JPH07124376A - Control devices for washing machines - Google Patents

Abstract

(57) [Abstract] [Purpose] In a control device such as a washing machine equipped with a non-volatile storage means in which the stored contents are not lost even if power is not supplied, it is disassembled by using the input means even when it is completed as a product. It allows to initialize the non-volatile storage means without. Constitution: Non-volatile storage means 18 that does not lose its stored contents even if power is not supplied, control means 25 for controlling the non-volatile storage means 18, and input means 21 for giving an instruction to the control means 25 are provided. The means 25 is adapted to initialize the non-volatile storage means 18 according to an instruction from the input means 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for a washing machine or the like, which is provided with a non-volatile storage means in which stored contents are not erased even when power is not supplied.

[0002]

2. Description of the Related Art Conventionally, for example, a washing machine provided with a control device for this type of washing machine has been constructed as shown in FIGS. The configuration will be described below.

As shown in the figure, a water tub 1 contains a washing / dehydrating tub 2, and a stirring blade 3 is rotatably provided at the bottom of the washing / dehydrating tub 2. The deceleration mechanism 4 decelerates the driving force from the motor 5 and transmits the driving force to the stirring blade 3 at the time of washing and to the washing / dehydrating tub 2 at the time of dewatering. Switching between dehydration and washing at this time is performed by driving the drain valve 6,
When is driven, the washing water is drained, the clutch of the speed reduction mechanism 4 is switched, and the dehydration operation is performed. The washing tub lid 6 has a folding structure with a hinge at the center,
It covers the upper opening of the outer frame 7.

A reed switch 8 is attached to the outer frame 7, and a magnet 9 attached to the washing tub lid 6 facing the reed switch 8 constitutes a lid opening detection means 10. The reed switch 8 is turned on when the magnet 9 facing it is close, that is, when the washing tub lid 6 is closed, and is turned off when the magnet 9 is separated, that is, when the washing tub lid 6 is opened.

The control device 11 is composed of a microcomputer and comprises a control means 12 for sequentially controlling a series of steps of washing, rinsing and dehydration, and a motor 5, a drain valve 6, a water supply valve 13 and the like in response to signals from the control means 12. It includes a power switching means 14 for controlling, an input means 16 made up of a key switch arranged in the operation panel 15, a display means 17 made up of a display device such as a light emitting diode, and a nonvolatile storage means 18. The non-volatile storage means 18 is a storage means in which the stored contents are not erased even if power is not supplied, and can be written to and read from the control means 12. Incidentally, 19 is an AC power source, and 20 is a phase advancing capacitor of the motor 5.

In the above structure, when the setting of the dehydration operation is input by the input means 16 or the reed switch 8 is turned off when the dehydration process is entered in the fully automatic operation, the washing tub lid 6 is opened in the dehydration process. Because it is dangerous
In order to detect the lid opening abnormality by the lid opening detection means 10 and request the user to close the washing tub lid 6, the display "U12" indicating the lid opening abnormality is displayed on the display means 17 and the nonvolatile storage means. 18 was also written so that a history of abnormality detection was left. Here, the lid opening abnormality is taken as the case where the abnormality is detected, but other abnormality contents may be used. Further, the content stored in the non-volatile storage unit 18 need not be limited to the history of abnormality detection.

[0007]

In such a conventional configuration, when the non-volatile storage means 18 is used to store the history of abnormal contents, the non-volatile storage means 18 is initialized at the time of factory shipment. ing. However, for products etc. that have been readjusted from the production line, it may be inspected whether a lid opening abnormality can be detected. In such a case, the history of detecting the abnormality is written, and the nonvolatile storage means 1 is read again.
8 needs to be initialized. In such a case, an instruction is given to the control means 12 for controlling the non-volatile storage means 18 using an electric code.

That is, as shown in FIG. 5, the control means 1
The output unit 21 and the input unit 22 of No. 2 are connected using the diode 23, and when the control unit 12 is reset, the nonvolatile storage unit 18 is initialized by the control unit 12. However, there is a problem in that after the product is completed, it is necessary to disassemble the product in order to connect the output section 21 and the input section 22 of the control means 12 using the diode 23.

The present invention is intended to solve the above problems, and it is an object of the present invention to enable initialization of a non-volatile storage means without disassembling by using an input means even at the stage of completion as a product.

[0010]

In order to achieve the above-mentioned object, the present invention comprises a non-volatile storage means in which stored contents are not lost even if power is not supplied, and a control means for controlling the non-volatile storage means. An input means for giving an instruction to the control means is provided, and the control means is capable of initializing the non-volatile storage means by an instruction from the input means.

[0011]

According to the present invention, the non-volatile memory means can be initialized without disassembling by using the input means even at the stage of completion as a product by the above-mentioned problem solving means, and the time required for initialization can be shortened. can do.
In addition, the space for terminals for connecting electrical cords can be reduced, and the area of the printed wiring board can be reduced.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. The same components as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted.

As shown in the figure, the input means 21 includes a rinse switch 22, a dehydration switch 23 and a power switch 2.
4 to give an instruction to the control means 25 so that the control means 25 can initialize the stored contents of the non-volatile storage means 18 by an instruction from the input means 21. Further, the control means 25 is configured to sequentially control a series of steps of washing, rinsing and dehydrating.

The operation of the above-mentioned structure will be described with reference to FIG. If the power is not turned on, it is determined in step 32 whether the power switch 24 has been pressed. If the power switch 24 has been pressed, in steps 33 and 34, the rinse 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 rinse switch 22 or the dehydration switch 23 is not pressed, the nonvolatile storage means 18 is not initialized. After this, in step 36, the normal power switch 24
Is pressed and the power is turned on.

As described above, according to this embodiment, the input means 2
The non-volatile storage means 18 can be initialized by a special operation described in item 1, and the non-volatile storage means 18 can be initialized without disassembling by using the input means 21 even at the stage of completion as a product. The time required for initialization can be shortened.

In the above embodiment, the rinse switch 2 is used.
Although the nonvolatile memory means 18 is initialized when the power switch 24 is pressed while simultaneously pressing 2 and the dehydration switch 23, the nonvolatile memory means 18 is initialized in an unintended state in consideration of safety. This is because the non-volatile storage unit 18 is initialized by another operation using the input unit 21.

Further, in the above embodiment, the washing machine is described, but a dryer or a dishwasher can be similarly realized.

[0018]

As is apparent from the above embodiments, according to the present invention, a non-volatile storage means in which stored contents are not lost even if power is not supplied, and a control means for controlling the non-volatile storage means, An input means for giving an instruction to the control means is provided, and the control means can initialize the non-volatile storage means by an instruction from the input means, so that the input means is used even at the stage of completion as a product. Thus, the non-volatile storage means can be initialized without disassembling, and the time required for initialization can be shortened. In addition, 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 drawings]

FIG. 1 is a block diagram of a main part of a washing machine including a control device for a washing machine according to an embodiment of the present invention.

FIG. 2 is an operation flowchart of main parts of the control means of the washing machine.

FIG. 3 is a block diagram of a main part of a conventional washing machine including a control device such as a washing machine.

FIG. 4 is a sectional view of the washing machine.

FIG. 5 is a circuit diagram when initializing a non-volatile storage unit of the washing machine.

[Explanation of symbols]

 18 non-volatile storage means 21 input means 25 control means

Claims (1)

[Claims] 1. A non-volatile storage means that does not lose stored contents even if power is not supplied, a control means for controlling the non-volatile storage means, and an input means for giving an instruction to the control means. The means is a control device such as a washing machine capable of initializing the non-volatile storage means according to an instruction from the input means.