Long rod type electric power tool

Abstract

The application provides a long rod type electric tool, which comprises a control assembly, a working assembly, a connecting rod assembly, a fan shell and a cooling fan. The control assembly comprises a casing and a controller, the casing is provided with a first air duct opening, the first air duct opening is communicated with an external environment, the connecting rod assembly comprises a first connecting pipe connected with the casing, the first connecting pipe is provided with a ventilation opening, the fan shell is connected with at least one of the first connecting pipe and the casing, the inner cavity of the fan shell is in fluid communication with the ventilation opening and the first air duct opening, the fan shell is located in the fan shell, and the cooling air duct is located between the first air duct opening and the ventilation opening and is in fluid communication with the first air duct opening and the ventilation opening. The controller is arranged in the cooling air duct. When the gas in the external environment flows through the first air duct opening, the cooling air duct and the ventilation opening, the controller can be cooled, and the use safety and experience of the long rod type electric tool are improved.

Description

Technical Field

[0001] This application relates to the field of power tool technology, specifically to a long-handled power tool with good heat dissipation. Background Technology

[0002] When using long-handled power tools, the internal controller generates heat due to high load operation. Excessive heat can cause the tool to become too hot to handle and may also lead to controller failure, affecting normal use. Therefore, it is necessary to design a power tool with good heat dissipation. Utility Model Content

[0003] Therefore, this application provides a long-handled power tool with good heat dissipation, excellent safety, and a superior user experience.

[0004] The first aspect of this application provides a long-handled power tool, comprising: a working component; a control component including a housing and a controller, the housing having a first air duct opening communicating with the external environment; a linkage assembly connecting the control component and the working component, the linkage assembly including a first connecting pipe connected to the housing, the first connecting pipe having a vent; a fan housing connected to at least one of the first connecting pipe and the housing, the inner cavity of the fan housing being in fluid communication with the vent and the first air duct opening; a cooling fan located within the fan housing; a cooling duct located between the first air duct opening and the vent and in fluid communication with the first air duct opening and the vent, the controller being located within the cooling duct.

[0005] In one embodiment, the fan housing is connected to the first connecting pipe, and the fan housing is provided with a second air duct opening that is in fluid communication with the external environment. The fan housing is arranged to at least partially surround the air duct opening, and the cooling fan is located between the second air duct opening and the air duct opening.

[0006] In one embodiment, the housing includes a main housing and a handle housing. The main housing is provided with a first air duct and a heat dissipation duct. The handle housing extends from the main housing toward the first connecting pipe and is disposed around the first connecting pipe. The handle housing is located between the main housing and the fan housing.

[0007] In one embodiment, the linkage assembly includes a windbreak located inside a first connecting tube and blocking one end of the first connecting tube facing the working assembly.

[0008] In one embodiment, the windbreak is integrally formed with the first connecting pipe, the cable between the controller and the working component is housed in the first connecting pipe, and the windbreak is provided with a wire hole for the cable to pass through.

[0009] In one embodiment, the linkage assembly further includes a plate housed within a first connecting tube, which divides the interior of the first connecting tube into a first chamber and a second chamber. The plate extends into the first chamber with a windbreak portion to block one end of the first chamber facing the working component. The plate is provided with a clearance portion to avoid the vent, and the first chamber is in fluid communication with the vent. The cable between the controller and the working component is housed in the second chamber.

[0010] In one embodiment, the housing is provided with an air duct wall, which is located between the first air duct opening and the first connecting pipe and forms a heat dissipation air duct. The controller is placed in the heat dissipation air duct along a first direction, which is the length direction of the first connecting pipe or a direction parallel to the length direction of the first connecting pipe.

[0011] In one embodiment, the air duct wall has a notch, and the controller covers the notch to isolate the heat dissipation air duct from the internal space of the housing.

[0012] In one embodiment, the controller is embedded in a notch, and the controller's heat sink is exposed within the heat dissipation duct.

[0013] In one embodiment, when viewed along the extension direction of the first connecting pipe, the heat sink at least partially overlaps with the first connecting pipe.

