A heat dissipation structure for a brushless motor angle grinder

Abstract

This utility model provides a heat dissipation structure for a brushless motor angle grinder. The heat dissipation structure includes: an angle grinder body and a drive assembly. The angle grinder body has a mounting chamber. The drive assembly is installed inside the angle grinder body and the mounting chamber. A grinding disc is fixedly connected to the output end of the drive assembly. A protective cover is fixedly connected to the outside of the mounting chamber. A lower connecting seat is provided at the lower part of the angle grinder body. The heat dissipation structure of this utility model provides an air intake impeller that, in conjunction with the air intake and airflow inlet, introduces a low-temperature airflow into the machine body. Simultaneously, a sliding first protective plate, secured by a locking block and slot, prevents dust and debris from entering, protecting internal components. The water flowing through the water-cooling assembly works synergistically with the cold airflow to quickly absorb the heat generated by the drive assembly inside the mounting chamber. Furthermore, the water flow ultimately sprays onto the grinding disc to further assist in cooling, improving the overall heat dissipation effect.

Description

Technical Field

[0001] This utility model relates to the field of angle grinder technology, and in particular to a heat dissipation structure for a brushless motor angle grinder. Background Technology

[0002] An angle grinder, also known as a grinding machine or disc grinder, is an electric tool that uses a high-speed rotating grinding wheel to grind, cut, remove rust, and polish metal or stone components.

[0003] Existing brushless motor angle grinders generally rely on air cooling for heat dissipation, which involves using fan blades on the motor shaft to drive airflow for heat dissipation. However, this method has certain shortcomings: it does not adequately cover some heat sources, and the cooling effect decreases after prolonged use. In addition, the air inlet lacks a protective structure, allowing dust to easily enter the machine body through the air inlet and adhere to the surface of the heat dissipation components, causing damage.

[0004] Therefore, it is necessary to provide a heat dissipation structure for a brushless motor angle grinder to solve the above-mentioned technical problems. Utility Model Content

[0005] This utility model provides a heat dissipation structure for a brushless motor angle grinder, which solves the problems of insufficient coverage of some heat sources by air cooling, decreased cooling effect after long-term use, and dust easily entering the machine body through the air inlet and causing damage.

[0006] To solve the above-mentioned technical problems, the present invention provides a heat dissipation structure for a brushless motor angle grinder, comprising: an angle grinder body and a drive assembly. The angle grinder body is provided with an installation chamber. The drive assembly is installed inside the angle grinder body and the installation chamber. A grinding disc is fixedly connected to the output end of the drive assembly. A protective cover is fixedly connected to the outside of the installation chamber. A lower end connecting seat is provided at the lower part of the angle grinder body. A connecting wire is electrically connected to the lower end connecting seat. Air inlet protection parts are provided on both sides of the connecting wire. An auxiliary heat dissipation part is provided on the outer wall of the angle grinder body. A water cooling assembly, a heat dissipation fin assembly, and a side handle are provided on the installation chamber.

[0007] Preferably, the drive assembly includes a fixed plate and a drive shaft. A brushless motor is fixedly connected to the fixed plate. An output shaft is provided at the output end of the brushless motor. A first bevel gear is fixedly connected to the output shaft. The drive shaft is rotatably connected to the mounting chamber. A second bevel gear is fixedly connected to the drive shaft. The second bevel gear meshes with the first bevel gear. An air intake wheel is fixedly connected to the output shaft. The fixed plate has evenly distributed air passages.

[0008] Preferably, the air intake protection part includes a fixing plate, a first protective plate and a slot, the fixing plate is fixedly connected to the lower end connecting seat, and the fixing plate has equidistantly distributed air intake ports.

[0009] Preferably, the first protective plate is slidably connected to the lower connecting seat, and the lower ends of the first protective plate are provided with locking blocks on both sides, the locking blocks corresponding to the locking slots, and the lower end of the first protective plate is provided with a toggle block in the middle.

[0010] Preferably, the auxiliary heat dissipation part includes a second protective plate, which is rotatably connected to the outer wall of the angle grinder body. The second protective plate has heat dissipation holes and a locking element.

