Hub motor device applied to AI intelligent driving trolley and AI intelligent driving trolley

Abstract

The embodiment of the utility model provides a hub motor device applied to an AI intelligent driving trolley and the AI intelligent driving trolley, and the hub motor device comprises a rim which is provided with a mounting hole; the hub is fixedly connected with the rim and covers the first opening of the mounting hole; the speed reduction output mechanism comprises a fixed seat, a plurality of first planet gears and a walking driver, the fixed seat is provided with a gear ring and is in running fit with the mounting hole, the plurality of first planet gears are relatively rotatably mounted on the hub and are meshed with the gear ring, and the walking driver is mounted on the fixed seat and is in transmission connection with the plurality of first planet gears; the walking driver can drive the first planet wheels to rotate so that the hub and the rim can rotate relative to the fixing base. In the structure, the hub serves as the output end of the speed reduction output mechanism, and the speed reduction output mechanism does not need to be provided with an additional output shaft, so that the axial size of the hub motor device is reduced, and the miniaturization design of the AI intelligent driving trolley is facilitated.

Description

Hub motor device for AI-powered autonomous vehicles and AI-powered autonomous vehicles Technical Field

[0001] This utility model relates to the field of AI intelligent driving vehicle technology, and in particular to a hub motor device for use in AI intelligent driving vehicles and an AI intelligent driving vehicle. Background Technology

[0002] With the advancement of science and technology, AI-powered autonomous vehicles are being used more and more widely in entertainment, service, and industrial fields. To simplify the structure and improve driving flexibility, an increasing number of AI-powered autonomous vehicles are now using hub motors to achieve their mobility.

[0003] In the existing technology, in the hub motor device of the AI ​​intelligent driving car, the driving driver increases the output torque through the planetary reducer and then transmits it to the wheel rim, causing the wheel rim to rotate. However, due to the relatively complex structure of the planetary reducer, the axial dimension of the hub motor device is too long, which is not conducive to the miniaturization design of the AI ​​intelligent driving car. Summary of the Invention

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a hub motor device for an AI-powered intelligent driving vehicle and an AI-powered intelligent driving vehicle, which can reduce the axial dimension of the hub motor device, thus facilitating the miniaturization design of the AI-powered intelligent driving vehicle.

[0005] In a first aspect, this utility model provides a hub motor device for an AI-powered intelligent driving vehicle. The hub motor device includes: a rim with a mounting hole; a hub fixedly connected to the rim and covering a first opening of the mounting hole; and a reduction output mechanism including a fixed base, a plurality of first planetary gears, and a drive mechanism. The fixed base has a gear ring that rotatably engages with the mounting hole. The plurality of first planetary gears are rotatably mounted on the hub and mesh with the gear ring. The drive mechanism is mounted on the fixed base and is connected to the plurality of first planetary gears via a transmission connection. The drive mechanism can drive the plurality of first planetary gears to rotate, thereby causing the hub and the rim to rotate relative to the fixed base.

[0006] The hub motor device provided in the first aspect of this utility model has at least the following beneficial effects:

[0007] By mounting multiple first planetary gears rotatably onto the hub and meshing them with the gear ring on the fixed seat, the multiple first planetary gears can increase the output torque generated by the drive and directly transmit it to the hub, which in turn drives the rim to rotate synchronously. In this structure, the hub acts as the output end of the reduction output mechanism, which does not require an additional output shaft, thereby reducing the axial dimension of the hub motor device and facilitating the miniaturization of the AI ​​intelligent driving vehicle.

[0008] In one embodiment of this implementation, the deceleration output mechanism includes a planet carrier, a sun gear, and a plurality of second planet gears. The sun gear is fixed to the planet carrier and meshes with the plurality of first planet gears. The plurality of second planet gears are rotatably mounted on the planet carrier and mesh with the ring gear. The output shaft of the travel drive meshes with the plurality of second planet gears.

[0009] In one embodiment of this implementation, the plurality of first planetary gears and the sun gear are located on the side of the planet carrier facing away from the plurality of second planetary gears.

[0010] In one embodiment of this implementation, the fixed base has a mounting chamber, in which a mounting plate is formed, the travel drive is mounted on one side of the mounting plate, the planetary carrier is located on the other side of the mounting plate, and the output shaft of the travel drive passes through the mounting plate and meshes with a plurality of second planetary gears on the planetary carrier.

