Anti-loose fastener

Abstract

The utility model discloses an anti-loose fastener which comprises a bolt head and a threaded rod, the outer side of the threaded rod is recessed inwards to form two limiting grooves, a limiting block is movably arranged in each limiting groove, the two limiting blocks are both fixedly connected with a first insertion ring, and a gear ring is rotatably arranged at the lower end of each first insertion ring. A nut in threaded connection with the threaded rod is fixedly arranged at the lower end of the gear ring, a first supporting ring is fixedly arranged on the outer side of the first insertion ring, a plurality of limiting rods are fixedly arranged at the lower end of the first supporting ring, the outer side of each limiting rod is movably sleeved with a first spring, and the multiple limiting rods are slidably connected with a fixing shell matched with the gear ring; the lower end of each limiting rod penetrates through the fixing shell to be fixedly connected with a limiting plate, nuts can be limited after the whole fastener fastens two mechanical elements, the phenomenon that the nuts loosen and fall off after being used for a long time is avoided, bolt heads, threaded rods and the nuts can be protected, meanwhile, a reinforcing layer, an anti-corrosion layer and a protection layer are arranged, and the anti-corrosion effect is good. The hardness and the corrosion resistance are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, and more specifically, to an anti-loosening fastener. Background Art

[0002] Fasteners are mechanical components used to connect and fix two or more parts. They are common in many industrial and daily applications, such as in automobiles, aviation, construction, and furniture manufacturing. Bolts and nuts are common fasteners. Existing fasteners do not have anti-loosening structures in the process of fastening the mechanical components of the equipment. After long-term use, the nuts are prone to loosening, and in severe cases, they will fall off, causing the fastened mechanical components to loosen or fall off, causing damage to the equipment and affecting its normal use; secondly, the existing fasteners are usually exposed to the outside when fastening the mechanical components of the equipment, and will be corroded by the temperature, humidity, oxygen content and corrosive substances in the installation area. The corrosion of the fasteners will affect their own hardness, shaping and toughness, causing deformation and strength reduction of the fasteners, reducing the life of the entire fastener. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the problems existing in the prior art, the utility model provides an anti-loosening fastener to solve the technical problem mentioned in the background technology that the existing fasteners are not provided with an anti-loosening structure during the fastening process of the mechanical components of the equipment, and the nuts are prone to loosening after long-term use.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-loosening fastener, comprising a bolt head and a threaded rod, the outer side of the threaded rod is inwardly recessed to form two limit grooves, a limit block is movably provided in each of the limit grooves, the two limit blocks are fixedly connected to a first insertion ring, a gear ring is rotatably provided at the lower end of the first insertion ring, a nut threadedly connected to the threaded rod is fixedly provided at the lower end of the gear ring, a first support ring is fixedly provided at the outer side of the first insertion ring, a plurality of limit rods are fixedly provided at the lower end of the first support ring, a first spring is movably sleeved at the outer side of each limit rod, a plurality of limit rods are slidably connected to a fixed shell matched with the gear ring, and the lower end of each limit rod passes through the fixed shell and is fixedly connected to a limit plate;

[0007] A second insert ring is fixedly provided at the lower end of the bolt head, a second support ring is fixedly provided at the outer side of the second insert ring, and protective covers are respectively installed on the first support ring and the second support ring.

[0008] The utility model is further configured that the protective cover is provided with two fixed chambers, and a movable plate is movably provided in each of the fixed chambers to facilitate the movement of the movable plate.

[0009] The utility model is further configured that two second springs are fixedly connected between one side of the movable plate and the fixed chamber to facilitate pushing the movable plate.

[0010] The utility model is further configured that a pushing rod and a fixing rod are fixedly provided on the other side of the movable plate, and one end of the pushing rod passes through the fixing chamber and extends to the outside of the fixing chamber to facilitate the movement of the fixing rod.

