Integrated anti-loosening self-locking bolt

Abstract

The utility model relates to the technical field of fasteners, and discloses an integrated anti-loosening self-locking bolt which comprises a stud, an external thread is arranged on the outer wall of the stud, an inner hole is formed in the top of the stud, sliding holes are formed in the periphery of the outer wall of the stud, the inner wall of the stud is in threaded connection with a push block, an insertion hole is formed in the top of the push block, and the insertion hole is connected with the stud. A circular truncated cone is fixedly connected to the bottom of the push block, sliding blocks are slidably connected to the inner walls of the multiple sliding holes, clamping cones are fixedly connected to the outer walls of the multiple sliding blocks, a nut is fixedly connected to the top of the stud, and an insertion plate is slidably connected to the outer side of the insertion hole. According to the anti-loosening self-locking bolt, through structural cooperation of the inserting plate, the pushing block, the circular truncated cone, the sliding block and the clamping cone, the clamping cone can slide out of the sliding hole to penetrate into the connecting piece after the stud is preliminarily fixed, the anchoring force between the bolt and the connecting piece is enhanced, and the excellent anti-loosening self-locking effect is achieved.

Description

Technical Field

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

[0002] In modern mechanical engineering and various industrial manufacturing fields, self-locking bolts play an extremely important role as a key connecting element. A self-locking bolt is a special bolt that can maintain its tightness after being tightened by its own structural characteristics and is not easily loosened by external vibration, impact or other external forces.

[0003] Compared to ordinary bolts that rely solely on thread friction to maintain tightness, self-locking bolts, through their unique structural design, provide additional assurance for connection stability. In many scenarios, using ordinary bolts to connect various components can lead to loosening due to vibration, which can affect component performance and even cause safety issues. However, the application of self-locking bolts can ensure that engine components remain tightly connected even under long-term high-intensity vibration environments, ensuring stable operation of the equipment.

[0004] While existing self-locking bolts can solve some loosening problems, their thread friction is insufficient. The current solution is to add spring washers to maintain thread friction and prevent loosening. However, spring washers are subject to complex stresses over a long period of time, and their elasticity gradually weakens. Under strong vibrations or impacts, they are unable to continuously provide pressure, resulting in a decrease in anchoring force and poor anti-loosening effect. Therefore, an integrated anti-loosening self-locking bolt is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an integrated anti-loosening self-locking bolt, which aims to improve the problems of reduced anchoring force and poor anti-loosening effect in the prior art.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: an integrated anti-loosening self-locking bolt, comprising a stud, an external thread on the outer wall of the stud, an inner hole at the top of the stud, sliding holes around the outer wall of the stud, a push block threadedly connected to the inner wall of the stud, an insertion hole at the top of the push block, a frustum fixedly connected to the bottom of the push block, sliders slidably connected to the inner walls of multiple sliding holes, a retaining cone fixedly connected to the outer walls of multiple sliders, a nut fixedly connected to the top of the stud, an insert plate slidably connected to the outer side of the insertion hole, and a check mechanism provided on the outer wall of the stud to prevent the nut from rotating.

[0007] As a further description of the above technical solution:

[0008] The check valve mechanism includes a pressure plate, the inner wall of which is slidably connected to the outer wall of the stud. A groove is provided at the bottom of the pressure plate, and an elastic anti-slip ring is fixedly connected to the inner wall of the groove. Multiple toothed grooves are provided at the top of the pressure plate, and multiple anti-slip teeth are fixedly connected to the bottom of the nut.

[0009] As a further description of the above technical solution:

[0010] The top of the insert plate is fixedly connected to a handle, and the top of the nut has a through hole.

[0011] As a further description of the above technical solution:

[0012] The diameter of the through hole is larger than the diameter of the beveled edge at the top of the nut, and a cross groove is provided at the top of the nut.

