CN204906032U - Permanent magnetism brushless motor with many centrifugation piece combination formula speed regulators - Google Patents
Permanent magnetism brushless motor with many centrifugation piece combination formula speed regulators Download PDFInfo
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- CN204906032U CN204906032U CN201520419671.1U CN201520419671U CN204906032U CN 204906032 U CN204906032 U CN 204906032U CN 201520419671 U CN201520419671 U CN 201520419671U CN 204906032 U CN204906032 U CN 204906032U
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Abstract
The utility model provides a permanent magnetism brushless motor with many centrifugation piece combination formula speed regulators, includes stator and winding, drive rotor and speed governing rotor, speed regulator, motor shaft, casing etc. Wherein drives most area that the rotor occupied the stator air gap, bears energy conversion main function, with motor shaft fixed connection, through the mechanical moment of motor shaft output, its characterized in that speed governing rotor and speed regulator link to each other, and the speed regulator includes the casing, have symmetrical arrangement's centrifugation piece group and cam axle sleeve and spring in the casing to constitute rotational speed response adjustment mechanism, low -speed locking mechanism and moment mechanism, this kind of speed regulator utilizes centrifugal force and weak magnetism speed governing principle, and self -adaptation infinitely variable speed makes the not only stable big moment of torsion of output during low -speed of permanent magnetism brushless motor, also can stablize efficient power in well high -speed output.
Description
Technical field
The present invention relates to a kind of permanent magnetic brushless, particularly relate to the permanent magnetic brushless that motor vehicle drives.
Background technology
In recent years, motor vehicle Driving technique develops rapidly, and drive motors has a very important role as its heart.Various technical scheme is constantly released, and wherein permanent magnetic brushless is due to compact conformation, and specific power is large, and efficiency is high, technology maturation, therefore, obtains a wide range of applications in existing motor vehicle.
But common permanent magnetic brushless is difficult to adjustment motor magnetic flux amount, and be difficult to the constant power governor control characteristics possessed needed for vehicle traction, the efficient region of its mechanical property can not meet the excursion of actual applying working condition, and this is very uneconomic.Since the eighties in last century, successively proposed many technical schemes, mainly realize weak-magnetic speed-regulating by intelligent electronic switch and control, another kind of scheme is then change magnetic structure in real time to reach reduction stator magnetic linkage to realize weak-magnetic speed-regulating.The patent 2012102840118 " a kind of brushless, permanently adaptive rate drive motors " that I designed had mentioned this kind of domestic and international patent embodiment.
I participate in above-mentioned patent implementation process in by former design by the Curve guide impeller making much necessity and important creation.Deficiency as original design is that the coupling of the linear characteristic of spring and the nonlinear characteristic of centrifugal force can only produce two crosspoints, and all the other parts depart from larger.In addition when heavy-load start, speed-varying rotor can be shaken, and produces extraordinary noise.
Summary of the invention
In order to overcome the deficiency of original design, 1 makes centrifugal force curve linear, better can mate with spring; Centrifugal block for clutch use jitter problem during 2 solution heavy-load start; 3 are convenient to assembling; The present invention proposes a kind of design " many centrifugal films compounded governor and brushless electric machine " newly: comprise stator and winding, driving rotor and speed-governing rotor, speed regulator, motor shaft, casing etc., rotor is wherein driven to occupy most of area of stator air gap, bear power conversion major function, be fixedly connected with motor shaft, export mechanical force moment by motor shaft; It is characterized in that described speed-governing rotor is connected with speed regulator, and speed regulator comprises housing, centrifugal film group and the cam sleeve of balanced configuration is had in housing, thus the moment mechanism forming Speed sensing governor motion, low speed lockable mechanism and be made up of cam sleeve and spring; Have central dividing plate 14 in described governor housing 10, housing is divided into speed governing sheet room 12 and spring housing 11, porose in the middle of dividing plate, cam sleeve 6 increment is positioned at speed governing sheet room, forms Speed sensing governor motion with speed governing sheet group; Its tail end forms spring shaft, and spring shaft enters spring housing through interstitial hole and volute spring 13 forms moment mechanism.
Described induction governor motion comprises a pair bearing pin 15, and centrifugal governor sheet 9 is contained on bearing pin 15, can rotate around it; Centrifugal governor sheet there is tooth 9-1, and be meshed with the tooth 6-3 of cam sleeve, therefore when hoof block rotates, drive cam sleeve 6 is rotated, the phase place of adjustable magnetic rotor 3 can be changed when more than setting speed ne, see Fig. 4, centrifugal governor sheet group is made up of at least above centrifugal governor sheet of two panels, centrifugal governor sheet be difformity, Different Weight unit sheet a, b, c ... the combination of selected cell sheet carries out segmented compensation or correction to centrifugal force function curve T1, make with spring performance K optimum Match regulate magnetic phase, see Fig. 4 and Fig. 5.