[0011] The utility model is further configured such that mounting rings are fixedly provided on the first support ring and the second support ring respectively, one end of the fixing rod passes through the fixing chamber and is inserted into the mounting ring, and the mounting ring is provided with a fixing hole matching with the fixing rod to facilitate fixing of the protective cover.

[0012] The utility model is further configured that the bolt head, the threaded rod and the nut respectively include a base material layer, and a reinforcement layer is provided on the outer side of the base material layer to increase the strength of the bolt head, the threaded rod and the nut.

[0013] The utility model is further configured that an anti-corrosion layer is provided on the outer side of the reinforcement layer to increase the corrosion resistance of the bolt head, the threaded rod and the nut.

[0014] The utility model is further configured such that a protective layer is provided on the outer side of the anti-corrosion layer, so as to increase the wear resistance and corrosion resistance of the bolt head, the threaded rod and the nut.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides an anti-loosening fastener, which has the following beneficial effects:

[0017] 1. Through the coordination of the bolt head, the threaded rod, the limit groove, the limit block, the first insertion ring, the gear ring, the nut, the first support ring, the limit rod, the first spring, the fixed shell and the limit plate, the nut can be limited after the entire fastener fastens the two mechanical components, thereby preventing the nut from loosening and falling off after long-term use, and preventing the fastened mechanical components from loosening or falling off to cause damage to the equipment, thereby ensuring the normal use of the equipment.

[0018] 2. The protective cover can be quickly installed by cooperating with the second insertion ring, the second support ring, the protective cover, the fixing chamber, the movable plate, the second spring, the push rod, the fixing rod, the mounting ring and the fixing hole, so as to protect the bolt head, the threaded rod and the nut from being exposed to the outside, thereby increasing the corrosion resistance of the entire fastener, reducing the deformation and strength reduction caused by the corrosion of the fastener, and extending the life of the entire fastener.

[0019] 3. By setting the base material layer, reinforcement layer, anti-corrosion layer and protective layer, the service life of the entire reinforcement can be extended. The reinforcement layer is a tungsten-cobalt alloy layer, which can improve the hardness of the fastener. The anti-corrosion layer is sprayed with water-based steel structure anti-corrosion paint, which can improve the corrosion resistance of the fastener. The protective layer is a silicon carbide anti-corrosion and wear-resistant coating, which can improve the wear resistance and corrosion resistance of the fastener. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of an anti-loosening fastener in an installed state;

[0021] Figure 2 It is a schematic diagram of the structure of the nut and its connecting parts when the gear ring is fixed;

[0022] Figure 3 It is a schematic diagram of the partial cross-sectional structure of the nut and its connecting parts when the gear ring is fixed;

[0023] Figure 4 It is a schematic diagram of a partial cross-section structure when the protective cover is installed;

[0024] Figure 5 Schematic diagram of the structure of the substrate layer and its connecting layer.

[0025] In the figure: 1. bolt head; 2. threaded rod; 3. limit groove; 4. limit block; 5. first insert ring; 6. gear ring; 7. nut; 8. first support ring; 9. limit rod; 10. first spring; 11. fixed shell; 12. limit plate; 13. second insert ring; 14. second support ring; 15. protective cover; 16. fixed chamber; 17. movable plate; 18. second spring; 19. push rod; 20. fixed rod; 21. mounting ring; 22. fixing hole; 23. base material layer; 24. reinforcement layer; 25. anti-corrosion layer; 26. protective layer. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0028] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0029] See also Figure 1-5 , an anti-loosening fastener comprises a bolt head 1 and a threaded rod 2, the outer side of the threaded rod 2 is recessed inward to form two limit grooves 3, a limit block 4 is movably provided in each of the limit grooves 3, and the two limit blocks 4 are fixedly connected with a first insertion ring 5, a gear ring 6 is rotatably provided at the lower end of the first insertion ring 5, a nut 7 threadedly connected to the threaded rod 2 is fixedly provided at the lower end of the gear ring 6, a first support ring 8 is fixedly provided at the outer side of the first insertion ring 5, and a plurality of limit rods 9 are fixedly provided at the lower end of the first support ring 8, a first spring 10 is movably sleeved on the outer side of each limit rod 9, and a plurality of limit rods 9 are slidably connected with a fixed shell 11 matched with the gear ring 6, and the lower end of each limit rod 9 passes through the fixed shell 11 and is fixedly connected to a limit plate 12;

