CN104716777A

CN104716777A - Integrated-structure motor for electric vehicle

Info

Publication number: CN104716777A
Application number: CN201510103801.5A
Authority: CN
Inventors: 梁昌勇; 李显平; 魏建平
Original assignee: GUANGDONG HEPU POWER TECHNOLOGY CO LTD
Current assignee: GUANGDONG HEPU POWER TECHNOLOGY CO LTD
Priority date: 2015-03-10
Filing date: 2015-03-10
Publication date: 2015-06-17

Abstract

The invention discloses an integrated-structure motor for an electric vehicle. The integrated-structure motor for the electric vehicle comprises a motor and a reduction box. The integrated-structure motor is characterized in that a shell forming the reduction box is provided with a bearing room, a bearing hole is formed in one side wall of the bearing room, an oil seal is arranged in the bearing hole, the other end of the motor shaft penetrates through a bearing in the bearing hole and stretches into the bearing room, a small gear is fixed to the shaft end at the other end of the motor shaft, the small gear is meshed with a gear of the reduction box, a cavity is formed in the outer side of one side wall of the bearing room, the other end of a motor stator core abuts against an allowance in an outer end opening of the cavity, and a screw rod which penetrates through a rear end cover and the stator core is connected and fixed in a screw hole formed in the outer end opening of the cavity in a screwed mode. Compared with the prior art, the integrated-structure motor has the advantages that the structure is compact, noise is low, machining errors are not likely to be accumulated, and the size is small.

Description

The motor of electric vehicle integral structure

Technical field

The present invention relates to a kind of electric motor for electric vehicle, particularly reduction box and motor integrative-structure motor.

Background technology

At present, the reduction box of electric automobile and motor are all Split type structures, reduction box and motor are separate parts, auto vendor is all separately buying, Fig. 1 is shown in by primary structure, motor output shaft is splined shaft 1, electric motor end cap is processed with seam 2, seam 2 is concentric with splined shaft, motor end face is also processed with installation screw 3, during installation, is inserted by motor spline shaft in reduction box splined hole 4, electric motor end cap seam 2 coordinates with reduction box seam 5, is axially fixed on reduction box by motor through motor screw 3 with screw 6.During work, motor spline shaft drives reduction box pinion, realizes slowing down, increase moment of torsion object under gears meshing effect.This Split type structure Problems existing is as follows:

1, motor spline shaft coordinates the impact due to gap with gear box spline housing, and noise is large:

2, there is accumulation mismachining tolerance in motor spline shaft and motor end face seam, very easily causes interference;

3, motor is screwed on reduction box, there is the risk loosened;

Electric motor end cap and the effect of reduction box casing bilayer thickness, make complete machine axial length large, be unfavorable for that Integral automobile space is arranged.

Summary of the invention

The object of the invention is just to provide the motor that a kind of compact conformation, noise are few, be not easy accumulation mismachining tolerance, electric vehicle integral structure that volume is little.

The present invention seeks to realize like this:

Comprise the epitrochanterian motor shaft forming motor, with the stator core of winding, rear end cap and the reduction box with housing, one end of motor reel is connected on the bearing in rear end cap, one end of stator core in motor abuts against on the seam on rear end cap, its special feature be form reduction box housing on be provided with bearing chamber, a wherein sidewall of bearing chamber is provided with dead eye, bearing is provided with in dead eye, the other end of motor reel stretches into in gear box through the bearing in dead eye, and be connected with gear box internal pinionmw, pinion is fixed in axle head, the gears meshing of pinion and reduction box, the arranged outside of bearing chamber has die cavity, die cavity external port is provided with seam, the seam that the other end of stator core in motor abuts against die cavity external port coordinates with this seam, the winding stretching out stator core is arranged in die cavity, through the screw rod of rear end cap spin be fixed on set by die cavity external port screw in.

The mechanical seal structure of oil enveloping structure or annular can be provided with in dead eye.

beneficial effect

1, there is not motor spline shaft and gear shaft spline fitted clearance issues, just there is no the noise that spline gaps brings yet;

2, axle need not process spline, and cost is low;

3, install simply, first reduction box can be assembled and refill stator, rotor;

4, motor eliminates front end housing, and cost reduces, and also have compressed axial space.

