High-adaptability anti-loosening fastener

Abstract

The invention belongs to the technical field of mechanical installation, and particularly relates to a high-adaptability anti-loosening fastener which comprises an embedded nut, internal threads are formed in the upper area in the embedded nut, a bolt is arranged in the embedded nut, threads are arranged on the lower portion of the outer portion of the bolt, and the bolt is in threaded connection with the internal threads of the embedded nut through the threads. A rotating groove is formed in the top end of the pre-embedded nut, a rotating ring is rotatably connected into the rotating groove, a plurality of telescopic blocks are slidably connected into the pre-embedded nut at equal intervals, a plurality of eccentric rotating plates are rotatably connected into the pre-embedded nut, and a plurality of clamping strips are arranged in the pre-embedded nut and located below the internal thread at equal intervals; limiting blocks are arranged on the two sides of the bottom end of the bolt. The eccentric rotating plate can be driven to rotate by rotating the bolt, so that the eccentric rotating plate pushes the telescopic blocks out of the interior of the embedded nut, the multiple telescopic blocks stretch out of the interior of the embedded nut and can support the embedded nut in the mounting hole, and the embedded nut can adapt to the inner diameter of the mounting hole.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical installation, and specifically relates to a highly adaptable anti-loosening fastener. Background Art

[0002] Fasteners are mechanical parts that are frequently used and have a very wide range of application industries. Fasteners are used for fastening connections between two or more parts. Fasteners are also often used in the mechanical industry. Through fasteners, mechanical parts can be installed on mechanical equipment.

[0003] A Chinese patent with the publication number CN115013411B authorizes a highly adaptable anti-loosening fastener, which includes a mating cylinder that rotates around a bolt. The bolt includes a driving head and a stud. A linkage locking mechanism is provided between the driving head and the non-circular limiting head, which enables the two to unlock as the driving block contracts and lock as the driving block extends, so that general external forces cannot cause the fastener to become loose.

[0004] During the use of the above technical solution, it is necessary to install its mating cylinder inside the installation hole, and then screw the bolt into the mating cylinder for fastening. However, the diameters of the installation holes at different positions may vary, resulting in the mating cylinder being unable to be used in an installation hole with a diameter that does not match its outer diameter. In this case, it may be necessary to replace the mating cylinder with a corresponding outer diameter, which affects the installation cost.

[0005] Therefore, the present invention provides a highly adaptable anti-loosening fastener. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A highly adaptable anti-loosening fastener of the present invention includes an embedded nut. An internal thread is provided in the upper region inside the embedded nut. A bolt is provided inside the embedded nut. A thread is provided below the outside of the bolt. The bolt is threadedly connected to the internal thread of the embedded nut through the thread. A rotation groove is provided at the top of the embedded nut. A rotating ring is rotatably connected inside the rotation groove. A plurality of telescopic blocks are slidably connected at equal intervals inside the embedded nut. A plurality of eccentric rotating plates are rotatably connected inside the embedded nut. The eccentric rotating plates are in contact with the inner sides of the telescopic blocks. An adjusting gear is fixed at the top of the eccentric rotating plate. A toothed ring is provided below the inside of the rotating ring. The toothed ring is meshed with the adjusting gear. A plurality of clamping strips are provided at equal intervals below the internal thread inside the embedded nut. Limiting blocks are provided on both sides of the bottom end of the bolt. The clamping blocks on the outside of the limiting blocks can be clamped with the clamping strips. A plurality of locking blocks are provided at equal intervals on the inside of the rotating ring. A plurality of tooth grooves are provided at equal intervals on the outside of the thread. The locking blocks can be clamped with the tooth grooves.

[0008] Preferably, two support plates are arranged at one end of the telescopic block away from the eccentric rotating plate. Anti-slip patterns are provided on one side of the support plate away from the telescopic block. A rotating seat is fixed on one side of the support plate close to the telescopic block. The rotating seat is located at an eccentric position of the support plate and is arranged on one side of the support plate close to the center line of the telescopic block. Two rotating cavities are provided on one side of the telescopic block close to the support plate, and the rotating seat is rotatably connected inside the rotating cavity.

