CN102820720B - Motor rotor and assembly method thereof - Google Patents

Motor rotor and assembly method thereof Download PDF

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Publication number
CN102820720B
CN102820720B CN201210288195.5A CN201210288195A CN102820720B CN 102820720 B CN102820720 B CN 102820720B CN 201210288195 A CN201210288195 A CN 201210288195A CN 102820720 B CN102820720 B CN 102820720B
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CN
China
Prior art keywords
gear
rotor
clutch
mechanical reduction
output
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Expired - Fee Related
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CN201210288195.5A
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Chinese (zh)
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CN102820720A (en
Inventor
刘晓辉
陈昌
胡义明
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Changzhou Sinya Motor Co., Ltd.
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CHANGZHOU MASTER MACHINERY Co Ltd
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Priority to CN201210288195.5A priority Critical patent/CN102820720B/en
Publication of CN102820720A publication Critical patent/CN102820720A/en
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Publication of CN102820720B publication Critical patent/CN102820720B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention relates to a motor rotor. The rotor comprises a rotor shell, a magnetic yoke and a plurality of pieces of permanent magnet steel, wherein the pieces of permanent magnet steel are uniformly and fixedly arranged on the outer side wall of the rotor shell at intervals; and the magnetic yoke is positioned outside the pieces of permanent magnet steel and is fixedly connected with the rotor shell. The invention also relates to an assembly method of the motor rotor. The assembly method comprises the operation steps of: uniformly and fixedly adhering the pieces of permanent magnet steel to the outer side wall of the rotor shell at intervals; covering the permanent magnet steel with the magnetic yoke; and meanwhile, fixedly connecting the magnetic yoke with the rotor shell. The assembly steps of the permanent magnet steel are simple, and a phenomenon of stripping is avoided.

Description

A kind of rotor and assembly method thereof
Technical field
The present invention relates to a kind of motor component, be specifically related to a kind of rotor, the invention still further relates to the assembly method of this rotor.
Background technology
External rotor electric machine comprises rotor and is positioned at the motor stator inside rotor.Described rotor generally comprises rotor case, yoke and some permanent magnetic steels, and permanent magnetic steel is fixedly bonded on rotor case medial surface by yoke.And in motor actual moving process, because the permanent magnetic steel and motor stator being positioned at rotor case medial surface can produce active force and serious permanent magnetic steel obscission occurs, simultaneously carry out the adhering processes operation of permanent magnetic steel at rotor medial surface comparatively loaded down with trivial details.
Summary of the invention
The object of this invention is to provide a kind of rotor and assembly method thereof, the assembly process of permanent magnetic steel is simple and avoid obscission occurs.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind of motor with mechanical reduction gear, described motor comprises stator, rotor, output shaft, wherein: the input gear of described mechanical reduction gear can be arranged on rotor by relative rotor rotatably by input gear axle, the output gear of described mechanical reduction gear is fixedly connected with output shaft, spacing in order to carry out radial direction to rotor, output shaft is coaxial and can be arranged on rotatably on rotor by relative rotor.
Preferably, in order to obtain big speed ratio, described mechanical reduction gear is NN type gear with small teeth difference deceleration device.
Preferably, under the prerequisite meeting gearratio requirement, in order to obtain high transmission efficiency, described mechanical reduction gear is NGW type mechanical reduction gear.
Certainly, mechanical reduction gear of the present invention can also be the mechanical reduction gear of other types in common practise, can select the type of mechanical reduction gear according to the actual requirements.
Preferably, described mechanical reduction gear comprises the idler gear, input gear, the output gear that engage successively, and described idler gear can be sleeved on described output shaft with the relative rotation.
Preferably, described input gear comprises the first gear, the second gear; Described first gear and described second gear are packed in the two ends of described input gear axle, and described first gear engages with described idler gear, and described second gear engages with described output gear.
Preferably, described input gear is duplicate gear, and described duplicate gear is sleeved on described input gear axle, described idler gear and described output gear respectively with first order gear and the second level gears meshing of described duplicate gear; Further preferably, described engagement is internal messing or external toothing, and namely described idler gear and output gear can be external gears, also can be ring gears.
Preferably, described rotor is positioned at inside stator, and described input gear axle is inserted in the axis hole of rotor.
Preferably, described rotor is positioned at outside stator, comprises rotor case, yoke and some permanent magnetic steels, and some permanent magnetic steels are fixedly installed on rotor case sidewall by yoke uniform intervals, and described input gear axle is inserted in the axis hole of rotor case.
But the motor inner rotor motor with mechanical reduction gear of the present invention can be also external rotor electric machine, not by any restriction of motor type.Rotor of the present invention and stator structure can be any one structures of prior art simultaneously.
When for external rotor electric machine, preferably, the technical scheme of its rotor can be:
A kind of rotor, described rotor comprises rotor case, yoke and some permanent magnetic steels, wherein: be fixedly installed on rotor case lateral wall, described yoke is positioned at permanent magnetic steel outside and is fixedly connected with rotor case described permanent magnetic steel uniform intervals.Described motor outer rotor is due between yoke and rotor case, under the prerequisite ensureing motor electromagnetic performance, the permanent magnetic steel that effectively prevent prior art is all arranged on the medial surface of rotor case, owing to being subject to being positioned at stator outside it its active force often be there is to the generation of obscission from rotor case, also facilitate the adhering processes operation of permanent magnetic steel simultaneously.
Preferably, described one or both ends, rotor case side comprise extension limit, and described extension limit can be used for being fixed with yoke coordinating, and are also convenient to the adhering processes operation of permanent magnetic steel simultaneously.Other components being fixedly connected with for rotor case and yoke can certainly be adopted.
