JP3385674B2 - Washing machine control device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine provided with a non-volatile storage means which does not lose its stored contents without supplying power.
Related to a control device. 2. Description of the Related Art Conventionally, for example, a washing machine provided with a control device such as this type of washing machine has been configured as shown in FIGS. Hereinafter, the configuration will be described. As shown in the figure, a water tub 1 includes a washing and dewatering tub 2 and a stirring blade 3 is rotatably provided at the bottom of the washing and dewatering tub 2. The speed reduction mechanism 4 reduces the driving force from the motor 5 and transmits it to the stirring blade 3 during washing, and transmits it to the washing and dewatering tub 2 during washing. The switching between the dehydration and the washing at this time is performed by driving the drain valve 6.
Is driven, the washing water is drained, and the clutch of the speed reduction mechanism 4 is switched to perform the dewatering operation. The washing tub lid 6 has a folding structure with a hinge at the center,
The upper surface opening of the outer frame 7 is covered. A reed switch 8 is attached to the outer frame 7, and a lid opening detecting means 10 is constituted by a magnet 9 attached to the washing tub lid 6 facing the reed switch 8. The reed switch 8 is turned on when the magnet 9 opposed thereto, that is, when the washing tub lid 6 is closed, and turned off when the magnet 9 is separated, that is, when the washing tub lid 6 is open. [0005] The control device 11 is composed of a microcomputer, and controls the control means 12 for sequentially controlling a series of steps of washing, rinsing, and dehydration, and controls the motor 5, the drain valve 6, the water supply valve 13 and the like according to signals from the control means 12. The control device includes a power switching unit 14 for controlling, an input unit 16 including a key switch disposed in an operation panel 15, a display unit 17 including a display device such as a light emitting diode, and a nonvolatile storage unit 18. The non-volatile storage means 18 is a storage means which does not lose its stored contents even when power is not supplied, and allows writing and reading by the control means 12. Reference numeral 19 denotes an AC power supply, and reference numeral 20 denotes a phase advance capacitor of the motor 5. In the above construction, when the setting of the spin-drying operation is input by the input means 16 or when the spin-drying operation is started in the fully automatic operation, the reed switch 8 is turned off, and the washing tub lid 6 is opened in the spin-drying operation. Is dangerous because
In order to detect the lid opening abnormality by the lid opening detecting means 10 and request the user to close the washing tub lid 6, a display "U12" indicating the lid opening abnormality is displayed on the display means 17 and the nonvolatile storage means Also, writing was performed on 18 to leave a history of detecting abnormalities. Here, the lid opening abnormality is taken as a case where an abnormality is detected, but other abnormality contents may be used. Further, the contents stored in the non-volatile storage means 18 need not be limited to only the history of the abnormality detection. [0007] In such a conventional configuration, when the non-volatile storage means 18 is used for storing the history of abnormal contents, etc., the non-volatile storage means 18 is used at the time of factory shipment. Has been initialized. However, products that have been realigned off the production line may be inspected to determine whether a lid opening abnormality can be detected. In such a case, the history of the detection of the abnormality is written, and the
8 needs to be initialized. In such a case, an instruction is given to the control means 12 for controlling the nonvolatile storage means 18 using an electric code. That is, as shown in FIG.
The output unit 21 and the input unit 22 are connected using a diode 23, and when the control unit 12 is reset, the control unit 12 initializes the nonvolatile storage unit 18. However, after completion as a product, there is a problem that it is necessary to disassemble the product in order to connect the output unit 21 and the input unit 22 of the control unit 12 using the diode 23. An object of the present invention is to solve the above-mentioned problem, and an object of the present invention is to make it possible to initialize a non-volatile storage means without disassembly by using an input means even at a stage when a product is completed. [0010] In order to achieve the above object, the present invention provides a nonvolatile storage means for storing a history of abnormalities detected, a control means for controlling the nonvolatile storage means, Multiple switches and power supply to give instructions to control means
And an input unit having a switch , the control unit comprising:
Switches are pressed at the same time.
Rutoki initializes the non-volatile memory means, the predetermined
If any of the switches are not pressed
Normal power switch without initializing the nonvolatile storage means
