safety.
Smart Images
Figure CN223549595U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fastener technology, and in particular to a novel self-tapping screw. Background Technology
[0002] Self-tapping screws generally refer to pointed, coarse-threaded, and relatively hard screws, typically used for non-metallic or softer metals. They do not require drilling or tapping; instead, their own threads create a tight fit between the materials being fastened. However, current self-tapping screws have limited functionality, and after prolonged use, they are prone to loosening, losing their fastening function and posing certain safety risks. Utility Model Content
[0003] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, the present invention proposes a new type of self-tapping screw.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] A novel self-tapping screw includes a screw rod and a nut. The nut has an internal hexagonal groove at its end. The bottom wall of the internal hexagonal groove has a first threaded hole. Sliding grooves are provided on both the left and right sides of the bottom end of the first threaded hole. The sliding grooves are provided through the outside of the screw rod. Stop blocks slide left and right in both sliding grooves. A V-shaped spring is connected between the two stop blocks.
[0006] In some embodiments, the upper corner of the inner end of the stop block is provided with a beveled structure.
[0007] In some embodiments, a rubber pad is provided at the outer end of the stop block.
[0008] In some embodiments, a connector detachably mounted to the self-tapping screw is also included. The connector includes a first stud, a connecting stud, an external hexagonal piece, and a second stud arranged sequentially from bottom to top. The lower end of the first stud is provided with a guide bevel. The first stud can be threadedly connected to the first threaded hole. When the first stud is screwed into the first threaded hole, the guide bevel at the bottom end of the first stud can abut against the inclined surface structure of the two stop blocks, thereby causing the stop blocks to move outward along the slide groove.
[0009] In some embodiments, a second threaded hole is provided at the upper end of the second stud.
[0010] In some embodiments, the diameter of the second stud is greater than the diagonal of the external hexagonal fitting.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: by providing a first threaded hole in the internal hexagonal groove of the nut, the self-tapping screw can be threadedly connected to external parts, improving the practicality of the self-tapping screw and meeting people's usage needs; in addition, sliding grooves are provided on both the left and right sides of the bottom end of the first threaded hole, and the sliding grooves are provided through the outer side of the screw. Stop blocks slide left and right in both sliding grooves, and a V-shaped spring is connected between the two stop blocks. That is to say, when a part is screwed into the first threaded hole for threaded engagement, the bottom end of the part can push the stop block, causing the stop block to move outward and abut against the inner wall of the threaded hole, further improving the firmness of the self-tapping screw after installation. Attached Figure Description
[0012] Figure 1 This is a three-dimensional schematic diagram of the self-tapping screw and connector after installation.
[0013] Figure 2 This is a cross-sectional view of the self-tapping screw and connector after installation.
[0014] Figure 3 This utility model Figure 2 Enlarged view of point A;
[0015] Figure 4 This is an exploded view of the self-tapping screw and connector of this utility model;
[0016] Figure 5 This is a schematic diagram of the structure of the stop block and V-shaped spring sheet of this utility model. Detailed Implementation
[0017] The following detailed description provides various embodiments or examples for implementing this utility model. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of this utility model and do not represent a specific relationship between the different embodiments and / or structures discussed.
[0018] like Figures 1-5 The present invention discloses a novel self-tapping screw, comprising a screw rod 1 and a nut 2. A hexagonal recess 3 is provided at the end of the nut 2. A first threaded hole 4 is provided on the bottom wall of the hexagonal recess 3. Sliding grooves 5 are provided on both the left and right sides of the bottom end of the first threaded hole 4. The sliding grooves 5 are provided through the outside of the screw rod 1. Stop blocks 6 slide left and right in both sliding grooves 5. A V-shaped spring piece 7 is connected between the two stop blocks 6.
[0019] According to the above structure, by providing a first threaded hole 4 in the internal hexagonal groove 3 of the nut 2, the self-tapping screw can be threadedly connected to external parts, improving the practicality of the self-tapping screw and meeting people's usage needs. In addition, sliding grooves 5 are provided on both the left and right sides of the bottom end of the first threaded hole 4. The sliding grooves 5 are provided through the outside of the screw 1. Stop blocks 6 slide left and right in both sliding grooves 5. That is to say, when a part is screwed into the first threaded hole 4 for threaded engagement, the bottom end of the part can push the stop block 6, causing the stop block 6 to move outward and abut against the inner wall of the threaded hole, further improving the firmness of the self-tapping screw after installation.
