CN107636223A - Drive unit of washing machine and there is its washing machine - Google Patents

Abstract

The present invention relates to can high efficiency provide washing machine washing and dehydrating stroke in required for different qualities driving force drive unit of washing machine and there is its washing machine.Above-mentioned drive unit of washing machine is characterised by, including：The drive motor of birotor bimorph transducer mode, including internal rotor output and outer rotor output can optionally be produced by the internal rotor and outer rotor of bimorph transducer independent control；Interior axle is inputted, for transmitting above-mentioned internal rotor output or outer rotor output；Outer shaft is inputted, is combined in a manner of it can rotate with the periphery of above-mentioned input interior axle, for transmitting above-mentioned outer rotor output or internal rotor output；And epicyclic gearing, axial central gear applies internal rotor output or when outer rotor exports in by above-mentioned input, and the gear ratio exported from speed change caused by planet carrier is received through the control of the outer rotor output that axial ring gear applies outside above-mentioned input or internal rotor output.

Description

Drive unit of washing machine and there is its washing machine

Technical field

The present invention relates to the double dynamical drive motor and epicyclic gearing by combining birotor bimorph transducer mode, with High efficiency provides the drive unit of washing machine of the driving force of the different qualities required in the washing of washing machine and dehydrating stroke And there is its washing machine.

Background technology

Have both the automatic washing machine of dehydrating function conventional, as the swivelling chute of sink and dehydration groove with can The mode of rotation is arranged in water jacket, also, stirring body (impeller) is arranged in a manner of it can rotate in above-mentioned swivelling chute Bottom.Therefore above-mentioned stirring body and swivelling chute, when washing operating, are entered by a drive motor rotation driving to swivelling chute In the state of row braking stops, the rotation of drive motor is transmitted to stirring body, is just being reversed by than relatively low speed, is working as dehydration During operating, by releasing braking to swivelling chute, come the rotation of drive motor do not slowed down to swivelling chute and stirring body transmission Turn, so that both carry out rotation driving.

, need to be from motor to swivelling chute and untill stirring body in order to realize the conversion of rotation bang path as described above Clutch configuration or reducing gear are set in revolving force bang path.Therefore, structure becomes considerably complicated, so as to cause manufacturing And the reduction of assembleability, ultimately cause manufacturing cost and uprise.Also, manufacture precision or long-term thermalization because of clutch mechanism, Cause control circuit bang path switching motion and have some setbacks, so as to cause switching reliability to become unstable.

Especially, exist when from washing be transformed into dehydration operating when generation clutch mechanism switching motion sound or The souffle problem of operation sound is produced in reducing gear, also, the switching motion of clutch mechanism needs the time, thus washing be present The problem of elapsed time is elongated.

Conventional automatic washing machine includes clutch motor, and optionally to wash shaft and dehydrating shaft passing power, Therefore, it is impossible to the problem of independent driving is dehydrated groove and impeller simultaneously, thus presence can not form a variety of washing current.

Also, in conventional automatic washing machine, low speed, high torque characteristic are performed using single drive motor Washing stroke and at a high speed, the dehydrating stroke of low torque characteristic, accordingly, there exist can not realize each stroke optimize motor set The problem of meter.Finally, the motor optimized to washing stroke is designed, implements so-called low-intensity magnetic field control in dehydrating stroke, with This solves high speed Rotation during dehydrating stroke, but control becomes complicated.

Therefore, in order to solve the problems, such as to need high torque when washing stroke and need weak-field control during when dehydrating stroke Problem, propose that there is planetary gear set and clutch in Korean granted patent publication the 10-0548310th (patent document 1) The technology of device mechanism.

Washing machine in patent document 1 has the planet tooth for including central gear, ring gear, planetary gear and planet carrier Wheel assembly, by reducing the revolving force of drive motor come to impeller transmission, by making clutch spring be operable to impeller With the optionally passing power of one in inside groove, when being washed, impeller only is rotated, when being dehydrated, make impeller Rotated simultaneously with inside groove.Also, when carrying out washing stroke, in order to reduce the revolving force inputted to central gear, patent document 1 In washing machine have by the structure of clutch stationary annular gear (that is, the shell of planetary gear set).

But such as patent document 1, in the washing machine with planetary gear set, planetary gear set is by an axis of orientation Support is held, therefore, impeller and inside groove can only rotate to equidirectional, and use single drive motor, therefore, in washing stroke In, it is difficult to embody the washing current of strength by making impeller and inside groove rotate round about.

As solutions to solve the above problems were, in No. 10-1999-0076570 (patent of Korean Patent Laid Document 2) in propose to remove planetary gear set and use the washing machine for having both dehydrating function of double acting force motor.

Having both the washing machine of dehydrating function in patent document 2, washing motor has a low speed and large torque motor characteristics, Dehydration motor has high speed low torque motor characteristics, and above-mentioned washing motor is diametrically more than the outer-rotor type of dehydration motor, dehydration Motor is in inner-rotor type, and washing motor is in outside, and dehydration motor is in inner side.

In washing machine in above-mentioned patent document 2, washing motor is outer-rotor type, and diameter is more than the straight of dehydration motor Footpath, still, in more than 8kg high-capacity washing machine, at the deficiency of driving torque can not be to Large Copacity washings Reason.

Especially, in the washing machine in above-mentioned patent document 2, diameter, the configuration for being more than dehydration motor by diameter are formed The structure of stirring body is driven in the washing motor of outside, the outer-rotor type with low speed and large torque motor characteristics, thus is difficult By making the swivelling chute of the bigger starting torque of needs be driven round about with stirring body to embody the washing current of strength.

Therefore, although washing machine in above-mentioned patent document 2 propose using 2 drive motors come independently drive stirring body with The structure of swivelling chute, still, in high-capacity washing machine, it is hardly formed the washing current using the various ways of high torque.

The content of the invention

Technical problem

Therefore, the present invention proposes to solve the above problems, and it is an object of the present invention to provide the drive of following washing machine Move device and there is its washing machine, i.e. by the double dynamical drive motor and planetary gear that combine birotor bimorph transducer mode Device, the driving force of the different qualities required for being provided with high efficiency in the washing of washing machine and dehydrating stroke.

It is a further object of the present invention to provide following drive unit of washing machine and there is its washing machine, i.e. with The first output for meeting low speed, high torque characteristic is produced when in washing stroke, is produced when in dehydrating stroke and meets height Speed, the second of low torque characteristic are exported to be driven, and can embody efficient high-capacity washing machine.

Another object of the present invention is to, there is provided following washing machine, i.e. impeller and sink can be independently driven, Epicyclic gearing is set to be rotated to two directions, can be in washing stroke so as to embody double dynamical and single-power Embody a variety of water flow modes.

Solution to problem

In accordance with the first feature of the invention, the present invention provides drive unit of washing machine, it is characterised in that including：Birotor The drive motor of bimorph transducer mode, including can optionally be produced by the internal rotor and outer rotor of bimorph transducer independent control Internal rotor exports and outer rotor output；Interior axle is inputted, for transmitting above-mentioned internal rotor output or outer rotor output with the first input； Outer shaft is inputted, is combined in a manner of it can rotate with the periphery of above-mentioned input interior axle, it is above-mentioned outer for being transmitted with the second input Rotor exports；And epicyclic gearing, when axial central gear applies the first input in by above-mentioned input, from planet carrier The gear ratio of caused speed change output is received through the control for the second input that axial ring gear outside above-mentioned input applies.

According to the second feature of the present invention, the present invention provides washing machine, it is characterised in that including：Drive motor, including it is only Vertical the first motor and the second motor for producing the first rotation output and the second rotation output；Interior axle is inputted, for transmitting above-mentioned the One rotation output；Outer shaft is inputted, is combined in a manner of it can rotate with the periphery of above-mentioned input interior axle, for transmitting above-mentioned the Two rotation outputs；Speed change gear, when axial central gear applies the first rotation output in by above-mentioned input, produced from planet carrier The gear ratio of raw speed change output is received through the control for the second rotation output that axial ring gear outside above-mentioned input applies；It is defeated Go out interior axle, exported for transmitting from speed change caused by above-mentioned planet carrier；Export outer shaft, in a manner of it can rotate with above-mentioned output The periphery of interior axle is combined, for transmitting from output caused by above-mentioned ring gear；Sink, it is connected with above-mentioned output outer shaft Connect；And impeller, it is connected with above-mentioned output interior axle.

The effect of invention

, can be by combining the double dynamical drive motor and planet of birotor bimorph transducer mode as described above, in the present invention Geared system, the driving force of the different qualities required for being provided with high efficiency in the washing of washing machine and dehydrating stroke.

In the present invention, the first output for meeting low speed, high torque characteristic with when in washing stroke, producing, when During in dehydrating stroke, produce and meet that high speed, the second of low torque characteristic are exported to be driven, thus can embody efficient High-capacity washing machine.

In the present invention, impeller and sink can be independently driven, epicyclic gearing can be made to be revolved to two directions Turn, so as to embody double dynamical and single-power, a variety of water flow modes can be embodied in washing stroke.

In the present invention, by being driven to applying the internal rotor for being used for the revolving force that impeller drives or outer rotor The number of teeth of stator core be more than outer rotor to applying the revolving force for being used for driving sink to drive or internal rotor is driven The number of teeth of stator core, so as to seek to make efficiency increase.

Also, in the drive motor of the present invention, external stator core is different with the thin slice stacking number of inner stator core, so as to mend Fill the driving torque of deficiency.

Brief description of the drawings

Fig. 1 is the direction of principal axis sectional view of the washing machine of the drive unit of washing machine with first embodiment of the invention.

Fig. 2 is the direction of principal axis sectional view of the drive unit of washing machine shown in Fig. 1.

Fig. 3 is the enlarged partial cross section of the drive unit of washing machine shown in Fig. 2.

Fig. 4 a and Fig. 4 b are respectively that the direction of principal axis for the epicyclic gearing for being applied to the drive unit of washing machine of the present invention cuts open View and diametric(al) sectional view.

Fig. 5 is more with tooth (slot) the number identical complete parttion type by assembling external stator of the invention and inner stator The diametric(al) sectional view of the drive motor of the individual stator for splitting core to form.

Fig. 6 is the diagrammatic cross-sectional view for the stator core assembly of the stator assembling in Fig. 5.

Fig. 7 is the top view of the segmentation core of the stator core shown in pie graph 6.

Fig. 8 a and Fig. 8 b are with the partial segmentation type different with the number of teeth of inner stator of the external stator by assembling the present invention The diametric(al) sectional view of the drive motor of multiple stators for splitting cores to form and the structure chart of partial segmentation type segmentation core.

Fig. 9 a to Fig. 9 c be respectively the external stator inner stator core different with the number of teeth of inner stator of the present invention, external stator core and With by assembling inner stator core and external stator core the diametric(al) sectional view of the drive motor of stator core that forms.

