JP3493120B2 - Washing machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine provided with a clutch that connects and disconnects a rotary tub and an agitator.

[0002]

SUMMARY OF THE INVENTION The applicant of the present invention is
Japanese Patent Application No. 9-194148 has been applied for as a washing machine. FIG. 23 and FIG. 2 show the structure of the mechanical section of this washing machine.
4, the clutch portion of the washing machine has a characteristic structure. That is, the rotary tank 101 (only the bottom is shown in the drawing) has a hollow tank shaft 101.
a is connected, and the stirring shaft 102a connected to the stirring body 102 (only the boss portion thereof is shown in the drawing) is housed inside the tank shaft 101a. The rotor 1 of the motor 103 is provided at the lower end of the stirring shaft 102a.
03a are connected, and when the rotor 103a rotates, the stirring shaft 102a also integrally rotates the stirring body.

A clutch lever 105 of a clutch 104 is connected to the tank shaft 101a, and in the state shown in FIG.
The dehydration clutch mode is shown. In this state, when the clutch lever 105 is rotated in the direction opposite to the arrow R,
The lower convex portion 105a of the clutch lever 105 is the rotor 10
3a is engaged with the engaging convex portion 103b,
By this engagement, the tank shaft 101a and the rotor 103a are connected via the clutch lever 105. That is,
The rotary tank 101 and the stirring body 102 are in a connected state. Therefore, when the rotor 103a rotates in this state,
The rotational force of the rotor 103a is transmitted from the clutch lever 105 to the rotary tank 101 through the tank shaft 101a, and the rotary tank 101 and the stirring body 102 rotate integrally. The dehydration operation is performed by this rotation.

On the other hand, a control lever 106 is provided on the side of the clutch lever 105, and when the control lever 106 enters the rotation locus of the clutch lever 105, the clutch lever 105 contacts the control lever 106 and the arrow R
Rotate in the direction. Then, as shown in FIG. 24, the upper convex portion 105b of the clutch lever 105 engages with the inside of the clutch engaging hole portion 107a of the base 107, so that the rotor 10
3a and the clutch lever 105 are cut off, that is, the connection between the stirring body 102 and the rotary tank 101 is released and the rotary tank 101 is fixed. As a result, the washing clutch is used. In this state, the rotor 10 of the motor 103
When 3a rotates, the stirring body 102 rotates independently. By this rotation, the washing operation and the rinsing operation are performed.

The lower convex portion 1 of the clutch lever 105
05a and the engaging convex portion 103b of the rotor 103a constitute the first engaging means 108, and the upper convex portion 105b of the clutch lever 105 and the clutch engaging hole portion 10 of the base 107.
The second engaging means 109 is constituted by 7a.

However, in the case of the above configuration, when the clutch lever 105 is switched from the dewatering clutch mode (state of FIG. 23) to the washing clutch mode, if the clutch lever 105 engages with a place other than the clutch engaging hole 107a. The switching operation of the clutch lever 105 will not be performed normally. In order to eliminate this, the clutch switching operation determination means 110 for determining whether or not this clutch switching operation (disconnection of the rotation tank 101 and the stirring body 102 from the connection state of the rotation tank 101 and the stirring body 102) is performed. It is provided (see FIG. 25). This is the base 107
Reed switch 110a provided on the clutch lever 1
And a magnet 110b provided on the reference numeral 05.

In this structure, when the dehydration clutch mode of FIGS. 23 and 25 is switched to the washing clutch mode, the control lever 106 is moved to the clutch lever 105.
The upper convex portion 105b of the clutch lever 105 is engaged with the clutch engagement hole portion 107a of the base 107 based on the rotation of the motor 103 by rotating the motor 103 into the rotation locus of the above. The predetermined electric signal from the reed switch 110a is not output, that is, the disconnection between the rotary tank 101 and the stirring body 102 is not determined. Therefore, the above-mentioned clutch switching operation can be redone until the reed switch 110a outputs a predetermined electric signal.

By the way, in the dehydration operation, the rotor 1
03a of the clutch lever 105 is engaged with the lower convex portion 105a of the clutch lever 105, and the rotational force of the rotor 103a strongly acts on the lower convex portion 105a. The resultant force is acting. In such a dehydration operation, when the laundry is stuck to the rotary tub 101 and the agitator 102, or when a large amount of laundry is stored in the rotary tub 101, It is conceivable that the connection between the rotary tub 101 and the agitator 102 is maintained by this laundry, and that the above-mentioned strong engagement state continues without being loosened.

In such a situation, even if the rotor 103a is rotated and the clutch lever 105 is brought into contact with the control lever 106 in order to switch the clutch 104 to the dehydration clutch mode, the clutch lever 10 is not disengaged and the clutch lever 10 is not released.
5 does not easily move in the direction of arrow A (the switching operation is not performed). Therefore, in such a situation, even if the switching operation of the clutch 104 (rotation of the motor 103) is simply repeated, the engagement may not be easily disengaged and the clutch 104 may not be switched.

Further, in this type of washing machine, the clutch 104 is in the form of a washing clutch during the washing operation and the rinsing operation as shown in FIG. 24, but vibration is generated in this state. In such a case, the engagement by the second engagement means 109 described above (the upper convex portion 105b of the clutch lever 105 and the clutch engagement hole portion 107 of the base 107) is performed.
The engagement with a) becomes easy to disengage. If the washing operation and the rinsing operation are continued in such a situation, the above engagement may be completely disengaged and the clutch may be in an incomplete state, so that the washing operation and the rinsing operation may not be performed.

The present invention has been made in view of the above circumstances, and a first object thereof is to make it possible to reliably perform a clutch switching operation from a connected state of a rotary tank and an agitator to a disengaged state, The second purpose is to enable the washing operation and the rinsing operation to be favorably performed so that even if the clutch state becomes uncertain in the washing operation and the rinsing operation, it can be returned to the complete clutch state. It is a thing.

[0012]

In order to achieve the first object, the invention of claim 1 is rotatably provided in a water receiving tank.
Rotary tank and agitator provided at the bottom of the rotary tank
And a stirring shaft that connects this stirring body and a stirring shaft that connects this stirring shaft.
Provided in the part that rotates integrally with the agitated motor and the stirring shaft
First engaged part and the tank shaft connecting the rotary tank
And a mechanism housing attached to the outer bottom of the water receiving tank
Moves up and down on the second engaged part on the tank and the tank shaft
Possible and integrally mounted in rotation, said first position in the down position
Has a first engaging portion that engages with the engaged portion of
Has a second engaging portion that engages with the second engaged portion at a position.
The engagement of the first engaging portion with the first engaged portion.
The first clutch that connects the motor to the stirring shaft and the tank shaft.
Latch mode and second engagement with the second engaged portion
The rotation tank is fixed to the mechanism housing by the engagement of the parts.
A second clutch mode in which the motor is connected only to the stirring shaft
And a clutch that switches between and
A control member for moving the clutch to a lower position,
Switching from the first clutch mode to the second clutch mode
When changing, rotate the motor at a low speed to disengage the clutch.
The second member is moved to the upper position by the control member.
To the first clutch mode from the second clutch mode.
When switching to the latch mode, the control member is operated.
By moving this clutch to the lower position,
The clutch mode is switched to
Clutch switching determination means for determining whether or not it is the second clutch mode, water supply means for supplying water into the rotary tank, and rotation of the motor when switching from the first clutch mode to the second clutch mode. After that, when the clutch switching determination means does not determine that it is in the second clutch mode, retry control execution means for executing retry control for supplying water into the rotary tank by the water supply means and rotating the motor. And are equipped with.

