JPH05228294A - Operation display device for washing machine - Google Patents

Abstract

PURPOSE:To reduce the space of a display section and reduce the number of display LED elements by concurrently displaying a standard of the water level and detergent quantity with the same LED elements. CONSTITUTION:In the fabric quantity detecting process, a stirring blade 7 is rotated before water is fed, the counter electromotive force generated on a motor 15 when the washing motor 15 is turned off and the stirring blade 7 is rotated by inertia is detected via the terminal voltage of a motor drive capacitor, the counter electromotive force is converted into DC rectangular-wave pulses, and the interval between the pulses is measured to judge the cloth quantity. The water level and detergent quantity corresponding to the washing cloth quantity are set. When three LED elements 26 are lighted for a standard of the detergent quantity and water level, a water level display 25 indicates 45l, a cup display 24 indicates an overflowing heap as a standard of the detergent quantity, and the water level and detergent quantity can be concurrently indicated. The water level and detergent quantity are concurrently displayed with the same LED elements, the space of a display section is reduced, and the number of the LED elements can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laundry amount detecting function of a washing machine, and more particularly to a device for indicating a detergent amount by detecting the amount of laundry.

[0002]

2. Description of the Related Art Conventionally, in a washing machine, a function of detecting the amount of laundry by utilizing inertial rotation of a stirring blade and automatically determining and displaying a water level adapted to the amount of laundry has been general. .. In recent years, there has also been a technique in which the technique for detecting the amount of cloth is used to determine the amount of water by detecting the amount of cloth and display a guideline for the amount of detergent adapted to this amount of water.

[0003]

Conventionally, it is general to display the water level water amount and the standard amount of the detergent separately.
There is a problem that a large display unit is required, an LED element for display is also required individually, and the cost is high.

An object of the present invention is to solve the above problems.

[0005]

[Means for Solving the Problems] In order to achieve the above-mentioned object, a display that serves as both a water level display and a standard display of the amount of detergent is used.

[0006]

The amount of detergent is determined by the amount of water, and the water level and the standard of the amount of detergent can be simultaneously displayed by the same LED element.

[0007]

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

In FIGS. 2, 3 and 4, an outer tub 4 made of synthetic resin is vibration-supported by a suspension rod 2 and a vibration-proof spring 3 inside a box-shaped outer frame 1 made of steel plate. On the side wall of the outer tub 4, a rib 4a for attaching the suspension rod 2 and the vibration-proof spring 3 is formed. In the outer tub 4, a washing and dehydrating tub 5 having a substantially circular cross section and made of synthetic resin is provided. A balance ring 6 made of synthetic resin is attached to the upper end of the washing / dehydrating tank 5 by friction welding. A large number of vertical grooves 5a are provided at equal intervals on the side wall of the washing / dehydrating tub 5. A large number of dehydration holes 5b are provided in the vertical groove 5a. At the center of the inner bottom of the washing / dehydrating tub 5, a recess 5c for mounting a large wing 7 described later is formed. A large number of reinforcing ribs 5d are provided on the outer wall and outer bottom of the washing / dehydrating tub 5.
To form.

On the upper end of the outer tub 4, a tub cover 8 made of synthetic resin is fixed between the outer tub 4 and the washing / dehydrating tub 5 to prevent the laundry from falling. On the outer bottom of the outer tank 4,
The drainage device 9 and the drive device 10 for rotating the rotary vanes 7 and the washing / dehydrating tub 5 are attached via a support bracket 11 made of a steel plate. The support fitting 11 is, as shown in FIG.
It has a substantially box shape, and is fixed to the outer bottom portion of the outer tub 4 with a screw or the like.

The drainage device 9 includes a drainage valve 12 connected to the inner bottom portion of the outer tub 4, and a drainage hose 1 connected to the drainage valve 12.
3 and 3. The drain valve 12 is opened and closed by a lever 12b operated by a small synchronous motor 12a. The drain valve 12 is attached to the support fitting 11 with a screw 12c, as shown in FIG. The drain hose 13 extends outside the outer frame 1 through the lower portion of the side wall of the outer frame 1 or through the hole 14 provided in the PP base 3c1.

