KR100433024B1 - Full automatic washing machine - Google Patents

Abstract

The present invention is configured to selectively attach an induction motor or a brushless DC motor by using a reversible rotary motor of a driving device for driving a washing-and-dehydrating tank and a stirring vane together with an electric motor housing. Can produce.

Description

Fully automatic washing machine {FULL AUTOMATIC WASHING MACHINE}

The present invention relates to a fully automatic washing machine.

Generally, a fully automatic washing machine is rotatably installed in the outer tank supported by suspension by a dustproof support device such as a suspension rod in the frame member, and a stirring blade is rotatably installed in the bottom of the washing and dewatering tank. In addition, the drive unit attached to the outer side of the bottom of the outer tub is configured to rotationally drive the washing and dewatering tank and the stirring vane.

The driving device transmits the rotation of the electric motor to the stirring vane via the reduction gear mechanism and washes the stirring vane by rotating forward and reverse at low speed, or transfers the washing and dehydrating tank to the washing and dehydrating tank via the clutch mechanism to rotate the washing and dehydrating tank at high speed in one direction. It is to drive dehydration.

Fully automatic washing machines require a variety of washing methods according to the laundry, and in general, it is possible to change the amount of washing or the stirring force by the stirring blades according to the amount, quality or degree of contamination of the laundry. In recent years, there has also been proposed a centrifugal washing method in which a washing and dewatering tank is rotated in one direction and washed.

In order to respond to different needs of a user, a fully automatic washing machine needs to provide a plurality of models having different functions. However, the production of a plurality of models is generally higher in price compared to the production of short-term species.

Accordingly, a first object of the present invention is to enable the production of a plurality of full-automatic washing machines relatively inexpensively.

In the drive device, the reduction gear mechanism, the clutch mechanism and the electric motor are arranged in a coaxial arrangement so as to realize unitization. However, when the induction motor is used as the electric motor, an air gap between the stator iron core and the rotor iron core is provided. Since high dimensional accuracy is required, if the structure of the rotor shaft is firmly supported from both sides, the dimension in the axial direction is increased by the support member or the like, making it difficult to install in the lower space of the outer tub.

It is a second object of the present invention to provide a compact unit for a driving device for driving a washing-and-dehydrating tank and a stirring blade. Specifically, for example, by supporting the rotor core of the electric motor with high accuracy by an input shaft protruding from the reduction gear mechanism, it is possible to miniaturize the drive device incorporating the induction motor. Further, by studying the configuration of the clutch mechanism, it is possible to reduce the dimensional increase in the axial direction of the drive device.

1 is a longitudinal side view showing an embodiment of a basic configuration of a fully automatic washing machine of the present invention.

Fig. 2 is a longitudinal sectional side view showing a specific configuration of a fully automatic washing machine of the present invention, showing a part of which is developed.

Fig. 3 is a longitudinal side view showing the whole of the drive device in the fully automatic washing machine of the present invention.

Figure 4 is a longitudinal side view of a drive rotary shaft system in the drive device of the fully automatic washing machine of the present invention.

Fig. 5 is a longitudinal side view showing a combined state of an outer output shaft portion and an inner output shaft portion in the driving apparatus of the automatic washing machine of the present invention.

Fig. 6 is a longitudinal side view showing the output shaft portion in which the gear case is combined with the output shaft portion in which the outer output shaft portion and the inner output shaft portion are combined in the driving apparatus of the automatic washing machine of the present invention.

Fig. 7 is a longitudinal side view showing an engaged machining state of an assembly in which a gear case is combined with an output shaft portion in a drive device for a fully automatic washing machine of the present invention.

8 is a longitudinal side view showing an input shaft portion in which an outer input shaft portion and an inner input shaft portion are combined in the driving apparatus of the automatic washing machine of the present invention.

Fig. 9 is a longitudinal side view showing a finish working state of a drive rotary shaft system in the drive device of the automatic washing machine of the present invention.

Fig. 10 shows the rotor iron core structure of the electric motor in the drive system of the fully automatic washing machine of the present invention, (a) is a top view, (b) a partial longitudinal side view, and (c) a bottom view.

Fig. 11 shows a structure in which a die-cast basket-shaped secondary conductor and a cooling vane are die-cast to a rotor iron core of an electric motor in the driving apparatus of a fully automatic washing machine of the present invention. Some longitudinal side views, (c) bottom view.

Fig. 12 is an external view of the rotor of the electric motor in the driving apparatus of the automatic washing machine of the present invention, (a) is a top view, (b) is a longitudinal side view, and (c) is a bottom view.

Fig. 13 is a partial longitudinal side view showing a state in which the engagement engagement of the engagement clutch mechanism is released in the drive device of the fully automatic washing machine of the present invention.

Fig. 14 is a longitudinal side view showing an engagement state of an engagement clutch mechanism in a drive system of a fully automatic washing machine of the present invention.

Fig. 15 is a sectional view of an engagement coupling portion of a sliding element and an electromagnetic iron core for engaging and fixing an outer rotary shaft system of an engagement clutch mechanism in a drive device of a fully automatic washing machine of the present invention.

