High-strength anti-loose precise screw fastening structure

Abstract

The utility model discloses a high-strength anti-loose precise screw fastening structure, which relates to the technical field of fastening structures and comprises a screw head, a screw rod is arranged on the outer surface of the lower end of the screw head, threads are arranged on the outer surface of the upper end of the screw rod, and a thick rod is arranged on the outer wall of the upper side of the screw rod. A fastening groove is formed in the inner wall of the upper end of the screw head, an expansion ring is arranged on the outer wall of the thick rod, an anti-skid ring is arranged on the inner wall of the expansion ring, a plurality of sets of hook claws are arranged on the inner wall of the periphery of the expansion ring, and the screw rod and the hook claws are connected through the expansion ring. According to the high-strength anti-loose precise screw fastening structure, the thick rod can abut against the ejector block arranged on the inner wall through the arranged hook claw, so that the thick rod moves towards the outer side, a supporting rod is formed for the inner wall of the installation screw hole, the grabbing force is increased, and the situation that the screw rod slides in the installation process, and consequently the installation position deviates can be avoided through the arranged anti-skid ring.

Description

Technical Field

[0001] The utility model relates to the technical field of fastening structures, in particular to a high-strength anti-loosening precision screw fastening structure. Background Art

[0002] Screws are tools that use the physics and mathematical principles of the circular rotation of the inclined surface of an object and the friction force to gradually tighten objects and machine parts. Screws are tools that use the physics and mathematical principles of the circular rotation of the inclined surface of an object and the friction force to gradually tighten objects and machine parts. They are the most common fasteners and are widely used in all walks of life. They generally include a screw head and a screw, and are mostly made of metal.

[0003] When the existing fastening structure is installed and used, if the installation equipment vibrates and is dislocated, the internal thread of the screw sleeve may cut the screw rod, causing damage to the rod and easily causing the screw to break. At the same time, the weight of the entire non-detachable assembly is large, which greatly restricts the installation and use, bringing certain adverse effects to people's use process. In order to solve the shortcomings of the existing technology, we propose a high-strength anti-loosening precision screw fastening structure. Utility Model Content

[0004] The main purpose of the utility model is to provide a high-strength anti-loosening precision screw fastening structure, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A high-strength anti-loosening precision screw fastening structure comprises a screw head, a screw rod is arranged on the lower outer surface of the screw head, a thread is arranged on the upper outer surface of the screw rod, a thick rod is arranged on the upper outer wall of the screw rod, a fastening groove is arranged on the upper inner wall of the screw head, an expansion ring is arranged on the outer wall of the thick rod, an anti-slip ring is arranged on the inner wall of the expansion ring, a plurality of groups of hooks are arranged on the inner wall around the expansion ring, and the screw rod and the hooks are connected by an expansion ring.

[0007] Preferably, a gasket is provided on the outer wall of the expansion ring, a first screw hole and a second screw hole are provided on the inner wall of the gasket, the expansion ring and the gasket are connected by using the first screw hole, a connecting ring is provided on the inner wall of the second screw hole, an anti-loosening ring is provided on the outer surface of the lower end of the connecting ring, the gasket and the anti-loosening ring are connected by using a connecting ring, and a reinforcing nail is provided on the inner wall of the connecting ring.

[0008] Preferably, the connection between the screw head and the screw rod is seamless, the outer wall of the screw rod is a precision thread, the inner wall of the expansion ring is provided with a connecting groove, and the expansion ring is detachably connected to the anti-slip ring through the provided connecting groove.

[0009] Preferably, a connecting groove is provided on the inner wall of the expansion ring, and the expansion ring is detachably connected to the hook claw via the provided connecting groove.

[0010] Preferably, a first screw hole is provided on the inner wall of one side of the gasket, and the gasket is detachably connected to the expansion ring through the provided first screw hole.

[0011] Preferably, a second screw hole is provided on the inner wall of the other side of the gasket, and the gasket is detachably connected to the connecting ring through the provided second screw hole.

