Anti-loosening combined stop screw

Abstract

The utility model discloses an anti-loose combined stop screw which comprises a screw rod body, a screw head and a screwing assembly, the screw head is fixedly connected to the top of the screw rod body, the screwing assembly is arranged over the screw head, a groove is formed in the top end of the screw head, the bottom end of the screwing assembly extends into the groove, and the screw rod body is fixedly connected to the screw head. The bottom end of the screwing assembly is fixedly connected with a bearing plate, the bearing plate is rotationally connected with the inner wall of the groove, the bearing plate can slide up and down along the inner wall of the groove, and the top of the bearing plate is fixedly connected with a limiting pile. The screwing assembly is arranged above the screw head, the screwing assembly is in rotating connection with the screw head generally, the screw cannot be screwed when the screwing assembly is touched accidentally, loosening of the screw can be prevented, the screwing assembly is lifted upwards, the limiting pile is matched with the limiting hole in an inserted mode, and the screw can be screwed conveniently. The screwing assembly and the screw head temporarily form a whole, and screwing of the screw is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to an anti-loosening combined stop screw. Background Art

[0002] Fasteners are a class of mechanical parts used for connecting and fastening. They are very common in the fields of engineering and manufacturing and have a variety of uses. The typical function of a fastener is to create a mechanical connection between parts to maintain their consistency and integrity in position. These parts can connect two or more parts or fix parts to a specific structure or surface. There are many types of fasteners, including but not limited to bolts, nuts, screws, studs, bolt connection sleeves, threaded pins, pins, washers, and spring washers. Each fastener has its own specific shape, size, and material to meet different application requirements.

[0003] A stop screw is a fastener used to prevent threads from loosening. It uses a special structural design to prevent threads from loosening after tightening, and can prevent loosening without the use of other locking devices. Stop screws are generally used in industries such as automobiles, machinery, and electronics. The most common application scenarios for stop screws are automobiles and mechanical equipment. In the automobile manufacturing process, the use of stop screws can ensure safety and reliability and prevent loose threads between automobile parts from causing vehicle failures. In the manufacturing process of mechanical equipment, it can prevent mechanical equipment parts from swinging or making noise due to loose threads during high-speed operation, thereby enhancing the stability and reliability of the equipment.

[0004] When some existing screws are in use, a limiting structure is provided on them to limit the screws to prevent the screws from being accidentally rotated. Although the limiting structure enhances the stability of the screws during installation, it will hinder the screwing of the screws when removing the screws, making it inconvenient to remove the screws later.

[0005] For example, a screw that prevents loosening is disclosed in the announcement number CN216343333U. When the screw is in use, the tool is inserted into the tool groove, and then the ring body is driven to rotate, and the ring body drives the threaded rod to rotate, and is squeezed through the spike portion, and then the threaded rod is installed in a spiral manner; through the anti-loosening groove, when screwing in, it is squeezed through the spiral protrusion, wherein the rear inclined surface is preferably coincident with the vertical section of the spiral protrusion, so that after the installation is completed, under the reaction of the force, the part of the squeezed surface rebounds and enters the anti-loosening groove. At this time, the resistance of the spiral protrusion when rotating in the opposite direction is large, so the screw can be prevented from loosening, and the front inclined surface and the vertical section of the spiral protrusion are acute angles, which can ensure the forward screwing of the spiral protrusion; after the installation is completed, the annular groove squeezes the positioning ring, so that the cone thorn pierces the installation surface, and the use of the friction ring can generate a certain elastic pressure to squeeze the positioning ring, further enhancing the stability of the screw during installation and preventing it from loosening.

[0006] Although the cone-shaped spikes at the bottom of the positioning ring of the patent pierce the installation surface, which enhances the stability of the screw during installation, it will hinder the screwing of the screw when removing the screw, making it inconvenient to remove the screw later.

[0007] Therefore, it is necessary to invent a combined anti-loosening stop screw to solve the above problems. Utility Model Content

[0008] The utility model aims to provide a combined stop screw which is anti-loosening, so as to solve the above-mentioned technical problems.

[0009] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a combined anti-loosening stop screw, comprising a screw shaft, a screw head and a screwing assembly, the screw head is fixedly connected to the top of the screw shaft, the screwing assembly is arranged directly above the screw head, the top of the screw head is provided with a groove, the bottom end of the screwing assembly extends into the inside of the groove, the bottom end of the screwing assembly is fixedly connected with a bearing plate, the bearing plate is rotatably connected to the inner wall of the groove, the bearing plate can slide up and down along the inner wall of the groove, the top of the bearing plate is fixedly connected to a limiting pile, the top of the screw head is provided with a limiting hole, the limiting hole matches the limiting pile, and the top of the screwing assembly is provided with a screwing groove.