Figure 16 is a block diagram showing the electrical configuration of a fully automatic washing machine of the present invention.

Fig. 17 is a control process flowchart executed by the microcomputer in the basic laundry dehydration mode in the fully automatic washing machine of the present invention.

18 is a longitudinal side view of a drive device using a brushless direct current motor in the fully automatic washing machine of the present invention.

<Description of Symbols for Main Parts of the Present Invention>

2: washing and dehydrating tank

4: stirring blade

5: outer bird

6: driving device

7: attachment base

32a, 32b: deceleration mechanism outer case

34: drive rotary shaft

35: outer rotating shaft system

36: inner rotating shaft system

40a, 40b: ball bearing

42: attachment screw

43: motor housing

44: stator

44a: stator iron core

45: rotor

47: engagement clutch mechanism

47a: electronic coil

47b: Electronic iron core

47c: sliding element

47d: coil spring

47e: Adsorber

47f: interlocking projection

A first feature of the present invention is a motor in which a reduction gear mechanism, a clutch mechanism and an electric motor are arranged in series in a vertical direction centering on a drive rotation shaft of a washing-and-dehydrating tank and a stirring blade, and the motor is attached to an outer case of the reduction gear mechanism. An induction motor or a brushless DC motor is selectively attached to the housing and a rotating shaft protruding into the motor housing.

A second feature of the present invention resides in that the inner input shaft portion for attaching the rotor of the electric motor is attached to the inner side of the outer input shaft portion by a rolling bearing press-fitting the outer ring to support the rotor one side.

1 is a longitudinal side view showing an outline of a basic configuration of a fully automatic washing machine of the present invention. Reference numeral 1 is a frame member containing an internal mechanism. Reference numeral 2 denotes a washing and dewatering tank, and includes a fluid balancer 3 at an upper edge portion thereof, and a stirring blade 4 rotatably inside the bottom portion thereof. Reference numeral 5 denotes an outer tub that rotatably encloses the washing and dewatering tank 2, and attaches the driving device 6 to the outer side of the bottom part by an attachment base 7 made of a steel plate. Suspension support is carried out by the dustproof support device 8 from four corners of an upper end part. The internal structure of the drive apparatus 6 is mentioned later.

The top cover 9 provided with the clothes input opening 9a is fitted to the edge of the opening end so as to cover the upper opening of the frame member 1, and together with the front panel 10 and the rear panel 11, the attachment screw ( (Not shown) to the frame member 1.

The front panel box 12 formed between the top cover 9 and the front panel 10 includes a power switch 13, an input switch group 14, a display element group 15, and a water level in the outer tub 5. The water level sensor 16 and the control unit 17 which generate a water level signal are incorporated.

In the rear panel box 18 formed between the upper cover 9 and the rear panel 11, the water inlet side is connected to the faucet 19, and the water outlet side is connected to the spout 20. The feed water solenoid valve 21 is incorporated. The water inlet 20 is formed to be waterproof toward the opening of the washing and dehydrating tank (2).

The clothes input opening 9a formed in the top cover 9 is covered by the cover 22 so as to be openable and closeable.

The drain 5a formed at the bottom of the outer tub 5 is connected to the drain hose 24 via the drain solenoid valve 23, and the air trap 5b is connected to the water level sensor 16 via the air tube 25. Connect to

A base 27 made of synthetic resin having a leg 26 attached to four corners is attached to the lower edge of the frame member 1.

Fig. 2 is a longitudinal side view showing a specific configuration of this automatic washing machine, and part of it is shown in an expanded form. Since this automatic washing machine is specifically the same structure as the fully automatic washing machine shown in FIG. 1, the same code | symbol is attached | subjected to the component corresponding to the component of the fully automatic washing machine shown in FIG. 1, and the overlapping description is abbreviate | omitted.

3 to 15 show the internal structure of the drive device 6 in detail. FIG. 3 is a longitudinal side view showing the whole of the drive device, and FIG. 4 is a longitudinal side view of the drive rotary shaft system.

5 to 9 show the assembly process of the drive rotary shaft system, FIG. 5 is a longitudinal side view showing the combined state of the outer output shaft portion and the inner output shaft portion, and FIG. 6 is an output shaft portion combining the outer output shaft portion and the inner output shaft portion. Fig. 7 is a longitudinal side view showing the output shaft portion in which the gear case is combined, and Fig. 7 is a longitudinal side view showing the coupling machining state of the assembly in which the gear case is combined in the output shaft portion. Fig. 9 is a longitudinal side view showing the finish working state of the drive rotary shaft system.

10 to 12 show the detailed structure of the rotor 45. Fig. 10 shows the rotor core structure, where (a) is a top view, (b) is a partial longitudinal side view, and (c) is a bottom view. Fig. 11 shows a structure in which a cage secondary conductor and cooling blades are die cast formed on a rotor iron core, (a) is a top view, (b) is a partial longitudinal side view, and (c) is a bottom view. Fig. 12 is an external view of the rotor, (a) is a top view, (b) is a longitudinal side view, and (c) is a bottom view.

