Locking screw fastener and locking structure

Abstract

The application provides a locking threaded fastener and locking structure, and belongs to the field of fasteners. The fastener comprises a metal rod and a threaded structure. The outer sidewall of the metal rod is provided with the threaded structure, and the top end of the metal rod is fixedly connected with a hexagonal head. The inner tangent circle diameter of the hexagonal head is larger than the diameter of the metal rod. In the process of fastening the metal rod into the inner hole, the bottom surface of the vertical plate is tightly pressed against the surface of the equipment. At this time, the vertical plate drives the movable plate to move in the top groove by continuously rotating the hexagonal head. The movable plate pulls the movable block through the vertical pipe, so that the movable block moves into the movable groove. Because the movable block and the inner wall of the movable groove are inclined, the movable block expands the lower end of the metal rod at this time, so that the threaded structure on the metal rod is tightly pressed against the sidewall of the inner hole, thereby increasing the locking effect between the threaded structure and the inner hole, and effectively increasing the locking reliability of the fastener.

Description

Technical Field

[0001] This invention belongs to the field of fastener technology, specifically relating to a locking threaded fastener and locking structure. Background Technology

[0002] As a key component for enabling detachable connections of parts, the reliability of threaded fasteners directly affects the operational stability and safety of the entire equipment.

[0003] Currently, common threaded fasteners mainly rely on the friction between the threads and the preload to achieve locking. However, under complex working conditions such as vibration, impact, and temperature changes, insufficient friction and failure of the preload can easily cause the threaded pair to loosen, leading to connection failure and causing great harm to the stability of the equipment.

[0004] To improve the locking effect of threaded fasteners, existing technologies often employ adhesive application for anti-loosening treatment. However, in these technologies, the adhesive is typically applied before tightening, making it difficult for operators to control the application location and amount. This can easily lead to insufficient or excessive adhesive, hindering fastener installation. Furthermore, once the adhesive has fully cured, a rigid bond forms between the fastener and the inner hole, often requiring forceful disassembly. This not only damages the fastener and the connected components but also increases maintenance costs and difficulty, ultimately impairing the fastener's usability.

[0005] Based on the above reasons, this invention proposes a locking threaded fastener and locking structure, which can achieve a reliable connection between the fastener and the inner hole through structural design, facilitate the application of glue to enhance the locking effect, and enable reliable disassembly, thus facilitating the use of the fastener. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a locking threaded fastener and locking structure that has the advantages of reliable locking and convenient use.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A locking threaded fastener includes a metal rod with a threaded structure on its outer side wall and a hexagonal head fixedly connected to the top of the metal rod, wherein the inner diameter of the hexagonal head is larger than the diameter of the metal rod.

[0008] Preferably, the bottom surface of the hexagonal head has several anti-slip patterns.

[0009] A locking structure for locking threaded fasteners, the locking structure being applied to a locking threaded fastener as described in any one of claims 1-2, includes a top groove, a top groove being formed on the top surface of a hexagonal head, a movable plate being inserted into the top groove, a vertical plate being provided on the side wall of the movable plate, and a vertical tube being movably connected to the center of the movable plate, the vertical plate extending out of the bottom surface of the hexagonal head, a movable groove being formed on the bottom surface of a metal rod, a movable block being movably connected to the movable groove and matched therewith, an adjustable locking assembly being provided in the vertical plate, a cover plate being movably connected in the top groove, a pressure plate being fixedly connected to the cover plate, and an internal flow channel penetrating the vertical tube being formed in the metal rod.

[0010] Preferably, the movable groove is Y-shaped and the sidewalls are inclined, and the movable block is fixedly connected to the vertical pipe.

[0011] Preferably, each of the movable blocks has a sliding plate fixedly connected to its side wall, and each of the movable slots has a sliding groove on its side wall. The sliding plates are inserted into the sliding grooves respectively, and the sliding plates and the sliding grooves are movably connected.

[0012] Preferably, the slide plate has a T-shaped cross-section, and the slide groove is configured to match the cross-section of the slide plate.

[0013] Preferably, the adjustable locking assembly includes an inner groove, which is formed inside the vertical plate, and a trapezoidal plate is provided inside the inner groove. Positioning rods are movably connected to both sides of the trapezoidal plate. One end of the positioning rod extends out of the side wall of the vertical plate and is inserted into the inner wall of the movable plate. A circular hole is formed at the center of the bottom surface of the trapezoidal plate. A spring is fixedly connected to the circular hole. A fixing rod is fixedly connected to the other end of the spring. The fixing rod extends out of the circular hole and is fixedly connected to the bottom surface of the inner groove. A movable rod is fixedly connected to the top surface of the trapezoidal plate. The top end of the movable rod penetrates the top surface of the vertical plate and is fixedly connected to a top plate.

