CN104767326A - Motor - Google Patents

Abstract

A motor comprises a rotor, a stator which sleeves the rotor, a driving shaft, and a casing. The casing sleeves the rotor and the stator. The driving shaft is arranged on the rotor in a penetrating manner and is connected with the rotor in a rotation stopping mode, and the two ends of the driving shaft extend out of the casing. The rotor comprises a rotor body and two rotor covers which are fixed to and cover the end faces of the rotor body. A gap is formed between the inner wall of the casing and the outer wall of the stator. An oil injection hole and an oil outlet hole communicated with the gap are arranged in the casing in a run-through mode. The casing, the two rotor covers, the rotor body, the stator and the driving shaft form a circulation space communicated with the gap. The oil injection hole, the gap, the circulation space and the oil outlet hole form an oil cooling path allowing cooling oil to circulate. The rotor covers rotate with the rotor body, which can effectively prevent cooling oil from entering a gap between the stator and the rotor body due to centrifugal force when the cooling oil flows through the rotor. Thus, rotation of the rotor is not affected, and the performance of the motor is improved.

Description

Motor

Technical field

The present invention relates to a kind of driving mechanism, particularly relate to a kind of motor of oil injection type.

Background technology

Too high temperature can reduce motor performance, efficiency and life-span, and therefore, Cooling Design is the emphasis of motors designs.Motor generally more adopts water-cooled cooling.Water-cooled often adopts the mixed liquor of water and ethylene glycol, usually need configure water jacket around stator.But, use water jacket to take larger space and cause motor volume larger.Conventional oil injection type motor does not need to arrange the structure storing cold oil in addition, but cold oil often penetrates into air gap between stator and rotor, affects rotor turns.

Summary of the invention

In view of above-mentioned condition, be necessary to provide a kind of motor not affecting rotor turns.

A kind of motor, it comprises rotor, is sheathed on this epitrochanterian stator, driving shaft and housing, and this housing is sheathed on this rotor and this stator, and this driving shaft is arranged in this rotor and is connected with this rotor spline and the two ends of this driving shaft are stretched out from housing.This rotor comprise rotor block and two fix and be covered on two rotor lids on rotor block end face, this inner walls and this stator outer wall form gap, throughly on this housing offer the oil filler point and oil outlet that communicate with gap, the inwall of this housing, two rotor lids form towards the sidewall of the sidewall of this housing, the outer wall of this rotor block, the inwall of this stator and this driving shaft the free air space communicated with gap, and this oil filler point, this gap, this free air space and this oil outlet form an oily cooling channel for cold oil circulation.

Motor provided by the invention, rotor is provided with two rotor lids, cold oil enters after motor through oil filler point, enters air gap between stator and rotor block due to centrifugal force, thus can not affect rotor turns when rotor lid rotates can effectively prevent cold oil from flowing through rotor in company with rotor block.

Accompanying drawing explanation

Fig. 1 is the solid assembling schematic diagram of the motor of embodiment of the present invention.

Fig. 2 is the perspective exploded view of the motor shown in Fig. 1.

Fig. 3 is another view stereo decomposing schematic representation of the motor shown in Fig. 1.

Fig. 4 is the stereo decomposing signal of the motor rotor shown in Fig. 1.

Fig. 5 is the cutaway view of the motor shown in Fig. 1 along V-V.

Fig. 6 is the cutaway view of the motor shown in Fig. 1 along VI-VI.

Main element symbol description

Motor	100
		Rotor	20
Rotor block	22
		The first rotor body	224
Cover apertured	2242
		First rotation prevention portion	2244
First spline groove	2246
		Through hole	2248
Second rotor block	226
		Accepting hole	2262
Second rotation prevention portion	2264
		Rotor lid	26
Guide rib	264
		Stator	40
Installing ring	46
		Installing department	462
Driving shaft	60
		Axis body	62
Connector	64
		Second spline groove	642
Housing	80
		Body	82
Installing groove	824
		Support the shaft shoulder	8242
First gap	826
		Second gap	827
Tight lock part	828
		First end cap	84
Main body	842、862
		Lug	8422、8622
Sleeve joint hole	8424、8624
		Oil filler point	8428
Oil outlet	8429
		Support body	844、864
Opening	8442、8642
		Installation portion	8440
Space	845、865
		Second end cap	86
Bearing	90
		First free air space	802
Second free air space	804
		Oil cooling channel	808

Embodiment

Refer to Fig. 1 to Fig. 3, the motor 100 of embodiment of the present invention drives for electric motor car (not shown).Motor 100 comprises rotor 20, stator 40, driving shaft 60 and housing 80.Stator 40 is sheathed on rotor 20.Rotor 20 and stator 40 are all contained in housing 80.Driving shaft 60 to be arranged in rotor 20 and to be connected with rotor 20 spline, and the two ends of driving shaft 60 are stretched out from housing 80.Rotor 20, driving shaft 60 can relative stator 40 and housing 80 rotate.

