Interlocking meshing type anti-loose fastener structure

Abstract

The invention relates to the technical field of fasteners, and discloses an interlocking meshing type anti-loosening fastener structure which comprises a fastening seat, a workpiece is fixedly connected to the lower portion of the fastening seat, a threaded hole is formed in the upper surface of the workpiece, a through hole is formed in the middle of the fastening seat, a stud is in threaded connection with the interior of the threaded hole, and an anti-loosening assembly is arranged on the upper surface of the stud; the anti-loosening assembly comprises a connecting block, a gear ring is fixedly connected to the outer portion of the connecting block, a rotary knob is fixedly connected to the upper surface of the connecting block, and a connecting groove is formed in one side of the through hole. The locking effect when the stud is connected with the threaded hole is enhanced, loosening and falling of the stud caused by long-time use or vibration are reduced through meshing interlocking, the fastening performance is improved, the locking assembly is used for limiting and locking the anti-loosening assembly, the phenomenon that the function is reduced due to automatic rotation of the rotary knob is prevented, the buffer assembly buffers the rotary knob, and the service life of the rotary knob is prolonged. And large double acting force generated by the fastener and the surface of a workpiece when the fastener is vibrated by external force is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of fasteners, and particularly to an interlocking and meshing anti-loosening fastener structure. Background Art

[0002] Fasteners are a class of components widely used in mechanical engineering. They are mainly used to firmly connect two or more parts into a whole, and are components for connecting and fastening parts. They have the characteristics of a wide variety of types, different specifications, high standardization and serialization levels, and are widely used in industries such as energy, electronics, electrical appliances, machinery, chemical industry, metallurgy, molds, hydraulics, etc., as well as various fields such as machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, meters and supplies.

[0003] After retrieval, a Chinese patent with the publication number CN110904743B discloses a mechanical anti-loosening structure for turnout fasteners. In order to limit the rotation of the rail washer itself, the rail washer must abut against the upper and lower inclined surfaces of the space in the rail web, resulting in a relatively large external dimension of the rail washer; the thickness of the rail washer usually needs to fill the space in the rail web, and the installation position of the anti-rotation insert is placed outside the rail head, resulting in a relatively thick rail washer, causing material waste and increased manufacturing cost; there are many types of turnout rail parts, and the rail washer and the anti-rotation insert cooperating with it need to match various sizes of turnout rail parts, with poor versatility; both the rail washer and the anti-rotation insert are castings, with a relatively rough appearance, so the anti-loosening effect is firm. The anti-rotation support does not have to abut against the upper and lower inclined surfaces of the rail web space, and the space required for installing the anti-loosening piece is small, making this anti-loosening structure applicable to different rail types and bolt hole center heights, with strong versatility.

[0004] After retrieval, a Chinese patent with the publication number CN117905776A discloses an anti-loosening fastener structure. The structure is relatively complex. For example, a nut with a unique structure needs to be set, and a cooperating cylinder that cooperates with the nut with this structure also needs to be set, and it also needs to include structures such as a driving spring and a locking tooth ring. The complex structure will inevitably increase the processing difficulty. Therefore, by setting an anti-loosening structure, the anti-loosening performance of the main nut, the sub-nut and the screw rod is improved, and thus the anti-loosening effect is achieved.

[0005] The above anti-loosening fasteners prevent loosening between the nut and the screw rod. After a traditional stud fastener is separately connected to a threaded hole, it is usually prone to loosening due to long-term use, and the stud in the use process is prone to vibration under external force factors, such as vibration factors, resulting in the stud vibrating and generating reverse rotation and displacement inside the matching threaded hole, thus easily causing the screw rod to slowly fall off, reducing the fastening performance of the fastener. Summary of the Invention

[0006] The object of the present invention is to solve the drawbacks existing in the prior art, and a mutual locking and meshing type anti-loosening fastener structure is proposed.

