JPH03228795A - Washing machine - Google Patents

Abstract

PURPOSE:To correctly and quickly stop an inner tub at the fixed position where the opening of a case main body and the inlet/outlet of the inner tub match by providing a control means which rotates a tub driving motor at a low speed to rotate the inner tub at a low speed and cuts off the excitation of the tub driving motor to stop the inner tub at the fixed position when a detector detects the second detected object. CONSTITUTION:The interval from the second magnet 106 to the first magnet 104 is set with the distance used as a yardstick that the second magnet 106 reaches the vicinity of an inner tub position sensor 105 after the first magnet 104 passes the inner tub position sensor 105 serving as a detector made of a hole element and an inner tub driving motor 51 is stopped and an inner tub 30 is moved by inertia while the laundry of a load quantity presumably used normally to shorten the low-speed rotating time after the inertial rotation of the inner tub 80 to the extent possible is stored in the inner tub 30 and the inner tub 30 is positively rotated. The program to control the whole operation of a dehydration-drying washing machine, a memory 107 to store the set data of the operating time such as washing, rinsing, dehydration and drying and a timer 108 are stored in a central processing unit 111.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a washing machine in which an inner tub rotatably supported within an outer tub can be stopped in a predetermined position.

[Prior Art] The inventors of this application have already invented a dehydrating washing machine as described below. This dehydrating washing machine has an outer tank that can contain water inside the case body, a support that can rotate around a vertical axis inside the outer tank, and a support that can hold the laundry. The structure is such that an inner tank for accommodating the water is rotatably arranged around a horizontal axis.

The laundry is washed by rotating the inner tub around the horizontal axis while supplying water to the exterior so that the water level reaches the interior of the inner tub containing the laundry. It has become. Also, after draining the water in the outer tank 1. The laundry is dehydrated by rotating the support body together with the inner tub at high speed around the vertical axis.

[Problems to be Solved by the Invention] However, in the above-mentioned washing machine, in order to facilitate loading and unloading of laundry, the washing machine is stopped at a position that corresponds precisely to the laundry entrance/exit of the inner tub or the opening provided in the main body case. It is required that

The present invention has been made to solve the above-mentioned problems, and provides a washing machine that can accurately and quickly stop the inner tub at a fixed position corresponding to the opening of the case body and the entrance/exit of the inner tub. It is about providing.

[Means for Solving the Problems] In order to achieve this object, the present invention has a case body of a washing machine, an outer tank provided in the case body for storing water, and a case body provided in the case body for storing water. an inner tub that is rotatably supported around a horizontal axis or an inclined axis that is inclined at a predetermined angle with respect to the horizontal axis, has a large number of small holes in the peripheral wall, and is capable of accommodating laundry; A tank driving motor rotates around a horizontal axis or a tilted axis, two objects to be detected arranged around the outer circumference of the inner tank, and a motor mounted on the case body or the outer tank to detect these objects a detecting body provided, a signal generating means for generating an inner tank rotation stop signal, and based on the generation of the inner tank rotation stop signal, the supply of electricity to the seed part movement motor is cut off to temporarily stop the inner tank, and then the inner tank is temporarily stopped; The tank driving motor is energized to rotate the inner tank in one direction again, and when the detection object detects the one object to be detected, or immediately thereafter, the power to the tank driving motor is cut off and the inner tank is rotated. After a predetermined period of time, the tank drive motor is energized again to rotate the inner tank at low speed, and when the detection object detects another object, the tank drive motor is turned on again. It is comprised of a control means for cutting off electricity and stopping the inner tank at a fixed position.

[Function] The present invention having the above configuration stops the inner tank once the inner tank rotation stop signal is output from the signal generating means in a state where the inner tank is normally rotating around the horizontal axis, Thereafter, the inner tank is rotated in one direction again, and one of the objects to be detected provided in the inner tank is detected by the detection body located on the fixed side.