Preferably, in order to reduce production cost convenient processing simultaneously, described rotor case is integrated cast aluminum construction.
Preferably, described rotor case lateral wall is also integrally formed with some permanent magnetic steel locating spacers, for the uniform intervals distribution of permanent magnetic steel on rotor case.
Preferably, described rotor case is provided with the axis hole carrying out plug-in mounting with the input gear axle of mechanical reduction gear and coordinate.
Preferably, the quantity of described axis hole is 1-10.
Preferably, in order to reduce motor noise, described permanent magnetic steel radius of curvature in the middle part of rotor case side is greater than the radius of curvature at two ends.
Preferably, described rotor case can also arrange radiator structure and strengthen structure, its concrete shape and quantity can be arranged according to the actual requirements, believe that these are all the routine selections of those skilled in the art.
Preferably, a kind of assembly method of rotor, wherein: its operating procedure is:
(1), permanent magnetic steel uniform intervals is fixedly pasted onto on rotor case lateral wall;
(2), then yoke is covered permanent magnetic steel outside, yoke is fixedly connected with rotor case simultaneously.
Preferably, described rotor case is provided with the fit structure be fixedly connected with yoke, and yoke is provided with the fit structure be fixedly connected with rotor case.Further, can being fixedly connected with by both chase mortise matching mechanism realizations.
Natch, when the present invention is external rotor electric machine, described rotor and the concrete structure of motor stator also can illustrate see the related text in first patent application of the applicant, and application number is CN201210084877.4, publication date is on August 8th, 2012, does not repeat them here.
Further preferably, the present invention also comprises clutch, to realize the conversion of low speed output and speedy carding process.Particularly, the function of clutch of the present invention is for realizing when low speed exports demand, mechanical reduction gear normally work realize output shaft deceleration export, when there being speedy carding process demand, by clutch, mechanical reduction gear and rotor are combined into a rigid unitary, no longer there is drive connection in each parts of mechanical reduction gear, realize the speedy carding process of output shaft, therefore the concrete installation site of clutch can be arranged on mechanical reduction gear input gear and and described rotor between, also can be between the input gear of mechanical reduction gear and output gear, also can be arranged on other installation sites.Again further preferably, described clutch be arranged at described mechanical reduction gear input gear and and described rotor between, be convenient to carry out installing and improve compact conformation degree.
Clutch of the present invention can be electromagnetic clutch mechanism or the mechanical clutch mechanism of prior art.Preferably, in order to improve the compact conformation degree of clutch further, described clutch is electromagnetic clutch mechanism; Further preferably, the installation of electromagnetic clutch mechanism is closed and is: the clutch gear ring of described electromagnetic clutch mechanism engages with described idler gear and is in axial sliding connection; When low speed exports, described clutch gear ring and described rotor are in non-fastening state, and during speedy carding process, described clutch gear ring engages with described rotor.
Preferably, comprise output sleeve further, described output sleeve is sleeved on described output shaft, and the idler gear of described mechanical reduction gear is fixedly connected with described output sleeve, and according to the actual requirements, output sleeve also can as another clutch end.
The mode that is fixedly connected with of the present invention can be that screw fastening connects, and can be welding, comprise laser welding, or riveted connects, interference fit or spline secure fit, or other is fixedly connected with mode.
Also it should be noted that, preferably, same or analogous concrete parts of solenoid mechanism of the present invention, all the other functions, and improve and optimizate scheme and all can describe see the related text at first patent application CN201210084877.4 of the applicant, this no longer one by one word repeat.
The present invention is applicable to being applied to field of household appliances, especially be applicable to being applied to washing machine field, when obtaining a kind of motor with mechanical reduction gear for washing machine when the present invention is applied to washing machine field, output shaft of the present invention can be used as wash shaft, and the output sleeve be sleeved on described output shaft is set, output sleeve is as dehydrating shaft, and its one end is fixedly connected with idler gear of the present invention, simultaneously in order to realize the conversion between the washing operating mode of washing machine and dehydration condition, can in dehydrating shaft and wash shaft, or between dehydrating shaft and rotor or miscellaneous part, clutch is set, the operation principle of described clutch is similarly: when when washing operating mode, the deceleration that the present invention normally realizes the output shaft (being also wash shaft) of described mechanical reduction gear exports, realize washing function, when when dehydration condition, mechanical reduction gear of the present invention and rotor become the common High Rotation Speed of entirety of a rigidity under the effect of clutch, no longer drive connection is there is between the parts of described mechanical reduction gear, realize dehydrating function.
Preferably, described clutch is arranged between described output sleeve and described rotor, particularly, when clutch is electromagnetic clutch mechanism, the clutch gear ring of described electromagnetic clutch mechanism and described output sleeve or described idler gear are by spline joint, and described clutch gear ring engages with described spline housing and is in axial sliding connection.Further preferably, during washing operating mode, described clutch gear ring fixedly engages with the upper end cover of described motor; During dehydration condition, described clutch gear ring engages with described rotor, forms single type of drive of washing machine.Further preferably, during washing operating mode, described clutch gear ring is not fixed; During dehydration condition, described clutch gear ring engages with described rotor, forms composite power (being also the even power) type of drive of washing machine.
Relative above-mentioned background technology, substantial technological point of the present invention is to propose the tooth rest of rotor as mechanical reduction gear first, coordinated by the connection of the input gear on tooth rest with all the other mechanical reduction gear parts, and be fixedly connected with output shaft the deceleration realizing output shaft by the output gear of mechanical reduction gear and export, relative to existing in " adopt rotor and output shaft fixed connection to be integrated, and then by arranging mechanical reduction gear up, output shaft is slowed down, structure is compact not, and it is large to take up room, especially be that axial dimension is larger ", the present invention using rotor simultaneously as one of parts of mechanical reduction gear, namely the integrated of motor and mechanical reduction gear collection is really achieved, substantially increase the compact conformation degree of whole driver part, minimizing takes up room, especially be axial dimension, simultaneously due to compact conformation, avoid the consumption of a large amount of connector, thus reduce further production cost.