[0013] As a further description of the above technical solution:

[0014] The top of the nut has a hexagonal groove, and the outer wall of the nut is fixedly connected with multiple anti-slip patterns.

[0015] As a further description of the above technical solution:

[0016] The bottom of the stud is threaded with a nut, and the top of the nut has an inner groove.

[0017] As a further description of the above technical solution:

[0018] A rubber ring is fixedly connected to the inner wall of the inner groove, and multiple anti-slip grooves are provided on the outer wall of the nut.

[0019] As a further description of the above technical solution:

[0020] The bottom end of the stud is sharpened, and the external thread has a trapezoidal tooth profile.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, through the structural coordination of the insert plate, push block, frustum, slider and clasp, the clasp can slide out from the sliding hole and insert into the connector after the stud is initially fixed, which enhances the anchoring force between the bolt and the connector and achieves an excellent anti-loosening self-locking effect. At the same time, the diverse slot design on the top of the nut makes it easy to select a variety of operating tools and rotate the nut to tighten the stud.

[0023] 2. In this utility model, the special structural design of the anti-slip teeth at the bottom of the nut and the toothed groove at the top of the pressure plate allows them to mesh with each other when the nut is rotated and pressed down, forming a one-way check-back effect. This effectively prevents the stud from rotating in the opposite direction due to external force. The elastic anti-slip ring enhances the friction between the pressure plate and the stud, further stabilizing the check-back effect and significantly improving the stability and reliability of the bolt connection under complex working conditions, greatly reducing the risk of loosening. Attached Figure Description

[0024] Figure 1 This is a perspective view of the integrated anti-loosening self-locking bolt proposed in this utility model;

[0025] Figure 2 This is a cross-sectional view of the stud of the integrated anti-loosening self-locking bolt proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the nut structure of the integrated anti-loosening self-locking bolt proposed in this utility model;

[0027] Figure 4 This is an exploded view of the anti-loosening self-locking bolt check mechanism proposed in this utility model;

[0028] Figure 5 This is a split view of the nut of the integrated anti-loosening self-locking bolt proposed in this utility model.

[0029] Legend:

[0030] 1. Stud; 2. Check valve; 201. Pressure plate; 202. Ring groove; 203. Elastic anti-slip ring; 204. Tooth groove; 205. Anti-slip tooth; 3. External thread; 4. Inner hole; 5. Sliding hole; 6. Push block; 7. Insertion hole; 8. Frustum; 9. Sliding block; 10. Taper; 11. Nut; 12. Insert plate; 13. Tightening handle; 14. Through hole; 15. Cross groove; 16. Hexagonal groove; 17. Anti-slip texture; 18. Nut; 19. Inner groove; 20. Rubber ring; 21. Anti-slip groove. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] See attached document Figure 1 Appendix Figure 2 and attached Figure 3This utility model provides an embodiment of an integrated anti-loosening self-locking bolt, including a stud 1. The bottom end of the stud 1 is sharpened for easy alignment with the parts to be connected. The outer wall of the stud 1 has an external thread 3 with a trapezoidal tooth profile. Compared with ordinary threads, the trapezoidal tooth profile has better load-bearing capacity and self-locking performance, making the stud 1 more stable when screwed with the internal thread of the connecting part. The top of the stud 1 has an inner hole 4 to provide operating space for the insert plate 12. The outer wall of the stud 1 has sliding holes 5 around it to provide a track for the sliding of the slider 9. The inner wall of the stud 1 is threaded with a push block 6. Rotating the push block 6 can realize its movement along the axial direction of the stud 1. The top of the push block 6 has an insertion hole 7 to facilitate the insertion of the insert plate 12 to drive the push block 6 to rotate. The bottom of the push block 6 is fixedly connected to a frustum 8. When the frustum 8 moves down with the push block 6, it is used to push the slider 9. The inner walls of the multiple sliding holes 5 are slidably connected to sliders 9, and the sliders 9 slide within the sliding holes 5. The bolt is driven by the frustum 8. The outer walls of multiple sliders 9 are fixedly connected with cones 10. The cones 10 move with the sliders 9 and eventually slide out of the sliding hole 5 and insert into the connector to enhance the anchoring force between the bolt and the connector. The top of the stud 1 is fixedly connected with a nut 11, which is used to initially fix the stud 1 and provide a point of force for subsequent operations. The top of the nut 11 has a through hole 14. The diameter of the through hole 14 is larger than the diameter of the top bevel of the nut 11, which facilitates the insertion of the insert plate 12 and leaves enough space for the rotation of the insert plate 12. The top of the nut 11 has a cross groove 15 and a hexagonal groove 16, which are adapted to cross screwdrivers and hex wrenches to facilitate the rotation of the nut 11. The outside of the insertion hole 7 is slidably connected with the insert plate 12. The insert plate 12 is used to insert into the insertion hole 7 to drive the push block 6 to rotate. The top of the insert plate 12 is fixedly connected with a handle 13, which is convenient for the operator to hold and rotate the insert plate 12. The outer wall of the stud 1 is provided with a check mechanism 2, which is used to prevent the nut 11 from rotating.

