CN1536122A

CN1536122A - Full-automatic washing machine and its control method

Info

Publication number: CN1536122A
Application number: CNA031096514A
Authority: CN
Inventors: 安仁根
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2003-04-11
Filing date: 2003-04-11
Publication date: 2004-10-13

Abstract

The present invention discloses an automatic washing machine and its control method. It is characterized by that when the driving component formed from stator and rotor transfers the rotation power into the stirrer or spindrier, it can noiselessly and stably switch and control rotation power in a short period of time. Said invention includes spindrier placed in the cabinet in the form of rotation, stirrer placed in the spindrier and can be independently rotated, spindrier shaft which is supported by shaft sleeve in the form of rotation and used for transferring rotation power into spindrier, washing shaft used for transferring rotation power into stirrer, brushless DC motor and clutch mechanism. Besides, said invention also provides its control method.

Description

Automatic washing machine and control method thereof

Technical field

The invention relates to washing machine, particularly be automatic washing machine and control method thereof.In more detail carry out by the agitator of low speed rotation about possessing washing and rinsing, the new power that dehydration leans on the dehydration barrel of rotation at a high speed to carry out is passed on the automatic washing machine of mechanical device.

Background technology

Generally speaking, washing machine is the rubbing action of the current that cause of the rotation of the sulfurization that utilizes washing agent, washing stirr, percussion that agitator imposes on washings etc., removes the product of all contaminations matter that sticks on clothing etc.Utilize sensor to detect the amount and the kind automatic setting washing methods of washings, and feed water behind the suitable water level, wash under the microcomputer control according to the amount of washings and kind.

The type of drive of existing automatic washing machine has: the rotary power of drive motor is carried out power reception and registration etc. with driving belt and gear, convey to wash shaft or dehydration barrel after, be rotated the mode of agitator or dehydration barrel; According to the control of the speed of brushless direct current motor, when washing and dehydration the washtub mode of dehydration barrel of holding concurrently by different separately speed rotations.

On the one hand, come on stage recently and utilized brushless direct current motor, control the power communicating path in addition, during washing the agitator low speed rotation is carried out washing, during dehydration agitator and dehydration barrel are rotated the structure of carrying out dehydration simultaneously at a high speed, the structure case of this mode is that the spy who is documented in Japan opens on the flat 11-347289.

The mode that above-mentioned Japanese kokai publication hei 11-347289 goes up record is that the startup of engaged clutch mechanism is carried out by helix tube, so there is action unstable, problems such as big noise takes place during the engagement of driving body very.

Summary of the invention

In order to solve the problem that above-mentioned technology exists, the invention provides a kind of drive division about constituting by stator and rotor, when agitator or dehydration barrel are passed on rotary power, can noiselessness, the clutch mechanism and the control method thereof of the new automatic washing machine of switching controls rotary power in stable, short time.

To achieve these goals, the technical solution used in the present invention is: comprising: the dehydration barrel of rotation form is arranged in the outer bucket; Agitator is arranged in the dehydration barrel, and is independent of in the dehydration barrel; Axle sleeve supports dehydrating shaft, with the form of rotating freely, passes on rotary power to dehydration barrel; The washing axial agitator is passed on rotary power; The stator energising, brushless DC motor rotor is rotated; Clutch mechanism switches the power communicating path of brshless DC motor to wash shaft or dehydrating shaft, corresponding washing stroke or dehydration stroke.

Above-mentioned clutch mechanism comprises: the clutch motor is arranged on outer bucket bottom; Cam is combined on the driving shaft of clutch motor; The pull bar guide pipe is fixed on the axle sleeve; During clutch motor-driven pull bar, rectilinear motion is carried out in the guiding of tension member guide pipe, has the tabular surface of formation level on the groove on inclined plane and the lower end, inclined plane; Connector is arranged between the cam and pull bar of clutch motor, when starting the clutch motor, plays the effect that pull bar is pulled to the clutch motor side; Backspring one end is fixed on the pull bar guide pipe leading section, and the other end is fixed on the hook of pull bar opposite side, plays the effect of pull bar restoring force; During dehydration, the movable piece of hollow cylinder type is attached on the groove on inclined plane of pull bar, when switching to washing mode, drops to the tabular surface bottom along the inclined plane; Carry out the lifting form along the gathering sill of movable piece inside and be provided with inserted link; Buffer spring is between movable piece and the inserted link; The shaft coupling limited part is fixed on the bottom of axle sleeve, is provided with the tooth lock section that forms along circumferencial direction; Movable rod one side front end hinge is in conjunction with the bottom of inserted link, the bracing frame bottom upper hinge that shaft coupling limited part bottom forms combine the middle part a bit, during the inserted link lifting, with the middle part of hinge combination a bit be the center, carry out oscillating motion; Along with the direction of reversing of movable rod, shaft coupling switches the rotary power of brshless DC motor along the lifting of dehydrating shaft direction; Connector assembly is communicated to wash shaft to the revolving force of rotor.

After above-mentioned clutch motor slowed down by the inner deceleration tooth lock section that is provided with, tooth lock section motor was passed on power to the driving shaft that is connected cam.

The required moment of torsion of the rotation of above-mentioned clutch motor driving shaft is greater than the recuperability of backspring, and when closing the clutch motor, cam pauses in its position.

Above-mentioned connector assembly comprises: the aerial lug that connects resin on rotor with nut; Aerial lug inner body injection molded forms the flank of tooth that meshes with shaft coupling on the upper end outer axial face that the flank of tooth that forms on axial plane in it and the flank engagement of wash shaft lower end, the internal connector of metal material expose to the aerial lug outside.

For improving the intensity of internal connector, internal connector uses aluminium alloy to make.

Central part is provided with the flexible member fitting recess of annular above the said external connector, assembles flexible member in the fitting recess, i.e. rubber ring.

Dehydrating shaft is different with known dehydrating shaft, is pressed in conjunction with the top axial region in the inboard, upper end of the bottom axial region that internal diameter is big, and the upper end of bottom axial region is to have held the upper bearing of supporting dehydrating shaft.

Reserve certain clearance between lower shaft subordinate's end face of above-mentioned dehydrating shaft and the internal connector upper end, for the packing that can prevent washing machine falls or the bending of the axle that causes during other impact, internal connector contacts with the lower surface of the bottom axial region of dehydrating shaft is first.

The lower end of above-mentioned wash shaft forms platform, has formed the platform corresponding with it on the interior axial plane of internal connector, when connecting screw makes internal connector be combined in the wash shaft bottom, can limit link position.

The formation in the gap between internal connector and the dehydrating shaft is less than the wash shaft bottom to the ball bearing of radial direction support and the gap between the C-ring.

The upper end of above-mentioned wash shaft is provided with the seal member that prevents moisture penetration between wash shaft and dehydrating shaft.

The inboard of above-mentioned seal member is the reliability of guaranteeing to seal, and forms the sealing lip more than 3 at least.

Support the upper bearing top of dehydrating shaft to be provided with the seal member that seals between dehydrating shaft and the axle sleeve, the reliability for guaranteeing to seal on the seal member inboard forms the sealing lip more than 4 sections at least, forms the sealing lip more than at least 3 sections on the outside.

Be located on the upper end outer axial face of inserted link of movable piece inboard buffer spring is arranged, when inserted link and movable piece are assembled, be extruded into top according to movable piece under the recuperability effect of buffer spring, form on the axial long guiding hole bottom on movable piece outer axial face one side and hang, prevent that the movable piece that movable piece breaks away from from preventing the sheet that comes off from inserted link.

Form length on the outer axial face of movable piece along axial guide post, fill in the guide part medial surface and the guide post engagement of the pull bar guide pipe of movable piece, formation can make the straight-line gathering sill of movable piece (9).

Corresponding inclined plane with pull bar, the upper end of above-mentioned movable piece forms, and when pull bar moved horizontally, movable piece carried out elevating movement along vertical direction.

One end of above-mentioned backspring forms annular shape, can be suspended on the hook of pull bar; The diameter of the winding of the other end can be suspended on pull bar guide pipe rearward end greater than the other parts diameter, and the fixed position.

Above-mentioned connecting rod is that an end is combined in cam, and other end hinge is combined in pull bar, and when the recuperability of backspring is done the time spent, the downside of an end of the pull bar that combines with connecting rod forms and limits the stop hook of pull bar to position that the pull bar guide pipe inserts.

Between the upper side of above-mentioned shaft coupling and the lower side bearing compression spring is arranged, when dehydration mode is switched, pushing away to the bottom of shaft coupling direction.

Shaft coupling limited part lateral surface is provided with protrusion, protrusion is between the bracing frame of inserted link (10) and shaft coupling limited part, possess in the Y-shaped movable rod of the straight below of protrusion and cross the connecting portion that connects two side levers, possessing dehydration between protrusion and the connecting portion, the time to give movable rod be the center with the fixed axis, the extension spring of the revolving force that reverses by the hour hands direction.

Shaft coupling is located on the cylinder body upper end, flange part along the radial direction expansion, form along circumferencial direction near the flange part upper edge and cooperates with the tooth lock section of shaft coupling limited part, the flank of tooth that possesses on the interior axial plane on the internal connector upper end outer axial face with the flank of tooth of formation dehydrating shaft and connector assembly is consistent.

Be formed on the tooth pitch of the flank of tooth on the axial plane in the body of shaft coupling, after shaft coupling descended fully, the internal connector upper end position when mesh with internal connector was a benchmark, and upper side and lower side form mutual different modulus.

The tooth pitch of the flank of tooth that forms on the axial plane in the body of above-mentioned shaft coupling, the internal connector upper end position during with engagement is a benchmark, the flank of tooth of its underpart forms bigger modulus.

Modulus ratio the best of the flank of tooth that the flank of tooth that axial plane top forms in the body of above-mentioned shaft coupling and bottom form is 1: 1.5.

Be formed in the flank of tooth of interior axial plane of shaft coupling, when forming bigger modulus with the flank of tooth of the part of internal connector engagement, the bottom that is in the big flank of tooth of the tooth pitch of lower side is handled circular, forms with the engagement of the tooth lock section of internal connector easily and separates.

The lower side of the above-mentioned lower side flank of tooth is, the flank of tooth clutch of easier formation and internal connector and carrying out forms the involute profile surface and carries out circle processing.

The place that each paddy of the following and lower side flank of tooth of the upper side flank of tooth that forms on the axial plane in the body of above-mentioned shaft coupling contacts is carried out circle and is handled, and changes and increase the ability of bearing twisting stress in order to shorten rapid end face.

Form most individual protrusion along circumferencial direction on the body lower surface of above-mentioned shaft coupling.

The flexible member of the flexible member fitting recess of said external connector is a rubber ring.

Rubber ring is to form the cushion that its internal diameter is slightly less than the outside dimension of internal connector on the bottom, inside edge, the radial direction outside of the cushion of bottom surfaces forms the groove for the annular in the distortion leeway of giving the cushion radial direction, and groove is to form by isolating along radial direction.

Contacted position, the shaft coupling lower surface of the upper side of above-mentioned rubber ring forms groove, and in order to prevent to be close to and to drive below the shaft coupling phenomenon of rubber ring, the while is in order to add the cushions.

