JPH0584377A - Fully automatic washing machine - Google Patents

Abstract

PURPOSE:To stop an insertion port of a detergent and the like at a position for an easy operation by once stopping a dehydrating tub, releasing its brake, driving a drive motor at a creep speed, operating a braking device when a fixed position is detected, and stopping the drive motor. CONSTITUTION:When the dehydrating process in which a dehydrating tub is rotated by a drive motor 11 is completed and a dehydration stop signal is inputted to a stop control device 22, the drive motor 11 and the brake motor of a braking device 20 are turned off by a shift preparing means 36. A brake is pressed to the lining face by the force of a spring via a wire, and the dehydrating tub is braked. When the dehydrating tub is stopped while an insertion port does not reach a fixed position, the drive motor 11 is half-wave-excited by a creep-speed rotating means 37 to rotate the dehydrating tub at a creep speed. When a fixed position detector 21 detects the fixed position, the excitation to the drive motor 11 is cut off by a stopping means 38, the excitation to a brake motor is turned on, and the dehydrating tub is stopped at the fixed position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for stopping a dehydration tub of a fully automatic washing machine at a fixed position.

[0002]

2. Description of the Related Art In a fully automatic washing machine, the dehydrating tub has a large diameter and a large external dimension in accordance with the tendency of increasing the washing capacity, and in particular, the height tends to increase because of the installation space.

9 and 10 schematically show a fully automatic washing machine.
1 is an outer tub, 2 is a top plate that covers the upper part of the outer tub, 3 is a water tub for accumulating water, 4 is a dehydration tub which is rotatably installed in the water tub 3 and stores cloth for washing and dehydration, and 5 is an upper part of the dehydration tub The attached balancer has a soft finish agent input port 6 on its upper surface. A water supply port 7 for supplying water to the aquarium 3 and a water supply valve 8 for controlling the water supply are arranged inside the upper surface plate 2.

In the portion of the balancer 5 where the soft finishing agent input port 6 is arranged, the soft finishing agent input port 6 is arranged so as to project inside the balancer 5 in order to maintain the balance correction effect by the liquid enclosed therein. There is a need. Therefore, the discharge port of the water supply port 7 must be projected inward from the inner wall 5a of the balancer 5, and the top plate 2 also needs a portion 2a that projects in the inner circumferential direction.

On the side wall of the dehydration tub 4, a detergent inlet 9 having a double wall structure is provided so that the detergent does not adhere to the cloth before water supply during reserved washing.

Then, in the dehydration tank 4, the pulsator 1
0 is rotatably installed inside, dehydration tank 4 and pulsator 1
0 is driven by the motor 11, and the rotational driving force is transmitted from the motor pulley 12, the belt 13, and the center pulley 14 via the mechanism portion 15.

Further, in the mechanical section 15, a driving mechanism for switching the dehydration tub 4 and the pulsator 10 is switched, and a brake mechanism section for stopping the dehydration tub 4 is installed internally, and is controlled by an electronic control section installed in the main body. ..

When a signal to stop dehydration is issued from the electronic control unit, the motor 11 is stopped and the brake is activated,
The dehydration tank 4 is stopped.

[0009]

When the fully automatic washing machine is stopped, the dewatering tub 4 is stopped at an arbitrary position. For example, as shown in FIG. 9, the soft finishing agent inlet 6 formed in the dewatering tub 4 is shown. , Or when the detergent input port 9 stops below the protruding portion 2a of the top plate 2, the top plate 2 interferes and a soft finish is made from the opening 2b of the top plate 2 to the input port 6 when the next washing is started. It becomes difficult to add the agent and the detergent to the detergent inlet 9, which is not convenient for the user.

Further, even when the dehydration tank 4 is stopped, the charging port 6 is provided on the rear side of the main body 6 even if it is not under the protruding portion 2a as described above.
When 9 is located, the diameter of the dehydration tank is large and the height of the main body is becoming high. For the small women who are the majority of users, it is difficult to put soft finishing agents and detergents. I was crying.

