CN203104242U - Servo motor - Google Patents
Servo motor Download PDFInfo
- Publication number
- CN203104242U CN203104242U CN201220565168.3U CN201220565168U CN203104242U CN 203104242 U CN203104242 U CN 203104242U CN 201220565168 U CN201220565168 U CN 201220565168U CN 203104242 U CN203104242 U CN 203104242U
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- motor
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Abstract
A servo motor comprises a stator and a rotor which are mounted in a matched manner, the number of stator slots and the number of rotor magnet steel poles are matched to enable the actual span of a stator winding element to satisfy y=1, and an air gap of the motor is designed to be between 0.25mm to 0.65mm. The utility model is mainly directed at a permanent magnet direct current brushless/permanent magnet alternating current servo motor of present thinking, and in design, the number of stator slots and the number of rotor magnet steel poles of the motor are matched more reasonably, enabling the actual span of the stator winding element to satisfy y=1, so that elements of different grooves do not overlap at an end part of the winding, reducing dimension space of the end part of the winding; and the air gap of the motor is designed to be between 0.25mm to 0.65mm, improving the utilization rate of magnetic steel, and by adjusting the electromagnetic load of the motor, the overall volume is decreased by at least 30% compared with an existing motor. To further decrease the volume of the motor, in structural design, an axial position of a motor bearing is extended to inside a rotor core.
Description
Technical field
The utility model discloses a kind of servomotor, and particularly a kind of thinking rides instead of walk/and balance car is with the permanent-magnet DC brushless/permanent magnetic Ac servo motor of small size, high force-energy index.
Background technology
Thinking rides instead of walk/and balance car is a novel electric vehicle that occurs in recent years.It is regulated by the center of gravity of self human body, carries out Based Intelligent Control, makes car body occur advancing, retreat and motion mode such as turning, keeps dynamic equilibrium.The power section that is used for now on such car mainly is made up of on-vehicle battery, permanent-magnet DC brushless or permanent magnetic Ac servo motor and control system and decelerator etc.The motor volume of this power section at present is bigger, is unfavorable for body construction layout and installation, influences product improvement and upgrading, thereby causes cost to rise.
Cause existing thinking ride instead of walk/main cause that the motor volume of balance car is bigger is as follows:
1) collocation of the number of stator slots of existing motor and rotor magnetic steel number of poles is not good, actual stride y 〉=2 that the element of winding occurs, the element of different slots is overlapping at winding overhang in the stator, cause the stator winding end size bigger, motor needs bigger winding overhang empty avoiding space, has increased motor volume.
2) air gap of existing motor is greater than 0.65mm, and undue harmonic wave electromotive force and the slot effect of considering that design thus brings influences, and the magnet steel performance fails to be not fully exerted, and needs bigger motor volume to satisfy performance requirement.
Summary of the invention
Ride instead of walk/the bigger shortcoming of motor volume in the balance car at the above-mentioned thinking of mentioning of the prior art, the utility model provides a kind of and new be used for thinking and ride instead of walk/and balance car is with the permanent-magnet DC brushless/permanent magnetic Ac servo motor of small size, high force-energy index, combined process, it adopts better number of stator slots and the rotor number of poles stator winding element actual stride of arranging in pairs or groups out, simultaneously with the kind of air-gap design of motor between 0.25mm-0.65mm, can reduce motor volume greatly.
The technical scheme that its technical problem of solving the utility model adopts is: and a kind of thinking rides instead of walk/and balance car is with the permanent-magnet DC brushless/permanent magnetic Ac servo motor of small size, high force-energy index, motor comprises stator and the rotor that cooperatively interacts and install, and it is y=1 that number of stator slots and rotor magnetic steel number of poles mix into stator winding element actual stride.
The technical scheme that its technical problem that solves the utility model adopts further comprises:
Described motor gas-gap is 0.25mm-0.65mm.