For the anglec of rotation constant speed rotation identical of the cam of above-mentioned clutch motor, on driving shaft, directly connect with driving shaft.

The cam groove of angular range that formation on the outer axial face of above-mentioned cam is decided.

The angulation scope of above-mentioned cam groove is that 180 degree are to 210 degree.

The control method of automatic washing machine comprises: be connected the rotor of wash shaft and center on the brushless direct current motor that the rotor form is arranged on the stator formation washing machine drive source in its outside; Shaft coupling risen or descend and the clutch motor of the position when delivering to washing and dehydration; During the clutch motor-driven, shaft coupling interlock is risen or is descended, and only passes on power to wash shaft during washing, passes on power to wash shaft and the dehydration barrel that is arranged on its outside simultaneously during dehydration; After the washing feedwater finishes, start the clutch motor, execution rose to shaft coupling before the stage of washing mode position, in order to eliminate the constraint of shaft coupling, execution allows stage of the left and right counter-rotating of brushless direct current motor, according to the dehydrating shaft of shaft coupling engagement and the friendship bifurcated of internal connector, the flank of tooth of the inner cylinder of shaft coupling is subjected to the mutual rightabout surface pressure effect from the flank of tooth of the flank of tooth of dehydrating shaft bottom and internal connector upper end, when preventing the clutch motor-driven, the phenomenon that the constraint shaft coupling rises appears.

After the driving of above-mentioned clutch motor switched to washing mode, before washing was carried out, appending execution was brushless direct current motor left and right counter-rotating stage in the regular hour in cycle with the short time.

The control method of automatic washing machine also comprises: be connected the rotor of wash shaft and center on the brushless direct current motor that the rotor form is arranged on the stator formation washing machine drive source in its outside; Shaft coupling risen or descend and the clutch motor of the position when delivering to washing and dehydration; During the driving of clutch motor, the shaft coupling interlock is risen or is descended, and only passes on power to wash shaft during washing, passes on power to wash shaft and the dehydration barrel that is arranged on its outside simultaneously during dehydration; Under the effect of clutch motor, when shaft coupling rises back execution washing mode, prevent the shaft coupling limited part of shaft coupling rotation, after washing finishes, in order to switch to dehydration mode, start the clutch motor, execution dropped to shaft coupling before the stage of dehydration mode position, in order to eliminate the constraint of shaft coupling, execution allows a brushless direct current motor left side, the stage of dextroversion, according to the staggering mutually of the shaft coupling limited part of shaft coupling engagement, between the tooth lock section of shaft coupling and the shaft coupling limited part under the mutual rightabout surface pressure effect, the phenomenon of the decline of shaft coupling appears when preventing the clutch motor-driven retraining.

When above-mentioned brushless direct current motor carries out left and right inversion driving, the anglec of rotation of the control anglec of rotation during less than washing.

The driving of above-mentioned clutch motor, after switching to dehydration mode, carry out before the dehydration, can form more really between the shaft coupling and the internal connector flank of tooth tooth and, appending execution is brushless direct current motor cycle, the stage of left and right counter-rotating within a certain period of time with the shortest time.

The control method of automatic washing machine also comprises: be connected the rotor of wash shaft and center on the brushless direct current motor that the rotor form is arranged on the stator formation washing machine drive source in its outside; The clutch motor rises shaft coupling or descends, and the position when delivering to washing and dehydration; During the clutch motor-driven, shaft coupling interlock is risen or is descended, and only passes on power to wash shaft during washing, passes on power to wash shaft and the dehydration barrel that is arranged on its outside simultaneously during dehydration; Carry out the 1st stage of feedwater for washing; After carrying out feedwater, the cam of clutch motor is in the dissengaged positions of initial stage point, the 2nd stage of starting clutch motor and rotating cam; The 3rd stage of computing time when starting the clutch motor; Judge whether the clutch motor that the cam rotation causes is transformed into on-state, reaching the 4th stage that forms in the time of setting; Judged result in the 4th stage, when the conversion that is transformed into on-state forms within setting-up time, the 5th stage that begins to calculate the umber of pulse that takes place in the clutch motor immediately after connecting; Judge whether the umber of pulse of the calculating in the 5th stage of execution reaches the 6th stage of the umber of pulse of having set; When judged result in the 6th stage, umber of pulse reach the umber of pulse of having set, turn off the clutch motor, and keep the 7th stage of cam position; Though judged result surpasses setting-up time in the 4th stage, when not connecting, turns off the 8th stage of clutch motor; After carrying out for the 8th stage, be cycle left and right counter-rotating in the regular hour with the short time, carry out the 9th stage that action is eliminated in constraint brushless direct current motor; The 10th stage that the execution number of times of action is eliminated in the constraint of inspection brushless direct current motor; Check result in the 10th stage when the execution number of times of the constraint elimination action of brushless direct current motor does not reach the execution number of times of having set, is carried out once more and is started the clutch motor, and the 11st stage in the 2nd stage of driving cam; Check result in the 10th stage, when the execution number of times of the constraint elimination action of brushless direct current motor reaches the execution number of times of having set, the 12nd stage that warning and washing machine stop.

After above-mentioned control feedwater finished, from opening the clutch motor, to the switch change-over of clutch motor internal, the time required to the state of opening was, when the frequency number of the rated voltage that applies on the clutch motor is 50Hz or 60Hz, for common being suitable for was set in 5 seconds.

The control method of automatic washing machine also comprises: be connected the rotor of wash shaft and center on the brushless direct current motor that the rotor form is arranged on the stator formation washing machine drive source in its outside; Shaft coupling risen or descend and the clutch motor of the position when delivering to washing and dehydration; During the clutch motor-driven, shaft coupling interlock is risen or is descended, and only passes on power to wash shaft during washing, passes on power to wash shaft and the dehydration barrel that is arranged on its outside simultaneously during dehydration; The cam of clutch motor is in the on-state of support level, starts the clutch motor, and the 1st stage of rotating cam; The 2nd stage of computing time when starting the clutch motor; Judge whether the clutch motor that the cam rotation causes is transformed into dissengaged positions, reaching the 3rd stage that forms in the time of setting; Judged result in the 3rd stage is transformed into the conversion of dissengaged positions, when forming within setting-up time, after the cut-out, begins to recomputate the 4th stage of the driving time of clutch motor immediately; Judge whether the driving time of the calculating in the 4th stage of execution reaches the 5th stage of the time of setting; Judged result in the 5th stage, the clutch motor-driven time after cutting off is turned off the clutch motor when reaching setting-up time, and cam is maintained the 6th stage of initial stage point; Though judged result surpasses setting-up time in the 3rd stage, when not connecting, turns off the 7th stage of clutch motor; After carrying out for the 7th stage, be cycle left and right counter-rotating in the regular hour with the short time, carry out the 8th stage that action is eliminated in constraint brushless direct current motor; The 9th stage that the execution number of times of action is eliminated in the constraint of inspection brushless direct current motor; Check result in the 9th stage when the execution number of times of the constraint elimination action of brushless direct current motor does not reach the execution number of times of having set, is carried out once more and is started the clutch motor, and the 10th stage in the 1st stage of driving cam; Check result in the 9th stage, when the execution number of times of the constraint elimination action of brushless direct current motor reaches the execution number of times of having set, the 11st stage that warning and washing machine stop.

Above-mentioned control method is in order to switch to dehydration mode, from opening the clutch motor, switch change-over to the clutch motor internal, the time required to the state of opening is, when the frequency number of the rated voltage that applies on the clutch motor is 50Hz or 60Hz, for common being suitable for was set in 7 seconds.

The control method of automatic washing machine also comprises: be connected the rotor of wash shaft and center on the brushless direct current motor that the rotor form is arranged on the stator formation washing machine drive source in its outside; Shaft coupling risen or descend and the clutch motor of the position when delivering to washing and dehydration; During the clutch motor-driven, shaft coupling interlock is risen or is descended, and only passes on power to wash shaft during washing, passes on power to wash shaft and the dehydration barrel that is arranged on its outside simultaneously during dehydration; Connect the 1st stage of power supply; Detect under the state of connecting power supply, check the 2nd stage of the open/close state of clutch motor internal switch; Detect the result in the 2nd stage, the internal switch of clutch motor starts the 3rd stage of clutch motor and rotating cam when on-state; The 4th stage of computing time when starting the clutch motor; Judge that clutch motor that cam rotation causes is transformed into dissengaged positions and whether is reaching the 5th stage that forms in the time of setting; Judged result in the 5th stage when the conversion that is transformed into dissengaged positions forms, begins to recomputate the 6th stage of the driving time of clutch motor immediately after cutting off within setting-up time; Judge whether the driving time of the calculating in the 6th stage of execution reaches the 7th stage of the time of setting; Judged result in the 7th stage, the clutch motor-driven time after cutting off is when reaching setting-up time, turns off the clutch motor and cam maintained the 8th stage of initial stage point; Though judged result surpasses setting-up time in the 3rd stage, when not connecting, turns off the 9th stage of clutch motor; After carrying out for the 9th stage, be cycle left and right counter-rotating in the regular hour with the short time, carry out the 10th stage that action is eliminated in constraint brushless direct current motor; The 11st stage that the execution number of times of action is eliminated in the constraint of inspection brushless direct current motor; Check result in the 11st stage when the execution number of times of the constraint elimination action of brushless direct current motor does not reach the execution number of times of having set, is carried out the 12nd stage in the 3rd stage of starting clutch motor and driving cam once more; When the execution number of times that check result in the 11st stage, the constraint of brushless direct current motor are eliminated action reaches the execution number of times of having set, show wrong and stop the 13rd stage of washing machine; Detect the result in the 2nd stage, the internal switch of clutch motor starts the 14th stage of clutch motor and rotating cam when dissengaged positions; The 15th stage of computing time when starting the clutch motor; Judge that clutch motor that cam rotation causes is transformed into on-state and whether is reaching the 16th stage that forms in the time of setting; Judged result in the 16th stage when the conversion that is transformed into on-state forms, is carried out the 17th stage in the 3rd stage within setting-up time; Though judged result surpasses setting-up time in the 16th stage, when not connecting, turns off the 18th stage of clutch motor; After carrying out for the 18th stage, be cycle left and right counter-rotating in the regular hour with the short time, carry out the 19th stage that action is eliminated in constraint brushless direct current motor; The 20th stage that the execution number of times of action is eliminated in the constraint of inspection brushless direct current motor; Check result in the 20th stage when the execution number of times of the constraint elimination action of brushless direct current motor does not reach the execution number of times of having set, is carried out the 21st stage in the 14th stage of starting clutch motor and driving cam once more; When the execution number of times that check result in the 20th stage, the constraint of brushless direct current motor are eliminated action reaches the execution number of times of having set, show wrong and stop the 22nd stage of washing machine.

Above-mentioned cam rotation, the switch change-over of judging the clutch motor is 5 seconds to the setting-up time in the 5th the stage whether state that closes forms in the time of setting, according to cam rotation, the switch change-over of judging the clutch motor is 7 seconds to the setting-up time in the 16th the stage whether state of opening forms in the time of setting.