Immediately after the detection operation, the power supply to the tank drive motor is cut off, the inner tank is rotated by inertia, and after a predetermined period of time has elapsed after this inertia rotation has started, the power is supplied to the tank drive motor again, and the other part of the motor is activated. is rotated at low speed to rotate the inner tank at low speed. Further, when the object to be detected or another object to be detected is detected, the power supply to the drive motor is cut off again, and the inner tank is stopped at a predetermined position.

[Example] Hereinafter, an example embodying the present invention will be described with reference to the drawings.

(Related structure of the case body, outer tank, and inner tank) As shown in Figs. 3 and 4, the case main body 1 is formed of an iron plate into a box shape, and has an opening at the top for loading and unloading laundry. 3 is attached to the main body cover 2. The main body opening/closing lid 4 is attached to the opening 3 of the main body cover 2 by a support shaft 5 at the rear end so as to be able to open and close, and the bottom surface of the main body opening/closing lid 4 is designed to prevent hot air, moisture, or noise from leaking outside when the lid is closed. A gasket 6 is attached.

The locking member 7 is supported at the front inside the main body cover 2, and is normally biased by a spring in the direction of separating from the main body opening/closing lid 4. When a solenoid (not shown) is energized, the locking member 7 moves to the closed position to open/close the main body. When engaged with the lid 4, the main body opening/closing lid 4 is locked in the closed position.

The outer tank 15 for storing selected water is made of synthetic resin and is formed into a substantially bottomed cylindrical shape, and swings into the case body 1 in the axial and radial directions via buffer support devices (not shown) at four locations. Can be hung and supported. The outer tank cover 16 is attached to the upper part of the outer tank 15, and an opening 17 facing the opening 3 of the main body cover 2 is formed in the upper front surface of the outer tank cover 16. A flexible cylindrical shield member 18 is installed between the peripheral edges of the opening 3 of the main body cover 2 and the opening 17 of the outer tank cover 16, and is always connected to both openings 3 regardless of the swinging of the outer tank 15. , 17 in an airtight state, and the outer tank 1
Hot air and moisture inside 5 are prevented from entering between the outer tank 15 and the case body 2.

The inner tank 21 is made of synthetic resin and has a bottomed cylindrical shape that is almost similar to the outer tank 15, and has an annular balancer 2 at its upper end.
2 is attached. The center of the bottom of the inner tank 21 is formed by a support plate 23 made of iron plate for reinforcement, and a hollow soil shaft 24 is fixedly protruding from the lower surface of the support plate 23 . The inner tank 21 is rotatably supported within the outer tank 15 around the vertical axis Y-Y by a bearing 26, with the soil hollow shaft 24 passing through the bottom of the outer tank 15 via the seal member 25. has been done.

A large number of small holes 27 for draining water are provided through the peripheral wall and bottom wall of the inner tank 21 and the support plate 23 at predetermined intervals. Further, the pair of bearing portions 28 are formed approximately in the middle of the peripheral wall of the inner tank 21 so as to face each other in the front and rear.

(Related structure of the inner tank) The inner tank 30 for storing laundry therein is made of synthetic resin and is formed into a substantially spherical shape, and short cylindrical shaft parts 31 are integrally protruded from both outer surfaces of the inner tank 30. It is formed. A protective net 32 is attached to the rear shaft portion 31 to prevent laundry from flying out in the inner tub 30, and the rear shaft portion 31 and the bearing portion 28 also serve as an air outlet. A protective net 33 is also provided on the front hollow shaft portion 31.

By fitting both shaft portions 31 into the bearing portions 28 of the inner tank 21, the inner tank 30 is rotatably supported within the inner tank 21 around the horizontal axis XX.

A pair of laundry reversing protrusions 34 are formed on the inner circumferential surface of the inner tub 30 at a predetermined interval so as to extend substantially parallel to the rotational axis of the inner tub 30.

A large number of small holes 35 are formed through the peripheral wall of the inner tank 30 at predetermined intervals. Doorway 36 for loading and unloading laundry
are the opening 3 of the main body cover 2 and the opening 17 of the outer tank cover 16.
It is formed on the peripheral wall of the inner tank 30 so as to face the inner tank 30 .