Described moment mechanism comprises cam sleeve 6 and volute spring 13, volute spring is placed in spring housing 11, volute spring innermost circle is fixed on cam sleeve tail end and is used as in the notch 6-1 of spring shaft, volute spring outmost turns and shell 10 are fixedly connected, its rotation direction makes spring action force direction contrary with the rotation direction of centrifugal action, tries hard to make centrifugal governor sheet group and speed-governing rotor 3 get back to original position.
Described low speed lockable mechanism, comprise the wedge-shaped slot 6-2 on cam sleeve, with spring 7, ratchet 8, ratchet 8 is stuck in wedge-shaped slot under the effect of spring 7, the counter-force balance point of the centrifugal force on ratchet and spring 7 is near setting speed ne, at setting speed following low speed lockable mechanism locking, prevent start-up period larger torque from acting on spring and cause the opening and closing voluntarily of speed governing sheet group, produce shake.Do not produce weak magnetic variation speed below setting speed, export permanent moment of torsion, see Fig. 3.
One end of described speed regulator shell 10 is fixedly linked with the yoke 3.1 of speed-governing rotor 3, and the outside of yoke is magnetic pole 3.2, the distribution of its polarity and drive the matched polarity of rotor 2.
The invention has the advantages that: the method using multiple different units sheet to be combined into centrifugal governor sheet group achieves the linearisation of centrifugal force characteristic, improves speed governing effect, make whole speed regulating section balanced efficient.The second, invention increases low speed lockable mechanism, improve starting performance and low-speed performance, the 3rd, present invention process is good, is suitable for producing in enormous quantities.
Accompanying drawing explanation
Fig. 1 is the design example that this patent is applied to brushless electric machine, numbering 1 motor stator and winding in figure, and 2 drive rotor, 2-1 magnet, 3 speed-governing rotors, 4 speed regulators, 5 motor shafts.
Fig. 2 is the cutaway view of speed-governing rotor+speed regulator integrated design, numbering 3-1 yoke in figure, 3-2 magnet, 6 cam sleeves, the groove of 6-1 tail end, the ratchet cover plate in 6-2 cam sleeve stage casing, 7 is ratchet springs, 8 is hook tooths, and 9 is centrifugal governor sheet groups, and 10 is shells, 11 spring housing, 12 speed governing sheet rooms, 13 is volute springs, 14 central dividing plates.
Fig. 3 show low speed lockable mechanism and centrifugal film group below setting speed time lockup state.
The situation of magnetic pole dislocation Φ angle during Fig. 4 display setting rotating speed above weak-magnetic speed-regulating.
Fig. 5 is the linear compensation effect of centrifugal force-speed curves, and centrifugal force---the speed curves that T1 is centrifugal film gross mass when being constant, T2 is centered plots after different speed governing sheet piecewise combination linear compensation, and K is spring characteristic curve.
Fig. 6 is the Governor Design not with speed-governing rotor, can be mated the motor of more specifications flexibly, but compare integral structure by user designer, needs to take the more space of motor internal.
Embodiment
See Fig. 1 and Fig. 2, this is an electrodeless variable-speed internal rotor permanent-magnetic brushless electric machine: stator, casing, end cap, the same with common brushless electric machine, drives rotor 2 to be placed in the output of motor shaft, after speed-governing rotor 2 and speed regulator 3 are placed in and drive rotor.Drive rotor 2 circumference that permanent magnet 2-1 is set, make polarity become periodic distribution by N, S, drive rotor 2 to occupy most of area of stator air gap, bear power conversion major function, be fixedly connected with armature spindle 1, export mechanical force moment by armature spindle 1; 3-1 circumferentially arranges permanent magnet 3-2 to the yoke of speed-governing rotor 3, and polarity is pressed N, S and is become periodic distribution, the remainder of their the corresponding stator air gap of magnetic flux.Speed-governing rotor 3 is connected the integrated assembly of rear one-tenth with speed regulator 4.
