KR20030078602A - Method of control for clutch of single vessel type of washing machine - Google Patents

Abstract

The present invention prevents this from becoming a load of clutch switching even when the laundry is in the washing and dewatering tank when the transition from the washing stroke to the dehydrating stroke, the dehydrating stroke to the washing stroke, or when the clutch is switched. And a clutch control method of a sun-dried washing machine that ensures switching between the clutch pin and the hole provided in the clutch piece, prevents the laundry from acting as a clutch, and prevents shock noise or damage to the clutch portion caused by clutch engagement. As a means for this, as a means for this, by reducing the rotation of the motor to rotate the washing shaft is connected to the rotary blades, and the rotation of the motor to one of the washing shaft and the dehydration shaft is connected to the washing and dehydrating tank and the washing shaft Rigid-type laundry provided with engagement clutch mechanism by combination of clutch piece and clutch pin In the switching clutch in a state in which entry of water toward the side washing or dewatering in the washing and dewatering tank on and performs the detection of things in a conversion.

Description

Clutch control method of solar type washing machine {METHOD OF CONTROL FOR CLUTCH OF SINGLE VESSEL TYPE OF WASHING MACHINE}

The present invention relates to a clutch control method of a solar automatic washing machine.

(Conventional technology)

In this solar type automatic washing machine, as shown in FIG. 4, for example, as illustrated in FIG. 4, the water tank 2 is freely installed in the outer case 1, and the washing and dewatering tank is installed in the water tank 2. (3) is provided in rotation freely, and the rotary blade 4 is provided in the bottom of this washing | cleaning and dehydration tank 3. As shown in FIG.

Then, the washing shaft connected to the rotary blade 4 is connected to the motor 5 through the reduction mechanism, and the dehydrating shaft connected to the washing / dehydrating tank 3 is connected to the washing shaft through the clutch device 6, In the rinsing operation, only the rotary blade 4 is rotated at a low speed, the vortex is generated in the washing and dehydrating tank 3 to wash and rinse. In the dehydration operation, the dehydration shaft is connected to the washing shaft, and the rotary blade 4 and The washing and dewatering tank 3 is rotated at the same time at high speed, and the water in the laundry and the dewatering tank 3 is dispersed by centrifugal force.

In the figure, reference numeral 7 denotes a control unit incorporating a microcomputer for setting and controlling washing contents and the like, 8 a water supply valve, and 9 a drain valve provided in a drain pipe.

As shown in Figs. 2 and 3, the clutch device 6 is combined with the lower portion of the reduction mechanism 10 by the planetary gear and employs a pin clutch structure. Using a variable speed motor such as a brushless motor, the rotary blade 4 is connected to the tip of the main shaft 11a, which is the tip of the washing shaft 11, which is the motor shaft of the motor 5, and the washing shaft ( The clutch piece 12 is fixed to the base part of the main shaft lower part 11b which is a base part of 11 by press-fitting. This clutch piece 12 provided the hole 13 of several (6 in the example shown) at appropriate intervals. Reference numeral 27 in the figure shows the main bearing.

With the bearings 14 and 15, the dehydration shaft 16 can be freely rotated on the outer side of the washing shaft 11, and the washing and dewatering tank 3 is fixed to the tip of the dewatering shaft 16. The plunger 17 provided with the magnet 20 which functions as a clutch in the base part is fixed. The plunger 17 is freely combined with the upper and lower motions through the spring 19 on the upper side of the clutch piece 12. The plunger 17 is located at a position corresponding to the hole 13 to protrude the clutch pin 18 downward. Installed.

The solenoid coil 21 is provided in the position which opposes the magnet 20 from the outer side of the plunger 17, and covers the circumference of these plunger 17 and the solenoid coil 21 with the coil case 22, and the upper part is It is closed by the coil cover 23.

In the figure, reference numeral 24 denotes a sensor magnet provided around the clutch piece 12, and 25 denotes a rotation sensor attached to the sensor mounting table 26 to detect rotation of the washing shaft 11 and the dewatering shaft 16. As shown in FIG.