As shown in FIGS. 3 and 4, the drive unit 10 includes a washing machine motor 15, a clutch mechanism 16, a transmission mechanism 17 for transmitting the rotation of the washing machine motor 15 to the clutch mechanism 16, and a washing and washing machine. A brake device 18 for stopping the rotation of the dehydration tub 5 and a speed reduction mechanism 19 for decelerating the rotation of the washing machine motor 15 and transmitting the deceleration to the rotary vanes 7 are provided. As shown in FIG. 4, the washing machine motor 15 is fixed to the support fitting 11 with screws 15a.

The transmission mechanism 17 includes a first pulley 17a fixed to the rotating shaft of the washing machine motor 15 and the clutch mechanism 1.
Second pulley 17b arranged below 6 and belt 1 wound around first pulley 17a and second pulley 17b.
7c and. A fan 15b that cools the washing machine motor 15 is integrally formed with the first pulley 17a.

On the upper part of the outer frame 1, there is provided a top cover 21 having a clothing inlet at the center, a lid 22 at the center of the top cover 21, and an operation display section 23 on the front side.
The operation display unit 23 can display and switch between fully automatic courses such as standard and doronko, display and switch between manual courses such as washing and dehydration, and display and switch between detergent amount and water amount.

The operation display unit 23 is located inside the panel 33.
A controller unit 29 including a membrane SW 28 having an ED element 26 on its surface and a microcomputer board 30 and subjected to a moisture-proof treatment.
Is held with nails and the like. The thin sheet 32 is attached to the surface of the panel 33. Kazari sheet 32
When you press the SW part of, there is a rubber button 31 under it,
The SW section of the membrane SW28 is pushed, and the SW is input. Membrane SW 28 and controller section 29
Are connected by a cable, and the controller unit 29
The LED element 26 on the membrane SW 28 is turned on by the control of.

FIG. 5 is a block diagram of a microcomputer board. A microcomputer, a drive circuit is driven by the control of the microcomputer to drive a motor, a drain valve, etc., and a membrane SW.
Input and output of signals to and from the LED display circuit on 28 and the external operation input circuit.

In the above construction, when the clothes are put in and the fully automatic course is selected and started, the cloth amount detecting step is started. In the cloth amount detecting step, the stirring blade 7 is rotated before water is supplied, and the counter electromotive force generated in the motor 15 when the stirring blade 7 is rotated by inertia when the washing motor 15 is deenergized is used as a motor driving capacitor ( It is detected by a terminal voltage (not shown), converted into a DC rectangular wave pulse, and the time between the pulses is measured to determine the cloth amount.

That is, when the amount of laundry is large, the inertial rotation is large because the resistance to the stirring blade 7 is large, and the time between pulses is long, and when the amount of laundry is small, the time between pulses is short. This time is compared with the relationship between the laundry amount and the time stored in advance in the microcomputer to determine the laundry amount, and the water level and the detergent amount are automatically set according to the laundry amount. The amount of detergent is proportional to the water level, and the amount of detergent is automatically determined when the water level is determined.

As a guideline for the amount of detergent and the amount of water on the operation display unit 23, when the three LED elements 26 are lit, the amount of water 2 is displayed.
No. 5 45L is displayed, and the heap of the cup display 24 is displayed as a standard of the detergent amount, so that the water amount and the detergent amount can be expressed at the same time.