As shown in FIG. 3, the lid body 37 is integrally formed of synthetic resin and has a cover portion 37a and a pair of support leg portions 37b, and a large number of small holes 38 are formed in the cover portion 37a. A pair of shaft portions 39 are formed to protrude from the outer end surfaces of both support legs 37b, and by engaging both shaft portions 39 with a pair of bearing portions 40 provided on the peripheral wall of the inner tank 30, the lid body 37 is opened. It is attached to the inside of the entrance/exit 36 of the inner tank 30 so that it can be rotated to open and close. The laundry reversing protrusion 41 is formed on the inner surface of the cover portion 37a of the lid 37 so as to extend substantially parallel to the rotational axis of the inner tub 30, and is spaced apart from other protrusions 34 of the inner tub 30 by a predetermined distance. They are placed opposite each other.

The four mounting portions 42 are formed on the outer surface of the end portion of the cover portion 37a of the lid body 37. The locking member 43 is rotatably supported in the mounting recess 42 by a support shaft 44 at an intermediate portion thereof, and is normally biased by a spring 45 in a direction to engage with the opening edge of the entrance/exit port 36, and this engagement closes the lid. Body 37 is locked and held in the closed position. In this embodiment, the cover part 37a of the cover body 37 is formed to be larger than the opening area of the entrance/exit port 36 of the inner tank 30, and the turning radius of the cover part 37a of the cover body 37 has a spherical shape. As shown in FIG.
The entrance/exit 36 is closed with the cover part 37a of the lid body 37 engaged with the inner surface of the opening of the entrance/exit 36, and the cover part 37a of the lid body 37 is closed.
7a is rotated into the inner tank 30, and the entrance/exit 36 is opened.

(Driving structure of the inner tank and the middle tank) The wave gear 46 is integrally formed on the outer peripheral surface of the inner tank 30. A tank driving motor 51 capable of forward and reverse rotation is attached to the lower surface of the outer tank 15 via a bracket (not shown) or the like, and a driving pulley 53 equipped with a motor cooling fan 52 is fixed to the motor shaft.

The support plate 5 is attached to the tank driving motor 51 so that the hollow shaft 54 is located below and on the same axis as the hollow earth shaft 24.
5 and a bearing 56, and is connected to the earth hollow shaft 24 via a brake drum support case 57. The rotary drive shaft 58 is supported through the earth hollow shaft 24, the brake drum support case 57, and the above-mentioned hollow shaft 54 through support metal so as to be relatively rotatable, and a cylindrical clutch joint 59 and the drive pulley are attached to the lower end of the rotary drive shaft 58. Held 6 to 53
The driven pulleys 61 connected to each other via 0 are also fixed.

A pinion 63 is fixed to the upper end of the rotary drive shaft 58. A gear cover 64 made of synthetic resin is disposed on the support 23 at the inner bottom of the inner tank 21 via a packing 65 in a watertight manner. A transmission shaft 66 extending in the lateral direction is rotatably supported within the gear cover 64 via a bearing 67, and a hypoid gear 68 that meshes with the pinion 63 within the gear cover 64 is fixed to one end thereof, and a hypoid gear 68 that meshes with the pinion 63 within the gear cover 64 is fixed to the other end. Six drive gears that mesh with driven gears 46 on the outer periphery of the inner tank 30 are fixed below the inner tank 30.

The spring clutch 71 is provided astride the above-mentioned empty shaft 54 and the clutch joint 59, and when the clutch pawl 72 is disengaged from the clutch housing 73, the rotational drive shaft 58
and the idle shaft 54 are operatively connected via the spring clutch 71, and when the clutch pawl 72 or the clutch housing 73 is engaged, the rotational drive shaft 58 and the idle shaft 54 are disconnected. The brake drum 74 is provided on the outer periphery of the brake drum support case 57.
By joining the brake body 75 to 4, the inner tank 21
The rotation of the shaft is braked together with the upper and lower hollow shafts 24 and 54.

