CN105226869A - For rotating shaft and the motor of motor - Google Patents
For rotating shaft and the motor of motor Download PDFInfo
- Publication number
- CN105226869A CN105226869A CN201410271771.4A CN201410271771A CN105226869A CN 105226869 A CN105226869 A CN 105226869A CN 201410271771 A CN201410271771 A CN 201410271771A CN 105226869 A CN105226869 A CN 105226869A
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- CN
- China
- Prior art keywords
- rotating shaft
- motor
- circumferential recess
- bearing
- installing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The present invention relates to a kind of rotating shaft for motor, described rotating shaft comprise the output that is positioned at rotating shaft and for installation load part, for install the rotor core of described motor part, for installing near the part of the clutch shaft bearing of described output and the part for installing the second bearing near the rear end contrary with described output, it is characterized in that, in described rotating shaft for described clutch shaft bearing is installed part near be provided with circumferential recess.The present invention relates to the motor comprising this rotating shaft.According to the present invention, reduce the vibration & noise of motor in a straightforward manner.
Description
Technical field
The present invention relates to motor, especially relate to for motor rotating shaft and comprise the motor of this rotating shaft.
Background technology
As well known, motor is generally included and is fixedly fastened on stator on housing and is supported on rotationally on housing and the rotor that rotate in the space that can limit at stator by bearing.Different according to the type of motor, such as, the stator of permanent magnet motor comprises the permanent magnet be fixed on housing, and the stator of exciting motor then comprises stator core and is wrapped in the stator winding on stator core.The rotor windings that the rotor of motor generally includes rotating shaft, is arranged on the rotor core in rotating shaft and is wrapped on rotor core.Certainly, the rotor of switched reluctance motor does not have rotor windings.Can magnetic field be produced when giving the energising of the winding of motor, rotating under the torsional interaction that rotor produces in stator field and rotor field.Due to the physical form of rotor and/or stator core and winding cross section on non complete symmetry, iron core neither be completely balanced and/or the fluctuation of electric current, the magnetic force produced at rotor rotation process rotor and/or stator field is the unbalanced force that there is fluctuation.This unbalanced force makes rotor, stator and hull vibration, and and then causes surrounding air pulse and produce noise.This vibration and noise are delivered to by rotating shaft the load that is positioned on rotating shaft output and are amplified further.
The vibration & noise of motor is one of major criterion weighing motor performance, and the vibration & noise thus reducing motor is as far as possible the target that this area is pursued always.Such as US2013/0342038A1 discloses a kind of method for reducing motor rotation and noise, but the method by arranging the fixture of rotor core laminations group between rotor core laminations group and rotating shaft, and this fixture is set to the connection of the torsion softness of rotor core laminations group and rotating shaft.Need in the method to utilize other accessory, thus, structure relative complex.
Therefore, need to improve existing motor.
Summary of the invention
Object of the present invention will overcome above-mentioned at least one defect of the prior art exactly, proposes a kind of rotating shaft for motor and comprises the motor of this rotating shaft, can be reduced the vibration & noise of motor by them in a straightforward manner significantly.
For this reason, according to an aspect of the present invention, a kind of rotating shaft for motor is provided, described rotating shaft comprise the output that is positioned at rotating shaft and for installation load part, for install the rotor core of described motor part, for installing near the part of the clutch shaft bearing of described output and the part for installing the second bearing near the rear end contrary with described output, it is characterized in that, in described rotating shaft for described clutch shaft bearing is installed part near be provided with circumferential recess.
Alternatively, described circumferential recess be arranged on part for installing described clutch shaft bearing and for described rotor core is installed part between.
Alternatively, described circumferential recess does not extend into the part for installing described rotor core.
Alternatively, described circumferential recess is arranged between the part for installing described clutch shaft bearing and the part for installation load.
Alternatively, described circumferential recess does not extend into the part for installation load.
