Anti-loosening screw and nut assembly

Abstract

The utility model relates to the technical field of screw and nut assemblies, in particular to an anti-loose screw and nut assembly. The problem that in the prior art, a nut assembly is difficult to disassemble is solved, and the practicability of equipment is improved. The anti-loose screw structurally comprises a screw and a nut, a screw head is fixed to the end of the screw, a first gasket and a second gasket are arranged between the screw head and the nut, a plurality of first anti-loose teeth are arranged on the side, close to the second gasket, of the first gasket, a plurality of second anti-loose teeth are arranged on the side, close to the first gasket, of the second gasket, and the first anti-loose teeth are meshed with the second anti-loose teeth. An abutting piece is arranged on the side, close to the first gasket, of the nut, the abutting piece is in sliding connection with the nut and abuts against the first gasket, and a control structure used for controlling the abutting piece to move is arranged in the nut. According to the embodiment, anti-loose self-locking between the screw and the nut can be achieved, disassembly of the screw and the nut can be achieved through the control structure, and the anti-loose self-locking nut has the advantages of being convenient to disassemble and high in practicability.

Description

Technical Field

[0001] This utility model relates to the field of screw and nut assembly technology, specifically to an anti-loosening screw and nut assembly. Background Technology

[0002] A lock-lock screw and nut assembly is a fastener specially designed to prevent screws and nuts from loosening during use. It typically consists of a screw and a nut, with the nut or screw designed to increase friction or restraint, thus preventing loosening due to factors such as vibration, temperature changes, or external forces.

[0003] like Figure 1 As shown, existing anti-loosening screw and nut assemblies have a washer on the nut, and grooves and blocks on the flange and washer of the nut. The blocks are engaged with the grooves to ensure self-locking, thereby preventing the nut from loosening due to vibration, temperature changes or external forces.

[0004] While this achieves self-locking and anti-loosening of the nut assembly, the self-locking is achieved by the locking block engaging with the slot, making it difficult to remove the nut by rotation and thus making the nut assembly difficult to disassemble. Utility Model Content

[0005] This utility model proposes an anti-loosening screw and nut assembly, which solves the problem of difficult disassembly of nut assemblies in the prior art and improves the practicality of the equipment.

[0006] The technical solution of this utility model is as follows:

[0007] An anti-loosening screw and nut assembly includes a screw and a nut. The screw has a screw head fixed to its end. A first washer and a second washer are provided between the screw head and the nut. The first washer has a plurality of first anti-loosening teeth near the second washer, and the second washer has a plurality of second anti-loosening teeth near the first washer. The first and second anti-loosening teeth mesh with each other. The nut has an abutment near the first washer. The abutment is slidably connected to the nut and abuts against the first washer. The nut has a control structure inside for controlling the movement of the abutment.

[0008] Furthermore, the nut is provided with a first sliding groove and a second sliding groove. A first sliding member is slidably connected in the first sliding groove, and a second sliding member is slidably connected in the second sliding groove. A first abutting block and a second abutting block are fixed near the nut side of the abutting member. A first abutting inclined surface and a second abutting inclined surface are respectively provided on the first sliding member and the second sliding member. A third abutting inclined surface and a fourth abutting inclined surface are respectively provided on the first abutting block and the second abutting block. The first abutting inclined surface and the third abutting inclined surface abut each other, and the second abutting inclined surface and the fourth abutting inclined surface abut each other.

[0009] Furthermore, a first lead screw is rotatably connected in the first sliding groove, and a second lead screw is rotatably connected in the second sliding groove. The first sliding member is threadedly connected to the first lead screw, and the second sliding member is threadedly connected to the second lead screw.

[0010] Furthermore, the abutment member is provided with a first limiting rod and a second limiting rod on both sides. The first limiting rod and the second limiting rod are slidably connected to the nut. A first limiting spring is sleeved on the first limiting rod. The two ends of the first limiting spring are fixedly connected to the first limiting rod and the nut, respectively. A second limiting spring is sleeved on the second limiting rod. The two ends of the second limiting spring are fixedly connected to the second limiting rod and the nut, respectively.

[0011] Furthermore, the cross-section of the first anti-loosening tooth is a right-angled triangular structure, and the inclination angle of the inclined surface of the first anti-loosening tooth is greater than the inclination angle of the thread on the screw. The second anti-loosening tooth has the same structure as the first anti-loosening tooth.

[0012] Furthermore, the nut has a rotating hole inside, which is threadedly connected to the screw. The nut has a rotating component on the side away from the bolt head, and the rotating component has a regular hexagonal cross-section.

