An electric wheel drive-damper suspension integrated system

Abstract

The utility model discloses an electric wheel drive - damping suspension integrated system, including wheel hub, brake, speed reducer assembly, double wishbone type suspension assembly. Double wishbone type suspension assembly includes: suspension connecting frame, upper lateral arm, lower lateral arm and torsion bar spring. Through built -in electric motor in tire wheel hub to electric motor, speed reducer, suspension, brake device and wheel hub bearing etc. are gathered design, and the spring burden is lightened, and vibration is lightened to a certain extent. With this, the requirement of high -performance operation of car is reached.

Description

Technical Field

[0001] This utility model patent belongs to the field of electric vehicles, specifically relating to an electric wheel that integrates drive and shock-absorbing suspension. Background Technology

[0002] Traditional petroleum-powered vehicles offer high efficiency, but their side effects are also significant: environmental pollution, declining air quality, rising oil prices, and resource scarcity are all serious social problems. Electric vehicles, on the other hand, use electricity as their primary power source and oil and natural gas as secondary energy sources. Compared to gasoline-powered vehicles, electric vehicles are environmentally friendly, energy-efficient, safe, and highly efficient. They have a particularly significant advantage in environmental protection and energy conservation, making the research and development of electric vehicles undoubtedly the best way to alleviate environmental pressure and reduce energy consumption. Electric wheel drive electric vehicles offer advantages such as simplified structure and easy control, making this technology a promising area for development in electric vehicle technology.

[0003] An electric wheel drive system integrates the electric motor and reduction gear into the wheel hub, with the motor housing and reduction gear housing combined into a single design. This structural layout eliminates the need for a differential and other unnecessary components such as a driveshaft. During operation, the electric wheels can be individually controlled electronically, eliminating the need for a complex transfer case, significantly simplifying the drivetrain and greatly increasing transmission efficiency. This arrangement also saves internal space, reduces unsprung mass, and enhances vehicle handling stability. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an integrated electric wheel drive-damping suspension system with a simple and lightweight structure and good controllability.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an electric wheel drive-damping suspension integrated system, characterized in that it includes a wheel, a wheel hub, a brake, a reducer assembly, and a double wishbone suspension assembly.

[0006] Preferably, the reducer assembly includes a left bearing end cover, a left housing, a middle housing, a right housing, planetary gears, a sun gear, a left planetary gear carrier, a right planetary gear carrier, a planetary gear shaft, a rotor, a rotor shaft, a sun gear shaft, and a bearing end cover; the double wishbone suspension assembly includes a suspension connecting frame, a lower wishbone, an upper wishbone, and a torsion bar spring.

[0007] Preferably, the hub, wheel, and brake are fixedly connected by bolts. The right side of the hub passes through the felt ring, the left bearing end cover of the reducer, and the left housing of the reducer to connect with the left planetary gear carrier. The left planetary gear carrier, the right planetary gear carrier, and the planetary gear shaft are connected, and the three planetary gears are fixed together by bearings.

[0008] Preferably, the sun gear is coaxial with the right planetary gear carrier and located between the left and right planetary gear carriers; the sun gear is connected to the sun gear shaft; and the right side of the sun gear shaft is connected to the rotor shaft; the double wishbone suspension assembly is connected to the right housing of the reducer.

[0009] Preferably, the lower control arm, the upper control arm, and the suspension connecting frame are connected by a movable joint, and the torsion bar spring is connected to the lower control arm by the same movable joint; the lower control arm and the torsion bar spring mainly bear the weight and vibration of the vehicle body.

[0010] The beneficial effects of this utility model are as follows: This utility model provides an integrated electric wheel drive-damping suspension system, which has the characteristics of simple structure and good controllability; by directly mounting the electric motor in the tire hub, the transmission distance is reduced, the structure of the drive system is simplified, and some components such as clutch, transmission and differential are omitted, thereby improving vehicle operating efficiency; compared with other drive methods, the vehicle's driving performance and driving performance are optimized, and it is also beneficial to vehicle structure layout, space optimization, and reduced spring load. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the assembly of the wheel, brake and hub of this utility model.

