Casing heat dissipation structure and electric tool
By setting independent heat dissipation ducts for the motor and controller inside the power tool housing, the problem of insufficient heat dissipation of the controller in the prior art is solved, and heat dissipation of the motor and controller is achieved simultaneously, thus extending the service life of the power tool.
Patent Information
- Application Number
- CN202520034953.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-01-07
AI Technical Summary
Existing power tools cannot effectively dissipate heat from their controllers, causing the controllers to operate at high temperatures for extended periods, thus shortening the lifespan of the power tools.
The power tool housing is equipped with a first and a second independent heat dissipation duct, which are used to dissipate heat from the motor and controller, respectively. The airflow between the two is connected by a vent, so as to achieve simultaneous heat dissipation from the motor and controller.
It improves heat dissipation, extends the service life of power tools, and ensures the stability of the motor and controller under high current and long-term operation.
Smart Images
Figure CN223928655U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to electric tool technical field especially, relates to a casing heat dissipation structure and electric tool. BACKGROUND
[0002] This part provides only background information related to the present disclosure, which is not necessarily prior art.
[0003] The existing electric tool can only heat the motor when heat dissipation, and cannot heat the controller, the controller is easy to be damaged when working in high temperature state for a long time, and the service life of the electric tool is shortened. UTILITY MODEL CONTENTS
[0004] The utility model discloses a casing heat dissipation structure and electric tool.
[0005] The utility model discloses a casing heat dissipation structure, comprising:
[0006] The casing is provided with a first air inlet, a second air inlet and a first air outlet, a first heat dissipation air duct is arranged between the first air inlet and the first air outlet, a second heat dissipation air duct is arranged between the second air inlet and the first air outlet, a ventilation opening is arranged between the first heat dissipation air duct and the second heat dissipation air duct, the first heat dissipation air duct is used for heat dissipation of the motor in the casing, and the second heat dissipation air duct is used for heat dissipation of the controller in the casing.
[0007] The casing heat dissipation structure of the utility model through setting up first heat dissipation air duct and second heat dissipation air duct in the casing, when heat dissipation, the motor inhales air through the first air inlet and heat dissipation of the motor in the first heat dissipation air duct, then the air outlet, simultaneously, because the ventilation opening is arranged between the first heat dissipation air duct and the second heat dissipation air duct, the motor inhales air through the second air inlet and heat dissipation of the controller in the second heat dissipation air duct, and the air outlet, the air current flows through the ventilation opening and then the air outlet, through setting up the first heat dissipation air duct and the second heat dissipation air duct that are independent of each other, can heat the motor and the controller simultaneously, enhance the heat dissipation effect, prolong the service life.
[0008] In addition, the casing heat dissipation structure according to the utility model can also have the following additional technical features:
[0009] In some embodiments of this utility model, the housing includes a first housing portion, a first air inlet and a first air outlet are disposed on the first housing portion, the motor is disposed inside the first housing portion, and the motor is used to drive air to enter the first heat dissipation duct from the first air inlet and flow out from the first air outlet.
[0010] In some embodiments of this utility model, there are multiple first air inlets, and adjacent first air inlets are evenly spaced apart.
[0011] In some embodiments of this utility model, the first air inlet is elongated and is arranged along the extension direction of the housing.
[0012] In some embodiments of this utility model, the housing further includes a second housing portion that is independently disposed from the first housing portion, the second air inlet is disposed on the second housing portion, the controller is disposed inside the second housing portion, the ventilation port is disposed between the first housing portion and the second housing portion, and the motor is used to drive air to enter the second heat dissipation duct from the second air inlet, and flow through the ventilation port and then out from the first air outlet.
[0013] In some embodiments of this utility model, there are multiple second air inlets, all of which are located close to the controller, and all of the multiple second air inlets are elongated.
[0014] In some embodiments of this utility model, the housing further includes a third air inlet, which is disposed on the second housing portion and communicates with the second heat dissipation duct.
[0015] In some embodiments of this utility model, there are multiple third air inlets, all of which are located close to the controller, and all of the multiple third air inlets are elongated.
