Check bolt with C-shaped notch

Abstract

The invention discloses a lock bolt with a C-shaped notch, belongs to the technical field of bolts, and aims to solve the problems that in the prior art, due to the fact that friction force between threads is gradually reduced or disappears, the looseness phenomenon is easily caused, serious safety accidents are caused, and the long-term stable fastening connection requirement is difficult to meet. Through a multi-cooperative anti-loosening structure, the stability and reliability of bolt connection are further improved, in the anti-loosening assembly, through the inclined matching design of a first abutting plate and a first containing groove, transverse thrust can be generated when a mounting plate is knocked, so that a second abutting plate tightly abuts against the outer wall of a nut, rigid limiting is formed, and the anti-loosening effect is improved. A linkage mechanism of the limiting assembly and the locking assembly further strengthens the anti-loosening effect, a first limiting block is extruded when a conical block moves downwards, automatic locking of the conical block is achieved through reset elastic force of a first spring, then a limiting plate is fixed, and it is ensured that the nut is continuously limited by the anti-loosening assembly through longitudinal constraint of the limiting plate on a mounting plate; upward loosening caused by external force impact is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of bolts, in particular to a C-shaped notch anti-loosening bolt. Background Art

[0002] A bolt is a type of fastener consisting of a head and a cylinder with external threads. It needs to be used in conjunction with a nut. The nut is a part with a threaded through hole on the inner wall, which can be threadedly connected to the outer wall of the screw through the thread. When the nut is turned, the thread causes the nut to move spirally, thereby gradually shortening the distance between the nut and the bolt cap. It is usually used to fasten two parts with through holes.

[0003] However, in actual applications, existing bolts are prone to loosening due to the gradual decrease or disappearance of friction between the threads. This loosening not only leads to a decrease in the tightness of the connection parts and affects the normal operation accuracy of the equipment, but may also cause safety hazards such as equipment failure and component damage, thereby causing serious safety accidents, making it difficult to meet the long-term and stable fastening connection requirements.

[0004] Therefore, in order to solve such problems, we propose a C-shaped notch anti-loosening bolt. Summary of the Invention

[0005] The purpose of the present invention is to provide a C-notch anti-loosening bolt, which aims to solve the problem in the above-mentioned background technology that loosening occurs easily due to the gradual reduction or disappearance of the friction between the threads, causing serious safety accidents and making it difficult to meet the long-term stable fastening connection requirements.

[0006] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a C-shaped notch anti-loosening bolt, comprising a bolt body: a nut is threadedly connected to the side wall of the upper end of the bolt body, a first placement groove is provided on the side wall of the upper end of the bolt body, an anti-loosening component is provided inside the first placement groove, a second placement groove is provided on the inner wall of the upper end of the first placement groove, a limiting component is provided inside the second placement groove, a third through hole is provided on the top wall of the second placement groove, a locking component is provided inside the third through hole, a fourth through hole is provided on the upper end of the bolt body, the fourth through holes are respectively located on both sides of the third through hole, a connecting component connected by the locking component is provided on the upper end of the bolt body, and a fixing component is provided on the upper end of the bolt body;

[0007] The anti-loosening component includes a first abutting plate abutting against the inner wall of the first placement groove, a second abutting plate is fixedly connected to the side wall of the first abutting plate, and a mounting plate is fixedly connected to the upper end of the first abutting plate.

[0008] Preferably, the limit assembly includes a limit plate movably connected to the inner wall of the second placement groove, the upper surface of one end of the limit plate is provided with a first through hole, the inner wall of the first through hole is evenly provided with two first mounting grooves, the top wall of the first mounting groove is provided with a second through hole, the inner wall of the first mounting groove is fixedly connected with a first spring, and one end of the first spring is fixedly connected to the first limit block, the locking assembly includes a locking column, the lower end of the locking column is fixedly connected with a vertebral block, the side wall of the locking column is provided with a second mounting groove, the inner wall of the second mounting groove is movably sleeved with a connecting ring, the lower end of the connecting ring is fixedly connected to the second spring, the lower end of the second spring is fixedly connected to the inner bottom wall of the second mounting groove, and the outer side wall of the connecting ring is fixedly connected with a cone cylinder.

