Self-tapping tail binding screw with improved structure
By designing a self-tapping screw with a combined screw body and anti-theft block structure, the problems of easy theft and insufficient connection strength of existing self-tapping screws are solved, achieving a screw design with high security and robustness.
Patent Information
- Application Number
- CN202520206954.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-02-10
AI Technical Summary
Existing self-tapping screws are easily stolen from non-metallic or softer metal materials, and their connection strength is insufficient, resulting in low security.
A screw body composed of upper and lower screw bodies and a lower screw body was designed. Through the cooperation of the locking block and the pressure rod, the screw is prevented from being inserted into the screw separation hole and prevented from being separated. Combined with the design of the anti-theft block, the difficulty of rotation is increased, and the safety and firmness are improved.
It effectively prevents screws from being stolen, improves the screws' firmness and security, increases the difficulty of turning them, and enhances their anti-theft performance.
Smart Images
Figure CN223739832U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to screw technical field especially, it relates to a self -drilling bundle tail screw with improved structure. BACKGROUND
[0002] Self -drilling bundle tail screw is a kind of special screw, its feature lies in its sharp head design, so that it can be directly on the material to be consolidated by its thread " attack - drill, extrude, press " corresponding thread without needing to drill hole in advance, make it mutually tight cooperation.This screw is usually used on nonmetal or softer metal material, from the prior art, common screw structure is simple, and the screw groove on screw is exposed, in front of people with ulterior motives, directly using screwdriver can be stolen, security is not high, and self -drilling screw is connected with object by thread, improves friction, when torsion is greater than friction, then can take out screw, therefore, we propose a self -drilling bundle tail screw with improved structure to solve above problems.
[0003] It needs to be explained that the above content belongs to the technical cognition of the inventor and does not necessarily constitute the prior art. CONTENT OF UTILITY MODEL
[0004] In order to solve the above problems, the utility model aims at providing a self -drilling bundle tail screw with improved structure, has higher firmness, the advantages such as theft prevention.To achieve the above object, the utility model provides a self -drilling bundle tail screw with improved structure, including screw body, screw bundle tail, self -drilling head, the both ends of screw body are screw bundle tail and self -drilling head respectively, and screw body is combined by upper screw body and lower screw body, the end away from self -drilling head of lower screw body is provided with mounting groove, the end away from screw bundle tail of upper screw body is in cylindrical structure, the end away from screw bundle tail of upper screw body is inserted into mounting groove, two groups of recesses are symmetrically provided in the inside of mounting groove, the position corresponding to two groups of recesses of upper screw body is provided with perforation, the central position of screw bundle tail is provided with separation hole, separation hole is communicated with perforation, two groups of recesses are slidably connected with clamping block, clamping block is connected with recess inner wall by spring, clamping block passes through upper screw body and is placed in perforation and separation hole, and pressure rod is inserted in separation hole.
[0005] In one example, the pressure rod is in cylindrical structure, and the diameter of pressure rod is less than the diameter of separation hole, and the clamping block is in spherical structure.
[0006] In one example, the arc-shaped outer side of lower screw body is uniformly provided with rotating groove, and the position close to self -drilling head in rotating groove is provided with horizontal rod.
[0007] In one example, the horizontal rod is provided with anti-theft block, the anti-theft block is in arc-shaped structure, and the anti-theft block is placed in the inside of rotating groove.
[0008] In one example, the surface of the screw tail is provided with a screw groove, and the separation hole is arranged at the center of the screw groove.
[0009] In one example, the outer side of the screw body is provided with a screw thread, the screw tail is integrally formed with the upper screw body, and the self-tapping head is integrally formed with the lower screw body.
[0010] The self-tapping screw with the improved structure can bring the following advantages
[0011] Advantages:
[0012] 1. The screw body is composed of the upper screw body and the lower screw body, and the upper screw body and the lower screw body are fixed by the clamping blocks penetrating through the perforations. When the screw body is rotated to be screwed into the object, in order to prevent the screw from being stolen, the pressure rod is inserted into the separation hole, so that the two groups of clamping blocks move towards the inside of the groove, causing the upper screw body and the lower screw body to separate, and the lower screw body does not have a screw groove and cannot be rotated out, thereby improving the practicability of the screw body and preventing theft.