[0013] Furthermore, the abutment is provided with an anti-slip layer, which is made of rubber material and has a plurality of anti-slip protrusions.

[0014] The working principle and beneficial effects of this utility model are as follows:

[0015] The installation process in this embodiment is as follows: When it is necessary to lock the screw and nut to prevent loosening, first insert the screw into the object to be installed, so that the screw head abuts against the object. Then, insert the second washer, the first washer, and the nut into the screw in sequence, so that the first anti-loosening tooth on the first washer and the second anti-loosening tooth on the second washer engage. Then rotate the rotating part on the nut to ensure that the first washer, the second washer, and the nut abut against each other. Since the inclination angle of the inclined surface of the first anti-loosening tooth and the inclination angle of the second anti-loosening tooth are greater than the inclination angle of the thread, the first washer that is in contact with the nut restricts the nut from continuing to rotate, and the screw and nut form a self-locking mechanism. When it is necessary to disassemble the screw and nut, rotate the first lead screw and the second lead screw, so that the first sliding block and the second sliding block move away from the first abutting block and the second abutting block. Under the action of the first limit spring and the second limit spring, the abutting part moves away from the first washer. At this time, since the nut is no longer restrained by the first washer, the nut can rotate.

[0016] This embodiment sets a first washer and a second washer between the screw head and the nut, and sets an abutment member on the side of the nut near the first washer. The first and second anti-loosening teeth between the first and second washers ensure that the screw and nut are not loosened. The movement of the abutment member is controlled by a control structure, which facilitates the disassembly of the screw and nut. This replaces the existing technology that uses grooves and blocks on the flange and washer of the nut, and the self-locking design of the screw and nut is achieved by the block engaging the groove. This embodiment not only achieves anti-loosening self-locking between the screw and nut, but also enables the disassembly of the screw and nut through the control structure. This embodiment has the advantages of convenient disassembly and strong practicality. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the existing technology;

[0019] Figure 2 This is a schematic diagram of the overall structure of this embodiment. Figure 1 ;

[0020] Figure 3 This is a schematic diagram of the overall structure of this embodiment. Figure 2 ;

[0021] Figure 4 This is a schematic diagram of the internal structure of the nut in this embodiment. Figure 1 ;

[0022] Figure 5 This is a schematic diagram of the internal structure of the nut in this embodiment. Figure 2 ;

[0023] Figure 6 This is a schematic diagram of the connection structure of the first limiting rod in this embodiment;

[0024] Figure 7 This is a schematic diagram of the internal structure of the first sliding groove in this embodiment;

[0025] Figure 8 This is a schematic diagram of the abutment component in this embodiment.

[0026] Explanation of icon numbers:

[0027] 1. Screw; 11. Screw head; 2. Nut; 21. First sliding groove; 211. First sliding component; 2111. First lead screw; 2112. First abutting inclined surface; 22. Second sliding groove; 221. Second sliding component; 2211. Second lead screw; 2212. Second abutting inclined surface; 23. Rotating hole; 3. Abutting component; 31. First abutting block; 311. Third abutting inclined surface; 32. Second abutting block; 321. Fourth abutting inclined surface; 33. First limiting rod; 331. First limiting spring; 34. Second limiting rod; 341. Second limiting spring; 35. Anti-slip layer; 351. Anti-slip protrusion; 41. First washer; 411. First anti-loosening tooth; 42. Second washer; 421. Second anti-loosening tooth; 5. Rotating component.

[0028] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0030] like Figures 2-8 As shown, this embodiment proposes an anti-loosening screw and nut assembly, which includes a screw 1 and a nut 2. A screw head 11 is fixedly disposed at the end of the screw 1. A first washer 41 and a second washer 42 are disposed between the screw head 11 and the nut 2. A plurality of first anti-loosening teeth 411 are disposed on the side of the first washer 41 near the second washer 42, and a plurality of second anti-loosening teeth 421 are disposed on the side of the second washer 42 near the first washer 41. The first anti-loosening teeth 411 and the second anti-loosening teeth 421 engage. An abutment 3 is disposed on the side of the nut 2 near the first washer 41. The abutment 3 is slidably connected to the nut 2 and abuts against the first washer 41. A control structure is disposed inside the nut 2 to control the movement of the abutment 3.

