High-efficiency heat dissipation electric scooter hub structure

Abstract

The utility model discloses a kind of high-efficiency heat dissipation electric skateboard wheel hub structure, including drive box, transmission box, drive wheel group and liquid cooling heat dissipation group. The drive wheel group is installed in drive box inside, drive wheel group includes motor, bearing ring and wheel cover, the output end of motor is engaged with transmission gear set in transmission box, the output end of transmission gear set is engaged with the gear ring on wheel cover, to drive wheel cover rotation. The motor outer sleeve is connected with axial fan blade, the side wall of drive box is provided with air inlet window, when motor operation, air current enters drive box and is discharged by bottom end, forms air curtain to prevent dust from entering. The liquid cooling heat dissipation group includes heat pipe and fin seat, wherein one end of heat pipe is fixed to motor surface, heat is conducted to fin seat, and heat dissipation is realized by air convection. The utility model can realize motor high-efficiency drive while improving heat dissipation performance, guarantee the stability and durability of wheel hub.

Description

Technical Field

[0001] This utility model relates to the field of skateboard wheel hub technology, specifically to a high-efficiency heat dissipation electric skateboard wheel hub structure. Background Technology

[0002] Currently, electric scooters are widely used in urban short-distance travel and shared mobility as a lightweight personal transportation tool. The drive system of electric scooters typically integrates the motor directly with the wheel hub to reduce the overall structural size. However, the motor generates a significant amount of heat during prolonged operation. If heat dissipation is inadequate, it can not only lead to decreased motor efficiency but also cause overheating and burnout, severely impacting the lifespan and safety of the electric scooter.

[0003] In existing technologies, most common electric skateboard wheel hub structures employ the following heat dissipation methods: Natural heat dissipation: Some electric scooters rely on the metal casing of the motor for heat conduction, and then dissipate heat through natural air convection. This method is simple in structure, but its heat dissipation efficiency is limited and it is difficult to cope with the high heat load of the motor running at high power for a long time.

[0004] Single-fan assisted cooling: Some motors have a small external fan installed to reduce temperature by forcing airflow. However, due to the lack of airflow guidance design, the airflow path is unstable, the cooling effect is limited, and dust is easily sucked in at the air inlet, leading to dust accumulation inside the motor and increasing maintenance difficulty.

[0005] Single liquid cooling method: Some high-end motors use heat pipes or water cooling to transfer heat to external heat sinks. However, such heat dissipation structures are usually separate from the wheel hub and are difficult to integrate tightly with the drive structure, which can easily lead to problems such as excessive size and complex structure.

[0006] Therefore, how to propose an electric skateboard wheel hub structure that combines efficient heat dissipation, dust protection, and integrated drive design has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0007] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0008] Therefore, the technical solution adopted by this utility model is as follows: a high-efficiency heat dissipation electric skateboard wheel hub structure, including a drive box, a transmission box, a drive wheel assembly, and a liquid cooling heat dissipation assembly; the drive wheel assembly is fixedly installed inside the drive box, and the drive wheel assembly includes a motor, a bearing ring, and a wheel sleeve, and the side wall of the drive box is provided with an air inlet window; one side of the drive box is connected to the transmission box, and the transmission box is provided with a transmission gear assembly, the output end of the motor meshes with the transmission gear assembly, and the output end of the transmission gear assembly meshes with the toothed ring of the wheel sleeve; the output end of the motor is provided with an axial flow fan blade, which is used to push airflow into the drive box when the motor is running; the liquid cooling heat dissipation assembly includes a heat pipe and a fin seat, both arranged on the surface of the drive box, wherein one end of the heat pipe is fixed to the surface of the motor, and is used to conduct the heat generated by the motor to the fin seat for heat dissipation.

[0009] In a preferred embodiment, the air inlet window is further configured to be located on the side wall of the drive housing, and the axial fan blades create airflow convection when the motor rotates, allowing external air to enter the inside of the drive housing through the air inlet window. Specifically, this structure can create a continuous airflow circulation around the motor, improving air cooling efficiency.