[0014] Compared with the prior art, this application has at least the following advantages:

[0015] This application relates to long-handled power tools. By providing a first air duct opening in the housing, a heat dissipation air duct inside the housing, a vent on the first connecting pipe of the connecting rod assembly, and placing the controller within the heat dissipation air duct, external ambient air can flow through the first air duct opening, the heat dissipation air duct, and the vent, thereby achieving heat dissipation and cooling of the controller within the heat dissipation air duct. Furthermore, by placing a cooling fan within a fan housing that is fluidly connected to the vent and the first air duct opening, the cooling fan accelerates the airflow speed within the heat dissipation air duct and the first connecting pipe, improving heat dissipation and cooling efficiency. This avoids the problems of the long-handled power tool becoming too hot to handle and the controller failing due to high temperature, thus improving the safety and user experience of using long-handled power tools. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a long-handled power tool provided in an embodiment of this application.

[0017] Figure 2 This is a schematic diagram of a long-handled power tool provided in one embodiment of this application from another perspective.

[0018] Figure 3 This is a cross-sectional view of a long-handled power tool provided in an embodiment of this application.

[0019] Figure 4This is an exploded schematic diagram of a linkage assembly provided in an embodiment of this application.

[0020] Figure 5 This is an exploded view of a fan housing provided in one embodiment of this application.

[0021] Figure 6 yes Figure 3 The diagram shows an airflow path for a long-handled power tool.

[0022] Figure 7 yes Figure 3 This diagram illustrates another airflow path for long-handled power tools.

[0023] Explanation of main component symbols

[0024] 100 - Long-handle power tools; 10 - Working components; 20 - Control components; 21 - Housing; 211 - Main housing.

[0025] 212-Handle housing, 213-First air duct opening, 214-Air duct wall, 215-Heat dissipation air duct, 216-Notch, 22-Controller,

[0026] 23-Battery connector, 30-Linkage assembly, 31-First connecting tube, 311-Ventilation port, 312-Wind deflector

[0027] 313 - Wiring hole, 314 - First chamber, 32 - Second connecting pipe, 33 - Plate, 331 - Clearance section, 40 - Fan housing

[0028] 41-Half-shell, 42-Second air duct opening, 50-Cooling fan, 60-Manual switch. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application. Unless otherwise specified, the different embodiments and features described below can be combined with each other.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] It should be understood that the terms "first," "second," etc., are used to distinguish different objects, not to describe a specific order. Terms indicating orientation or positional relationship, such as "upper," "lower," "front," "rear," "inner," and "outer," are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0032] Please see Figure 1 This is a schematic diagram of a long-handled power tool 100 provided in an embodiment of this application. It should be understood that the long-handled power tool 100 includes, but is not limited to, lawnmowers, weed trimmers, brush cutters, high-pole saws, and high-pole shears, etc., for illustrative purposes only. Figure 1 The example shown is a long-handled power tool, specifically a peg saw.

[0033] like Figure 1 As shown, the long-handled power tool 100 includes a working component 10, a control component 20, and a linkage assembly 30 connecting the control component 20 and the working component 10. The linkage assembly 30 has a certain length, with the length direction of the linkage assembly 30 as the front-rear direction. The control component 20 is located at the rear end of the linkage assembly 30, and the working component 10 is located at the front end of the linkage assembly 30, thus facilitating the user to send the working component 10 to distant or high positions such as tree branches to perform work.

[0034] The working component 10 includes a working head (not labeled in the figure) and a motor (not labeled in the figure), and the control component 20 includes a housing 21 and a controller 22 housed in the housing 21. The controller 22 is, for example, a microcontroller (MCU) or other general-purpose controller. The controller 22 is used to control the motor to drive the working head to perform shearing, cutting, sawing and other operations.

[0035] For more details, please refer to the following: Figure 2 and Figure 3The housing 21 includes a main housing 211 and a handle housing 212. The main housing 211 and the handle housing 212 can be integrally formed or separate. The main housing 211 and the handle housing 212 are, for example, made of plastic. The main housing 211 can be used to house the controller 22. For illustrative purposes, please refer to [link to relevant documentation]. Figure 2 A battery connector 23 is mounted on the main housing 211. A movable battery is detachably electrically connected to the battery connector 23 and supplies power to the controller 22 and the motor through the battery connector 23. A handle housing 212 extends from the main housing 211 toward the first connecting tube 31 and surrounds the first connecting tube 31 to cover at least a portion of it. The handle housing 212 serves as a grip for the user. In one embodiment, the handle housing 212 may also be recessed for easier gripping.

