Saw chain formed by assembling single parts and suitable for being matched with lithium electric saw and lithium battery saw

Abstract

The utility model discloses a saw chain suitable for being matched with a lithium electric saw, which is formed by assembling a single component, the saw chain consists of a plurality of saw teeth which are continuously hinged front and back, the base part of each saw tooth comprises a front side plane and a rear side plane which are opposite to each other, the front part of the front side plane is punched and thinned to form a front sunken area, and a chain shaft hole is punched in the front sunken area; the hole edge of the chain shaft hole is chamfered; the rear part of the rear side plane is punched and thinned to form a rear sunken area, and a cylindrical boss is arranged on the rear side plane where the rear sunken area is located and serves as a chain shaft; when the previous saw tooth is hinged with the next saw tooth, the chain shaft of the previous saw tooth is inserted into the chain shaft hole of the next saw tooth and then riveted, so that the lug boss turnup is filled into the chamfer of the chain shaft hole to form hinging; a concave part is arranged at the lower part between the chain shaft of the saw teeth and the chain shaft hole, and the saw teeth are assembled to form a complete and coherent saw chain transmission tooth structure; and compactness, high efficiency and durability improvement of the saw chain are achieved, and the saw chain is particularly suitable for the requirement of a small lithium electric saw for fine cutting.

Description

Technical Field

[0001] This utility model relates to a saw chain, and more particularly to a saw chain assembled from a single component that is suitable for use with a lithium-ion electric saw. Background Technology

[0002] Currently available lithium-ion electric saw chains can be used for sawing various materials such as branches, wood strips, boards, and plastic pipes and rods.

[0003] For example, CN216860022U is a saw chain suitable for lithium-ion electric saws, which includes a drive plate, a connecting plate and a blade. The two drive plates are connected by connecting plates located on both sides of them. The blades include a left blade and a right blade. The drive plates and connecting plates, as well as the drive plates and blades, are connected by chain shafts.

[0004] Existing lithium-ion electric saw chains are typically composed of stacked drive plates, connecting plates, and blades. They have large kerfs and a wide distance between the cutting teeth, making them unsuitable for cutting small, hollow, or thin materials. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a saw chain that is assembled from a single component and is suitable for use with a lithium-ion electric saw.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is: a saw chain assembled from a single component, suitable for use with a lithium-ion electric saw.

[0007] The saw chain is composed of multiple saw teeth that are continuously hinged together, each saw tooth including a base and a tip;

[0008] The base includes opposing front and rear planes. The front portion of the front plane is punched and thinned to form a front recessed region. The thickness of the base in the front recessed region is slightly less than half the thickness of the serrations. A chain shaft hole is punched in the front recessed region. The edge of the chain shaft hole is chamfered.

[0009] The rear portion of the rear side plane is thinned by stamping to form a rear recessed area, and a cylindrical boss is provided at the rear side plane where the rear recessed area is located as a chain shaft.

[0010] When the first saw tooth is hinged to the second saw tooth, the chain shaft of the first saw tooth is inserted into the chain shaft hole of the second saw tooth and then riveted to make the flange of the boss fill the chamfer of the chain shaft hole to form a hinge.

[0011] The lower part of the saw teeth between the chain shaft and the chain shaft hole is provided with a concave part, and the saw teeth are assembled to form a complete and continuous saw chain drive tooth structure.

[0012] A further preferred embodiment of this utility model is that the distance between the chain shaft of the saw teeth and the center of the chain shaft hole is set between 4.8mm and 5.5mm, and the base thickness of the saw teeth is set between 0.9mm and 1.5mm.

[0013] A further preferred embodiment of this utility model is as follows: the saw teeth include bent tooth tips, which are formed by bending from the upper end of the base to one side; each includes a tooth tip bent to the left, a tooth tip bent to the right, and a tooth tip in the middle.

[0014] A further preferred technical solution of this utility model is: each group of three saw teeth is divided into a left-bending tooth tip, a central tooth tip, and a right-bending tooth tip, or each group of three saw teeth is divided into a left-bending tooth tip, a right-bending tooth tip, and a central tooth tip; the arrangement order of each group of teeth in a saw chain is selected in one of these arrangements to maintain consistency.