13 to 15 show the detailed structure of the engagement clutch mechanism 47. Fig. 13 is a partial longitudinal side view showing the disengaged state, Fig. 14 is a longitudinal side view showing the engaged state, and Fig. 15 is a sliding element and an electronic device for hanging and fixing the outer rotary shaft 35; Sectional view of the engagement portion of the iron core.

This drive device 6 is a configuration in which the drive gears of the washing and dewatering tank 2 and the stirring vane 4 are axially arranged in a concentric series with the reduction gear mechanism, the engagement clutch mechanism and the reversible rotary motor in the vertical direction. to be.

The reduction gear mechanism is fitted inside and outside by the ball bearings 33a and 33b inside the two reduction gear mechanism outer casings 32a and 32b, which are fitted to the attachment base 7 by fitting screws 31 with fitting coupling flanges. The drive shaft system 34 of the structure is supported.

As shown in detail in FIG. 4, this drive rotary shaft system 34 includes a hollow outer rotary shaft system 35 and an inner rotary shaft system 36 disposed in the hollow.

The outer rotating shaft system 35 is a rotating shaft system which directly transfers the rotation of the electric motor to the washing and dehydrating tank 2 to drive the washing and dehydrating tank 2, and is drawn outward of the outer case 32a to receive the outer tank 5. The outer output shaft portion 35a for coupling the washing and dewatering tank 2 to the front end of the through hole), and the teeth portion 35b for engaging the clutch mechanism engaged with the tubular portion extending outwardly of the outer case 32b. An outer input shaft portion 35d having a flange 35c formed at an inner end thereof, and a gear case portion 35e positioned in the middle thereof to accommodate the planetary gear reduction mechanism. An annular gear 35f constituting a part of the planetary gear reduction mechanism is fixedly attached to the inner circumference of the gear case part 35e.

The inner rotating shaft system 36 installed inside the outer rotating shaft system 35 is a rotating shaft system which decelerates the rotation of the electric motor and transmits the stirring blade 4 to the stirring blade 4 to drive the stirring blade 4. The sealing part 37, the metal bearings 38a and 38b, and the grip fixing wheel (push nut) 39 are installed in the 35a state in a watertight seal and a fall prevention state, and are washed from the front end of the outer output shaft part 35a. The attachment screw 36a is formed in the outer end portion which protrudes into the dewatering tank 2 and to which the stirring blade 4 is attached, and protrudes into the gear case portion 35e from the inner end and engages with the planetary gear reduction mechanism. An inner output shaft portion 36c having a toothed portion 36b formed at an end portion thereof, and supported by ball bearings 40a and 40b inside the outer input shaft portion 35d, from an outer end portion of the outer input shaft portion 35d. Motor rotor pinches on the outer end part which protrudes in one side support state 36 g of internal input shaft parts and gear case part 35e in which the attachment part 36d and the fixing screw 36e were formed, and the sun gear 36f was formed in the inner end side part extended in the gear case part 35e. Meteor which is journaled to the carrier 36h fitted to the toothed portion 36b of the inner output shaft portion 36c and engaged with the gears 35f and 36f to transmit the decelerating rotational force to the carrier 36h. And a gear 36i.

The ball bearings 40a and 40b are attached to the outer input shaft portion 35d in the outer ring press-fitted state in order to support the inner input shaft portion 36g serving as the rotor shaft of the motor with high accuracy. Since the inner input shaft portion 36g supports the rotor of the induction motor in one side supporting state as will be described later, the bearing supporting the inner input shaft portion 36g has a small loss and supports a large load in the radial direction. Representative ball bearings 40a and 40b of rolling bearings are used, but may be replaced by roller bearings.

Such a drive rotary shaft 34 is formed by cold press working a steel plate obtained by galvanizing the component parts of the outer rotary shaft 35. First, as shown in Fig. 5, the inner output shaft portion 36c is inserted into the outer output shaft portion 35a and supported by the metal bearings 38a and 38b, and the grip portion is brought into a watertight state by the sealing portion 37. The fixed shaft 39 constitutes the output shaft portion temporarily pressed. Next, as shown in FIG. 6, the gear case part 35e is attached to the inner end of the outer output shaft part 35a and temporarily assembled.

Thus, the temporary assembly which fitted the gear case part 35e to the outer output shaft part 35a is supported so that it may be surrounded by the dice | dies 101, 102, 103 attached to the press working machine, as shown in FIG. The flow of the fitting portion between the outer output shaft portion 35a and the gear case portion 35e is processed by pushing the grip fixing wheel 39 by the punch 104 and simultaneously pushing the end portion of the outer output shaft portion 35a to widen it. To combine.

On the other hand, as shown in FIG. 8, as shown in FIG. 8, the inner input shaft part 36g is assembled by the ball bearing 40a, 40b in the outer input shaft part 35d.