Figure 10 a to Figure 10 d are respectively to show in the drive motor of the present invention by making external stator core and inner stator core Stacking number difference come supplement deficiency driving torque various embodiments structure diagrammatic cross-sectional view.

Figure 11 is the direction of principal axis sectional view of the drive unit of washing machine of second embodiment of the invention.

Figure 12 is the direction of principal axis sectional view of the drive unit of washing machine of third embodiment of the invention.

Figure 13 is the block circuit diagram of the drive unit of washing machine of the present invention.

Figure 14 is the flow chart for showing the washing machine entirety driving method of the present invention.

Embodiment

Hereinafter, referring to the drawings, embodiments of the invention are described in detail.In the process, for the definition and just of explanation Profit, the size or shape of the structural element shown in figure etc. can be exaggerated.

Referring to figs. 1 to Fig. 5, the washing machine of first embodiment of the invention includes：Shell 100, for forming profile；Water jacket 110, the inside of shell 100 is configured at, for housing washings；Sink 120, it is configured in a manner of it can rotate above-mentioned outer The inside of groove 110, for performing washing and dehydration；Impeller 130, above-mentioned sink 120 is configured in a manner of it can rotate Bottom, current are washed for being formed；Drive unit of washing machine 150, the bottom of above-mentioned sink 120 and water jacket 110 is arranged at, used In simultaneously or selectively being provided to sink 120 and impeller 130 for washing stroke, rinsing stroke, release stroke and dehydration The driving force of stroke etc..

Above-mentioned drive unit of washing machine 150 includes：The drive motor 140 of birotor bimorph transducer mode, is installed on water jacket 110 Bottom, for from internal rotor 40 and outer rotor 50 produce at a high speed, low torque it is double dynamical；Planet as torque conversion device Geared system 70, receiving in a manner of making above-mentioned impeller 130 and sink 120 rotation driving by above-mentioned drive motor 150 Internal rotor 40 and outer rotor 50 provide high speed, low torque first input and second input, with provide meet washing row First output of low speed, high torque characteristic needed for journey and rinsing stroke and meet high speed needed for dehydrating stroke, low torsion The mode of second output of square characteristic optionally carries out speed change (torque conversion).

First, epicyclic gearing 70 is arranged between drive motor 140, impeller 130 and sink 120, drive motor The output of 140 internal rotor 40 is transmitted by inputting interior axle 30 to central gear 74, and the output of outer rotor 50 is by inputting outer shaft 20 transmit to ring gear 72.

Afterwards, center of the first input of the high speed, low torque that are inputted to input interior axle 30 Jing Guo epicyclic gearing 70 Gear 74 and planetary gear 78 and by after speed change (torque conversion), are exported to output interior axle 32 with planet carrier 76 and transmitted, passed through Second input of high speed, low torque that input outer shaft 20 transmits to ring gear 72 is with the side of no generation speed change (torque conversion) Formula is transmitted to output outer shaft 22.Describe structure and the action of epicyclic gearing 70 in detail in aftermentioned content.

As shown in Figures 2 and 3, drive motor 140 includes：Internal rotor 40, it is connected with input interior axle 30；Outer rotor 50, It is connected with input outer shaft 20；Stator 60, configured between internal rotor 40 and outer rotor 50 across space, for making internal rotor 40 With the rotation driving of outer rotor 50.Said stator 60 is in make the double-stator structure that internal rotor 40 and outer rotor 50 independently drive respectively.

Thus, stator 60 so that the first driver 530 shown in Fig. 9 and the second driver 540 can be utilized come optionally or Independently drive the mode of internal rotor 40 and outer rotor 50 that there is external stator and inner stator.Hereinafter, saying in embodiment described later In bright, external stator and inner stator are formed and are integrated, but can also be in the structure of separation.

Include between drive motor 140 and epicyclic gearing 70：Interior axle 20 is inputted, as the first power transfer line, For transmitting the output of internal rotor 40 to the central gear 74 of epicyclic gearing 70；And input outer shaft 30, that can rotate Mode be combined with the periphery of above-mentioned input interior axle 30, receive outer rotor 50 output come to epicyclic gearing 70 annular Gear 72 transmits.

Also, include between epicyclic gearing 70 and impeller 130 and sink 120：Interior axle 32 is exported, as second Power transfer line, the planet carrier 76 for transmitting epicyclic gearing 70 to impeller 130 export；And output outer shaft 22, with energy The mode enough rotated is combined with the periphery of above-mentioned output interior axle 32, and the output for receiving ring gear 72 passes to sink 120 Pass.

As shown in Fig. 2 to Fig. 4 b, epicyclic gearing 70 includes：Ring gear 72, both ends with input outer shaft 20 with it is defeated Go out between outer shaft 22 and be connected；Central gear 74, it is connected in a unitary manner with above-mentioned input interior axle 30, tooth is formed in periphery Wheel；Multiple planetary gears 78, according to the rotation of above-mentioned central gear 74, rotation is carried out centered on rotary shaft 78a respectively, it is and upper The inside face gear of the exterior face and ring gear 72 of stating central gear 74 is engaged and revolved round the sun；Planet carrier 76, in peripheral part, The rotary shaft 78a of above-mentioned multiple planetary gears 78 is supported in a manner of it can rotate, is revolved round the sun with multiple planetary gears 78, it is interior All portions are connected with output interior axle 32, to transmit the output of speed change.

In this epicyclic gearing 70, input outer shaft 20 and output outer shaft 22 are connected by ring gear 72, so as to, The rotating speed (RPM) for inputting outer shaft 20 directly transmits to output outer shaft 22.Therefore, input outer shaft 20 and export the rotating speed phase of outer shaft 22 Together.

Also, in the inside of epicyclic gearing 70, input interior axle 30 and central gear 74 is formed and is integrated, export interior axle 32 are combined by spline, sawtooth (Serration) combines etc. is connected with the inner peripheral portion of planet carrier 76, the periphery of planet carrier 76 Portion supports the rotary shaft 78a of multiple planetary gears 78 in a manner of it can rotate.Finally, turned by inputting in the transmission of interior axle 30 The rotating speed of son 40 is by central gear 74, multiple planetary gears 78, planet carrier 76 and speed change, i.e. slows down, increase moment of torsion, so as to Transmitted to output interior axle 32.

As described above, input interior axle 30 and output interior axle 32 are interconnected by epicyclic gearing 70, internal rotor 40 Rotating speed transmits after being decelerated to impeller 130, can increase the moment of torsion of impeller 130, thus, is applicable to when in washing and rinsing The high-capacity washing machine for needing high torque to drive during stroke.

It will be described below in content and illustrate the detailed effect of epicyclic gearing 70.

Between the outer peripheral face of input interior axle 30 and the inner peripheral surface of input outer shaft 20, the first sleeve bearing 80 of cylinder form And second sleeve bearing 82 is across interval setting, so as to be supported in a manner of it can rotate to input interior axle 30.

Moreover, the inside face in the upper end of output outer shaft 22 and lower end sets 3rd sleeve bearing 84 and 4th sleeve bearing 86, so as to be supported in a manner of it can rotate to output interior axle 32.

The first connecting portion being connected with the outer rotor supporter 56 of outer rotor 50 is formed in the exterior face of input outer shaft 20 90, the second connecting portion 92 being connected with the internal rotor supporter 46 of internal rotor 40 is formed in the lower end of input interior axle 30.

First connecting portion 90 and second connecting portion 92 can be in by being formed at input outer shaft 20 and inputting the outside of interior axle 30 The structure that the projection sawtooth in face combines or spline combines, can be in be bonded the structure of conjunction mutually by forming keyway.

Wherein, it is connected to prevent that outer rotor supporter 56 departs from from input outer shaft 20 in the lower end of input outer shaft 20 One fixing nut 34, it is threadedly coupled what is departed from for preventing the internal rotor supporter 46 of internal rotor 40 in the lower end of input interior axle 30 Second fixing nut 36.

The 3rd connecting portion 94 being connected with sink 120 is formed in the upper end outer peripheral face of output outer shaft 22, in output The upper end exterior face of axle 32 forms the 4th connecting portion 96 being connected with impeller 130.

3rd connecting portion 94 and the 4th connecting portion 96 can be in by being formed at output outer shaft 22 and exporting the outside of interior axle 32 The projection in face carrys out the structure that sawtooth combines or spline combines, and can be in be bonded the structure of conjunction mutually by forming keyway.

First seal 220 for preventing washings leak is installed between output outer shaft 22 and output interior axle 32, Second seal 221 for preventing washings leak is installed between output outer shaft 22 and bearing outer cover 10.

Clutch shaft bearing 26 is configured in the exterior face of input outer shaft 20, second bearing is configured in the exterior face of output outer shaft 22 28, so as to be supported in a manner of it can rotate to input outer shaft 20 and output outer shaft 22.

Clutch shaft bearing 26 is arranged at clutch shaft bearing outer cover 102, and second bearing 28 is arranged at second bearing outer cover 10.

Clutch shaft bearing outer cover 102 includes：Clutch shaft bearing placement section 104, is formed by metal material, for placing clutch shaft bearing 26；Cap 106, extend in outward direction from clutch shaft bearing placement section 104, cylindrical state, with epicyclic gearing 70 Exterior face configures across the mode that regulation gap surrounds, so as to protect epicyclic gearing；Flat part 108, from the upper of cap 106 End extends in outward direction, in plectane form, for fixed stator 60 and water jacket 110.Flat part 108 is circumferentially Two bearing outer covers 10 are connected by multiple bolts 250.

Second bearing outer cover 10 includes：Second bearing placement section 12, is formed by metal material, for placing second bearing 28；Second seal fixed part 14, extend in outward direction from second bearing placement section 12, for fixing second seal 221； Connecting portion 16, bent from 14 downward side direction of second seal fixed part, cylindrical state；Flat part 18, from connecting portion 16 Lower end extends in outward direction, is fixed on water jacket 110.Flat part 18 is connected to the flat of clutch shaft bearing outer cover 102 by bolt 250 Plate portion 108, stator supporter 270 and water jacket 110 are fixed on by bolt 260.

In the case, in the present invention, to insertion connection planetary gear dress between input outer shaft 20 and output outer shaft 22 Put 70 ring gear 72, the clutch shaft bearing 26 of support input outer shaft 20 and the second bearing 28 of support output outer shaft 22 are by can be double Formed to the bearing of rotation.

Finally, in the present invention, epicyclic gearing 70 can carry out bidirectional rotation, and this structure will form different from the past Supporting construction, in conventional electric washer, form epicyclic gearing and maintain fixed state or in order to be dehydrated row Journey and the supporting construction only rotated to a direction.

