JPH07227494A - Washing machine, washing operating method and driving device therefor - Google Patents

Abstract

PURPOSE:To surely transmit the revolution of a motor to a washing axis and a dehydrating axis with a simple structure and to improving washing performance by rotating not only rotary blades but also a washing and a dehydrating vessel at the time of a washing process. CONSTITUTION:Concerning the single vessel washing machine provided with a washing and dehydrating vessel 3 inside a water receiving vessel 2 and arranging rotary blades 4 inside the washing and dehydrating vessel 3, at the time of a washing operation, the rotary blades 4 and the washing and dehydrating vessel 3 are rotated. On the other hand, a motor 5 is arranged under the water receiving vessel 2, a lower washing axis 9a is directly connected to the motor 5, a dehydrating axis 10 is linked through a spring clutch mechanism or a disk clutch mechanism to the lower washing axis 9a, the lower washing axis 9a is linked through a decelerating mechanism 12 of a planetary gear to an upper washing axis 9b, the upper washing axis 9b is linked to the rotary blades 4, and the dehydrating axis 10 is coupled to the washing and dehydrating vessel 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fully automatic one-tub type washing machine, a washing operation method thereof and a driving device thereof.

[0002]

2. Description of the Related Art As is well known, fully automatic one-tub type washing machines are
For example, as shown in FIG. 20, a water receiving tub 2 is arranged in an outer box 1, a washing / dehydrating tub 3 is provided in the water receiving tub 2, and a rotary blade 4 such as an agitator is arranged in the washing / dehydrating tub 3. I have set up.

A motor 5 is arranged below the water receiving tank 2, and the drive shaft of the motor 5 is a pulley 6, a V belt 7 and a pulley 8.
Is connected to the washing shaft 9 via the spring clutch mechanism 11 and the dehydration shaft 10 via the spring clutch mechanism 11. The washing shaft 9 is connected to the rotary blades 4 via the planetary gear reduction mechanism 12. Is combined with the washing and dehydrating tub 3.

Then, in the washing process, the washing shaft 9 is rotated at a low speed by the action of the speed reduction mechanism 12 by the planet gears, and the dehydration shaft 10 is rotated.
Is separated from the drive shaft of the motor 5 by a spring clutch mechanism 11 so as not to rotate.

In this case, in the washing machine in which the dehydration shaft 10 and the drive shaft of the motor 5 are switched between engaged and disengaged by the spring clutch mechanism 11, as disclosed in, for example, Japanese Patent Laid-Open No. 63-135197. The spring clutch mechanism 11 has a lock lever that operates in conjunction with it, and this lock lever is engaged with a brake wheel that stops the rotation of the washing / dehydrating tub 3.

Therefore, due to the nature of the planetary gears, when the washing shaft 9 rotates in the washing process, the dehydration shaft 10 also rotates a little along with it, but the lock lever locks with the brake wheel to rotate the washing / dehydrating tub 3. Block.

[0007]

As described above, in the conventional washing machine, only the rotary blades 4 are rotated during the washing process, and the rotation of the washing / dehydrating tub 3 is completely stopped. Was obtained only from the rotation of the rotary blades 4, and sufficient cleaning power could not be obtained. Also, a washing shaft 9 and a dehydration shaft 1
0 is a motor 5 via a pulley, a V-belt, and a pulley 6.
Since it is connected to the drive shaft of No. 3, not only the number of parts is increased, but also the rotation of the motor 5 may not be smoothly transmitted to the washing shaft 9 and the dehydration shaft 10.

The object of the present invention is to solve the above-mentioned disadvantages of the prior art, and to provide a washing machine and a washing operation method thereof in which not only the rotating blade but also the washing / dehydrating tank is rotated during the washing process to improve the washing power. To do. Another object of the present invention is to provide a drive unit for a washing machine, which can simplify the mechanism for rotating the washing shaft and the dehydration shaft and can smoothly transmit the rotation of the motor to the washing shaft and the dehydration shaft.

[0009]

In order to achieve the above object, the present invention firstly provides a washing / dehydrating tub in a water receiving tub, and a rotary wing arranged in the washing / dehydrating tub. In the washing machine of the type, the rotary blade and the washing / dehydrating tub are rotated during a washing operation.

Secondly, the gist is to rotate the rotary blade and the washing / dehydrating tub in opposite directions.

Thirdly, a washing / dehydrating tank is provided in the water receiving tank,
In a one-tank washing machine in which rotary vanes are arranged in the washing / dehydrating tub, a drive shaft of a motor is connected to a washing shaft and a dehydrating shaft is connected via a clutch mechanism, and the washing shaft is a reduction gear mechanism using a planetary gear. The gist is to connect the dewatering shaft to the washing and dewatering tub by connecting to the rotary blade via the.

Fourth, the upper washing shaft connected to the rotary vanes in the washing / dehydrating tub is connected to the lower washing shaft through a speed reduction mechanism using a planetary gear, the lower washing shaft is connected to a motor, and the lower washing shaft is connected to the lower washing shaft. A lower dehydration shaft is coaxially provided, the lower dehydration shaft is connected to the lower wash shaft via a clutch mechanism, and the lower dehydration shaft is connected to the upper dehydration shaft via a brake drum arranged around the planetary gear. In the tub-type washing machine, the washing / dehydrating tub is fixed by fixing the brake drum during the washing operation, and the washing / dehydrating tub is free depending on the characteristics of the planetary gear when the clutch is disengaged without fixing the brake drum. The gist of the invention is to appropriately combine a state in which the rotation is allowed and a mode in which the rotation is possible.

Fifth, the gist is that the mode for fixing the washing / dehydrating tub and the mode for allowing the washing / dehydrating tub to be rotatable can be appropriately switched depending on the laundry content such as the type of laundry.

Sixth, a circulation water channel for pumping up and circulating circulation of washing water in the washing / dehydrating tub is provided outside the tub so that the washing / dehydrating tub is fixed in a rotatable mode. The main point is to perform pump-up in the mode.

