Hub driving system and vehicle

Abstract

The utility model belongs to the technical field of intelligent manufacturing, and particularly relates to a hub driving system and a vehicle. In the hub driving system, a power output part (1111) is arranged at one axial end of a power device (1), a fixed supporting part (121) is arranged at the other axial end of the power device (1), the axial inner end of a driving disc (21) is connected with the power output part (1111), the circumferential periphery of the driving disc (21) is higher than the power device (1), and a hub ring (3) is arranged on the circumferential outer portion of the power device (1) in a supporting and sleeving mode through a first bearing (31). And one axial end of the driving plate (21) is connected with the circumferential periphery of the driving plate (21). Thus, the power equipment (1) drives the hub ring (3) to rotate around the power equipment (1) in the circumferential direction by connecting the driving disc (21), and the connecting structure of the hub ring (3) is simple.

Description

Technical Field

[0001] This utility model belongs to the field of intelligent manufacturing technology, specifically relating to a hub drive system and a vehicle. Background Technology

[0002] Hub motors are used as power components in electric engineering vehicles. These vehicles have four wheels, each equipped with a hub motor, allowing for independent drive on all four wheels.

[0003] The hub motor is located inside the wheel hub and is integrated with the motor, reducer, and other mechanisms. The hub motor is directly embedded inside the wheel, and power transmission is achieved through the reduction gear. In existing technologies, the assembly structure of the hub motor and wheel hub is relatively complex. Utility Model Content

[0004] In view of this, the present invention aims to provide a hub drive system and vehicle with a simple structure.

[0005] In a first aspect, the present invention provides a hub drive system comprising a power unit, a drive disc, and a hub ring. The power unit has a power output section at one axial end and a fixed support section at the other axial end. The inner axial end of the drive disc is connected to the power output section, and its circumferential periphery is higher than that of the power unit. The hub ring is supported and sleeved on the circumferential outside of the power unit by a first bearing, and its axial end is connected to the circumferential periphery of the drive disc.

[0006] In this embodiment, the power device drives the wheel hub to rotate circumferentially around the power device by connecting a drive disc, and the connection structure of the wheel hub ring is simple.

[0007] In a preferred embodiment of the hub drive system of this example, the housing of the power equipment forms a limiting ring near the fixed support portion. The hub drive system also includes a flange ring, which is connected to one end of the hub ring near the fixed support portion, and together with the limiting ring, limits the first bearing in the axial direction.

[0008] In a preferred embodiment of the hub drive system of this example, a motor and a reduction gear are disposed within the housing of the power equipment. The inner rotor of the motor includes a magnet ring and a main shaft support. The main shaft support is connected to the inner bottom end of the magnet ring, and an axial space is formed between the top surface of the main shaft support and the top surface of the magnet ring. At least a portion of the reduction gear extends into the axial space, and its input end is connected to the main shaft support.

[0009] In a preferred embodiment of the hub drive system of this example, the main shaft support includes multiple bridge arms and a shaft sleeve, with the shaft sleeve connected to the interior of the magnet ring via the multiple bridge arms. The multiple bridge arms are located at the bottom end of the rotor's axial direction, and the thickness of the multiple bridge arms in the axial direction is shorter than the axial length of the rotor, thus forming the axial space between the bridge arms and the top end of the magnet ring.

[0010] In a preferred embodiment of the hub drive system of this example, the reduction device includes at least one planetary reducer, and the planet carrier of the planetary reducer forms the power output section.

[0011] In a preferred embodiment of the hub drive system of this example, the hub drive system further includes a drive shaft, on one axial side of which the input end of the reduction device is formed, and on the other axial side of which the sun gear of the planetary reducer is formed.

[0012] In a preferred embodiment of the hub drive system of this example, the hub drive system further includes a brake disc, a first cantilever, and a brake. The brake disc is mounted on the extended shaft of the drive disc; the first cantilever is connected to the extended shaft via a second bearing; the brake housing is connected to the first cantilever, and its two brake pads are located on opposite axial sides of the brake disc.

[0013] In a preferred embodiment of the hub drive system of this example, the hub drive system further includes a first washer and a first nut sleeve. The first washer is connected to the extended shaft and located at the outer end of the second bearing; the first nut sleeve is fitted onto the extended shaft and axially presses against the first washer.