In the present invention, as described below, epicyclic gearing 70 can bidirectional rotation, therefore, by by birotor bimorph transducer The drive motor 140 of the double dynamical structure formed, sink 120 and impeller 130 simultaneously or selectively and to equidirectional and Opposite direction rotates, and forms washing current and the effect of various ways.

Hereinafter, reference picture 2, Fig. 3 and Fig. 5, the driving horse for the double dynamical structure being made up of birotor bimorph transducer is described in detail Up to 140.

Drive motor 140 includes outer rotor 50, internal rotor 40 and stator 60, and stator 60 is optionally or independent can to drive The mode of dynamic outer rotor 50 and internal rotor 40 has external stator and inner stator., will be right respectively in the explanation of embodiment described later The integral structure and divergence type structure of external stator and inner stator illustrate.

First, as shown in figure 5, internal rotor 40 includes：Multiple first magnet 42, stitched in the inside face of stator 60 across regulation Gap is configured, and N poles and S poles are alternately arranged；First back yoke 44, it is configured at the back side of above-mentioned first magnet 42；And internal rotor support Body 46, formed and be integrated with the first magnet 42 and the first back yoke 44 by embedding and injection molding.

Wherein, internal rotor supporter 46 by by heat reactive resin be molded come with the first magnet 42 and the first back yoke 44 Formation is integrated, for example, by polyester fiber etc. BMC (BMC, Bulk Molding Compound) moulding material or Thermoplastic resin is molded to be integrated to be formed with the first magnet 42 and the first back yoke 44.

The medial end of internal rotor supporter 46 is connected with inputting the second connecting portion 92 of interior axle 30, in outboard end Exterior face fixes the first magnet 42 and the first back yoke 44, and inner side houses epicyclic gearing 70, so that can embody cramped construction The substantially cup-shaped shape of mode.

Therefore, if internal rotor 40 is rotated, input interior axle 30 rotated, when ring gear 72 fixed or to When the direction opposite with the direction of rotation of internal rotor 40 is rotated, by the planet carrier 76 of epicyclic gearing 70, deceleration Export and transmitted to output interior axle 32, the impeller 130 being connected with output interior axle 32 is revolved by low speed, high torque revolving force Turn.

Wherein, the rotation torque required for impeller 130 is little, therefore, fully can be rotated by the moment of torsion of internal rotor 40.

Also, outer rotor 50 includes：Multiple second magnet 52, stator 60 exterior face across regulation slot arrangement, N poles And S poles are alternately arranged；Second back yoke 54, it is configured at the back side of above-mentioned second magnet 52；And outer rotor supporter 56, pass through edge Embedding injection, formed and be integrated with the second magnet 52 and the second back yoke 54.

Wherein, outer rotor supporter 56 by by heat reactive resin be molded come with the second magnet 52 and the second back yoke 54 Formation is integrated, for example, being molded and second by the BMC moulding material or thermoplastic resin of polyester fiber etc. The back yoke 54 of magnet 52 and second is formed and is integrated.

The medial end of outer rotor supporter 56 is connected with inputting the first connecting portion 90 of outer shaft 20, with inputting outer shaft 20 Rotating together with, the second magnet 52 and the second back yoke 54 are fixed in the inside face of outboard end, inner side houses epicyclic gearing 70, The substantially cup-shaped shape in a manner of it can embody cramped construction, outside is by can be in a manner of housing stator 60 in the cup-shaped of upset.

Therefore, if the central gear 74 of epicyclic gearing 70 is set to transitory state, or internal rotor 40 with it is outer Rotor 50 is rotated to identical direction and rotates outer rotor 50, then inputting outer shaft 20 can be rotated, and be filled by planetary gear 70 ring gear is put, the revolving force of outer rotor 50 is transmitted in a manner of no deceleration to output outer shaft 22, with exporting outer shaft 22 The sink 120 being connected is rotated in a manner of no deceleration.

Hereinafter, the stator of the present invention is illustrated.

Reference picture 5 to Fig. 7, stator 60 includes：Multiple stator core assemblies 61, arrangement circularizes；Stator supporter 270 (reference picture 2), multiple arrangements of stator core assembly 61 circularize, and peripheral part is fixed on water jacket 110, internally forms through hole.

As shown in FIG. 6 and 7, above-mentioned multiple stator core assemblies 61 include respectively：Split core pattern stator core 62, be arranged in Annular is combined with each other；Bobbin 64, in a manner of the outer peripheral face in each segmentation core pattern stator core 62 limits coil wrapping range Surrounded, formed by the natural materials of nonmagnetic material；First coil 66, it is wound in side (outside) bobbin of stator core 62； And second coil 68, it is wound in opposite side (inner side) bobbin of stator core 62.

After circumferentially assembling arranges multiple stator core assemblies 61 in a mold, stator supporter 270 passes through Embedding and injection molding is integrated to be formed with multiple stator core assemblies 61.Stator supporter 270 is with central portion configuration internal rotor 40 Through hole is formed with the mode of epicyclic gearing 70, peripheral part bends to 2 sections to surround outer rotor 50, leading section and the second axle Hold outer cover 10 and water jacket 110 is together fixed on by bolt 260.

Also, the structure of stator supporter 270 by embedding and injection molding to be formed with stator core assembly 61 except being integrated Structure outside, be also applicable to using resin or metal material come with stator core assembly 61 it is separately manufactured after make stator core Assembly 61 and 270 bolted structure of stator supporter.

As shown in fig. 6, the present invention stator 60 can by with shown in Fig. 5 annular shape assembling using it is multiple split cores and The multiple stator core assemblies 61 formed form.

In the embodiment explanation shown in Fig. 5 and Fig. 6, illustrate to be circularized by the stator core arrangement of convolute coil 66,68 The example formed multiple segmentation core pattern stator cores 62 for interconnecting, still, the invention is not limited in this, stator core can also be by One-piece type or partial segmentation core is formed.

When comparing segmentation core pattern stator core 62 and integrated stator core, cheap common up- coiler can be used in coil winding It can be manufactured with low cost, and the loss of core material can be reduced.

In the embodiment shown in fig. 5, each teeth portion is formed using a Splittable stator core respectively, or, it is several Teeth portion, for example, 3 teeth portion are manufactured into a Splittable stator core and assembled to it.Especially, in U, V, W three-phase drive In brushless direct-current (BLDC) motor of mode, for the phase (phase) in U, V, W, to the feelings of 3 continuous convolute coils of teeth portion Under condition, it is preferable that 3 teeth portion can be manufactured into a Splittable stator core.

As shown in Figures 5 to 7, above-mentioned segmentation core pattern stator core 62 includes：First teeth portion 312, outside is configured at, for rolling up Around first coil 66；Second teeth portion 310, it is formed on the inside of the opposite side of the first teeth portion 312, for winding the second coil 68；Draw Branch 314, for dividing between the first teeth portion 312 and the second teeth portion 310；And joint portion 320,322, it is formed at division 314 side direction both-side ends part, for making to interconnect between segmentation core pattern stator core 62.

The stator 60 of the present invention in a manner of driving outer rotor 50 and internal rotor 40 by being wound in the of stator core 62 respectively The first coil 66 of one teeth portion 312 forms external stator, be wound in the second teeth portion 310 of stator core 62 the second coil 68 form in Stator, so as to form bimorph transducer.

Also, in the explanation of the first embodiment shown in Fig. 5 and Fig. 6, exemplified with by make each tooth core separate come Form multiple segmentation core pattern stator cores 62, but as shown in Fig. 9 a to Fig. 9 c, can be separated on the basis of the back yoke of annular come with It is separated into after external stator is manufactured with stator core and inner stator with the mode of stator core and is assembled.

In the present invention, as shown in figure 13, from the first driver 530 and the second driver 540 respectively to composition external stator First coil 66 and form inner stator the second coil 68 apply drive signal, drive outer rotor 50 and internal rotor respectively with this 40。

Wherein, apply the first drive signal to first coil 66, apply the second drive signal to the second coil 68, therefore, If only applying drive signal to first coil 66, only rotated outer rotor 50, driven if only applying to the second coil 68 Signal, then only rotated internal rotor 40, it is outer to turn if applying drive signal to the coil 68 of first coil 66 and second simultaneously Son 50 and internal rotor 40 rotate simultaneously.

Through hole 332 is formed in the center of division 314, in order to integrated with stator supporter 270, can also be used as Bolt connection is used.

End section formation and 52 the first opposite flange part 318 of the first magnet in the first teeth portion 312, in the second teeth portion 310 end section is formed and 42 the second opposite flange part 316 of the second magnet.

First flange part 318 and the second flange part 316 with respectively with the first magnet 52 of outer rotor 50 and internal rotor 40 The corresponding mode of second magnet 42 is formed interior to curved surface and export-oriented curved surface by regulation curvature.Therefore, the inner peripheral surface of stator core 62 And the out of roundness increase of outer peripheral face, therefore, between the inner peripheral surface and outer peripheral face of stator 60 and the first magnet 52 and the second magnet 42 It is close, and can maintain to fix magnetic gap (gap).

The structure being connected directly to each other in a manner of it can form magnetic circuit should be formed between stator core 62.Therefore, joint portion 320th, 322 it is formed such that the structure being connected directly to each other between adjacent stator core 62.

As one of this joint portion 320,322, protrude to be formed with reference to projection 322 in the side of division 314, drawing The opposite side of branch 314 forms the engagement groove 320 with buckling into combination with reference to projection 322, is assembled in if will be buckled into reference to projection 322 Engagement groove 320, then multiple arrangements of Splittable stator core 62 circularize, and with the structure being connected directly to each other.

Moreover, in addition to this structure, joint portion can also use following structure and method, in the division both sides of stator core End section forms pin-and-hole, in the state of being contacted with each other between making stator core, make pin member and two stator cores pin-and-hole it Between buckle into reference to making to interconnect between core, can in the state of being contacted with each other between making stator core, using ca(u)lk part come Carry out ca(u)lk.

The drive motor 140 of the present invention as described above can in internal rotor 40 with the stator 60 of winding first coil 66 one The first magnetic circuit L1 is formed between side (that is, inner stator), in the opposite side of outer rotor 50 and the stator 60 of the second coil 68 of winding The second magnetic circuit L2 is formed between (that is, external stator), to form mutual independent a pair of magnetic circuits respectively, therefore, can independently be driven Dynamic internal rotor 40 and outer rotor 50.

Specifically, the first magnetic circuit L1 is by the first magnet 42 of N poles, the first teeth portion 310 for winding first coil 66, division The inboard portion in portion 314, the first magnet 42 of the S pole adjacent with the first magnet 42 of N poles and the first back yoke 44.

Moreover, second magnet 52 of the second magnetic circuit L2 by N poles, 52 opposite and the second line of winding of the second magnet with N poles The second teeth portion 312, the Outboard Sections of division 314, the second magnet 52 of S poles and the second back yoke 54 of circle 68.

