TWM588395U - Thin type power device of electric vehicle - Google Patents

Abstract

The utility model relates to a thin power device for an electric vehicle, which comprises a thin motor with a power output shaft and a reduction gear unit that also has a power output shaft, which are combined and locked together. The speed reduction unit further includes a shell locked on a shell seat. The output shaft of the reduction unit is set on the intermediate shaft between the casing and the housing seat, and an output gear is provided on the output shaft of the reduction unit. At the same time, the shaft of the output shaft of the thin motor is set on the same center line. On the housing seat, the end of the output shaft of the thin motor is provided with a power input gear, and on the side between the housing and the housing seat, an intermediate shaft is provided, so that the intermediate shaft is respectively provided with the input force on the output shaft of the thin motor. The first intermediate gear meshed by the gears and the second intermediate gear meshed with the output gear on the output shaft of the reduction unit, so that the design of the thin motor and the two output shafts of the reduction unit on the same axis centerline makes the entire power unit The volume can be greatly reduced, so that it can be easily accommodated in the small space of the electric vehicle body.

Description

Thin power unit of electric vehicle

The present invention relates to a reduction motor device in which a reduction unit is driven by a thin motor. At the same time, the output shaft of the reduction unit and the output shaft of the thin motor are on the same axis line, so that the thickness and volume of the reduction motor device can be reduced. , So that it can be installed in the narrow space of the electric vehicle.

Regarding the electric vehicles of electric scooters or electric wheelchairs, they are all provided for the elderly or those with reduced mobility, and they are all driven by a reduction motor to allow the rider to drive effortlessly. At the same time, the aforementioned reduction motor It is the source of driving power for vehicles. These power units usually include electric motors and reduction mechanisms, such as the patent issued by the Republic of China No. 552928. The motor is installed in the car shell between the two rear wheels, but it is hindered. The small space in the car shell and the shuttle of the inner body frame make it difficult to set the motor. Usually, the motor with a large size must be inserted into the car shell after precise calculation and selection of appropriate specifications.

In addition, such as the Patent No. M518975 published by the Republic of China, the motor output shaft of the power unit and the output shaft of the reduction mechanism are set at 90 degrees. The purpose is to solve the problem when the distance between the two rear wheels of the electric vehicle is insufficient. The gear motor is adopted, but the lateral space relative to the car shell can be enough for the gear motor mentioned above. However, the heading space of the car shell is not enough. For the designer, it is necessary to increase the depth of the electric vehicle without increasing the depth. Is also a rigorous test Check.

The reason is that in order to improve the power device of the aforementioned known electric vehicle, whether the motor and the reduction mechanism are on the same axis line or at a 90-degree design, it is difficult to design it to be accommodated in the car shell. Provided is a motor and a power output shaft of a reduction gear unit, which not only adopts the same shaft center design and reduces the thickness of the motor, so that the power unit can be more easily installed in a motor vehicle housing with a limited space. This makes electric vehicles more lightweight.

The technical solution adopted by the new type to solve its technical problems is: a thin motor with an extended output shaft and a reduction unit extended with an output shaft, which are combined and locked together, and reduce the output shaft and speed of the thin motor. The output shaft of the unit is set on the same axis line, and the input shaft of the output shaft of the thin motor is provided with a gear to penetrate into the reduction unit, and then an output gear is provided on the output shaft passing through the reduction unit to reduce the speed. An intermediate shaft is provided on one side of the unit, and the intermediate shaft is respectively provided with a first intermediate gear meshing with the input gear and a second intermediate gear meshing with the output gear.

Therefore, the design of the new thin motor and the two output shafts of the thin motor and the reduction unit are on the same axis line, so that the volume of the power device of the electric vehicle can be greatly reduced, thereby making it easier for the designer to design the power device. It is installed in the narrow space of the car shell of the electric vehicle, which makes the electric vehicle lighter to facilitate better endurance.

1‧‧‧ thin motor

11‧‧‧ output shaft

12‧‧‧Into the gear

13‧‧‧brake device

2‧‧‧ reduction unit

201‧‧‧shell

202‧‧‧Shell

203‧‧‧bearing

21‧‧‧ output shaft

22‧‧‧output gear

23‧‧‧Second intermediate gear

24‧‧‧ intermediate shaft

25‧‧‧First intermediate gear

The present invention is further described below with reference to the drawings and embodiments.

FIG. 1 is a perspective view of the appearance of the power unit of the novel electric vehicle.

FIG. 2 is a schematic exploded front view of the novel power unit.

Fig. 3 is a rear perspective exploded schematic view of the novel power unit.

FIG. 4 is a schematic cross-sectional view of the novel power unit.

Please refer to FIG. 1 to FIG. 4. The power device of the new electric vehicle is a reduction motor, which includes a thin motor 1 and a reduction unit 2 which are locked and locked together. The thin motor 1 is provided There is a power output shaft 11. A power input gear 12 is provided at the end of the power output shaft 11, and the thin motor 1 is further provided with a brake device 13.

The above-mentioned reduction unit 2 includes a housing base 201 that is locked and locked with the thin motor 1 by screws, and a housing 202 is locked outside the housing base 201, and a bearing housing 230 is locked at the middle of the housing base 201 Let an output shaft 21 be provided through the bearing axial shaft at the middle between the housing seat 201 and the housing 202, and the output shaft 21 and the output shaft 11 of the thin motor 1 be arranged on the same axial line, and An output gear 22 is provided on the output shaft 21 between the housing base 201 and the housing 202, and another intermediate shaft 24 is provided on the side between the housing base 201 and the housing 202 through a bearing axial shaft, and further The intermediate shaft 24 is provided with a second intermediate gear 23 meshed with the output gear 22 and a first intermediate gear 25 meshed with the input gear 12 on the output shaft 11 of the thin motor 1.

Therefore, through the reduction gear set on the reduction unit 2, the output shaft 11 of the thin motor 1 drives the output gear 22 of the reduction unit 2 through the intermediate gear set, and then the output shaft 21 of the reduction unit 2 drives the wheels on the electric vehicle. When driving while rotating, the braking device 13 on the thin motor 1 also allows the electric vehicle to be braked to achieve the safety purpose of preventing sliding.

Therefore, through the arrangement of the thin motor 1 and the thin motor 1 and the two output shafts 11 and 21 of the reduction unit on the same axis line, not only the volume of the power device of the electric vehicle can be greatly reduced, but also the power device is easier. Installed in the narrow space of the shell of the electric vehicle, it also allows It is easier for the designer to design the power unit loading, and at the same time, the electric vehicle can be made lighter to achieve better endurance performance.

Claims (1)

The utility model relates to a thin power device for an electric vehicle, which comprises a thin motor with an output shaft extended and a reduction unit with an output shaft locked, so that the output shaft of the thin motor and the output shaft of the reduction unit are arranged on the same axis. The input shaft of the output shaft of the thin motor is provided with a gear to penetrate the reduction unit. At the same time, an output gear is placed on the output shaft of the reduction unit, and an intermediate shaft is provided on one side of the reduction unit. The shaft has a first intermediate gear meshed with the input gear and a second intermediate gear meshed with the output gear, respectively, on the intermediate shaft.