During washing, rinsing, and drying, the splash clutch 71 is in a disconnected state and the brake body 75 is in a disconnected state.
The tank drive motor 51 is rotated, the drive pulley 53, the belt 60, the driven pulley 61, and the rotation drive shaft 5 are in a braking state.
8, pinion 63, hypoid gear 68, transmission shaft 66,
The deceleration is transmitted to the inner barrel 30 via the driving gear 69 and the driven gear 46, and the inner barrel 30 is rotated around the horizontal axis XX.

Further, during dewatering, the spring clutch 71 is in a connected state and the brake body 75 is in a non-braking state, and the rotation of the tank driving motor 51 is controlled by the drive pulley 53, belt 60,
Driven pulley 61, rotational drive shaft 58, spring clutch 71,
Rotation is transmitted to the inner tank 21 at the same speed and in the same direction through the upper shaft 54, the brake drum support case 57, and the earth hollow shaft 24, and the inner tank 21 and the inner tank 30 are integrally rotated along the vertical axis Y-.
Rotates around Y at high speed.

(Water Supply, Drainage, and Overflow Configuration) The water supply device 81 is disposed inside the main body cover 2 and includes a water supply valve (not shown) and a water supply port 82 opened near the outer circumferential upper surface of the inner tank 30. There is. During water supply and rinsing, the water supply port 8 is opened by opening the water supply valve.
Water is supplied from the inner tank 2 toward the outer peripheral surface of the inner tank 30.

A drain port 84 is provided at the bottom of the outer tank 15, and a drain valve 8
5 to a drain hose 86. and,
In this embodiment, the drain valve 85 is opened and closed in conjunction with the clutch pawl 72 of the spring clutch 71 and the brake body 75, and when the spring clutch 71 is in the disconnected state and the brake body 75 is in the braking state, such as during washing, etc. , drain valve 85
is closed, and when the spring clutch 71 is in the engaged state and the brake body 75 is in the non-braking state during dewatering or the like, the drain valve 85 is opened.

The overflow hose 87 is connected to an overflow port (not shown) provided on the peripheral wall of the outer tank 15 that also serves as a hot air exhaust port, and is connected to the drain hose 86 at its lower end. When water is supplied into the outer tank 15 by the water supply device 81, the normal water level Wn at rest during rinsing is set at a position corresponding to the overflow port, as shown by the chain line in FIG.

The expansion cooling chamber 88 is provided in the middle of the overflow hose 87, and the expansion cooling chamber 88, the drain hose 86, and the overflow hose 87 cool the hot and humid air discharged from the overflow port through the overflow hose 87 during drying. and dehumidify.

(Configuration of /M Air Supply Device) A hot air generation source 95 constituting a hot air supply device 94 as a heating means is connected to the case body 1 and the body cover above the outer tank 15, the inner tank 21, and the inner tank 30. 2, and has a fan motor 96, a fan 97, and a heating heater 98.

A hot air supply passage 99 of the hot air supply device 94 is integrally formed on the rear surface of the outer tank 15 and the outer tank cover 16, and is connected to the hot air generation source 95 via a flexible bellows-shaped connecting cylinder 100. connected. The air outlet 101 is connected to the rear bearing part 28 of the inner tank 21 and the rear shaft part 3 of the inner tank 30, which also serves as the above-mentioned air outlet.
It is formed on the rear wall of the outer tub 15 at the lower end of the hot air supply passage 99 so as to be close to and opposite to the hot air supply passage 94, and when drying laundry, the warm air supplied from the hot air supply device 94 is Mouth 10
1 to the inner tank 3 through the rear bearing part 28 and the rear shaft part 31.
Introduced into 0.