Also it should be noted that, for the field of each application of motor, particularly belong to the washing machine field of household electrical appliances, the compact conformation degree and the reduction that how to improve motor and deceleration device thereof take up room, reduce again simultaneously production cost always those skilled in the art be devoted for years to the technical problem of solution always, therefore the motor application with mechanical reduction gear that proposes of the present invention is in field of household appliances, especially for after being applied to washing machine field, has very progressive meaning.
In addition, propose the tooth rest of rotor as mechanical reduction gear according to the present invention, the present invention and the existing technology about double-power driving structure can be carried out combination and obtain more compact structure, take up room less by those skilled in the art, are especially the novel double power washing machine Drive Structure that axial dimension is less.
Simultaneously, for the present invention for the dependency structure each parts not carrying out explanatory note, as the structures etc. such as reinforcing rib structure, connection bearing, spacing, load-bearing believe that the routine being those skilled in the art is selected, not novelty and creativeness after being combined with the present invention, state no longer one by one at this.
Accompanying drawing explanation
Fig. 1 is the transmission schematic diagram of the first embodiment of motor with mechanical reduction gear provided by the present invention;
Fig. 2 is the transmission schematic diagram of the motor the second embodiment with mechanical reduction gear provided by the present invention;
Fig. 3 is the transmission schematic diagram of the third embodiment of motor with mechanical reduction gear provided by the present invention;
Fig. 4 is the transmission schematic diagram of the motor with mechanical reduction gear provided by the present invention 4th kind of embodiment;
Fig. 5 is the transmission schematic diagram of the motor with mechanical reduction gear provided by the present invention 5th kind of embodiment;
Fig. 6 is the transmission schematic diagram of the motor with mechanical reduction gear provided by the present invention 6th kind of embodiment;
Fig. 7 is the transmission schematic diagram of the motor with mechanical reduction gear provided by the present invention 7th kind of embodiment;
Fig. 8 is the transmission schematic diagram of the motor with mechanical reduction gear provided by the present invention 8th kind of embodiment;
Fig. 9 is the transmission schematic diagram of the motor with mechanical reduction gear provided by the present invention 9th kind of embodiment;
Figure 10 is that the motor with mechanical reduction gear provided by the present invention 9th kind of embodiment is applied to the perspective view of washing machine field as washing machine driver;
Figure 11 is the cutaway view of Figure 10;
Figure 12 is the body portion explosive view of Figure 10;
Figure 13 is Figure 10, the perspective view of the rotor 23 shown in 11,12;
Figure 14 is the cutaway view of Figure 13;
Figure 15 is the stereochemical structure explosive view of Figure 13.
Embodiment
Core of the present invention is to provide a kind of motor with mechanical reduction gear, axial dimension is little, compact conformation, take up room little.
In order to make those skilled in the art person understand the present invention program better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
It is pointed out that the upper and lower noun of locality that waits related to is arranged in figure with parts in Fig. 1 to Figure 15 and parts position each other defines herein, just in order to state the clear and convenient of technical scheme.Should be appreciated that the noun of locality adopted should not limit the scope of present specification request protection herein.
The structure that it is pointed out that function in each execution mode of the present invention is identical or communicate or component indicate with identical mark in the drawings.
The transmission schematic diagram of the first embodiment of motor with mechanical reduction gear is shown with reference to figure 1, Fig. 1.In this kind of execution mode, should comprise motor with the motor of mechanical reduction gear, described motor is inner rotor motor, specifically comprises motor housing (scheming unmarked), motor stator 22 and rotor 23; Motor stator 22 is fixed on motor housing, and rotor 23 is coaxially installed on inside motor stator 22, and rotor 23 is provided with multiple axis hole, and the two ends up and down of rotor 23 are also provided with upper end cover and bottom end cover; By lock-screw, bottom end cover, motor stator 22 and upper end cover can be fixed; Above upper end cover, be also fixedly connected with mounting panel, the motor with mechanical reduction gear can be arranged on external equipment by mounting panel.
The described motor with mechanical reduction gear also comprises output shaft 11, output shaft 11 concentric is arranged at the inside of described rotor 23, between output shaft 11 and rotor 23, can oiliness bearing be set, output shaft 11 radial direction limits rotor 23, and realizes the relative rotation between output shaft 11 and rotor 23 by oiliness bearing.
The described motor with mechanical reduction gear also comprises mechanical reduction gear, and described mechanical reduction gear comprises input gear axle 31, first gear 321, second gear 322, idler gear 331 and output gear 332; Input gear axle 31 is plugged in the axis hole of rotor 23, is provided with oiliness bearing between input gear axle 31 and rotor 23, by realizing relative rotation between oiliness bearing input gear axle 31 and rotor 23; First gear 321 and the second gear 322 are packed in the two ends of input gear axle 31; First gear 321 and idler gear 331 engage, and the second gear 322 and output gear 332 engage.
Idler gear 331 is sleeved on output shaft 11, does not fix with output shaft 11; Output gear 332 is affixed with output shaft 11, can be fixedly connected with by straight pin; Also be provided with rolling bearing between output gear 332 and bottom end cover, the relative rotation between output gear 332 and bottom end cover can be realized, and with limit output gear 332 axis and move radially.
