Anti-loosening bolt

Abstract

The utility model provides an anti-loosening bolt, which is characterized in that a fixing piece is arranged at one end of a screw rod, an adjusting piece is arranged on the screw rod, the adjusting piece, the screw rod and the fixing piece form a bolt, the adjusting piece comprises a first fixing nut, a reinforcing ring and a second fixing nut which are sequentially arranged on the screw rod, the top of the first fixing nut is provided with a limiting groove, the bottom of the reinforcing ring extends to form a limiting part, and after the first fixing nut, the reinforcing ring and the second fixing nut are sequentially screwed into the screw rod, the second fixing nut presses the limiting part into the limiting groove so that the limiting part can deform, and the reinforcing ring can be fixed to the screw rod. A side face groove is formed in the side wall of the screw rod, a positioning part is arranged on the inner ring face of the reinforcing ring in an extending mode, and the positioning part is matched with the side face groove so that the reinforcing part can be positioned on the screw rod to move, the stability of bolt connection is remarkably improved, and the anti-loosening performance is effectively enhanced.

Description

Technical Field

[0001] This utility model relates to the field of bolt technology, and in particular to an anti-loosening bolt. Background Technology

[0002] Advanced bolts are crucial components in high-end machinery manufacturing, and their importance is self-evident. However, after continuous growth, China's bolt industry has faced the dual challenges of insufficient market demand and international anti-dumping measures in recent years, leading to a decline in export sales. At the same time, market competition is fierce, with small and medium-sized bolt enterprises generally producing ordinary standard parts, lacking core competitiveness, and constrained by fluctuations in raw material and labor costs. Although China's bolt manufacturing technology has approached world-class levels, its products are mainly concentrated in the low-to-mid-range market, while high-end, high-precision, and high-strength bolts still require large-scale imports, with a significant price difference between imports and exports.

[0003] In terms of anti-loosening technology, existing methods mainly include plastic anti-loosening nuts and special wedge-face anti-loosening nuts. While plastic anti-loosening methods can increase the friction between internal and external threads, they are greatly affected by the environment and cannot meet the requirements of use under high-temperature and extremely cold conditions. Special wedge-face anti-loosening nuts, by changing the thread angle, make the normal force applied between the threads form a 60° angle with the bolt axis, thereby greatly increasing the anti-loosening friction and exhibiting superior vibration resistance, wear resistance, shear resistance, and reusability. However, even so, existing anti-loosening technologies still have limitations, especially in complex and variable industrial environments, and more reliable and efficient anti-loosening solutions still need to be explored.

[0004] To address the aforementioned technical problems, this invention provides a fastener applicable to various fields including automobiles, photovoltaic power generation systems, electronic products, machinery, digital products, power equipment, ships, vehicles, water conservancy projects, and chemical experiments. It is particularly suitable for applications requiring high precision, high strength, and excellent anti-loosening performance, such as precision bolts in digital products and miniature bolts in DVDs, cameras, eyeglasses, and watches. Through innovative design, this invention aims to provide a fastener with a high anti-loosening safety factor to meet the needs of various complex environments and promote the further development of the bolt industry. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide an anti-loosening bolt to solve the problems mentioned above in the background art.

[0006] An anti-loosening bolt, comprising:

[0007] 1. An anti-loosening bolt, comprising a threaded rod, characterized in that:

[0008] A fixing member is provided at one end of the screw, and an adjusting member is provided on the screw. The adjusting member, the screw, and the fixing member form a bolt. The adjusting member includes a first fixing nut, a reinforcing ring, and a second fixing nut sequentially arranged on the screw. A limiting groove is formed at the top of the first fixing nut, and a limiting portion extends from the bottom of the reinforcing ring. After the first fixing nut, the reinforcing ring, and the second fixing nut are sequentially screwed into the screw, the second fixing nut presses the limiting portion into the limiting groove, causing the limiting portion to deform. A side groove is formed on the side wall of the screw, and a positioning portion extends from the inner ring surface of the reinforcing ring. The positioning portion is adapted to the side groove so that the reinforcing portion is positioned and moved on the screw.