[0015] A further preferred technical solution of this utility model is: the maximum distance between the tips of the teeth on the left and right sides after the serrations are bent is set to about 1.8-2 times the thickness of the tooth material.

[0016] A further preferred embodiment of this utility model is as follows: the upper part of the saw tooth is provided with a tooth tip and a material limiting tooth, the horizontal distance between the tooth tip and the material limiting tooth is 1.2-1.8mm, and the height difference between the tooth tip and the material limiting tooth is 0.25-0.35mm.

[0017] A further preferred embodiment of this invention is that the total thickness of the two serrations after assembly is not greater than the base thickness of the serrations.

[0018] A further preferred technical solution of this utility model is: the tooth tip bending is achieved by assembling planar tooth pieces into strips and then bending them into shape.

[0019] Another subject: a lithium battery saw, including the saw chain and sprockets described above.

[0020] A further preferred embodiment of this invention is that the teeth on the sprocket engage with the concave portions of the saw teeth, and as the sprocket rotates, the teeth sequentially embed into the concave portions of the corresponding saw teeth.

[0021] Compared with existing technologies, the advantages of this utility model are: the single-tooth micro saw chain integrates the functions of the drive blade, left and right cutters, connecting blade, and chain shaft into a single tooth, greatly simplifying the product structure compared to traditional saw chains composed of multiple stacked components. This integrated technology not only reduces the number of parts but also simplifies the assembly process, thereby significantly improving production efficiency. In the processing stage, the reduction of individual processing steps for multiple components lowers processing costs; in the assembly stage, the simplified assembly process reduces assembly time and labor costs. Furthermore, by reducing the number of parts, the risk of quality defects caused by component mismatch is reduced, further improving the consistency and reliability of product quality, thereby reducing overall production costs and enhancing the product's market competitiveness. Due to the reduced kerf size, the lithium battery life can be extended by approximately 100%.

[0022] The single-tooth micro saw chain optimizes cutting performance through a refined structure. The concave design between the chain axle and the axle hole, along with the precise fit between the chain axle and the axle hole, allows the saw chain to form a complete and continuous transmission tooth structure after assembly. This structure ensures the stability of the saw chain during high-speed operation, reduces vibration and noise, and thus improves cutting accuracy and efficiency. The saw chain has an extremely small kerf; a smaller kerf means less material loss and improved sawing efficiency. Furthermore, specific dimensions such as the material thickness of the teeth and the center distance between the chain axle and the axle hole make the saw chain perform exceptionally well when cutting small, hollow, or thin materials, broadening its application range and making it more suitable for use with small lithium-ion electric saws to meet diverse cutting needs.

[0023] This technical solution significantly enhances the durability and reliability of the saw chain by optimizing the structure and assembly method of the saw teeth. The precise fit between the chain axle and the chain axle hole, along with the riveting process that allows the boss to bevel and fill the chamfered area of ​​the chain axle hole, ensures a robust connection between the saw teeth. This robust hinged connection allows the saw chain to maintain stable performance during prolonged use and high-intensity cutting, reducing malfunctions caused by loose or damaged components. Simultaneously, the rational structural design and material selection also contribute to improving the saw chain's wear resistance, extending its service life, and reducing user operating costs and maintenance frequency. Furthermore, the precise dimensional design between the tooth tip and the limiting tooth not only ensures sawing speed but also prevents the tooth tip from cutting too deeply, increasing sawing resistance, further optimizing the saw chain's working efficiency and durability. Attached Figure Description

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0025] Figure 1 This is a schematic diagram of the lithium battery saw in this embodiment;

[0026] Figure 2 This is a schematic diagram of the saw chain structure in this embodiment. Figure 1 ;

[0027] Figure 3 This is a schematic diagram of the saw chain structure in this embodiment. Figure 2 ;

[0028] Figure 4 This is a schematic diagram of the saw chain structure in this embodiment. Figure 3 ;

[0029] Figure 5 This is a schematic diagram of the overall structure of the saw teeth in this embodiment. Figure 1 ;

[0030] Figure 6 This is a schematic diagram of the overall structure of the saw teeth in this embodiment. Figure 2 ;

[0031] Figure 7 This is a schematic diagram of the overall structure of the saw teeth in this embodiment. Figure 3 ;

[0032] Figure 8 This is a schematic diagram of the side structure of the saw teeth in this embodiment. Detailed Implementation

[0033] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0034] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it will not be further defined and explained in subsequent figures.