[0011] Preferably, the water-cooling assembly includes a water supply pipe that passes through the installation chamber. The water supply pipe has an inlet at one end near the lower part of the installation chamber and an outlet at the other end near the grinding disc.

[0012] Preferably, the two ends of the water supply pipe are respectively fixedly connected to a first fixing seat and a second fixing seat. The first fixing seat is close to the water inlet and fixedly connected to the lower part of the installation chamber, and the second fixing seat is close to the water outlet and fixedly connected to the upper part of the installation chamber.

[0013] Compared with related technologies, the heat dissipation structure of the brushless motor angle grinder provided by this utility model has the following beneficial effects:

[0014] This utility model provides a heat dissipation structure for a brushless motor angle grinder. The air intake wheel, in conjunction with the air intake and airflow inlet, introduces a low-temperature airflow into the machine body. At the same time, the sliding first protective plate, secured by a locking block and slot, prevents dust and debris from entering and protects the internal components. The water flow through the water-cooling component works synergistically with the cold airflow to quickly absorb the heat generated by the drive components in the installation room. Furthermore, the water flow ultimately sprays onto the grinding disc to further assist in cooling, improving the overall heat dissipation effect. Attached Figure Description

[0015] Figure 1 A schematic diagram of a preferred embodiment of the heat dissipation structure for the brushless motor angle grinder provided by this utility model;

[0016] Figure 2 This is a schematic diagram of the installation chamber and water-cooling components in this utility model;

[0017] Figure 3 This is a schematic diagram of the drive component in this utility model;

[0018] Figure 4 This is a schematic diagram of the air intake protection part in this utility model;

[0019] Figure 5 This is a schematic diagram of the auxiliary heat dissipation part in this utility model.

[0020] Numbered in the diagram: 1. Angle grinder body, 2. Mounting chamber, 3. Drive assembly, 31. Fixing plate, 32. Brushless motor, 33. Output shaft, 34. First bevel gear, 35. Drive shaft, 36. Second bevel gear, 37. Air intake wheel, 38. Air inlet, 4. Grinding disc, 5. Protective cover, 6. Lower connecting seat, 7. Connecting wire, 8. Air intake protection part, 81. Fixing plate, 82. Air inlet, 83. First protective plate, 84. Slot, 85. Locking block, 86. Actuating block, 9. Auxiliary heat dissipation part, 91. Second protective plate, 92. Heat dissipation hole, 93. Locking element, 10. Water cooling assembly, 101. Water supply pipe, 102. Water inlet, 103. Water outlet, 104. First fixing seat, 105. Second fixing seat, 11. Heat dissipation fin assembly, 12. Side handle. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in, Figure 1 A schematic diagram of a preferred embodiment of the heat dissipation structure for the brushless motor angle grinder provided by this utility model;

[0023] Figure 2 This is a schematic diagram of the installation chamber and water-cooling components in this utility model;

[0024] Figure 3 This is a schematic diagram of the drive component in this utility model;

[0025] Figure 4 This is a schematic diagram of the air intake protection part in this utility model;

[0026] Figure 5 This is a schematic diagram of the auxiliary heat dissipation part in this utility model.

[0027] The heat dissipation structure of the brushless motor angle grinder includes: an angle grinder body 1 and a drive assembly 3. The angle grinder body 1 is provided with a mounting chamber 2. The drive assembly 3 is installed inside the angle grinder body 1 and the mounting chamber 2. A grinding disc 4 is fixedly connected to the output end of the drive assembly 3. A protective cover 5 is fixedly connected to the outside of the mounting chamber 2. A lower end connecting seat 6 is provided at the lower part of the angle grinder body 1. A connecting wire 7 is electrically connected to the lower end connecting seat 6. Air intake protection parts 8 are provided on both sides of the connecting wire 7. An auxiliary heat dissipation part 9 is provided on the outer wall of the angle grinder body 1. A water cooling assembly 10, a heat dissipation fin assembly 11, and a side handle 12 are provided on the mounting chamber 2.

