Wheel hub motor direct-driven electric bicycle driving assembly

Abstract

The utility model provides a hub motor direct-drive electric bicycle driving assembly which comprises an outer frame, a motor body is arranged in the outer frame, a supporting rod is fixedly connected to the outer side of the outer frame, a protection frame is fixedly connected to the supporting rod, a plurality of heat dissipation pipes are fixedly connected to the outer side of the outer frame, and the heat dissipation pipes are fixedly connected to the outer side of the outer frame. And the end part of the radiating pipe is fixedly connected with an expansion pipe which is vertically arranged and is wide at the lower part and narrow at the upper part. Compared with the prior art, the heat dissipation device has the advantages that by arranging the heat dissipation pipe, the expansion pipe, the supporting net and other structures, when the motor body drives the electric bicycle to move, external airflow drives the impeller to rotate, the impeller disturbs air flow at the position of the expansion pipe, hot air in the outer frame is promoted to flow outwards, and then heat dissipation of the motor body can be achieved. When external water enters the expansion pipe, the floating ball moves upwards under the action of buoyancy to plug the expansion pipe, and the external water is prevented from entering the outer frame. Heat of the motor body can be dissipated outwards along with movement of the electric bicycle, and long-term use of the motor body is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of bicycle drive component technology, and in particular to a hub motor direct drive electric bicycle drive component. Background Technology

[0002] A hub motor is a type of motor that integrates the power system, transmission system, and braking system into one unit, primarily used for driving electric vehicles. Its most significant feature is that the power unit, transmission unit, and braking unit are all integrated into the wheel hub, thus greatly simplifying the mechanical components of the electric vehicle.

[0003] Because hub motors are installed at the wheels of electric bicycles, they operate in harsh environments, exposed to water, dust, and other factors. Therefore, hub motors generally employ a closed structure. However, with a closed structure, the heat generated by the hub motor is difficult to dissipate, limiting its heat dissipation performance. Under high-power operation, this can easily lead to excessive heat generation, affecting the motor's lifespan. To address this, a hub motor direct-drive electric bicycle drive assembly is proposed as an improvement. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to provide a hub motor direct drive electric bicycle drive assembly to solve the problems mentioned in the background art and overcome the shortcomings of the prior art.

[0006] To achieve the above objectives, one embodiment of this utility model provides a hub motor direct-drive electric bicycle drive assembly, including an outer frame, a motor body disposed within the outer frame, a support rod fixedly connected to the outer side of the outer frame, a protective frame fixedly connected to the support rod, a plurality of heat dissipation pipes fixedly connected to the outer side of the outer frame, an expansion tube fixedly connected to the end of each heat dissipation pipe (vertically oriented, wider at the bottom and narrower at the top), a support mesh disposed within the expansion tube, and a float ball disposed on the support mesh to seal the expansion tube; a plurality of rotating rods fixedly connected to the outer frame, and an impeller rotatably connected to each rotating rod.

[0007] Preferably, of any of the above solutions, the outer frame is fixedly connected with several reinforcing ribs, and the outer frame is evenly provided with several connectors around its circumference.

[0008] The above technical solution provides a mounting platform for the hub motor and protects it from damage caused by accidental contact with external objects. Reinforcing ribs are added to the outer frame to improve its strength. Connectors are provided on the outer frame for easy installation on the electric bicycle.

[0009] Preferably, in any of the above schemes, there are several support rods, and the several support rods are evenly arranged circumferentially on the outer frame.

[0010] The above technical solution involves installing support rods on the outer frame to provide support for the protective frame. Several support rods are evenly distributed circumferentially on the outer frame, which helps ensure the stability of the protective frame. The protective frame can protect the heat dissipation pipes, rotating rods, and impellers from the outside, preventing external objects from colliding with these structures and ensuring their stable operation.

[0011] Preferably, in any of the above embodiments, the protective frame includes two inner and outer circular frames and several horizontal bars fixedly connected between the two circular frames.