Seventh, a washing and dehydrating tank is provided in the water receiving tank,
In the one-tank type washing machine having rotary vanes arranged in the washing / dehydrating tub, a washing motor and a dehydrating motor are separately provided, and a drive shaft of the washing motor is connected to a washing shaft coupled to the rotary vane. The gist of the invention is to connect the drive shaft of the above to a dehydration shaft which is connected to the washing and dehydrating tub.

Eighth, a washing / dehydrating tank is provided in the water receiving tank,
In a one-tub type washing machine in which rotary vanes are arranged in the washing / dehydrating tub, a motor is arranged below the water receiving tub, a lower washing shaft is directly connected to the motor, and a clutch mechanism is connected to the lower washing shaft. The dewatering shaft is connected to the upper washing shaft through the planetary gear reduction mechanism, the upper washing shaft is connected to the rotor blades, and the dewatering shaft is connected to the washing and dewatering tub. To do.

Ninth, the upper washing shaft connected to the rotating blades in the washing / dehydrating tub is coupled to the lower washing shaft through a speed reduction mechanism using a planetary gear, the lower washing shaft is connected to a motor, and the lower washing shaft is connected to the lower washing shaft. A lower dehydration shaft is coaxially provided, the lower dehydration shaft is connected to the lower wash shaft via a clutch mechanism, and the lower dehydration shaft is connected to the upper dehydration shaft via a brake drum arranged around the planetary gear. In a tub-type washing machine, the clutch mechanism has a lower dewatering shaft and a clutch spring integrally wound around the lower dewatering shaft, and a clutch spring wound around the lower dewatering shaft side and a clutch spring wound around the lower washing shaft side. The upper and lower ends of the clutch springs are fixed to separate clutch gear cases that respectively cover and, and the clutch pieces are releasably engaged with the clutch gears provided on the outer circumference of the clutch gear case. It is intended to.

Tenth, in the mode of fixing the washing / dehydrating tub, the upper and lower two clutch pieces are respectively locked to the clutch gears, and at the same time, the brake band is fastened to the brake drum. The freely rotatable mode is to lock the upper and lower two clutch pieces to the clutch gears and at the same time loosen the brake band.

Eleventh, the gist is that the clutch mechanism is a disc clutch composed of a drum and a disc.

Twelfthly, the gist is that the coaxial washing shaft and dewatering shaft are connected in series in the longitudinal direction to a motor arranged below the water receiving tank.

[0021]

According to the first aspect of the present invention, by rotating the rotary blades and the washing / dehydrating tub during the washing operation, two whirlpools are generated inside and outside the washing / dehydrating tub to wash the rice. The cleaning power is improved.

According to the second aspect of the present invention, by rotating the rotary blade and the washing / dehydrating tub in opposite directions during the washing operation, the directions inside and outside the washing / dehydrating tub are different. Two vortexes are generated, and the washing power is improved by washing with a brush.

According to the third aspect of the present invention, when the rotating blades that are reversed in the washing process are loaded by laundry or the like, the dehydration shaft rotates in the direction opposite to the washing shaft due to the nature of the planet gears. . Therefore, by transmitting this rotation to the washing / dehydrating tub, it is possible to reverse the rotary vanes during the washing process and simultaneously rotate the washing / dehydrating tub in the opposite direction.

According to the fourth aspect of the present invention, in the washing step, in addition to the rotation of the rotary blade, a mode in which the washing / dehydrating tub is fixed and a mode in which the washing / dehydrating tub is free and rotatable By appropriately combining and, it is possible to flexibly deal with the laundry content that changes every moment as the process progresses, the wash water fits well to the laundry, the cleaning power is improved, and the clothes are loosened and the cloth entanglement is reduced.

According to the fifth aspect of the present invention, in addition to the above operation, the rotation and fixing of the washing / dehydrating tub can be switched, so that a mode suitable for the type of laundry can be freely selected, and the cloth can be freely selected. A water stream suitable for quality is obtained.

According to the sixth aspect of the present invention, the washing water is further pumped up by the operation in the combination of the mode in which the washing / dehydrating tub is fixed and the mode in which the washing / dehydrating tub is freely rotatable. Since it circulates, the cleaning power is further improved and the tangling of the cloth is further reduced.

According to the seventh aspect of the present invention, in the washing step, by rotating the dehydration motor and the washing motor in opposite directions, the dehydration shaft and the washing shaft connected to the respective motors run in opposite directions. And at the same time flip the rotor blades,
The washing and dewatering tub can be rotated in the opposite direction.

According to the eighth aspect of the present invention, the dewatering shaft is free from the lower washing shaft by the clutch mechanism during the washing operation. Therefore, if the rotation of the lower washing shaft is transmitted to the upper washing shaft via the speed reduction mechanism and the rotary vanes are reversed, the load due to the laundry or the like is applied to the rotary vanes, and at the same time, due to the nature of the planetary gear, the washing and dehydration tub is simultaneously Rotates in the direction opposite to the rotary blades, and as a result, two vortexes are generated inside and outside the washing / dehydrating tub, which results in a washing effect that is like a brush wash.

According to the ninth aspect of the present invention, since the planetary gear is used for the speed reduction mechanism and the spring clutch is used for the clutch mechanism, the mode of rotation and fixing in the free state of the washing / dehydrating tub has a compact and simple structure. Can be made.

According to the tenth aspect of the present invention, the rotation and fixing modes of the washing / dehydrating tub in the free state can be performed by releasing the tightening of the brake band and releasing the engagement of the clutch piece with the clutch gear. The operation is reliable.

According to the eleventh aspect of the present invention, the clutch mechanism is a disc clutch composed of a drum and a disc, so that the dehydration shaft is not locked during the washing operation.

According to the twelfth aspect of the present invention, in addition to the above operation, the coaxial washing shaft and dewatering shaft are connected in series in the longitudinal direction with respect to the motor arranged below the water receiving tank. Parts such as a pulley and a V-belt for transmitting the rotation of the motor to the washing shaft and the dehydration shaft are not required, and the structure is simplified and the rotation of the motor is reliably transmitted to the washing shaft and the dehydration shaft.