[0007] To achieve the above object, the present invention adopts the following technical solutions: a mutual locking and meshing type anti-loosening fastener structure, including a fastening seat, a workpiece is fixedly connected below the fastening seat, a threaded hole is opened on the upper surface of the workpiece, a through hole is opened in the middle of the fastening seat, a stud is threadedly connected inside the threaded hole, and an anti-loosening component is arranged on the upper surface of the stud; The anti-loosening component includes a connecting block, a toothed ring is fixedly connected to the outside of the connecting block, a knob is fixedly connected to the upper surface of the connecting block, a connecting groove is opened on one side of the through hole, and an installation groove is opened on one side of the connecting groove.

[0008] As a further description of the above technical solution: A threaded rod is rotatably connected inside the installation groove, a moving block is threadedly connected to the outside of the threaded rod, and the moving block is slidably connected inside the installation groove.

[0009] As a further description of the above technical solution: Two connecting rods are fixedly connected to one side of the moving block, and a toothed plate is fixedly connected to one end of the two connecting rods.

[0010] As a further description of the above technical solution: A locking component is arranged at one end of the threaded rod, the locking component includes a driven bevel gear, the driven bevel gear is fixedly connected to one end of the threaded rod, a driving bevel gear is rotatably connected to the inner wall of the installation groove, and the driving bevel gear and the driven bevel gear are meshed with each other.

[0011] As a further description of the above technical solution: A shaft rod is fixedly connected to the middle of the driving bevel gear, and a turning knob is fixedly connected to one end of the shaft rod.

[0012] As a further description of the above technical solution: A fixing block is fixedly connected to one side of the turning knob, and a screw is penetrated through the fixing block.

[0013] As a further description of the above technical solution: A cross groove is opened on the upper surface of the screw, and a plurality of threaded grooves are opened on the upper surface of the fastening seat, and the plurality of threaded grooves are annularly distributed.

[0014] As a further description of the above technical solution: A buffer assembly is provided on the upper surface of the fastening base. The buffer assembly includes a plurality of mounting holes which are opened on the upper surface of the fastening base, and a limiting ring is fixedly connected to the upper surface of the mounting holes.

[0015] As a further description of the above technical solution: A spring is fixedly connected inside the mounting hole. One end of the spring is fixedly connected with a buffer block which is slidably connected inside the mounting hole, and the plurality of mounting holes are symmetrically distributed.

[0016] The present invention has the following beneficial effects: 1. Through the setting of the anti-loosening component, during the connection of the stud of the fastener to the threaded hole, the anti-loosening locking effect on the stud is enhanced, and the interlocking function is generated by the meshing effect, so as to limit and lock the stud fastener after installation, reducing the phenomenon that the stud slowly moves and falls off inside the threaded hole due to long-term use and vibration during use, and improving the fastening performance of the stud fastener.

[0017] 2. Through the setting of the locking component, when using the anti-loosening component, the locking component adds a function of limiting and locking the anti-loosening component, which helps to prevent the phenomenon that the rotary knob rotates by itself without human intervention, resulting in the reduction of the locking function of the anti-loosening component, facilitating double locking of the fastener, and further enhancing the anti-loosening effect of the fastener.

[0018] 3. Through the setting of the buffer component, it buffers the rotary knob in the installed fastener, which is beneficial for buffering when the fastener vibrates under external force and contacts the surface of the workpiece, reducing the double force generated by the fastener when contacting the surface of the workpiece, and the phenomenon that the fastener loosens under the large impact force of the double force. And it is convenient to push the rotary knob through the elastic force of the spring after the stud is connected to the threaded hole, so that the rotary knob drives the stud to be tightened, thereby improving the fastening performance of the fastener after installation.

