JPH07154B2 - Washing machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to a washing machine.

(B) Conventional Technology A washing machine that brakes the spin-drying rotation after waiting for the inertial force of the spin-drying tank to weaken after a power failure of the spin-drying drive motor (after a predetermined time delay) is well known. .

In addition, under the control of a microcomputer, a program consisting of steps such as washing, rinsing, and dehydrating is sequentially executed, and the opening / closing operation of the lid that opens / closes the clothes inlet is detected, and the lid is opened. A washing machine which gives a braking force to the dehydration tub in the case of the above is shown in JP-A-61-119297 (D06F49 / 04).

(C) Problems to be Solved by the Invention In the conventional example, when the lid is opened during a predetermined time after the motor is cut off, a braking force is immediately applied to the dehydration tank, which is in the program. In that case, even if the lid is closed again, the process does not proceed to the next step until the predetermined time elapses, which causes a problem of time loss.

If it is after the end of the program, the notification operation is performed after the predetermined time, even though the lid has been opened and the work of taking out the laundry has been completed, so the notification timing is missed. There's a problem.

The present invention solves the former problem in the washing machine according to claim 1 and the latter problem in the washing machine according to claim 2.

(D) Means for Solving the Problem A washing machine of the present invention is a dehydrating / washing tub having rotating blades inside, a lid for opening / closing a clothes inlet of the dehydrating / washing tub, and opening / closing of the lid. A lid opening / closing detection means for detecting an operation, a drive motor for rotating the rotary wing and the spin-drying / washing tub, a load drive means for energizing or disconnecting the drive motor, and the spin-drying / drying after the drive motor is disconnected. A braking means for stopping the rotation of the washing tub and a program consisting of steps such as washing, rinsing, intermediate dehydration, and final dehydration are sequentially executed, and the drive signal of the drive motor or the drive signal of the drive motor is sent to the load drive means as the program progresses. An execution control means for outputting a stop signal, and a delay braking means for counting a predetermined time after the stop signal is output at the end of the intermediate dehydration process and for operating the braking means after the time measurement. In the above, when the lid opening / closing detecting means detects the opening operation, the means for instructing the execution controlling means to temporarily stop the program of the execution controlling means, and the lid opening / closing detection during the timing operation of the delay braking means The lid opening / closing timing means for starting the timing when the opening operation is detected by the means and ending the timing when the closing operation is detected is compared with the time duration of the lid opening / closing timing means and the preset lid opening upper limit time. If the timed time is smaller than the lid open upper limit time, the stop by the temporary stop means is released when the closing operation is detected by the lid opening / closing means, and if the timed time is larger than the lid open upper limit time, the next step is performed. And delay control means for instructing the execution control means to execute the execution.

In addition, informing the operation end by the instruction of the execution control means at the end notification step of the program, and executing the program of the execution control means when the opening operation is detected by the lid opening / closing detection means. A pausing means for instructing the control means, and a lid opening / closing timing means for starting the timing when the opening operation is detected by the lid opening / closing detecting means during the timing operation of the delay braking means and ending the timing when detecting the closing operation. Comparing the time measured by the lid opening / closing means with a preset lid opening upper limit time, and if the time counting time is smaller than the lid opening upper limit time, the temporary stop is performed when the lid opening / closing means detects a closing operation. Delay control means for canceling the stop by the means, and for instructing the execution control means to drive the notification means if the timed time is longer than the lid opening upper limit time. It is configured to include.

(E) Action That is, in the washing machine according to claim 1, during the timekeeping operation of the delay control means which operates to output the stop signal from the execution control means to the load drive means of the drive motor at the end of the intermediate dehydration step, When the lid is opened and the braking is forcibly applied, if the opening time exceeds the preset upper limit opening time, the process immediately shifts to the next stroke when the lid is closed again.

Further, in the washing machine according to claim 2, the lid is opened during the timekeeping operation of the delay control means which operates to output the stop signal from the execution control means to the load drive means of the drive motor at the end of the final dehydration step. When the braking is forcibly applied and the opening time exceeds the preset lid opening upper limit time, the notification operation is immediately performed when the lid is closed again.

(F) Embodiments Embodiments of the present invention will be described with reference to the drawings.

In the fully automatic washing machine shown in FIG. 2, 1 is a machine frame, 2 is an operating portion provided on the upper rear of the machine frame 1, and 3 is elastically attached to the machine frame 1 via a vibration isolator 4. Outer tank supported by suspension,
The reference numeral 5 denotes a dehydrating and washing tub provided inside the outer tub 3 and having a large number of dewatering holes in the periphery, 6 denotes a rotary blade disposed at the bottom of the washing tub 4, 7 denotes a drive motor, and 5 and rotor 6
Is connected via a power transmission mechanism 8 to the rotating blade 6 for washing, and the washing tub 4 and rotating blade 6 for dehydration.
Both rotate in one direction at high speed. Reference numeral 9 is a drainage electric valve that opens and closes the drain hose 10, and 11 is a lid body that opens and closes the clothes inlet 11a provided on the upper surface of the machine frame 1.

