JPH07265579A - Spin-dry type washing machine - Google Patents

Abstract

PURPOSE:To change over the drive power required for washing and spin-drying with a simple structure while restraining laundry from rushing out, and to restrain occurrence of vibration during spin-drying. CONSTITUTION:A clutch float 45 for coupling a shaft 24 rotated by a motor 13 and fixed to an agitator 50 with an inner tank (spinning tank) 40 through the meshing between an external gear 47 and an internal gear 49 during normal operation and during spin-drying operation, and is floated in water so as to disengage the shaft 24 from the inner tank 40 by disengaging the external gear 47 from the internal gear 49. Further, a rotation checking clutch float 32 float up in water so s to couple the inner tank 40 with an outer tank (non rotating tank) 5 during washing, and disengages the inner tank 40 from the outer tank 5 during normal operation or spin-dry operation. Further, output generating means generates an output which differs in accordance with a vertical position of the clutch float 45, and the vertical position of the clutch float 45 during the washing or the spin drying is determined in accordance with the output in order to carry out the operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine for both dehydration and washing, in which power is switched between washing and dewatering by utilizing the buoyancy of water.

[0002]

2. Description of the Related Art Conventionally, in a washing machine for combined use of dehydration,
A motor is commonly used for washing and dewatering, and the power of this motor is transmitted to an agitator in a rotating tub during washing, and the agitator is rotated to perform washing, and the rotating tub and the agitator during dewatering. I am trying to dehydrate them by rotating them. Therefore, conventionally, such power switching is performed by a clutch mechanism mainly composed of a clutch spring provided in the middle of a power transmission path from the motor to the stirring body and the rotary tank.

However, the clutch spring requires precision in the number of windings, the inner diameter, and the like.
An electromagnet and a motor for controlling the operation of the clutch spring are also required, and the structure is complicated and expensive. On the other hand, there is a combined washing machine for dehydration disclosed in JP-A-57-103690 and JP-A-62-268343.

In these devices, a float chamber is formed in the outer bottom portion of a rotary tank, and the rotary tank is brought into contact with a transmission member mounted on a shaft which is normally rotated by a motor together with an agitator and a passive portion, At the time of washing, water is stored inside the rotary tub together with the inside of the non-rotating tub (outer tub) in which the rotary tub is installed, so that air is trapped in the float chamber to float the rotary tub. Separate the passive part,
The rotational force of the motor is transmitted only from the shaft to the agitator, not to the rotary tank, and
At the time of dehydration, the water in the rotating tank and the non-rotating tank is discharged, so that the rotating tank descends to bring the passive part into contact with the transmission body, and the rotational force of the motor from the shaft together with the stirring body causes the rotation tank to rotate. It is supposed to be transmitted to. According to these, the structure is simple, the parts precision is not required to be very high, and the cost can be provided at a low cost.

[0005]

However, in the above-mentioned one, since the rotary tub floats during washing, it is necessary to secure a large gap above the rotary tub, and when the rotary tub descends, the large gap is required. There was a risk that the laundry would jump out from. In addition, the large gap increases the overall height, making it difficult to take out the laundry from above. Furthermore, when the rotary tank descends, it tilts,
Since the rotational force of the motor can be transmitted while it is inclined, there is also a problem that the rotary tank shakes during dehydration and abnormal vibration is likely to occur.

The present invention has been made in view of the above circumstances. Therefore, the object is not only that the structure is simple and the accuracy of parts is not so high, but also the laundry is easy to pop out or difficult to take out. It is an object of the present invention to provide a washing machine for combined use of spin-drying, which does not become liable to cause abnormal vibration during spin-drying and can switch the required power.

[0007]

In order to achieve the above object, a washing machine for combined use of dehydration according to the present invention comprises a rotating tub and an agitator disposed inside the agitator, and the agitator is rotated during washing. The washing machine is used for washing, and the spin tub is rotated together with the agitator at the time of dewatering for dewatering. A motor that is a drive source for both rotations and a shaft that is rotated by this motor and has the agitator fixed thereto. And with
A clutch float is provided around the shaft, which connects the shaft and the rotary tub during normal and dehydration, and floats in water accumulated around the shaft during washing to disconnect the connection between the shaft and the rotary tub. Is characterized by.

In this case, it is preferable that the clutch float is made to rotate integrally with the shaft and float along the shaft by engagement of the concave and convex portions provided on the outer peripheral portion of the shaft and the inner peripheral portion of the clutch float, It is advisable to engage and disengage the outer teeth provided on the clutch float with the inner teeth provided on the rotary tank side to connect and disconnect the rotary tank.

Further, the outer teeth of the clutch float may be formed in a taper shape which is tapered in the direction of the inner teeth on the rotary tank side. In this case, the tip circle diameter of the tip of the clutch float outer teeth is the same as that of the rotary tank. It is recommended to set the size smaller than the dimension of the root diameter of the root of the side internal tooth. Further, the clutch float may be formed of foamed plastic having many bubbles inside,
Alternatively, it may have an air chamber.

On the other hand, in the dehydrating and washing machine of the present invention, the rotating tub is arranged in the non-rotating tub, the agitator is arranged in the rotating tub, and the agitator is rotated at the time of washing for washing. In the case where the rotary tub is rotated together with the agitator during the dehydration for dehydration, the rotary tub floats on water during washing and connects the rotary tub to the non-rotating tub, and disconnects the connection during normal and dehydration. It is also characterized by having a stop float.

In this case, the non-rotating float is provided so that it can be floated by the engagement of the concave and convex portions provided on the non-rotating tank side and the non-rotating tank and is always restrained by the non-rotating tank. It is preferable that the teeth provided and the teeth provided on the rotary tank side are connected and disconnected to and from the rotary tank. Further, it is preferable that the non-rotating float is provided together with the clutch float, and the rotary tub has a dehydration opening only in the upper portion, and the outer non-rotating tub of the external non-rotating tub is passed from the inside of the rotary tub through the central portion of the bottom during washing. In the case of storing water in a water channel formed to reach the bottom drainage port, a clutch float may be arranged in the water channel.

An output generating means for generating different outputs depending on the vertical position of the clutch float at the time of washing and dehydration is provided, and the vertical position at the time of washing and dehydration of the clutch float is determined from the output of this output generating means. It is advisable to provide a control means for controlling to execute the operation. In this case, the output generating means may generate an output according to the vertical position of the clutch float at the time of washing and dewatering with the load amount of the motor. The load amount of the motor includes the drive current, applied voltage, and rotation speed of the motor.

Further, when it is determined that the vertical position of the clutch float during washing and dehydration is inaccurate, the control means may reverse the motor for an extremely short period or rotate the motor at a reduced speed. It is even better to repeat the above multiple times. In addition, the control means may control the abnormality notification when it is determined that the vertical position of the clutch float is incorrect during washing and dehydration.

