Combination nut with anti-loosening function

Abstract

The present invention relates to the technical field of combination nuts, and specifically to a combination nut with an anti-loosening function, comprising a first nut, wherein two first arc-shaped plates are symmetrically arranged on the surface of the first nut, a disc is fitted on the inner surface of the first arc-shaped plate, a fitting mechanism is arranged at the lower end of the first nut, and a limiting mechanism is arranged inside the disc. The first arc-shaped plates symmetrically arranged on the surface of the first nut adopt a set structure to wrap and clamp the disc, while the raised blocks fixedly arranged on the lower end surfaces of the two first arc-shaped plates can play a role in clamping the disc. The raised blocks on the surfaces of the two first arc-shaped plates can clamp the disc and prevent the disc from sliding downward, thereby preventing the second nut from loosening downward. The second arc-shaped plate tightly fits the first nut, the second nut and the screw together through elastic force, further improving the anti-loosening effect.

Description

Technical Field

[0001] The invention relates to the technical field of combined nuts, in particular to a combined nut with an anti-loosening function. Background Art

[0002] The combination nut with anti-loosening function is a specially designed fastener, which aims to solve the problem that traditional nuts are easy to loosen in harsh environments such as vibration and impact. The combination nut is usually composed of two or more nuts, which cooperate with each other through a specific design to achieve the anti-loosening function. The material of the combination nut is usually selected from high-strength, corrosion-resistant alloy steel or stainless steel to ensure its stability and durability during use. The combination nut with anti-loosening function is an efficient and reliable fastener solution, which is widely used in various occasions that need to withstand vibration and impact.

[0003] Although the existing combination nuts with anti-loosening function have solved the problem of easy loosening of traditional nuts to a certain extent, there are still some disadvantages. When the existing combination nuts are in use, although the combination nuts are designed to provide a stable locking force, the locking effect may be affected by various factors, such as material aging, corrosion, vibration, clearance, etc. Although the combination nuts are designed with an anti-loosening function, their locking effect may be limited under extreme conditions (such as high vibration, high impact or large temperature change environment), which may cause the nuts to loosen after long-term use, thereby affecting the stability and safety of the connection. The meshing gap between the nut and the bolt will loosen under high-intensity vibration, which will lead to uncertainty in the locking effect and instability in the connection, increasing the risk of equipment failure. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a combination nut with an anti-loosening function.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a combination nut with anti-loosening function, including a first nut, two first arc-shaped plates are symmetrically arranged on the surface of the first nut, a disc is attached to the inner surface of the first arc-shaped plate, a fitting mechanism is arranged at the lower end of the first nut, and a limiting mechanism is arranged inside the disc.

[0006] Preferably, an opening is formed inside the first nut.

[0007] Preferably, a protruding block is fixedly connected to the surface of the first arc-shaped plate.

[0008] Preferably, a slide groove is provided inside the disc, and a second nut is fixedly connected to the lower end of the disc.

[0009] Preferably, the fitting mechanism comprises a rotating shaft, both ends of the rotating shaft are rotatably connected to the opening surface in the first nut, and a steel plate is fixedly connected to the surface of the rotating shaft.

[0010] Preferably, the fitting mechanism further includes a second arc-shaped plate, the upper surface of the steel plate is fixedly connected with the second arc-shaped plate, and the upper end of the second arc-shaped plate is fixedly connected to the first nut.

[0011] Preferably, the limiting mechanism comprises a circular plate, the circular plate is tightly fitted with the steel plate, a third arc plate is fixedly connected to the lower end of the circular plate, and the lower end of the third arc plate is fixedly connected to the second nut.

[0012] Preferably, the limiting mechanism further includes a slider, the lower end of the circular plate is fixedly connected with the slider, and the slider is slidably connected to the sliding groove.

[0013] Beneficial effects of the present invention:

[0014] The combined nut with anti-loosening function described in the present invention adopts a structure in which the first arc plates symmetrically arranged on the surface of the first nut can wrap and clamp the disc, and at the same time, the raised blocks fixedly arranged on the lower end surfaces of the two first arc plates can play a role in clamping the disc. The raised blocks are arc-shaped, and the raised blocks on the surfaces of the two first arc plates can not only clamp the disc but also prevent the disc from sliding downward, thereby preventing the second nut from loosening downward.