Refer to Fig. 4, rotor 20 comprises the rotor lid 26 that rotor block 22 and two are covered on rotor block 22 two ends.Rotor block 22 is roughly disc, and it comprises the first rotor body 224 and fixed cover and is located at the second rotor block 226 on the first rotor body 224.The first rotor body 224 approximate centre position offers cover apertured 2242.The inwall of cover apertured 2242 is provided with a pair first rotation prevention portions 2244 relatively.The outer circle wall of the first rotor body 224 is arranged with two the first spline grooves 2246 relatively along the axis direction of parallel the first rotor body 224.Around overlapping, apertured 2242 is through offers four loss of weight through holes 2248 to the first rotor body 224.Second rotor block 226 offers accepting hole 2262 to accommodate the first rotor body 224.On accepting hole 2262 inwall, corresponding first spline groove 2246 projection forms a pair second rotation prevention portions 2264.Second rotation prevention portion 2264 is contained in the first spline groove 2246, and then the second rotor block 226 is connected with the first rotor body 224 spline.Shape and the size of rotor lid 26 and the second rotor block 226 match.Two rotor lids 26 are fixedly connected with the both ends of the surface of the first rotor body 224 respectively, and cover the first rotor body 224 and the second rotor block 226, prevent relative second rotor block 226 relative motion vertically of the first rotor body 224 with closed the first rotor body 224 and the second rotor block 226.The approximate centre position of rotor lid 26 offer with overlap that apertured 2242 communicates plug hole 262.The side that rotor lid 26 deviates from rotor block 22 peripherally extends to form guide rib 264, to lead when cold oil circulates in motor 100 to the bending of rotor lid 26 center.

Stator 40 is sheathed on the second rotor block 226.Air gap (scheming not mark) is formed between the inwall of stator 40 and the second rotor block 226 outer wall.Coil (not shown) is provided with in stator 40.On the outer circle wall of stator 40, circumferentially direction projection forms installing ring 46.Circumferentially direction gap-forming 3 installing departments 462 on the outer wall of installing ring 46.Installing department 462 extends along the central axis being parallel to stator 40.

Driving shaft 60 comprises axis body 62 and connector 64.Axis body 62 is arranged in cover apertured 2242 and plugs hole 262.Connector 64 fixed cover is located on axis body 62, and on its outer circle wall, corresponding first rotation prevention portion 2244 is arranged with two the second spline grooves 642.First rotation prevention portion 2244 is contained in the second spline groove 642, is connected with the first rotor body 22 spline to make connector 64.In present embodiment, axis body 62 and connector 64 are made into integration.

Please refer to Fig. 5 and Fig. 6, housing 80 comprises body 82, first end cap 84 and the second end cap 86.Body 82 is roughly cylindrical shape, and its fixed cover is located on stator 40.Corresponding 3 recessed formation of installing department 462 three installing groove 824 on the inwall of body 82.Wherein, the bottom of two installing grooves 824 is provided with and supports the shaft shoulder 8242, to offset with corresponding installing department 462.Each installing department 462 is contained in an installing groove 824.Gap (scheming not mark) is formed between the inwall of body 82 and the outer wall of stator 40.This gap comprises the first gap 826 and the second gap 827.Circumferentially direction gap-forming 7 tight lock parts 828 on the outer circle wall of body 82.Tight lock part 828 extends along the central axial direction of parallel body 82.Be appreciated that the number in this gap is arranged according to actual needs.

First end cap 84 and the second end cap 86 are fixedly connected with the two ends of body 82 respectively, and cover adjacent rotor lid 26.First end cap 84 comprises main body 842 and is convexly equipped in main body 842 supports body 844.7 tight lock parts 828 of the corresponding body 82 in edge of main body 842 form 7 lugs 8422.Together with each lug 8422 and a tight lock part 828 hold and are fixed on.Approximate centre position in main body 842 offers sleeve joint hole 8424.In main body 842, interval is through offers two oil filler points 8428 and an oil outlet 8429.Corresponding first gap 826 of oil filler point 8428 arranges and is connected with the first gap 826, and corresponding second gap 827 of oil outlet 8429 arranges and is connected with the second gap 827.Support body 844 and be roughly cylindrical shape, it stretches into body 82 and is oppositely arranged with installing ring 46 and is fixedly connected with installing ring 46.Support between body 844 and installing ring 46 and have space 845.Support the installation portion 8440 of 3 installing department 462 gap-forming bar shapeds of corresponding stator 40 on body 844.Two oil outlets 8429 are positioned at the both sides of one of them installation portion 8440, and oil filler point 8428 this installation portion 8440 relative is arranged.Each installing department 462 and an installation portion 8440 are fixedly connected.Supporting the sidewall of body 844, contiguous main body 842 interval is through offers 5 openings 8442 communicated with the first gap 826.