[0014]

According to the above means, the required power switching between washing and dehydration is performed by floating and lowering the clutch float provided around the shaft, not by floating and lowering the rotary tub. Therefore, it is not necessary to secure a large gap above the rotary tank, and it is also possible to prevent the rotational force of the motor from being transmitted when the rotary tank is tilted.

In this case, the clutch float is configured so as to rotate integrally with the shaft and float along the shaft by engagement of the concave and convex portions provided on the outer peripheral portion of the shaft and the inner peripheral portion of the clutch float. It is possible to reliably transmit power from the shaft to the clutch float while allowing the clutch float to float and descend along the shaft.

In the clutch float, the clutch float is connected and disconnected by engaging and disengaging the external teeth provided on the clutch float with the internal teeth provided on the rotary tank side. It is possible to reliably transmit and shut off power from the rotary tank to the rotary tank.

Further, in the case where the external teeth of the clutch float are formed in a taper shape which is tapered toward the internal teeth on the rotary tank side,
It is possible to smoothly transfer power from the clutch float to the rotary tank and switch the state of interruption.
Particularly in this case, if the size of the tip circle diameter of the tip part of the clutch float external tooth is set smaller than the size of the root circle diameter of the inlet part of the rotary tank side internal tooth, the switching of the state will be smoother. You can do it.

When the clutch float is made of foamed plastic, the floating property of the clutch float can be improved. Even if the clutch float has an air chamber, the floating property of the clutch float can be improved.

On the other hand, the rotary tub is provided in the non-rotating tub, and the agitating body is provided in the rotary tub. The agitating body is rotated during the washing for washing, and the rotary tub is provided together with the agitating body during the dehydration. In the case of being rotated for spin-drying, the spin tub floating on water at the time of washing is connected to the non-rotating tub, and the spin float is provided to interrupt the connection during normal and spin-drying. The rotation of the rotary tank can be reliably stopped by the float.

In this case, the non-rotating float is provided so that it can be floated by the engagement of the concave and convex portions provided on the non-rotating tank side and the non-rotating tank and is always restrained by the non-rotating tank. In the case of connecting and disconnecting with the rotating tank by engaging and disengaging the provided teeth with the teeth provided on the rotating tank side, the rotation tank can be stopped while allowing the detent float to float and descend. ， Can be reliably released.

Further, in the case where the anti-rotation float is provided with the clutch float, the necessary power can be switched between washing and dehydration, and the rotation tank can be stopped and released by the float. It can be further simplified.
Further, in the rotary tub having a dehydration opening only in the upper part, and water is stored in a water passage formed from the inside of the rotary tub through the central portion of the bottom to the bottom drain of the external non-rotating tub during washing. By disposing the clutch float in the water passage, it is possible to switch the required power between washing and dehydration while saving the amount of water used.

An output generating means for generating different outputs depending on the vertical position of the clutch float during washing and dehydration is provided, and the vertical position during washing and dehydration of the clutch float is determined from the output of this output generating means. In the case where the operation is executed in this manner, the operation can be performed according to the actual vertical position of the clutch float during washing and dehydration.

In this case, the output generating means generates an output according to the vertical position of the clutch float at the time of washing and dewatering according to the drive current of the motor, the applied voltage, and the load amount such as the number of revolutions. However, since the difference due to the vertical position of the clutch float at the time of washing and dehydration is clearly shown, the vertical position of the clutch float can be more reliably determined.

Further, when it is determined that the vertical position of the clutch float is inaccurate during washing and dehydration, the motor may be reversed for a very short period of time or rotated at a reduced speed. The position of can be corrected correctly. Especially in that case,
By repeating such control a plurality of times, the position of the clutch float can be corrected more correctly.

When it is determined that the vertical position of the clutch float is inaccurate during washing and dehydration, an abnormality is informed that the vertical position of the clutch float is incorrect during washing and dehydration. The user can be more surely notified of the existence.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. First, FIG. 2 shows an outer box 1 of the entire washing machine for combined use of dehydration, in which a plurality of (1
The outer tub 5, which is a non-rotating tub, is arranged in an elastically supported state through the elastic supporting mechanism 4 including the hanging rod 2 (only the book is shown) and the spring 3 and the like provided on each hanging rod 2. .

As shown in FIG. 3, a hole 6 having a relatively large diameter is formed in the central portion of the bottom of the outer tub 5, and a plurality of ( (Only one is shown)
The boss 7 is formed together with the reinforcing rib 8, and the boss 7
The upper bracket 9 and the lower bracket 10 are fastened together by bolts 11 and attached. In this case, the upper bracket 9 is watertightly inserted into the hole 6 of the outer tub 5 via the seal 12.

On the other hand, the lower bracket 10 has a motor 13,
In particular, this stator 14 is attached by a plurality of screws 15. The motor 13 is a variable speed motor such as an inverter motor that can obtain a rotation speed suitable for a washing operation to a rotation speed suitable for a dehydration operation, and is a so-called outer rotor type.
6 and more specifically, the cores 19 are inserted into the bobbin portions 18 provided in the required number around the stator base 17 made of plastic, and the coils 20 are wound around the exposed outer end surfaces of the cores 19. The exposed inner end surface 22a of the magnet 22 provided in the required number around the peripheral portion of the plastic rotor base 21 is made to face 19a.

Thus, the rotor base 21 of the motor 13
A hollow shaft portion 23 is formed at the center, and the shaft portion 2
A shaft 24 is inserted into the shaft 3 and is prevented from coming off by a cap nut 25. The portion of the shaft 24 opposite to the cap nut 25 is
A hollow outer shaft 2 which is watertightly inserted and supported on the lower bracket 10 and the upper bracket 9 via a lower ball bearing 26 and an upper ball bearing 27, respectively, and via the seal 12.
8, a lower metal bearing 29 and an upper metal bearing 30 as well as a seal 31 are also watertightly inserted and supported.

On the outer shaft 28, a whirl-stop float 32 is vertically movably fitted around a portion protruding into the outer tub 5. This non-rotating float 32 has a specific gravity of "1"
It is made of polypropylene, which is a smaller material that floats in water, and in particular plastic, and is a cheaper general material. Lower teeth 33 are provided around the lower surface and upper teeth 34 are provided at the upper surface. 4 and 5 are formed in a radial pattern.

On the other hand, teeth 35 are formed in the upper part of the peripheral portion of the hole 6 of the outer tank 5 (see FIG. 4).
5, the lower teeth 33 of the whirl-stop float 32 are engaged from above so that the whirl-stop float 32 is constantly restrained by the outer tub 5. On the other hand, a flange 36 is formed in a portion of the outer shaft 28 which is further above the detent float 32, and teeth 37 are formed on the lower surface of the flange 36 (see FIG. 5). Non-rotating float 32
The upper teeth 34 are exposed from below.