Here it should be noted that, can in rotor the multiple input gear axle of plug-in mounting and the first gear coordinated with it and the second gear; The axis hole number of rotor is preferably 2 ~ 4, and the layout of multiple input gear axle can make the combination of motor and mechanical reduction gear operationally more stable; Can certainly only plug-in mounting gear shaft and the gear that coordinates with it on rotor.
During present embodiment work, after electrical power, drive motors rotor 23 rotates, the first gear 321 simultaneously driving the input gear axle 31 that is connected with rotor 23 and be fixedly mounted with input gear axle 31 and the second gear 322 revolve round the sun, to engage with the first gear 321 due to idler gear 331 and there is tooth difference, input gear axle 31 rotation can be driven simultaneously, rotated with the driver output gear 332 that engages of output gear 332 by the second gear 322, finally drive the output shaft 11 affixed with output gear 332 to rotate; Due to the first gear 321, second gear 322, there is tooth difference relation between idler gear 331 and output gear 332, so can produce speed discrepancy between output gear 332 and rotor 23, driver output axle 11 low speed exports.
Here it should be noted that, the first gear 321, second gear 322, tooth difference relation between idler gear 331 and output gear 332 can regulate according to actual required speed reducing ratio be determined.
In this kind of embodiment, idler gear 331 and output gear 332 are ring gear.
With reference to figure 2, in the second embodiment, described mechanical reduction gear comprises duplicate gear 32, idler gear 331 and output gear 332; Duplicate gear 32 is sleeved on input gear axle 31 ', and idler gear 331 and output gear 332 engage with the first order gear 321 of duplicate gear 32 and second level gear 322 respectively; Idler gear 331 is sleeved on output shaft 11, does not fix with output shaft 11, and output gear 332 is fixedly connected with output shaft 11; Wherein, idler gear 331 and output gear 332 are external gear.
In the second embodiment, input gear axle 31 ' is fixedly inserted on rotor 23, can relatively rotate between duplicate gear 32 and input gear axle 31 ', when drive motors rotor 23 rotates, drive duplicate gear 32 to revolve round the sun and rotation, according to the first order gear 321 of duplicate gear 32, second level gear 322 and the same object that can reach output shaft 11 low speed and export of the difference relation of the tooth between idler gear 331, output gear 332 simultaneously.
Certainly, also input gear axle 31 ' and rotor 23 can be rotationally connected, duplicate gear 32 is fixedly connected with input gear axle 31 ', can realize output shaft 11 low speed equally and export.
In the second embodiment or the first embodiment aforementioned, described idler gear 331 can be external gear, also can be ring gear, described output gear 332 can be external gear, also can be ring gear, thus make described mechanical reduction gear can have following several different execution mode.
With reference to figure 3, in the third execution mode, input gear axle 31 rotates and is plugged in rotor 23, and the first gear 321 and the second gear 322 are packed in the two ends of input gear axle 31; Wherein, described idler gear 331 and described output gear 332 are external gear.
With reference to figure 4, in the 4th kind of execution mode, input gear axle 31 rotates and is plugged in rotor 23, and the first gear 321 and the second gear 322 are packed in the two ends of input gear axle 31; Wherein, described idler gear 331 is ring gear, and described output gear 332 is external gear.
With reference to figure 5, in the 5th kind of execution mode, input gear axle 31 rotates and is plugged in rotor 23, and the first gear 321 and the second gear 322 are packed in the two ends of input gear axle 31; Wherein, described idler gear 331 is external gear, and described output gear 332 is ring gear.
With reference to figure 6, in the 6th kind of execution mode, input gear axle 31 ' is fixedly connected with rotor 23, can relatively rotate between duplicate gear 32 and input gear axle 31 ', idler gear 331 and output gear 332 engage with the first order gear 321 of duplicate gear 32 and second level gear 322 respectively; Wherein, described idler gear 331 is ring gear, and described output gear 332 is external gear.
Because the number of teeth of duplicate gear 32 two-stage gear is different, so the first order gear 321 ' of duplicate gear 32 can also be engaged with output gear 332, second level gear 322 ' engages with idler gear 331, wherein idler gear 331 is still ring gear, output gear 332 is still external gear, this is the 7th kind of execution mode, as shown in Figure 7.
Above-mentioned several execution mode is identical with the transmission principle of the first embodiment in the course of the work, repeats no more here.
It is pointed out that described mechanical reduction gear is except above-mentioned several embodiment, can also have other embodiment certainly, as long as can differential reducing be realized, make output shaft and rotor produce speed discrepancy.
In actual use, some external equipment requires that under different operating modes output shaft has different rotating speeds, as washing machine, under washing operating mode, needs output shaft low speed to export, under dehydration condition, need output shaft can speedy carding process, make washings can be completely dehydrated.In order to realize the demand of the different operating mode of external equipment, further improvement can be made to the above-mentioned motor with mechanical reduction gear.
Further, the described motor with mechanical reduction gear also comprises clutch 4, and clutch 4 is arranged between mechanical reduction gear and rotor 23, to realize the conversion of low speed output and speedy carding process.
Described clutch 4 can be electromagnetic clutch mechanism, also can be mechanical clutch mechanism.Be described for electromagnetic clutch mechanism below.
Concrete electromagnetic clutch mechanism can see electromagnetic clutch mechanism disclosed in the earlier application of the applicant, application number is CN201210084877.4, electromagnetic clutch mechanism with the annexation of miscellaneous part can be simultaneously: the clutch gear ring of electromagnetic clutch mechanism can engage with idler gear 331 and be in axial sliding connection, mounting panel is as upper meshing part, and rotor is as lower meshing part.
