Hub motor and mobile device

Abstract

The utility model relates to the technical field of mobile wheel hubs, in particular to a wheel hub motor and mobile equipment, which comprises a motor body and a tire, the motor body is provided with a rotor shell, the tire is provided with a connecting cavity, the tire covers the rotor shell through the connecting cavity, and the motor body drives the tire to rotate through the rotation of the rotor shell; a tread pattern part is arranged on the periphery of the tire, the tread pattern part comprises protruding blocks evenly distributed on the periphery of the tire, a plurality of grooves are formed in the periphery of the tire, the grooves are evenly distributed in the periphery of the tire in the annular direction, a boss is arranged between every two adjacent grooves, and an air pressure cavity is formed in the inner side of each boss. According to the utility model, the tread pattern part is arranged on the periphery of the tire and is formed by the uniformly distributed bumps, so that the driving stability of the hub in the driving process is ensured, and the grooves and the bosses are also arranged, so that water can be effectively drained in the driving process, and an anti-skid effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile hubs, in particular to a hub motor and a mobile device. Background Art

[0002] In-wheel motors usually refer to an electric drive system integrated into the wheel hub of a mobile device. Such motors are usually used in electric vehicles, hybrid vehicles, smart robots and other fields. They directly drive the wheel hub of the device to provide power.

[0003] In-wheel motors need to be connected to power and tires during use. The existing tire structure has poor stability during driving, especially in the field of smart homes. It is easy to slip when driving or cleaning on some smooth surfaces, and cannot effectively drain water. Therefore, it is necessary to improve the tire structure of the existing hub motor. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a tread portion arranged on the outer periphery of the tire and formed by evenly distributed protrusions, so that the wheel hub can ensure the driving stability during driving. Grooves and bosses are also arranged, which can effectively drain water during driving and play an anti-skid role in the wheel hub motor and mobile equipment.

[0005] The technical solution adopted by the utility model is: a hub motor, including a motor body and a tire, the motor body is provided with a rotor shell, the tire is provided with a connecting cavity, the tire is provided on the rotor shell through the connecting cavity cover, and the motor body drives the tire to rotate through the rotation of the rotor shell; the outer periphery of the tire is provided with a tread portion, the tread portion includes protrusions evenly distributed on the outer periphery of the tire, the outer periphery of the tire is provided with a plurality of grooves, the plurality of grooves are evenly distributed on the outer periphery of the tire in a circumferential direction, a boss is provided between two adjacent grooves, and an air pressure cavity is provided on the inner side of the boss.

[0006] A further improvement to the above scheme is that the motor body includes a base, a stator assembly, a rotor assembly, a rotating shaft assembly and an end cover, the base is arranged in the rotating shaft assembly and one end is rotatably connected to the rotor housing, the stator assembly is arranged on the outside of the base, the rotor assembly is arranged on the inner circumference of the rotor housing and is arranged opposite to the stator assembly, one end of the end cover is connected to one end of the rotor housing to form an accommodation cavity in the rotor housing, and the stator assembly and the rotor assembly are both in the accommodation cavity.

[0007] A further improvement to the above solution is that the tire includes an inner ring portion and an outer ring portion, the outer ring portion is arranged on the outer periphery of the inner ring portion, and the inner side surface of the inner ring portion is in contact with one side of the rotor housing.

[0008] A further improvement to the above solution is that a thickened portion is provided at the connection between the inner ring portion and the outer ring portion.

[0009] A further improvement to the above scheme is that the tread portion is provided with a dividing groove, and the dividing groove is used to divide the tread portion into a first tread area and a second tread area, and the first tread area and the second tread area are both provided with grooves and bosses.

[0010] A further improvement to the above solution is that the grooves on the first tread area are staggered with the grooves on the second tread area.

[0011] A further improvement to the above solution is that the air pressure chamber is arranged on the inner side of the boss and close to the groove.

[0012] A further improvement to the above solution is that an inner curved surface is provided on a side of the groove close to the air pressure chamber.

[0013] A further improvement to the above solution is that the air pressure chamber is arranged in an L shape.

[0014] A mobile device comprises the hub motor.