[0019] The present invention enhances the locking effect when the stud is connected to the threaded hole, generates the interlocking function by the meshing effect, reduces the phenomenon of loosening and falling off of the stud due to long-term use or vibration through meshing and interlocking, helps to improve the fastening performance, and uses the locking component to limit and lock the anti-loosening component, thereby reducing the phenomenon that the rotary knob rotates by itself and causes the reduction of the function, helping to achieve double locking, further enhancing the anti-loosening effect, and the buffer component helps to buffer the rotary knob, reducing the large double force generated by the fastener when vibrating under external force, and is beneficial for tightening the stud through the elastic force of the spring, improving the fastening performance after installation. Description of the Drawings

[0020] Figure 1 Schematic diagram of the overall structure proposed by the present invention; Figure 2 Schematic diagram of the threaded hole structure proposed by the present invention; Figure 3 Schematic diagram of the connection block structure proposed by the present invention; Figure 4 Schematic diagram of the toothed plate structure proposed by the present invention; Figure 5 is Figure 4 Enlarged view at position A in Figure 6 Schematic diagram of the fixing block structure proposed by the present invention; Figure 7 Schematic diagram of the limiting ring structure proposed by the present invention; Figure 8 Schematic diagram of the buffer block structure proposed by the present invention.

[0021] Legend: 1, workpiece; 2, threaded hole; 3, fastening seat; 4, through hole; 5, stud; 6, connection block; 7, knob; 8, toothed ring; 9, connection groove; 10, installation groove; 11, threaded rod; 12, moving block; 13, connecting rod; 14, toothed plate; 15, driven bevel gear; 16, driving bevel gear; 17, shaft rod; 18, turning knob; 19, fixing block; 20, screw; 21, cross slot; 22, threaded groove; 23, installation hole; 24, limiting ring; 25, spring; 26, buffer block. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] As shown in the Figure 1-8 accompanying drawings, an embodiment provided by the present invention: an interlocking and meshing type anti-loosening fastener structure, including a fastening seat 3, a workpiece 1 is fixedly connected below the fastening seat 3, a threaded hole 2 is opened on the upper surface of the workpiece 1, a through hole 4 is opened in the middle of the fastening seat 3, a stud 5 is threadedly connected inside the threaded hole 2, an anti-loosening assembly is arranged on the upper surface of the stud 5, the fastening seat 3 is used for installing the fastener to improve the fastening property of the fastener connection, the threaded hole 2 is used for fastener connection with the stud 5, the thread of the threaded hole 2 matches the thread of the stud 5, and the through hole 4 facilitates the penetration of the stud 5; The anti-loosening component includes a connecting block 6. An external gear ring 8 is fixedly connected to the connecting block 6. A knob 7 is fixedly connected to the upper surface of the connecting block 6. A connecting groove 9 is opened on one side of the through hole 4. An installation groove 10 is opened on one side of the connecting groove 9. The thick gear ring 8 utilizes the gaps between the teeth to facilitate meshing and connection with the teeth in the toothed plate 14. When the position of the toothed plate 14 is limited by the threaded rod 11, interlocking is achieved. A groove is provided in the middle of the connecting block 6 for accommodating the gear ring 8. The knob 7 facilitates the rotation of the stud 5 by turning the connecting block 6. The connecting groove 9 provides a moving space for the toothed plate 14, so that after the stud 5 is screwed into the threaded hole 2, the toothed plate 14 is in close contact with the gear ring 8 to limit and lock the gear ring 8. Thus, under the connection of the connecting block 6, the stud 5 is limited and locked. While installing the threaded rod 11, the installation groove 10 facilitates the limiting and stabilizing effect on the sliding moving block 12.

[0024] As shown in the Figure 5 attachment, a threaded rod 11 is rotatably connected inside the installation groove 10. A moving block 12 is threadedly connected to the outside of the threaded rod 11. The moving block 12 is slidably connected inside the installation groove 10. The threaded rod 11 facilitates driving the moving block 12 to move forward or backward under the action of the thread. Thus, under the action of the connecting rod 13, the toothed plate 14 is driven to move and approach one side of the gear ring 8.

[0025] As shown in the Figure 4 attachment, two connecting rods 13 are fixedly connected to one side of the moving block 12. One end of the two connecting rods 13 is fixedly connected to a toothed plate 14. During the process of the moving block 12 being driven by the threaded rod 11 to move, through the connection of the connecting rod 13, it is convenient to drive the toothed plate 14 to move, enabling the toothed plate 14 to move forward and backward. The toothed plate 14 facilitates meshing with the tooth grooves of the gear ring 8 through the teeth, thus playing an interlocking role.

