JPH1033886A - Washing machine and control method thereof - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To improve work efficiency by reducing assembly work and labor, to reduce manufacturing costs, and to significantly reduce noise during washing, rinsing, and dehydration. And a control method thereof. SOLUTION: A buoyancy member 107 which is raised and lowered by a buoyancy effect by the supply and drainage of washing water, and the power of a driving means 60 are transmitted to switch the power so that the pulsator 103 and the dewatering tub 101 are rotated in the same direction. A clutch means and a planetary gear 7 for transmitting the power of the clutch means for washing and rinsing when the buoyancy member is raised and switching the power so that the dewatering tub rotates in the direction opposite to the direction of rotation of the pulsator.
7, an opening detection unit capable of detecting whether or not the door is open, a control unit for receiving a detection signal of the opening detection unit, and a motor driving unit for changing the speed of the driving unit in accordance with the control of the control unit. It is characterized by being provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric washing machine, and more particularly to an electric washing machine, in which a pulsator and a dewatering tub are rotated in opposite directions during washing or rinsing to perform a washing and rinsing step. In the range where the drive means is normally rotated to wash or rinse when the door is closed during washing or rinsing, and the rotation of the drive means is adjusted and not stopped when the door is open when the door is closed during washing or rinsing. The present invention relates to a washing machine adapted to perform washing or rinsing at a low speed inside the washing machine and a control method thereof.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 1, a washing tub 2 is mounted at a predetermined height in a washing machine main body 1 via a suspension bar (not shown). A driving means 3 for generating power when power is applied is mounted on one side of the lower surface of the outside of the washing machine, and the power of the driving means 3 is transmitted from a belt 4 to the center of the lower surface of the outside of the washing tub. Power transmission means 5 to rotate the washing tub 6 at a reduced speed.
Is installed.

Further, the power of the power transmission means 5 is transmitted to the bottom surface of the dewatering tub 6 so that the washing water is swirled while being turned left and right in the dewatering tub 6 and the laundry is agitated for washing. A pulsator 7 is mounted. In the figure,
An unexplained reference numeral 8 is a water supply means, and 9 is a drainage means.

In the washing machine constructed as described above, a predetermined amount of laundry and detergent are supplied in the dewatering tub 6 to apply power, and when washing conditions are selected, the cold and hot water is removed through the water supply means 8. The water is supplied into a water tub 6 and supplied to a predetermined water level. Then, the power by the operation of the driving means 3 is transmitted to a power supply means via a belt 4 to rotate the power transmission means 5 in a forward / reverse direction, and a washing shaft (not shown) of the power transmission means 5 is provided. Pulsator 7 connected to
Is rotated left and right several times, so that the water flow in the dehydration tub 6 is swirled, and a washing step in which the laundry and the detergent are mutually stirred is performed.

Further, when the washing is completed in accordance with the washing process, the washing water is drained from the inside of the washing machine main body 1 to the outside according to the operation of the drainage means 9, leading to a reprogrammed washing, rinsing and dehydrating mode. After the new washing water is supplied through the water supply means 8 and the rinsing mode is performed several times, the dehydration tub 6 is again driven by the power transmission means 5 which is driven by the power of the driving means 3 and is driven at high speed again. , The dehydration step is performed.

[0006] A conventional power unit is constructed as shown in FIG.
As shown in FIG. 1, a pulley 10 which is rotated by transmitting the power of the driving means 3 via a belt 4 is mounted.
A drive bearing 11 is rotatably mounted on the drive shaft 11, and a drive shaft coupling 12 is firmly fitted to a lower end of the drive shaft 11.

A lower connector 13 is pivotally mounted on the upper end of the drive shaft coupling 12, and two vertical connectors are provided between the drive shaft 11 and the lower connector 13 so as to stably rotate each other. The bushing 14 is pivoted through,
An upper connector 15 is mounted on the upper side of the lower connector 13 so as to be rotated together with the rotation of the lower connector 13.

A brake band 38 is mounted around the outer side of the upper connector 15 so that the rotation of the upper connector 15 is stopped by the frictional force or the binding force is released by the binding force by the operation of a brake lever described later. .

