Special-shaped thread anti-retreating screw

Abstract

The utility model discloses a special-shaped thread anti-retreating screw, which belongs to the field of screws and comprises a screw head, a fixing shaft fixedly connected to the bottom of the screw head, a fixing plate fixedly connected to the bottom of the fixing shaft, a special-shaped thread screw body fixedly connected to the bottom of the fixing plate, and a rotating plate rotationally connected to the outer side of the fixing shaft. The bottom of the rotating plate is rotationally connected with two first connecting rods, the other ends of the first connecting rods are rotationally connected with first blocks, the other ends of the first blocks are rotationally connected with two second connecting rods, the other ends of the two second connecting rods are rotationally connected with third blocks, and the outer sides of the two third blocks located on the same side movably abut against the same fourth block. The anti-vibration screw is reasonable in structural design, through cooperation of the second block, the first connecting rod and the second spring, after the screw is tightened, the device can further conduct mechanical locking, the screw body is not prone to loosening after being fixed, and the vibration resistance is improved.

Description

Technical Field

[0001] This utility model relates to the field of screws, and in particular to a non-retractable screw with irregular thread. Background Technology

[0002] Anti-loosening screws with irregular threads are fasteners that prevent loosening through a special thread structure and additional devices. Their core features include: non-standard thread profiles such as bidirectional, rectangular, or conical curves; combined with limiting structures such as lock nuts, retaining rings, and elastic devices to prevent thread loosening. The anti-loosening principle mainly relies on the interlocking effect of oppositely threaded threads. For example, the tightening direction of the lock nut is opposite to the loosening direction of the fastening nut, creating mechanical interference; simultaneously, the limiting block and retaining ring compress the thread through elastic force, enhancing vibration resistance. This design is suitable for vibration and shock environments, effectively preventing threaded connection failure, and combines detachability and self-locking functions, making it widely used in mechanical assembly, aerospace, and other fields.

[0003] Existing irregular thread screws often have simple structures and lack anti-loosening mechanisms, which makes them prone to falling off due to vibration after use, thus affecting the user's ability to secure them. Therefore, we propose an irregular thread anti-loosening screw to solve this problem. Utility Model Content

[0004] The purpose of this utility model is to provide a non-retractable screw with irregular thread to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A non-circular threaded anti-reverse screw includes: a screw head, a fixed shaft fixedly connected to the bottom of the screw head, a fixed plate fixedly connected to the bottom of the fixed shaft, a non-circular threaded screw body fixedly connected to the bottom of the fixed plate, a rotating plate rotatably connected to the outside of the fixed shaft, two No. 1 connecting rods rotatably connected to the bottom of the rotating plate, a No. 1 block rotatably connected to the other end of each No. 1 connecting rod, two No. 2 connecting rods rotatably connected to the other end of each of the two No. 2 connecting rods, a No. 3 block rotatably connected to the other end of each of the two No. 3 blocks located on the same side, both of which movably abut against the same No. 4 block, and a No. 2 block fixedly connected to one side of the No. 4 block.

[0007] Preferably, a lever is slidably connected to the top of the rotating plate, and a first spring is fixedly connected to the bottom of the lever. The other end of the first spring is fixedly connected to the top of the rotating plate, and multiple bases are fixedly connected to the bottom of the screw head. A round hole adapted to the lever is opened on the inner side of the base, and the outer side of the lever is movably inserted into the inner side of the corresponding round hole.

[0008] Preferably, a second spring is fixedly connected to one side of the third block, and the other end of the second spring is fixedly connected to the top of the fixing plate. Multiple third springs are fixedly connected to the top of the fixing plate, and the other ends of the multiple third springs are fixedly connected to one side of the corresponding fourth block.

[0009] Preferably, the top of the rotating plate is fixedly connected to a plurality of rods No. 1 and No. 2, and the outer sides of the plurality of rods No. 1 and No. 2 are slidably connected to cylinders No. 1 and No. 2, respectively, and the other sides of the plurality of cylinders No. 1 and No. 2 are respectively fixedly connected to one side of the corresponding block No. 3 and block No. 4.