In view of the above, it is an object of the present invention to provide a fully automatic washing machine in which an inlet for a detergent, a soft finish, etc. formed in a dehydration tank is stopped at a fixed position on the front side.

[0012]

As shown in FIG. 1, the means for solving the problems according to the present invention detects whether or not an inlet 6 for a detergent, a soft finishing agent or the like formed in a dehydration tank 4 has reached a fixed position. And a stop control device 22 for stopping the dehydration tub 4 so that the inlet 6 comes to a fixed position based on a fixed position signal from the fixed position detector 21. The control device 22 temporarily stops the dehydration tub 4 by the braking device 20, and then releases the braking, and the movement preparation means 36.
And a fine speed rotation means 3 for driving the drive motor 11 at a fine speed.
7 and stop means 38 for operating the braking device 20 and stopping the drive motor 11 by the fixed position signal from the fixed position detector 21.

[0013]

In the above means for solving the problems, when there is a stop signal due to the completion of the dehydration or a temporary stop during the dehydration operation, the drive preparation means 36 stops the drive motor 11 to stop the braking device 2.
0 is operated to stop the dehydration tank 4 once, and then the braking is released.

Then, the fine speed rotation means 37 conducts a half wave to the drive motor 11 to rotate the dehydration tank 4 at a low speed.
When it is detected that the fixed position is reached by the fixed position signal from the fixed position detector 21, the stop motor 38 stops the drive motor 11 and operates the braking device 20.

At this time, the drive motor 11 rotates at a very low speed, and there is almost no brake slippage due to inertia during brake operation, and the drive motor 11 can be instantaneously stopped to stop the dehydration tank 4 at a fixed position.

[0016]

1 is a control block diagram of a stop control device for a fully automatic washing machine showing an embodiment of the present invention, FIG. 2 is a block diagram of the same fully automatic washing machine, FIG. 3 is its plan view, and FIG. 4 is a braking system. 5 is an internal electric circuit diagram of the apparatus, FIG. 6 is a flow chart of a fixed position stopping operation of a dehydration tank, FIG. 7 is an input waveform diagram when a full wave is conducted to a drive motor, and FIG. 8 is a drive motor. FIG. 5 is an input waveform diagram when half-wave conduction is performed. It should be noted that the same components as those of the related art are denoted by the same reference numerals.

The fully automatic washing machine of this embodiment is as shown in FIG.
The dehydration tub 4 is rotatably installed in the water tub 3, a drive motor 11 for rotationally driving the dehydration tub 4 and a braking device 20 for braking and stopping the dehydration tub 4 are provided.
An inlet 6 for a detergent, a soft finish, etc. is formed in the.

Then, a fixed position detector 21 for detecting whether or not the inlet 6 has reached a fixed position, and the fixed position detector 21.
And a stop control device 22 for stopping the dehydration tub 4 so that the input port 6 comes to a fixed position on the basis of the fixed position signal from.

As shown in FIG. 1, the drive motor 11 is composed of a capacitor motor, has a main winding 11a and an auxiliary winding 11b, and performs full-wave energization as shown in FIG. 7 on the main winding 11a. When the main winding 11a is energized with a half-wave as shown in FIG. 8, it has a function of normally rotating at normal speed. Further, when full-wave energization is performed on the auxiliary winding 11b, a force in the reverse rotation direction is strongly generated, and the drive motor 11 rotates in the reverse direction if it is in the normal rotation direction. When a half-wave current is applied to the auxiliary winding 11b, a force in the reverse rotation direction is generated, and electromagnetic braking is applied during normal rotation.
If it is stopped, it has the function of reversing at low speed.

As shown in FIG. 4, the braking device 20 is attached to the brake 24, which is wound around the brake lining surface 23a of the brake wheel 23 that rotates in synchronization with the dehydration tank 4 in the mechanism portion 15, and the brake 24. Actuator 25 that presses and separates the shoe from the brake lining surface 23a.
Consists of.

