Environment-friendly light small chain saw based on double-material injection molding process

Abstract

The utility model belongs to the technical field of chain saws, and discloses an environment-friendly light small chain saw based on a double-material injection molding process, which comprises a chain saw body and a protective cover, one end of the protective cover is hinged on a shell in the chain saw body, the protective cover can cover a chain during protection, and when the chain is used, the protective cover can be turned over to one side of the shell so as to cover the chain. According to the chain saw, through the arrangement of the telescopic protective cover, when the chain saw is not used, the protective cover can cover and protect the chain on the chain saw body, the design prevents the chain from being exposed outside, and sharp objects on the surface of the chain are effectively prevented from scratching people in the transportation and storage process; according to the chain saw protective cover, the safety of using and transporting the chain saw is remarkably improved, when the chain needs to be used, the protective cover can be turned to one side of the shell and is retracted and stored, due to the design, when the chain saw is used, the protective cover does not interfere with normal work of the chain, and the operation process is simple, convenient and rapid.

Description

Technical Field

[0001] This utility model relates to the field of chainsaw technology, and in particular to an environmentally friendly and lightweight small chainsaw based on a dual-material injection molding process. Background Technology

[0002] A chainsaw, also known as a chainsaw, is a hand-held saw powered by a gasoline engine. It is mainly used for logging and timber processing. Its working principle is based on the lateral movement of the L-shaped blades on the chainsaw to perform the cutting action.

[0003] Chinese utility model patent with announcement number CN221496432U discloses a portable combination chainsaw. Its background technology states that "Currently, for existing chainsaws, the saw blade is often exposed during transportation. However, there are sharp objects on the surface of the saw blade that can scratch people. At the same time, the lack of protection for the saw blade during transportation will cause wear on the surface of the saw blade, thereby affecting the cutting effect of the saw blade."

[0004] As documented in the aforementioned publicly available literature, existing chainsaws suffer from numerous problems that urgently need to be addressed. Firstly, regarding safety, the exposed saw blade not only easily injures personnel during transportation but also poses a serious threat to the personal safety of operators during daily storage and use. Even slight carelessness can lead to accidents and unnecessary injuries. Secondly, from the perspective of equipment maintenance and performance, the unprotected saw blade is prone to wear during transportation. A worn saw blade significantly reduces its cutting effectiveness, lowering work efficiency, increasing energy consumption, and shortening the blade's lifespan.

[0005] Therefore, an environmentally friendly and lightweight small chainsaw based on a two-material injection molding process is proposed. Utility Model Content

[0006] The purpose of this invention is to provide an environmentally friendly and lightweight small chainsaw based on a two-material injection molding process, thereby solving or at least alleviating one or more of the above-mentioned problems and other problems existing in the prior art.

[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0008] An environmentally friendly and lightweight chainsaw based on a two-material injection molding process includes a chainsaw body and a retractable protective cover. One end of the protective cover is hinged to a shell made of the chainsaw body using a two-material injection molding process. When protecting the chain on the chainsaw body, the protective cover can cover the chain. When using the chain, the protective cover can be flipped to one side of the shell and retracted for storage.

[0009] According to the present invention, an environmentally friendly and lightweight small chainsaw based on a two-material injection molding process is provided, wherein the protective cover includes a first protective shell, a second protective shell and a third protective shell. The first protective shell and the second protective shell are arranged in a U-shape. One end of the second protective shell is slidably inserted into the inner side of one end of the first protective shell, and one end of the third protective shell is slidably inserted into the inner side of one end of the second protective shell.

[0010] According to the present invention, an environmentally friendly and lightweight small chainsaw based on a two-material injection molding process is provided, wherein the inner wall of the first protective shell is provided with a first sliding groove, the inner wall of the second protective shell is provided with a second sliding groove, a first slider is formed on the second protective shell, and a second slider is formed on the third protective shell. The first slider is slidably installed in the first sliding groove, and the second slider is slidably installed in the second sliding groove.

[0011] According to the present invention, an environmentally friendly and lightweight small chainsaw based on a two-material injection molding process is provided, wherein a connecting lug is formed on the shell, and a connecting block is formed at the end of the first protective shell away from the second protective shell, and the connecting block is hinged to the connecting lug.

[0012] In an environmentally friendly and lightweight small chainsaw based on a dual-material injection molding process according to the present invention, a limiting protrusion is formed at the end of the first protective shell away from the second protective shell, and the limiting protrusion is located inside the first groove.