Next, the operation will be described. In order to perform washing or rinsing, when the contents of the washing stroke and the rinsing stroke are set by operating the operation unit, the solenoid coil 21 is energized by the output from the control unit 7, and the magnet of the plunger 17 ( 20 is sucked by the solenoid coil 21 and moved upward, and the clutch pin 18 comes out of the hole 13 of the clutch piece 12, and the dehydration shaft 16 and the washing shaft 11 are coupled. Is released, and the clutch is switched from the dewatering side to the washing side.

When the water supply valve 8 is operated to feed water into the washing and dewatering tank 3, when the motor 5 is energized, only the washing shaft 11, which is a motor shaft, rotates, and the rotary blade 4 rotates at low speed to perform washing operation. Or rinsing operation is performed.

When the water flow from the washing process or the rinsing cycle to the dehydrating stroke is opened, the drain valve 9 is opened, and when the water in the washing and dehydrating tank 3 is discharged from the drain pipe, the solenoid coil 21 is provided with a washing stroke or a rinsing stroke. Current flows in the opposite direction, and as a result, the plunger 17 moves downward, the clutch pin 18 is inserted into the hole 13 provided in the clutch piece 12, and the clutch is engaged.

Thereby, the dehydration shaft 16 to which the plunger 17 is fixed, and the washing shaft 11 to which the clutch piece 12 is fixed are connected, and a clutch is switched from the washing side to the dehydration side. Accordingly, the rotation of the motor 5 is simultaneously transmitted to the washing shaft 11 and the dewatering shaft 16, and the rotary blade 4 and the washing and dewatering tank 3 rotate at the same time at high speed, thereby allowing the inside of the washing and dewatering tank 3 to rotate. The water in the laundry is dehydrated by centrifugal force.

By the way, the moment of inertia of rotation of each of the rotary blade 4 and the washing and dewatering tank 3 is used to determine whether the clutch is completely switched when moving from the washing stroke or the rinsing stroke to the dehydrating stroke. That is, when engaging the clutch to shift to the dewatering stroke, first, after lowering the plunger 17 and energizing the motor 5 for a short time, the hole 13 provided in the clutch pin 18 and the clutch piece 12 is provided. , The position of the clutch is detected.

In this case, as shown in FIG. 5, when the clutch engages normally, the washing and dewatering tank 3 has a larger moment of inertia than the rotary blade 4 (it is difficult to start at start and hard to stop at stop). By detecting this moment of inertia, it is possible to determine that the clutch is completely engaged, and to move to the dehydrating stroke.

When moving from the washing stroke to the dehydrating stroke, the dehydration shaft 16 is not yet coupled to the washing shaft 11, and the washing and dewatering tank 3 is in a free state. In the case where the amount of the laundry in the washing-and-dehydrating tank 3 is large in this state, if the wet laundry containing the water before dehydration is placed on the rotary blade 4 after washing or rinsing is finished and drained, The load becomes the load and the rotary blade 4 and the washing and dehydrating tank 3 move together. As a result, the gap between the clutch pin 18 and the clutch piece 12 did not generate | occur | produce, and clutch switching could not be performed.

If the clutch cannot be switched, the laundry acts as a clutch when detecting the subsequent switch, and the hole 13 provided in the clutch pin 18 and the clutch piece 12 is actually engaged. Even if the clutch is still on the washing side, the moment of inertia of the washing and dehydrating tank 3 is larger than that of the rotary blade 4, so that the clutch is engaged to the dehydrating side, and the process shifts to the dehydrating stroke. .

In this state, when the process shifts to the dehydration stroke and the laundry moves to the circumferential wall side of the washing and dewatering tank 3 by the centrifugal force, the moment when the laundry moves to the circumferential wall side of the washing and dewatering tank 3. Therefore, since the washing and dehydrating tank 3 in the free state is intended to stop while the rotary blade 4 continues to rotate, the hole 13 provided in the clutch pin 18 and the clutch piece 12 is provided. The clutch is engaged. At this time, there may be a sound generated by the impact or a damage to the clutch portion.