[0009] Preferably, the fixing assembly includes a fixing frame, the inner side wall of the fixing frame is provided with a card slot, the inner top wall of the fixing frame is provided with a cross-shaped groove, the lower ends of the two non-adjacent inner walls of the cross-shaped groove are respectively fixedly connected with a block, and the inner top wall of the fixing frame is fixedly connected with two limit columns, the limit columns are respectively located on both sides of the cross-shaped groove, and the limit columns are engaged with the fourth through hole.

[0010] Preferably, the connecting assembly includes a third mounting groove, a third spring is fixedly connected to the bottom wall of the third mounting groove, the upper end of the third spring is fixedly connected to a connecting column, and the upper end of the connecting column is fixedly connected to a connecting plate.

[0011] Preferably, the side wall of the first abutting plate away from the second abutting plate is inclined, and the side wall of the second abutting plate away from the first abutting plate is vertical.

[0012] Preferably, two engaging grooves are evenly arranged on the upper end of the bolt body, and two second limiting blocks are fixedly connected to the top wall of the fixing frame. The second limiting blocks are respectively located on both sides of the cross groove, and the second limiting blocks are engaged with the engaging grooves.

[0013] Preferably, the end of the first limiting block away from the first spring is arc-shaped, and the first limiting block and the second placement groove are both T-shaped.

[0014] Preferably, two second extension grooves are formed on the inner bottom wall of the second placement groove, and the second extension grooves are respectively located directly below the fourth through holes.

[0015] Preferably, a first extension groove is formed on the inner bottom wall of the second placement groove, and the first extension groove is located directly below the third through hole.

[0016] Preferably, the lower end of the first abutting plate is provided with an inclined surface, and the inner wall of the first placement groove is inclined.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The C-notch anti-loosening bolt proposed by the present invention further improves the stability and reliability of the bolt connection through multiple collaborative anti-loosening structures. In the anti-loosening component, the inclined matching design of the first abutment plate and the first placement groove can generate a lateral thrust when knocking the mounting plate, so that the second abutment plate can tightly press against the outer wall of the nut to form a rigid limit, thereby preventing the nut from loosening due to vibration or attenuation of thread friction from the source. The linkage mechanism of the limit assembly and the locking assembly further enhances the anti-loosening effect. When the vertebral block moves downward, the first limit block is squeezed, and the reset elastic force of the first spring is used to automatically lock the vertebral block, and then fix the limit plate. The longitudinal constraint of the mounting plate by the limit plate ensures that the anti-loosening component continuously limits the nut to prevent it from loosening upward due to external force impact. This layered defense design breaks through the single anti-loosening mode of traditional bolts that only relies on thread friction. Even under long-term and complex working conditions, it can still maintain a stable tightening effect, effectively reducing the risk of equipment failure caused by bolt loosening.

[0019] 2. The present invention proposes a C-notch anti-loosening bolt. The design of the fixing component provides closed-loop protection for the overall structure, further improving the safety and durability of the anti-loosening system. The fixing frame realizes dual positioning of the limit plate and itself through the engagement of the card slot with the bolt body and the through-connection of the limit column with the fourth through hole and the second through hole, which not only prevents the lateral displacement of the limit plate, but also avoids accidental rotation of the fixing frame, greatly enhancing the integrity of the structure. The cooperation between the second limit block and the engagement slot not only shares the stress on the limit column and reduces the deformation of the components, but also improves the vibration resistance through multiple engagement relationships. In the connecting assembly, the continuous elastic force of the third spring makes the connecting plate and the block tightly abut against each other, forming a longitudinal lock, making the connection between the fixing frame and the bolt body more firm, so that the anti-loosening bolt can adapt to various harsh working environments and meet long-term stable fastening requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0021] Figure 2 Schematic diagram of the explosion structure of the limiting component in the present invention;