[0009] Preferably, a groove body is provided on one side of the telescopic block close to the support plate, and the groove body is arranged between the two rotating cavities.

[0010] Preferably, a plurality of insertion blocks are fixed on one side of each of the two adjacent support plates. A docking groove is provided between the adjacent insertion blocks. The inner diameter of the docking groove matches the outer diameter of the insertion block, and two adjacent groups of insertion blocks are arranged in a staggered manner.

[0011] Preferably, sliding grooves are provided on both sides of the embedded nut inside the telescopic block. Guide blocks are fixed on both sides of the telescopic block, and the guide blocks are slidably connected inside the sliding grooves.

[0012] Preferably, a metal elastic sheet is fixed on one side of the sliding groove away from the eccentric rotating plate, and one side of the metal elastic sheet is in close contact with the guide block.

[0013] Preferably, a plurality of sliding grooves are provided on the inner side of the rotating ring. Sliders are slidably connected inside the sliding grooves, and a locking block is fixed at one end of the slider.

[0014] Preferably, a second spring is fixed inside the slider, and the other end of the second spring is fixedly connected to the sliding groove of the rotating ring.

[0015] Preferably, both sides of the locking block are provided with slopes at different angles. When the tooth groove rotates clockwise, it contacts the side with a smaller angle, and when the tooth groove rotates counterclockwise, it contacts the other side.

[0016] Preferably, a telescopic cavity is provided inside the bolt. A movable rod is slidably connected inside the telescopic cavity. A push block is fixed at the top end of the movable rod, the bottom end of the movable rod is fixedly connected to the limiting block, and a first spring is fixed on one side of the movable rod close to the center of the telescopic cavity.

[0017] The beneficial effects of the present invention are as follows: 1. For a highly adaptable anti-loosening fastener described in the present invention, by rotating the bolt, the eccentric rotating plate can be driven to rotate, so that the eccentric rotating plate pushes the telescopic block out of the embedded nut. When multiple telescopic blocks extend out of the embedded nut, the embedded nut can be supported inside the installation hole, realizing that the embedded nut can adapt to the inner diameter of the installation hole.

[0018] 2. For a highly adaptable anti-loosening fastener according to the present invention, the push block is pressed into the inside of the telescopic cavity through the sleeve of the installation tool, so that the limit block is automatically received during the installation process. After the installation is completed, the elastic force of the first spring causes the limit block to automatically extend from the inside of the telescopic cavity, enabling the limit block to automatically engage with the clamping strip to achieve automatic anti-loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 is a perspective view of the present invention; Figure 2 is a schematic diagram of the separation of the embedded nut and the bolt; Figure 3 is a schematic diagram of the internal structure of the bolt in the present invention; Figure 4 is Figure 3 a partial enlarged view of part A in Figure 5 is a schematic diagram of the internal structure of the embedded nut in the present invention; Figure 6 is a schematic diagram of the rotating groove structure in the present invention; Figure 7 is a schematic diagram of the rotating ring structure in the present invention; Figure 8 is a top view schematic diagram of the locking block in the present invention; Figure 9 is a schematic diagram of the clamping strip structure in the present invention; Figure 10 is a schematic diagram of the telescopic block structure in the present invention; Figure 11 is a schematic diagram of the eccentric rotating plate structure in the present invention; Figure 12 is a schematic diagram of the support plate structure in the present invention.

