Unilateral hub motor

Abstract

The unilateral hub motor comprises a motor body and a connecting arm, the connecting arm comprises an arm body and an arm head installed at the top of the arm body, a controller is installed in the connecting arm, a groove is formed in the side, close to the motor body, of the connecting arm, and a reinforcing plate is arranged in the groove in the length direction of the groove. A plurality of rows of flow guide reinforcing plates arranged in the width direction of the reinforcing plate are arranged on one side of the reinforcing plate, penetrating holes penetrating through the reinforcing plate are formed in the portion, between every two adjacent flow guide reinforcing plates, of the reinforcing plate, the penetrating holes are communicated with a flow guide channel, the connecting arm comprises a front side blocking edge and a rear side blocking edge, and the front side blocking edge and the rear side blocking edge are located on the two sides of the connecting arm respectively. A through strip-shaped side hole is formed in the front side blocking edge and communicated with the flow guide channel. Airflow formed through relative movement with the wheel penetrates through the side holes and moves to the whole groove through the flow guide channels and the penetrating holes formed between the two adjacent flow guide reinforcing plates, and heat of the connecting arm can be taken away easily.

Description

Technical Field

[0001] The invention relates to the field of single-sided wheel hub motors, and in particular to a single-sided wheel hub motor. Background Art

[0002] At present, the single-side hub motor is an electric vehicle driving technology that integrates the electric motor into the wheel and directly drives the wheel to rotate. This design eliminates the traditional mechanical transmission components such as the drive shaft, differential, and half shaft, making the power transmission more direct and efficient. The controller is the core component that controls the operation of the motor. The controllers of most scooters on the market adopt a split design, that is, the motor and controller are separately assembled inside the vehicle body. Generally, the controller is installed inside the vehicle body. When the controller is running, a lot of heat will be generated. The heat of the controller is difficult to be discharged from the vehicle body, causing the controller to be easily damaged by overheating. In particular, high-power controllers are difficult to solve the problem of heat dissipation because they are installed inside, resulting in damage due to excessive temperature of the controller. Summary of the invention

[0003] In view of the above problems, the present invention proposes a single-sided hub motor, which solves the problem that the controller of the existing single-sided hub motor generates a large amount of heat during operation. The heat of the controller is difficult to be discharged from the vehicle body, which causes the controller to be easily damaged by overheating. In particular, high-power controllers are installed inside and the heat dissipation problem is difficult to solve, resulting in damage due to excessive temperature of the controller.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A single-sided wheel hub motor comprises: a motor body and a connecting arm, wherein the connecting arm comprises an arm body and an arm head mounted on the top of the arm body, the bottom of the arm body is connected to the motor body in a transmission manner, a controller is installed in the connecting arm, a groove is installed on the side of the connecting arm close to the motor body, a reinforcing plate is provided in the groove along its length direction, a plurality of rows of guide reinforcing plates are arranged along its width direction on one side of the reinforcing plate, a through hole penetrating the reinforcing plate is provided on the reinforcing plate between two adjacent guide reinforcing plates, a guide channel is formed between the two adjacent guide reinforcing plates, the through hole connects the guide channel, the connecting arm comprises a front side blocking edge and a rear side blocking edge, the front side blocking edge and the rear side blocking edge are respectively located on both sides of the connecting arm, a through strip-shaped side hole is provided on the front side blocking edge, and the side hole connects the guide channel.

[0006] The present invention forms an airflow through the side hole through the relative movement with the wheel, and forms a guide channel and a perforation between two adjacent guide reinforcement plates to move to the entire groove, which is conducive to taking away the heat of the connecting arm. It improves the problem that the controller of the single-sided hub motor generates a lot of heat when it is running, and the heat of the controller is difficult to be discharged from the vehicle body, resulting in the controller being easily damaged by overheating, especially the problem that the high-power controller is installed in the internal heat dissipation problem, which is difficult to solve, resulting in the controller being damaged by overheating.

[0007] Optionally, a first mounting seat and a second mounting seat are provided on the top of the arm head, the first mounting seat is provided with a first mounting hole, and the second mounting seat is provided with a second mounting hole.

[0008] Optionally, a cover plate is provided at one end of the motor body away from the connecting arm, and a plurality of air-permeable grooves are formed along the circumferential edge of the cover plate.

[0009] Optionally, the connection between the arm head and the arm body is curved, so that the arm head is located directly above the motor body.

[0010] Optionally, an air outlet hole is provided in the rear side blocking edge, and a strip-shaped air outlet gap is provided at the bottom of the rear side blocking edge.

