Hub motor angle module assembly for vehicle

Abstract

The utility model discloses a vehicle wheel hub motor angle module assembly, which comprises a wheel assembly, a wheel hub motor assembly and a main pin steering gear, the wheel hub motor assembly comprises a wheel hub motor, a steering knuckle and a wheel hub bearing, a wheel hub motor rotor of the wheel hub motor is used for being connected with the wheel assembly, the wheel hub motor rotor is connected with the steering knuckle through the wheel hub bearing, and the main pin steering gear is connected with the wheel assembly. The steering knuckle is fixedly connected with a hub motor stator of the hub motor, and the side, away from the wheel assembly, of the steering knuckle is connected with a main pin steering gear. The steering knuckle and other structures are arranged, so that the axial occupied size is reduced, the axis of the main pin is closer to the wheel assembly, the intersection point of the extension line of the main pin and the ground is closer to the grounding point of the wheel assembly, and the offset distance of the main pin is greatly reduced; various forces and torques borne by the tire are transmitted to a suspension system through a tire-hub bearing-knuckle path, so that the reliability, the integration level and the bearing capacity of the structure can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle wheel hub motor angle module configuration, in particular to a vehicle wheel hub motor angle module assembly. Background Art

[0002] As a highly integrated core component, in-wheel motor angle modules play a vital role in new energy vehicles and drive-by-wire chassis vehicles. With advancements in drive-by-wire chassis technology, domestic and international vehicle and parts manufacturers are continuously releasing in-wheel motor prototypes and vehicles, driving the development of in-wheel motor technology towards modularization, integration, and lightweighting.

[0003] The key feature of in-wheel motor modules is their ability to integrate drive, transmission, and braking into the wheel hub, enabling each wheel to independently control drive, braking, steering, and suspension functions. This technology not only improves overall vehicle performance and energy efficiency but also enables more optimized distributed drive systems for new energy vehicles and drive-by-wire chassis vehicles.

[0004] However, there are currently many ways or styles of configuring automotive hub motor corner modules, but the existing technology mostly adopts a solution in which the hub motor back plate and the steering knuckle are superimposed, and its axial dimension is too large, resulting in problems such as large kingpin offset and low integration of the hub motor and the braking system.

[0005] Therefore, there is an urgent need for a vehicle hub motor angle module assembly to solve the problem that the axial dimension of the structure with the hub motor back plate and the steering knuckle superimposed is too large, resulting in a large kingpin offset. Utility Model Content

[0006] In response to the deficiencies in the prior art, the utility model provides a vehicle wheel hub motor angle module assembly to solve the problem that the axial dimension of the structure in which the wheel hub motor back plate and the steering knuckle are superimposed is too large, resulting in a large kingpin offset.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A vehicle hub motor angle module assembly is characterized by comprising a wheel assembly, a hub motor assembly and a kingpin steering gear, wherein the hub motor assembly comprises a hub motor, a steering knuckle and a hub bearing, the hub motor rotor of the hub motor is used to connect to the wheel assembly, the hub motor rotor is connected to the steering knuckle via the hub bearing, and the steering knuckle is fixedly connected to the hub motor stator of the hub motor, and the kingpin steering gear for driving the steering knuckle to rotate is connected to the side of the steering knuckle away from the wheel assembly.

[0009] To optimize the above technical solutions, specific measures taken also include:

[0010] Furthermore, the hub motor assembly also includes a brake and a brake disc. The brake disc is assembled on the side of the hub motor rotor close to the steering knuckle. The brake is installed on the steering knuckle. The brake is used to clamp or release the brake disc.

[0011] Furthermore, the brake disc is assembled and connected to the outer sides of the hub motor rotor and the hub bearing.

[0012] Furthermore, the kingpin steering gear includes a steering motor and a kingpin steering gear support, an upper mounting seat is provided at the upper end of the steering knuckle away from the wheel assembly, an upper mounting seat is provided on the upper mounting seat, the steering motor is installed on the kingpin steering gear support, and the output end of the steering motor is connected to the upper mounting hole.

[0013] Furthermore, the kingpin steering gear also includes a planetary reducer, the steering motor is connected to the planetary reducer, the planetary reducer is installed on the kingpin steering gear support, and the output end of the planetary reducer is connected to the upper mounting hole.