[0036] In this embodiment, the front end of the main housing 211 is open, and the rear end of the main housing 211 has a first air duct opening 213 that communicates with the external environment. It is understood that the first air duct opening 213 can also be opened at other locations on the main housing 211, and one or more first air duct openings 213 can be set according to actual needs, without specific limitations here.

[0037] like Figure 3 As shown, the main housing 211 has an internal air duct wall 214, which is located between the first air duct opening 213 and the connecting rod assembly 30 and forms a heat dissipation air duct 215. Further example, in this embodiment, the main housing 211 has two internal air duct walls 214, as shown in the figure. Figure 3 In a defined vertical direction (e.g., the height of the connecting rod assembly 30 or the main housing 21), two air duct walls 214 are spaced vertically to form a heat dissipation air duct 215. The opening at the front end of the main housing 211 and the first air duct opening 213 at the rear end of the main housing 211 correspond to the interval between the two air duct walls 214, so that the heat dissipation air duct 215 is in fluid communication with the opening at the front end of the main housing 211 and the first air duct opening 213 at the rear end of the main housing 211.

[0038] The controller 22 is disposed within the heat dissipation duct 215. In some embodiments, the controller 22 is placed within the heat dissipation duct 215 along a first direction, which is the length direction of the first connecting pipe 31 or a direction parallel to the length direction of the first connecting pipe 31, such that the controller 22 is at least partially aligned with the first connecting pipe 31 along the length direction of the first connecting pipe 31.

[0039] In some embodiments, such as Figure 3As shown, the air duct wall 214 has a notch 216, and the controller 22 is embedded in the notch 216. This design serves two purposes: firstly, it covers the notch 216, isolating the heat dissipation air duct 215 from the internal space of the main housing 211. This ensures that gas can only flow along the guide of the air duct wall 214 through the heat dissipation air duct 215, preventing leakage into other internal spaces of the main housing 211 besides the heat dissipation air duct 215. Secondly, it allows the controller 22 to be made thinner and lighter on the air duct wall 214, preventing the controller 22 from protruding excessively and occupying too much space in the heat dissipation air duct 215, thus affecting the airflow within the heat dissipation air duct 215.

[0040] In this embodiment, as Figure 2 and Figure 3 As shown, the linkage assembly 30 includes a first connecting pipe 31 and a second connecting pipe 32. The rear end of the first connecting pipe 31 is connected to the front end of the main housing 211 and corresponds to the air duct wall 214. The front end of the first connecting pipe 31 is connected to the working component 10 through the second connecting pipe 32. The first connecting pipe 31 can be a single hollow pipe section or composed of multiple pipe sections connected sequentially. The second connecting pipe 32 can be a telescopic hollow pipe section, allowing the user to adjust the length of the linkage assembly 30 according to actual needs. The first connecting pipe 31 and the second connecting pipe 32 are, for example, made of aluminum, stainless steel, or other materials with high strength and hardness.

[0041] It is understood that, in order to make the best use of the internal space of the linkage assembly 30 and to make the long-handled power tool 100 more aesthetically pleasing, the cable between the controller 22 and the working component 10 can be run through the first connecting pipe 31 and the second connecting pipe 32. Optionally, in some other embodiments, the second connecting pipe 32 can be omitted, that is, the front end of the first connecting pipe 31 is directly connected to the working component 10, and the cable between the controller 22 and the working component 10 is run through the first connecting pipe 31.

[0042] The first connecting pipe 31 has a vent 311. One or more vents 311 can be provided according to actual conditions, and no specific limitation is made here. The vent 311 is used to communicate with the external environment. Since the rear end of the first connecting pipe 31 is connected to the front end of the main housing 211, the vent 311 is also in fluid communication with the opening at the front end of the main housing 211, the heat dissipation duct 215, and the first air duct opening 213.

[0043] Therefore, when gas from the external environment flows into the first air duct 213, the gas flows through the heat dissipation air duct 215 and then into the internal space of the first connecting pipe 31, and then flows out from the vent 311 of the first connecting pipe 31 to the external environment.