[0012] Beneficial Effects

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. In the utility model, the hook claw is provided, which can support the top block provided on the inner wall through the thick rod, so as to move outward to form a support rod for the inner wall of the installation screw hole, thereby increasing the gripping force. The anti-slip ring is provided to prevent the screw rod from sliding during installation, resulting in displacement of the installation position.

[0015] 2. In the present invention, the reinforcing nails are provided to reinforce the screw rod and the gasket, so as to prevent the screw rod from loosening and falling off due to friction between the thread and the screw teeth in the installation screw hole caused by vibration or the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the anti-loosening ring structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the gasket structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the expansion ring structure of the utility model.

[0020] In the figure: 1. screw head; 2. screw rod; 3. thread; 4. thick rod; 5. gasket; 6. reinforcement nail; 7. anti-loosening ring; 8. first screw hole; 9. second screw hole; 10. expansion ring; 11. anti-slip ring; 12. hook; 13. connecting ring; 14. fastening groove. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1-4As shown, a high-strength anti-loosening precision screw fastening structure comprises a screw head 1, a screw rod 2 is arranged at the lower end of the screw head 1, a thread 3 is arranged on the outer wall of the lower side of the screw rod 2, a thick rod 4 is arranged on the outer wall of the upper side of the screw rod 2, and a fastening groove 14 is arranged on the inner wall of the upper end of the screw head 1. After the flat-head screwdriver is attached to the inner wall of the fastening groove 14, the fastening groove 14 is rotated, thereby rotating the screw head 1, and the screw head 1 drives the screw rod 2 at the lower end to rotate, and then the thread 3 can be rotated with the thread in the installation threaded hole, so that the screw can be installed, an expansion ring 10 is arranged on the outer wall of the thick rod 4, a gasket 5 is arranged on the outer wall of the expansion ring 10, an anti-slip ring 11 is arranged on the inner wall of the expansion ring 10, and hook claws 12 are arranged on the inner wall of each group of hook claws 12. A group of top blocks are arranged on the inner wall, and when the thread 3 drives the screw rod 2 When moving downward, the thick rod 4 will enter the inner wall of the expansion ring 10 and fit it, so that the thick rod 4 will push the hook claw 12 outward through the top block, so that the hook claw 12 can hook the inner wall of the threaded hole, thereby ensuring that the screw will not fall off due to vibration and other reasons after installation. A first screw hole 8 and a second screw hole 9, one large and one small, are respectively provided on both sides of the gasket 5. The inner wall of the second screw hole 9 is connected with a connecting ring 13, and an anti-loosening ring 7 is provided at the lower end of the connecting ring 13. A reinforcing nail 6 is provided on the inner wall of the connecting ring 13. When the precision screw and the screw hole are installed, the reinforcing nail 6 can be installed next to the screw rod 2, so as to reinforce the screw rod 2 and the gasket 5. After the reinforcing nail 6 is installed next to the screw rod 2, the anti-loosening ring 7 will also be hooked on the inner wall of the mounting hole through the reinforcing nail 6, thereby ensuring the stability of the reinforcing nail 6 and preventing the reinforcing nail 6 from loosening.