Here, a support plate 38 is placed on the flange 36 of the outer shaft 28 and attached by a plurality of bolts 39, which is a rotary tank housed in the outer tank 5. The inner tank 40 is placed and similarly attached by a plurality of bolts 41. Holes 42 and 43 are formed in the center of the bottom of the support plate 38 and the inner tank 40.
A ring portion 44 formed at the upper end portion of the outer shaft 28 is located inside the outer shafts 2 and 43, and the upper portion of the shaft 24 projecting upward is located inside the inner tank 40.

A clutch float 45 is fitted around the upper portion of the shaft 24. This clutch float 4
Like the non-rotation float 32, 5 is a material having a specific gravity smaller than "1" and floating in water, especially plastic, and is formed of polypropylene which is a cheaper general material. 46 and outer teeth 47 on the outer peripheral portion
Are formed in large numbers as shown in FIG.

On the other hand, on the outer periphery of the upper portion of the shaft 24, external teeth 48 are formed axially upwardly longer than the clutch float 45. The internal teeth 46 of the clutch float 45 are meshed with the external teeth 48. The serration joint structure. Further, the ring portion 44 of the outer shaft 28 is formed with inner teeth 49 on the inner periphery thereof, and the outer teeth 47 of the clutch float 45 are meshed with the inner teeth 49 so that the clutch float 4
5 is connected to the inner tank 40, and further, the shaft 24 is connected to the inner tank 40 via the clutch float 45. The ring portion 44 of the outer shaft 28 is also formed with a drainage hole 44a at the lowermost portion on the peripheral side. An agitator 50 housed in the bottom of the inner tank 40 is attached and fixed to the upper end of the shaft 24 with a screw 51.

A plurality of small water passage holes 52 are formed around the hole 42 of the support plate 38 as shown in FIG. 7, and the seal ring 53 and the seal 5 attached below the small water passage holes 52 are formed.
4, the water-conducting cover 55 is communicated with the water-conducting cover 55, and the water-conducting cover 55 is attached to the bottom surface of the outer tank 5 with a plurality of bolts 57 via seals 56. As shown in FIG. By communicating with the first drainage port 58 formed in the section, a water channel 59 is formed from the inside of the inner tub 40 through the central portion of the bottom to the first drainage port 58 of the outer tub 5. The clutch float 45 and the detent float 32 are located at the position.

Further, an air trap 60 for detecting the water level is provided in parallel at the first drain port 58 of the outer tank 5, and these are connected to a drain hose 62 via a drain valve 61.
In addition, a second drain port 63 that directly communicates (omitted) with the drain hose 62 is formed in the bottom corner portion of the outer tub 5 on the side opposite to the first drain port 58 (left side in FIG. 2). is doing.

Further, in the inner tank 40, a large number of dehydration holes 64, which are openings for dehydration, are formed only in the upper end portion in, for example, a horizontal row, and a balance ring 65 is provided in the inner portion thereof for the dehydration. They are attached with a gap in between. Further, a ring-shaped tank cover 66 is mounted on the upper end of the outer tank 5, and a top cover 67 is mounted on the uppermost part of the outer box 1 above it. Inside the top cover 67, a control device 68 as a control means including a microcomputer, for example, is arranged in the front part, and a water supply device 69 mainly composed of a water supply valve 69a is arranged in the rear part.

By the way, in the case of the configuration as described above,
Under the control of the controller 68, at the time of washing, water is first supplied from the water supply device 69 into the inner tub 40. This inner tank 40
The water supplied into the inner tank 40 passes through the water passage small hole 52 of the support plate 38, the seal ring 53, the water guide cover 55, that is, the water passage 59, and the first drain port of the outer tank 5. 5
8 in order to reach the closed drainage valve 61 portion, from which the water level is raised sequentially to fill the waterway 59, and
It is stored up to the set water level in the inner tank 40.

Thus, by storing water in this way, in the water channel 59, as shown in FIG. 8, the detent float 32 floats and the clutch float 45 floats. As a result, the whirl-stop float 32 moves the lower teeth 33 to the outer tank 5
The upper teeth 34 of the outer shaft 28 are kept in mesh with the teeth 35 of the outer shaft 28.
7, the outer shaft 28 is connected to the outer tub 5, and the inner tub 40 attached via the support plate 38 is connected to the outer tub 5. Therefore, the inner tub 40 is integrated with the outer shaft 28. Is stopped.

On the other hand, the clutch float 45 has internal teeth 46.
While engaging the outer teeth 48 of the shaft 24 with the outer teeth 47
Is disengaged from the inner teeth 49 of the outer shaft 28, the connection with the inner tank 40 is released, and the connection between the shaft 24 and the inner tank 40 is released.

Therefore, at this time, the rotational force of the motor 13 transmitted to the shaft 24 is not transmitted to the inner tank 40 but only to the stirring body 50 fixed to the shaft 24, and thus the stirring body 50. Only is rotated. By the rotation of the stirring body 50, the laundry put in advance in the inner tub 40 is stirred together with water to wash. or,
At this time, the inner tub 40 continues to be prevented from rotating by the detent float 32, so-called co-rotation with the stirring body 50 is blocked, and the stirring force of the stirring body 50 is effective in effectively acting on the laundry and water. Play.

On the other hand, at the time of dehydration, first, the drain valve 61 is opened so that the water in the inner tank 40 is drained from the water channel 59 through the drain hose 62. As a result, as shown in FIG. 1, the clutch float 45 descends and the detent float 32 also descends. Therefore, clutch float 4
5 returns to a state in which the outer teeth 47 are in mesh with the inner teeth 49 of the outer shaft 28 while keeping the inner teeth 46 in mesh with the outer teeth 48 of the shaft 24, and returns to the connected state with the inner tub 40 to return to the shaft 24.
It returns to the state of connecting the inner tank 40 with

Further, the detent float 32 disengages the upper teeth 34 from the teeth 37 of the outer shaft 28 and returns to a state in which the lower teeth 33 are meshed with the teeth 35 of the outer tub 5, so that the outer shaft 28 is removed. The connection with the tank 5 is released, and the inner tank 40 is then released from the connection with the outer tank 5 to return to the freely rotatable state.

Therefore, at this time, the rotational force of the motor 13 transmitted to the shaft 24 is transmitted to the stirring body 50 and also to the inner tank 40 via the clutch float 45, and thus together with the stirring body 50. 40 is rotated. By the rotation of the inner tub 40, water is squeezed out of the laundry in the inner tub 40 by a centrifugal force, and the squeezed water rises up the inner peripheral surface of the inner tub 40 and the dehydration hole 64 at the upper end portion. Further, the water discharged from the dehydration hole 64 is received by the inner peripheral surface of the outer tub 5, flows down the inner peripheral surface of the outer tub 5, and the second drain port 63 Is discharged from the machine through the drain hose 62. In the case of this configuration, braking of the rotation of the inner tank 40 is performed by, for example, generating braking of the motor 13.