[0014] In a preferred embodiment of the hub drive system of this example, the hub drive system further includes a flange seat, a second cantilever, a second washer, and a second nut sleeve. The flange seat is connected to the fixed support portion, and its axially extended portion has at least one limiting plane formed on its outer peripheral wall. One end of the second cantilever has a connecting hole, which is fitted onto the extended portion, and its inner wall engages with the limiting plane for limiting. The second washer is connected to the extended portion and located at the outer end of the connecting hole; the second nut sleeve is fitted onto the extended portion and axially presses against the second washer.

[0015] Secondly, in a vehicle provided by this utility model, the vehicle includes the hub drive system described in any embodiment of the first aspect. Attached Figure Description

[0016] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can more clearly understand the above and other features and advantages of the present invention, in which:

[0017] Figure 1 This is a schematic diagram of a preferred embodiment of the hub drive system in this example.

[0018] Figure 2 This is a first-view structural schematic diagram of the power unit in the hub drive system of this embodiment.

[0019] Figure 3 This is a second-view structural schematic diagram of the power unit in the hub drive system of this embodiment.

[0020] Figure 4 This is a schematic diagram of the braking mechanism in the hub drive system of this embodiment.

[0021] Figure 5 This is an exploded view of the power unit in the hub drive system of this embodiment.

[0022] Figure 6 This is a schematic diagram of the connection structure of the hub drive system in this embodiment.

[0023] The reference numerals in the attached figures are as follows:

[0024] 1-Power equipment; 11-Reduction gear; 111-Planetary carrier; 1111-Power output unit; 112-Drive shaft; 12-Main housing; 121-Fixed support; 122-Limit ring; 13-Motor; 131-Inner rotor; 1311-Magnetic ring; 1312-Main shaft support; 132-Outer stator; 133-Axial space;

[0025] 21-Drive disc; 22-Brake disc; 23-Extended shaft; 24-First cantilever; 25-Brake; 251-Brake pad; 26-First washer; 27-First nut sleeve;

[0026] 3-Hub ring; 31-First bearing; 32-Flange ring;

[0027] 41-Flange seat; 411-Limiting plane; 42-Second cantilever; 43-Second washer; 44-Second nut sleeve;

[0028] 5. Tires. Detailed Implementation

[0029] To make the objectives, technical solutions and advantages of this utility model clearer, the following embodiments are provided to further illustrate this utility model in detail.

[0030] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 application.

[0031] This embodiment provides a vehicle and a wheel hub drive system, wherein the vehicle can use at least one wheel hub drive system described in this embodiment. Preferably, all four wheel hub drive systems of the vehicle are selected as wheel hub drive systems described below in this embodiment.

[0032] Reference Figure 1 The hub drive system includes a power unit 1, a drive disc 21, and a hub ring 3. The power unit 1 has a power output section 1111 at one axial end, as shown in the figure. Figure 2 The power output section 1111 can be a hexagonal mounting slot. A fixed support section 121 is provided at the other end of the axial direction of the power device 1, in conjunction with... Figure 3 and Figure 5 The fixed support 121 can be an annular groove. The inner axial end of the drive disc 21 is connected to the power output part 1111, and its circumferential periphery is higher than that of the power device 1. For example, the drive disc 21 can be provided with a hexagonal shaft end that can be inserted into the hexagonal mounting groove of the power output part 1111. The hub ring 3 is supported and sleeved on the circumferential outside of the power device 1 by the first bearing 31, and one end of the hub ring 3 is connected to the circumferential periphery of the drive disc 21. For example, the circumferential periphery of the drive disc 21 is connected to the end face of the hub ring 3 by bolts. In this embodiment, the power device 1 drives the hub ring 3 to rotate around the circumferential of the power device 1 by connecting the drive disc 21, and the connection structure of the hub ring 3 is simple.