But above-mentioned first magnetic circuit L1 and the second magnetic circuit L2 can be according to by making U, V, W phase of each tooth different Come be wound 1 spiral coil method, make the different 2 spiral coil sides to be wound of U, V, W phase of each two tooth Method and make U, V, W phase of every three teeth are different to change winding the 3 spiral coil methods that are wound and type of drive In the coil 68 of first coil 66 and second of the first teeth portion 310 and the second teeth portion 312.

The drive motor 140 of above-mentioned first embodiment, which is formed, to be made the output of internal rotor 40 be transmitted to input interior axle 30 and makes outer The structure that the output of rotor (Outor Rotor) 50 is transmitted to input outer shaft 20.

Generally, in automatic washing machine, the impeller 130 small with the contact area of washings and washings compared with driving, The driving sink 120 big with the contact area of washings and washings needs bigger high torque to drive.

Also, compared with the internal rotor (Inner Rotor) 50 of minor diameter, high torque is produced in the outer rotor 50 of major diameter Output.

Therefore, if using first embodiment drive motor 140, for driving outer turn from major diameter of sink 120 Son 50 caused by high torque output by input outer shaft 20 and epicyclic gearing 70 ring gear 72 and output outer shaft 22 come Transmitted to sink 120, low torque output caused by the internal rotor 40 from minor diameter is filled by inputting interior axle 30 and planetary gear The central gear 74, planetary gear 78 and planet carrier 76 for putting 70 change moment of torsion, so as to which the output of high torque is by exporting interior axle 32 Transmitted to impeller 130, it is necessary to which the driving of the sink 120 of relative high torque driving becomes smooth.Therefore, in the present invention, when During in washing and rinsing stroke, can be formed and meanwhile be applicable impeller 130 and a variety of washings of sink 120 and rinsing current.

It is more to prepare using multiple segmentation core pattern stator cores 62 in stator 60 in the embodiment explanation shown in Fig. 5 to Fig. 7 After individual stator core assembly 61, by making multiple stator core assemblies 61 be combined with stator supporter 270, external stator is formed With the number of teeth identical structure of inner stator, still, the invention is not limited in this, the present invention can carry out numerous variations.

For example, in the present invention, as stator core, using integrated stator core or partial segmentation core, to improve driving Set out in terms of the efficiency of motor and washing machine, external stator can be made different with the number of teeth of inner stator.

Preferably, in high speed, low torque rotary course, the number of teeth of stator core should be lacked, from the aspect of the efficiency of motor, In low speed, high torque rotary course, the number of teeth of stator core should be more.

For example, first embodiment as shown in Figures 1 to 4, in the mode for washing and rinsing stroke to planet tooth The central gear 74 of wheel apparatus 70 input inner stator drive internal rotor 40 output and for dehydrating stroke by way of In the case of the output for the outer rotor 50 that the input of ring gear 72 to epicyclic gearing 70 is driven by external stator, inner stator Tooth select more toothings, the number of teeth of external stator selects toothing as few as possible.

Typically it will be preferred in bimorph transducer, the diameter of inner stator is relatively shorter than the diameter of external stator, therefore, inner stator The number of teeth is less than the number of teeth of external stator.

But in order to which coil is wound in into core, opening (opening) width as the tooth at the interval between tooth and tooth needs Maintain the interval (generally in more than 2.5mm) of bottom line, if the number of teeth is more relative to the diameter of default core, the opening of tooth Width needs the interval of small subthreshold, and this is likely to result in winding bad.

Also, if the number of teeth is more relative to the diameter of default core, cause opposite simultaneously with the magnet of internal rotor and outer rotor The area for producing bottom (shoe) part of the stator core of flux exhaustion diminishes, i.e. the first flange 316 and the second flange part 318 Area diminish, this will cause repeatedly to produce magnetic leakage, most cause efficiency to reduce at last.

Therefore, generally, the number of teeth of inner stator is less than the number of teeth of external stator, still, first embodiment above or Figure 11 institutes The second embodiment shown, in order to finally give the output with low speed, high torque revolving property using the output of internal rotor 40, The number of teeth of inner stator is set to maximum as far as possible, in order to which there is high speed, low torque to finally give using the output of outer rotor 50 The output of revolving property, the number of teeth of external stator is set to minimum as far as possible, this is preferred in terms of the efficiency of motor.

On the other hand, 3rd embodiment as shown in figure 12, in order to have using the output of outer rotor 50 to finally give The output of low speed, high torque revolving property, the number of teeth of external stator is set to maximum as far as possible, in order to utilize the output of internal rotor 40 To finally give the output with high speed, low torque revolving property, the number of teeth of inner stator is set to minimum as far as possible, this is in motor Efficiency in terms of preferably.

In order to meet above-mentioned condition, it is necessary to so that be driven to the outer rotor for applying the revolving force needed for driving impeller The number of teeth of dynamic external stator is more than the inner stator to being driven for applying the internal rotor of the revolving force needed for driving sink The number of teeth.

Hereinafter, the drive unit of washing machine 150b for the 3rd embodiment being applicable in Figure 12 described later driving horse is illustrated Reach.

The drive motor 140b of the present invention one shown in Fig. 8 a passes through pair different with the number of teeth of inner stator to external stator Stator and birotor, which are combined, to be formed.

The stator core 600 of above-mentioned bimorph transducer includes：Annular back yoke 610, as magnetic circuit path be commonly used in external stator and Inner stator；Multiple external stator teeth portion 620 of T shape, along the outside of above-mentioned back yoke 610 with radial formation；And T shape Multiple inner stator teeth portion 630, along the inner side of above-mentioned back yoke 610 with radial formation.

The multiple inner stator teeth portion 630 and multiple external stator teeth portion 620 of said stator core 600 are respectively by 18 teeth and 27 tooth structures Into external stator is different with the number of teeth of inner stator, and the number of teeth of the external stator required in the 3rd embodiment shown in Figure 12 is more than The number of teeth of inner stator.

The inner stator formed in the drive motor 140b shown in Fig. 8 a in the interior convolute coil of stator teeth 630 and interior turn Son 40 forms the inner motor of the convex portion structure of 18 tooth -16, in the external stator and outer rotor 50 that the outer convolute coil of stator teeth 620 forms Form the outer motor of the convex portion structure of 27 tooth -24.

On the other hand, for the ease of convolute coil and the minimization of loss of core material is made, said stator core 600 can be by multiple Partial segmentation type segmentation core 601 is formed.Stator core 600 shown in Fig. 8 a is formed in the following way, i.e. to as mother metal After electronics steel plate is punched out, as shown in Figure 8 b, 3 partial segmentation types are manufactured into split being laminated with specific thickness After splitting core 601, annular is assembled them into.

Determined for example, partial segmentation type splits core 601 with radial extend from back yoke 610 outside 9 inner stator teeth portion 630,6 Sub- teeth portion 620 forms.Also, partial segmentation type segmentation core 601 both ends formed joint portion 612,614, so as to it is adjacent The back yoke 610 of segmentation core be combined with each other.That is, formed in side joint portion 612 and combine projection, in the shape of opposite side joint portion 614 Into the engagement groove housed with reference to projection, as long as carrying out physical bond, then applicable any integrated structure.

In the case, it is an angle in 120 degree or 60 degree, 90 degree shown in Fig. 8 b to split the arc angle that core is formed Degree.Each segmentation core has the tooth for the multiple that quantity is 3, and the quantity of tooth can at least be set as 6 times according to coil winding method Number.In the drive motor 140b of the present invention, the tooth of stator is in the scope of 18 teeth to 36 teeth.

In above-mentioned drive motor 140b, external stator is different with the number of teeth of inner stator, and stator core 600 is in justify with regulation The structure that the mode of arc angle separates, still, stator core of the invention can be by being separated to separate on the basis of the back yoke of annular It is manufactured into external stator core and inner stator core assembles afterwards.

Reference picture 9a to Fig. 9 c, the present invention drive motor 140c of another is in following structure, i.e. in external stator and default In the different bimorph transducer of the sub number of teeth, external stator core 621 and the combination knot of inner stator core 631 can be divided into by forming stator core 600a Structure.

I.e., as illustrated in fig. 9, it is laminated, thus manufactures multiple default after being punched out to sheet type electronics steel plate Sub- teeth portion 630 as shown in figure 9b, is rushed from the inner stator core 631 of the back yoke 610a extensions of annular to sheet type electronics steel plate It is laminated after hole, thus manufactures multiple external stator teeth portion 620 from the external stator core 621 of the back yoke 610b extensions of annular.

In the case, in above-mentioned inner stator core 631, multiple combination projections 616 across interval from back yoke 610a laterally Extension, in above-mentioned external stator core 621, the inner circumferential with multiple engagement grooves 618 that multiple combination projections 616 are combined from back yoke 610b Portion is formed across interval to back yoke 610b inner side.

Afterwards, as is shown in fig. 9 c, if outwards the engagement groove 618 of stator core 621 inserts the combination projection of inner stator core 631 616 are assembled, then form bimorph transducer stator core 600a.Preferably, the back yoke 610a of above-mentioned inner stator core 631 and outer fixed The back yoke 610b of sub- core 621 overall width is identical with inner stator teeth portion 630 or external stator teeth portion 620.

The drive motor 140c of another of the invention shown in Fig. 9 c is identical with Fig. 8 a drive motor 140b, default The inner stator and internal rotor 40 that the sub- convolute coil of teeth portion 630 forms form the inner motor of the convex portion structure of 18 tooth -16, in outer stator tooth The external stator and outer rotor 50 that the convolute coil of portion 620 forms form the outer motor of the convex portion structure of 27 tooth -24.

Preferably, first embodiment above or the second embodiment described later shown in Figure 11, in order to utilize internal rotor 40 Output and finally give the output with low speed, high torque revolving property by epicyclic gearing 70, as far as possible will be default The number of teeth of son is set to maximum.

But although in order to obtain having low speed, high torque revolving property output and internal rotor 40 will be driven as far as possible The number of teeth of inner stator, which is set to, to be up to preferably, however, it is difficult to which the core for being less than external stator in diameter uses more toothings.

Figure 10 a to Figure 10 d are shown respectively in the drive motor of the present invention can be by making external stator core and inner stator core Thin slice stacking number is differed to supplement the various embodiments structure of the driving torque of deficiency.

The drive motor of the present invention is arranged at intervals between internal rotor 40 and outer rotor 50 forms the stator of bimorph transducer Core 605a~605d.

In the case, stator core 605a~605c is respectively arranged at outside and inner side, by sheet type electronics steel Multiple thin slices of stacking punching are combined and formed come the external stator core 631 and inner stator core 621 formed after plate is punched out.