[0015] The beneficial effects of the utility model are:

[0016] Compared with the existing hub motor, the motor body of the utility model adopts an outer rotor motor, and is connected and fixed by the rotor shell and the connecting cavity of the wheel leg, which has good stability during the movement of the wheel hub. The tread portion is arranged on the outer periphery of the tire and is formed by evenly distributed protrusions, so that the wheel hub can ensure the stability of driving during driving and play an anti-skid role. Grooves and bosses are also arranged, which can effectively drain water during driving and further play an anti-skid role. The air pressure chamber is arranged on the inner side of the boss to play a shock-absorbing role during driving, ensuring a smoother driving process.

[0017] The motor body of the utility model drives the tire to rotate through the rotation of the rotor shell, realizing efficient energy transmission and rotational force. The close connection and coordinated work between the motor body and the tire ensure the effective utilization of energy and transmission efficiency. The tire is arranged on the rotor shell through the connection cavity cover, forming a stable connection structure. This connection method can ensure good cooperation between the tire and the motor body, reduce friction and energy loss during the transmission process, and improve the stability and reliability of rotation.

[0018] The outer circumference of the tire is provided with a tread portion, which includes bumps and multiple grooves evenly distributed on the outer circumference of the tire. This design can increase the friction between the tire and the ground, providing better grip and traction. The combination of bumps and grooves makes the tire have good anti-skid and water drainage capabilities under different road conditions.

[0019] Bosses are arranged between the grooves, and a pressure chamber is arranged inside the bosses. The presence of the bosses can increase the rigidity and stability of the tire and improve the anti-skid ability. The design of the pressure chamber can adjust the elasticity of the tire by adjusting the air pressure inside the tire to adapt to different road surfaces and load conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the hub motor of the utility model;

[0021] Figure 2 for Figure 1 The main schematic diagram of the mid-wheel hub motor;

[0022] Figure 3 for Figure 2 Sectional view of AA in the middle;

[0023] Figure 4 for Figure 2 Enlarged cross-sectional view at point B in FIG.

[0024] Explanation of the accompanying drawings: motor body 1, rotor housing 11, base 12, stator assembly 13, rotor assembly 14, shaft assembly 15, end cover 16, tire 2, connecting cavity 21, tread portion 22, protrusion 221, dividing groove 222, first tread area 223, second tread area 224, groove 23, inner arc surface 231, boss 24, air pressure cavity 25, inner ring portion 26, outer ring portion 27. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0028] like Figure 1 to Figure 4As shown, in one embodiment of the utility model, a wheel hub motor is involved, including a motor body 1 and a tire 2, wherein the motor body 1 is provided with a rotor housing 11, and the tire 2 is provided with a connecting cavity 21, wherein the tire 2 is covered on the rotor housing 11 through the connecting cavity 21, and the motor body 1 drives the tire 2 to rotate through the rotation of the rotor housing 11; the outer periphery of the tire 2 is provided with a tread portion 22, wherein the tread portion 22 includes a convex block 221 uniformly distributed on the outer periphery of the tire 2, and the outer periphery of the tire 2 is provided with a plurality of grooves 23, wherein the plurality of grooves 23 are uniformly distributed on the outer periphery of the tire 2 in an annular direction, and a boss 24 is provided between two adjacent grooves 23, and an air pressure cavity 25 is provided on the inner side of the boss 24. Compared with the existing wheel hub motor, the motor body 1 of the utility model adopts an outer rotor motor, and is connected and fixed through the rotor housing 11 and the connecting cavity 21 of the wheel leg, and has good stability during the movement of the wheel hub. The tread portion 22 is arranged on the outer periphery of the tire 2 and is formed by evenly distributed protrusions 221, so that the wheel hub ensures driving stability during driving and plays an anti-skid role. A groove 23 and a boss 24 are also provided, which can effectively drain water during driving and further play an anti-skid role. The inner side of the boss 24 is provided with an air pressure chamber 25 for shock absorption during driving, ensuring a more stable driving process.

[0029] The motor body 1 of the above embodiment drives the tire 2 to rotate through the rotation of the rotor housing 11, thereby achieving efficient energy transmission and rotational force. The close connection and coordinated work between the motor body 1 and the tire 2 ensure the effective utilization and transmission efficiency of energy. The tire 2 is covered on the rotor housing 11 through the connecting cavity 21, forming a stable connection structure. This connection method can ensure good cooperation between the tire 2 and the motor body 1, reduce friction and energy loss during the transmission process, and improve the stability and reliability of rotation.

