JP3234212B2 - Gear motor for washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gear motor for a drainage device used in a fully automatic washing machine, and more particularly, to a washing cycle and a dehydration / drainage process.
hydrate / drain cycle)
The present invention relates to a gear motor for a draining device of a fully automatic washing machine having a two-stage clutch structure such that a washing / drying tub rotates independently or simultaneously according to a setting mode. .

[0002]

2. Description of the Related Art In general, a washing machine is an apparatus for washing laundry contaminated with various contaminants in an original state without damaging cloth based on an arbitrary setting mode. Recently, with the diversification of cloth quality, there is a need for a washing machine having a further improved washing power.

FIG. 1 is a cross-sectional view showing an example of a conventional washing machine, and is a view showing a fully automatic one-tank type washing machine.
This is the content disclosed in, for example, Japanese Patent Laid-Open Publication No. 7-227494. The overall configuration of the single-tub washing machine will be described. An outer tub 2 is provided in a washing machine case 1, and a washing and dewatering tub 3 is provided in the outer tub 2. A washing wing 4 such as an agitator is provided in the washing and dewatering tub 3.
And a washing motor 5 is provided below the outer tub 2. A clutch 9 and a speed reducer 8 are provided above the motor 5, and a washing shaft 6 and a dehydrating shaft 7 are directly connected between the speed reducer 8 and the washing blade 4. In addition, the drain valve 12 and the drain hose 13 are provided in a predetermined area below the outer tub 2,
After the washing and rinsing steps, the contaminated water is drained out. A tub cover 10 is provided at an upper end of the outer tub 2. In addition, the fluid balancer 1
Numeral 1 is provided above the washing and spin-drying tub 3 to prevent vibration and noise during washing and spin-drying.

In the conventional washing machine having the above-described structure, a washing blade driving motor and a washing / drying motor are provided so that the washing blade 4 and the washing / dewatering tub 3 can be simultaneously rotated during the washing process to improve the washing power. A motor for driving the dewatering tank is provided separately, or a speed reducer 8 is provided for one of the motors. But,
During the washing process, the washing machine includes a washing wing 4 and a washing and dewatering tub 3.
Are simply described in the opposite direction, and only the washing control method for this is described. Further, the rotational force of the washing motor 5 is reliably transmitted to the washing shaft 6 and the dehydrating shaft 7 with a simple structure in which the speed reducer 8, the clutch 9, and the washing motor 5 are integrated. However, accurate transmission of the rotational force is impossible without precise control of the motor 5, and a washing machine having such a structure has never been realized.

FIG. 2 is a longitudinal sectional view showing another example of the prior art washing machine. Such a fully automatic washing machine is known from Japanese Patent Application Laid-Open No. Hei 8-57186. . The overall configuration of the above fully automatic washing machine is the same as that of FIG. 1 described above. However, the difference is in the lower structure of the outer tub 2 and the washing and dewatering tub 3, and in the washing and rinsing process, the washing and dewatering tub 3 is changed depending on the type of the laundry and whether or not a cover (not shown) can be opened. This is a combination of fixed and rotating modes. In particular, the structural part is that the upper washing shaft 6a is connected to the lower washing shaft 6 via a speed reducer 8 as a planetary gear.
b, and the lower washing shaft 6 b is connected to the washing motor 5.
Linked to The lower dehydrating shaft 6c is mounted on the brake drum 2
0 and is connected to the upper dewatering shaft 6d. The lower washing shaft 6b is connected to a pulley 14a of the washing motor 5 via a pulley 14b and a belt 15.

In the conventional fully automatic washing machine constructed as described above, if a user sets a washing mode for washing coarse laundry, an actuator is operated for a predetermined time, and FIG. The indicated lever 27 is pulled by a certain distance. At this time, the brake band that has restrained the brake drum 20 is separated by a predetermined gap, and the washing and dewatering tub 3 is switched to the free rotation mode, so that the washing wing 4 and the washing and dewatering tub 3 are rotated in opposite directions. Here, the clutch gear is already engaged with the clutch piece.

On the other hand, when the user sets the washing mode for washing the fine laundry, the actuator is turned off, the brake lever 27 returns to the original state, and the brake band (not shown) moves the brake drum 20. The washing and dewatering tub 3 is in the fixed mode.
Here, when the user opens the cover in the mode in which the washing and spin-drying tub 3 is free, the washing and spin-drying tub 3 is suddenly switched to the fixed mode in consideration of only the stability.

FIG. 3A is an explanatory view of the operation of the clutch at the time of the washing process applied to FIG. 2, which is disclosed, for example, in Japanese Patent Application Laid-Open No. 8-57187. When the brake lever 27 moves by a distance (A ') from L to L1 in response to the turn-on of the actuator, the two clutch pieces 23 attached to the tip of the arm 22 are already engaged with the clutch gear 21. Since the brake band (not shown) is separated from the brake drum 20 by a certain gap, the upper dewatering shaft is in a free state. In other words, when the clutch piece 23 is engaged with the clutch gear 21, the clutch spring (not shown) does not integrate (connect) the drum fitted to the lower washing shaft and the lower dehydrating shaft, so that the washing is not performed. The wing and the washing and dewatering tub are rotated in opposite directions. This state is the free mode of the washing and dewatering tub 3. On the other hand, when the actuator is turned off, the spring 26 returns to the original state, that is, the position of L, and the brake band restrains the brake drum 20. This state is the fixed mode of the washing and dewatering tub 3.