[0010] The screwing assembly can be easily screwed through the screwing groove.

[0011] Preferably, a gap is left between the top of the bearing plate and the inner top surface of the groove, and the top of the limiting pile does not contact the inner top surface of the groove.

[0012] Generally, the screwing assembly maintains a rotational connection with the screw head, and accidental contact with the screwing assembly will not cause the screw to rotate.

[0013] Preferably, the number of the limiting piles is set to be multiple, and the multiple limiting piles are all arranged at the top edge of the bearing plate, and the multiple limiting piles are distributed in a ring array.

[0014] Preferably, the number of the limiting holes is set to be multiple, and the multiple limiting holes are all arranged at the top edge of the groove, and the multiple limiting holes are distributed in a ring array.

[0015] Preferably, the limiting pile and the limiting hole are both cylindrical in shape, and the height of the limiting pile is equal to the depth of the limiting hole.

[0016] Lift the screwing assembly upwards and allow the limiting pile to be plugged into and matched with the limiting hole, so that the screwing assembly and the screw head temporarily form a whole, making it easier to screw the screw.

[0017] Preferably, the screwing groove is in the shape of a regular hexagon, and an anti-slip pad is fixedly connected to the inner wall of the screwing groove.

[0018] The hexagonal screw slot can be used with a hexagonal wrench.

[0019] Preferably, the anti-slip pad is made of rubber material, and the inner wall surface of the anti-slip pad is provided with protrusions.

[0020] Protrusions are arranged on the surface of the rubber anti-skid pad, which can further increase the squeezing force between the hexagonal wrench and the anti-skid pad, making the interference connection between the hexagonal wrench and the anti-skid pad more secure.

[0021] Preferably, the outer surfaces of the screw shaft, the screw head, the screwing assembly, the bearing plate and the limit pile are all coated with anti-rust paint.

[0022] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0023] By arranging a screwing assembly above the screw head, the screwing assembly generally maintains a rotational connection with the screw head, and accidental touching of the screwing assembly will not cause the screw to rotate, which is helpful to prevent the screw from loosening. The screwing assembly is lifted upward, and the limit pile is plugged and matched with the limit hole, so that the screwing assembly and the screw head temporarily form a whole, which is convenient for tightening the screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of the screwing assembly of the utility model when it is not lifted;

[0025] Figure 2 This is a schematic diagram of the overall structure of the screwing assembly of the utility model when it is lifted;

[0026] Figure 3 This is a cross-sectional view of the overall structure of the screwing assembly of the utility model when it is not lifted;

[0027] Figure 4 This is a cross-sectional view of the overall structure of the screwing assembly of the utility model when it is lifted;

[0028] Figure 5 It is a structural schematic diagram of the screw head and the screwing assembly of the utility model.

[0029] Description of reference numerals:

[0030] 1. Screw shaft; 2. Screw head; 3. Twist assembly; 4. Groove; 5. Load-bearing plate; 6. Limit pile; 7. Limit hole; 8. Twist groove; 9. Anti-slip pad. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0032] The utility model provides Figure 1-5 The illustrated anti-loosening combined stop screw comprises a screw shaft 1, a screw head 2 and a screwing assembly 3, wherein the screw head 2 is fixedly connected to the top of the screw shaft 1, the screwing assembly 3 is arranged directly above the screw head 2, a groove 4 is provided at the top of the screw head 2, the bottom end of the screwing assembly 3 extends into the inside of the groove 4, a bearing plate 5 is fixedly connected to the bottom end of the screwing assembly 3, the bearing plate 5 is rotatably connected to the inner wall of the groove 4, the bearing plate 5 can slide up and down along the inner wall of the groove 4, a limiting pile 6 is fixedly connected to the top of the bearing plate 5, a limiting hole 7 is provided at the top of the screw head 2, the limiting hole 7 matches the limiting pile 6, and a screwing groove 8 is provided at the top of the screwing assembly 3.

