JPS6330677B2 - - Google Patents

Description

[Detailed description of the invention] (b) Industrial application fields The present invention relates to a coin-operated washing machine.

(B) Prior Art As a conventional example, a coin-operated washing machine that is operated by inserting coins of a set price is described in Japanese Utility Model Application Publication No. 151276/1983.

(c) Problems to be solved by the invention In the conventional example described above, the machine does not operate unless the same amount of coins are always inserted, regardless of the amount of laundry, which is inconvenient for the user. The situation was ripe.

SUMMARY OF THE INVENTION In view of these conventional problems, it is an object of the present invention to provide a coin-operated washing machine that takes into account the benefits of users.

(d) Means for Solving the Problems The coin-operated washing machine of the present invention includes a plurality of movable contacts in the water level switch that switch the contacts from the water supply valve side to the washing motor side depending on the water level, and
A relay contact that closes when a coin is inserted is connected to each movable contact, and the amount of coins inserted that causes each relay contact to open or close is made different.

(E) Effect: By making the water level different depending on the amount of coins inserted, for example, when washing a small amount of laundry with a small amount of water, the amount of coins inserted can be reduced.

(F) Embodiment An embodiment of the present invention will be described based on FIGS. 1 and 2.

1 is the first relay circuit, which is a 50 yen coin switch that temporarily closes the contact when a 50 yen coin is inserted.
and a first relay coil 3 connected in series with the switch, and when the relay coil is energized, a self-holding contact 4 connected in parallel with the coin switch 2 and a first relay contact 5. The second relay contact 6 and the third relay contact 7 are closed. 8 is a second relay circuit, which includes a 100 yen coin switch 9 that temporarily switches from a normally closed contact NC to a normally open contact NO when a 100 yen coin is inserted, a second relay coil 10, a third relay coil 11, etc. It is equipped with The second relay coil 10 is connected to the second relay coil 10 through the normally open contact 12 of the third relay coil 11.
It is connected to the normally closed contact NC side of the 100 yen coin switch 19, and when the relay coil 10 is energized, the fourth relay contact 13 is closed and the normally closed contact 14 is opened at the same time. Also, the third
The relay coil 11 is the second relay coil 10
It is connected to the normally open contact NO of the 100 yen coin switch through the normally closed contact 14 of
When the relay coil 11 is energized, the normally open contact 12
The self-holding contact 15, the fifth relay contact 16, and the sixth relay contact 17 are closed.

18 is a changeover switch used to change the set price of this coin switch mechanism, and 19 and 20 are first and second connectors for changing the wiring when changing the set price. 21 is a safety switch that opens the contacts when the top lid is opened, and 22 is a water level switch, which has three movable contacts L- that switches from normally closed contact NC to normally open contact NO when a predetermined amount of water is supplied to the washing tub. 1, L-2, and L-3. Therefore, one movable contact L among these three movable contacts
-1 switches when the water level is low, and the other movable contact L-2
is such that the contact is switched when the water level is medium, and the other movable contact L-3 is switched when the water level is high.The movable contact L-1 for low water level is connected to the second relay contact 6, and the movable contact for medium water level L-2 has the fifth relay contact 1
6 respectively, and the movable contact L- for high water level.
3, the third and sixth relay contacts 7 and 17 are connected in series. 23 is each movable contact L-1,
A timer motor is connected to the normally open contact NO side of L-2 and L-3, 24 is a drain valve, 25 is a washing motor, 26 is a hot water supply valve, and 27 is a water supply valve.

The operation of the above configuration will be explained. First, in order to make this device operate at 50 yen, put the changeover switch 18 to the contact A side, and connect the plug 19' of the first connector 19 and the jack 20'' of the second connector 20. In this state. When a 50 yen coin is inserted, the 50 yen coin switch 2 temporarily closes, and at that time, current flows through the relay coil 3, closing the self-holding contact 4, and even if the coin switch 2 opens, this relay coil 3 As the current continues to flow, the first relay contact 5 and the second relay contact 6.
Close the third relay contact 7. As a result, changeover switch 18 → first relay contact 5 → program contact
PTS-3 → 2nd relay contact 6 → Low water level movable contact L-1 → Its normally closed contact NC → Program contact
Electric current flows from PTS-4 to water supply valve 27, and the valve opens to supply water. When the water level in the washing tub reaches a predetermined low water level, the low water level movable contact L-1 switches from the normally closed contact NC to the normally open contact NO, cutting off the power to the water supply valve 27 and shutting off the timer motor 23 and the washing machine. The motor 25 is energized. As a result, the washing operation is performed according to the programming diagram shown in FIG.

