Double-finger force application pull ring wire saw structure

Abstract

The utility model relates to the technical field of fret saw tools, in particular to a double-finger force application pull ring fret saw structure which comprises a handle part, a connecting part and a fret saw part. The handle adopts a Y-shaped design, and a circular ring is arranged at the tail end and is matched with fingers to apply force; the connecting part is fixed with the handle and the fret saw through a high-strength metal piece, and a double-fixing device is provided; the fretsaw is of a closed annular structure and is made of high-carbon steel, and the surface of the fretsaw is polished to reduce friction resistance. The cutting efficiency and safety can be improved through uniform force application and stable connection, meanwhile, portability is enhanced through lightweight design, and the cutting device is suitable for various complex scenes.

Description

A two-finger force-applying pull ring saw structure Technical Field

[0001] This utility model belongs to the field of cutting tool technology, specifically a two-finger force-applying pull ring saw structure. Background Technology

[0002] In modern industry and daily life, wire saws are a common cutting tool widely used in the processing and finishing of materials such as wood, plastics, and metals. Traditional wire saws are typically designed for single-handed operation, with the user pulling the saw with their fingers. However, this single-handed operation method has significant drawbacks, such as uneven force application, poor operational stability, and hand fatigue after prolonged use. Furthermore, the pull ring design of existing wire saws is mostly a single structure, which cannot fully meet the operational needs of different scenarios, especially when high precision or large pulling force is required, making it difficult for operators to balance efficiency and safety. Meanwhile, the existing two-finger force application design is rarely used in wire saw construction and generally suffers from complex structures, high manufacturing costs, and inconvenience in use, limiting its promotion and practical application. Therefore, there is an urgent need for a wire saw design that can effectively improve the operating experience, enhance the uniformity and stability of force application, solve the above-mentioned technical problems, and meet users' needs for efficient and convenient tools. Summary of the Invention

[0003] This invention addresses the problems of uneven force application, insufficient stability, and poor portability in existing wire saw tools by proposing a two-finger force-applying pull-ring wire saw structure. This structure, through its unique handle design and connection method, significantly improves the uniformity of force application and cutting efficiency, while also ensuring the tool's safety and portability.

[0004] This utility model provides a two-finger force-applying pull ring wire saw structure, including a handle, a connecting part, and a wire saw part. The handle adopts a Y-shaped design, with a circular ring at each end of its two branches for accommodating the user's fingers for insertion and force application. Furthermore, the inner diameter of the circular rings is set between 15mm and 20mm to fit the average size of an adult finger. The handle is made entirely of blue plastic material with an anti-slip texture on its surface. The anti-slip texture is distributed in a cross-grid pattern, with each grid unit having a side length of 2mm, thereby increasing friction during grip and preventing slippage. Specifically, the total length of the handle ranges from 150mm to 180mm, and the angle between the branches is 60° to 75°, allowing users of different hand sizes to hold it stably and avoiding hand fatigue caused by prolonged use.

[0005] Furthermore, the connecting portion is constructed of high-strength metal connectors, which are threadedly fixed to both the handle and the wire saw portion. The thread diameter of the metal connectors ranges from 3mm to 5mm, and the thread depth ranges from 5mm to 8mm, ensuring a secure connection. Specifically, the surface of the metal connectors is anodized, forming a protective layer with a thickness of 0.02mm to 0.05mm to enhance corrosion resistance. In addition, the metal connectors contain internal elastic washers with a thickness of 0.5mm to 1mm to alleviate stress concentration caused by uneven force distribution, further improving the reliability of the connection.

[0006] Specifically, the wire saw portion is made of high-strength steel wire with a diameter ranging from 1mm to 1.5mm. The surface is polished to a roughness Ra value of less than 0.4μm, thereby reducing frictional resistance during cutting. The wire saw has a closed-loop structure, with both ends fixedly connected to two branches of the handle via metal connectors, forming a complete cutting loop. Furthermore, the total length of the wire saw ranges from 800mm to 1200mm to meet the needs of different cutting scenarios. The wire saw is made of high-carbon steel with a carbon content of 0.8% to 1.2%, and after heat treatment, its hardness reaches HRC50 to HRC55, thus possessing excellent wear resistance and tensile strength.

[0007] This utility model of a two-finger force-applying pull-ring wire saw involves the user inserting two fingers into the two circular rings on the handle and pulling the saw to perform the cutting operation. S1: The user first inserts their fingers into the circular rings, adjusting their position for a comfortable grip; S2: Both hands work together to apply force, causing the wire saw to reciprocate across the target material; S3: The user adjusts the cutting angle and direction according to actual needs to complete the cutting task. Through these steps, the user can apply force evenly, avoiding cutting deviations caused by excessive force on one side. In particular, the closed-ring structure of the wire saw allows for flexible operation at different angles, adapting to various complex cutting scenarios.