[0015] The combined nut with an anti-loosening function described in the present invention has a structure in which a steel plate arranged inside the first nut can be rotated around a rotating shaft. After the steel plate rotates around the rotating shaft, it will fit tightly against the surface of the bolt. The upper end of the steel plate fits tightly against the surface of the bolt to prevent loosening. At the same time, when the steel plate compresses the second arc plate, the first nut can be pushed and extruded upward under the elastic force of the second arc plate, and the second nut can be pushed and extruded downward at the same time. The upward pushing and extrusion of the first nut and the downward pushing and extrusion of the second nut can tightly fit the first nut, the second nut and the screw rod, thereby preventing the gap between the first nut, the second nut and the screw rod from loosening due to vibration. The second arc plate tightly fits the first nut, the second nut and the screw rod together through elastic force, so that the gap between the bolt and the nut is tightly fitted together by the elastic force of the second arc plate, thereby further improving the anti-loosening effect.

[0016] The combined nut with anti-loosening function described in the present invention is that when the disc moves upward and contacts the bottom end of the steel plate, the steel plate will drive the disc to slide into the disc. When the disc slides into the disc, it will drive the third arc plate to move downward and bend. The third arc plate will also fit tightly against the surface of the bolt when it moves downward and bends. In this way, the third arc plate can tightly fix the second nut and the bolt together to prevent loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 A schematic diagram of the overall structure provided by the present invention;

[0019] Figure 2 is a schematic diagram of the connection structure between the first nut and the first arc-shaped plate;

[0020] Figure 3 It is a schematic diagram of the disc structure;

[0021] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of part A shown;

[0022] Figure 5 is a schematic diagram of the second nut structure;

[0023] Figure 6 It is a schematic diagram of the steel plate structure;

[0024] Figure 7 is a schematic diagram of the structure of the raised block;

[0025] Figure 8 is a schematic diagram of the opening structure;

[0026] Fig. 9 is a schematic diagram of the second curved plate structure;

[0027] Fig.10 It is a schematic diagram of the circular plate structure;

[0028] Fig.11 It is a schematic diagram of the connection structure between the third arc plate and the second nut.

[0029] In the figure: 100, first nut; 1001, opening; 200, first arc-shaped plate; 201, raised block; 300, disc; 3001, slide groove; 301, second nut; 400, fitting mechanism; 401, rotating shaft; 402, steel plate; 403, second arc-shaped plate; 500, limiting mechanism; 501, circular plate; 502, third arc-shaped plate; 503, slider. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] like Figure 1-Figure 11 As shown, a combination nut with an anti-loosening function described in the present invention includes a first nut 100, two first arc plates 200 are symmetrically arranged on the surface of the first nut 100, a disc 300 is bonded to the inner surface of the first arc plate 200, a bonding mechanism 400 is arranged at the lower end of the first nut 100, and a limiting mechanism 500 is arranged inside the disc 300; the first arc plates 200 symmetrically arranged on the surface of the first nut 200 can wrap and clamp the disc 300, and the raised blocks 201 fixedly arranged on the lower end surfaces of the two first arc plates 200 can play a role in clamping the disc 300, and the raised blocks 201 on the surfaces of the two first arc plates 200 can not only clamp the disc 300 but also prevent the disc 300 from sliding downward, thereby preventing the second nut 301 from loosening downward, and the second arc plate 403 tightly fits the first nut 100, the second nut 301 and the screw together through elastic force to further improve the anti-loosening effect.

[0032] Preferably, an opening 1001 is formed inside the first nut 100 .

[0033] Preferably, a protruding block 201 is fixedly connected to the surface of the first arc-shaped plate 200 .

[0034] Preferably, a slide groove 3001 is opened inside the disc 300, and a second nut 301 is fixedly connected to the lower end of the disc 300; firstly, the first nut 100 is screwed to a specified position on the bolt, and then the second nut 301 is screwed onto the bolt.