The object of the present invention is to eliminate the irrationality of the conventional example, to shift the clutch from the washing stroke to the dehydrating stroke, or to switch the clutch when switching from the dehydrating stroke to the washing stroke, even if the laundry is in the washing and dewatering tank. Prevents the load from being switched, ensures the switching between the clutch pin and the hole provided in the clutch piece, prevents the laundry from acting as a clutch, and prevents the occurrence of impact noise or damage to the clutch portion due to clutch engagement. It is to provide a clutch control method of a breakfast washing machine.

(Means to solve the task)

The present invention, in order to achieve the above object, by reducing the rotation of the motor to rotate the washing shaft is connected to the rotating blade, and the rotation of the motor is switched to any one of the dehydration shaft and the washing shaft connected to the washing and dehydration tank In the solar type washing machine provided with the engagement clutch mechanism by the combination of the clutch piece and the clutch pin, the clutch is switched to the washing side or the dehydrating side in the state where water is in the washing and dewatering tank, and the switch is detected. It was made.

Therefore, even if there is laundry in the washing and dewatering tank, since the laundry remains in the water, the rotary blade and the washing and dewatering tank are not coupled with the laundry in between, and the clutch is switched in this state. The gap between the piece and the clutch pin can be surely crossed, and the changeover can be secured. As a result, the changeover can be detected accurately, and the occurrence of impact sound and damage to the clutch portion due to clutch engagement can also be prevented.

In addition, after the water is supplied to a predetermined water level, the clutch is switched from the dewatering side to the washing side, and the switch is detected so that the clutch is dewatered reliably at the stage before starting the washing administration and while the laundry is floating in the water. It can switch from washing side to washing side. In addition, since the detection of the switch after the switching is performed reliably, accurate detection can be performed.

In addition, by switching the clutch from the dewatering side to the washing side during water supply and detecting the changed, the clutch is reliably switched from the dehydrating side to the washing side at the stage before the washing administration and in the state where the laundry floats in the water. can do. In addition, since the detection of the switch after the switching is performed reliably, accurate detection can be performed.

After the washing or rinsing cycle is finished, the clutch is switched from the washing side to the dehydrating side before draining, and the switched object is detected so that the laundry is floated in the water before the draining and at the stage before starting the dehydrating stroke. The clutch can be switched from the washing side to the dehydrating side. In addition, since the detection of the switch after the switching is performed reliably, accurate detection can be performed.

After the washing or rinsing cycle is finished, the clutch is switched from the washing side to the dehydrating side during the drainage, and the switched object is detected, so that the laundry is floating in the water during the drainage process at the stage before the dehydration stroke is started. The clutch can be reliably switched from the washing side to the dehydrating side. In addition, since the detection of the switch after the switching is performed reliably, accurate detection can be performed.

1 is a flowchart of a clutch switching operation showing an embodiment of a clutch control method of a solar type washing machine of the present invention.

Figure 2 is a longitudinal front view of the clutch device in which the clutch control method of the present invention solar type washing machine is implemented.

3 is an exploded perspective view of a clutch device to which the clutch control method of the invention-type washing machine is implemented.

4 is an explanatory diagram of a solar type washing machine.

5 is a graph showing the rotational load of the rotary blade and the washing and dewatering tank at the time of switching the clutch from the washing step to the dewatering step.

(Explanation of symbols for the main parts of the drawing)

1: outer case 2: water tank

3: washing and dewatering tank 4: rotating blade

5: motor 6: clutch device

7: control unit 8: water supply valve

9: drain valve 10: reduction mechanism

11: washing shaft 11a: main shaft

11b: spindle 12: clutch

13: hole 14, 15: bearing

16: deshrink 17: plunger

18: clutch pin 19: spring

20: magnet 21: solenoid coil

22: coil case 23: coil cover

24: sensor magnet 25: rotation sensor

26: sensor mounting 27: main bearing

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described in detail with reference to drawings. 1 is a flowchart showing a clutch switching operation of a clutch control method of a solar type washing machine according to the present invention, wherein the clutch structure to which the method of the present invention is implemented is described with reference to FIGS. Since it has already been described with respect to Fig. 4, detailed description thereof will be omitted.