[0008] Furthermore, the overall weight of this two-finger force-applying pull ring saw ranges from 200g to 300g, making it easy to carry and store. The material density of the handle is 1.2g / cm³. 3 Up to 1.5g / cm 3 The compact design allows the tool to maintain sufficient strength while remaining lightweight. In particular, the gap between the two branches of the handle can be used to store the wire saw, and the overall size of the tool when stored does not exceed 180mm × 50mm × 30mm, making it suitable for outdoor activities or emergency rescue.

[0009] Specifically, to improve the safety performance of the tool, this utility model features a double-fixing device at the connection points of both ends of the wire saw. The double-fixing device comprises a threaded connection and a snap-lock mechanism, with the snap-lock mechanism having a locking force ranging from 50N to 80N, effectively preventing the wire saw from falling off during use. Furthermore, the anti-slip texture on the handle surface not only increases friction but also provides a certain degree of cushioning, reducing operational errors caused by sweaty hands or slippery environments.

[0010] The beneficial effects of this utility model are as follows: the Y-shaped handle design and circular ring force application structure achieve uniform force distribution, improving cutting efficiency and accuracy; the high-strength metal connectors and double fixing devices enhance the tool's stability and safety; and the lightweight materials and compact design improve the tool's portability. Furthermore, the closed-loop structure and high-wear-resistant material selection of the wire saw enable it to perform excellently in various cutting scenarios, meeting users' needs for multi-functional tools. Attached Figure Description

[0011] Figure 1 is a schematic diagram of the overall invention.

[0012] Figure 2 is a schematic diagram of the handle portion of this utility model;

[0013] Figure 3 is a structural schematic diagram of the metal connector of this utility model;

[0014] Figure 4 is a schematic diagram of the structure of the wire saw of this utility model.

[0015] The attached figures are labeled as follows:

[0016] 1. Handle section; 2. Circular ring; 3. Anti-slip texture; 4. Metal connector; 5. Threaded fixing structure;

[0017] 6. Wire saw section; 7. Closed ring structure; 8. Elastic washer; 9. Double fixing device. Detailed Implementation

[0018] This utility model relates to a two-finger force-applying pull ring wire saw structure, the detailed embodiment of which is described in conjunction with Figures 1 to 4. Figure 1 is an overall schematic diagram of this utility model, clearly showing the composition of the handle part 1, circular ring 2, anti-slip texture 3, metal connector 4, threaded fixing structure 5, wire saw part 6, closed ring structure 7, elastic washer 8, and double fixing device 9. In this embodiment, the handle part 1 adopts a Y-shaped design, with a circular ring 2 at each end of its two branches for accommodating the user's fingers for insertion and force application. The inner diameter of the circular ring 2 is set to 15mm to 20mm to fit the average size of adult fingers, ensuring stable grip for users with different hand shapes. The handle is made entirely of blue plastic material, with an anti-slip texture 3 on its surface. The anti-slip texture 3 is distributed in a cross-grid pattern, with each grid unit having a side length of 2mm, thereby increasing friction during gripping and preventing slippage. The total length of the handle ranges from 150mm to 180mm, and the angle between the branches is 60° to 75°, preventing hand fatigue during prolonged use.

[0019] The connection is achieved through a high-strength metal connector 4, which is threaded to both the handle part 1 and the wire saw part 6. The thread diameter of the metal connector 4 ranges from 3mm to 5mm, and the thread depth ranges from 5mm to 8mm, ensuring a secure connection. The surface of the metal connector 4 is anodized, forming a protective layer with a thickness of 0.02mm to 0.05mm to enhance corrosion resistance. An elastic washer 8, with a thickness of 0.5mm to 1mm, is provided inside the metal connector 4 to alleviate stress concentration caused by uneven force distribution and improve connection reliability. Figure 3 shows in detail the connection between the metal connector 4 and the threaded fixing structure 5, where the threaded fixing structure 5 is designed with standard metric threads to ensure high precision and stability during assembly.

[0020] The wire saw section 6 is made of high-strength steel wire with a diameter ranging from 1mm to 1.5mm. Its surface is polished to a roughness Ra value of less than 0.4μm, reducing frictional resistance during cutting. The wire saw section 6 has a closed loop structure 7, with both ends fixedly connected to the two branches of the handle via metal connectors 4, forming a complete cutting loop. The total length of the wire saw section 6 ranges from 800mm to 1200mm, meeting the needs of various cutting scenarios. The material of the wire saw section 6 is high-carbon steel with a carbon content of 0.8% to 1.2%, achieving a hardness of HRC50 to HRC55 after heat treatment, possessing excellent wear resistance and tensile strength. Figure 4 shows the specific structure of the wire saw section 6, where the closed loop structure 7 allows for flexible operation at different angles, adapting to various complex cutting scenarios.