[0031] In this embodiment, the first sliding groove 21 and the second sliding groove 22 are disposed within the nut 2. The first sliding member 211 is slidably disposed within the first sliding groove 21, and the second sliding member 221 is slidably disposed within the second sliding groove 22. The first abutting block 31 and the second abutting block 32 are fixedly disposed on the abutting member 3 near the nut 2. The first abutting inclined surface 2112 and the second abutting inclined surface 2212 are respectively disposed on the first sliding member 211 and the second sliding member 221. The third abutting inclined surface 311 and the fourth abutting inclined surface 321 are respectively disposed on the first abutting block 31 and the second abutting block 32. The first abutting inclined surface 2112 and the third abutting inclined surface 311 abut each other, and the second abutting inclined surface 2212 and the fourth abutting inclined surface 321 abut each other. In this embodiment, the distance between the abutting member 3 and the nut 2 is controlled by the first abutting inclined surface 2112, the second abutting inclined surface 2212, the third abutting inclined surface 311, and the fourth abutting inclined surface 321. When the abutting part 3 moves away from the nut 2, it ensures that the abutting part 3 fully abuts against the first washer 41 to prevent the nut 2 and screw 1 from becoming loose; when the abutting block approaches the nut 2, the abutting part 3 is driven away from the nut 2, and the abutting part 3 can rotate.

[0032] In this embodiment, the first lead screw 2111 is rotatably disposed within the first sliding groove 21, and the second lead screw 2211 is rotatably disposed within the second sliding groove 22. The first sliding member 211 is threadedly connected to the first lead screw 2111, and the second sliding member 221 is threadedly connected to the second lead screw 2211. This embodiment controls the movement of the first sliding member 211 and the second sliding member 221 through the first lead screw 2111 and the second lead screw 2211, thereby controlling the abutment member 3 to move away from or close to the first gasket 41. Since the first sliding member 211 and the second sliding member 221 cannot reverse the rotation of the first lead screw 2111 and the second lead screw 2211, when the first lead screw 2111 and the second lead screw 2211 are rotated, the position of the abutment member 3 forms a self-locking mechanism, ensuring that there is no loosening between the screw 1 and the nut 2.

[0033] In this embodiment, the first limiting rod 33 and the second limiting rod 34 are disposed on both sides of the abutting member 3. Both the first limiting rod 33 and the second limiting rod 34 are slidably connected to the nut 2. A first limiting spring 331 is sleeved on the first limiting rod 33, and the two ends of the first limiting spring 331 are fixedly connected to the first limiting rod 33 and the nut 2, respectively. A second limiting spring 341 is sleeved on the second limiting rod 34, and the two ends of the second limiting spring 341 are fixedly connected to the second limiting rod 34 and the nut 2, respectively. In this embodiment, the movement of the abutting member 3 is controlled by the first limiting spring 331 and the second limiting spring 341, ensuring that the first abutting block 31 and the second abutting block 32 on the abutting member 3 always remain in contact with the first sliding member 211 and the second sliding member 221, which facilitates the control of the abutting member 3.

[0034] In this embodiment, the first anti-loosening tooth 411 has a right-angled triangular cross-section. The inclination angle of the inclined surface of the first anti-loosening tooth 411 is greater than the inclination angle of the thread on the screw 1. The second anti-loosening tooth 421 has the same structure as the first anti-loosening tooth 411. In this embodiment, the first anti-loosening tooth 411 and the second anti-loosening tooth 421 prevent the nut 2 from rotating relative to the screw 1. If the screw 1 is to rotate relative to the nut 2, the first washer 41 must first rotate relative to the second washer 42. When the abutment block on the nut 2 abuts against the first washer 41, because the inclination angle of the inclined surface of the first anti-loosening tooth 411 is greater than the inclination angle of the thread on the screw 1, the rotation of the first anti-loosening tooth 411 and the thread mutually restricts each other, forming a self-locking mechanism, thereby achieving the effect that the screw 1 and the nut 2 cannot rotate relative to each other.

[0035] In this embodiment, the rotating hole 23 is located inside the nut 2 and is threadedly connected to the screw 1. The rotating component 5 is located on the side of the nut 2 away from the bolt head, and the cross-section of the rotating component 5 is a regular hexagonal structure. This design is to facilitate the control of the nut 2 by a wrench.

[0036] In this embodiment, the anti-slip layer 35 is disposed on the abutment 3. The anti-slip layer 35 is made of rubber material, and a number of anti-slip protrusions 351 are disposed on the anti-slip layer 35. This design of the anti-slip layer 35 ensures that when the abutment 3 contacts the first gasket 41, a large frictional force is generated, and the abutment 3 will not slide relative to the gasket, thus ensuring the anti-loosening and self-locking fixation after the screw 1 and nut 2 are installed.