[0033] Specifically, in use, first align the bottom end of the stud 1 with the component to be connected. Then, use a Phillips screwdriver to insert into the Phillips head slot 15 on the top of the nut 11, or use a hex wrench to align with the hexagonal slot 16. Rotate the nut 11, and the stud 1, through the interaction between the external thread 3 on its outer wall and the internal thread of the connector, will screw into the connector. Continue rotating until the stud 1 reaches the preset suitable position, completing the initial fixation. Afterward, insert the insert plate 12 through the through hole 14 on the top of the nut 11, through the inner hole 4 on the top of the stud 1, and into the insertion hole 7 on the top of the push block 6. The operator holds the top handle 13 of the insert plate 12 and rotates it, which drives the insert plate 12 and causes the push block 6 to rotate. Since the push block 6 is threadedly connected to the inner wall of the stud 1, when it rotates, the push block 6 moves down along the axial direction of the stud 1, and the truncated cone 8 fixed at its bottom descends synchronously. During the descent of the truncated cone 8, its inclined surface contacts the inclined side of the slider 9 to generate a thrust, which pushes the slider 9 to slide away from the center of the stud 1 in the sliding hole 5, so that the snap cone 10 connected to the outer wall of the slider 9 slides out of the sliding hole 5 and inserts into the connector, thereby enhancing the anchoring force between the bolt and the connector.

[0034] See attached document Figure 3 and attached Figure 4 The anti-return mechanism 2 includes a pressure plate 201, the inner wall of which is slidably connected to the outer wall of the stud 1. As the stud 1 rotates, the distance between the pressure plate 201 and the nut 11 changes. A groove 202 is provided at the bottom of the pressure plate 201 for installing an elastic anti-slip ring 203. The elastic anti-slip ring 203 is fixedly connected to the inner wall of the groove 202. The elastic anti-slip ring 203 can enhance the friction between the pressure plate 201 and the stud 1 and stabilize the anti-return effect. Multiple toothed grooves 204 are provided at the top of the pressure plate 201, which cooperate with the anti-slip teeth 205 at the bottom of the nut 11 to achieve a one-way anti-return function. Multiple anti-slip teeth 205 are fixedly connected to the bottom of the nut 11. During the rotation and pressing of the nut 11, the anti-slip teeth 205 gradually approach and embed into the toothed grooves 204 at the top of the pressure plate 201. The two bite together to form a one-way anti-return effect, preventing the stud 1 from rotating in the opposite direction due to external force.

