JPH02237594A - Full automatic washing machine - Google Patents

Abstract

PURPOSE:To enable the collision of a water receiving tank with an outer box due to the swing of the tank with high accuracy by measuring an impact value of the water receiving tank and outer box with a collision detecting means in the swing of the water receiving tank due to the offset of a cloth in the early dehydration. CONSTITUTION:A dehydrating tank 10 is received in a water receiving tank 8, while the water receiving tank 8 is received in an outer box 1. Also, a pressure sensor 19 is mounted on the inner surface of the outer box 1 or water receiving tank 8. Further, a collision detecting means 20 detects an impact force through the pressure sensor 19 when it collides with the outer box 1 or water receiving tank 8. Also, an abnormality judging means 22 receives the signal of a collision detecting means 20 to output an abnormality signal. The abnormality judging means 22 outputs the abnormality signal when an impact value and the number of times of collision from the collision detecting means 20 exceed predetermined values. As a result, the collision due to the swing of the water receiving tank can be detected with high accuracy.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a fully automatic washing machine used in general households.

2. Description of the Related Art A conventional fully automatic washer has a configuration as shown in FIG. In the figure, %1 is an outer box, and the upper part of this outer box is covered by an upper frame 2.

Furthermore, legs 3 are provided at the bottom of the outer box 1. At the rear of the upper frame 2, an operation panel 4 housing a control section is disposed, and a central opening of the upper frame 2 is covered with a lid 6 so as to be openable and closable. On the other hand, inside the outer box 1, a water tank 8 is suspended by a rod 9 in a vibration-proof manner. Inside the water receiving tank 8, a washing and dehydrating tank (hereinafter referred to as a dehydrating tank) 1o is rotatably arranged, and a bowser 11 is attached to the upper part of the tub. A stirring blade 12 is disposed at the inner bottom of the dehydration tank 1o, and the stirring blade 12 is rotated by the belt 16 when the motor 14 rotates.
．． The signal is transmitted via the deceleration drive section 13. On the other hand, a safety switch is provided in the operation panel 4, and an operating lever 6 for operating the safety switch 7 extends downward, and a water receiving tank 8 is provided.
It is designed to operate when the machine is whirling around. 16 is a drain valve, 17 is a cock, and 18 is a drain hose.

With the above configuration, a series of courses starting from washing is run, but if the fabric is uneven during washing, it will
The water tank 8 swings around and hits the outer box 1. At this time,
If the water tank 8 swings around a lot and hits the outer box 1 with a thud, the safety switch 7 will be activated, and the process will begin by refilling the water and washing again to loosen the fabric. Ta.

Problems to be Solved by the Invention In the above configuration, the actuating lever 6 of the safety switch 7 is located between the water tank 8 and the outer box 1, and in order to detect the swinging vft of the water tank 8, the operating lever 6 of the safety switch 7 is located between the water tank 8 and the outer box 1. When the receiving tank 8 does not hit the inner surface of the outer box 1, or when the outer box 1 lightly hits the outer box 1 due to a small piece of cloth, the safety switch 7 may be activated. That is, the safety switch 7 is operated by the operating lever e.
is pushed toward the outer box 1 side by the side surface of the water receiving tank 8, and it operates when the pushed width exceeds a predetermined width. In addition, depending on the position of the fabric offset flap in the dewatering tank 10, the contact of the water tank 8 with the operating lever 6 varies slightly, and it is possible to accurately prevent the water tank from colliding with the inner surface of the outer box 1. The problem was that it could not be detected.

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to detect collisions caused by swinging of a water tank with high accuracy.

Means for Solving the Problems In order to achieve the above object, the present invention includes a pressure sensor attached to the outer case of the washing machine or the inner surface of the water tank, and this pressure sensor to prevent the outer case or the water from flowing when the cloth is on one side. It is equipped with a collision detection means that detects the full impact force that collides with the receiving tank, and an abnormality determination means that inputs the signal of this collision detection means and outputs an abnormality signal, and the abnormality determination means detects the impact value from the collision detection means. and when the number of collisions is greater than a predetermined value. It outputs an abnormal signal.

Function According to the above configuration, the shock value between the water container and the outer box is measured by the collision detection means at 9 o'clock when the water container swings due to the cloth being shifted to one side in the initial stage of dewatering, thereby achieving the same function as a conventional safety switch. can be made to

Moreover, since it detects direct collision with the outer box or water tank, detection accuracy can be dramatically improved.

Embodiment An embodiment of the present invention is shown in FIGS. 1 and 2. This will be explained using FIG. First, the overall structure of the washing machine will be explained with reference to FIG. In addition, the same parts as the conventional configuration are given the same reference numerals.
The explanation will be omitted. As shown in the figure, the features of the present invention are as follows:
A pressure sensor 19 is attached to the inner surface of the outer box 1. Further, as shown in FIG. 1, a collision detection means 20 is provided for exchanging the pressure detected by the pressure sensor 19 into an electrical signal. The strength of the collision is sent as a signal to the pressure value input section 21 in the collision detection means 20ij control section 24.

