A hand-held high-power electric tool with rapid heat dissipation

Abstract

The utility model discloses solve the problem that the heat dissipation structure of current electric tool is difficult to heat the control panel fully, provide a kind of handheld high-power electric tool of quick heat dissipation, including shell, motor, power supply and control panel, wherein motor and control panel are respectively arranged in the inside of shell;Power supply is detachably arranged on the outside of shell, and power supply is also electrically connected with the control panel in shell, and control panel is also electrically connected with motor;The rotating shaft of motor is also transmission connection with the action part of electric tool;The control panel is fixedly arranged in the one end of shell close to power supply;Shell is provided with heat dissipation area;Heat dissipation area is provided with a plurality of heat dissipation holes, and heat dissipation hole is towards the side of control panel facing power supply;The gap for passing airflow is also left between the two sides of control panel and shell;The rotating shaft of motor is also provided with fan blade, and shell is provided with the air outlet hole corresponding with fan blade;Make airflow pass the two sides of control panel, and fully contact with control panel, realize efficient heat dissipation.

Description

Technical Field

[0001] This utility model relates to the field of power tool technology, and in particular to a handheld high-power power tool with rapid heat dissipation. Background Technology

[0002] Power tools are widely used in various locations due to their portability. Power tools typically contain circuit boards for control, and the electronic components on these boards generate heat during operation, especially the switching elements. Therefore, it is necessary to provide heat dissipation components on the housing corresponding to the circuit board, as shown in patent CN217833552U. However, existing heat dissipation structures are usually located on the side of the circuit board closer to the motor, or towards the circuit board attached to the housing. This results in limited effective contact between the airflow inside the housing and the circuit board as the motor rotates, only carrying away heat dissipated from the circuit board into the surrounding space, leading to low heat dissipation efficiency. Therefore, a power tool structure with rapid heat dissipation is needed. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies and provide a handheld high-power electric tool with rapid heat dissipation.

[0004] To solve the above problems, the present invention adopts the following solution: A handheld high-power power tool with rapid heat dissipation includes a housing, a motor, a power supply, and a control board. The motor and control board are respectively housed inside the housing. The power supply is detachably located on the outside of the housing and is electrically connected to the control board inside the housing. The control board is also electrically connected to the motor. The motor's shaft is also connected to the moving parts of the power tool. The control board is fixedly located inside the housing near the power supply. A heat dissipation area is provided on the housing, surrounding the control board. The heat dissipation area has several heat dissipation holes facing the side of the control board facing the power supply. Gaps are left between the control board and the housing on both sides to allow airflow to pass through and flow towards the motor area. The motor's shaft is also equipped with fan blades for generating airflow, and the housing has air outlets corresponding to the fan blades.

[0005] Furthermore, the heat dissipation areas are located on both sides of the control board, with the two heat dissipation areas arranged opposite each other.

[0006] Furthermore, the outer casing is also provided with a retractable structure on the side of the control board near the motor. The retractable structure has a larger aperture at the end near the control board and a smaller aperture on the side near the motor.

[0007] Furthermore, a partition is provided inside the outer shell, which is located between the control board and the heat dissipation holes; an airflow channel is provided through the partition.

[0008] Furthermore, the airflow channel is located in the middle of the partition, and the airflow channel is directly opposite the control panel.

[0009] Furthermore, a gap is provided between the partition and the control plate to facilitate airflow.

[0010] Furthermore, the outer casing is provided with several inwardly protruding abutment blocks, which respectively contact the edge of the control plate.

[0011] Furthermore, the power source is a battery pack, and the battery pack is connected to the outer casing by a detachable snap-fit ​​connection.

[0012] Furthermore, the output voltage of the battery pack is 18V~48V.

[0013] Furthermore, the outer casing is also provided with a sliding button; the sliding button is connected to a push switch via a connecting rod; the connecting rod is L-shaped in general, with one end fixedly connected to the sliding button and the other end abutting against the push switch inside the outer casing; the push switch is fixedly installed inside the outer casing.

[0014] Furthermore, the heat dissipation area is provided with a detachable heat dissipation plate, on which a number of heat dissipation holes are distributed; the heat dissipation plate is installed on the through hole of the housing through a snap-fit ​​structure.

[0015] The beneficial effects of this utility model are as follows: By setting a heat dissipation area on the outer casing facing the power supply side of the control board, airflow can pass through both sides of the control board and make full contact with the control board, thus removing heat from the control board more efficiently. By setting up a baffle, airflow is allowed to enter the control board on the other side of the baffle through the airflow channel near the middle of the baffle, which enhances the contact between the airflow and the control board and improves heat dissipation efficiency. By setting a contraction structure, the airflow and the basic effect of the control board near the motor are enhanced, thereby improving heat dissipation efficiency. By incorporating a removable heat sink, the intake heat dissipation area can be easily cleaned, ensuring intake efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of Example 1; Figure 2 This is an exploded view of the overall structure of Example 1; Figure 3 This is a cross-sectional view of the interior of the outer shell of Example 1.

