Chain saw

Abstract

The utility model relates to the field of garden equipment, and particularly discloses a chain saw which comprises a shell, a motor arranged in the shell and a chain arranged at one end of the shell, cutting power is provided for the chain by the motor, a heat dissipation window is formed in the shell, a filter plate is arranged at the heat dissipation window, a cover plate is arranged on one side of the filter plate and detachably installed at the heat dissipation window, and the cover plate is provided with a water inlet and a water outlet. The cover plate is provided with an air hole and an elastic buckle, and the inner wall of the heat dissipation window is provided with a clamping groove. The filter plate is arranged at the heat dissipation window, so that effective heat dissipation of components such as the motor and the circuit board can be guaranteed, impurities such as dust and chippings can be prevented from entering the shell, equipment performance reduction or faults caused by dust accumulation are avoided, and the service life is prolonged; the cover plate adopts a detachable design, and quick mounting and dismounting are realized through matching of the elastic buckles and the clamping grooves, so that a user can easily dismount the cover plate to clean the filter plate or the heat dissipation window, the maintenance convenience is improved, and the downtime is shortened.

Description

Technical Field

[0001] This application relates to the field of garden equipment, and in particular to a chainsaw. Background Technology

[0002] Chainsaws, as a common power cutting tool, are widely used in wood processing, garden pruning, building demolition, and other fields. Traditional chainsaws typically consist of a housing, motor, chain, and power system. The motor generates a lot of heat during operation, and if heat dissipation is poor, it can easily lead to overheating of the equipment, affecting performance or even damaging internal components.

[0003] Existing chainsaws typically rely on ventilation windows on the casing for natural ventilation. However, in outdoor or dusty environments, dust, debris, and other impurities can easily enter the casing through these windows, accumulating on critical components such as the motor and circuit boards. This not only affects heat dissipation efficiency but can also lead to equipment malfunctions or shorten its lifespan. While some designs attempt to add filters to the ventilation windows, existing filters often suffer from inconvenience in disassembly and maintenance. Especially in battery-powered electric chainsaws, an improper layout of the battery pack and ventilation windows can further impact heat dissipation and space utilization. Utility Model Content

[0004] The purpose of at least one specific embodiment of this utility model is to overcome the defects of the existing technology and provide a chainsaw.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A chainsaw, comprising:

[0007] case;

[0008] The motor is housed within the casing;

[0009] The chain, which is located at one end of the housing, is powered by a motor for cutting.

[0010] The housing has a heat dissipation window, a filter plate is installed at the heat dissipation window, and a cover plate is installed on one side of the filter plate;

[0011] The cover is detachably installed at the heat dissipation window and has ventilation holes.

[0012] Furthermore, the cover plate is equipped with elastic buckles, and the inner wall of the heat dissipation window is equipped with a slot. When the cover plate is installed at the heat dissipation window, the elastic buckles are fastened in the slots.

[0013] Furthermore, the casing has a battery pack mounting section, where a battery pack is installed;

[0014] A circuit board is installed inside the housing, with at least a portion of the circuit board located in the projection area of ​​the battery pack facing the housing, and the discharge terminal group of the battery pack facing the power receiving terminal of the chainsaw.

[0015] Furthermore, a heat sink is installed on one side of the circuit board, and the heat sink is located on one side of the heat dissipation window.

[0016] Furthermore, the battery pack includes a battery pack body and a battery pack connector, with the discharge terminal group located at the battery pack connector.

[0017] The battery pack is connected to the battery pack mounting part on the casing via the battery pack connector, and the connected battery pack connector tends to be close to the circuit board.

[0018] Furthermore, the housing is assembled from a first housing unit and a second housing unit, and the splicing position of the first housing unit and the second housing unit forms a splicing seam. The battery pack body is located on one side of the splicing seam, and the battery pack connector and circuit board are located on the other side of the splicing seam.

[0019] Furthermore, the battery pack mounting section is located on the first housing, and the heat dissipation window is located on the second housing.

[0020] Furthermore, in the direction facing the heat dissipation window, the projection of the battery pack body and / or circuit board at least partially overlaps with the heat dissipation window.

[0021] Furthermore, the inner side of the first housing unit and / or the second housing unit is equipped with a partition plate. After the first housing unit and the second housing unit are spliced ​​together, the partition plate divides the inner cavity of the housing into a first mounting cavity and a second mounting cavity. The circuit board is located in the first mounting cavity, and the motor is located in the second mounting cavity.