In sum, the invention has the beneficial effects as follows: the present invention be by the drive division that constitutes by stator and rotor when agitator or dehydration barrel are passed on rotary power, the rotary power of passing on to wash shaft or dehydrating shaft has can be stablized and the effect of switching controls in the short time.

And, the present invention is driving shaft and the rotation of cam constant speed when starting the clutch motor, the clutch motor can not take place fully because of there not being the restitution of cam when closing, and recover the conflict noise cause rapidly, switching power not only forms under the low noise state, and after the powershift of washing mode forms, do not need to keep electric power and reduce consumption electric power, can realize high efficiency clutch mechanism.

Meanwhile, washing machine of the present invention is before the switching of washing and dehydration mode, allow and reverse about brushless direct current motor, under the state of the constraint of elimination shaft coupling, carry out the switching of washing and dehydration mode, when the change action to washing and dehydration mode occurring, the situation of clutch motor constraint takes place, according to the gauge tap time of clutch motor, behind the restrained condition of the shaft coupling that causes, and eliminate constraint once more, and start the clutch motor, can form more stable and certain clutch effect.

Description of drawings

Fig. 1 is the automatic washing machine skeleton diagram of clutch mechanism of the present invention.

Fig. 2 a and Fig. 2 b are the major part skiagraphs of the effect of expression clutch mechanism of the present invention,

State diagram when Fig. 2 a is washing.

State diagram when Fig. 2 b is dehydration.

Fig. 3 a and Fig. 3 b are the major part enlarged drawings of Fig. 2 a and Fig. 2 b,

State diagram when Fig. 3 a is washing.

State diagram when Fig. 3 b is dehydration.

Fig. 4 a is the ground plan along the I-I line of Fig. 2 a.

Fig. 4 b is the ground plan along the II-II line of Fig. 2 b.

Fig. 5 is the enlarged drawing of wash shaft and the dehydrating shaft structure of presentation graphs 2a.

Fig. 6 is the A portion enlarged drawing of Fig. 2 a.

Fig. 7 is the sectional drawing of main assembled state of the present invention, passes on the state diagram before the assembling of key element etc. for the power that the power of clutch motor is communicated to shaft coupling.

Fig. 8 is the stereogram of state after the assembling of presentation graphs 7.

Fig. 9 is the bottom isometric view of shaft coupling.

Figure 10 is the stereogram of rubber ring.

Figure 11 is the sectional drawing of Figure 10.

Figure 12 is the stereogram of clutch motor.

Figure 13 is the exploded perspective view of Figure 12.

Cam when Figure 14 a to Figure 14 c is a clutch motor of the present invention and the skeleton diagram of the action relationships between the switch,

Cam when Figure 14 a is the washing mode support level and the state diagram of switch.

Figure 14 b is transformed into the cam before the dehydration mode and the state diagram of switch.

Figure 14 c is the cam in when point at initial stage and the state diagram of switch.

Figure 15 is the time chart of action relationships between clutch motor of the present invention and cam and the switch.

Figure 16 is the washing initial stage of washing machine of the present invention, the time chart of the action of brushless direct current motor and clutch motor.

Figure 17 is washing machine of the present invention washing when finishing and dehydration during the initial stage, the time chart of the action of brushless direct current motor and clutch motor.

When Figure 18 is a switching washing mode of the present invention, the flow chart of the control procedure of clutch motor.

When Figure 19 is a switching dehydration mode of the present invention, the flow chart of the control procedure of clutch motor.

Figure 20 is the flow chart of the initialization procedure of clutch motor of the present invention.

Among the figure:

1: outer bucket 2: dehydration barrel

3: agitator 4: wash shaft

5: dehydrating shaft 5a: the top axial region

5b: bottom axial region 6: clutch motor

600: cam 600a: the cam groove face

601: bar connecting axle 602: driving shaft

650: switch 650a: protuberance

7: brushless direct current motor 7a: stator

7b: rotor 8: pull bar

800: groove 801: inclined plane

802: tabular surface 803: hook

805: stop hook 9: movable piece

900: gathering sill 901: long guiding hole

902: guide post 10: inserted link

100: sheet 11 prevents to come off: buffer spring

12: movable rod 12a: connecting portion

12b: fixed axis 13: extension spring

14: backspring 15: shaft coupling

150a, 150b: the flank of tooth 151: tooth lock section

152: flange part 154: protrusion

16: connector assembly 16a: aerial lug

162a: fitting recess 16b: internal connector

160b: the flank of tooth of internal connector inner peripheral surface

161b: the flank of tooth of internal connector outer peripheral face

17: connector 18: rubber ring

180: cushion 181: groove

182: groove 183: flange

20: axle sleeve 22: the shaft coupling limited part

220: bracing frame 221: the tooth lock section

23: upper shaft sleeve 24: the bottom axle sleeve

30: pull bar guide pipe 30a: guide part

30a-1: gathering sill 40: compression spring

51: ball bearing 52:C-ring

53: seal member 530: sealing lip

54: seal member 540a, 540b: sealing lip

400: platform

The specific embodiment

Below in conjunction with the drawings and specific embodiments the present invention is described in further detail: Fig. 1 is the automatic washing machine skeleton diagram of clutch mechanism of the present invention, Fig. 2 a and Fig. 2 b are the major part skiagraphs of clutch mechanism effect of the present invention, Fig. 3 a and Fig. 3 b are the major part enlarged drawings of Fig. 2 a and Fig. 2 b, Fig. 4 a is the ground plan along the I-I line of Fig. 2 a, and Fig. 4 b is the ground plan along the II-II line of Fig. 2 b.Automatic washing machine of the present invention comprises: rotatable form is arranged on the dehydration barrel 2 in the outer bucket 1; Agitator 3 is arranged in the dehydration barrel 2, and is independent of in the dehydration barrel 2 and can rotates; Dehydrating shaft 5 (a) is supported to rotate freely form with reference to Fig. 2, passes on rotary power to dehydration barrel 2 by axle sleeve 20; Pass on the wash shaft 4 of rotary power to agitator; Along with switch on the brushless direct current motor 7 that rotor 7b is rotated to stator 7a; Corresponding washing stroke or dehydration stroke, clutch mechanism can convey to wash shaft 4 to the power of brushless direct current motor 7 or dehydrating shaft 5 switches.

Clutch mechanism comprises: the clutch motor 6 that outer bucket 1 bottom is provided with; Cam 600 is combined on the driving shaft 602 of clutch motor 6; Pull bar guide pipe 30 is fixed on the axle sleeve 20; When driving clutch motor 6, rectilinear motion is carried out in the guiding of tension member guide pipe 30, and pull bar 8 has inclined plane 801, forms the tabular surface 802 of level on the groove 800 on inclined plane 801 and the lower end; Connecting rod 17 is arranged between the cam 600 and pull bar 8 of clutch motor 6, when starting clutch motor 6, plays the effect that pull bar 8 is pulled to clutch motor 6 sides; Backspring 14 1 ends are fixed on pull bar guide pipe 30 leading sections, and the other end is fixed on the hook 803 of pull bar 8 opposite sides, give pull bar 8 restoring forces; During dehydration, the movable piece 9 of hollow cylinder type is attached on the groove with inclined plane 801 800 of pull bar 8, and when switching to washing mode, 801 drop to tabular surface 802 bottoms along the inclined plane; Inserted link 10 carries out the setting of lifting form along the gathering sill 900 of movable piece 9 inside; Buffer spring 11 is between movable piece 9 and the inserted link 10; Shaft coupling limited part 22 is fixed on the bottom of axle sleeve 20, is provided with the tooth lock section 221 that forms along circumferencial direction; The bottom upper hinge of inserted link 10 is combined in the movable rod 12 1 side front ends of Y-shaped, the bracing frame 220 bottom upper hinges that shaft coupling limited part 22 bottoms form in conjunction with the middle part a bit, during inserted link 10 liftings with the middle part of hinge combination a bit be the center, movable rod 12 is carried out oscillating motion; Along with the direction of reversing of movable rod 12, in the time of along dehydrating shaft 5 direction liftings, switch the rotary power of brushless direct current motor 7, convey to shaft coupling 15; For the revolving force of rotor 7b is reached wash shaft 4, be provided with connector assembly 16.

Clutch motor 6 is that tooth lock section motor is passed on power to the driving shaft 602 that is connected cam 600 after slowing down by the deceleration tooth lock section that inside is provided with.

Connector assembly 16 comprises: the aerial lug 16a of nutted resin object on rotor 7b; Integral molded plastic is shaped on the aerial lug 16a inside, form the flank of tooth 160b with the flank engagement of wash shaft 4 lower ends in it on axial plane, form internal connector 16b on the upper end outer axial face of exposing to aerial lug 16a outside with the metal material of the flank of tooth 161b of shaft coupling 15 engagements.In order to improve the intensity of internal connector 16b, preferably use aluminium alloy to make.

Possessed annular elastic component device groove 162a above the aerial lug 16a on the central part, having assembled flexible member among the fitting recess 162a is rubber ring 18.

Fig. 5 is the enlarged drawing of wash shaft and the dehydrating shaft structure of Fig. 2 a, dehydrating shaft 5 is different with existing dehydrating shaft, be pressed in conjunction with top axial region 5a in the inboard, upper end of the bottom axial region 5b that internal diameter is big, the upper end of bottom axial region 5b has held the upper bearing 23 of supporting dehydrating shaft 5.

In addition, the lower end of wash shaft 4 forms platform 400.Formed the platform corresponding on the interior axial plane of internal connector, made internal connector 16b be combined in wash shaft 4 bottoms, can limit the fixed position with fixed screw with it.

Reserve certain clearance between the axial region 5b lower surface, bottom of dehydrating shaft 5 and the internal connector 16b upper end, for the packing that can prevent washing machine falls or the bending of other impact causes axle, internal connector 16 contacts with the lower surface of the bottom axial region 5b of dehydrating shaft 5 is first.

The clearance G 1 that forms between internal connector 16b and the dehydrating shaft 5 is less than wash shaft 4 bottoms to the ball bearing 51 of radial direction support and the clearance G 2 between the C-ring 52.

The upper end of wash shaft 4 is provided with the seal member 53 that prevents the moisture penetration between wash shaft 4 and dehydrating shaft 5, and the reliability for guaranteeing to seal in the inboard of seal member 53 forms the sealing lip 530 more than 3 at least.

Fig. 6 is the A portion enlarged drawing of Fig. 2 a, support upper axis radial journal bearing 23 tops of dehydrating shaft 5 to be provided with the seal member 54 that seals between dehydrating shaft 5 and the axle sleeve 20, the seal member 54 inboard reliabilities that go up to guaranteeing to seal, at least form the sealing lip 540a more than 4 sections, form the sealing lip 540b more than at least 3 sections on the outside.

Fig. 7 is the sectional drawing of the main assembled state of clutch mechanism of the present invention, and Fig. 8 is the stereogram of state after the assembling of Fig. 7.Inserted link 10 is filled in movable piece 9 inboards, and the upper end outer axial face is provided with buffer spring 11, when inserted link 10 is assembled with movable piece 9, is provided with the movable piece sheet 100 that prevents to come off, and prevents that movable piece 9 breaks away from from inserted link 10.