There is central dividing plate 14 in governor housing 10, housing is divided into speed governing sheet room 12 and spring housing 11, porose in the middle of dividing plate.Cam sleeve divides 3 sections, and increment is positioned at speed governing sheet room, forms Speed sensing governor motion with speed governing sheet group; There is wedge shape slotted disk in stage casing, and for forming low speed mechanism, its tail end is used as the mandrel of spring; Tail end enters spring housing through interstitial hole and volute spring 13 forms moment mechanism.Bearing pin 15 symmetry is positioned at the indoor edge of speed governing sheet, and centrifugal governor sheet 9 is contained on bearing pin 15, can rotate around it; Centrifugal governor sheet there is tooth 9-1, and be meshed with the tooth 6-3 of cam sleeve, therefore when hoof block rotates, drive cam sleeve 6 is rotated, the phase place of speed-governing rotor 3 can be changed in good time, produce phase difference, see Fig. 4, centrifugal governor sheet group is made up of at least above centrifugal governor sheet of two panels, centrifugal governor sheet be difformity, Different Weight unit sheet a, b, c ... the combination of selected cell sheet carries out segmented compensation or correction to centrifugal force function curve T1, make with spring performance K optimum Match regulate magnetic phase, see Fig. 4 and Fig. 5.Volute spring 13 is placed in spring housing 11, volute spring innermost circle is fixed in the notch 6-1 of cam sleeve tail end, volute spring outmost turns and shell 10 are fixedly connected, its rotation direction makes spring action force direction contrary with the rotation direction of centrifugal action, tries hard to make centrifugal governor sheet group and speed-governing rotor 3 get back to original position.
During stable state, speed-governing rotor is that the torque produced by counter spring force square and centrifugal governor sheet is reached balance by cam and determined relative to driving the magnetic phase difference (Fig. 4) of rotor), the vector sum of rotor flux and speed-governing rotor magnetic flux is driven to equal total magnetic flux, magnetic phase difference is larger, resultant flux is fewer, and the minimizing of resultant flux produces speedup speed governing.
Consider centrifugal force square to be directly proportional with rotating speed n, be directly proportional with effective unit tablet quality sum m, be directly proportional with the radius R of barycenter to the centre of gyration, therefore centrifugal force F is a nonlinear function, and spring performance is linear, be difficult to reach multiple stable equilibrium point, for this reason, adopt the method combined by multiple unit sheet to make centrifugal force function linearization.
The functional realiey building linear centrifugal force-speed functions and low speed locking mechanism with regard to this patent centrifugal governor sheet group below stresses:
If centrifugal force is F=0.105Rmn^2=0.105(Rmn) × n
As long as make, Rmn's is long-pending constant, then F is with n linear change, if in speed-change process, while R and n increases, the quantity of corresponding minimizing useful effect unit sheet, be then equivalent to m and reduce, the product of Rmn can be made constant, make F with n linear change.
The centrifugal governor sheet group of the present embodiment is made up of a, b, c, d unit sheet, their difference is the limit convex 9-2 with different length, when unit sheet is thrown away, it is limited that the unit sheet of long limit convex first arrives centrifugal chamber edge, its teeth portion 9-1 exits and the engaging of cam tooth 6-1, no longer contribute centrifugal force, equal the gross mass decreasing centrifugal governor sheet group 9, its effect is see Fig. 5.Wherein T1 is former nonlinear centrifugal force function curve, and K is spring characteristic curve, and T2 is the curve after linearisation is corrected.
The effect of low speed lockable mechanism, one is theoretical according to Automobile Design, and the dynamic characteristics that vehicle needs is the mechanical property of the permanent moment of torsion of below setting speed, the above invariable power of setting speed.Permanent-magnet brushless DC electric machine moment of torsion is directly proportional to electric current and magnetic flux respectively, as above tell and more than setting speed, improve rotating speed by weak magnetic reduce moment of torsion and realize invariable power speed change, then locking speed regulator is wished thus locking magnetic flux below setting speed, set current limit, then motor exports constant-torque simultaneously.Therefore this patent is provided with low speed mechanism.Comprise the wedge-shaped slot 6-2 in this example cam sleeve stage casing, with spring 7, ratchet 8, ratchet 8 is stuck in wedge-shaped slot under the effect of spring 7, the counter-force balance point of the centrifugal force on ratchet and spring 7 is near setting speed ne, at setting speed following low speed lockable mechanism locking, prevent start-up period larger torque from acting on spring and cause the opening and closing voluntarily of speed governing sheet group, produce shake; Simultaneously because speed-governing rotor is locked into zero, phase difference=0, keep maximum magnetic flux, export maximum constant moment of torsion, see Fig. 3.
Above preferred embodiment is one of numerous refinement scheme, and those skilled in the art inspire by this patent, is not difficult to design practical specific product or commodity in conjunction with experience and knowledge.