The operation display section 23 will be described in more detail. As shown in FIGS. 6 and 7, the panel 33 facing the LED element 26 has an opening. A circular transparent portion is formed in the portion of the calylate 32 facing this opening. Other parts are opaque. The light of the LED element 26 can be seen from the outside of the operation display section through the opening and the transparent section. The LED elements 26 are arranged vertically in three lines on the display of the amount of detergent and the amount of water. It is provided corresponding to the levels of 45L, 39L, and 32L. LED on the display of the manual course
Three elements 26 are arranged laterally. Three LED elements 26 are laterally arranged in the display section of the fully automatic course. There are 4 LED elements 26 inside the start / pause button.
It is arranged. When the amount of detergent / water is 45 L, the three LED elements 26 are turned on. At 39 L, the two LED elements 26 are turned on except for 45 L. At 32 L, only one of the 32 L lights up. The LED element at 32L flashes at a water level lower than 32L. Where the three LED elements 26 are displayed, a cup-shaped pattern and a pattern indicating the amount of detergent are drawn. This pattern is drawn on the sheet 32. It can be understood from the pattern that the amount of detergent needs to be piled up on the measuring cup when the amount of water is 45 L (high water level). It can be understood that when the amount of water is 39 L (medium water level), the amount of detergent is about the same as that of the measuring cup, and when the amount of water is 32 L (low water amount, the amount of detergent is about half in the measuring cup.

Normally, the amount of detergent and the amount of water are automatically displayed by lighting the LED element 26 by automatic sensing of the amount of cloth, but can be changed by the user's intention. It can be changed arbitrarily by pressing the push button of the external operation input circuit located just to the right of the cup pattern.

Regardless of whether it is manual or automatic, the amount of water indicated in the amount of water indicated is supplied. Therefore, by adding the amount of detergent that matches the cup pattern, the amount of detergent that matches the amount of water can be adjusted. Will disappear.

The display of the manual course has two display functions. One is a switching display of only the washing process, only the dehydration rinsing process, and only the drainage dehydration process. The other is a progress indicator. The switching display can be arbitrarily selected by pushing the push button of the external operation input circuit on the lower side. The progress display is performed by blinking the LED element 26 during the process in progress.

When washing is performed from washing to dehydration, the three LED elements 26 are turned on. When the operation is started, the wash area blinks and the other two remain lit. At the end of the washing process, the LED element 26 at the washing point turns off, the LED element 26 at the rinsing point blinks, and the other LED element remains lit. When the rinsing step is completed, the rinsed LED element 26 is turned off and the dehydrated LED element 26 blinks. After dehydration, L of dehydration
The ED element 26 is turned off.

The display of the fully automatic course can be arbitrarily changed between standard, dronko, and hand wash by pressing a push button.

When the power switch is turned on, the standard of the fully automatic course is displayed (LED element 26 is lit) and the start / pause button is displayed (LED element 26 is lit).
To be done. When the start / pause button is pressed, the amount of cloth is sensed, and when the amount of cloth is sensed, the amount of detergent and the amount of water corresponding to the amount of cloth are displayed. At the same time, three LED elements 26 are turned on for the manual course display. When the water supply is completed, the washing operation is started and the LED element 26 for washing blinks.

[0026]

According to the present invention, the amount of water level and the amount of detergent can be determined by detecting the amount of cloth, and the same LED element can be used to display both the amount of water level and the amount of detergent. There is little space, and the number of LED elements for display can be small.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention.

FIG. 2 is an external perspective view of the washing machine.

FIG. 3 is a vertical sectional view of the washing machine.

FIG. 4 is a bottom plan view of the washing machine.

FIG. 5 is a circuit diagram.

FIG. 6 is a sectional view taken along the line VI-VI ′ of FIG.

7 is a sectional view taken along line VII-VII ′ of FIG.

[Explanation of symbols]

 23 ... Operation display part, 26 ... LED element.

Claims (1)

[Claims] 1. A washing machine having means for detecting the amount of laundry to be washed, a display function for displaying the water level by the detection of the amount of laundry, and a display function for displaying an indication of the amount of detergent by the detection of the amount of laundry. An operation display device for a washing machine, which has a water level display function and a detergent amount guide display function.