Anti-theft nut
By introducing an inclined angle and mounting groove structure into the nut design, combined with elastic elements and temporary sleeves, the problem of loosening of ball anti-theft nuts is solved, achieving stable locking and improved fastening effect.
Patent Information
- Application Number
- CN202520395694.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-07
AI Technical Summary
Existing ball anti-theft nuts are prone to loosening after being tightened, resulting in an unsatisfactory tightening and affecting the anti-theft effect.
An anti-theft nut was designed with a threaded through hole, including a guide section and an inclined section. The inclined section forms an inclined angle with the central axis of the main body. An installation groove is provided in the threaded through hole, and a ball is provided in the installation groove. The depth of the installation groove gradually decreases. It is equipped with an elastic element and a temporary sleeve structure to prevent the ball from falling out.
It achieves stable locking of the ball anti-theft nut, prevents loosening, and improves the tightness and anti-theft effect.
Smart Images
Figure CN223839519U_ABST
Abstract
Description
Technical Field
[0001] The embodiments disclosed herein relate to the field of nut technology, and more specifically, to an anti-theft nut. Background Technology
[0002] Anti-theft nuts play a certain role in preventing loosening and theft of mechanical component connections and fasteners. Currently, anti-theft nuts are mainly divided into several categories: spiral wedge anti-loosening nuts, torsion strip anti-theft nuts, needle roller anti-theft nuts, and ball roller anti-theft nuts.
[0003] Among these issues, ball bearing anti-theft nuts have revealed several problems during long-term use. First, installing the balls into the grooves is difficult and time-consuming. Second, the stability of the plug after installation is poor, and it is prone to falling out. Furthermore, even after tightening, the ball bearing anti-theft nuts are prone to loosening, which not only prevents them from achieving the desired tightness but also severely impacts their anti-theft effectiveness. Utility Model Content
[0004] To overcome the above-mentioned defects, the embodiments of this disclosure provide an anti-theft nut, which solves the technical problem that ball anti-theft nuts in the prior art are still prone to loosening after being tightened.
[0005] According to one aspect, at least one embodiment of this disclosure provides an anti-theft nut, comprising:
[0006] The main body has a threaded through hole, the threaded through hole has a guide section and an inclined section, the central axis of the guide section is collinear with the central axis of the main body, the central axis of the inclined section has an inclined angle with the central axis of the main body, and the threaded through hole has a plurality of mounting grooves.
[0007] Each of the mounting slots contains one ball bearing. The depth of the mounting slot gradually decreases along the tightening direction of the main body. The deepest part of the mounting slot is greater than or equal to the diameter of the ball bearing, and the shallowest part of the mounting slot is less than the diameter of the ball bearing.
[0008] For example, in at least one embodiment of this disclosure, a plurality of the mounting grooves are arranged at intervals along the circumference of the threaded through hole.
[0009] For example, in at least one embodiment of the present disclosure, the thickness of the guide section is greater than the thickness of the inclined section.
[0010] For example, in an anti-theft nut provided in at least one embodiment of this disclosure, the threaded through hole also has an installation gap, the installation gap being located between the guide section and the inclined section, and the installation groove being located on the installation gap.
[0011] For example, at least one embodiment of this disclosure provides an anti-theft nut that further includes:
[0012] An elastic element has one end disposed on the inner wall of the mounting groove and the other end disposed on the ball bearing. The elastic element is used to provide a force for the ball bearing to move in the direction of decreasing depth of the mounting groove.
[0013] For example, at least one embodiment of this disclosure provides an anti-theft nut that further includes:
[0014] A cylindrical temporary sleeve, one end of which is used to engage with the threaded through hole, is used to prevent the ball from falling out of the mounting groove.
[0015] For example, at least one embodiment of this disclosure provides an anti-theft nut that further includes:
[0016] The second temporary sleeve is fitted over the main body at one end and attached to the other end of the cylindrical temporary sleeve at the other end.
[0017] For example, in at least one embodiment of this disclosure, an anti-theft nut is provided, wherein the cylindrical temporary sleeve has a weight-reducing groove.
[0018] For example, in an anti-theft nut provided in at least one embodiment of this disclosure, the cylindrical temporary sleeve and the second temporary sleeve are an integral structure.
[0019] The beneficial effects of the embodiments disclosed herein are as follows:
[0020] In this disclosure, a threaded through hole is machined into the main body. The guide section and the inclined section can be machined using conventional threading processes, such as turning or tapping. Through machining, an inclined angle is formed between the central axis of the main body and the central axis of the inclined section. For example, this can be achieved by adjusting the angle of the tool or workpiece during machining.
[0021] Because the threaded connection is a clearance fit, there is an inclined angle between the central axis of the main body and the central axis of the inclined section (i.e., the central axis of the screw and the central axis of the inclined section). This allows the threads on the inclined section to contact and press against each other after the main body is installed, thus achieving locking without breaking the threads. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.