[0044] Alternatively, when gas from the external environment flows into the vent 311 of the first connecting pipe 31, the gas flows through the internal space of the first connecting pipe 31 and then into the heat dissipation duct 215, and then flows out from the first duct opening 213 into the external environment.

[0045] As the gas flows through the heat dissipation duct 215, it can carry away the heat generated by the controller 22, thereby achieving heat dissipation for the controller 22.

[0046] It is understandable that, since the vent 311 is located on the first connecting pipe 31 and the vent 311 is close to the controller 22, the gas flow path (which can be simply referred to as the airflow path) formed by the long-handled power tool 100 is relatively short, which facilitates the exchange of airflow between the heat dissipation duct 215 and the external environment and is conducive to achieving higher heat dissipation efficiency.

[0047] In some embodiments, a heat sink (not shown in the figure) is also installed on the controller 22. The heat sink of the controller 22 can be exposed within the heat dissipation duct 215 to increase the heat dissipation area of ​​the controller 22 and further improve the heat dissipation efficiency of the controller 22. Specifically, when viewed along the extension direction of the first connecting pipe 31, the heat sink and the first connecting pipe 31 at least partially overlap, so that the gas can pass directly through the heat sink before entering the first connecting pipe 31, avoiding gas bends that cause losses (that is, avoiding gas obstruction that causes diversion, resulting in a reduction in the airflow to the heat sink), thereby improving the heat dissipation effect of the controller 22.

[0048] In addition, when the main housing 211 and the handle housing 212 are integrated, since there is no assembly gap between the main housing 211 and the handle housing 212, the problem of gas leakage from the assembly gap can be avoided, which helps the heat dissipation effect.

[0049] In this embodiment, to prevent gas in the first connecting pipe 31 from flowing to the second connecting pipe 32 and thus reducing the heat dissipation effect, such as Figure 3 As shown, the connecting rod assembly 30 also includes a wind deflector 312. The wind deflector 312 is located inside the first connecting pipe 31 and blocks the end of the first connecting pipe 31 facing the working assembly 10, ensuring that gas flowing into the first connecting pipe 31 from the vent 311 can only flow towards the heat dissipation duct 215, or vice versa. Simultaneously, the wind deflector 312 can also prevent gas from the second connecting pipe 32 from entering the first connecting pipe 31, avoiding airflow turbulence within the first connecting pipe 31 and the heat dissipation duct 215 caused by gas from the second connecting pipe 32, thus preventing any impact on heat dissipation.

[0050] In one embodiment, such as Figure 3As shown, the windbreak 312 is integrally formed with the first connecting pipe 31. The windbreak 312 is, for example, a rib or stiffener structure inside the first connecting pipe 31. The internal space of the first connecting pipe 31 provides both air circulation and cable routing. The windbreak 312 has a cable through hole 313, the diameter of which is adapted to the size of the cable between the controller 22 and the working component 10. The cable through hole 313 allows the cable to pass through, facilitating cable routing between the controller 22 and the working component 10.

[0051] In another embodiment, such as Figure 3 and Figure 4 As shown, the windbreak part 312 and the first connecting pipe 31 are separately arranged. Specifically, in addition to the first connecting pipe 31 and the second connecting pipe 32, the connecting rod assembly 30 also includes a plate 33. The plate 33 is housed inside the first connecting pipe 31 and can be fixed to the inner wall of the first connecting pipe 31 by means of interference connection, snap-fit ​​connection, etc. The plate 33 divides the internal space of the first connecting pipe 31 into two chambers. For easy distinction, the two chambers are referred to as the first chamber 314 and the second chamber. Figure 3 Only the first chamber 314 is shown. A baffle 312 extends from the front end of the plate 33 into the first chamber 314 to block its front end. A clearance portion 331 is hollowed out on the side of the plate 33 facing the vent 311, located behind the baffle 312 to avoid the vent 311. This design allows the first chamber 314 to be in fluid communication with the vent 311 and the heat dissipation duct 215, enabling gas flow. The second chamber is connected to the second connecting pipe 32 and the opening at the front end of the main housing 211. The second chamber can accommodate the cable between the controller 22 and the working component 10, providing cable routing.