[0033] In one aspect of the present embodiment, a gap is left between the top of the bearing plate 5 and the inner top surface of the groove 4, the top of the limiting pile 6 does not contact the inner top surface of the groove 4, the number of limiting piles 6 is set to multiple, and the multiple limiting piles 6 are all arranged at the top edge of the bearing plate 5, and the multiple limiting piles 6 are distributed in a circular array, the number of limiting holes 7 is set to multiple, and the multiple limiting holes 7 are all arranged at the top edge of the groove 4, and the multiple limiting holes 7 are distributed in a circular array, the limiting piles 6 and the limiting holes 7 are both cylindrical in shape, the height of the limiting piles 6 is equal to the depth of the limiting holes 7, the shape of the screwing groove 8 is a regular hexagon, and the inner wall of the screwing groove 8 is fixedly connected with an anti-skid pad 9, the anti-skid pad 9 is made of rubber material, and the inner wall surface of the anti-skid pad 9 is provided with protrusions, and the outer surfaces of the screw shaft 1, the screw head 2, the screwing assembly 3, the bearing plate 5 and the limiting pile 6 are all coated with anti-rust paint.

[0034] Working principle of this utility model:

[0035] Refer to the instruction manual Figure 1-5When using the utility model, first insert the bottom end of the screw shaft 1 into the screw hole, then insert the hexagonal wrench into the screw groove 8 at the top of the screwing component 3, and the anti-skid pad 9 on the inner wall of the screw groove 8 is in interference contact with the hexagonal wrench. At this time, the screwing component 3 and the hexagonal wrench temporarily form a whole, and the screwing component 3 is lifted up by the hexagonal wrench, and the limiting pile 6 on the top of the bearing plate 5 is plugged and matched with the limiting hole 7 on the screw head 2. At this time, the hexagonal wrench, the screwing component 3 and the screw head 2 temporarily form a whole, and then the screw can be screwed with the help of the hexagonal wrench until the screw shaft 1 is completely drilled into the screw hole to complete the installation of the screw;

[0036] After the screw is installed, the screwing assembly 3 is pushed back to its original position so that the limit pile 6 is separated from the limit hole 7. At this time, using a hexagonal wrench to rotate the screwing assembly 3 will only cause the screwing assembly 3 to rotate alone above the screw head 2, and will not drive the screw head 2 and the screw shaft 1 to rotate together, so it will not cause the screw to rotate, which is helpful to prevent the screw from loosening due to accidental touch.

Claims

1. A combined stop screw for preventing loosening, comprising a screw shaft (1), a screw head (2) and a screwing assembly (3), characterized in that: The screw head (2) is fixedly connected to the top of the screw shaft (1); the screw assembly (3) is arranged directly above the screw head (2); a groove (4) is provided at the top of the screw head (2); the bottom of the screw assembly (3) extends into the inside of the groove (4); a bearing plate (5) is fixedly connected to the bottom of the screw assembly (3); the bearing plate (5) is rotatably connected to the inner wall of the groove (4); the bearing plate (5) can slide up and down along the inner wall of the groove (4); a limiting pile (6) is fixedly connected to the top of the bearing plate (5); a limiting hole (7) is provided at the top of the screw head (2); the limiting hole (7) matches the limiting pile (6); and a screw groove (8) is provided at the top of the screw assembly (3).

2. The anti-loosening combined stop screw according to claim 1, characterized in that: A gap is left between the top of the bearing plate (5) and the inner top surface of the groove (4), and the top of the limiting pile (6) does not contact the inner top surface of the groove (4).

3. The anti-loosening combined stop screw according to claim 1, characterized in that: The number of the limiting piles (6) is set to be multiple, and the multiple limiting piles (6) are all arranged at the top edge of the bearing plate (5), and the multiple limiting piles (6) are distributed in a ring array.

4. The anti-loosening combined stop screw according to claim 1, characterized in that: The number of the limiting holes (7) is set to be multiple, and the multiple limiting holes (7) are all arranged at the top edge of the groove (4), and the multiple limiting holes (7) are distributed in a ring array.

5. The anti-loosening combined stop screw according to claim 1, characterized in that: The limiting pile (6) and the limiting hole (7) are both cylindrical in shape, and the height of the limiting pile (6) is equal to the depth of the limiting hole (7).

6. The anti-loosening combined stop screw according to claim 1, characterized in that: The shape of the screwing groove (8) is a regular hexagon, and an anti-slip pad (9) is fixedly connected to the inner wall of the screwing groove (8).

7. The anti-loosening combined stop screw according to claim 6, characterized in that: The anti-skid pad (9) is made of rubber material, and the inner wall surface of the anti-skid pad (9) is provided with protrusions.

8. The anti-loosening combined stop screw according to claim 1, characterized in that: The outer surfaces of the screw shaft (1), the screw head (2), the screwing assembly (3), the bearing plate (5) and the limit pile (6) are all coated with anti-rust paint.

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