[0023] Figure 1This is a schematic diagram of the structure of an anti-theft nut in one embodiment of the present disclosure;
[0024] Figure 2 for Figure 1 A schematic diagram of a partial lateral section in the embodiment;
[0025] Figure 3 for Figure 1 A longitudinal partial sectional view of the embodiment;
[0026] Figure 4 for Figure 1 A schematic diagram of the second temporary sleeve structure in the embodiment;
[0027] Figure 5 for Figure 1 A schematic diagram of a cylindrical temporary sleeve structure is shown in the embodiment.
[0028] In the figure: 1. Main body, 11. Threaded through hole, 111. Guide section, 112. Inclined section, 24. Installation gap, 241. Installation groove, 3. Ball bearing, 4. Elastic element, 5. Cylindrical temporary sleeve, 6. Second temporary sleeve, 51. Weight reduction groove. Detailed Implementation
[0029] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.
[0030] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0031] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.
[0032] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0033] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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, they should not be construed as limitations on this disclosure.
[0034] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0035] like Figure 1 , Figure 2 As shown, this illustration depicts an anti-theft nut according to an embodiment of the present disclosure. The main body 1 has a threaded through hole 11, which includes a guide section 111 and an inclined section 112. The central axis of the guide section 111 is collinear with the central axis of the main body 1. The central axis of the inclined section 112 forms an inclined angle with the central axis of the main body 1. The threaded through hole 11 contains several mounting grooves 241. A ball bearing 3 is movably disposed within each mounting groove 241. The depth of the mounting groove 241 gradually decreases along the tightening direction of the main body 1. The deepest point of the mounting groove 241 is greater than or equal to the diameter of the ball bearing 3, and the shallowest point is less than the diameter of the ball bearing 3. The inclined angle ranges from 0.2° to 1.5°, ensuring both proper installation and locking.
[0036] For example, such as Figure 2 and Figure 1 As shown, a threaded through hole 11 is machined on the main body 1. The threaded through hole 11 has a bend, which divides the threaded through hole 11 into a guide section 111 and an inclined section 112. The guide section 111 is coaxial with the main body 1 to facilitate screwing into the screw. The inclined section 112 has an inclined angle with the screw axis.
[0037] Since the threaded fit is a clearance fit, the inclined angle allows the thread on the inclined section 112 to contact and press against the thread on the stud after the main body 1 is installed, thus achieving locking without breaking the thread.
[0038] In some examples, a plurality of mounting slots 241 are spaced apart around the circumference of the threaded through hole 11. In some examples, the thickness of the guide section 111 is greater than the thickness of the inclined section 112.
[0039] For example, such as Figure 3 As shown, the thickness of the guide section 111 is greater than the thickness of the inclined section 112. During installation, the guide section 111 is positioned downwards, and it is installed first. Because the central axis of the guide section 111 is collinear with the central axis of the threaded through hole 11, installation is convenient. The thicker guide section 111 provides greater load-bearing capacity and better threaded connection strength, ensuring that the main body 1 will not be damaged due to excessive force during long-term use. At the same time, the thinner inclined section 112, to a certain extent, prevents the inclined section 112 from being excessively offset, ensuring that the inclined section 112 can be used and installed.
[0040] In some examples, the threaded through hole 11 also has a mounting gap 24 located between the guide section 111 and the inclined section 112, and a mounting groove 241 located on the mounting gap 24.
[0041] For example, such as Figure 2 As shown, there is an installation gap 24 between the threads of the guide section 111 and the inclined section 112. The threads between the guide section 111 and the inclined section 112 are discontinuous due to the presence of the installation gap 24.
[0042] The installation gap 24 provides a buffer for the installation of the inclined section 112, preventing the threads on the stud from breaking when tightened from the guide section 111 to the inclined section 112. At the same time, the existence of the installation gap 24 facilitates the machining of the inclined section 112 and the guide section 111. The installation gap 24 also provides space for the subsequent installation of other components, increasing the functionality of the main body 1.
[0043] In some examples, one end of the elastic element 4 is disposed on the inner wall of the mounting groove 241, and the other end is disposed on the ball 3. The elastic element 4 is used to provide the ball 3 to move in the direction of the decrease in depth of the mounting groove 241.
[0044] For example, such as Figure 2 As shown, select a suitable elastic element 4, such as a spring. Install one end of the elastic element 4 in the mounting groove 241 and the other end on the ball 3, ensuring that the elastic element 4 can provide the force for the ball 3 to move in the direction of decreasing depth of the mounting groove 241.
[0045] The elastic element 4 allows the ball 3 to be held more stably in the mounting groove 241, and can promptly push the ball 3 to the appropriate position during the tightening or loosening of the nut.
[0046] In some examples, one end of the cylindrical temporary sleeve 5 is used to engage with the threaded through hole 11 and the second through hole 21, and the cylindrical temporary sleeve 5 is used to prevent the ball 3 from falling out of the mounting groove 241.