Inserted link 10 is filled in movable piece 9 inboards, have on the outer axial face of upper end along the outstanding movable piece of the radial direction sheet 100 that prevents to come off, fill under the compressive state of buffer spring 11 on inserted link 10 outer axial face, when inserted link 10 is pressed into movable piece 9 inside, the movable piece of inserted link 10 sheet 100 that prevents to come off is on movable piece 9 outer axial face one side, form in the axial long guiding hole 901, under the recuperability effect of buffer spring 11, though movable piece 9 is extruded into top, movable piece prevents to come off and hangs over long guiding hole 901 bottoms of movable piece 9 on sheet 100 lower ends, prevents the phenomenon that movable piece 9 breaks away from from inserted link 10.

The outer axial face of movable piece 9 is provided with length along axial guide post 902, the guide part 30a medial surface of the pull bar guide pipe 30 of movable piece 9 and guide post 902 engagements, and formation can make movable piece 9 straight-line gathering sill 30a-1.

The upper end of movable piece 9 is that corresponding inclined plane 801 with pull bar 8 forms, so pull bar 8 is when moving horizontally, and movable piece 9 carries out elevating movement along vertical direction.

One end of backspring 14 forms annular attitude, makes on its hook that can be suspended on pull bar 8 803; The diameter D2 of the winding of the other end makes it can be suspended on pull bar guide pipe 30 rearward end and fixed position greater than other parts diameter D1.

Connecting rod 17 is that an end is combined in cam 600, and other end hinge is combined in pull bar 8.The downside of one end of the pull bar 8 that combines with connecting rod is provided with and stops hook 805, when the recuperability of backspring 14 is done the time spent, limits pull bar 8 to position that pull bar guide pipe 30 inserts.

With reference to Fig. 2 a and Fig. 2 b, be provided with compression spring 40 between the upper side of shaft coupling 15 and the lower side bearing 24, when dehydration mode is switched, push away shaft coupling 15 to the bottom direction.

With reference to Fig. 2 a to Fig. 3 b and Fig. 7 and Fig. 8, on shaft coupling limited part 22 lateral surfaces protrusion 222 is arranged, protrusion 222 is between the bracing frame 220 of inserted link 10 and shaft coupling limited part 22, in the Y-shaped movable rod 12 of protrusion 222 straight belows, have and cross the connecting portion 12a that connects two side levers, between protrusion 222 and the connecting portion 12a extension spring 13 is arranged, during dehydration, making movable rod 12 is the center with fixed axis 12b, reverses by the hour hands direction.

The contacted front end face of flange part 152 bottom surfaces of the leading section of movable rod 12 and shaft coupling 15 is processed into circle in order to shorten frictional force.Fig. 9 is the bottom surface oblique view of shaft coupling, shaft coupling 15 has on the cylinder body upper end along the flange part 152 of radial direction expansion, form the tooth lock section 151 that cooperates with the tooth lock section 221 of shaft coupling limited part 22 along circumferencial direction near flange part 152 upper edge, geared surface 150a/150b on the interior axial plane is consistent with the flank of tooth on the internal connector 16b upper end outer axial face of the flank of tooth that constitutes dehydrating shaft 5 and connector assembly 16.

Be formed on the tooth pitch of the flank of tooth 150a/150b on the axial plane in the body of shaft coupling 15, after shaft coupling 15 descends fully, when meshing with internal connector 16b, be benchmark with internal connector 16b upper end position, upper side flank of tooth 150a and lower side flank of tooth 150b form different modulus mutually.

The tooth pitch of the flank of tooth that forms on the axial plane in the body of shaft coupling 15, the internal connector 16b upper end position during with engagement is a benchmark, the flank of tooth 150b of its underpart forms bigger modulus.

The modulus ratio of the flank of tooth 150b that flank of tooth 150a that axial plane top forms in the body of shaft coupling 15 and bottom form is preferably formed as 1: 1.5.

Be in the bottom of the big flank of tooth 150b of the tooth pitch of lower side in the flank of tooth that forms on the axial plane in the body of shaft coupling 15, carry out circle and handle, mesh with the flank of tooth 161b of internal connector 16b and separate for easy.Carry out the bottom of the circular lower side flank of tooth 150b that handles, for can be easily and the flank of tooth 161b of internal connector 16b carry out interlock, formation involute profile surface.

Each paddy contact point that the following of upper side flank of tooth 150a and lower side flank of tooth 150b are arranged on the axial plane in shaft coupling 15 bodies in order to shorten rapid end face variation and to increase the ability of bearing twisting stress, carries out circle and handles.Form a plurality of protrusion 154 along circumferencial direction on the body lower surface of shaft coupling 15.

Form protrusion 154 along circumferencial direction on the shaft coupling 15 body lower surfaces, switching according to dehydration mode, when shaft coupling 15 descends, play and reduce shaft coupling 15 and the flexible member that is assemblied in the flexible member fitting recess 162a of aerial lug 16a, the i.e. effect of the contact area of rubber ring 18.

Figure 10 is the stereogram of rubber ring shape, Figure 11 is the sectional drawing of Figure 10, rubber ring 18 is to form cushion 180 on the bottom, inside edge, its internal diameter is slightly less than the outside dimension of internal connector 16b, the radial direction outside of the cushion 180 of bottom surfaces forms annular groove 181, in order to give the distortion leeway of cushion 180 radial directions, form groove 182 with contacted position, shaft coupling 15 lower surfaces of upper side, for preventing to be close to and to drive below the shaft coupling 15 phenomenon of rubber ring 18, simultaneously in order to add the cushions.Groove 182 above the shaft coupling 15 forms by the flange 183 of isolating the annular that forms along radial direction.

The mechanism of clutch mechanism of the present invention is as follows: before the washing beginning, do not give the state that applies the pass of power supply on the clutch motor 6, shown in Fig. 2 b and Fig. 3 b, shaft coupling 15 is kept the state of decline.At this moment, movable piece 9 is on the groove on the inclined plane 801 with pull bar 8, and shaft coupling 15 is to be in the declivity point.

In the above-mentioned state, the clutch motor applies power supply, and when opening clutch motor 6, the driving force of clutch motor 6 conveys to cam 600 by driving shaft 602, by rotatablely moving of cam 600, connecting rod 17 is to clutch motor 6 side shiftings, thereupon, accept the guiding of pull bar guide pipe 30, pull bar is dragged to clutch motor 6 sides.The backspring 14 that is arranged on 30 rearward end of pull bar guide pipe stretches.

During cam 600 rotations, the movable piece 9 of contact on the inclined plane 801 of pull bar 8 is tilted face 801 and pins decline, and illustrated in Fig. 4 a, when cam 600 was in support level, as Fig. 2 a and Fig. 3 a, movable piece 9 was in the bottom of the tabular surface 802 of pull bar 8.

Cam 600 rotates to support level, and the pull bar 8 followed with it moves to the clutch motor side, cause when movable piece 9 descends, and movable piece 9 compression buffer springs 11, thereupon, inserted link 10 that can the setting of lifting form along the gathering sill 900 of movable piece 9 also descends.

Inserted link 10 descends, and hinge is combined in the movable rod 12 of inserted link 10, is the center with fixed axis 12b, and shaft coupling limited part 22 connects the bottom that is fixed on axle sleeve 20, and counterclockwise reverse to drawing in the position of any in the middle part of bracing frame 220.Movable rod 12 is the center with fixed axis 12b, and when the counter clockwise direction of drawing was reversed, end in contact was pushed to along dehydrating shaft 5 shaft coupling 15 in flange part 152 bottom surfaces of shaft joint 15 before the movable rod 12 to the axle upper direction.

When finishing the powershift of washing mode, be formed on the tooth lock section 151 of shaft coupling 15 upper ends, shown in Fig. 2 a and 3a, be fixed on axle sleeve 20 bottom surfaces on shaft coupling limited part 22 in the tooth lock section 221 that possesses be meshed.

When the tooth lock section 151 of shaft coupling 15 was meshed with the tooth lock section 221 of shaft coupling limited part 22, shaft coupling 15 broke away from connector assembly 16, only rotated wash shaft 4 when making rotor 7b rotation.

That is, during washing, 15 states that are meshed with the flank of tooth of the outer axial face of dehydrating shaft 5 of shaft coupling, with the out of mesh state of flank of tooth 161b of internal connector 16b upper end, the rotary power of rotor 7b conveys to agitator 3 by 4 of wash shaft.

In addition, the tooth lock section 151 of shaft coupling 15 is engaged under the state of tooth lock section 221 of shaft coupling limited part 22, prevents that the rotation of shaft joint 15 from being undertaken by the tooth lock section 221 of shaft coupling limited part 22.

When switching to washing mode and washing, clutch motor 6 is kept the state of pass, also can keep the position of cam 600.

The course of action explanation of the clutch mechanism during below to dehydration.Shown in Fig. 2 a and Fig. 3 a, when dewatering after washing and washing are finished, when requiring to switch to the power communicating path of dehydration mode, apply power supply to clutch motor 6 once more, drive clutch motor 6, rotating cam 600.

Therefore, when cam 600 rotations of clutch motor 6 moved to dehydration location, pull bar 8 was by under the recuperability effect of backspring 14, away from clutch motor 6.

Shown in Fig. 2 b and Fig. 3 b, in the washing mode, contact is at the movable piece 9 of the tabular surface 802 of pull bar 8, when finishing the recovery point of pull bar 8, is on the groove 800 on inclined plane 801 of pull bar 8.

Along with moving of pull bar 8, cause when movable piece 9 rises that relax the compression stress that buffer spring 11 is applied, the inserted link 10 that can the lifting form be provided with along the gathering sill 900 of movable piece 9 also rises thereupon.

Along with the rising of inserted link 10, hinge is combined in the movable rod 12 of inserted link 10, is the center with fixed axis 12b, is fixed on the bottom of axle sleeve 20, and shaft coupling limited part 22 connects and is provided with on the bracing frame 220, (reverses with reference to Fig. 2 a and Fig. 3 clockwise direction on a) by drawing.

Movable piece 12 is the center with fixed axis 12b, when the clockwise on drawing reverses, eliminates movable piece 12 front ends and supports shaft coupling 15, and push away to the axle upper direction along dehydrating shaft 5.

Elimination is during to the holding power of the movable piece 12 of shaft coupling 15, and shaft coupling 15 is that the recuperability effect according to deadweight and compression spring 40 descends down, and the tooth lock section 151 of shaft coupling 15 breaks away from from the tooth lock section 221 of shaft coupling limited part 22 thereupon.

In addition, when shaft coupling 15 descends fully, in the shaft coupling 15 flank of tooth 150a/150b of axial planes separately with the internal connector 16b upper end outer axial face that is combined in wash shaft 4 on flank of tooth 161b and the flank of tooth of dehydrating shaft 5 bottoms be meshed, thereupon, when rotor 7b rotates at a high speed, form the high speed rotation of wash shaft 4 and dehydrating shaft 5, dewater.