[0013] 2. The utility model discloses a rotating groove is set up on the arc outer side of the screw body, and the anti-theft block is rotatably connected in the rotating groove, and the anti-theft block is in arc structure, and the side close to the screw tail is a plane, when rotating towards the position of the self-tapping head, the anti-theft block is placed in the rotating groove by the self-characteristic stress, when rotating towards the side of the screw tail, the side close to the screw tail of the anti-theft block is easy to be clamped with the object, causing the difficulty of rotating out of the screw body to increase, improving the overall safety and firmness. DRAWINGS
[0014] The drawings described herein are used to provide further understanding of the utility model and constitute a part of the utility model. The illustrative embodiments of the utility model and the description thereof are used to explain the utility model and do not constitute improper limitation on the utility model. In the drawings:
[0015] Figure 1 It is the overall structure schematic view of the self-tapping screw with the improved structure of the utility model.
[0016] Figure 2 It is the side view structure sectional view of the self-tapping screw with the improved structure of the utility model.
[0017] Figure 3 It is the connection structure schematic view of the upper screw body and the lower screw body in the self-tapping screw with the improved structure of the utility model.
[0018] Figure 4 It is the self-tapping screw with the improved structure of the utility model Figure 2Structure enlarged schematic view at middle A.
[0019] Figure: 1, screw body; 2, screw tail; 3, self-tapping head; 4, screw groove; 5, anti-theft block; 6, upper screw body; 7, lower screw body; 8, mounting groove; 9, groove; 10, spring; 11, clamping block; 12, through hole; 13, separation hole; 14, rotating groove; 15, cross rod; 16, pressing rod. DETAILED DESCRIPTION
[0020] In order to more clearly illustrate the overall concept of the utility model, the following will be described in detail with reference to the accompanying drawings.
[0021] In the description of the utility model, it is understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.
[0022] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.
[0023] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0024] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. In the description of the present application, the description of the terms "one scheme", "several schemes", "example", "specific example" or "several examples" means that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present application. In the description of the present application, the illustrative description of the above terms is not necessarily for the same scheme or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more schemes or examples in a suitable manner.
[0025] As Figures 1-4 The embodiment of the present application proposes a self-tapping screw with improved structure, which comprises a screw body 1, a screw tail 2, a self-tapping screw head 3, both ends of the screw body 1 are respectively the screw tail 2 and the self-tapping screw head 3, and the screw body 1 is composed of an upper screw body 6 and a lower screw body 7, an installation groove 8 is formed at one end of the lower screw body 7 away from the self-tapping screw head 3, one end of the upper screw body 6 away from the screw tail 2 is in a cylindrical structure, the upper screw body 6 is inserted into the installation groove 8, two groups of grooves 9 are symmetrically formed in the inside of the installation groove 8, a through hole 12 is formed in the position corresponding to the two groups of grooves 9 of the upper screw body 6, a separation hole 13 is formed at the center position of the screw tail 2, the separation hole 13 is communicated with the through hole 12, a clamping block 11 is slidably connected in the two groups of grooves 9, the clamping block 11 is connected with the inner wall of the groove 9 through a spring 10, the clamping block 11 passes through the upper screw body 6 and is placed in the through hole 12 and the separation hole 13, and a pressing rod 16 is inserted in the separation hole 13. Specifically, the pressing rod 16 is in a cylindrical structure, and the diameter of the pressing rod 16 is smaller than the diameter of the separation hole 13, and the clamping block 11 is in a spherical structure. Since the screw body 1 is composed of the upper screw body 6 and the lower screw body 7, and the upper screw body 6 and the lower screw body 7 are fixed by the clamping block 11 passing through the through hole 12, when the screw body 1 is rotated and screwed into the inside of an object, in order to prevent the screw from being stolen, the pressing rod 16 is inserted into the separation hole 13, so that the two clamping blocks 11 move towards the inside of the groove 9, causing the upper screw body 6 and the lower screw body 7 to separate, and the lower screw body 7 does not have a screw groove 4 and cannot be rotated out, thereby improving the practicability of the screw body 1 and preventing theft.