[0014] Preferably, inclined grooves are provided on both side walls of the trapezoidal plate, and connecting blocks are fixedly connected to the positioning rods, with the connecting blocks being movably connected to the inclined grooves.

[0015] Preferably, the top groove is arranged in a cross shape, and the pressure plate is matched with the inner wall of the top groove.

[0016] Preferably, the movable plate is arranged in a cross shape, and a sealing ring is fixedly connected to the side wall of the movable plate.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects: During the process of fastening the metal rod into the inner hole, the bottom surface of the vertical plate presses against the surface of the equipment. At this time, by continuing to rotate the hexagonal head, the vertical plate will drive the movable plate to move in the top groove. The movable plate pulls the movable block through the vertical tube, causing the movable block to move into the movable groove. Because the movable block and the inner wall of the movable groove are inclined, the movable block will expand the lower end of the metal rod, so that the threaded structure on the metal rod is pressed against the side wall of the inner hole, increasing the locking effect between the threaded structure and the inner hole, thereby effectively increasing the locking reliability of this fastener. This invention inserts a pressure plate into the top groove and taps the cover plate to push the movable plate. The movable plate then moves the movable block, and the sliding plate on the movable block moves in the groove on the side wall of the movable groove. This pulls the lower end of the metal rod towards the center, releasing the tension between the threaded structure and the inner hole. As a result, the fastener can be easily removed by rotating the hexagonal head in the opposite direction. This invention involves filling the top groove with a certain amount of glue and covering it with a cover plate. When the fastener is tightened, as the movable plate moves upward in the top groove, the glue continuously enters the vertical pipe. Once the vertical pipe is connected to the inner flow channel, the glue flows along the inner flow channel into the threaded structure, achieving precise glue application between the threaded structure and the inner hole. This reduces the occurrence of insufficient tightening due to insufficient glue application and the impact of glue overflow on the equipment, further improving the reliability of the fastening. Attached Figure Description

[0018] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0019] Figure 1 This is a schematic diagram of the overall frontal three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall side perspective structure of the present invention; Figure 3 This is a three-dimensional cross-sectional view of the internal structure of the present invention; Figure 4 This is a three-dimensional structural diagram of the movable plate of the present invention; Figure 5 This is a three-dimensional structural diagram of the movable block of the present invention; Figure 6 This is a three-dimensional structural diagram of the internal structure of the vertical plate of the present invention; Figure 7 This is a three-dimensional structural diagram of the cover plate of the present invention; Figure 8 This is a three-dimensional structural diagram of the locking threaded fastener of the present invention; Figure 9This is a three-dimensional structural diagram of the locking threaded fastener of the present invention from another angle.

[0020] Among them, 1. Metal rod; 2. Hexagonal head; 3. Top groove; 4. Movable plate; 5. Vertical plate; 6. Vertical pipe; 7. Movable groove; 8. Movable block; 9. Adjustable locking assembly; 10. Cover plate; 11. Pressure plate; 12. Inner flow channel; 13. Slide plate; 14. Slide groove; 15. Trapezoidal plate; 16. Positioning rod; 17. Round hole; 18. Spring; 19. Fixed rod; 20. Movable rod; 21. Top plate; 22. Inclined groove; 23. Connecting block; 24. Sealing ring; 25. Anti-slip texture; 26. Threaded structure.

[0021] As shown in the figure, specific structures and devices are labeled in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0022] The locking threaded fastener and locking structure provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0023] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0024] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0025] It is understood that the meanings of “on”, “above” and “above” in this disclosure should be interpreted in the broadest sense, such that “on” means not only “directly on” something, but also includes something with an intermediary feature or layer, and that “above” or “above” means not only “on” something, but also includes something “above” or “above” without an intermediary feature or layer.

[0026] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0027] like Figure 1-9 As shown, an embodiment of the present invention provides a locking threaded fastener, including a metal rod 1. A threaded structure 26 is provided on the outer side wall of the metal rod 1, and a hexagonal head 2 is fixedly connected to the top of the metal rod 1. The inner diameter of the hexagonal head 2 is larger than the diameter of the metal rod 1. Several anti-slip patterns 25 are provided on the bottom surface of the hexagonal head 2. By rotating the hexagonal head 2, the metal rod 1 can be rotated together. The locking function can be achieved by the engagement between the threaded structure 26 on the metal rod 1 and the inner hole.