[0022] Figure 3 Schematic diagram of the explosion structure of the locking assembly in the present invention;

[0023] Figure 4 Schematic diagram of the anti-loosening component in the present invention;

[0024] Figure 5 This is a front view of the anti-loosening assembly of the present invention;

[0025] Figure 6 It is a partial three-dimensional schematic diagram of the bolt body in the present invention;

[0026] Figure 7 is a cross-sectional view of the bolt body in the present invention;

[0027] Figure 8 A three-dimensional diagram of the fixing assembly in the present invention Figure 1 ;

[0028] Figure 9 A three-dimensional diagram of the fixing assembly in the present invention Figure 2 .

[0029] Legend:

[0030] 1. Bolt body; 11. Nut; 12. First placement slot; 13. Second placement slot; 14. Third through hole; 141. First extension slot; 15. Fourth through hole; 151. Second extension slot; 16. Engaging slot; 2. Anti-loosening assembly; 21. First abutment plate; 22. Second abutment plate; 23. Mounting plate; 3. Limiting assembly; 31. Limiting plate; 32. First through hole; 33. First mounting slot; 34. Second through hole; 35. First spring; 36. First limit Position block; 37, locking assembly; 371, locking column; 372, vertebral block; 373, second mounting groove; 374, connecting ring; 375, second spring; 376, cone; 38, connecting assembly; 381, third mounting groove; 382, ​​third spring; 383, connecting column; 384, connecting plate; 39, fixing assembly; 391, fixing frame; 392, slot; 393, cross groove; 394, stop block; 395, limiting column; 396, second limiting block. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] In order to solve the problem that the friction between threads gradually decreases or disappears, which may cause loosening and serious safety accidents, and it is difficult to meet the long-term stable fastening connection requirements, please refer to Figure 1 - Figure 9 , provide the following preferred technical solutions.

[0033] An embodiment of the present invention provides: a C-shaped notch anti-loosening bolt, comprising a bolt body 1: a nut 11 is threadedly connected to the side wall of the upper end of the bolt body 1, a first placement groove 12 is opened on the side wall of the upper end of the bolt body 1, an anti-loosening component 2 is arranged inside the first placement groove 12, a second placement groove 13 is opened on the inner wall of the upper end of the first placement groove 12, a limiting component 3 is arranged inside the second placement groove 13, a third through hole 14 is opened on the inner top wall of the second placement groove 13, a locking component 37 is arranged inside the third through hole 14, a fourth through hole 15 is opened on the upper end of the bolt body 1, the fourth through holes 15 are respectively located on both sides of the third through hole 14, a connecting component 38 connected by the locking component 37 is provided on the upper end of the bolt body 1, and a fixing component 39 is provided on the upper end of the bolt body 1;

[0034] The anti-loosening assembly 2 includes a first abutting plate 21 abutting against the inner wall of the first placement groove 12 , a second abutting plate 22 is fixedly connected to the side wall of the first abutting plate 21 , and a mounting plate 23 is fixedly connected to the upper end of the first abutting plate 21 .

[0035] The shape of the first placement groove 12 can be C-shaped, V-shaped, U-shaped, etc., and the corresponding side wall of the first abutting plate 21 can also be C-shaped, V-shaped, U-shaped, etc.