As described above, in this structure, the clutch float 45 is provided around the shaft 24 rotated by the motor 13 to switch the required power between washing and dehydration.
The floating and lowering of the inner tank 40 are not performed by the conventional clutch mechanism having a clutch spring as a main component, and the floating and lowering of the inner tank 40 are not performed.

Therefore, the structure is simple and the parts precision is not required to be very high. In particular, it is not necessary to secure a large gap above the inner tub 40, and the laundry jumps out from the gap during dehydration. Also, it is possible to solve the problem of difficulty in taking out laundry due to the increase in the overall height. In addition, in this case, the inner tank 40 is the outer shaft 28.
Since it is still fixed to the flange 36 of the above, it does not cause a tilt unlike the conventional floating thing, and the rotational force of the motor 13 is not transmitted with the tilt, so that when the water is dehydrated due to the tilt. It is possible to prevent the occurrence of vibrations, especially abnormal vibrations.

Further, in the case of the above structure, the clutch float 45 is provided with the external teeth 48 provided on the outer peripheral portion of the shaft 24.
By engaging with the concave and convex portions of the internal teeth 46 provided on the inner peripheral portion of the clutch float 45, the clutch float 45 rotates integrally with the shaft 24 and floats along the shaft 24. It is possible to reliably transmit the power from the shaft 24 to the clutch float 45 while allowing the clutch float 45 to float and descend. In this case, the shaft 24 and the clutch float 45 may be engaged with each other by the engagement structure with a hole having the same shape as a non-circular portion such as a D-shaped cross section instead of the teeth 48 and 46.

Also, the clutch float 45 is connected and disconnected with the inner tub 40 by engaging and disengaging the outer teeth 47 provided on the clutch float 45 and the inner teeth 49 provided on the outer shaft 28 on the inner tub 40 side. By doing so, the power transmission from the clutch float 45 to the inner tank 40 and the interruption thereof can be reliably performed, and moreover, the movement of the tooth pitch can be performed in a short time. On the other hand, in the above-mentioned structure, the inner tub 40 floats on water during washing and connects the inner tub 40 to the outer tub 5, and the detent float 32 that cuts off the connection during normal and dehydration is provided. The detent can be reliably performed by the float.

In this case, the whirl-stop float 32 is floatable by the engagement between the teeth 35 provided on the outer tub 5 and the lower teeth 33 provided on the whirl-stop float 32, and is constantly restrained by the outer tub 5. In addition, the upper teeth 34 provided on the anti-rotation float 32 and the teeth 37 provided on the outer shaft 28 are engaged with and disengaged from the inner tank 40 so as to connect and disconnect the inner tank 40. Stop float 32
It is possible to surely stop and release the inner tank 40 while allowing the floating and lowering of the inner tank.

Further, by providing the anti-rotation float 32 together with the clutch float 45, it is possible to switch the required power between washing and dehydration, and to stop and release the inner tub 40 by using the float. Therefore, the structure can be further simplified.

Further, the inner tub 40 has the dehydration hole 64 only in the upper part, and the inner tub 40 is passed through the central part of the bottom from the outer tub 5 during washing.
Since the water is stored in the water channel 59 formed to the first drainage port 58, the water is not stored in the outer tub 5, that is, the amount of water used can be saved for washing. Clutch float 4 in the waterway 59
By disposing the 5 and the whirl-stop float 32, it is possible to switch the required power between washing and dehydration without impairing the water saving effect.

As shown in FIG. 9, the inner tub 40 is provided with dehydration holes 64 not only in the upper portion but also in the entire peripheral side portion, and the formation of the water channel 59 and the second drainage port 63 is stopped to wash the inner tub 40 at the time of washing. Even in the case where water is stored from the inner tank 40 to the outer tank 5, the clutch float 45 and the whirl-stop float 32 can be provided in the same manner as described above and can perform the switching function in the same manner as described above.

Further, as shown in FIG. 10, the clutch float may be a clutch float 72 in which the outer teeth 70 are tapered so as to taper toward the inner teeth 71 of the outer shaft 28. Particularly, in this case, Power transmission to the outer shaft 28 and switching of the cutoff state can be smoothly performed.

Further, in this case, the dimension D1 of the tip circle diameter of the tips of the outer teeth 70 of the clutch float 72 is set smaller than the dimension D2 of the root circle diameter of the inlet of the inner teeth 71 of the outer shaft 28. Cage (D1 <D2), which enables smoother switching between the transmission of the power from the clutch float 72 to the outer shaft 28 and the disconnection state. It should be noted that this FIG.
At 0, the inner teeth 71 of the outer shaft 28 also move to the clutch float 72.
The external teeth 70 formed in the same taper shape are shown.

In addition, the clutch floats 45 and 72 and the detent float 32 are made of foamed plastic having a large number of bubbles inside, so that the floating property can be improved. In this case, non-rotating float 3
11, the hollow sealing ring 73 is attached by a screw 74 as shown in FIG.
5 may be included. Further, as shown in FIG. 12, the detent float and the clutch float themselves may be hollow seal type detent float 76 and clutch float 77, and may have an air chamber 78 inside. However, the floating property can be improved.

On the other hand, in the motor 13, as shown in FIG. 13, a plastic stator base 79 is directly attached to the boss 7 of the outer tub 5 together with the upper bracket 9 by bolts 80. The lower bracket 10 may be eliminated when the lower bracket 28 is supported by the lower ball bearing 26. In this case, the lower ball bearing 27 is held by interposing a bush 81, for example, made of aluminum, which has a smaller thermal deformation rate than plastic, in a portion in contact with the lower ball bearing 26 of the stator base 79 by insert molding, for example. You can definitely do it.

In contrast to the above, FIGS. 14 to 16 show the second embodiment of the present invention. In this case, FIG.
As shown in FIG. 3, the control device 68 including a microcomputer includes a switch input section 8 including various operation switches.
A switch operation signal is inputted from 2 and a lid switch 8 for detecting opening / closing of a lid provided on the top cover 67.
A lid open / closed detection signal is input from 3 and the inner tank 40
A water level detection signal is input from a water level sensor 84 that detects the water level in the inner or outer tub 5 via the air trap 60, and the clutch float 45 (7)
2, 77) as an output generating means for generating different outputs depending on the vertical position of the motor 13, for example, in this case, a current detection signal is input from a current sensor 85.

Then, based on those inputs and the control program stored in advance, the control device 68
A drive control signal is supplied to the display unit 86 including various display devices, the water supply valve 69a of the water supply device 69, the motor 13, the drain valve 61, and the drive circuit 88 that drives the buzzer 87 that is an abnormality alarm. The control contents of the control device 68 will be described below.

