A brushless hub motor for energy-saving lawn mower
By designing protection, drainage and dredging components in brushless hub motors, the problem of heat dissipation obstacles caused by grass blade accumulation is solved, and efficient heat dissipation of brushless motors and avoid overheating is achieved.
Patent Information
- Application Number
- CN202410743934.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2044-06-11
AI Technical Summary
When working, the brushless hub motor in the lawn mower is prone to block heat dissipation due to the accumulation of grass leaves, resulting in overheating.
A brushless hub motor including heat dissipation holes, protective components, drainage components and dredging components is designed. The hub is fixed by threaded rods, the bent rods and the round hole frame are used to generate airflow and triangles to clean grass blades to ensure heat. The emission and heat dissipation holes are unobstructed.
It effectively avoids the clogging of the heat dissipation holes by grass leaves, improves the heat dissipation efficiency of the brushless motor, prevents overheating, and ensures the normal operation of the lawn mower.
Smart Images
Figure CN118630962B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of brushless hub motors, in particular to a brushless hub motor for an energy-saving lawn mower. Background Art
[0002] The brushless DC motor is composed of a motor body and a driver. It is a typical mechatronics product. Since the brushless DC motor is operated in an automatic manner, it does not need an additional starting winding on the rotor like a synchronous motor that starts under heavy load under variable frequency speed regulation. It also does not produce oscillation and loss of step when the load changes suddenly. The permanent magnets of small and medium-capacity brushless DC motors are now mostly made of rare earth neodymium iron boron materials with high magnetic energy levels.
[0003] When the lawn mower is working, it needs to be driven by the brushless hub motor to move. When the lawn mower moves above the grass to work, the grass blades cut by the lawn mower will splash everywhere. Some longer grass blades are easily entangled in the heat dissipation of the brushless hub motor. When the grass blades accumulate more and more, the grass blades are likely to block the heat dissipation of the brushless hub motor. The heat generated by the brushless hub motor cannot be discharged, which can easily cause the brushless hub motor to overheat. Summary of the invention
[0004] The object of the present invention is to provide a brushless hub motor for an energy-saving lawn mower to solve the problems raised in the above-mentioned background technology.
[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:
[0006] The present invention is a brushless wheel hub motor for an energy-saving lawn mower, comprising a brushless motor, a heat dissipation hole is provided at the end of the brushless motor, a wheel hub is fixedly connected to the surface of the brushless motor, the wheel hub fixes the tire of the lawn mower, the brushless motor is fixed to the moving part of the lawn mower by a threaded rod, after the brushless motor is started, the brushless motor can drive the tire to rotate through the wheel hub, the end of the brushless motor is fixedly connected to the threaded rod, the end of the brushless motor is provided with a protective component, the interior of the protective component is provided with a drainage component, and the end of the protective component away from the brushless motor is provided with a dredging component;
[0007] The protective component includes a round hole frame, a bent rod is fixedly connected to the surface of the round hole frame, a socket block is fixedly connected to the surface of the bent rod, a round hole rod is fixedly connected to the surface of the wheel hub, a spring sheet is fixedly connected to the surface of the round hole rod, an end of the spring sheet away from the round hole rod is fixedly connected to the plug block, and a contact ring is rotatably connected to the surface of the round hole frame.
[0008] Furthermore, the number of the threaded rods is set to two, and the two threaded rods are symmetrically arranged with the brushless motor as the center, the inner wall of the circular hole frame is in contact with the surface of the brushless motor, and the number of the circular hole frames is set to two, and the ends of the two threaded rods away from the brushless motor pass through the circular hole frame and extend to the outer end of the circular hole frame.
[0009] Furthermore, one end of the bent rod away from the round hole frame contacts the inner wall of the round hole rod, one end of the plug block away from the spring sheet contacts the inner wall of the plug block, and the contact ring is arranged at one end of the round hole frame away from the brushless motor.