Although not shown, a braking mechanism for the spin-drying / washing tub 4 is provided inside the power transmission mechanism 8, and the braking mechanism is interlocked with the operation of the drainage motor-operated valve 9. That is, if the drainage motor-operated valve 9 operates to open the valve, the braking mechanism releases the braking force, and if the drainage motor-operated valve 9 operates to close the valve, the braking mechanism releases the braking force. give. still,
The structure of the braking mechanism may be a conventionally known structure in which a brake shoe is brought into contact with and separated from a brake drum provided on a washing tub shaft.

Now, the operation of the washing machine of this embodiment is performed by the microcomputer 12 (hereinafter referred to as a microcomputer, for example, manufactured by Sanyo Electric Co., Ltd.).
Controlled by the LC6523C), the control mechanism of the washing machine centering on the microcomputer 12 will be described with reference to FIG.

The microcomputer 12 includes a CPU 13 (central processing unit).
t), RAM14 (random access memory), ROM15 (read on
ly memory), a timer 16, a system bus 17, and an input / output port 18.

The CPU 13 is composed of a control unit 19 and an arithmetic unit 20, the control unit 19 fetches and executes an instruction, and the arithmetic unit 20 uses a control signal from the control unit 19 in the instruction execution stage. Performs arithmetic processing such as binary addition, logical operation, increase / decrease, and comparison on data given from an input device or memory. The RAM 14 is for storing data relating to the washing machine, and the ROM 15 reads in advance means for operating the washing machine, setting conditions for judgment, rules for processing various information, etc. I will let you know.

The input port includes an input key circuit 21 including various operation setting keys, a safety switch 22 that also functions as a lid opening / closing detection unit that operates in association with opening / closing of the lid 11, and the washing tub 5
A signal from the water level sensor 23 or the like for detecting the water level in the inside is input, based on these information, from the output port,
LED drive circuit 24 composed of various light emitting diode groups,
A control signal is sent to the buzzer circuit 25 serving as a notification means for process end notification and abnormality notification, the load driving circuit 26 serving as a load driving means, and the like.

The load drive circuit 26 controls each operation of the drive motor 7, the water supply solenoid valve 27, and the drainage motor-operated valve 9 according to the control signal from the microcomputer 12. Reference numeral 18 is a power supply circuit for supplying a voltage to the microcomputer 12, and 29 is a reset signal generation circuit.

Then, the microcomputer 12 executes a program consisting of washing-drainage / dehydration-rinsing 1-drainage / dehydration-rinsing 2-drainage / final dehydration according to a sequence.

The operation based on such a configuration will be described with reference to FIG.

When the program proceeds to the dehydration process, the microcomputer 12 energizes the drive motor 7 to rotate the washing tub 5 at high speed (S-1), and when the energization time to the drive motor 7 ends, the motor 7 is turned off. Then (S-2), after a predetermined time T1 delay,
Braking the spin spinning (S-3) (S-4).

Now, during the predetermined time T1, when the lid 11 is opened in order to add or remove laundry, the dehydration rotation is immediately braked (S-4). The control will be described separately for the case where the dehydration step is an intermediate dehydration step before the rinsing step and the case of the final dehydration step.

(In the case of the intermediate dehydration step) As shown in FIG. 1B, when the lid 11 is opened,
Time measurement of time T2 is started (S-5). And the lid 11
Until the time T2 is closed again, that is, when the time T2 exceeds the preset lid open upper limit time,
Or, when the time measurement of the time T1 is finished, the lid body
When 11 is closed, the process immediately goes to the next rinsing step (S-
6). Further, when the lid 11 is closed before the time measurement of the time T2 is completed, the completion of the time measurement of the time T1 is waited for, and the process proceeds to the next step.

(In the case of the final dehydration step) As shown in FIG. 1C, when the lid 11 is opened,
Time measurement of time T2 is started (S-7). And the lid 11
When the time T2 or the time T1 is finished while the is being opened, the buzzer is sounded immediately to notify the user of the end (S-8). Further, when the lid 11 is closed before the time measurement of the time T2 is completed, the completion of the time measurement of the time T1 is awaited and the completion is notified.