At this moment, be formed among the flank of tooth 150a/150b of interior axial plane of shaft coupling 15, form bigger modulus with the flank of tooth 150b of the part of internal connector 16b engagement, the bottom that is in the big flank of tooth 150b of the tooth pitch of lower side simultaneously has been processed into circle, forms with the engagement of the flank of tooth 161b of internal connector 16b easily and separates.

Particularly, the lower side of the lower side flank of tooth 150b of the circular shaft joint of handling 15 has formed the involute profile surface, the flank of tooth 161b clutch of easier formation and internal connector 16b.

In addition, be formed on axial plane in shaft coupling 15 bodies upper side flank of tooth 150a below and the tooth fouling point of the lower side flank of tooth be to have handled circle, form and do not produce rapid variation, increase the strength of the flank of tooth twisting stress of bearing shaft coupling 15.

On the one hand, in the powershift process of washing mode, when causing that according to the driving of clutch motor 6 washing shaft coupling 15 enters the position of washing, the position of engagement of the tooth lock section of shaft coupling limited part 22 and the tooth lock section of shaft coupling 15 not to the time, the state that 15 moments of shaft coupling retrain may take place.

That is, shaft joint limited part 22 is fixed on the axle sleeve, makes the invariant position of tooth lock section 221, but shaft coupling 15 and dehydrating shaft 5 rotations, so the position of tooth lock section changes when stopping.

Thereupon, when switching to the washing state, mutual case of collision appears in the tip part that the tooth lock section 221 of the tip part of tooth lock section 151 of shaft joint 15 and shaft coupling limited part 22 might take place, and this situation is called the moment restrained condition to shaft coupling 15.

At this moment, the state that flank of tooth 161b on shaft joint 15 and the internal connector 16b upper end outer axial face also meshes, when the paddy of the tooth lock section of the tip of shaft coupling side tooth lock section and internal connector is met during rotation, the tooth lock section 151 of shaft coupling 15 and the tooth lock section 221 of shaft coupling limited part 22, under the thrust according to the buffer spring 11 that is provided with between the movable piece 9 of clutch mechanism and the inserted link 10, naturally engagement, and elimination is to the moment restrained condition of shaft coupling 15.

On the one hand, the flank of tooth that forms on wash shaft 4 bottoms, the wash shaft bottom forms four jiaos of axle apperances, and inner shaft coupling 16b is inner to be formed on the mesopore axle, and mesopore carries out axle again in conjunction with also harmless after forming four square ring shapes.

Though understand for example in the above-mentioned case that connecting rod 17 combines with the hinge that is combined into of pull bar 8, connecting rod 17 and combining of pull bar 8 be not hinge in conjunction with the time, the material of connecting rod uses resilient material just passable.

The following describes and be useful in clutch motor of the present invention.Figure 12 is the stereogram of clutch motor, and Figure 13 is the exploded perspective view of Figure 12, as shown in the figure, clutch motor 6 is that cam 600 directly is combined on the driving shaft 602, during driving shaft 602 rotations, and the rotation of cam 600 constant speed, on the position that driving shaft 602 stops, cam 600 stops too.

Clutch motor 6 of the present invention is after being used to change and improving the drainage motor structure that general draining valve drives usefulness, to use the clutch mechanism drive motor, and the formation of the Motor Drive portion of rotor and stator etc. is identical with existing drainage motor.

But, the drainage motor that is used for draining valve driving usefulness is by spring between cam and driving shaft, has slip to a certain degree, when closing drainage motor, cam has the quick-break effect of returning rapidly, and is opposite, clutch motor 6 of the present invention is the package assemblies that do not have slip between cam 600 and the driving shaft 602 fully, prevent quick-break, thereupon, possess in the angulation scope of the cam groove of cam 600 different with the cam of original drainage motor.

When clutch motor 6 driving shafts 602 of the present invention do not rotate, cam 600 can not rotate, the required moment of torsion of the rotation of driving shaft 602 is greater than the recuperability of backspring 14, when closing clutch motor 6, also can prevent 600 disconnected speed of cam, prevent the generation that recovers the conflict noise cause etc. rapidly of shaft coupling 15 and pull bar etc., can realize low noise during clutch operating.

And clutch motor 6 of the present invention is that cam 600 also stops on the position that stopping of driving shaft 602, when therefore carrying out long stagnation process, there is no need to keep electric power.

Figure 14 a to Figure 14 c is in order to illustrate when driving the clutch motor, the skeleton diagram of the action relationships between cam and the switch, cam when Figure 14 a is the washing mode support level and the state diagram of switch, Figure 14 b is transformed into the cam before the dehydration mode and the state diagram of switch, Figure 14 c be the initial stage during point cam and the state diagram of switch.Figure 15 is the time diagram of the action relationships between clutch motor of the present invention and cam and the switch, and is as follows with reference to the action relationships of these drawing explanation clutch motors and cam and switch.During the state that puts in the early stage cam 600 positions, switch 650 is kept closing state.At this moment, the state that put in the early stage cam 600 positions rushes at the state of initial stage point direction as the bar connecting axle 601 of Figure 14 c cam 600.

In order to wash, when this state incision moves the power communicating path, open and drive clutch motor 6, form the clockwise rotation of cam 600 thereupon.At this moment, the anglec of rotation of cam 600 reaches before the position from initial stage o'clock to 150 degree angles, and the protuberance 650a of switch 650 is on the cam groove face 600a, causes that switch 650 keeps closing state.

But cam 600 reaches 150 when spending since the anglec of rotation of initial stage point, the cam groove face 600a of the protuberance 650a disengaging cam 600 of switch 650, and open switch 650.

Cam 600 reaches 150 when spending since the anglec of rotation of initial stage point, and the tip part of the tip part of the tooth lock section 151 of shaft coupling 15 and the tooth lock section 221 of shaft coupling limited part 22 reaches intermeshing state.Thereafter, open under clutch motor 6 states, continue to reach as Figure 14 a cam 600 when initial stage point reaches 170 degree places, turn off clutch motor 6, as the reason of on the support level of cam 600, closing clutch motor 6, in order to form powershift more really to washing mode.

When dewatering after washing is finished, cam returns to initial stage point position.

For this reason, when the powershift of dehydration mode, after clutch motor 6 reopened, cam 600 rotated in the direction of the clock.At this moment, keep the switch 650 of open mode, when the cam 600 of rotation surpasses since the initial stage point during in the direction of the clock to the place (spending places to 158 in the direction of the clock from support level) of 328 degree angles, the protuberance 650a of switch 650 is in cam groove face 600a, thereupon, be converted to closing state (with reference to Figure 14 b) after switch 650 breaks away from contact.

After this, though switch 650 is transformed into closing state, according to the control of microcomputer, cam 600 reaches till the initial stage point, and clutch motor 6 is kept the state of opening, and cam 600 is in the initial stage during point, turns off clutch motor 6.

At this moment, close after the swap switch 650, till reaching initial stage point to cam 600, clutch motor 6 is kept the state of opening, and keeps the state that clutch motor 6 is opened, control according to the time, because of the cycle that revolving of clutch motor 6 turned around certain, the place that switch cuts out is till the initial stage point, the angle that reaches (promptly, 32 degree) divided by revolving the cycle of turning around, calculate the time of keeping open mode of clutch motor 6.

Be in the state of initial stage point as cam 600, not only eliminate the engagement of tooth lock section 151 with the tooth lock section 221 of shaft coupling limited part 22 of shaft coupling 15, and the upper side flank of tooth 150a and the lower side flank of tooth 150b of shaft coupling 15 interior axial planes, separately simultaneously with the internal connector 16b upper end outer axial face that is combined on the wash shaft 4 on flank of tooth 161b, and the flank of tooth of dehydrating shaft 5 bottoms is meshed, therefore, form wash shaft 4 and dehydrating shaft 5 and rotate the dehydration that causes simultaneously.

To before and after the switching of carrying out washing and dehydration mode, shaft coupling is eliminated the constraint process, describes with reference to Figure 16 and Figure 17 below.Figure 16 is the brushless direct current motor of washing during the initial stage and the time diagram of clutch motor action of washing machine, as shown in figure 16, and the process of elimination shaft coupling 15 constraints of carrying out before and after the switching from the dehydration mode to the washing mode.

After feedwater finishes, when carrying out washing, dehydrating shaft 5 that combines with shaft coupling 15 and the friendship bifurcated of internal connector 16b, the flank of tooth 150a/150b that causes axial planes in the shaft coupling 15 is subjected to from the opposite direction effect of the flank of tooth of the flank of tooth of dehydrating shaft 5 bottoms and internal connector 16b upper end, during the clutch motor-driven, the bound phenomenon of rising of shaft coupling 15 may take place.

After the washing feedwater finishes, open clutch motor 6, execution rises to shaft coupling 15 before the stage of washing mode position, in order to eliminate the constraint of shaft coupling 15, execution allows stage of the left and right counter-rotating of brushless direct current motor, with the bound phenomenon of the rising that prevents shaft coupling 15.

That is, drive in order to switch to washing mode before the clutch motor 6, brushless direct current motor 7 is by the left and right within a certain period of time counter-rotating of the anglec of rotation less than than washing the time.

And the driving of clutch motor 6 causes to be finished after the switching of washing mode, carries out before the washing, brushless direct current motor 7 within a certain period of time, after reversing with the shortest cycle, carry out washing, prevent to wash initial stage system's generation excess load with normal returing cycle.

The process of the constraint of the elimination shaft coupling 15 that carry out the switching front and back from the washing mode to the dehydration mode then, is described with reference to Figure 17.Figure 17 is that washing machine of the present invention is when finishing washing and the brushless direct current motor of dehydration during the initial stage and the time chart of the action of clutch motor, when switching to dehydration mode after washing finishes, hand over bifurcated according to shaft coupling 15 with the shaft coupling limited part 22 that combines, play mutually reciprocal pressure effect between the tooth lock section 151 of shaft coupling 15 and the shaft coupling limited part 22, the shaft coupling 15 affined phenomenon that descends may take place during the driving of clutch motor 6.

Thereupon, after washing is finished,, open clutch motor 6, carry out shaft coupling 15 and dropped to before the stage of dehydration mode position,, carry out the stage of the left and right counter-rotating of brushless direct current motor 7 in order to eliminate the constraint of shaft coupling 15 in order to switch to dehydration mode.

At this moment, when brushless direct current motor 7 carries out left and right inversion driving, the anglec of rotation of the control anglec of rotation during, left and right within a certain period of time counter-rotating less than washing.

And, finish after dehydration mode is switched, carry out before the dehydration, be brushless direct current motor 7 cycle with the shortest time, left and right within a certain period of time counter-rotating, form the combination of shaft coupling 15 and internal connector 16b more really after, carry out formal dehydration.

Below just the clutch Electric Machine Control process of washing and dehydration describe with reference to Figure 18,19.When Figure 18 is a switching washing mode of the present invention, when the flow chart of the control procedure of clutch motor, Figure 19 are switching dehydration mode of the present invention, the flow chart of the control procedure of clutch motor.

At first, with reference to Figure 18 the process of carrying out washing and controlling the clutch motor is described.After entering washing mode, for feedwater (the 1st stage) is carried out in washing.At this moment, clutch motor cam 600 is in the dissengaged positions of initial stage point, and switch 650 is closed conditions.