[0033]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is an explanatory view showing a first embodiment of a washing machine of the present invention, showing a fully automatic one-tub type washing machine, and the entire basic configuration is the same as the conventional example already described with reference to FIG. The water receiving tank 2 is arranged in the water receiving tank 2 and the washing and dehydrating tank 3 is placed in the water receiving tank 2.
And a rotary vane 4 such as an agitator in the washing and dehydrating tub 3.
To arrange.

A motor 5 is provided below the water receiving tub 2, and a lower portion of a lower washing shaft 9a is directly connected to the motor 5, and the lower washing shaft 9 is
a is a radial main bearing 1 through an oil-impregnated metal seal 17
8. The main bearing 19 supports and the upper part of the lower washing shaft 9a is connected to the sun gear on the high speed side of the speed reduction mechanism 12 using a planetary gear.

Then, the lower part of the upper washing shaft 9b is connected to the low speed side of the speed reducing mechanism 12, and the upper part of the upper washing shaft 9b is connected to the rotor 4.

Further, the dehydration shaft 10 is coupled to the lower washing shaft 9a through the disc clutch mechanism 13. The disc clutch mechanism 13 includes a drum 14 and a disc 15 arranged above the drum 14, and the drum 14 is supported by a radial main bearing 20. Reference numeral 21 in the drawing denotes a bearing cover of the radial main bearing 20.

The dewatering shaft 10 is coaxially provided outside the upper washing shaft 9b via an oil-impregnated metal seal 22, and is supported by a main bearing 24 via a radial main bearing. And
A flange 25 connected to the lower part of the dehydration shaft 10 is connected to the disk 15 of the disk clutch mechanism 13, and an operating member 26 attached to the lower part of the drum 14 as shown in FIG. It is connected to a torque motor 16 for meshing with.

The shapes of the drum 14 and the disk 15 of the disk clutch mechanism 13 are, as shown in FIG. 5, radial waveforms 1 on the mating surfaces of the drum 14 and the disk 15, respectively.
4a and 15a are formed, or a flat plate shape as shown in FIG. 6 is formed, or a diametrical ridge 14b is provided on the drum 14 side as shown in FIG.
Various shapes are conceivable such as forming a groove and forming a groove in the orthogonal direction on the disk 15 side.

As described above, during the washing process, the drum 14 and the disc 15 of the disc clutch mechanism 13 are separated from each other, and the dehydration shaft 10 is kept free so that the rotation of the motor 5 is not transmitted. By rotating in reverse, the lower washing shaft 9a is reversed. In this case, the rotation of the lower washing shaft 9a is reduced by the speed reduction mechanism 12 using the planet gears and transmitted to the upper washing shaft 9b, which reverses at a low speed and the rotary blades 4 slowly reverse.

During the washing process, when the laundry in the washing / dehydrating tub 3 is entangled with the rotary blades 4 and the load is applied to the rotary blades 4, the upper washing is free due to the nature of the planetary gears. The spin-drying shaft 10, which is coaxial with the shaft 9b, that is, the washing and spin-drying tub 3 rotates in the direction opposite to the rotating direction of the rotor 4.

As a result, in the washing / dehydrating tub 3, a swirl flow due to the rotary blades 4 is generated inside, and another vortex in the opposite direction is generated outside due to the rotation of the washing / dehydrating tub 3, so that the laundry is washed like a scrubbing. Then, as shown in the graph of the cleaning ability of FIG. 10, the cleaning power is increased when both the rotary blade 4 and the washing / dehydrating tank 3 are rotated.

When the laundry is taken out from the washing / dehydrating tub 3 after washing, the washing / dehydrating tub 3 is not locked and is free as in the conventional case. You can freely rotate to change the direction to take out the laundry easily.

In the dewatering step, the operating member 26 is pulled up by the torque motor 16, the drum 14 is engaged with the disc 15, and the rotation of the lower washing shaft 9a is transmitted to the dewatering shaft 10 via the disc clutch mechanism 13. Further, the lower washing shaft 9a and the upper washing shaft 9b are directly connected to each other, and the upper and lower washing shafts 9a and 9b and the spin-drying shaft 10 rotate at high speed in one direction.

FIG. 8 shows a second embodiment of the washing machine. The washing motor 28 and the dewatering motor 2 are provided as a structure for rotating the rotor 4 and the washing / dehydrating tub 3 in opposite directions during the washing process.
7 and 7 are separately disposed below the water receiving tub 2, and as shown in FIG. 9, the drive shaft of the washing motor 28 is connected to the washing shaft 9 via the pulley 31, the V belt 32, and the pulley 33, and the dehydration motor The drive shaft 27 was connected to the dehydration shaft 10 via a pulley 34, a V belt 35, and a pulley 36.

Then, the washing shaft 9 is connected to the rotary vanes 4 via the speed reduction mechanism 30, and the dehydration shaft 1 is connected to the washing shaft 9 via the clutch mechanism 29.

Thus, in the washing process, the washing motor 28 and the dehydration motor 27 are rotated in opposite directions,
This rotational force is transmitted to the washing shaft 9 and the dehydration shaft 10, and the rotating blade 4
And the washing and dehydrating tub 3 are rotated in opposite directions.

11 to 15 show a third embodiment, in which a pulsator as a rotary blade 4 is provided in the washing / dehydrating tub 3, and is circulated between the bottom and the upper part of the washing / dehydrating tub 3 below the pulsator 4. The water channel 40 is formed, and the discharge port 41 at the upper portion of the circulation water channel 40 is opened at a position below the balancer 42. The circulating water channel 40 is formed by swelling the washing / dehydrating tank 3 into the tank, and a baffle 43 is integrally provided on the surface of the circulating water channel 40 on the tank side so as to project.