[0016] In some embodiments of this utility model, the housing is further provided with a second air outlet, which is connected to the first heat dissipation duct and the second heat dissipation duct.
[0017] Another aspect of this utility model proposes an electric tool, including a motor, a controller, and a housing heat dissipation structure as described in any of the preceding claims, wherein the motor and the controller are disposed within the housing. Attached Figure Description
[0018] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:
[0019] Figure 1 A schematic diagram of the structure of a power tool according to an embodiment of the present invention is shown from a first perspective.
[0020] Figure 2 A schematic diagram of the structure of a power tool according to an embodiment of the present invention is shown from a second perspective.
[0021] Figure 3 A schematic diagram of a power tool according to an embodiment of the present invention is shown from a third-person perspective.
[0022] Figure 4 A schematic diagram of a power tool according to an embodiment of the present invention is shown from a fourth perspective.
[0023] Figure 5 A partial structural diagram of a power tool according to an embodiment of the present invention is shown schematically from a fifth-angle perspective.
[0024] The attached figures are labeled as follows:
[0025] 100. Power tools;
[0026] 1. Shell; 11. First shell section; 12. Second shell section; 13. Third shell section;
[0027] 21. First air inlet; 22. Second air inlet; 23. Third air inlet;
[0028] 31. First air outlet; 32. Second air outlet;
[0029] 4. Electric motor;
[0030] 5. Controller;
[0031] 6. Ventilation openings;
[0032] 7. Saw blade assembly;
[0033] 8. Positioning plate. Detailed Implementation
[0034] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
[0035] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.
[0036] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.
[0037] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations.
[0038] In related technologies, power tools generally have two methods for heat dissipation. One method can only dissipate heat from the motor but not from the controller. If the controller is exposed to high temperatures for a long time, it is prone to damage, which shortens the service life of the power tool. The other method can dissipate heat from both the motor and the controller at the same time, but the motor and the controller are in the same heat dissipation channel structure, resulting in poor heat dissipation.
[0039] In view of this, this embodiment provides a housing heat dissipation structure, which aims to simultaneously dissipate heat from the motor 4 and the controller 5 by setting up independent first and second heat dissipation air ducts, thereby improving the heat dissipation effect and solving the above-mentioned technical problems.
[0040] like Figures 1 to 5 As shown, according to an embodiment of this utility model, a power tool 100 is proposed, including a motor 4, a controller 5, and a housing heat dissipation structure. The motor 4 and the controller 5 are disposed within the housing 1. The power tool 100 can be an electric saw (including a circular saw, jigsaw, cutting machine, etc.), an angle grinder, or an electric hammer, etc. In this embodiment, the power tool 100 is a circular saw, which also includes a saw blade assembly 7 and a positioning plate 8. Of course, the circular saw in this embodiment also has other structures and components that are present in existing circular saws. In addition, for the working principle of the circular saw, please refer to related technologies, which will not be repeated here.
[0041] The aforementioned heat dissipation structure of the housing includes a housing 1, which has a first air inlet 21, a second air inlet 22 and a first air outlet 31. A first heat dissipation duct is provided between the first air inlet 21 and the first air outlet 31, and a second heat dissipation duct is provided between the second air inlet 22 and the first air outlet 31. A ventilation opening 6 is provided between the first heat dissipation duct and the second heat dissipation duct to connect the first heat dissipation duct and the second heat dissipation duct. The first heat dissipation duct is used to dissipate heat from the motor 4 inside the housing 1, and the second heat dissipation duct is used to dissipate heat from the controller 5 inside the housing 1.
[0042] Specifically, the main heat sources in the power tool 100 are the motor 4 and the controller 5. During operation, the motor 4 and the controller 5 generate a large current and heat. If the temperature exceeds a certain limit, it will affect the stability of its operation, and may even lead to burn-out or protection failure. A first air inlet 21 and a first air outlet 31 are provided on the housing 1. The portion of the housing between the first air inlet 21 and the first air outlet 31 forms a first heat dissipation duct. The motor 4 is installed in the first heat dissipation duct, which carries away the heat dissipated by the motor 4. At the same time, a second air inlet 22 is provided on the housing 1. The portion of the housing between the second air inlet 22 and the first air outlet 31 forms a second heat dissipation duct. The controller 5 is installed in the second heat dissipation duct, which carries away the heat dissipated by the controller 5.