[0030] In the above embodiment, the outer periphery of the tire 2 is provided with a tread portion 22, which includes protrusions 221 and a plurality of grooves 23 evenly distributed on the outer periphery of the tire 2. This design can increase the friction between the tire 2 and the ground, and provide better grip and traction. The combined design of the protrusions 221 and the grooves 23 enables the tire 2 to have good anti-skid and drainage capabilities under different road conditions.

[0031] In the above embodiment, bosses 24 are provided between the plurality of grooves 23, and an air pressure chamber 25 is provided inside the bosses 24. The presence of the bosses 24 can increase the rigidity and stability of the tire 2 and improve the anti-skid capability. The design of the air pressure chamber 25 can adjust the elasticity of the tire 2 by adjusting the air pressure inside the tire 2 to adapt to different road surfaces and load conditions.

[0032] The motor body 1 includes a base 12, a stator assembly 13, a rotor assembly 14, a shaft assembly 15 and an end cover 16. The base 12 is arranged in the shaft assembly 15 and one end is rotatably connected to the rotor housing 11. The stator assembly 13 is arranged on the outside of the base 12. The rotor assembly 14 is arranged on the inner circumference of the rotor housing 11 and is arranged opposite to the stator assembly 13. One end of the end cover 16 is connected to one end of the rotor housing 11 to form a placement cavity in the rotor housing 11. The stator assembly 13 and the rotor assembly 14 are both in the placement cavity. In this embodiment, the motor body 1 is composed of components such as the base 12, the stator assembly 13, the rotor assembly 14, the shaft assembly 15 and the end cover 16 to form a compact structure. This design makes the motor body 1 have a smaller volume and size, which can better adapt to the installation space restrictions of the hub motor. The rotor assembly 14 is arranged on the inner circumference of the rotor housing 11 and is arranged opposite to the stator assembly 13. This structure makes the electromagnetic transmission efficiency between the stator and the rotor higher, and improves the power density and rotation efficiency of the motor. The base 12 is arranged in the shaft assembly 15 and is rotatably connected to the rotor housing 11 to form a stable connection structure. This connection method can ensure the stability and reliability of the motor body 1 during operation and reduce the vibration and noise caused by rotation. The structural design of the motor body 1 takes into account the heat dissipation requirements. A placement cavity is formed in the rotor housing 11, and the stator assembly 13 and the rotor assembly 14 are both in the placement cavity. This design is conducive to heat dissipation. It is connected through one end of the end cover 16 to effectively conduct and discharge the generated heat, thereby improving the heat dissipation performance and stability of the motor.

[0033] The tire 2 includes an inner ring portion 26 and an outer ring portion 27, wherein the outer ring portion 27 is arranged on the outer periphery of the inner ring portion 26, and the inner side surface of the inner ring portion 26 is in contact with one side of the rotor housing 11. Specifically, a thickened portion is provided at the connection between the inner ring portion 26 and the outer ring portion 27. The inner ring portion 26 and the outer ring portion 27 are formed by integral injection molding of the rubber tire 2. In this embodiment, the inner ring portion 26 and the outer ring portion 27 are connected together by the thickened portion to form a tight connection structure. The inner side surface of the inner ring portion 26 is in contact with one side of the rotor housing 11, ensuring a tight connection between the inner ring portion 26 and the rotor housing 11, reducing energy loss and vibration. The inner ring portion 26 and the outer ring portion 27 are formed by integral injection molding of the rubber tire 2. This manufacturing process makes the inner ring portion 26 and the outer ring portion 27 seamless, thereby improving the overall strength and durability of the tire 2. At the same time, integral injection molding can also reduce the weight of the tire 2 and improve the fuel efficiency of the vehicle. The rubber material has good elasticity and grip, and can provide stable handling and anti-skid performance. The integral injection molding of the inner ring portion 26 and the outer ring portion 27 makes the overall structure of the tire 2 more solid, and can better resist lateral forces and provide better handling performance.

