A screw with anti-loosening structure

Abstract

The utility model discloses a screw with anti -loose structure specifically relates to screw technical field, including screw main part, the screw main part includes screw rod and screw cap, the outer end surface of screw rod is equipped with thread silk, the outside of screw cap upper end is equipped with the installation baffle, the middle part of installation baffle lower extreme is equipped with the limit plug -in board, the middle part of limit plug -in board lower extreme is equipped with the anti -drop plug -in rod. The utility model discloses actually use, through the corresponding setting state of thread silk, taper groove and taper strip, when the screw main part is rotated, can attack the inside of work piece with screw main part, after the installation of screw main part, taper groove and taper strip will be stuck in the inside of work piece, when the screw main part produces loosening and drop, need drive screw main part to produce reverse rotation, taper groove and taper strip will be stuck in the inside of work piece, make screw main part unable to carry out reverse rotation, thereby effectively increase the stability of screw main part installation.

Description

Technical Field

[0001] This utility model relates to the field of screw technology, and more specifically, to a screw with an anti-loosening structure. Background Technology

[0002] Screws, also known as screws or bolts, are a general term, while screw shanks and screw rods are distinct. Screw shanks, often called wood screws, have a pointed tip and a larger thread pitch, typically used for fastening wooden or plastic parts. Screw rods, on the other hand, are machine screws with a flat tip and a smaller, more uniform thread pitch, generally used for fastening metal or machinery. After installation, vibrations from machinery and workpieces can easily cause screws to loosen and fall out, necessitating a loosening design.

[0003] For example, patent CN217633383U discloses a screw with an anti-loosening structure. First, a mounting hole is pre-drilled on the surface of the wooden furniture. After the mounting hole is drilled, a pointed cone is inserted into the mounting hole. Then, the screw is rotated with a screwdriver, and the stud gradually moves inward along the inner wall of the mounting hole. When the stud and the anti-loosening pin are completely inside the mounting hole, the drive pin is inserted into the anti-loosening hole. Since the upper part of the outer wall of the drive pin is threaded and its bottom surface is a normal smooth cylinder, after the drive pin is assembled into the anti-loosening hole, the drive pin is turned with a screwdriver, and the drive pin gradually enters the anti-loosening hole.

[0004] When the above device is in use, after the stud is installed, the anti-loosening component is driven to move out of the movable hole by the drive column, thereby using the limiting nail on the outer wall of the top plate to drive into the wood, thereby further fixing the position of the screw and greatly improving the stability of the screw installation. However, the movable hole damages the overall structure of the stud, thus affecting the service life of the screw. At the same time, the drive column becomes loose inside the anti-loosening hole, and the anti-loosening component held by the drive column will also become loose, thus affecting the anti-loosening effect of the screw. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a screw with an anti-loosening structure. The technical problem to be solved by the present invention is: how to make the screw body more effective in preventing loosening.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a screw with an anti-loosening structure, comprising a screw body, the screw body comprising a screw rod and a screw cap, the outer end face of the screw rod being provided with threads, the upper end of the screw cap being provided with an installation baffle, the lower end of the installation baffle being provided with a limiting insert plate, and the lower end of the limiting insert plate being provided with an anti-loosening insert rod.

[0007] A vertical strip groove is provided on the upper side of the outer end face of the screw rod, an anti-dislodgement insertion hole is provided in the middle of the upper end of the screw cap, multiple tapered grooves are provided on the outer end of the thread, multiple tapered strips are provided at the lower end of the screw cap, and locking movable plates are provided on both sides of the inner end face of the vertical strip groove.

[0008] In a preferred embodiment, the screw rod is installed in the middle of the lower end of the screw cap, and a screw groove is formed in the middle of the upper end of the screw cap.

[0009] In a preferred embodiment, a movable insert rod is provided at the connection between the upper end of the locking movable plate and the vertical strip groove, and an arc-shaped protrusion is provided on one side of the outer end face of the locking movable plate.

[0010] In a preferred embodiment, the lower end of the locking movable plate is provided with an anti-disengagement block, and the outer end face of the anti-disengagement block is provided with a plurality of locking blocks.

[0011] In a preferred embodiment, the inner end face of the anti-detachment block is provided with a connecting ring, and one side of the outer end face of the connecting ring is provided with a tension spring.