FIG. 3B is an explanatory diagram of the operation of the clutch during the spin-drying process applied to FIG. 2. In the spin-drying process, when the brake drum 20 is completely released, the washing and spin-drying tub 3 is opened.
Can be rotated at high speed. On the other hand, if the lever 27 moves from L to L2 by a distance A ″ due to the energization of the actuator,
The two clutch pieces 23 attached to the tip of the arm 22 are separated from the clutch gear 21. For this reason,
The washing blade and the washing / dewatering tub rotate in the same direction so that the drum fitted to the lower washing shaft and the lower spinning shaft are integrated by the restoring force of a clutch spring (not shown). In other words, the rotational force of the motor of the washing machine is transmitted straight to the washing wings and the washing and dewatering tub without passing through the speed reducer.
A dehydration step is performed.

[0010] The conventional washing machines configured as described above include:
As described with reference to FIG. 1, the washing wing 4 and the washing and dewatering tub 3 are simultaneously rotated during the washing and dewatering processes to improve the detergency. However, since the lid stops immediately when the lid is opened, the user may mistake this as a failure. Also,
During the washing process, if an overload is applied to the washing blade, the spinning shaft and the washing shaft are rotated in opposite directions by the planetary gears of the reduction mechanism, and the overload is released. However, the above-described overload release operation should be repeated until the overload is released, so that the washing time and detergency are reduced. Further, although not described in detail in the drawings, there is no mention of a clutch structure and a drainage structure which should be performed prior to simultaneously rotating the washing / dewatering tub and the washing blade in the washing step, the rinsing step and the spinning step. It is in. Also, no mention is made of a gear motor applied to the drainage structure.

[0011]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems in the conventional washing machine, and an object thereof is to form output cams having different states from each other in a double structure. An object of the present invention is to provide a gear motor applied to a drainage device of a fully automatic washing machine, which can improve the quality and reliability of the washing machine by stably operating a contact of a switch.

The present invention is usefully applied to a washing machine in which the washing and dewatering tub rotates in directions different from the direction of the washing wings during the rinsing and rinsing steps. As well as improve the quality and reliability of the washing machine.

[0013]

A gear motor for a drainage device according to the present invention is a washing machine in which a washing blade and a washing and dewatering tub are rotated during a washing step and a rinsing step . A motor for generating a rotational force for driving the motor, an upper / lower output cam that operates with the rotational force of the motor and has a different circumferential radius and is coaxially fastened, and a drainage structure connected to the lower output cam. A connection lever for pulling an end of the clutch by pulling a connection piece of the above, a double contact for turning on / off a relay contact by rotation of the output cam, and an external connection terminal connected to the contact. It is characterized by having.

The external connection terminal includes at least one or more terminals including a common terminal, and is in contact with the double contact.

[0015] The double contact is one-stage contact in an initial state,
After a predetermined time has elapsed, the contact is returned to the initial state after two-stage contact.

One of the double contacts is connected to one side of a power supply terminal.

When the connection terminal is erroneously connected, the output cam and the double contact form an open loop to prevent a shot.

The gear motor according to the present invention includes a motor for generating a rotational force, a connecting lever that reciprocates linearly by the rotation of the motor, a microcomputer for controlling the driving of the motor, and a state of the connecting lever. A relay for maintaining the motor, an output cam rotated by the motor and having an upper cam and a lower cam positioned above and below, a first power source for switching the drive power of the relay and the motor under the control of the microcomputer.
A switching element, a second switching element for switching the driving power of the motor under the control of the microcomputer, and an upper cam of the output cam for switching the driving power supplied to the motor through the first switching element. A first contact, and a second contact for switching driving power supplied to the motor through the second switching element by a lower cam of the output cam.

In the microcomputer, the first contact is on and the second contact is off, and the first and second contacts are off.
In the initial state where the switching element is off, the first
By turning off the switching element and driving the relay and the motor, the connection lever is driven one step until the first contact is turned off and the second contact is turned on by the output cam, and the second switching element is turned on. ,
By driving the motor, the connection lever is driven in two stages until the first and second contacts are turned off by the output cam.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of a fully automatic washing machine, a drainage device thereof, and a washing control method according to the present invention will be described with reference to the accompanying drawings.

FIG. 4 is a cross-sectional view showing a fully automatic washing machine according to the present invention.