[0043] The heat dissipation structure of this utility model features a first and a second heat dissipation duct within the housing 1. During heat dissipation, the motor 4 draws air into the first heat dissipation duct through the first air inlet 21 to cool the motor 4, and then exits through the air outlet. Simultaneously, a ventilation opening 6 connects the first and second heat dissipation ducts, allowing the motor 4 to draw air into the second heat dissipation duct through the second air inlet 22 to cool the controller 5. During air outlet operation, the airflow passes through the ventilation opening 6 and exits through the air outlet. By establishing independent first and second heat dissipation ducts, both the motor 4 and the controller 5 can be cooled simultaneously, enhancing the heat dissipation effect and extending service life.
[0044] In some embodiments of this utility model, the housing 1 includes a first housing portion 11, a first air inlet 21 and a first air outlet 31 disposed on the first housing portion 11, and a motor 4 disposed inside the first housing portion 11. The motor 4 is used to drive air to enter the first heat dissipation duct from the first air inlet 21 and flow out from the first air outlet 31.
[0045] Specifically, the first housing 11 is fitted onto the outside of the motor 4. The first air inlet 21 is located on the first housing 11 and close to the motor 4. The motor 4 is equipped with fan blades. There are two sets of first air inlets 21, which are symmetrically arranged on the first housing 11. Each set of first air inlets 21 includes multiple first air inlets 21. Adjacent first air inlets 21 are evenly spaced, which makes the suction at the first air inlet 21 more uniform and improves the uniformity of air intake. In addition, each first air inlet 21 is elongated and is arranged along the extension direction of the housing 1. The elongated design can increase the wind speed at the first air inlet 21, enhance the suction of the intake air, and facilitate the heat dissipation of the motor 4 in the first heat dissipation duct, further improving the heat dissipation effect. During heat dissipation, the motor 4 drives the fan blades to rotate, drawing outside air into the first heat dissipation duct through the first air inlet 21. The airflow passes through the first heat dissipation duct to cool the motor 4, and then is discharged through the first air outlet 31, thereby effectively cooling the motor 4.
[0046] In some embodiments of this utility model, the housing 1 further includes a second housing 12 that is independently disposed from the first housing 11, a second air inlet 22 is disposed on the second housing 12, a controller 5 is disposed inside the second housing 12, a ventilation port 6 is disposed between the first housing 11 and the second housing 12, and a motor 4 is used to drive air to enter the second heat dissipation air duct from the second air inlet 22, and flow out from the first air outlet 31 after passing through the ventilation port 6.
[0047] Specifically, the second housing 12 is located at the handle of the power tool 100. The controller 5 is installed inside the second housing 12. The second air inlet 22 is located on the second housing 12 and close to the controller 5. The second housing 1 is connected to the first housing 1 through a vent 6. There are multiple second air inlets 22, which are evenly spaced to make the suction at the second air inlet 22 more uniform and improve the uniformity of air intake. In addition, each second air inlet 22 is elongated. The elongated design can increase the wind speed at the second air inlet 22 and enhance the suction of the intake air, which is beneficial for dissipating heat from the controller 5 in the second heat dissipation duct and further improves the heat dissipation effect. During heat dissipation, the motor 4 drives the fan blades to rotate, so that external air is drawn into the second heat dissipation duct through the second air inlet 22. The airflow flows through the second heat dissipation duct to dissipate heat from the controller 5, and then flows through the vent 6 and is discharged from the first air outlet 31, thereby effectively dissipating heat from the controller 5.
[0048] In some embodiments of this utility model, the housing 1 further includes a third air inlet 23, which is disposed on the second housing portion 12 and is connected to the second heat dissipation duct.