[0010] In a preferred embodiment, the drive box is further configured as a hub-shaped cover, with the bottom ends of the motor and wheel sleeve protruding from the bottom surface of the drive box. External air enters the inside of the drive box through the air inlet window and overflows from the bottom end of the drive box to form an air curtain structure. Specifically, this air curtain can effectively prevent dust raised by the rotation of the wheel from entering the interior of the drive box, ensuring the clean operation of the motor and transmission gear assembly.

[0011] In a preferred embodiment, the wheel sleeve is further configured such that it has an outer layer of rubber material and an inner layer of metal support, with the toothed ring fixedly embedded on one side of the metal support layer. Specifically, this composite structure ensures both the wear resistance and shock absorption of the wheel sleeve, as well as the stability and durability of the toothed ring meshing transmission.

[0012] In a preferred embodiment, the bearing ring is further configured to be fitted around the outer periphery of the motor to provide rotational support for the wheel hub on the motor surface. Specifically, this design can reduce operating friction and improve the stability and service life of the hub under high-speed rotation.

[0013] In a preferred embodiment, the heat pipes in the liquid cooling heat dissipation assembly are phase-change heat transfer elements, capable of rapidly transferring the heat generated during motor operation to the finned seat, and then dissipating heat through convection between the finned seat and external air. Specifically, this composite cooling method can significantly reduce motor temperature rise and ensure reliability during long-term operation.

[0014] In a preferred embodiment, the finned seats are further configured such that they are evenly distributed along the outer wall of the drive housing, and the fins are arranged in a parallel plate-like pattern. Specifically, this arrangement can significantly increase the heat dissipation area, improve the air convection heat transfer efficiency, and further enhance the overall heat dissipation performance of the motor.

[0015] In a preferred embodiment, the output end of the motor and the input end of the transmission gear set are configured with a direct gear meshing structure, and the output end of the transmission gear set drives the gear sleeve to rotate via a gear ring. Specifically, this transmission path is short, energy loss is low, and it can improve power transmission efficiency and drive stability.

[0016] The beneficial effects achieved by this utility model are as follows: 1. In this utility model, by setting a motor, axial fan blades, air inlet window and air curtain structure at the bottom of the wheel sleeve in the drive box, the motor can form forced air convection cooling during operation, which not only significantly improves the heat dissipation efficiency of the motor, but also forms an air curtain barrier at the bottom of the drive box during air flow, effectively preventing external dust from entering the interior with the rotation of the wheel body, thereby ensuring the cleanliness and stability of the motor's operating environment.

[0017] 2. In this utility model, the heat pipes and fin seats of the liquid cooling heat dissipation group can quickly conduct and efficiently dissipate the heat generated during motor operation, avoiding the overheating problem of the motor running at high power for a long time; at the same time, combined with the supporting role of the bearing ring on the wheel sleeve, the optimized design of integrated drive and heat dissipation is realized, thereby improving the durability of the wheel hub structure of the electric skateboard and the safety and reliability of the whole vehicle. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model; Figure 2 This is a schematic diagram of the drive box and drive wheel assembly structure according to an embodiment of the present invention; Figure 3 This is an exploded view of the drive wheel assembly according to an embodiment of the present invention; Figure 4 This is a schematic diagram of a motor and its surface bearing ring structure according to an embodiment of the present invention.

[0019] Figure label: 100. Drive unit; 110. Transmission unit; 120. Transmission gear set; 130. Axial flow fan blade; 111. Air inlet window; 200. Drive wheel assembly; 210. Motor; 220. Wheel sleeve; 230. Bearing ring; 221. Gear ring; 300. Liquid cooling heat dissipation unit; 310. Heat pipe; 320. Fin seat. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0021] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0022] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a high-efficiency heat dissipation electric skateboard wheel hub structure.

[0023] Combination Figures 1-4 As shown, the present invention provides a high-efficiency heat dissipation electric skateboard wheel hub structure, including a drive box 100, a transmission box 110, a drive wheel assembly 200, and a liquid cooling heat dissipation assembly 300.

[0024] The drive wheel assembly 200 is fixedly installed inside the drive box 100. The drive wheel assembly 200 includes a motor 210, a bearing ring 230 sleeved on the outside of the motor 210, and a wheel sleeve 220. The side wall of the drive box 100 is provided with an air inlet window 111 for the entry of external air.