[0022] Furthermore, a positioning port is provided on one side of the heat dissipation window, and a positioning protrusion corresponding to the positioning port is provided on one side of the cover plate. When the cover plate is installed at the heat dissipation window, the positioning protrusion extends into the positioning port to pre-position the cover plate.

[0023] Furthermore, the cover plate and filter plate adopt a separate or integrated structure.

[0024] The beneficial technical effects of the chainsaw provided in this application compared with the prior art are as follows: 1. By setting a filter plate at the heat dissipation window, this application can not only ensure the effective heat dissipation of components such as motors and electronic components, but also prevent dust, debris and other impurities from entering the housing, avoid equipment performance degradation or failure due to dust accumulation, and extend service life.

[0025] 2. The cover plate adopts a detachable design and can be quickly installed and removed through the cooperation of elastic buckles and slots, allowing users to easily remove the cover plate to clean the filter plate or heat dissipation window, improving maintenance convenience and reducing downtime;

[0026] 3. The arrangement of the battery pack and circuit board on the casing overlaps or is adjacent to the heat dissipation window, which saves internal space and ensures that the heat dissipation airflow can effectively flow through key heat-generating components such as circuit boards and heat sinks, thereby improving the overall heat dissipation efficiency and avoiding local overheating. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the chainsaw structure in one embodiment of this application.

[0029] Figure 2 This is an exploded view of a chainsaw in one embodiment of this application.

[0030] Figure 3 This is a schematic diagram of the cover plate in one embodiment of this application.

[0031] Figure 4 This is a partial structural diagram of a chainsaw in one embodiment of this application.

[0032] Figure 5 This is a front view of a chainsaw in one embodiment of this application.

[0033] Figure 6 for Figure 5 A schematic diagram of the cross section along line AA.

[0034] Figure 7 for Figure 6 Enlarged view of area B in the image. Detailed Implementation

[0035] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0036] Reference Figure 1 , Figure 2 , Figure 6 A chainsaw 100 includes a housing 10, a motor 20 disposed within the housing 10, and a chain 30 disposed at one end of the housing 10, the chain 30 being powered by the motor 20 for cutting.

[0037] The housing 10 is made of high-strength engineering plastic or die-cast aluminum alloy. The motor 20 can be connected to the chain 30 through a gearbox, driving the chain 30 to rotate, thereby achieving wood cutting. The chain 30 consists of multiple cutting teeth, drive links, and connecting plates. Its type can be a full-tooth chain, a half-tooth chain, or a safety chain. Each cutting tooth contains a blade (for cutting wood). The specific structure of the chain 30 is not described in detail in this embodiment.

[0038] In this embodiment, the housing 10 has a heat dissipation window 40, a filter plate 50 is provided at the heat dissipation window 40, and a cover plate 60 is provided on one side of the filter plate 50.

[0039] In this embodiment, the material of the filter plate 50 is preferably sponge. Preferably, the filter plate 50 can be designed as a multi-layer composite structure (outer nylon mesh + middle sponge + inner metal filter), with a thickness of about 8mm, which can intercept particles ≥0.1mm.

[0040] Reference Figure 3 The cover plate 60 is detachably installed at the heat dissipation window 40, and the cover plate 60 has a vent hole 60a and an elastic buckle 60b. The inner wall of the heat dissipation window 40 has a slot 40a. When the cover plate 60 is installed at the heat dissipation window 40, the elastic buckle 60b is fastened in the slot 40a, making installation and removal convenient.

[0041] In addition, to improve the stability of the cover plate 60 at the heat dissipation window 40, a positioning port 40b is provided on one side of the heat dissipation window 40, and a positioning protrusion 60c corresponding to the positioning port 40b is provided on one side of the cover plate 60. When the cover plate 60 is installed at the heat dissipation window 40, the positioning protrusion 60c extends into the positioning port 40b to pre-position the cover plate 60. After pre-positioning, the cover plate 60 can be engaged with the slot 40a on the heat dissipation window 40 by the elastic buckle 60b. When disassembling, the cover plate 60 can be removed by pressing the release button of the elastic buckle 60b with the thumb.