Further, the motor 5 disposed below the water receiving tank 2
Is connected to a drum 44 fixed to a lower washing shaft 9a via a pulley 6, a V-belt, and a pulley 8 on the rotating shaft of, and the upper portion of the lower washing shaft 9a is coupled to an upper washing shaft 9b via a speed reduction mechanism 12 using a planetary gear. The upper washing shaft 9b and the rotary blade 4
Directly connected to.

The speed reduction mechanism 12 connects the lower washing shaft 9a directly to the high speed sun gear, and directly connects the upper washing shaft 9b to the revolution shaft of the planetary gear meshing with the sun gear.
This revolution shaft is on the low speed side, and an outer ring gear is further provided outside the planetary gear.

Further, a lower dewatering shaft 46a is assembled coaxially with the lower washing shaft 9a via a metal seal 45. The lower dehydration shaft 46a is supported by a lower main bearing 48 via a bearing 47, and is coupled to the upper dehydration shaft 46b via a brake drum 39 having the outer ring gear inside.

The upper dewatering shaft 46b has a metal seal 50.
Via a bearing 51 and is supported by an upper main bearing 49 via a bearing 51. Reference numeral 52 in the drawing denotes a damper seal for sealing between the upper dehydration shaft 46b and the upper main bearing 49.

In the washing machine having such a structure, as the clutch device, the clutch spring 53 is integrally wound around the lower spin-drying shaft 46a and the lower wash-shaft 9a protruding downward, and is wound around the lower spin-drying shaft 46a. The clutch spring 53 and the clutch spring 53 wound around the lower washing shaft side 9a are covered in upper and lower two stages by separate upper clutch gear case 54 and lower clutch gear case 55, respectively.

The upper and lower clutch gear cases 54,
Clutch gears 56 and 57 are provided on the outer periphery of 55,
The clutch spring 53 is provided on the inner wall of the upper clutch gear case 54.
Is fixed to the inner wall of the lower clutch gear case 55, and the lower end of the clutch spring 53 is fixed to the upper and lower clutch gears 56 and 57, respectively.
9 is engaged and disengaged.

In this case, the directions of the gears are determined so that the clutch pieces 58, 59 are engaged with the clutch gears 56, 57 in opposite directions. In the embodiment shown in FIG. 13, the clutch piece 58 is set so as to prevent the clutch gear 56 from rotating rightward in FIG. 13, and the clutch piece 59 is set so as to prevent the clutch gear 57 from rotating leftward. is there.

The clutch pieces 58, 59 are rotatably attached to the tip of a U-shaped arm 60 by a spring 61, and one end of the U-shaped arm 60 is integrally provided with a lower end of an oblique arm 62, A mounting piece 63 integrally protruding from the upper end of the diagonal arm 62 is rotatably attached to the flange portion of the lower main bearing 48. In this case, the mounting piece 63
The spring 65 constantly biases the clutch pieces 58, 59 in such a direction as to engage the clutch gears 56, 57.

On the other hand, a wire 67 is attached to the actuator 66.
The tip end of the lever 64 connected by the above is rotatably attached to the flange portion of the lower main bearing 48, and both ends of the brake band 68 wound around the outer periphery of the brake drum 39 are connected to the lever 64.
Fixed near the shaft attachment part.

In this case, the lever 64 is normally urged by the spring 69 in the direction in which the brake band 68 is tightened.

Further, when the lever 64 is moved by the operation of the actuator 66, a bolt-shaped rod-like member 70 as a contact member for rotating the mounting piece 63 is attached at a position where the lever 64 can press. It is provided integrally with.

Further, the drain valve 3 is provided at the other end of the lever 64.
A pulling member 38 for pulling up 7 is attached.

Next, the operation method will be described. In the washing process, the mode of fixing the washing / dehydrating tub by fixing the brake drum and the mode of freely rotating the washing / dehydrating tub without fixing the brake drum are appropriately combined. The actuator 6 is used to set the dehydration tank 3 in a free state so that the dehydration tank 3 can rotate freely.
When the power supply to 6 is turned off, the lever 64
Is in the position shown in the figure by the elasticity of the spring 69, the brake band 68 wound around the brake drum 39 is in the tightened state, and the mounting piece 63 is also in the position shown in the figure by the elasticity of the spring 65. The two clutch pieces 58 and 59 at the tips are engaged with the clutch gears 56 and 57, respectively.

As a result, the clutch gears 56 and 57 are rotated in the opposite directions, and the clutch gear cases 54 and 57 are rotated.
The clutch spring 53 whose upper and lower ends are fixed to 55 is spread out, and the tightening force of the clutch spring 53 is not applied to the lower washing shaft 9a and the lower dehydrating shaft 46a.

Therefore, when the motor 50 is energized, its rotational force is transmitted through the pulley 8 and the drum 44 to the lower washing shaft 9a.
Is transmitted to the lower dehydration shaft 46a. Then, the high speed rotation of the lower washing shaft 9a is transmitted to the upper washing shaft 9b after being decelerated to the upper washing shaft 9b through the speed reduction mechanism 12 by the planet gears.
The rotary blade 4 rotates at a low speed.

At this time, the rotary blades 4 alternately rotate in opposite directions, but since both ends of the clutch spring 53 are fixed to the clutch gear cases 55 and 56, the lower washing shaft 9a rotates in either the left or right direction. However, the clutch spring 53 is not fastened to the lower washing shaft 9a, and the rotary blade 4 is smoothly inverted.

Further, in this state, due to the characteristics of the planetary gear,
Although the upper and lower dehydration shafts 46a and 46b coupled to the brake drum 39 having the outer ring gear try to rotate in the direction opposite to the rotary blades 4 by the reaction force, a brake band 68 is formed on the outer periphery of the brake drum 39. Since it is in the tightened state, rotation of the dehydration shafts 46a and 46b is prevented, and the washing / dehydrating tub 3 does not rotate and is in a fixed state.

Since the washing / dehydrating tub 3 is fixed in the power-off mode to the actuator 66 as described above, the washing / dehydrating tub 3 can be operated even if there is a power failure or the electric system fails. The fixation is retained and therefore safe.

