Anti-theft screw
By designing a turning groove on the screw head and equipping it with an anti-theft plastic cap, the problem of screws being unable to prevent theft is solved, achieving the effect of screws being tamper-proof and theft-proof. Assembly is simple and safe.
Patent Information
- Application Number
- CN202520221878.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-12
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-02-12
AI Technical Summary
The existing screws have exposed grooves, making them unsuitable for use in situations where anti-theft requirements cannot be met.
An anti-theft screw has been designed with a wrench groove on the screw head and a removable anti-theft plastic cover. The anti-theft effect is achieved through a snap-fit connection and a foolproof structure, preventing the screw from being removed.
It achieves the effect of closing the screw groove after screwing in, thus preventing disassembly and theft. It is easy to assemble and avoids incorrect installation, and is safe and reliable to use.
Smart Images
Figure CN223923559U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fastener technology, and more specifically, to an anti-theft screw. Background Technology
[0002] The screw, once screwed in, is removable because its rotating groove is exposed, thus lacking anti-theft functionality and unsuitable for applications requiring anti-theft protection. Therefore, this utility model proposes an anti-theft screw. Utility Model Content
[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an anti-theft screw that is both theft-proof and safe to use.
[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: The anti-theft screw involved in this utility model includes a joint part with threads on the wall surface, one end of the joint part has an insertion part and the other end has a screw head, the center of the screw head has a rotating groove in the shape of a regular hexagonal prism, and an anti-theft plastic cover that covers the opening of the rotating groove is detachably connected to the screw head, the anti-theft plastic cover is embedded in the rotating groove.
[0005] The present invention is further configured such that: a process side hole extending radially is provided on the screw head, both ends of which are connected to the outside, and the process side hole passes through a set of groove walls of the turning groove;
[0006] The anti-theft plastic cover includes a top plate with a regular hexagonal outer contour, and a set of opposite sides of the top plate are respectively connected to a first cover side plate with elasticity. The first cover side plate is provided with a limiting protrusion that matches the process side hole.
[0007] The present invention is further configured such that: an anti-mistake post extending upward is provided at the center of the bottom of the turning groove, and an anti-mistake tube extending downward is provided at the center of the bottom of the top plate, and the anti-mistake tube is sleeved on the anti-mistake post.
[0008] The present invention is further configured such that: the anti-foolproof post is in the shape of a regular square prism; and a set of opposite sides of the anti-foolproof post are arranged parallel to the end face of any of the first cover side plates.
[0009] The present invention is further configured such that: a second cover side plate is provided on the remaining side of the cover top plate and embedded in the turning groove.
[0010] In summary, this utility model has the following beneficial effects:
[0011] 1. The anti-theft plastic cover covers the rotating groove, so that after the screw is screwed in, the groove is closed, achieving the effect of preventing disassembly and theft.
[0012] 2. The anti-theft plastic cover and screws are connected by a snap-fit mechanism, making assembly convenient.
[0013] 3. A foolproof structure is provided between the anti-theft plastic cover and the screw to prevent incorrect installation. Attached Figure Description
[0014] Figure 1 This is a cross-sectional structural diagram illustrating the screw head of this utility model;
[0015] Figure 2 This is a cross-sectional structural diagram illustrating the anti-theft plastic cover of this utility model;
[0016] Figure 3 This is a bottom view schematic diagram illustrating the anti-theft plastic cover structure of this utility model. Detailed Implementation
[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting the patent claims of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.
[0018] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.
[0019] Example 1
[0020] See Figures 1 to 3 As shown, the anti-theft screw involved in this embodiment includes a joint 1 with threads on the wall surface. One end of the joint 1 has an insertion part (not shown) and the other end has a screw head 2. The screw head 2 has a rotating groove 3 in the shape of a regular hexagonal prism in the center. The screw head 2 is detachably connected to an anti-theft plastic cover 4 that covers the opening of the rotating groove. The anti-theft plastic cover 4 is embedded in the rotating groove 3.