In the fully automatic washing machine, a washing shaft 46 connecting the washing wings 44 in the washing and dewatering tub 43 and a dehydrating shaft 47 connecting the washing and dewatering tub 43 in the outer tub 42 have a clutch mechanism 49. Are connected and arranged on the same line. A first pulley 54b connected to the clutch mechanism 49 and a second pulley 54a connected to the washing motor 45 are connected by a belt 55. A drainage structure is provided below the outer tub 42. The drainage structure includes a connecting hose 65, a drain valve 64, a drainage hose 6 in a predetermined area below the outer tub 42.
A one-stage or two-stage drainage structure composed of 6 and connecting pieces 63 is provided. The drainage structure is connected to the
The washing wing 44 and the washing and dewatering tub 43 are connected to a gear motor 61 having a heavy output cam structure, based on one or two-stage operation of the gear motor 61, in a fixed mode, a rotation mode,
Operate forward rotation and reverse rotation according to rotation / fixed mode and high-speed rotation mode.

The fully-automatic washing machine constructed as described above firstly includes the washing blade 44 and the washing / dewatering tub 4 in the fixed mode and the rotation mode based on the control of the microcomputer 110 (see FIG. 12).
3 is rotated forward or backward, respectively, to perform a general washing operation and a rinsing operation. Secondly, in the rotation / fixing mode, when the washing machine lid 50 is opened, the washing and dewatering tub 43 is rotated for a predetermined time and then stopped, and only the washing blade 44 is rotated to improve the washing power. Third, in the high-speed rotation mode, the washing blade 44 and the washing and dewatering tub 43 are rotated at a high speed to perform a dehydration process.

FIG. 5 is a schematic perspective view showing a coupling state of the clutch and the drainage device applied to FIG. 4, FIG. 6 is a transverse sectional view showing the drainage device of FIG. 5, and FIG. 7 is a clutch of FIG. It is a concave part perspective view which shows the coupling device of FIG.

First, referring to FIG. 5, in the clutch and drainage device applied to FIG. 4, the structure of the clutch is such that bolts 74 are provided so as to be able to flow to the outer frame of the clutch mechanism 49.
And a brake lever 70 which is in contact with the clutch lever 69 and the clearance adjusting screw 72 and which is fastened to the fixed frame 73a so as to be able to flow therethrough. A drainage device interlocking with the clutch structure is provided at a tip of the brake lever 70, and has a connection piece 63 having a variable projection 67, a drainage structure fixing piece 63a, and a locking piece 68 of the connection lever 62 of the gear motor 61,
A drain valve 64 connected to the fixed piece 63a and a locking motor 75 having a locking projection 75 inserted into the locking piece 69 to change the variable projection 67 of the connecting piece 63 to one or two steps.
1 is provided.

With the above configuration, when the gear motor 61 is driven to pull the connecting lever 62, the variable projection 67 fixed to the connecting piece 63 pushes the end of the brake lever 70. Next, the brake lever 70 is set on the play adjusting screw 7.
By pressing the second projection 72a, the clutch lever 6
Nineth clutch piece 71 is released. The clutch piece 71
Is engaged with the clutch gear (not shown),
As in the prior art, since the clutch spring (not shown) does not connect the drum fitted to the lower washing shaft to the lower dehydrating shaft, the washing and dewatering tub 43 rotates in the opposite direction to the washing blade 44.

On the other hand, when the clutch piece 71 is disengaged from the clutch gear, as in the conventional case, the clutch spring integrates the drum fitted into the lower washing shaft with the lower dehydrating shaft. The washing and spinning tub rotates at high speed in the same direction. At this time, the rotating force of the washing machine motor rotates the washing wings and the washing and dewatering tub straight without passing through the speed reducer, and the dewatering process is performed.

Here, the drainage device is provided with the gear motor 6.
The one connection lever 62 completely pulls the connection piece 63, thereby opening the drain valve 64 connected to the fixed piece 63a. At this time, a dehydration process is possible. Accordingly, the brake lever 70 is interlocked with the clutch lever 69, and the brake lever 70 fixes or releases a brake drum (not shown) via a brake band (not shown), thereby fixing the fully automatic washing machine. Mode and rotation mode.

Hereinafter, a drainage device of a fully automatic washing machine according to the present invention will be described in detail with reference to FIGS.

The fully automatic washing machine is provided in a drainage structure, and is provided with a connecting lever 6 of a gear motor 61 which operates during drainage.
A locking piece 68 for locking and fixing the second projection 2, a guide slot 84 for fixing the variable projection 67, and a fixing piece 63a for locking and fixing the drain valve 64 of the drain structure.
And a locking projection 68 at the tip of the connecting lever 62 on a locking piece 68 formed on one side of the connecting piece 63.
5 is provided with a gear motor 61 that is locked and fixed and pulls the tip of a brake lever 70 by a variable projection 67. Further, the drainage device includes a bellows 76 that is compressed by a horizontal rotation force of the gear motor 61 and an elastic force of a plurality of springs to open a drainage valve 64 during a drainage stroke, and the bellows 76 and the first and second bellows. The first and second loads 77 and 78 for guiding the springs 79 and 80, and the washing and dewatering tub 4 are moved and moved according to the guidance of the first and second loads 77 and 78.
A drain valve 64 for opening or shutting off the connection hose 65 and the drain hose 66 is provided.