[0010] Furthermore, the drainage component includes a positioning frame, a fan blade is fixedly connected to the surface of the positioning frame, a connecting plate is fixedly connected to the surface of the positioning frame, an end of the connecting plate away from the positioning frame is fixedly connected to a limiting frame, and an inner wall of the circular hole frame is fixedly connected to a linkage block.
[0011] Furthermore, the inner wall of the positioning frame contacts the surface of the threaded rod, and the end of the limit frame away from the connecting plate contacts the surface of the linkage block. Four connecting plates are arranged on the surface of the positioning frame, and the four connecting plates are arranged in a circle with the positioning frame as the center. The positioning frame is arranged inside the circular hole frame.
[0012] Furthermore, the dredging component includes a screw hole ring, which is threadedly connected to the surface of the threaded rod, an extension rod is fixedly connected to the surface of the screw hole ring, and a triangular plate is fixedly connected to one end of the extension rod away from the screw hole ring, and a through hole is opened on the surface of the triangular plate.
[0013] Furthermore, the end of the screw hole ring contacts the end of the contact ring, the end of the triangular plate away from the extension rod contacts the end of the circular hole frame, and the screw hole ring is arranged at the outer end of the circular hole frame.
[0014] The present invention has the following beneficial effects:
[0015] The present invention fixes the tire of the lawn mower through the wheel hub, and uses the threaded rod to fix the brushless motor at the moving position of the lawn mower. After the brushless motor is started, the brushless motor can drive the tire to rotate through the wheel hub. After the bent rod is inserted into the inside of the round hole rod, the round hole frame is fixed by the bent rod. At this time, the round hole frame can be sleeved on the surface of the brushless motor to prevent grass leaves generated when the lawn mower is working from accumulating at the heat dissipation holes of the brushless motor. The plug block is inserted into the inside of the jack block, and the plug block uses the elasticity of the spring sheet to squeeze the inner wall of the jack block, so that the bent rod is fixed inside the round hole rod to limit the round hole frame by using the plug block. A plurality of round holes are arranged on the surface of the round hole frame, so that the heat generated by the brushless motor can be quickly discharged, and at the same time, the heat dissipation holes can be prevented from being blocked by grass leaves.
[0016] When the wheel hub of the present invention rotates, the circular hole frame is driven to rotate through the bent rod. When the circular hole frame rotates, the positioning frame is driven to rotate inside the circular hole frame through the plugging of the linkage block and the limit frame. When the positioning frame rotates, the fan blades are driven to rotate and generate airflow. The airflow generated by the fan blades will flow toward the outer end of the circular hole frame, and at the same time guide the hot air in the brushless motor to flow outward, thereby improving the heat dissipation efficiency of the brushless motor and preventing the heat generated by the brushless motor from accumulating inside the brushless motor and causing overheating of the brushless motor.
[0017] The screw hole ring of the present invention is threadedly connected to the surface of the threaded rod, so that the triangular plate is fixed by using the extension rod. When the circular hole frame rotates with the wheel hub, the grass leaves on the surface of the circular hole frame will be cleaned by the triangular plate, so as to avoid the grass leaves accumulating on the surface of the circular hole frame and affecting the heat dissipation of the brushless motor. The triangular plate is triangular, and the tip of the triangular plate will contact the surface of the circular hole frame. When the grass leaves are wrapped around the surface of the circular hole frame, the triangular plate can cut off the grass leaves on the surface of the circular hole frame, so as to further improve the heat dissipation effect of the circular hole frame.
[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.
[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0021] Figure 2 It is a schematic diagram of the structure of the brushless motor of the present invention;
[0022] Figure 3 This is a schematic diagram of the overall structure of the protective component of the present invention;
[0023] Figure 4 For the present invention Figure 3 A magnified schematic diagram of part A in FIG.
[0024] Figure 5 This is a schematic diagram of the overall structure of the drainage component of the present invention;
[0025] Figure 6 It is a schematic diagram of the structure of the linkage block of the present invention;
[0026] Figure 7 It is a schematic diagram of the overall structure of the dredging component of the present invention.