After feedwater finishes, start clutch motor 6 and rotating cam 600 (the 2nd stage), meanwhile computing time (the 3rd stage).

Judgement is since computing time, and clutch motor 6 switches 650 that cam 600 rotations cause are transformed into on-state, whether is reaching formation (the 4th stage) in the time of setting.

The switch 650 of clutch motor 6 is transformed into the conversion of on-state, and when forming within setting-up time, switch 650 begins to calculate the umber of pulse (the 5th stage) that takes place in the clutch motor 6 after connecting immediately.

Then, judge that whether the umber of pulse of calculating reaches the umber of pulse of having set (the 6th stage), when its result, umber of pulse reach the umber of pulse of having set, turns off clutch motor 6, and keeps cam position (the 7th stage).At this moment, cam 600 is in support level for carrying out washing mode.

On the one hand, judge that clutch motor 6 switches 650 that the cam rotation causes are transformed into on-state, whether reaching judged result in the stage (the 4th stage) that forms in the time of setting, surpass setting-up time, but when switch 650 is not connected, turning off clutch motor 6 (the 8th stage), is brushless direct current motor 7 cycle with the short time, left and right counter-rotating in the regular hour is carried out constraint and is eliminated action (the 9th stage).

At this moment, check the execution number of times (the 10th stage) of the constraint elimination action of brushless direct current motor 7, when the execution number of times of constraint elimination action does not reach the execution number of times of having set, carry out once more and start clutch motor 6, and the 2nd stage of driving cam 600 (the 11st stage), on the contrary, when the execution number of times of the constraint of brushless direct current motor 7 elimination action reaches the execution number of times of having set, show the wrong washing machine (the 12nd stage) that also stops.

After feedwater finishes,, when the frequency number of the rated voltage that applies on the clutch motor 6 is 50Hz or 60Hz, preferably be set in 5 seconds in order to be suitable for jointly from opening clutch motor 6 to the required time of state that clutch motor 6 switch inside 650 transform to out.Promptly, the 600 rotation required times of 1 circle of cam of clutch motor 6, it is the decelerating effect that is subjected to the speed reduction gearing of clutch motor 6 inside, frequency number is decided to be 12 seconds during for 50Hz, is decided to be 10 seconds during 60Hz, thereupon, till cam 600 was put clutch motor 6 internal switches 650 and is transformed to the place of state of pass from the initial stage, traveling angle is 150 degree, when frequency number is 50Hz and 60Hz, can be suitable for jointly and be set at 5 seconds.The control procedure of the clutch motor 6 when cam 600 revolves time of turning around also can be identical suitable dehydration.

The clutch Electric Machine Control process of carrying out dehydration is described with reference to Figure 19:

When washing finished, clutch motor 6 was closing state, and cam 600 is in the state of washing support level, and clutch motor 6 switch inside 650 are kept the state of connection.

Then, when switching to dehydration mode, the cam 600 of clutch motor 6 is under switch 650 on-states of support level, at first starts clutch motor 6, and rotating cam 600 (the 1st stage), meanwhile computing time (the 2nd stage).

In addition, continue to judge that since computing time, the switch 650 of the clutch motor 6 that the cam rotation causes is transformed into dissengaged positions, whether reaching formation (the 3rd stage) in the time of setting.

The switch 650 of clutch motor 6 is transformed into the conversion of dissengaged positions, when forming within setting-up time, after switch 650 cuts off, begins to recomputate the driving time (the 4th stage) of clutch motor immediately.

Judge the driving time that calculates clutch motor 6, whether reach the time (the 5th stage) of setting, its result when clutch motor 6 driving times after switch 650 cuts off reach setting-up time, turns off clutch motor 6, and cam is maintained initial stage point (the 6th stage).

During as above-mentioned control, judged result surpasses setting-up time in the 3rd stage, but when switch 650 is not connected, turn off clutch motor 6 (the 7th stage), then, carrying out brushless direct current motor 7 is cycle left and right counter-rotating in the regular hour with the short time, carries out constraint and eliminates and move (the 8th stage).

At this moment, check the execution number of times (the 9th stage) of the constraint elimination action of brushless direct current motor 7, when the execution number of times of constraint elimination action does not reach the execution number of times of having set, carry out once more and start clutch motor 6, and the 1st stage of driving cam 600 (the 10th stage), on the contrary, when the execution number of times of the constraint of brushless direct current motor 7 elimination action reaches the execution number of times of having set, show the wrong washing machine (the 11st stage) that also stops.

In order to switch to dehydration mode, from opening clutch motor 6 to required time of state that clutch motor 6 switch inside 650 transform to out, when the frequency number of the rated voltage that applies on the clutch motor 6 is 50Hz or 60Hz, for common being suitable for preferably was set in 7 seconds.

Promptly, the cam 1 required time of circle of 600 rotations of clutch motor 6 is the decelerating effects that are subjected to the speed reduction gearing of clutch motor 6 inside, frequency number is decided to be 12 seconds during for 50Hz, be decided to be 10 seconds during 60Hz, thereupon, cam 600 traveling angle that 6 internal switches 650 transform to till the place of state of pass from support level to the clutch motor is 158 degree, is set at 7 seconds for being suitable for jointly when frequency number is 50Hz and 60Hz.

Below with reference to Figure 20, illustrate take place to have a power failure or supply socket comes off, make when reopening power supply after the washing machine outage control clutch motor 6 initialized processes.

As above-mentioned clutch motor 6 initialization procedures, because: in order to switch to washing mode or dehydration mode, open clutch motor 6, and when cutting off the power supply in the way of cam rotation, cam 600 positions that clutch motor 6 occurs are not in the situation in the place of initial stage point or support level, after opening the power supply of washing machine once more in this state, when reopening clutch motor 6, the affined situation of shaft coupling may appear, do not detect and eliminate under the state of shaft coupling constraint, form 6 controls of clutch motor, the shaft coupling that causes can not be in the location status of normal washing mode or dehydration mode, can not normally wash or the stroke that dewaters.

So, power failure or supply socket take place to come off, cause when reopening power supply after washing machine cuts off the power supply, carry out initialization in order often to be in the cam of clutch motor 6 the initial stage point, can form the switching of washing mode or dehydration mode normally, its concrete clutch motor 6 initialization procedures are as follows.

Figure 20 is the flow chart of the initialization procedure of clutch motor, at first, recloses power supply (the 1st stage), connects under the state of power supply, checks the open/close state (the 2nd stage) of clutch motor internal switch.

Then, detect the result in the above-mentioned stage, the internal switch 650 of clutch motor 6 starts clutch motor 6 when on-state, and rotating cam 600 (the 3rd stage).Computing time when at this moment, starting the clutch motor (the 4th stage).

In addition, continue to judge that clutch motor 6 switches 650 that the cam rotation causes are transformed into dissengaged positions, whether reaching formation (the 5th stage) in the time of setting.

The switch 650 of clutch motor 6 is transformed into the conversion of dissengaged positions, when forming in setting-up time, begins to recomputate the driving time (the 6th stage) of clutch motor 6 after cutting off immediately.

Then, judge whether clutch motor 6 driving times that calculate reach the time (the 7th stage) of setting, its result is when clutch motor 6 driving times after switch 650 cuts off reach setting-up time, turn off clutch motor 6, and cam is maintained initial stage point (the 8th stage).

During as above-mentioned control, judged result surpasses setting-up time in the 5th stage, but switch 650 is not when connecting, turning off clutch motor 6 (the 9th stage), then, is brshless DC motor 7 cycle with the short time, left and right counter-rotating in the regular hour is carried out constraint and is eliminated action (the 10th stage).

At this moment, check the execution number of times (the 11st stage) of the constraint elimination action of brushless direct current motor 7, when the execution number of times of constraint elimination action does not reach the execution number of times of having set, carry out once more and start clutch motor 6, and the 3rd stage of driving cam 600 (the 12nd stage), on the contrary, when the execution number of times of the constraint of brushless direct current motor 7 elimination action reaches the execution number of times of having set, show the wrong washing machine (the 13rd stage) that also stops.

Detect the result in the 2nd stage, the internal switch 650 of clutch motor 6 starts clutch motor 6 and rotating cam 600 (the 14th stage) when dissengaged positions.Computing time (the 15th stage) when at this moment, starting clutch motor 6.

In addition, continue to judge from beginning to calculate beginning, clutch motor 6 switches 650 that the cam rotation causes are transformed into on-state, whether reaching formation (the 16th stage) in the time of setting, the switch 650 of clutch motor 6 is transformed into the conversion of on-state, when within setting-up time, forming, carry out above-mentioned the 3rd stage (the 17th stage).

Judged result surpasses setting-up time in the 16th stage, but switch 650 is turned off clutch motor 6 (the 18th stage) when not connecting, then, is brushless direct current motor 7 cycle with the short time, and left and right counter-rotating in the regular hour is carried out constraint and eliminated action (the 19th stage).

At this moment, check the execution number of times (the 20th stage) of the constraint elimination action of brushless direct current motor 7, when the execution number of times of constraint elimination action does not reach the execution number of times of setting, carry out once more and start clutch motor 6, and the 14th stage of driving cam 600 (the 21st stage), on the contrary, when the execution number of times of the constraint of brushless direct current motor 7 elimination action reaches the execution number of times of setting, show the wrong washing machine (the 22nd stage) that also stops.

Automatic washing machine of the present invention is by clutch motor 6 initialization procedures, no matter the situation that the power supply that power failure etc. cause closes can form the correct startup of clutch motor 6.

Claims

1. an automatic washing machine is characterized in that, comprising: the dehydration barrel (2) of rotation form is arranged in the outer bucket (1); Agitator (3) is arranged in the dehydration barrel (2), and is independent of in the dehydration barrel (2); Axle sleeve (20) supports dehydrating shaft (5), with the form of rotating freely, passes on rotary power to dehydration barrel (2); Wash shaft (4) is passed on rotary power to agitator (3); Stator (7a) energising, brshless DC motor (7) rotor (7b) is rotated; Clutch mechanism switches the power communicating path of brshless DC motor (7) to wash shaft (4) or dehydrating shaft (5), corresponding washing stroke or dehydration stroke.

2. according to the described automatic washing machine of claim 1, it is characterized in that clutch mechanism comprises: clutch motor (6) is arranged on outer bucket (1) bottom; Cam (600) is combined on the driving shaft (602) of clutch motor (6); Pull bar guide pipe (30) is fixed on the axle sleeve (20); When clutch motor (6) drove pull bar (8), rectilinear motion was carried out in the guiding of tension member guide pipe (30), had the tabular surface (802) that forms level on the groove (800) of inclined plane (801) and the lower end, inclined plane (801); Connector (17) is arranged between the cam (600) and pull bar (8) of clutch motor (6), when starting clutch motor (6), plays the effect that a pull bar (8) pulls to clutch motor (6) side; Backspring (14) one ends are fixed on pull bar guide pipe (30) leading section, and the other end is fixed on the hook (803) of pull bar (8) opposite side, plays the effect of pull bar (8) restoring force; During dehydration, the movable piece of hollow cylinder type (9) is attached on the groove (800) on inclined plane (801) of pull bar (8), and when switching to washing mode, (801) drop to tabular surface (802) bottom along the inclined plane; Carry out the lifting form along the inner gathering sill (900) of movable piece (9) and be provided with inserted link (10); Buffer spring (11) is between movable piece (9) and the inserted link (10); Shaft coupling limited part (22) is fixed on the bottom of axle sleeve (20), is provided with the tooth lock section (151) that forms along circumferencial direction; Movable rod (12) one side front end hinges are in conjunction with the bottom of inserted link (10), shaft coupling limited part (22) bottom is formed with bracing frame (220), bracing frame (220) bottom upper hinge is combined in a bit of movable rod (12) middle part, during inserted link (10) lifting, with the middle part of hinge combination a bit be the center, carry out oscillating motion; Along with the direction of reversing of movable rod (12), shaft coupling (15) switches the rotary power of brshless DC motor (7) along dehydrating shaft (5) direction lifting; Connector assembly (16) is communicated to wash shaft (4) to the revolving force of rotor (7b).