The variable projection 67 is inserted into the guide slot 84, and the gap between the variable projection 67 and the clutch is adjusted in consideration of the clearance of the clutch, and then fixed with the nut 83 and the bolt 60. Here, a gap adjusting groove 67 a is formed above the variable projection 67. In addition, the first load 7
A first spring 79 is inserted into the inside of the second load 7, and both ends thereof are locked and fixed in the concave groove of the drain valve 64 and the concave groove 63b of the fixing piece 63a.
8 are provided on the same line as the rib 82. In addition, the second
A second spring 80 and a bellows 76 are fastened to the outer peripheral surface of the load 78.

In the drainage device configured as described above, the variable projection 67 opens or closes the drainage valve 64 in accordance with the operation mode according to the pulling operation of the connecting lever 62. This will be described in detail.

The drainage device applies power to the gear motor 61 mounted on the lower frame 73 of the fully automatic washing machine during the drainage stroke, and pulls the connecting lever 62 a certain distance (D) when pulling one step down. The first spring 79 provided inside the first load 77 is pulled. At this time, the first spring 7
Although the first load 77 moves by a certain distance (D) due to the elasticity of 9, the second load 76 is not affected.

At this time, the variable projection 67 is inserted into the guide slot 84 of the connecting piece 63 via a pair of washers 83, fixed by the nut 60, and then fixed to the brake lever 70 at a fixed position 69a. In this state, when the connecting lever 62 is pulled at a predetermined distance (D), the brake lever 70 is pushed out. At this time, the pulling distance is 7
The distance (E) between the collar 81 formed on the inner peripheral surface at one end and the rib 82 formed on the outer peripheral surface of the second load 78
It is as follows.

Thereafter, the gear motor 61 is connected to the connecting lever 6.
2 is further pulled in the one-step operation state, the connecting lever 62, the brake lever 70, and the variable protrusion 67 are pulled, and the collar 8 formed on the outer peripheral surface of the first load 77 is pulled.
1 is a rib 8 formed on the inner peripheral surface at one end of the second load 78.
2, the second spring 80 is compressed. The second spring 80 is compressed, the bellows 76 is contracted, and the drain valve 64
, The washing water in the washing and dewatering tub 43 can be discharged to the outside.

Thereafter, when the gear motor 3 is turned off, the connecting lever 62, the brake lever 70, the variable projection 67, the second load 78, and the first spring 79 are sequentially actuated by the restoring force of the second spring 80 and the brake lever 70. The bellows 76 and the first load 77 are returned to the initial state. The bellows 76 and the drain valve 64 are connected to the connecting hose 6.
By closing the space between 5 and the drain hose 66, drainage is stopped. Therefore, the drainage device has a simple structure in which the washing water in the washing and dewatering tub 43 is not drained when the gear motor 61 is operated in the first stage, but is effectively drained in the second stage operation. it can. Since the operating state of the clutch at the time of the two-stage operation is the same as that of the conventional art, detailed description thereof will be omitted.

On the other hand, FIG. 8A shows the gear motor 6 shown in FIG.
FIG. 8B is a plan view showing a cutout of the first concave portion, and FIG. 8B is a cross-sectional view showing the output cam of FIG.

First, referring to FIG. 8 (a), the gear motor 61 is used to operate an internal gear portion for decelerating the motor and the first stage 62-1 or the second stage 62-2 of the connecting lever 62. In addition, the contact 92 based on the drive of the motor
And an output cam 91 for turning on / off the power supplied through terminals 93-1, 93-2, and 93-3. Here, the output cam 91 for turning on / off the contact is
As shown in FIG. 8B, an upper output cam 91-1 having a different circumferential radius from the upper output cam 91-1.
A lower output cam 91-2 having a smaller size and having different circumferential radii on both sides;
1-1, a first contact 92a, a second contact 92b, and a common contact 93-2 disposed close to the lower output cam 91-2. The upper output cam 91-1 and the lower output cam 91 of the output cam 91 are provided. -2 based on the coordination operation of the gear motor 6
1 controls one-stage or two-stage operation.

FIGS. 9 (a) to 9 (c) are schematic diagrams showing the contact relationship between the output cam of the gear motor and the switch of FIG. 8 (a), and FIGS. 10 (a) to 10 (c) 8A is a circuit diagram showing a drive circuit of the gear motor of FIG. 8A, and FIG. 11 is a timing diagram of a triac and a switch according to power supply to the gear motor of FIG. 8A.

As shown in FIG . 10A, the terminal 93-2
When the terminal 93-3 is opened and then exchanged and connected, the operator often occurs at the time of service. In this case, when the first triac TR1 is turned on for one-stage operation, one side of the power supply is switched from the first triac TR1 to the first switch SW.
1 → The other end of the power supply comes into contact via the second switch SW2. At this time, when the second switch SW2 is turned on, a shot state occurs, so that the triac TR1 inside the controller is destroyed. Therefore,
In order to turn off the second switch SW2, a cam groove 91-3 is added to the lower output cam 91-2.