With this configuration, when the clutch switching determination means does not determine that the clutch is in the second clutch mode after rotating the motor when switching from the first clutch mode to the second clutch mode, the rotary tank Since the retry control for supplying water to the inside by the water supply means and rotating the motor is performed, the first clutch mode is changed to the second clutch mode.
Thus, the clutch switching operation to the clutch mode can be surely performed. That is, in the first clutch mode, the rotary tank and the agitator are connected, and when the motor is rotated to release the connection between the rotary tank and the agitator from this state, the first engagement is normally performed. The means is disengaged to release the connection between the rotary tub and the agitator, but if the connection between the rotary tub and the agitator remains strong due to the laundry during the dehydration operation, the first The engagement of the engaging means remains strong, and even if the motor is rotated to release the connection between the rotary tank and the stirring body, the engagement between the first engaging portion and the first engaged portion is maintained. It may not come off. In this case, in the above configuration, the clutch switching determination means remains in a state where it does not determine that the clutch has been switched to the second clutch mode. Based on this, by performing water supply by the water supply means,
The laundry in the rotary tub should be separated from the inner surface of the rotary tub and the upper surface of the agitator.
It can be expected to float between the rotating tank and the agitator, and the first engaging part and the first cover are loosened.
When the engagement with the engagement portion is loosened and the motor is subsequently rotated, the engagement between the first engagement portion and the first engaged portion is released, and the connection between the rotary tank and the agitator is completed. It will be canceled. That is, the clutch can be reliably switched to the second clutch mode.

According to a second aspect of the present invention, there is provided notifying means, and after the retry control is executed by the retry control executing means,
When the clutch switching determination means does not determine that it is in the second clutch mode, the notification means is caused to perform the notification operation and the washing operation is stopped.
In this configuration, when the clutch switching determination unit does not determine that the clutch is in the second clutch mode after the retry control is performed by the retry control execution unit, that is, when the clutch switching operation is not reliable, the notification unit is provided. Since the notification operation is performed and the washing operation is stopped, the abnormality can be notified and the washing operation in the abnormal state can be prevented.

According to a third aspect of the present invention, there is provided a driving course in which the laundry amount is detected in the rotating tub and the water amount is not accommodated, and the water level is set according to the detection result, and the retry control is executed. When the laundry amount detecting means is executed after that, the water level is set to a high water level regardless of the laundry amount detection result.
In this configuration, the laundry amount detecting means detects the amount of laundry in a state in which the laundry is contained in the rotary tub and the water is not contained. In this case, if water is supplied by executing the retry control, a large amount of water will be included in the laundry, which may result in an inaccurate detection result of the laundry amount and a water level lower than the required water level may be set. . In this case, there is a risk of insufficient washing due to insufficient water. However, in the above configuration, when the laundry amount detecting means is executed after the retry control is executed, the water level is set to a high water level regardless of the result of the laundry amount detection. There is no end.

The invention of claim 4 comprises, as water supply means, a tap water supply means for supplying water from a water supply and a pump water supply means for supplying water from a water source different from that of the water supply, and an operating course. As a characteristic, a pump water supply course using a pump water supply means is provided, and when the pump water supply course is executed, the water supply operation in the retry control is characterized in that the tap water supply means is used. When water from another source such as bath water is available, the pump water supply course is often executed. At this time, if the water supply operation in the retry control is performed using the pump water supply means, it takes time to complete the water supply operation,
It takes time to complete the retry control. However, in the above-described configuration, since the tap water supply means is used for the water supply operation in the retry control, the time until the end of the water supply operation is shortened, and it does not take time to complete the retry control execution.

According to a fifth aspect of the present invention, in the washing process or the rinsing process, control is performed so that the rotation of the stirring body is started when the water level supplied to the rotary tank reaches a specified water level lower than the set water level. The water supply level at the time of execution of retry control is characterized by being set to the specified water level. In the washing process or rinsing process, when the water level supplied to the rotary tank reaches the specified water level lower than the set water level, the function that controls the rotation of the stirring body to start when the stirring body starts is specified. The water level is set to a level that does not cause damage to the cloth.In other words, when the water level does not cause damage to the cloth, the agitator starts rotating to accelerate the cleaning action in the washing and rinsing steps. I am trying to get it. Therefore, by setting the feed water level during the retry control to the specified water level, the retry control can be executed with a sufficiently high water level that does not cause damage to the cloth even if the water level of the stirring body does not rotate, The switching operation becomes more reliable.

[0018] To achieve the second object, the invention of claim 6 includes a rotating tub rotatably provided in the water-receiving tub, this
The stirrer provided at the bottom of the rotating tank and the stirrer
A stirring shaft connected, and a motor connected to this stirring shaft,
A first engaged member provided in a portion that integrally rotates with the stirring shaft
A joint, a tank shaft connecting the rotary tank, and an outer bottom of the water receiving tank
Second provided on the mechanism housing attached to the section
It is possible to move up and down with the engaged part of and the tank shaft and rotate integrally
Attached to the first engaged portion in the lower position
Has a first engaging portion that is
The first engaged member has a second engaging portion that engages with the engaging portion.
The engagement of the first engaging portion with the joint portion causes agitation with the motor.
A first clutch mode for connecting a stirring shaft and a tank shaft;
Due to the engagement of the second engaging portion with the second engaged portion,
The rotating tank is fixed to the mechanism housing and the motor is a stirring shaft.
A clutch that switches between a second clutch mode that is connected to the only clutch
Switch and this clutch are moved to the upper and lower positions.
A control member, wherein the clutch is the first clutch
When switching from the mode to the second clutch mode,
Rotate the motor at a low speed to operate the clutch by the control member.
Move to the upper position and switch to the second clutch mode
From the second clutch mode to the first clutch mode
When changing, change the control member by operating it.
The first clutch mode by moving the clutch of
It is adapted to be switched, and the second clutch
Clutch switching determination means for determining whether or not
And a water supply means for supplying water to the rotary tank, and a washing step
In the rinsing stroke, the clutch switching determination means is
If it is not judged that the clutch mode is No. 2,
The rotation of the motor is stopped, and the water supply means is installed in the rotary tank.
Retry control to supply water and rotate the motor
And retry control execution means you, the retry control execution hands
After executing the retry control by the step, the clutch switching control means controls to restart the rotation of the motor when the clutch switching determination means determines that it is in the second clutch mode.

During the washing stroke and the rinsing stroke, the second clutch state is established. In this state, however, when vibration occurs, the above-mentioned second engaging portion and second cover are engaged.
The engagement with the engagement portion is easily disengaged (the clutch state becomes incomplete). If the rotation of the motor is continued in such a situation, vibration may continue to be generated and the above engagement may be completely disengaged, and the washing process and the rinsing process may not be performed. However, in the above configuration, when the clutch switching determination means does not determine that the clutch is in the second clutch mode, the rotation of the motor is stopped and the retry control is performed.
Control, so it is expected that the clutch state will be restored.
it can. Then, the clutch switching determination means is the second clutch.
The motor rotation is restarted from the moment when it is determined that
Open.

