A counterweight screw of a mosaic structure

Abstract

The utility model relates to a counterweight screw, especially a counterweight screw with inlay structure, which comprises a screw body and a counterweight inlay piece. The screw body is made of a metal material with low density, has a screw structure as a whole, is provided with external threads on the outer periphery, and is provided with an inner hole groove in the interior along the axial direction for accommodating the counterweight inlay piece. The counterweight inlay piece is made of a metal material with high density and is embedded and fixed in the inner hole groove, so that the counterweight function is mainly provided by the counterweight inlay piece. By arranging the counterweight inlay piece in the interior of the screw body, the reasonable combination of different materials is realized without changing the outer shape size and the mounting mode of the counterweight screw, the material cost is effectively reduced, and the adaptability and the use flexibility of the counterweight screw in different application scenarios are improved. The utility model has simple structure, is stable and reliable, and is suitable for relevant assembly occasions requiring counterweight adjustment.

Description

Technical Field

[0001] This utility model relates to the field of counterweight screw technology, specifically to a counterweight screw with an inlay structure. Background Technology

[0002] In sports equipment, machinery, and related assembly structures, screws, in addition to their connecting and fixing functions, also require a certain counterweight function in some applications, such as adjusting the overall weight distribution, balance, or operational stability of the equipment. Therefore, counterweight screws, as structural components that combine both connecting and counterweight functions, are widely used in related fields.

[0003] Most existing counterweight screw structures adopt an integral design, that is, the screw body is directly machined from a high-density metal material to give it the required weight. Although this type of structure is simple in form, it usually requires the use of a high-density, high-cost metal material, such as tungsten alloy or similar high-density alloy. This not only increases the material cost, but also requires more sophisticated equipment and processes during manufacturing, increasing manufacturing costs and processing difficulty.

[0004] Furthermore, the counterweight capacity of existing integral counterweight screws mainly depends on the density and overall dimensions of the material itself. Once the screw's dimensions are determined, its weight is essentially fixed, making it difficult to achieve flexible adjustments while maintaining the screw's shape and installation method. When facing different counterweight requirements, this structure often requires redesigning or replacing the integral screw with one of different specifications, resulting in poor versatility and adaptability, which is not conducive to fine-tuning in actual use.

[0005] Meanwhile, since integral counterweight screws are usually made of a single material, the counterweight function is highly coupled with the connection structure. When it is necessary to balance structural strength, processing performance and counterweight accuracy, the material selection space is limited, and it is easy to form a trade-off between cost, weight or processing performance.

[0006] Therefore, we urgently need to design a counterweight screw with an interlocking structure to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to provide a counterweight screw with an interlocking structure to address the aforementioned shortcomings in the technology.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a counterweight screw with an interlocking structure, comprising: The screw body is made of a first material and has an overall screw structure with external threads on its outer periphery for installation and connection. A counterweight insert, said counterweight insert being made of a second material; The screw body has an inner groove for accommodating the counterweight insert. The counterweight insert is embedded and fixed in the inner groove, so that the counterweight function is provided by the counterweight insert.

[0009] As a preferred embodiment of this invention, the first material is a metallic material with a lower density than the second material.

[0010] As a preferred embodiment of this invention, the first material is any one of stainless steel, ordinary carbon steel, or aluminum alloy, and the second material is tungsten alloy, molybdenum alloy, or other high-density metal material.

[0011] As a preferred embodiment of this utility model, the inner groove is located at one end or the middle of the screw body along the axial direction.

[0012] As a preferred embodiment of this utility model, the inner hole groove is a regular geometric hole groove that extends axially, and is a cylindrical hole groove or a rectangular hole groove.

[0013] As a preferred embodiment of this utility model, the counterweight insert is fixed in the inner groove by at least one of the following methods: interference fit, adhesive fixation, welding fixation, or mechanical limiting.

[0014] Compared to existing integral counterweight screws, this invention features an internal groove within the screw body, into which a counterweight insert made of high-density material is embedded. This separates the counterweight function from the screw body structure, achieving effective centralization and rational allocation of the counterweight function without altering the screw's external dimensions or installation method. This structural design reduces the amount of high-density material used while ensuring screw connection strength and reliability, thus effectively lowering material costs.

[0015] This invention uses a low-density metal material as the screw body and a high-density counterweight insert to achieve the required counterweight. Compared with a counterweight screw made entirely of high-density metal material, the material selection is more flexible while meeting the same counterweight requirements, which helps to reduce processing difficulty and manufacturing costs, and at the same time improves product consistency and stability.