FIGS. 9A and 17A show terminals 93.
This is a state where power is not supplied to the gear motor 61 when the terminal -2 and the terminal 93-3 are normally connected , that is, an initial state in which the first triac TR1 and the second triac TR2 are all turned off. At this time, the first
The first switch SW1 connected to the triac TR1 is turned on and the second switch SW2 is turned on.
Is in a turned-off state (see the timing diagram of FIG. 11).

Next, FIG. 9 (b) and FIG. 17 (b)
This is a state where the first-stage operation of the gear motor 61 has been completed. That is, the state of FIG. 9A and FIG.
When only the triac TR1 is turned on, the relay R
Since power is automatically supplied to Y and power is supplied to the gear motor 61 via the first switch SW1,
The connecting lever 62 is pulled, and the output cam 91 rotates counterclockwise. The output cam 91 extends over a predetermined angle.
Rotates Te (usually when the elapse of time t1, the first switch SW1 is turned off), the first switch SW1 of the upper output cam 91-1 is turned off, the lower the output cam 9
The 1-2 second switch SW2 is turned on. That is, since the first switch SW1 is turned off, the power is cut off by the gear motor 61 and the output cam 91 and the connection lever 62 are stopped, but the first triac TR1 is continuously turned on (FIG. 11).

[0043] FIG. 9 (c) and FIG. 17 (c) is a state where the two-stage operation is completed subsequent <br/> gear motor 61. That is, from the state of FIG. 9B and FIG.
When the second triac TR2 is turned on, power is supplied through the second switch SW2 and the gear motor 6 is turned on.
1 rotates, the output cam 91 rotates, and the connecting lever 62 is pulled into the gear case. Here, as shown in FIG. 11, the one-stage operation is normally completed when the time t1 elapses, but for a more stable operation, after the elapse of the time t1 + α from the start time of the one-stage operation. The two-stage operation is started. The output cam 91 is at a predetermined angle
Rotates over (usually, when the elapse of time t2, the second switch SW2 is turned off), since the power supply is cut off to the second switch SW2 gear motor 61 is turned off, connected to the output cam 91 lever 62
Stops. In this state, by controlling the microcomputer to turn on only the first triac TR1 at a minimum, the connection lever is not restored from the driving state of the relay RY, and it is stopped by the two-step operation 62-2. Become.

On the other hand, in FIG. 10 (a), for the purpose of after-sales service, the operator operates the terminal 93-2 and the terminal 93-3.
, Even if they are replaced with each other and connected,
Even if the first triac TR1 is turned on for one operation, since the second switch SW2 is turned off, the gear motor 61 does not operate, but no shot occurs. As described above, even when an operator makes a wrong connection, an open loop is formed by the contact operation of the dual output cam, so that destruction of elements in the control unit can be prevented.

FIG. 12 is a block diagram showing a driving device for a fully automatic washing machine according to the present invention.

Referring to FIG. 4 and FIG. 12, the driving device includes a microcomputer 110 for performing various control inputs / outputs for controlling external peripheral devices, and a user setting mode for the microcomputer 110. And a key operation unit 112 for displaying the operating state of the washing machine, and the washing and dewatering tub 43 based on the control of the microcomputer 110.
Water level sensor unit 11 for sensing the amount of washing water put into the inside
1, a water supply valve driving unit 114 that controls a water supply valve 59 to supply proper washing water into the washing and dewatering tub 43 based on the water level sensing of the water level sensor unit 111, and during the stroke of the washing machine. A power supply is supplied to the gear motor 61 based on the control of the microcomputer 110 to control the one-stage or two-stage operation of the drain valve 59 in the drain device. There are one-stage and two-stage drain drive units 113 and 115.

In the driving device configured as described above,
The microcomputer 110 controls peripheral devices of the fully automatic washing machine, and the key operation unit 112 inputs a key signal of a user setting mode to the microcomputer 110. And the key operation unit 11
When the water level is set by 2 or the water level is set by sensing the amount of cloth, the water supply valve driving unit 114 opens the water supply valve 59. Then, as the water supply valve 59 is opened, the water level sensor unit 111 detects whether the washing water has been supplied to the set water level, and when the water has been supplied to the set water level, 1 is output.
In a state where the drain valve driving unit 113 pulls the drain valve 64 in one stage, the washing motor 45 is driven to drive the washing and dewatering tub 4.
3 and the washing wing 44 are rotated together. During the washing process by the rotation of the washing and dewatering tub 43 and the washing wings 44, the lid open detecting unit 117 detects whether or not the lid 50 of the washing machine is opened, and outputs the detected signal to the microcomputer 110.
To provide. Next, when the set washing time has elapsed, the two-stage drain valve driving unit 115 opens the drain valve 64 in two stages for intermittent dehydration and main dehydration.

The algorithm of the above driving device is shown in FIG.
This will be described in detail with reference to FIG.

FIG. 13 is a flow chart showing one embodiment of the washing control method of the present invention, and shows the operation state of the washing machine when the lid is opened during the washing or rinsing process.