[0020]

According to the invention of claim 7 , there is provided a cloth quality detecting means for detecting the cloth quality of the laundry in the rotary tub based on the rotation of the agitator, and the clutch monitoring control is carried out during execution of the cloth quality detecting means. When the means is executed, the feature is that the cloth quality is uniquely set to "standard" regardless of the detection result of the cloth quality detection means. If the clutch monitoring control means is executed during the execution of the cloth quality detecting means, the rotation of the agitator is stopped, so that the cloth quality detecting operation by the cloth quality detecting means becomes inaccurate. At this time, in the above configuration, the cloth quality is uniquely set to “standard” regardless of the detection result of the cloth quality detection means, and thus the cloth quality false detection range can be reduced.
That is, as the cloth quality, for example, there are three stages of "rigid", "standard", and "supple", but when the actual cloth quality is "rigid", it is erroneously detected as "supple". Or conversely, if the actual cloth quality is "supple" and it is falsely detected as "wrinkly",
The erroneous detection level of the cloth quality becomes two levels, but by making the cloth quality uniquely "standard", the erroneous detection level of the cloth quality will be at most one level , and the cloth quality erroneous detection range can be reduced. become.

According to the eighth aspect of the present invention, the clutch monitoring control means stops the rotation of the motor regardless of the determination result of the clutch switching determination means only while the rotation of the motor is being lowered, or during the brake control or during the rest period of the motor. It has a feature that it is not done. The fact that the vibration is not great means that the rotation of the motor is being lowered, or that the brake control is being performed or the motor is in a rest period. Therefore, at this time, the clutch switching determination means is in the second clutch mode. When there is a case where the judgment is not made (when the engagement between the second engaging portion and the second engaged portion is easily released), the above engagement can be achieved without stopping the rotation of the motor. It can be expected to return (return to the second clutch mode state), and wasteful control can be eliminated.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described below with reference to FIGS. Figure 4
1 shows the configuration of the entire washing machine, and the outer tub 2 is elastically supported in the outer box 1 via a plurality of sets (only one set is shown) of elastic suspension mechanisms 3. Inside the outer tub 2, a rotary tub 4 that also serves as a washing tub and a dehydrating tub is provided, and further, an agitator 5 is provided inside the rotary tub 4.

The rotary tank 4 has a tapered cylindrical tank body 4a which gradually expands upward, an inner cylinder 4b provided inside the tank body 4a so as to form a space for pumping water, and a tank body 4a. It has a balance ring 4c attached to the upper end. When the rotating tank 4 is rotated, the water inside is pumped up by the rotating centrifugal force and discharged to the outer tank 2 from the dehydration hole portion (not shown) in the upper part of the tank body 4a.

A tank shaft through hole 6 is formed at the bottom of the outer tank 2 and a drainage port 7 is formed. A drainage channel 9 having a drainage valve 8 is connected to the drainage port 7. ing. The drain valve 8 is opened and closed by a geared motor 55 described later. In addition, an auxiliary drainage port 7a is provided at the bottom of the outer tank 2.
The auxiliary drainage port 7a bypasses the drainage valve 8 via a connection hose (not shown) and is connected to the drainage channel 9
The water discharged from the upper part into the outer tub 2 by the rotation of the rotary tub 4 is discharged.

As shown in FIG. 6, a mechanism housing 10 is attached to the outer bottom of the outer tank 2. The mechanism housing 10 includes an upper frame portion 10 a and a lower frame portion 1.
0b, the upper frame portion 10a has an upward cylindrical portion 11 formed in the central portion thereof, and the lower frame portion 10b has a downward cylindrical portion 12 formed in the central portion thereof. Then, bearings 13 and 14 made of, for example, ball bearings are provided in the cylindrical portions 11 and 12, respectively, and a hollow tank shaft 15 is inserted into and supported by the bearings 13 and 14. In addition, a seal 16 is fitted on the cylindrical portion 11 above the bearing 13.

A flange portion 17a is provided on the tank shaft 15 above.
The support cylinder 17 having the is attached so as to rotate integrally with the tank shaft 15. Further, inside the tank shaft 15, the stirring shaft 18
Is rotatably inserted and supported via bearings 18a, 18a made of, for example, metal, and an upper end portion thereof is projected from the support cylinder 17 and a lower end portion thereof is projected from a lower end portion of the tank shaft 15. Then, the rotary tank 4 is attached to the flange portion 17a of the support cylinder 17 so as to rotate integrally, and
The stirring body 5 is attached to the upper end of the stirring shaft 18 so as to rotate integrally.

A drain cover 19 is attached to the inner bottom of the outer tank 2 as shown in FIG.
A drain passage 20 is formed from the bottom of the rotary tank 4 to the drain valve 8 in the drain port 7. Therefore, by supplying water into the rotary tub 4 with the drain valve 8 closed, water is collected from the drain passage 20 into the rotary tub 4, and when the drain valve 8 is opened, the water in the rotary tub 4 is drained. Water can be drained through the passage 20.

An upper cover 1a is mounted on the upper part of the outer box 1, and inside the rear portion of the upper cover 1a, as shown in FIG.
A water dispenser 23 is provided. The water supply valve 21 is connected to a faucet (not shown) via a hose (not shown). When the water supply valve 21 is opened, tap water is supplied to the water dispenser 23.
It is adapted to be supplied into the rotary tank 4 via the. In this case, a part of the tap water is supplied from the water supply device 23 via the connection pipe 23a into the pump 22 as so-called priming water and is stored in the pump 22. The water supply valve 22 and the water supply device 23 constitute tap water supply means 24.

The suction port 22a of the pump 22 is inserted and arranged in a bath which is another water source through a hose (not shown). This pump 22 is equipped with a pump motor 25 (see FIG. 19) inside, and when it is driven, it sucks the water (bath water) in the bathtub and connects the water supply device 23 to the rotary tank 4 from the connection pipe 22b. To be supplied to. This pump 22 and water supply 23
A pump water supply means 26 is configured.

The mechanism frame 1 at the outer bottom of the outer tank 2
In the 0 part, a motor 27 configured as a brushless motor type
Is provided. That is, as shown in FIG. 6, the stator 28 is concentric with the stirring shaft 18 in the mechanism frame 10.
Are attached by screws 29. This stator 28
Is the laminated iron core 30 and the bobbin 31a on the teeth portion thereof.
And a winding 31 wound via the.

On the other hand, the rotor 32, which constitutes the motor 27 together with the stator 28, is attached to the lower end of the stirring shaft 18 so as to rotate integrally therewith. This rotor 32
Includes a rotor housing 33, a rotor yoke 34, and a rotor magnet 35. The rotor housing 33 has a boss portion 33a at the center thereof, and the magnet arrangement portion 3 having an L-shaped cross section at the outer peripheral end portion.
3b. The rotor yoke 34 and the rotor magnet 35 having one pole are attached to the inner surface of the magnet placement portion 33b.