[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0028] In the figure: 1. wheel hub; 2. threaded rod; 3. brushless motor; 4. heat dissipation hole; 5. protective component; 6. drainage component; 7. dredging component; 10. round hole frame; 11. contact ring; 12. bent rod; 13. round hole rod; 14. spring; 15. plug block; 16. socket block; 20. positioning frame; 21. fan blade; 22. connecting plate; 23. limit frame; 24. linkage block; 30. screw hole ring; 31. extension rod; 32. triangle plate; 33. through hole. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0030] See also Figure 1-Figure 7 As shown, the present invention is a brushless hub motor for an energy-saving lawn mower, comprising a brushless motor 3, a heat dissipation hole 4 is provided at the end of the brushless motor 3, a hub 1 is fixedly connected to the surface of the brushless motor 3, a threaded rod 2 is fixedly connected to the end of the brushless motor 3, a protective component 5 is provided at the end of the brushless motor 3, a drainage component 6 is provided inside the protective component 5, and a dredging component 7 is provided at one end of the protective component 5 away from the brushless motor 3;
[0031] The protective component 5 includes a round hole frame 10, a curved rod 12 is fixedly connected to the surface of the round hole frame 10, a jack block 16 is fixedly connected to the surface of the curved rod 12, a round hole rod 13 is fixedly connected to the surface of the wheel hub 1, and a spring 14 is fixedly connected to the surface of the round hole rod 13. The present invention fixes the tire of the lawn mower through the wheel hub 1, and fixes the brushless motor 3 at the moving position of the lawn mower by using the threaded rod 2. After the brushless motor 3 is started, the brushless motor 3 can drive the tire to rotate through the wheel hub 1. After the curved rod 12 is inserted into the inside of the round hole rod 13, the round hole frame 10 is fixed by using the curved rod 12. At this time, the round hole frame 10 can be sleeved on the brushless motor The surface of the circular hole frame 10 is provided with a plurality of circular holes, so that the heat generated by the brushless motor 3 can be quickly discharged, and at the same time, the grass leaves can be prevented from clogging the heat dissipation holes 4 when the lawn mower is working. The plug block 15 is inserted into the interior of the jack block 16, and the plug block 15 uses the elasticity of the spring piece 14 to squeeze the inner wall of the jack block 16, so that the bending rod 12 is fixed to the interior of the circular hole rod 13 by the plug block 15 to limit the circular hole frame 10. A plurality of circular holes are provided on the surface of the circular hole frame 10, so that the heat generated by the brushless motor 3 can be quickly discharged, and at the same time, the grass leaves can be prevented from blocking the heat dissipation holes 4. The end of the spring piece 14 away from the circular hole rod 13 is fixedly connected with the plug block 15, and the surface of the circular hole frame 10 is rotatably connected with the contact ring 11.
[0032] There are two threaded rods 2, which are symmetrically arranged with the brushless motor 3 as the center. The inner wall of the circular hole frame 10 contacts the surface of the brushless motor 3. There are two circular hole frames 10, and one end of the two threaded rods 2 away from the brushless motor 3 passes through the circular hole frame 10 and extends to the outer end of the circular hole frame 10.
[0033] One end of the bent rod 12 away from the round hole frame 10 contacts the inner wall of the round hole rod 13 , one end of the plug block 15 away from the spring sheet 14 contacts the inner wall of the jack block 16 , and the contact ring 11 is arranged at one end of the round hole frame 10 away from the brushless motor 3 .
[0034] The drainage component 6 includes a positioning frame 20, a fan blade 21 is fixedly connected to the surface of the positioning frame 20, a connecting plate 22 is fixedly connected to the surface of the positioning frame 20, an end of the connecting plate 22 away from the positioning frame 20 is fixedly connected to a limiting frame 23, and an inner wall of the circular hole frame 10 is fixedly connected to a linkage block 24.