When the actuator 66 is energized from the above-described mode, the wire 67 is slightly pulled up in the direction of the arrow in FIG. 13, and the lever 64 rotates leftward about the shaft-attached portion by the spring 69. As a result, the brake band 68 is loosened, and the washing / dehydrating tub 3 is in a free rotation mode.

In this rotatable mode, the rotational force of the outer ring gear in the opposite direction due to the reaction force of the rotation of the planetary gears is transmitted to the dehydration shafts 46a and 46b, and the washing / dehydrating tub 3 is rotated to the rotor blades 4. Tries to rotate in the opposite direction. In this case, a force for rotating the washing / dehydrating tub 3 is simultaneously generated in the washing / dehydrating tub 3 by the movement of the laundry (load) caused by the rotation of the rotary blades 4. Therefore, the movement of the washing / dehydrating tub 3 is determined by the combined force of the rotational force due to the reaction force of the planet gears and the rotational force opposite to this due to the laundry, but in reality, the reaction force of the planet gears. Since the rotational force due to is much larger than the rotational force due to the laundry, the washing / dehydrating tub 3 rotates in the direction opposite to the rotating blades 4.

The rotating state of the washing / dehydrating tub 3 differs depending on the inertia of the rotating part of the washing / dehydrating tub 3 and the like, the resistance of the rotating part, and the resistance received by the washing / dehydrating tub 3 from cloth or water.
The rotating state of the rotary blade 4 also differs depending on the inertia around the pulsator axis of the rotary blade 4 and the like and the resistance received from the cloth or water, but the rotating state of both is uniquely determined as shown in FIG.

In FIG. 16, when the value showing the magnitude of the number of rotations of the washing / dehydrating tub 3 is taken as the differential ratio, for example, when the load amount is B, the differential ratio is about 13%, and the average rotation of the rotor blades 4 is Number about 1
The rotation speed of the washing / dehydrating tub 3 is 20 rpm, and the rotation speed of the washing / dehydrating tub 3 increases as the rotation speed of the rotary blades 4 decreases.

FIG. 17 shows the relationship between the rotational speed characteristics and the differential ratio of the motor 5, the rotor 4, and the washing / dehydrating tub 3 in the actual load amount. In the rotational drive of 3, the rotary blades 4 and the washing / dehydrating tank 3
Rotational states of the rotor 4 and the washing / dehydrating tub 3 are automatically determined according to the load condition applied to the. That is, the movement of both is determined under the natural load with the lightest load by the principle of energy minimization of the physical laws of the natural world. In this state, the mechanism is not overloaded and the load on the motor 5 is reduced.

In the present invention, in the mode in which the washing / dehydrating tub 3 is rotatable, the on / off time and the rotation angle of the energization of the motor 5 are controlled so that the tub rotation angle is constant, and the washing / dewatering tub 3 is rotated. A reduction in the rotational force of the rotary blades 4, that is, a reduction in the cleaning force due to the excessive rotation of the water tank 3 was prevented, and an appropriate rotational state was obtained.

The fixed mode of the washing / dehydrating tub 3 and the freely rotatable mode of the tub free are properly combined in the washing process. The process diagram of FIG. 18 shows an example of the washing process,
First, throughout the entire process, the washing water in the washing / dehydrating tub 3 is pumped into the circulating water channel 40 by the rotating force of the rotary blades 4,
Pump-up for discharging again from the upper discharge port 41 into the tank is performed. In this case, a lint filter (not shown) is attached to the discharge port 41.

Then, in the first step of the washing process, that is, the soaking and the detergent melting, the washing / dehydrating tub 3 is set to the free state. In this state, the washing / dehydrating tub 3 has the rotor blades 4
Since the laundry slowly rotates in the opposite direction, the laundry floating on the water surface is agitated by the baffle 43 so that the laundry is quickly absorbed in the water and the laundry can be effectively started.

Generally, the detergent is sprinkled on the laundry to start the washing, but when the washing / dehydrating tub 3 is in a free state, the laundry quickly fits in the water as described above. The above detergent is quickly submerged in water, stirred, and melts quickly. Further, the detergent spilled between the washing / dehydrating tub 3 and the water receiving tub 2 is also melted because the water between the washing / dehydrating tub 3 and the water receiving tub 2 is agitated by the rotation of the washing / dehydrating tub 3. It will be easier.

In the first half of the next stain removal, the tub is left as it is, and the laundry is uniformly stirred by the baffle 43 of the washing / dehydrating tub 3 and the rotary blades 4 so that the washing is less uneven. At this time, the laundry near the rotary blades 4 moves in the same direction as the rotating direction of the rotary blades 4 by the rotation of the rotary blades 4, but rotates in the opposite direction by the centrifugal force generated by the movement, thereby washing and dehydrating tub 3 Shaken towards the inner wall of the. As a result, the laundry comes into contact with the inner wall of the washing / dehydrating tub 3, and the dirt is effectively removed by rubbing on the surface.

Since the laundry above the washing / dehydrating tub 3 which is less affected by the rotation from the rotary blades 4 is swung in the direction opposite to the rotation of the rotary blades 4 by the rotation of the tub, the laundry is vertically moved. The twisting of the fibers gives a rubbing effect to the fibers, so that dirt can be removed efficiently.

The rotation angle of the washing / dehydrating tub 3 is once 3
Within 60 degrees, the laundry is twisted up and down moderately, and stains can be removed efficiently. On the contrary,
If the rotation angle becomes larger than this, the laundry tends to gather in the center. Further, when the differential ratio becomes large, the rotation speed (speed) of the washing and dewatering tub 3 becomes large, and conversely, when the rotation speed of the rotary blades 4 becomes low, the rotation angle of the washing and dewatering tub 3 inevitably becomes large. The same tendency as above occurs, and the efficiency of soil removal becomes poor.