[0026] As shown in the Figure 5 attachment, a locking component is provided at one end of the threaded rod 11. The locking component includes a driven bevel gear 15. The driven bevel gear 15 is fixedly connected to one end of the threaded rod 11. A driving bevel gear 16 is rotatably connected to the inner wall of the installation groove 10. The driving bevel gear 16 is in meshing connection with the driven bevel gear 15. A shaft rod 17 is fixedly connected to the middle of the driving bevel gear 16. The connection between the driven bevel gear 15 and the driving bevel gear 16 is beneficial for more conveniently turning the knob 18. Under the connection of the shaft rod 17, the threaded rod 11 is driven to rotate.

[0027] As shown in the Figure 6As shown, one end of the shaft rod 17 is fixedly connected with a rotary knob 18. One side of the rotary knob 18 is fixedly connected with a fixing block 19. A screw 20 penetrates through the inside of the fixing block 19. A cross groove 21 is formed on the upper surface of the screw 20. The rotary knob 18 is convenient for indirectly driving the threaded rod 11 to rotate, the fixing block 19 is convenient for installing the screw 20, and the cross groove 21 is convenient for using a tool to cooperate with the tool to twist the screw 20.

[0028] As shown in the appendix Figure 7 As shown, a plurality of threaded grooves 22 are formed on the upper surface of the fastening seat 3. The plurality of threaded grooves 22 are annularly distributed. The threaded grooves 22 are convenient for the screw 20 to be flexibly screwed into the inside of the threaded grooves 22 when the screw 20 revolves in different directions. Under the connection of the fixing block 19, the rotated rotary knob 18 is fixed.

[0029] As shown in the appendix Figure 8 As shown, a buffer assembly is arranged on the upper surface of the fastening seat 3. The buffer assembly includes a plurality of mounting holes 23. The plurality of mounting holes 23 are formed on the upper surface of the fastening seat 3. A limiting ring 24 is fixedly connected to the upper surface of the mounting hole 23. A spring 25 is fixedly connected to the inside of the mounting hole 23. One end of the spring 25 is fixedly connected with a buffer block 26. The buffer block 26 is slidably connected to the inside of the mounting hole 23. The plurality of mounting holes 23 are symmetrically distributed, and the outside of the buffer block 26 slides inside the limiting ring 24. The mounting hole 23 is convenient for installing the spring 25, and the limiting ring 24 helps to prevent the buffer block 26 inside the mounting hole 23 from sliding out of the inside of the mounting hole 23, playing a limiting role. The spring 25 plays an elastic pushing role on the buffer block 26, so that the buffer block 26 plays a buffering role.