As shown in FIG. 15, the control device 68 initializes the count value "N" for the occurrence of an abnormality in the vertical position of the clutch float 45 at the beginning of its operation (start) (step A1). ). Then, washing, especially "washing" is started (step A2), and in this situation, whether or not the drive current of the motor 13 is equal to or lower than a predetermined value, for example, 3.5 [A], is input by the current sensor 85. Is determined (step A3).

Here, the drive current of the motor 13 during "washing" varies depending on the vertical position of the clutch float 45.
That is, if the clutch float 45 floats on water and is properly disengaged from the inner teeth 49 of the outer shaft 28 during “washing”, the inner tank 40 is not rotated and only the stirring body 50 is rotated. The load amount is small, and a drive current of 3 [A] flows through the motor 13 as shown in FIG.

On the other hand, due to the adhesion of lint, sand or other foreign matter, the clutch float 45 during "washing"
Is not correctly disengaged from the inner teeth 49 of the outer shaft 28,
Since not only the stirring body 50 but also the inner tank 40 is rotated, the load amount of the motor 13 is large, and a drive current of, for example, 4 [A] or more flows to the motor 13 as described above.

The current sensor 85 detects these currents and inputs them to the control device 68, and the control device 68 outputs the drive current of the motor 13 at the time of "washing" to 3.5.
The upper and lower positions of the clutch float 45 are determined by determining whether or not it is less than [A]. In this case, if it is less than 3.5 [A], the clutch float 4
No. 5 is correctly positioned at the upper position, and if it exceeds 3.5 [A], the clutch float 45 is erroneously determined at the lower position.

If it is determined in step A3 that the drive current of the motor 13 is 3.5 [A] or less (the clutch float 45 is correctly in the upper position), the "washing" is continued. (Step A4), 3.5
If it is determined that the value is not less than [A] (the clutch float 45 is erroneously in the lower position), the motor 13 is compared with, for example, the normal 1.5 second energization-0.7 second interruption pattern.
The pattern is reversed in an extremely short period pattern of 0.4 second energization-0.3 second interruption (step A5).

By virtue of the extremely short cycle reversal of the motor 13, vibration is given to the clutch float 45, and if the cause of the abnormality in the vertical position of the clutch float 45 is normal, it is removed and the clutch float 45 is removed. The position of the float 45 can be corrected correctly.

After the step A5, the controller 68 adds "1" to the count value "N" for the occurrence of an abnormality in the vertical position of the clutch float 45 (step A).
6) After that, it is judged whether or not the count value "N" has become a predetermined value, for example, "3", that is, whether or not the vertical position abnormality of the clutch float 45 has been counted three times (step A7), Return to step A3. Then, even in the returned step A3, the drive current of the motor 13 is 3.
If it is determined that it is not less than 5 [A] (the clutch float 45 is erroneously in the lower position), steps A5 to A
Repeat 7 and A3. And step A in the repetition
If it is determined in 7 that the count value "N" has become "3" (the extremely short cycle reversal of the motor 13 for correctly correcting the position of the clutch float 45 has been performed three times), the buzzer 87 is activated. The abnormality is notified (step A8).

On the other hand, before the count value "N" reaches "3" in step A7, the drive current of the motor 13 is 3.5 [A] or less in step A3 (the clutch float 45 is correctly positioned at the upper position). Yes), step A
4 and then "rinse" (step A)
9). In this case, the control as described above is not performed in the "rinsing", but of course it may be performed.

After that, the control device 68 starts dehydration (step A10), and again after that, similarly to step A1, the initial value of the count value "N" for the occurrence of an abnormality in the vertical position of the clutch float 45 is initialized. (Step A11), and then it is determined whether the drive current of the motor 13 is equal to or more than a predetermined value in this case, 3.5 [A], by the input from the current sensor 85 (step A12).

Even during this "dehydration", the drive current of the motor 13 varies depending on the vertical position of the clutch float 45, that is, if the clutch float 45 descends and is properly meshed with the internal teeth 49 of the outer shaft 28. Since the inner tank 40 is rotated together with the stirring body 50, the load amount of the motor 13 is large, and the motor 13 has a load of 4 [A] as shown in FIG.
Drive current flows. On the other hand, the clutch float 45 does not descend sufficiently or at all due to the attachment of thread waste, sand or other foreign matter, and the inner teeth 4 of the outer shaft 28
If it is not meshed with 9, the inner tank 40 is not rotated and only the stirring body 50 is rotated, so that the load amount of the motor 13 is small and the motor 13 has a drive current of the above or below, for example, 3 [A]. Flows.

Therefore, even in step A12, the motor 13
The upper and lower positions of the clutch float 45 are determined by determining whether or not the drive current of is 3.5 [A] or more. In this case, if 3.5 [A] or more,
It is determined that the clutch float 45 is correctly located at the lower position, and if it is less than 3.5 [A], the clutch float 45
Will erroneously be determined to be in the upper position.

Then, in step A12, the motor 13
If it is determined that the drive current of is not less than 3.5 [A] (the clutch float 45 is correctly located at the lower position),
To continue "dehydration" (step A13),
If it is determined that it is not more than 3.5 [A] (the clutch float 45 is erroneously in the upper position), the motor 13 is energized, for example, for 0.4 seconds −0.3, as in step A5.
Reverse with a very short period pattern of power interruption (step A1)
4).

Due to the extremely short cycle reversal of the motor 13, the clutch float 45 is vibrated in the same manner as described above, and if the cause of the abnormality in the upper and lower positions of the clutch float 45 is normal, it is fixed. It can be removed and the position of the clutch float 45 can be corrected correctly.

Further, the control device 68 controls the above step A14.
Is followed by steps A15 and A similar to steps A6 and A7.
After step 16, the process returns to step A12. Then, even in the returned step A16, the drive current of the motor 13 is 3.
If it is determined that it is not more than 5 [A] (the clutch float 45 is erroneously in the upper position), step A14-
Repeat A16 and A12. Then, if it is determined that the count value "N" has reached "3" in step A16 during the repetition, the process proceeds to step A8, and the buzzer 87 is operated to notify the abnormality.

On the other hand, in step A16, the count value "N"
Before the value becomes "3", the drive current of the motor 13 is 3.5 [A] or more in step A12 (clutch float 4
5 is correctly located at the lower position), the process proceeds to step A13, and then the operation ends.

By performing such control, it is possible to operate the clutch float 45 according to the actual vertical position during washing and dehydration. In this case, the clutch float 45
The output generating means for determining the vertical position of the
Since it is generated with a load amount of 3 (driving current in this case), the clutch float 4 during washing and dehydration
Since the difference due to the vertical position of 5 is clearly shown, the vertical position of the clutch float 45 can be determined more reliably.

Further, when it is determined that the vertical position of the clutch float 45 during washing and dehydration is inaccurate, the position of the clutch float is changed by the vibration effect by reversing the motor 13 for an extremely short period. Can be corrected correctly. Especially, in such a case, the clutch float 4 can be obtained by repeating such control a plurality of times.
The position of 5 can be corrected more correctly.