[0033] In a preferred embodiment of the hub drive system of this example, combined with Figure 1 and Figure 4 The hub drive system also includes a brake disc 22, a first cantilever 24, and a brake 25. The brake disc 22 is mounted on the extended shaft 23 of the drive disc 21. For example, a mounting flange is provided on the extended shaft 23 of the drive disc 21, and the brake disc 22 is bolted to this mounting flange. Alternatively, the brake disc 22 can be integrally formed with the extended shaft 23 of the drive disc 21. The first cantilever 24 is connected to the extended shaft 23 via a second bearing. The housing of the brake 25 is connected to the first cantilever 24, and the two brake pads 251 of the brake 25 are located on opposite axial sides of the brake disc 22.

[0034] Thus, the brake 25 is installed externally relative to the power unit 1, which makes the structure of the power unit 1 more compact and facilitates the maintenance of the brake 25 compared to placing the holding brake inside the power unit 1. In this embodiment, when the brake pedal is pressed, the brake fluid in the master cylinder enters the brake 25, and the piston of the brake 25 moves outward under the action of oil pressure. The two brake pads 251 press the brake disc 22 together and perform the braking effect.

[0035] For example, combined Figure 1 and Figure 4 The hub drive system also includes a first washer 26 and a first nut sleeve 27. The first washer 26 is connected to the extended shaft 23 and located at the outer end of the second bearing. The first nut sleeve 27 is fitted onto the extended shaft 23 and presses the first washer 26 axially. Thus, the installation of the braking structure of the hub drive system is simple.

[0036] Continue to refer to Figure 1 , refer to Figure 1 and Figure 3 and Figure 6 The hub drive system also includes a flange seat 41, a second cantilever 42, a second washer 43, and a second nut sleeve 44. The flange seat 41 is connected to the fixed support portion 121, and its axially extended portion has at least one limiting plane 411 formed on its outer peripheral wall. One end of the second cantilever 42 has a connecting hole, which fits onto the extended portion, and its inner wall cooperates with the limiting plane 411 for limiting. The second washer 43 is connected to the extended portion and located at the outer end of the connecting hole. The second nut sleeve 44 is fitted onto the extended portion and axially presses against the second washer 43. This achieves the connection between the second suspension and the power unit 1. In this embodiment, the first cantilever 24 and the second cantilever 42 are components of the suspension, and the hub ring 3 and the tire 5 outside the hub ring 3 rotate relative to the suspension.

[0037] In a preferred embodiment of the hub drive system of this example, combined with Figure 5 and Figure 6 The housing of the power unit 1 has a limiting ring 122 near the fixed support 121. The hub drive system also includes a flange ring 32, which is connected to one end of the hub ring 3 near the fixed support 121, and together with the limiting ring 122, it limits the first bearing 31 axially. For example, the housing may consist of a main housing 12 and a flange.

[0038] In a preferred embodiment of the hub drive system of this example, combined with Figure 5The power equipment 1 houses a motor 13 and a reduction gear 11. The motor 13 includes an inner rotor 131 and an outer stator 132. The inner rotor 131 includes a magnet ring 1311 and a main shaft support 1312. The main shaft support 1312 is connected to the inner bottom end of the magnet ring 1311, and an axial space 133 is formed between the top surface of the main shaft support 1312 and the top surface of the magnet ring 1311. At least a portion of the reduction gear 11 extends into the axial space 133, and the input end of the reduction gear 11 is connected to the main shaft support 1312.

[0039] Continue to refer to Figure 5 In this embodiment, the main shaft support 1312 of the motor 13 includes multiple bridge arms and a shaft sleeve, with the shaft sleeve connected to the interior of the magnet ring 1311 via the multiple bridge arms. The multiple bridge arms are located at the bottom end of the rotor's axial direction, and the thickness of the multiple bridge arms in the axial direction is shorter than the axial length of the rotor, thus forming an axial space 133 between the bridge arms and the top end of the magnet ring 1311, into which at least a portion of the speed reduction device 11 extends.

[0040] In a preferred embodiment of the hub drive system of this example, reference continues to be made to... Figure 5 The hub drive system also includes a drive shaft 112. The input end of a reduction gear 11 is formed on one axial side of the drive shaft 112, and the sun gear of a planetary reducer is formed on the other axial side. This sun gear can mesh with the planet gears of a planetary reducer. This achieves the connection and power transmission between the motor 13 and the reduction gear 11. Exemplarily, the end of the drive shaft 112 can extend into a shaft sleeve, and the outer wall of the end is keyed to the inner wall of the shaft sleeve.