On the upper side of the upper connector 15, a vertical shaft coupling 16 mounted via a plurality of fastening bolts (not shown) at the lower center of the dewatering tub 6 is mounted in a selection manner. A vertical shaft 18 attached to the pulsator 7 is pivotally mounted on the inner side of the inner side of the inside with two bushings 17 above and below the inner side.

On the other hand, a sun gear 20 meshes with the upper end of the drive shaft 11, and a plurality of planetary gears 21 are provided around the sun gear 20 so that the rotation of the sun gear 20 is transmitted and reduced. The rotation of the plurality of planetary gears 21 is transmitted to the lower end of the drive shaft 18 to rotate the vertical movement shaft 18, and the upper and lower portions are supported to support the rotation of the plurality of planetary gears 21 via the shaft 24. Carriers 22, 23 are mounted.

At this time, the plurality of planetary gears 21 mesh with an internal gear 25 formed around the inside of the upper connector 15 and rotate.

On the other hand, around the lower outside of the lower connector 13, a ball bearing 27 is inserted into the bottom surface of the lower case 26 so that the lower connector 13 can be easily rotated. A support member 29 via a clutch bearing 30 is mounted so that the lower connector 13 rotates in a predetermined manner. The support member 29 is mounted on the lower end of the lower case 26 by a fixing means 31 through an edge.

Around the outer side of the space between the lower connector 13 and the drive shaft coupling 12, the power of the drive coupling 12 is controlled so as not to be transmitted to the lower connector 13 during the washing process, or the drive shaft coupling 12 is controlled during the dewatering process.
A clutch spring 33 is mounted so that the power of the clutch spring 33 is transmitted to and controlled by the lower connector 13. A clutch holder 34 is mounted on the entire outer peripheral edge of the clutch spring 33, and the upper end of the clutch spring 33 engages with the lower connector 13. And a lower end thereof is fixed to a clutch holder 34 mounted on the entire outer peripheral edge of the clutch spring 33.

At this time, a saw-toothed sleeve member 36 is mounted on the outer peripheral edge of the clutch holder 34 via a brake ring 35.

On the other hand, a brake lever 37 is mounted on one side of the lower case 26. When the brake lever 37 is operated at the lower end of the brake lever 37, the sleeve member 36 and the brake ring 35 are driven by the power. A connection lever 39 is mounted to compress the clutch spring 30 when operated, and the power of a drain driving unit (not shown) is transmitted to one side of the brake lever 37 so that the brake lever 37 and the connection lever 39 act. The clutch lever 40 is mounted. In the figure, the unexplained reference numeral 3
2 is an upper case.

As shown in FIG. 2, when the power of the driving means 3 is transmitted to the pulley 10 of the power transmission means 5 via the belt 4 during washing, the conventional When the lever 40 pushes the serrated sleeve member 36, the clutch holder 34 is moved by the frictional force of the brake ring 35 connected to the sleeve member 36, and the clutch holder 34 is moved by the clutch spring 33.
Is released in such a direction that the clutch spring 33 expands, the drive shaft coupling 12 prevents the lower connector 13 from rotating due to the gap formed between the clutch spring 33 and the lower connector 13. Only the drive shaft 11 is rotated.

That is, when the drive shaft 11 rotates, the drive shaft 11 rotates together with the sun gear 20 mounted on the tip of the drive shaft 11, and the plurality of planetary gears 2 meshed with the sun gear 20.
1 will also rotate.

Therefore, the upper and lower carriers 22 and 23 mounted on the upper and lower sides of the plurality of planetary gears 21 are rotated together by the shaft 24 mounted on the inner side of the plurality of planetary gears 21, and the selection is made at the center of the upper carrier 22. By rotating the vertical shaft 18 mounted in the manner, the vertical shaft 1 is rotated.
The pulsator 7 mounted on the tip of the tub 8 is turned upside down to generate washing water supplied into the dewatering tub 6 so as to be swirled, and a washing process for stirring the laundry and the detergent is performed.