[0026] Specific, the arc-shaped outer side of the lower screw body 7 is uniformly provided with a rotating groove 14, and a horizontal rod 15 is installed in the rotating groove 14 near the self-tapping head 3. Specifically, the horizontal rod 15 is sleeved with an anti-theft block 5, the anti-theft block 5 is arc-shaped, and the anti-theft block 5 is arranged in the rotating groove 14. Specifically, the surface of the screw tail 2 is provided with a screw groove 4, and the separation hole 13 is arranged at the center position of the screw groove 4. Specifically, the outer side of the screw body 1 is provided with a thread, the screw tail 2 is integrally formed with the upper screw body 6, the self-tapping head 3 is integrally formed with the lower screw body 7, the rotating groove 14 is formed on the arc-shaped outer side of the screw body 1, the anti-theft block 5 is rotatably connected in the rotating groove 14, the anti-theft block 5 is arc-shaped, the side close to the screw tail 2 is a plane, when rotating towards the position of the self-tapping head 3, the anti-theft block 5 is arranged in the rotating groove 14 by utilizing its own characteristics, when rotating towards the side of the screw tail 2, the side close to the screw tail 2 of the anti-theft block 5 is easy to be clamped with the object, which increases the difficulty of rotating out the screw body 1, and improves the overall safety and firmness.
[0027] Working principle: when in use, since the screw body 1 is composed of the upper screw body 6 and the lower screw body 7, and the upper screw body 6 and the lower screw body 7 are fixed through the clamping blocks 11 passing through the perforations 12, when the screw body 1 is rotated and tapped into the object, in order to prevent the screw from being stolen, the pressure rod 16 is inserted into the separation hole 13, so that the two groups of clamping blocks 11 move towards the inside of the recess 9, the upper screw body 6 and the lower screw body 7 are separated, and the lower screw body 7 does not have the screw groove 4 and cannot be rotated out, which improves the practicability of the screw body 1 and prevents it from being stolen; the rotating groove 14 is formed on the arc-shaped outer side of the screw body 1, the anti-theft block 5 is rotatably connected in the rotating groove 14, and the anti-theft block 5 is arc-shaped, the side close to the screw tail 2 is a plane, when rotating towards the position of the self-tapping head 3, the anti-theft block 5 is arranged in the rotating groove 14 by utilizing its own characteristics, when rotating towards the side of the screw tail 2, the side close to the screw tail 2 of the anti-theft block 5 is easy to be clamped with the object, which increases the difficulty of rotating out the screw body 1, and improves the overall safety and firmness.
[0028] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment mainly describes the difference from other embodiments. Especially, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the related parts can be referred to the part of the method embodiment.
[0029] The above only describes the embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.
Claims
1. A self-tapping screw with improved structure, comprising a screw body (1), a screw shank (2), a self-tapping head (3), characterized in that, The both ends of the screw body (1) are screw tail (2) and self tapping head (3) respectively, and the screw body (1) is combined by upper screw body (6) and lower screw body (7), the end of the lower screw body (7) away from the self tapping head (3) is provided with mounting groove (8), the end of the upper screw body (6) away from the screw tail (2) is cylindrical structure, the end of the upper screw body (6) away from the screw tail (2) is inserted into the mounting groove (8), the inside of the mounting groove (8) is provided with two groups of grooves (9) symmetrically, the upper screw body (6) is provided with perforation (12) in the position corresponding to the two groups of grooves (9), the central position of the screw tail (2) is provided with separation hole (13), the separation hole (13) is communicated with the perforation (12), the two groups of grooves (9) are slidably connected with clamping block (11), the clamping block (11) is connected with the inner wall of the groove (9) through spring (10), the clamping block (11) passes through the upper screw body (6) and is placed in the perforation (12) and separation hole (13), the separation hole (13) is inserted with pressure rod (16).
2. The self-cutting truss screw with improved structure according to claim 1, wherein The pressure rod (16) is cylindrical structure, and the diameter of the pressure rod (16) is less than the diameter of the separation hole (13), the clamping block (11) is spherical structure.
3. The self-tapping screw with improved structure according to claim 1, wherein The arc-shaped outer side of the lower screw body (7) is uniformly provided with rotating groove (14), the position close to the self tapping head (3) in the rotating groove (14) is provided with horizontal rod (15).
4. The self-tapping screw with improved structure according to claim 3, wherein The horizontal rod (15) is provided with anti-theft block (5), the anti-theft block (5) is arc-shaped structure, and the anti-theft block (5) is placed in the rotating groove (14).
5. The self-tapping screw with improved structure according to claim 1, wherein The surface of the screw tail (2) is provided with screw groove (4), and the separation hole (13) is placed in the central position of the screw groove (4).
6. The self-tapping screw with improved structure according to claim 1, wherein The outer side of the screw body (1) is provided with screw thread, the screw tail (2) and the upper screw body (6) are integrally formed, and the self tapping head (3) and the lower screw body (7) are integrally formed.