Alternatively, described circumferential recess be arranged on part for installing described clutch shaft bearing and for described rotor core is installed part between and between the part of installing described clutch shaft bearing and the part for installation load.
Alternatively, the described circumferential recess part that do not extend into the part for installing described rotor core and do not extend into for installation load.
Alternatively, described circumferential recess extends from the part for installing described clutch shaft bearing.
Alternatively, the width of described circumferential recess is not less than 1.5mm.
Alternatively, the ratio of the diameter of the part of described circumferential recess and the diameter of described rotating shaft is formed in the scope of 50-90%.
According to an aspect of the present invention, provide a kind of motor, it is characterized in that, the rotating shaft of described motor is rotating shaft as above.
Alternatively, described motor also comprises:
Housing;
Fixing stator on the housing;
The rotor that can arrange rotatably relative to described stator, the rotor core that described rotor comprises described rotating shaft and is arranged in described rotating shaft, described rotating shaft is supported on the housing rotationally by the second bearing on the rear end of the clutch shaft bearing on the front end of described housing and described housing, and described rotating shaft has protruding from the front end of described housing and for the output of installation load.
Alternatively, described motor is the motor for cooling fan of engine.
According to the present invention, by being provided with circumferential recess for installing near the part of the clutch shaft bearing of rotating shaft output in rotating shaft, suppress vibration and noise using rotating shaft itself as decoupling device by rotating shaft to the load transfer on rotating shaft output, thus reduce the vibration & noise of motor in a straightforward manner.
Accompanying drawing explanation
Fig. 1 is the cross sectional representation of the motor of the rotating shaft comprised according to first preferred embodiment of the invention;
Fig. 1 a is the close-up schematic view of Fig. 1;
Fig. 2 is the cross sectional representation of the motor of the rotating shaft comprised according to second preferred embodiment of the invention; And
Fig. 2 a is the close-up schematic view of Fig. 2.
Embodiment
The preferred embodiments of the present invention are described in detail below in conjunction with example.It will be understood by those skilled in the art that these exemplary embodiments and do not mean that and any restriction is formed to the present invention.
Fig. 1 is the cross sectional representation of the motor of the rotating shaft comprised according to first preferred embodiment of the invention, and Fig. 1 a is the close-up schematic view of Fig. 1.Permanent magnet motor in FIG for cooling fan of engine is that present invention is described for example.As illustrated in figures 1 and ia, motor 1 comprise housing 3, be fixed on the stator 5 on housing and be arranged on space that stator limits in rotor 7.Stator 5 is made up of permanent magnet 9 in FIG.The rotor windings 15 that the rotor 7 of motor generally includes rotating shaft 11, is arranged on the rotor core 13 in rotating shaft and is wrapped on rotor core 13.Rotating shaft 11 is supported on housing 3 rotationally by the second bearing 23 on the rear end 21 of the clutch shaft bearing 19 on the front end 17 of housing 3 and housing 3, thus rotates in the space that whole rotor 7 can be limited at stator.Although in a preferred embodiment, clutch shaft bearing 19 is shown as ball bearing, and the second bearing 23 is shown as stephanoporate oil-retaining bearing, it should be understood that clutch shaft bearing 19 and the second bearing 23 can be can any suitable bearing of supporting revolving shaft 11 rotationally.The output 11a of front end namely for installation load of rotating shaft 11 is protruding from the front end 17 of housing 3.Because motor 1 is in a preferred embodiment permanent magnet motor, motor 1 also comprises the brush assembly of electric 25 of the rear end 21 being arranged on housing 3 and is arranged on the commutator 27 of rear end 11b of rotating shaft 11.Brush assembly of electric 25 and commutator 27 cooperatively interact to change the sense of current flowing through rotor windings 15.