[0035] The inner wall of the positioning frame 20 contacts the surface of the threaded rod 2, and the end of the limiting frame 23 away from the connecting plate 22 contacts the surface of the linkage block 24. When the wheel hub 1 of the present invention rotates, the circular hole frame 10 is driven to rotate through the bent rod 12. When the circular hole frame 10 rotates, the positioning frame 20 is driven to rotate inside the circular hole frame 10 through the insertion of the linkage block 24 and the limiting frame 23. When the positioning frame 20 rotates, it drives the fan blades 21 to rotate and generate airflow. The airflow generated by the fan blades 21 will flow toward the outer end of the circular hole frame 10, and guide the hot air in the brushless motor 3 to flow outward while flowing, thereby improving the heat dissipation efficiency of the brushless motor 3, and avoiding the heat generated by the brushless motor 3 from accumulating inside the brushless motor 3 to cause overheating of the brushless motor 3. Four connecting plates 22 are arranged on the surface of the positioning frame 20, and the four connecting plates 22 are arranged around the positioning frame 20 as the center circle, and the positioning frame 20 is arranged inside the circular hole frame 10.
[0036] The dredging component 7 includes a screw hole ring 30, which is threadedly connected to the surface of the threaded rod 2. The surface of the screw hole ring 30 is fixedly connected to an extension rod 31, and one end of the extension rod 31 away from the screw hole ring 30 is fixedly connected to a triangular plate 32. The screw hole ring 30 of the present invention is threadedly connected to the surface of the threaded rod 2, so that the triangular plate 32 is fixed by the extension rod 31. When the circular hole frame 10 rotates with the wheel hub 1, the grass blades on the surface of the circular hole frame 10 will be cleaned by the triangular plate 32 to prevent the grass blades from accumulating on the surface of the circular hole frame 10 and affecting the heat dissipation of the brushless motor 3. The triangular plate 32 is triangular, and the tip of the triangular plate 32 will contact the surface of the circular hole frame 10. When the grass blades are wrapped around the surface of the circular hole frame 10, the triangular plate 32 can cut off the grass blades on the surface of the circular hole frame 10, thereby further improving the heat dissipation effect of the circular hole frame 10. A through hole 33 is provided on the surface of the triangular plate 32.
[0037] The end of the screw hole ring 30 contacts the end of the contact ring 11 , and one end of the triangular plate 32 away from the extension rod 31 contacts the end of the circular hole frame 10 . The screw hole ring 30 is arranged at the outer end of the circular hole frame 10 .
[0038] When in use, the tire of the lawn mower is fixed by the wheel hub 1, and the brushless motor 3 is fixed to the moving part of the lawn mower by the threaded rod 2. After the brushless motor 3 is started, the brushless motor 3 can drive the tire to rotate through the wheel hub 1. After the bent rod 12 is inserted into the inside of the round hole rod 13, the round hole frame 10 is fixed by the bent rod 12. At this time, the round hole frame 10 can be sleeved on the surface of the brushless motor to prevent the grass leaves generated when the lawn mower is working from accumulating at the heat dissipation holes 4 of the brushless motor 3. The plug block 15 is inserted into the plug block 16, the insert block 15 uses the elasticity of the spring sheet 14 to squeeze the inner wall of the insert block 16, so that the insert block 15 fixes the bent rod 12 inside the round hole rod 13 to limit the round hole frame 10. The surface of the round hole frame 10 is provided with a plurality of round holes, so that the heat generated by the brushless motor 3 can be quickly discharged, and at the same time, the grass leaves can be prevented from blocking the heat dissipation holes 4. When the wheel hub 1 rotates, the round hole frame 10 is driven to rotate through the bent rod 12. When the round hole frame 10 rotates, it is connected to the limiting frame 23 through the linkage block 24. The plug-in connection drives the positioning frame 20 to rotate inside the circular hole frame 10. When the positioning frame 20 rotates, it drives the fan blades 21 to rotate and generate airflow. The airflow generated by the fan blades 21 will flow to the outer end of the circular hole frame 10, and guide the hot air in the brushless motor 3 to flow outward while flowing, thereby improving the heat dissipation efficiency of the brushless motor 3 and avoiding the heat generated by the brushless motor 3 from accumulating inside the brushless motor 3 to cause the brushless motor 3 to overheat. The screw hole ring 30 is threadedly connected to the surface of the threaded rod 2, so as to utilize the extended The extension rod 31 fixes the triangular plate 32. When the circular hole frame 10 rotates with the wheel hub 1, the grass leaves on the surface of the circular hole frame 10 will be cleaned by the triangular plate 32 to prevent the grass leaves from accumulating on the surface of the circular hole frame 10 and affecting the heat dissipation of the brushless motor 3. The triangular plate 32 is triangular, and the tip of the triangular plate 32 will contact the surface of the circular hole frame 10. When the grass leaves are entangled on the surface of the circular hole frame 10, the triangular plate 32 can cut off the grass leaves on the surface of the circular hole frame 10, thereby further improving the heat dissipation effect of the circular hole frame 10.