[0035] like Figure 1As shown, a lithium battery saw 100 includes a saw chain 101 and a sprocket 102. The saw chain 101 and the sprocket 102 are used in conjunction. The teeth 60 on the sprocket 102 engage with the concave portions 30 of the saw teeth 10 on the saw chain 101. As the sprocket 102 rotates, the teeth 60 are sequentially embedded into the concave portions 30 of the corresponding saw teeth 10 to achieve the transmission function.

[0036] like Figure 2 , Figure 3 As shown, the saw chain 101 is assembled from a single component and is suitable for use with a lithium-ion electric saw. The saw chain 101 consists of multiple saw teeth 10 that are continuously hinged front to back. Each saw tooth 10 includes a base 11 and a tooth tip 12. The front end of the base 11 has a stepped recessed area a1, the thickness of which is slightly less than half the overall thickness of the saw tooth 10. A chain shaft hole a2 is stamped in the recessed area a1, and the edge of the chain shaft hole a2 is chamfered. The rear end of the base 11 also has a similar stepped recessed area b1, and a cylindrical boss c is provided at the recessed area b1 as a chain shaft b2.

[0037] During assembly, the chain shaft b2 of the preceding saw tooth 10 is inserted into the chain shaft hole a2 of the following saw tooth 10 and then riveted, causing the boss c to bend and fill the chamfer of the chain shaft hole a2, thereby achieving the hinge connection between the saw teeth 10. In addition, a concave portion 30 is provided at the lower part between the chain shaft b2 of the saw tooth 10 and the chain shaft hole a2. This concave portion 30 is located at the edge of the base 11 and in the middle region of the base 11. After assembly, the saw teeth 10 form a complete and continuous saw chain drive tooth structure.

[0038] like Figures 5 to 8 As shown, the saw chain 101 in this embodiment has specific technical means to achieve efficient and stable mechanical linkage. The saw chain 101 is composed of multiple saw teeth 10 that are continuously hinged front and rear. The base 11 of each saw tooth 10 is provided with a front side plane 111 and a rear side plane 112 to ensure that it can be accurately aligned and achieve smooth transmission during assembly.

[0039] In the front part of the front side plane 111, a front recessed area a1 is formed by a precision stamping process. The thickness of the recessed area a1 is precisely calculated and is slightly less than half the overall thickness of the serration 10, thereby reducing material usage, lowering the overall weight, and improving transmission efficiency while ensuring structural strength.

[0040] Within the recessed area a1, a chain shaft hole a2 is punched out. It should be noted that the edge of the hole is chamfered. This technique not only facilitates the insertion of the chain shaft b2, but also guides the flange of the boss c during the riveting process, ensuring the accuracy and reliability of the assembly.

[0041] Correspondingly, a recessed area b1 is formed in the rear portion of the rear side plane 112 through a stamping process. A cylindrical boss c is provided in this recessed area b1, which serves as a chain axle b2 and is a key component for achieving the hinge connection between the saw teeth 10. During assembly, the chain axle b2 of the preceding saw tooth 10 is inserted into the chain axle hole a2 of the following saw tooth 10, followed by riveting to cause the boss c to bevel and fill the chamfer of the chain axle hole a2, forming a robust hinge structure. This design not only ensures a tight connection between the saw teeth 10 but also allows the saw chain 101 to drive smoothly when the sprocket 102 rotates, reducing friction and energy loss during transmission.

[0042] Based on the above-mentioned technical means, the saw chain 101 in this embodiment not only improves the cutting efficiency, but also enhances the durability and reliability of the saw chain, making it particularly suitable for tools like lithium electric saws that require high precision and efficiency.

[0043] Furthermore, in the saw chain 101 of this invention, a concave portion 30 is specially provided at the lower part between the chain shaft b2 and the chain shaft hole a2 of each saw tooth 10. This concave portion 30 is located at the edge of the base 11 and in the middle region of the base 11.