According to the present invention, in rotating shaft 11 for install near rotating shaft 11 output 11a clutch shaft bearing 19 part near be provided with circumferential recess 29.In a first preferred embodiment, circumferential recess 29 is arranged in the rotating shaft 11 between clutch shaft bearing 19 and rotor core 13.Preferably, circumferential recess 29 extends towards rotor core 13 direction from the part for installing clutch shaft bearing 19.The rotating shaft part meaning that circumferential recess 29 can not extend into clutch shaft bearing 19 and contacts is extended from the part for installing clutch shaft bearing 19.In order to prevent reducing from rotor core 13 to the ability of rotating shaft 11 transmitting torque, circumferential recess 29 does not preferably extend into the rotating shaft part that rotor core 13 contacts yet.For various dissimilar motor, the width B of circumferential recess 29 is not less than 1.5mm.For the rotating shaft 11 that diameter is D, the diameter D1 being formed with the part of circumferential recess 29 is preferably the ratio of D1/D in the scope of 50-90%.
Fig. 2 is the cross sectional representation of the motor of the rotating shaft comprised according to second preferred embodiment of the invention, and Fig. 2 a is the close-up schematic view of Fig. 2.The second preferred embodiment shown by Fig. 2 and Fig. 2 a and above-mentioned first preferred embodiment substantially similar, except the part difference set by circumferential recess 29.For brevity, the description to the second preferred embodiment part identical with the first preferred embodiment is eliminated.In the second preferred embodiments, the output 11a of rotating shaft 11 is equipped with fan connector 31.Circumferential recess 29 is arranged in the rotating shaft 11 between clutch shaft bearing 19 and fan connector 31.Preferably, circumferential recess 29 extends towards fan connector 31 direction from the part for installing clutch shaft bearing 19.The rotating shaft part meaning that circumferential recess 29 can not extend into clutch shaft bearing 19 and contacts is extended from the part for installing clutch shaft bearing 19.In order to prevent reducing from rotating shaft 11 to the ability of fan connector 31 transmitting torque, circumferential recess 29 does not preferably extend into the rotating shaft part that fan connector 31 contacts yet.
In above preferred embodiment, circumferential recess 29 is arranged in rotating shaft 11 for installing the either side of the part of the clutch shaft bearing 19 of the output 11a near rotating shaft 11, be understood that, it is also feasible that circumferential recess 29 to be arranged in rotating shaft 11 for installing the both sides of the part of clutch shaft bearing 19, such as, between clutch shaft bearing 19 and rotor core 13 and between clutch shaft bearing 19 and fan connector 31, circumferential recess 29 is all provided with.
According to the present invention, by being provided with circumferential recess for installing near the part of the clutch shaft bearing of rotating shaft output in rotating shaft, suppress vibration and noise using rotating shaft itself as decoupling device by rotating shaft to the load transfer on rotating shaft output, thus reduce the vibration & noise of motor in a straightforward manner.By the circumferential recess in this rotating shaft of the present invention as decoupling device, both can reduce the wave amplitude of vibration & noise, the frequency of vibration & noise can also be reduced.And, in the present invention, the maximum torque transfer ability from rotor core to rotating shaft can be guaranteed when the circumferential recess as decoupling device does not extend into the rotating shaft part that rotor core contacts.Equally, the maximum torque transfer ability from turning axial load can be guaranteed when the circumferential recess as decoupling device does not extend into the rotating shaft part that load contacts.
Below in conjunction with specific embodiments to invention has been detailed description.Obviously, above description and embodiment illustrated in the accompanying drawings all should be understood to be exemplary, and are not construed as limiting the invention.Although the permanent magnet motor in a preferred embodiment for cooling fan of engine is that invention has been described for example, but be understood that the present invention is suitable for the engine of any type comprising rotor and stator, such as exciting motor or switched reluctance motor.The purposes of motor is also not limited to the cooling fan for driving engine, can be the motor driving any load.To those skilled in the art, can carry out various modification or amendment when not departing from spirit of the present invention to it, these modification or amendment all do not depart from the scope of the present invention.