On the other hand, at the time of dehydration, when the clutch lever 40 is operated by a drain driving means (not shown), the sleeve member 36 and the clutch holder 34 connected to the clutch lever 40 are operated and the clutch holder 34 is operated.
Is operated in the winding direction, so that there is no gap between the clutch spring 33 and the drive shaft coupling 12.

At this time, the clutch spring 33 is engaged with the drive shaft coupling 12 and rotates together with the lower connector 13. When the clutch lever 40 is operated, the brake lever 37 is actuated. Brake band 3 connected
8 is released.

In the dehydration control state, when the driving means 3 rotates in the reverse direction, the power of the power transmission means 5 is transmitted through the belt 4 to the pulley 1 of the power transmission means 5.
0 rotates the drive shaft coupling 12 connected to the pulley 10 via the drive shaft 11 while the drive shaft coupling 12 is rotated by the clutch spring 3.
3, while rotating together with the lower connector 13 connected thereto, the torque of the lower connector 13 is transmitted to the upper connector 15 mounted on the lower connector 13, and the vertical shaft coupling mounted on the upper connector 15 in a serrated manner. The vertical motion shaft coupling 16 performs a dehydration step of rotating the dehydration tub 6 fastened at its upper end via a plurality of bolts (not shown).

According to the conventional power transmitting device for a washing machine having the above-described structure, the lower case 2 has a function of connecting or shutting off the power during washing or spin-drying.
6, a clutch bearing 30 and a clutch spring 3, which are mounted on the lower end by a support member 29 via fixing means 31.
3. Because of the complicated structure including the clutch holder 34, the brake ring 35, and the sleeve member 36, there is a problem that assembling work and labor are increased, work efficiency is reduced, and manufacturing cost is increased.

Further, since the driving means 3 is mounted on one side from the center of the lower part of the washing tub (not shown), there is also a problem that noise is generated strongly during washing and spin-drying.

As an example of another conventional washing machine, see Japanese Unexamined Patent Publication No. Sho 62
No. 207497 has been proposed. In the washing machine disclosed in the above-mentioned publication, as shown in FIG. 3, the rotation of the pulley 300 is transmitted from a drive shaft 301 moving up and down a predetermined distance and a drive gear 302 at the upper end thereof to an intermediate gear 303 and terminated. Is transmitted to a vertical movement shaft 305 that fixes the vertical movement gear 304.

Further, a lower end of a casing 306 supporting the drive shaft 301 is engaged with an engaging projection 307 provided on a central upper surface of a lower pulley 300 to reduce the speed of the reduction gear 308.
An engagement hole 309 is formed so as to rotate integrally with the pulley 300.

A lower end of the drive shaft 301 is provided at a lower portion thereof with a solenoid 3 provided on a bottom surface outside the washing tub 310.
The connecting part 314 is connected to the operating part 313 supported by the eleventh pressing spring 312 through the contact tool 314, and the pulley 300 moves up and down by turning on and off the power supply of the solenoid 311.

At this time, the pulsator 315 and the dewatering tank 316
Are rotated in opposite directions, or the rotation is switched in the same direction.

Another conventional washing machine having such a configuration is as follows.
During the washing and rinsing steps, the solenoid 311 is turned on in accordance with the energization, the engaging projection 307 and the engaging hole 309 are disengaged from each other, and the rotational force of the pulley 300 is
, The drive gear 302, the intermediate gear 303, the vertical gear 304, and the vertical shaft 305 are sequentially rotated, and the pulsator 315 connected to the vertical shaft 305 is rotated at a reduced speed.

At this time, since the rotational force of the pulley 300 is not transmitted to the dewatering tank 316, when the pulsator 315 is rotated, a trigger due to the reaction of the rotation is transmitted and the pulsator 315 is opposed to the pulsator 315. It starts to rotate in the opposite direction.

[0030]

According to the above-mentioned other conventional washing machine, the dewatering tub 316 is provided.
Is the pulsator 3 without the power of the pulley 300 being transmitted.
When the pulsator 15 is rotated, the pulsator 315 is rotated depending on the timing of the rotation reaction. Therefore, the rotation reaction is reduced by the swirling water flow generated when the pulsator 315 rotates, or the pulsator is rotated by the frictional force of the laundry. There is a problem that the original rotation cannot be satisfied by being rotated in the same direction as the rotation direction 315.