[0052] In this embodiment, as Figure 3 and Figure 5 As shown, the long-handled power tool 100 also includes a fan housing 40 and a cooling fan 50.

[0053] Specifically, the fan housing 40 is mounted on the first connecting pipe 31 or the handle housing 212, or is simultaneously connected to the first connecting pipe 31 and the handle housing 212. The fan housing 40 and the main housing 211 are separated by at least part of the handle housing 212.

[0054] The fan housing 40 can be assembled from two half-housing units 41. The fan housing 40 is disposed at least partially around the vent 311; in other words, the fan housing 40 covers at least part of the vent 311, allowing the inner cavity of the fan housing 40 to be in fluid communication with the vent 311 and the first air duct opening 213. The fan housing 40 is provided with a second air duct opening 42 that is in fluid communication with the external environment; therefore, the vent 311 can be in fluid communication with the external environment through the second air duct opening 42.

[0055] The cooling fan 50 is housed within the fan housing 40 and is located between the second air duct opening 42 and the vent 311. For example, according to Figure 3 As shown in the vertical direction, the cooling fan 50 is located below the first connecting pipe 31 and aligned with the vent 311. The second air duct 42 is located in a second direction perpendicular to the vertical direction. Positioning the second air duct 42 and the vent 311 in different directions facilitates orderly airflow between them and prevents airflow turbulence.

[0056] In one embodiment, the cooling fan 50 is, for example, an exhaust fan. The cooling fan 50 can utilize the rotation of its impeller to generate negative pressure, drawing gas from the first connecting pipe 31 through the vent 311 and blowing it towards the second air duct 42, thereby increasing the gas flow rate. In another embodiment, the cooling fan 50 is, for example, a blower or an axial fan. The cooling fan 50 can utilize the rotation of its impeller to generate positive pressure, drawing in ambient gas from the second air duct 42 and blowing it towards the vent 311, thereby increasing the gas flow rate.

[0057] In addition, the long-handle power tool 100 also includes a manual switch 60, which can be triggered by the user. The controller 22 can detect the electrical signal generated when the manual switch 60 is triggered, and control the start and stop of the long-handle power tool 100 accordingly. It should be understood that the manual switch 60 can be, for example, a push-button switch or a trigger switch, etc., and the specific type can be selected according to the actual situation; no specific limitation is made here. For ease of description, Figure 3 The manual switch 60 uses a trigger switch as an example for demonstration. When the user presses the trigger, the long-handled power tool 100 can be turned on; when the user releases the trigger, the long-handled power tool 100 can be turned off.

[0058] To better understand, the following will be combined with Figure 6 and Figure 7 The usage process of the long-handled power tool 100 according to the embodiments of this application will be described in its entirety.

[0059] When the long-handle power tool 100 is needed, the user can operate the manual switch 60 to trigger the controller 22 to start, and start controlling the motor to drive the working component 10 to work, so that the user can use the long-handle power tool 100 to perform the work.

[0060] During the operation of the long-handled power tool 100, the controller 22 runs continuously, generating heat.

[0061] In one embodiment, during this operation, the long-handled power tool 100 can form Figure 6 The airflow path is shown as indicated by the dashed arrow. Specifically, for example... Figure 6 As shown, gas from the external environment can enter the first air duct 213 of the casing 21, flow through the heat dissipation duct 215, and then through the first connecting pipe 31. Since the front end of the first connecting pipe 31 is blocked by the wind baffle 312, the gas will flow to the second air duct 42 of the fan casing 40 and be discharged to the external environment from the second air duct 42. During the flow of the gas through the heat dissipation duct 215, it will transfer heat to the controller 22 and absorb the heat from the controller 22.

[0062] At the same time, the cooling fan 50 can generate negative pressure, drawing the gas in the first connecting pipe 31 out of the vent 311 and blowing it toward the second air duct 42, thereby accelerating the flow speed of the gas in the cooling air duct 215 and the first connecting pipe 31, carrying away more heat from the controller 22, and keeping the temperature of the controller 22 within a safe temperature range.

[0063] When debris falls onto the connecting rod assembly 30 during the operation of the long-handled power tool 100, the airflow at the second air duct 42 can blow away the debris from the connecting rod assembly 30, preventing the debris from entering the fan housing 40 and interfering with the operation of the cooling fan 50 and obstructing the flow of air.