[0021] In the figure: 1. Embedded nut; 11. Rotating groove; 12. Clamping strip; 2. Bolt; 21. Thread; 211. Tooth groove; 22. Telescopic cavity; 23. Moving rod; 231. Push block; 232. Limit block; 24. First spring; 3. Rotating ring; 31. Telescopic block; 311. Guide block; 312. Metal elastic sheet; 313. Rotating cavity; 32. Support plate; 321. Rotating seat; 322. Insert block; 323. Docking groove; 33. Eccentric rotating plate; 331. Adjusting gear; 34. Tooth ring; 341. Slide block; 342. Locking block; 343. Second spring. DETAILED DESCRIPTION OF THE INVENTION

[0022] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0023] As Figures 1 to 11 shown, a highly adaptable anti-loosening fastener according to an embodiment of the present invention includes an embedded nut 1. An internal thread is provided in the upper region inside the embedded nut 1. A bolt 2 is arranged inside the embedded nut 1. A thread 21 is provided below the outside of the bolt 2. The bolt 2 is threadedly connected to the internal thread of the embedded nut 1 through the thread 21. A rotation groove 11 is provided at the top end of the embedded nut 1. A rotating ring 3 is rotatably connected inside the rotation groove 11. A plurality of telescopic blocks 31 are slidably connected at equal intervals inside the embedded nut 1. A plurality of eccentric rotating plates 33 are rotatably connected inside the embedded nut 1. The eccentric rotating plates 33 are in close contact with the inner sides of the telescopic blocks 31. An adjusting gear 331 is fixed to the top end of the eccentric rotating plate 33. A toothed ring 34 is provided below the inside of the rotating ring 3. The toothed ring 34 is meshed and connected with the adjusting gear 331. A plurality of clamping strips 12 are arranged at equal intervals below the internal thread inside the embedded nut 1. Limiting blocks 232 are provided on both sides of the bottom end of the bolt 2. The clamping blocks on the outside of the limiting blocks 232 can be clamped with the clamping strips 12. A plurality of locking blocks 342 are arranged at equal intervals on the inside of the rotating ring 3. A plurality of tooth grooves 211 are provided at equal intervals on the outside of the thread 21. The locking blocks 342 can be clamped with the tooth grooves 211; Before some large mechanical equipment is used, it is necessary to install parts on the large mechanical equipment through relatively large fasteners. When installing, the embedded nut 1 needs to be fixed inside the installation hole first. At this time, the embedded nut 1 is placed into the installation hole of the first installation part. However, the diameters of the installation holes at different positions of the equipment are different. To solve this problem, it is necessary to adjust the outer diameter of the embedded nut 1. At this time, turn the rotating ring 3 clockwise to rotate inside the rotating groove 11. At this time, the rotating ring 3 drives the toothed ring 34 to rotate. When the toothed ring 34 rotates, it can drive the adjusting gear 331 to rotate. The adjusting gear 331 drives the eccentric rotating plate 33 to rotate clockwise. At this time, when the eccentric rotating plate 33 rotates, the eccentric part rotates and pushes the telescopic block 31. At this time, the telescopic block 31 extends out from the inside of the embedded nut 1, and multiple telescopic blocks 31 will extend out synchronously. At this time, the embedded nut 1 can be automatically corrected to the center position of the installation hole. At the same time, multiple telescopic blocks 31 can support on the inner wall of the installation hole. At this time, the embedded nut 1 can be fixed inside the installation hole. Then, align the docking hole of the second installation part with the middle hole of the embedded nut 1. After alignment, pass the bolt 2 through the docking hole of the second installation part. After passing the bolt 2 through the rotating ring 3, it contacts the inner wall of the embedded nut 1. Subsequently, use the socket of the installation tool to turn the bolt 2 clockwise, which can drive the thread 21 to rotate clockwise. At this time, the thread 21 can slide into the internal thread groove of the embedded nut 1. At this time, the bolt 2 can pull the second installation part to be close to the first connection part. At this time, the bolt 2 and the embedded nut 1 can tightly connect the two installation parts. After tightening, to prevent loosening during use, the limiting block 232 inside the bolt 2 extends out and engages with the clamping bar 12 inside the embedded nut 1. At this time, the bolt 2 and the embedded nut 1 can be fixed. The length of the clamping bar 12 is set to be longer, so that when the thickness of the installation position of the second installation part is thicker, the limiting block 232 can also engage with the clamping bar 12. When the bolt 2 is screwed into the inside of the embedded nut 1, the tooth groove 211 opened on the outside of the thread 21 will engage with the locking block 342. Then, during the rotation of the bolt 2, the tooth groove 211 drives the locking block 342 to rotate. At this time, the locking block 342 can drive the rotating ring 3 to continue to rotate clockwise, which can play a role in tightening the rotating ring 3, so that the telescopic block 31 supports more stably inside the installation hole.