[0011] In one embodiment of this implementation, a limiting protrusion is formed on the inner wall of the mounting hole, and a mating protrusion is provided on the outer periphery of the fixing seat. The fixing seat can extend into the mounting hole from the first opening, so that the mating protrusion abuts against the inner wall of the mounting hole in the radial direction and abuts against the limiting protrusion in the axial direction.

[0012] In one embodiment of this implementation, the mounting hole has a second opening opposite to the first opening, the limiting protrusion has a clearance groove, and the outer periphery of the fixing seat is provided with a fixing post for connection with the steering device. The clearance groove is used to allow the fixing post to pass through when the fixing seat is inserted into the mounting hole, so that the fixing post extends out of the second opening.

[0013] In one embodiment of this implementation, the fixing post and the mating protrusion are spaced apart in the axial direction and located on opposite sides of the limiting protrusion in the axial direction.

[0014] In one embodiment of this implementation, there are multiple mating protrusions, which are spaced apart circumferentially, and a chip removal groove is formed between two adjacent mating protrusions.

[0015] In one embodiment of this implementation, the hub is provided with a plurality of first rotating shafts, and the plurality of first planetary gears are respectively rotatably engaged with the corresponding first rotating shafts.

[0016] Secondly, this utility model provides an AI intelligent driving vehicle, which includes a frame, a steering device, and a hub motor device as described in any embodiment of the first aspect of the embodiment. The steering device is mounted on the frame and connected to the hub motor device.

[0017] The AI-powered intelligent driving vehicle provided by the second aspect of this utility model has at least the following beneficial effects:

[0018] By incorporating the hub motor device from the first aspect of the embodiment into the AI ​​intelligent driving vehicle, the axial dimension of the AI ​​intelligent driving vehicle is reduced as the axial dimension of the hub motor device is smaller, thereby better meeting the requirements of miniaturization design.

[0019] 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

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 is a structural schematic diagram of an AI intelligent driving vehicle according to one embodiment of the present invention;

[0022] Figure 2 is a structural schematic diagram of the hub motor device, steering device and part of the frame of the AI ​​intelligent driving car in Figure 1;

[0023] Figure 3 is a schematic diagram of the hub motor device in Figure 2;

[0024] Figure 4 is a schematic diagram of the hub motor device in Figure 3 in its disassembled state;

[0025] Figure 5 is a structural schematic diagram of the hub motor device in Figure 3 from another perspective in its disassembled state;

[0026] Figure 6 is a schematic diagram of the mounting bracket in the hub motor device of Figure 4;

[0027] Figure 7 is a schematic diagram of the rim structure in the hub motor device of Figure 4.

[0028] Figure label:

[0029] AI-powered intelligent driving vehicle 1000; hub motor device 100; wheel rim 10; tire 11; mounting hole 101; first opening 1011; second opening 1012; limiting protrusion 1013; clearance groove 1014; wheel hub 20; first rotating shaft 21; reduction output mechanism 30; fixed seat 31; mounting chamber 3101; gear ring 311; mounting plate 312; mating protrusion 313; fixed column 314; chip removal groove 3131; first planetary gear 32; planetary carrier 33; second rotating shaft 331; sun gear 34; second planetary gear 35; connecting frame 40; rotating shaft 41; sliding shaft 42; steering device 200; rack 210; slide groove 220; frame 300. Detailed Implementation

[0030] 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 are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0033] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. 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.

[0035] Please refer to Figures 1 and 2. Figure 1 is a structural schematic diagram of an AI-powered intelligent driving vehicle 1000 according to one embodiment of the present invention; Figure 2 is a structural schematic diagram of the hub motor device 100, steering device 200, and part of the frame 300 of the AI-powered intelligent driving vehicle 1000 in Figure 1. The present invention provides an AI-powered intelligent driving vehicle 1000, which includes a frame 300, a steering device 200, and the hub motor device 100 provided in this embodiment. The steering device 200 is mounted on the frame 300 and connected to the hub motor device 100. By adding the hub motor device 100 of this embodiment to the AI-powered intelligent driving vehicle 1000, the axial dimension of the AI-powered intelligent driving vehicle 1000 is reduced due to the smaller axial dimension of the hub motor device 100, thereby better meeting the requirements of miniaturization design.

