A drive steering integrated electric wheel assembly

Abstract

The application discloses a drive and steering integrated electric wheel assembly, which comprises a wheel assembly, a brake, a steering drive assembly and a cantilever support, wherein the wheel assembly comprises a wheel hub, a hub motor rotor assembled with the wheel hub and a hub motor stator through shaft vertically installed at the central position of the wheel hub; the brake comprises a friction plate and a brake disc integratedly installed on the hub motor rotor; the steering drive assembly comprises a steering knuckle integratedly installed with the brake, a steering drive mechanism for driving the steering knuckle to rotate and a steering support for fixing the steering drive mechanism; and the cantilever support is assembled on the steering drive assembly. The drive and steering integrated electric wheel assembly solves the problems of difficult arrangement of the steering system, the brake and the suspension and low integration degree.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric wheel structure, in particular to a driving and steering integrated electric wheel assembly. BACKGROUND

[0002] The electric wheel driven automobile is a kind of automobile directly driven by the motor built in the wheel hub, which simplifies the transmission, differential and other parts in the traditional automobile, and directly transmits driving force to the wheel, so that the space utilization and transmission efficiency of the vehicle are greatly improved. The electric wheel driving has become an important direction for the development of the next generation electric vehicle driving system, and the electric wheel as the key assembly of the electric wheel driving technology has important research significance.

[0003] The hub motor is integrated in the wheel, which causes the difficulty in arranging the in-wheel brake. The steering knuckle, motor and hub of the traditional electric wheel are independent structures, and the brake, motor and hub are coaxially arranged side by side, which causes the axial size of the assembly formed by the steering knuckle, brake and hub motor to be large, obviously increases the tire offset, and deteriorates the vehicle stability, and at the same time makes the suspension arrangement difficult under the wheel spacing limit condition. SUMMARY

[0004] This section is intended to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the title of the application in order to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions cannot be used to limit the scope of the present application.

[0005] Therefore, the purpose of the present application is to provide a driving and steering integrated electric wheel assembly to solve the problems of difficult arrangement of steering system, brake and suspension and low integration degree.

[0006] In order to solve the above technical problems, according to one aspect of the present application, the present application provides the following technical scheme:

[0007] A driving and steering integrated electric wheel assembly, comprising:

[0008] A wheel assembly comprising a wheel hub, a hub motor rotor assembled with the wheel hub and a hub motor stator through shaft vertically installed at the center position of the wheel hub;

[0009] A brake comprising a friction plate and a brake disc integrally installed on the hub motor rotor;

[0010] A steering and driving assembly comprising a steering knuckle integrally installed with the brake, a steering driving mechanism driving the steering knuckle to rotate and a steering support fixedly connecting the steering driving mechanism;

[0011] A cantilever support is assembled on the steering drive assembly.

[0012] As a preferred scheme of the integrated electric wheel assembly of the application, the wheel assembly further comprises a tire arranged on the wheel hub.

[0013] As a preferred scheme of the integrated electric wheel assembly of the application, the steering drive mechanism comprises a steering motor, a speed reducer connected with the output end of the steering motor, and the output end of the speed reducer is connected with the steering knuckle.

[0014] As a preferred scheme of the integrated electric wheel assembly of the application, the steering knuckle has a recessed slot and a connecting protrusion.

[0015] The brake has a clamping block matched with the recessed slot and a butt joint matched with the connecting protrusion.

[0016] The clamping block is embedded in the recessed slot and fixed by bolts, and the connecting protrusion is matched with the butt joint and fixed by bolts.

[0017] As a preferred scheme of the integrated electric wheel assembly of the application, the cantilever support comprises an upper cantilever support hinged with the steering support and downward rotatable relative to the cantilever support, a lower cantilever support horizontally rotatable with the steering knuckle, and a shock absorber and spring assembly hinged with the lower cantilever support.

[0018] As a preferred scheme of the integrated electric wheel assembly of the application, the bottom end of the steering knuckle has a bent hook part, and the lower cantilever support has a ball head connected with the hook part.

[0019] As a preferred scheme of the integrated electric wheel assembly of the application, the steering support has a first hinged lug, the upper cantilever support has a second hinged lug, and the first hinged lug and the second hinged lug are rotationally connected.

[0020] Compared with the prior art, the application has the beneficial effects that:

[0021] 1. The integrated electric wheel assembly of the application has the advantages of small quality, small occupied space and high integration by integrating the wheel hub motor, the brake, the steering device and the wheel together.