[0010] Preferably, the top of the fixing plate has two sliding grooves that are adapted to the first block, and the outer sides of the two first blocks are slidably connected to the inner side of the corresponding sliding groove.

[0011] Preferably, the inner side of the fixing plate has two sliding holes that are adapted to the second block, and the outer sides of the two second blocks are slidably connected to the inner side of the corresponding sliding holes.

[0012] In this utility model, a special-shaped threaded anti-reverse screw is made by screwing the screw body into the corresponding threaded hole. Then, the user can move the lever to compress the first spring and rotate the rotating plate. At this time, the first connecting rod only deflects to a certain extent. Then, the first block begins to move horizontally, which causes the second connecting rod to start rotating. Furthermore, the third block begins to move horizontally, and then the third block begins to squeeze the fourth block.

[0013] In this utility model, the non-retractable screw with irregular thread is driven by block number four to move block number two. Then, block number two can enter the groove inside the corresponding device. At this time, block number two is used to prevent the screw body from loosening. Then, the user no longer moves the lever. Under the action of spring number one, the lever inserts into the corresponding base. At this time, the installation of the device is completed, which makes the device stable in a certain place.

[0014] The structure of this utility model is reasonably designed. Through the cooperation between the second block, the first connecting rod and the second spring, the device can be further mechanically locked after the screw is tightened. This makes the screw body less likely to loosen after it is fixed, thus improving its vibration resistance. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of an irregularly shaped threaded anti-return screw proposed in this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of an irregularly shaped threaded anti-return screw proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the structure proposed in this utility model.

[0018] In the diagram: 1. Screw head; 2. Fixed shaft; 3. Fixed plate; 4. Body of the screw with different thread; 5. Rotating plate; 6. Connecting rod No. 1; 7. Block No. 1; 8. Connecting rod No. 2; 9. Block No. 3; 10. Block No. 4; 11. Block No. 2; 12. Toggle block; 13. Base; 14. Spring No. 1; 15. Spring No. 2; 16. Spring No. 3. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figure 1-3 A special-shaped threaded anti-reverse screw includes: a screw head 1, a fixed shaft 2 fixedly connected to the bottom of the screw head 1, a fixed plate 3 fixedly connected to the bottom of the fixed shaft 2, a special-shaped threaded screw body 4 fixedly connected to the bottom of the fixed plate 3, a rotating plate 5 rotatably connected to the outside of the fixed shaft 2, two first connecting rods 6 rotatably connected to the bottom of the rotating plate 5, a first block 7 rotatably connected to the other end of the first connecting rod 6, two second connecting rods 8 rotatably connected to the other end of the first block 7, and a third block 9 rotatably connected to the other end of each of the two second connecting rods 8, and a fourth block 10 movably abutting the outside of the two third blocks 9 located on the same side, and a second block 11 fixedly connected to one side of the fourth block 10.

[0021] In this embodiment, a lever 12 is slidably connected to the top of the rotating plate 5, and a first spring 14 is fixedly connected to the bottom of the lever 12. The other end of the first spring 14 is fixedly connected to the top of the rotating plate 5. Multiple bases 13 are fixedly connected to the bottom of the screw head 1. A round hole adapted to the lever 12 is opened on the inner side of the base 13. The outer side of the lever 12 is movably inserted into the inner side of the corresponding round hole. A second spring 15 is fixedly connected to one side of the third block 9. The other end of the second spring 15 is fixedly connected to the top of the fixed plate 3. Multiple third springs 16 are fixedly connected to the top of the fixed plate 3. The other ends of the multiple third springs 16 are all fixedly connected to one side of the corresponding fourth block 10, which allows the fourth block 10 to automatically reset.

[0022] In this embodiment, multiple rods No. 1 and No. 2 are fixedly connected to the top of the rotating plate 5, and cylinders No. 1 and No. 2 are slidably connected to the outer sides of the multiple rods No. 1 and No. 2. The other sides of the multiple cylinders No. 1 and No. 2 are respectively fixedly connected to the side of the corresponding block No. 3 9 and block No. 4 10. The top of the fixed plate 3 has two sliding grooves that are adapted to block No. 1 7, and the outer sides of the two blocks No. 1 7 are slidably connected to the inner side of the corresponding sliding grooves. The inner side of the fixed plate 3 has two sliding holes that are adapted to block No. 2 11, and the outer sides of the two blocks No. 2 11 are slidably connected to the inner side of the corresponding sliding holes. This allows block No. 2 11 to be stably inserted into the inner side of the external groove.