Described number of stator slots and the collocation of rotor number of poles are 12 grooves, 8 utmost points, 12 grooves, 10 utmost points, 12 grooves, 14 utmost points, 9 grooves, 10 utmost points or 9 grooves, 8 utmost points.
Be set with the clutch shaft bearing and second bearing on the axle of described rotor, on the electric motor end cap shell, the clutch shaft bearing and/or the second bearing axial location extend to rotor core inside to rotor by clutch shaft bearing and second Bearing Installation.
On the described rotor magnet steel is installed, the magnet steel two ends are provided with the step of external diameter less than the maximum outer arc of magnet steel surface external diameter, are installed with the magnet steel securing member on the step.
Described magnet steel securing member cross section can be " straight tube " shape, or " annular groove " shape or " worker " font.
The beneficial effects of the utility model are: the utility model is primarily aimed at current thinking and rides instead of walk/balance car permanent-magnet DC brushless/permanent magnetic Ac servo motor, when design, motor stator slot number and rotor magnetic steel number of poles are done more rational collocation, allow stator winding element actual stride y=1, cause the element of different slots can not overlap, to reduce the winding overhang dimensional space at winding overhang; Simultaneously with the kind of air-gap design of motor between 0.25mm-0.65mm, improve the utilance of magnet steel, by adjusting the electromagnetic load of motor, reduce the volume of motor, make it reduce 30% at least than existing volume with motor.When structural design, the axial location of motor bearings is extended in the rotor core.
Below in conjunction with the drawings and specific embodiments the utility model is described further.
Description of drawings
Fig. 1 is a motor gas-gap structural representation in the utility model.
Fig. 2 is a motor gas-gap structural representation in the utility model.
Fig. 3 is a motor gas-gap structural representation in the utility model.
Fig. 4 is a motor gas-gap structural representation in the utility model.
Fig. 5 is the utility model magnet steel fastener embodiment one cross-sectional view.
Fig. 6 is the utility model magnet steel fastener embodiment two cross-sectional view.
Fig. 7 is the utility model magnet steel fastener embodiment three cross-sectional view.
Fig. 8 is the utility model magnet steel fastener embodiment four cross-sectional view.
Fig. 9 is the utility model cross-sectional view.
Among the figure, 1-stator core, 2-magnet steel securing member, 3-magnet steel, 4-rotor core, 5-axle, the 6-first magnet steel sheath, the 7-second magnet steel sheath, 8-stator, 9-rotor, 10-clutch shaft bearing, 11-second bearing.
Embodiment
Present embodiment is the utility model preferred implementation, and other all its principles are identical with present embodiment or approximate with basic structure, all within the utility model protection range.
The utility model number of stator slots and the collocation of rotor magnetic steel number of poles take into account the manufacturability that motor is made simultaneously, and stator winding element actual stride is y=1, in the present embodiment, the motor stator slot number that can select and the collocation of rotor magnetic steel number of poles are that (be that number of stator slots is 9, the rotor magnetic steel number of poles is 8 to 9 grooves, 8 utmost points, other do similar explanation), 9 grooves, 10 utmost points, 12 grooves, 8 utmost points, 12 grooves, 10 utmost points, the collocation of 12 grooves, 14 utmost points is wherein preferentially used 12 grooves, 10 utmost points, 12 grooves, 14 utmost points, 9 grooves, 10 utmost points, 9 grooves, 8 utmost points.The utility model structure is applicable in non-brush permanent-magnet DC motor or the permanent magnetic Ac servo motor.
In the utility model, motor gas-gap is between the 0.25mm-0.65mm, and the implication of motor gas-gap is:
A. for rotor magnetic steel externally embedded type and surface-mount type motor, the air gap of motor is meant frame bore to the average distance between the rotor magnetic steel outer arc surface, but not frame bore is to the distance on other part of rotor surface (magnet steel sheath or other magnet steel securing member) surface.
B. be embedded motor for rotor magnetic steel, the air gap of motor is meant that frame bore is to the average distance between the rotor magnetic conduction extrados.