[0036] Specifically, the AI-powered intelligent driving vehicle 1000 in this embodiment is constructed as a vehicle-shaped robot, containing four hub motor units 100 and two steering units 200. One steering unit 200 connects to the two front hub motor units 100, and the other steering unit 200 connects to the two rear hub motor units 100. The chassis 300 has an internal circuit board for communication with external devices, enabling the AI-powered intelligent driving vehicle 1000 to communicate with smartphones, remote controls, drones, and other external devices to meet the needs of measurement, human-computer interaction, and other scenarios.

[0037] The following is a detailed description of the hub motor device 100 in the AI ​​intelligent driving car 1000.

[0038] Please refer to Figures 3 to 5. Figure 3 is a structural schematic diagram of the hub motor device 100 in Figure 2; Figure 4 is a structural schematic diagram of the hub motor device 100 in Figure 3 in an exploded state; Figure 5 is a structural schematic diagram of the hub motor device 100 in Figure 3 from another perspective in an exploded state. This utility model provides a hub motor device 100 for use in an AI intelligent driving vehicle 1000. The hub motor device 100 includes a rim 10, a hub 20, and a reduction output mechanism 30. The rim 10 has a mounting hole 101. The hub 20 is fixedly connected to the rim 10 and covers the first opening 1011 of the mounting hole 101. The reduction output mechanism 30 includes a fixed base 31, a plurality of first planetary gears 32, and a drive unit (not shown). The fixed base 31 has a gear ring 311, which rotatably engages with the mounting hole 101. The plurality of first planetary gears 32 are rotatably mounted on the hub 20 and all mesh with the gear ring 311. The travel drive is mounted on the fixed base 31 and is connected to a plurality of first planetary gears 32. The travel drive can drive the plurality of first planetary gears 32 to rotate, so that the hub 20 and the rim 10 rotate relative to the fixed base 31.

[0039] Specifically, a tire 11 is fitted around the outer periphery of the rim 10, and the hub 20 is optionally fixedly connected to the rim 10 via screws or other connecting components to achieve synchronous rotation of the hub 20 and the rim 10. In this embodiment, there are three first planetary gears 32. In other embodiments, the number of first planetary gears 32 may be two, four, or other numbers. Optionally, the output shaft of the travel drive is a gear shaft, which meshes with multiple first planetary gears 32 to increase the power torque and transmit it to the hub 20 and the rim 10 through a single-stage reduction.

[0040] By mounting multiple first planetary gears 32 rotatably onto the hub 20 and meshing with the gear ring 311 on the fixed seat 31, the multiple first planetary gears 32 can increase the output torque generated by the travel drive and directly transmit it to the hub 20, which in turn drives the rim 10 to rotate synchronously. In this structure, the hub 20 acts as the output end of the reduction output mechanism 30. The reduction output mechanism 30 does not need to be equipped with an additional output shaft, thereby reducing the axial dimension of the hub motor device 100, which is beneficial for the miniaturization design of the AI ​​intelligent driving car 1000.

[0041] In one embodiment of this implementation, as shown in Figure 4, the hub 20 is provided with a plurality of first rotating shafts 21, and a plurality of first planetary gears 32 are respectively rotatably engaged with the corresponding first rotating shafts 21. This arrangement simplifies the installation of the first planetary gears 32 onto the hub 20, thus reducing costs.

[0042] In one embodiment of this implementation, referring to Figures 3 to 5, the reduction output mechanism 30 includes a planet carrier 33, a sun gear 34, and a plurality of second planet gears 35. The sun gear 34 is fixed to the planet carrier 33 and meshes with a plurality of first planet gears 32. The plurality of second planet gears 35 are rotatably mounted on the planet carrier 33 and mesh with a gear ring 311. The output shaft of the travel drive meshes with the plurality of second planet gears 35. With this configuration, two-stage reduction can be achieved through two sets of planet gears, further increasing the output torque. Furthermore, since both the first planet gears 32 and the second planet gears 35 mesh with the gear ring 311 on the fixed base 31, the space of the fixed base 31 can be fully utilized, which is beneficial for reducing the axial dimension.

[0043] Specifically, the planet carrier 33 is provided with multiple second rotating shafts 331, and multiple second planetary gears 35 are respectively rotated and engaged with the corresponding first rotating shaft 21.

[0044] In one embodiment of this implementation, referring to Figures 3 to 5, a plurality of first planetary gears 32 and a sun gear 34 are located on the side of the planet carrier 33 facing away from a plurality of second planetary gears 35. This arrangement ensures that the drive unit, the first planetary gears 32, the sun gear 34, and the second planetary gears 35 are arranged axially to facilitate sequential speed reduction transmission.