[0020] Furthermore, a V-shaped spring 7 is connected between the two stop blocks 6. The V-shaped spring 7 is used to connect the stop blocks 6, and when no part is installed in the low thread hole 4, the outer end of the stop block 6 will not protrude out of the slide groove 5, ensuring the normal use of the screw 1.
[0021] Furthermore, a rubber pad is provided at the outer end of the stop block 6.
[0022] See Figure 3 , Figure 5 As shown, the upper side corner of the inner end of the stop block 6 is provided with a beveled structure 21.
[0023] In another embodiment, a connector 41 detachably mounted to the self-tapping screw is also included. The connector 41 includes a first stud 42, a connecting stud 43, an external hexagonal piece 44, and a second stud 45 arranged sequentially from bottom to top. A second threaded hole 51 is provided at the upper end of the second stud 45, and a guide angle 46 is provided at the lower end of the first stud 42. The first stud 42 can be threadedly connected to the first threaded hole 4, and when the first stud 42 is screwed into the first threaded hole 4, the guide angle 46 at the bottom end of the first stud 42 can push against the inclined surface structure 21 of the two stop blocks 6, thereby causing the stop blocks 6 to move outward along the slide groove 5.
[0024] When the connector 41 is installed with the self-tapping screw, it can be screwed into the first threaded hole 4 through the first stud 42. In order to facilitate the rotation of the first stud 42, it can be rotated by a wrench and the external hexagonal fitting 44. When the guide angle 46 at the lower end of the first stud 42 abuts against the inclined structure 21 of the two stop blocks 6, the stop blocks 6 move outward along the slide groove 5, so that the stop blocks 6 abut against the inner wall of the threaded hole, realizing the installation connection between the connector 41 and the self-tapping screw. After that, external parts or equipment can be connected to the second stud 42 or the second threaded hole 51.
[0025] Furthermore, the diameter of the second stud 45 is larger than the diagonal of the external hexagonal fitting 44.
[0026] Based on the accompanying drawings and the foregoing display and description of the basic principles, main features, and advantages of this utility model, those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A novel self-tapping screw, comprising a screw (1) and a nut (2), characterized in that: An internal hexagonal groove (3) is provided at the end of the nut (2), and a first threaded hole (4) is provided on the bottom wall of the internal hexagonal groove (3). Sliding grooves (5) are provided on both the left and right sides of the bottom end of the first threaded hole (4). The sliding grooves (5) are provided through the outside of the screw (1). Stop blocks (6) slide left and right in both sliding grooves (5). A V-shaped spring piece (7) is connected between the two stop blocks (6).
2. The novel self-tapping screw according to claim 1, characterized in that: The upper side corner of the inner end of the stop block (6) is provided with a beveled structure (21).
3. The novel self-tapping screw according to claim 1, characterized in that: A rubber pad is provided at the outer end of the stop block (6).
4. A novel self-tapping screw according to claim 2, characterized in that: It also includes a connector (41) that can be detachably installed with a self-tapping screw. The connector (41) includes a first stud (42), a connecting stud (43), an external hexagonal piece (44), and a second stud (45) arranged sequentially from bottom to top. The lower end of the first stud (42) is provided with a guide angle (46). The first stud (42) can be threadedly connected to the first threaded hole (4). When the first stud (42) is screwed into the first threaded hole (4), the guide angle (46) at the bottom end of the first stud (42) can push against the inclined surface structure (21) of the two stop blocks (6), thereby causing the stop blocks (6) to move outward along the slide groove (5).
5. A novel self-tapping screw according to claim 4, characterized in that: A second threaded hole (51) is provided at the upper end of the second stud (45).
6. A novel self-tapping screw according to claim 4, characterized in that: The diameter of the second stud (45) is larger than the diagonal of the external hexagonal piece (44).