[0013] According to this utility model, an environmentally friendly and lightweight small chainsaw based on a dual-material injection molding process includes a handle bolt. The third protective shell has a through hole at one end away from the second protective shell. The guide plate in the chainsaw body has a first threaded hole, and the outer shell has a second threaded hole. When the protective cover blocks the chain, one end of the handle bolt rotates through the through hole and is threaded into the first threaded hole. When the chain is used, the protective cover flips to one side of the outer shell. After retraction, one end of the handle bolt rotates through the through hole and can be threaded into the second threaded hole.

[0014] This utility model has at least the following beneficial effects:

[0015] This invention features a retractable protective cover that protects the chain when the chainsaw is not in use. This design prevents the chain from being exposed and effectively prevents sharp objects on the chain surface from injuring personnel during transportation and storage, significantly improving safety when using and transporting the chainsaw. When the chain needs to be used, the protective cover can be flipped to one side of the outer shell and retracted for storage. This design ensures that the protective cover will not interfere with the normal operation of the chain when the chainsaw is in use, making the operation simple and quick. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of the environmentally friendly and lightweight small chainsaw based on a dual-material injection molding process of this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the protective cover of this utility model when it is stored.

[0019] Figure 3 for Figure 2 A magnified structural diagram of part A in the diagram;

[0020] Figure 4 This is a cross-sectional structural diagram of the protective cover of this utility model;

[0021] Figure 5 for Figure 4 A magnified structural diagram of part B in the diagram.

[0022] Explanation of icon numbers:

[0023] 1. Chainsaw body; 101. Guide plate; 1001. First threaded hole; 102. Second threaded hole; 103. Connecting lug; 2. Protective cover; 201. First protective shell; 202. Second protective shell; 2021. First slider; 2031. Second slider; 2032. Through hole; 204. First slide groove; 205. Second slide groove; 206. Connecting block; 207. Limiting protrusion; 203. Third protective shell; 3. Handle bolt. Detailed Implementation

[0024] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0025] Please refer to Figures 1 to 5As shown, an embodiment of this utility model provides an environmentally friendly and lightweight small chainsaw based on a two-material injection molding process, including a chainsaw body 1 and a retractable protective cover 2. One end of the protective cover 2 is hinged to the outer shell of the chainsaw body 1, which is made based on a two-material injection molding process. When protecting the chain on the chainsaw body 1, the protective cover 2 can cover the chain. When using the chain, the protective cover 2 can be flipped to one side of the outer shell and retracted for storage.

[0026] The plastic material used in two-material injection molding has good recyclability. After the shell reaches the end of its service life, it can be recycled and reprocessed, reducing environmental pollution and meeting the requirements of sustainable development.

[0027] In this embodiment, the protective cover 2 includes a first protective shell 201, a second protective shell 202, and a third protective shell 203. The first and second protective shells 201 and 202 are arranged in a U-shape. One end of the second protective shell 202 is slidably inserted into the inner side of one end of the first protective shell 201, and one end of the third protective shell 203 is slidably inserted into the inner side of one end of the second protective shell 202. A first sliding groove 204 is formed on the inner wall of the first protective shell 201, and a second sliding groove 205 is formed on the inner wall of the second protective shell 202. A first slider 2021 is formed on the second protective shell 202, and a second slider 2031 is formed on the third protective shell 203. The first slider 2021 is slidably installed in the first sliding groove 204, and the second slider 2031 is slidably installed in the second sliding groove 205. By adopting a multi-shell sliding insertion structure, the protective cover 2 can be flexibly extended and retracted. The cooperation between the sliders and the sliding grooves makes the extension and retraction of the shells of the protective cover 2 smoother and easier to operate.

[0028] In this embodiment, a connecting ear 103 is formed on the shell, and a connecting block 206 is formed at the end of the first protective shell 201 away from the second protective shell 202. The connecting block 206 is hinged to the connecting ear 103. The cooperation between the connecting ear 103 and the connecting block 206 ensures the connection stability between the protective cover 2 and the chainsaw body 1, making it less likely to fall off.

[0029] In this embodiment, a limiting protrusion 207 is formed at the end of the first protective shell 201 away from the second protective shell 202. The limiting protrusion 207 is located inside the first sliding groove 204. The limiting protrusion 207 can effectively prevent the second protective shell 202 from swinging freely from inside the first protective shell 201 after the protective cover 2 retracts.

