CN104702045A

CN104702045A - Integral motor with stable structure for electric vehicle

Info

Publication number: CN104702045A
Application number: CN201510105711.XA
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: 2015-03-11
Filing date: 2015-03-11
Publication date: 2015-06-10

Abstract

The invention provides an integral motor with a stable structure for an electric vehicle. The motor comprises a motor body and a reduction gearbox. The motor is characterized in that a housing of the reduction gearbox is divided into a left housing and a right housing; a bearing chamber is formed in the left housing; a through hole is formed in the wall of the right housing; a bearing is arranged on a left housing body; the other end of a motor shaft of the motor body is connected to the bearing on the left housing body; a pinion which engages with a gear of the reduction gearbox is fixed on the motor shaft; a cavity is formed in the outer side of the bearing chamber; a spigot is arranged at an outer port of the cavity; the cavity is equipped with a cylindrical chamber which axially directly reaches the spigot at a rear end cover; the other end of a stator iron core of the motor body is matched with the spigot; a winding extending out of the stator iron core is arranged in the cavity; a screw passing through the rear end cover is fixed into a screw hole in the outer port of the cylindrical cavity by a rotating manner. Compared with the prior art, the motor has the advantages of being compact in structure, small in noise, difficult to cause accumulated processing error, and small in size.

Description

There is the integrated electric vehicula motor of robust structure

Technical field:

The present invention relates to a kind of electric motor for electric vehicle, particularly there is the integrated electric vehicula motor of robust structure.

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, the integrated electric vehicula motor with robust 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 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, what die cavity axially went directly rear end cap seam is column chamber, die cavity and column chamber connecting place are provided with seam, stator core in motor coordinates with column chamber and is arranged in column chamber, the other end of stator core in motor abuts against die cavity and coordinates with this seam with on the seam of column chamber connecting place, the winding stretching out stator core is arranged in die cavity, in spinning be fixed on set by the external port of column chamber screw through the screw rod of rear end cap.

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: the through hole 16 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, gear 17, column chamber 18, left shell 19.

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 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 column chamber 18 of through rear end cap seam 8b that the arranged outside of through hole 16 has die cavity 3 and is connected with die cavity 3, die cavity 3 and column chamber 18 connecting place are provided with seam 3a, motor 11 stator core 7 coordinates with column chamber 18 and is arranged in column chamber 18, the other end of stator core in motor abuts against die cavity 3 and coordinates with this seam 3a with on the seam 3a of column chamber 18 connecting place, 6 windings stretching out stator core 7 are arranged in die cavity 3, in spinning be fixed on set by the external port of column chamber 18 screw 3b through the screw rod 10 of rear end cap 8 edge through hole 8a.

Right shell body 13, die cavity 3, column chamber 18 are that overall processing is out together.

operation principle

During installation, first oil sealing 4 is installed, then stator core 7 is pressed into column chamber 18, stator core 7 is fixedly connected with reduction box 14 housing, to be pressed into bearing 5 again, pinion 2, the rotor 12 of oil sealing 4 enters in stator core 7, when entering stator core 7, pinion 2 engages with gear 17 through through hole 16, bearing 5 is positioned on the left shell 19 of bearing chamber 15 simultaneously, place rear end cap 8, rear end cap 8 seam 8b is coordinated with column chamber 18, finally with screw rod 10, rear end cap 8 is compressed, make rear end cap 8 axially loaded fastening, during energising, rotor 12 rotates together with pinion 2, the engagement of pinion 2 driven gear 17 realizes slowing down, increase moment of torsion object.

Claims

1. there is the integrated electric vehicula motor of robust structure, 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, what die cavity axially went directly rear end cap seam is column chamber, die cavity and column chamber connecting place are provided with seam, stator core in motor coordinates with column chamber and is arranged in column chamber, the other end of stator core in motor abuts against die cavity and coordinates with this seam with on the seam of column chamber connecting place, the winding stretching out stator core is arranged in die cavity, in spinning be fixed on set by the external port of column chamber screw through the screw rod of rear end cap.

2. the integrated electric vehicula motor with robust structure according to claim 1, is characterized in that being provided with oil enveloping structure in through hole.

3. the integrated electric vehicula motor with robust structure according to claim 1 and 2, is characterized in that right shell body, die cavity, column chamber is that overall processing is out together.