The clutch device 6 of the present invention is also combined with the lower portion of the reduction mechanism 10 by planetary gears as shown in Figs. 2 and 3 as an example, and employs a pin clutch structure. For example, a variable speed motor such as a DC brushless motor is used, and the rotary blade 4 is connected to the distal end of the main shaft 11a which is the distal end of the washing shaft 11 which is the motor shaft of the motor 5. At the same time, the clutch piece 12 is fixed to the base part of the main shaft lower part 11b which is the base part of the washing shaft 11 by press-fitting. The clutch piece 12 was provided with a plurality of holes 13 (6 in the illustrated example) at appropriate intervals. Reference numeral 27 in the figure shows the main bearing.

The bearings 14 and 15 provide the dehydration shaft 16 with rotation freely on the outer side of the washing shaft 11, and fix the washing and dewatering tank 3 to the tip of the dewatering shaft 16. And the plunger 17 provided with the magnet 20 which functions as a clutch in the base part is fixed. The plunger 17 is freely combined with the upper and lower motions through the spring 19 on the upper side of the clutch piece 12. The plunger 17 is located at a position corresponding to the hole 13 to protrude the clutch pin 18 downward. Installed.

The solenoid coil 21 is provided in the position which opposes the magnet 20 from the outer side of the plunger 17, and covers the circumference of these plunger 17 and the solenoid coil 21 with the coil case 22, and the upper part is It is closed by the coil cover 23.

Next, the operation of the flowchart of FIG. 1 will be described. In order to wash or rinse the laundry, after putting the laundry into the washing and dehydrating tank 3, and operating the operation unit to set the contents of the washing stroke and the rinsing stroke, the water supply valve is output by the output from the control unit 7. (8) is operated to feed water into the washing and dewatering tank 3 (step 1).

In the present invention, when water enters the washing and dewatering tank 3 in the middle of the water supply or after completion of water supply to the set water level, the clutch is switched from the dewatering side to the washing side when the laundry is in the water (step 2). ). This switching is energized by the solenoid coil 21, the magnet 20 of the plunger 17 is attracted by the solenoid coil 21, and moves upwards, and the clutch pin 18 moves the hole (of the clutch piece 12). 13, and the coupling | bonding of the dehydration shaft 16 and the washing | cleaning shaft 11 is performed, and a clutch is switched from a dehydration side to a washing side by this.

This clutch switching is performed in the state in which the water enters the washing-and-dehydrating tank 3 and the laundry is floating in the water as described above, so that the laundry is made of the rotary blade 4 or the washing-and-dehydrating tank 3. When the load is placed on the laundry, the rotating blade 4 and the washing / dehydrating tank 3 can be prevented from rotating together with the laundry in between. Therefore, the amount of shift | deviation between the clutch pin 18 and the hole 13 of the clutch piece 12 can be produced, and clutch switching can be reliably performed.

After the clutch is switched, the clutch is switched (step 3). However, as described above, since the clutch is reliably switched, the detection of the change can be detected, and the clutch is not switched to the washing side. The washing administration can be prevented from starting in the state of stay. Therefore, when the motor 5 is energized, only the washing shaft 11, which is the motor shaft, rotates, and the rotary blade 4 rotates at low speed to perform washing operation or rinsing operation (step 4).

In the transition from the washing process or the rinsing stroke to the dehydrating stroke, the drain valve 9 opens, and the water in the washing and dehydrating tank 3 is discharged from the drain pipe. However, in the present invention, at the stage before the drainage or in the middle of the drainage. When water is still in the washing and dewatering tank 3, the clutch is switched from the washing side to the dehydrating side (step 5). That is, in this step, the solenoid coil 21 flows a current in a direction opposite to that of the washing stroke or the rinsing stroke. As a result, the plunger 17 is moved downward, the clutch pin 18 is inserted into the hole 13 provided in the clutch piece 12, and the clutch engages.