[0030] A second insert ring 13 is fixedly disposed at the lower end of the bolt head 1 , a second support ring 14 is fixedly disposed outside the second insert ring 13 , and protective covers 15 are respectively mounted on the first support ring 8 and the second support ring 14 .

[0031] In this embodiment, the threaded rod 2 is inserted into the mounting holes corresponding to the two mechanical components to be fastened, so that the threaded rod 2 passes through the mounting holes and is exposed, the threaded rod 2 drives the bolt head 1 to move, and the bolt head 1 drives the second insertion ring 13 to move, so that one end of the second insertion ring 13 is inserted into the mounting hole, the first insertion ring 5 is sleeved on one end of the threaded rod 2, and drives the two limit blocks 4 to be placed in the limit groove 3, the first insertion ring 5 drives the gear ring 6 and the nut 7 to move, and when the nut 7 contacts the threaded rod 2, it pushes the fixed shell 11, so that the fixed shell 11 moves along the plurality of The first limiting rod 9 moves and separates from the toothed ring 6, the first spring 10 is compressed, and the nut 7 is rotated so that the nut 7 rotates and moves at the same time, and the nut 7 drives the first insertion ring 5 and the two limiting blocks 4 to move along the limiting groove 3, so that one end of the first insertion ring 5 is inserted into the mounting hole. Under the cooperation of the nut 7, the threaded rod 2 and the bolt head 1, the two mechanical components are fastened, and the fixed shell 11 is loosened. Under the action of the first spring 10, the fixed shell 11 moves back to the original position, thereby fixing the toothed ring 6, and the limiting plate 12 limits the fixed shell 11. During the use of the entire fastener, the two limiting grooves 3 limit the two limiting blocks 4, the limiting blocks 4 limit the fixed shell 11 through the first insertion ring 5, the first support ring 8 and the first limiting rod 9, and the fixed shell 11 limits the nut 7 through the toothed ring 6, thereby preventing loosening during use.

[0032] More specifically, after the entire fastener is installed, the nut 7 can be limited by the fixed toothed ring 6, thereby preventing the nut 7 from loosening during use. After the entire fastener is installed, the two protective covers 15 are respectively installed on the first support ring 8 and the second support ring 14, thereby providing corrosion protection for the nut 7, the bolt head 1 and the screw.

[0033] See also Figure 4 As an implementation method for moving the movable plate 17 , two fixed chambers 16 are provided on the protective cover 15 , and a movable plate 17 is movably provided in each of the fixed chambers 16 .

[0034] Specifically, the movable plate 17 can move in the fixed chamber 16 .

[0035] See also Figure 4 As an implementation method for pushing the movable plate 17 , two second springs 18 are fixedly connected between one side of the movable plate 17 and the fixed chamber 16 .

[0036] Specifically, when the moving plate 17 moves, the second spring 18 is compressed, and the moving plate 17 can be pushed to move under the action of the second spring 18 .

[0037] See also Figure 4 As an implementation method for moving the fixed rod 20 , a push rod 19 and a fixed rod 20 are fixedly provided on the other side of the movable plate 17 , and one end of the push rod 19 passes through the fixed chamber 16 and extends to the outside of the fixed chamber 16 .

[0038] Specifically, the pushing rod 19 is pushed, the pushing rod 19 drives the moving plate 17 to move in the fixing chamber 16, and the moving plate 17 drives the fixing rod 20 to move.

[0039] See also Figure 4 As an implementation method for fixing the protective cover 15: the first support ring 8 and the second support ring 14 are respectively fixed with mounting rings 21, one end of the fixing rod 20 passes through the fixing chamber 16 and is inserted into the mounting ring 21, and the mounting ring 21 is provided with a fixing hole 22 that matches the fixing rod 20.