[0035] Specifically, after the stud 1 is initially fixed, the nut 11 continues to rotate and press down. At this time, the multiple anti-slip teeth 205 fixed at the bottom of the nut 11 gradually approach the multiple toothed grooves 204 opened at the top of the pressure plate 201. As the nut 11 rotates further, the anti-slip teeth 205 are embedded in the toothed grooves 204. The special structural design of the two makes them mesh with each other, forming a one-way anti-reverse effect. If the stud 1 has a tendency to rotate in the opposite direction due to external force, the meshing of the anti-slip teeth 205 and the toothed grooves 204 will prevent the pressure plate 201 from rotating in the opposite direction, thereby limiting the stud 1 from reversing and effectively preventing loosening. At the same time, the elastic anti-slip ring 203 fixed on the outside of the bottom groove 202 of the pressure plate 201 enhances the friction between the pressure plate 201 and the stud 1, and helps to stabilize the anti-reverse effect.

[0036] See attached document Figure 1 Appendix Figure 3 and attached Figure 5 The outer wall of the nut 11 is fixedly connected with multiple anti-slip grooves 17. The anti-slip grooves 17 can increase the friction between the operator's hand and the nut 11, making it easier to rotate the nut 11 more stably. The bottom of the stud 1 is threadedly connected with a nut 18. The nut 18 is used to further tighten the stud 1 and prevent it from loosening from the bottom. The top of the nut 18 has an inner groove 19. The inner groove 19 is used to install a rubber ring 20. The inner wall of the inner groove 19 is fixedly connected with a rubber ring 20. The rubber ring 20 can fill the gap between the bottom of the stud 1 and the nut 18, enhancing the sealing and anti-loosening effect. The outer wall of the nut 18 has multiple anti-slip grooves 21. The anti-slip grooves 21 also increase the friction between the nut 18 and the operating tool or the operator's hand, making it easy to tighten or loosen the nut 18.

[0037] Specifically, the anti-slip texture 17 on the outer wall of the nut 11 greatly increases the friction between the operator's hand and the nut 11, making the rotation of the nut 11 more stable and avoiding operational errors due to slippage, thus ensuring a smooth installation process. The nut 18 at the bottom of the stud 1 plays a crucial dual-tightening role, further securing the stud 1 and effectively preventing it from loosening from the bottom, thus enhancing the overall connection stability. The rubber ring 20 on the outer side of the inner groove 19 at the top of the nut 18 not only fills the gap between the bottom of the stud 1 and the nut 18, providing a good sealing effect, but also enhances the anti-loosening effect with its own elasticity. The anti-slip groove 21 on the outer wall of the nut 18 provides a better point of force application for the operator or operating tools, making it easier to tighten or loosen the nut 18 and improving the ease of use.

[0038] Working principle: First, utilizing the sharp bottom of the stud 1, it is easily aligned with the component to be connected. Then, the operator uses a Phillips screwdriver with the Phillips head slot 15 on the top of the nut 11, or a hex wrench with the hexagonal head slot 16, to begin rotating the nut 11. The nut 11 is fixedly connected to the stud 1. As the nut 11 rotates, the stud 1, through the interaction of its external thread 3 and the internal thread on the connector, screws into the connector. Continuing to rotate the nut 11, until the stud 1 reaches the pre-set appropriate position on the connector, the stud 1 is initially fixed. After the stud 1 is initially fixed, the insert plate 12 is inserted from the top of the nut 11, passing through the through hole 14 and the inner hole 4, and then inserted into the insertion hole 7 on the top of the push block 6. The operator holds the handle 13 on the top of the insert plate 12 and starts to turn it. The handle 13 drives the insert plate 12, which in turn drives the push block 6 to rotate. Because the push block 6 is threadedly connected to the inner wall of the stud 1, the rotating push block 6 moves down along the axial direction of the stud 1. The truncated cone 8 fixedly connected to the bottom of the push block 6 descends synchronously. During the descent of the truncated cone 8, the inclined surface of the push block 6 gradually contacts the inclined side of the slider 9 and generates a thrust. As the truncated cone 8 continues to descend, this thrust increases continuously, pushing the slider 9 to slide away from the center of the stud 1 in the sliding hole 5. The clasp 10 connected to the outer wall of the slider 9 also moves accordingly and eventually slides out of the sliding hole 5 and inserts into the connector, enhancing the anchoring force between the bolt and the connector.