3. according to the described automatic washing machine of claim 2, it is characterized in that after above-mentioned clutch motor (6) slowed down by the inner deceleration tooth lock section that is provided with, tooth lock section motor was passed on power to the driving shaft that is connected cam (600) (602).

4. according to the described automatic washing machine of claim 3, it is characterized in that the required moment of torsion of the rotation of above-mentioned clutch motor (6) driving shaft (602) is greater than the recuperability of backspring (14), when closing clutch motor (6), cam (600) pauses in its position.

5. according to the described automatic washing machine of claim 2, it is characterized in that above-mentioned connector assembly (16) comprising: go up the aerial lug (16a) that connects resin with nut at rotor (7b); Aerial lug (16a) inner body injection molded, the flank of tooth (160b) of the flank engagement of formation and wash shaft (4) lower end on its interior axial plane, on the upper end outer axial face that the internal connector of metal material (16b) exposes to aerial lug (16a) outside, form the flank of tooth (161b) with shaft coupling (15) engagement.

6. according to the described automatic washing machine of claim 5, it is characterized in that for improving the intensity of internal connector (16b), internal connector (16b) uses aluminium alloy to make.

7. according to the described automatic washing machine of claim 5, it is characterized in that central part is provided with the flexible member fitting recess (162a) of annular above the said external connector (16a), assembling flexible member, i.e. rubber ring (18) in the fitting recess (162a).

8. according to the described automatic washing machine of claim 1, it is characterized in that, be pressed in conjunction with top axial region (5a) in the inboard, upper end of the bottom axial region (5b) that dehydrating shaft (5) internal diameter is big, the upper end of bottom axial region (5b) is the upper bearing (23) that has held support dehydrating shaft (5).

9. described according to Claim 8 automatic washing machine, it is characterized in that, reserve certain clearance between bottom axial region (5b) lower surface of above-mentioned dehydrating shaft (5) and internal connector (16b) upper end, for the packing that can prevent washing machine falls or the bending of the axle that causes during other impact, internal connector (16b) contacts with the lower surface of the bottom axial region (5b) of dehydrating shaft (5) is first.

10. according to the described automatic washing machine of claim 1, it is characterized in that, the lower end of above-mentioned wash shaft (4) forms platform (400), formed the platform corresponding on the interior axial plane of internal connector (16b) with it, when connecting screw makes internal connector (16b) be combined in wash shaft (4) bottom, can limit link position.

11., it is characterized in that the formation in the gap between internal connector (16b) and the dehydrating shaft (5) is less than wash shaft (4) bottom to the ball bearing (51) of radial direction support and the gap between the C-ring (52) according to the described automatic washing machine of claim 10.

12., it is characterized in that the upper end of above-mentioned wash shaft (4) is provided with the seal member (53) that prevents moisture penetration between wash shaft (4) and dehydrating shaft (5) according to claim 1 or 10 described automatic washing machines.

13., it is characterized in that the inboard of above-mentioned seal member (53) is the reliability of guaranteeing to seal according to the described automatic washing machine of claim 12, form the sealing lip (530) more than 3 at least.

14. according to the described automatic washing machine of claim 1, it is characterized in that, support upper bearing (23) top of dehydrating shaft (5) to be provided with the seal member (54) that seals between dehydrating shaft (5) and the axle sleeve (20), reliability for guaranteeing to seal on seal member (54) inboard, at least form the sealing lip (540a) more than 4 sections, form the sealing lip (540b) more than at least 3 sections on the outside.

15. according to the described automatic washing machine of claim 2, it is characterized in that, be located on the upper end outer axial face of the inboard inserted link (10) of movable piece (9) buffer spring (11) is arranged, inserted link (10) and movable piece (9) are when assembling, be extruded into top according to movable piece (9) under the recuperability effect of buffer spring (11), form on movable piece (9) outer axial face one side and hang with the movable piece sheet (100) that prevents to come off on axial long guiding hole (901) bottom, prevent that inserted link (10) breaks away from from movable piece (9).

16. according to claim 2 or 15 described automatic washing machines, it is characterized in that, form length on the outer axial face of movable piece (9) along axial guide post (902), movable piece (12) is filled in the guide part medial surface and guide post (902) engagement of pull bar guide pipe (30), and formation can make the straight-line gathering sill of movable piece (9) (30a-1).

17. according to claim 2 or 15 described automatic washing machines, it is characterized in that, corresponding inclined plane (801) with pull bar (8), the upper end of above-mentioned movable piece (9) forms, and pull bar (8) is when moving horizontally, and movable piece (9) carries out elevating movement along vertical direction.

18., it is characterized in that an end of above-mentioned backspring (14) forms annular shape according to the described automatic washing machine of claim 2, can be suspended on the hook (803) of pull bar (8); The diameter of the winding of the other end can be suspended on pull bar guide pipe (30) rearward end greater than the other parts diameter, and the fixed position.

19. according to the described automatic washing machine of claim 2, it is characterized in that, above-mentioned connecting rod (17) one ends are combined in cam (600), other end hinge is combined in pull bar (8), when the recuperability of backspring (14) is done the time spent, the downside of an end of the pull bar (8) that combines with connecting rod (17) forms and limits pull bar (8) and stop hook (805) to position that pull bar guide pipe (30) inserts.

20., it is characterized in that compression spring (40) is arranged between the upper side of above-mentioned shaft coupling (15) and the lower side bearing according to the described automatic washing machine of claim 2, when dehydration mode is switched, shaft coupling (15) pushes away to the bottom direction.

21. according to the described automatic washing machine of claim 2, it is characterized in that, shaft coupling limited part (22) lateral surface is provided with protrusion (154), protrusion (154) is between the bracing frame (220) of inserted link (10) and shaft coupling limited part (22), possess in the Y-shaped movable rod (12) of the straight below of protrusion (154) and cross the connecting portion (12a) that connects two side levers, possessing dehydration between protrusion (154) and the connecting portion (12a), the time to give movable rod (12) be the center with fixed axis (12b), the extension spring (13) of the revolving force that reverses by the hour hands direction.

22. according to the described automatic washing machine of claim 2, it is characterized in that, shaft coupling (15) is located on the cylinder body upper end, along the radial direction expansion flange part (152) is arranged, near flange part (152) upper edge, form the tooth lock section (151) cooperate with the tooth lock section (221) of shaft coupling limited part (22) along circumferencial direction, the flank of tooth (150a/150b) that has the flank of tooth (161b) on internal connector (16b) the upper end outer axial face with the flank of tooth of formation dehydrating shaft (5) and connector assembly (16) to be consistent on the interior axial plane.

23. according to the described automatic washing machine of claim 22, it is characterized in that, be formed on the tooth pitch of the flank of tooth (150a/150b) on the axial plane in the body of shaft coupling (15), after shaft coupling (15) descends fully, upper end position is a benchmark when meshing with internal connector (16b), and the upper side flank of tooth (150a) and the lower side flank of tooth (150b) form different modulus mutually.

24. according to the described automatic washing machine of claim 23, it is characterized in that, the tooth pitch of the flank of tooth (150a) that forms on the axial plane in the body of above-mentioned shaft coupling (15), the internal connector upper end position during with engagement is a benchmark, the flank of tooth of its underpart (150b) forms bigger modulus.

25., it is characterized in that modulus ratio the best of the flank of tooth (150b) that the flank of tooth (150a) that axial plane top forms in the body of above-mentioned shaft coupling (15) and bottom form is 1: 1.5 according to claim 23 or 24 described automatic washing machines.

26. according to claim 23 or 24 described automatic washing machines, it is characterized in that, be formed in the flank of tooth (150a/150b) of interior axial plane of shaft coupling (15), when forming bigger modulus with the flank of tooth (150b) of the part of internal connector (16b) engagement, the bottom that is in the big flank of tooth (150b) of the tooth pitch of lower side is handled circular, forms with the engagement of the flank of tooth (161b) of internal connector (16b) easily and separates.

27., it is characterized in that the lower side of the above-mentioned lower side flank of tooth (150b) forms and the flank of tooth (161b) of internal connector (16b) carries out clutch, carries out the involute profile surface treatment according to the described automatic washing machine of claim 26.

28. according to claim 23 or 24 described automatic washing machines, it is characterized in that, the place that each paddy following and the lower side flank of tooth (150b) of the upper side flank of tooth (150a) that forms on the axial plane in the body of above-mentioned shaft coupling (15) contacts, carry out circle and handle, change and increase the ability of bearing twisting stress in order to shorten rapid end face.

29. according to the described automatic washing machine of claim 22, it is characterized in that, be provided with most individual protrusion (154) along circumferencial direction on the body lower surface of above-mentioned shaft coupling (15).

30., it is characterized in that the flexible member of the flexible member fitting recess (162a) of said external connector (16a) is rubber ring (18) according to the described automatic washing machine of claim 7.

31. according to the described automatic washing machine of claim 30, it is characterized in that, form the cushion (180) that its internal diameter is slightly less than the outside dimension of internal connector (16b) on rubber ring (18) bottom, inside edge, the radial direction outside of the cushion of bottom surfaces (180) forms the groove (181) for the annular in the distortion leeway of giving cushion (180) radial direction, and groove (181) is to form by isolating along radial direction.

32. according to the described automatic washing machine of claim 31, it is characterized in that, contacted position, shaft coupling (15) lower surface of the upper side of above-mentioned rubber ring (18) forms groove (181), and in order to prevent to be close to and to drive below the shaft coupling (15) phenomenon of rubber ring (18), the while is in order to add the cushions.

33., it is characterized in that the anglec of rotation constant speed rotation that the cam (600) of above-mentioned clutch motor (6) is identical with driving shaft (602) is gone up directly connection at driving shaft (602) according to claim 2 or 3 described automatic washing machines.

34. according to the described automatic washing machine of claim 33, it is characterized in that, form the cam groove (181) that sets angular range on the outer axial face of above-mentioned cam (600).

35., it is characterized in that the angulation scope of above-mentioned cam groove (181) is that 180 degree are to 210 degree according to the described automatic washing machine of claim 34.

