JPH04122290A - Washing dryer - Google Patents

Abstract

PURPOSE:To surely drive the rotary part inside a washing dryer with high reliability by installing a clutch mechanism for preventing the reverse drive at least on one output shaft between two motors. CONSTITUTION:Independent mechanical elements are used without using a power transmission mechanism and a clutch mechanism in common. Motors 10 and 20 are fixed in the lower part of an outer tank 3, and the revolution is transmitted to a rotary blade or rotary tank through each power transmission mechanism from the output shafts. When one motor drives, the other motor is driven as power generator, and a clutch mechanism 21 is installel on the output shaft of the motor so that power is not used uselessly. Accordingly, the sure drive can be realized with high reliability, and at the same time, a quiet washing dryer having high efficiency can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a washer/dryer that can process washed and dried items such as clothes from washing to drying.

[Conventional technology]

As described in Japanese Utility Model Application Publication No. 57-140280, a fully automatic washer/dryer is known in which washing and centrifugal dehydration are carried out with the rotating tub vertical, and then drying is carried out with the rotating tub horizontal.

Such a washer/dryer performs the three operations of washing, dehydration, and drying sequentially, and the rotation speed of the rotor blade during washing is 100 to 300 rpm, and the rotation speed of the rotary tank during dehydration is approximately 90Orpm, and.

The rotation speed of the rotary tank during drying is preferably 40 to 60 rρ■. This driving method is not simple because the objects to be rotated and the rotational speeds are different. In the above-mentioned known example, a mechanism is adopted in which gears are attached to two motors fixed to the case, and the gears protruding from the lower part of the outer barrel are engaged with the gears by the rotational movement of the outer barrel.

In other words, the gear as a power transmission mechanism is also used as a clutch mechanism.

[Problem to be solved by the invention]

In the above-mentioned conventional technology, the rotational connection between the motor and the rotary blade or the rotary tank is made by a gear, but one gear of the gear pair moves due to the rotational movement of the outer tank and separates from the other gear.
It has a structure that repeatedly engages. Therefore, there is a lack of reliability that ensures proper engagement.

Another disadvantage is that the relative positional accuracy of the gears is poor, making it impossible to expect good meshing.

An object of the present invention is to improve the method of driving a rotary body, which is a drawback of the prior art, and to realize highly reliable and reliable driving. At the same time, the goal is to create a washer/dryer that is quiet and highly efficient.

[Means to solve the problem]

In order to achieve the above object, an independent mechanical element is used instead of serving as both a power transmission mechanism and a clutch mechanism. Therefore, both motors are fixed to the lower part of the outer tank, and the mechanism is such that the rotation is transmitted from their output shafts to the rotor blades or the rotary tank via the respective power transmission mechanisms. Here, when one motor is working, the other motor is driven as a generator, and a clutch mechanism is provided on the output shaft of the motor so as not to waste power. However, if the rotational speed is sufficiently slow and power consumption is low, the clutch mechanism may be omitted.

Further, it is desirable that the two motors be arranged approximately symmetrically with respect to the rotation axis of the rotary blade or the rotary tank.

[Effect]

During the washing operation, the rotary blades are rotated by the first motor, and the laundry in the rotating tub is rotated together with water to perform the washing operation. At this time, the rotation axis of the rotor blade is oriented almost vertically. If the rotational speed of the first motor is faster than the appropriate rotational speed of the rotary blade, a deceleration mechanism is provided in the middle. Next, during dewatering operation, after water is discarded from a drain provided at the bottom of the outer tank, the rotary tank is rotated by the first motor, and dewatering is performed by centrifugal force. Since the rotational speed at this time is faster than during washing operation, a clutch mechanism is provided to change the transmission path in order to directly rotate the rotating tub without using an intermediate speed reduction mechanism.

Due to the rotation of the rotary tank during the dewatering operation, the second motor, which is not working and is connected to the transmission mechanism, is also turned as a generator. At this time, the rotational speed is high, resulting in a large load on the first motor. Therefore, a clutch provided on the output shaft of the second motor cuts off the rotation and removes this load.

Next, when the washing and dewatering is completed, the rotary tub is turned over with its outer tub, and the rotating shaft of the rotary tub approaches horizontal, and the drying operation begins. This motion is called a rotational motion, and the mechanism that performs this motion is called a rotation mechanism. During drying operation, the rotary tank is rotated by the second motor. At this time, the first motor, which is not working and is connected to the transmission mechanism, is also turned as a generator. This becomes a load on the second motor, and a clutch provided on the output shaft of the first motor cuts off the rotation and removes this load. However, when the rotational speed during drying operation is slow and the load is small, the clutch provided on the output shaft of the first motor can be omitted.

Among the members provided at the bottom of the outer tank, the motor is particularly slow and tends to cause problems in balancing the outer tank, which is usually supported elastically. In the present invention, two motors are arranged on both sides of the center of the outer tank, making it easy to maintain balance. Therefore, generation of vibration and noise can be suppressed.