[0049] Specifically, there are multiple third air inlets 23, all of which are located close to the controller 5. The multiple third air inlets 23 are evenly spaced, which makes the suction force at the third air inlet 23 more uniform and improves the uniformity of air intake. The multiple third air inlets 23 are all slender. The slender design can increase the wind speed at the third air inlet 23, enhance the suction force of the intake air, and help to dissipate heat from the controller 5 in the second heat dissipation air duct, further improving the heat dissipation effect.
[0050] In some embodiments of this utility model, the housing 1 is further provided with a second air outlet 32, which is connected to the first heat dissipation duct and the second heat dissipation duct. Specifically, the housing 1 also includes a third housing portion 13, which is connected to the first housing portion 11 and the second housing portion 12. The second air outlet 32 is disposed on the third housing portion 13. During heat dissipation, the motor 4 drives the fan blades to rotate, so that external air is drawn into the first heat dissipation duct through the first air inlet 21 to dissipate heat from the motor 4, and at the same time, it is drawn into the second heat dissipation duct through the second air inlet 22 to dissipate heat from the controller 5. Then, the air is discharged through the first air outlet 31 and the second air outlet 32, further improving the heat dissipation efficiency and effect.
[0051] The power tool 100 of this application includes a housing heat dissipation structure. The housing heat dissipation structure sets up independent first and second heat dissipation air channels in the housing 1. When dissipating heat, it can simultaneously dissipate heat from the motor 4 and the controller 5, ensuring normal air circulation for the motor 4 and the controller 5, achieving the effect of rapid cooling and temperature reduction, extending the service life of the power tool 100, and enabling high current and long-term operation to meet user needs.
[0052] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A heat dissipation structure for a casing, characterized in that, include: The housing has a first air inlet, a second air inlet, and a first air outlet. A first heat dissipation duct is provided between the first air inlet and the first air outlet, and a second heat dissipation duct is provided between the second air inlet and the first air outlet. A ventilation opening is provided between the first heat dissipation duct and the second heat dissipation duct to connect the first heat dissipation duct and the second heat dissipation duct. The first heat dissipation duct is used to dissipate heat from the motor inside the housing, and the second heat dissipation duct is used to dissipate heat from the controller inside the housing.
2. The heat dissipation structure of the casing according to claim 1, characterized in that, The housing includes a first housing portion, with a first air inlet and a first air outlet disposed on the first housing portion. The motor is disposed inside the first housing portion and is used to drive air to enter the first heat dissipation duct from the first air inlet and flow out from the first air outlet.
3. The heat dissipation structure of the casing according to claim 1, characterized in that, There are multiple first air inlets, and adjacent first air inlets are evenly spaced apart.
4. The heat dissipation structure of the casing according to claim 1, characterized in that, The first air inlet is elongated and is positioned along the extension direction of the housing.
5. The heat dissipation structure of the casing according to claim 2, characterized in that, The housing also includes a second housing that is independently disposed from the first housing. The second air inlet is disposed on the second housing. The controller is disposed inside the second housing. The ventilation opening is disposed between the first housing and the second housing. The motor is used to drive air to enter the second heat dissipation duct from the second air inlet, and flow through the ventilation opening and then out from the first air outlet.
6. The heat dissipation structure of the casing according to claim 1, characterized in that, There are multiple second air inlets, all of which are located close to the controller, and all of the multiple second air inlets are elongated.
7. The heat dissipation structure of the casing according to claim 5, characterized in that, The housing also includes a third air inlet, which is located on the second housing portion and is connected to the second heat dissipation duct.
8. The heat dissipation structure of the casing according to claim 7, characterized in that, There are multiple third air inlets, all of which are located close to the controller, and all of the third air inlets are elongated.
9. The heat dissipation structure of the casing according to any one of claims 1 to 8, characterized in that, The housing is also provided with a second air outlet, which is connected to the first heat dissipation duct and the second heat dissipation duct.
10. A power tool, characterized in that, It includes a motor, a controller, and a housing heat dissipation structure as described in any one of claims 1 to 9, wherein the motor and the controller are disposed within the housing.