[0036] Specifically, during actual installation, the nut 11 needs to be aligned with the thread structure at the upper end of the bolt body 1, and the nut 11 needs to be rotated to form a stable threaded connection with the bolt body 1 until the nut 11 is tightly fitted into the surface of the component to be fastened, completing the basic fastening operation. Subsequently, the anti-loosening component 2 is accurately placed in the first placement groove 12 preset on the side wall of the bolt body 1, ensuring that the first abutment plate 21 in the anti-loosening component 2 fits the inner wall of the first placement groove 12. At this time, the operator needs to use a hammer or other tool to evenly knock the mounting plate 23 at the top of the anti-loosening component 2. As the mounting plate 23 is subjected to the downward impact force, the first abutment plate 21 and the second abutment plate 2 fixedly connected thereto are engaged. 2 will move downward synchronously along the inner wall of the first placement groove 12. Since the side wall of the first abutting plate 21 away from the second abutting plate 22 is inclined, and the inner wall of the first placement groove 12 is also inclined, under the cooperation of the two, a lateral thrust will be generated during the downward movement of the first abutting plate 21, prompting the second abutting plate 22 to gradually approach the direction of the nut 11, and finally the second abutting plate 22 away from the vertical side wall of the first abutting plate 21 will be firmly pressed against the outer wall of the nut 11. This pressing structure can effectively limit the rotation tendency of the nut 11 and prevent it from loosening through the rigid limitation of the nut 11 by the second abutting plate 22, thereby ensuring the long-term stability of the bolt connection.

[0037] The limiting assembly 3 includes a limiting plate 31 movably connected to the inner wall of the second placement groove 13, a first through hole 32 is provided on the upper surface of one end of the limiting plate 31, two first mounting grooves 33 are evenly provided on the inner wall of the first through hole 32, a second through hole 34 is provided on the inner top wall of the first mounting groove 33, a first spring 35 is fixedly connected to the inner wall of the first mounting groove 33, and one end of the first spring 35 is fixedly connected to the first limiting block 36, a locking assembly 37 includes a locking column 371, a vertebral block 372 is fixedly connected to the lower end of the locking column 371, a second mounting groove 373 is provided on the side wall of the locking column 371, a connecting ring 374 is movably sleeved on the inner wall of the second mounting groove 373, a second spring 375 is fixedly connected to the lower end of the connecting ring 374, the lower end of the second spring 375 is fixedly connected to the inner bottom wall of the second mounting groove 373, and a cone 376 is fixedly connected to the outer wall of the connecting ring 374.

[0038] The connecting assembly 38 includes a third mounting groove 381, the inner bottom wall of the third mounting groove 381 is fixedly connected to a third spring 382, ​​the upper end of the third spring 382 is fixedly connected to a connecting column 383, the upper end of the connecting column 383 is fixedly connected to a connecting plate 384, and the third mounting groove 381 is opened at the end of the locking column 371 away from the vertebral block 372.

[0039] When the nut 11 is initially restricted by the anti-loosening assembly 2, the fixing effect needs to be further strengthened through the coordinated action of the connecting assembly 38, the locking assembly 37 and the limiting assembly 3. During the specific operation, the operator needs to press the connecting plate 384 in the connecting assembly 38 downward. At this time, the connecting plate 384 will drive the connecting post 383 to move downward along the inner wall of the third mounting groove 381 and compress the third spring 382. As the connecting post 383 moves downward, its lower end will push the locking post 371 in the locking assembly 37 to move downward along the third through hole 14 and the first through hole 32, and the vertebral block 372 fixedly connected to the lower end of the locking post 371 will move downward synchronously. During the downward movement of the vertebral block 372, its inclined side wall will contact the arc end of the first limiting block 36 in the limiting assembly 3 and gradually squeeze the first limiting block 36. Under the influence of this pressure, the first limiting block 36 will shrink toward the inside of the first mounting groove 33 and compress When the first stop block 372 is released, the first stop block 371 is locked, and the locking post 371 is prevented from returning to the original position by the locking post 371.

[0040] The fixing assembly 39 includes a fixing frame 391, the inner wall of the fixing frame 391 is provided with a card slot 392, the inner top wall of the fixing frame 391 is provided with a cross-shaped groove 393, the lower ends of the two non-adjacent inner walls of the cross-shaped groove 393 are respectively fixedly connected with a stop block 394, and the inner top wall of the fixing frame 391 is fixedly connected with two limit columns 395, the limit columns 395 are respectively located on both sides of the cross-shaped groove 393, and the limit columns 395 are engaged with the fourth through hole 15.