(Configuration for detecting the fixed position of the inner tank and the inner tank and the alignment of the openings) As shown in FIG. There is. An inner tank position sensor 103 made of a Hall element is arranged on the outer tank cover 16 above the rear bearing part 28 so as to correspond to the rotation locus of the magnet 102.
When 02 is detected, the position sensor 103
One rotational position detection signal is output. In this embodiment, the magnet 102 and the position sensor 103 are used to move the rear bearing part 28 of the inner tank 21 which also serves as an air outlet and the rear shaft part 31 of the inner tank 30 to the outer tank 15 at the end of the dewatering operation.
The inner tank 2 is aligned with the air outlet 101 of the inner tank 30, and the entrance/exit 36 of the inner tank 30 corresponds to the opening 3 of the main body cover 2.
The rotation of 1 is stopped.

The second magnet 106 as the second detected object is located closer to the rotation center of the inner tank 21 than the magnet 102 is.
It is provided at one end on the lid body 37 on the outer periphery of the inner tank 30 . Second magnets 106 to 120 are attached to the peripheral wall of the inner tank 30.
A first magnet 104 serving as a first detected object is provided at a distance.

The distance (mounting angle) from the second magnet 106 to the first magnet 104 is determined by the amount of load that is usually used in order to shorten the low speed rotation time of the inner tank 30 after inertia rotation as much as possible. (80%) of the laundry is stored in the inner tub 30 and when the inner tub 30 rotates forward, after the first magnet 104 passes the inner tub position sensor 105 as a detection body made of a Hall element, The tank driving motor 51 stops and the inner tank moves by inertia by 3 degrees, and the second magnet 106 moves to the inner tank position sensor 1.
The distance is set based on the distance reaching around 05.

(Configuration of control circuit) As shown in FIG. 5, a central processing unit (CPU) 111 constitutes a signal generating means for generating an inner tub rotation stop signal and a control means, and controls the entire operation of the dehydrating/drying washing machine. It has a built-in memory 107 and a timer 108 for storing programs for washing, washing, rinsing, spin-drying, drying operation time setting data, and the like. Rotational position detection signals are input to the CPU 11 from the inner tank position sensor 103 and the inner tank position sensor 105 via comparators 124 and 125.

On the other hand, the main winding 51a and the auxiliary winding 51b of the tank driving motor 51, the solenoid 112 for opening and closing the water supply valve of the water supply device 81, the opening and closing of the drain valve 85, and the clutch pawl 72
Solenoid 113 for engaging and disengaging the lid lock member 7
Solenoid 114 for engaging and disengaging the hot air supply device 94
A fan motor 96 and a heating heater 98 are connected in parallel to an AC power supply circuit 115 via triacs 116 to 122, respectively. Then, an activation signal is output from the CPU 111 to the gate terminal of each of the triacs 116 to 122 via a driver 123, a resistor, and the like.

(Outline of Operation) Next, an outline of the operation of the dehydrating/drying washing machine configured as described above will be described.

First, with the main body opening/closing lid 4 and the inner FfI lid 37 open, after putting the laundry into the inner tub 30, open the inner tub lid 37.
When the main body opening/closing lid 4 is closed and a start switch (not shown) is operated, a series of operations are automatically performed in sequence under the control of the CPU 11. That is, (a) Water supply operation by the water supply device 81 (b) Washing operation based on the rotation of the inner tank 30 (c) Drain valve 8
(d) Dehydration operation based on the rotation of the inner tank 21 (e) Water supply operation by the water supply device 81 (f) Water supply by the water supply device 81 and rinsing operation based on the rotation of the inner tank 30 (g) Drainage Drainage operation by opening the valve 85 (h) Inner tank 21
(i) A drying operation based on the rotation of the inner tank 30 and the supply of warm air by the hot air supply device 94.

(Details of Operation) Next, each of the above-mentioned operations (a) to (i) will be explained in detail.