[0024] As Figures 1 to 12 shown, two support plates 32 are provided at one end of the telescopic block 31 away from the eccentric rotating plate 33. Anti-slip patterns are provided on the side of the support plate 32 away from the telescopic block 31. A rotating seat 321 is fixed on the side of the support plate 32 close to the telescopic block 31. The rotating seat 321 is located at an eccentric position of the support plate 32. The rotating seat 321 is arranged on the side of the support plate 32 close to the center line of the telescopic block 31. Two rotating cavities 313 are provided on the side of the telescopic block 31 close to the support plate 32. The rotating seat 321 is rotatably connected inside the rotating cavity 313; During use, there are various forms of mounting holes. Among them, there are long strip-shaped mounting holes with straight edges on both sides. In this case, when the telescopic block 31 is supported in the straight-edge holes, instability may occur. Therefore, two support plates 32 are provided on the outer side of the telescopic block 31. When the telescopic block 31 is pushed towards the straight edge of the mounting hole, the intersection surface of the two support plates 32 will first contact the straight edge. Then, under the thrust of the telescopic block 31 and the supporting action of the straight edge on the support plate 32, the support plate 32 is pushed. At this time, the rotating seat 321 rotates inside the rotating cavity 313, and the support plate 32 rotates towards the middle of the telescopic block 31 with the axis of the rotating seat 321 as the base point. At this time, the two support plates 32 have more contact points with the straight edge of the mounting hole, and the fixation is more stable. At the same time, the support plate 32 can adaptively adjust the angle based on this principle, which is convenient for fixing in mounting holes with different apertures.

[0025] As Figures 10 to 12 shown, a groove is provided on the side of the telescopic block 31 close to the support plate 32. The groove is arranged between the two rotating cavities 313; Interference will occur between the support plate 32 and the telescopic block 31 when the support plate 32 rotates. Therefore, a groove is provided on one side of the telescopic block 31, and the groove can be used to support the rotation of the support plate 32.

[0026] As Figures 10 to 12 shown, a plurality of insertion blocks 322 are fixed on the adjacent sides of the two support plates 32. A docking groove 323 is provided between the adjacent insertion blocks 322. The inner diameter of the docking groove 323 matches the outer diameter of the insertion block 322, and the adjacent two groups of insertion blocks 322 are arranged in a staggered manner; Interference will occur between the two support plates 32 when they rotate. Therefore, the insertion block 322 and the docking groove 323 are provided on one side of the support plate 32. When the support plate 32 rotates, the insertion block 322 will insert into the inside of the docking groove 323. At this time, interference between the two support plates 32 can be avoided. At the same time, when the insertion block 322 is inserted into the inside of the docking groove 323, the two support plates 32 can be longitudinally connected together, making it more stable during use.

[0027] As Figures 1 to 11 shown, chutes are provided on both sides of the telescopic block 31 inside the embedded nut 1. Guide blocks 311 are fixed on both sides of the telescopic block 31, and the guide blocks 311 are slidably connected inside the chutes; When the telescopic block 31 extends, it can drive the guide block 311 to slide inside the chute of the embedded nut 1. At this time, the guide block 311 can limit the telescopic block 31, preventing the telescopic block 31 from falling off from the inside of the embedded nut 1.

