Anti-deformation internal plum blossom screw fastener

Abstract

The utility model relates to the field of internal plum blossom screws, and discloses an anti-deformation internal plum blossom screw fastener which comprises a screw, the top of the screw is fixedly connected with a nut, the outer wall of the screw is in threaded connection with a nut, and an anti-loosening assembly is arranged in the nut. The anti-loosening assembly comprises a conical column, the conical column is slidably connected into the nut, a limiting groove is formed in the nut, a connecting rod is fixedly connected to the bottom of the conical column, a pull ring is fixedly connected to one end of the connecting rod, the connecting rod is slidably connected into the nut, and a reset assembly is arranged on the outer wall of the connecting rod. A limiting assembly is arranged at the bottom of the conical column. According to the inner plum blossom screw, the nut is rotated to be screwed on the screw, after the nut is rotated to be in place, the conical column can be embedded into the clamping groove preset in the workpiece, the nut is further locked by being embedded into the clamping groove through the conical column, the anti-loosening effect is achieved, the problem that a traditional inner plum blossom screw is prone to loosening due to vibration after being screwed is solved, and the fastening performance of the inner plum blossom screw is improved.

Description

Technical Field

[0001] This utility model relates to the field of internal Torx screws, and more particularly to anti-deformation internal Torx screw fasteners. Background Technology

[0002] With the increasing precision of mechanical structures and the development of industrial equipment towards higher strength, higher vibration, and higher reliability, fasteners, as crucial basic components connecting various parts, directly affect the stability and safety of the overall equipment. Among them, internal Torx screws are widely used in the automotive, aerospace, and precision equipment industries due to their excellent transmission performance and anti-slip capabilities. Especially in working environments with frequent disassembly and assembly, high-frequency vibration, or heavy loads, higher requirements are placed on the fastening reliability and deformation resistance of internal Torx screws.

[0003] In existing technologies, common internal Torx screws are generally made of uniform carbon steel or stainless steel, with their hardness enhanced through heat treatment. They are combined with a traditional internal Torx groove structure to achieve torque transmission and fastening. To improve anti-loosening performance, some designs add spring washers or use nylon locking rings to the threaded portion. For corrosion protection, electroplating or phosphating are often used to extend service life. However, these structures often still suffer from a difficulty in balancing strength and toughness, especially in high-intensity vibration environments, where insufficient material elasticity or stress concentration can easily lead to screw loosening or head damage.

[0004] However, existing technologies still have certain shortcomings. For example, traditional internal Torx screws are prone to loosening after being tightened under continuous vibration, especially when the workpiece does not have an additional locking structure. This can easily lead to loosening or even detachment of the connected parts, affecting the overall stability and safety of the device. Therefore, there is an urgent need for an improved internal Torx screw fastener structure that can combine anti-loosening performance and deformation resistance to improve stability and extend service life. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a deformation-resistant internal Torx screw fastener, which aims to improve the problem that traditional internal Torx screws are prone to loosening due to vibration after being tightened.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an anti-deformation internal Torx screw fastener, including a screw, a nut fixedly connected to the top of the screw, a nut threadedly connected to the outer wall of the screw, and an anti-loosening component provided inside the nut;

[0007] The anti-loosening component includes a conical column, which is slidably connected inside the nut. A limit groove is formed inside the nut. A connecting rod is fixedly connected to the bottom of the conical column. A pull ring is fixedly connected to one end of the connecting rod. The connecting rod is slidably connected inside the nut. A reset component is provided on the outer wall of the connecting rod. A limit component is provided at the bottom of the conical column.

[0008] As a further description of the above technical solution:

[0009] The reset assembly includes a spring, which is sleeved on the outer wall of the connecting rod. One end of the spring is fixedly connected to the bottom of the cone column, and the other end of the spring is fixedly connected to the inside of the nut.

[0010] As a further description of the above technical solution:

[0011] The limiting component includes a limiting plate, the top of which is fixedly connected to the bottom of the cone column, and the limiting plate is slidably connected inside the limiting groove.

[0012] As a further description of the above technical solution:

[0013] The nut has an inner perforated groove with a depth of 5mm.

[0014] As a further description of the above technical solution:

[0015] An anti-disassembly post is fixedly connected inside the nut, and the anti-disassembly post is used to prevent the screw from being disassembled.

[0016] As a further description of the above technical solution:

[0017] The screw has an inner core toughness bearing layer, and an outer hard protective layer is fixedly connected to the outer wall of the inner core toughness bearing layer.

[0018] As a further description of the above technical solution:

[0019] The outer wall of the outer hard protective layer is fixedly connected with an anti-corrosion and corrosion-resistant coating, the thickness of which is 1mm.

[0020] As a further description of the above technical solution:

[0021] The screw is composed of an inner core tough load-bearing layer, an outer hard protective layer, and an anti-corrosion and corrosion-resistant coating.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the nut is first rotated onto the screw. After it is in place, the conical column can be inserted into the preset slot on the workpiece, so that the nut is further locked by the conical column being inserted into the slot, thus achieving the effect of preventing loosening. This solves the problem that traditional internal Torx screws are easy to loosen after being tightened due to vibration, and improves the fastening performance of internal Torx screws.