[0028] A locking structure for locking threaded fasteners is provided. The locking structure is applied to a locking threaded fastener and includes a top groove 3. A top groove 3 is provided on the top surface of a hexagonal head 2. A movable plate 4 is inserted into the top groove 3. A vertical plate 5 is provided on the side wall of the movable plate 4. A vertical tube 6 is movably connected to the center of the movable plate 4. The vertical plate 5 extends out of the bottom surface of the hexagonal head 2. A movable groove 7 is provided on the bottom surface of a metal rod 1. The movable groove 7 is Y-shaped and its side wall is inclined. A movable block 8 is movably connected to the movable groove 7 and is matched therewith. A sliding plate 13 is fixedly connected to the side wall of each movable block 8. A sliding groove 14 is provided on the side wall of each movable groove 7. The sliding plate 13 is inserted into the sliding groove 14 and is movably connected to the sliding groove 14. The cross section of the sliding plate 13 is T-shaped and the cross section of the sliding groove 14 is matched with that of the sliding plate 13. In the technical solution of this embodiment, during the process of fastening the metal rod 1 into the inner hole, the bottom surface of the vertical plate 5 is pressed against the surface of the equipment. At this time, by continuing to rotate the hexagonal head 2, the vertical plate 5 will drive the movable plate 4 to move in the top groove 3. The movable plate 4 pulls the movable block 8 through the vertical tube 6, causing the movable block 8 to move into the movable groove 7. Because the movable block 8 and the inner wall of the movable groove 7 are inclined, the movable block 8 will expand the lower end of the metal rod 1, so that the threaded structure 26 on the metal rod 1 is pressed against the inner hole side wall, increasing the locking effect between the threaded structure 26 and the inner hole, thereby effectively increasing the locking reliability of this fastener. The movable block 8 is fixedly connected to the vertical tube 6. An adjustable locking component 9 is provided in the vertical plate 5. The adjustable locking component 9 includes an inner groove, which is opened inside the vertical plate 5. A trapezoidal plate 15 is provided in the inner groove. Positioning rods 16 are movably connected to both sides of the trapezoidal plate 15. One end of the positioning rod 16 extends out of the side wall of the vertical plate 5 and is inserted into the inner wall of the movable plate 4. A circular hole 17 is opened in the center of the bottom surface of the trapezoidal plate 15. A spring 18 is fixedly connected in the circular hole 17. A fixing rod 19 is fixedly connected to the other end of the spring 18. The fixing rod 19 extends out of the circular hole 17 and is fixedly connected to the bottom surface of the inner groove. A movable rod 20 is fixedly connected to the top surface of the trapezoidal plate 15. The top end of the movable rod 20 penetrates the top surface of the vertical plate 5 and is fixedly connected to the top plate 21. A cover plate 10 is movably connected in the top groove 3. A pressure plate 11 is fixedly connected to the cover plate 10. In the technical solution of this embodiment, when the fastener needs to be disassembled, the rise of the vertical plate 4 during installation causes the top plate 21 to press against the cover plate 10. The top plate 21 pushes the trapezoidal plate 15 to move through the movable rod 20. The spring 18 is compressed and the two positioning rods 16 are pulled out from the movable plate 4, releasing the lock between the vertical plate 5 and the movable plate 4. At this time, it is only necessary to remove the cover plate 10 and insert the pressure plate 11 into the top groove 3. By tapping the cover plate 10, the pressure plate 11 pushes the movable plate 4. The movable plate 4 drives the movable block 8 to move. The sliding plate 13 on the movable block 8 moves in the sliding groove 14 on the side wall of the movable groove 7, thereby pulling the lower end of the metal rod 1 towards the center, releasing the tension between the threaded structure 26 and the inner hole. Thus, the fastener can be easily disassembled by rotating the hexagonal head 2 in the opposite direction. Furthermore, inclined grooves 22 are provided on both side walls of the trapezoidal plate 15, and connecting blocks 23 are fixedly connected to the positioning rods 16. The connecting blocks 23 are movably connected to the inclined grooves 22, which allows the trapezoidal plate 15 to drive the positioning rods 16 to move. The metal rod 1 has an inner flow channel 12 that penetrates the vertical pipe 6. The top groove 3 is arranged in a cross shape. The pressure plate 11 is matched with the inner wall of the top groove 3. The movable plate 4 is arranged in a cross shape, and a sealing ring 24 is fixedly connected to the side wall of the movable plate 4. In the technical solution of this embodiment, when it is necessary to use glue to lock the fastener, simply fill the top groove 3 with a certain amount of glue and cover it with the cover plate 10. When the fastener is tightened, as the movable plate 4 moves upward in the top groove 3, the glue will continuously enter the vertical pipe 6. When the vertical pipe 6 is connected to the inner flow channel 12, the glue will flow along the inner flow channel 12 into the threaded structure 26, realizing the precise glue injection operation between the threaded structure 26 and the inner hole, reducing the occurrence of insufficient locking caused by insufficient glue application and the impact of glue overflow on the equipment, and further improving the fastening reliability.

