Anti-drop fastener

Abstract

The present application relates to the field of fastener, specifically discloses a anti-falling fastener, including fixed bolt head, fixed bolt body and fixed nut, the outer surface of fixed bolt body is connected with fixed nut, the first positive thread bottom is equipped with limit block, the top of fixed nut is equipped with washer, washer is limited by protruding block, fixed nut and washer are connected through locking structure. In the present application, fixed nut is limited by limit block and washer, and fixed nut is fixed by washer, which prevents it from rotating, fixed nut is connected on the outer surface of fixed bolt body through reverse thread, the first clamping plate and the second clamping plate fix the fixed nut, which prevents it from rotating, the sealing effect of connecting block and sealing ring, multiple location fixing, which realizes the anti-falling effect of fixed nut, can isolate the influence of water vapor in the air, prevent corrosion of fastener, improve the strength of fastener, and has good anti-shock effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fasteners, in particular to a fall-preventing fastener. BACKGROUND

[0002] Fasteners are widely used in various industries, including energy, electronics, electrical appliances, machinery, chemical industry, metallurgy, mold, hydraulic industry, etc. They can be found in various mechanical devices, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemical industry, instruments and products, etc. Bolts are widely used as a type of fastener. Existing fasteners are usually used to fix large equipment by screwing the equipment through threads. However, the existing bolts are not strong enough and are easily damaged during use.

[0003] For example, the new compressor high-strength fastener (CN214036442U) solves the problem of poor strength of traditional compressor fasteners by using a bolt body, a top head, a screw rod, a nut, a base material layer, an alloy layer, an intermediate layer, and a protective layer. The compact structure of the fastener can effectively improve safety and performance, prevent it from falling off during vibration, increase connection strength, and prolong service life.

[0004] Although the above-mentioned patent technology solves the problem of fastener strength, the existing fastener cannot effectively solve the problem of fastener falling off. When the machine runs for a long time, the nut may become loose due to vibration, causing the bolt to fall off and affecting the use of the entire machine part. In addition, the fastener is exposed to the air for a long time, which may be affected by the moisture in the air, causing corrosion and reducing the strength of the fastener.

[0005] Therefore, we propose a fall-preventing fastener to solve the above problems. SUMMARY

[0006] The purpose of the present application is to provide a fall-preventing fastener to solve the problem of existing fasteners that cannot effectively solve the problem of fastener falling off. When the machine runs for a long time, the nut may become loose due to vibration, causing the bolt to fall off and affecting the use of the entire machine part. In addition, the fastener is exposed to the air for a long time, which may be affected by the moisture in the air, causing corrosion and reducing the strength of the fastener.

[0007] To achieve the above object, the present application provides the following technical solutions: the anti-falling fastener, including fixed bolt head, fixed bolt body and fixed nut, the fixed bolt body outer surface is equipped with the first positive thread, the first positive thread outer surface is connected with fixed nut through thread, the first positive thread bottom is equipped with limit block, the limit block is fixedly connected on the fixed bolt body outer surface, the limit block is made of elastic and easily deformable material;

[0008] The fixed nut top is equipped with washer, the washer inner wall is fixedly connected with protruding block, the fixed bolt body outer surface is equipped with fixed slot, the protruding block is matched with fixed slot, the fixed nut inside is equipped with multiple locking structures, the fixed nut and washer are connected through locking structure;

[0009] The fixed bolt body outer surface bottom is equipped with reverse thread, the reverse thread outer surface is connected with fastening nut through thread, the fixed nut is matched with reverse thread, the fixed bolt body outer surface is equipped with second limit slot, the second limit slot inside is clamped with clamping block, the fastening bolt top is equipped with first clamping plate, the first clamping plate is connected with clamping block, the first clamping plate bottom is fixedly connected with connecting plate, the connecting plate one side is up and down slidingly connected with second clamping plate, the first clamping plate and second clamping plate are fixedly connected through fixed structure.