[0042] It should be noted that the above describes the detachable design of the filter plate 50 and the cover plate 60. In some embodiments, for ease of disassembly and assembly, the filter plate 50 and the cover plate 60 are designed as a single piece and are manufactured by injection molding. In this way, when the cover plate 60 is disassembled, the filter plate 50 can be disassembled along with it, and the filter plate 50 is not easily lost.

[0043] Furthermore, refer to Figures 4 to 7 The housing 10 has a battery pack mounting part 103, a battery pack 200 is mounted at the battery pack mounting part 103, a circuit board 70 is mounted inside the housing, and the discharge terminal group of the battery pack faces the power receiving terminal 10a of the chainsaw.

[0044] Furthermore, a heat sink 80 is mounted on one side of the circuit board 70, and the heat sink 80 is located on one side of the heat dissipation window 40. The battery pack 200 includes a battery pack body 201 and a battery pack connector 202, and a discharge terminal group is located at the battery pack connector 202. The battery pack 200 is connected to the battery pack mounting part 103 on the housing 10 through the battery pack connector 202. After connection, the battery pack connector 202 tends to be close to the circuit board 70. In the direction facing the heat dissipation window 40, the projection of the battery pack 200 and / or the circuit board 70 at least partially overlaps with the heat dissipation window 40. The circuit board 70 is located in the area between the battery pack 200 and the heat dissipation window 40.

[0045] The purpose of the design that at least partially overlaps the battery pack 200 with the heat dissipation window 40 and the circuit board 70 with the heat dissipation window 40 is to optimize the spatial layout and airflow path in order to achieve efficient heat dissipation, structural compactness and improved equipment reliability.

[0046] The battery pack 200 generates heat during charging and discharging (especially in high-power chainsaws). The overlapping area ensures that the airflow of the heat dissipation window 40 can flow directly across the surface of the battery pack 200 and the circuit board 70, and the heat is carried away by forced convection, thus avoiding performance degradation or safety risks to the battery pack 200 and the circuit board 70 due to high temperature.

[0047] When the chainsaw is cutting at an angle or vertical, the overlapping design ensures that the cooling airflow always covers a portion of the battery pack 200 and circuit board 70, regardless of how the equipment is tilted, thus avoiding localized overheating.

[0048] If the circuit board 70 is completely offset from the heat dissipation window, hot air may circulate and accumulate within the housing 10. The overlapping design ensures that hot air is exhausted along the window 40, forming a one-way heat dissipation path (cold air in → hot air out).

[0049] During operation, the heat generated by the battery pack 200 and circuit board 70 can be dissipated to the outside of the housing 10 through the heat dissipation window 40. The filter plate 50 and the vent 60a can ensure that the heat inside the housing 10 can be dissipated smoothly.

[0050] In some embodiments, the area of ​​the heat dissipation window 40 is larger than the area of ​​the circuit board 70, which can improve the overall heat dissipation efficiency and facilitate the timely dissipation of heat generated by the circuit board 70.

[0051] This application provides a filter plate 50 at the heat dissipation window 40, which can not only ensure effective heat dissipation of components such as motor 20 and circuit board 70, but also prevent dust, debris and other impurities from entering the housing 10, thereby avoiding equipment performance degradation or failure due to dust accumulation and extending service life.

[0052] The cover plate 60 adopts a detachable design and can be quickly installed and removed through the cooperation of the elastic buckle 60b and the slot 40a. This allows users to easily remove the cover plate to clean the filter plate or heat dissipation window, improve maintenance convenience, and reduce downtime.

[0053] The arrangement of the battery pack 200 and circuit board 70 on the housing 10 partially overlaps with or is adjacent to the heat dissipation window 40, which saves internal space and ensures that the heat dissipation airflow can effectively flow through key heat-generating components (such as circuit boards), improves the overall heat dissipation efficiency, and avoids local overheating.

[0054] In addition, the housing is spliced ​​together by the first housing unit 101 and the second housing unit 102. In order to ensure the balance of the entire chainsaw equipment, the splicing position of the first housing unit 101 and the second housing unit 102 forms a splicing seam P. The splicing seam P is located on the central axis of the housing 10. The battery pack body 201 is located on one side of the splicing seam P, and the battery pack plug part 202 and the circuit board 70 are located on the other side of the splicing seam P.