[0009] Compared to existing technologies, the advantages of this application are as follows: First, the screw is passed through the mounting holes of the two parts to be fixed, ensuring that the fixing part at one end of the screw is tightly against the bottom of one of the parts. Then, the first fixing nut is tightened onto the threaded portion of the screw to press against the top of the other part. Next, a reinforcing ring is placed on the screw, and its positioning part is inserted into the side groove, guiding the reinforcing ring downwards until the limiting part accurately enters the limiting groove. At this point, the second fixing nut is screwed into the screw, applying pressure to the reinforcing ring. As the second fixing nut is tightened, the limiting part is squeezed into the limiting groove and deforms. The partially deformed limiting part fills the gap between the threaded rod and the first fixing nut, thereby enhancing the stability of the first fixing nut on the screw. Finally, the second fixing nut further compresses the first fixing nut, ensuring a more secure connection between the first fixing nut and the screw. In this way, utilizing the synergistic effect of the first fixing nut, the reinforcing ring, and the second fixing nut, the stability of the bolt connection is significantly improved compared to the traditional single-nut design, effectively enhancing the anti-loosening performance.

[0010] Furthermore, a tapered groove is provided at the other end of the screw, and a fixing wedge is installed in the tapered groove to cause deformation at the other end of the screw, wherein the top of the fixing wedge extends out of the tapered groove.

[0011] Furthermore, the fixing wedge has a first through hole, and the other end of the screw has a second through hole. When the fixing wedge is installed in the tapered groove, the first through hole and the second through hole are aligned and a pin is inserted.

[0012] Furthermore, the cross-sections of the fixing wedge and the conical groove are triangular.

[0013] Furthermore, the number of limiting grooves is at least two, and all the limiting grooves are arranged in a ring on the first fixing nut. The number of limiting parts is at least two, and all the limiting parts are arranged in a ring at the bottom of the reinforcing ring. The limiting grooves and the limiting parts correspond one-to-one to reinforce the first fixing nut.

[0014] Furthermore, the dimensions of the limiting groove and the limiting part decrease sequentially from top to bottom.

[0015] Furthermore, the side of the fastener near the screw and the top surface of the reinforcing ring are both hexagonal flange surfaces.

[0016] Furthermore, the screw is also provided with a flat washer, which is disposed between the fixing member and the adjusting member to enhance the coefficient of friction between the adjusting member and the object. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the anti-loosening bolt of this utility model;

[0018] Figure 2 This is an exploded three-dimensional view of the mortar limiting part of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the reinforcing ring of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the first fixing nut of this utility model.

[0021] Explanation of main component symbols: 100, Bolt; 10, Screw; 11, Side groove; 12, Tapered groove; 13, Fixing wedge; 14, First through hole; 15, Second through hole; 16, Pin; 17, Flat washer; 20, Fixing component; 30, Adjusting component; 31, First fixing nut; 311, Limiting groove; 32, Reinforcing ring; 321, Limiting part; 322, Positioning part; 33, Second fixing nut. Detailed Implementation

[0022] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0023] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] Please see Figures 1 to 2 The image shows an anti-loosening bolt 100 according to an embodiment of the present invention, including a screw 10, a fixing member 20 at one end of the screw 10, and an adjusting member 30 on the screw 10. The adjusting member 30, the screw 10, and the fixing member 20 form the bolt 100. The adjusting member 30 includes a first fixing nut 31, a reinforcing ring 32, and a second fixing nut 33 sequentially disposed on the screw 10. The top of the first fixing nut 31 has a limiting groove 311, and the bottom of the reinforcing ring 32 extends... The screw 10 has a limiting part 321. After the first fixing nut 31, the reinforcing ring 32, and the second fixing nut 33 are screwed onto the screw 10 in sequence, the second fixing nut 33 presses the limiting part 321 into the limiting groove 311, so that the limiting part 321 deforms. The side wall of the screw 10 is provided with a side groove 11. The inner ring surface of the reinforcing ring 32 has a positioning part 322 extending from it. The positioning part 322 is adapted to the side groove 11 so that the reinforcing part is positioned and moved on the screw 10.