Here it should be noted that, clutch gear ring and idler gear 331 are all in engagement under any operating mode, and can not produce relative rotation between the two.When after electromagnetic clutch mechanism energising, clutch gear ring can overcome the elastic force of spring by the axial upward sliding of idler gear 331, makes clutch gear ring and mounting panel engaging, now after electrical power, can realize output shaft 11 low speed export by mechanical reduction gear; When after electromagnetic clutch mechanism power-off, under the back stretch effect of spring, clutch gear ring is by the axial slide downward of idler gear 331, clutch gear ring and mounting panel are thrown off, simultaneously with the engaging of rotor 23, mechanical reduction gear self-locking, now after electrical power, output shaft 11 and the synchronized rotation of rotor 23, realize speedy carding process.
In the course of the work, when rotor 23 and output shaft 11 rotate, inevitably friction is produced, in order to reduce friction, plane bearing can be set between rotor 23 and output shaft 11, to slow down the pivoting friction between rotor 23 and output shaft 11, extend working life.
Can also make the above-mentioned motor with mechanical reduction gear and further improving.
Further, the described motor with mechanical reduction gear also comprises output sleeve 12, described output sleeve 12 is sleeved on output shaft 11, can arrange oiliness bearing between output sleeve 12 and output shaft 11, makes can realize relative rotation between output sleeve 12 and output shaft 11.
With reference to the transmission schematic diagram that figure 8, Fig. 8 is when installing output sleeve additional with the motor of mechanical reduction gear.In this 8th kind of execution mode, mechanical reduction gear comprises the input gear axle 31 be plugged in rotor 23, the first gear 321 and the second gear 322, first gear 321 that are packed in input gear axle 31 two ends engage with idler gear 331, and the second gear 322 engages with output gear 332; Output gear 332 is affixed with output shaft 11; Idler gear 331 and output gear 332 are ring gear.
Idler gear 331 is fixedly connected with in output sleeve 12 one end; Clutch 4 is arranged between output sleeve 12 and rotor 23, and particularly, the clutch gear ring of clutch 4 can engage with idler gear 331 and be in axial sliding connection, and also can be engaged with output sleeve 12 by spline housing and be in axial sliding connection.It should be noted that, no matter clutch gear ring is be connected with output sleeve 12 by idler gear 331 or spline housing, under any operating mode, all engages with idler gear 331 or spline housing and can not relatively rotate.Under clutch energising or power-off effect, described clutch gear ring can engage with rotor 23 or disconnect.
When clutch gear ring engages with rotor 23, idler gear 331 is locked with rotor 23, and make mechanical reduction gear self-locking, output shaft 11, mechanical reduction gear, output sleeve 12 and rotor 23 export with rotating speed.
When clutch gear ring and rotor 23 disconnect, the fixture of clutch gear ring and motor can be made, as mounting panel engaging, make the output sleeve 12 be connected with clutch 4 be in stationary state, by mechanical reduction gear, output shaft 11 can realize low speed and export;
Now, also clutch gear ring can be made not engage with the fixture of motor, clutch gear ring is made to be in not stationary state, the output sleeve 12 be connected with clutch gear ring is also in not stationary state, while output shaft 11 low speed exports, output sleeve 12 also exports with certain speed ratio low speed, namely can realize composite power and export.Here it should be noted that, when output shaft 11 and output sleeve 12 both can be that low speed exports in the same way, also can be that reverse low speed exports.Turning to of output shaft 11 and output sleeve 12 is identical or contrary, depends on the positive and negative values of mechanical reduction gear tooth difference ratio, in actual applications, can set the tooth difference relation of mechanical reduction gear as required.
Here also it should be noted that, the mechanical reduction gear of the motor with mechanical reduction gear of this 8th kind output sleeve described in execution mode can have other shown embodiments as any in Fig. 1-7 equally, specifically if idler gear 331 and output gear 332 can be ring gear equally, it also can be external gear; Also the first gear 321 can be replaced with duplicate gear and the second gear 322 realizes identical function.
Further, when this 8th kind of execution mode provide motor application with mechanical reduction gear in washing machine field as washing machine driver time, output shaft 11 described in above execution mode can be become the wash shaft of washing machine, output sleeve 12 becomes the dehydrating shaft of washing machine, and the conversion of washing and dehydration condition is realized by clutch 4, be specially:
When clutch gear ring and rotor 23 disconnect, the fixture of clutch gear ring and motor can be made, as mounting panel engaging, the output sleeve 12 be connected with clutch gear ring is in stationary state, pass through mechanical reduction gear, output shaft 11 can realize low speed and export, and namely realizes single type of drive of washing machine; Clutch gear ring can be made not engage with the fixture of motor, clutch gear ring is made to be in not stationary state, the output sleeve 12 be connected with clutch gear ring is also in not stationary state, while output shaft 11 low speed exports, output sleeve 12 also exports with certain speed ratio low speed, namely can realize composite power to export, namely realize the even power drive mode of washing machine, realize washing function.
When the clutch gear ring of clutch 4 engages with rotor 23, idler gear 331 is locked with rotor 23, makes mechanical reduction gear self-locking, and output shaft 11, mechanical reduction gear, output sleeve 12 and rotor 23 export with rotating speed, realize dehydrating function.
Further, above-mentioned execution mode is the inner rotor motor with mechanical reduction gear, the present invention can also comprise the execution mode of the external rotor electric machine with mechanical reduction gear certainly, see Fig. 9, Fig. 9 is the transmission schematic diagram of the motor with mechanical reduction gear provided by the present invention 9th kind of embodiment, in this kind of execution mode, motor body should be comprised with the motor of mechanical reduction gear, described motor body is external rotor electric machine, specifically comprise motor stator 22 and rotor 23, rotor 23 concentric is arranged at outside motor stator 22, all the other can with the 8th kind of execution mode, mechanical reduction gear simultaneously described in it also can with in the present invention the first to any one execution mode in the 7th kind.