When it is determined that the vertical position of the clutch float 45 during washing and dehydration is inaccurate, an abnormality is notified so that the clutch float 45 moves up and down during washing and dehydration. It is possible to more surely inform the user that the position is incorrect.

FIGS. 17 to 19 show a third embodiment of the present invention. In this case, different outputs of the motor 13 are output depending on the vertical position of the clutch float 45 (72, 77) during washing and dehydration. A voltage sensor 89 is used in place of the above-described current sensor 85 as an output generating unit that generates a load amount, and its output (voltage detection signal) is used as the control device 6.
I am trying to input 8. This is because the motor 13
This is because it is an inverter motor that changes its rotation speed by changing the applied voltage.

In this case, the voltage sensor 89
Input from step B3 instead of step A3
Then, it is determined whether or not the detection voltage value is equal to or lower than a predetermined value, for example, 80 [V]. In Step B12 instead of Step A12, it is determined whether or not the detection voltage value is equal to or higher than the predetermined value, for example, 80 [V]. Make a decision.

In this case, if the clutch float 45 floats on the water and correctly disengages from the inner teeth 49 of the outer shaft 28 during the "washing", the inner tank 40 does not rotate, but only the stirring body 50 rotates. The load amount of the motor 13 is small, and the voltage of 70 [V] can be applied to the motor 13 as shown in FIG. On the other hand, if the clutch float 45 is not correctly disengaged from the inner teeth 49 of the outer shaft 28 during “washing”, not only the stirring body 50 but also the inner tank 40 is rotated, so that the load amount of the motor 13 is To a large extent, it is necessary to apply a voltage of 90 [V] or more to the motor 13 as described above.

Therefore, in step B3, the vertical position of the clutch float 45 is determined by determining whether the voltage applied to the motor 13 is 80 [V] or less. V] or less, it is determined that the clutch float 45 is correctly located at the upper position, and 80
If it exceeds [V], the clutch float 45 is erroneously determined to be in the lower position.

Also, at the time of "dehydration", the clutch float 45
Is lowered and properly meshes with the inner teeth 49 of the outer shaft 28, the inner tank 40 is rotated together with the agitator 50, so that the load amount of the motor 13 is large, and the motor 13 has a large load as shown in FIG. Therefore, it becomes necessary to apply a voltage of 90 [V]. On the other hand, if the clutch float 45 does not descend sufficiently or at all and does not mesh with the inner teeth 49 of the outer shaft 28, the inner tank 40 does not rotate and only the stirring body 50 rotates. The load of the motor 13 is small and the motor 1
For example, a voltage of 70 [V] or less, which has been described above, is applied to the circuit 3.

Therefore, in step B12, the vertical position of the clutch float 45 is determined by determining whether the voltage applied to the motor 13 is 80 [V] or higher. V] or more, it is determined that the clutch float 45 is correctly located at the lower position, and
If it is less than 0 [V], the clutch float 45 is erroneously determined to be in the upper position. Other steps B1, B2, B4 to B11, B13 to B16
Are steps A1, A2, A4 to A11, A13 to A1.
6 is similar to the above, and therefore, the same effect as the above can be obtained.

20 to 23 show a fourth embodiment of the present invention. In this case, different outputs of the motor 13 are output depending on the vertical position of the clutch float 45 (72, 77) during washing and dehydration. As the output generating means generated by the load amount, a rotation speed sensor 90 is used instead of the above-described voltage sensor 89, and the output (voltage detection signal) of the rotation speed sensor 90 is input to the control device 68.

In the case of this one, the rotation speed sensor 9
By inputting from 0, in Step C3 instead of Steps A3 and B3, it is judged whether the time required from the start of rotation of the motor 13 to the value of R1 is 3.5 [seconds] or less. In step C12 instead of steps A12 and B12, the time required from the start of rotation of the motor 13 to the value of R2 is 20.
It is judged whether or not it is more than [seconds].

In this case, if the clutch float 45 floats on the water and is properly disengaged from the inner teeth 49 of the outer shaft 28 at the time of "washing", the inner tank 40 is not rotated and only the stirring member 50 is rotated. The load amount of the motor 13 is small, and the time required from the start of rotation of the motor 13 to the value of R1 is 3 seconds as shown in FIG. On the other hand, the clutch float 45 causes the outer shaft 2
If not properly separated from the inner tooth 49 of 8, the stirring member 5
Not only 0, but also the inner tank 40 is rotated, the motor 13
The time required for the number of rotations to reach the value of R1 from the start of rotation is above the above, for example, 4 seconds.

Therefore, in step C3, it is judged whether the time required from the start of rotation of the motor 13 to reach the value of R1 is 3.5 [seconds] or less, and the clutch float is determined. The upper and lower positions of the clutch 45 are determined. In this case, if it is 3.5 seconds or less, it is determined that the clutch float 45 is correctly located at the upper position,
If it exceeds 3.5 seconds, the clutch float 45 is erroneously determined to be in the lower position.

Also, at the time of "dehydration", the clutch float 45
Is lowered and properly meshes with the inner teeth 49 of the outer shaft 28, the inner tank 40 is rotated together with the agitator 50, so that the load amount of the motor 13 is large, and the rotation speed of the motor 13 is increased from the start of rotation. Figure 23 shows the time required to reach the value of R2.
It is 30 seconds as shown in. On the other hand, the clutch float 45 does not descend sufficiently or at all,
If it is not meshed with the inner teeth 49 of the outer shaft 28, the inner tank 40 is not rotated and only the stirring body 50 is rotated. Therefore, the load amount of the motor 13 is small, and the rotation speed from the start of rotation of the motor 13 is increased. The time required to reach the value of R2 is not less than the above, for example, 10 seconds.

Therefore, in step C12, it is judged whether the time required for the rotation speed of the motor 13 to reach the value of R1 from the start of rotation of the motor 13 is 20 seconds or more. The upper and lower positions are determined. In this case, if it is 20 seconds or more, it is determined that the clutch float 45 is correctly in the lower position,
If it is less than [seconds], the clutch float 45 is erroneously determined to be in the upper position.

Other steps C1, C2, C4
~ C11 and C13 to C16 are steps A1, B1 and A.
2, B2, A4 to A11, B4 to B11, A13 to A1
6, B13 to B16, and therefore, the same effect as described above can be obtained.

FIG. 24 shows a fifth embodiment of the present invention. In this case, in the step D5 instead of the steps A5, B5, C5, the motor 13 is switched to the normal 145-180.
Decrease from the washing rotation speed of [rpm] to, for example, 70 to
Rotate at a rotation speed of 100 [rpm], and perform step A1.
4, in step D14 in place of B14, C14, the motor 13 is decelerated from the normal dewatering rotation speed, and the same 70-
The clutch float 45 is rotated at a rotation speed of 100 [rpm], whereby the outer teeth 47 are easily separated from the inner teeth 49 of the outer shaft 28 in step D5, and the outer teeth 47 are moved in step D14. The inner teeth 49 of the outer shaft 28 are easily engaged with each other.