[0012] The above technical solution, which includes an inner and outer circular frame and several crossbars, can block external objects without affecting the flow of gas inside and outside the protective frame, thus ensuring the stable operation of structures such as impellers and heat dissipation pipes.

[0013] Preferably, in any of the above schemes, a plurality of heat dissipation pipes are evenly arranged circumferentially on the outer frame, and the expansion pipe adopts a tapered structure.

[0014] The above technical solution allows heat to dissipate from the outer frame through heat pipes, thus achieving heat dissipation for the motor body and benefiting its long-term use. Several heat pipes are evenly arranged circumferentially to facilitate heat dissipation from all parts of the outer frame. Expansion tubes are installed at the ends of the heat pipes, providing space for the float to move. These expansion tubes have a conical structure to facilitate the float's movement within them.

[0015] Preferably, in any of the above schemes, the support mesh is located at the bottom end of the expansion tube, and several heat dissipation tubes are arranged at intervals between the reinforcing ribs on the outer frame.

[0016] The above technical solution employs a support net to support the buoy, preventing it from detaching from the expansion tube. The support net also prevents external objects from entering and clogging the expansion tube. With the buoy on the support net, when external water enters the expansion tube, the buoy moves upward under buoyancy, sealing the expansion tube and preventing external water from entering the outer frame.

[0017] Preferably, in any of the above solutions, the number of rotating rods is the same as the number of heat dissipation pipes, and the rotating rods are located on the lower side of the heat dissipation pipes.

[0018] The above technical solution is adopted: the rotating rod provides an installation platform for the impeller, which can be driven to rotate by the airflow when the electric bicycle is moving, thereby promoting the gas flow at the expansion tube, so that the heat inside the outer frame flows outward, thereby realizing the heat dissipation of the motor body.

[0019] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0020] 1. This hub motor direct-drive electric bicycle drive assembly, through the inclusion of heat dissipation pipes, expansion pipes, support nets, floats, rotating rods, and impellers, utilizes a structure where, as the motor moves the electric bicycle, external airflow drives the impeller to rotate. The impeller then disturbs the airflow at the expansion pipes, causing hot air inside the outer frame to flow outwards, thus achieving heat dissipation for the motor. When external water enters the expansion pipes, the floats rise under buoyancy, sealing the expansion pipes and preventing water from entering the outer frame. The heat from the motor can dissipate outwards as the electric bicycle moves, which is beneficial for the long-term use of the motor.

[0021] 2. This hub motor direct-drive electric bicycle drive assembly features a protective frame that provides external protection for the heat dissipation pipes, rotating rod, and impeller. The protective frame, including inner and outer circular frames and several crossbars, can block external objects from colliding with the impeller, heat dissipation pipes, and other structures without affecting the airflow inside and outside the frame, ensuring their stable operation. Several heat dissipation pipes are evenly arranged circumferentially to facilitate heat dissipation from various parts of the outer frame. A support net provides support for the float, preventing it from detaching from the expansion tube. The support net also prevents external objects from entering and clogging the expansion tube.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1 This is a first-view structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the second-view structure of the present invention;

[0026] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0027] Figure 4 For the present utility model Figure 3 A schematic diagram of the structure at point A in the middle.

[0028] In the diagram: 1-Outer frame, 2-Motor body, 3-Support rod, 4-Protective frame, 5-Heat pipe, 6-Extension pipe, 7-Support net, 8-Float ball, 9-Rotating rod, 10-Impeller. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] like Figures 1-4 As shown, this utility model includes an outer frame 1, a motor body 2 is disposed inside the outer frame 1, a support rod 3 is fixedly connected to the outside of the outer frame 1, a protective frame 4 is fixedly connected to the support rod 3, a plurality of heat dissipation pipes 5 are fixedly connected to the outside of the outer frame 1, and a vertically arranged expansion pipe 6 that is wider at the bottom and narrower at the top is fixedly connected to the end of the heat dissipation pipe 5. A support net 7 is disposed inside the expansion pipe 6, and a float ball 8 that can block the expansion pipe 6 is disposed on the support net 7; a plurality of rotating rods 9 are fixedly connected to the outer frame 1, and an impeller 10 is rotatably connected to the rotating rods 9.