[0041] The locking member 391 is then released so that the locking member 392 is engaged with the side wall of the bolt body 1. This double engagement design not only strictly limits the position of the limiting plate 31 and prevents it from lateral displacement under vibration or other working conditions, but also ensures that the fixing frame 391 is in a state of being accurately locked. When the third spring 382 is pulled out of the locking cam 384, the locking cam 383 is locked and the locking cam 384 is in a state of being locked.

[0042] Furthermore, in order to enhance the stability of the device, e.g. Figure 7 - Figure 9 As shown, the following preferred technical solutions are provided.

[0043] The side wall of the first abutting plate 21 away from the second abutting plate 22 is inclined, and the side wall of the second abutting plate 22 away from the first abutting plate 21 is vertical.

[0044] Two engaging grooves 16 are evenly provided on the upper end of the bolt body 1, and two second limit blocks 396 are fixedly connected to the inner top wall of the fixed frame 391. The second limit blocks 396 are respectively located on both sides of the cross groove 393. The second limit blocks 396 are engaged with the engaging grooves 16 to limit the position of the fixed frame 391 by utilizing the engagement connection between the second limit blocks 396 and the engaging grooves 16 to prevent the fixed frame 391 from rotating, while sharing the force on the limiting column 395 to reduce deformation.

[0045] The end of the first limit block 36 away from the first spring 35 is arc-shaped, and the first limit block 36 and the second placement groove 13 are both T-shaped, which is used to press downward to realize the vertebral block 372 to push the first limit block 36 to slide on the inner wall of the second placement groove 13. Secondly, the T-shaped first limit block 36 and the second placement groove 13 are used to limit each other to prevent the first limit block 36 from separating from the second placement groove 13.

[0046] Two second extension grooves 151 are provided on the inner bottom wall of the second placement groove 13. The second extension grooves 151 are respectively located directly below the fourth through hole 15, and are used to realize that the lower end of the limiting column 395 passes through the first limiting block 36 and is engaged with the inner wall of the second extension groove 151, thereby increasing the limiting effect of the limiting column 395 on the limiting plate 31.

[0047] A first extension groove 141 is formed in the inner bottom wall of the second placement groove 13. The first extension groove 141 is located directly below the third through hole 14. When the first limit block 36 is clamped on the vertebral block 372, and then the engagement connection between the first limit block 36 and the vertebral block 372 needs to be released, the locking column 371 is pressed downward, and the locking column 371 drives the vertebral block 372 to move downward, thereby providing space for the movement of the vertebral block 372.

[0048] The lower end of the first abutting plate 21 is provided with an inclined surface, and the inner wall of the first placement groove 12 is inclined to prevent the lower end of the first abutting plate 21 from wearing against the inner wall of the first placement groove 12 when the first abutting plate 21 moves downward.

[0049] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements that are inherent to such process, method, article, or apparatus.

[0050] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A C-shaped notch anti-loosening bolt, comprising a bolt body (1), characterized in that: The side wall of the upper end of the bolt body (1) is threadedly connected with a nut (11), the side wall of the upper end of the bolt body (1) is provided with a first placement groove (12), the first placement groove (12) is provided with an anti-loosening component (2), the inner wall of the upper end of the first placement groove (12) is provided with a second placement groove (13), the second placement groove (13) is provided with a limiting component (3), the inner top wall of the second placement groove (13) is provided with a third through hole (14), the third through hole (14) is provided with a locking component (37), the upper end of the bolt body (1) is provided with a fourth through hole (15), the fourth through hole (15) is respectively located on both sides of the third through hole (14), the upper end of the bolt body (1) is provided with a connecting component (38) connected by the locking component (37), and the upper end of the bolt body (1) is provided with a fixing component (39); The anti-loosening assembly (2) comprises a first abutting plate (21) abutting against the inner wall of the first placement groove (12); a second abutting plate (22) is fixedly connected to the side wall of the first abutting plate (21); and a mounting plate (23) is fixedly connected to the upper end of the first abutting plate (21).