[0014] Furthermore, it also includes a suspension assembly, which includes an upper cross arm and a lower cross arm, the lower end of the steering knuckle is provided with a lower mounting seat, the lower mounting seat is provided with a lower mounting hole, one end of the upper cross arm is connected to the kingpin steering gear support, and the other end of the upper cross arm is used to connect to the frame, one end of the lower cross arm is connected to the lower mounting hole, and the other end of the lower cross arm is used to connect to the frame.

[0015] Furthermore, the suspension assembly also includes an air spring, the movable end of the air spring is connected to the lower cross arm, and the kingpin deflector support is connected to the end of the upper cross arm through two connecting ends surrounding the outer side of the air spring.

[0016] Furthermore, the wheel assembly includes a tire and a rim, the hub motor rotor is assembled and connected to the rim, and the tire is sleeved on the outside of the rim.

[0017] The beneficial effects of the utility model are:

[0018] The present invention, through the arrangement of structures such as the steering knuckle, is compared with the traditional outer rotor hub motor. The traditional motor back plate used to fix the hub motor stator and hub bearing is integrated with the steering knuckle structure responsible for the steering function in terms of function and overall structure, thereby obtaining the arrangement of the steering knuckle in this scheme, so as to reduce the axial occupied size, so that the kingpin axis is closer to the wheel assembly, and then the intersection of the kingpin extension line and the ground is closer to the grounding point of the wheel assembly, which greatly reduces the kingpin offset. In addition, the various forces and moments acting on the tire are transmitted to the suspension system through the tire-hub bearing-steering knuckle path, which can improve the reliability, integration and load-bearing capacity of the structure.

[0019] The utility model innovatively arranges the air spring between the kingpin steering gear support and the upper cross arm, so that the air spring installation point is close to the wheel assembly. Compared with the existing hub motor angle module, the suspension transfer ratio is larger and the vibration reduction effect is better. At the same time, due to the introduction of the variable damper in the air spring, the negative effect caused by the large unsprung mass of the hub motor angle module can be greatly reduced, making the driving smoothness and anti-roll performance better.

[0020] The utility model proposes a vehicle hub motor angle module assembly that integrates drive, braking, steering, and suspension, which can realize various movement modes of the chassis, such as front-wheel steering, four-wheel steering, oblique driving, sideways driving, on-the-spot U-turn, fulcrum steering, etc., and solves the problems of difficult layout and low integration of the steering system, braking system, and suspension system. In addition, compared with the existing hub motor angle module assembly, the utility model innovatively proposes to integrate the hub motor back plate and the steering knuckle, and the highly integrated structure of the braking system and the hub motor, which significantly improves the overall system integration and greatly reduces the kingpin offset. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of a vehicle hub motor angle module assembly proposed by the present utility model;

[0022] Figure 2 This is a disassembled schematic diagram of a vehicle hub motor angle module assembly proposed in the present utility model;

[0023] Figure 3 This is a schematic diagram of the disassembly of the hub motor component of the vehicle hub motor angle module assembly proposed in the utility model.

[0024] Figure numerals: 1. tire; 2. rim; 3. hub motor rotor; 4. hub bearing; 5. steering knuckle; 6. brake; 7. brake disc; 8. hub motor stator; 9. steering motor; 10. planetary reducer; 11. kingpin steering gear support; 12. air spring; 13. upper cross arm; 14. bushing; 15. lower cross arm. DETAILED DESCRIPTION

[0025] The utility model is described in detail below with reference to the accompanying drawings.

[0026] As attached Figure 1 , Attachment Figure 2 and attached Figure 3As shown, an embodiment of the present invention is a vehicle hub motor angle module assembly, including a wheel assembly, a hub motor assembly and a kingpin steering gear. The hub motor assembly includes a hub motor, a steering knuckle 5 and a hub bearing 4. The hub motor rotor 3 of the hub motor is used to connect to the wheel assembly. The center of the hub motor rotor 3 is connected to the central through hole of the steering knuckle 5 through the hub bearing 4, and the side of the steering knuckle 5 is fixedly connected to the hub motor stator 8 of the hub motor. The side of the steering knuckle 5 away from the wheel assembly is connected to the kingpin steering gear for driving the steering knuckle 5 to rotate.