As shown in Fig. 9, the fitting assembly of the outer output shaft portion 35a and the gear case portion 35e is metal flow-coupled to support the partial assembly supported by the dies 101 and 102 mounted on the press machine. The carrier 36h is fitted to the toothed portion 36b protruding into the gear case 35e, the planetary gear 36i is supported on the carrier 36h, and the annular gear 35f is inserted to input from the upper portion thereof. The opening edge of the gear case part 35e is fitted so as to cover the flange 35c with the shaft part reversed, and the opening end of the gear case part 35e is cut off from the upper part to surround the outer peripheral edge of the flange 35c. The input shaft portion is coupled to the gear case portion 35e by pressing the punch 105 having an annular cutting edge 105a that is bent inwardly.

The motor opens the electric motor housing 43 attached downward in an insulated state by the attachment screw 42 via the insulating member 41 on the lower end face of the outer case 32b, and the stator 44 from the opening end. It is a structure which was fixed so that it might pinch | interpose by the some bending protrusion 43a and the bending hook 43b. Specifically, the stator 44 winds the stator windings 44b of the six-pole configuration to the stator iron core 44a so as to constitute a reversible rotary induction motor, and the outer circumferential surface of the stator iron core 44a to the motor housing 43. The motor housing 43 is attached to the lower end face of the outer case 32b. The rotor 45 attached to this stator 44 is attached to the rotor fitting part 36d formed in the inner input shaft part 36g, and the fixing nut 46 screwed to the fixing screw 36e. To be fixed by.

As shown in Fig. 10, the rotor 45 _first laminates the outer iron core 45a ₁ and the inner iron core 45a ₂ as the rotor iron core 45a. The outer iron core 45a ₁ and the inner iron core 45a ₂ are dimensioned to generate a gap 45a ₃ for forming an insulating resin layer therebetween. The outer iron core 45a ₁ has a slot 45a ₄ for diecasting a cage-shaped secondary conductor at its outer circumferential edge and is stacked in a skewed state to suppress torque fluctuations. The inner core 45a ₂ has a rotation shaft fitting hole 45a ₅ for fitting a rotor fitting portion 36d formed at the end of the inner input shaft portion 36g at its center, and four straight circular holes around it. 45a ₆ is provided and laminated in a straight state.

In addition, alignment holes into the rotational axis of the inner core (45a ₂₎ (45a ₅₎ is to the accuracy obtained with the anti-rotation of the internal iron core (45a _2), and formed for about 80% of the laminate thickness in the complete round shape, the remaining 20% Is formed into a rectangular hole shape. The inner circumferential surface of the outer iron core 45a ₁ and the outer circumferential surface of the inner iron core 45a _{2 are} formed by a combination of uneven surfaces to prevent rotation when the insulating resin layer is injected into the gap 45a ₃ . In addition, the lamination thickness of the outer iron core 45a ₁ and the inner iron core 45a ₂ is the same as the number of core laminations, so that the difference in dimensions is reduced, and subsequent burr generation during die casting or mold molding is suppressed.

The rotor iron core 45a constructed in this manner is formed of a cage-shaped secondary conductor 45b ₁ and a cooling vane 45b ₂ by an aluminum die cast 45b with respect to the outer iron core 45a ₁ as shown in FIG. 45b ₃ ) integrally molded.

Subsequently, as shown in FIG. 12, an insulating resin is injected into the gap 45a ₃ between the outer iron core 45a ₁ and the inner iron core 45a ₂ to form an insulating resin layer 45c ₁ which bonds both. At the same time, it is extended to the lower end surface to form a rotating magnet base 45c ₂ for the rotation detection sensor, and the permanent magnet 45d is fitted to the rotating magnet base 45c ₂ . And this insulated resin layer 45c ₁ is extended to the upper end surface of the rotor iron core 45a, and the engagement convex part 45c which engages / releases the sliding element of the engagement clutch mechanism mentioned later to this end surface so that engagement is possible. ₃ ) form.

The rotor 45 thus constructed is fitted to the motor rotor fitting portion 36d formed on the inner input shaft portion 36g, and the fixing nut 46 is tightened to attach the motor rotor fitting portion 36d. Attach it fixedly. The circular hole 45a ₆ of the rotor 45 is used to prevent rotation in this fastening operation.

As shown in detail in FIGS. 13 to 15, the engagement clutch mechanism 47 engages the outer rotary shaft 35 with the rotor 45 of the electric motor by engaging the outer rotary shaft 35 ) By rotating the rotational force of the rotor 45 to rotate, or by releasing the engagement coupling to fix the outer rotation axis system 35 to prevent rotation.

In order to reduce the overall dimension in the axial direction of the drive device 6, the engagement clutch mechanism 47 is provided with the annular electron iron core 47b containing the annular electromagnetic coil 47a by the attachment screw 42. It is fastened together and attached to the inside of the motor housing 43, and it installs so that the outer input shaft part 35d may be wound in the inner space enclosed by the end coil of the stator winding 44b. The sliding element 47c made of an insulating resin, which is slidably coupled to the toothed portion 35b formed on the outer input shaft portion 35d, is engaged with the rotor 45 by a coil spring 47d. Pushed down to engage with the uneven portion 45c ₃ , the engagement is released by pulling up the sliding element 47c against the pushing force of the coil spring 47d by the electromagnetic force of the electromagnetic coil 47a to release the engagement. 47b) to prevent rotation.