[0023] How it works

[0024] It should be noted that the utility model is a high-strength anti-loosening precision screw fastening structure. When in use, a screw rod 2 is provided at the lower end of the screw head 1, a thread 3 is provided on the outer wall of the lower side of the screw rod 2, a thick rod 4 is provided on the outer wall of the upper side of the screw rod 2, and a fastening groove 14 is provided on the inner wall of the upper end of the screw head 1. After the flat-head screwdriver is attached to the inner wall of the fastening groove 14, the fastening groove 14 is rotated, thereby rotating the screw head 1, and the screw head 1 drives the screw rod 2 at the lower end to rotate, and then the thread 3 can be rotated with the thread in the installation threaded hole, so that the screw can be installed, an expansion ring 10 is provided on the outer wall of the thick rod 4, a gasket 5 is provided on the outer wall of the expansion ring 10, an anti-slip ring 11 is provided on the inner wall of the expansion ring 10, and hook claws 12 are provided on the inner wall of each group of hook claws 12. A group of top blocks are provided. When the thread 3 drives When the screw rod 2 moves downward, the thick rod 4 will enter the inner wall of the expansion ring 10 and fit it, so that the thick rod 4 will push the hook claw 12 outward through the top block, so that the hook claw 12 can hook the inner wall of the threaded hole, thereby ensuring that the screw will not fall off due to vibration and other reasons after installation. A first screw hole 8 and a second screw hole 9, one large and one small, are respectively provided on both sides of the gasket 5. The inner wall of the second screw hole 9 is connected with a connecting ring 13, and an anti-loosening ring 7 is provided at the lower end of the connecting ring 13. A reinforcing nail 6 is provided on the inner wall of the connecting ring 13. When the precision screw and the screw hole are installed, the reinforcing nail 6 can be installed next to the screw rod 2, so as to reinforce the screw rod 2 and the gasket 5. After the reinforcing nail 6 is installed next to the screw rod 2, the anti-loosening ring 7 will also be hooked on the inner wall of the installation hole through the reinforcing nail 6, thereby ensuring the stability of the reinforcing nail 6 and preventing the reinforcing nail 6 from loosening.

[0025] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A high-strength anti-loosening precision screw fastening structure, comprising a screw head (1), characterized in that: The lower outer surface of the screw head (1) is provided with a screw rod (2), the upper outer surface of the screw rod (2) is provided with a thread (3), the upper outer wall of the screw rod (2) is provided with a thick rod (4), the upper inner wall of the screw head (1) is provided with a fastening groove (14), the outer wall of the thick rod (4) is provided with an expansion ring (10), the inner wall of the expansion ring (10) is provided with an anti-slip ring (11), the inner wall around the expansion ring (10) is provided with multiple groups of hook claws (12), and the screw rod (2) and the hook claws (12) are connected by the expansion ring (10).

2. A high-strength anti-loosening precision screw fastening structure according to claim 1, characterized in that: The outer wall of the expansion ring (10) is provided with a gasket (5), and the inner wall of the gasket (5) is provided with a first screw hole (8) and a second screw hole (9). The expansion ring (10) and the gasket (5) are connected by using the first screw hole (8), and the inner wall of the second screw hole (9) is provided with a connecting ring (13). The outer surface of the lower end of the connecting ring (13) is provided with an anti-loosening ring (7). The gasket (5) and the anti-loosening ring (7) are connected by using the connecting ring (13), and the inner wall of the connecting ring (13) is provided with a reinforcing nail (6).

3. A high-strength anti-loosening precision screw fastening structure according to claim 1, characterized in that: The connection between the screw head (1) and the screw rod (2) is seamless, the outer wall of the screw rod (2) is a precision thread, the inner wall of the expansion ring (10) is provided with a connection groove, and the expansion ring (10) is detachably connected to the anti-slip ring (11) through the provided connection groove.

4. The high-strength anti-loosening precision screw fastening structure according to claim 1, characterized in that: The inner wall of the expansion ring (10) is provided with a connection groove, and the expansion ring (10) is detachably connected to the hook claw (12) via the provided connection groove.

5. The high-strength anti-loosening precision screw fastening structure according to claim 2, characterized in that: A first screw hole (8) is provided on the inner wall of one side of the gasket (5), and the gasket (5) is detachably connected to the expansion ring (10) through the provided first screw hole (8).

6. A high-strength anti-loosening precision screw fastening structure according to claim 2, characterized in that: A second screw hole (9) is provided on the inner wall of the other side of the gasket (5), and the gasket (5) is detachably connected to the connecting ring (13) through the provided second screw hole (9).

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