[0039] Furthermore, after the stud 1 is initially fixed, as the nut 11 continues to rotate and press down, the multiple anti-slip teeth 205 fixed at the bottom of the nut 11 gradually approach the multiple toothed grooves 204 opened at the top of the pressure plate 201. As the nut 11 rotates further, the anti-slip teeth 205 are embedded in the toothed grooves 204. The special structural design of the anti-slip teeth 205 and the toothed grooves 204 makes them mesh with each other, forming a one-way anti-reverse effect. If the stud 1 has a tendency to rotate in the opposite direction due to external force, the meshing of the anti-slip teeth 205 and the toothed grooves 204 will prevent the pressure plate 201 from rotating in the opposite direction, thereby limiting the stud 1 from reversing and effectively preventing loosening. At the same time, the elastic anti-slip ring 203 also plays an auxiliary role, enhancing the friction between the pressure plate 201 and the stud 1 and stabilizing the anti-reverse effect.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An integrated anti-loosening self-locking bolt comprising a stud (1), characterized in that: The outer wall of the stud (1) is provided with external threads (3), the top of the stud (1) is provided with an inner hole (4), the outer wall of the stud (1) is provided with sliding holes (5) around, the inner wall of the stud (1) is threadedly connected with a push block (6), the top of the push block (6) is provided with a jack hole (7), the bottom of the push block (6) is fixedly connected with a circular table (8), the inner walls of the plurality of sliding holes (5) are all slidably connected with sliding blocks (9), the outer walls of the plurality of sliding blocks (9) are all fixedly connected with clamping cones (10), the top of the stud (1) is fixedly connected with a nut (11), the outer side of the jack hole (7) is slidably connected with a jack plate (12), the outer wall of the stud (1) is provided with a check mechanism (2), and the check mechanism (2) is used to prevent the nut (11) from rotating.

2. The integrated anti-loosening self-locking bolt according to claim 1, characterized in that: The check mechanism (2) comprises a pressing sheet (201), the inner wall of the pressing sheet (201) is slidably connected to the outer wall of the stud (1), the bottom of the pressing sheet (201) is provided with a ring groove (202), the inner wall of the ring groove (202) is fixedly connected with an elastic anti-skid ring (203), the top of the pressing sheet (201) is provided with a plurality of tooth grooves (204), and the bottom of the nut (11) is fixedly connected with a plurality of anti-skid teeth (205).

3. The integrated anti-loosening self-locking bolt according to claim 1, characterized in that: The top of the jack plate (12) is fixedly connected with a twisting handle (13), and the top of the nut (11) is provided with a through hole (14).

4. The integrated anti-loosening self-locking bolt according to claim 3, characterized in that: The diameter of the through hole (14) is greater than the diameter of the top bevel of the nut (11), and the top of the nut (11) is provided with a cross groove (15).

5. The integrated anti-loosening self-locking bolt according to claim 1, characterized in that: The top of the nut (11) is provided with a hexagonal groove (16), and the outer wall of the nut (11) is fixedly connected with a plurality of anti-skid lines (17).

6. The integrated anti-loosening self-locking bolt according to claim 1, characterized in that: The bottom of the stud (1) is threadedly connected with a nut (18), and the top of the nut (18) is provided with an inner groove (19).

7. The integrated anti-loosening self-locking bolt according to claim 6, characterized in that: The inner wall of the inner groove (19) is fixedly connected with a rubber ring (20), and the outer wall of the nut (18) is provided with a plurality of anti-skid grooves (21).

8. The integrated anti-loosening self-locking bolt according to claim 1, characterized in that: The bottom end of the stud (1) is acutely treated, and the tooth type of the external threads (3) is trapezoidal.

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