[0028] As Figures 9 to 11 shown, a metal elastic sheet 312 is fixed on the side of the chute away from the eccentric rotating plate 33, and one side of the metal elastic sheet 312 is closely attached to the guide block 311; During installation, the guiding block 311 presses the metal elastic piece 312 inside the sliding groove. When it is necessary to disassemble the embedded nut 1, the swivel ring 3 rotates counterclockwise to drive the eccentric rotating plate 33 to rotate counterclockwise. At this time, the elastic force of the metal elastic piece 312 can push the guiding block 311 to drive the telescopic block 31 to automatically reset.

[0029] As Figures 1 to 8 shown, a plurality of sliding grooves are provided inside the inner side of the swivel ring 3, and a slider 341 is slidably connected inside the sliding groove. One end of the slider 341 is fixed with a locking block 342; The slider 341 can conduct force to the swivel ring 3 when the locking block 342 is toggled, facilitating locking the swivel ring 3.

[0030] As Figures 7 to 8 shown, a second spring 343 is fixed inside the slider 341, and the other end of the second spring 343 is fixedly connected to the sliding groove of the swivel ring 3; When the locking block 342 is driven, it will drive the swivel ring 3 to rotate through the slider 341. When the swivel ring 3 is tightened and cannot rotate further, at this time the bolt 2 needs to continue to rotate. At this time, the edge of the tooth groove 211 will continue to push the edge of the locking block 342. At this time, the thrust of the tooth groove 211 is greater than the friction between the slider 341 and the swivel ring 3 and the elastic force of the second spring 343. Under the guidance of the inclined surface on one side of the locking block 342, the locking block 342 can push the slider 341 into the inside of the swivel ring 3. At this time, the locking block 342 is separated from the tooth groove 211, so that the locking block 342 will not affect the normal rotation of the bolt 2.

[0031] As Figure 8 shown, both sides of the locking block 342 are provided with slopes at different angles. When the tooth groove 211 rotates clockwise, it contacts the side with a smaller angle, and when the tooth groove 211 rotates counterclockwise, it contacts the other side; During use, the swivel ring 3 may rotate counterclockwise due to external vibration, which may cause the telescopic block 31 to be driven and loosen between the installation hole. Therefore, when the swivel ring 3 rotates counterclockwise, the locking block 342 will slide into the inside of the tooth groove 211. At this time, the steeper slope of the locking block 342 will contact the inner wall of the tooth groove 211. At this time, the friction between the locking block 342 and the inner side of the tooth groove 211 is relatively large. At the same time, under the action of the friction between the slider 341 and the swivel ring 3 and the elastic force of the second spring 343, the swivel ring 3 can be fixed, and the swivel ring 3 can be fixed to prevent loosening during use.

[0032] As Figures 1 to 4 shown, a telescopic cavity 22 is provided inside the bolt 2, a movable rod 23 is slidably connected inside the telescopic cavity 22, a push block 231 is fixed at the top of the movable rod 23, a limiting block 232 is fixed at the bottom of the movable rod 23, and a first spring 24 is fixed on one side of the movable rod 23 close to the center of the telescopic cavity 22; During the installation process, the sleeve of the installation tool needs to be sleeved on the top of the bolt 2. When the sleeve is sleeved on the top of the bolt 2, the edge of the sleeve will push the push block 231 into the interior of the telescopic cavity 22. At this time, the push block 231 will bring the limit block 232 into the interior of the telescopic cavity 22 through the movable rod 23. At this time, the automatic storage of the limit block 232 during the installation process can be realized. When the installation is completed and the sleeve is separated from the bolt 2, the elastic force of the first spring 24 will push the movable rod 23 to drive the limit block 232 to extend from the interior of the telescopic cavity 22, which can realize the automatic locking of the bolt 2 and the embedded nut 1 after installation, so as to achieve the anti-loosening function. The components inside the fastener are all made of alloy steel, which can be more stable during use.