[0044] The shape and position of the concave portion 30 are carefully designed so that it can precisely match the teeth 60 on the sprocket 102. When the sprocket 102 rotates, the teeth 60 are sequentially engaged in the concave portions 30 of the corresponding saw teeth 10, thereby achieving smooth transmission of the saw chain.

[0045] This technology not only enhances the overall structural stability of the saw chain but also optimizes its transmission performance, enabling the saw chain to cooperate more efficiently with the sprocket 102 during operation, achieving smooth transmission. Through this unique structure, the concave portion 30 plays a crucial role in the saw chain's transmission process. It not only provides a precise meshing point for the sprocket teeth 60 but also reduces vibration and noise during transmission, thereby improving the saw chain's service life and cutting accuracy.

[0046] Preferably, the distance between the center of the chain shaft b2 of the saw tooth 10 and the center of the chain shaft hole a2 is set between 4.8mm and 5.5mm. A suitable center distance ensures a tighter and more stable meshing between the sprocket and the saw chain, reducing vibration and noise during transmission. This not only improves the transmission efficiency of the saw chain but also extends the service life of the sprocket and the saw chain. The base thickness of the saw tooth 10 is set between 0.9mm and 1.5mm; this thickness range ensures both the structural strength of the saw tooth 10 under high-intensity operation and the overall lightweight design of the saw chain 101. A moderate base thickness helps reduce material usage and production costs while maintaining the durability of the saw chain 101.

[0047] Preferably, the saw teeth 10 include bent tooth tips 12, which are formed by bending from the upper end of the base 11 to one side; the saw chain 101 includes tooth tips 12 bent to the left, tooth tips 12 bent to the right, and tooth tips 12 in the middle.

[0048] like Figure 4 As shown, every three serrations 10 are grouped into a left-bending tooth tip 12, a central tooth tip 12, and a right-bending tooth tip 12, or every three serrations 10 are grouped into a left-bending tooth tip 12, a right-bending tooth tip 12, and a central tooth tip 12. Of course, those skilled in the art can choose other arrangements.

[0049] To ensure the stability and consistency of the saw chain 101 during use, the arrangement order of each group of teeth in a saw chain 101 is selected from one particular arrangement and remains consistent. This consistency helps improve the overall performance of the saw chain 101 and reduces problems such as uneven cutting and uneven wear of the saw chain 101 caused by inconsistent arrangement. In this way, the saw chain 101 can maintain stable cutting performance when operating at high speed, improving cutting efficiency and quality.

[0050] Furthermore, it should be noted that the maximum distance between the tips 12 of the left and right sides of the saw teeth 10 after bending is set to approximately 1.8-2 times the thickness of the tooth material. This ensures that the kerf width of the saw chain is precisely controllable during cutting. For example, when the tooth material thickness is 1.1mm, the theoretical kerf width is approximately 1.98-2.2mm. This precise kerf width design not only reduces material waste but also improves cutting efficiency, as a narrower kerf means less material is removed.

[0051] The upper part of the saw tooth 10 is provided with a tooth tip 12 and a limiting tooth 13. The horizontal distance between the tooth tip 12 and the limiting tooth 13 is 1.2-1.8mm, and the height difference between the tooth tip 12 and the limiting tooth 13 is 0.25-0.35mm. The function of the limiting tooth 13 is to limit the cutting depth of the saw tooth 12, preventing the saw tooth 12 from cutting too deeply and increasing the sawing resistance, thereby ensuring the smoothness and efficiency of the sawing process. By precisely controlling the horizontal distance and height difference between the tooth tip 12 and the limiting tooth 13, the best cutting effect can be achieved, and vibration and noise during the sawing process can be reduced.

[0052] By setting the height difference between the tooth tip 12 and the material limiting tooth 13 between 0.25-0.35mm, the saw tooth 12 can cut into the material more smoothly during cutting, while the material limiting tooth 13 can effectively limit the cutting depth and avoid over-cutting.