2. The C-shaped notch anti-loosening bolt according to claim 1, characterized in that: The limiting assembly (3) includes a limiting plate (31) movably connected to the inner wall of the second placement groove (13), a first through hole (32) is provided on the upper surface of one end of the limiting plate (31), two first installation grooves (33) are evenly provided on the inner wall of the first through hole (32), a second through hole (34) is provided on the top wall of the first installation groove (33), a first spring (35) is fixedly connected to the inner wall of the first installation groove (33), and a first limiting block (36) is fixedly connected to one end of the first spring (35), and the locking assembly (37) includes a locking column (371), the lower end of the locking column (371) is fixedly connected to a vertebral block (372), the side wall of the locking column (371) is provided with a second mounting groove (373), the inner wall of the second mounting groove (373) is movably sleeved with a connecting ring (374), the lower end of the connecting ring (374) is fixedly connected to a second spring (375), the lower end of the second spring (375) is fixedly connected to the inner bottom wall of the second mounting groove (373), and the outer side wall of the connecting ring (374) is fixedly connected to a cone (376).

3. The C-shaped notch anti-loosening bolt according to claim 1, characterized in that: The fixing assembly (39) comprises a fixing frame (391), an inner side wall of the fixing frame (391) is provided with a slot (392), an inner top wall of the fixing frame (391) is provided with a cross-shaped slot (393), the lower ends of two non-adjacent inner walls of the cross-shaped slot (393) are respectively fixedly connected with a stopper (394), and the inner top wall of the fixing frame (391) is fixedly connected with two limiting columns (395), the limiting columns (395) are respectively located on both sides of the cross-shaped slot (393), and the limiting columns (395) are engaged with the fourth through hole (15).

4. The C-shaped notch anti-loosening bolt according to claim 1, characterized in that: The connecting assembly (38) includes a third mounting groove (381), a third spring (382) is fixedly connected to the inner bottom wall of the third mounting groove (381), an upper end of the third spring (382) is fixedly connected to a connecting column (383), and an upper end of the connecting column (383) is fixedly connected to a connecting plate (384).

5. The C-shaped notch anti-loosening bolt according to claim 1, characterized in that: The side wall of the first abutting plate (21) away from the second abutting plate (22) is inclined, and the side wall of the second abutting plate (22) away from the first abutting plate (21) is vertical.

6. The C-shaped notch anti-loosening bolt according to claim 3, characterized in that: Two engaging grooves (16) are evenly arranged on the upper end of the bolt body (1), and two second limiting blocks (396) are fixedly connected to the top wall of the fixing frame (391). The second limiting blocks (396) are respectively located on both sides of the cross-shaped groove (393), and the second limiting blocks (396) are engaged with the engaging grooves (16).

7. The C-shaped notch anti-loosening bolt according to claim 2, characterized in that: The end of the first limiting block (36) away from the first spring (35) is arc-shaped, and the first limiting block (36) and the second placement groove (13) are both T-shaped.

8. The C-shaped notch anti-loosening bolt according to claim 1, characterized in that: Two second extension grooves (151) are formed on the inner bottom wall of the second placement groove (13), and the second extension grooves (151) are respectively located directly below the fourth through holes (15).

9. The C-shaped notch anti-loosening bolt according to claim 1, characterized in that: A first extension groove (141) is provided on the inner bottom wall of the second placement groove (13), and the first extension groove (141) is located directly below the third through hole (14).

10. The C-shaped notch anti-loosening bolt according to claim 1, characterized in that: The lower end of the first abutting plate (21) is provided with an inclined surface, and the inner wall of the first placement groove (12) is inclined.

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