[0040] Specifically, when the fixing rod 20 is inserted into the fixing hole 22 , the fixing rod 20 can be fixed to the mounting ring 21 , thereby fixing the protective cover 15 to the mounting ring 21 .

[0041] See also Figure 5 As an implementation method for improving the strength of the bolt head 1, the threaded rod 2 and the nut 7: the bolt head 1, the threaded rod 2 and the nut 7 respectively include a base material layer 23, and a reinforcement layer 24 is provided on the outer side of the base material layer 23.

[0042] Specifically, the reinforcement layer 24 is a tungsten-cobalt alloy layer, which can improve the hardness of the bolt head 1 , the threaded rod 2 and the nut 7 .

[0043] See also Figure 5 As an implementation method for improving the corrosion resistance of the bolt head 1 , the threaded rod 2 and the nut 7 : an anti-corrosion layer 25 is provided on the outer side of the reinforcement layer 24 .

[0044] Specifically, the anti-corrosion layer 25 is sprayed with water-based steel structure anti-corrosion paint, which can improve the corrosion resistance of the bolt head 1, the threaded rod 2 and the nut 7.

[0045] See also Figure 5 As an implementation method for improving the wear resistance and corrosion resistance of the bolt head 1 , the threaded rod 2 and the nut 7 : a protective layer 26 is provided on the outside of the anti-corrosion layer 25 .

[0046] Specifically, the protective layer 26 is a silicon carbide anti-corrosion and wear-resistant coating, which can improve the wear resistance and corrosion resistance of the bolt head 1, the threaded rod 2 and the nut 7.

[0047] To sum up, when the overall equipment is in use:

[0048] When fasteners are needed to fasten two mechanical components, the threaded rod 2 is inserted into the mounting holes corresponding to the two mechanical components that need to be fastened, so that one end of the threaded rod 2 passes through the mounting hole and is exposed, the threaded rod 2 drives the bolt head 1 to move, and the bolt head 1 drives the second insertion ring 13 to move, so that one end of the second insertion ring 13 is inserted into the mounting hole, the first insertion ring 5 is sleeved on one end of the threaded rod 2, and drives the two limit blocks 4 to be placed in the limit groove 3, the first insertion ring 5 drives the gear ring 6 and the nut 7 to move, and when the nut 7 contacts the threaded rod 2, the fixed shell 11 is pushed , so that the fixed shell 11 moves along the multiple limiting rods 9 and separates from the toothed ring 6, the first spring 10 is compressed, the nut 7 is rotated, and the nut 7 moves while rotating, and the nut 7 drives the first insertion ring 5 and the two limiting blocks 4 to move along the limiting groove 3, so that one end of the first insertion ring 5 is inserted into the mounting hole, and the two mechanical components are fastened with the cooperation of the nut 7, the threaded rod 2 and the bolt head 1, and the fixed shell 11 is loosened. Under the action of the first spring 10, the fixed shell 11 moves back to its original position, thereby fixing the toothed ring 6, and the limiting plate 12 limits the fixed shell 11. During the use of the entire fastener, the two limiting grooves 3 limit the two limiting blocks 4, the limiting blocks 4 limit the fixed shell 11 through the first insertion ring 5, the first support ring 8 and the first limiting rod 9, and the fixed shell 11 limits the nut 7 through the toothed ring 6, thereby preventing the nut 7 from loosening during use.