[0011] Optionally, a rotating shaft is installed in the air inlet hole, and the rotating shaft is rotatably installed inside the air outlet hole; a gear is installed on the rotating shaft, a rack is installed on the gear, the rack transmission belt is connected to an external drive motor, and blades are arranged on the rotating shaft.

[0012] An air inlet hole is arranged on the top of the rear side blocking edge, and the blades are used to send the air flow from the air inlet hole into the air outlet gap, thereby forming an air curtain.

[0013] Optionally, the wind curtain is tilted toward the motor body.

[0014] Optionally, a protective plate is provided on the outer side of the connecting arm, the protective plate protrudes outward to form a cavity, the circumferential side wall of the protective plate has a continuous, inclined slope, and the slope located obliquely below the protective plate is provided with a diffuser hole, and the rear side blocking edge is provided with a guide hole connected to the air outlet outlet hole, and the blade is used to draw the airflow from the cavity into the air gap, thereby forming a wind curtain. The existing single-sided hub motor is directly installed inside the wheel, and its heat dissipation condition is relatively poor. Long-term high-load operation may cause the motor to overheat, affecting the performance and life of the motor. Therefore, it is necessary to adopt an efficient thermal management system to ensure the normal operation of the motor. The present invention drives the rotating shaft and the blade to rotate by driving the motor, and the blade is used to draw the airflow from the air inlet hole on the upper part of the rear side blocking edge into the air gap, thereby forming a wind curtain, which is inclined to the motor body, and the wind curtain partially blocks the airflow formed by the wheel moving forward, and the airflow formed by blocking the airflow is more effective in the groove of the main body and the motor body, and effectively exchanges heat with the main body of the connecting arm and the motor body, thereby avoiding the situation where the rapid movement of the airflow fails to take away the heat.

[0015] Optionally, a water-blocking protective net is provided inside the air diffusion hole.

[0016] Optionally, a bearing member is mounted on the rotating shaft, and the bearing member is externally connected to the inner wall of the air outlet hole through a fixing strip.

[0017] Beneficial Effects

[0018] 1. The airflow formed by the relative movement with the wheel of the present invention passes through the side hole, and forms a guide channel and perforations between two adjacent guide reinforcement plates and moves to the entire groove, which is beneficial to take away the heat of the connecting arm.

[0019] 2. The present invention drives the rotating shaft and blades to rotate by driving the motor. The blades are used to draw airflow into and out of the air gap from the air inlet holes on the upper part of the rear baffle edge, thereby forming a wind curtain. The wind curtain is tilted toward the motor body, and the wind curtain part blocks the airflow formed by the forward movement of the wheels. The blocked airflow stays in the groove of the main body and the motor body, effectively exchanging heat with the main body of the connecting arm and the motor body, thereby avoiding the situation where the rapid movement of the airflow fails to take away the heat in time.

[0020] 3. The present invention drives the rotating shaft and blades to rotate by driving the motor. The blades are used to draw the airflow from the cavity of the protective plate into and out of the air gap, thereby forming a wind curtain. The wind curtain is tilted to point toward the motor body, and the wind curtain part blocks the airflow formed by the forward movement of the wheel (formed by the relative movement of the wheel). The blocked airflow stays in the groove of the main body and the motor body, effectively exchanging heat with the main body of the connecting arm and the motor body, which can further directly take away the heat generated by the controller inside the arm body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1is a front structural diagram of a single-side hub motor according to embodiment 1 of the present invention;

[0022] Figure 2 is a reverse structural diagram of a single-side hub motor according to embodiment 1 of the present invention;

[0023] Figure 3 The single-side hub motor of embodiment 1 of the present invention Figure 2 A partial enlarged view of part A;

[0024] Figure 4 The single-side hub motor of embodiment 1 of the present invention Figure 2 A partial enlarged view of part B;

[0025] Figure 5 It is a structural diagram of the rotating shaft and driving motor assembly of a single-side hub motor according to Embodiment 1 of the present invention;

[0026] Figure 6 1 is an internal structural diagram of the air outlet hole of the single-side hub motor according to the first embodiment of the present invention;

[0027] Figure 7 It is a front structural diagram of a single-side hub motor according to embodiment 2 of the present invention.