[0013] Figure 3 This is a schematic diagram of the left side assembly of the reducer housing of this utility model.

[0014] Figure 4 This is a schematic diagram of the assembly on the right side of the reducer housing of this utility model.

[0015] Figure 5 This is a schematic diagram of the planetary gear assembly of the reducer of this utility model.

[0016] Figure 6 This is a schematic diagram of the assembly of the rotor part of the reducer of this utility model.

[0017] Figure 7 This is a schematic diagram of the assembly of the double wishbone suspension of this utility model.

[0018] Explanation of reference numerals in the attached diagram: 1 Wheel, 2 Wheel hub, 3 Brake, 4 Reducer assembly, 4.1 Felt ring, 4.2 Left bearing end cover of reducer, 4.3 Left housing of reducer, 4.4 Middle housing of reducer, 4.5 Right housing of reducer, 4.6 Bearing end cover, 4.7 Left planetary gear carrier, 4.8 Planetary gear, 4.9 Sun gear, 4.10 Right planetary gear carrier, 4.11 Planetary gear shaft, 4.12 Sun gear shaft, 4.13 Rotor, 4.14 Rotor shaft, 5 Double wishbone suspension assembly, 5.1 Suspension connecting frame, 5.2 Upper control arm, 5.3 Torsion bar spring, 5.4 Lower control arm. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1 to 7 As shown, this utility model provides an integrated electric wheel drive-damping suspension system, including a wheel 1, a wheel hub 2, a brake 3, a reducer assembly 4, and a double wishbone suspension assembly 5. The brake 3 is installed between the wheel 1 and the wheel hub 2 and is fixedly connected by bolts. The brake 3 is the braking system of the entire vehicle, and performs braking and deceleration when necessary. The left side of the reducer's left bearing end cover 4.2 is connected to the felt ring 4.1 and is fitted onto the wheel hub 2.

[0021] The reducer 4 includes a felt ring 4.1, a left bearing end cover 4.2, a left housing 4.3, a middle housing 4.4, a right housing 4.5, a bearing end cover 4.6, a left planetary gear carrier 4.7, planetary gears 4.8, a sun gear 4.9, a right planetary gear carrier 4.10, a planetary gear shaft 4.11, a sun gear shaft 4.12, a rotor 4.13, and a rotor shaft 4.14. The left housing 4.3, the middle housing 4.4, and the right housing 4.5 are bolted together to form a protective shell that protects the hub 2, the left planetary gear carrier 4.7, planetary gears 4.8, sun gear 4.9, right planetary gear carrier 4.10, planetary gear shaft 4.11, sun gear shaft 4.12, rotor 4.13, and rotor shaft 4.14. The reducer assembly 4 can transmit the higher speed of the rotor 4.13 in the motor to the sun gear 4.9 through the rotor shaft 4.14 and the sun gear shaft 4.12. The sun gear 4.9 drives the rotation of the planet gears 4.8, the left planetary carrier 4.7 and the right planetary carrier 4.10 to adjust the higher speed so that the speed of the final wheel 1 is within the required range.

[0022] The double wishbone suspension assembly 5 includes a suspension connecting frame 5.1, an upper wishbone 5.2, a torsion bar spring 5.3, and a lower wishbone 5.4. The suspension connecting frame 5.1 is bolted to the right housing 4.5 of the reducer and the bearing end cover 4.6. The upper wishbone 5.2 and the lower wishbone 5.4 are respectively fixed to the upper and lower sides of the suspension connecting frame 5.1 using movable joints. One end of the torsion bar spring 5.3 is fixed to the lower wishbone 5.4 using a movable joint. When the wheel 1 bounces up and down, the torsion bar spring 5.3 will convert the force into elastic potential energy through torsional deformation, thereby reducing vibration.