[0027] By arranging structures such as the steering knuckle 5, the present invention is compared with the traditional outer rotor hub motor. The traditional motor back plate for fixing the hub motor stator 8 and the hub bearing 4 is integrated with the steering knuckle structure responsible for the steering function in terms of function and overall structure. The arrangement of the steering knuckle 5 in the present solution is obtained to reduce the axial occupied size, so that the kingpin axis is closer to the wheel assembly, and then the intersection of the kingpin extension line and the ground is closer to the grounding point of the wheel assembly, which greatly reduces the kingpin offset. In addition, the various forces and moments acting on the tire 1 are transmitted to the suspension system through the tire 1-hub bearing 4-steering knuckle 5 path, which can improve the reliability, integration and load-bearing capacity of the structure.

[0028] In another specific embodiment based on the above, the in-wheel motor assembly further includes a brake 6 and a brake disc 7. The brake disc 7, which does not contact the steering knuckle 5, is mounted on the side of the in-wheel motor rotor 3 near the steering knuckle 5. The brake 6 is mounted on the steering knuckle 5 and is used to clamp or release the brake disc 7. Thus, the provision of the brake 6 and brake disc 7 can enhance the braking effect of the device.

[0029] In a further specific embodiment, the brake disc 7 is assembled and connected to the outer sides of the hub motor rotor 3 and the hub bearing 4. This can increase the stability of the structure.

[0030] In another specific embodiment, the kingpin steering gear includes a steering motor 9 and a kingpin steering gear support 11. An upper mounting seat is provided at the upper end of the steering knuckle 5 away from the wheel assembly, and an upper mounting hole is provided on the upper mounting seat. The steering motor 9 is installed on the kingpin steering gear support 11, and the output end of the steering motor 9 is connected to the upper mounting hole for driving the steering knuckle 5 to rotate.

[0031] In a further specific embodiment, the kingpin steering gear also includes a planetary reducer 10, the output end of the steering motor 9 is connected to the planetary reducer 10, the planetary reducer 10 is installed on the kingpin steering gear support 11, and the output end of the planetary reducer 10 is connected to the upper mounting hole.

[0032] In a further specific embodiment, a suspension assembly is further included, comprising an upper cross arm 13 and a lower cross arm 15. A lower mounting seat is provided at the lower end of the steering knuckle 5, distal from the wheel assembly. The lower mounting seat has a lower mounting hole. One end of the upper cross arm 13 is connected to the kingpin steering gear support 11, and the other end of the upper cross arm 13 is used to connect to the vehicle frame. One end of the lower cross arm 15 is connected to the lower mounting hole, and the other end of the lower cross arm 15 is used to connect to the vehicle frame. In this embodiment, as described above, a bushing 14 is provided as required at the end of the upper cross arm 13 distal from the kingpin steering gear support 11.

[0033] In a further specific embodiment based on the above, the suspension assembly further includes an air spring 12, the movable end of which is connected to the lower cross arm 15, and the kingpin deflector support 11 and the end of the upper cross arm 13 are connected via two connecting ends that surround the outer side of the air spring 12. In this embodiment, the annular structure at the connection between the kingpin deflector support 11 and the upper cross arm 13 allows the air spring 12 to move without contacting the air spring 12.

[0034] In this solution, the air spring 12 is innovatively arranged between the kingpin steering gear support 11 and the upper cross arm 13, so that the installation point of the air spring 12 is close to the wheel assembly. Compared with the existing hub motor angle module, the suspension transfer ratio is larger and the vibration reduction effect is better. At the same time, due to the introduction of the variable damper in the air spring 12, the negative effects caused by the large unsprung mass of the hub motor angle module can be greatly reduced, making the driving smoothness and anti-roll performance better.

[0035] In another specific embodiment, the wheel assembly includes a tire 1 and a rim 2 , the hub motor rotor 3 is assembled and connected to the rim 2 , and the tire 1 is sleeved on the outside of the rim 2 .