[0010] Through the above technical solutions, when some large equipment is fixed, the fixed bolt body is passed through the installation hole inside the equipment to be fixed, then the protruding block is matched with the fixed slot, the washer is passed through the fixed bolt body, and the washer is passed through the limit block, then the fixed nut is sleeved on the outer surface of the fixed bolt body, the fixed nut is sequentially passed through the reverse thread and the limit block, and finally is connected with the first positive thread through thread, since the limit block is made of elastic and easily deformable material, the washer and the fixed nut can be passed through by deformation, the limit block limits the fixed nut, prevents the fixed nut from falling off, meanwhile, the influence of external moisture is isolated, the corrosion of the fastener is prevented, the strength of the fastener is improved, then the washer and the fixed nut are fixedly connected through the locking structure, since the fixed slot limits the protruding block and limits the rotation of the protruding block, the rotation of the fixed nut is limited, the fixed nut is prevented from falling off again, then the fastening nut is sleeved on the outer surface of the fixed bolt body, the fixed nut is connected with the reverse thread through thread, then the clamping block is placed in the second limit slot, the first clamping plate is on the top of the fastening nut, and the second clamping plate is on the bottom of the fastening nut, then the fastening nut is tightened again, the clamping block is fixed in the second limit slot, then the first clamping plate and the second clamping plate are connected with the fastening nut through the fixed structure, the second clamping plate moves up during the fixing process, the first clamping plate and the second clamping plate better fix the fastening nut, since the second limit slot limits the clamping block and prevents the rotation of the clamping block, the fastening nut is limited, the rotation of the fastening nut is prevented, the anti-falling effect of the fastening nut is improved, and the anti-falling effect of the fixed nut is further improved.

[0011] In further embodiments, the limiting block is provided with a second external thread on the outer surface thereof, and the second external thread is threadedly connected with the fixing nut.

[0012] Through the above technical solution, by setting the cross-sectional shape of the limiting block as a triangle, the fixing nut can be better limited to prevent the fixing nut from falling off, and the second external thread is provided on the outer surface of the limiting block to facilitate the tightening of the fixing nut.

[0013] In further embodiments, a connecting block is provided between the limiting block and the reverse thread, the connecting block is made of an elastic and deformable material, the cross-sectional shape of the connecting block is provided as a triangle, and the height of the connecting block is longer than the height of the fixing nut.

[0014] Through the above technical solution, by providing the connecting block, on the one hand, the effect of limiting the fixing nut is achieved to prevent the fixing nut from falling off, and on the other hand, the connecting block can serve as a buffer part between the reverse thread and the first external thread of the fixing nut, and the friction force is increased.

[0015] In further embodiments, the locking structure comprises a limiting rod, a through slot is formed in the top of the fixing nut, the limiting rod is arranged inside the through slot, a first limiting slot is formed in the bottom of the gasket, the first limiting slot is matched with the through slot, the limiting rod can be inserted into the first limiting slot through the through slot, a limiting plate is rotationally connected to the bottom of the limiting rod, a spring is fixedly connected between the limiting plate and the fixing nut, a first external thread is provided on the outer surface of the limiting rod, a first internal thread is provided on the inner wall of the first limiting slot, and the limiting rod is threadedly connected with the first limiting slot.

[0016] Through the above technical solution, in the original state, the spring supports the limiting plate to make the limiting rod separate from the gasket, and after the fixing nut is fixed, the limiting rod is threadedly connected with the first limiting slot by rotating the limiting rod, so that the gasket is connected with the fixing nut.

[0017] In further embodiments, a rotating block is fixedly connected to the outer surface of the limiting rod, a first buffer pad is fixedly connected to the bottom of the gasket, a plurality of first positioning lines are provided on the outer surface of the gasket, a plurality of second positioning lines are provided on the outer surface of the fixing nut, the first positioning lines correspond in position to the first limiting slot, and the second positioning lines correspond in position to the through slot.

[0018] Through the above technical solution, by providing the rotating block, the limiting rod is facilitated to be rotated, the first buffer pad has a certain deformation force, the first positioning lines can be aligned with the second positioning lines through the deformation of the first buffer pad, the through slot and the first limiting slot are matched by aligning the first positioning lines with the second positioning lines, the first buffer pad can increase the friction force to improve the tightness of the connection between the gasket and the fixing nut.