When the fully automatic washing machine enters the washing easy rinsing mode (S130), it determines whether it is a washing process or a rinsing process (S131). If it is not the washing / rinsing step in the discriminating step S131, the other steps are performed and the process ends (S140). If the washing / rinsing step is performed in the determination step (S131), the washing wing 44
And the washing and dewatering tub 43 are rotated in opposite directions (S132).
That is, when the washing / rinsing step is performed, the washing wing 44 and the washing and dewatering tub 43 are rotated in opposite directions, and when the washing / rinsing step is not performed, another step is performed (S140).

Next, when the washing blade 44 and the washing / dewatering tub 44 rotate in opposite directions by sensing the washing and rinsing steps, it is sensed whether the lid is open (S133). When the lid 50 is opened, an abnormal alarm sound is generated to notify that the operation is not normal (S135). Such an audible alarm may be used to mean a pause for loading laundry. After sounding the alarm in this manner, the washing wing 44 and the washing and dewatering tub 4 are provided for user safety.
Stop all three. At this time, the user can insert additional laundry (S139). Conversely, the lid
If the lid is not opened in the open sensing step (S133), it is determined whether the set time for the washing / rinsing step has elapsed (S134), and after the set time has elapsed, another step is performed (S140). If the time has not elapsed, the process proceeds to the step (S132). Thereafter, after a certain time has elapsed since the washing wing 44 and the washing and dewatering tub 43 were stopped (S137), it is sensed again whether the lid 50 is open (S138). Rotates the washing wing 44 and the washing and dewatering tub 43 in opposite directions, and performs the washing / rinsing process for the remaining time.

However, the steps (S135) and (S13)
In 6), the washing wing 44 and the washing / dewatering tub 43 are all stopped to generate an abnormality alarm.
4 and the washing and dewatering tub 43 stop immediately, so that the user may erroneously recognize that the washing machine is out of order. In other words, since an abnormal alarm sound is generated when the lid is opened, if the washing wings and the washing and dewatering tub stop immediately, many users do not think that this is a step for safety or loading the laundry. The washing process may be changed as follows in order to prevent the user from erroneously determining that the washing wing and the washing and dewatering tub stop suddenly after the alarm sounds as a malfunction. That is, although not shown, even after detecting the opening of the lid, the washing wing and the washing and dewatering tub are rotated in opposite directions for a certain period of time, and then an abnormal alarm is generated. May be stopped.

FIG. 14 is a flow chart showing a method for controlling the operation of the washing machine when the lid is opened. When the washing / rinsing process is selected, the washing wing 44 and the washing and dewatering tub 43 are connected to each other. Rotate in the opposite direction (S130 to S13
2). Next, when the lid is opened, an abnormality alarm is generated, and the washing wing 44 and the washing and dewatering tub 43 are reversely rotated at a low speed in order to take into account the safety of the user and to notify that the malfunction has not occurred (S133). (S135) (13
6). Further, the step (S135) may further include a step (S135-1) of generating a cloth amount detection notification signal.
36), a cloth amount re-sensing step (S136-1) can be added. Therefore, the user can confirm that the washing machine is in a normal state because the washing wing 44 and the washing and dewatering tub 43 rotate for several seconds when the lid 50 is opened. The subsequent steps are shown in FIG.
3 is the same as that described in the method.

FIGS. 15 and 16 are flow charts showing another embodiment of the washing control method of the present invention.

In the washing control method, first, when the washing process starts, it is determined whether or not the water level has been set by the user (S150). If the water level has not been set, the process proceeds to a cloth amount sensing course. After sensing the water level appropriate for the amount of cloth,
The process proceeds to a continuous washing process (S151). The step (S1)
When the user sets the appropriate water level in 51), the normal water level and the appropriate water level are set by the data set (S152) based on the water level (S152). Next, the water supply valve 59 is turned on (S153), the water is re-supplied to the set water level (S154), and the water supply valve 59 is shut off (S46).
Then, after all the washing times (T) are initialized (S1)
56) In a state where the gear motor 61 is driven and the drain valve is pulled to one stage (S157), the washing / dewatering tub 43 and the washing wing 4
4 is rotated forward / reversely (S158) to perform the washing process. That is, the fully automatic washing machine of the present invention includes the step (S)
According to 158), the washing / dewatering tub 43 is operated from the fixed mode to the rotation mode. In other words, in the clutch structure of the washing machine, the clutch lever 69 connected to the drain valve 64 is pulled by a distance that does not allow natural drainage.
When the clutch lever 69 is not operated by the brake lever 70, the washing / dewatering tub 43 and the washing wing 44 rotate in the forward or reverse direction. That is,
The purpose of the present invention is to indicate operations in the washing and rinsing steps.