[0028] After the drive component 3 is started, it drives the grinding disc 4 to rotate and grind. At the same time, the low-temperature airflow from the outside enters through the air intake protection section 8 and then flows into the interior of the angle grinder body 1. During this period, the water cooling component is connected to an external water source and flows through the installation chamber 2. After absorbing heat to assist in heat dissipation, it flows out and sprays onto the grinding disc 4. When the equipment is not in use, the air intake protection section 8 prevents dust and debris from entering the interior of the machine.

[0029] The drive assembly 3 includes a fixed plate 31 and a drive shaft 35. A brushless motor 32 is fixedly connected to the fixed plate 31. An output shaft 33 is provided at the output end of the brushless motor 32. A first bevel gear 34 is fixedly connected to the output shaft 33. The drive shaft 35 is rotatably connected to the mounting chamber 2. A second bevel gear 36 is fixedly connected to the drive shaft 35. The second bevel gear 36 meshes with the first bevel gear 34. An air intake wheel 37 is fixedly connected to the output shaft 33. The fixed plate 31 has evenly distributed air passages 38.

[0030] The brushless motor 32 drives the first bevel gear 34 to rotate through the output shaft 33. The first bevel gear 34 meshes with the second bevel gear 36, which in turn drives the transmission shaft 35 to rotate, thereby realizing the rotation of the grinding disc 4. When the air intake wheel 37 on the output shaft 33 rotates with the output shaft 33, it allows the low-temperature airflow from the outside to enter the interior of the angle grinder body 1 through the air intake protection part 8 and the airflow port 38.

[0031] The air intake protection part 8 includes a fixing plate 81, a first protection plate 83 and a slot 84. The fixing plate 81 is fixedly connected to the lower end connecting seat 6, and the fixing plate 81 has air intake ports 82 that are evenly distributed.

[0032] External air enters the angle grinder body 1 through the air inlet 82, providing sufficient cooling airflow for the heat dissipation structure. The first protective plate 83 is slidably connected to the lower connecting seat 6. When the equipment is not in use, the first protective plate 83 can be slid to cover the air inlet 82, which can prevent dust and debris from entering the machine body through the air inlet 82.

[0033] The first protective plate 83 is slidably connected to the lower connecting seat 6. The lower ends of the first protective plate 83 are provided with locking blocks 85 on both sides, and the locking blocks 85 correspond to the locking slots 84.

[0034] A toggle block 86 is provided at the lower middle of the first protective plate 83.

[0035] The first protective plate 83 can be slid by moving the toggle block 86, and the locking block 85 and the locking slot 84 can be fixed to prevent the first protective plate 83 from sliding randomly.

[0036] The auxiliary heat dissipation part 9 includes a second protective plate 91, which is rotatably connected to the outer wall of the angle grinder body 1. The second protective plate 91 has heat dissipation holes 92 and a locking element 93.

[0037] The second protective plate 91 is rotatably connected to the outer wall of the angle grinder body 1. The second protective plate 91 can be locked by the locking member 93 to prevent the second protective plate 91 from opening automatically due to vibration or other factors during the operation of the equipment.

[0038] The water-cooling assembly 10 includes a water supply pipe 101 that passes through the installation chamber 2. The end of the water supply pipe 101 near the lower part of the installation chamber 2 is provided with a water inlet 102, and the end of the water supply pipe 101 near the grinding disc 4 is provided with a water outlet 103.

[0039] The inlet 102 is connected to an external water source. The water flows through the water pipe 101 through the interior of the installation chamber 2, which helps the cold airflow brought in by the air intake wheel 37 to quickly absorb the heat generated by the drive component 3 when it is working in the installation chamber 2, thereby increasing the heat dissipation effect. Then, the water flows out from the outlet 103 and is sprayed onto the grinding disc 4.

[0040] The two ends of the water pipe 101 are respectively fixedly connected to a first fixing seat 104 and a second fixing seat 105. The first fixing seat 104 is close to the water inlet 102 and fixedly connected to the lower part of the installation chamber 2. The second fixing seat 105 is close to the water outlet 103 and fixedly connected to the upper part of the installation chamber 2.

[0041] The first fixing seat 104 and the second fixing seat 105 fix the two ends of the water supply pipe 101 to the lower and upper parts of the installation chamber 2, respectively, which can ensure the installation stability of the water supply pipe 101 in the installation chamber 2 and prevent the water supply pipe 101 from being displaced or falling off due to vibration during grinding when the equipment is working.