[0041] In a preferred embodiment of the hub drive system of this example, reference continues to be made to... Figure 5 The reduction gear 11 includes at least one planetary reducer, meaning it can perform first-stage reduction using one planetary reducer or second-stage reduction using two planetary reducers. In this embodiment, the planet carrier 111 of the first-stage planetary reducer is connected to the sun gear of the second-stage planetary reducer, and the planet carrier 111 of the second-stage planetary reducer forms the power output section 1111 of the power device 1.

[0042] It should be understood that although this specification is described according to various embodiments, not every embodiment or implementation method contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0043] The above descriptions are merely illustrative embodiments of this application and are not intended to limit the scope of the embodiments of this application. Any equivalent changes, modifications, and combinations made by those skilled in the art without departing from the concept and principles of the embodiments of this application should fall within the protection scope of the embodiments of this application.

Claims

1. A wheel hub drive system, characterized by The application relates to a power device (1) which is provided with a power output (1111) at one axial end and a fixed support (121) at the other axial end. A driving disc (21) is connected to the power output (1111) at the inner axial end and has a higher peripheral edge than the power device (1). A hub ring (3) is supported by a first bearing (31) on the outer periphery of the power device (1) and is connected to the peripheral edge of the driving disc (21) at one axial end. The housing of the power device (1) is provided with a limiting ring (122) near the fixed support (121), and the hub driving system further comprises a flange ring (32) which is connected to one end of the hub ring (3) near the fixed support (121) and cooperates with the limiting ring (122) to limit the first bearing (31) in the axial direction.

2. The hub drive system of claim 1, wherein, The housing of the power device (1) is provided with a motor (13) whose inner rotor (131) comprises a magnet ring (1311) and a main shaft support (1312) which is connected to the inner bottom end of the magnet ring (1311) and forms an axial space (133) between the top surface of the main shaft support (1312) and the top surface of the magnet ring (1311). A speed reduction device (11) is at least partially inserted into the axial space (133) and is connected to the main shaft support (1312) at the input end.

3. The hub drive system of claim 1, wherein, The main shaft support (1312) comprises a plurality of bridge arms and a shaft cylinder which is connected to the inner part of the magnet ring (1311) through the plurality of bridge arms; wherein the plurality of bridge arms are located at the bottom end of the rotor in the axial direction and have a thickness shorter than the axial length of the rotor in the axial direction, so that the axial space (133) is formed between the bridge arms and the top end of the magnet ring (1311). The speed reduction device (11) comprises at least one planetary reducer whose planet carrier (111) forms the power output (1111). Further comprising a transmission shaft (112) which is provided with the input end of the speed reduction device (11) at one axial side and is provided with a sun gear of the planetary reducer at the other axial side.

4. The hub drive system of claim 3, wherein, Further comprising a brake disc (22) which is arranged on an outer extension shaft (23) of the driving disc (21); 5. The hub drive system of claim 3, wherein, A first cantilever (24) is connected to the outer extension shaft (23) through a second bearing; A brake (25) is connected to the first cantilever (24) and has two brake pads (251) which are respectively located at the two axial sides of the brake disc (22).

6. The hub drive system of claim 3, wherein, Further comprising a first gasket (26) which is connected to the outer extension shaft (23) and is located at the outer end of the second bearing; A first nut sleeve (27) is sleeved on the outer extension shaft (23) and presses the first gasket (26) in the axial direction.

7. The hub drive system of claim 1, wherein, Further comprising a flange seat (41) which is connected to the fixed support (121) and has at least one limiting plane (411) on the outer peripheral wall of the axial extension part. ​ ​ ​ 8. The hub drive system of claim 7, wherein, ​ ​ ​ 9. The hub drive system of claim 1, wherein, ​ ​ A second cantilever (42) is formed with a connecting hole at one end, the connecting hole is sleeved on the overhanging part and the inner wall cooperates with the limiting plane (411) to limit; A second gasket (43) is connected on the overhanging part and located at the outer end of the connecting hole; A second nut sleeve (44) is sleeved on the overhanging part and axially presses the second gasket (43).

10. A vehicle characterized by comprising: The hub drive system according to any one of claims 1 to 9. The hub drive system according to any one of claims 1 to 9.

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