JPH0646431B2 - Coin operated washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a coin-type washing machine.

(B) Conventional Technology A conventional example is disclosed in JP-A-60-163690. This is a coin-type washing machine that starts operation when the coin insertion amount reaches a set amount, and has a coin detection switch that operates when a coin passes through, and an informing unit that informs of an abnormality. When the signal from the coin detecting switch continues for a predetermined time before the coin insertion amount reaches the set amount, it is operated immediately.

(C) Problems to be Solved by the Invention In the conventional example, when the signal from the coin detection switch is continuously input for a predetermined time before reaching the set amount, the coin storage box is full and the coin is in the middle. In addition to being caught, it is conceivable that the user has come up with an illegal operation and is trying to operate the switch with a wire or the like.

In the latter case, when the user is surprised (noticed) by the notification operation and converts and inserts a regular coin,
In the conventional example, since the coin is not measured and the washing machine does not operate, the coin is wasted, causing a problem between the user and the administrator.

The present invention relates to improvement of a coin-type washing machine, and solves such a problem.

(D) Means for Solving the Problems The coin-type washing machine of the present invention measures a coin detection switch that operates when a coin is inserted, and measures the amount of money inserted according to an operation signal of the coin detection switch, When the set price is reached, a microcomputer that sends drive signals to motors, valves, etc. to automatically operate a program consisting of a series of processes such as water supply, washing, drainage, etc. And the microcomputer, when the operation time of the coin detection switch is longer than a reference value, determines that there is an abnormality, drives the notifying unit, and during the notifying operation, the coin When the normal operation signal of the detection switch is input, the driving of the notifying means is stopped and the amount of money to be inserted is measured, thereby solving the above-mentioned problems. .

(E) Operation That is, when there is an illegal operation by a wire or the like, the coin detection switch operates for a long time, so an abnormality is notified according to the operation time.

Further, when the user reforms and inserts a regular coin during the abnormality notification, the coin is measured as the inserted amount and the washing machine is returned to the normal operation state.

(F) Example An example of the present invention will be described with reference to the drawings.

FIG. 3 is a front view of the coin-type washing machine, where 1 is a machine frame and 2
Is an operation box, and the front panel 2a has a coin of 50 yen and 10
Coin insertion openings 3 and 4 for inserting 0-yen coins, remaining time, amount display section 5, and process progress display section 6 are provided.

FIG. 4 shows a block circuit diagram of the control unit, 7 is a microcomputer (hereinafter referred to as a microcomputer) which is the center of control, and 8 is a reset signal generation circuit which operates at power-on to clear the data in the RAM. Is. Reference numeral 9 is a price setting switch, which determines the amount of money to be put in advance, and after the power is turned on, the microcomputer 7 judges the signal from the switch 9 and stores it in the RAM as the set price. Reference numeral 10 denotes a forced operation switch, which is provided in a place where the user of the washing machine cannot easily operate it, and is for an operation test at the manufacturing stage. When operated, a predetermined or a series of steps are automatically executed. Reference numeral 11 is a 50-yen coin detection switch that outputs a signal when a 50-yen coin is inserted from the coin-insertion opening 3 for the 50-yen coin, and 12 is a 100-yen coin inserted from the coin-insertion opening 4 for a 100-yen coin. A 100-yen coin detection switch that outputs a signal, 13 is a group of various safety switches, 14 is a motor right rotation drive circuit, 15 is a motor left rotation drive circuit,
Reference numeral 16 is a drainage solenoid valve drive circuit, and 17 is a water supply solenoid valve drive circuit. Each of the drive circuits 14 to 17 includes a microcomputer 7
Drive circuit 1 when a signal is output to the output ports A to D of
It is activated via 8 to 20. 21 is an automatic detergent injection device.

FIG. 5 shows a specific circuit, 22 is a drive motor, and 23
Is a water supply solenoid valve, 24 is a drainage solenoid valve, 25-28 are bidirectional thyristors for controlling these operations based on signals from the microcomputer 7, 29 is a drive for driving the display portions 5, 6. Circuit.

30 is a DC voltage V necessary for operating the microcomputer 7.
A constant voltage circuit for obtaining DD, 31 is a backup capacitor for holding the data of the memory RAM in the microcomputer 7 when the AC power supply is cut off, and 32 is a diode 33 from the constant voltage circuit 30 when the AC power supply is energized. A charging resistor for limiting a current for charging the capacitor 31 via a resistor 34 is a comparison circuit for comparing a backup voltage V2 with a reference voltage V3 obtained by dividing the constant voltage V1 by resistors R1 and R2. When the AC power supply is cut off), V1 decreases and V2> V3, so that the comparison circuit 34 outputs H
The IGH signal is input to the microcomputer 7. When the microcomputer 7 receives this HIGH signal, it stops its operation and stands by while holding the contents of the RAM. Thus, when the power is restored from the power failure, the state before the power failure is continued. In the present embodiment, this is also performed during the trial run by operating the forced operation switch 10.