Is performed, and the nonvolatile storage unit can be initialized by an instruction from the input unit. According to the present invention, the non-volatile memory means can be initialized without decomposing by using the input means even when the product is completed. Time can be reduced.
Further, the space for terminals for connecting electrical cords can be reduced, and the area of the printed wiring board can be reduced. An embodiment of the present invention will be described below with reference to FIG. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof is omitted. As shown in FIG. 1, the input means 21 includes a rinsing switch 22, a dehydration switch 23, and a power switch 2.
4 is provided, and an instruction is given to the control means 25, and the control means 25 can initialize the storage contents of the non-volatile storage means 18 according to the instruction from the input means 21. Further, the control means 25 sequentially controls a series of steps of washing, rinsing and dehydration. The operation of the above configuration will be described with reference to FIG. 2. First, it is determined in step 31 whether the power is on, and if the power is on, the process proceeds to the next step. If the power has not been turned on, it is determined in step 32 whether the power switch 24 has been pressed. If the power switch 24 has just been pressed, the rinsing switch 22,
It is determined whether the dehydration switches 23 are both pressed at the same time. If both are pressed at the same time, step 3
At 5, the non-volatile storage means 18 is initialized. If either the rinsing switch 22 or the dehydration switch 23 has not been pressed, the nonvolatile storage unit 18 is not initialized. Thereafter, at step 36, the normal power switch 24
Perform the processing in which is pressed, and turn on the power. As described above, according to this embodiment, the input means 2
1, the non-volatile storage means 18 can be initialized by a special operation, and even when the product is completed, the non-volatile storage means 18 can be initialized without disassembly by using the input means 21. The time for initialization can be reduced. In the above embodiment, the rinsing switch 2
When the power switch 24 is pressed while simultaneously pressing the dehydration switch 2 and the dehydration switch 23, the nonvolatile storage unit 18 is initialized. However, in consideration of safety, the nonvolatile storage unit 18 is initialized in an unintended state. The same effect can be obtained even if the nonvolatile storage unit 18 is initialized by another operation using the input unit 21. In the above embodiment, a washing machine has been described. However, a drier or a dishwasher can be similarly realized. As is apparent from the above embodiments, according to the present invention, a non-volatile storage means for storing a history of detecting abnormalities, a control means for controlling the non-volatile storage means,
A plurality of switches and a power switch for giving an instruction to the control means;
And an input means and a pitch, wherein, prior to
When the power switch is pressed, the plurality of switches
When several predetermined switches are pressed at the same time
The non-volatile memory means initialized, the predetermined plurality of
If any of the switches are not pressed,
Normal power switch is pressed without initializing volatile storage
Process is performed, and the non-volatile storage means can be initialized by an instruction from the input means. Therefore, even when the product is completed, the non-volatile storage means is not disassembled by using the input means. The means can be initialized, and the time required for initialization can be reduced. Further, the space for terminals for connecting electrical cords can be reduced, and the area of the printed wiring board can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a main part of a washing machine provided with a control device such as a washing machine according to an embodiment of the present invention. FIG. 2 is an operation flowchart of a main part of control means of the washing machine. FIG. 3 is a block diagram of a main part of a conventional washing machine provided with a control device such as a washing machine. FIG. 4 is a cross-sectional view of the washing machine. FIG. 5 is a circuit for initializing nonvolatile storage means of the washing machine. [Description of reference numerals] 18 Non-volatile storage means 21 Input means 25 Control means

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-121696 (JP, A) JP-A-62-247991 (JP, A) JP-A-4-318778 (JP, A) JP-A 61-61 131021 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) D06F 33/02

Claims (1)

(57) [Claim 1] Non-volatile storage means for storing a history of detecting abnormalities , control means for controlling the non-volatile storage means, and a plurality of switches for giving instructions to the control means And power
And an input unit having a switch , wherein the control unit is configured to, when the power switch is pressed, switch the plurality of switches.
Switches are pressed at the same time.
Rutoki initializes the non-volatile memory means, the predetermined
If any of the switches are not pressed
Normal power switch without initializing the nonvolatile storage means
A control device for a washing machine that performs processing when is pressed .