[0019] In further embodiments, the fixing structure comprises a limiting screw, the fastening nut is provided with a through hole, the first clamping plate and the second clamping plate are each provided with a fixing hole, the limiting screw passes through the fixing hole and is arranged inside the through hole, the limiting screw is threadedly connected with a limiting nut at both ends, and the first clamping plate bottom and the second clamping plate top are each fixedly connected with a second buffer pad.

[0020] Through the above technical scheme, the limiting screw passes through the fixing hole and the through hole and is fixed by the limiting nut, the first clamping plate and the second clamping plate are fixedly connected with the fastening nut, the second buffer pad is arranged, and the connection tightness of the first clamping plate and the second clamping plate to the fastening nut is improved.

[0021] In further embodiments, the head of the fixing bolt is fixedly connected with a first elastic gasket, the top of the washer is fixedly connected with a second elastic gasket, and the bottom of the first elastic gasket and the top of the second elastic gasket are each provided with a deformation groove.

[0022] Through the above technical scheme, the first elastic gasket and the second elastic gasket are arranged, the connection stability of the connected equipment is improved, the anti-seismic capability is improved, the deformation groove is arranged, the friction is increased, the deformation capability is improved, and the connection stability is further improved.

[0023] In further embodiments, the outer surface of the fixing bolt body is fixedly connected with a sealing ring, the bottom of the sealing ring is fixedly connected with a guide ring, the cross section of the guide ring is triangular, and the sealing ring and the guide ring are each made of an elastic material.

[0024] Through the above technical scheme, the sealing ring and the guide ring are arranged, when the fixing bolt body passes through the mounting hole of the equipment to be fixed, the guide ring guides the sealing ring to enter the mounting hole, the sealing ring is in interference fit with the mounting hole, the equipment to be fixed is more tightly connected with the fixing bolt body, and the anti-seismic capability of the fixing bolt body is improved.

[0025] In further embodiments, the bottom of the fixing bolt body is provided with a cap, the bottom of the fastening nut is provided with a connecting ring groove, the inner wall of the connecting ring groove is provided with a second external thread, the inner wall of the cap is provided with a second internal thread, and the cap and the fastening nut are threadedly connected.

[0026] Through the above technical scheme, the cap is arranged inside the connecting ring groove, and the cap and the fastening nut are connected by threads, and the fastening nut is further limited.

[0027] Compared with the prior art, the beneficial effects of the present application are:

[0028] One: the fixed nut is limited, the fixed nut is fixed by the gasket, the fixed nut is prevented from rotating, the fastening nut is connected on the outer surface of the fixed bolt body through the reverse thread, the first clamping plate and the second clamping plate are fixed to the fastening nut, the sealing effect of the connecting block and the sealing ring is prevented, the fixed nut is prevented from falling off, the influence of water vapor in the air is prevented, the corrosion of the fastening part is prevented, the strength of the fastening part is improved, and the anti-seismic effect is good;

[0029] Secondly, the connecting block is arranged, on the one hand, the fixed nut is limited, the fixed nut is prevented from falling off, on the other hand, the connecting block can be used as a buffer part between the fixed nut and the first positive thread, and the friction force is increased;

[0030] Thirdly, the first buffer pad has a certain deformation force, the first buffer pad is deformed, the first positioning line is aligned with the second positioning line, the first positioning line is aligned with the second positioning line, whether the through groove is matched with the first limiting groove is judged, the first buffer pad can increase the friction force, and the connection tightness of the gasket and the fixed nut is improved;

[0031] Fourthly, the second clamping plate is slid up and down on one side of the connecting plate, the fixing effect of the first clamping plate and the second clamping plate on the fastening bolt is improved, the anti-falling effect of the fastening bolt is improved, and the fastening bolt with different thicknesses can be used. DETAILED DESCRIPTION

[0032] Figure 1 It is a schematic diagram of the use state of the application;

[0033] Figure 2 It is a whole structure perspective view of the application;

[0034] Figure 3 It is a sectional view of the application;