[0030] Working principle: When in use, first, a threaded hole 2 matching the stud 5 is formed on the surface of the workpiece 1 to be installed with a fastener. Then, the fastening seat 3 is fixed on the surface of the workpiece 1. Then, under the screwing of the knob 7, the stud 5 is threadedly connected into the inside of the threaded hole 2 through the through hole 4. When the stud 5 is tightened under the action of the knob 7, the rotary knob 18 is screwed. Through the connection of the shaft rod 17, the driving bevel gear 16 is driven to rotate, and the driving bevel gear 16 drives the driven bevel gear 15 to rotate, so that the driven bevel gear 15 drives the threaded rod 11 to rotate. During the process that the threaded rod 11 drives the moving block 12 to slide inside the installation groove 10, the toothed plate 14 is driven to approach the toothed ring 8. When the toothed plate 14 meshes with the toothed ring 8, an interlocking effect is generated with the toothed ring 8. At this time, a limiting effect is exerted on the connecting block 6, so as to exert a limiting effect on the stud 5; After the rotary knob 18 is screwed, using a tool, with the assistance of the cross groove 21, the screw 20 is penetrated through the fixing block 19 and screwed into the corresponding threaded groove 22. After the screw 20 is tightened, the rotary knob 18 is limited and locked under the connection of the fixing block 19, enhancing the locking effect of the anti-loosening assembly; After the stud 5 is screwed into the threaded hole 2, the lower surface of the knob 7 will contact the upper surface of the fastening seat 3. At this time, the lower surface of the knob 7 will contact multiple buffer blocks 26, generating pressure on the buffer blocks 26. Under the action of the elastic force generated by the spring 25 under pressure, the elastic force pushes the buffer blocks 26, so that the buffer blocks 26 push the contacted knob 7, and the knob 7 will generate an upward thrust, thereby generating an upward thrust on the stud 5. Under the action of the thread, the stud 5 will not fall out of the threaded hole 2. On the contrary, it will tighten the stud 5 inside the threaded hole 2, thereby improving the tightness of the connection between the stud 5 and the threaded hole 2.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. The structure of an interlocking and meshing type anti-loosening fastener, including a fastening seat (3), is characterized in that: A workpiece (1) is fixedly connected below the fastening seat (3). A threaded hole (2) is provided on the upper surface of the workpiece (1). A through hole (4) is provided in the middle of the fastening seat (3). A stud (5) is threadedly connected inside the threaded hole (2). A loosening prevention component is arranged on the upper surface of the stud (5). The loosening prevention component includes a connection block (6). A gear ring (8) is fixedly connected to the outside of the connection block (6). A knob (7) is fixedly connected to the upper surface of the connection block (6). A connection groove (9) is provided on one side of the through hole (4). An installation groove (10) is provided on one side of the connection groove (9).

2. The interlocking and meshing anti-loosening fastener structure according to claim 1, characterized in that: A threaded rod (11) is rotatably connected inside the installation groove (10). A moving block (12) is threadedly connected to the outside of the threaded rod (11). The moving block (12) is slidably connected inside the installation groove (10).

3. The interlocking and meshing anti-loosening fastener structure according to claim 2, wherein: Two connecting rods (13) are fixedly connected to one side of the moving block (12). One end of the two connecting rods (13) is fixedly connected to a toothed plate (14).

4. The interlocking and meshing type anti-loosening fastener structure according to claim 2, wherein: A locking component is arranged at one end of the threaded rod (11). The locking component includes a driven bevel gear (15). The driven bevel gear (15) is fixedly connected to one end of the threaded rod (11). A driving bevel gear (16) is rotatably connected to the inner wall of the installation groove (10). The driving bevel gear (16) is meshed with the driven bevel gear (15).

5. The interlocking and meshing anti-loosening fastener structure according to claim 4, characterized in that: A shaft rod (17) is fixedly connected to the middle of the driving bevel gear (16). A turning knob (18) is fixedly connected to one end of the shaft rod (17).

6. The interlocking and meshing anti-loosening fastener structure according to claim 5, wherein: A fixing block (19) is fixedly connected to one side of the turning knob (18). A screw (20) penetrates through the fixing block (19).

7. The interlocking and meshing type anti-loosening fastener structure according to claim 6, characterized in that: A cross slot (21) is provided on the upper surface of the screw (20). A plurality of threaded grooves (22) are provided on the upper surface of the fastening seat (3). The plurality of threaded grooves (22) are annularly distributed.

8. The interlocking and meshing type anti-loosening fastener structure according to claim 1, wherein: A buffer component is arranged on the upper surface of the fastening seat (3). The buffer component includes a plurality of installation holes (23). The plurality of installation holes (23) are provided on the upper surface of the fastening seat (3). A limiting ring (24) is fixedly connected to the upper surface of the installation hole (23).

9. The interlocking and meshing anti-loosening fastener structure according to claim 8, wherein: A spring (25) is fixedly connected inside the installation hole (23). One end of the spring (25) is fixedly connected to a buffer block (26). The buffer block (26) is slidably connected inside the installation hole (23). The plurality of installation holes (23) are symmetrically distributed.

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