[0037] The installation process in this embodiment is as follows: When it is necessary to tighten the screw 1 and nut 2 to prevent loosening, first insert the screw 1 into the object to be installed, so that the screw head 11 abuts against the object. Then, insert the second washer 42, the first washer 41, and the nut 2 into the screw 1 in sequence, so that the first anti-loosening tooth 411 on the first washer 41 and the second anti-loosening tooth 421 on the second washer 42 engage. Then, rotate the rotating part 5 on the nut 2 to ensure that the first washer 41, the second washer 42, and the nut 2 abut against each other. Due to the inclined surface of the first anti-loosening tooth 411 and the inclined surface of the second anti-loosening tooth 421, The tilt angle is greater than the thread tilt angle. The first washer 41, which is in contact with the nut 2, restricts the nut 2 from continuing to rotate, and the screw 1 and the nut 2 form a self-locking mechanism. When it is necessary to disassemble the screw 1 and the nut 2, the first lead screw 2111 and the second lead screw 2211 are rotated, so that the first sliding block and the second sliding block move away from the first abutting block 31 and the second abutting block 32. Under the action of the first limit spring 331 and the second limit spring 341, the abutting part 3 moves away from the first washer 41. At this time, since the nut 2 is no longer restricted by the first washer 41, the nut 2 can rotate.

[0038] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0039] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A locking screw and nut assembly, comprising a screw (1) and a nut (2), characterized in that, The screw (1) is fixed with a screw head (11) at its end. A first washer (41) and a second washer (42) are provided between the screw head (11) and the nut (2). The first washer (41) has a plurality of first anti-loosening teeth (411) on the side near the second washer (42), and the second washer (42) has a plurality of second anti-loosening teeth (421) on the side near the first washer (41). The first anti-loosening teeth (411) and the second anti-loosening teeth (421) mesh. The nut (2) has an abutment (3) on the side near the first washer (41). The abutment (3) is slidably connected to the nut (2). The abutment (3) abuts against the first washer (41). The nut (2) has a control structure inside for controlling the movement of the abutment (3).

2. The anti-loosening screw and nut assembly according to claim 1, characterized in that, The nut (2) is provided with a first sliding groove (21) and a second sliding groove (22). A first sliding member (211) is slidably connected in the first sliding groove (21), and a second sliding member (221) is slidably connected in the second sliding groove (22). The abutting member (3) is fixed with a first abutting block (31) and a second abutting block (32) near the nut (2). A first abutting inclined surface (2112) and a second abutting inclined surface (2212) are respectively provided on the first sliding member (211) and the second sliding member (221). A third abutting inclined surface (311) and a fourth abutting inclined surface (321) are respectively provided on the first abutting block (31) and the second abutting block (32). The first abutting inclined surface (2112) and the third abutting inclined surface (311) abut against each other, and the second abutting inclined surface (2212) and the fourth abutting inclined surface (321) abut against each other.

3. The anti-loosening screw and nut assembly according to claim 2, characterized in that, A first lead screw (2111) is rotatably connected in the first sliding groove (21), and a second lead screw (2211) is rotatably connected in the second sliding groove (22). The first sliding member (211) is threadedly connected to the first lead screw (2111), and the second sliding member (221) is threadedly connected to the second lead screw (2211).

4. The anti-loosening screw and nut assembly according to claim 3, characterized in that, The abutment (3) is provided with a first limiting rod (33) and a second limiting rod (34) on both sides. The first limiting rod (33) and the second limiting rod (34) are slidably connected to the nut (2). A first limiting spring (331) is sleeved on the first limiting rod (33). The two ends of the first limiting spring (331) are fixedly connected to the first limiting rod (33) and the nut (2) respectively. A second limiting spring (341) is sleeved on the second limiting rod (34). The two ends of the second limiting spring (341) are fixedly connected to the second limiting rod (34) and the nut (2) respectively.

5. The anti-loosening screw and nut assembly according to claim 3, characterized in that, The first anti-loosening tooth (411) has a right-angled triangular cross-section. The inclination angle of the first anti-loosening tooth (411) is greater than the inclination angle of the thread on the screw (1). The second anti-loosening tooth (421) has the same structure as the first anti-loosening tooth (411).

6. The anti-loosening screw and nut assembly according to claim 1, characterized in that, The nut (2) has a rotating hole (23) inside, which is threaded to the screw (1). The nut (2) has a rotating part (5) on the side away from the bolt head, and the cross-section of the rotating part (5) is a regular hexagonal structure.

7. The anti-loosening screw and nut assembly according to claim 1, characterized in that, The abutment (3) is provided with an anti-slip layer (35), which is made of rubber material and has a number of anti-slip protrusions (351).

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