[0031]

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in order to solve the above-mentioned various problems, and an object of the present invention is to make it possible to switch power during washing and dehydration by buoyancy. The drive means is mounted at the center of the lower part of the washing tub, thereby reducing the assembling work and labor and improving the work efficiency, reducing the manufacturing cost, and washing, rinsing and dewatering. It is an object of the present invention to provide a washing machine and a control method for the washing machine in which the noise at the time can be significantly reduced.

Another object of the present invention is to allow the door to rotate normally when the door is closed during washing and rinsing, and not to stop by adjusting the rotation speed of the driving means when the door of the washing machine is opened. An object of the present invention is to provide a washing machine capable of performing washing and rinsing at a low speed in a range, and a method of controlling the washing machine.

Another object of the present invention is to improve the washing and rinsing power while rotating the pulsator and the dewatering tub in the opposite directions during washing or rinsing, and to shorten the time and the washing machine. It is to provide a control method.

[0034]

In order to achieve the above-mentioned object, a washing machine according to the present invention comprises a door for transmitting power of a driving means to rotate a pulsator and a dewatering tub to perform washing and rinsing or dewatering. In the washing machine to which is attached, a buoyancy member which is raised and lowered by a buoyancy action by the supply and drainage of the washing water, and the power of a driving means for performing dehydration when the buoyancy member is lowered is transmitted to the pulsator and the dehydration tub. Clutch means for switching the power so that the rotator is rotated in the same direction; and the power of the clutch means is transmitted for washing and rinsing when the buoyancy member is raised, and the dewatering tub is rotated in a direction opposite to the rotation direction of the pulsator. A planetary gear for switching the power to rotate, a door opening sensor capable of detecting whether or not the door is open, control means for receiving a detection signal of the door sensor, and the control Characterized in that provided a motor drive unit for changing the speed of the drive means under the control of the stage.

Further, the method for controlling a washing machine according to the present invention comprises:
After the user opens the door and puts the laundry into the dehydration tub, the door is closed and the start button is pressed, and the rotation direction of the pulsator, which is driven by the driving means and rotates forward and reverse, is opposite to the rotation direction. Rotating the washing tub to perform washing or rinsing; receiving a sensing signal of the door opening sensing unit in the course of the step to determine whether the control means is opening; and closing the door in the step. In the case of, the rotation of the drive means is continued at a normal speed, and in the case of opening the door, the control means recognizes this and generates a control signal to the drive unit of the drive means to reduce the speed of the drive means. Determining whether the set time for the washing or rinsing time has elapsed, and if the time set in the step has not elapsed, the washing or rinsing process is continued; if the time has elapsed, Make sure all washing or rinsing steps are completed. The features.

[0036]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below in detail with reference to the accompanying drawings. As shown in FIGS.
A driving means 60 operated by the control means 200 is mounted on the lower part of the washing tub 100, and is supported by bearings 62 mounted on the upper and lower parts inside the driving means 60, and receives the power of the driving means 60 to smoothly. Drive shaft 7 to be rotated
0 is attached.

A lower drum portion 71 is rotatably mounted on the center of the upper end of the driving means 60 via a bearing 61. An upper drum portion 73 is provided above the lower drum portion 71.
Is installed. An insertion portion 71a is formed at the center of the inside of the lower drum portion 71 so that a projecting portion of a connector to be described later is inserted and separated.

A dehydrating shaft 91 is firmly fitted to the center of the inside of the upper drum portion 73, and a dehydrating tub 101 is mounted on the upper portion of the dehydrating tub 91 by bolts 56. An oil race bearing 55 is mounted so that the washing shaft to be rotated smoothly is mounted, and a packing is mounted on the upper side of the oil race bearing 55 mounted on the upper side so as to prevent leakage of washing water.

A bearing 50 is mounted in a housing 50 fixed to the lower portion of the washing tub 100 via bolts 53 so that the upper drum portion 73 is smoothly rotated around the upper end outer side of the upper drum portion 73. I have. At the center of the upper end of the housing 50, a packing 51 is attached so as to prevent the washing water in the washing tub 100 from leaking.