[0030] In this embodiment, a handle bolt 3 is also included. A through hole 2032 is provided at the end of the third protective housing 203 away from the second protective housing 202. A first threaded hole 1001 is provided on the guide plate 101 in the chainsaw body 1, and a second threaded hole 102 is provided on the outer shell. When the protective cover 2 covers the chain, one end of the handle bolt 3 rotates through the through hole 2032 and is threaded into the first threaded hole 1001. When the chain is used, the protective cover 2 flips to one side of the outer shell. After retraction, one end of the handle bolt 3 rotates through the through hole 2032 and can be threaded into the second threaded hole 102. The cooperation between the handle bolt 3 and the threaded hole can firmly fix the chain when the protective cover 2 is protecting it and when it is stored, preventing the protective cover 2 from shaking or shifting.

[0031] Working principle: When the chainsaw is not in use, unfold the protective cover 2 from the stored state. Utilize the cooperation of the slider and groove between the protective housings to stretch the protective cover 2 to a length suitable for covering the chain on the chainsaw body 1. Then, rotate the protective cover 2 around the hinge point of the connecting block 206 and the connecting ear 103 to the side of the chain. Use the handle bolt 3 to pass through the through hole 2032 on the third protective housing 203 and thread it into the first threaded hole 1001 to fix the protective cover 2, thereby protecting the chain.

[0032] When the chainsaw is needed, first unscrew the handle bolt 3, then flip the protective cover 2 around the hinge point to one side of the chainsaw body 1. Next, by sliding the slider in the groove, retract each protective shell of the protective cover 2 to shorten its length for easy storage. Finally, pass the handle bolt 3 through the through hole 2032 and thread it into the second threaded hole 102 to fix the retracted protective cover 2 to one side of the outer shell. At this point, the chainsaw chain can work normally for cutting operations.

[0033] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. An environmentally friendly and lightweight mini chainsaw based on a two-material injection molding process, characterized in that, The device includes a chainsaw body (1) and a retractable protective cover (2). One end of the protective cover (2) is hinged to the outer shell of the chainsaw body (1) made using a two-material injection molding process. When protecting the chain on the chainsaw body (1), the protective cover (2) can cover the chain. When using the chain, the protective cover (2) can be flipped to one side of the outer shell and retracted for storage.

2. The environmentally friendly and lightweight mini chainsaw based on a two-material injection molding process according to claim 1, characterized in that: The protective cover (2) includes a first protective shell (201), a second protective shell (202) and a third protective shell (203). The first protective shell (201) and the second protective shell (202) are arranged in a U-shape. One end of the second protective shell (202) is slidably inserted into the inner side of one end of the first protective shell (201), and one end of the third protective shell (203) is slidably inserted into the inner side of one end of the second protective shell (202).

3. The environmentally friendly and lightweight mini chainsaw based on a two-material injection molding process according to claim 2, characterized in that: The inner wall of the first protective housing (201) is provided with a first sliding groove (204), the inner wall of the second protective housing (202) is provided with a second sliding groove (205), a first slider (2021) is formed on the second protective housing (202), and a second slider (2031) is formed on the third protective housing (203). The first slider (2021) is slidably installed in the first sliding groove (204), and the second slider (2031) is slidably installed in the second sliding groove (205).

4. The environmentally friendly and lightweight mini chainsaw based on a two-material injection molding process according to claim 3, characterized in that: A connecting lug (103) is formed on the shell, and a connecting block (206) is formed at the end of the first protective shell (201) away from the second protective shell (202), and the connecting block (206) is hinged to the connecting lug (103).

5. The environmentally friendly and lightweight mini chainsaw based on a two-material injection molding process according to claim 4, characterized in that: The first protective housing (201) has a limiting protrusion (207) formed at one end away from the second protective housing (202), and the limiting protrusion (207) is located inside the first groove (204).

6. The environmentally friendly and lightweight mini chainsaw based on a two-material injection molding process according to claim 5, characterized in that: It also includes a handle bolt (3). The third protective housing (203) has a through hole (2032) at one end away from the second protective housing (202). The guide plate (101) in the chainsaw body (1) has a first threaded hole (1001), and the outer shell has a second threaded hole (102). When the protective cover (2) covers the chain, one end of the handle bolt (3) rotates through the through hole (2032) and is threaded into the first threaded hole (1001). When the chain is used, the protective cover (2) flips to one side of the outer shell. After retraction, one end of the handle bolt (3) rotates through the through hole (2032) and can be threaded into the second threaded hole (102).

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