[0039] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.
Claims
1. A brushless hub motor for an energy-saving lawn mower, comprising a brushless motor (3), It is characterized in that The end of the brushless motor (3) is provided with a heat dissipation hole (4), the surface of the brushless motor (3) is fixedly connected to a wheel hub (1), the end of the brushless motor (3) is fixedly connected to a threaded rod (2), the end of the brushless motor (3) is provided with a protective component (5), a drainage component (6) is provided inside the protective component (5), and a dredging component (7) is provided at one end of the protective component (5) away from the brushless motor (3); The protective component (5) comprises a round hole frame (10), a curved rod (12) is fixedly connected to the surface of the round hole frame (10), a plug block (16) is fixedly connected to the surface of the curved rod (12), a round hole rod (13) is fixedly connected to the surface of the wheel hub (1), a spring sheet (14) is fixedly connected to the surface of the round hole rod (13), an end of the spring sheet (14) away from the round hole rod (13) is fixedly connected to the plug block (15), and a contact ring (11) is rotatably connected to the surface of the round hole frame (10); The drainage component (6) comprises a positioning frame (20), a fan blade (21) is fixedly connected to the surface of the positioning frame (20), a connecting plate (22) is fixedly connected to the surface of the positioning frame (20), an end of the connecting plate (22) away from the positioning frame (20) is fixedly connected to a limiting frame (23), and an inner wall of the circular hole frame (10) is fixedly connected to a linkage block (24); The inner wall of the positioning frame (20) contacts the surface of the threaded rod (2), and one end of the limiting frame (23) away from the connecting plate (22) contacts the surface of the linkage block (24). Four connecting plates (22) are arranged on the surface of the positioning frame (20), and the four connecting plates (22) are arranged around the positioning frame (20) as the center circle. The positioning frame (20) is arranged inside the circular hole frame (10); The dredging component (7) comprises a screw hole ring (30), the screw hole ring (30) being threadedly connected to the surface of the threaded rod (2), an extension rod (31) being fixedly connected to the surface of the screw hole ring (30), an end of the extension rod (31) away from the screw hole ring (30) being fixedly connected to a triangular plate (32), and a through hole (33) being provided on the surface of the triangular plate (32); The end of the screw hole ring (30) contacts the end of the contact ring (11), the end of the triangular plate (32) away from the extension rod (31) contacts the end of the circular hole frame (10), and the screw hole ring (30) is arranged at the outer end of the circular hole frame (10).
2. A brushless hub motor for an energy-saving lawn mower according to claim 1, Features: The number of the threaded rods (2) is two, and the two threaded rods (2) are symmetrically arranged with the brushless motor (3) as the center. The inner wall of the circular hole frame (10) contacts the surface of the brushless motor (3). The number of the circular hole frames (10) is two, and one end of the two threaded rods (2) away from the brushless motor (3) passes through the circular hole frame (10) and extends to the outer end of the circular hole frame (10).
3. A brushless hub motor for an energy-saving lawn mower according to claim 2, Features: One end of the bent rod (12) away from the circular hole frame (10) contacts the inner wall of the circular hole rod (13), one end of the plug block (15) away from the spring sheet (14) contacts the inner wall of the plug block (16), and the contact ring (11) is arranged at one end of the circular hole frame (10) away from the brushless motor (3).