Even at this time, the water is still in the washing and dehydrating tank 3 before draining, and the washing is carried out while the laundry is floating in the water. Thus, the laundry is placed on the rotary vane 4 or the washing and dehydrating tank 3 to wash the laundry. By this load, it is possible to prevent the rotary blade 4 and the washing / dehydrating tank 3 from rotating together with the laundry in between. Therefore, the displacement between the clutch pin 18 and the hole 13 of the clutch piece 12 can be produced, and the dehydration shaft 16 to which the plunger 17 is fixed, and the clutch piece 12 are fixed. The washing shaft 11 is connected, and the clutch can be switched reliably.

After the clutch is switched, the clutch is switched (step 6), but since the clutch is reliably switched as described above, the detection of the change can be detected and the clutch is not switched to the dehydrating side. The dehydration administration can be prevented from starting in the state of stay.

Therefore, the water is drained next (step 7), and the dehydration stroke starts (step 8). In this dewatering stroke, rotation of the motor 5 is simultaneously transmitted to the washing shaft 11 and the dewatering shaft 16, and the rotary blade 4 and the washing and dewatering tank 3 rotate at the same time at a high speed to wash and dewater the tank. Moisture of the laundry in (3) is dehydrated by centrifugal force.

As described above, the clutch control method of the solar type washing machine of the present invention includes a deceleration mechanism for decelerating the rotation of the motor to rotate the washing shaft to which the rotary blade is connected, and a dehydration shaft for the rotation of the motor to which the washing and dehydration tank is connected. In the sun-dried washing machine provided with the engagement clutch mechanism by the combination of the clutch piece and the clutch pin which switch to any one of the said washing shafts, A clutch is switched to the washing | cleaning side or the dehydrating side in the state in which water enters in the said washing and dehydration tank, The detection of the changed thing was carried out.

Therefore, even if there is laundry in the washing and dewatering tank, since the laundry is floating in the water, the rotary blade and the washing and dewatering tank are not coupled with the laundry in between, and the clutch is switched in this state. The gap between the piece and the clutch pin can be reliably staggered, so that the switching can be secured. As a result, the changeover can be detected accurately, and the occurrence of impact sound and damage to the clutch portion due to clutch engagement can also be prevented.

After supplying water to a predetermined water level, the clutch is switched from the dewatering side to the washing side, and the switch is detected so that the clutch can be reliably removed from the dewatering side at the stage before the washing operation is started and in the state where the laundry is floating in the water. I can switch to the washing side. In addition, since the detection of the switch after the switching is performed reliably, accurate detection can be performed.

In addition, by switching the clutch from the dewatering side to the washing side during water supply and detecting the changed, the clutch is reliably switched from the dehydrating side to the washing side at the stage before the washing administration and in the state where the laundry floats in the water. can do. In addition, since the detection of the switch after the switching is performed reliably, accurate detection can be performed.

After the washing or rinsing cycle is finished, the clutch is switched from the washing side to the dehydrating side before draining, and the switched object is detected so that the laundry is floated in the water before the draining and at the stage before starting the dehydrating stroke. The clutch can be switched from the washing side to the dehydrating side. In addition, since the detection of the switch after the switching is performed reliably, accurate detection can be performed.

After the washing or rinsing cycle is finished, the clutch is switched from the washing side to the dehydrating side during the drainage, and the switched object is detected, so that the laundry is floating in the water during the drainage process at the stage before the dehydration stroke is started. The clutch can be reliably switched from the washing side to the dehydrating side. In addition, since the detection of the switch after the switching is performed reliably, accurate detection can be performed.

Claims (3)

Combination of a clutch piece and a clutch pin which decelerate the rotation of the motor to rotate the washing shaft to which the rotary blade is connected, and the clutch piece to switch the rotation of the motor to one of the washing shaft and the dehydration shaft to which the washing and dehydrating tank is connected. In the solar type washing machine provided with the engagement clutch mechanism by, A clutch control method for a solar type washing machine, wherein the clutch is switched to the washing side or the dehydrating side in a state where water is in the washing and dewatering tank, and the switched object is detected. The method of claim 1, A clutch control method for a solar type washing machine, wherein after switching to a predetermined water level, the clutch is switched from the dewatering side to the washing side, and the switch is detected. The method of claim 1, A clutch control method for a solar type washing machine, wherein the clutch is switched from the dewatering side to the washing side during water supply and detection of the changed one is performed.