Please referring to accompanying drawing 1 and accompanying drawing 3, the motor gas-gap δ=R1-R2 among Fig. 1 and Fig. 3;
Please referring to accompanying drawing 2 and accompanying drawing 4, the motor gas-gap δ of Fig. 2 and Fig. 4=2* δ min* δ max/(δ min+ δ max).
Simultaneously, except motor gas-gap, also will take into account every performance index of motor and motor manufacturing technology during design of electrical motor, electric machine structure can adopt following structure:
1) rotor magnetic steel adopts the oblique utmost point, and the straight trough structure is adopted in the stator core that adapts with it, and stator core can be taked integral type, also can take expansion or split split mounting type.
2) rotor magnetic steel is not done the oblique utmost point and is handled the stator core employing flume structure that adapts with it.
3) for many to the utmost point integral radiation ring magnet steel that magnetizes, magnet steel does not need securing member.
4) for non-many monolithics magnet steel that magnetizes to the polar radiations ring, if the inter-air space of motor does not have the radial dimension space that the magnet steel securing member is installed, the part of can not integral installation in the inter-air space of motor strengthening fastening magnet steel, then can reserve or process the proper width space in the rotor magnetic steel end, form the step cambered surface of one section external diameter less than magnet steel outer surface external diameter, used for the securing member installation site, please referring to accompanying drawing 5, Fig. 6, Fig. 7 and Fig. 8, in the present embodiment, magnet steel 3 two ends are provided with the step of external diameter less than magnet steel outer surface external diameter, be installed with magnet steel securing member 2 on the step, be used for magnet steel 3 is fixed on rotor core, in the present embodiment, magnet steel securing member 2 is the first magnet steel sheath 6 and the second magnet steel sheath 7, is fixedly mounted on magnet steel 3 two ends respectively.In the present embodiment, magnet steel securing member 2 cross sections can be " straight tube " shape, or " annular groove " shape, or " worker " font, magnet steel securing member 2 cross sections among Fig. 5 and Fig. 6 are " straight tube " shape, among Fig. 5, magnet steel securing member 2 extends to magnet steel 3 outsides, and among Fig. 6, magnet steel securing member 2 is concordant with magnet steel 3 outside end faces, among Fig. 7, magnet steel securing member 2 cross sections are " annular groove " shape, are coated on the magnet steel 3, among Fig. 8, magnet steel securing member 2 cross sections are " worker " font, are fixedly mounted on end, magnet steel 3 outside.In the utility model, if when motor gas-gap adopts 0.5mm-0.65mm, securing member may integral body be enclosed within the magnet steel outside, and its structure has just been had any problem to 0.25mm-0.5mm if motor gas-gap is little as shown in Figure 9, and securing member need adopt as structure among Fig. 5 to Fig. 8.
Please referring to accompanying drawing 9, in the present embodiment, electric machine structure mainly comprises stator 8 and rotor 9, wherein, rotor 9 inside are axle 5, and axle 5 outsides are set with rotor core 4, and rotor core 4 outsides are fixedly installed on magnet steel 3, stator 8 is fixedly mounted on the shell, rotor 9 is inserted in the stator 8, it can be relatively rotated, in the present embodiment, be set with bearing on the axle 5, in the end cap of motor housing, in the present embodiment, axle 5 one ends are equipped with clutch shaft bearing 10 to rotor 9 by Bearing Installation, the other end is equipped with second bearing 11, the clutch shaft bearing 10 and second bearing 11 are inlaid in the electric motor end cap, and in the present embodiment, the clutch shaft bearing 10 and second bearing 11 have part to extend internally, extend in the rotor core 4, can further dwindle the volume of motor.