Next, in order for this device to operate with 100 yen, set the changeover switch 18 to the contact B side and connect the plug 20' of the second connector 20 with the jack 20''. In this state, insert a 100 yen coin. Then, the 100 yen switch 9 temporarily closes the normally open contact NO, current flows through the third relay coil 11 and closes the self-holding contact 15, and the normally open contact 12, the fifth relay contact 16, and the sixth relay Contact 17 is also closed. When the coin passes through the input passage, the 100 yen coin switch 9 closes the normally closed contact NC again, so that the coin passes through the normally closed contact NC and the normally open contact 12, which is closed as described above. Current flows through the second relay coil 10 and closes the fourth relay contact 13. As a result, the B contact of the changeover switch 18 → the fourth relay contact 13 → the program contact PTS-3 → the fifth relay contact 16 →
The middle water level movable contact L-2→its normally closed contact NC→program contact PTS-4→water supply valve 27 is energized, and water is supplied from this valve. When the water level in the washing tub reaches a predetermined low water level, water level switch 2
The low water level movable contact L-1 of No. 2 switches, but it does not affect the water supply operation. When a predetermined middle water level is reached by water supply, the middle water level movable contact L-
2 is switched from the normally closed NC side to the normally open NO side, water supply is completed, and the timer motor 23 and washing motor 25 are energized to start washing.

In addition, in order to operate this device for 150 yen, the changeover switch 18 should be set to the contact A side, and the plug 19' of the first connector and the jack 1 should be connected.
9'' and second connector plug 20' and jack 2
0". When a 50 yen coin is inserted in this state, the first relay contact 5 closes as described above. If this continues, the fourth relay contact 13 is open, so no current will flow. Next, insert a 100 yen coin. When the switch is turned on, the fourth relay contact 13 closes in the order described above, and the A side contact of the changeover switch 18 → the first relay contact 5 → the fourth
Current flows through relay contact 13 → program contact PTS-3 → sixth relay contact 17 → third relay contact 7 → high water level movable contact L-3 → its normally closed contact NC → program contact PTS-4 → water supply valve 27 .
As a result, water is supplied to the washing tub and reaches a predetermined high water level.The high water level movable contact L-3 switches from the normally closed NC side to the normally open NO side, and the water supply is stopped and the timer motor 23 and washing motor 25 is energized and washing begins.

In addition, in this example, the user can use the same washing machine with 50 yen coins without changing the internal wiring.
Although it cannot be used with 100 yen coins,
The connection may be automatically changed by a relay that operates according to the amount of coins inserted.

(g) Effects of the Invention In the coin-operated washing machine of the present invention, the water level during washing changes depending on the amount of coins inserted, so it is possible to keep a number of washing machines with different amounts of coins inserted. For example, a user can use a washing machine that adjusts the water level to the amount of laundry, and if there is only a small amount of laundry to be washed, a small amount of coins can be inserted. can be provided.

[Brief explanation of the drawing]

FIG. 1 is an electrical circuit diagram of a coin-operated washing machine according to the present invention, and FIG. 2 is a programming diagram. 27...Water supply valve, 25...Washing motor, L
-1...Movable contact for low water level, L-2...Movable contact for medium water level, L-3...Movable contact for high water level, 22...
...Water level switch, 6...Second relay contact, 16...
...Fifth relay contact, 7...Third relay contact, 17
...6th relay contact.

Claims (1)

[Claims] 1. In a washing machine that operates by inserting coins at a set price, the water level switch is equipped with multiple movable contacts that switch the contacts from the water supply valve side to the washing motor side depending on the water level, and each movable side contact has A coin-operated washing machine characterized in that relay contacts that close when coins are inserted are connected, and the amounts of coins inserted that cause each relay contact to open and close are made different.