Stator core 605a shown in Figure 10 a is in following structure, i.e. when by the inner stator with inner stator core 621 and interior turn During the driving torque deficiency for the inner motor that son 40 is formed, instead of the thin slice that stator core is improved for external stator core and inner stator core The method of stacking number, by making the thin slice stacking number of inner stator core 621 be more than external stator core 631 to supplement the moment of torsion of deficiency.

In this case it is preferably to the magnet 42 of the internal rotor 40 opposite with inner stator core 621 and the height of back yoke 44 Increased simultaneously in a manner of proportional to the stack height of inner stator core 621.

I.e., as shown in Figure 10 a, inner stator core 621 thin slice stacking number be more than normal external stator core 631 situation Under, magnet can increase, the area of the inner stator core 621 opposite with the magnet 42 of internal rotor 40 (that is, by with magnet mutually always shape Into the base section of the stator core of flux exhaustion) increase, is reduced so as to reduce leakage flux.Finally, the thin slice of inner stator core 621 The increased present invention of stacking number is compared with the not increased ordinary circumstance of thin slice stacking number, with the increasing of the rotation torque of internal rotor 40 Add, the moment of torsion of deficiency can be supplemented by internal diameter rotor set in advance.

Stator core 605b shown in Figure 10 b is in following structure, i.e. when by the external stator with external stator core 631 and outer turn During the driving torque deficiency for the outer motor that son 50 is formed, instead of the thin slice that stator core is improved for external stator core and inner stator core The method of stacking number, by making the thin slice stacking number of external stator core 631 be more than inner stator core 621 to supplement the moment of torsion of deficiency.

In this case it is preferably to the magnet 52 of the outer rotor 50 opposite with external stator core 631 and the height of back yoke 54 Increased simultaneously in a manner of proportional to the stack height of external stator core 631.

As shown in fig. lob, in the case where the thin slice stacking number of outer stator core 631 is more than normal inner stator core 621, magnetic Property can increase, with the magnet 52 of outer rotor 50 opposite external stator core 631 area (that is, by with magnet mutually always form magnetic The base section of the stator core of beam exhaustion) increase, so as to reduce leakage flux.Finally, the thin slice stacking number of external stator core 631 increases The present invention added is compared with the not increased ordinary circumstance of thin slice stacking number, can be by with the increase of the rotation torque of outer rotor 50 The moment of torsion of internal diameter rotor supplement deficiency set in advance.

It is in by making external stator when comparing the stator core 605b shown in the stator core 605c shown in Figure 10 c and Figure 10 b The thin slice stacking number of core 631 is more than inner stator core 621 to supplement the structure of the moment of torsion of deficiency.Difference is as follows, i.e. is realizing not In the method for sufficient moment of torsion supplement, the thin slice of additional stacking does not increase symmetrically along direction of principal axis, but in the side layer of direction of principal axis Folded thin slice.

When compare the side laminated sheet of direction of principal axis situation and along direction of principal axis both sides symmetrically add laminated sheet Situation when, the increased torque value of institute does not have difference.

When increasing the rotation torque of internal rotor 40 by increasing the thin slice stacking number of inner stator core 621 in the same way When, as shown in Figure 10 a, the thin slice of additional stacking does not increase symmetrically along direction of principal axis, but in the side laminated thin of direction of principal axis Piece, this can also equally realize moment of torsion increase.

When comparing the stator core 605c shown in stator core 605d and Figure 10 c shown in Figure 10 d, in order to increase outer rotor 50 rotation torque and formed in the side of direction of principal axis for add laminated sheet thin slice be laminated.

Difference is as follows, i.e. in the method for the moment of torsion of supplement deficiency, stator core 605c by manufacturing inner stator respectively The method being combined after core 621 and external stator core 631 is formed, but stator core 605d then uses following structure, i.e. by interior Thin slice stacking number needed for stator core 621 by inner stator core and external stator core be prepared to it is one-piece type after, layer is added to external stator Folded thin slice.

That is, stator core 605d includes：Integral core part 607, inner stator core and external stator core are formed and are integrated；It is and additional Core 608 is laminated, the external stator of above-mentioned integral core part 607 is carried out adding stacking.

Above-mentioned additional stacking core 608 can strengthen internal rotor 40 or the outer rotor 50 of moment of torsion to be as needed laminated in one The inner or outer side of core part 607, so as to supplement the moment of torsion of deficiency.

Figure 11 is the direction of principal axis sectional view of the drive unit of washing machine of second embodiment of the invention.

The drive unit of washing machine 150a of second embodiment includes：The drive motor 140 of birotor bimorph transducer mode, installation In the bottom of water jacket 110, in a manner of driving impeller 130 and sink 120 from internal rotor 40 and outer rotor 50 produce at a high speed, it is low Moment of torsion it is double dynamical；As the epicyclic gearing 70 of torque conversion device, to receive by turning in above-mentioned drive motor 150 The first input and the second input of high speed, low torque that son 40 and outer rotor 50 provide meet washing stroke and rinsing row to provide The low speed that is needed in journey, high torque characteristic the first output and meet the high speed of needs in dehydrating stroke, the of low torque characteristic The mode of two outputs is optionally slowed down (torque conversion).

The drive unit of washing machine 150a of second embodiment is in the drive motor 140 including birotor bimorph transducer mode and row The aspect of star gear device 70 is identical with the drive unit of washing machine 150 of first embodiment.

Difference between second embodiment and first embodiment is as follows, i.e. determining for stator 60 is supported in drive motor 140 Sub- supporter is in the first embodiment in the arrangement of multiple stator core assemblies 61 circularizes, peripheral part is fixed on water jacket 110, inside Portion forms the structure of through hole, still, in a second embodiment, instead of through hole, internally forms supporter.

In a second embodiment, stator supporter 200 includes：Outer stator supporter 210, it is configured at stator core assembly 61 outside；And inside stator supporter 221, it is configured at the inner side of stator core assembly 61.

Outer stator supporter 210 includes：Outboard wick fixed part 212, formed and be integrated by embedding and injection molding, it is and multiple fixed The lateral surface of sub- core assembly 61 is connected；The first connecting portion part 214, outboard wick fixed part 212 formed 2 at bend, with The mode that inner side surrounds outer rotor 50 extends；And water jacket fixed part 216, after the right-angle bending of the first connecting portion part 214, to Radiation direction extends, so as to be fixed on water jacket 110 by bolt 280.

Also, inside stator supporter 211 includes：Interior side core fixed part 213, formed and be integrated by embedding and injection molding, with The medial surface of multiple stator core assemblies 61 is connected；Second connecting portion part 215, formed in interior side core fixed part 213 curved at 2 Song, extended in a manner of surrounding internal rotor 40 in inner side；And axle bearing mount portion 217, in the right-angle bending of second connecting portion part 215 Afterwards, extend to center position, so as to install clutch shaft bearing 26.

Above-mentioned clutch shaft bearing 26 is arranged at the axle bearing mount portion 217 of inside stator supporter 211, rotatably right Input outer shaft 20 is supported, and can improve the assembleability of drive motor 140 and epicyclic gearing 70, it is not necessary to for installing the The extra bearing outer cover of one bearing 26, so as to reduce number of components and structure can be simplified.

Especially, the inside stator supporter 211 with clutch shaft bearing 26 is configured between internal rotor 40 and outer rotor 50, from And epicyclic gearing 70 is rotatably supported, in washing and rinsing stroke, even in internal rotor 40 and outer rotor In the case that 50 rotate round about, can also stably it be supported.Therefore, the He of drive motor 140 is supported by stable Epicyclic gearing 70 reduces noise factor.

Outer stator supporter 210 for applying first from control unit to the coil 68 of first coil 66 and second with driving The formation (not shown) of the connector of signal and the second drive signal is integrated.

In the first embodiment, the medial end of outer rotor supporter 56 is combined with input outer shaft 20, so as to annular Gear 72 transmits the output of outer rotor 50, but in a second embodiment, the medial end of outer rotor supporter 56 is defeated in surrounding Enter outer shaft 20 and ring gear 72 and the cylinder integrated structure combined, can be come and cylinder with the broad contact area of inner peripheral portion Bottom is combined, so as to play the medial end for preventing from causing outer rotor supporter 56 because of clutch shaft bearing 26 from input outer shaft 20 The stop section effect for departing to be fixed.Therefore, the connection of the first fixing nut 34 such as first embodiment can be omitted.

In above-mentioned second embodiment, the outer rotor supporter 56 of outer rotor 50 is combined with ring gear 72, outer rotor 50 output (that is, revolving force) will be transmitted directly, therefore, turn into the highly preferred structure in terms of power transmission efficiency.

Also, in a second embodiment, in the inside face of interior rotor supporting body 46, for make internal rotor supporter 46 with The metal connecting plate 48 that input interior axle 30 is connected is formed by embedding and injection molding to be integrated.

Especially, in a second embodiment, formed in stator supporter 200 for being protected to the internal rotor 40 of rotation Protector 218.Preferably, protector 218 with without using in by internal rotor 40 be fixed on input interior axle 30 the second fixing nut 36 reveal The mode gone out extends to be formed in outboard wick fixed part 212 along direction of principal axis.

Such as the drive unit of washing machine 150a of second embodiment, if having protector 218, rotor and adjacent its can be prevented Interference between his part, thus, miscellaneous part can be set close to the position of drive motor, used so as to improve space Degree.

In the drive unit of washing machine 150 of above-mentioned first embodiment and second embodiment, 150a, drive motor 140 The output of internal rotor 40 is applied by inputting interior axle 30 to the central gear 74 of epicyclic gearing 70, and the output of outer rotor 50 is led to Input outer shaft 30 is crossed to the ring gear 72 of epicyclic gearing 70 to apply or directly to the annular tooth of epicyclic gearing 70 Wheel 72 applies, but the invention is not limited in this, changes into the 3rd embodiment shown in Figure 12.

Figure 12 is the direction of principal axis sectional view of the drive unit of washing machine of third embodiment of the invention.

Reference picture 12, the drive unit of washing machine 150b of 3rd embodiment include：The driving horse of birotor bimorph transducer mode Up to 140b, for producing the first rotary power and the second rotary power；And epicyclic gearing 70, receive above-mentioned first rotation Power and the second rotary power produce the washing stroke of washing machine and the first output and the second output needed for dehydrating stroke.

With first embodiment and second embodiment on the contrary, the drive motor 140b of 3rd embodiment forms following structure, i.e. Applied making the output (the first rotary power) of outer rotor 50 by inputting interior axle 30 to the central gear 74 of epicyclic gearing 70 In addition after, by planetary gear 78 and it is decelerated, is thus exported with first to be transmitted by exporting interior axle 32 to impeller 130, it is interior The output (the second rotary power) of rotor 40 is by inputting ring gear 72 application of the outer shaft 20 to epicyclic gearing 70 After will not be decelerated, thus transmitted with the second output to sink 120 by exporting outer shaft 22.