[0034] The tread portion 22 is provided with a dividing groove 222, and the dividing groove 222 is used to divide the tread portion 22 into a first tread area 223 and a second tread area 224, and the first tread area 223 and the second tread area 224 are both provided with a groove 23 and a boss 24. Specifically, the groove 23 on the first tread area 223 and the groove 23 of the second tread area 224 are staggered. In this embodiment, the tread portion 22 is provided with a dividing groove 222, which is used to divide the tread portion 22 into the first tread area 223 and the second tread area 224. This segmentation design helps to improve the stability and grip of the tire 2. By dividing the tread portion 22 into different areas, each area can have specific functions and characteristics to adapt to different road conditions and driving requirements. The first tread area 223 and the second tread area 224 are both provided with a groove 23 and a boss 24. The presence of the groove 23 and the boss 24 can increase the contact area between the tire 2 and the ground, providing better grip and traction. The staggered arrangement of the grooves 23 and the bosses 24 can increase the stability and drainage performance of the tire 2 and reduce the slipping phenomenon caused by water retention. The combined design of the dividing grooves 222, the grooves 23 and the bosses 24 enhances the anti-skid performance of the tire 2. The presence of the grooves 23 and the bosses 24 can effectively remove water or debris, maintain good contact between the tire 2 and the ground, and provide higher anti-skid performance and safety.

[0035] The air pressure chamber 25 is disposed on the inner side of the boss 24 and is close to the groove 23. In this embodiment, the air pressure chamber 25 is disposed on the inner side of the boss 24, which can increase the rigidity and stability of the tire 2. During the moving process, the air pressure chamber 25 can provide additional support force, so that the boss 24 area maintains a better shape and stability, and reduces deformation and instability caused by lateral force.

[0036] The side of the groove 23 close to the air pressure chamber 25 is provided with an inner arc surface 231. In this embodiment, the provision of the inner arc surface 231 can increase the softness of the groove 23 area. The curved shape of the inner arc surface 231 makes the groove 23 area more flexible and can better adapt to the unevenness and changes of the road surface. At the same time, it also increases the structural rigidity and strength.

[0037] The air pressure chamber 25 is arranged in an L shape. In this embodiment, the L-shaped air pressure chamber 25 can increase the rigidity and stability of the tire 2. The L-shaped structure provides additional support, so that the tire 2 can better resist the lateral force and the steering force during driving, and increase the stability of the entire tire 2 system.

[0038] A mobile device. The mobile device in this embodiment is suitable for use in smart home devices, such as sweeping robots, etc., to ensure stability during driving and good drainage during cleaning.

[0039] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A hub motor, characterized in that: It includes a motor body and a tire, wherein the motor body is provided with a rotor shell, the tire is provided with a connecting cavity, the tire is provided on the rotor shell through the connecting cavity cover, and the motor body drives the tire to rotate through the rotation of the rotor shell; the outer periphery of the tire is provided with a tread portion, the tread portion includes protrusions evenly distributed on the outer periphery of the tire, the outer periphery of the tire is provided with a plurality of grooves, the plurality of grooves are evenly distributed on the outer periphery of the tire in a circumferential direction, a boss is provided between two adjacent grooves, and an air pressure cavity is provided on the inner side of the boss.

2. The hub motor according to claim 1, characterized in that: The motor body includes a base, a stator assembly, a rotor assembly, a rotating shaft assembly and an end cover. The base is arranged in the rotating shaft assembly and one end is rotatably connected to the rotor housing. The stator assembly is arranged on the outside of the base. The rotor assembly is arranged on the inner circumference of the rotor housing and is arranged opposite to the stator assembly. One end of the end cover is connected to one end of the rotor housing to form an accommodation cavity in the rotor housing. The stator assembly and the rotor assembly are both in the accommodation cavity.

3. The hub motor according to claim 1, characterized in that: The tire includes an inner ring portion and an outer ring portion. The outer ring portion is arranged on the outer periphery of the inner ring portion. The inner side surface of the inner ring portion is in contact with one side of the rotor housing.

4. The hub motor according to claim 3, characterized in that: A thickened portion is provided at the connection between the inner ring portion and the outer ring portion.

5. The hub motor according to claim 1, characterized in that: The tread portion is provided with a dividing groove, and the dividing groove is used to divide the tread portion into a first tread area and a second tread area, and the first tread area and the second tread area are both provided with a groove and a boss.

6. The wheel hub motor according to claim 5, characterized in that: The grooves on the first tread area are staggered with the grooves on the second tread area.

7. The hub motor according to claim 1, characterized in that: The air pressure chamber is arranged on the inner side of the boss and is close to the groove.

8. The hub motor according to claim 7, characterized in that: An inner arc surface is arranged on one side of the groove close to the air pressure chamber.

9. The wheel hub motor according to claim 8, characterized in that: The air pressure chamber is arranged in an L shape.

10. A mobile device, characterized in that: The invention comprises the hub motor as claimed in any one of claims 1 to 9.

Images