CN202103520U

CN202103520U - Motor

Info

Publication number: CN202103520U
Application number: CN2011201794240U
Authority: CN
Inventors: 马龙波; 吴胜礼
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2011-05-31
Filing date: 2011-05-31
Publication date: 2012-01-04
Anticipated expiration: 2021-05-31

Abstract

Provided is a motor, comprising a stator having a through hole and a rotor arranged inside the through hole of the stator. The motor further comprises a first bearing and a second bearing which are fixedly installed at both ends of the through hole of the stator respectively. Both ends of the rotor are rotatably installed in the through hole of the stator via the first bearing and the second bearing.

Description

A kind of motor

Technical field

The utility model relates to a kind of motor.

Background technology

On most of motor, all need front and rear cover to support whole electric motor system at present; Because front and rear cover is when processing and being assembled on the stator; Can produce a lot of errors and these accumulations of error together, make that motor air gap is not very even, and noise becomes big during motor operation; Thereby influence the performance of motor, increased the cost of motor simultaneously.

A kind of motor for example of the prior art is as shown in Figure 3; Said motor comprises stator 401, is connected in the front end housing 111 and rear end cap 113 of said stator 401 rear and front ends through bolt, and said stator 401 has a through hole 1001; Be provided with motor rotor 501 in the said through hole 1001; Said motor rotor 501 is installed on the armature spindle 101, shown in rotor axis of electric 101 be installed on front end housing 111 and the rear end cap 113 through bearing is rotating owing to have the processing of bolt hole and the error on the location on front end housing 111 and the rear end cap 113; Bolt hole on the stator 401 also exists processing and position error; Be assembled to 401 last times of stator at front end housing 111 and rear end cap 113,, cause the air gap of motor inhomogeneous easily owing to the accumulation of many errors brings circular runout and the axial motion factor that causes rotor 501; And noise becomes big during motor operation, thereby influences the performance of motor.

The utility model content

To the situation that many errors cause the air gap of motor inhomogeneous, noise is big that above-mentioned motor causes on the front and rear cover owing to rotor is installed on, the utility model proposes a kind of motor that need not front and rear cover.

A kind of motor of the utility model; A kind of motor; The interior rotor of through hole that comprises stator and be arranged at said stator with a through hole; Said motor also comprises the clutch shaft bearing and second bearing at the through hole two ends that are fixedly installed in said stator respectively, and said two ends of rotor is through in the rotating through hole that is installed on said stator of clutch shaft bearing and second bearing.

Further, the axial line of the axial line of the axial line of the axial line of said stator, rotor, clutch shaft bearing and second bearing overlaps.

Further, said stator comprises stator core, and said stator core also comprises and is formed in the through hole and has a jut that is used to support winding around along what the axial direction of through hole extended.

Further, said two ends of rotor is through clutch shaft bearing and the rotating two ends that are fixed on said jut of second bearing.

Further, said rotor comprises rotor core, and an end of said rotor core is fixedly mounted on first inner ring of said clutch shaft bearing, and the other end of said rotor core is fixedly installed on second inner ring of second bearing.

Further, the circumferential inner surface interference fit of second outer ring of first outer ring of said clutch shaft bearing and said second bearing and said jut.

Further, the first inner ring interference fit of an end of said rotor core outer circumference surface and said clutch shaft bearing, the second inner ring interference fit of the other end of said rotor core outer circumference surface and said second bearing.

Further; The said clutch shaft bearing and second bearing are rolling bearing; Said clutch shaft bearing comprises first inner ring, first outer ring and is arranged at first ball between said first inner ring and first outer ring that said second bearing comprises second inner ring, second outer ring and is arranged at second ball between said second inner ring and second outer ring.

The beneficial effect of the utility model is that said rotor directly is installed in the said stator through hole through said clutch shaft bearing and said second bearing; Reduced owing to being installed on many errors that front and rear cover brings; Thereby reduced the circular runout that influences rotor and the factor of axial motion, thereby made motor air gap more even, the noise when having reduced motor work; Improved the performance of motor; Thereby reduced cost owing to need not to install front and rear cover, and made structure compact more, assembling and processing technology are simpler.

Description of drawings

The structural representation of a kind of motor that Fig. 1 provides for a kind of execution mode of the utility model.

The decomposing schematic representation of a kind of motor that Fig. 2 provides for a kind of execution mode of the utility model.

Fig. 3 is the structural representation of a kind of motor of prior art.

Embodiment

Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with accompanying drawing and embodiment, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, not in order to restriction the utility model.

Like Fig. 1, shown in Figure 2, a kind of motor of a kind of execution mode of the utility model comprises the rotor 5 in stator 4 with a through hole 10 and the through hole that is arranged at said stator 4 10; Said through hole 10 is a cylindrical hole, and said motor also comprises the clutch shaft bearing 9 and second bearing 8 at through hole 10 two ends that are fixedly installed in said stator 4 respectively.The said clutch shaft bearing 9 and second bearing 8 are used to support said rotor 5, and said rotor 5 is through in the rotating through hole 10 that is installed on said stator 4 of clutch shaft bearing 9 and second bearing 8.The axial line of the axial line of the axial line of the axial line of said stator 4, rotor 5, clutch shaft bearing 9 and second bearing 8 overlaps.