〔Example〕

A first embodiment of the present invention will be described below with reference to FIG. FIG. 1 shows a state in which washing and dewatering operations are performed with the rotation axis of the outer tub 3 being vertical. A rotary tank 2 is provided inside the outer tank 3, and a large number of dehydration vent holes 2a are opened on the outer periphery of the rotary tank 2. A rotor blade 1 is provided at the bottom of the outer tank 3. The rotating tank 2 and the rotary blade 1 are rotatably supported with respect to the outer tank 3. The outer tank 3 is fixed to the case by a rotating mechanism 4. By the action of the rotating mechanism 4 together with the members fixed thereto, the outer tank 3 can be changed from a state where the axis of rotation shown in FIG. 1 is vertical to a state where the axis of rotation is tilted. Further, the rotation mechanism 4 elastically supports the outer tank 3 and prevents vibrations of the outer tank 3 from being transmitted to the case 5. Case 5
A lid 5a is provided on the top of the lid 5a, and by opening the lid 5a, laundry and drying items can be put in and taken out.

A first motor 10 and a second motor 2 are installed at the bottom of the outer tank 3.
0 is fixed across the central axis of the outer tank 3. When the weights of two motors are significantly different, balance is achieved by moving the lighter motor away from the central axis. The rotor shaft 31 fixed to the rotor blade 1 penetrates through the bottom of the outer tank 3 of the rotor tank 2 and is connected to the output of the planetary gear mechanism 33 . A rotary tank rotation shaft 32 built in a rotor blade rotary shaft 31 is fixed to the lower part of the rotary tank 2, penetrates through the bottom of the outer tank 3, and is fixed to the gear case 34. Two input pulleys 3'5a and 35b are provided at the lower end of the input shaft 36 of the planetary gear mechanism 33. Input shaft 3
6 and gear case 34 are electromagnetic spring clutches 30
connected by. Output pulley 15 of first motor 10
and input pulley 35a are simply connected by V-belt 12. An electromagnetic clutch 21 is provided between the second motor 20 and the output pulley 25. The output pulley 25 and the input pulley 35b are simply connected by the V-belt 22.

Although not shown in FIG. 1, this washer/dryer has a water supply means for supplying water into the interior from the upper part of the outer tank 3.
A drainage means is provided at the bottom to drain away the water inside.

Both have built-in solenoid valves that open and close according to commands from the control device. Further, an electromagnetic brake is provided on the outside of the gear case 34 to prevent the rotating tank 2 from rotating when unnecessary. Also, during high-speed rotation such as dehydration operation, the lid 5
If a is opened, it has the function of stopping suddenly to prevent accidents such as hands getting caught.

Similarly, although not shown in FIG. 1, this washer/dryer is also equipped with hot air generation means for drying operation, a control device that controls the entire automatic operation, and the like.

During washing operation, the first motor 10 rotates and the output pulley 1
5. V-belt 12. The rotary blade 1 is rotated via the input coupler 35a, and the laundry in the rotary tub 2 is rotated together with water to perform a washing operation. At this time.

The spring clutch 30 is disconnected, and the electromagnetic brake stops the gear case 34. Therefore, the rotation is transmitted from the input pulley 35a to the input shaft 36, is decelerated by the planetary gear mechanism 33, and is transmitted to the rotary blade 1. on the other hand,
The electromagnetic clutch 21 disconnects and prevents the second motor 20 from rotating.

Next, the water is discarded by a drainage means provided at the bottom of the outer tank and enters the dewatering operation. The spring clutch 30 connects the input shaft 36 and the gear case 34, and the electromagnetic brake opens the gear case 34. Therefore, from the input pulley 35a to the input shaft 36. The gear case 349, rotating tank 29, and rotor blade 1 rotate together. Since the rotation speed does not go through the planetary gear mechanism 33, the rotation speed is faster than that during the washing operation. Therefore,
Dehydration is achieved by centrifugal force. Similarly to the washing operation, the electromagnetic clutch 21 is disconnected to prevent the second motor 20 from rotating.

Next, by the action of the rotary mechanism 4, the rotary tank 2 is turned over along with the outer tank 3, and the rotation axis of the rotary tank 2 is brought to a horizontal position, and the drying operation is started. During drying operation, the rotary tank is rotated by the second motor 20. The electromagnetic clutch 21 outputs a rotational output.
5, the rotary tub 2 is rotated via the V-belt 22 and the input pulley 35b, and the washed and dried items in the rotary tub 2 are agitated and hot air is applied to perform a drying operation. The spring clutch 30 connects the input shaft 36 and the gear case 34, and the electromagnetic brake opens the gear case 34. Therefore, from the input pulley 35a to the input shaft 36. Gear case 341 rotating tank 2
The two rotary blades 1 rotate as one. Although the rotation does not go through the planetary gear mechanism 22, since the second motor 20 rotates slowly, the rotation speed of the one-rotation tank 2 is appropriate. Further, the first motor 10 is also rotated at the same time, but since the rotation speed is slow, it does not cause a large load and there is no problem.

According to this embodiment, three types of rotational speeds can be achieved using two motors and two clutch mechanisms. Furthermore, the main body of rotation can be switched to either a rotary blade or a rotary tank.