[0028] The reference numerals in the figures are:

[0029] 1. Motor body, 2. Connecting arm, 3. Arm body, 4. Arm head, 5. Air inlet, 6. Groove, 7. Reinforcement plate, 8. Guide reinforcement plate, 9. Perforation, 10. Guide channel, 11. Air diffusion hole, 12. Front blocking edge, 13. Rear blocking edge, 14. Side hole, 15. First mounting seat, 16. Second mounting seat, 17. First mounting hole, 18. Second mounting hole, 19. Cover plate, 20. Air vent, 21. Inclined surface, 22. Air outlet slit, 23. Rotating shaft, 24. Gear, 25. Rack, 26. Driving motor, 27. Bearing, 28. Fixing strip, 29. Protective plate, 30. Blade. DETAILED DESCRIPTION

[0030] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0031] In the description of the present invention, unless otherwise specified, "multiple" means two or more than two; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Example 1

[0033] The technical solution adopted by the present invention is as follows:

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the present invention discloses a single-side hub motor, comprising: a motor body 1 and a connecting arm 2, wherein the connecting arm comprises an arm body 3 and an arm head 4 installed on the top of the arm body, the bottom of the arm body is connected to the motor body, a controller is installed in the connecting arm, a groove 6 is installed on the side of the connecting arm close to the motor body, a reinforcing plate 7 is provided in the groove along its length direction, a plurality of rows of guide reinforcing plates 8 are arranged along its width direction on one side of the reinforcing plate, a through hole 9 penetrating the reinforcing plate is provided on the reinforcing plate between two adjacent guide reinforcing plates, a guide channel 10 is formed between the two adjacent guide reinforcing plates, and the through hole connects the guide channel, the connecting arm comprises a front side blocking edge 12 and a rear side blocking edge 13, the front side blocking edge and the rear side blocking edge are respectively located on both sides of the connecting arm, a through strip-shaped side hole 14 is provided on the front side blocking edge, and the side hole connects the guide channel. A first mounting seat 15 and a second mounting seat 16 are provided on the top of the arm head, a first mounting hole 17 is provided on the first mounting seat, and a second mounting hole 18 is provided on the second mounting seat. The motor body is provided with a cover plate 19 at one end away from the connecting arm, and the cover plate is provided with a plurality of air-permeable grooves 20 along its circumferential edge. The connection between the arm head and the arm body is curved, so that the arm head is located directly above the motor body. In this embodiment, the reinforcing plate also plays a role in preventing the airflow from passing through quickly and stagnating on the surface of the groove for a long time. At the same time, it can also strengthen the structural strength of the guide reinforcing plate itself, thereby allowing the reinforcing plate to have a smaller thickness.

[0035] In this embodiment, the side wall of the groove is made of heat-conducting material, such as stainless steel or other high-strength heat-conducting materials.

[0036] An air outlet hole is provided in the rear baffle, and a strip-shaped air outlet slit 22 is provided at the bottom of the rear baffle. A rotating shaft 23 is installed in the air inlet, and the rotating shaft is rotatably installed inside the air outlet hole; a gear 24 is installed on the rotating shaft, and a rack 25 is installed on the gear, and the rack is externally connected to a driving motor 26, and a blade 30 is provided on the rotating shaft. A bearing member 27 is installed on the rotating shaft, and the bearing member is externally connected to the inner wall of the air outlet hole through a fixing strip 28. An air inlet hole 5 is provided at the top of the rear baffle, and the blade is used to send the airflow from the air inlet hole into the air outlet slit, thereby forming a wind curtain. The wind curtain is tilted toward the motor body.

[0037] When this embodiment is implemented, the airflow formed by the relative movement of the wheel passes through the side hole, and forms a guide channel and perforations between two adjacent guide reinforcement plates and moves to the entire groove, which is beneficial to take away the heat of the connecting arm.

[0038] The driving motor drives the rotating shaft and blades to rotate, and the blades are used to draw air flow into and out of the air gap from the air inlet holes on the upper part of the rear baffle edge, thereby forming a wind curtain. The wind curtain is tilted toward the motor body, and its wind curtain part blocks the airflow formed by the forward movement of the wheels. The blocked airflow stays in the groove of the main body and the motor body, effectively exchanging heat with the main body of the connecting arm and the motor body, avoiding the situation where the rapid movement of the airflow is unable to take away the heat in time.

[0039] Example 2

[0040] like Figure 7 As shown, the difference between this embodiment 2 and embodiment 1 is that an air outlet hole is provided in the rear side baffle, and a strip-shaped air outlet slit is provided at the bottom of the rear side baffle. A rotating shaft is installed in the air inlet, and the rotating shaft is rotatably installed inside the air outlet hole; a gear is installed on the rotating shaft, and a rack is installed on the gear, and the rack is externally connected to a driving motor, and there are blades on the rotating shaft. A protective plate 29 is provided on the outer side of the connecting arm, and the protective plate protrudes outward to form a cavity. The circumferential side wall of the protective plate has a continuous, inclined slope 21, and a diffuser hole 11 is opened on the slope located obliquely below the protective plate. A guide hole is provided on the rear side baffle to connect the air outlet hole, and the blade is used to draw the airflow from the cavity into the air outlet slit, thereby forming a wind curtain. The wind curtain is tilted toward the motor body. A water-blocking protective net is provided on the inner side of the diffuser hole.