[0032] Example 1: Several reinforcing ribs are fixedly connected to the outer frame 1, and several connectors are evenly arranged around the circumference of the outer frame 1. The outer frame 1 provides a mounting platform for the hub motor and protects it from damage caused by accidental contact with external objects. The reinforcing ribs on the outer frame 1 help improve its strength. The connectors on the outer frame 1 facilitate its installation on the electric bicycle.

[0033] Several support rods 3 are evenly distributed circumferentially on the outer frame 1. These support rods 3, mounted on the outer frame 1, provide support for the protective frame 4. The even distribution of these support rods 3 on the outer frame 1 helps ensure the stability of the protective frame 4. The protective frame 4 provides external protection for the heat dissipation pipe 5, rotating rod 9, and impeller 10, preventing external objects from colliding with these structures and ensuring their stable operation.

[0034] Example 2: The protective frame 4 includes two circular frames, an inner one and an outer one, and several crossbars fixedly connected between the two circular frames. The protective frame 4, including the inner and outer circular frames and several crossbars, can block external objects without affecting the gas flow inside and outside the protective frame 4, ensuring the stable operation of structures such as the impeller 10 and the heat dissipation pipe 5.

[0035] Several heat dissipation pipes 5 are evenly arranged circumferentially on the outer frame 1, and the expansion pipes 6 adopt a conical structure. The heat dissipation pipes 5 allow heat inside the outer frame 1 to dissipate outwards, thus achieving heat dissipation for the motor body 2 and benefiting the long-term use of the motor body 2. The even circumferential arrangement of the heat dissipation pipes 5 facilitates the outward dissipation of heat from various parts inside the outer frame 1. An expansion pipe 6 is provided at the end of the heat dissipation pipe 5, providing space for the float 8 to move. It adopts a conical structure to facilitate the movement of the float 8 within it.

[0036] Example 3: A support net 7 is installed at the bottom of the expansion tube 6, and several heat dissipation pipes 5 are spaced apart between the reinforcing ribs on the outer frame 1. The support net 7 provides support for the float 8, preventing it from detaching from the expansion tube 6. The support net 7 also prevents external objects from entering the expansion tube 6 and clogging it. With the float 8 on the support net 7, when external water enters the expansion tube 6, the float 8 moves upward under the action of buoyancy, sealing the expansion tube 6 and preventing external water from entering the outer frame 1.

[0037] The number of rotating rods 9 is the same as the number of heat dissipation pipes 5, and the rotating rods 9 are located on the lower side of the heat dissipation pipes 5. The rotating rods 9 provide a mounting platform for the impeller 10, which can be rotated by the airflow when the electric bicycle is moving, thereby promoting the air flow at the expansion pipe 6, so that the heat inside the outer frame 1 can flow outward, thereby realizing the heat dissipation of the motor body 2.

[0038] The working principle of this utility model is as follows:

[0039] S1. The outer frame 1 is fixedly installed on the electric bicycle. When needed, the motor column 2 is started. When the motor body 2 moves the electric bicycle, the external airflow drives the impeller 10 to rotate. The impeller 10 then disturbs the airflow at the expansion tube 6, causing the hot air inside the outer frame 1 to flow outward, thereby achieving heat dissipation of the motor body 2.

[0040] S2. When the electric bicycle travels through a flooded section of road, external water flows towards the expansion pipe 6. After the external water enters the expansion pipe 6, the float 8 moves upward under the action of buoyancy, blocking the expansion pipe 6 and preventing external water from entering the outer frame 1, thereby avoiding the influence of external water on the motor body 2. When the electric bicycle is in motion, the protective frame 4 blocks external objects, preventing them from colliding with the heat dissipation pipe 5, expansion pipe 6, rotating rod 9, and impeller 10, ensuring their stable operation.