[0021] Furthermore, a process side hole 5 extending radially is provided on the screw head 2, and both ends of the process side hole 5 are connected to the outside. The process side hole 5 passes through a set of groove walls of the turning groove 3.
[0022] The anti-theft plastic cover 4 includes a top plate 41 with an outer contour of regular hexagon. A set of opposite sides of the top plate 41 are respectively connected to a first cover side plate 42 with elasticity. The first cover side plate 42 is provided with a limiting protrusion 43 that matches the process side hole 5.
[0023] In this embodiment, the anti-theft plastic cover 4 is fitted onto the screw head 2 of the anti-theft screw that has been screwed on, until the anti-theft plastic cover 4 is embedded in the turning groove 3 and the limiting protrusion 43 is embedded in the process side hole 5.
[0024] Example 2
[0025] See Figures 1 to 3 As shown, the anti-theft screw involved in this embodiment is further configured based on embodiment 1, wherein the center of the bottom of the turning groove 3 is provided with an upwardly extending anti-fool post 6, and the center of the bottom of the cover plate 41 is provided with a downwardly extending anti-fool tube 7, and the anti-fool tube 7 is sleeved on the anti-fool post 6.
[0026] Furthermore, the anti-mistake post 6 is in the shape of a regular square prism; a set of opposite sides of the anti-mistake post 6 are arranged parallel to the end face of any of the first cover side plates 42.
[0027] In this implementation scheme, the anti-foolproof post 6 is combined with the anti-foolproof tube 7 to prevent circumferential misalignment of the anti-theft plastic cover 4 when it is installed on the screw head 2, thus serving as a positioning and anti-foolproof function.
[0028] Example 3
[0029] See Figures 1 to 3 As shown, the anti-theft screw involved in this embodiment is further configured, based on embodiment 2, with a second cover side plate 44 embedded in the turning groove 3 on the remaining side of the cover top plate 41.
[0030] In this embodiment, the second cover side plate 44 is provided to block the gap between the cover top plate 41 and the turning groove 3, so that the snap-fit is tight.
[0031] The anti-theft screw involved in this utility model uses an anti-theft plastic cover to cover the rotating groove, so that the groove is closed after the screw is screwed in, achieving the effect of preventing disassembly and theft; the anti-theft plastic cover and the screw are connected by a snap-fit connection, which is convenient for assembly; and a foolproof structure is set between the anti-theft plastic cover and the screw to avoid incorrect installation. The overall function is perfect and the practicality is strong.
[0032] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the actual orientation or positional relationship shown. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the embodiments and according to the specific circumstances.
[0033] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0034] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.
Claims
1. A theft-proof screw comprising a coupling portion having a wall surface provided with a screw thread, the coupling portion having a tapping portion at one end and a screw head at the other end, the screw head having a central wrench recess in the shape of a regular hexagonal prism, characterized in that: The anti-theft plastic cover is detachably connected to the slot of the screw head and covers the wrenching groove.
2. A theft deterrent screw as defined in claim 1, wherein: A process side hole is formed in the screw head and extends radially, both ends of the process side hole are connected to the outside, and the process side hole penetrates a group of groove walls of the wrenching groove; The anti-theft plastic cover comprises a cover top plate with a regular hexagonal shape, a group of opposite side edges of the cover top plate are respectively connected to a first cover side plate with elasticity, and the first cover side plate is provided with a limiting protrusion matched with the process side hole.
3. A tamperproof screw as claimed in claim 2, wherein: A foolproof column extending upward is arranged in the center of the groove bottom of the wrenching groove, and a foolproof pipe extending downward is arranged in the center of the bottom of the cover top plate and is sleeved on the foolproof column.
4. A tamperproof screw according to claim 3, wherein: The foolproof column is in the shape of a regular quadrangular prism, and a group of opposite side surfaces of the foolproof column are respectively arranged in parallel with the end surface of any first cover side plate.
5. A tamperproof screw according to any one of claims 2 to 4 wherein: Second cover side plates embedded in the wrenching groove are arranged on the remaining side edges of the cover top plate.