A torque one-way clutch mechanism according to a second embodiment of the present invention will be described below with reference to FIGS. 2 and 3. Second
The figure shows a front sectional view of the clutch, and FIG. 3 shows a front view of the internal structure of the clutch.

The clutch mechanism is built into the clutch case 52,
The input shaft 50 and output shaft 60 protrude.

A small gear 51 is fastened to the input shaft 50 within a clutch case 52. On the other hand, the clutch case 5 is attached to the output shaft 60.
An inner ring 61 is fastened within 2.

The outer cylindrical surface of the inner ring 61 is finished with high precision, and the inner ring 6
A plurality of rollers 63 arranged so as to surround 1 come into contact with each other. The outer side of the roller group 63 is the outer shaft 62 of the annular member! The inner surface of the outer shaft 62 forms a cam curve 66 corresponding to each roller. The gap between the cylindrical surface of the outer tank of the inner ring 61 and the cam curve 66 on the inner surface of the outer shaft 62 is large enough to allow the rollers 63 to move a little, so that the adjacent rollers maintain approximately equal intervals. The outer ring 62 has teeth 6 on its outer periphery.
5 is cut out, and meshes with the small gear 51. roller 63
Both ends are sandwiched between retainers 64 to determine the axial position. Further, the retainer 64 is in contact with both ends of the roller 63 and also in contact with the inner surface 53 of the clutch case 52, so that they can transmit approximately constant frictional force to each other. Additionally, a spring 67 presses the retainer 64 against the inner surface 53 of the clutch case 52 in order to maintain a predetermined frictional force.

The clutch of this embodiment works as follows. When rotation is introduced from the input shaft 50, 1. The Js gear 51 rotates, and the outer shaft 62 that meshes with it is turned. As the outer shaft 62 rotates, the roller 63 is initially rolled slightly and bites into a narrow gap between the cylindrical surface on the outer circumference of the inner ring 61 and the cam curve 66 on the inner surface of the outer shaft 62. Therefore, the outer shaft 62 and the inner ring 61 are integrated and transmit rotation to the output shaft 60. At this time, the retainer 64 is attached to the inner surface 53 of the case or the roller 63.
They are sliding against each other. The above action works in the same way regardless of which direction the input shaft 50 is rotated.

Conversely, when power is applied from the output shaft 60, the roller 63 no longer bites into the gap between the outer periphery of the inner ring 61 and the cam curve @66 of the outer shaft 62.

The roller 63 rotates or slides on the outer circumference of the inner ring 61 and does not transmit force to the outer shaft 62.
Furthermore, since the outer periphery of the inner ring 61 is cylindrical, the roller 63 will not be forced to bite into it, but the retainer 64 suppresses the movement of the roller 63 through frictional force in order to prevent the roller 63 from biting in due to vibrations from other sources. If the action is 0 or more, the input shaft 50
It works the same way no matter which direction you rotate it.

According to this embodiment, it is possible to realize a torque one-way clutch that operates reliably with a simple mechanism and a small number of parts. By incorporating this, it is possible to realize an inexpensive and reliable washer/dryer.

〔Effect of the invention〕

According to the present invention, the rotating parts inside the washer/dryer can be reliably driven with high reliability. Additionally, it is possible to provide a well-balanced, quiet, and highly efficient washer/dryer.

[Brief explanation of drawings]

FIG. 1 is a sectional view of one embodiment of the invention, FIG. 2 is a front view of a second embodiment of the invention, and FIG. 3 is a side view of the second embodiment of the invention. DESCRIPTION OF SYMBOLS 1... Rotating blade, 2... Rotating tank, 2a... Dehydration vent, 3... Outer tank, 4... Rotating mechanism, 5... Case,
5a... Lid, 10... First motor, 12... V belt, 15... Output pulley, 20... Second motor,
21... Electromagnetic clutch, 22... V belt, 25...
・Output pulley, 30...Spring clutch, 31・
...Rotor blade rotation axis, 32...Rotary tank rotation axis, 33...
・Planetary gear mechanism, 34... Gear case, 35a... Input pulley, 35b... Input pulley, 50... Input shaft,
51... Small gear, 52... Clutch case, 53...
・Case inner surface, 60... Output shaft, 61... Inner ring, 6
2... Outer ring, 63... Roller, 64... Retainer, 65... Teeth, 66... Cam curve, 67... Spring.

Claims (1)

[Scope of Claims] 1. A rotary tub for storing washed and dried items, an outer tub for placing the rotating tub inside, and a case for placing the outer tub inside, the rotating tub having a cylindrical shape with a bottom, and An opening for loading and unloading the washed and dried material is formed on the opposite side of the bottom, a large number of dehydration vents are provided around the rotating tank, and the outer tank has a bottomed cylindrical shape with a water reservoir, as well as water supply means and drainage. In the washer and dryer, the washing and drying machine is provided with a rotary blade at the inner bottom of the rotary tub, and a rotary blade and a driving means for rotating the rotary tub at the outer bottom side of the outer tub. Two driving motors are provided at approximately symmetrical positions with respect to the rotation center of the rotary tank, and at least one output shaft of the two motors is provided with a clutch mechanism to prevent reverse drive. Features a washer and dryer.