[0022] 2. The drive and steering integrated electric wheel assembly provided by the present application integrates the wheel hub, the motor rotor and the brake disc into one, thereby eliminating the motor rotor support member and greatly reducing the mass and axial space occupation of the electric wheel device.

[0023] 3. The drive and steering integrated electric wheel assembly provided by the present application arranges the brake on the steering knuckle, thereby reducing the axial space occupation of the brake device and facilitating the arrangement of the suspension system and the steering system. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the present application will be described in detail below with reference to the drawings and detailed embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Among them:

[0025] Figure 1 The explosion view of the drive and steering integrated electric wheel assembly provided by the present application;

[0026] Figure 2 The assembly view of the steering device, the steering knuckle and the suspension provided by the present application;

[0027] Figure 3 The assembly view of the steering motor, the speed reducer and the steering knuckle provided by the present application;

[0028] Figure 4 The assembly view of the steering knuckle and the brake provided by the present application;

[0029] Figure 5 The assembly view of the integrated wheel hub motor and the steering knuckle provided by the present application;

[0030] Figure 6 The structural schematic view of the wheel assembly provided by the present application. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0032] Secondly, the present application is described in detail in combination with the schematic view. In the detailed description of the embodiments of the present application, the sectional view of the device structure will be partially enlarged without general proportion for the convenience of description, and the schematic view is only an example, which should not limit the scope of protection of the present application. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in the actual manufacture.

[0033] In order to make the purpose, technical scheme and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0034] The present application provides a drive steering integrated electric wheel assembly, which solves the problems of difficult arrangement of steering system, brake and suspension and low integration.

[0035] Figures 1-6 The present application provides a drive steering integrated electric wheel assembly, which solves the problems of difficult arrangement of steering system, brake and suspension and low integration. Figures 1-5 The drive steering integrated electric wheel assembly of the present embodiment comprises a wheel assembly 100, a brake 200, a steering drive assembly 300 and a suspension support 400.

[0036] The wheel assembly 100 comprises a wheel hub 110, a hub motor rotor 120 assembled with the wheel hub 110 and a hub motor stator through shaft 130 vertically installed at the center of the wheel hub 110. When walking, the hub motor rotor 120 is subjected to the action force of the stator magnetic field to generate a driving torque, and rotates around the hub motor stator through shaft 130. In the present embodiment, the wheel assembly 100 further comprises a tire 140 arranged on the wheel hub 110.

[0037] The brake 200 is used to generate braking torque on the wheel hub 110. The brake 200 comprises a friction plate 210 and a brake disc 220 integratedly installed on the hub motor rotor 120. The brake 200 generates braking torque by pressing the brake disc 220 with the friction plate 210, so as to generate braking torque. The brake disc 220 transmits the braking torque to the hub motor rotor 120 and the wheel hub 110, so as to realize vehicle braking.

[0038] The steering drive assembly 300 is used to drive the steering of the wheel hub 110, in the embodiment, the steering drive assembly 300 includes a steering knuckle 310 integrated with the brake 200, a steering drive mechanism 320 driving the rotation of the steering knuckle 210, and a steering support 330 fixing the steering drive mechanism 320, the steering drive mechanism 320 includes a steering motor 320a, a reducer 320b connected with the output end of the steering motor 320a, and the output end of the reducer 320b is connected with the steering knuckle 310, when the steering motor 320a operates, the steering motor 320a transmits power to the reducer 320b, the output shaft of the reducer 320b drives the steering knuckle 310 to rotate, and in turn drives the brake 200 and the wheel assembly 100 to rotate synchronously, in the embodiment, the specific connection relationship between the steering knuckle 310 and the brake 200 is that the steering knuckle 310 has a recessed groove 310a and a connecting protrusion 310b, the brake 200 has a clamping block 200a matched with the recessed groove 310a and a butt joint portion 200b matched with the connecting protrusion 310b, the clamping block 200a is embedded in the recessed groove 310a and fixed by bolts, and the connecting protrusion 310b is matched with the butt joint portion 200b and fixed by bolts.

