CN104578568A - Motor - Google Patents
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- Publication number
- CN104578568A CN104578568A CN201310507393.0A CN201310507393A CN104578568A CN 104578568 A CN104578568 A CN 104578568A CN 201310507393 A CN201310507393 A CN 201310507393A CN 104578568 A CN104578568 A CN 104578568A
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- CN
- China
- Prior art keywords
- motor
- stator
- rotor
- magnetic pole
- rotating shaft
- Prior art date
- 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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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/34—Reciprocating, oscillating or vibrating parts of the magnetic circuit
Abstract
The invention relates to a motor which comprises a casing, a rotating shaft, a stator, a rotator and an actuating mechanism, wherein the rotating shaft is mounted on the casing through a rotating pair and has a central axis; the stator is mounted in the casing through a moving pair, moves axially along the central axis and is provided with a stator pole coil winding; the rotator is mounted on the rotating shaft, and a plurality of rotator magnetic poles are arranged on the peripheral surface of the rotator; the actuating mechanism acts on the stator and drives the stator to move axially. According to the motor provided by the invention, the stator can move axially.
Description
Technical field
The present invention relates to a kind of motor, particularly relate to a kind of motor of stator shaft orientation movement.
Background technology
Permanent magnetic brushless is as one efficient electric energy/rotational energy conversion equipment, and efficiency is high, structure is simple, be applicable to high-speed cruising, is widely used in motorcycle, automobile, wind power generation etc.
There is linear relationship in the Driving Torque of the sum of products motor of permanent magnetic brushless builtin voltage and electric current.Under magnetoelectric effect effect, when motor rotation, its inside can produce " opposing " motor speed and raise " back electromotive force ".Along with the lifting of rotating speed, because the core loss of electromagnetic induction generation, rotor eddy current loss can sharply rise, cause motor temperature to rise fast simultaneously.When motor is in no-load condition, this loss is especially obvious, such as using permanent magnetic brushless as on the motor generator of generator, when there is no motor load, because core loss motor still can the energy that sends of consumption of engine, rotating speed is higher more obvious, under some operating condition various " induction losses " (comprising the copper loss, rotor eddy current loss etc. of stator iron loss, coil) of motor and the ratio of engine net power high, not only consume the energy of engine, and cause organism temperature to rise, affect heat radiation and the life-span of engine.
In addition in some other application scenario; permanent magnetic brushless limit due to its mechanical structure; the rated power of motor is definite value all the time; in order to improve Acceleration of starting performance when motor uses as motor; usually the larger Driving Torque of motor can be set; in the case, the speed adjustable range of motor is also severely limited.
Publication number is in the patent of invention of CN1639947A, has set forth a kind of motor by the movement of linkage drive motor rotor axial, and its rotor, by axial movement, changes the size of magnetic flux, thus realizes the object improving magneto speed ability.Be rotor owing to being control object, in this type of high-speed rotary turntable, therefore realize the movement in other direction, make mechanism comparatively complicated, and reliability also has very large risk.
Summary of the invention
Because the defect existing for above-mentioned prior art, the object of the invention is to, a kind of motor is provided, its stator can be moved axially.
To achieve these goals, according to the present invention propose a kind of permanent magnetic brushless it comprise: housing; Rotating shaft, is installed on this housing by revolute, and this rotating shaft has central axis; Stator, be installed in this housing by moving sets, moving axially along this central axis, this stator has magnetic pole of the stator coil windings; Rotor, be installed on this rotating shaft, this rotor flank is provided with multiple rotor magnetic pole; And actuator, act on this stator, drive this stator shaft orientation to move.
The present invention also can be applied to the following technical measures to achieve further.
Aforesaid motor, wherein said rotor magnetic pole is permanent magnet, or described rotor magnetic pole is magnetic pole of the stator coil windings.
Aforesaid motor, wherein said revolute is swivel bearing.
Aforesaid motor, wherein said moving sets is linear bearing, or the mating of groove and key, or the mating of slide block and guide rail.