A clutch 36 is provided below the mechanism housing 10. In the clutch 36, the holder 37 is attached to the outer periphery of the lower end portion of the tank shaft 15 so as to rotate integrally therewith. Specifically, as shown in FIGS. 8 to 10, four flat surfaces 15a are formed on the outer surface of the tank shaft 15. On the other hand, the holder 37 is made of, for example, a rectangular parallelepiped metal block, and has a fitting hole 37a for fitting with the flat surface 15a portion of the tank shaft 15 formed at a substantially central portion thereof.

An insertion hole 3 into which a shaft 41, which will be described later, is inserted is provided on the other side portion (right side portion in the drawing) of the holder 37.
8 forming. Then, with that configuration, the holder 37
After fitting the fitting hole 37a into the four flat surfaces 15a of the tank shaft 15 and fixing the fitting hole 37a with the screw 37b (see FIG. 6) to prevent the tank shaft 15 from rotating integrally with the tank shaft 15. Is installed.

The switching member 39 is formed in a rectangular frame shape, and is fitted to the outer periphery of the holder 37 so as to rotate integrally with the rotation direction of the tank shaft 15. Insertion holes 40 corresponding to the insertion holes 38 of the holder 37 are formed on both sides of the base end portion 39a of the switching member 39, and a round rod-shaped shaft 41 is inserted into the holder 37 from one of the insertion holes 40. The shaft 41 is rotatably inserted into the other insertion hole 40 and fixedly fitted in the other insertion hole 40, thereby passing the shaft 41 between the switching member 39 and the holder 37.
Thus, the switching member 39 is pivotally supported on the holder 37 so as to be rotatable in the axial direction (in this case, the vertical direction).

Further, the switching member 39 includes a holder 3
7 and a toggle spring 42, which is a coil spring,
It is provided so as to extend between a protrusion 39b (see FIG. 10) formed on the switching member 39 and a hole (not shown) formed on the holder 37, whereby the switching member 39 is rotated in one axial direction (upward). It is adapted to be held in the moving position and the other (downward) rotating position. Further, the tip end portion of the switching member 39 has a convex portion 4 as a second engaging portion and a convex portion 4 as a first engaging portion.
3a and 43b are integrally formed, and the operated portion 44 is provided on the tip surface portion.
Is also integrally formed. The operated portion 44 has an inclined surface 44a which is an upward guide receiving surface and an inclined surface 44b which is a downward guide receiving surface. The inclined surfaces 44a and 44b are formed into curved surfaces as shown in FIG. 5, and the surfaces 44a and 44b are coated with a fluororesin which is a low friction resin.

Further, the lower frame portion 10b of the mechanism portion frame 10 which is a stationary portion is provided with a second engaging portion so as to correspond to the convex portion 43a on the upper portion of the switching member 39 .
A hole 45 is formed, and the rotor housing 3
A plurality of convex portions 46, which are first engaged portions, are formed on the upper surface of 3 so as to correspond to the rotation locus of the lower convex portion 43b. The convex portion 43b of the switching member 39 and the convex portion 46 of the rotor housing 33 constitute the first engaging means 47, and the convex portion 43a of the switching member 39 and the hole 45 of the lower frame portion 10b form the second engaging portion. The combining means 48 is configured.

On the other hand, a magnet holder 49 is formed on the switching member 39 as shown in FIGS. 8 and 9, and a magnet 50 is attached to the magnet holder 49. On the other hand, when the lower frame portion 10b is surrounded by the cylindrical portion 12 as shown in FIG.
As shown in, a flat cover 51 is attached,
A reed switch 52 is attached to the back surface of the cover 51, and the reed switch 52 and the magnet 50 constitute a clutch switching determination means 53 (see FIG. 1).

However, during the washing operation, as shown in FIGS.
As shown in FIG. 7, the tank shaft 15 is fixed so as not to rotate by the engagement between the upper convex portion 43a and the hole 45 (engagement of the second engaging means 48), and the rotor 32 and the stirring shaft are fixed. Keep it in a state of being connected to 18 (which is originally in the relation of integral rotation). At this time, the magnet 50 is attached to the reed switch 52.
Turn on the reed switch 52 in close proximity, and this ON signal is given to the control circuit 64, which will be described later, as a signal indicating that the clutch switching has been switched to the wash clutch mode which is the second clutch mode. It is like this.

On the other hand, during the dehydration operation, as shown in FIGS. 7 and 1, the lower protrusions 43b and the protrusions 46 are engaged (first
By the engagement of the engaging means 47), the dehydration clutch mode state, which is the first clutch mode, is achieved, that is,
The tank shaft 15 and the rotor 32 are connected to each other, so that the rotor 32 is connected to both the stirring shaft 18 and the tank shaft 15. At this time, the magnet 50 is separated from the reed switch 52 to turn off the reed switch 52, and this off signal is a signal indicating that the clutch switching is not in the washing clutch mode, which will be described later.
To be given to.

In FIG. 3, the upper convex portion 43a has a hole 45.
3 shows a state in which the magnet 50 is slightly disengaged from the reed switch 52 (in this state, the magnet 50 is slightly separated from the reed switch 52). It is configured to turn off.

The control lever 54 shown in FIG.(Control member)
Is rotatable on the mechanism frame 10 by the intermediate support shaft 54a.
The control lever 54 shown in FIG.
Geared motor 55 as a driving source of water and a drain valve driving means
Direction of arrow A and the opposite direction of arrow B
It is designed to be rotated to. This control lever 54
Is, as shown in FIG.
A driven part 57 attached so that it can be rotated slightly
Which are integrally rotated by a spring 58.
It is designed to move. The driven unit 57 is an operating unit.
The inclined piece portion 57a is formed, and at the same time, the inclination as an operating portion is increased.
The oblique piece 59 is pivotally supported (is capable of falling). Na
The tilted piece 59 of this man is the arrow Sa direction from the state shown in FIG.
It does not rotate in the direction, but in the direction of arrow Sb.
So that it can rotate slightly against the spring force of the spring 59a.
Has become.

In the control lever 54, the arm portion 56a is connected to the connecting tool 60, and when the geared motor 55 is energized and driven, the motor 55 is driven by the wire 55a.
Is wound up and the connecting tool 60 is pulled in the direction of arrow K. The movement in the K direction causes the control lever 54 to rotate in the arrow A direction. After the rotation, when the motor 55 is de-energized, the lever spring 61 (see FIG. 12) causes the control lever 54 to return in the arrow B direction, and the connector 60 also returns in the counter arrow K direction. When the geared motor 55 is energized as described above and the connecting tool 60 is moved in the direction of arrow K, the drain valve 8 is opened (normally closed state). The control lever 54 is constantly urged in the direction of arrow B by the lever spring 61 described above.

Normally, the control lever 54 (when the geared motor 55 is in the disconnected state) is operated by the lever spring 61 as shown in FIG.
12 and 13, at the initial position, when the upper surface 59b of the inclined piece 59 and the inclined surface 44b of the switching member 39 come into contact with each other, the convex portion 4 of the switching member 39 is in contact.
3a has a positional relationship in which the hole 3 and the hole 45 substantially vertically face each other.