Now, as mentioned above, when washing is carried out with both the main body opening/closing lid 4 and the lid body 37 closed and the laundry stored in the inner tub 30 in advance, when a switch (not shown) is operated, the water is automatically drained. Valve 85 is closed and spring clutch 7
1 is in the cutoff state, and the brake body 75 is in the braking state to restrict the rotation of the inner tank 21. In this state,
The water supply valve of the water supply device 81 is opened, and water is supplied into the outer tank 15 from the water supply port 82. When the water level in the outer tank 15 reaches the inside of the inner tank 30 and becomes a washing water level (not shown) below the normal water level Wn, the water supply is stopped and the tank driving motor 51 is rotated, the inner tub 30 is rotated about the horizontal axis X--X, and the washing operation is started.

During this washing operation, the spherical inner tub 3 containing the laundry
0 rotates around the horizontal axis X-X (about 40 rpm)
As it rotates, a plurality of reversing protrusions 34, 41
So-called pound washing is performed while the laundry is being transferred.

(Operation of Stopping the Inner Tank in a Fixed Position) Next, the operation of stopping the inner tank in a fixed position in this embodiment will be explained with reference to the flowchart shown in FIG.

At the end of the washing operation, during the washing operation in step 1,
In step 2, it is determined whether or not an inner tank rotation stop signal has been output from the CPU 11. If an inner tank rotation stop signal has been output, in step 3, the motor 51 is immediately energized or cut off for a predetermined period of time ( In the embodiment, the tank driving motor 51 completely stops within about 1 second). Inner tank 30 is stopped.

Next, in step 4, the tank driving motor 51 is energized, the inner tank 30 is rotated forward (clockwise in the embodiment), and the first magnet 104, which will be described in detail later, is rotated. A determination operation of the second magnet 106, that is, a determination of the rotation direction is performed. When the first magnet 104 is detected in step 5, a motor stop signal is immediately output from the CPU 11 in step 6.

Next, in step 7, the CPU 11 determines whether a predetermined period of time (approximately 1 second in the embodiment) has elapsed since the power supply to the tank driving motor 51 was cut off. In step 10, it is determined whether or not the flag of the second magnet 106 is set, and if the flag is set, that is, if the entrance/exit 36 does not pass through the opening 3, then in step 11, the tank is driven. The motor 51 is rotated at a low speed in the forward rotation direction, and the inner tank 30 is rotated at a low speed. In this low-speed rotation state, the inner tank position sensor 105 detects the second magnet 106 in step 12, and when a detection signal is input,
That is, when the entrance/exit 36 matches the opening 3, in step 13, the CPU 11 sends an OFF signal to the tank driving motor 51.
The F signal is output and the motor is stopped. Therefore, the inner tank 30 is also stopped.

After a predetermined time (approximately 1 second) after this motor stops, in step 14, it is determined whether or not the second magnet 106 is being detected, that is, whether the inner tank 30 is being stopped, and the detection If a medium signal is input, it is determined that the inner tank 30 is stopped at a predetermined position, and the process proceeds to step 14 to proceed to the next step.

The coasting speed is too high and about 1 in step 7
If the second magnet 106 is detected before the second elapses, a flag is set in step 9 through step 8, and the process proceeds to step 10 after about 1 second has elapsed. Since the flag is set in step 10, the process proceeds from step 10 to step 15, and in step 15, it is determined whether or not the second magnet 106 is being detected, that is, whether or not the inner tank 30 is stopped at a fixed position. , if the detection is in progress, the process moves to step 13 described above. On the other hand, if it is not being detected,
That is, when the inner tank 30 has passed the normal position, in step 16, the tank drive motor 51 is rotated at a low speed in the opposite direction to that described above.

Thereafter, it is determined in step 17 whether or not the position sensor 105 has detected the second magnet 106, that is, whether or not the inner tank 30 has returned to its normal position. If detected, the process similarly moves to step 13. be done.

In this way, the inner tank 30 can be stopped at a fixed position.