[0029] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0030] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A locking threaded fastener, comprising a metal rod (1), characterized in that, The outer wall of the metal rod (1) is provided with a threaded structure (26), and the top end of the metal rod (1) is fixedly connected with a hexagonal head (2), the inner circle diameter of the hexagonal head (2) is larger than the diameter of the metal rod (1).

2. A locking threaded fastener according to claim 1, characterized in that, The bottom surface of the hexagonal head (2) has several anti-slip textures (25).

3. A locking structure for locking threaded fasteners, characterized in that, The locking structure is applied to a locking threaded fastener according to any one of claims 1-2, including a top groove (3), a top groove (3) is provided on the top surface of the hexagonal head (2), a movable plate (4) is inserted in the top groove (3), a vertical plate (5) is provided on the side wall of the movable plate (4), and a vertical tube (6) is movably connected to the center of the movable plate (4), the vertical plate (5) extends out of the bottom surface of the hexagonal head (2), a movable groove (7) is provided on the bottom surface of the metal rod (1), a movable block (8) is movably connected in the movable groove (7) and matched therewith, an adjustable locking assembly (9) is provided in the vertical plate (5), a cover plate (10) is movably connected in the top groove (3), a pressure plate (11) is fixedly connected on the cover plate (10), and an inner flow channel (12) penetrating the vertical tube (6) is provided in the metal rod (1).

4. The locking structure for a threaded fastener according to claim 3, characterized in that, The movable groove (7) is Y-shaped and its sidewalls are inclined. The movable block (8) is fixedly connected to the vertical pipe (6).

5. The locking structure for locking threaded fasteners according to claim 4, characterized in that, Each movable block (8) has a slide plate (13) fixedly connected to its side wall, and each movable groove (7) has a sliding groove (14) opened on its side wall. The slide plates (13) are inserted into the sliding grooves (14) respectively, and the slide plates (13) and the sliding grooves (14) are movably connected.

6. A locking structure for locking threaded fasteners according to claim 5, characterized in that, The cross-section of the slide plate (13) is T-shaped, and the groove (14) is matched with the cross-section of the slide plate (13).

7. The locking structure for a threaded fastener according to claim 6, characterized in that, The adjustable locking assembly (9) includes an inner groove, which is opened inside the vertical plate (5), and a trapezoidal plate (15) is provided in the inner groove. Positioning rods (16) are movably connected to both sides of the trapezoidal plate (15). One end of the positioning rod (16) extends out of the side wall of the vertical plate (5) and is inserted into the inner wall of the movable plate (4). A circular hole (17) is opened in the center of the bottom surface of the trapezoidal plate (15). A spring (18) is fixedly connected in the circular hole (17). A fixing rod (19) is fixedly connected to the other end of the spring (18). The fixing rod (19) extends out of the circular hole (17) and is fixedly connected to the bottom surface of the inner groove. A movable rod (20) is fixedly connected to the top surface of the trapezoidal plate (15). The top end of the movable rod (20) penetrates the top surface of the vertical plate (5) and is fixedly connected to a top plate (21).

8. A locking structure for locking threaded fasteners according to claim 7, characterized in that, The trapezoidal plate (15) has inclined grooves (22) on both side walls, and the positioning rod (16) is fixedly connected to a connecting block (23), which is movably connected to the inclined groove (22).

9. A locking structure for locking threaded fasteners according to claim 8, characterized in that, The top groove (3) is arranged in a cross shape, and the pressure plate (11) is matched with the inner wall of the top groove (3).

10. The locking structure for a threaded fastener according to claim 9, characterized in that, The movable plate (4) is arranged in a cross shape, and a sealing ring (24) is fixedly connected to the side wall of the movable plate (4).

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