[0035] Figure 4 It is a part structure enlarged view in the application Figure 3 A part structure enlarged view in the application

[0036] Figure 5 It is a part structure enlarged view in the application Figure 3 A part structure enlarged view in the application

[0037] Figure 6 It is a part structure enlarged view in the application Figure 3 A part structure enlarged view in the application

[0038] Figure 7 It is a gasket perspective view in the application;

[0039] Figure 8It is the fixed bolt body and sealing ring connection structure schematic diagram in the application;

[0040] Figure 9 It is the fixed nut perspective view in the application;

[0041] Figure 10 It is the fixed nut perspective view in the application;

[0042] Figure 11 It is the first clamping plate and connecting plate connection structure schematic diagram in the application.

[0043] In the figure: 1, fixed bolt head; 2, fixed bolt body; 3, fixed nut; 4, limiting block; 5, washer; 6, protrusion; 7, fixed groove; 8, fastening nut; 9, second limiting groove; 10, clamping block; 11, first clamping plate; 12, connecting plate; 13, second clamping plate; 14, connecting block; 15, limiting rod; 16, through groove; 17, first limiting groove; 18, limiting plate; 19, spring; 20, rotating block; 21, first buffer pad; 22, first positioning line; 23, second positioning line; 24, limiting screw; 25, through hole; 26, fixed hole; 27, limiting nut; 28, second buffer pad; 29, first elastic gasket; 30, second elastic gasket; 31, deformation groove; 32, sealing ring; 33, guide ring; 34, cap; 35, connecting ring groove. Embodiment

[0044] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application. Embodiment

[0045] In the embodiments of the application, the anti-falling fastener, please refer to Figures 1-4 and 6-11, including fixed bolt head 1, fixed bolt body 2 and fixed nut 3, the outer surface of the fixed bolt body 2 is provided with a first right thread, the first right thread is threadedly connected with the fixed nut 3, the bottom of the first right thread is provided with a limiting block 4, the limiting block 4 is fixedly connected to the outer surface of the fixed bolt body 2, and the limiting block 4 is made of an elastic and easily deformable material;

[0046] The top of the fixed nut 3 is provided with a washer 5, the inner wall of the washer 5 is fixedly connected with a protrusion 6, the outer surface of the fixed bolt body 2 is provided with a fixed groove 7, the protrusion 6 is matched with the fixed groove 7, the inside of the fixed nut 3 is provided with a plurality of locking structures, and the fixed nut 3 and the washer 5 are connected through the locking structures;

[0047] The outer surface of the fixed bolt body 2 is provided with a reverse thread at the bottom, and the reverse thread is threadedly connected with a fastening nut 8, the fixed nut 3 is matched with the reverse thread, the outer surface of the fixed bolt body 2 is provided with a second limiting groove 9, the second limiting groove 9 is internally clamped with a clamping block 10, the top of the fastening bolt is provided with a first clamping plate 11, the first clamping plate 11 is connected with the clamping block 10, the bottom of the first clamping plate 11 is fixedly connected with a connecting plate 12, one side of the connecting plate 12 is slidably connected with a second clamping plate 13, and the first clamping plate 11 and the second clamping plate 13 are fixedly connected through a fixing structure.

[0048] Specifically, the cross-sectional shape of the limiting block 4 is triangular, and the outer surface of the limiting block 4 is provided with a second normal thread, which is threadedly connected with the fixed nut 3.

[0049] Specifically, the locking structure includes a limiting rod 15, the top of the fixed nut 3 is provided with a through groove 16, the limiting rod 15 is arranged in the through groove 16, the bottom of the washer 5 is provided with a first limiting groove 17, the first limiting groove 17 is matched with the through groove 16, the limiting rod 15 can be inserted into the first limiting groove 17 through the through groove 16, the bottom of the limiting rod 15 is rotatably connected with a limiting plate 18, the limiting plate 18 and the fixed nut 3 are fixedly connected with a spring 19, the outer surface of the limiting rod 15 is provided with a first external thread, the inner wall of the first limiting groove 17 is provided with a first internal thread, and the limiting rod 15 and the first limiting groove 17 are threadedly connected.

