Anti-loosening screw
Through the innovative design of the screw head and stud assembly, and by utilizing the threaded connection and spring pressure of the clamping and locking components, the problem of screw loosening in high vibration environments is solved, achieving a stable fastening effect for the screw.
Patent Information
- Application Number
- CN202520258010.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-02-18
AI Technical Summary
Traditional screws are prone to loosening or falling off in high-vibration working environments, resulting in poor fastening effect.
The design employs a screw head and stud assembly, including a clamping assembly and a locking assembly. It utilizes the cooperation of a pressure ring, screw sleeve, clamping screw, nut and spring to limit the loosening of the screw through threaded connection and spring pressure. Combined with the squeezing mechanism of the insert and plug, it restricts the rotation of the screw.
It effectively prevents screws from loosening in high-vibration environments, ensures the stability of the fastening effect, and avoids screws falling off.
Smart Images
Figure CN223648284U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screw technology, and in particular to an anti-loosening screw. Background Technology
[0002] A screw is a tool that uses the physical and mathematical principles of inclined planes, circular rotation, and friction to gradually tighten objects and machine parts. "Screw" is a general term for fasteners, used in everyday speech. Screws are indispensable industrial necessities in daily life.
[0003] Screws have an extremely wide range of applications and are used in various working environments. Traditional screws have poor vibration damping. When screws are in high-vibration working environments, they will be subjected to vibration for a long time, which can easily lead to loosening or even falling off, resulting in a decrease in the fastening effect. Utility Model Content
[0004] The purpose of this invention is to provide an anti-loosening screw to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an anti-loosening screw, comprising a stud and a screw head fixedly disposed above the stud, characterized in that: a clamping assembly is provided on the screw head, a locking assembly is provided inside the stud, the clamping assembly includes a pressure ring, several threaded sleeves fixedly disposed outside the pressure ring, several clamping screws and a nut, and a spring A located inside the nut, an annular groove matching the pressure ring is formed on the top wall of the screw head, after the pressure ring is inserted into the annular groove and abuts against the screw head, the threaded sleeve is located outside the screw head, the clamping screw is screwed into the threaded sleeve and threadedly connected to the threaded sleeve, the bottom of the clamping screw is pointed, the top of the spring A is fixedly connected to the nut, and after the nut and the threaded sleeve are fixedly connected, the bottom of the spring A is fixedly connected to the clamping screw.
[0006] Preferably, the clamping assembly includes a plug, a top post, and a plug. A screw hole is formed on the top wall of the screw head, an insertion hole is formed on the bottom wall of the screw hole, and a hole A is formed on the side wall of the insertion hole. The top post is slidably disposed inside the hole A. The plug is inserted into the insertion hole and abuts against the end of the top post near the insertion hole. The end of the top post away from the insertion hole is pointed and located outside the screw post. The plug is screwed into the screw hole and fixedly connected to the plug.
[0007] Preferably, the clamping assembly further includes a convex ring fixedly disposed on the outside of the top post and a spring B sleeved on the top post. The side wall of the insertion hole has a hole B communicating with the hole A. The convex ring is slidably disposed inside the hole B. The two ends of the spring B are fixedly connected to the convex ring and the side wall of the hole B, respectively.
[0008] Preferably, a pressure plate is fixedly disposed above the plug wire, and the pressure plate is fixed above the screw head and the pressure ring after the plug wire is screwed into the screw hole.
[0009] Preferably, both the clamping screw and the top wall of the pressure plate are provided with hexagonal grooves.
[0010] Preferably, the bottom and top ends of the insertion post facing the insertion post are both rounded.
[0011] Preferably, the clamping screw and the top post are both made of high carbon steel.
[0012] The beneficial effects of this utility model are as follows: When using this utility model, the screw is screwed into the screw hole of the external part, fixing the screw and screw head to the external part. The insert is inserted into the insertion hole, making the insert and the top post abut against each other near the insertion hole. The pressure ring is inserted into the ring groove and abuts against the screw head, placing the screw sleeve outside the screw head. The plug is screwed into the screw hole and fixedly connected to the insert, fixing the pressure plate above the screw head and pressure ring. The top post is slidably positioned inside hole A. The plug will squeeze the insert, and the insert will squeeze the top post. The insert will push the top post away from the insertion hole out of hole A and embed into the side wall of the screw hole of the external part, restricting the screw rotation and preventing the screw from loosening. The clamping screw is screwed into the screw sleeve and threadedly connected to the screw sleeve. The clamping screw is continuously screwed into the screw sleeve... Tightening the screw downwards, the bottom of the clamping screw is pointed, and the bottom of the clamping screw will embed an external part, further restricting the rotation of the screw and playing a beneficial role in preventing the screw from loosening. The nut and the threaded sleeve are fixed (a threaded groove matching the nut is made on the threaded sleeve for installation), so that the two ends of spring A are fixedly connected to the clamping screw and the nut respectively. Spring A will apply pressure to the clamping screw, causing the threads of the clamping screw and the threads of the threaded sleeve to abut against each other, thus preventing the clamping screw from loosening. In summary, this utility model has the beneficial effect of preventing screw loosening, solving the problem that when the screw is in a high-vibration working environment, it will be subjected to vibration for a long time, which can easily lead to the screw loosening or even falling off, resulting in a deterioration of the fastening effect. Attached Figure Description
[0013] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Appendix Figure 2 This is a top view of the present invention;
[0015] Appendix Figure 3 For the appendix Figure 2 Sectional view at point AA;
[0016] Appendix Figure 4 For the appendix Figure 2 Sectional view at point BB.