[0035] Preferably, the fitting mechanism 400 includes a rotating shaft 401, both ends of which are rotatably connected to the surface of the opening 1001 in the first nut 100, a steel plate 402 is fixedly connected to the surface of the rotating shaft 401, a second arc plate 403 is fixedly connected to the upper surface of the steel plate 402, and the upper end of the second arc plate 403 is fixedly connected to the first nut 100; when the second nut 301 is screwed onto the bolt, the disc 300 is driven to move upward, and the upward movement of the disc 300 squeezes the raised block 201 to expand to both sides, and the raised block 201 is fixedly connected to the upper surface of the steel plate 402. The expansion of the block 201 to both sides will drive the first curved plate 200 to expand to both sides. The first curved plate 200 is made of spring steel and has good elasticity. When the disc 300 moves upward, the bottom of the steel plate 402 will contact and drive the steel plate 402 to move upward. The upward movement of the steel plate 402 will rotate around the rotating shaft 401. The rotation of the steel plate 402 around the rotating shaft 401 will compress the second curved plate 403. The second curved plate 403 is also made of spring steel and has good elasticity. The first curved plate 200 symmetrically arranged on the surface of the first nut 200 can In order to wrap and clamp the disc 300, a raised block 201 is arranged on the inner surface of the lower end of the two first curved plates 200, and the two first curved plates 200 can clamp the disc 300. The raised blocks 201 fixedly arranged on the lower end surfaces of the two first curved plates 200 can play a role in clamping the disc 300. The raised blocks 201 are arc-shaped, and the raised blocks 201 on the surfaces of the two first curved plates 200 can clamp the disc 300 and prevent the disc 300 from sliding downward. To prevent the second nut 301 from loosening downward, the first arc-shaped plates 200 symmetrically arranged on the surface of the first nut 200 can wrap and clamp the disc 300, and the raised blocks 201 fixedly arranged on the lower end surfaces of the two first arc-shaped plates 200 can play a role in clamping the disc 300. The raised blocks 201 are arc-shaped, and the raised blocks 201 on the surfaces of the two first arc-shaped plates 200 can clamp the disc 300 and prevent the disc 300 from sliding downward, thereby preventing the second nut 301 from loosening downward.After the steel plate 402 rotates around the rotating shaft 401, it will fit tightly against the surface of the bolt. The upper end of the steel plate 402 fits tightly against the surface of the bolt to prevent loosening. At the same time, when the steel plate 402 compresses the second arc plate 403, the elastic force of the second arc plate 403 can push the first nut 100 upward and squeeze it, and at the same time push the second nut 301 downward. The upward pushing and squeezing of the first nut 100 and the downward pushing and squeezing of the second nut 301 can make the first nut 100, the second nut 301 and the screw rod fit tightly, so as to avoid the gap between the first nut 100, the second nut 301 and the screw rod from vibrating. The second curved plate 403 uses elastic force to fit the first nut 100, the second nut 301 and the screw rod tightly together, further improving the anti-loosening effect. The steel plate 402 set inside the first nut 100 can rotate around the rotating shaft 401 through the structure set. After the steel plate 402 rotates around the rotating shaft 401, it will fit tightly on the surface of the bolt. The upper end of the steel plate 402 fits tightly on the surface of the bolt to prevent loosening. The second curved plate 403 uses elastic force to fit the first nut 100, the second nut 301 and the screw rod tightly together, further improving the anti-loosening effect. ;

[0036] Preferably, the limiting mechanism 500 includes a circular plate 501, which is tightly fitted with the steel plate 402. The lower end of the circular plate 501 is fixedly connected to a third arc plate 502, and the lower end of the third arc plate 502 is fixedly connected to the second nut 301. The lower end of the circular plate 501 is fixedly connected to a slider 503, and the slider 503 is slidably connected to the slide groove 3001. When the disc 300 moves upward and contacts the bottom end of the steel plate 402, the circular plate 501 at the upper end of the disc 300 is squeezed and moves downward. The circular plate 501 slides into the disc 300, which drives the slider 503 to slide downward in the slide groove 3001. When the circular plate 501 slides into the disc 300, it drives The third curved plate 502 moves downward to bend, and the third curved plate 502 moves downward to bend and will also fit closely to the surface of the bolt, so that the third curved plate 502 can tightly fix the second nut 301 and the bolt together to prevent loosening; when the disc 300 moves upward and contacts the bottom end of the steel plate 402, the steel plate 402 will drive the circular plate 501 to slide into the disc 300, and when the circular plate 501 slides into the disc 300, it will drive the third curved plate 502 to move downward to bend, and the third curved plate 502 moves downward to bend and will also fit closely to the surface of the bolt, so that the third curved plate 502 can tightly fix the second nut 301 and the bolt together to prevent loosening.

[0037] Working principle: When the present invention is used, the first nut 100 is first screwed to a specified position on the bolt, and then the second nut 301 is screwed onto the bolt.

[0038] When the second nut 301 is screwed onto the bolt, the disc 300 will be driven to move upward. The upward movement of the disc 300 will squeeze the protruding block 201 to expand to both sides. The expansion of the protruding block 201 to both sides will drive the first curved plate 200 to expand to both sides. The first curved plate 200 is made of spring steel and has good elasticity. When the disc 300 moves upward, the bottom end of the steel plate 402 will contact and drive the steel plate 402 to move upward. The upward movement of the steel plate 402 will rotate around the rotating shaft 401. The rotation of the steel plate 402 around the rotating shaft 401 will compress the second curved plate 403. The second curved plate 403 is also made of spring steel and has good elasticity. The first curved plates 200 symmetrically arranged on the surface of the first nut 200 can wrap and clamp the disc 300. The protruding blocks 201 are arranged on the inner surfaces of the lower ends of the two first curved plates 200. The two first curved plates 200 can clamp the disc 300. The convex blocks 201 fixedly arranged on the lower end surfaces of the two first curved plates 200 can play a role in clamping the disc 300, and the convex blocks 201 are arc-shaped. The convex blocks 201 on the surfaces of the two first curved plates 200 can clamp the disc 300 and prevent the disc 300 from sliding downward, thereby preventing the disc 300 from sliding downward can prevent the second nut 301 from loosening downward; the first curved plates 200 symmetrically arranged on the surface of the first nut 200 with a structure set up can wrap and clamp the disc 300, and the convex blocks 201 fixedly arranged on the lower end surfaces of the two first curved plates 200 can play a role in clamping the disc 300, and the convex blocks 201 are arc-shaped. The convex blocks 201 on the surfaces of the two first curved plates 200 can clamp the disc 300 and prevent the disc 300 from sliding downward, thereby preventing the second nut 301 from loosening downward.