[0050] Specifically, the fixing structure includes a limiting screw 24, the fastening nut 8 is provided with a through hole 25, the first clamping plate 11 and the second clamping plate 13 are both provided with a fixing hole 26, the limiting screw 24 passes through the fixing hole 26 and is arranged in the through hole 25, the limiting screw 24 is threadedly connected with a limiting nut 27 at both ends, and the bottom of the first clamping plate 11 and the top of the second clamping plate 13 are both fixedly connected with a second buffer pad 28.

[0051] When fixing some large equipment, the fixed bolt body 2 is inserted through the mounting hole of the equipment to be fixed, then the protrusion 6 is matched with the fixed groove 7, the washer 5 is inserted through the fixed bolt body 2, and the washer 5 is inserted through the limiting block 4, then the fixed nut 3 is sleeved on the outer surface of the fixed bolt body 2, the fixed nut 3 is sequentially inserted through the reverse thread and the limiting block 4, and finally the fixed nut 3 is threadedly connected with the first normal thread, since the limiting block 4 is made of an elastic and deformable material, the washer 5 and the fixed nut 3 can be inserted through the deformation of the limiting block 4, the limiting block 4 limits the fixed nut 3, so that the fixed nut 3 is prevented from falling off, the cross-sectional shape of the limiting block 4 is triangular, so that the fixed nut 3 can be better limited and prevented from falling off, the second normal thread is arranged on the outer surface of the limiting block 4, so that the fixed nut 3 can be easily screwed, then the washer 5 is fixedly connected with the fixed nut 3 through the locking structure, in the original state, the spring 19 supports the limiting plate 18, so that the limiting rod 15 is separated from the washer 5, after the fixed nut 3 is fixed, the limiting rod 15 is threadedly connected with the first limiting groove 17 by rotating the limiting rod 15, so that the washer 5 is connected with the fixed nut 3, since the fixed groove 7 limits the rotation of the protrusion 6, the rotation of the fixed nut 3 is limited, so that the fixed nut 3 is prevented from falling off again, then the fastening nut 8 is sleeved on the outer surface of the fixed bolt body 2, so that the fixed nut 3 is threadedly connected with the reverse thread, then the clamping block 10 is arranged in the second limiting groove 9, the first clamping plate 11 is arranged on the top of the fastening nut 8, and the second clamping plate 13 is arranged on the bottom of the fastening nut 8, then the clamping block 10 is fixed in the second limiting groove 9 by again screwing the fastening nut 8, then the first clamping plate 11 and the second clamping plate 13 are connected with the fastening nut 8 through the fixing structure, so that the second clamping plate 13 moves upward during the fixing process, so that the first clamping plate 11 and the second clamping plate 13 better fix the fastening nut 8, since the second limiting groove 9 limits the rotation of the clamping block 10, the fastening nut 8 is limited and prevented from rotating, the anti-falling effect of the fastening nut 8 is improved, and the anti-falling effect of the fixed nut 3 is further improved. Embodiment

[0052] The anti-falling fastener comprises a fixed bolt head 1, a fixed bolt body 2 and a fixed nut 3, the outer surface of the fixed bolt body 2 is provided with a first normal thread, the first normal thread is threadedly connected with the fixed nut 3, the bottom of the first normal thread is provided with a limiting block 4, the limiting block 4 is fixedly connected to the outer surface of the fixed bolt body 2, and the limiting block 4 is made of an elastic and deformable material.

[0053] The top of the fixed nut 3 is provided with a washer 5, the inner wall of the washer 5 is fixedly connected with a protrusion 6, the outer surface of the fixed bolt body 2 is provided with a fixed groove 7, the protrusion 6 is matched with the fixed groove 7, the inside of the fixed nut 3 is provided with a plurality of locking structures, and the fixed nut 3 is connected with the washer 5 through the locking structures.