The sliding element 47c is formed by integrally resin molding the iron absorber 47e sucked by the electronic iron core 47b, and is engaged with the engagement protrusion 45c ₃ to engage the engagement protrusion ( 47f) is integrally formed by resin molding.

When the adsorbent 47e of the sliding element 47c is attracted to the electron iron core 47b, in order to prevent the rotation by locking the sliding element 47c, as shown in detail in FIG. attracting surface of 47b) has an engaging ridges (47e ₁₎ of the plurality of radially put into the engaging groove (47b ₁₎ is to form an engaging groove (47b ₁₎ of a plurality of radial, adsorption character (47e) Form. Engaging groove (47b ₁₎ is engaging ridges (47e ₁₎ to hang the fixed side wall is formed to be 1 to spread two-degree slope inward direction, and engaging ridges (47e ₁₎ the engaging groove (47b ₁₎ The side surfaces in contact with the side wall surfaces of the side surfaces are formed to be wider at an inclination of 1 to 2 degrees in the direction of the tip portion, so that the component force in the fall prevention direction is generated during engagement.

The lower end of the motor housing 43 is fitted with a cover 48 to cover it. And the rotation detection element (potato element) 49 of a rotation detection sensor is attached to this cover 48, and this rotation detection element 49 is attached to the permanent magnet 45d of the said rotor 45. As shown in FIG. Install in correspondence with the rotational track of.

Such a driving device 6 attaches the attachment base 7 to the outside of the bottom of the outer tub 5 by the attachment screw 50. The outer side of the drive device 6 is covered by the outer cover 51 attached with the drive device 6 by the attachment screw 50.

Fig. 16 is a block diagram showing the electrical configuration of this automatic washing machine.

The control unit 17 is configured around the microcomputer 17a, and includes a power supply circuit 17b, a zero cross signal generation circuit 17c, a reset circuit 17d, a power supply relay 17e, and a water supply. Driving composed of a group of semiconductor alternating current switching elements (FLS) or a diode group that controls feeding of the electromagnetic coil 47a of the clutch mechanism and the stator winding 44b of the motor to engage with the solenoid valve 21 and the drain solenoid valve 23. A circuit 17f, an oscillation circuit 17g for generating a clock signal, and a buzzer 17h are provided.

The power supply circuit 17b generates a low voltage direct current voltage for the control circuit, the zero cross signal generation circuit 17c generates a reference signal for controlling the semiconductor switching element, and the reset circuit 17d generates a micro signal when the power is turned on. A reset signal for resetting the computer 17a to a predetermined initial state is generated, and the oscillation circuit 17g generates a clock signal for operating the microcomputer 17a.

The drive circuit 17f includes two semiconductor alternating current switching elements (FLS) 17f ₁ and 17f ₂ for reversible rotation control for power feeding control to the stator winding 44b of the electric motor, and FLS 17f ₃ for direct current braking. ) And a diode bridge 17f ₄ . The FLS 17f ₁ is a semiconductor AC switching element for forward rotation power supply control, and the FLS 17f ₂ is a semiconductor AC switching element for reverse rotation power supply control. The power feeding control to the electromagnetic coil 47a is provided with a diode bridge 17f ₅ for flowing a direct current drive current suitable for generating a large electromagnetic force and a FLS 17f ₆ for phase control for controlling the magnitude of the drive current. do. Since the electromagnetic coil drive current requires a large electromagnetic force in the initial stage of attracting the absorber 47e, the current is controlled to be a large current.

In addition, the microcomputer 17a accepts and displays input signals from the power switch 13, the input switch group 14, the water level sensor 16, and the rotation detection element 49 in accordance with the control processing program already incorporated. The element group 15, the power supply relay 17e, the drive circuit 17f, and the buzzer 17h are controlled.

When the power switch 13 is input, the microcomputer 17a of the control unit 17 turns on the power supply relay 17e, and becomes a standby state.

And when washing start is instruct | indicated from the input switch group 14, the washing | cleaning dehydration mode set by the input switch group 14 is confirmed, and it will enter into the laundry dehydration process of the set laundry dehydration mode.

Fig. 17 shows control processing executed by the microcomputer 17a in the basic laundry dehydration mode.

<Step 1701>

The electromagnetic water supply valve 21 is opened to supply water to the predetermined level in the outer tank 5. This predetermined water level is a water level suitable for detecting the laundry amount in the next step, and the water level detection is performed by monitoring the water level detection signal output from the water level sensor 16.