Aforesaid motor, wherein said actuator provides execution power by cylinder, oil cylinder, battery valve or stepping motor.
Aforesaid motor, wherein said stator is positioned at the inner peripheral surface of this rotor, or this stator is positioned at the outer peripheral face of this rotor.
Aforesaid motor is permanent magnetic brushless, the magneto of motorcycle, car wheel electromotor or wind-driven generator.
In sum, motor of the present invention, by moving axially stator, relative position between stator and rotor is regulated to change the magnetic field intensity in iron core and coil, the electromagnetic induction reducing iron core and the coil caused because of changes of magnetic field loses (usually said copper loss, iron loss etc.), especially the electromagnetic induction loss under no-load condition, and the power of motor can be regulated.
The present invention compared with prior art has obvious advantage and beneficial effect.By technique scheme, motor of the present invention, at least has following advantages:
One, motor of the present invention, stator can move axially.
Two, motor of the present invention is compared with the immovable motor of stator, significantly can reduce the magnetic induction loss (copper loss etc. of the iron loss of stator, the eddy current loss of rotor, coil under no-load condition.）。With regard to 150cc motorcycle, motor of the present invention is the highest can reduce oil consumption more than 20%.
Three, motor of the present invention, owing to significantly can reduce various magnetic induction loss, therefore motor temperature is reduced, and contributes to extending electrical machinery life.
Four, motor of the present invention, compared with the immovable magneto of stator, any change of power can be realized within the scope of maximum allowable power, simultaneously because power adjustments is realized by the magnetic flux of change coil and iron core, therefore motor in running order under magnetic induction loss be also reduced, improve the efficiency of motor under Smaller load state.
Five, motor of the present invention, compares with the moveable motor of rotor, and owing to being the position of the stator changing it goes without doing high speed rotary motion, the number of spare parts therefore needed is few, simple and reliable for structure, reduces because the lubrication that causes of high speed rotary motion and wear problem.
Six, motor of the present invention, be provided with stator return spring, the elastic force of the spring suffered by stator is contrary with magnetic attraction direction, makes stator move required actuating force and significantly reduces, reduce the power requirement to executive item, and in position of stator process, there is cushioning effect.
Accompanying drawing explanation
Fig. 1 is the end view of motor first embodiment of the present invention.
Fig. 2 is the cross-sectional schematic of motor first embodiment of the present invention.
Fig. 3 is the end view of motor second embodiment of the present invention.
Fig. 4 is the cross-sectional schematic of motor second embodiment of the present invention.
Fig. 5 is the end view of motor of the present invention 3rd embodiment.
Fig. 6 is the cross-sectional schematic of motor of the present invention 3rd embodiment.
Embodiment
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, its embodiment of motor proposed according to the present invention, step, structure, feature and effect thereof are described in detail.
Referring to shown in Fig. 1, Fig. 2, is end view, the cross-sectional schematic of motor first embodiment of the present invention respectively.The motor of first embodiment of the invention, comprises housing 1, stator 4, rotating shaft 13, rotor 2 and actuator 9 (9a and 9b).
Above-mentioned housing 1 has spatial accommodation.
Above-mentioned rotating shaft 13 is installed on the left side (not shown) of this housing 1 by bearing, and this rotating shaft 13 has central axis CL.
Above-mentioned rotor 2 is arranged on rotating shaft 13, and fix with bolt 11, the centre of gyration of this rotor 2 overlaps with this central axis CL, and this rotor 2 rotates together with rotating shaft 13, and this rotor 2 is circumferentially provided with rotor magnetic pole 3.In the present embodiment, this rotor magnetic pole 3 is permanent magnets, and rotor magnetic pole 3 also can be rotor winding coil in other embodiments.