The drive motor 140b of 3rd embodiment is similar with second embodiment, for supporting the stator supporter of stator 60 200 are made up of outer stator supporter and inside stator supporter, and first is set in the axle bearing mount portion of inside stator supporter Bearing, so as to support input interior axle 30 and epicyclic gearing 70 in a manner of it can rotate.

In the drive unit of washing machine 150b of 3rd embodiment, for first embodiment and second embodiment identical Part assigns identical reference, and detailed description will be omitted.

In the drive unit of washing machine 150b of 3rd embodiment, sink 120 and internal rotor 40 are filled by planetary gear Put 70 ring gear 72 to be connected, the central gear 74 and planet that impeller 130 and outer rotor 50 pass through epicyclic gearing 70 Gear 78 is connected.

In the drive unit of washing machine 150 of first embodiment and second embodiment, 150a, the revolving force of internal rotor 40 to Impeller 130 transmits, and the revolving force of outer rotor 50 transmits to sink 120, still, in the drive unit of washing machine of 3rd embodiment In 150b, the revolving force of outer rotor 50 transmits to impeller 130, and the revolving force of internal rotor 40 transmits to sink 120.

The internal rotor supporter 46 and outer rotor supporter 56 of first embodiment and second embodiment, which have to be formed at 2, to be bent Structure, the internal rotor supporter 46a and outer rotor supporter 56a of 3rd embodiment rounded plate shape.

As described above, in order to finally give the output with low speed, high torque revolving property using outer rotor 50, as far as possible The number of teeth of external stator is set to maximum, in order to using internal rotor 40 come finally give have at a high speed, low torque revolving property Output, is set to minimum by the number of teeth of inner stator as far as possible, and this is preferred in terms of the efficiency of motor.

It is applicable so as to applying in order to meet above-mentioned condition in the drive unit of washing machine 150b of 3rd embodiment The number of teeth for the external stator that outer rotor 50 for the revolving force of impeller driving is driven is more than is used for sink driving to applying Revolving force drive motor 140b, 140c of the number of teeth of inner stator that is driven of internal rotor 40.

Structure shown in the above-mentioned applicable Fig. 8 a to Fig. 9 c of drive motor 140b, 140c, therefore, it will omit to the detailed of its Explanation.

Also, in the drive unit of washing machine 150,150a, 150b in first embodiment to 3rd embodiment, when selected The driving torque of one in additional increase outer rotor 50 and internal rotor 40 is needed in the drive motor 140 selected, 140b, 140c When, it can be turned round by a structure being applicable in stator core 605a~605d shown in Figure 10 a to Figure 10 d to supplement the driving of deficiency Square.

Hereinafter, reference picture 13 and Figure 14, the control method of the washing machine of the present invention is illustrated.

Figure 13 is the block circuit diagram of the controller of washer of the present invention, and Figure 14 is that the washing machine for showing the present invention is integrally controlled The flow chart of method processed.

Reference picture 13, controller of washer of the invention include：First driver 530, for producing into being wound in The first drive signal that the first coil 66 of stator core 621 applies；Second driver 540, for producing to being wound in external stator The second drive signal that second coil 68 of core 631 applies；And control unit 500, for above-mentioned first driver 530, Second driver 540 and washing machine are integrally controlled.

As described above, above-mentioned control unit 500 is to be controlled to the first driver 530 and the second driver 540 The overall mode of washing machine is controlled to play a part of systems control division simultaneously, or, above-mentioned control unit 500 can be by from washing After the washing control signal that the washing procedure that the systems control division reception of clothing machine body is set according to user of service determines accordingly The driver dedicated control device for applying single control signal to the first driver 530 and the second driver 540 is formed.It is above-mentioned Control unit 500 can be made up of the signal processing apparatus of microcomputer or microprocessor etc., in order to produce pulse width modulation controlled letter Number and built-in pulse width modulation controlled portion or individually there is pulse width modulation controlled portion.

As described above, the drive motor 140 of the present invention is the brushless straight of the double dynamical structure that is made up of birotor bimorph transducer Motor is flowed, for example, controlling motor by U, V, W3 phase type of drive.Therefore, the coil 68 of first coil 66 and second of stator 60 It is made up of respectively U, V, W3 phase coil.

The stator 60 of the present invention is bimorph transducer, and above-mentioned bimorph transducer includes：External stator, to drive outer rotor 50 and interior turn respectively The mode of son 40 has first coil 66；And inner stator, there is the second coil 68.

Finally, inner motor is formed by inner stator and the internal rotor rotated by external stator 40, by external stator and passed through The outer rotor 50 that external stator is rotated forms outer motor, and above-mentioned outer motor and inner motor respectively follow the design of motor configuration It is controlled in a manner of Brushless DC motor, for example, realizing the drive of 6 step modes to the first driver 530 and the second driver 540 Dynamic control.

The above-mentioned driver 540 of first driver 530 and second is made up of inverter respectively, and above-mentioned inverter is by with totem bar 3 pairs of switching transistors of structure connection are formed, and U, V, W3 phase of each inverter are exported to the coil 68 of first coil 66 and second U, V, W3 phase apply.

For example, control unit 500 is respectively with from the first rotor position sensing formed by hole sensor (Hall sensor) Come based on the outer rotor 50 of the rotor-position sensor 520 of device 510 and second detection and the rotation position of internal rotor 40 to first The driver 540 of driver 530 and second applies the control signal of pulsewidth modulation (PWM) mode, and the first driver 530 and second drives Dynamic device 540 receives control signal and exported to apply U, V, W3 phase to U, V, W3 phase coil of the coil 68 of first coil 66 and second, Outer rotor 50 and the rotation driving of internal rotor 40 are made with this.

Control unit 500 has the program for performing various washing procedures in storage device, and all washing procedures are basic It is upper to include washing stroke, rinsing stroke, dehydrating stroke, also, include water supply stroke and draining stroke before and after each stroke, According to washing procedure, repeatedly perform repeatedly at least one in washing stroke, rinsing stroke, dehydrating stroke.

Reference picture 14, illustrate the effect of washing machine of the invention formed in the manner.

Reference picture 14, washing machine of the invention first connect the power supply of washing machine in step s 200.

In the state of as described above, control unit 500 controls letter by the washing inputted according to the selection of user of service Number come judge currently whether to perform washing or rinsing stroke (step S202).

If the above-mentioned result judged is will perform washing or rinsing stroke, above-mentioned control unit 500 is according to washing or drift Stroke is washed to drive the inverter (step S204) of the first driver 530 and the second driver 540.

Therefore, the above-mentioned driver 540 of first driver 530 and second produces three-phase ac power, and caused three is intersecting Stream electric power applies to the coil 68 of first coil 66 and second of stator 60, due to optionally, independently producing and applying, therefore Driven by a method in a variety of washing procedures to be washed.

Hereinafter, washing to the drive motor 140 using birotor bimorph transducer mode and epicyclic gearing 70 is described in detail Wash method.

Afterwards, above-mentioned control unit 500 judges currently whether perform dehydrating stroke in the state of all rotors are stopped, Or if being judged as being not in washing stroke or rinsing stroke in above-mentioned steps S202, determine whether to perform dehydration Stroke (step S208).

If the above-mentioned result judged is needs to perform dehydrating stroke, above-mentioned control unit 500 is only to drive outer rotor 50 Or outer rotor 50 and internal rotor 40 is set to control the first driver 530 and second to drive in a manner of equidirectional/same rotational speed rotation Dynamic device 540 applies identical drive signal to the coil 68 of first coil 66 and second, from there through epicyclic gearing 70 Sink 120 is set to be rotated to a direction, so as to perform dehydrating stroke (step S212).

Moreover, above-mentioned control unit 500 judges whether the execution time of dehydrating stroke has crossed (step S214), gone in dehydration In the case of the time-out of journey, terminate the washing action of washings.

Washing or the rinsing stroke for describing the invention described above in detail are as follows.

In the case where performing washing or rinsing stroke, above-mentioned control unit 500 drives according to washing or rinsing stroke The inverter of first driver 530 and the second driver 540.

Therefore, the above-mentioned driver 540 of first driver 530 and second produces three-phase ac power, and caused three is intersecting Stream electric power optionally, independently applies to the coil 68 of first coil 66 and second of stator 60.Thus, the of stator 60 is passed through The output of one coil 66 and the internal rotor 40 and outer rotor 50 of the driving of the second coil 68 is provided with high speed, low torque characteristic respectively Revolving force.

First, when performing washing or rinsing stroke, if applying from the first driver 530 to the first coil 66 of inner stator Three-phase ac power, then internal rotor 40 rotated, the output of the high speed, low torque characteristic of internal rotor 40 to the phase of internal rotor 40 The input interior axle 30 of connection is transmitted.That is, the output of internal rotor 40 with the first of the first rotating speed the input come by input interior axle 30 to The central gear 74 of epicyclic gearing 70 applies.

In the case, if fixing outer rotor 50 by electronic brake, the input outer shaft 20 being connected with this is consolidated It is fixed, and the ring gear 72 being connected with this can also be fixed.Thus, if by inputting first from internal rotor 40 to central gear 74 The first of rotating speed inputs (i.e., the at a high speed, input of low torque characteristic) rotated central gear 74, then multiple planetary gears 78 progress rotations simultaneously carry out the revolution of the inner peripheral portion based on ring gear 72, are connected with the rotary shaft 78a of planetary gear 78 Planet carrier 76 is also rotated to the direction of rotation identical direction with internal rotor 40.In the case, the rotating speed of planet carrier 76 According to central gear and ring gear the number of teeth setting gear ratio slow down, so as to, from planet carrier 76 produce with low speed, First output of the second rotating speed of high torque characteristic.

Exported as the planet carrier 76 of epicyclic gearing 70 transmits first to output interior axle 32, the reception of impeller 130 low speed, High torque exports, to be washed with high efficiency or rinsing stroke.

As the first input of above-mentioned first rotating speed is decelerated the first output for the second rotating speed, moment of torsion can increase, so as to Low speed, high torque characteristic required for meeting in washing stroke and rinsing stroke.

When the above-mentioned ring gear 72 of fixation, the gear ratio obtained from the planet carrier 78 of epicyclic gearing 70 (that is, is slowed down Than) such as following mathematical expression 1.

Mathematical expression 1：

Wherein, zr is the number of teeth of ring gear, the number of teeth of gear centered on zs.

For example, the method for applying deceleration of electrons by the outer rotor 50 of the second driver 540 and ring gear 72 can be used Following method, i.e. disconnect three-phase ac power that the second coil 68 from from the second driver 540 to stator 60 applies or make the Two coil 68 produces short circuit come so that the method that the ring gear 72 being connected with outer rotor 50 stops.