[0042] The working principle of the heat dissipation structure of the brushless motor angle grinder provided by this utility model is as follows:

[0043] After the drive component 3 is started, it drives the grinding disc 4 to rotate and grind. At the same time, the low-temperature airflow from the outside enters through the air intake protection section 8 and then flows into the interior of the angle grinder body 1. During this period, the water cooling component is connected to an external water source and flows through the installation chamber 2. After absorbing heat to assist in heat dissipation, it flows out and sprays onto the grinding disc 4. When the equipment is not in use, the air intake protection section 8 prevents dust and debris from entering the interior of the machine.

[0044] Compared with related technologies, the heat dissipation structure of the brushless motor angle grinder provided by this utility model has the following beneficial effects:

[0045] The air intake wheel 37, together with the air intake 82 and the airflow port 38, introduces low-temperature airflow into the machine body. At the same time, it can prevent dust and debris from entering by sliding the first protective plate 83 and fixing it with the help of the clip 85 and the slot 84, thus protecting the internal components. The water flow through the water cooling component 10 works in synergy with the cold airflow to quickly absorb the heat generated by the drive component 3 in the installation chamber 2. The water flow finally sprays onto the grinding plate 4 to further assist in cooling and improve the overall heat dissipation effect.

[0046] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A heat dissipation structure for a brushless motor angle grinder, characterized in that, include: An angle grinder body and drive assembly are provided. The angle grinder body is provided with an installation chamber. The drive assembly is installed inside the angle grinder body and the installation chamber. A grinding disc is fixedly connected to the output end of the drive assembly. A protective cover is fixedly connected to the outside of the installation chamber. A lower end connecting seat is provided at the lower part of the angle grinder body. A connecting wire is electrically connected to the lower end connecting seat. Air intake protection parts are provided on both sides of the connecting wire. An auxiliary heat dissipation part is provided on the outer wall of the angle grinder body. A water cooling assembly, heat dissipation fins and a side handle are provided on the installation chamber.

2. The heat dissipation structure of the brushless motor angle grinder according to claim 1, characterized in that, The drive assembly includes a fixed plate and a drive shaft. A brushless motor is fixedly connected to the fixed plate. An output shaft is provided at the output end of the brushless motor. A first bevel gear is fixedly connected to the output shaft. The drive shaft is rotatably connected to the mounting chamber. A second bevel gear is fixedly connected to the drive shaft. The second bevel gear meshes with the first bevel gear. An air intake wheel is fixedly connected to the output shaft. The fixed plate has evenly distributed air passages.

3. The heat dissipation structure of the brushless motor angle grinder according to claim 1, characterized in that, The air intake protection part includes a fixing plate, a first protective plate and a slot. The fixing plate is fixedly connected to the lower connecting seat, and the fixing plate has air intakes that are evenly distributed.

4. The heat dissipation structure of the brushless motor angle grinder according to claim 3, characterized in that, The first protective plate is slidably connected to the lower connecting seat. The lower end of the first protective plate is provided with locking blocks on both sides, and the locking blocks correspond to the locking slots. The lower end of the first protective plate is provided with a toggle block in the middle.

5. The heat dissipation structure of the brushless motor angle grinder according to claim 1, characterized in that, The auxiliary heat dissipation unit includes a second protective plate, which is rotatably connected to the outer wall of the angle grinder body. The second protective plate has heat dissipation holes and a locking component.

6. The heat dissipation structure of the brushless motor angle grinder according to claim 1, characterized in that, The water-cooling assembly includes a water supply pipe that passes through the installation chamber. The water supply pipe has an inlet at one end near the lower part of the installation chamber and an outlet at the other end near the grinding disc.

7. The heat dissipation structure of the brushless motor angle grinder according to claim 6, characterized in that, The water supply pipe is fixedly connected to a first fixing seat and a second fixing seat at both ends. The first fixing seat is close to the water inlet and fixedly connected to the lower part of the installation chamber, and the second fixing seat is close to the water outlet and fixedly connected to the upper part of the installation chamber.

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