Above-mentioned stator 4 is circumferentially provided with stator winding coil, the Center-to-Center dead in line of stator 4; This stator 4 is installed on the inside of housing 1 by moving sets.In the present embodiment, this moving sets comprises the splined shaft 14 being arranged at housing 1, and is arranged at the groove of stator 4, and key and the groove of this splined shaft 14 match.In other embodiments, this moving sets can be linear bearing, or the mating of slide block and guide rail, or the mating of guide post and pilot hole.
Above-mentioned actuator 9 (9a and 9b) acts on this stator 4, drives this stator shaft orientation to move.In the present embodiment, this actuator 9 comprises connector 7 and executive item 9a.This connector 7 one end is connected to the output 9b of executive item 9a, and the other end is by rivet 15 connecting stator 4; This executive item 9a is fixed on the left side of shell 1 inside, and the output 9b of executive item 9a is connected with connector 7 check ring 10 through the centre bore of this splined shaft 14.This executive item 9a is such as electromagnetically operated valve, cylinder, hydraulic cylinder or stepping motor (servomotor).This executive item 9a and housing 1 junction are provided with cover plate 8, prevent dust, rainwater from invading in housing.
When the motor of the present embodiment uses, executive item 9a promotes or pulls connector 7 that stator 4 is moved linearly along splined shaft 14, changes the axial distance between stator 4 and rotor 3, thus changes the power of motor.When needs increase power of motor, then executive item 9a promotes stator 4 towards rotor direction motion, until appropriate location; Otherwise then executive item pulls stator 4 to appropriate location.If executive item is stepping motor, then stator can stop the optional position in displacement range, if executive item is electromagnetically operated valve or the similar device that can only provide two positions, then stator can rest on maximum and minimum two fixed positions.
Referring to shown in Fig. 3, Fig. 4, is end view, the cross-sectional schematic of motor second embodiment of the present invention respectively.
The motor of the second embodiment is compared with the first embodiment, the main distinction is that stator 4 does not arrange groove, the connector 7 be connected with stator 4 is provided with external splines, the inner surface of splined shaft 14 is provided with internal spline (groove), connector 7 and splined shaft 14 form mating of key and groove, move axially pair to make to be formed between stator 4 and housing 1.The benefit of this arrangement is the processing and the installation that simplify stator 4.
Referring to shown in Fig. 5, Fig. 6, is end view, the cross-sectional schematic of motor of the present invention 3rd embodiment respectively.The motor of the 3rd embodiment and the main distinction of the second embodiment are to add and Figure 6 shows that three bolts 5 along stator bolt 5(circumferentially), and be enclosed within the stator return spring 6 on bolt 5.Spring 6 one end is pressed on the step of stator 4 bolt hole, and other one section is pressed in bolt 5 shoulder; Spring 6 is subject to compressing generation pretightning force in various degree in installment state and the course of work, this pretightning force is contrary with the magnetic attraction of the rotor 2 that stator 4 is subject to, in any service position of stator, pretightning force is all the time slightly larger than the magnetic attraction of permanent magnet 3 pairs of stators 4 of rotor 2.Executive item 9a only needs the thrust providing a vector being greater than initial tension of spring and magnetic attraction to make a concerted effort, and stator 4 can be driven to move towards rotor 2; When the vector that the thrust of executive item 9a is less than initial tension of spring and magnetic attraction is made a concerted effort, namely stator 4 moves towards the direction away from rotor 2.When the displacement of executive item 9a is minimum, stator 4 is pressed on shell 1 by spring 6, and now stator 4 from rotor distance farthest, and power and magnetic induction are lost all minimum.The advantage of this embodiment is to significantly reduce the power requirement to executive item 9a.
For above-mentioned specific embodiment, those skilled in the art can carry out multiple amendment and modification to it, such as, change the spline that is connected with between stator 4 and housing 1 into sliding bearing, increases positioning apparatus for circumferential direction (as alignment pin) simultaneously; Or rotor is arranged on inside stator.
Above-mentioned motor is such as permanent magnetic brushless, the magneto of motorcycle, car wheel electromotor (recover kinetic energy braking motor) or wind-driven generator, but not as limit.