[0049] When the protective cover 15 needs to be installed, the two push rods 19 on the same protective cover 15 are pushed at the same time, and the push rod 19 drives the moving plate 17 to move in the fixing chamber 16, and the moving plate 17 drives the fixing rod 20 to move, and the second spring 18 is compressed, and the protective cover 15 is moved to the mounting ring 21 on the first support ring 8, so that the two fixing rods 20 are aligned with the two fixing holes 22, and the two push rods 19 are released. Under the action of the second spring 18, the moving plate 17 drives the push rod 19 and the fixing rod 20 to move back to the original position, and the fixing rod 20 is inserted into the fixing hole 22, and the fixing rod 20 can be fixed to the mounting ring 21, so that the protective cover 15 is fixed to the mounting ring 21 to protect the nut 7. The same method can be used to install another protective cover 15 in the mounting ring 21 on the second support ring 14 to protect the bolt head 1, and at the same time, the first insertion ring 5 and the second insertion ring 13 are respectively inserted into the mounting holes, so that the threaded rod 2 will not be exposed to the outside, thereby increasing the corrosion resistance of the threaded rod 2.

[0050] When the entire fastener is in use, the reinforcing layer 24 is a tungsten-cobalt alloy layer, which can improve the hardness of the bolt head 1, the threaded rod 2 and the nut 7; the anti-corrosion layer 25 is sprayed with a water-based steel structure anti-corrosion paint, which can improve the corrosion resistance of the bolt head 1, the threaded rod 2 and the nut 7; the protective layer 26 is a silicon carbide anti-corrosion and wear-resistant coating, which can improve the wear resistance and corrosion resistance of the bolt head 1, the threaded rod 2 and the nut 7.

[0051] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. An anti-loosening fastener, comprising a bolt head (1) and a threaded rod (2), characterized in that: The outer side of the threaded rod (2) is recessed inward to form two limit grooves (3), each of which is movably provided with a limit block (4), and the two limit blocks (4) are fixedly connected with a first insertion ring (5), and a gear ring (6) is rotatably provided at the lower end of the first insertion ring (5), and a nut (7) threadedly connected to the threaded rod (2) is fixedly provided at the lower end of the gear ring (6), and a first support ring (8) is fixedly provided at the outer side of the first insertion ring (5), and a plurality of limit rods (9) are fixedly provided at the lower end of the first support ring (8), and a first spring (10) is movably sleeved on the outer side of each limit rod (9), and the plurality of limit rods (9) are slidably connected with a fixed shell (11) matched with the gear ring (6), and the lower end of each limit rod (9) passes through the fixed shell (11) and is fixedly connected with a limit plate (12); A second insertion ring (13) is fixedly provided at the lower end of the bolt head (1), a second support ring (14) is fixedly provided outside the second insertion ring (13), and protective covers (15) are respectively installed on the first support ring (8) and the second support ring (14).

2. The anti-loosening fastener according to claim 1, characterized in that: The protective cover (15) is provided with two fixed chambers (16), and a movable plate (17) is movably provided in each of the fixed chambers (16).

3. The anti-loosening fastener according to claim 2, characterized in that: Two second springs (18) are fixedly connected between one side of the movable plate (17) and the fixed chamber (16).

4. The anti-loosening fastener according to claim 3, characterized in that: A pushing rod (19) and a fixing rod (20) are fixedly provided on the other side of the movable plate (17), and one end of the pushing rod (19) passes through the fixing chamber (16) and extends to the outside of the fixing chamber (16).

5. The anti-loosening fastener according to claim 4, characterized in that: The first support ring (8) and the second support ring (14) are respectively fixedly provided with mounting rings (21); one end of the fixing rod (20) passes through the fixing chamber (16) and is inserted into the mounting ring (21); and the mounting ring (21) is provided with a fixing hole (22) that matches the fixing rod (20).

6. An anti-loosening fastener according to any one of claims 1 or 2, characterized in that: The bolt head (1), the threaded rod (2) and the nut (7) respectively comprise a base material layer (23), and a reinforcement layer (24) is provided on the outer side of the base material layer (23).

7. The anti-loosening fastener according to claim 6, characterized in that: An anti-corrosion layer (25) is provided on the outer side of the reinforcement layer (24).

8. The anti-loosening fastener according to claim 7, characterized in that: A protective layer (26) is provided outside the anti-corrosion layer (25).

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