[0054] The outer surface of the fixed bolt body 2 is provided with a reverse thread at the bottom, and a fastening nut 8 is threadedly connected to the outer surface of the reverse thread. The fixed nut 3 matches the reverse thread. The outer surface of the fixed bolt body 2 is provided with a second limiting groove 9. The second limiting groove 9 is internally connected with a clamping block 10. The top of the fastening bolt is provided with a first clamping plate 11. The first clamping plate 11 is connected with the clamping block 10. The bottom of the first clamping plate 11 is fixedly connected with a connecting plate 12. The connecting plate 12 is slidably connected with a second clamping plate 13 on one side. The first clamping plate 11 and the second clamping plate 13 are fixedly connected through a fixing structure.

[0055] The difference from example 1 is that, referring to Figures 1-10 , a connecting block 14 is arranged between the limiting block 4 and the reverse thread. The connecting block 14 is made of elastic and deformable material. The cross-sectional shape of the connecting block 14 is triangular. The height of the connecting block 14 is longer than the height of the fixed nut 3.

[0056] Specifically, the outer surface of the limiting rod 15 is fixedly connected with a rotating block 20. The bottom of the gasket 5 is fixedly connected with a first buffer pad 21. The outer surface of the gasket 5 is provided with a plurality of first positioning lines 22. The outer surface of the fixed nut 3 is provided with a plurality of second positioning lines 23. The first positioning lines 22 correspond to the positions of the first limiting grooves 17. The second positioning lines 23 correspond to the positions of the through grooves 16.

[0057] Specifically, the bottom of the fixed bolt head 1 is fixedly connected with a first elastic gasket 29. The top of the gasket 5 is fixedly connected with a second elastic gasket 30. The bottom of the first elastic gasket 29 and the top of the second elastic gasket 30 are both provided with a deformation groove 31.

[0058] Specifically, the outer surface of the fixed bolt body 2 is fixedly connected with a sealing ring 32. The bottom of the sealing ring 32 is fixedly connected with a guide ring 33. The cross-sectional shape of the guide ring 33 is triangular. The sealing ring 32 and the guide ring 33 are both made of elastic material.

[0059] Specifically, the bottom of the fixed bolt body 2 is provided with a sealing cap 34. The bottom of the fastening nut 8 is provided with a connecting ring groove 35. The inner wall of the connecting ring groove 35 is provided with a second external thread. The inner wall of the sealing cap 34 is provided with a second internal thread. The sealing cap 34 is threadedly connected with the fastening nut 8.

[0060] By being provided with the connecting block 14, on one hand, the effect of limiting the fixed nut 3 is realized, preventing the fixed nut 3 from continuing to fall off, on the other hand, it can be used as a buffer part between the reverse thread and the first normal thread of the fixed nut 3, and at the same time, the friction force is increased, by being provided with the rotating block 20, it is convenient to rotate the limiting rod 15, the first buffer pad 21 has a certain deformation force, through the deformation of the first buffer pad 21, it is convenient to align the first positioning line 22 with the second positioning line 23, by aligning the first positioning line 22 with the second positioning line 23, it is convenient to judge whether the through slot 16 and the first limiting slot 17 are matched, at the same time, the first buffer pad 21 can increase the friction force, improve the connection tightness of the washer 5 and the fixed nut 3, the limiting screw rod 24 is passed through the fixed hole 26 and the through hole 25, and is fixed by the limiting nut 27, the first clamping plate 11 and the second clamping plate 13 are fixedly connected with the fastening nut 8, by being provided with the second buffer pad 28, the connection tightness of the first clamping plate 11 and the second clamping plate 13 to the fastening nut 8 is improved, by being provided with the first elastic gasket 29 and the second elastic gasket 30, the connection stability of the equipment to be connected is improved, and the anti-shock ability is improved, the deformation groove 31 is provided, the friction force is increased, the deformation ability is improved, and the connection stability is further improved, by being provided with the sealing ring 32 and the guide ring 33, when the fixed bolt body 2 is passed through the mounting hole inside the equipment to be fixed, the guide ring 33 guides the sealing ring 32 to enter the inside of the mounting hole, the sealing ring 32 is interference fit with the mounting hole, the equipment to be fixed is more tightly connected with the fixed bolt body 2, the anti-shock ability of the fixed bolt body 2 is improved, the cap 34 is placed in the connecting ring groove 35, and the cap 34 is connected with the fastening nut 8 through threads, and the fastening nut 8 is further limited.