[0012] In a preferred embodiment, the threaded wire is spiral on the outer end face of the screw rod, the screw rod is tapered at the lower end in the main viewing direction, and the lower diameter of the screw cap is the same as the upper diameter of the screw rod.

[0013] In a preferred embodiment, the screw groove is cross-shaped in plan view, and the tapered groove is curved on one end face in plan view.

[0014] In a preferred embodiment, the inclined surface of the tapered strip and the inclined surface of the tapered groove in the top view are in the same direction.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] In practical use, this invention, through the corresponding arrangement of the thread, tapered groove, and tapered bar, allows the screw body to be driven into the workpiece when it rotates. After the screw body is installed, the tapered groove and tapered bar will be locked inside the workpiece. When the screw body becomes loose or falls off, it needs to be rotated in the opposite direction. The tapered groove and tapered bar will be locked inside the workpiece, preventing the screw body from rotating in the opposite direction, thereby effectively increasing the stability of the screw body installation and preventing the screw body from becoming loose or falling off.

[0017] Meanwhile, when the movable insert rod, locking movable plate, arc-shaped protrusion, anti-loosening block, and locking clip are in their corresponding settings, the lower end of the locking movable plate will be pushed outward when the anti-loosening insert rod is inserted into the anti-loosening hole, and the anti-loosening block and locking clip will press against the inside of the workpiece, thereby effectively preventing the screw body from loosening and falling off after installation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This utility model Figure 1 Enlarged view of section A.

[0020] Figure 3 This is the overall front sectional view of the present utility model.

[0021] Figure 4 This utility model Figure 3 Enlarged view of section B in the middle.

[0022] The attached diagram is labeled as follows: 1. Screw body, 2. Screw rod, 3. Screw cap, 4. Threaded screw, 5. Tapered groove, 6. Screw groove, 7. Mounting baffle, 8. Limiting insert plate, 9. Vertical strip groove, 10. Anti-disengagement insert rod, 11. Anti-disengagement insert hole, 12. Movable insert rod, 13. Locking movable plate, 14. Arc-shaped protrusion, 15. Anti-disengagement block, 16. Connecting ring, 17. Tension spring, 18. Locking block, 19. Tapered strip. Detailed Implementation

[0023] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that the description of this disclosure will be more complete and fully convey the concept of the exemplary embodiments to those skilled in the art. The drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted.

[0024] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more exemplary embodiments. Numerous specific details are provided in the following description to give a full understanding of exemplary embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced with one or more of the specific details omitted, or other methods, components, steps, etc., can be employed. In other instances, well-known structures, methods, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this disclosure.

[0025] This utility model provides a screw with an anti-loosening structure, such as Figure 1 , 2 As shown in Figures 3 and 4, the screw body 1 includes a screw rod 2 and a screw cap 3. The outer end face of the screw rod 2 is provided with a thread 4. When the screw rod 2 rotates, it can enter the interior of the workpiece through the thread 4, thereby facilitating the use of the screw body 1.

[0026] When the screw rod 2 rotates, it can penetrate into the interior of the workpiece through the thread 4, thereby facilitating the use of the screw body 1. The upper part of the screw cap 3 is provided with a mounting baffle 7, and the lower part of the mounting baffle 7 is provided with a limiting insert 8.

[0027] The lower end of the limiting plate 8 is provided with an anti-disengagement insert rod 10, the upper side of the outer end face of the screw rod 2 is provided with a vertical strip groove 9, the upper end of the screw cap 3 is provided with an anti-disengagement insert hole 11, and the outer end of the thread 4 is provided with multiple tapered grooves 5.

[0028] The lower end of the screw cap 3 is provided with multiple tapered strips 19, and both sides of the inner end face of the vertical strip groove 9 are provided with locking movable plates 13. The screw rod 2 is installed in the middle of the lower end of the screw cap 3, and the middle of the upper end of the screw cap 3 is provided with a screw groove 6. The screw groove 6 allows workers to easily insert a screwdriver into the screw groove 6, making it more convenient for workers to install and use the screw body 1.

[0029] The upper end of the locking movable plate 13 is provided with a movable insert rod 12 at the connection between it and the vertical strip groove 9. An arc-shaped protrusion 14 is provided on one side of the outer end face of the locking movable plate 13. An anti-disengagement block 15 is provided at the lower end of the locking movable plate 13.

[0030] The outer end face of the anti-detachment block 15 is provided with a plurality of locking blocks 18, the inner end face of the anti-detachment block 15 is provided with a connecting ring 16, and one side of the outer end face of the connecting ring 16 is provided with a tension spring 17.