[0041] Compared with the prior art, the present invention has the following advantages:

[0042] 1. This hub motor direct-drive electric bicycle drive assembly, through the inclusion of a heat dissipation pipe 5, an expansion pipe 6, a support mesh 7, a float 8, a rotating rod 9, and an impeller 10, utilizes a structure where, when the motor body 2 moves the electric bicycle, external airflow drives the impeller 10 to rotate. The impeller 10 then disturbs the airflow at the expansion pipe 6, causing hot air inside the outer frame 1 to flow outwards, thus achieving heat dissipation for the motor body 2. When external water enters the expansion pipe 6, the float 8 moves upwards under buoyancy, sealing the expansion pipe 6 and preventing external water from entering the outer frame 1. The heat from the motor body 2 can dissipate outwards as the electric bicycle moves, which is beneficial for the long-term use of the motor body 2.

[0043] 2. This hub motor direct-drive electric bicycle drive assembly features a protective frame 4 that provides external protection for the heat dissipation pipe 5, rotating rod 9, and impeller 10. The protective frame 4, including inner and outer circular frames and several crossbars, can block external objects from colliding with the impeller 10, heat dissipation pipe 5, and other structures without affecting the airflow inside and outside the frame, ensuring their stable operation. Several heat dissipation pipes 5 are evenly arranged circumferentially to facilitate heat dissipation from various parts of the outer frame 1. The support net 7 provides support for the float 8, preventing it from detaching from the expansion tube 6. The support net 7 also prevents external objects from entering the expansion tube 6 and clogging it.

Claims

1. A hub motor direct-drive electric bicycle drive assembly, comprising an outer frame (1), wherein a motor body (2) is disposed within the outer frame (1); characterized in that, A support rod (3) is fixedly connected to the outside of the outer frame (1), and a protective frame (4) is fixedly connected to the support rod (3). Several heat dissipation pipes (5) are fixedly connected to the outside of the outer frame (1). A vertically arranged expansion pipe (6) that is wider at the bottom and narrower at the top is fixedly connected to the end of the heat dissipation pipe (5). A support net (7) is provided inside the expansion pipe (6), and a float ball (8) that can block the expansion pipe (6) is provided on the support net (7). A plurality of rotating rods (9) are fixedly connected to the outer frame (1), and an impeller (10) is rotatably connected to the rotating rods (9).

2. The hub motor direct-drive electric bicycle drive assembly as described in claim 1, characterized in that: The outer frame (1) is fixedly connected with several reinforcing ribs, and several connectors are evenly arranged around the circumference of the outer frame (1).

3. The hub motor direct drive electric bicycle drive assembly as described in claim 2, characterized in that: There are several support rods (3), and the several support rods (3) are evenly arranged on the outer frame (1) around the circumference.

4. The hub motor direct drive electric bicycle drive assembly as described in claim 3, characterized in that: The protective frame (4) includes two inner and outer circular frames and several horizontal bars fixedly connected between the two circular frames.

5. The hub motor direct drive electric bicycle drive assembly as described in claim 4, characterized in that: Several heat dissipation pipes (5) are evenly arranged on the outer frame (1) around the circumference, and the expansion pipe (6) adopts a conical structure.

6. The hub motor direct drive electric bicycle drive assembly as described in claim 2, characterized in that: The support mesh (7) is set at the bottom end of the expansion tube (6), and several heat dissipation tubes (5) are arranged at intervals between the reinforcing ribs on the outer frame (1).

7. The hub motor direct-drive electric bicycle drive assembly as described in claim 6, characterized in that: The number of rotating rods (9) is the same as the number of heat sinks (5), and the rotating rods (9) are located on the lower side of the heat sinks (5).

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