On the other hand, in the present invention, can be by controlling ring gear 72 to control when performing washing or rinsing stroke The change rate (preferably, amount of deceleration) of first output of the epicyclic gearing 70 exported by planet carrier 76, to replace passing through The method for the ring gear 72 that deceleration of electrons fixation is connected with outer rotor 50.

That is, the output of outer rotor 50 inputs the ring gear 72 to epicyclic gearing 70 by inputting outer shaft 20 with second Apply.The first deceleration exported for controlling epicyclic gearing 70 can be used as to the second input that ring gear 72 applies The control input of amount.

In the case, for example, being formed in the direction of rotation of the second input opposite with the direction of rotation of the first input In the case that second rotating speed of direction and the second input is the 1/2 of the first rotating speed of the first input, exported by planet carrier 76 The direction of rotation of first output of epicyclic gearing 70 forms the direction opposite with the first input, and obtains being decelerated as 1/5 Rotating speed output.For example, in the epicyclic gearing of central gear input/planet carrier export structure, it is assumed that planet carrier is defeated The gear ratio (that is, speed reducing ratio) gone out is set to 5:1, then when the first input be 250 revolutions per minute, second to input be 125 turns of (-) Per timesharing, planet carrier output is (-) 50 revolutions per minute.

Also, formed in the direction of rotation of the second input and the direction of rotation identical direction of the first input and the second input The second rotating speed be less than first input the first rotating speed in the case of, first output with identical with the first input in a rotational direction Mode obtain rotating speed according to than second input the second rotating speed be 0 in the case of speed reducing ratio (5:1) smaller speed reducing ratio subtracts The output of speed.For example, when the first input is 800 revolutions per minute, the second input is 200 revolutions per minute, planet carrier output is every for 320 turns Point.

As described above, in the present invention, in order to wash or rinsing stroke, when the revolving force of internal rotor 40 is utilized as into power Source come the second rotating speed for being slowed down from epicyclic gearing 70 the first output when, outer rotor can be controlled by electronic brake 50 forward rotational speed controls the rotating speed of the first output and moment of torsion by making the method that outer rotor 50 is reversed or rotated forward.

In the present invention, in the epicyclic gearing 70 of central gear input/planet carrier export structure, if planet carrier 76 The gear ratio (that is, speed reducing ratio) of output is 5:1, then be in the rotating speed of the first input inputted from internal rotor 40 to central gear 74 In the case of 1000 revolutions per minute, when ring gear 72 is in halted state, the rotating speed of the first output of epicyclic gearing 70 For 200 revolutions per minute, if applying the revolving force of 10 revolutions per minute of forward direction to ring gear 72, the first of epicyclic gearing 70 is defeated The rotating speed gone out is about 208 revolutions per minute, if applying the revolving force of (-) 10 revolutions per minute of reverse direction, planet tooth to ring gear 72 The rotating speed of first output of wheel apparatus 70 is about 190 revolutions per minute.

As described above, for example, in the case where ring gear 72 not being fixed ring gear 72 can be made every with 10 turns Point or so rotating speed form the rotation of minimum, or so that annular tooth to the direction of rotation identical direction with central gear 74 Wheel 72 carries out the mode of the reverse of (-) 10 revolutions per minute or so to the direction opposite with the direction of rotation of central gear 74, i.e. with Ring gear 72 is set to carry out the mode of the reverse of (-) 10 revolutions per minute or so to the direction opposite with the direction of rotation of internal rotor 40 Outer rotor 50 is set to be driven to reverse direction, thus can be by increasing or decreasing the epicyclic gearing 70 exported by planet carrier 76 The rotating speed of first output imperceptibly controls amount of deceleration.

That is, when inputting the first input of the first rotating speed from internal rotor 40 to central gear 74, by intermittently releasing Electronic brake, carry out not fully stationary annular gear 72 so that ring gear 72 is to the direction of rotation phase with central gear 74 Same direction is rotated, then is more than by the rotating speed of the first output of the epicyclic gearing 70 of planet carrier 76 and is completely fixed ring The second rotating speed in the case of shape gear 72, in contrast, if making ring gear 72 to the direction of rotation phase with central gear 74 Anti- direction is reversed, then will be less than second turn by the rotating speed of the first output of the epicyclic gearing 70 of planet carrier 76 Speed.

In the present invention, when first turn inputted to perform washing or rinsing stroke by reduction to central gear 74 When first input of speed is to increase moment of torsion, it is preferable that the of the second input for apply to ring gear 72 as control input Two rotating speeds should be set to be less than the first rotating speed of the first input inputted to central gear 74.In the case, to annular tooth The direction for the second input that wheel 72 applies can be identical or opposite with the direction of the first input inputted to central gear 74.

In the case, to ring gear 72 apply second input direction of rotation with to central gear 74 input Second rotating speed of the second input that the direction of rotation of the first input conversely and to ring gear 72 applies is defeated to central gear 74 In the case of the 1/4 of first rotating speed of the first input entered, planet carrier output is 0 revolutions per minute, i.e. realizes maximum deceleration.

For example, when the first input be 800 revolutions per minute, the second input be (-) 200 revolutions per minute, planet carrier is exported as 0 turn Every point.

It is also, first defeated with being inputted to central gear 74 in the direction of rotation of the second input applied to ring gear 72 The direction of rotation entered is opposite and is less than what is inputted to central gear 74 to the second the second rotating speed inputted of the application of ring gear 72 In the case of the 1/4 of first rotating speed of the first input, the direction of rotation that planet carrier exports and first to the input of central gear 74 The direction of input is identical, the output that the output in the state of can obtaining than stationary annular gear 72 is more slowed down.

For example, when the first input be 600 revolutions per minute, the second input be (-) 87 revolutions per minute, planet carrier is exported as 50.4 Revolutions per minute.

Especially, it is first defeated with being inputted to central gear 74 in the direction of rotation of the second input applied to ring gear 72 The direction of rotation entered is opposite and make it that the second rotating speed of the second input to the application of ring gear 72 is defeated more than to central gear 74 First rotating speed of the first input entered 1/4 and less than in the case of 1/2, the direction of rotation of planet carrier output with to central gear 74 input first input direction of rotation on the contrary, the output in the state of can obtaining than stationary annular gear 72 more slow down it is defeated Go out.

For example, when first input be 1200 revolutions per minute, second input be (-) 400 revolutions per minute when, planet carrier export is (-) 80 revolutions per minute.

On the other hand, when performing dehydrating stroke, in epicyclic gearing 70, ring gear 72 receives high speed, low torsion Square idiocratically inputs, and produces the height for meeting needs in dehydrating stroke by planet carrier 78 in a manner of no deceleration (torque conversion) Second output of speed, low torque characteristic.

In the case, in order that epicyclic gearing 70 receive at a high speed, the input of low torque characteristic is come to slow down The mode of (torque conversion) is exported, and central gear 74 need to be set as into transitory state, i.e. rotatable state, Or to make central gear 74 be set in a manner of being rotated with the identical direction of ring gear 72 and identical rotating speed.

Thus, the second coil 68 from the second driver 540 to external stator applies drive signal, to make outer rotor 50 (i.e., Ring gear 72) rotated forward with high speed, 1000 revolutions per minute of low torque characteristic, and driving is not applied to first coil 66 Signal, rotate freely internal rotor 40, or make internal rotor 40 positive to be carried out with the revolutions per minute of 50 identical of outer rotor 1000 Rotation.

Finally, if only transmitting the revolving force of high speed, low torque characteristic to the ring gear 72 of epicyclic gearing 70, or To ring gear 72 and central gear 74 transmit identical at a high speed, the revolving force of the first input of low torque characteristic, then can revolve The mode turned is by the first sleeve bearing 80, second sleeve bearing 82,3rd sleeve bearing 84,4th sleeve bearing 86 and first axle Hold 26 and the ring gear 72 that supports of second bearing 28 or epicyclic gearing 70 it is overall in a manner of no deceleration with 1000 turns Every point is rotated.

Therefore, the revolving force of the high speed of ring gear 72, low torque characteristic is transmitted by exporting outer shaft 22 to sink 120 To perform dehydrating stroke, or pass through defeated according to the overall rotation of epicyclic gearing 70, high speed, the revolving force of low torque characteristic Go out outer shaft 22 and output interior axle 32 is transmitted to perform dehydrating stroke to sink 120 and impeller 130.

Finally, as the first input of the high speed of outer rotor 50 and internal rotor 40, low torque characteristic in planetary gear to fill The mode in 70 without deceleration (torque conversion) is put to transmit to perform dehydrating stroke, so as to height to sink 120 and impeller 130 Effect performs dehydrating stroke.

The effect for arranging the epicyclic gearing of the present invention is as follows.

First, the direction with the input applied to ring gear and the in opposite direction and ring gear of central gear input Rotating speed be more than central gear rotating speed, the direction of planet carrier output is identical with the direction that ring gear inputs, and is subordinated to annular tooth The rotating speed of wheel, the rotating speed than central gear rotating speed speedup is obtained in a manner of proportional to the rotating speed of ring gear, in annular tooth Wheel speed be less than central gear rotating speed in the case of, the direction of planet carrier rotating speed is identical with the direction that ring gear inputs, with The mode that the rotating speed of ring gear is proportional obtains the rotating speed to slow down than central gear rotating speed.

Also, with the direction of the input applied to ring gear with the direction that central gear inputs identical and ring gear Rotating speed be more than central gear rotating speed, the direction of planet carrier output is identical with the direction that ring gear inputs, and is subordinated to annular tooth The rotating speed of wheel, the rotating speed than central gear rotating speed speedup is obtained in a manner of proportional to the rotating speed of ring gear, in annular tooth In the case that wheel speed is more than central gear rotating speed, the direction of planet carrier rotating speed is identical with the direction that ring gear inputs, and greatly In ring gear rotating speed, by slowing down under central gear rotating speed to yield less than the rotating speed of central gear rotating speed.

On the other hand, in the present invention, epicyclic gearing 70 by can bidirectional rotation clutch shaft bearing 26 and second bearing 28 supports, therefore, it is possible to control the direction of rotation of impeller 130 and sink 120 and rotary speed in many ways, can be formed more Kind washing current.

In the present invention, because epicyclic gearing 70 is not in restrained state, therefore, to sink 120 Inside input ormal weight more than washings in the case of, impeller 130 can bearing load, the planet being connected with impeller 130 Frame 76 plays a part of brake apparatus.Therefore, when the revolving force of internal rotor 40 inputs to central gear 74, revolving force is to annular Gear 72 exports so that rotation of the sink 120 and outer rotor 50 being connected with ring gear 72 to direction and internal rotor 40 Reverse direction rotation in opposite direction, i.e. rotated to (CCW) direction counterclockwise.