[0061] The working principle of the present application is that when some large equipment is fixed, the fixed bolt body 2 is inserted into the installation hole of the equipment to be fixed, then the protrusion 6 is matched with the fixed groove 7, the washer 5 is inserted through the fixed bolt body 2, and the washer 5 is inserted through the limiting block 4, then the fixed nut 3 is sleeved on the outer surface of the fixed bolt body 2, the fixed nut 3 is sequentially inserted through the reverse thread and the limiting block 4, and finally the fixed nut 3 is threadedly connected with the first normal thread, since the limiting block 4 is made of an elastic and deformable material, the washer 5 and the fixed nut 3 can be inserted through the deformation of the limiting block 4, the limiting block 4 limits the fixed nut 3 to prevent the fixed nut 3 from falling off, at the same time, the influence of external water vapor is isolated to prevent corrosion of the fastener and improve the strength of the fastener, the cross-sectional shape of the limiting block 4 is triangular, which can better limit the fixed nut 3 to prevent the fixed nut 3 from falling off, and the second normal thread is arranged on the outer surface of the limiting block 4 to facilitate the tightening of the fixed nut 3, then the washer 5 and the fixed nut 3 are fixedly connected through the locking structure, in the original state, the spring 19 supports the limiting plate 18 to make the limiting rod 15 disengage from the washer 5, after the fixed nut 3 is fixed, the limiting rod 15 is threadedly connected with the first limiting groove 17 by rotating the limiting rod 15, so that the washer 5 and the fixed nut 3 are connected, since the fixed groove 7 limits the rotation of the protrusion 6, the rotation of the fixed nut 3 is limited, and the fixed nut 3 is prevented from falling off again;

[0062] The fastening nut 8 is sleeved on the outer surface of the fixed bolt body 2, the fixed nut 3 is threadedly connected with the reverse thread, then the clamping block 10 is placed in the second limiting groove 9, the first clamping plate 11 is on the top of the fastening nut 8, and the second clamping plate 13 is on the bottom of the fastening nut 8, then the fastening nut 8 is tightened again to fix the clamping block 10 in the second limiting groove 9, then the first clamping plate 11 and the second clamping plate 13 are connected with the fastening nut 8 through the fixing structure, so that the second clamping plate 13 moves upward during the fixing process, and the first clamping plate 11 and the second clamping plate 13 better fix the fastening nut 8, since the second limiting groove 9 limits the rotation of the clamping block 10, the fastening nut 8 is limited and prevented from rotating, the anti-falling effect of the fastening nut 8 is improved, and the anti-falling effect of the fixed nut 3 is further improved.

[0063] It is apparent to those skilled in the art that the present application is not limited to the details of the foregoing exemplary embodiments, and that the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being defined by the appended claims rather than by the foregoing description, and it is intended that all changes that come within the meaning and range of equivalency of the claims are embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0064] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature described. The specification can include implicit combinations of explicitly mentioned features and / or explicit combinations of implicitely mentioned features. Each embodiment depends on the explicit combinations of features and / or the implicit combinations of features made specifically within that embodiment, and each such embodiment can be combined with every other such embodiment to create further embodiments.