36. the control method of an automatic washing machine is characterized in that, comprising: be connected the rotor of wash shaft and center on the brushless direct current motor that the rotor form is arranged on the stator formation washing machine drive source in its outside; The clutch motor rises shaft coupling or descends and the position when delivering to washing and dehydration; During the clutch motor-driven, shaft coupling interlock is risen or is descended, and only passes on power to wash shaft during washing, passes on power to wash shaft and the dehydration barrel that is arranged on its outside simultaneously during dehydration; After the washing feedwater finishes, start the clutch motor, execution rose to shaft coupling before the stage of washing mode position, in order to eliminate the constraint of shaft coupling, carry out the stage of the left and right counter-rotating of brushless direct current motor, according to the dehydrating shaft of shaft coupling engagement and the friendship bifurcated of internal connector, the flank of tooth of the inner cylinder of shaft coupling is subjected to the mutual rightabout surface pressure effect from the flank of tooth of the flank of tooth of dehydrating shaft bottom and internal connector upper end, when preventing the clutch motor-driven, the phenomenon that the constraint shaft coupling rises appears.

37. control method according to the described automatic washing machine of claim 36, it is characterized in that, switch to washing mode according to the driving of clutch motor after, before washing is carried out, appending execution is brushless direct current motor the cycle with the short time, the left and right counter-rotating stage in the regular hour.

38. the control method of an automatic washing machine is characterized in that, comprising: be connected the rotor of wash shaft and center on the brushless direct current motor that the rotor form is arranged on the stator formation washing machine drive source in its outside; The clutch motor rises shaft coupling or descends, and the position when delivering to washing and dehydration; During the driving of clutch motor, the shaft coupling interlock is risen or is descended, and only passes on power to wash shaft during washing, passes on power to wash shaft and the dehydration barrel that is arranged on its outside simultaneously during dehydration; Under the effect of clutch motor, when shaft coupling rises back execution washing mode, prevent the shaft coupling limited part of shaft coupling rotation; After washing finishes, in order to switch to dehydration mode, start the clutch motor, execution dropped to shaft coupling before the stage of dehydration mode position, in order to eliminate the constraint of shaft coupling, carry out the stage of the left and right counter-rotating of brushless direct current motor, according to the staggering mutually of the shaft coupling limited part of shaft coupling engagement, between the tooth lock section of shaft coupling and the shaft coupling limited part under the mutual rightabout surface pressure effect, the phenomenon of the decline of constraint shaft coupling appears when preventing the clutch motor-driven.

39. the control method according to the described automatic washing machine of claim 38 is characterized in that, when above-mentioned brushless direct current motor carries out left and right inversion driving, and the anglec of rotation of the control anglec of rotation during less than washing.

40. control method according to the described automatic washing machine of claim 38, it is characterized in that, driving according to the clutch motor, after switching to dehydration mode, carry out before the dehydration, can form more really between the shaft coupling and the internal connector flank of tooth tooth and, append that to carry out brushless direct current motor be the cycle with the shortest time, within a certain period of time the stage of left and right counter-rotating.

41. the control method of an automatic washing machine is characterized in that, comprising: be connected the rotor of wash shaft and center on the brushless direct current motor that the rotor form is arranged on the stator formation washing machine drive source in its outside; The clutch motor rises shaft coupling or descends, and the position when delivering to washing and dehydration; During the clutch motor-driven, shaft coupling interlock is risen or is descended, and only passes on power to wash shaft during washing, passes on power to wash shaft and the dehydration barrel that is arranged on its outside simultaneously during dehydration, is the 1st stage that feedwater is carried out in washing; After carrying out feedwater, the cam of clutch motor is in the dissengaged positions of initial stage point, the 2nd stage of starting clutch motor and rotating cam; The 3rd stage of computing time when starting the clutch motor; Judge whether the clutch motor that the cam rotation causes is transformed into on-state, reach the 4th stage that forms in the time of setting; Judged result in the 4th stage, when the conversion that is transformed into on-state forms within setting-up time, the 5th stage that begins to calculate the umber of pulse that takes place in the clutch motor immediately after connecting; Judge whether the umber of pulse of the calculating in the 5th stage of execution reaches the 6th stage of the umber of pulse of having set; When judged result in the 6th stage, umber of pulse reach the umber of pulse of having set, turn off the clutch motor, and keep the 7th stage of cam position; Though judged result surpasses setting-up time in the 4th stage, when not connecting, turns off the 8th stage of clutch motor; After carrying out for the 8th stage, be cycle left and right counter-rotating in the regular hour with the short time, carry out the 9th stage that action is eliminated in constraint brushless direct current motor; The 10th stage that the execution number of times of action is eliminated in the constraint of inspection brushless direct current motor; Check result in the 10th stage when the execution number of times of the constraint elimination action of brushless direct current motor does not reach the execution number of times of having set, is carried out once more and is started the clutch motor, and the 11st stage in the 2nd stage of driving cam; When the execution number of times that check result in the 10th stage, the constraint of brushless direct current motor are eliminated action reaches the execution number of times of having set, show wrong and stop the 12nd stage of washing machine.

42. control method according to the described automatic washing machine of claim 41, it is characterized in that, after feedwater finishes, from opening the clutch motor, switch change-over to the clutch motor internal, the time required to the state of opening is, when the frequency number of the rated voltage that applies on the clutch motor is 50Hz or 60Hz, for common being suitable for was set in 5 seconds.

43. the control method of an automatic washing machine is characterized in that, comprising: be connected the rotor of wash shaft and center on the brushless direct current motor that the rotor form is arranged on the stator formation washing machine drive source in its outside; The clutch motor rises shaft coupling or descends and the position when delivering to washing and dehydration; During the clutch motor-driven, shaft coupling interlock is risen or is descended, and only passes on power to wash shaft during washing, passes on power to wash shaft and the dehydration barrel that is arranged on its outside simultaneously during dehydration; The cam of clutch motor is in the on-state of support level, starts the clutch motor, and the 1st stage of rotating cam; The 2nd stage of computing time when starting the clutch motor; Judge whether the clutch motor that the cam rotation causes is transformed into dissengaged positions, reaching the 3rd stage that forms in the time of setting; Judged result in the 3rd stage is transformed into the conversion of dissengaged positions, when forming within setting-up time, after the cut-out, begins to recomputate the 4th stage of the driving time of clutch motor immediately; Judge whether the driving time of the calculating in the 4th stage of execution reaches the 5th stage of the time of setting; Judged result in the 5th stage, the clutch motor-driven time after cutting off is turned off the clutch motor when reaching setting-up time, and cam is maintained the 6th stage of initial stage point; Though judged result surpasses setting-up time in the 3rd stage, when not connecting, turns off the 7th stage of clutch motor; After carrying out for the 7th stage, be cycle left and right counter-rotating in the regular hour with the short time, carry out the 8th stage that action is eliminated in constraint brushless direct current motor; The 9th stage that the execution number of times of action is eliminated in the constraint of inspection brushless direct current motor; Check result in the 9th stage when the execution number of times of the constraint elimination action of brushless direct current motor does not reach the execution number of times of having set, is carried out once more and is started the clutch motor, and the 10th stage in the 1st stage of driving cam; When the execution number of times that check result in the 9th stage, the constraint of brushless direct current motor are eliminated action reaches the execution number of times of having set, show wrong and stop the 11st stage of washing machine.

44. control method according to the described automatic washing machine of claim 43, it is characterized in that, in order to switch to dehydration mode, from opening the clutch motor, switch change-over to the clutch motor internal, the time required to the state of opening is, when the frequency number of the rated voltage that applies on the clutch motor is 50Hz or 60Hz, for common being suitable for was set in 7 seconds.

45. the control method of an automatic washing machine is characterized in that, comprising: be connected the rotor of wash shaft and center on the brushless direct current motor that the rotor form is arranged on the stator formation washing machine drive source in its outside; The clutch motor rises shaft coupling or descends and the position when delivering to washing and dehydration; During the clutch motor-driven, shaft coupling interlock is risen or is descended, and only passes on power to wash shaft during washing, passes on power to wash shaft and the dehydration barrel that is arranged on its outside simultaneously during dehydration; Connect the 1st stage of power supply; Detect under the state of connecting power supply, check the 2nd stage of the open/close state of clutch motor internal switch; Detect the result in the 2nd stage, the internal switch of clutch motor starts the 3rd stage of clutch motor and rotating cam when on-state; The 4th stage of computing time when starting the clutch motor; Judge that clutch motor that cam rotation causes is transformed into dissengaged positions and whether is reaching the 5th stage that forms in the time of setting; Judged result in the 5th stage when the conversion that is transformed into dissengaged positions forms, begins to recomputate the 6th stage of the driving time of clutch motor immediately after cutting off within setting-up time; Judge whether the driving time of the calculating in the 6th stage of execution reaches the 7th stage of the time of setting; Judged result in the 7th stage, the clutch motor-driven time after cutting off is when reaching setting-up time, turns off the clutch motor and cam maintained the 8th stage of initial stage point; Though judged result surpasses setting-up time in the 3rd stage, when not connecting, turns off the 9th stage of clutch motor; After carrying out for the 9th stage, be cycle left and right counter-rotating in the regular hour with the short time, carry out the 10th stage that action is eliminated in constraint brushless direct current motor; The 11st stage that the execution number of times of action is eliminated in the constraint of inspection brushless direct current motor; Check result in the 11st stage when the execution number of times of the constraint elimination action of brushless direct current motor does not reach the execution number of times of having set, is carried out the 12nd stage in the 3rd stage of starting clutch motor and driving cam once more; When the execution number of times that check result in the 11st stage, the constraint of brushless direct current motor are eliminated action reaches the execution number of times of having set, show wrong and stop the 13rd stage of washing machine; Detect the result in the 2nd stage, the internal switch of clutch motor starts the 14th stage of clutch motor and rotating cam when dissengaged positions; The 15th stage of computing time when starting the clutch motor; Judge that clutch motor that cam rotation causes is transformed into on-state and whether is reaching the 16th stage that forms in the time of setting; Judged result in the 16th stage when the conversion that is transformed into on-state forms, is carried out the 17th stage in the 3rd stage within setting-up time; Though judged result surpasses setting-up time in the 16th stage, when not connecting, turns off the 18th stage of clutch motor; After carrying out for the 18th stage, be cycle left and right counter-rotating in the regular hour with the short time, carry out the 19th stage that action is eliminated in constraint brushless direct current motor; The 20th stage that the execution number of times of action is eliminated in the constraint of inspection brushless direct current motor; Check result in the 20th stage when the execution number of times of the constraint elimination action of brushless direct current motor does not reach the execution number of times of having set, is carried out the 21st stage in the 14th stage of starting clutch motor and driving cam once more; When the execution number of times that check result in the 20th stage, the constraint of brushless direct current motor are eliminated action reaches the execution number of times of having set, show wrong and stop the 22nd stage of washing machine.

46. control method according to the described automatic washing machine of claim 45, it is characterized in that, rotate according to cam, the switch change-over of judging the clutch motor is 5 seconds to the setting-up time in the 5th the stage whether state that closes forms in the time of setting, according to cam rotation, the switch change-over of judging the clutch motor is 7 seconds to the setting-up time in the 16th the stage whether state of opening forms in the time of setting.