From the state shown in FIG. 13, the control lever 5
When 4 is rotated in the direction of arrow A, as will be described in detail later, as shown in FIG.
d'is the inclined surface 44a of the operated portion 44 of the switching member 39.
7 and FIG. 1 (the lower convex portion 43 of the switching member 39) by the spring force of the toggle spring 42 based on the sliding contact with the operated portion 44 and pressing the operated portion 44 downward.
b between the convex portions 46 of the rotor 32,
And the agitation shaft 18 and the tank shaft 15 are connected to each other during the dehydration operation.

Further, when the geared motor 55 is cut off from the states of FIGS. 7, 1 and 14 and the control lever 54 is rotated in the direction of arrow B by the lever spring 61 and returned to the initial position, the rotor described later will be described. By the low speed rotation of 32 (rotation in the direction of arrow C in FIGS. 9 and 13), the inclined surface 44b of the operated portion 44 of the switching member 39 slides on the upper surface 59a of the inclined piece 59, and the operated portion 44 moves. Based on the upward pressing, the spring force of the toggle spring 42 finally causes the state shown in FIGS. 6 and 2 (the upper convex portion 43a of the switching member 39 is engaged with the hole 45 of the mechanism portion frame 10). Let me
The tank shaft 15 is fixed, and the rotor 32 and the stirring shaft 18 are connected to each other to be in a washing operation state). The drain valve 8 is open when the control lever 54 is at the positions shown in FIGS. 7, 1 and 14 (during the dehydration operation).

Next, in FIG. 16 showing the electrical configuration, an inverter main circuit 63 as a motor drive circuit is connected to a DC power supply circuit 62 for converting the AC power supply Vac into a DC voltage, which is a switching element 63a. ~ 63f
Are connected by a three-phase bridge connection. The winding 31 of each phase of the motor 27 is connected to the inverter main circuit 63. The switching elements 63a to 63f of the inverter main circuit 63 are controlled by the control circuit 64 via the inverter control circuit 65, that is, the motor 27 is controlled by the control circuit 64. The control circuit 64 is mainly composed of a microcomputer, and has a switch input section 66 including various switches provided on an operation panel (not shown).
From the water level sensor 68 that detects the water level in the rotary tub 4 while receiving an input from the above, an opening detection signal from the lid switch 67 that detects the opening and closing of the washing machine lid 1b (see FIG. 4). A water level detection signal is given, and an on signal and an off signal from the reed switch 52 are further given.

The control circuit 64 has the geared motor 55 via the drive circuit 69, the water supply valve 21 for supplying water into the rotary tub 4 via the drive circuit 70, and the pump motor 25 via the drive circuit 71. The drive control is performed, and the buzzer 72, which is a notification unit, is also drive controlled. The control operation in the control circuit 64 is performed according to a control program stored in a storage means such as a ROM.
4, the washing, rinsing and dehydrating operations are executed. Further, the control circuit 64 functions as a retry control executing means, a clutch monitoring control means, a laundry amount detecting means, and a cloth quality detecting means. Further, the motor 27 is provided with a plurality of position detection elements 27a for detecting the position of the rotor 32, and the position detection signal of the position detection element 27a is also used for rotation speed detection.

The control circuit 64 controls the washing operation as shown in FIG. 17, for example, and the contents of each step are as follows. In FIG. 17, reference numerals T19a to T19c indicate timings for performing clutch switching / retry control in FIG. 19, reference numeral T20 indicates timings for performing clutch switching control in FIG. 20, and reference numeral T21.
Shows the timing of performing the clutch monitoring control of FIG. Further, the timing of energization and disconnection of the geared motor 55 is also shown in FIG.

A "Washing process" Weight detection operation ... This is a means for detecting the amount of laundry. This is because in the second clutch mode state (see FIG. 6), a constant electric power is applied to the motor 27 to rotate the stirring body 5 in a state in which laundry is stored in the rotary tub 4 and water is not stored, The amount of laundry is detected based on the degree of rotation speed (degree of rise or degree of inertial rotation fall after power failure). This detection data is used for water level setting. The control (clutch switching / retry control) shown in FIG. 19 is executed prior to the weight detection operation (this will be described later). First-time water supply operation ... This is for supplying a predetermined amount (constant amount of water) of water into the rotary tank 4 by controlling the water supply valve 21.

Cloth quality detecting operation ... This is a cloth quality detecting means. This is because in the second clutch mode state (see FIG. 6), a constant amount of water is stored in the rotary tank 4 to give a constant electric power to the motor 27 to intermittently rotate the agitator 5. The cloth quality of the laundry, for example, one of the three levels of "rough", "standard", and "supple" is detected based on the degree of variation in the rotation speed at each time. This detection data is used to set the strength of water flow. Second water supply operation ... This is to supply water until the water level set in the rotary tank 4 is reached. Washing operation: This causes the stirring body 5 to intermittently rotate forward and backward. At this time, the clutch monitoring control shown in FIG. 21 is executed (this will be described later).

B "Rinse Step" First Draining Operation ... This is to energize the geared motor 55 to open the drain valve 8 and drain the water in the rotary tank 4.
At this time, the clutch 36 changes to the state shown in FIG. First dewatering operation ... This spins the rotary tub 4 to dewater (remove the detergent component of the laundry). When this is completed, the geared motor 55 is cut off and the drain valve 8 is closed. At this time, the clutch switching / retry control shown in FIG. 19 is executed (this will be described later). First water supply operation ... This is to supply water until the water level set in the rotary tank 4 is reached. First rinsing operation ... This causes the stirring body 5 to intermittently rotate forward and backward. At this time, the rotation of the agitator 5 is started when the specified water level is lower than the set water level (this specified water level is indicated by reference symbol Lk in FIG. 4).
In addition, the code | symbol LH has shown the high water level of the water levels set with this washing machine, and the code | symbol LL has shown the minimum water level. After this, the second drainage operation, the second dehydration operation,
The second water supply operation and the second rinsing operation are the same as those described above.

C "Dehydration process" Drainage operation ... This controls the geared motor 55 to discharge the water in the rotary tank 4. Dehydration operation ... This rotates the rotary tub 4 to dehydrate (remove the detergent content of the laundry). When this is completed, the clutch switching control shown in FIG. 20 is executed (this will be described later).

The operation course of FIG. 17 is a tap water use course in which tap water is supplied by the tap water supply means 24.
Aside from this, a bath water use course for supplying bath water by the pump water supply means 26 is also provided, and this bath water use course is selected when a bath water setting switch (not shown) is operated.

In the washing process and the rinsing process, the rotor 32 is rotated in the forward and reverse directions. In this case, as shown in FIG. 18, the motor 2 is operated in the normal rotation mode for about 1.0 second, for example.
7 is driven and controlled, the motor 27 is driven and controlled so that the electromagnetic brake is applied in the next approximately 0.5 seconds, and the positioning energization mode (rotation pause mode) is set in the next approximately 0.5 seconds. 27 is controlled and the same control is performed in the reverse rotation direction.

Now, the clutch switching / retry control shown in FIG. 19 will be described. This is performed when switching from the dehydration clutch mode of FIG. 7 to the washing clutch mode of FIG. At the time when this control is executed, the geared motor 55 is cut off, and the control lever 54 is in the state shown in FIG. 13, that is, the inclined piece 59 has entered the rotation locus of the operated portion 44. is there. In step S1, it is determined whether the ON signal is given from the reed switch 52. That is, it is determined whether or not the clutch 36 is in the wash clutch mode shown in FIGS. 6 and 2. If "NO" in this step S1, step S
2, the motor 27 is rotated at a low speed in the arrow C direction.