The operation based on such a configuration will be described with reference to the flowcharts of FIGS. 1 and 2.

In Fig. 1, Mo is the amount charged, M1 is the amount required to start washing (200 yen), M2 is the additional amount required to automatically add detergent (50 yen), and Ta is water supply. Elapsed time from the start time, Tb is a predetermined time (1 minute).

First, the user inserts a coin to wash. When the input amount Mo reaches M1 (200 yen), the microcomputer 7 starts water supply according to a series of washing programs. The microcomputer 7 measures the elapsed time To after the water supply is started, and whether or not the amount M2 (50 yen) for adding the detergent is added when Ta reaches the predetermined time Tb. If it is added (M
For o ≧ M1 + M2), the detergent is automatically added immediately. If not added (Mo <M1 + M2), the process is continued without adding detergent. Then, after the lapse of the predetermined time Tb, the detergent is added at the time when the amount M2 is added.

Next, FIG. 2 shows detection and operation of tampering with coin jam and wire.

The microcomputer 7 checks the input operation time T of the 50-yen and 100-yen coin switches 11 and 12,
Is 0.03 seconds ≤ T <1 second, normal coin insertion, 1 second ≤
If T <10 seconds, an illegal operation by a wire or the like is determined, and if 10 seconds ≦ T, it is determined that the coin is jammed. Description will be given below with reference to the drawings. In addition, the figure shows that the set amount of washing start is 200 yen,
It is assumed that two 100 coins will be inserted.

First, the microcomputer 7 sets the time T1 measured for the first time.
However, if 0.03 seconds ≦ T1 <1 seconds, it is determined that a normal coin is inserted (S-1), and the second time measurement is prepared.

If the time T is 1 second ≦ T1 <10 seconds (S-2), it is determined that the operation is illegal due to a wire or the like, and all the display portions 5 and 6 are blinked to display an abnormality. This abnormal display is performed for 1 minute, and the initial state is returned when 1 minute has elapsed. Further, when a signal is newly input from the coin switches 11 and 12 within this one minute, the time T2 is measured and 0.03 seconds ≦ T.
If 2 <1 second (S-3), it is determined that a regular coin has been inserted, and the abnormal display is canceled to prepare for the second time measurement. When the times T1 and T2 are 10 seconds or more, it is determined that the coin is jammed, and the abnormality display is continuously performed until the repair is completed.

Now, in the second time measurement, the time T3 is 0.0
If 3 seconds ≤ T3 <1 second (S-4), it is determined that the set amount of money has reached 200 yen, and water supply is started according to the program. If the time T3 is 1 second ≦ T3 <10 seconds, the same abnormality display as in (S-2) above is displayed. Also, time T3
If is more than 10 seconds, perform all steps for the time being,
When it is finished, a continuous error display is displayed.

In addition, it is preferable in terms of management and crime prevention to use an alarm device by a buzzer as the abnormality display means.

(G) Effect of the Invention The coin-type washing machine of the present invention is excellent in crime prevention because it detects an illegal operation by a wire or the like and reports an abnormality.

Further, when the user reforms and inserts a proper coin during the abnormality notification, the abnormality notification is stopped and the inserted amount is measured, so that the coin is not wasted and a trouble between the user and the administrator occurs. Will not trigger.

[Brief description of drawings]

FIG. 1 is a flow chart for explaining a detergent insertion operation in the coin-type washing machine of the present invention, FIG. 2 is a flow chart for explaining a coin detecting operation, FIG. 3 is a front view of the coin-type washing machine, and FIG. A block circuit diagram of the control unit and FIG. 5 are specific electric circuit diagrams. 5, 6 ... Display unit (informing means), 7 ... Microcomputer, 11, 12 ... Coin detection switch.

Claims (1)

[Claims] 1. A coin detection switch which is activated when a coin is inserted, and an insertion amount is measured according to an operation signal of the coin detection switch, and when a set price is reached, water supply, washing, drainage, etc. A microcomputer for sending a drive signal to a motor, a valve, etc. to automatically operate a program consisting of a series of steps, and an external notification means composed of a buzzer, a display, etc. When the operation time of the coin detection switch is longer than the reference value, it is determined to be abnormal, and while driving the notification means, during the notification operation, when a normal operation signal of the coin detection switch is input, A coin-type washing machine configured to stop driving of the notification means and measure an amount of money to be inserted.