[0041] In this embodiment, the water-blocking protective net can also play a role in blocking solid dirt.

[0042] When this embodiment is implemented, the driving motor drives the rotating shaft and the blades to rotate, and the blades are used to draw the airflow from the cavity of the protective plate into and out of the air gap, thereby forming a wind curtain. The wind curtain is tilted to point to the motor body, and its wind curtain part blocks the airflow formed by the forward movement of the wheel (formed by the relative movement of the wheel). The airflow formed by blocking the airflow is more effective in staying in the groove of the main body and the motor body, and effectively exchanges heat with the main body of the connecting arm and the motor body, which can further directly take away the heat generated by the controller inside the arm body. The circumferential side wall of the protective plate has a continuous and inclined slope with heat dissipation holes opened on it to directly take away a large amount of heat generated by the motor.

[0043] The above description is only a preferred embodiment of the present invention, and does not limit the patent protection scope of the present invention. Any equivalent structural transformation made by using the contents of the present invention and the drawings, directly or indirectly used in other related technical fields, is also included in the protection scope of the present invention.

Claims

1. A single-side hub motor, characterized in that: include: A motor body and a connecting arm, wherein the connecting arm comprises an arm body and an arm head installed on the top of the arm body, the bottom of the arm body is connected to the motor body, a controller is installed in the connecting arm, a groove is installed on the side of the connecting arm close to the motor body, a reinforcing plate is provided in the groove along its length direction, a plurality of rows of guide reinforcing plates are arranged along its width direction on one side of the reinforcing plate, a through hole penetrating the reinforcing plate is provided on the reinforcing plate between two adjacent guide reinforcing plates, a guide channel is formed between the two adjacent guide reinforcing plates, the through hole connects the guide channel, the connecting arm comprises a front side blocking edge and a rear side blocking edge, the front side blocking edge and the rear side blocking edge are respectively located on both sides of the connecting arm, a through strip-shaped side hole is provided on the front side blocking edge, and the side hole connects the guide channel.

2. A single-side hub motor as claimed in claim 1, characterized in that: A first mounting seat and a second mounting seat are provided on the top of the arm head, a first mounting seat is provided with a first mounting hole, and a second mounting seat is provided with a second mounting hole; a cover plate is provided at one end of the motor body away from the connecting arm, and a plurality of air-permeable grooves are opened along the circumferential edge of the cover plate.

3. A single-side hub motor as claimed in claim 1, characterized in that: The connection between the arm head and the arm body is in a curved shape, so that the arm head is located directly above the motor body.

4. A single-side hub motor as claimed in claim 1, 2 or 3, characterized in that: An air outlet hole is arranged in the rear side blocking edge, and a strip-shaped air outlet slot is arranged at the bottom of the rear side blocking edge.

5. A single-side hub motor as claimed in claim 4, characterized in that: A rotating shaft is installed in the air inlet, and the rotating shaft is rotatably installed inside the air outlet; a gear is installed on the rotating shaft, a rack is installed on the gear, the rack is externally connected to a driving motor, and blades are arranged on the rotating shaft.

6. A single-side hub motor as claimed in claim 4, characterized in that: An air inlet hole is arranged on the top of the rear side blocking edge, and the blades are used to send the air flow from the air inlet hole into the air outlet gap, thereby forming an air curtain.

7. A single-side hub motor as claimed in claim 4, characterized in that: The wind curtain is tilted toward the motor body.

8. A single-side hub motor as claimed in claim 5, characterized in that: A protective plate is provided on the outside of the connecting arm, and the protective plate protrudes outward to form a cavity. The circumferential side wall of the protective plate has a continuous, inclined slope, and air dispersion holes are opened on the slope located obliquely below the protective plate. A guide hole is provided on the rear side blocking edge to connect with the air outlet hole, and the blade is used to draw the air flow from the cavity into the air outlet gap, thereby forming a wind curtain.

9. A single-side hub motor as claimed in claim 8, characterized in that: A water-blocking protective net is arranged inside the air diffusion hole.

10. The single-side hub motor according to claim 5, characterized in that: A bearing member is mounted on the rotating shaft, and the bearing member is externally connected to the inner wall of the air outlet hole through a fixing strip.

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