<Step 1702>

The amount of laundry is detected. This laundry amount detection is performed on the basis of the magnitude of the resistance of the laundry when the stirring blade 4 is rotated as in the prior art. Therefore, by pushing the electromagnetic coil 47a of the engagement clutch mechanism 47 and attracting the adsorber 47e, the sliding element 47c is pulled up against the coil spring 47d and the sliding element 47c. ) Is engaged from the engaging convex and concave portion 45c ₃ of the rotor 45 of the motor, and the adsorbent 47e is adsorbed to the electron core 47b and coupled to 47e ₁ and 47b ₁ . As a result, the outer rotary shaft system 35 (washing and dewatering tank 2) is fixed by being locked to suppress rotation. In this state, the rotor 45 is rotated by pressing the stator coil 44b of the electric motor, decelerated from the inner input shaft portion 36g via the planetary gear 36i, and then transferred to the inner output shaft portion 36c and stirred. Rotate the blade (4). Then, the inertia rotational speed at the time of stopping the drive is detected based on the signal from the rotation detection element 49, and the amount of laundry is detected based on the attenuation characteristic. This detection process is performed while changing the water level, so that the quality of the laundry can be detected.

<Step 1703>

The washing level is determined according to the quantity and quality of the laundry, and watering is performed up to this washing level.

<Step 1704>

Carry out the washing process according to the quantity and quality of the laundry. This washing step includes a washing method in which the stirring blades 4 are rotated forward and backward, a washing method in which the washing and dewatering tank 2 is rotated forward and backward, and a washing method in which the washing and dehydrating tank 2 is continuously rotated in one direction. You can optionally run it.

The washing method performed by forward and reverse rotation of the stirring blades 4 is suitable for washing by stirring strongly laundry such as underwear or socks of cotton fabric, for example. Moreover, the washing | cleaning method which performs the reverse rotation of the washing | cleaning and dehydration tank 2 is suitable for washing so that large laundry, such as a shirt and a bath towel, may be stirred, and a entanglement and washing | cleaning stain may be reduced. And the washing | cleaning method which carries out by rotating the washing-and-dehydrating tank 2 continuously to one direction is suitable for wash | cleaning laundry, such as dry mark clothing, so that form may not be disturbed, for example.

The washing method of forward and reverse rotation of the stirring blade 4 presses the electromagnetic coil 47a of the engagement clutch mechanism 47, and pulls up the sliding element 47c of the sliding element 47c and the rotor 45. The engagement is released, the absorber 47e is attracted to the electromagnetic iron core 47b, and the locking protrusion 47e ₁ is coupled to the locking fixing groove 47b ₁ to prevent the outer input shaft portion 35d from rotating to wash and dehydrate. By holding the jaw 2 stationary and pressing the stator coil 44b so that the rotor 45 rotates forward and backward, this rotation is controlled by the inner input shaft portion 36g, the planetary gear 36i, and the inner output shaft portion 36c. It transfers to the stirring blade 4 through and performs it.

The washing method for rotating the washing and dewatering tank 2 in the forward and reverse direction cancels the force of the electromagnetic coil 47a of the engagement clutch mechanism 47 and pushes the sliding element 47c down by the coil spring 47d to make the sliding movement. The engagement protrusion 47f of the element 47c is inserted into the engagement recessed portion 45c _{3 of} the rotor 45 so as to be engaged with the rotor 45 so as to be connected to the rotor 45, and the rotor 45 of the electric motor is reversed. By pressing the stator coil 44b to rotate, this rotation is transmitted to the washing-and-dehydrating tank 2 via the outer input shaft part 35d, the gear case part 35e, and the outer output shaft part 35a. At this time, since the planetary gear mechanism loses the deceleration function, the stirring blade 4 rotates integrally in synchronism with the washing and dewatering tank 2.

In the washing method in which the washing and dewatering tank 2 is continuously rotated in one direction, the stator coil 44b is set such that the water level is set low and the motor is continuously rotated in one direction in a connected state in which the engagement clutch mechanism 47 is engaged. By pressing).

The selection of these three types of washing methods is determined by the microcomputer 17a according to the amount and quality of the laundry or the washing mode set by the input switch group 14, and the electromagnetic coil 47a of the engagement clutch mechanism 47 is selected. By controlling the intermittent state of the engagement clutch mechanism 47. Moreover, you may make it the washing method which combined these as needed.

<Step 1705>

Run the rinse process. This rinsing step may be performed by combining a shower dewatering rinse and a soaking rinse. In the combination method, the shower dewatering rinsing may be performed first, followed by soaking rinsing.

The shower dehydration rinse opens the drain solenoid valve 23 to the drainage state, and opens the water supply solenoid valve 21 in a state in which the stirring blade 4 and the washing / dehydrating tank 2 are rotated at high speed to perform dehydration operation. The water is poured into the washing and dehydrating tank 2.

At this time, in the dewatering to rotate the washing and dewatering tank 2 at high speed, the engagement clutch mechanism 47 applies the force of the electromagnetic coil 47a similarly to the washing method for rotating the washing and dewatering tank 2 described above. It is realized by making the motor move at high speed in a predetermined direction by making the sliding element 47c connected to the rotor 45 of the motor.

