CN102673390A - Rear axle differential device and energy-saving vehicle employing same - Google Patents

Abstract

The invention discloses a rear axle differential device and an energy-saving vehicle using the differential device. The rear axle differential device includes a power device for rotating the axle assembled on the vehicle frame and driving the axle to rotate. The two ends of the axle are Wheels are installed respectively, and an overrunning clutch is respectively installed between the two wheels and the axle shaft. The inner ring of the overrunning clutch is coaxially fixedly connected with the axle shaft respectively, and the outer ring is respectively coaxially fixedly connected with the respective corresponding wheels. The rear axle differential device of this structure can meet the requirements of wheel rotation and inner and outer wheel differential speed when turning, and compared with the prior art, the size and quality of the overrunning clutch are obviously smaller than the size and quality of the differential, and it is also The utility model can meet the lightweight requirement of the energy-saving vehicle, and has a simple structure.

Description

A rear axle differential device and an energy-saving vehicle using the differential device

technical field

The invention relates to an energy-saving vehicle, in particular to a rear axle differential device of the energy-saving vehicle, which belongs to the field of automobiles.

Background technique

The rear axle of a two-wheel drive vehicle is generally equipped with a differential device, which can meet the requirements of the differential speed of the inner and outer wheels when turning. Traditional differential devices mostly use differentials, but with the development of energy-saving and emission-reduction vehicles, especially the emergence of energy-saving vehicles, energy-saving vehicles are required to reduce weight under the premise of ensuring safety, so as to improve transmission efficiency and save energy consumption. However, the size and mass of common differentials are too large to meet the lightweight requirements of energy-saving vehicles, and the design and installation are also more complicated.

Contents of the invention

The object of the present invention is to provide an automobile rear axle differential device that can meet the requirements of lightening the energy-saving vehicle, and at the same time provide an energy-saving vehicle using the differential device.

The rear axle differential device of the present invention adopts the following technical scheme: a rear axle differential device, including a power device for rotating an axle assembled on the vehicle frame and driving the axle to rotate, wheels are respectively installed at both ends of the axle, An overrunning clutch is respectively installed between each wheel and the axle shaft, and the inner ring of the overrunning clutch is respectively coaxially fixedly connected with the axle shaft, and the outer ring is respectively coaxially fixedly connected with the respective corresponding wheels.

The energy-saving vehicle of the present invention adopts the following technical solutions: An energy-saving vehicle includes a vehicle frame and a rear axle differential device installed on the vehicle frame, and the rear axle differential device includes an axle rotatably assembled on the vehicle frame and a driving axle Rotating power unit, wheels are installed at both ends of the axle, and overrunning clutches are installed between the two wheels and the axle. Fixed connection.

The rear axle differential device with the above structure and the energy-saving vehicle using the device, since the overrunning clutch is respectively installed between the axle and the wheel, the inner ring of the overrunning clutch is coaxially connected with the axle, and the outer ring is coaxially connected with the wheel. During power transmission, the power is transmitted to the inner ring of the overrunning clutch through the axle, and the inner ring always has a tendency to surpass the outer ring, so the power is transmitted to the outer ring through the inner ring to realize the rotation of the wheels. When turning, the inner wheel The rotational speed of the inner wheel is less than that of the outer wheel, and the rotational speed of the axle is less than that of the outer wheel and greater than that of the inner wheel. The overrunning clutch corresponding to the inner wheel can ensure that the inner ring always has a tendency to overtake the outer ring. The overrunning clutch corresponding to the outer wheel can It is guaranteed that the outer ring always has a tendency to overtake relative to the inner ring. Therefore, the rear axle differential device of this structure can meet the requirements of wheel rotation and inner and outer wheel differential speed when turning, and compared with the prior art, the overrunning clutch The size and quality of the differential gear are obviously smaller than that of the differential gear, and it can also meet the light weight requirements of energy-saving vehicles, and the structure is simple.

Description of drawings

Fig. 1 is the embodiment structural representation of rear axle differential device of the present invention.

Detailed ways

The embodiment of the rear axle differential device of the present invention: as shown in Figure 1, comprises the axle shaft 6 that is used to rotate and assemble on the vehicle frame 3, and axle shaft 6 is connected with power plant 4 transmissions by gear set 5, and the two ends of axle shaft 6 Wheels 1 are respectively installed, and overrunning clutches are respectively installed between the two wheels 1 and the axle 6, the inner rings 7 of the two overrunning clutches are respectively coaxially connected with the axle 6, and the outer rings 2 are respectively coaxial with the respective corresponding wheels 1 Fixed connection.

During power transmission, the power unit 4 drives the axle 6 to rotate on the vehicle frame 3 through the gear set 5, and the power is transmitted to the inner ring 7 of the overrunning clutch through the axle 6. The inner ring 7 always has a tendency to exceed the speed of the outer ring 2 relative to the outer ring 2. Therefore, the inner ring 7 of the overrunning clutch is combined with the outer ring 2, and the power is transmitted to the outer ring 2 through the inner ring 7 of the overrunning clutch, and then to the wheel 1 to realize power transmission. In the process of turning, the rotation speed of the inner wheel is smaller than that of the outer wheel, and the rotation speed of the axle 6 is smaller than that of the outer wheel and greater than the rotation speed of the inner wheel. The power will only be transmitted to the inner wheel through the axle 6 to ensure that the rotation speed of the outer wheel is always greater than that of the inner wheel. The rotational speed of the wheels.

The embodiment of energy-saving vehicle of the present invention: comprise vehicle frame and the rear axle differential device that is installed on the vehicle frame, as shown in Figure 1, the structure of rear axle differential device and the structure of the rear axle differential device of above-mentioned embodiment consistent, and its content will not be repeated here. the

Claims (2)

1. A rear axle differential device, comprising a power unit for rotating an axle assembled on the vehicle frame and driving the axle to rotate, wheels are respectively installed at the two ends of the axle, and it is characterized in that: between the two wheels and the axle An overrunning clutch is installed, and the inner ring of the overrunning clutch is coaxially fixedly connected with the axle shaft respectively, and the outer ring is respectively coaxially fixedly connected with the corresponding wheels respectively. 2. An energy-saving vehicle, comprising a vehicle frame and a rear axle differential device installed on the vehicle frame, the rear axle differential device includes an axle mounted on the vehicle frame and a power device for driving the axle to rotate, the two axles Wheels are respectively installed at the two ends, and the feature is that an overrunning clutch is respectively installed between the two wheels and the axle, the inner ring of the overrunning clutch is coaxially fixedly connected with the axle respectively, and the outer ring is respectively coaxially fixedly connected with the respective corresponding wheels.

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