[0039] The cantilever support 400 is assembled on the steering drive assembly 300 and is used to realize damping, in the embodiment, the cantilever support 400 includes a cantilever upper support 410 hinged with the steering support 330 and downward rotatable relative to the cantilever support 400, a cantilever lower support 420 horizontally rotatable with the steering knuckle 210, and a shock absorber and spring assembly 430 hinged with the cantilever lower support 420, the bottom end of the steering knuckle 310 has a bent hook portion 310c, the cantilever lower support 420 has a ball head 420a connected with the hook portion 310c, the steering support 330 has a first hinged lug 330a, the cantilever upper support 410 has a second hinged lug 410a, the first hinged lug 330a and the second hinged lug 410a are rotationally connected, when the wheel jumps, the steering knuckle 210 jumps with the wheel, drives the steering support 330 to jump, the cantilever upper support 410 and the cantilever lower support 420 swing with the steering support 330 and the steering knuckle 310, and the cantilever lower support 420 compresses the shock absorber and spring assembly 430.

[0040] Please refer to Figures 1-6 The specific action process of the driving and steering integrated electric wheel assembly of the embodiment is as follows:

[0041] When the wheel assembly 100 turns, the steering knuckle 210 is driven to rotate by the reducer 320b, and the wheel assembly 100 is driven to rotate by the steering knuckle 210, so as to realize the steering of the wheel assembly 100. When driving, the wheel motor rotor 120 is driven to rotate around the wheel motor stator through force generated by the stator magnetic field, and the wheel motor stator penetrates the shaft 130 to transmit the driving torque to the steering knuckle 310, and the steering knuckle 310 transmits the driving torque to the vehicle body through the suspension. When braking, there are two ways to achieve it. One is that the brake 200 compresses the brake disc 220 to generate a braking torque, and the brake disc 220 transmits the braking torque to the wheel motor rotor 120 and the wheel hub 110 to realize vehicle braking. The second is that the wheel motor rotor 120 applies an electromagnetic force to the stator to generate a braking torque opposite to the driving torque, so as to realize vehicle braking. The wheel motor stator penetrates the shaft 130 to transmit the braking torque to the steering knuckle 210, and then to the vehicle body.

[0042] Although the present application has been described with reference to the embodiments above, various changes and modifications can be made without departing from the scope of the present application. In particular, the features of the disclosed embodiments can be used in any combination without departing from the scope of the present application, and the combinations of these features are not exhaustively described in the specification only for the purpose of saving space and resources. Therefore, the present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An electric wheel assembly integrating drive and steering, characterized in that, The application relates to a wheel assembly (100) comprising a wheel hub (110), a wheel hub motor rotor (120) assembled with the wheel hub (110) and a wheel hub motor stator through shaft (130) vertically installed at the center of the wheel hub (110); a brake (200) comprising a friction plate (210) and a brake disc (220) integrally installed on the wheel hub motor rotor (120); a steering drive assembly (300) comprising a steering knuckle (310) integrally installed with the brake (200), a steering drive mechanism (320) driving the steering knuckle (310) to rotate and a steering support (330) fixing the steering drive mechanism (320); and a cantilever support (400) assembled on the steering drive assembly (300). The steering knuckle (310) has a recessed slot (310a) and a connecting protrusion (310b); the brake (200) has a clamping block (200a) matched with the recessed slot (310a) and a butt joint part (200b) matched with the connecting protrusion (310b); the clamping block (200a) is embedded in the recessed slot (310a) and fixed by bolts, and the connecting protrusion (310b) is matched with the butt joint part (200b) and fixed by bolts. The wheel assembly (100) further comprises a tire (140) arranged on the wheel hub (110). The steering drive mechanism (320) comprises a steering motor (320a) and a speed reducer (320b) connected with the output end of the steering motor (320a), and the output end of the speed reducer (320b) is connected with the steering knuckle (310). The cantilever support (400) comprises an upper cantilever support (410) hinged with the steering support (330) and downward rotatable relative to the cantilever support (400), a lower cantilever support (420) horizontally rotatable with the steering knuckle (210) and a shock absorber and spring assembly (430) hinged with the lower cantilever support (420). The bottom end of the steering knuckle (310) has a bent hook part (310c), the lower cantilever support (420) has a ball head (420a), and the ball head (420a) is connected with the hook part (310c). The steering support (330) has a first hinged lug (330a), the upper cantilever support (410) has a second hinged lug (410a), and the first hinged lug (330a) and the second hinged lug (410a) are rotationally connected. ​ 2. A drive-steer integrated motorized wheel assembly as in claim 1, wherein, ​ 3. The drive-by-wire electric wheel assembly of claim 1, wherein, ​ 4. The drive-by-wire electric wheel assembly of claim 1, wherein, ​ 5. A drive-steer integrated motorized wheel assembly as in claim 4, wherein, ​ 6. A drive-steer integrated motorized wheel assembly as in claim 5, wherein, ​

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