[0045] In one embodiment of this implementation, please refer to Figures 4 to 6. Figure 6 is a structural schematic diagram of the mounting base 31 in the hub motor device 100 of Figure 4. The mounting base 31 has a mounting chamber 3101, within which a mounting plate 312 is formed. A travel drive is mounted on one side of the mounting plate 312, and a planetary carrier 33 is located on the other side of the mounting plate 312. The output shaft of the travel drive passes through the mounting plate 312 and meshes with a plurality of second planetary gears 35 on the planetary carrier 33. Specifically, the mounting plate 312 divides the mounting chamber 3101 into two interconnected chambers, wherein the travel drive is mounted in the chamber relatively far from the hub 20, and the planetary carrier 33 is mounted in the chamber relatively close to the hub 20. This arrangement allows the travel drive, the planetary carrier 33, and the first planetary gears 32 and second planetary gears 35 on the planetary carrier 33 to be mounted within the mounting base 31, thereby significantly reducing the axial space occupied by these components and decreasing the axial dimension.

[0046] In one embodiment of this implementation, please refer to Figures 4 to 7. Figure 7 is a structural schematic diagram of the rim 10 in the hub motor device 100 of Figure 4. A limiting protrusion 1013 is formed on the inner wall of the mounting hole 101, and a mating protrusion 313 is provided on the outer periphery of the fixing seat 31. The fixing seat 31 can extend into the mounting hole 101 from the first opening 1011, so that the mating protrusion 313 abuts against the inner wall of the mounting hole 101 in the radial direction, and abuts against the limiting protrusion 1013 in the axial direction. With this configuration, the fixing seat 31 can extend into the mounting hole 101 from the first opening 1011, and the limiting protrusion 1013 limits the axial position of the fixing seat 31 in the mounting hole 101, improving assembly efficiency. Simultaneously, the mating protrusion 313 abuts against the inner wall of the mounting hole 101 in the radial direction, thereby achieving a rotational fit.

[0047] Specifically, in order to fully abut against the mating protrusion 313, the limiting protrusion 1013 is constructed as an annular protrusion.

[0048] In one embodiment of this implementation, referring to Figures 4 to 7, the mounting hole 101 has a second opening 1012 opposite to the first opening 1011. The limiting protrusion 1013 has a clearance groove 1014. The outer periphery of the fixing seat 31 is provided with a fixing post 314 for connection with the steering device 200. The clearance groove 1014 is used to allow the fixing post 314 to pass through when the fixing seat 31 extends into the mounting hole 101, so that the fixing post 314 extends out of the second opening 1012. With this configuration, the limiting protrusion 1013 can avoid the fixing post 314 through the clearance groove 1014, so that the fixing post 314 can extend out of the second opening 1012 and connect with the steering device 200.

[0049] Specifically, please refer to Figure 2. The hub motor device 100 also includes a connecting frame 40, and the fixing column 314 is fixedly connected to the connecting frame 40 by screws. The connecting frame 40 is provided with a rotating shaft 41 and a sliding shaft 42. The rotating shaft 41 is rotatably engaged with the frame 300. The steering device 200 includes a steering drive (not shown) and a rack 210. The rack 210 is provided with a groove 220. The extension direction of the groove 220 is perpendicular to the movement direction of the rack 210. The sliding shaft 42 of the connecting frame 40 is slidably engaged with the groove 220, so that when the steering drive drives the rack 210 to move by meshing, the rack 210 can drive the sliding shaft 42 to slide along the groove 220, so that the connecting frame 40 rotates around the axis of the rotating shaft 41, thereby realizing steering.

[0050] In this embodiment, both the steering drive and the travel drive are constructed as motors.

[0051] In one embodiment of this implementation, referring to Figures 4 to 7, the fixing post 314 and the mating protrusion 313 are spaced apart axially and located on opposite sides of the limiting protrusion 1013 axially. This arrangement facilitates the installation of the rim 10 and the fixing seat 31. It is understood that during installation, components such as the planetary carrier 33 can be first installed onto the fixing seat 31. Then, the fixing seat 31 is inserted into the mounting hole 101 through the first opening 1011, so that the fixing post 314 passes through the clearance groove 1014 of the limiting protrusion 1013, and the mating protrusion 313 abuts against the limiting protrusion 1013. The fixing seat 31 is then slightly rotated to misalign the fixing post 314 with the clearance groove 1014, preventing the fixing seat 31 from retracting from the clearance groove 1014, thus completing the installation. When disassembling, the hub 20 can be removed from the rim 10 first, then the fixing seat 31 can be rotated so that the fixing post 314 corresponds to the position of the clearance groove 1014, and then the fixing seat 31 can be pulled out from the second opening 1012 to complete the disassembly.