[0025] A transmission box 110 is provided on one side of the drive box 100, and a transmission gear set 120 is provided on the inner side of the transmission box 110. The output end of the motor 210 meshes with the transmission gear set 120 for transmission, and the output end of the transmission gear set 120 meshes with a gear ring 221 fixed on one side of the wheel sleeve 220, thereby driving the wheel sleeve 220 to rotate. An axial flow fan blade 130 is sleeved on the outer peripheral output end of the motor 210, which can push the airflow through the air inlet window 111 into the drive box 100 when the motor 210 is running, thereby achieving air cooling.

[0026] The liquid cooling heat dissipation assembly 300 includes a heat pipe 310 and a finned holder 320. Both the heat pipe 310 and the finned holder 320 are arranged on the surface of the drive box 100. One end of the heat pipe 310 is fixed to the surface of the motor 210, used to conduct the heat generated by the motor 210 during operation to the finned holder 320, and then dissipate the heat through the finned holder 320. This structure forms a composite cooling mode combining air cooling and liquid cooling.

[0027] In this embodiment, the air inlet window 111 is located on the side wall of the drive box 100. When the motor 210 rotates, the axial fan blades 130 generate axial airflow, allowing external air to enter the inside of the drive box 100 through the air inlet window 111, thereby providing forced convection cooling for the motor 210. This design effectively enhances airflow and improves heat dissipation efficiency.

[0028] In this embodiment, the drive box 100 is shaped like a hub cover, with the bottom ends of the motor 210 and the wheel sleeve 220 protruding from the bottom surface of the drive box 100. External air enters the inside of the drive box 100 under the guidance of the air inlet window 111 and overflows from the bottom end of the drive box 100, forming an air curtain structure. The air curtain can effectively prevent dust generated by the rotation of the wheel from entering the interior, ensuring the cleanliness and stability of the motor 210 and the transmission gear set 120.

[0029] In this embodiment, the wheel sleeve 220 adopts an outer rubber material structure to ensure friction performance and shock absorption performance with the ground, and its inner layer is a metal support layer to improve load-bearing capacity. The toothed ring 221 is fixedly embedded on one side of the metal support layer to ensure the stability and wear resistance of gear meshing.

[0030] In this embodiment, the bearing ring 230 is sleeved on the outer periphery of the motor 210 to provide rotational support for the wheel sleeve 220 on the surface of the motor 210, reduce friction during operation, and ensure the stability and durability of the wheel hub under high-speed operation.

[0031] In this embodiment, the heat pipe 310 in the liquid cooling heat dissipation assembly 300 is a phase change heat transfer element. When the motor 210 is running, it generates heat. The heat pipe 310 quickly transfers the heat to the fin seat 320 through the vaporization and condensation cycle of the working fluid. The fin seat 320 then dissipates the heat through convection with the external air, ensuring that the temperature of the motor 210 remains within a stable range.

[0032] In this embodiment, the fin seat 320 is evenly distributed along the outer wall of the drive box 100, and the fins are arranged in parallel plates, which can significantly increase the heat dissipation area, improve the air convection heat transfer efficiency, and thus enhance the overall heat dissipation effect.

[0033] In this embodiment, the output end of the motor 210 and the input end of the transmission gear set 120 adopt a direct gear meshing structure. The output end of the transmission gear set 120 then drives the wheel sleeve 220 to rotate through the gear ring 221, thereby driving the electric scooter. This design reduces energy loss and ensures transmission efficiency.

[0034] Working principle and usage process of this utility model: This utility model's high-efficiency heat-dissipating electric skateboard wheel hub structure, through the coordinated operation of the drive box 100, transmission box 110, drive wheel assembly 200, and liquid cooling heat dissipation assembly 300, achieves both high-efficiency motor drive and combined heat dissipation functions. Its working principle is as follows: The drive wheel assembly 200 is installed inside the drive housing 100. The drive wheel assembly 200 includes a motor 210, a bearing ring 230, and a wheel sleeve 220. The output end of the motor 210 meshes with the transmission gear set 120 inside the transmission housing 110. The output end of the transmission gear set 120 then meshes with the toothed ring 221 on the wheel sleeve 220, thereby driving the wheel sleeve 220 to rotate and thus propelling the electric scooter. The bearing ring 230 is fitted around the outer circumference of the motor 210, providing support and limiting for the wheel sleeve 220, ensuring the stability and durability of the wheel hub during rotation.