Then, in a normal case, within one rotation of the motor 27, the inclined surface 44b of the operated portion 44 encounters the above-mentioned inclined piece 59 as shown in FIGS. The portion 44 is pushed upward, and the spring force of the toggle spring 42 acts on the portion 44 to rotate upward, so that the lower convex portion 43b is disengaged from the protrusion 46 (the first engaging means 47). Disengagement) and finally in FIG.
And the state shown in FIG. 6 (the convex portion 43a on the upper part of the switching member 39).
Engage with the hole 45 of the mechanism frame 10,
Is fixed, and the rotor 32 and the stirring shaft 18 are connected to each other to be in a washing operation state). In this case, the reed switch 52 is turned on, and the control circuit 64 is given an on signal. At this time, this control is ended according to “YES” in step S2.

However, when the rotary tank 4 and the agitator 5 continue to be firmly connected, the first engaging means 47 may not be disengaged. At this time,
The clutch 36 rotates in the state shown in FIGS. 1 and 7. That is, when the operated portion 44 rotates as it is, the driven portion 57 of the control lever 54 is forcibly pushed in the direction of the arrow A against the spring force of the lever spring 61 to rotate,
The operated portion 44 passes through the inclined piece 59, and the motor 27 rotates one rotation or more. The control lever 54
When the operated portion 44 passes, the spring force of the lever spring 61 returns in the direction of arrow B.

If the motor 27 makes two revolutions without the ON signal being input from the reed switch 52, the process proceeds to steps S5, S6 and S7 according to "YES" in step S4. The steps S5, S6 and S7 constitute a retry control execution means. Then, in step S5, the motor 2
Stop 7 and supply water to the set water level. By this water supply, the laundry in the rotary tub 4 can be washed by the inner surface of the rotary tub 4 and the stirring body
It can be expected to be separated from the upper surface or to slightly float. As a result, the state of connection between the rotary tank 4 and the stirring body 5 becomes loose, and the engagement of the first engaging means 47 becomes loose.

Thereafter, in step S6, the motor 2
Rotate 7 at low speed. Then, the inclined surface 44b of the operated portion 44 encounters the inclined piece 59, and the operated portion 44 is pressed upward. In this case, as described above, since the engagement of the first engaging means 47 is loose, the engagement is released, the switching member 39 is rotated upward, and the convex portion 43a is formed in the hole 4.
5, the clutch 36 is switched to the washing clutch mode. Along with this, the reed switch 52
Turns on. Then, in step S7, it is determined that the ON signal is input (washing clutch mode), and this control ends. If the motor 27 makes two revolutions without turning on the reed switch 52 (determined in step S8), the process moves to step S9 to drive the buzzer 72 to output an abnormality notification sound. Then, in step S10, the washing operation is stopped.

The clutch switching / retry control shown in FIG. 19 is performed at timings T19a, T19B, T1 shown in FIG.
9c. In particular, timings T19b and T19
When executed in c, the set water level in step S5 is set to the specified water level Lk at which the rotation of the stirring body 5 is started. In the case of the timing T19a, the cloth quality detecting operation is executed at the cloth quality detecting water level after that, so that the water level set in step S5 is set as the cloth quality detecting water level.

The feed water level during execution of retry control is
By setting the water level to the specified water level, the clutch switching operation becomes more reliable. That is,
In the washing process or the rinsing process, the water level supplied to the rotary tank 4 is lower than the set water level Lk.
When the stirring body 5 is controlled to start rotating when it reaches the specified level, the specified water level Lk is set to a sufficient water level so as not to cause the cloth damage, that is, the cloth damage. When the water level does not occur, the stirring body 5 is started to rotate so that the cleaning action in the washing process and the rinsing process can be obtained earlier. Therefore, by setting the water supply level during the retry control to the specified water level Lk, the retry control can be executed with a sufficiently high water level such that the agitator 5 does not rotate and the cloth is not damaged. The clutch switching operation becomes more reliable.

The control shown in FIG. 20 will be described. Immediately before this control is started, the final dehydration operation ends,
Then, the geared motor 55 is cut off, and the inclined piece 59 of the control lever 54 enters the rotation locus of the operated portion 44 as shown in FIG. Steps G1 to G4 shown in FIG. 20 are the same as steps S1 to S4 in FIG. 19, and retry control is not performed. That is, if the water supply in the retry control is executed at the time when the final dehydration is completed, the laundry that has been dehydrated with a great deal of concern may be wet with water. Then, in this case, it is conceivable that the clutch 36 is still not switched to the wash clutch mode. Since it is inconvenient to start the next washing operation as it is, the control of FIG. 19 including the retry control is executed at the timing T19a.

Now, the control circuit 64 determines the timing T19.
When step S5 is executed in the clutch switching / retry control of FIG. 19a, when the weight detecting operation as the laundry amount detecting means is executed thereafter, the water level is set to the high water level LH regardless of the laundry amount detecting result. I am trying to set it. This has the following effects.

That is, when water is supplied by executing the retry control, a large amount of water is contained in the laundry, and the result of detection of the laundry amount becomes inaccurate, which may set a water level lower than the required water level. There is also. In this case, there is a risk of insufficient washing due to insufficient water. However, in the present embodiment, when the laundry amount detecting means is executed after the retry control is executed, the water level is set to the high water level LH regardless of the result of the laundry amount detection. There is nothing that will cause it.

When the bath water use course is executed and the clutch switching / retry control shown in FIG. 19 is performed, the control circuit 64 uses the tap water supply means 24 for the water supply in step S5. I am trying to do it. The purpose of this is as follows. That is, when the pump water supply course, which is the bath water use course, is executed, if the water supply operation in the retry control is performed using the pump water supply means 26, it takes time to complete the water supply operation, and it takes time to complete the retry control execution. It takes a lot of time to deal with this.

The clutch monitoring control shown in FIG. 21 will be described. This control is performed periodically during the weight detection operation in the washing process, the cloth quality detection operation, the washing operation, the first rinsing operation in the rinsing process, and the second rinsing operation shown in FIG. It is supposed to be executed. During each of the above operations, the agitator 5 is rotated, and the clutch 36 is normally in the wash clutch mode state shown in FIG. That is, the state in which the second engaging means 48 is engaged (the convex portion 43a is the hole 45)
Is in the engaged state).

Therefore, in step P1, it is determined whether or not the ON signal is input from the reed switch 52, and if it is input, the control of steps P2 to P7 is not executed. If the off signal has been input, that is, if the clutch 36 is not in the wash clutch mode, the routine goes to Step P2. Here, in the case where the clutch 36 is not in the wash clutch mode, for example, as shown in FIG.
It is possible that 8 is about to come off. Then, by shifting to step P2, the rotation of the motor 27 is stopped. If the vibration is eliminated, the switching member 39 can be expected to rotate upward by the spring force of the toggle spring 42 and the second engagement means 48 to return to the engaged state.