[0052] In one embodiment of this implementation, referring to Figures 4 to 7, there are multiple mating protrusions 313, which are spaced apart circumferentially, and a chip removal groove 3131 is formed between two adjacent mating protrusions 313. It is understood that the fixing seat 31 achieves rotational engagement by abutting against the inner wall of the mounting hole 101 through the mating protrusions 313. During relative rotation, some fine debris may be generated, which can easily affect the rotation of the mating protrusions 313 within the mounting hole 101. External dust and other debris can also affect the rotation of the mating protrusions 313 within the mounting hole 101. By providing multiple mating protrusions 313 and forming a chip removal groove 3131 between two adjacent mating protrusions 313, the chip removal groove 3131 can discharge fine debris, dust, and other debris, reducing the risk of these debris getting stuck between the mating protrusions 313 and the inner wall of the mounting hole 101, thus affecting the relative rotation of the fixing seat 31 and the rim 10.

[0053] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A hub motor device for use in AI-powered intelligent driving vehicles, characterized in that, include: The wheel rim has a mounting hole; the wheel hub is fixedly connected to the wheel rim and covers the first opening of the mounting hole; The speed reduction output mechanism includes a fixed base, a plurality of first planetary gears, and a drive mechanism. The fixed base is provided with a gear ring and is rotatably fitted into the mounting hole. The plurality of first planetary gears are rotatably mounted on the hub and all mesh with the gear ring. The drive mechanism is mounted on the fixed base and is connected to the plurality of first planetary gears via a transmission. The drive mechanism can drive the plurality of first planetary gears to rotate, so that the hub and the rim rotate relative to the fixed base.

2. The hub motor device according to claim 1, characterized in that, The reduction output mechanism includes a planet carrier, a sun gear, and multiple second planet gears. The sun gear is fixed to the planet carrier and meshes with multiple first planet gears. The multiple second planet gears are rotatably mounted on the planet carrier and mesh with the ring gear. The output shaft of the travel drive meshes with the multiple second planet gears.

3. The hub motor device according to claim 2, characterized in that, The plurality of first planetary gears and the sun gear are located on the side of the planet carrier opposite to the plurality of second planetary gears.

4. The hub motor device according to claim 2, characterized in that, The mounting base has a mounting chamber, in which a mounting plate is formed. The travel drive is mounted on one side of the mounting plate, and the planetary carrier is located on the other side of the mounting plate. The output shaft of the travel drive passes through the mounting plate and meshes with a plurality of second planetary gears on the planetary carrier.

5. The hub motor device according to claim 1, characterized in that, The inner wall of the mounting hole is provided with a limiting protrusion, and the outer periphery of the fixing seat is provided with a mating protrusion. The fixing seat can extend into the mounting hole from the first opening so that the mating protrusion abuts against the inner wall of the mounting hole in the radial direction and abuts against the limiting protrusion in the axial direction.

6. The hub motor device according to claim 5, characterized in that, The mounting hole has a second opening opposite to the first opening, the limiting protrusion has a clearance groove, and the outer periphery of the fixing seat has a fixing post for connection with the steering device. The clearance groove is used to allow the fixing post to pass through when the fixing seat is inserted into the mounting hole, so that the fixing post extends out of the second opening.

7. The hub motor device according to claim 6, characterized in that, The fixing post and the mating protrusion are spaced apart in the axial direction and located on opposite sides of the limiting protrusion in the axial direction.

8. The hub motor device according to claim 6, characterized in that, The number of the mating protrusions is multiple, and the multiple mating protrusions are arranged at intervals along the circumference, with a chip removal groove formed between two adjacent mating protrusions.

9. The hub motor device according to claim 1, characterized in that, The hub is provided with multiple first rotating shafts, and multiple first planetary gears are respectively rotatably engaged with the corresponding first rotating shafts.

10. An AI-powered intelligent driving vehicle, characterized in that, It includes a chassis, a steering system, and a hub motor assembly according to any one of claims 1 to 9, wherein the steering system is mounted on the chassis and connected to the hub motor assembly.

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