[0017] Explanation of the symbols in the attached diagram: 1. Outer shell; 11. Vent vent; 12. Retractable structure; 13. Partition; 14. Clamping block; 2. Motor; 21. Fan blade; 3. Control board; 4. Heat dissipation area; 41. Heat dissipation plate; 5. Sliding button; 6. Connecting rod; 7. Press switch. Detailed Implementation

[0018] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0019] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the figures only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0020] Example 1: like Figures 1-3 As shown, a handheld high-power power tool with rapid heat dissipation includes a housing 1, a motor 2, a power supply, and a control board 3. The motor 2 and the control board 3 are respectively disposed inside the housing 1. The power supply is detachably disposed on the outside of the housing 1 and is also electrically connected to the control board 3 inside the housing 1. The control board 3 is also electrically connected to the motor 2. The rotating shaft of the motor 2 is also connected to the moving parts of the power tool. The control board 3 is fixedly disposed inside the housing 1 near the power supply. The housing 1 is provided with a heat dissipation area 4, which is located around the control board 3. In this example, the heat dissipation area 4 is located on the left and right sides of the control board 3, and the heat dissipation areas 4 on both sides are arranged opposite each other. The heat dissipation area 4 is provided with a plurality of heat dissipation holes, which face the side of the control board 3 facing the power supply. There are gaps between the two sides of the control board 3 and the housing 1 for airflow to pass through and flow towards the motor 2 area. The rotating shaft of the motor 2 is also provided with fan blades 21 for generating airflow. The housing 1 is provided with air outlets 11 corresponding to the fan blades 21. In this example, the air outlets 11 are located on the side of the fan blades 21 away from the motor 2. When the airflow enters the housing 1, it first passes through the area below the control board 3, and then flows from both sides of the circuit board to the area above the circuit board where the motor 2 is located. In this way, the airflow passes through both sides of the circuit board and the surface of the circuit board, increasing the heat dissipation efficiency.

[0021] The outer casing 1 is also provided with a partition 13, which is located between the control board 3 and the heat dissipation hole. An airflow channel is provided through the partition 13. In this example, the airflow channel is located in the middle of the partition 13 and faces the control board 3. The airflow channel is an opening of a set width, and the two ends of the opening are respectively connected to the outer casing 1 on both sides. A gap is also provided between the partition 13 and the control board 3 to facilitate the passage of airflow. In this way, after the heat dissipation airflow enters the interior of the outer casing 1, it will first move along the partition 13 to the area near the middle of the partition 13, and then enter the other side of the partition 13 along the airflow channel, fully contact the control board 3 on that side, and take away the heat emitted by the control board 3.

[0022] The outer casing 1 is provided with several inwardly protruding clamping blocks 14. The clamping blocks 14 contact the edge of the control plate 3 respectively. Through the action of the clamping blocks 14, while fixing the control plate 3, a gap is left between the outer casing 1 and the edge of the control plate 3 to facilitate the passage of airflow.

[0023] The outer casing 1 is also provided with a retractable structure 12 on the side of the control board 3 near the motor 2. The retractable structure 12 has a larger aperture at the end near the control board 3 and a smaller aperture on the side near the motor 2. In this way, the airflow passing through the edge of the control board 3 will flow towards the middle area near the control board 3 along the retractable structure 12, which can effectively remove the heat emitted by the control board 3. In addition, the outer diameter of the retractable structure 12 is small after it is retracted, which also makes it convenient to hold from the outside.

[0024] The power source is a battery pack, which is detachably connected to the outer casing 1 using a snap-fit ​​mechanism. Separating the battery pack from the casing 1 facilitates charging and portability. Furthermore, the battery pack can be replaced to extend the operating range. The battery pack has an output voltage of 18V~48V, which is higher than that of a traditional 12V battery pack. This higher output voltage allows for higher power output, and combined with a more efficient heat dissipation method, it meets the operational needs of higher-powered power tools.

[0025] The outer casing 1 is also provided with a sliding button 5; the sliding button 5 is connected to a push switch 7 via a connecting rod 6; the connecting rod 6 is generally L-shaped, with one end fixedly connected to the sliding button 5 and the other end abutting against the push switch 7 inside the outer casing 1; the push switch 7 is fixedly installed inside the outer casing 1; the push switch 7 is also electrically connected to the control board 3; when the sliding button 5 is slid, the push switch 7 can be driven to move through the connecting rod 6, thereby controlling the effect of the switch motor 2, which is convenient for handheld control.