In steps P3 and P4, it is determined whether or not an ON signal is input from the reed switch 52 within a predetermined time, and when the engagement of the second engaging means 48 is restored, the step "YE" on P3
According to "S", the process proceeds to step P5 to restart the rotation of the motor 27. If the ON signal is not input from the reed switch 52 within a predetermined time, the buzzer 72 is driven in a different form from that in step S9 of FIG. 10 to output a different abnormality notification sound, and the washing operation is stopped.

As described above, when the ON signal is not input from the reed switch 52 for a predetermined time, it is possible to detect that the clutch 36 is completely disengaged or the reed switch 52 is broken, and ,
In this case, the buzzer 72 can notify such an abnormality. In step P2, the motor 27 is rotated.
After stopping the rotation, retry control may be executed.
Then, it can be expected that the clutch state will be restored.

Here, when the control of step P2 shown in FIG. 21 is executed during the cloth quality detecting operation, the control circuit 64 outputs the cloth quality detecting operation result (the detection result of the cloth quality detecting means).
Despite this, the quality of the fabric is uniquely set as "standard". The purpose of this is as follows.

That is, if step P2 is executed during the execution of the cloth quality detecting means, the rotation of the agitator is stopped, so that the cloth quality detecting operation by the cloth quality detecting means becomes inaccurate. At this time, the cloth quality erroneous detection range can be reduced by unconditionally setting the cloth quality to "standard" regardless of the detection result of the cloth quality detection means. That is, as the cloth quality, for example, there are three stages of "rigid", "standard", and "supple", but when the actual cloth quality is "rigid", it is erroneously detected as "supple". On the contrary, if the actual cloth quality is “supple” and is falsely detected as “stiff”, the false detection level of the cloth quality becomes two levels, but By setting "standard", the erroneous detection level of cloth quality is at most one level , and the erroneous detection range of cloth quality can be reduced.

Further, the control circuit 64 is under the brake control shown in FIG. 18 and during the energization of positioning (during the rotation stop period).
Only in this case, the control of steps P3 to P7 is not performed starting from the stop of the motor 27 in step P2. That is, the rotation of the motor is not stopped regardless of whether the reed switch 52 is turned on. The purpose of this is as follows.

That is, the fact that the rotation of the motor is descending, or during the brake control or during the rest period of the motor means that the vibration does not increase, and
At this time, if the engagement by the second engagement means 48 is easily disengaged, it is expected that the engagement of the second engagement means 48 will be restored without stopping the rotation of the motor 27. Therefore, it becomes possible to eliminate useless control.

FIG. 22 shows a second embodiment of the present invention, which is different from the first embodiment shown in FIG. 19 in the following points. That is, in FIG. 19 of the first embodiment, after supplying water once in step S5, the motor 27 was rotated twice, but in the second embodiment, as shown in steps Q5 and Q6, Water supply and low motor rotation are repeated. In this embodiment, since the number of times of water supply increases, the certainty of the switching operation of the clutch 36 increases.

The clutch switching determination means need not be a combination of a reed switch and a magnet, and may be a photoelectric switch or the like. In the above embodiment, the clutch switching determination means detects the upward movement of the switching member 39 (engagement movement of the second engagement means 48). However, the rotation stop of the rotary tank 4 is detected. It may be configured to. That is, when the clutch 36 is switched to the washing clutch mode, the rotary tub 4 is fixed.

[0077]

As is apparent from the above description, the present invention can obtain the following effects. According to the invention of claim 1, when the clutch switching determination means does not determine the second clutch mode after the motor is rotated when switching from the first clutch mode to the second clutch mode, the rotation is performed. Since the retry control for supplying water into the tank by the water supply means and rotating the motor is executed,
Switching from the clutch mode to the second clutch mode,
That is, it is possible to reliably perform the clutch switching operation from the connected state of the rotary tank and the stirring body to the disconnected state.

According to the second aspect of the present invention, after the retry control is executed by the retry control executing means, the clutch switching judging means does not judge that the clutch is in the second clutch mode, that is, the clutch switching operation is reliable. When not performed, the notification means is caused to perform the notification operation and the washing operation is stopped, so that the abnormality can be notified and the washing operation in the abnormal state can be prevented.

According to the invention of claim 3, when the laundry amount detecting means is executed after the retry control is executed, the water level is set to a high water level regardless of the result of the laundry amount detection. Even if an error occurs in the detection result of the laundry amount by executing the retry control, it is possible to prevent the water amount from becoming insufficient as much as possible.

According to the invention of claim 4, when the pump water supply course is being executed, the tap water supply means is used for the water supply operation in the retry control.
It is possible to shorten the time required to complete the water supply operation as compared with the case where bath water is supplied, and it is possible to eliminate the time required to complete retry control execution.

According to the fifth aspect of the present invention, the feed water level at the time of executing the retry control is set to the specified water level at which the rotation of the stirring body is started. The retry control can be executed with a sufficiently high water level such as not to cause the above, and the clutch switching operation becomes more reliable.

According to the sixth aspect of the present invention, when the clutch switching determination means does not determine that it is in the second clutch mode in the washing process or the rinsing process, the rotation of the motor is stopped, the retry control is executed, and then the retry control is executed. , The control for restarting the rotation of the motor from the time when the clutch switching judging means judges that the clutch is in the second clutch mode,
Even if the clutch state becomes incomplete during the washing process and the rinsing process, these can be detected, and it can be expected that the clutch will return to the complete state, and when the clutch state becomes the complete state, the washing operation will be performed. In addition, the rinsing operation can be restarted, so that the washing operation and the rinsing operation can always be performed in a good clutch state.

[0083]

According to the invention of claim 7 , when the clutch monitoring control means is executed during execution of the cloth quality detecting means,
Since the cloth quality is uniquely set to "standard" regardless of the detection result of the cloth quality detection means, the cloth quality erroneous detection range can be reduced.

According to the invention of claim 8 , the rotation of the motor is not stopped irrespective of the determination result of the clutch switching determination means only while the rotation of the motor is descending, or during the brake control or the idle period of the motor. Therefore, useless motor stop control can be eliminated.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a clutch portion showing a first embodiment of the present invention.

FIG. 2 is a partially cutaway side view of a clutch portion having a different clutch state.

FIG. 3 is a partially cutaway side view of a clutch portion having a different clutch state.

FIG. 4 is a vertical sectional side view of the washing machine.

FIG. 5 is a plan view of a partially broken washing machine.

FIG. 6 is a vertical sectional side view of a mechanical portion.

FIG. 7 is a vertical cross-sectional side view of a mechanism portion having a different clutch state.

FIG. 8 is an exploded perspective view of main parts of a motor and a clutch.

FIG. 9 is an enlarged perspective view of a clutch portion.

FIG. 10 is a partial perspective view of a switching member.

11A is a vertical side view of the reed switch and the cover portion, and FIG. 11B is a bottom view of the same portion.

FIG. 12 is a bottom view of the water receiving tank without the rotor.

FIG. 13 is a bottom view of a clutch portion.

FIG. 14 is a bottom view of a clutch portion in different states.

FIG. 15 is a perspective view of a control lever

FIG. 16 is a diagram showing an electrical configuration.

FIG. 17 is a time chart showing a washing process.

FIG. 18 is a diagram showing the manner of rotation of the motor in the washing process and the rinsing process.