Accompanying drawing explanation

Fig. 1 is the structure chart of prior art;

Fig. 2 is structure chart of the present invention;

Fig. 3 is the left view of Fig. 2.

In Fig. 2,3, sequence number illustrates: dead eye 16, gear 17 on screw 3b, the rear end cap edge through hole 8a at the bearing 9 on the bearing 5 on the seam 3a of motor shaft 1, pinion 2, die cavity 3, die cavity external port, oil sealing 4, bearing chamber 15, winding 6, stator core 7, rear end cap 8, rear end cap, screw rod 10, die cavity edge, the seam 8b of rear end cap, motor 11, rotor 12, housing 13, reduction box 14, bearing chamber 15, bearing chamber.

Embodiment:

Now in conjunction with the accompanying drawings and embodiments the present invention is described in further detail:

As Fig. 2, shown in 3, the present invention includes the motor shaft 1 on the rotor 12 forming motor 11, with the stator core 7 of winding 6, rear end cap 8 and the reduction box 14 with housing 13, wherein one end of the motor shaft 1 of motor 11 is connected on the bearing 9 on rear end cap 8, wherein one end of the stator core 7 of motor 11 abuts against on the seam 8b on rear end cap 8, its special feature be form reduction box 14 housing 13 on be provided with bearing chamber 15, a wherein sidewall of bearing chamber 15 is provided with dead eye 16, the inner side of dead eye is provided with oil sealing 4, arranged outside has bearing 5, the other end of the motor shaft 1 of motor 11 stretches into in reduction box through bearing 5 and oil sealing 4, the axle head of the other end of motor shaft 1 is fixed with pinion 2, pinion 2 engages with the gear 17 of reduction box 14, the arranged outside of a wherein sidewall of bearing chamber 15 has die cavity 3, die cavity 3 external port is provided with seam 3a, the seam 3a that the other end of motor 11 stator core 7 abuts against die cavity 3 external port coordinates with this seam 3a, 6 windings stretching out stator core 7 are arranged in die cavity 3, through rear end cap 8 edge through hole 8a, in the screw rod 10 of stator core 7 spins and is fixed on set by die cavity 3 external port screw 3b.

The front and back position of oil sealing 4, bearing 5 can exchange, and also can adopt the mechanical seal of annular.

Bearing chamber 15, die cavity 3 are that overall processing is out together.

operation principle:

During installation, first by bearing 5 and pinion 2 affixed with rotor 12, pinion 2 loads reduction box through oil sealing 4 and engages with gear 17, simultaneously bearing 5, oil sealing 4 enter the bearing chamber 15 of housing 13, the die cavity 3 seam 3a that stator core 7 enters housing is installed again, place rear end cap 8, rear end cap 8 seam 8b is coordinated with stator core 7, with screw rod 10, rear end cap 8 is compressed, make stator core 7 axially loaded fastening, during energising, rotor 12 rotates together with pinion 2, and the engagement of pinion 2 driven gear 17 realizes slowing down, increasing moment of torsion object.

Claims

1. the motor of electric vehicle integral structure, comprise the epitrochanterian motor shaft forming motor, with the stator core of winding, rear end cap and the reduction box with housing, wherein one end of the motor shaft of motor is connected on the bearing on rear end cap, wherein one end of stator core in motor abuts against on the seam on rear end cap, it is characterized in that form reduction box housing on be provided with bearing chamber, a wherein sidewall of bearing chamber is provided with dead eye, bearing is provided with in dead eye, the other end of motor reel stretches into in reduction box through the bearing in dead eye, and be connected with gear box internal pinionmw, pinion is fixed in motor shaft end, the gears meshing of pinion and reduction box, the arranged outside of a wherein sidewall of bearing chamber has die cavity, die cavity external port is provided with seam, the seam that the other end of stator core in motor abuts against die cavity external port coordinates with this seam, the winding stretching out stator core is arranged in die cavity, through the screw rod of rear end cap spin be fixed on set by die cavity external port screw in.

2. the motor of electric vehicle integral structure according to claim 1, is characterized in that the mechanical seal structure being provided with oil enveloping structure or annular in dead eye.

3. the motor of electric vehicle integral structure according to claim 1 and 2, is characterized in that bearing chamber, die cavity is that overall processing is out together.