Electric vehicle motor integrated with speed reducing box

Abstract

An electric vehicle motor integrated with a speed reducing box comprises a motor and the speed reducing box, and is characterized in that a shell of the speed reducing box is divided into a left shell and a right shell; a bearing chamber is arranged on the left shell and a through hole is formed in the wall of the right shell; a bearing is arranged on the inner side wall of the bearing chamber of the left shell; the other end of a motor shaft of the motor is connected with the bearing of the left shell; a small gear is fixedly arranged on the motor shaft and is engaged with a gear of the speed reducing box; a cavity is formed in the outer side of the through hole; a seam allowance is arranged at the outer port of the cavity; the other end of an iron core of a motor stator is matched with the seam allowance; a wining stretching out of the iron core of the stator is arranged in the cavity; a screw rod penetrating through a rear end cover is rotationally fixed in a screw hole formed in the outer port of the cavity. Compared with the prior art, the electric vehicle motor has the advantages of compact structure, small noises, uneasiness of having accumulated machining errors and small volume.

Description

Technical field: [0001] The invention relates to a motor for an electric vehicle, in particular to a motor with an integral structure of a reduction box and a motor. Background technique [0002] At present, the gearbox and motor of electric vehicles are of split structure. The gearbox and motor are independent parts. Automobile manufacturers purchase them separately. For the main structure, see figure 1 , the output shaft of the motor is the spline shaft 1, the end cover of the motor is processed with a spigot 2, the spigot 2 is concentric with the spline shaft, and the end face of the motor is also processed with a mounting screw hole 3. When installing, insert the motor spline shaft into the spline of the reducer In the key hole 4, the seam 2 of the motor end cover cooperates with the seam 5 of the reduction box, and the screw 6 passes through the screw hole 3 of the motor to axially fix the motor to the speed reduction box. When working, the spline shaft of the motor dr...

AI Technical Summary

Problems solved by technology

[0003] 1. Due to the influence of the clearance, the spline shaft of the motor and the spline sleeve of the gearbox have a large noise:

[0004] 2. There are cumulative machining errors between the spline shaft of the motor and the seam on the end face of the motor, which can easily cause interference;

[0005] 3. The motor is fixed to the reduction box with screws, and there is a risk of loosening;

[0006] 4. Due to the effect of the double thickness of the motor end cover and the gearbox shell, the axial length of the whole machine is large, which is not conducive to the overall space layout of the car

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