FIG. 19 is a flowchart showing clutch switching / retry control.

FIG. 20 is a flowchart showing clutch switching control.

FIG. 21 is a flowchart showing clutch monitoring control.

FIG. 22 is a view corresponding to FIG. 19 showing a second embodiment of the present invention.

FIG. 23 is a vertical sectional side view of a mechanical portion of the washing machine before improvement of the present invention.

FIG. 24 is a vertical cross-sectional side view of a mechanism portion having a different clutch state.

FIG. 25 is a partially cutaway side view of a clutch portion.

[Explanation of symbols]

2 is an outer tank, 4 is a rotary tank, 5 is an agitator, 10 is a mechanism housing, 15 is a tank shaft, 18 is a stirring shaft, 24 is tap water supply means, 26 is pump water supply means, 27 is a motor, 28 is A stator, 32 is a rotor, 36 is a clutch, 37 is a holder, 39 is a switching member, 42 is a spring, 43a and 43b are convex portions, 44 is an operated portion, 44a and 44b are inclined surfaces, 45 is a hole, and 46 is a convex portion. , 47 is first engaging means, 48 is second engaging means, 50 is a magnet, 51 is a cover, 52 is a reed switch, 53 is a clutch switching determination means, 54 is a control lever, 55 is a geared motor, 56 Is a main driving part, 57 is a driven part, 57a is an inclined piece, 59 is an inclined piece, 61 is a lever spring, 64 is a control circuit (retry control execution means, clutch monitoring control means, laundry amount detection means, cloth quality detection means). , 7
Reference numeral 2 indicates a buzzer (informing means).

Front page continuation (72) Inventor Satoru Matsumoto 2 33-10 Nanishi, Nishi-ku, Nagoya-shi Toshiba Abu E Co., Ltd. Nagoya Office (72) Inventor Yoshiyuki Makino 2 33-10 Meishi, Nishi-ku, Nagoya No. TOSHIBA AV E, Ltd. Nagoya Office (56) References JP-A-11-33278 (JP, A) JP-B-3-31080 (JP, B2) (58) Fields investigated (Int.Cl. ⁷ , DB name) D06F 33/02 D06F 37/40

Claims (8)

(57) [Claims] 1. A rotary tank rotatably provided in a water receiving tank.
When a stirring member provided on the bottom of the inside rotatable tub, a stirring shaft connected to the agitator, and a motor coupled with the agitator shaft, first provided in a portion which rotates integrally with the agitator shaft The employee
A joint part, a tank shaft connecting the rotary tank, and a mechanism housing attached to the outer bottom of the water receiving tank.
The second engaged portion provided and the tank shaft are vertically movable and integrally mounted.
And a first engagement that engages the first engaged portion in the lower position
Has a portion and is engaged with the second engaged portion at an upper position
A second engaging portion for
The motor, the stirring shaft, and the tank shaft are engaged by the engagement of the first engaging portion.
A first clutch mode for connecting the
Mechanism of the rotary tank by engagement of the second engaging part with the part
Part is fixed to the housing and the motor is connected only to the stirring shaft.
And a control member for moving the clutch to an upper position and a lower position.
And the clutch is provided from the first clutch mode to the second clutch mode.
The motor is rotated at a low speed when switching to the switch mode.
Then move the clutch to the upper position by the control member.
Switching to the second clutch mode, the second clutch mode
When switching to the first clutch mode from
Move this clutch to the lower position by operating the control member.
Moved to switch to the first clutch mode
It is one, and the clutch switching determining means for determining whether or not the second clutch aspect, a water supply means for supplying water to the rotary tub, switching to the second clutch mode from said first clutch aspect At this time, when the clutch switching determination means does not determine that the clutch is in the second clutch mode after rotating the motor, the retry control for supplying water into the rotary tank by the water supply means and rotating the motor is executed. A washing machine, comprising: 2. When the clutch switching determination means does not determine that the clutch is in the second clutch mode after the retry control is executed by the retry control execution means, the notification means is caused to perform the notification operation and the washing is performed. The washing machine according to claim 1, wherein the washing machine is stopped. 3. A washing course is provided in which a laundry amount is stored in a rotating tub and water is not stored, and an operation course for setting the water level according to the detection result is provided, and after the retry control is executed, this washing process is performed. The washing machine according to claim 1, wherein the water level is set to a high water level regardless of the result of the laundry amount detection when the article amount detecting means is executed. 4. A tap water supply means for supplying water from a water supply as a water supply means, and a pump water supply means for supplying water from a water source different from the water supply by a pump, and a pump water supply means as an operation course. It is equipped with a pump water supply course using, and when this pump water supply course is being executed,
The washing machine according to claim 1, wherein the water supply operation in the retry control is performed by using tap water supply means. 5. A washing process or a rinsing process,
It is equipped with a function to control the rotation of the agitator when the water level supplied to the rotary tank reaches a specified water level lower than the set water level. The washing machine as set forth in claim 1, wherein: 6. A rotary tank rotatably provided in the water receiving tank.
When a stirring member provided on the bottom of the inside rotatable tub, a stirring shaft connected to the agitator, and a motor coupled with the agitator shaft, first provided in a portion which rotates integrally with the agitator shaft The employee
A joint part, a tank shaft connecting the rotary tank, and a mechanism housing attached to the outer bottom of the water receiving tank.
The second engaged portion provided and the tank shaft are vertically movable and integrally mounted.
And a first engagement that engages the first engaged portion in the lower position
Has a portion and is engaged with the second engaged portion at an upper position
A second engaging portion for
The motor, the stirring shaft, and the tank shaft are engaged by the engagement of the first engaging portion.
A first clutch mode for connecting the
Mechanism of the rotary tank by engagement of the second engaging part with the part
Part is fixed to the housing and the motor is connected only to the stirring shaft.
And a control member for moving the clutch to an upper position and a lower position.
And the clutch is provided from the first clutch mode to the second clutch mode.
The motor is rotated at a low speed when switching to the switch mode.
Then move the clutch to the upper position by the control member.
Switching to the second clutch mode, the second clutch mode
When switching to the first clutch mode from
Move this clutch to the lower position by operating the control member.
Moved to switch to the first clutch mode
And a clutch for determining whether or not it is the second clutch mode.
H switch switching determination means , water supply means for supplying water into the rotary tub, and clutch switching in the washing or rinsing process.
The judging means does not judge that it is the second clutch mode.
When the rotation of the motor is stopped, the
Rittor for supplying water by means of water supply and rotating the motor
A retry control execution means for executing control, and retry control execution by this retry control execution means,
A washing machine, comprising: clutch monitoring control means for controlling to restart the rotation of the motor when the clutch switching determination means determines that the clutch is in the second clutch mode. 7. A rotating tank based on rotating an agitator.
A cloth quality detecting means for detecting the cloth quality of the laundry inside is provided, and the clutch monitoring control means is actually operated during the execution of the cloth quality detecting means.
When it is done, the result of the cloth quality detection
The washing machine according to claim 6 , wherein the cloth quality is uniquely set to "standard" . 8. The clutch monitoring control means rotates the motor.
During descent, brake control, or motor pause
Only during the period, the judgment result of the clutch switching judgment means is
The washing machine according to claim 6 , wherein the rotation of the motor is not stopped .