[0033] 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 by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A highly adaptable anti-loosening fastener, characterized in that: The present invention comprises an embedded nut, an internal thread is provided in the upper area inside the embedded nut, a bolt is arranged inside the embedded nut, a thread is arranged below the outside of the bolt, the bolt is threadedly connected to the internal thread of the embedded nut through the thread, a rotating groove is provided at the top of the embedded nut, a swivel is rotatably connected inside the rotating groove, a plurality of telescopic blocks are slidably connected inside the embedded nut at equal intervals, a plurality of eccentric rotating plates are rotatably connected inside the embedded nut, the eccentric rotating plates are tightly attached to the inner side of the telescopic block, an adjusting gear is fixed on the top of the eccentric rotating plate, a gear ring is provided below the inner side of the swivel, the gear ring is meshed with the adjusting gear, a plurality of clip strips are arranged at equal intervals inside the embedded nut below the internal thread, limiting blocks are provided on both sides of the bottom end of the bolt, the clip blocks outside the limiting block can be engaged with the clip strips, a plurality of locking blocks are arranged at equal intervals on the inner side of the swivel, a plurality of tooth grooves are provided at equal intervals on the outer side of the thread, and the locking blocks can be engaged with the tooth grooves.

2. A highly adaptable anti-loosening fastener according to claim 1, characterized in that: Two support plates are arranged at one end of the telescopic block away from the eccentric rotating plate, and anti-slip grooves are provided on the side of the support plate away from the telescopic block. A rotating seat is fixed on the side of the support plate close to the telescopic block, and the rotating seat is in an eccentric position of the support plate. The rotating seat is arranged on the side of the support plate close to the center line of the telescopic block, and two rotating cavities are provided on the side of the telescopic block close to the support plate, and the rotating seat is rotatably connected to the inside of the rotating cavity.

3. A highly adaptable anti-loosening fastener according to claim 2, characterized in that: A slot body is provided on one side of the telescopic block close to the supporting plate, and the slot body is arranged between the two rotating chambers.

4. A highly adaptable anti-loosening fastener according to claim 3, characterized in that: A plurality of plug blocks are fixed on adjacent sides of the two support plates, and docking grooves are arranged between adjacent plug blocks. The inner diameter of the docking groove matches the outer diameter of the plug block, and two adjacent groups of plug blocks are arranged in a staggered manner.

5. The highly adaptable anti-loosening fastener according to claim 1, characterized in that: Slide grooves are provided inside the embedded nut at both sides of the telescopic block, and guide blocks are fixed on both sides of the telescopic block, and the guide blocks are slidably connected inside the slide grooves.

6. A highly adaptable anti-loosening fastener according to claim 5, characterized in that: A metal spring is fixed on one side of the slide groove away from the eccentric rotating plate, and one side of the metal spring is pressed against the guide block.

7. The highly adaptable anti-loosening fastener according to claim 1, characterized in that: A plurality of slide grooves are provided on the inner side of the swivel, a slider is slidably connected inside the slide groove, and a locking block is fixed at one end of the slider.

8. The highly adaptable anti-loosening fastener according to claim 7, characterized in that: A second spring is fixed inside the sliding block, and the other end of the second spring is fixedly connected to the sliding groove of the rotating ring.

9. A highly adaptable anti-loosening fastener according to claim 8, characterized in that: The two sides of the locking block are arranged with slopes of different angles. When the tooth groove rotates clockwise, it contacts the side with the smaller angle, and when the tooth groove rotates counterclockwise, it contacts the other side.

10. The highly adaptable anti-loosening fastener according to claim 1, characterized in that: A telescopic cavity is provided inside the bolt, a movable rod is slidably connected inside the telescopic cavity, a push block is fixed to the top of the movable rod, the bottom of the movable rod is fixedly connected to the limit block, and a first spring is fixed to one side of the movable rod close to the center of the telescopic cavity.

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