Further, this the 9th kind of embodiment and equally also can be applied to washing machine field as washing machine driver according to the first execution mode obtained to the 8th kind of any described change, be the wash shaft 51 output shaft 11 described in embodiment being become washing machine equally, output sleeve 12 becomes the dehydrating shaft 52 of washing machine; Equally for this 9th kind of embodiment, specifically can see Figure 10,11,12, wherein Figure 10 is that the motor with mechanical reduction gear provided by the present invention 9th kind of embodiment is applied to the perspective view of washing machine field as washing machine driver; Figure 11 is the cutaway view of Figure 10; Figure 12 is the body portion explosive view (be parts and only carried out uncomplete explosion) of Figure 10, in this kind of execution mode, should comprise motor body with the motor of mechanical reduction gear, described motor body is external rotor electric machine, specifically comprises motor stator 22 and rotor 23; Rotor 23 concentric is arranged at outside motor stator 22, rotor 23 is provided with multiple axis hole, the top of motor stator 22 is fixedly connected with mounting panel 26 by stator mounting disc 221, the mode be fixedly connected with can connect for screw fastening, can certainly be that other are fixedly connected with mode, motor with mechanical reduction gear can be arranged on washing machine by mounting panel 26, also motor stator 22 directly can be fixedly connected with mounting panel 26, then be arranged on washing machine by above-mentioned driver by mounting panel 26.
Rotor 23 can see Figure 13,14,15, specifically comprise: described rotor 23 is external rotor, specifically comprise rotor case 231, yoke 232 and some permanent magnetic steels 233, wherein: be fixedly installed on rotor case 231 lateral wall, described yoke 232 is positioned at permanent magnetic steel 233 outside and is fixedly connected with rotor case 231 described permanent magnetic steel 233 uniform intervals; Described one end, rotor case 231 side comprises extension limit 231a, and described extension limit 231a is convenient to the adhering processes operation of permanent magnetic steel; Described rotor case 231 is integrated cast aluminum construction; Described rotor case 231 lateral wall is also integrally formed with some permanent magnetic steel locating spacers 234, for the uniform intervals distribution of permanent magnetic steel 233 on rotor case 231, described permanent magnetic steel locating spacers 234 is integrally formed by cast aluminium and rotor case simultaneously; Described rotor case 231 is provided with the axis hole 231c carrying out plug-in mounting with the input gear axle 31 of mechanical reduction gear and coordinate; The quantity of described axis hole 231c is 1-10, is preferably 25; Described permanent magnetic steel 233 radius of curvature in the middle part of rotor case 231 side is greater than the radius of curvature at two ends, namely in the middle part of rotor case 231 side, forms an arc-shaped convex at permanent magnetic steel 233.The assembly method of the rotor 23 described in present embodiment can be: be first fixedly pasted onto on rotor case 231 lateral wall by permanent magnetic steel 233 uniform intervals; Then yoke 232 is covered permanent magnetic steel 233 outside, yoke 232 is fixedly connected with rotor case 231 simultaneously.Being fixedly connected with both rotor case 231 and yoke 232 are realized by chase mortise matching mechanism, can certainly adopt other to be fixedly connected with mode.
The wash shaft 51 of washing machine is coaxially installed in rotor 23, rotor oiliness bearing (scheming not shown) is provided with between wash shaft 51 and rotor 23, wash shaft 51 radial direction limits rotor 23, and realizes the relative rotation between wash shaft 51 and rotor 23 by rotor oiliness bearing.
The dehydrating shaft 52 of washing machine is sleeved in wash shaft 51, wash shaft oiliness bearing 80 is provided with between dehydrating shaft 52 and described wash shaft 51, dehydrating shaft 52 can be rotated relatively with wash shaft 51, the quantity of described wash shaft oiliness bearing 80 can be multiple, be arranged on diverse location, make dehydrating shaft 52 more stable with the relative rotation of wash shaft 51.
Described washing machine driver also comprises mechanical reduction gear, and described mechanical reduction gear comprises input gear axle 31, first gear 321, second gear 322, idler gear 331 and output gear 332; Input gear axle 31 is plugged in the axis hole of rotor 23, be provided with oiliness bearing (scheming not shown) between input gear axle 31 and rotor 23, make can realize relative rotation between input gear axle 31 and rotor 23 by oiliness bearing; First gear 321 and the second gear 322 are packed in the two ends of input gear axle 31; First gear 321 and idler gear 331 engage, and the second gear 322 and output gear 332 engage, and idler gear 331 and output gear 332 are ring gear.
Idler gear 331 is fixedly connected with one end of described dehydrating shaft 52, and the mode of being fixedly connected with can be the fastening socket of spline, and also can be that screw fastening connects, also can be that other are fixedly connected with mode; Output gear 332 is fixedly connected with wash shaft 51, and preferably, output gear 332 is moulding, on adapter sleeve 90, specifically carry out injection moulding obtain, adapter sleeve 90 passes through the fastening socket of spline with wash shaft 51 again, and also can be that screw fastening connects, also can be that other are fixedly connected with mode.
Here it should be noted that, the axis hole of rotor can be set to multiple, namely can in rotor the multiple input gear axle of plug-in mounting and the first gear coordinated with it and the second gear; The layout of multiple input gear axle can make the combination of motor and mechanical reduction gear operationally more stable, extends working life.
Described washing machine driver also comprises clutch 4, and described clutch 4 is arranged between dehydrating shaft 52 and rotor 23, to realize the conversion of washing operating mode and dehydration condition.