[0047] For example, such as Figure 5 As shown, one end of the cylindrical temporary sleeve 5 can be inserted into the threaded through hole 1. Before installing the anti-theft nut, the cylindrical temporary sleeve 5 is inserted into the threaded through hole 11 to prevent the ball bearing 3 from falling out of the mounting groove 241. The cylindrical temporary sleeve 5 plays a protective role during installation, preventing the ball bearing 3 from falling out and ensuring the normal installation and use of the anti-theft nut. At the same time, it can be removed after installation without affecting the normal function of the nut. The cylindrical temporary sleeve 5 can be inserted into one end of the inclined section 112, which can reduce the thickness of the cylindrical temporary sleeve 5 and further reduce costs.
[0048] In some examples, one end of the second temporary sleeve 6 is fitted over the main body 1, and the other end is set on the other end of the cylindrical temporary sleeve 5.
[0049] For example, such as Figure 4 As shown, the cylindrical temporary sleeve 5 is prone to falling off, which affects the normal use of the anti-theft nut. A second temporary sleeve 6 is fitted over the main body 1 at one end, and connected to the other end of the cylindrical temporary sleeve 5 at the other end. To reduce the likelihood of the cylindrical temporary sleeve 5 falling off, when the second temporary sleeve 6 is on the main body 1, the main body 1 tensions the second temporary sleeve 6, requiring a certain amount of force to detach it. During storage and transportation of the anti-theft nut, the cooperation between the second temporary sleeve 6 and the cylindrical temporary sleeve 5 further secures the ball bearing 3, preventing it from falling out.
[0050] The combined use of the second temporary sleeve 6 and the cylindrical temporary sleeve 5 enhances the protection of the ball bearing 3. At the same time, this structure also facilitates the overall installation and disassembly operations.
[0051] In some examples, the cylindrical temporary sleeve 5 has a weight-reducing groove 51.
[0052] For example, such as Figure 5 As shown, the weight-reducing groove 51 reduces the weight of the cylindrical temporary sleeve 5, lowers material costs, and also facilitates operation and carrying. Furthermore, the weight-reducing groove 51 facilitates the installation and removal of the cylindrical temporary sleeve 5.
[0053] In some examples, the cylindrical temporary sleeve 5 and the second temporary sleeve 6 are an integral structure.
[0054] For example, such as Figure 5 As shown, the cylindrical temporary sleeve 5 and the second temporary sleeve 6 are manufactured using a one-piece molding process, making them a single structure. For example, this can be achieved through injection molding.
[0055] The integrated cylindrical temporary sleeve 5 and the second temporary sleeve 6 offer higher strength and stability, reduce the connection and assembly steps between components, and improve production efficiency and product quality. At the same time, they also reduce the risk of component separation during use.
[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.
Claims
1. An anti-theft nut, characterized in that, include: The main body (1) has a threaded through hole (11), the threaded through hole (11) has a guide section (111) and an inclined section (112), the central axis of the guide section (111) is collinear with the central axis of the main body (1), the central axis of the inclined section (112) has an inclined angle with the central axis of the main body (1), and the threaded through hole (11) has a plurality of mounting grooves (241). A ball (3) is movably disposed in each of the mounting grooves (241). The depth of the mounting groove (241) gradually decreases along the tightening direction of the main body (1). The deepest part of the mounting groove (241) is greater than or equal to the diameter of the ball (3), and the shallowest part of the mounting groove (241) is less than the diameter of the ball (3).
2. The anti-theft nut according to claim 1, characterized in that, Several mounting slots (241) are spaced apart around the circumference of the threaded through hole (11).
3. The anti-theft nut according to claim 1, characterized in that, The thickness of the guide segment (111) is greater than the thickness of the inclined segment (112).
4. The anti-theft nut according to claim 1, characterized in that, The threaded through hole (11) also has an installation gap (24) located between the guide section (111) and the inclined section (112), and the installation groove (241) is located on the installation gap (24).
5. The anti-theft nut according to claim 1, characterized in that, Also includes: The elastic element (4) has one end disposed on the inner wall of the mounting groove (241) and the other end disposed on the ball (3). The elastic element (4) is used to provide a force for the ball (3) to move in the direction of the reduction in depth of the mounting groove (241).
6. The anti-theft nut according to claim 1, characterized in that, Also includes: A cylindrical temporary sleeve (5) is used to insert one end into the threaded through hole (11). The cylindrical temporary sleeve (5) is used to prevent the ball (3) from falling out of the mounting groove (241).
7. The anti-theft nut according to claim 6, characterized in that, Also includes: The second temporary sleeve (6) is fitted on the outside of the main body (1) at one end and set on the other end of the cylindrical temporary sleeve (5) at the other end.
8. The anti-theft nut according to claim 6, characterized in that, The cylindrical temporary sleeve (5) has a weight-reducing groove (51).
9. The anti-theft nut according to claim 7, characterized in that, The cylindrical temporary sleeve (5) and the second temporary sleeve (6) are an integral structure.