The brake 24 is rotatably supported around a fulcrum 25a, and one end thereof is rotatably attached to a fulcrum 26. On the lever portion 27 at the other end of the brake 24,
A spring 28 for urging the shoe of the brake 24 to be pressed is attached to the lining surface 23a, and in order to release the braking, the lever portion 27 is moved leftward in the figure by the operating portion 25 about the fulcrum 25a.

A brake motor 29 is provided in the operating portion 25.
, A solenoid 30, and an internal switch 31 are incorporated.

When the operating portion 25 is energized, the motor 2
9 is energized and the solenoid 30 is energized, the motor 29 rotates, and the wire 32 attached to the output shaft of the motor 29 and connected to the lever portion 27 is wound up by a predetermined amount, and the switch 31 is opened. At this time, the motor 29 is stopped and the solenoid 30 is still energized, so that the locking mechanism operates, the state in which the wire 32 is wound up is maintained, and the brake 24 is separated to release the braking state.

The operation of the brake is such that when the energization of the operating portion 25 is turned off, the solenoid 30 is turned off, the locking mechanism is released and the internal switch 31 is closed, and
The wire 32 becomes free and is rewound by the spring 28 so that the shoe of the brake 24 presses against the lining 23a.

The fixed position detector 21 includes a reed switch 33 and a magnet 34 for detecting that the dehydration tub 4 has reached this position, with the position when the soft finishing agent charging port 6 has come to the front side of the main body as a fixed position. The combination is such that the reed switch 33 is disposed below the bottom of the water tank 3, and the magnet 34 is at a position where the mechanism 34 rotates integrally with the dehydration tank 4 and the dehydration tank 4 is stopped at a fixed position. At this time, it is arranged so as to face the lead switch 33.

As shown in FIG. 1, the stop control device 22 temporarily stops the dehydration tub 4 by the braking device 20 by ending the dehydration process or operating the key input unit 35 to stop the dehydration process.
A movement preparation means 36 for releasing the braking, a fine speed rotation means 37 for driving the drive motor 11 at a fine speed, and a fixed position signal from the fixed position detector 21 actuates the braking device 20 to stop the drive motor 11. Stopping means 38 for
Driving means 39 for controlling the rotation of the drive motor 11 by performing full-wave energization or half-wave energization on the drive motor 11.
It is said that

Then, the slow-speed rotating means 37 outputs a drive signal to the drive means 39 so as to energize the main winding 11a of the drive motor 11 with a half-wave when the dehydration tank 4 is not stopped at a fixed position. ..

In the above structure, a dehydration stop signal is input to the stop control device 22 during the dehydration process in which the drive motor 11 is energized and the dehydration tub 4 is rotating, when the dehydration is completed, or by a stop operation by a key input. Then, fixed position stop control is performed as in the flow chart shown in FIG.

When there is a stop signal, the movement preparation means 36 turns off the drive motor 11 and turns on the brake motor 29.
When FF is performed, the solenoid 30 is turned off, the locking mechanism in the operating portion 25 is released, the wire 32 becomes free, and the lever portion 27 is pulled back by the force of the spring 28, and at the same time the internal switch 31 is closed. Becomes

The brake 24 is attached to the lining surface 23.
The dehydration tub 4 that was rotating at a high speed is braked by being brought into pressure contact with a and stopped within a preset time t ₁ .

After the lapse of t ₁ , the operating part 25 is turned on, that is, the solenoid 30 and the brake motor 29 are turned on, the winding of the wire 32 is completed within the preset time t ₂ seconds, and the internal switch 31 is turned off. , Brake motor 29
However, since the solenoid 30 is energized, the locking mechanism operates and the wire 32 is held in a wound state.

By the above operation of the braking device 20, the brake 24 is separated from the lining surface 23a, the pressure contact with the lining surface 23a is released, and the brake is released.

When the dehydration tub 4 is stopped without the inlet 6 reaching the fixed position, the fine motor rotating means 37 rotates the drive motor 11 at the fine speed in the same direction as the dehydration rotation after t ₂ seconds have elapsed. The dehydration tub 4 is rotated until the auxiliary winding 11b side of the drive motor 11 is turned off and the main winding 11a side is half-wave conductive, and the fixed position detector 21 outputs a fixed position signal.