[0053] By optimizing the dimensional design of the saw teeth 10, including the horizontal distance and height difference between the tooth tips 12 and the limiting teeth 13, as well as the maximum distance after the saw teeth 10 are bent, the single-tooth micro saw chain 101 not only improves cutting accuracy and efficiency, but also reduces sawing resistance and material loss. These technical effects collectively enhance the overall performance of the saw chain, making it an efficient, economical, and durable cutting tool, especially suitable for small lithium-ion electric saws.

[0054] Preferably, the total thickness of the two assembled saw teeth 10 is not greater than the base thickness of the saw teeth 10. The tooth tips 12 of the saw teeth 10 are bent by assembling planar tooth pieces into strips and then bending them. This process simplifies the production process, reduces the use of forming molds, and lowers production costs. By assembling planar tooth pieces into strips first and then bending them, not only is production efficiency improved, but the forming accuracy and consistency of the tooth tips 12 are also ensured.

[0055] In the description of this utility model, it should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Similarly, "first" and "second" are only for ease of understanding and have no other directional meaning, and cannot be considered as limitations on this utility model.

[0056] This invention describes a saw chain assembled from a single component, suitable for use with a lithium-ion electric saw. Specific examples are used to illustrate the principles and implementation methods of this invention. The descriptions of these embodiments are merely for the purpose of aiding understanding of this invention and its core concepts. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. A saw chain assembled from a single component, suitable for use with a lithium-ion electric saw, characterized in that: The saw chain is composed of multiple saw teeth that are continuously hinged together, each saw tooth including a base and a tip; The base includes opposing front and rear planes. The front portion of the front plane is punched and thinned to form a front recessed region. The thickness of the base in the front recessed region is slightly less than half the thickness of the serrations. A chain shaft hole is punched in the front recessed region. The edge of the chain shaft hole is chamfered. The rear portion of the rear side plane is thinned by stamping to form a rear recessed area, and a cylindrical boss is provided at the rear side plane where the rear recessed area is located as a chain shaft. When the first saw tooth is hinged to the second saw tooth, the chain shaft of the first saw tooth is inserted into the chain shaft hole of the second saw tooth and then riveted to make the flange of the boss fill the chamfer of the chain shaft hole to form a hinge. The lower part of the saw teeth between the chain shaft and the chain shaft hole is provided with a concave part, and the saw teeth are assembled to form a complete and continuous saw chain drive tooth structure.

2. The saw chain according to claim 1, characterized in that: The distance between the chain shaft of the saw teeth and the center of the chain shaft hole is set between 4.8mm and 5.5mm, and the base thickness of the saw teeth is set between 0.9mm and 1.5mm.

3. The saw chain according to claim 1, characterized in that: The saw teeth include bent tooth tips, which are formed by bending from the upper end of the base to one side; including tooth tips bent to the left, tooth tips bent to the right, and tooth tips in the middle.

4. The saw chain according to claim 3, characterized in that: Each group of three teeth can be divided into a left-bending tooth tip, a central tooth tip, and a right-bending tooth tip, or each group of three teeth can be divided into a left-bending tooth tip, a right-bending tooth tip, and a central tooth tip; the arrangement order of each group of teeth in a saw chain is selected in one of these ways to maintain consistency.

5. The saw chain according to claim 4, characterized in that: The maximum distance between the tips of the teeth on the left and right sides after the serrations are bent is set to approximately 1.8-2 times the thickness of the tooth material.

6. The saw chain according to claim 1, characterized in that: The upper part of the saw tooth is provided with a tooth tip and a material limiting tooth. The horizontal distance between the tooth tip and the material limiting tooth is 1.2-1.8mm, and the height difference between the tooth tip and the material limiting tooth is 0.25-0.35mm.

7. The saw chain according to claim 1, characterized in that: The total thickness of the two serrations after assembly is no greater than the base thickness of the serrations.

8. The saw chain according to claim 1, characterized in that: The serrations are bent by assembling planar tooth pieces into strips and then bending them into shape.

9. A lithium battery saw, characterized in that: Includes the saw chain and sprocket as described in any one of claims 1-8.

10. A lithium battery saw according to claim 9, characterized in that: The teeth on the sprocket engage with the concave portions of the saw teeth, and as the sprocket rotates, the teeth sequentially embed into the concave portions of the corresponding saw teeth.

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