[0024] 2. In this utility model, the screw is composed of an inner core tough bearing layer, an outer hard protective layer and an anti-corrosion and corrosion resistant coating. The depth of the inner Torx groove inside the top nut of the screw is 5mm, which can improve the anti-spinning effect of the inner Torx groove, thereby improving the strength of the screw. This solves the problem of poor strength and easy deformation of traditional screws, and improves the strength of the inner Torx screw. Attached Figure Description

[0025] Figure 1 This is a perspective view of the anti-deformation internal Torx screw fastener proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the nut structure of the anti-deformation internal Torx screw fastener proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the internal structure of the nut in the anti-deformation internal Torx screw fastener proposed in this utility model.

[0028] Figure 4 This is a schematic diagram of the anti-disassembly column structure of the anti-deformation internal Torx screw fastener proposed in this utility model;

[0029] Figure 5 This is a schematic diagram of the internal structure of the anti-deformation internal Torx screw fastener proposed in this utility model.

[0030] Legend:

[0031] 1. Screw; 2. Nut; 3. Nut; 4. Limiting groove; 5. Limiting plate; 6. Conical column; 7. Spring; 8. Connecting rod; 9. Pull ring; 10. Inner plum blossom groove; 11. Anti-dismantling column; 12. Inner core tough load-bearing layer; 13. Outer hard protective layer; 14. Anti-corrosion and corrosion resistant coating. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figures 1-3The present invention provides an embodiment of an anti-deformation internal Torx screw fastener, including a screw 1, a nut 2 fixedly connected to the top of the screw 1, the nut 2 being used to tighten the screw with a tool, a nut 3 being threadedly connected to the outer wall of the screw 1, the nut 3 serving to fasten the connecting structural components, and an anti-loosening component being provided inside the nut 3 to provide an additional locking function after the nut 3 is tightened to the position to prevent it from loosening in a vibrating environment.

[0034] The anti-loosening component includes a tapered column 6, which is slidably connected inside the nut 3. Under external force, the tapered column 6 can be inserted axially into a pre-set slot in the workpiece, achieving mechanical locking of the nut 3, thereby enhancing the stability of the connection and preventing loosening. A limit groove 4 is provided inside the nut 3 to limit the travel of the tapered column 6, preventing it from coming out of the nut 3 and ensuring the stable operation of the tapered column 6 within the structure. A connecting rod 8 is fixedly connected to the bottom of the tapered column 6, which is used to transmit the pulling force generated by the pull ring 9, driving the tapered column 6 to slide inside the nut 3. A pull ring 9 is fixedly connected to one end of the connecting rod 8, which can be pulled manually or by tools to control the insertion and withdrawal of the tapered column 6, enhancing the convenience of operation and control precision. The connecting rod 8 is slidably connected inside the nut 3 to ensure that it can move flexibly along the axial direction. The outer wall of the connecting rod 8 is provided with A reset component is provided to automatically push the cone column 6 back to its initial state after the pull ring 9 is released, preventing it from interfering with the installation process when not in use. The reset component includes a spring 7, which is sleeved on the outer wall of the connecting rod 8. One end of the spring 7 is fixedly connected to the bottom of the cone column 6, and the other end is fixedly connected to the inside of the nut 3. After compression, the spring 7 can provide an elastic reset force to keep the cone column 6 in the retracted position when not in operation. A limit component is provided at the bottom of the cone column 6 to further stabilize the movement of the cone column 6 and prevent it from axially deviating during operation. The limit component includes a limit plate 5, the top of which is fixedly connected to the bottom of the cone column 6, and the limit plate 5 is slidably connected inside the limit groove 4. Through the cooperation between the limit plate 5 and the limit groove 4, the vertical movement range of the cone column 6 is effectively limited, enhancing the reliability of the overall structure.

[0035] Reference Figure 4 and Figure 5The nut 2 has an internal spline groove 10, which is used to cooperate with a special tool to achieve efficient torque transmission, prevent slippage, and improve the stability of tightening or loosening the nut 2. The depth of the spline groove 10 is 5mm. The deep groove design can increase the contact area between the tool and the groove, reduce groove damage during tightening, and improve the overall anti-spinning performance. The nut 2 has an anti-tamper post 11 fixedly connected inside. The anti-tamper post 11 is used to prevent the screw 1 from being disassembled without authorization, enhance security and protection level, and prevent the critical structure from being illegally disassembled or tampered with. The screw 1 has an inner core toughness bearing layer 12. The inner core toughness bearing layer 12 plays the main role in bearing axial load and tensile force. It has good ductility and toughness, can effectively absorb impact force, avoid breakage due to excessive force, and improve the structural reliability of the screw. The outer wall of the inner core toughness bearing layer 12 is fixedly connected to The screw 1 has an outer hard protective layer 13, which protects the inner core and has high hardness and compressive strength, effectively resisting external extrusion and mechanical damage, and further improving the overall deformation resistance. The outer wall of the outer hard protective layer 13 is fixedly connected to an anti-corrosion and corrosion-resistant coating 14, which improves the durability of the screw 1 in humid and acidic / alkaline environments, prevents it from rusting or corroding, and ensures stable operation over a long period of time. The thickness of the anti-corrosion and corrosion-resistant coating 14 is 1mm. This thickness is set to balance the requirements of protective effect and not affecting the structural dimensions. It can effectively isolate corrosive media while ensuring that the shape accuracy of the screw 1 remains unchanged. The screw 1 is composed of an inner core tough load-bearing layer 12, an outer hard protective layer 13, and an anti-corrosion and corrosion-resistant coating 14. The three-layer structure complements each other, which can effectively enhance the anti-corrosion, protection, and impact resistance of the screw 1 while improving its strength.