FIG. 19 is a characteristic curve diagram showing the relationship between the stain removal efficiency, wash unevenness, and cloth entanglement. As a result of the experiment, the stain removal efficiency, wash unevenness, and cloth entanglement values differ depending on the value of the differential ratio. It turns out that there is an optimum range. That is, if the differential ratio is about 30% or less, the dirt removal efficiency is good,
Highly-quality washing can be obtained with less uneven washing and less tangling of the cloth.

Next, with respect to the contents around the cloth, the pulsator 4 is operated at a large rotation angle in the tank fixing mode. In this state, while the pulsator 4 tries to rotate the laundry largely from below, the baffle 43 acts as a resistance against this movement, so that the vertical rotation of the laundry is promoted and unevenness in washing is reduced.

In the second half of the subsequent dirt removal, the tank is initially set in the mode of fixing the tank to make the water flow slightly stronger than when the tank is free, and the persistent dirt is washed off. After that, as a tub free, the washing / dehydrating tub 3 and the rotating blades 4 are rotated in opposite directions, the laundry is evenly stirred, and the laundry is washed while loosening the entanglement of the laundry which is likely to be caused by stain removal around the cloth or fixing the tub.

Then, in the final loosening, the rotor 4 is operated at a small rotation angle in the tank fixed mode. As a result, the laundry is finely and vigorously stirred, and the entangled laundry is sufficiently loosened.

The combination of the tank fixing and the tank free is set in advance and automatically controls ON / OFF of energization to the actuator 66, but the present invention is not limited to this and other combinations are also possible. Further, the user can arbitrarily set the tank fixing mode and the tank free mode by the washing switch depending on the cloth quality and the degree of dirt of the laundry.

For example, for laundry such as wool, a soft water flow can be obtained by setting the tank-free mode, and for heavy and heavily soiled laundry such as jeans, a strong water flow can be obtained by setting the tank-fixing mode. To be

During the washing process, in addition to the above contents,
A lint removal process can also be provided. This is because water is supplied to a level one level higher than the appropriate set water level, the amount of water is increased, and the rotation angle of the rotor blades 4 is rotated by a small one of 360 degrees or less to loosen the clothes and attach them to the clothes. Makes lint removed from clothing easily.

In the dehydration process, the lever 64 is further moved to the spring 6
When pulled upward in FIG. 13 against the resilience of the rod 9, its side portion comes into contact with the tip of the rod member 70 and presses it. As a result, the attachment piece 63 integrally provided with the rod-shaped member 70 rotates leftward in the figure against the elastic force of the spring 65, and the arm 60 integrated with this also rotates leftward to move the tip end. The clutch pieces 58 and 59 are disengaged from the clutch gears 56 and 57 while being rotated by the elastic force of the spring 61.

As a result, the clutch spring 53 is in a free state and is wound tightly around the lower washing shaft 9a and the lower dehydrating shaft 46a, so that the lower washing shaft 9a is rotated.
6a, and at the same time, the lower washing shaft 9a and the upper washing shaft 9b are directly connected to each other, so that the rotary blade 4 and the washing / dehydrating tub 3 simultaneously rotate at high speed.

At this time, the lever 64 is moved to the position shown in FIG.
By rotating in the upper left direction in 3, the pulling member 38 having one end locked to the lever 64 is pulled upward at the same time, and the drain valve 37 at the lower end is removed from the drain port and drained.

When there is a rinse step after the dehydration step, the tank is operated in a tank-free mode after completion of the dehydration step. As a result, the laundry clinging to the inner wall of the washing / dehydrating tub 3 due to centrifugal force during dewatering is likely to be peeled off, and is easily unraveled in the next rinsing step, and the rinsing performance is improved.

If the washing / dehydrating tub 3 is rotated in small steps or water is supplied at the same time in this process, the clinging of the laundry becomes easier to peel off and the rinsing performance is further improved because the laundry quickly hits the water.

In addition, by setting the tank fixing mode and the tank free mode freely in combination, efficiently removing dirt and rinsing, a course completed in a shorter time than the normally set laundry course menu Can be freely set, which is effective, for example, when washing is done quickly in a short time before going out.

Further, when the laundry is washed in a tank-free state and the lid is opened while the washing / dehydrating tank 3 is rotating,
If the electricity to the actuator 66 is turned off in conjunction with the opening of the lid so that the mode is automatically switched to the tank fixing mode, it is safe because the washing / dehydrating tank 3 is fixed when the lid is opened. .

[0092]

As described above, the washing machine, the method of operating the washing machine, and the driving apparatus of the present invention, firstly, rotate the rotary blades and the washing / dehydrating tub during the washing operation, so that the inside of the washing / dehydrating tub is Two swirl flows are generated inside and outside of the water, and the cleaning power is improved by washing like a brush.

Secondly, by rotating the rotor blades and the washing / dehydrating tub in opposite directions during the washing operation, two vortexes having different directions are generated inside and outside the washing / dehydrating tub,
The washing power is improved like a brush wash.

Thirdly, in the washing process, when a load is applied to the rotating blades which are reversed by the laundry or the like, the dehydration shaft rotates in the direction opposite to the washing shaft due to the nature of the planetary gears. Therefore, by transmitting this rotation to the washing / dehydrating tub, it is possible to reverse the rotary vanes during the washing process and simultaneously rotate the washing / dehydrating tub in the opposite direction.

Fourthly, in the washing step, in addition to the rotation of the rotary blade, a mode in which the washing / dehydrating tub is fixed and a mode in which the washing / dehydrating tub is free and rotatable are appropriately combined, You can flexibly deal with the laundry contents that change from moment to moment as the process progresses, and the wash water fits well to the laundry.
The cleaning power is improved, and the clothes are loosened and the cloth is not tangled.

Fifth, since the rotation and fixing of the washing / dehydrating tub can be switched, a mode suitable for the type of laundry can be freely selected, and a water flow suitable for the cloth quality can be obtained.

Sixthly, the washing water is circulated by further pumping up in a combination of a mode in which the washing / dehydrating tub is fixed and a mode in which the washing / dehydrating tub is free and rotatable, so that the washing power is increased. Further increase, and further reduce the entanglement of the cloth.