[0017] In the diagram: 1. Stud; 2. Screw head; 3. Pressure ring; 4. Screw sleeve; 5. Clamping screw; 6. Nut; 7. Spring A; 8. Ring groove; 9. Insert post; 10. Top post; 11. Plug; 12. Screw hole; 13. Insertion hole; 14. Hole A; 15. Raised ring; 16. Spring B; 17. Hole B; 18. Pressure plate; 19. Hexagonal groove. Detailed Implementation
[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0019] like Figure 1-4As shown, this utility model discloses an anti-loosening screw, including a stud 1 and a screw head 2 fixedly disposed above the stud 1. The screw head 2 is provided with a clamping assembly, and the stud 1 is provided with a locking assembly. The clamping assembly includes a pressure ring 3, several threaded sleeves 4, several clamping screws 5 and a nut 6 fixedly disposed outside the pressure ring 3, and a spring A7 located inside the nut 6. The top wall of the screw head 2 is provided with an annular groove 8 that matches the pressure ring 3. After the pressure ring 3 is inserted into the annular groove 8 and abuts against the screw head 2, the threaded sleeves 4 are located outside the screw head 2. The clamping screws 5 are screwed into the threaded sleeves 4 and are threadedly connected to the threaded sleeves 4. The bottom of the clamping screws 5 is pointed. The top of the spring A7 is fixedly connected to the nut 6. After the nut 6 is fixedly connected to the threaded sleeves 4, the bottom of the spring A7 is fixedly connected to the clamping screw 5. In use, the screw is screwed into the screw hole 12 of the external part to fix the screw and screw head 2 to the external part. The insert 9 is inserted into the insertion hole 13 so that the insert 9 and the top post 10 are in contact with each other near the insertion hole 13. The pressure ring 3 is inserted into the ring groove 8 and in contact with the screw head 2 so that the screw sleeve 4 is located outside the screw head 2. The plug 11 is screwed into the screw hole 12 and fixedly connected to the insert 9 so that the pressure plate 18 is fixed above the screw head 2 and the pressure ring 3. The top post 10 is slidably set inside the hole A14. The plug 11 will squeeze the insert 9, and the insert 9 will squeeze the top post 10. The insert 9 will push the top post 10 away from the insertion hole 13 out of the hole A14 and into the side wall of the screw hole 12 of the external part, restricting the rotation of the screw and preventing the screw from loosening. The clamping screw 5 is screwed into the screw sleeve 4 and threadedly connected to the screw sleeve 4. Next, the clamping screw 5 is continuously screwed downwards. The bottom of the clamping screw 5 is pointed, and the bottom of the clamping screw 5 will embed into an external part, further restricting the rotation of the screw and playing a beneficial role in preventing the screw from loosening. The nut 6 is fixed to the screw sleeve 4 (a threaded groove matching the nut 6 is opened on the screw sleeve 4 for installation), so that the two ends of the spring A7 are fixedly connected to the clamping screw 5 and the nut 6 respectively. The spring A7 will apply pressure to the clamping screw 5, so that the thread of the clamping screw 5 abuts against the thread of the screw sleeve 4, which plays a role in preventing the clamping screw 5 from loosening. In summary, this utility model has the beneficial effect of preventing the screw from loosening, and solves the problem that when the screw is in a high-vibration working environment, the screw will be subjected to vibration for a long time, which will easily lead to the screw loosening or even falling off, resulting in a poor fastening effect.
[0020] Preferably, the clamping assembly includes a pin 9, a top pin 10, and a plug 11. A screw hole 12 is formed on the top wall of the screw head 2, an insertion hole 13 is formed on the bottom wall of the screw hole 12, and a hole A14 is formed on the side wall of the insertion hole 13. The top pin 10 is slidably disposed inside the hole A14. The pin 9 is inserted into the insertion hole 13 and abuts against the end of the top pin 10 near the insertion hole 13. The end of the top pin 10 away from the insertion hole 13 is pointed and located outside the screw head 1. The plug 11 is screwed into the screw hole 12 and fixedly connected to the pin 9. Because the top pin 10 is slidably disposed inside the hole A14, and the end of the top pin 10 away from the insertion hole 13 is pointed, when the top pin 10 is squeezed by the pin 9, the end of the top pin 10 away from the insertion hole 13 will push out of the hole A14 and embed into the side wall of the screw hole 12 of the external part, thus restricting the rotation of the screw.