[0023] In this embodiment, during use, the user screws the screw body 4 into the corresponding threaded hole. Then, the user can move the lever 12, causing the first spring 14 to compress and rotate the rotating plate 5. At this time, the first connecting rod 6 only deflects to a certain extent. Then, the first block 7 begins to move horizontally, causing the second connecting rod 8 to rotate as well. Furthermore, the third block 9 begins to move horizontally, and then the third block 9 begins to press the fourth block 10, causing the fourth block 10 to drive the second block 11 to move. Then, the second block 11 can enter the groove opened in the corresponding device. At this time, the second block 11 is used to prevent the screw body 4 from loosening. At this time, the user stops moving the lever 12. Under the action of the first spring 14, the lever 12 is inserted into the corresponding base 13. At this time, the installation of the device is completed, which allows the device to be stably nailed to a certain place.

[0024] The above provides a detailed description of the irregular threaded anti-return screw provided by this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A special-shaped threaded anti-reverse screw, characterized in that, include: The screw head (1) is fixedly connected to a fixed shaft (2) at its bottom, and a fixed plate (3) is fixedly connected to the bottom of the fixed shaft (2), and a screw body (4) with different threads is fixedly connected to the bottom of the fixed plate (3), and a rotating plate (5) is rotatably connected to the outside of the fixed shaft (2), and two No. 1 connecting rods (6) are rotatably connected to the bottom of the rotating plate (5), and a No. 1 block (7) is rotatably connected to the other end of the No. 1 connecting rod (6), and two No. 2 connecting rods (8) are rotatably connected to the other end of the No. 1 block (7), and two No. 2 connecting rods (8) are rotatably connected to the other end of the two No. 2 connecting rods (8), and a No. 3 block (9) is rotatably connected to the other end of the two No. 3 blocks (9) located on the same side, and the same No. 4 block (10) is movably abutted against the outside of the two No. 3 blocks (9), and a No. 2 block (11) is fixedly connected to one side of the No. 4 block (10).

2. The anti-return screw with irregular thread according to claim 1, characterized in that, The rotating plate (5) is slidably connected to the top of the rotating plate (5), and a first spring (14) is fixedly connected to the bottom of the rotating plate (5). The other end of the first spring (14) is fixedly connected to the top of the rotating plate (5), and multiple bases (13) are fixedly connected to the bottom of the screw head (1). The inner side of the base (13) is provided with a round hole that matches the rotating plate (12), and the outer side of the rotating plate (12) is movably inserted into the inner side of the corresponding round hole.

3. The anti-return screw with irregular thread according to claim 1, characterized in that, A second spring (15) is fixedly connected to one side of the third block (9), and the other end of the second spring (15) is fixedly connected to the top of the fixing plate (3). A plurality of third springs (16) are fixedly connected to the top of the fixing plate (3), and the other ends of the plurality of third springs (16) are fixedly connected to the corresponding fourth block (10).

4. The anti-return screw with irregular thread according to claim 1, characterized in that, The top of the rotating plate (5) is fixedly connected to multiple rods No. 1 and No. 2, and the outer sides of the multiple rods No. 1 and No. 2 are slidably connected to cylinders No. 1 and No. 2, and the other sides of the multiple cylinders No. 1 and No. 2 are respectively fixedly connected to the side of the corresponding block No. 3 (9) and block No. 4 (10).

5. A non-circular threaded anti-return screw according to claim 1, characterized in that, The top of the fixing plate (3) has two sliding grooves that are compatible with the first block (7), and the outer sides of the two first blocks (7) are slidably connected to the inner side of the corresponding sliding groove.

6. The anti-return screw with irregular thread according to claim 1, characterized in that, The inner side of the fixing plate (3) has two sliding holes that are compatible with the second block (11), and the outer sides of the two second blocks (11) are slidably connected to the inner side of the corresponding sliding holes.

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