[0021] When using the two-finger pull-ring wire saw of this invention, the user inserts two fingers into the two circular rings 2 of the handle and pulls the wire saw part 6 to perform the cutting operation. S1: The user first inserts their fingers into the circular rings 2 and adjusts their finger position to ensure a comfortable grip. The design of the inner diameter range of the circular rings 2 and the anti-slip texture 3 allows the user to easily find a suitable grip angle, while avoiding operational errors caused by sweaty or slippery conditions. S2: Both hands work together to apply force, causing the wire saw part 6 to reciprocate on the target material. The closed-ring structure 7 and high-carbon steel material of the wire saw part 6 ensure sufficient strength and wear resistance during cutting, reducing wear caused by frequent use. S3: Adjust the cutting angle and direction according to actual needs to complete the cutting task. Through the above steps, the user can apply force evenly in different cutting scenarios, avoiding cutting deviations caused by excessive force on one side.

[0022] The overall weight of this two-finger force-applying pull ring saw ranges from 200g to 300g, making it easy to carry and store. The material density of the handle part 1 is 1.2g / cm³. 3 Up to 1.5g / cm 3 The compact structural design achieves both lightweight construction and sufficient strength. The gap between the two branches of the handle can be used to store the wire saw section 6. When folded, the overall dimensions of the tool do not exceed 180mm × 50mm × 300mm, making it suitable for outdoor activities or emergency rescue. Figure 2 shows the specific design of the handle section 1, where the Y-shaped structure and the angled design between the branches balance operational comfort and portability.

[0023] To improve the safety of the tool, this utility model incorporates a double-fixing device 9 at the connection points of both ends of the wire saw. The double-fixing device 9 comprises a threaded connection and a snap-lock mechanism, with the snap-lock mechanism having a locking force range of 50N to 80N, effectively preventing the wire saw from falling off during use. Figure 3 details the structure of the double-fixing device 9, where the snap-lock mechanism design further enhances tool safety by increasing the locking force range. Furthermore, the anti-slip texture 3 on the handle surface not only increases friction but also provides a certain degree of cushioning, reducing operational errors caused by sweaty or slippery conditions.

[0024] This embodiment achieves the function of a two-finger force-applying pull-ring wire saw through specific structural design and technical parameters. The Y-shaped handle design and circular ring force-applying structure achieve uniform force distribution, improving cutting efficiency and accuracy. The high-strength metal connector 4 and double fixing device 9 enhance the tool's stability and safety. Lightweight materials and compact design improve the tool's portability. The closed-ring structure 7 of the wire saw part 6 and the selection of highly wear-resistant materials make it perform excellently in various cutting scenarios, meeting users' needs for multi-functional tools. Figures 1 to 4 comprehensively illustrate the various components of this utility model and their interrelationships. Combined with the above embodiments, the technical solution of this utility model can be fully realized and applied in actual operation.

Claims

1. A two-finger force-applying pull ring saw structure, characterized in that... The device includes a handle (1), a connecting part, and a wire saw (6). The handle (1) is Y-shaped, with a circular ring (2) at each of its two branches. The inner diameter of the circular ring (2) ranges from 15mm to 20mm. The surface of the handle (1) is provided with a cross-grid anti-slip texture (3). The side length of the grid unit of the anti-slip texture (3) is 2mm. The total length of the handle (1) ranges from 150mm to 180mm, and the included angle between the branches is from 60° to 75°. The connecting part is composed of a metal connector (4), which is connected to the handle (1) and the wire saw (6) respectively by a threaded fixing structure (5). The wire saw (6) is a closed ring structure (7) made of high-strength steel wire with a diameter range of 1mm to 1.5mm.

2. The double-finger force-applying pull ring saw structure as described in claim 1, characterized in that... The handle portion (1) is made of materials with a density range of 1.2 g / cm³. 3 Up to 1.5g / cm 3 It is made of blue plastic.

3. The double-finger force-applying pull ring saw structure as described in claim 2, characterized in that... The gap between the two branches of the handle part (1) is used to store the wire saw part (6), and the overall size of the tool in the stored state does not exceed 180mm×50mm×30mm.

4. The double-finger force-applying pull ring saw structure as described in claim 1, characterized in that... The thread diameter of the metal connector (4) ranges from 3 mm to 5 mm, and the thread depth ranges from 5 mm to 8 mm. The surface of the metal connector (4) is anodized to form a protective layer with a thickness of 0.02 mm to 0.05 mm.

5. The double-finger force-applying pull ring saw structure as described in claim 4, characterized in that... The metal connector (4) has an elastic washer (8) with a thickness of 0.5 mm to 1 mm inside.

6. The double-finger force-applying pull ring saw structure as described in claim 1, characterized in that... The material of the wire saw part (6) is high carbon steel with a carbon content of 0.8% to 1.2%, and the hardness reaches HRC50 to HRC55 after heat treatment. The total length of the wire saw part (6) ranges from 800mm to 1200mm.

7. The double-finger force-applying pull ring saw structure as described in claim 1, characterized in that... The two ends of the wire saw part (6) are connected to the handle part (1) through a double fixing device (9). The double fixing device (9) includes a threaded connection and a snap-locking mechanism. The locking force of the snap-locking mechanism is in the range of 50N to 80N.

8. The double-finger force-applying pull ring saw structure as described in claim 1, characterized in that... The overall weight ranges from 200g to 300g.

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