The soaking rinsing causes the stirring vane 4 and the washing and dehydrating tank 2 to stop, opening the drain solenoid valve 23 to drain the washing water in the outer tank 5, and the washing and dehydrating tank 2 is quickly Rotate and dewater, then close the drain solenoid valve 23 and open the feed solenoid valve 21 to pour water into the washing and dewatering tank 2 to store rinsing water in the outer tank 5, and to stir the blades 4. Alternatively, the washing and dewatering tank 2 is rotated to repeat the operation of stirring the laundry.

<Step 1706>

Run the dehydration process. This dewatering process is performed similarly to the dehydration in the above-mentioned rinsing process.

In each of these steps, the microcomputer 17a displays the set state and the process progress state by controlling the display element group 15, and causes the buzzer 17h to sound when an abnormality occurs or when washing is finished.

18 is a longitudinal side view showing an embodiment of a drive device 6 using a brushless direct current motor. In this embodiment, the stator iron core of the induction motor and the stator iron core of the brushless DC motor are selectively inserted into one motor housing, and the inner input shaft is connected to the rotor of the induction motor and the rotor of the brushless DC motor. Since it can use together, the characteristic of this embodiment with respect to embodiment mentioned above is a structure of an electric motor. Therefore, overlapping description is abbreviate | omitted about the component which is common to embodiment mentioned above.

The brushless DC motor in this embodiment is configured by winding the stator 52 to the stator iron core 52a by winding the stator winding 52b, and inserting the stator iron core 52a into the motor housing 43 to form a bending protrusion. Fix it so that it pinches by 43a and the bending hook 43b. The gap member 53 compensates for the difference between the dimension in the axial direction of the stator iron core 52a and the dimension of the stator iron core 44a of the induction motor in the above-described embodiment.

The rotor 54 attaches the permanent magnet magnetic pole 54b to the outer circumference of the rotor iron core (yoke) 54a, and the inner input shaft portion (by the insulated resin attachment boss 54c formed integrally with them). 36g) to the motor rotor fitting portion 36d. The engagement recessed part 54d which fits the engagement protrusion 47f formed in the sliding element 47d of the engagement clutch mechanism 47 is resin integrally with the said attachment boss 54c on the upper surface of the attachment boss 54c. Mold. The attachment boss 54c is formed to a size that can be attached and attached to the motor rotor fitting portion 36d in the same manner as the rotor 45 of the induction motor, and the rotor iron core 54a is provided at the fastening end on the inner end side. ) Is exposed, and a metal ring 54e is embedded at the fastening end on the outer end side.

Moreover, the attachment boss 54c of a rotor can also be formed short by using the exclusive inner input shaft part which shortened the motor rotor fitting part.

Further, the permanent magnet magnetic pole 54b is configured to protrude outward from the stator winding 52b, and the magnetic pole detection element 55 is provided opposite to the rotational trajectory of the protruding portion to detect the rotational position of the rotor 54. Configure to This magnetic pole detection element 55 is attached to the cover 48.

Brushless direct current motors, as is generally well known, detect the relative position of the pole 54b of the rotor 54 with respect to each phase of the stator winding 52b to determine the angle of the stator winding 52b. Since it is the structure which controls the drive current which flows into a phase, detailed description is abbreviate | omitted.

In the fully automatic washing machine using this brushless DC motor, the drive circuit 17f is provided with a rectifying circuit for a DC power supply for an electric motor and an inverter circuit for PAM controlling the current of each phase of the stator winding 52b.

Even when such a drive device 6 is used, the fully automatic washing machine as in the above-described embodiment can be realized. In addition, since the brushless DC motor can perform various rotational control, it can be made to perform a more detailed washing process and a dehydration process.

However, in order to selectively assemble an induction motor or a brushless motor using the electric motor housing 43 and the inner input shaft portion 36g as described above, the dimensions of the outer and fitting portions of the stator and the rotor constituting them must be considered. .

The outer dimensions for obtaining the same power are usually larger on the induction motor. Therefore, it is necessary to examine the stator 44 and the rotor 45 of the induction motor.

The drive device 6 having a configuration in which the planetary reduction gear mechanism, the engagement clutch mechanism, and the electric motor are arranged concentrically in series in the vertical direction with the drive rotary shaft 34 as the axial center is considered to be the outer shell ( It is necessary to comprise so that protrusion amount from the attachment surface to the bottom surface of 5) below may be 160 mm or less. Since the drive device 6 is attached to the upper end of the drive rotary shaft 34 with the washing and dehydration tank 2 and the stirring vane 4, the ball bearing supporting the drive rotary shaft system 34 is supported. It is necessary to provide 33a and 33b at intervals as large as possible in the axial direction. Therefore, the reduction mechanism external cases 32a and 32b in which these ball bearings 33a and 33b are provided become an axial dimension corresponding to the axial spacing of the ball bearings 33a and 33b.

From these dimension distribution, the dimension in the axial direction of the electric motor is about 90 mm including the engagement clutch mechanism 47. Induction motors may have larger diameters of the stator 44 and the rotor 45 in order to control the axial dimension while maintaining the required output characteristics (around 250W). However, the stator 44 and the rotor 45 If iron cores 44a and 45a of the s) are formed by punching and stacking iron plates, the iron cores 44a and 45a having a large diameter are expensive.