Seventh, in the washing step, by rotating the dehydration motor and the washing motor in opposite directions, the dehydration shaft and the washing shaft connected to the respective motors rotate in opposite directions, and the rotary vanes are rotated. At the same time as turning over, the washing / dehydrating tub can be rotated in the opposite direction.

Eighth, during the washing operation, the dehydration shaft is free from the lower washing shaft by the clutch mechanism.
Therefore, if the rotation of the lower washing shaft is transmitted to the upper washing shaft via the speed reduction mechanism and the rotary vanes are reversed, the load due to the laundry or the like is applied to the rotary vanes, and at the same time, due to the nature of the planetary gear, the washing and dehydration tub is simultaneously Rotates in the direction opposite to the rotary blades, and as a result, two vortexes are generated inside and outside the washing / dehydrating tub, which results in a washing effect that is like a brush wash.

Ninth, since the planetary gear is used for the speed reduction mechanism and the spring clutch is used for the clutch mechanism, the mode of rotation and fixation by the free state of the washing / dehydrating tub can be created with a compact and simple structure.

Tenth, the rotation and fixing modes of the washing / dehydrating tub in the free state can be performed by releasing the tightening of the brake band and releasing the engagement of the clutch piece with the clutch gear, so that the operation is reliable.

Eleventh, the clutch mechanism is a disc clutch composed of a drum and a disc, so that the dehydration shaft is not locked during the washing operation.

Twelfth, the coaxial washing shaft and dewatering shaft are connected in series in the longitudinal direction to a motor disposed below the water receiving tank, so that the rotation of the motor is transmitted to the washing shaft and the dewatering shaft. Parts such as pulleys and V belts for
The structure is simplified and the rotation of the motor is reliably transmitted to the washing shaft and the dehydration shaft.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a first embodiment of a washing machine of the present invention.

FIG. 2 is a vertical cross-sectional side view showing a main part of a drive unit for a washing machine according to the present invention.

FIG. 3 is an exploded perspective view showing a main part of a driving device for a washing machine according to the present invention.

FIG. 4 is a perspective view showing a main part of a driving device for a washing machine according to the present invention.

FIG. 5 is an exploded perspective view showing an example of a disk clutch that is a main part of the drive device for the washing machine of the present invention.

FIG. 6 is an exploded perspective view showing another example of a disc clutch that is a main part of the drive device for the washing machine of the present invention.

FIG. 7 is an exploded perspective view showing still another example of the disc clutch which is a main part of the drive device for the washing machine of the present invention.

FIG. 8 is an explanatory view showing a second embodiment of the washing machine of the present invention.

FIG. 9 is a vertical sectional side view showing a main part of a second embodiment of the washing machine of the present invention.

FIG. 10 is a graph showing the cleaning ability according to the cleaning method of the present invention.

FIG. 11 is an explanatory view showing a third embodiment of the washing machine of the present invention.

FIG. 12 is a vertical sectional front view showing a third embodiment of the clutch device for the washing machine of the present invention.

FIG. 13 is a bottom view showing a third embodiment of the clutch device for the washing machine according to the present invention.

FIG. 14 is a partially cutaway side view showing a third embodiment of the clutch device for the washing machine of the present invention.

FIG. 15 is an exploded perspective view showing a third embodiment of the clutch device for the washing machine of the present invention.

FIG. 16 is a characteristic curve diagram showing the differential ratio according to the operating method of the third embodiment of the washing machine of the present invention.

FIG. 17 is a characteristic curve diagram showing a relationship between a rotation speed characteristic and a differential ratio of a motor, a rotor, and a washing / dehydrating tub according to an operating method of a washing machine according to a third embodiment of the present invention.

FIG. 18 is a washing process diagram according to the operating method of the third embodiment of the washing machine of the present invention.

FIG. 19 is a characteristic curve diagram showing the relationship between dirt removal efficiency, washing unevenness, cloth entanglement, and differential ratio according to the operating method of the third embodiment of the washing machine of the present invention.

FIG. 20 is an explanatory diagram of a conventional washing machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Outer box 2 ... Water receiving tank 3 ... Washing / dehydrating tank 4 ... Rotating blade 5 ... Motor 6 ... Pulley 7 ... V belt 8 ... Pulley 9 ... Washing shaft 9a ... Lower washing shaft 9b ... Upper washing shaft 10 ... Dehydrating shaft 11 ... Spring clutch mechanism 12 ... Reduction mechanism 13 ... Disc clutch mechanism 14 ... Drum 14a ... Waveform 14b ... Convex line 15 ... Disc 15a ... Waveform 15b ... Groove line 16 ... Torque motor 17 ... Oil-impregnated metal seal 18 ... Radial bearing 19 ... Main bearing 20 ... Radial bearing 21 ... Bearing cover 22 ... Oil-containing metal seal 23 ... Radial bearing 24 ... Ball bearing 25 ... Flange 26 ... Operating member 27 ... Spinning motor 28 ... Washing motor 29 ... Clutch mechanism 30 ... Reduction mechanism 31 ... Pulley 32 ... V Belt 33 ... Pulley 34 ... Pulley 35 ... V Belt 36 ... Pulley 37 ... Drain valve 38 ... Pulling member 39 ... Brake drum 40 ... Circulating water channel 41 ... Discharge port 42 ... Balancer 43 ... Baffle 44 ... Drum 45 ... Metal seal 46a ... Lower dehydration shaft 46b ... Upper dehydration shaft 47 ... Bearing 48 ... Lower part Main bearing 49 ... Upper main bearing 50 ... Metal seal 51 ... Bearing 52 ... Damper seal 53 ... Clutch spring 54 ... Clutch gear case 55 ... Clutch gear case 56 ... Clutch gear 57 ... Clutch gear 58 ... Clutch piece 59 ... Clutch piece 60 ... Arm 61 ... Spring 62 ... Oblique arm 63 ... Mounting piece 64 ... Lever 65 ... Spring 66 ... Actuator 67 ... Wire 68 ... Brake band 69 ... Spring 70 ... Rod-shaped member