Claims (9)
1. the rotating shaft for motor (1) (11), described rotating shaft (11) comprises the output (11a) that is positioned at rotating shaft and for the part of installation load, for installing the part of the rotor core (13) of described motor (1), for installing the part of the clutch shaft bearing (19) near described output (11a), and for installing the part of the second bearing (23) near the rear end contrary with described output (11a), it is characterized in that, in described rotating shaft (11) for described clutch shaft bearing (19) are installed part near be provided with circumferential recess (29).
2. the rotating shaft for motor (1) according to claim 1 (11), it is characterized in that, described circumferential recess (29) does not extend into part for installing described rotor core (13) and/or described circumferential recess (29) and does not extend into part for installation load.
3. the rotating shaft for motor (1) according to claim 1 (11), it is characterized in that, described circumferential recess (29) be arranged on part for installing described clutch shaft bearing (19) and for described rotor core (13) are installed part between and/or between the part of installing described clutch shaft bearing (19) and the part for installation load.
4. the rotating shaft for motor (1) according to claim 1 (11), is characterized in that, described circumferential recess (29) extends from the part for installing described clutch shaft bearing (19).
5. the rotating shaft for motor (1) according to claim 1 (11), is characterized in that, the width (B) of described circumferential recess (29) is not less than 1.5mm.
6. the rotating shaft for motor (1) according to claim 1 (11), it is characterized in that, be formed with the ratio of the diameter (D1) of the part of described circumferential recess (29) and the diameter (D) of described rotating shaft (11) in the scope of 50-90%.
7. a motor, is characterized in that, the rotating shaft (11) of described motor be as arbitrary in claim 1-6 as described in rotating shaft.
8. motor according to claim 7, is characterized in that, described motor also comprises:
Housing (3);
Be fixed on the stator (5) on described housing (3);
The rotor (7) that can arrange rotatably relative to described stator (5), described rotor (7) comprises described rotating shaft (11) and is arranged on the rotor core (13) in described rotating shaft (11), described rotating shaft (11) is supported on described housing (3) by the second bearing (23) on the rear end (21) of the clutch shaft bearing (19) on the front end (17) of described housing (3) and described housing (3) rotationally, and described rotating shaft (11) has protruding from the front end (17) of described housing (3) and for the output (11a) of installation load.
9. motor according to claim 8, is characterized in that, described motor is the motor for cooling fan of engine.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410271771.4A CN105226869A (en) | 2014-06-18 | 2014-06-18 | For rotating shaft and the motor of motor |
| KR1020150084980A KR20150145190A (en) | 2014-06-18 | 2015-06-16 | Axis of rotation for motor and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410271771.4A CN105226869A (en) | 2014-06-18 | 2014-06-18 | For rotating shaft and the motor of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105226869A true CN105226869A (en) | 2016-01-06 |
Family
ID=54995643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410271771.4A Pending CN105226869A (en) | 2014-06-18 | 2014-06-18 | For rotating shaft and the motor of motor |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20150145190A (en) |
| CN (1) | CN105226869A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004135416A (en) * | 2002-10-09 | 2004-04-30 | Nidec Shibaura Corp | Motor |
| CN103812262A (en) * | 2012-11-13 | 2014-05-21 | 博泽沃尔兹堡汽车零部件有限公司 | Electric motor, especially steering motor, for motor vehicle |
-
2014
- 2014-06-18 CN CN201410271771.4A patent/CN105226869A/en active Pending
-
2015
- 2015-06-16 KR KR1020150084980A patent/KR20150145190A/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004135416A (en) * | 2002-10-09 | 2004-04-30 | Nidec Shibaura Corp | Motor |
| CN103812262A (en) * | 2012-11-13 | 2014-05-21 | 博泽沃尔兹堡汽车零部件有限公司 | Electric motor, especially steering motor, for motor vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20150145190A (en) | 2015-12-29 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160106 |