But there is no washings inside sink 120 or in the case that washings reaches below setting value (in impeller 130 be not subject to load or load it is few in the case of), the ring gear 72 of epicyclic gearing 70 be in input outer shaft 20, In the state of output outer shaft 22 and sink 120 are connected, therefore, brake effect, thus, the revolving force of internal rotor 40 are played Input to central gear 74, exported to planet carrier 76.Therefore, the impeller 130 being connected with planet carrier 76 is with the speed after deceleration Rotated.

That is, there is no washings inside sink 120 or in the case that washings reaches below setting value, internal rotor 40 Revolving force transmitted to impeller 130 so that impeller 130 is rotated.

If as described above, only being rotated impeller 130, vertical ascent and the rotary water current of decline can be formed, mainly For common washing stroke.

In the washing process of automatic washing machine, when impeller 130 is rotated, only fixed sink 120 Or reverse can just form rising and descent waterflow, so as to make the efficiency of washing maximize.But in the present invention, planet tooth Wheel apparatus 70 without clutch etc. limiter, if sink 120 is arranged at the outer rotor 50 of drive motor, sink 120 The rotation of impeller 130 is complied with to be rotated.But formation is hindered rising and declined by the rotation of complying with of this sink 120 The vortex of current, therefore only washed in one side, thus reduce detersive efficiency.

In the explanation of above-described embodiment, illustrate to drive the washing machine of the first embodiment using drive motor 140 The washing methods that device 150 and the drive unit of washing machine 150a of second embodiment are utilized is illustrated, still, this hair The bright drive unit of washing machine that can be also applied in the same way to the 3rd embodiment using drive motor 140b, 140c The washing methods that 150b is utilized.

In the explanation to above-described embodiment, as the dual power source for producing a pair of output, double by radial gap type turn The Brushless DC motor of sub- double-stator structure is used as drive motor, but it is also possible to use axial-gap birotor bimorph transducer The Brushless DC motor of structure.As long as produce a pair of output power sources, then can be used other structures, other modes it is any Drive motor.Combination, brushless direct-current mode and the sensing of the applicable radial gap type of double dynamical drive motor and axial-gap Combination of mode etc..

Also, in the explanation to above-described embodiment, in order to one in caused a pair of power in drive motor Power carries out torque conversion (decelerations), and drive unit of washing machine is using inputting by central gear-planet carrier export structure The use of epicyclic gearing is come the speed change according to the amount of deceleration that planet carrier output is determined to the control input that ring gear applies System, but as long as can slow down to the input applied from drive motor, then it can use the epicyclic gearing of any structure.

As described above, in the drive unit of washing machine of the present invention, by making the driving horse from birotor bimorph transducer mode Up to caused high speed, low torque characteristic double dynamical output be converted into meeting after by epicyclic gearing 70 washing stroke and The high speed that is needed in the low speed that is needed in rinsing stroke, the first output of high torque characteristic and dehydrating stroke, low torque characteristic Second output, to be applied to impeller 130 and sink 120, so as to highly-efficient implementation washing stroke, rinsing stroke And dehydrating stroke.

More than, the present invention is had shown and described with specific preferred embodiment, but the invention is not limited in above-mentioned reality Example is applied, in the range of the thought without departing from the present invention, general technical staff of the technical field of the invention can carry out a variety of Change and modification.

Industrial applicability

The present invention is applied to provide washing machine by combining double dynamical drive motor and epicyclic gearing with high efficiency Washing and dehydrating stroke in required for different qualities driving force and can be formed it is a variety of washing current washing machines driving fill Put and its control, be particularly suitable for use in automatic washing machine.

Claims (20)

1. A kind of 1. drive unit of washing machine, it is characterised in that including：

   The drive motor of birotor bimorph transducer mode, including can be selected by the internal rotor and outer rotor of bimorph transducer independent control Produce to selecting property internal rotor output and outer rotor output；

   Interior axle is inputted, is exported for transmitting above-mentioned internal rotor with the first input；

   Outer shaft is inputted, is combined in a manner of it can rotate with the periphery of above-mentioned input interior axle, for being transmitted with the second input State outer rotor output；And

   Epicyclic gearing, when axial central gear applies the first input in by above-mentioned input, from change caused by planet carrier The gear ratio of speed output is received through the control for the second input that axial ring gear outside above-mentioned input applies.
2. 2. drive unit of washing machine according to claim 1, it is characterised in that

   Also include：

   Interior axle is exported, for being exported to caused by impeller transmission from above-mentioned planet carrier；

   Outer shaft is exported, for being exported to caused by sink transmission from above-mentioned ring gear；And

   Clutch shaft bearing and second bearing, above-mentioned input outer shaft and output outer shaft are respectively arranged at, for so that above-mentioned planetary gear The mode that device is capable of bidirectional rotation is supported,

   Above-mentioned clutch shaft bearing is arranged at the stator supporter extended from stator to inner side.
3. 3. drive unit of washing machine according to claim 1, it is characterised in that defeated to the second of the application of above-mentioned ring gear The rotating speed entered is set to be less than the rotating speed of the first input applied to central gear, and the output of above-mentioned planet carrier is in the first input Rotating speed produce deceleration.
4. 4. drive unit of washing machine according to claim 3, it is characterised in that

   Above-mentioned first input has high speed, low torque characteristic,

   The output of above-mentioned planet carrier has low speed, high torque characteristic, washing or rinsing stroke for above-mentioned washing machine.
5. 5. drive unit of washing machine according to claim 3, it is characterised in that the direction of rotation of above-mentioned second input is the The opposite direction of one input, when the rotating speed of the above-mentioned second input is the 1/4 of the first input, produced from above-mentioned planet carrier first By the output of maximum deceleration under the rotating speed of input.
6. 6. drive unit of washing machine according to claim 1, it is characterised in that inputted in the above-mentioned first input and second In the case of direction of rotation and rotating speed identical, the output of above-mentioned ring gear will not produce speed change.
7. 7. drive unit of washing machine according to claim 6, it is characterised in that

   Above-mentioned first input and the second input have high speed, low torque characteristic respectively,

   Above-mentioned ring gear output is with high speed, low torque characteristic, the dehydrating stroke for above-mentioned washing machine.
8. 8. drive unit of washing machine according to claim 1, it is characterised in that

   Above-mentioned bimorph transducer has a stator core, and said stator core is by multiple external tooths and multiple internal tooths in the outside of annular back yoke and interior Side extension forms,

   In said stator core, the number of teeth of aforementioned external teeth is different with the number of teeth of internal tooth.
9. 9. drive unit of washing machine according to claim 8, it is characterised in that the number of teeth of aforementioned external teeth is more than the tooth of internal tooth Number.
10. 10. drive unit of washing machine according to claim 1, it is characterised in that

    Above-mentioned bimorph transducer includes：

    External stator, for driving outer rotor；And

    Inner stator, for driving internal rotor,

    The number of teeth for being formed at the external stator core of above-mentioned external stator is more than the number of teeth for the inner stator core for being formed at above-mentioned inner stator.
11. 11. drive unit of washing machine according to claim 10, it is characterised in that

    In above-mentioned external stator core, multiple external stator teeth extend from the first back yoke of annular, multiple interior in above-mentioned inner stator core Stator tooth extends from the second back yoke of annular,

    In above-mentioned external stator core and inner stator core, the first back yoke and the second back yoke are combined in a manner of it can separate.
12. 12. drive unit of washing machine according to claim 1, it is characterised in that

    Above-mentioned bimorph transducer includes some Splittables segmentation core that annular combines mutually,

    In above-mentioned some Splittables split core, the number of teeth of aforementioned external teeth is different with the number of teeth of internal tooth.
13. 13. drive unit of washing machine according to claim 1, it is characterised in that above-mentioned bimorph transducer is including inner stator and outside Stator, in order to supplement the moment of torsion of deficiency, increase the thin slice stacking number of one in inner stator core and external stator core.
14. 14. drive unit of washing machine according to claim 1, it is characterised in that

    Above-mentioned epicyclic gearing includes：

    Ring gear, side are connected with above-mentioned input outer shaft；

    Central gear, formed and be integrated with above-mentioned input interior axle；

    Multiple planetary gears, engaged with the exterior face of above-mentioned central gear and the inside face gear of ring gear carry out rotation and Revolution；And

    Planet carrier, at one end portion above-mentioned planetary gear is supported in a manner of it can rotate, rotated together with the planetary gear of revolution, So as to produce speed change output,

    Speed change is exported by exporting interior axle from above-mentioned planet carrier to impeller transmission, and the output of non-speed change is by exporting outer shaft from above-mentioned Ring gear is to sink transmission.
15. 15. drive unit of washing machine according to claim 14, it is characterised in that when what is slowed down from the generation of above-mentioned planet carrier During output, above-mentioned ring gear is set to stationary state by electronic brake, or by applying to above-mentioned ring gear The rotating speed of the output of above-mentioned deceleration and torsion are controlled with the direction of rotation equidirectional of the first input or the revolving force of opposite direction Square.
16. A kind of 16. washing machine, it is characterised in that including：

    Drive motor, including independent the first motor and the second motor for producing the first rotation output and the second rotation output；

    Interior axle is inputted, for transmitting above-mentioned first rotation output；

    Outer shaft is inputted, is combined in a manner of it can rotate with the periphery of above-mentioned input interior axle, for transmitting above-mentioned second rotation Output；

    Speed change gear, when axial central gear applies the first rotation output in by above-mentioned input, from change caused by planet carrier The gear ratio of speed output is received through the control for the second rotation output that axial ring gear outside above-mentioned input applies；

    Interior axle is exported, is exported for transmitting from speed change caused by above-mentioned planet carrier；

    Outer shaft is exported, is combined in a manner of it can rotate with the periphery of above-mentioned output interior axle, for transmitting from above-mentioned annular tooth Exported caused by wheel；

    Sink, it is connected with above-mentioned output outer shaft；And

    Impeller, it is connected with above-mentioned output interior axle.
17. 17. washing machine according to claim 16, it is characterised in that exported to the second rotation that above-mentioned ring gear applies Rotating speed be set to be less than the rotating speed of the first rotation output applied to central gear, the output of above-mentioned planet carrier is in the first rotation The rotating speed transferred out produces deceleration.
18. 18. the washing machine according to claim 16 or 17, it is characterised in that the output of above-mentioned planet carrier is used to wash or float Wash stroke.
19. 19. washing machine according to claim 17, it is characterised in that when obtaining the output of deceleration from above-mentioned planet carrier, The forward rotational speed of the second motor, or the method control by making the second motor reverse or rotate forward is controlled to subtract by electronic brake The rotating speed and moment of torsion of the output of speed.
20. 20. washing machine according to claim 16, it is characterised in that when in dehydrating stroke, above-mentioned washing machine is set Being set to makes the direction of rotation of above-mentioned first rotation output identical with rotating speed with the direction of rotation of rotating speed and the second rotation output, or The rotating speed for being set to export the second rotation is more than the rotating speed of the first rotation output.