On the other hand, inside the drive shaft 70 to which the power of the drive means 60 is transmitted and rotated, a polygonal hollow portion 7 is provided.
0a is integrally formed, and the connector 8 is inserted into the hollow portion 70a and vertically moved by a buoyancy member described later.
0 is attached.

A lower shaft 83 having the same shape as the polygonal hollow portion 70a of the drive shaft 70 is formed in the lower portion of the connector 80, and a central portion thereof faces the insertion portion 71a of the lower drum portion 71. A protruding portion 84 is formed, and a concave groove 81a is formed in the center of the upper end so that a circular rod formed at the lower end of a rod to be described later is inserted in the upper portion thereof. 81
Are formed.

A plurality of decelerable planet gears 77 are mounted around the upper side of the connector 80, and a ring gear 79 formed inside the upper drum portion 73 is provided around the outer sides of the plurality of planet gears 77. It is meshed with.

A carrier 90 is mounted on the upper part 1 of the planetary gear wheel 77 so that the carrier 90 is mounted on a shaft 72 mounted on the inside of the planetary gear 77 and rotates together with the rotation of the planetary gear 77.

At the center of the inside of the carrier 90, a lower end is mounted by a serration method, and a washing shaft 93 in which a pulsator 103 is mounted on a top by a bolt 109 is mounted.

A hollow part 93a is formed inside the washing shaft 93, and a rod 110 having an upper end buoyancy part 107 is mounted in the hollow part 93a. Groove 81 formed at the upper end
A circular bar 110a is formed so as to be inserted into a.

On the other hand, a projecting portion 104 is formed at the center of one side of the pulsator 103 so that the buoyancy member 107 is attached thereto. Is attached.

In the lower part of the buoyancy member 107, washing water flows into the hole 106 a of the lid member 106 and the washing shaft 9
A packing 108 that is folded so as not to penetrate into the hollow portion 93a of the third pulsator 103 is fixed in the protruding portion 104 of the pulsator 103 by a leave 105 formed at one side of the center.

The unexplained reference numeral 111 indicates the connector 80
The cam member is provided in the groove 81a so that the circular rod 110a formed at the lower end of the rod 110 inserted in the groove 81a is not moved.

Further, as shown in FIG. 6, the control means 200 is a microcomputer for controlling the washing process, and an external AC voltage is applied to the input side of the control means 200 so that the operation power supply DC ( A power input unit 210 for supplying power of about 5V and an opening detection unit 230 for detecting whether the door is open or not are connected, and a control signal is received from the control unit 200 according to a detection signal of the opening detection unit. A motor driving section 250 for changing the rotation speed of the motor 60 is connected to the output side of the control means 200.

Hereinafter, the operation and effect of the washing machine and the method for controlling the washing machine according to the present invention configured as described above will be described. When washing water flows into the dehydration tub 101 during washing,
Lid member 10 mounted on the upper end of pulsator 103
The washing water is projected into the plurality of holes 106a formed in
The buoyancy member 107 rises by flowing into the inside of the buoyancy member 4.

At this time, since the circular rod 110a formed at the lower end of the rod 110 connected to the buoyancy member 107 is fixed to the concave groove 81a of the connector 80 by the cam member 111, the connector 80 is raised. Thus, the projecting portion 84 formed in the hollow portion of the connector 80 is separated from the insertion portion 71a of the lower drum portion 71.

That is, when the power of the driving means 60 applied by the control means 200 is transmitted to rotate the driving shaft 70, the connector 80 inserted inside the driving shaft 70 rotates, and the rotation of the connector 80 is stopped. Multiple planetary gears 7
7, and the plurality of planet gears 77 are
3 rotates in accordance with the ring gear 79 formed inside.

Further, when the plurality of planetary gears 77 are rotated, the carrier 90 connected to the planetary gears 77 and the shaft 72 rotates together, so that the washing shaft 93 formed above the carrier 90 rotates. By doing so, the pulsator 103 attached to the tip of the washing shaft 93 is turned left and right in the spin tub 101 to vortex the washing water supplied into the spin tub 101 and stir the laundry and the detergent. The washing process is performed.