Like Fig. 1, shown in Figure 2; Said clutch shaft bearing 9 comprises that first outer ring 3, outer surface that inner surface has a grooved tracks have first inner ring 2 of a grooved tracks and be arranged at first ball 16 between the grooved tracks of grooved tracks and first inner ring 2 of said first outer ring 3, and said clutch shaft bearing 9 is fixedly installed in an end of the through hole 10 of said stator 4.Said second bearing 8 comprises that second outer ring 6, outer surface that inner surface has a grooved tracks have second inner ring 7 of a grooved tracks and be arranged at second ball 17 between the grooved tracks of grooved tracks and second inner ring 7 of said second outer ring 6; Said second bearing 8 is fixedly installed in the other end of the through hole 10 of said stator 4; One end of said rotor 5 is fixedly installed on first inner ring 2 of said clutch shaft bearing 9, and the other end of said rotor 5 is fixedly installed on second inner ring 7 of said second bearing 8.Said rotor 5 directly is installed in the through hole 10 of said stator 4 through the clutch shaft bearing 9 and second bearing 8; Reduced owing to being installed on many errors that front and rear cover brings; Thereby reduced the factor that influences rotor 5 circular runouts and axial runout; Thereby make that the air gap of said motor is more even, the noise when reducing motor work, the performance of raising motor.

Please continue to combine Fig. 1, shown in Figure 2, said stator 4 comprises stator core 11, insulating barrier 12 and is wrapped in the coil on the said insulating barrier 12; Said stator core 11 comprises and is formed in the through hole 10 and has a jut 15 that is used to support winding around along what the axial direction of through hole 10 extended; The external peripheral surface of said stator core 11 also has the mounting structure 14 of a pair of symmetry, and the mounting structure 14 of said a pair of symmetry divides forming shape two parts all identical with area the external peripheral surface of said stator core 11; Said insulating barrier 12 is installed on the said jut 15 along the axis direction of said through hole 10, install insulating barrier 12 after, said coil is wrapped on the said insulating barrier 12.The said clutch shaft bearing 9 and second bearing 8 are fixedly mounted on the circumferential inner surface of said jut 15; Second outer ring 6 of first outer ring 3 of said clutch shaft bearing 9 and second bearing 8 and the circumferential inner surface interference fit of said jut 15; Said rotor 5 two ends are through clutch shaft bearing 9 and second bearing, the 8 rotating two ends that are fixed on said jut 15; Said rotor 5 comprises rotor core 13; One end of said rotor core 13 is fixedly mounted on first inner ring 2 of said clutch shaft bearing 9; And the outer circumference surface of said rotor core 13 and said first inner ring, 2 interference fit, the other end of said rotor core 13 is fixedly installed on second inner ring 7 of second bearing 8, the outer circumference surface of said rotor core 13 and said second inner ring, 7 interference fit; On the said rotor core 13 armature spindle 1 is installed also, said armature spindle 1 is used to export amount of spin; Because the employing interference fit can be so that the assembling of motor and processing technology be simpler, structure is compact more, simultaneously owing to need not to install the cost that front and rear cover has also reduced motor.

In sum and combine accompanying drawing; When said motor was switched on, said stator 4 coil windings produced the magnetic field of rotation, and said rotor 5 will cut the magnetic line of force of rotating magnetic field and produce induced current; Electric current in the said rotor 5 interacts with rotating magnetic field again and produces electromagnetic force; The electromagnetic torque that electromagnetic force produces drives said rotor 5 and rotates along the rotating magnetic field direction, rotates thereby drive said rotor 5, and the rotation of said rotor 5 outputs to extraneous and acting to external world through armature spindle 1 again.

The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improve, all should be included within the claim protection range of the utility model.

Claims

1. motor; Comprise the rotor (5) in stator (4) with a through hole (10) and the through hole (10) that is arranged at said stator (4); It is characterized in that; Said motor also comprises the clutch shaft bearing (9) and second bearing (8) at through hole (10) two ends that are fixedly installed in said stator (4) respectively, and said rotor (5) two ends are through in the rotating through hole (10) that is installed on said stator (4) of clutch shaft bearing (9) and second bearing (8).

2. a kind of motor according to claim 1 is characterized in that, the axial line of the axial line of the axial line of said stator (4), rotor (5), the axial line of clutch shaft bearing (9) and second bearing (8) overlaps.

3. a kind of motor according to claim 1; It is characterized in that; Said stator (4) comprises stator core (11), and said stator core (11) also comprises and is formed in the through hole (10) and has a jut (15) that is used to support winding around along what the axial direction of through hole (10) extended.

4. a kind of motor according to claim 3, said rotor (5) two ends are through clutch shaft bearing (9) and the rotating two ends that are fixed on said jut (15) of second bearing (8).

5. a kind of motor according to claim 4; It is characterized in that; Said rotor (5) comprises rotor core (13); One end of said rotor core (13) is fixedly mounted on first inner ring (2) of said clutch shaft bearing (9), and the other end of said rotor core (13) is fixedly installed on second inner ring (7) of second bearing (8).

6. a kind of motor according to claim 1 is characterized in that, the circumferential inner surface interference fit of first outer ring (3) of said clutch shaft bearing (9) and second outer ring (6) of said second bearing (8) and said jut (15).

7. a kind of motor according to claim 1; It is characterized in that; First inner ring (2) interference fit of one end of said rotor core (13) outer circumference surface and said clutch shaft bearing (9), second inner ring (7) interference fit of the other end of said rotor core (13) outer circumference surface and said second bearing (8).

8. a kind of motor according to claim 1; Said clutch shaft bearing (9) and second bearing (8) are rolling bearing; Said clutch shaft bearing (9) comprise first inner ring (2), first outer ring (3) and be arranged at said first inner ring (2) and first outer ring (3) between first ball (16), said second bearing (8) comprise second inner ring (7), second outer ring (6) and be arranged at said second inner ring (7) and second outer ring (6) between second ball (17).