Thus, in the present embodiment, the engagement clutch mechanism 47 is studied to be installed to wind the outer input shaft portion 35d by utilizing the space surrounded by the end coil of the stator winding 44b of the induction motor. By mitigating the restriction in the axial direction under 47), the outer diameter of the stator core 44a was reduced to 160 mm, the inner diameter of 98 mm, and the axial dimension to 25 mm.

The inner diameter of the stator iron core 44a is attached to the motor housing 43 by the attachment screw 42 on the lower end face of the outer case 32b in a state where the stator 44 is inserted into the motor housing 43. The contact reference surface of the centering jig at the time of making, and also the attachment screw 42 is located inside the inner diameter dimension to provide a space for screwing tool insertion.

In connection with this, the position of the bending protrusion 43a which installs the motor housing 43 in order to clamp this stator core 44a made 34 mm the axial dimension from the attachment surface of this motor housing 43. As shown in FIG.

The brushless DC motor attached in place of such an induction motor makes the external dimension and the internal diameter of the stator core 52a constituting the stator 52 the same as the stator core 44a of the induction motor, and reduces the axial dimension. Configure. And the rotor 54 is comprised so that it may become outer diameter shape corresponding to the stator 52 comprised using this stator iron core 52a.

In order to selectively assemble the induction motor or the brushless motor as described above using the production equipment together, in particular, the motor housing 43 in which the stator 44 or the brushless motor 52 of the induction motor is fitted is attached. When attaching in the state centered on the lower end surface of the outer case 32b by the attachment screw 42, a jig can be centered by contacting the inner diameter surfaces of the stator iron cores 44a and 52a. In addition, since the attachment screw 42 is located in the inner diameter, the tool can be inserted and fastened in the centered state.

In the present invention, the motor housing to which the stator of the electric motor is attached is used in combination with the stator of the induction motor and the stator of the brushless DC motor. Two types of fully automatic washing machines equipped with can be produced relatively inexpensively.

In addition, the drive device of the present invention is configured to attach the inner input shaft portion for attaching the rotor of the electric motor to the inner side of the outer input shaft portion by rolling bearings with the outer ring pressed therein so as to support the rotor on one side. As a result, the driving device using the induction motor can be realized in a small size and at low cost.

And by providing the clutch mechanism using the space in an electric motor housing, the dimension increase of the axial direction of a drive apparatus can be reduced.

Claims (18)

delete delete delete delete delete delete Frame member 1, outer tank 5 suspended from the frame member, washing and dewatering tank 2 rotatably installed in the outer tank, and stirring vanes rotatably provided in the washing and dewatering tank. (4) and a drive device (6) for driving the washing and dewatering tank and the stirring vane, wherein the drive device (6) includes a drive rotary shaft of the washing and dewatering tank (2) and the stirring vane (4). The reduction gear mechanism, the clutch mechanism, and the electric motor are arranged in series in the height direction, and the motor has a motor housing 43 attached to the outer case 32b of the reduction gear mechanism, and a rotating shaft protruding into the motor housing. Fully automatic washing machine characterized in that it is configured to selectively attach an induction motor or a brushless electric motor to (36). 8. The fully automatic washing machine according to claim 7, wherein the induction motor and the brushless motor are attached to the motor housing with the same outer diameter of the stator iron core of the stator. The fully automatic washing machine according to claim 8, wherein the induction motor and the brushless motor have the same inner diameter of the stator iron core of the stator. The annular electromagnetic coil according to claim 7 or 9, wherein the clutch mechanism protrudes into the electric motor housing 43, and is disposed so as to wind the outer input shaft portion 35d, which is a rotating shaft of the washing and dewatering tank 2. And a sliding element 47c having a spring force applied to the outer input shaft portion 35d so as to be slidably axially coupled to the rotor of the electric motor. Fully automatic washing machine characterized in that the suction by the electromagnetic force to release the bond. 8. The outer input shaft portion (35d) according to claim 7, wherein the clutch mechanism is located in a space surrounded by an end coil of a stator winding wound around a stator iron core (44a) in the motor housing and protrudes into the motor housing (43). A sliding element having an annular magnetic coil (47a) arranged to wind the wire, and having a spring force applied to engage the rotor (45) by axially sliding to the outer input shaft portion (35d) ( 47c) suctioned by the electromagnetic force of the electromagnetic coil to release the coupling. The mounting screw of the electric motor housing 43 to the outer case 32b of the reduction gear mechanism is positioned inside the inner diameter of the stator core 44a of the electric motor and fastened through the rotor mounting space. Fully automatic washing machine characterized by the operation. 8. The fully automatic washing machine according to claim 7, wherein the rotating shaft is supported by rolling bearings (40a, 40b) in which the outer ring is press-fitted so that the rotor (45) of the electric motor is attached in one supporting state. delete delete delete delete delete