Check whether the value input to this pressure value input section 21 exceeds the set value, or even if it is lower than the set value.
An abnormality determining means 22 determines how many times the water tank 8 has collided with the outer box 1 and has not exceeded the set number of times. The result determined by the abnormality determining means 22 is outputted by the output section 23. When the abnormality determining means 22 determines that the set value and the set number of times have been exceeded, the motor 14, the drain valve 1
It sends signals to electrical components such as 6th class. Pressure value input section 21
, the control section 24 is isolated from the abnormality determining means 22 and the output section 23.

The operation of the above configuration will be explained based on the flowchart of FIG. When dehydration is started, the output section 2 of the control section 24
3, the output is sent to the motor 14 and the drain valve 16, and the dewatering tank 1
0 starts rotating. At this time, if the cloth is lopsided or the installation surface is slanted, the water receiving tank 8 will hit the outer box 1. The collision at this time is detected by the pressure sensor 19.
When the value is 0, it is input to the pressure value input section 21 as an electrical signal. Assuming that this input value is X, it is determined in the abnormality determining means 22 whether or not X is thicker than the set value ▲.

When X is equal to or greater than ▲, a signal is output from the abnormality determining means 22 to stop the output from the output section 23, and the motor 14 and the drain valve 16 are stopped. After that, the machine refills with water, completes the washing process, loosens the fabric, and then returns to dehydration. If X is smaller than A, it is determined whether this X is also larger than set value B. If X is greater than or equal to B, it is determined whether the number of collisions n of the water tank 8 with the outer box 1 is greater than or equal to N times. If the number of times is N or more, the abnormality determining means 22 outputs a signal to stop the output from the output section 23, the motor and the drain valve 16 are stopped, and the process returns to the dewatering process as described above. If it is less than N times, abnormality determination means 2
It is determined that the dehydration is normal, and a signal is output to the output unit 23 so that the output remains as it is, and the motor 14 and the drain valve 16 continue in the same state. At this time, the clock 26 simultaneously determines whether the detection time t has exceeded the set dehydration time T. When the detection time t is equal to or greater than the set dehydration time T, the dehydration time is over and the clock 26
A signal is output to the output section 23 to stop the output. If the detection time t is smaller than the set time T, the collision detection means 20 repeatedly sends a signal to the pressure value input section 21 and the abnormality determination means 22 until the detection time t reaches the set dewatering time T. . If X is smaller than the set value B, the abnormality determining means 22 determines that dehydration is normal, and a signal is output to the output section 23 so that the output remains as it is, and the motor 14 and drain valve 16 remain as they are. Continue the state. At this time too,
The clock 2β determines whether the detection time t and the set dehydration time T have been exceeded.

In the above example, the pressure setting values are set to ▲ and B, and if it is above A, it will stop immediately, and between ▲ and B, it will be determined whether to stop depending on how many times there are collisions, and if it is smaller than B, it will stop immediately. The dehydration continues, but it is also possible to increase the effect even more by setting many settings between the two people and B.

In the above embodiment, the pressure sensor 19f is attached to the outer box 1, but the pressure sensor 19f may also be attached to the inner surface of the water tank 8, or the pressure sensor 19 may be attached at multiple locations. By doing so, it is possible to achieve even greater effects.

Effects of the Invention As is clear from the above embodiments, according to the present invention, the swinging of the water tank due to the unevenness of the cloth after the start of dewatering can be prevented.
To provide a fully automatic washing machine with stable quality by determining whether or not there is an abnormality based on the impact value and the number of times the impact hits the outer box with high precision. be able to.

[Brief explanation of drawings]

Fig. 1 is a block diagram of a fully automatic washing machine showing an embodiment of the present invention, Fig. 2 is a cross-sectional view of the same, Fig. 3 is a flowchart showing the control details, and Fig. 4 is a block diagram of a fully automatic washing machine of the prior art. FIG. 1...Outer box, 8...Water tank, 19.
... Pressure sensor, 20 ... Collision detection means, 22 ... Abnormality determination means. Name of agent: Patent attorney Shigetaka Awano and 1 other person
t Figure 24-III Part a/'--Dato Box 8 -Isui Chu +ym l9I Press length and nbu

Claims (1)

[Claims] A water tank that houses a dewatering tank, an outer box that houses this water tank, and a pressure sensor attached to the outer box or the inside of the water tank.This pressure sensor measures the impact force when it collides with the outer box or water tank. The abnormality determination means includes a collision detection means for detecting a collision, and an abnormality determination means for inputting a signal of the collision detection means and outputting an abnormality signal, and the abnormality determination means is configured to detect a collision when the impact value from the collision detection means and the number of collisions are greater than a predetermined value. A fully automatic washing machine that outputs an abnormal signal when