Thereafter, the lid open detecting section 117
Detects whether the lid of the washing machine being washed is opened by the user due to the rotation of the washing and dewatering tub 43 and the washing wing 44 (S159), but if the open state of the lid 59 is not sensed, the set washing is performed. Subsequently, the washing / dewatering tub 43 and the washing wing 44 rotate. If it is detected in step S159 that the washing machine lid 59 has been opened, the initialization time is counted, and the counted time (T) is counted.
Is compared with a predetermined time (t1) (S160). Here, in the time comparing step (S160), it is determined from which point the gear motor 61 is driven as shown in FIG. This is a very important step because it determines from which point the clutch mechanism should be activated.

As a result of the comparison in the step (S160), if the counted time, that is, the opening time of the washing machine lid 59 does not exceed the predetermined time, and the user closes the washing machine lid 59 (S161), the gear is changed. The motor 61 is driven to pull the drain valve 64 in one step (S162), and then the washing and dewatering tub 43 and the washing wing 43 are rotated in the forward or reverse direction (S163). In other words, in the above series of steps (S161 to S163), the user opens the washing machine lid 59 within a predetermined time, confirms the rotation state of the washing and dewatering tub 43 with the naked eye of the user, and then closes the lid 59. In such a case, the previously set washing process is performed.

As a result of the comparison in the step (S160), if the counted opening time of the washing machine lid is longer than or equal to the predetermined time, the gear motor 61 is driven to move the drain valve 64 to the first stage. Return to the original position (S16
4) The washing wing 44 is rotated only (S16).
5). That is, the fully automatic washing machine of the present invention operates in the rotation / fixed mode.

Then, during the washing, the user opens the washing machine lid, and the washing and dewatering tub 43 and the washing wing 44 for a predetermined time.
When the set washing time elapses after the rotation of the water can be directly confirmed by the naked eye (S166), the drain valve 64 is provided in two stages.
Then, the washing and dewatering tub 43 and the washing wing 44 are rotated in the same direction to enter a dehydration step corresponding to intermittent dehydration and main dehydration (S168). That is, the fully automatic washing machine of the present invention operates in the high-speed rotation mode. Therefore, when the lid is opened, the washing / dewatering tub 43 and the washing wings 44 are rotated for a predetermined time, and then the elements that the user mistakes as a failure of the washing machine are removed through the process of rotating the washing wings 44 only. At the same time, the detergency can be improved.

[0060]

As described above, according to the drainage device for a fully automatic washing machine of the present invention and the washing control method therefor, the following effects are obtained.

First, since the clutch piece is arranged coaxially on the connecting piece that connects the drainage device and the gear motor, the drainage device and the clutch structure can be made compact.

Second, since the variable protrusion for adjusting the gap of the clutch piece is attached to the guide slot of the connecting piece for the first and second operation of the drainage device, the gap of the clutch lever can be easily adjusted.

Third, in the clutch structure, the gap between the clutch lever and the brake lever can be easily adjusted with the play adjusting screw.

Fourth, the quality and reliability of the washing machine can be improved because the output cam in the gear motor is formed in a double structure and the contacts of the switch are operated safely.

Fifth, when the connection terminal of the gear motor is erroneously connected, a shot is prevented by the switching contact of the dual output cam, so that the peripheral circuit can be protected.

Sixth, since an alarm sound is generated when the washing machine lid is opened, a safety display can be provided to the user.

Seventh, when the washing machine lid is opened, the washing / dewatering tub and the washing wing rotate for a few seconds, and then only the washing wing rotates. Therefore, it is possible to prevent the user from mistakenly assuming that a failure has occurred. The phenomenon that the dewatering tub and the washing wing rotate in the reverse direction can be visually confirmed.

Eighth, the gap between the drainage device and the clutch structure can be adjusted.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an example of a conventional washing machine.

FIG. 2 is a longitudinal sectional view showing another example of the conventional washing machine.

3A is a diagram illustrating the operation of the clutch during the washing process applied to FIG. 2, and FIG. 3B is a diagram illustrating the operation of the clutch during the spinning process applied to FIG. 2; is there.

FIG. 4 is a cross-sectional view showing a fully automatic washing machine of the present invention.

FIG. 5 is a schematic perspective view showing a connected state of a clutch and a drainage device applied to FIG. 4;

FIG. 6 is a transverse sectional view showing the drainage device of FIG. 5;

FIG. 7 is a perspective view of a concave portion showing the clutch connecting device of FIG. 5;

8A is a plan view of the gear motor of FIG. 5 in which a recess is cut away, and FIG. 8B is a cross-sectional view of the output cam of FIG. 8A.

9 (a) to 9 (c) are schematic diagrams showing a contact relation between an output cam and a switch of the gear motor of FIG. 8 (a).

FIGS. 10A to 10C are circuit diagrams showing a drive circuit of the gear motor of FIG. 8A.

FIG. 11 is a diagram showing the timing of a triac and a switch according to power supply to the gear motor of FIG. 8 (a).

FIG. 12 is a block diagram showing a driving device of the fully automatic washing machine of the present invention.

FIG. 13 is a flowchart showing one embodiment of the washing control method of the present invention.

FIG. 14 is a flowchart showing another embodiment of the washing control method of the present invention.