Further, not only is the force distributed according to the relative movement of the plurality of planetary gears 77 and the ring gear 79, but also the rotational directions of the driving means 60 and the upper drum 73 are reversed. That is, the dewatering tub 101 integrally connected to the upper drum 73 rotates in the opposite direction to the pulsator 103 connected to the drive shaft 70 of the drive means 60.

Further, as shown in FIG.
When the washing and rinsing steps are completed by 0 and dehydration is started, the buoyancy member 107 is lowered by the washing water being drained by drainage means (not shown), and is connected to the lower side of the buoyancy member 107. Rod 110 and a connector 80 connected to the lower end of the rod 110
At the same time, the protruding portion 84 formed on the lower side of the connector 80 and the insertion portion 71a formed on the lower inner side of the lower drum portion 71 include teeth.

That is, when the drive shaft 70 rotates, the connector 80 inserted into the drive shaft 70 rotates, and the rotation of the connector 80 causes the lower drum 71 to rotate together with the upper drum 73.

That is, at the time of dehydration, the upper drum 73
Dehydration tub 101 attached by a dehydration shaft 91 inside the upper part of
Is rotated in the same direction as the pulsator 103 which rotates while meshing with the drive shaft 70 of the drive means 60, thereby performing the dehydration step.

On the other hand, the door opening detecting section 230 continuously recognizes whether or not the door is opened. If the door is opened during the washing and rinsing processes, the door opening detecting section 230 detects this. The control means 200 having received the sensing signal generates a control signal to the motor driving means 250 and
The speed of 0 is reduced to an appropriate speed.

FIG. 7 is a flowchart showing a washing process according to the present invention, where S represents a step. As an initial condition for the operation, it is assumed that the washing water is not supplied into the washing tub 100 and that no laundry is put into the dewatering tub 101.

First, the user opens the door, puts the laundry into the dewatering tub 101, and closes the door. Further, the user applies power through the power input unit 20 connected to the control unit 200, selects a mode arranged on an operation plate (not shown), and presses a start button.

In the step S1, washing or rinsing proceeds while the pulsator 103 and the dewatering tub 101 are rotated in opposite directions.

In the step S2, the step S1
When the opening detection unit 230 detects whether the door is open or closed while transmitting the signal to the control unit 200, the control unit 200 determines whether the door is open or not. If it is determined in step 2 that the door has been closed (NO), the process proceeds to step S3. If the door has been opened (YES), the process proceeds to step S5.

Step S3 shows a step in which the drive means 60 rotates normally when the door is closed, and step S5 shows a control means in which the door opening means 230 senses this when the door is opened and receives the sensing signal. The step of generating a control signal from the motor drive 250 by the motor 200 to rotate the driving means 60 at a low speed will be described.

In step S4, it is determined whether the driving means 60 has been normally rotated and the washing or rinsing time has passed the time set by the control means 200. On the other hand, in step S4, the washing or rinsing time
If it is determined that the preset time has not elapsed (NO), the process proceeds to step S2, where the laundry is continuously washed or rinsed.

[0065]

As described above, according to the washing machine of the present invention, the connector provides the power for washing or rinsing and spinning.
A simple structure that can be connected or cut off and moved up and down by the buoyancy part reduces assembly work and time, thereby improving work efficiency, reducing manufacturing costs, and producing significant noise during washing and dehydration. It has the effect of being able to reduce.

Further, when the door is opened, the washing and rinsing are performed by rotating the driving means at a low speed within a range where the rotation of the driving means is not stopped, so that there is an excellent effect that the stability in use is enhanced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a normal washing machine.

FIG. 2 is a longitudinal sectional view showing a conventional washing machine.

FIG. 3 is a longitudinal sectional view showing another conventional row of washing machines.

FIG. 4 is a longitudinal sectional view showing a power unit during washing according to the present invention.

FIG. 5 is a longitudinal sectional view showing a power unit during dehydration according to the present invention.