[0039] After the steel plate 402 rotates around the rotating shaft 401, it will fit tightly against the surface of the bolt. The upper end of the steel plate 402 fits tightly against the surface of the bolt to prevent loosening. At the same time, when the steel plate 402 compresses the second arc plate 403, the elastic force of the second arc plate 403 can push the first nut 100 upward and squeeze it, and at the same time push the second nut 301 downward. The upward pushing and squeezing of the first nut 100 and the downward pushing and squeezing of the second nut 301 can make the first nut 100, the second nut 301 and the screw rod fit tightly, so as to avoid the gap between the first nut 100, the second nut 301 and the screw rod from vibrating. The second curved plate 403 uses elastic force to tightly fit the first nut 100, the second nut 301 and the screw rod together, further improving the anti-loosening effect; the steel plate 402 arranged to rotate inside the first nut 100 can rotate around the rotating shaft 401, and after the steel plate 402 rotates around the rotating shaft 401, it will tightly fit on the surface of the bolt, and the upper end of the steel plate 402 tightly fits on the surface of the bolt to prevent loosening, and the second curved plate 403 uses elastic force to tightly fit the first nut 100, the second nut 301 and the screw rod together, further improving the anti-loosening effect.

[0040] When the disc 300 moves upward and contacts the bottom of the steel plate 402, the disc 501 at the upper end of the disc 300 is squeezed and moves downward. The disc 501 slides into the disc 300, which drives the slide 503 to slide downward in the slide groove 3001. When the disc 501 slides into the disc 300, it drives the third curved plate 502 to move downward and bend. The third curved plate 502 moves downward and bends, and also fits tightly to the surface of the bolt. In this way, the third curved plate 502 can tighten the second nut 300. 01 is tightly fixed to the bolt to prevent loosening; when the disc 300 moves upward and contacts the bottom end of the steel plate 402, the steel plate 402 will drive the circular plate 501 to slide into the disc 300. When the circular plate 501 slides into the disc 300, it will drive the third curved plate 502 to move downward and bend. The third curved plate 502 moves downward and bends and will also fit tightly to the surface of the bolt. In this way, the third curved plate 502 can fix the second nut 301 and the bolt tightly together to prevent loosening.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A combination nut with an anti-loosening function, comprising a first nut (100), characterized in that: Two first arc-shaped plates (200) are symmetrically arranged on the surface of the first nut (100); a disc (300) is bonded to the inner surface of the first arc-shaped plate (200); a bonding mechanism (400) is arranged at the lower end of the first nut (100); and a limiting mechanism (500) is arranged inside the disc (300); An opening (1001) is formed inside the first nut (100); A protruding block (201) is fixedly connected to the surface of the first arc-shaped plate (200); A sliding groove (3001) is provided inside the circular disc (300), and a second nut (301) is fixedly connected to the lower end of the circular disc (300); The fitting mechanism (400) comprises a rotating shaft (401), both ends of the rotating shaft (401) are rotatably connected to the surface of an opening (1001) in the first nut (100), and a steel plate (402) is fixedly connected to the surface of the rotating shaft (401); The fitting mechanism (400) further comprises a second curved plate (403), the upper surface of the steel plate (402) being fixedly connected to the second curved plate (403), and the upper end of the second curved plate (403) being fixedly connected to the first nut (100); The limiting mechanism (500) comprises a circular plate (501), the circular plate (501) is tightly fitted with the steel plate (402), the lower end of the circular plate (501) is fixedly connected to a third arc plate (502), and the lower end of the third arc plate (502) is fixedly connected to the second nut (301).

2. The combination nut with anti-loosening function according to claim 1, characterized in that: The limiting mechanism (500) further comprises a sliding block (503), the lower end of the circular plate (501) being fixedly connected to the sliding block (503), and the sliding block (503) being slidably connected to the sliding groove (3001).

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