FIG. 15 is a part of a flowchart showing another embodiment of the washing control method of the present invention.

FIG. 16 is a part of a flowchart showing another embodiment of the washing control method of the present invention.

17 (a) to (c) are circuit diagrams showing a drive circuit of the gear motor of FIG. 8 (a).

[Explanation of symbols]

 1,41 Washing machine case 2,42 Outer tub 3,43 Washing and dewatering tub 4,44 Washing wing 5,45 Washing motor 6,46 Washing shaft 7,47 Dehydrating shaft 8 Reduction gear 9,49 Clutch 10 Tap cover ( tub-cover) 11, 51 Fluid balancer 12, 64 Drain valve 13, 66 Drain hose 14a, 14b, 54a, 54b Pulley 15 Belt 20 Brake drum 21 Clutch gear 22 Arm 23 Clutch piece 24, 63 Connecting piece 25 Diagonal arm 26 Spring 27 Lever 50 Lid 59 Water supply valve 60 Nut 61 Gear motor 6 Two-stage connection lever 62-1 One-stage operation 62-2 Two-stage operation 65 Connection hose 67 Variable projection 68 Locking piece 69 Clutch lever 69a One end of brake lever 70 Brake lever 71 Clutch piece 72 Idling adjustment screw 73a Fixed frame 73 Lower frame 74 Bolt 75 Locking projection 76 Bellows 77, 78 Road 79, 80 Spring 81 Collar 82 Rib 83 Washer 91-1 91-2 Upper and lower output cam 91- 3 Cam groove 92 Contact 93-1, 93-2, 93-3 Terminal 94 Motor 101 Control unit 102 Drive unit 110 Microcomputer 111 Water level sensor unit 112 Key operation unit 113 1st stage Drain valve drive unit 114 Water supply valve drive unit 115 2nd stage Drain valve drive unit 116 Motor unit 117 Lid open detection unit TR1, TR2 Triac RY Relay SW1, SW2 Switch

Continued on the front page (31) Priority claim number 1996-15074 (32) Priority date June 7, 1996 (June 6, 1996) (33) Priority claim country South Korea (KR) (56) References JP-A-9-253387 (JP, A) JP-A-8-38788 (JP, A) JP-A-2-99091 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) D06F 39 / 08 311

Claims (6)

(57) [Claims] 1. A microcomputer for controlling a washing, rinsing and draining process of a washing machine in a washing machine in which a washing wing and a washing and dewatering tub are rotated during a washing or rinsing process, and a rotational force controlled by the microcomputer. A motor for generating a motor; a connecting lever for performing a linear reciprocating motion by rotation of the motor; a relay for setting the connecting lever in a predetermined state; and an upper cam and a lower cam which are rotated by the motor and positioned vertically. An output cam, a first switching element for switching the drive power of the relay and the motor under the control of the microcomputer, a second switching element for switching the drive power of the motor under the control of the microcomputer, and the output. The first switching element is provided by an upper cam of the cam. A first contact for switching drive power supplied to the motor via the second contact; and a second contact for switching drive power supplied to the motor via the second switching element by the lower cam of the output cam. washing machine gear motor <br/> terpolymer consisting comprise. 2. The computer according to claim 1, wherein
The first switching element is turned on from an initial state in which a contact is in an on state, a second contact is in an off state, and both the first switching element and the second switching element are off, whereby the relay and the motor are turned on. Is driven, the first contact is turned off by the output cam,
The connection lever is driven one step until the second contact is turned on, and then the microcomputer controls the second contact.
The switching element is turned on,
The gear motor according to claim 1, wherein the motor is driven, and the connecting lever is driven in two steps until the first and second contacts are turned off by the output cam. . 3. The connecting lever is operated until the first contact is turned off by the output cam and the second contact is turned on when the first switching element is turned on and the relay and the motor are driven. The brake lever is interlocked so that the washing wing and the washing and dewatering tub are rotated in different directions from each other, and thereafter,
When the second switching element is turned on and the motor is driven, the connection lever is driven in two stages until the first and second contacts are turned off by the output cam. The gear motor for a washing machine according to claim 1, wherein the clutch lever is interlocked so that the washing blade and the washing and dewatering tub rotate at a high speed in the same direction. 4. The apparatus according to claim 1, wherein the connection lever is attached so as to interlock with a drainage device of the washing machine and a brake lever for restraining / releasing the rotation of the washing / dewatering tub. Gear motor for washing machine. 5. The brake lever according to claim 1, wherein the brake lever is attached to the clutch lever so that the washing wing and the washing and dewatering tub are rotated at high speed in different directions or in the same direction. Item 2. A gear motor for a washing machine according to item 1. 6. The microcomputer controls the first and second switching elements such that the connection lever is driven one step and two steps, and the washing and dehydration tub is driven by one step of the connection lever. Is released, the two-stage drive of the connection lever opens the drainage device to drain the washing water, and enables the washing blade and the washing and dewatering tub to rotate at a high speed in the same direction. The gear motor for a washing machine according to claim 1.