The structural similarity of the second end cap 86 and the first end cap 84, it comprises main body 862 and is convexly equipped in main body 862 supports body 864.Approximate centre position in main body 862 offers sleeve joint hole 8624.7 tight lock parts 828 of the corresponding body 82 in edge of main body 862 form 7 lugs 8622.Together with each lug 8622 and a tight lock part 828 hold and are fixed on.Support body 864 stretch into body 82 and be oppositely arranged with installing ring 46 and be fixedly connected.Support between body 864 and installing ring 46 and have space 865.Supporting the sidewall of body 864, contiguous main body 862 interval is through offers 5 openings 8642 communicated with the first gap 826.Sleeve joint hole 8624 is offered in approximate centre position in main body 862.Housing 80 is stretched out from sleeve joint hole 8624 and sleeve joint hole 8424 respectively in the two ends of axis body 62.

Motor 100 also comprises two bearings 90.Bearing 90 is sheathed on one end of contiguous first end cap 84 of axis body 62, and to be contained in sleeve joint hole 8424 and to be positioned at the top of connector 64; Bearing 90 is sheathed on one end of contiguous second end cap 86 of axis body 62, and to be contained in sleeve joint hole 8624 and to be positioned at the below of connector 64.

First end cap 84 forms first free air space 802 communicated with the first gap 826 and the second gap 827 towards the sidewall of stator 40, the rotor lid 26 adjacent with the first end cap 84 jointly towards the inwall of the sidewall of the first end cap 84, the sidewall of bearing 90 adjacent with the first end cap 84, the sidewall of driving shaft 60 and stator 40; Second end cap 86 forms second free air space 804 communicated with the first gap 826 and the second gap 827 towards the sidewall of the stator 40 rotor lid 26 adjacent with the second end cap 86 towards between the inwall of the sidewall of the second end cap 86 sidewall of bearing 90, the sidewall of driving shaft 60 and the stator 40 adjacent with the second end cap 86.First free air space 802 and the second free air space 804 form the internal circulation space of motor 100.Two oil filler point 8428, first gaps 826, space 845, gap 827, space 865, second, opening 8442, opening 8642, first free air space 802, second free air space 804 and oil outlets 8429 form an oily cooling channel 808 jointly.

During assembling, the second rotor block 226 is sheathed on the first rotor body 224 and is connected with the first rotor body 224 spline.Two rotor lids 26 are fixedly connected with the both ends of the first rotor body 224 respectively.Stator 40 is sheathed on the second rotor block 226.Connector 64 fixed cover is located on axis body 62.Connector 64 is arranged in the first rotor body 224 and two rotor lids 26 in company with axis body 62.Body 82 fixed cover is located at stator 40.Afterwards, two bearings 90 are sheathed on axis body 62.

During use, cold oil injected from two oil filler points 8428 by oil pipe (figure do not mark) and entered the first gap 826, and then directly contacting with stator 40 outer wall and cool.Cold oil enters the first free air space 802 and the second free air space 804 by the first gap 826 through opening 8442 and opening 8642, thus the inwall of cooling stator 40, coil, driving shaft 60 and bearing 90.Cold oil enters the second gap 827 via space 845 and space 865 again, and flows out from oil outlet 8429.

Motor 100 provided by the invention, rotor 20 is provided with two rotor lids 26, cold oil enters after motor 100 through oil filler point 8428, rotor lid 26 enters air gap between stator 40 and rotor block 22 due to centrifugal force when rotating can effectively prevent cold oil from flowing through rotor 20 in company with rotor block 22, thus can not affect rotor 20 and rotate.The oily cooling channel 808 that gap 827, oil filler point 8428, first gap 826, second, opening 8442, opening 8642, first free air space 802, second free air space 804, space 845, space 865 and oil outlet 8429 are formed, cold oil has certain traffic organising effect in time circulating.In addition, because rotor lid 26 is provided with guide rib 264, cold oil has certain guide effect when free air space circulates.