[0021] Preferably, the clamping assembly further includes a convex ring 15 fixedly disposed on the outside of the top post 10 and a spring B16 sleeved on the top post 10. A hole B17 communicating with hole A14 is provided on the side wall of the insertion hole 13. The convex ring 15 is slidably disposed inside the hole B17, and both ends of the spring B16 are fixedly connected to the convex ring 15 and the side wall of the hole B17, respectively. Since the convex ring 15 is slidably disposed inside the hole B17, and both ends of the spring B16 are fixedly connected to the convex ring 15 and the side wall of the hole B17, when the insertion post 9 is pulled out of the insertion hole 13, the spring B16 will apply elastic force to the convex ring 15, causing the top post 10 to spring back into the hole A14, thus achieving automatic return and facilitating the disassembly of the screw. When disassembling the screw, first remove the plug 11 and the insertion post 9, then remove the pressure ring 3.
[0022] Preferably, a pressure plate 18 is fixedly disposed above the plug 11. After the plug 11 is screwed into the screw hole 12, the pressure plate 18 is fixed above the screw head 2 and the pressure ring 3. Since the pressure plate 18 is fixed above the screw head 2 and the pressure ring 3 after the plug 11 is screwed into the screw hole 12, it serves to fix the pressure ring 3.
[0023] Preferably, both the clamping screw 5 and the top wall of the pressure plate 18 are provided with hexagonal grooves 19. Since both the clamping screw 5 and the top wall of the pressure plate 18 are provided with hexagonal grooves 19, it facilitates the disassembly and assembly of the clamping screw 5 and the plug 11.
[0024] Preferably, the bottom of the insertion post 9 and the end of the top post 10 facing the insertion post 9 are both rounded. Since the bottom of the insertion post 9 and the end of the top post 10 facing the insertion post 9 are both rounded, it facilitates pushing the top post 10.
[0025] Preferably, both the clamping screw 5 and the top post 10 are made of high-carbon steel. Because both the clamping screw 5 and the top post 10 are made of high-carbon steel, they possess high hardness, making them easy to embed into most parts.
[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 anti-loosening screw, comprising a stud (1) and a screw head (2) fixedly disposed above the stud (1), characterized in that: The screw head (2) is provided with a clamping assembly, and the stud (1) is provided with a clamping assembly. The clamping assembly includes a pressure ring (3), several threaded sleeves (4) fixedly disposed on the outside of the pressure ring (3), several clamping screws (5) and a nut (6), and a spring A (7) located inside the nut (6). The top wall of the screw head (2) is provided with an annular groove (8) that matches the pressure ring (3). After the pressure ring (3) is inserted into the annular groove (8) and abuts against the screw head (2), the threaded sleeves (4) are located on the outside of the screw head (2). The clamping screws (5) are screwed into the threaded sleeves (4) and threadedly connected to the threaded sleeves (4). The bottom of the clamping screws (5) is pointed. The top of the spring A (7) is fixedly connected to the nut (6). After the nut (6) is fixedly connected to the threaded sleeves (4), the bottom of the spring A (7) is fixedly connected to the clamping screws (5).
2. The anti-loosening screw according to claim 1, characterized in that: The clamping assembly includes a plug (9), a top post (10), and a plug (11). The top wall of the screw head (2) has a screw hole (12), the bottom wall of the screw hole (12) has a socket (13), and the side wall of the socket (13) has a hole A (14). The top post (10) is slidably disposed inside the hole A (14). The plug (9) is inserted into the socket (13) and abuts against the end of the top post (10) near the socket (13). The end of the top post (10) away from the socket (13) is pointed and located outside the screw post (1). The plug (11) is screwed into the screw hole (12) and fixedly connected to the plug (9).
3. The anti-loosening screw according to claim 2, characterized in that: The clamping assembly also includes a protruding ring (15) fixedly disposed on the outside of the top post (10) and a spring B (16) sleeved on the top post (10). The side wall of the insertion hole (13) is provided with a hole B (17) communicating with the hole A (14). The protruding ring (15) is slidably disposed inside the hole B (17). The two ends of the spring B (16) are fixedly connected to the protruding ring (15) and the side wall of the hole B (17) respectively.
4. The anti-loosening screw according to claim 2, characterized in that: A pressure plate (18) is fixedly installed above the plug (11). After the plug (11) is screwed into the screw hole (12), the pressure plate (18) is fixed above the screw head (2) and the pressure ring (3).
5. The anti-loosening screw according to claim 2, characterized in that: Both the clamping screw (5) and the pressure plate (18) have hexagonal grooves (19) on their top walls.
6. The anti-loosening screw according to claim 2, characterized in that: The bottom and top of the insert (9) and the top of the insert (10) are both rounded at the end facing the insert (9).
7. The anti-loosening screw according to claim 2, characterized in that: The clamping screw (5) and the top post (10) are both made of high carbon steel.