[0031] When the operator rotates the screw body 1, it will cause the tapered strip 19 to rotate. The curved part of the tapered strip 7 will fit against the outer end face of the workpiece, so that the tapered strip 19 will not affect the rotation of the screw body 1 when it is installed on the workpiece surface. After the screw body 1 is rotated and locked and stabilized, the lower end of the screw cap 3 will fit against the end face of the workpiece, and the tapered strip 19 will also be stuck inside the workpiece. When the screw body 1 becomes loose, the protruding part of the tapered strip 19 will be stuck against the surface of the workpiece, thereby preventing the screw body 1 from becoming loose and falling off after installation. The outer end of the thread 4 is provided with multiple tapered grooves 5.

[0032] The threaded wire 4 is spiral on the outer end face of the screw rod 2, and the screw rod 2 is tapered at the lower end in the main viewing direction;

[0033] The screw cap 3 is tapered on its lower end face in the main viewing direction. The diameter of the lower end of the screw cap 3 is the same as the diameter of the upper end of the screw rod 2. The screw groove 6 is cross-shaped in the top view direction. After the screw body 1 is fixed, the worker can insert the anti-loosening rod 10 into the anti-loosening hole 11 and then insert the anti-loosening hole 11 into the vertical strip groove 9. The anti-loosening rod 10 will push against the arc-shaped protrusion 14 and move the lower end of the locking movable plate 13 outward, so that the anti-loosening block 15 and the locking block 18 are locked inside the workpiece, thereby effectively increasing the stability of the screw body 1 installation and preventing the screw body 1 from falling off after installation.

[0034] The tapered groove 5 has a curved end face in the top view direction, and the inclined surface of the tapered bar 7 is in the same direction as the inclined surface of the tapered groove 5 in the top view direction, so that the screw body 1 can rotate and enter the interior of the workpiece.

[0035] When the screw body 1 becomes loose, it will rotate in the opposite direction inside the workpiece. One side of the tapered strip 19 will be stuck on the inner end face of the workpiece, thereby preventing the screw rod 2 from becoming loose and falling off, making the screw body 1 more stable. When removing the screw body 1, the operator uses the baffle 7 and the limiting insert 8 to remove the anti-loosening insert 10 from the anti-loosening insert hole 11. The tension spring 17 will pull the connecting ring 16, causing the locking movable plate 13 to retract into the vertical strip groove 9. Then the screw body 1 can be screwed out from the inside of the workpiece.

[0036] Finally, it should be noted that: the accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0037] 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. A screw with an anti-loosening structure, comprising a screw body (1), characterized in that: The screw body (1) includes a screw rod (2) and a screw cap (3). The outer end face of the screw rod (2) is provided with a thread (4). The upper end of the screw cap (3) is provided with an installation baffle (7). The lower end of the installation baffle (7) is provided with a limiting insert (8). The lower end of the limiting insert (8) is provided with an anti-dislodgement insert (10). The upper side of the outer end face of the screw rod (2) is provided with a vertical strip groove (9), the middle part of the upper end of the screw cap (3) is provided with an anti-dislodgement insertion hole (11), the outer end of the thread (4) is provided with multiple tapered grooves (5), the lower end of the screw cap (3) is provided with multiple tapered strips (19), and both sides of the inner end face of the vertical strip groove (9) are provided with locking movable plates (13).

2. The screw with the anti-loosening structure according to claim 1, characterized in that: The screw rod (2) is installed in the middle of the lower end of the screw cap (3), and a screw groove (6) is provided in the middle of the upper end of the screw cap (3).

3. The screw with an anti-loosening structure according to claim 1, characterized in that: The upper end of the locking movable plate (13) is provided with a movable insert rod (12) at the connection between it and the vertical strip groove (9), and an arc-shaped protrusion (14) is provided on one side of the outer end face of the locking movable plate (13).

4. The screw with an anti-loosening structure according to claim 1, characterized in that: The lower end of the locking movable plate (13) is provided with an anti-detachment block (15), and the outer end face of the anti-detachment block (15) is provided with multiple locking blocks (18).

5. The screw with an anti-loosening structure according to claim 4, characterized in that: The inner end face of the anti-detachment block (15) is provided with a connecting ring (16), and one side of the outer end face of the connecting ring (16) is provided with a tension spring (17).

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