[0026] The heat dissipation area 4 is provided with a detachable heat dissipation plate 41, on which a number of heat dissipation holes are distributed. The heat dissipation plate 41 is installed on the through hole of the housing by a snap-fit ​​structure. Therefore, traditional power tools, including angle grinders, electric circular saws, etc., are used in environments with dense dust. Therefore, the detachable heat dissipation plate 41 facilitates cleaning.

[0027] It should be noted that an angle grinder is used for illustration in the accompanying drawings of this embodiment. In some other embodiments, it can also be used in other power tools such as electric circular saws.

[0028] During implementation, by setting a heat dissipation area 4 on the outer casing 1 facing the power supply side of the control board 3, the airflow can fully pass through both sides of the control board 3 and come into contact with the control board 3, thus more efficiently removing heat from the control board 3; by setting a partition 13, the airflow enters the control board 3 on the other side of the partition 13 through the airflow channel near the middle of the partition 13, enhancing the contact between the airflow and the control board 3 and improving heat dissipation efficiency; by setting a contraction structure 12, the basic effect of the airflow and the control board 3 near the motor 2 side is enhanced, improving heat dissipation efficiency; by setting a removable heat dissipation plate 41, it is convenient to clean the air intake heat dissipation area 4, ensuring air intake efficiency.

[0029] The above description is merely a specific example of this utility model and does not constitute any limitation on this utility model. Obviously, those skilled in the art, after understanding the content and principle of this utility model, may make various modifications and changes in form and details without departing from the principle and structure of this utility model. However, these modifications and changes based on the concept of this utility model are still within the protection scope of the claims of this utility model.

Claims

1. A handheld high-power electric tool with rapid heat dissipation, comprising a housing (1), a motor (2), a power supply, and a control board (3), wherein the motor (2) and the control board (3) are respectively disposed inside the housing (1); the power supply is detachably disposed on the outside of the housing (1), and the power supply is also electrically connected to the control board (3) inside the housing (1), and the control board (3) is also electrically connected to the motor (2); the shaft of the motor (2) is also connected to the moving part of the electric tool; characterized in that, The control board (3) is fixedly installed inside the housing (1) at one end near the power source; a heat dissipation area (4) is provided on the housing (1), and the heat dissipation area (4) is located around the control board (3); a number of heat dissipation holes are provided on the heat dissipation area (4), and the heat dissipation holes face the side of the control board (3) facing the power source; there is also a gap between the two sides of the control board (3) and the housing (1) for airflow to pass through, so that the airflow flows to the motor (2) area; a fan blade (21) for generating airflow is also provided on the rotating shaft of the motor (2), and an air outlet (11) corresponding to the fan blade (21) is provided on the housing (1).

2. The handheld high-power power tool with rapid heat dissipation according to claim 1, characterized in that, The heat dissipation area (4) is located on both sides of the control board (3), and the heat dissipation areas (4) on both sides are arranged opposite to each other.

3. A handheld high-power power tool with rapid heat dissipation according to claim 1, characterized in that, The outer casing (1) is also provided with a shrinkable structure (12) on the side of the control board (3) near the motor (2). The shrinkable structure (12) has a larger aperture at the end near the control board (3) and a smaller aperture at the side near the motor (2).

4. A handheld high-power power tool with rapid heat dissipation according to claim 1, characterized in that, The outer shell (1) is also provided with a partition (13), which is located between the control board (3) and the heat dissipation hole; an airflow channel is provided on the partition (13) that passes through the partition (13).

5. A handheld high-power power tool with rapid heat dissipation according to claim 4, characterized in that, The airflow channel is located in the middle of the partition (13) and faces the control panel (3).

6. A handheld high-power power tool with rapid heat dissipation according to claim 4, characterized in that, A gap is also provided between the partition (13) and the control plate (3) to facilitate airflow.

7. A handheld high-power power tool with rapid heat dissipation according to claim 1, characterized in that, The outer shell (1) is provided with a number of inwardly protruding abutment blocks (14), which contact the edge of the control plate (3) respectively.

8. A handheld high-power power tool with rapid heat dissipation according to claim 1, characterized in that, The power source is a battery pack, and the battery pack is connected to the outer casing (1) by a detachable snap-fit ​​connection.

9. A handheld high-power power tool with rapid heat dissipation according to claim 8, characterized in that, The battery pack has an output voltage of 18V~48V.

10. A handheld high-power power tool with rapid heat dissipation according to claim 1, characterized in that, The heat dissipation area (4) is provided with a detachable heat dissipation plate (41), and a number of heat dissipation holes are distributed on the heat dissipation plate (41); the heat dissipation plate (41) is installed on the through hole of the shell by a snap-fit ​​structure.

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