When the inlet 6 reaches a fixed position and the lead switch 33 is turned on, the stop means 38 causes the drive motor 11 to move.
Power to the brake motor 13 is turned off, and power to the brake motor 13 is turned on.
FF is applied to brake the rotation of the dehydration tank 4. At this time,
Since the drive motor 11 is in a half-wave conduction and rotates at a very low speed, it has a small inertia and stops instantly, and the dehydration tank 4 can be stopped at a fixed position.

In order to detect the number of rotations of the dehydration tank 4, conventionally, when rotation control is performed by a combination of a lead switch and a magnet, these can be used as a fixed position detector. It is possible to arrange the position of the finishing agent input port 6 or the detergent input port 9 and the position of the reed switch in advance in correspondence with each other, perform the above control, and stop at a fixed position.

Therefore, by stopping the dehydration tub at a fixed position, it is possible to stop the soft finishing agent input port and the detergent input port at positions where it is easy to operate, which makes the loading operation easy and convenient. It will improve the sex.

Moreover, since the fixed position detector can utilize the conventionally used detector for detecting the number of revolutions, the fixed position stop can be realized by the control method without any special additional parts and the cost can be reduced. The function can be improved without raising it.

The present invention is not limited to the above embodiments, and it goes without saying that many modifications and changes can be made to the above embodiments within the scope of the present invention.

The fixed position detector 21 is not limited to the combination of the lead switch and the magnet, but may be, for example, a combination of the light emitting element and the light receiving element with a light shielding plate.

[0040]

As is apparent from the above description, according to the present invention, after the dehydration tank is once stopped, the braking is released and the drive motor is driven at a fine speed, and the constant position detector detects the constant speed. By operating the braking device by the position signal and stopping the drive motor to stop the dehydration tub at a fixed position, it becomes possible to stop the inlet for soft finishing agents, detergents, etc. at a position where it is easy to operate, The loading work becomes easier and convenience is improved.

Moreover, since the fixed position detector can utilize the conventionally used detector for detecting the rotational speed, the fixed position stop can be realized without any special additional parts, and the function can be achieved without increasing the cost. You can plan up.

[Brief description of drawings]

FIG. 1 is a control block diagram of a stop control device for a fully automatic washing machine showing an embodiment of the present invention.

FIG. 2 is a block diagram of the same fully automatic washing machine.

FIG. 3 is a plan view thereof.

FIG. 4 is a configuration diagram of a braking device.

FIG. 5 is an internal electric circuit diagram thereof.

FIG. 6 is a flow chart of a fixed position stopping operation of the dehydration tank.

FIG. 7 is an input waveform diagram when a full wave is conducted to the drive motor.

FIG. 8 is an input waveform diagram when a half wave is conducted to the drive motor.

FIG. 9 is a plan view of a conventional fully automatic washing machine.

FIG. 10 is a block diagram of the same fully automatic washing machine.

[Explanation of symbols]

 3 Water Tank 4 Dehydration Tank 6 Input Port 11 Drive Motor 20 Braking Device 21 Fixed Position Detector 22 Stopping Control Device 36 Movement Preparation Means 37 Fine Speed Rotating Means 38 Stopping Means

Claims (1)

[Claims] 1. A dehydration tank is rotatably mounted in a water tank, a drive motor for rotating the dehydration tank, and a braking device for braking the dehydration tank to stop the dehydration tank are provided. In a fully automatic washing machine in which an inlet for finishing agents and the like is formed, a fixed position detector that detects whether the inlet has reached a fixed position, and based on a fixed position signal from the fixed position detector A stop control device for stopping the dehydration tank so that the input port is located at a fixed position is provided, and the stop control device is
After temporarily stopping the dehydration tank by the braking device, a movement preparation means for releasing the braking, a fine speed rotation means for driving the drive motor at a fine speed, and a braking device by a fixed position signal from the fixed position detector. A fully automatic washing machine characterized in that it has a stopping means for activating the drive motor and stopping the drive motor.