Claims

1. An anti-loosening fastener, comprising a fixing bolt head (1), a fixing bolt body (2), and a fixing nut (3), characterized in that, The outer surface of the fixing bolt body (2) is provided with a first positive thread, and a fixing nut (3) is threadedly connected to the outer surface of the first positive thread. A limiting block (4) is provided at the bottom of the first positive thread. The limiting block (4) is fixedly connected to the outer surface of the fixing bolt body (2). The limiting block (4) is made of an elastic and easily deformable material. The top of the fixing nut (3) is provided with a washer (5), and the inner wall of the washer (5) is fixedly connected with a protrusion (6). The outer surface of the fixing bolt body (2) is provided with a fixing groove (7). The protrusion (6) matches the fixing groove (7). The fixing nut (3) is provided with multiple locking structures inside. The fixing nut (3) and the washer (5) are connected by the locking structures. The bottom of the outer surface of the fixing bolt body (2) is provided with a reverse thread, and a fastening nut (8) is threadedly connected to the outer surface of the reverse thread. The fastening nut (8) matches the reverse thread. The outer surface of the fixing bolt body (2) is provided with a second limiting groove (9), and a locking block (10) is engaged inside the second limiting groove (9). The top of the fastening nut is provided with a first clamping plate (11), and the first clamping plate (11) is connected to the locking block (10). A connecting plate (12) is fixedly connected to the bottom of the first clamping plate (11), and a second clamping plate (13) is slidably connected to one side of the connecting plate (12). The first clamping plate (11) and the second clamping plate (13) are fixedly connected by a fixing structure. The limiting block (4) has a triangular cross-sectional shape, and the outer surface of the limiting block (4) is provided with a second positive thread, which is threadedly connected to the fixing nut (3). A connecting block (14) is provided between the limiting block (4) and the reverse thread. The connecting block (14) is made of an elastic and easily deformable material. The cross-sectional shape of the connecting block (14) is set as a triangle. The height of the connecting block (14) is longer than the height of the fixing nut (3).

2. The anti-loosening fastener according to claim 1, characterized in that, The locking structure includes a limiting rod (15), a through groove (16) is provided on the top of the fixing nut (3), the limiting rod (15) is provided inside the through groove (16), the bottom of the washer (5) is provided with a first limiting groove (17), the first limiting groove (17) matches the through groove (16), the limiting rod (15) can pass through the through groove (16) and be inserted into the first limiting groove (17), the bottom of the limiting rod (15) is rotatably connected to a limiting plate (18), and a spring (19) is fixedly connected between the limiting plate (18) and the fixing nut (3).

3. The anti-loosening fastener according to claim 2, characterized in that, The outer surface of the limiting rod (15) is provided with a first external thread, and the inner wall of the first limiting groove (17) is provided with a first internal thread. The limiting rod (15) and the first limiting groove (17) are connected by threads.

4. The anti-loosening fastener according to claim 3, characterized in that, The outer surface of the limiting rod (15) is fixedly connected to a rotating block (20), the bottom of the washer (5) is fixedly connected to a first buffer pad (21), the outer surface of the washer (5) is provided with a plurality of first positioning lines (22), the outer surface of the fixing nut (3) is provided with a plurality of second positioning lines (23), the first positioning lines (22) correspond to the position of the first limiting groove (17), and the second positioning lines (23) correspond to the position of the through groove (16).

5. The anti-loosening fastener according to claim 1, characterized in that, The fixing structure includes a limiting screw (24), a through hole (25) on the fastening nut (8), and fixing holes (26) on the first clamping plate (11) and the second clamping plate (13). The limiting screw (24) passes through the fixing hole (26) and is set inside the through hole (25). The two ends of the limiting screw (24) are threaded with limiting nuts (27). The bottom of the first clamping plate (11) and the top of the second clamping plate (13) are fixedly connected with second buffer pads (28).

6. The anti-loosening fastener according to claim 1, characterized in that, The bottom of the fixing bolt head (1) is fixedly connected to a first elastic washer (29), and the top of the washer (5) is fixedly connected to a second elastic washer (30). The bottom of the first elastic washer (29) and the top of the second elastic washer (30) are both provided with deformation grooves (31).

7. The anti-loosening fastener according to claim 1, characterized in that, A sealing ring (32) is fixedly connected to the outer surface of the fixing bolt body (2), and a guide ring (33) is fixedly connected to the bottom of the sealing ring (32). The cross-sectional shape of the guide ring (33) is set as a triangle. Both the sealing ring (32) and the guide ring (33) are made of elastic material.

8. The anti-loosening fastener according to claim 1, characterized in that, The bottom of the fixing bolt body (2) is provided with a cap (34), the bottom of the fastening nut (8) is provided with a connecting ring groove (35), the inner wall of the connecting ring groove (35) is provided with a second external thread, the inner wall of the cap (34) is provided with a second internal thread, and the cap (34) and the fastening nut (8) are connected by threads.

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