Described solenoid mechanism comprises solenoid 42 and clutch gear ring 41, solenoid 42 can be positioned at the inner side of clutch gear ring, also can be positioned at outside it, described solenoid 42 can comprise coil, coil holder, coil retainer, clutch cover plate (figure does not all specifically illustrate and marks), coil winding is on coil holder, coil holder is positioned on coil retainer, clutch cover plate is positioned at above coil retainer, be fixed in stator mounting disc 221 after clutch cover plate is connected with coil retainer, clutch gear ring 41 is sleeved on idler gear 331, clutch gear ring 41 and idler gear 331 engage and are in axial sliding connection.Here it should be noted that, the inner side of clutch gear ring 41 and the outside of idler gear 331 are equipped with for carrying out the tooth engaged between the two, clutch gear ring 41 and idler gear 331 are all in engagement under any operating mode, and can not produce relative rotation between the two.Described coil retainer, clutch cover plate, clutch gear ring 41, all containing permeability magnetic material, form a closed magnetic circuit between three, namely form magnetic field.Further, when stator mounting disc 221 is permeability magnetic material, stator mounting disc 221 can become clutch cover plate simultaneously, and when stator mounting disc 221 is permeability magnetic material, clutch cover plate is fixedly connected in stator mounting disc 221.Preferably, spring (scheming not shown) is fixedly connected with in clutch gear ring 41 upper end.
When producing magnetic field after electromagnetic clutch mechanism energising, clutch gear ring 41 can overcome the elastic force of spring along the axial upward sliding of idler gear 331, clutch gear ring 41 and rotor 23 are disconnected, now after electrical power, wash shaft 51 low speed can be realized by mechanical reduction gear to export, realize washing function.
It is pointed out that and can be realized common output and composite power (being also even power) output by the fixed form changing clutch 4.
Particularly, when clutch gear ring 41 disconnects with rotor 23, clutch gear ring 41 can be made to engage with stator mounting disc 221, the idler gear 331 be now connected with clutch gear ring 41 and dehydrating shaft 52 are in stationary state, thus only have wash shaft 51 low speed to export as common washing exports, also referred to as washing machine list type of drive when washing operating mode; When clutch gear ring 41 and rotor 23 disconnect and do not fix, here fixedly do not refer to that clutch gear ring 41 does not engage with any parts being in stationary state, namely the idler gear 331 be connected with clutch gear ring 41 and dehydrating shaft 52 are also in not stationary state, now while wash shaft 51 low speed exports, dehydrating shaft 52 also exports by certain speed ratio low speed, namely can realize composite power to export, also referred to as the even power drive mode of washing machine, here it should be noted that, wash shaft 51 and dehydrating shaft 52 both with turning to low speed to export, also can oppositely can export.Turning to of wash shaft 51 and dehydrating shaft 52 is identical or contrary, depends on the positive and negative values of gear reduction tooth difference ratio, in actual applications, can set the tooth difference relation of gear reduction as required.
When after electromagnetic clutch mechanism power-off, magnetic field dissipate, under the elastic force effect of spring, clutch gear ring 41 is along the axial slide downward of idler gear 331, clutch gear ring 41 is engaged with rotor 23, owing to not producing relative rotation between clutch gear ring 41 with idler gear 331, so now idler gear 331 and the dehydrating shaft 52 be connected with idler gear 331 and rotor 23 locked, thus cause mechanical reduction gear self-locking, wash shaft 51, mechanical reduction gear, dehydrating shaft 52 and the same rotational speed of rotor 23, realize dehydrating function.
The concrete structure of described clutch gear ring 41 illustrate see the applicant in first patent application, application number is the related text explanation about clutch gear ring in CN201210084877.4.
Described stator mounting disc 221 and rotor 23 are respectively equipped with the upper slot parts (scheming not shown) and lower slot parts (231b) that fixedly engage with the upper gear shaping of clutch gear ring 41 and lower gear shaping.
Here also it should be noted that, when being directly fixedly connected with mounting panel 26 by motor stator 22, the annexation of above-mentioned electromagnetic clutch mechanism and stator mounting disc 21 then all replaces with the annexation of electromagnetic clutch mechanism and mounting panel 26.
It should be noted that simultaneously, the structures such as stator mounting disc 221 of the present invention, mounting panel 26 and upper slot too can see the applicant in first patent application, application number is the structural design of CN201210084877.4, according to actual needs, also can be fixedly installed bear box etc. on mounting panel 26 equally.
The present invention also can according to mounting structure demand, described clutch gear ring 41 also can pass through spline (being specifically as follows spline housing) and engages with dehydrating shaft 52 and be in axial sliding connection, and function and the effect of itself and above-mentioned clutch gear ring 41 and idler gear 331 are in fact identical.
Here also it should be noted that, also clutch 4 can be arranged on other driving members of mechanical reduction gear and carry out engaging or disconnect the conversion realizing washing operating mode and dehydration condition with between rotor 23 or between the driving member being set directly at mechanical reduction gear; As long as the setting of clutch 4 can realize the conversion of washing of drum type washing machine operating mode and dehydration condition.
Due to when dehydration condition, dehydrating shaft 52 will bear the weight of washing clothes, in order to limit moving axially of dehydrating shaft 52, plane bearing, plain cushion and circlip (scheming all not shown) can be set between dehydrating shaft 52 and idler gear 331 and limit the movement of dehydrating shaft 52 at its axis direction, load-bearing jump ring or the load-bearing effect of bearing pad realization to dehydrating shaft 52 can also be set simultaneously on dehydrating shaft 52 diverse location.
In order to enable wash shaft 51 and dehydrating shaft 52 more stably rotate when dehydration condition, between dehydrating shaft 52 and mounting panel 26, being provided with clutch shaft bearing 831, between dehydrating shaft 52 and stator mounting disc 221, being provided with the second bearing 832.