[0026] Among them, the reinforcing ring 32, the limiting part 321 and the positioning part 322 are all made of rubber, and the size of the limiting part 321 is larger than the size of the limiting groove 311.

[0027] In the specific implementation process, firstly, the screw 10 is passed through the mounting holes of the two parts to be fixed, ensuring that the fixing member 20 at one end of the screw 10 is tightly against the bottom of one of the parts. Then, the first fixing nut 31 is tightened onto the threaded portion of the screw 10 to press against the top of the other part. Next, the reinforcing ring 32 is fitted onto the screw 10, and its positioning part 322 is inserted into the side groove 11, guiding the reinforcing ring 32 downwards until the limiting part 321 accurately enters the limiting groove 311. At this point, the second fixing nut 33 is screwed into the screw 10, applying pressure to the reinforcing ring 32. As the second fixing nut 33 is tightened, the limiting part 321 is squeezed into the limiting groove 311 and deforms. The partially deformed limiting part 321 fills the gap between the screw 10 and the first fixing nut 31, thereby enhancing the stability of the first fixing nut 31 on the screw 10. Finally, the second fixing nut 33 further compresses the first fixing nut 31, ensuring that the first fixing nut 31 is more firmly connected to the screw 10. In this way, by utilizing the synergistic effect of the first fixing nut 31, the reinforcing ring 32, and the second fixing nut 33, the stability of the bolt 100 connection is significantly improved compared to the traditional single nut design, and the anti-loosening performance is effectively enhanced.

[0028] In this embodiment, the depth of the side groove 11 is the thread depth of the screw 10 plus 0.3 mm.

[0029] Please see Figure 3 and Figure 4 To further enhance the stability of the adjusting component 30 on the screw 10, a tapered groove 12 was designed at the other end of the screw 10, and a fixing wedge 13 was installed therein. This fixing wedge 13 causes deformation at the other end of the screw 10, and its top extends slightly beyond the tapered groove 12 (the top extends beyond the tapered groove 12, with a distance of 2mm from the top surface of the screw 10). During installation, the fixing wedge 13 is hammered to firmly embed it into the tapered groove 12. This design not only enhances stability but also facilitates the removal of the fixing wedge 13 for maintenance later.

[0030] To further enhance the stability of the fixing wedge 13 within the tapered groove 12, a first through hole 14 and a second through hole 15 are respectively provided at the other end of both the fixing wedge 13 and the screw 10. When the fixing wedge 13 is installed in place, the first through hole 14 and the second through hole 15 will naturally align, at which point a pin 16 (such as a cotter pin) can be inserted for fixation.

[0031] It is worth noting that the cross-sections of the fixing wedge 13 and the conical groove 12 are both designed with triangles. This shape not only increases the contact area and improves stability, but also makes the structure more compact and robust.

[0032] In this embodiment, to reinforce the first fixing nut 31, at least two limiting grooves 311 are designed, which are arranged in a ring array on the first fixing nut 31. Correspondingly, the bottom of the reinforcing ring 32 is also provided with at least two limiting portions 321, which are arranged in a ring array and correspond one-to-one with the limiting grooves 311. In addition, the dimensions of the limiting grooves 311 and the limiting portions 321 gradually decrease from top to bottom, which helps to enhance the reinforcement effect.

[0033] To increase the coefficient of friction between the fastener 20 and the parts, the side of the fastener 20 closest to the screw 10 is designed as a hexagonal flange. Similarly, to improve the coefficient of friction between the first fixing nut 31 and the second fixing nut 33, the top surface of the reinforcing ring 32 is also designed as a hexagonal flange.