[0023] Driving principle: After the motor starts, rotor 4.13 and rotor shaft 4.14 begin to rotate. Rotor 4.13, sun gear shaft 4.12, and sun gear 4.9 rotate together. Sun gear 4.9 drives three spaced planetary gears 4.8, left planetary gear carrier 4.7, and right planetary gear carrier 4.10 to rotate. Left planetary gear carrier 4.7 drives wheel hub 2, brake 3, and wheel 1 to rotate, thereby driving the vehicle. The left planetary gear carrier 4.7 is fixed to wheel hub 2 by a spline. Figure 5 The planetary gear carrier 4.7 shown is an external spline shaft, as... Figure 2 The hub 2 shown is an internal spline shaft; the rotor shaft 4.14 and the sun gear shaft 4.12 are connected by splines, wherein the rotor shaft 4.14 is an external spline shaft and the sun gear shaft 4.12 is an internal spline shaft; the sun gear 4.9 and the sun gear shaft 4.12 are fixedly connected by a flat key. The reducer assembly 4 reduces the speed by driving the planetary gears 4.8, the left planetary gear carrier 4.7 and the right planetary gear carrier 4.10 through the sun gear 4.9. The resulting lower speed is transmitted to the hub 2 by the left planetary gear carrier 4.7 to finally reach the speed range required by the wheel 1.

[0024] Vibration damping working principle: When a car encounters a protruding road surface such as a rock, wheel 1 bounces upwards, and the torsion bar spring 5.3 undergoes torsional deformation. The torsional elastic force generated by this deformation can absorb vibration energy. When the car passes the protruding road surface and enters a level surface, the torsion bar spring 5.3 will restore its torsional angle and release elastic potential energy, ultimately achieving the vibration damping effect. When the car falls freely and the wheels contact the ground, the car will move downwards due to inertia. The torsion bar spring 5.3 will be subjected to force and twist at a certain angle, converting the force into elastic potential energy. Then, the torsion bar spring 5.3 will restore its torsional angle and release elastic potential energy. This process achieves the vehicle's shock absorption and cushioning effect.

[0025] All technical solutions in the above embodiments that fall within the scope of this utility model are protected by this utility model. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the scope of protection of this utility model.

Claims

1. An integrated electric wheel drive-damping suspension system, characterized in that: It includes a wheel, a hub, a brake, a reducer assembly, and a double wishbone suspension assembly. The wheel and hub are fixedly connected to the brake by bolts. The right side of the hub is fixedly connected to the left side of the reducer assembly by bolts. The reducer assembly is connected to the double wishbone suspension assembly.

2. The electric wheel drive-damping suspension integrated system according to claim 1, characterized in that: The reducer assembly includes a left bearing end cover, a left housing, a middle housing, a right housing, planetary gears, a sun gear, a left planetary gear carrier, a right planetary gear carrier, planetary gear shafts, a rotor, a rotor shaft, a sun gear shaft, and a bearing end cover; the double wishbone suspension assembly includes a suspension connecting frame, an upper wishbone, a lower wishbone, and a torsion bar spring.

3. The electric wheel drive-damping suspension integrated system according to claim 1, characterized in that: The hub, wheel, and brake are fixedly connected by bolts. The right side of the hub passes through the felt ring, the left bearing end cover of the reducer, and the left housing of the reducer to connect with the left planetary gear carrier. The left planetary gear carrier, the right planetary gear carrier, and the planetary gear shaft are connected and the three planetary gears are fixed together by bearings.

4. The electric wheel drive-damping suspension integrated system according to claim 2, characterized in that: The sun gear in the reducer assembly is coaxial with the right planetary gear carrier and located between the left and right planetary gear carriers. The sun gear is connected to the sun gear shaft, and the right side of the sun gear shaft is connected to the rotor shaft. The double wishbone suspension assembly is connected to the right housing of the reducer.

5. The electric wheel drive-damping suspension integrated system according to claim 2, characterized in that: The upper and lower control arms are connected to the suspension connecting frame via movable joints; the torsion bar spring is connected to the lower control arm via a movable joint as well; the lower control arm and torsion bar spring mainly bear the weight and vibration of the vehicle body.

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