CN104753247A

CN104753247A - Electric vehicle motor integrated with speed reducing box

Info

Publication number: CN104753247A
Application number: CN201510105791.9A
Authority: CN
Inventors: 梁昌勇; 魏建平; 李显平
Original assignee: GUANGDONG HEPU POWER TECHNOLOGY CO LTD
Current assignee: GUANGDONG HEPU POWER TECHNOLOGY CO LTD
Priority date: 2015-03-11
Filing date: 2015-03-11
Publication date: 2015-07-01

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

With the electric vehicle motor of reduction box one

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;

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

Summary of the invention

The object of the invention be just to provide a kind of compact conformation, noise few, be not easy accumulation mismachining tolerance, volume little with the electric vehicle motor of reduction box one.

The present invention seeks to realize like this:

Comprise the epitrochanterian motor shaft forming motor, with the stator core of winding, rear end cap with seam 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, its special feature is that the housing forming reduction box is divided into left shell and right shell body, left shell is provided with bearing chamber, right shell body wall is provided with through hole, the bearing chamber madial wall of left shell is provided with bearing, the motor shaft other end of motor stretches into reduction box inside through through hole and is connected with the bearing in left shell bearing chamber, the motor shaft other end near the right-hand member of bearing is fixed with pinion, the gears meshing of pinion and reduction box, the arranged outside of through hole 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.

Oil enveloping structure is provided with in through hole.

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: through hole 16, gear 17, left shell 19 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, right shell body 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:

Embodiment one: 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 with seam 8b 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 is that the housing forming reduction box is divided into left shell 19 and right shell body 13, left shell 19 is provided with bearing chamber 15, a wherein sidewall of bearing chamber 15 is provided with through hole 16, oil sealing 4 is provided with in through hole, the madial wall of the bearing chamber 15 of left shell 19 is provided with bearing 5, the other end of the motor shaft 1 of motor 11 to stretch in bearing chamber 15 through through hole 16 and oil sealing 4 and is connected on the bearing 5 on left shell 19, the motor shaft 1 being positioned at bearing chamber 15 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 through hole 16 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.

Right shell body 13, die cavity 3 are that overall processing is out together.

operation principle

During installation, first by affixed for the motor shaft 1 of bearing 5, pinion 2, oil sealing 4 and rotor 12, pinion 2 loads reduction box through through hole 16 and engages with gear 17, bearing 5 is positioned on the left shell 19 of bearing chamber 15 simultaneously, 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. with reduction box electric vehicle motor integrally, comprise the epitrochanterian motor shaft forming motor, with the stator core of winding, rear end cap with seam 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 the housing forming reduction box is divided into left shell and right shell body, left shell is provided with bearing chamber, right shell body wall is provided with through hole, the bearing chamber madial wall of left shell is provided with bearing, the motor shaft other end of motor stretches into reduction box inside through through hole and is connected with the bearing in left shell bearing chamber, the motor shaft other end near the right-hand member of bearing is fixed with pinion, the gears meshing of pinion and reduction box, the arranged outside of through hole 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 electric vehicle motor of the one with reduction box according to claim 1, is characterized in that being provided with oil enveloping structure in through hole.

3. the electric vehicle motor of the one with reduction box according to claim 1 and 2, is characterized in that right shell body, die cavity is that overall processing is out together.