Motor of the present invention, compared with the immovable motor of stator, significantly can reduce the magnetic induction loss (copper loss etc. of the iron loss of stator, the eddy current loss of rotor, coil under no-load condition.）。With regard to 150cc motorcycle, motor of the present invention is the highest can reduce oil consumption more than 20%.
Motor of the present invention, owing to significantly can reduce various magnetic induction loss, therefore motor temperature is reduced, and contributes to extending electrical machinery life.
Motor of the present invention, compared with the immovable magneto of stator, any change of power can be realized within the scope of maximum allowable power, simultaneously because power adjustments is realized by the magnetic flux of change coil and iron core, therefore motor in running order under magnetic induction loss be also reduced, improve the efficiency of motor under Smaller load state.
Motor of the present invention, compares with the moveable motor of rotor, and owing to being the position of the stator changing it goes without doing high speed rotary motion, the number of spare parts therefore needed is few, simple and reliable for structure, reduces because the lubrication that causes of high speed rotary motion and wear problem.
Motor of the present invention, be provided with stator return spring, the elastic force of the spring suffered by stator is contrary with magnetic attraction direction, makes stator move required actuating force and significantly reduces, reduce the power requirement to executive item, and in position of stator process, there is cushioning effect.
Although the present invention discloses as above with preferred embodiment, so and be not used to limit scope of the invention process, the simple equivalence change done according to claims of the present invention and description with modify, still belong in the scope of technical solution of the present invention.
Claims (7)
1. a motor, is characterized in that it comprises:
Housing;
Rotating shaft, is installed on this housing by revolute, and this rotating shaft has central axis;
Stator, be installed in this housing by moving sets, moving axially along this central axis, this stator has magnetic pole of the stator coil windings;
Rotor, be installed on this rotating shaft, this rotor flank is provided with multiple rotor magnetic pole; And
Actuator, acts on this stator, drives this stator shaft orientation to move.
2. motor as claimed in claim 1, it is characterized in that wherein said rotor magnetic pole is permanent magnet, or described rotor magnetic pole is magnetic pole of the stator coil windings.
3. motor as claimed in claim 1, is characterized in that wherein said revolute is swivel bearing.
4. motor as claimed in claim 1, is characterized in that wherein said moving sets is linear bearing, or the mating of groove and key, or the mating of slide block and guide rail.
5. motor as claimed in claim 1, is characterized in that wherein said actuator provides execution power by cylinder, oil cylinder, battery valve or stepping motor.
6. motor as claimed in claim 1, it is characterized in that wherein said stator is positioned at the inner peripheral surface of this rotor, or this stator is positioned at the outer peripheral face of this rotor.
7. motor as claimed in claim 1, is characterized in that wherein said motor is permanent magnetic brushless, the magneto of motorcycle, car wheel electromotor or wind-driven generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310507393.0A CN104578568A (en) | 2013-10-24 | 2013-10-24 | Motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310507393.0A CN104578568A (en) | 2013-10-24 | 2013-10-24 | Motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104578568A true CN104578568A (en) | 2015-04-29 |
Family
ID=53093983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310507393.0A Pending CN104578568A (en) | 2013-10-24 | 2013-10-24 | Motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104578568A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111376729A (en) * | 2018-12-30 | 2020-07-07 | 江苏太航信息科技有限公司 | Vehicle system for improving battery endurance |
| CN114243984A (en) * | 2021-12-22 | 2022-03-25 | 徐州铭尊机电有限公司 | DC electric vehicle motor |
-
2013
- 2013-10-24 CN CN201310507393.0A patent/CN104578568A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111376729A (en) * | 2018-12-30 | 2020-07-07 | 江苏太航信息科技有限公司 | Vehicle system for improving battery endurance |
| CN114243984A (en) * | 2021-12-22 | 2022-03-25 | 徐州铭尊机电有限公司 | DC electric vehicle motor |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |
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| WD01 | Invention patent application deemed withdrawn after publication |