Further, the first water seal (scheming not shown) is provided with between wash shaft 51 and dehydrating shaft 52, also little water seal is cried, the second water seal 60 is provided with between dehydrating shaft 52 and mounting panel 26, also crying large water seal, entering washing machine internal drive for preventing washings in the washing machine course of work.
Clutch 4 described in above embodiment is electromagnetic clutch mechanism, natch, also can be the mechanical clutch mechanism in common practise, believe that those skilled in the art is on basis of the present invention, mechanical clutch mechanism not substituted electromagnetic clutch mechanism with needing cost creative work.
Due to the connection for realizing each parts described in above-mentioned execution mode, load-bearing, axially and radial direction spacing, sealing function bearing used, jump ring, pad, circlip, plane bearing, packing ring, the structures such as sealing ring all belong to the conventional design means of those skilled in the art, execution mode of the present invention may exist can not make full disclosure to these structures, but believe that these do not possess novelty and creationary, natch, concrete setting also can directly see the text description in first patent application of the applicant, application number is CN201210084877.4.
Mechanical reduction gear simultaneously described in above execution mode is NN type gear with small teeth difference deceleration device, this can make the present invention obtain larger gearratio, natch, mechanical reduction gear described according to actual needs can also be NGW mechanical reduction gear, be specifically as follows: idler gear is ring gear, comprise the idler gear, input gear, the output gear that engage successively, described idler gear can be sleeved on described output shaft with the relative rotation, and input gear is external gear and is sleeved on output gear shaft.
Above the motor with mechanical reduction gear provided by the present invention is described in detail.Apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above execution mode just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection range of the claims in the present invention.

Claims (8)

1. a rotor, described rotor comprises rotor case, yoke and some permanent magnetic steels, it is characterized in that: be fixedly installed on rotor case lateral wall, described yoke is positioned at permanent magnetic steel outside and is fixedly connected with rotor case described permanent magnetic steel uniform intervals;
Described rotor case is provided with the axis hole carrying out plug-in mounting with the input gear axle of mechanical reduction gear and coordinate;
The input gear of described mechanical reduction gear can be arranged on rotor by relative rotor rotatably by input gear axle, the output gear of described mechanical reduction gear is fixedly connected with output shaft, spacing in order to carry out radial direction to rotor, output shaft is coaxial and can be arranged on rotatably on rotor by relative rotor.
2. a kind of rotor as claimed in claim 1, is characterized in that: described one or both ends, rotor case side comprise extension limit.
3. a kind of rotor as claimed in claim 1, is characterized in that: described rotor case is integrated cast aluminum construction.
4. a kind of rotor as described in claim 1 or 2 or 3, is characterized in that: described rotor case lateral wall is also integrally formed with some permanent magnetic steel locating spacers.
5. a kind of rotor as claimed in claim 1, is characterized in that: the quantity of described axis hole is 1-10.
6. a kind of rotor as described in claim 1 or 2 or 5, is characterized in that: described permanent magnetic steel radius of curvature in the middle part of rotor case side is greater than the radius of curvature at two ends.
7. as claim 1-6 arbitrarily as described in the assembly method of rotor, it is characterized in that: its operating procedure is:
(1), permanent magnetic steel uniform intervals is fixedly pasted onto on rotor case lateral wall;
(2), then yoke is covered permanent magnetic steel outside, yoke is fixedly connected with rotor case simultaneously.
8. an assembly method for rotor as claimed in claim 7, is characterized in that: described rotor case is provided with the fit structure be fixedly connected with yoke, and yoke is provided with the fit structure be fixedly connected with rotor case.
CN201210288195.5A 2012-08-14 2012-08-14 Motor rotor and assembly method thereof Expired - Fee Related CN102820720B (en)

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Publication number Priority date Publication date Assignee Title
EP2746086B1 (en) * 2012-12-18 2016-04-27 C.R.F. Società Consortile per Azioni Gear-change device for a motor vehicle
CN105978254A (en) * 2016-06-29 2016-09-28 无锡新大力电机有限公司 Magnetic steel installation technological method for permanent magnet motor

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Publication number Priority date Publication date Assignee Title
CN1154590A (en) * 1995-12-11 1997-07-16 株式会社三叶 Rotor of magnetic generator
CN202178626U (en) * 2011-08-02 2012-03-28 佛山市威灵洗涤电机制造有限公司 Rotor magnetic steel for permanent magnet synchronous motor
CN202203305U (en) * 2011-08-01 2012-04-25 台州市黄岩华阳机电科技有限公司 Centrifugal clutch and electric car gear-shifting drive hub with the same
CN202737607U (en) * 2012-08-14 2013-02-13 常州至精精机有限公司 A motor rotor

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Publication number Priority date Publication date Assignee Title
JP2007037288A (en) * 2005-07-27 2007-02-08 Meidensha Corp Rotor for permanent magnet type rotary electric machine and its manufacturing process
FR2945388B1 (en) * 2009-05-11 2013-04-12 Moving Magnet Technologies M M T Three-phase electric motor with low relief torque

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1154590A (en) * 1995-12-11 1997-07-16 株式会社三叶 Rotor of magnetic generator
CN202203305U (en) * 2011-08-01 2012-04-25 台州市黄岩华阳机电科技有限公司 Centrifugal clutch and electric car gear-shifting drive hub with the same
CN202178626U (en) * 2011-08-02 2012-03-28 佛山市威灵洗涤电机制造有限公司 Rotor magnetic steel for permanent magnet synchronous motor
CN202737607U (en) * 2012-08-14 2013-02-13 常州至精精机有限公司 A motor rotor

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