[0036] Working principle: When using this anti-deformation internal Torx screw fastener, firstly, the nut 2 passes through the part to be fastened through the screw 1, then the nut 3 is turned and screwed onto the screw 1. After it is in place, the conical column 6 can be inserted into the preset slot on the workpiece, so that the nut 3 is further locked by the conical column 6 being inserted into the slot. When it is necessary to disassemble, the connecting rod 8 is pulled by the pull ring 9 to drive the conical column 6 to retract into the nut 3, and then the nut 3 can be removed, thus achieving the anti-loosening effect.

[0037] Screw 1 is composed of an inner core tough load-bearing layer 12, an outer hard protective layer 13, and an anti-corrosion and corrosion-resistant coating 14. The inner core tough load-bearing layer 12 is made of high-toughness alloy steel, ensuring good plasticity and fracture resistance. During the screw's stress or tightening process, it can effectively absorb energy and prevent overall fracture or permanent deformation. The outer hard protective layer 13 enhances the hardness and wear resistance of the screw's outer surface through heat treatment or coating technology. The anti-corrosion and corrosion-resistant coating 14 is treated with zinc-nickel alloy, electrophoresis, Dacromet, and other corrosion-resistant coatings to prevent metal fatigue or stress corrosion caused by environmental corrosion, and maintain structural strength and deformation resistance for a long time. The inner spline groove 10 inside the nut 2 at the top of screw 1 has a depth of 5mm, which can improve the anti-twisting effect of the inner spline groove 10. The anti-disassembly post 11 can prevent screw 1 from being disassembled arbitrarily through the nut 2, thereby improving the screw's strength.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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-deformation internal Torx screw fastener, comprising a screw (1), characterized in that: The top of the screw (1) is fixedly connected to a nut (2), and the outer wall of the screw (1) is threaded with a nut (3). The nut (3) is provided with an anti-loosening component inside. The anti-loosening component includes a conical column (6), which is slidably connected inside the nut (3). A limiting groove (4) is provided inside the nut (3). A connecting rod (8) is fixedly connected to the bottom of the conical column (6). A pull ring (9) is fixedly connected to one end of the connecting rod (8). The connecting rod (8) is slidably connected inside the nut (3). A reset component is provided on the outer wall of the connecting rod (8). A limiting component is provided at the bottom of the conical column (6).

2. The anti-deformation internal Torx screw fastener according to claim 1, characterized in that: The reset assembly includes a spring (7), which is sleeved on the outer wall of the connecting rod (8). One end of the spring (7) is fixedly connected to the bottom of the cone column (6), and the other end of the spring (7) is fixedly connected to the inside of the nut (3).

3. The anti-deformation internal Torx screw fastener according to claim 1, characterized in that: The limiting component includes a limiting plate (5), the top of which is fixedly connected to the bottom of the cone column (6), and the limiting plate (5) is slidably connected inside the limiting groove (4).

4. The anti-deformation internal Torx screw fastener according to claim 1, characterized in that: The nut (2) has an inner plum blossom groove (10) inside, and the depth of the inner plum blossom groove (10) is 5mm.

5. The anti-deformation internal Torx screw fastener according to claim 1, characterized in that: The nut (2) is internally fixedly connected to an anti-disassembly post (11), which is used to prevent the screw (1) from being disassembled.

6. The anti-deformation internal Torx screw fastener according to claim 1, characterized in that: The screw (1) has an inner core tough bearing layer (12) inside, and an outer hard protective layer (13) is fixedly connected to the outer wall of the inner core tough bearing layer (12).

7. The anti-deformation internal Torx screw fastener according to claim 6, characterized in that: The outer hard protective layer (13) has a corrosion-resistant coating (14) fixedly connected to its outer wall, and the corrosion-resistant coating (14) has a thickness of 1 mm.

8. The anti-deformation internal Torx screw fastener according to claim 1, characterized in that: The screw (1) is composed of an inner core tough load-bearing layer (12), an outer hard protective layer (13), and an anti-corrosion and corrosion-resistant coating (14).

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