FIG. 6 is a control block diagram of a driving unit of the washing machine according to the present invention.

FIG. 7 is a flowchart showing a washing and rinsing process according to the present invention.

[Explanation of symbols]

 Reference Signs List 60 driving means 70 driving shaft 70a hollow portion 71 lower drum portion 71a insertion portion 73 upper drum portion 77 planetary gear 80 connector 81 upper shaft 81a concave groove 83 lower shaft 84 projecting portion 93 washing shaft 100 washing tub 101 dehydration tub 103 pulsator 104 projection Set part 105 Rib 106 Lid member 106a Hole 107 Buoyancy member 108 Packing 110 Rod 110a Circular bar 111 Cam member

Claims (13)

[Claims] 1. A washing machine having a door for transmitting motive power of a driving means to rotate a pulsator and a dewatering tub to perform washing and rinsing or dewatering. A buoyancy member, clutch means for switching the power so that the pulsator and the dewatering tub are rotated in the same direction by transmitting the power of the driving means for dewatering when the buoyancy member descends; A planetary gear that receives the power of the clutch means for washing and rinsing when ascending and switches the power so that the dewatering tub rotates in the direction opposite to the rotation direction of the pulsator, and can detect whether the door is open or not. A door opening sensor, and control means for receiving a detection signal of the door sensor.
A washing machine, comprising: a motor drive unit that changes the speed of the drive unit according to the control of the control unit. 2. The clutch means includes a connector rotatably connected to the pulsator and raised and lowered by a lifting and lowering movement of the buoyancy member, and a lower drum portion attached to and detached from the connector and driven by a drive source. The washing machine according to claim 1, wherein: 3. The washing machine according to claim 2, wherein the connector and the lower drum are provided with corresponding protrusions and inserts, respectively. 4. The washing machine according to claim 2, wherein the connector is driven by transmitting the power of a driving unit from a driving shaft mounted at a lower center of the washing machine. 5. The washing machine according to claim 4, wherein an inner periphery of the drive shaft and an outer periphery of a lower portion of the connector have a polygonal shape. 6. The washing machine according to claim 2, wherein the connector is connected to the buoyancy member by a rod so as to be moved up and down by the elevating movement of the buoyancy member. 7. A rod formed at the lower end of the rod so as to be mounted in a concave groove formed at an upper end of the connector, and a rod is mounted so as not to be detached from the groove. The washing machine according to claim 6, further comprising: 8. The buoyancy member includes a protruding portion formed on the pulsator, and a lid member mounted on an upper end of the protruding portion and having a plurality of holes formed therein for allowing washing water to flow therethrough. The washing machine according to claim 1, wherein the washing machine is operated. 9. The protrusion is provided with a leave formed in the center of one side thereof, and a packing mounted around an upper end of the leave to prevent washing water from flowing into the washing shaft. The washing machine according to claim 8, characterized in that: 10. The buoyancy unit is configured to store water instantaneously when the washing water flows into a plurality of holes formed in the lid member and to quickly lower the buoyancy member to perform dewatering. 2. An inclined portion is provided at an upper end.
A washing machine according to claim 1. 11. The washing machine according to claim 1, wherein the planetary gear is mounted between a connector of the clutch means and an upper drum of the dewatering tub. 12. A user enters the laundry into the spin-drying tub after opening the door, then closes the door and presses a start button, and performs a washing or rinsing step. When the control means receives the sensing signal of the door opening sensing unit to determine whether or not the door is open, and when the door is closed at the step, the rotation of the driving means is continued at a normal speed, and when the door is open, The control means recognizes this and generates a control signal to the motor drive unit to reduce the speed of the drive means, and a step of determining whether the washing or rinsing time has passed a set time, The method of controlling a washing machine, wherein the washing or rinsing process is continued if the time set in the step has not elapsed, and if the time has elapsed, the entire washing or rinsing process is terminated. 13. The step of performing the washing or rinsing may include performing the washing or rinsing by rotating the washing tub in a direction opposite to the direction of rotation of the pulsator that rotates forward and backward by receiving the driving of the driving unit. The method for controlling a washing machine according to claim 12, wherein