The utility model is primarily aimed at current thinking and rides instead of walk/balance car permanent-magnet DC brushless/permanent magnetic Ac servo motor, when design, motor stator slot number and rotor magnetic steel number of poles are done more rational collocation, allow stator winding element actual stride y=1, cause the element of different slots can not overlap, to reduce the winding overhang dimensional space at winding overhang; Simultaneously with the kind of air-gap design of motor between 0.25mm-0.65mm, improve the utilance of magnet steel, by adjusting the electromagnetic load of motor, make it reduce 30% at least than existing volume with motor.In order further to reduce the volume of motor, when structural design, the axial location of motor bearings is extended in the rotor core.
Claims (7)
1. servomotor is characterized in that: described motor comprises stator and the rotor that cooperatively interacts and install, and it is y=1 that number of stator slots and rotor magnetic steel number of poles mix into stator winding element actual stride.
2. servomotor according to claim 1 is characterized in that: described number of stator slots and the collocation of rotor number of poles are 12 grooves, 8 utmost points, 12 grooves, 10 utmost points, 12 grooves, 14 utmost points, 9 grooves, 10 utmost points or 9 grooves, 8 utmost points.
3. servomotor according to claim 1 is characterized in that: described motor gas-gap is 0.25mm-0.65mm.
4. according to claim 1 or 2 or 3 described servomotors, it is characterized in that: described magnet steel is fixedly mounted in the rotor core, be set with the clutch shaft bearing and second bearing on the armature spindle, on electric motor end cap, the axial location of the clutch shaft bearing or second bearing extends to rotor core inside to rotor by clutch shaft bearing and second Bearing Installation.
5. according to claim 1 or 2 or 3 described servomotors, it is characterized in that: described magnet steel is fixedly mounted in the rotor core, be set with the clutch shaft bearing and second bearing on the armature spindle, on electric motor end cap, the axial location of the clutch shaft bearing and second bearing extends to rotor core inside to rotor by clutch shaft bearing and second Bearing Installation.
6. according to claim 1 or 2 or 3 described servomotors, it is characterized in that: on the described rotor magnet steel is installed, the magnet steel two ends can be provided with the step of external diameter less than the maximum outer arc of magnet steel surface external diameter, are installed with the magnet steel securing member on the step.
7. servomotor according to claim 6 is characterized in that: described magnet steel securing member cross section can be " straight tube " shape, or " annular groove " shape or " worker " font.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220565168.3U CN203104242U (en) | 2012-10-31 | 2012-10-31 | Servo motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220565168.3U CN203104242U (en) | 2012-10-31 | 2012-10-31 | Servo motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203104242U true CN203104242U (en) | 2013-07-31 |
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ID=48855617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220565168.3U Expired - Fee Related CN203104242U (en) | 2012-10-31 | 2012-10-31 | Servo motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203104242U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105743314A (en) * | 2016-05-06 | 2016-07-06 | 吕三元 | Brushless energy-saving automobile motor of highly efficient new energy rare earth permanent magnet direct-current |
| CN105896867A (en) * | 2016-05-31 | 2016-08-24 | 德州杰诺新能源有限公司 | Permanent magnet motor of super-efficient 10-pole 12-slot magnetic steel built-in line-styled rotor structure |
-
2012
- 2012-10-31 CN CN201220565168.3U patent/CN203104242U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105743314A (en) * | 2016-05-06 | 2016-07-06 | 吕三元 | Brushless energy-saving automobile motor of highly efficient new energy rare earth permanent magnet direct-current |
| CN105896867A (en) * | 2016-05-31 | 2016-08-24 | 德州杰诺新能源有限公司 | Permanent magnet motor of super-efficient 10-pole 12-slot magnetic steel built-in line-styled rotor structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151208 Address after: 529000 Longwan Road, Guangdong, China, No. 8, No. Patentee after: NEW MARTIN (JIANGMEN) ELECTRIC TECHNOLOGY Co.,Ltd. Address before: 518000 Guangdong city of Shenzhen province Baoan District Shajing Town Center Lulisha Huadu D1-1-1003 Patentee before: Mao Zhengxiang |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20211031 |