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinsuke Ise 2-14-40 Ofuna, Kamakura-shi, Kanagawa Residential Environment Research and Development Center, Mitsubishi Electric Corporation (72) Masaji Kukino 2-chome, Ofuna, Kamakura, Kanagawa No. 14-40 Mitsubishi Electric Corporation Living Environment Research and Development Center (72) Inventor Yoshio Yoshida 2-14-40 Ofuna, Kamakura City, Kanagawa Prefecture Mitsubishi Electric Corporation Living Environment Research and Development Center (72) Inventor Norihiko Ishikawa Chiba 1-1-1, Yamate, Funabashi-shi, Japan Inside the Funabashi Plant, Nippon Steel Co., Ltd. (72) Inventor Taketsugu Sugino 1-1-1, Yamate, Funabashi City, Chiba Prefecture In-house Funabashi Plant, Japan Co., Ltd. (72) Saito Take 1-1, Yamate, Funabashi City, Chiba Prefecture

Claims (12)

[Claims] 1. A one-tub washing machine in which a washing / dehydrating tub is provided in a water receiving tub, and rotary vanes are arranged in the washing / dehydrating tub,
A washing operation method for a washing machine, comprising rotating a rotary blade and a washing / dehydrating tub during a washing operation. 2. The washing operation method for a washing machine according to claim 1, wherein the rotary blade and the washing / dehydrating tub are rotated in directions opposite to each other. 3. A one-tub type washing machine in which a washing / dehydrating tub is provided in a water receiving tub and rotary vanes are arranged in the washing / dehydrating tub,
To connect the motor drive shaft to the washing shaft and to the dehydration shaft via the clutch mechanism, to connect the washing shaft to the rotating blades via the planetary gear reduction mechanism, and to connect the dehydration shaft to the washing and dehydrating tub. A washing machine characterized by. 4. An upper washing shaft connected to a rotary blade in a washing / dehydrating tub is connected to a lower washing shaft via a speed reduction mechanism using a planetary gear, the lower washing shaft is connected to a motor, and the lower washing shaft is coaxial with the lower washing shaft. A lower spin-drying shaft is provided on the lower spin-drying shaft, the lower spin-drying shaft is connected to the lower wash-shaft via a clutch mechanism, and the lower spin-drying shaft is connected to the upper spin-drying shaft via a brake drum arranged around the planetary gear. In the washing machine, the mode in which the washing / dehydrating tub is fixed by fixing the brake drum during the washing operation, and the state in which the washing / dehydrating tub is free depending on the characteristics of the planetary gear with the clutch disengaged without fixing the brake drum A washing operation method for a washing machine, which is characterized by appropriately combining with a mode that allows rotation. 5. The mode for fixing the washing / dehydrating tub and the mode for allowing the washing / dehydrating tub to be rotatable can be appropriately switched according to the laundry content such as the type of laundry.
How to wash the washing machine as described. 6. A mode for fixing the washing / dehydrating tub and a mode for freely rotating the washing / dehydrating tub, wherein a circulation water channel for pumping up and circulating circulation of washing water in the washing / dehydrating tub is provided outside the tub. The washing operation method of the washing machine according to claim 4 or 5, wherein pumping up is performed at times. 7. A one-tub type washing machine in which a washing / dehydrating tub is provided in a water receiving tub and rotary vanes are arranged in the washing / dehydrating tub,
A washing motor and a dehydration motor are separately provided, and a drive shaft of the washing motor is connected to a washing shaft that is coupled to a rotary blade, and a drive shaft of the dehydration motor is coupled to a dehydration shaft that is coupled to a washing / dehydrating tub. Washing machine to do. 8. A one-tub type washing machine in which a washing / dehydrating tub is provided in a water receiving tub, and rotary vanes are arranged in the washing / dehydrating tub,
A motor is arranged below the water receiving tank, a lower washing shaft is directly connected to the motor, a dehydration shaft is connected to the lower washing shaft through a clutch mechanism, and a lower washing shaft is connected through a speed reduction mechanism using a planetary gear to the upper portion. Connect to the washing shaft, connect the upper washing shaft to the rotor,
A drive unit for a washing machine, characterized in that a dehydration shaft is connected to a washing and dehydrating tub. 9. An upper washing shaft connected to a rotary blade in a washing / dehydrating tub is coupled to a lower washing shaft through a speed reduction mechanism using a planetary gear, the lower washing shaft is connected to a motor, and coaxially with the lower washing shaft. A lower spin-drying shaft is provided on the lower spin-drying shaft, the lower spin-drying shaft is connected to the lower wash-shaft via a clutch mechanism, and the lower spin-drying shaft is connected to the upper spin-drying shaft via a brake drum arranged around the planetary gear. In a washing machine, the clutch mechanism integrally winds a lower dewatering shaft and a clutch spring around the lower washing shaft, and a clutch spring wound around the lower dewatering shaft side and a clutch spring wound around the lower washing shaft side. The upper and lower ends of the clutch spring are fixed to separate clutch gear cases that respectively cover them, and the clutch pieces are releasably engaged with the clutch gears provided on the outer circumference of the clutch gear case. Drive for rinsing machine. 10. A mode for fixing a washing and dehydrating tub is such that two upper and lower clutch pieces are respectively locked to a clutch gear and at the same time, a brake band is tightened to a brake drum.
10. The driving machine for a washing machine according to claim 9, wherein the mode in which the washing / dehydrating tub is set in a free state and can be freely rotated is that the upper and lower two clutch pieces are respectively engaged with the clutch gears and at the same time the brake band is loosened. apparatus. 11. The drive unit for the washing machine according to claim 8, wherein the clutch mechanism is a disc clutch including a drum and a disc. 12. A drive unit for a washing machine according to claim 8, wherein the coaxial washing shaft and dewatering shaft are connected in series in a longitudinal direction to a motor disposed below the water receiving tank.