[0055] This application arranges the battery pack body 201 and the battery pack connector 202 on both sides of the splice seam P, making the weight distribution more balanced and preventing the center of gravity of the equipment from shifting due to the battery pack 200 being concentrated on one side. This improves the stability of the chainsaw grip and operation, and reduces user fatigue. The splice seam P serves as a boundary, separating the heavy part of the battery pack body 201 from the battery pack connector 202 and the electronic control part of the circuit board 70, making the internal component layout clearer, reducing space waste, and facilitating heat dissipation and maintenance. The circuit board 70 and the battery pack connector 202 are located on the same side, shortening the electrical connection distance, reducing line interference, and ensuring efficient and stable power transmission.

[0056] Furthermore, the inner side of the first housing unit 101 and / or the second housing unit 102 is provided with a partition plate 104. After the first housing unit 101 and the second housing unit 102 are spliced ​​together, the partition plate 104 divides the inner cavity of the housing 10 into a first mounting cavity 105 and a second mounting cavity 106. The circuit board 70 and the heat sink 80 are located in the first mounting cavity 105, and the motor 20 and other gear transmission components connected to the chain 30 are located in the second mounting cavity 106. The first mounting cavity 105 is connected to the heat dissipation window 40. The advantage of using the partition plate 104 to divide the inner cavity of the housing 10 into the first mounting cavity 105 and the second mounting cavity 106 is that the heat-generating components such as the circuit board 70 installed in the first mounting cavity 105 can dissipate heat through the heat dissipation window 40. If some debris enters the first mounting cavity 105 through the heat dissipation window 40, it will not directly enter the second mounting cavity 106, thus avoiding contact between the debris and the gear transmission components in the second mounting cavity 106.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A chainsaw, comprising: case; The motor is housed within the housing; A chain, which is disposed at one end of the housing, and is powered by the motor for cutting; The feature is that the housing has a heat dissipation window, a filter plate is provided at the heat dissipation window, and a cover plate is provided on one side of the filter plate; The cover plate is detachably installed at the heat dissipation window, and the cover plate has ventilation holes.

2. The chainsaw according to claim 1, characterized in that, The cover plate is provided with an elastic buckle, and the inner wall of the heat dissipation window is provided with a slot. When the cover plate is installed at the heat dissipation window, the elastic buckle is fastened in the slot.

3. The chainsaw according to claim 1, characterized in that, The housing has a battery pack mounting section, and a battery pack is installed at the battery pack mounting section; A circuit board is installed inside the housing, and the circuit board is at least partially located in the projection area of ​​the battery pack facing the housing, with the discharge terminal group of the battery pack facing the power receiving terminal of the chainsaw.

4. The chainsaw according to claim 3, characterized in that, A heat sink is mounted on one side of the circuit board, and the heat sink is located on one side of the heat dissipation window.

5. The chainsaw according to claim 3, characterized in that, The battery pack includes a battery pack body and a battery pack connector, and the discharge terminal group is located at the battery pack connector. The battery pack is connected to the battery pack mounting part on the housing via the battery pack connector, and the connected battery pack connector tends to be close to the circuit board.

6. The chainsaw according to claim 5, characterized in that, The housing is assembled from a first housing unit and a second housing unit, with the joint between the first housing unit and the second housing unit forming a seam. The battery pack body is located on one side of the seam, and the battery pack connector and the circuit board are located on the other side of the seam.

7. The chainsaw according to claim 6, characterized in that, The battery pack mounting portion is located on the first housing, and the heat dissipation window is located on the second housing.

8. The chainsaw according to claim 5, characterized in that, In the direction facing the heat dissipation window, the projection of the battery pack body and / or the circuit board at least partially overlaps with the heat dissipation window.

9. The chainsaw according to claim 6, characterized in that, The first housing unit and / or the second housing unit have a partition plate on their inner side. After the first housing unit and the second housing unit are spliced ​​together, the partition plate divides the inner cavity of the housing into a first mounting cavity and a second mounting cavity. The circuit board is located in the first mounting cavity and the motor is located in the second mounting cavity.

10. The chainsaw according to claim 2, characterized in that, A positioning port is provided on one side of the heat dissipation window, and a positioning protrusion corresponding to the positioning port is provided on one side of the cover plate. When the cover plate is installed at the heat dissipation window, the positioning protrusion extends into the positioning port to pre-position the cover plate.

11. The chainsaw according to claim 1, characterized in that, The cover plate and the filter plate are either separate or integrated.

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