Be appreciated that, the number in this gap is arranged according to actual needs, number and the position of oil outlet 8429, oil filler point 8428 can be arranged according to actual needs, as oil filler point 8428 also can be arranged on the second end cap 86, only need meet oil outlet 8429, oil filler point 8428 communicates with free air space and gap.

Be appreciated that number and the position of opening 8642, opening 8442 are arranged according to actual needs, the first end cap 84 can not be arranged and support body 844, the second end cap 86 also can not arrange and support body 864, and namely opening 8642, opening 8442 can omit.

Be appreciated that the installing ring 46 on stator 40 can omit.

Be appreciated that the quantity of installing department 462 can be arranged according to actual needs, the setting of the installing department 462 of installing groove 824 correspondence, certainly, together with also can being directly fixed at body 82 with stator 40; First end cap 84 and the second end cap 86 can not arrange lug 8422, lug 8622, body 82 is not arranged corresponding structure, namely direct first end cap 84, second end cap 86 directly to be fixed by screw with body 82.

In addition, those skilled in the art also can do other change in spirit of the present invention, and certainly, these changes done according to the present invention's spirit, all should be included in the present invention's scope required for protection.

Claims (10)

1. a motor, it comprises rotor, be sheathed on this epitrochanterian stator, driving shaft and housing, this housing is sheathed on this rotor and this stator, this driving shaft is arranged in this rotor and is connected with this rotor spline and the two ends of this driving shaft are stretched out from this housing, it is characterized in that: this rotor comprise rotor block and two fix respectively and be covered on two rotor lids in these rotor block both ends of the surface, this inner walls and this stator outer wall form gap, on this housing, interval is through offers the oil filler point and oil outlet that communicate with this gap, the inwall of this housing, two rotor lids are towards the sidewall of this housing, the outer wall of this rotor block, the outer wall of the outer wall of this stator and this driving shaft forms the free air space communicated with this gap jointly, this oil filler point, this gap, this free air space and this oil outlet form an oily cooling channel for cold oil circulation jointly.

2. motor as claimed in claim 1, it is characterized in that: this housing comprises body and is individually fixed in the first end cap and second end cap at these body two ends, this body fixed cover is located at this stator, this gap is between this inner body wall and this stator outer wall, this first end cap is towards the sidewall of this stator, the sidewall towards this rotor block of the rotor lid adjacent with this first end cap, the first free air space is formed between the sidewall of the inwall of this stator and this driving shaft, this second end cap is towards the sidewall of this stator, the sidewall towards this rotor block of the rotor lid adjacent with this second end cap, the second free air space is formed between the sidewall of the inwall of this stator and this driving shaft, this free air space is made up of jointly this first free air space and this second free air space, this oil filler point and this oil outlet is spaced apart is located on this first end cap or this second end cap.

3. motor as claimed in claim 2, it is characterized in that: this first end cap comprises main body and is convexly equipped in main body supports body, on the outer circle wall of this stator, circumferentially direction projection forms installing ring, this supports body and stretches into this body of this housing and be oppositely arranged with this installing ring, this oil filler point and this oil outlet is spaced apart is located in this main body.

4. motor as claimed in claim 3, is characterized in that: this supports and spaced apartly on body is provided with some openings communicated with this gap.

5. motor as claimed in claim 3, it is characterized in that: circumferentially several tight lock parts of direction gap-forming on the body outer circle wall of this housing, to forming several lugs by several tight lock parts in the main body of this first end cap, the tight lock part that each lug is corresponding with is fixedly connected.

6. motor as claimed in claim 2, it is characterized in that: this second end cap comprises main body and is convexly equipped in main body supports body, on the outer circle wall of this stator, circumferentially direction projection forms installing ring, and this supports body and stretches into the body of this housing and be oppositely arranged with this installing ring.

7. motor as claimed in claim 6, is characterized in that: this supports and spaced apartly on body is provided with some openings communicated with this gap.

8. motor as claimed in claim 2, it is characterized in that: the some installing grooves of recessed formation in the inner body wall of this housing, the outer wall of this stator forms some installing departments, and each installing department to be contained in this installing groove and to be fixedly connected with this first end cap and this second end cap.

9. motor as claimed in claim 2, it is characterized in that: this gap comprises the first gap and the second gap, the first gap that between this inner body wall and this stator outer wall, gap-forming communicates with this free air space and the second gap, this oil filler point is to should arrange and be connected with this first gap in the first gap, and this oil outlet is to should arrange and be connected with this second gap in the second gap.

10. motor as claimed in claim 1, is characterized in that: this rotor lid deviates from the side peripherally projection formation guide rib of rotor block, leads during to circulate in motor to cold oil.