Next, the operation of determining the first magnet 104 and the second magnet 106 in step 4 will be explained based on FIGS. 6 and 7. During the rotation of the inner tank 30, both magnets 104
, 106, the output from the comparator 124 is the seventh
As shown in the figure, since the elapsed time Ta from the detection of the first magnet 104 to the detection of the second magnet 106 is different from the elapsed time Tb from the detection of the second magnet 106 to the detection of the first magnet 104, This is done by comparing both times Ta and Tb. This operation will be explained based on the flowchart of FIG. 6. In step 1, the tank driving motor 51 is rotated forward at a normal speed, and in step 2, the position sensor 105 detects whether the first magnet 104 or the second magnet 106 is rotated. 10
5, and if it has passed, the timer 108 starts counting in step 3, and further, in step 4, it is determined whether the second magnet 106 or the first magnet 104 has passed the sensor 105. If it passes, in step 5 the time Tx measured by the timer 108 is determined.
or the half of the sum of both times Ta and Tb (T/2
), and if it is shorter, it is determined that the next magnet is the first magnet 104, and if it is longer, it is determined that the next magnet is the second magnet 106, This allows discrimination between the two magnets 104 and 106.

(Modification) Note that the present invention is not limited to the configuration of the embodiment described above, and for example, the inner tank 30 is supported within the inner tank 21 so as to be rotatable around the horizontal axis X-X. It is also possible to make various changes and embodiments without departing from the spirit of the invention, such as supporting the tank 30 rotatably around an inclined axis that is inclined at a predetermined angle with respect to the horizontal axis X-X. .

[Effects of the Invention] As is clear from the detailed description above, the present invention has the effect of being able to accurately and reliably stop the inner tank at a predetermined position with a simple configuration.

[Brief explanation of drawings]

1 to 7 show embodiments embodying the present invention, and FIGS. 1(a) to (C) show inner tub fixed position stop operations of a dehydrating/drying washing machine embodying the present invention. 2 is a flowchart to explain the operation of stopping the inner tank in a fixed position. FIG. 3 is a side sectional view showing the entire spin-drying washing machine. 5 is a block circuit diagram of the control device; FIG. 6 is a flowchart for explaining the discrimination operation of two magnets; and FIG. It is an explanatory diagram for explanation. In the figure, 1 is the case body, 15 is the outer tank, 30 is the inner tank, 35
is a small hole, 51 is a tank driving motor, 104 is a first magnet as a first detected object, 105 is an inner tank position sensor as a detected object, and 106 is a second detected object. A magnet, 111 is a CPU that serves both as a signal generation means and a control means.
It is. Figure 1 (2) Figure 1 (C) Figure 1 (Shi) @Figure 7

Claims (1)

[Claims] 1. A case body (1) of a washing machine, an outer tank (15) provided in the case body for storing water, and a horizontal axis or a container inclined at a predetermined angle with respect to the horizontal within the outer tank (15). an inner tub (30) that is rotatably supported around the horizontal axis, has a large number of small holes (35) in the peripheral wall, and is capable of accommodating laundry; Or a tank drive motor (51) that rotates around the tilt axis.
), a first detected object (104) placed on the outer periphery of the inner tank (30), and a second detected object (104) placed on the outer periphery at a predetermined angle away from the first detected object (104). Detected object (
106) and its first and second detected objects (104, 10
6) The case body (1) or the outer tank (
15), a signal generating means (111) that generates an inner tank rotation stop signal, and a tank drive motor (51) that is energized based on the generation of the inner tank rotation stop signal. The inner tank (30) is stopped once by shutting off, and then the tank drive motor (51) is energized to rotate the inner tank (30) in one direction again, so that the detection object (105) When the object to be detected (104) is detected or immediately thereafter, the power supply to the tank driving motor (51) is cut off and the inner tank (
30) is rotated by inertia, and after a predetermined period of time, the tank drive motor (5
1) is energized again to rotate the tank drive motor (51) at low speed to rotate the inner tank (30) at low speed.
5) cuts off the current to the tank drive motor (51) when the second detected object (106) is detected, and the inner tank (30)
A washing machine characterized by comprising: a control means (111) for stopping the washing machine at a fixed position.