Therefore, even in these cases, when the vertical position of the clutch float 45 during washing and dehydration is inaccurate, the position can be corrected correctly.
In this case, the determinations in steps D3 and D12 are similar to those in steps A3 and A12, but may be similar to steps B3 and B12 or steps C3 and C12, respectively.

Then, these other steps D1 and
D2, D4, D6 to D11, D13, D15, D16
Are steps A1, B1, C1, A2, B2, C2, A
4, B4, C4, A6-A11, B6-B11, C6-
C11, A13, B13, C13, A15, B15, C
15, A16, B16, C16, and so
After all, it is possible to obtain the same effects as the above. In addition, the present invention is not limited to the embodiments described above and shown in the drawings, and may be appropriately modified and implemented without departing from the scope of the invention.

[0093]

The washing machine for combined use of dehydration of the present invention is as described above, and has the following effects. Firstly, a rotary tub and an agitator disposed inside the rotary tub are provided, and the agitator is rotated during washing to wash, and the spin tub is rotated together with the agitator during dewatering for dehydration. In addition, the motor is a drive source for both rotations, and a shaft which is rotated by the motor and has the agitator fixedly attached thereto. The shaft is provided around the shaft and connects the shaft and the rotary tank during normal and dehydration. However, by providing a clutch float that floats in the water accumulated around the shaft during washing and disconnects the connection between the shaft and the rotary tub,
Not only is the structure simple and does not require a high degree of precision in parts, it does not make the laundry easily popped out, which is difficult to take out as in the conventional example, and it also causes abnormal vibration during dehydration. Without
The required power can be switched.

Secondly, the clutch float is designed so as to rotate integrally with the shaft and float along the shaft by engagement of the concave and convex portions provided on the outer peripheral portion of the shaft and the inner peripheral portion of the clutch float. Allows the float and descent of the clutch float along the shaft,
Power can be reliably transmitted from the shaft to the clutch float.

Thirdly, the clutch float is connected and disconnected with the rotary tank by engaging and disengaging the external teeth provided on the clutch float and the internal teeth provided on the rotary tank side. It is possible to reliably transmit and cut off the power from the clutch float to the rotary tank.

Fourthly, by forming the external teeth of the clutch float in a taper shape which is tapered in the direction of the internal teeth on the rotary tank side, it is possible to smoothly switch the transmission / disconnection state of power from the clutch float to the rotary tank. Can be done. Fifth
In addition, since the dimension of the tip circle diameter of the tip of the tapered clutch float external tooth is set to be smaller than the dimension of the root circle diameter of the inlet portion of the rotary tank side internal tooth, It is possible to more smoothly switch between transmission and interruption of the power.

Sixth, since the clutch float is made of foamed plastic, the floating property of the clutch float can be improved. Seventh, since the clutch float has an air chamber, the floating property of the clutch float can be improved similarly to the above.

Eighth, the rotary tank is arranged in the non-rotating tank, the stirring body is arranged in the rotating tank, and the stirring body is rotated at the time of washing to wash, and the rotating tank is stirred at the time of dehydration. When rotating with the body for dehydration, it floats on water during washing and connects the rotating tub to the non-rotating tub, and is equipped with a detent float that cuts off the connection during normal and dehydration, The necessary rotation stop of the rotating tank can be surely performed by the float.

Ninth, the anti-rotation float is provided so as to be floatable by the engagement of the uneven portions provided on the non-rotating tank side and the anti-rotation tank and to be constantly restrained by the non-rotating tank. By connecting and disconnecting the teeth provided on the float and the teeth provided on the rotary tank side with the rotary tank, the rotation tank can be floated and lowered while allowing the floating float to descend. Can be surely stopped and released. Tenth, by providing the anti-rotation float together with the clutch float, the necessary power is switched between washing and dehydration and the rotation tank is stopped.
Both the release and the release can be performed by a float, and the structure can be further simplified.

Eleventh, the rotary tub has a dehydration opening only in the upper part, and when washing, water is stored in a water passage formed from the inside of the rotary tub through the central portion of the bottom to the bottom drain of the external non-rotating tub. In such an arrangement, by disposing the clutch float in the water passage, it is possible to switch the required power between washing and dehydration while saving the amount of water used.

Twelfthly, an output generating means for generating different outputs depending on the vertical position of the clutch float at the time of washing and dehydrating is provided, and the vertical position at the time of washing and dehydrating of the clutch float is provided from the output of this output generating means. By determining and executing the operation, the operation according to the actual vertical position of the clutch float at the time of washing and dehydrating can be performed.

Thirteenth, the output generating means generates an output according to the vertical position of the clutch float at the time of washing and dewatering by the motor drive current of the motor, the applied voltage, and the load amount such as the number of revolutions. By doing so, the difference due to the vertical position of the clutch float at the time of washing and dehydration is clearly shown, and thus the vertical position of the clutch float can be more reliably determined.

Fourteenth, when it is determined that the upper and lower positions of the clutch float at the time of washing and dehydrating are inaccurate, the motor is reversed for a very short period or decelerated. , The position of the clutch float can be corrected correctly.

Fifteenthly, when it is determined that the upper and lower positions of the clutch float at the time of washing and dehydrating are inaccurate, it is necessary to reverse the motor for a very short period of time or to decelerate the motor a plurality of times. By repeating the operation, the position of the clutch float can be corrected more correctly.

Sixteenth, when it is determined that the upper and lower positions of the clutch float during washing and dehydration are inaccurate, an abnormality is notified so that when the clutch float is washed and dehydrated. The user can be more surely notified that the vertical position is incorrect.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a main portion showing a first embodiment of the present invention.

[Fig. 2] Side view of the entire fracture

FIG. 3 is a vertical sectional view of the main part

FIG. 4 is a perspective view of a detent float and a tooth portion of an outer tub.

FIG. 5 is a perspective view of a detent float and a tooth portion of an outer shaft.

FIG. 6 is a perspective view of the inner portion of the clutch float and the outer shaft.

FIG. 7 is a view corresponding to FIG. 1 with a different cross-sectional direction.

FIG. 8 is a view corresponding to FIG. 1 in a washing state.

FIG. 9 is a view corresponding to FIG. 2 of a dehydrating and washing machine of different types.

FIG. 10 is an equivalent view of FIG. 8 showing a different example of the clutch float.

FIG. 11 is a partial equivalent view of FIG. 1 showing a different example of the detent float.

FIG. 12 is a partial equivalent view of FIG. 1 showing different examples of a clutch float and a detent float.

FIG. 13 is a view corresponding to FIG. 3 showing a different example of the motor.

FIG. 14 is a schematic electrical configuration diagram showing a second embodiment of the present invention.