[0035] An axial fan blade 130 is fixed to the outer peripheral output end of the motor 210. When the motor 210 is running, the axial fan blade 130 rotates accordingly, forming a forced airflow. External air enters the interior through the air inlet window 111 on the side wall of the drive box 100, passes around the motor 210, and overflows from the bottom of the drive box 100, forming an air curtain structure. This not only achieves air cooling of the motor but also prevents external dust from entering the interior with the rotation of the wheel, thereby improving the heat dissipation performance of the motor and the cleanliness of the working environment.

[0036] The liquid cooling heat dissipation assembly 300 includes a heat pipe 310 and a finned mount 320. One end of the heat pipe 310 is fixed to the surface of the motor 210, enabling it to quickly absorb and conduct the heat generated by the motor 210 during operation. The heat is transferred to the finned mount 320 via the heat pipe 310. The finned mount 320 is arranged on the surface of the drive box 100, and its parallel finned structure can significantly increase the heat dissipation area and achieve convective heat transfer through external airflow, thereby further reducing the temperature rise of the motor 210.

[0037] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A high-efficiency heat dissipation electric skateboard wheel hub structure, characterized in that, include: Drive box (100), transmission box (110), drive wheel assembly (200) and liquid cooling heat dissipation assembly (300); The drive wheel assembly (200) is fixedly installed on the inner side of the drive box (100). The drive wheel assembly (200) includes a motor (210) and a bearing ring (230) and a wheel sleeve (220) sleeved on the outside of the motor (210). An air inlet window (111) is opened on the side wall of the drive box (100). The drive box (100) has a transmission box (110) on one side, and a transmission gear set (120) is provided on the inner side of the transmission box (110). The transmission gear set (120) meshes with the output end of the motor (210) for transmission. A toothed ring (221) is fixedly provided on one side of the wheel sleeve (220). The toothed ring (221) meshes with the output end of the transmission gear set (120). An axial flow fan blade (130) is sleeved on the outer peripheral output end of the motor (210) to push the airflow into the drive box (100) when the motor is running. The liquid cooling heat dissipation group (300) includes a heat pipe (310) and a fin seat (320). The heat pipe (310) and the fin seat (320) are both arranged on the surface of the drive box (100). One end of the heat pipe (310) is fixed to the surface of the motor (210) for conducting and dissipating the heat generated during the operation of the motor (210).

2. The high-efficiency heat dissipation electric skateboard wheel hub structure according to claim 1, characterized in that, The air inlet window (111) is located on the side wall of the drive box (100). When the motor (210) rotates, the axial fan blade (130) forms airflow convection, allowing external air to enter the inside of the drive box (100) through the air inlet window (111).

3. The high-efficiency heat dissipation electric skateboard wheel hub structure according to claim 1, characterized in that, The drive box (100) is in the shape of a hub cover, and the bottom ends of the motor (210) and the wheel sleeve (220) protrude from the bottom surface of the drive box (100).

4. The high-efficiency heat dissipation electric skateboard wheel hub structure according to claim 1, characterized in that, The wheel sleeve (220) has an outer layer structure made of rubber and an inner layer made of metal support. The toothed ring (221) is fixedly embedded on one side of the metal support layer.

5. The high-efficiency heat dissipation electric skateboard wheel hub structure according to claim 1, characterized in that, The bearing ring (230) is fitted around the outer periphery of the motor (210).

6. The high-efficiency heat dissipation electric skateboard wheel hub structure according to claim 1, characterized in that, The heat pipe (310) in the liquid cooling heat dissipation group (300) is a phase change heat conduction element, which can quickly transfer the heat generated during the operation of the motor (210) to the fin seat (320), and realize air convection heat dissipation through the fin seat (320).

7. The high-efficiency heat dissipation electric skateboard wheel hub structure according to claim 1, characterized in that, The fin seats (320) are evenly distributed along the outer wall of the drive box (100), and the fins are arranged in parallel plates.

8. The high-efficiency heat dissipation electric skateboard wheel hub structure according to claim 1, characterized in that, The output end of the motor (210) and the input end of the transmission gear set (120) adopt a gear direct meshing structure. The output end of the transmission gear set (120) drives the wheel sleeve (220) to rotate through the gear ring (221).

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