[0034] Furthermore, we have added a flat washer 17 to the screw 10, located between the fixing part 20 and the adjusting part 30. The addition of the flat washer 17 can increase the coefficient of friction between the adjusting part 30 and the object (part), thereby improving the overall stability.

[0035] In summary, the anti-loosening bolt 100 in the above embodiments of this utility model first passes the screw 10 through the mounting holes of the two parts to be fixed, ensuring that the fixing member 20 at one end of the screw 10 is tightly attached to the bottom of one of the parts. Then, the first fixing nut 31 is tightened onto the threaded portion of the screw 10 to press against the top of the other part. Next, the reinforcing ring 32 is fitted onto the screw 10, and its positioning part 322 is inserted into the side groove 11, guiding the reinforcing ring 32 downwards until the limiting part 321 accurately enters the limiting groove 311. At this point, the second fixing nut 33 is screwed into the screw 10, applying pressure to the reinforcing ring 32. As the second fixing nut 33 is tightened, the limiting part 321 is squeezed into the limiting groove 311 and deformed. The partially deformed limiting part 321 fills the gap between the screw 10 and the first fixing nut 31, thereby enhancing the stability of the first fixing nut 31 on the screw 10. Finally, the second fixing nut 33 further compresses the first fixing nut 31, ensuring that the first fixing nut 31 is more firmly connected to the screw 10. In this way, by utilizing the synergistic effect of the first fixing nut 31, the reinforcing ring 32, and the second fixing nut 33, the stability of the bolt 100 connection is significantly improved compared to the traditional single nut design, and the anti-loosening performance is effectively enhanced.

[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An anti-loosening bolt, comprising a threaded rod, characterized in that: A fixing member is provided at one end of the screw, and an adjusting member is provided on the screw. The adjusting member, the screw, and the fixing member form a bolt. The adjusting member includes a first fixing nut, a reinforcing ring, and a second fixing nut sequentially arranged on the screw. A limiting groove is formed at the top of the first fixing nut, and a limiting portion extends from the bottom of the reinforcing ring. After the first fixing nut, the reinforcing ring, and the second fixing nut are sequentially screwed into the screw, the second fixing nut presses the limiting portion into the limiting groove, causing the limiting portion to deform. A side groove is formed on the side wall of the screw, and a positioning portion extends from the inner ring surface of the reinforcing ring. The positioning portion is adapted to the side groove so that the reinforcing ring is positioned and moved on the screw.

2. The anti-loosening bolt according to claim 1, characterized in that, The other end of the screw is provided with a tapered groove, and a fixing wedge is installed in the tapered groove to cause deformation at the other end of the screw, wherein the top of the fixing wedge extends out of the tapered groove.

3. The anti-loosening bolt according to claim 2, characterized in that, The fixing wedge has a first through hole, and the other end of the screw has a second through hole. When the fixing wedge is installed in the tapered groove, the first through hole and the second through hole are aligned and a pin is inserted.

4. The anti-loosening bolt according to claim 2, characterized in that, The cross-sections of the fixed wedge and the conical groove are triangular.

5. The anti-loosening bolt according to claim 1, characterized in that, The number of limiting grooves is at least two, and all the limiting grooves are arranged in a ring on the first fixing nut. The number of limiting parts is at least two, and all the limiting parts are arranged in a ring at the bottom of the reinforcing ring. The limiting grooves and the limiting parts correspond one-to-one to reinforce the first fixing nut.

6. The anti-loosening bolt according to claim 1, characterized in that, The dimensions of the limiting groove and the limiting part decrease sequentially from top to bottom.

7. The anti-loosening bolt according to claim 1, characterized in that, The side of the fastener near the screw and the top surface of the reinforcing ring are both hexagonal flange surfaces.

8. The anti-loosening bolt according to claim 1, characterized in that, The screw is also provided with a flat washer, which is disposed between the fixing member and the adjusting member to enhance the coefficient of friction between the adjusting member and the object.

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