FIG. 15 is a flowchart for explaining the operation.

FIG. 16: Characteristic diagram

FIG. 17 is a view corresponding to FIG. 14 showing a third embodiment of the present invention.

FIG. 18 is a view equivalent to FIG. 15.

FIG. 19 is a view equivalent to FIG.

FIG. 20 is a view corresponding to FIG. 14 showing a fourth embodiment of the present invention.

FIG. 21 is a view corresponding to FIG. 15.

FIG. 22 is a view corresponding to FIG. 16.

FIG. 23 is a view corresponding to FIG. 16.

FIG. 24 is a view corresponding to FIG. 15 showing a fifth embodiment of the present invention.

[Explanation of symbols]

5 is an outer tank (non-rotating tank), 13 is a motor, 24 is a shaft, 28 is an outer shaft, 32 is a non-rotating float, 33 is lower teeth, 34 is upper teeth, 35 and 37 are teeth, 40 is an inner tank ( (Rotary tank), 45 is a clutch float, 46 is an internal tooth, 47 is an external tooth, 48 is an external tooth, 49 is an internal tooth, 50 is an agitator, 58 is a drain port, 59 is a water channel, 64 is a dehydration hole (for dehydration). Opening), 6
8 is a control device (control means), 70 is external teeth, 71 is internal teeth,
72 is a clutch float, 75 is an air chamber, 76 is a non-rotating float, 77 is a clutch float, 78 is an air chamber,
Reference numeral 85 is a current sensor (output generating means), 87 is a buzzer (abnormality alarm), 89 is a voltage sensor (output generating means), 90
Indicates a rotation speed sensor (output generating means).

Claims (21)

[Claims] 1. A rotary tub and an agitator disposed inside the rotator are provided, and the agitator is rotated during washing for washing, and the spin tub is rotated together with the agitator for dewatering during dewatering. In this case, a motor that is a drive source for both rotations, a shaft that is rotated by this motor and that has the agitator fixed to it, is provided around this shaft, and connects the shaft and the rotary tub during normal and dehydration, A washing machine that also serves as a dehydrator, comprising: a clutch float that floats in water accumulated around the shaft and disconnects the shaft from the rotary tub. 2. The clutch float is configured so as to rotate integrally with the shaft and float along the shaft by engagement of an uneven portion provided on an outer peripheral portion of the shaft and an inner peripheral portion of the clutch float. The combined washing machine for dehydration according to claim 1. 3. The clutch float is configured to connect and disconnect with the rotary tub by engaging and disengaging external teeth provided on the clutch float and internal teeth provided on the rotary tub side. The combined washing machine according to claim 1. 4. The washing machine for combined use of dehydration according to claim 3, wherein the outer teeth of the clutch float are formed in a taper shape which is tapered in the direction of the inner teeth on the rotary tub side. 5. The size of the tip circle diameter of the tip part of the clutch float external tooth is set smaller than the size of the root circle diameter of the inlet part of the rotary tank side internal tooth. Washing machine for combined use of dehydration. 6. The washing machine for combined use of dehydration according to claim 1, wherein the clutch float is made of foamed plastic. 7. The washing machine for combined use of dehydration according to claim 1, wherein the clutch float has an air chamber. 8. A rotary tank is provided in a non-rotating tank, and
A stirrer is installed in the rotary tub, and the stirrer is rotated during washing to perform washing, and the rotary tub is rotated together with the stirrer during dewatering to remove water. A washing machine for combined use of dehydration, characterized in that the rotating tub is connected to a non-rotating tub, and a rotation stop float is provided for disconnecting the connection during normal and dehydration. 9. A non-rotating float is provided so that it can be floated by engagement of concave and convex portions provided on the non-rotating tank side and the non-rotating tank and is constantly restrained by the non-rotating tank, and provided in the non-rotating float. 9. The washing machine for dehydration and combined use according to claim 8, wherein the tooth is connected to and detached from the rotary tub by engaging and disengaging the tooth provided on the rotary tub side. 10. A non-rotating tub is provided with a rotating tub, an agitator is provided in the rotating tub, the agitator is rotated at the time of washing for washing, and the rotating tub is provided together with the agitator at the time of dehydration. In a structure that is rotated for dehydration, a motor that is a drive source for both rotations, a shaft that is rotated by this motor and that has the agitator fixed thereto, and a shaft that is provided around this shaft and is used during normal and dehydration And a rotary tub, which floats in the water accumulated around the shaft during washing and disconnects the connection between the shaft and the rotary tub, and a float that floats in the water accumulated around the shaft during washing to prevent the rotary tub from A washing machine for combined use of dehydration, which is connected to a rotary tub and comprises a non-rotating float that disconnects the connection during normal and dehydration. 11. The rotary tub has a dehydration opening only in the upper part, and water is stored in a water passage formed from the inside of the rotary tub through the central portion of the bottom to the bottom drain of an external non-rotating tub during washing. 2. The washing machine for combined use of dehydration according to claim 1, wherein a clutch float is arranged in the water channel of the above-mentioned one. 12. An output generating means for generating different outputs depending on the vertical position of the clutch float at the time of washing and spin-drying, and operating by determining the vertical position of the clutch float at the time of washing and spin-drying from the output of this output generating means. 2. The washing machine for combined use of dehydration according to claim 1, further comprising a control means for performing a control. 13. The washing machine for combined use of dehydration according to claim 12, wherein the output generating means generates an output according to the vertical position of the clutch float at the time of washing and dewatering by the load amount of the motor. 14. The washing machine for combined use of dehydration according to claim 13, wherein the output generating means generates the load amount of the motor by the drive current of the motor. 15. The washing machine for combined use of dehydration according to claim 13, wherein the output generating means generates the load amount of the motor by the voltage applied to the motor. 16. The output generating means generates the load amount of the motor by the number of rotations of the motor.
3. A washing machine that also serves as a dehydrator. 17. The control means performs control for reversing the motor for an extremely short period when it is determined that the vertical position of the clutch float is incorrect during washing and dehydration. Washing machine for both dehydration. 18. The control means performs control for repeating the motor for a very short period of time when the clutch float is determined to be inaccurate in vertical position during washing and dehydration, and the control is repeated a plurality of times. The combined washing machine for dehydration according to claim 17. 19. The dewatering device according to claim 12, wherein the control means controls the motor to decelerate and rotate when it is determined that the vertical position of the clutch float is incorrect during washing and dewatering. Combined washing machine. 20. The control means performs control to repeat decelerating and rotating the motor a plurality of times when it is determined that the vertical position of the clutch float during washing and dehydration is incorrect. Item 21. A combined washing machine for dehydration. 21. The combined use of dehydration according to claim 12, wherein the control means performs control for issuing an abnormality notification when it is determined that the vertical position of the clutch float during washing and during dehydration is incorrect. Washing machine.