[0064] In another embodiment, during this operation, the long-handled power tool 100 can form Figure 7 The airflow path is shown as indicated by the dashed arrow. Specifically, for example... Figure 7 As shown, gas from the external environment can enter the second air duct opening 42 of the fan housing 40, first flowing through the first connecting pipe 31. Since the front end of the first connecting pipe 31 is blocked by the wind baffle 312, the gas will flow towards the heat dissipation air duct 215. After flowing through the heat dissipation air duct 215, it will be discharged to the external environment from the first air duct opening 213 of the housing 21. During the process of flowing through the heat dissipation air duct 215, the gas will transfer heat to the controller 22 and absorb the heat from the controller 22.

[0065] At the same time, the cooling fan 50 can generate positive pressure, blowing the gas entering from the second air duct 42 toward the vent 311, thereby accelerating the flow speed of the gas in the first connecting pipe 31 and the cooling air duct 215, carrying away more heat from the controller 22, and keeping the temperature of the controller 22 within a safe temperature range.

[0066] Once the work is completed, the user can operate the manual switch 60 to stop the controller 22, thus stopping the long-handle power tool 100.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A long-handled power tool, characterized in that, The long-handle power tools include: Working components; The control component includes a housing and a controller, the housing having a first air duct opening that connects to the external environment; A linkage assembly connects the control component and the working component. The linkage assembly includes a first connecting pipe connected to the housing, and the first connecting pipe has a vent. The fan housing is connected to at least one of the first connecting pipe and the housing, and the inner cavity of the fan housing is in fluid communication with the vent and the first air duct opening; A cooling fan is located inside the fan housing; A heat dissipation duct is located between the first duct opening and the vent, and is in fluid communication with the first duct opening and the vent. The controller is located inside the heat dissipation duct.

2. The long-handled power tool as described in claim 1, characterized in that, The fan housing is connected to the first connecting pipe, and the fan housing is provided with a second air duct opening that is in fluid communication with the external environment. The fan housing is arranged to at least partially surround the air duct opening, and the cooling fan is located between the second air duct opening and the air duct opening.

3. The long-handled power tool as described in claim 2, characterized in that, The housing includes a main housing and a handle housing. The main housing is provided with the first air duct opening and the heat dissipation air duct. The handle housing extends from the main housing toward the first connecting pipe and is arranged around the first connecting pipe. The handle housing is located between the main housing and the fan housing.

4. The long-handled power tool as described in claim 1, characterized in that, The linkage assembly includes a windbreak portion located inside the first connecting pipe and blocking one end of the first connecting pipe facing the working assembly.

5. The long-handled power tool as described in claim 4, characterized in that, The windbreak is integrally formed with the first connecting pipe, the cable between the controller and the working component is housed in the first connecting pipe, and the windbreak is provided with a wire hole for the cable to pass through.

6. The long-handled power tool as described in claim 4, characterized in that, The linkage assembly further includes a plate that is housed within the first connecting tube and divides the interior of the first connecting tube into a first chamber and a second chamber. The plate extends into the first chamber to form a windbreak portion, thereby blocking one end of the first chamber facing the working component. The plate is provided with a clearance portion to avoid the vent. The first chamber and the vent are in fluid communication. The cable between the controller and the working component is housed in the second chamber.

7. The long-handled power tool as described in claim 1, characterized in that, The housing is provided with an air duct wall, which is located between the first air duct opening and the first connecting pipe and forms the heat dissipation air duct. The controller is placed in the heat dissipation air duct along a first direction, which is the length direction of the first connecting pipe or a direction parallel to the length direction of the first connecting pipe.

8. The long-handled power tool as described in claim 7, characterized in that, The air duct wall has a notch, and the controller covers the notch to isolate the heat dissipation air duct from the internal space of the housing.

9. The long-handled power tool as described in claim 8, characterized in that, The controller is embedded in the notch, and the controller's heat sink is exposed within the heat dissipation duct.

10. The long-handled power tool as described in claim 9, characterized in that, Viewed along the extension direction of the first connecting pipe, the heat sink at least partially overlaps with the first connecting pipe.

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