[0036] The present invention proposes a vehicle-use wheel hub motor angle module assembly that integrates driving, braking, steering, and suspension, which can realize various movement modes of the chassis, such as front-wheel steering, four-wheel steering, oblique driving, sideways driving, on-the-spot U-turn, fulcrum steering, etc., and solves the problems of difficult layout and low integration of the steering system, braking system, and suspension system. In addition, compared with the existing wheel hub motor angle module assembly, the present invention innovatively proposes to integrate the wheel hub motor back plate with the steering knuckle, and the highly integrated structure of the braking system and the wheel hub motor, which significantly improves the overall system integration and greatly reduces the kingpin offset.

[0037] It should be noted that the terms such as "upper", "lower", "left", "right", "front", "back", etc. used in the utility model are only for the convenience of description and are not used to limit the scope of implementation of the utility model. Changes or adjustments to their relative relationships should also be regarded as the scope of implementation of the utility model without substantially changing the technical content.

[0038] The above are only preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be pointed out that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A vehicle wheel hub motor angle module assembly, characterized by: The invention comprises a wheel assembly, a hub motor assembly and a kingpin steering gear, wherein the hub motor assembly comprises a hub motor, a steering knuckle (5) and a hub bearing (4), a hub motor rotor (3) of the hub motor is used to connect to the wheel assembly, the hub motor rotor (3) is connected to the steering knuckle (5) via the hub bearing (4), and the steering knuckle (5) is fixedly connected to the hub motor stator (8) of the hub motor, and the kingpin steering gear for driving the steering knuckle (5) to rotate is connected to the side of the steering knuckle (5) away from the wheel assembly.

2. The vehicle hub motor angle module assembly according to claim 1, characterized in that: The wheel hub motor assembly further comprises a brake (6) and a brake disc (7), wherein the brake disc (7) is mounted on a side of the wheel hub motor rotor (3) close to the steering knuckle (5), and the brake (6) is mounted on the steering knuckle (5), and the brake (6) is used to clamp or release the brake disc (7).

3. The vehicle hub motor angle module assembly according to claim 2, characterized in that: The brake disc (7) is assembled and connected to the outer sides of the hub motor rotor (3) and the hub bearing (4).

4. The vehicle hub motor angle module assembly according to claim 1, characterized in that: The kingpin steering gear comprises a steering motor (9) and a kingpin steering gear support (11); an upper mounting seat is provided at the upper end of the steering knuckle (5) away from the wheel assembly; an upper mounting seat is provided on the upper mounting seat; the steering motor (9) is mounted on the kingpin steering gear support (11); and an output end of the steering motor (9) is connected to the upper mounting hole.

5. The vehicle hub motor angle module assembly according to claim 4, characterized in that: The kingpin steering gear further comprises a planetary reducer (10), the steering motor (9) is connected to the planetary reducer (10), the planetary reducer (10) is mounted on the kingpin steering gear support (11), and the output end of the planetary reducer (10) is connected to the upper mounting hole.

6. The vehicle hub motor angle module assembly according to claim 4, characterized in that: The invention also includes a suspension assembly, wherein the suspension assembly includes an upper cross arm (13) and a lower cross arm (15), the lower end of the steering knuckle (5) is provided with a lower mounting seat, the lower mounting seat is provided with a lower mounting hole, one end of the upper cross arm (13) is connected to the kingpin steering gear support (11), and the other end of the upper cross arm (13) is used to connect to the vehicle frame, one end of the lower cross arm (15) is connected to the lower mounting hole, and the other end of the lower cross arm (15) is used to connect to the vehicle frame.

7. The vehicle wheel hub motor angle module assembly according to claim 6, characterized in that: The suspension assembly further comprises an air spring (12), the movable end of the air spring (12) being connected to the lower transverse arm (15), and the kingpin steering gear support (11) and the end of the upper transverse arm (13) being connected via two connecting ends surrounding the outer side of the air spring (12).

8. The vehicle wheel hub motor angle module assembly according to claim 1, characterized in that: The wheel assembly comprises a tire (1) and a rim (2); the hub motor rotor (3) is assembled and connected to the rim (2); and the tire (1) is sleeved on the outside of the rim (2).

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