[0016] Furthermore, by changing the size or material type of the counterweight insert, different counterweight requirements can be met while maintaining the main screw structure. This avoids the problem of frequently replacing different specifications of the overall screw due to changes in counterweight, as is common in existing technologies, thus improving the versatility and adaptability of the counterweight screw. The counterweight insert is fixed in the inner groove, ensuring the overall structure is stable and reliable, without affecting the normal installation and use of the screw. It is suitable for applications requiring high counterweight accuracy and structural stability. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Hole slot, 2. Screw body, 3. Inner hole slot, 4. Counterweight insert. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0021] like Figure 1 and Figure 2 As shown, this embodiment provides a counterweight screw with an interlocking structure. The counterweight screw mainly includes a screw body 2 and a counterweight insert 4 disposed inside the screw body 2.

[0022] The screw body 2 is made of a first material and has an overall screw structure. Its outer circumference is provided with external threads for installation and connection with external components. One end of the screw body 2 has a structure for tool operation, with a slot 1 for inserting a screwdriver, allowing the counterweight screw to be tightened using a tool during installation or disassembly. The screw body 2 has an axially oriented inner groove 3 for accommodating the counterweight insert 4.

[0023] The counterweight insert 4 is made of a second material with a higher density than the first material, thus the counterweight function is primarily provided by the counterweight insert 4. In this embodiment, the first material can be stainless steel or ordinary carbon steel, and the second material can be a high-density metal such as tungsten alloy or molybdenum alloy. This material combination effectively improves the counterweight capacity per unit volume while ensuring the overall structural strength and reliability of the counterweight screw.

[0024] like Figure 1As shown, the inner groove 3 is located at one end or the middle of the screw body 2 along the axial direction. The inner groove 3 is a regular geometric groove extending axially, and its specific shape can be a cylindrical groove or a rectangular groove to match the shape of the counterweight insert 4. Before assembly, the counterweight insert 4 is separated from the screw body 2; during assembly, the counterweight insert 4 is inserted into the inner groove 3 along the axial direction, so that the counterweight insert 4 is stably set inside the screw body 2.

[0025] like Figure 2 As shown, after the counterweight insert 4 is installed, it is fixed in the inner groove 3, forming a counterweight screw assembly with an inlaid structure. The counterweight insert 4 can be fixedly connected to the inner groove 3 by at least one of the following methods: interference fit, adhesive fixation, welding fixation, or mechanical limiting, thereby ensuring that the counterweight insert 4 does not loosen, fall off, or shift during actual use, and ensuring the structural stability and counterweight reliability of the counterweight screw.

[0026] With the above structural design, the counterweight screw in this embodiment concentrates the counterweight function in the counterweight insert 4, while the screw body 2 mainly undertakes the connection and installation functions. Without changing the external dimensions and installation method of the counterweight screw, it realizes the reasonable combination of different materials and the effective realization of the counterweight function, which is suitable for relevant application occasions that require counterweight accuracy and structural reliability.

[0027] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A counterweight screw with an interlocking structure, characterized in that, include: The screw body is made of a first material and has an overall screw structure with external threads on its outer periphery for installation and connection. A counterweight insert, said counterweight insert being made of a second material; The screw body has an inner groove for accommodating the counterweight insert. The counterweight insert is embedded and fixed in the inner groove, so that the counterweight function is provided by the counterweight insert.

2. The counterweight screw with the inlay structure according to claim 1, characterized in that: The first material is a metallic material with a lower density than the second material.

3. The counterweight screw with the inlaid structure according to claim 2, characterized in that: The first material is either stainless steel or ordinary carbon steel, and the second material is either a tungsten alloy or a molybdenum alloy.

4. The counterweight screw with the inlay structure according to claim 1, characterized in that: The inner groove is located at one end or the middle of the screw body along the axial direction.

5. The counterweight screw with the inlay structure according to claim 1, characterized in that: The inner groove is a regular geometric groove that extends axially, and can be a cylindrical groove or a rectangular groove.

6. The counterweight screw with the inlay structure according to claim 1, characterized in that: The counterweight insert is fixed in the inner groove by at least one of the following methods: interference fit, adhesive fixation, welding fixation, or mechanical limiting.

7. The counterweight screw with the inlaid structure according to claim 1, characterized in that: The screw body has a slot for inserting a screwdriver at one end away from the inner hole groove.

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