Claims (5)
1. there is a permanent magnetic brushless for many centrifugal films compounded governor, comprise stator and winding, driving rotor and speed-governing rotor, speed regulator, motor shaft, casing etc., wherein drive rotor to be fixedly connected with motor shaft, export mechanical force moment by motor shaft; It is characterized in that described speed-governing rotor is connected with speed regulator, and speed regulator comprises housing, have two groups of centrifugal film groups of balanced configuration and cam sleeve and spring in housing, thus form Speed sensing governor motion, low speed lockable mechanism and moment mechanism; Have central dividing plate in described housing, housing is divided into speed governing sheet room and spring housing, porose in the middle of dividing plate, cam sleeve one end is positioned at speed governing sheet room, forms Speed sensing governor motion with speed governing sheet group; Another tail end forms spring shaft, and spring shaft enters spring housing through interstitial hole and volute spring forms moment mechanism.
2. a kind of permanent magnetic brushless with many centrifugal films compounded governor according to claim 1, it is characterized in that described induction governor motion comprises a pair bearing pin (15), centrifugal governor sheet (9) is contained on bearing pin (15), can rotate around it; Centrifugal governor sheet there is tooth (9-1), and be meshed with the tooth (6-3) of cam sleeve, cam sleeve (6) will be driven to rotate when therefore hoof block rotates, the phase of speed-governing rotor (3) can be changed at more than setting speed ne; Centrifugal governor sheet group is made up of at least above centrifugal governor sheet of two panels, centrifugal governor sheet is unit sheet (a, b, the c, d) of difformity, Different Weight, the combination of selected cell sheet carries out segmented compensation or correction to centrifugal force function curve T1, make with spring performance K optimum Match regulate magnetic phase.
3. a kind of permanent magnetic brushless with many centrifugal films compounded governor according to claim 1, it is characterized in that described moment mechanism comprises cam sleeve (6) and volute spring (13), volute spring is placed in spring housing (11), volute spring innermost circle is fixed in the notch (6-1) of cam sleeve tail end and spring shaft, volute spring outmost turns and shell (10) are fixedly connected, its rotation direction makes spring action force direction contrary with the rotation direction of centrifugal action, tries hard to make centrifugal governor sheet group and speed-governing rotor (3) get back to original position.
4. a kind of permanent magnetic brushless with many centrifugal films compounded governor according to claim 1, it is characterized in that described low speed lockable mechanism, comprise the wedge-shaped slot (6-2) on cam sleeve, with spring (7), ratchet (8), ratchet is stuck in wedge-shaped slot under the effect of spring (7), the counter-force balance point of the centrifugal force on ratchet and spring (7) is near setting speed ne, at setting speed following low speed lockable mechanism locking, prevent start-up period larger torque from acting on spring and cause the opening and closing shake voluntarily of speed governing sheet group, weak magnetic variation speed is not produced below setting speed, export permanent moment of torsion.
5. a kind of permanent magnetic brushless with many centrifugal films compounded governor according to claim 1, it is characterized in that the yoke (3.1) of the same speed-governing rotor in one end (3) of the housing (10) of described speed regulator is fixedly linked, the outside of yoke is magnetic pole (3.2), the distribution of its polarity and the matched polarity of driving rotor (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520419671.1U CN204906032U (en) | 2015-06-17 | 2015-06-17 | Permanent magnetism brushless motor with many centrifugation piece combination formula speed regulators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520419671.1U CN204906032U (en) | 2015-06-17 | 2015-06-17 | Permanent magnetism brushless motor with many centrifugation piece combination formula speed regulators |
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| CN204906032U true CN204906032U (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520419671.1U Withdrawn - After Issue CN204906032U (en) | 2015-06-17 | 2015-06-17 | Permanent magnetism brushless motor with many centrifugation piece combination formula speed regulators |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104917315A (en) * | 2015-06-17 | 2015-09-16 | 杨世国 | Multi-centrifugal sheet combined type speed controller and brushless motor |
| CN112606610A (en) * | 2020-12-24 | 2021-04-06 | 湖北科技学院 | Stepless speed regulation miniature carving pen with buffering function |
-
2015
- 2015-06-17 CN CN201520419671.1U patent/CN204906032U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104917315A (en) * | 2015-06-17 | 2015-09-16 | 杨世国 | Multi-centrifugal sheet combined type speed controller and brushless motor |
| CN104917315B (en) * | 2015-06-17 | 2017-09-19 | 重庆西伟迪磁电动力科技有限公司 | A kind of permanent magnetic brushless with many centrifugal film compounded governors |
| CN112606610A (en) * | 2020-12-24 | 2021-04-06 | 湖北科技学院 | Stepless speed regulation miniature carving pen with buffering function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151223 Effective date of abandoning: 20170919 |
|
| AV01 | Patent right actively abandoned |