From the above, the microcomputer 12 outputs the drive signal stop signal of the drive motor 7 to the load drive circuit 26 as the program progresses, and the execution control means of the drive motor 7 at the end of the intermediate dehydration process and at the end of the final dehydration process. When the opening of the lid 11 is detected by the delay switch means and the safety switch 22, which measures the predetermined time after outputting the stop signal and operates the braking mechanism after the time measurement is completed, the program is temporarily stopped. Means, a lid opening / closing timing means for starting timing when the opening operation is detected by the safety switch 22 during the timing operation of the delay braking means, and ending the timing when detecting the closing operation, and timing for the lid opening / closing timing means. The time is compared with a preset lid open upper limit time, and if the timed time is smaller than the lid open upper limit time, the temporary stop means is activated when the closing operation is detected by the safety switch 22. Cancels the stop, also will have the functions of the delay control means for the measurement time is commanded to the execution control means so as to perform the following step is greater than the cover opening upper limit time.

(G) Effect of the Invention In the washing machine of the present invention, the lid is opened and the brake is forcibly braked during the predetermined time from the output of the stop signal of the drive motor at the end of the intermediate dehydration to the braking. If the opening time exceeds the upper limit opening time of the lid, the process immediately proceeds to the next step when the lid is closed, so that time loss is eliminated.

Also, at the end of the final dehydration, if the lid opening time exceeds the lid opening upper limit time, a notification operation is performed immediately,
The notification timing is not shifted, and the user does not feel distrust of notifying.

[Brief description of drawings]

FIG. 1 is a flow chart showing the operation of the dehydration process of the washing machine of the present invention, FIG. 2 is an internal mechanism diagram of the washing machine, and FIG. 3 is a block circuit diagram of the control mechanism. 7 ... Drive motor, 11 ... Lid, 11a ... Clothing slot, 1
2 ... Microcomputer (control means), 22 ... safety switch (detection means), 25 ... buzzer circuit (informing means).

Claims (2)

[Claims] 1. A spin-drying / washing tub having rotating blades therein, a lid for opening / closing a clothes inlet of the spin-drying / washing tub, a lid opening / closing detector for detecting an opening / closing operation of the lid, and the rotation. A drive motor for rotating the blades and the spin-drying / washing tub, a load drive unit for energizing or disconnecting the drive motor, a braking unit for stopping the rotation of the spin-drying / washing tub after the drive motor is switched off, and a washing unit. , A rinsing process, an intermediate dehydration process, a final dehydration process, etc. are sequentially executed, and an execution control device for outputting a drive signal or a stop signal of the drive motor to the load drive device according to the progress of the program; A delay braking means for timing a predetermined time after the stop signal is output at the end of the stroke and for operating the braking means after the timing, the opening operation is performed by the lid opening / closing detection means. When it is issued, the temporary stop means for instructing the execution control means to temporarily stop the program of the execution control means, and when the opening operation is detected by the lid opening / closing detection means during the time counting operation of the delay braking means, the time counting is started. ,
The lid opening / closing timing means for terminating the timing when the closing operation is detected is compared with the time duration of the lid opening / closing timing means and a preset lid opening upper limit time, and if the timing time is smaller than the lid opening upper limit time. A delay for instructing the execution control means to cancel the stop by the temporary stop means when the closing operation is detected by the lid opening / closing means, and to execute from the next process if the timed time is longer than the lid opening upper limit time. A washing machine comprising: a control means. 2. A spin-drying / washing tub having a rotary wing inside, a lid for opening / closing a clothes inlet of the spin-drying / washing tub, a lid opening / closing detection means for detecting an opening / closing operation of the lid, and the rotation. A drive motor for rotating the blades and the spin-drying / washing tub, a load drive unit for energizing or disconnecting the drive motor, a braking unit for stopping the rotation of the spin-drying / washing tub after the drive motor is switched off, and a washing unit. , Rinsing, final dehydration, completion notification and other programs are sequentially executed, and execution control means for outputting a drive signal or a stop signal of the drive motor to the load drive means according to the progress of the program, and final dehydration And a delay braking means for timing a predetermined time after the stop signal is output at the end of the stroke and for operating the braking means after timing, And an informing means for informing the end of operation in response to a command from the execution control means, and a pausing means for instructing the execution control means to pause the program of the execution control means when the opening / closing detecting means detects an opening operation. And a lid opening / closing timing means for starting timing when the opening operation is detected by the lid opening / closing detecting means during the timing operation of the delay braking means, and ending timing when detecting the closing operation, and timing of the lid opening / closing timing means. The time is compared with a preset lid open upper limit time, and if the timed time is smaller than the lid open upper limit time, the stop by the temporary stop means is released when the closing operation is detected by the lid opening / closing means, and A washing machine comprising: delay control means for instructing the execution control means to drive the notification means if the timed time is longer than the lid opening upper limit time.