JPS594370Y2 - Vending machine control circuit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vending machine having a timer circuit that stops a vending operation if a predetermined vending operation is not performed.

Generally, if the shape and size of the product differs, or if the product delivery device used to deliver the product differs, the time required for sales will naturally vary.

Therefore, in a vending machine that has multiple columns for storing products, when using the above-mentioned timer circuit, in order to prevent continuous sales (free bend state) in the event of a malfunction, the timer is set to the longest sales time. For columns that have delivery devices that require the shortest sales time, the role of the timer circuit may not be fully utilized.

In view of the above points, it is an object of the present invention to provide a control circuit for a vending machine that is capable of setting a timer time suitable for the sales time of the column even if the sales time differs depending on the column.

An embodiment of the present invention will be described below in detail based on the drawings.

1.2 is an AC power line.

Reference numeral 3 denotes a money sorting and counting device, which determines the authenticity of the coins inserted and counts the amount of coins inserted.Sale enable signal output terminal 0, which outputs a sell enable signal based on acceptance of a predetermined amount.・・It has an input terminal ■ that inputs the On and sales start signal, and when the sales start signal is input, the output terminal 0□...
・It is configured to stop outputting the sell-ready signal from ON.

4□...4n is coil 4a switch 4b, 4C, 4d
, 4e, each product selection switch 61
... 6n, one end of the coil 4a is connected to the output terminal 01...On of the currency sorting and counting device 3, and the other end is connected to the output terminal 01...On of the currency sorting and counting device 3, and the other end is connected to the output terminal 01...On of the currency sorting and counting device 3, and the other end is connected to the output terminal 01...On of the currency sorting and counting device 3, and the other end is connected to the output terminal 01...On of the currency sorting and counting device 3, and the other end is connected to the output terminal 01...On of the currency sorting and counting device 3. It is connected to the b contacts of the product selection switches 6□...6n.

Further, the a contacts of the selection switches 6□...6n are connected to the power supply line 2.

The control relay 7 has a coil 7a, switches 7b and 7C, and a capacitor 8 is connected in parallel with the relay to form a delay circuit for the relay.

One end of the coil 7a of the control relay 7 is connected to the power supply line 1 via a resistor 9 and a diode 10, and the other end is connected to the C of each switch 4b of the selection relays 4n...41.
It is connected to the power supply line 2 via a contact.

11 is a reset relay having a coil 11a and a switch 11b; one end of the coil 11a is connected to the b contact of the reset switch 12, and the other end is connected to the power line 2.

The reset switch 12 is connected to the power supply line 2 through a capacitor 13, and the C contact of the reset switch 12 is connected to the power supply line 1 through a resistor 9 and a diode 10.

When the reset switch 12 is switched from the C contact to the B contact, the reset relay 11 is energized for a predetermined period of time by the discharge of the capacitor 13.

14 is a timer circuit, one power input terminal T1 is connected to the C contact of the switch 7b of the control relay 7, the other terminal T2 is connected to the power line 2, and when the control relay 7 is demagnetized, This configuration is such that the timer circuit 14 is energized.

15□ and 15n are time constant setting resistors whose one end is connected to the terminal T3 of the timer circuit 14, and the other end of the resistor 15□ is connected to the a of the switch 4e of the selection relay 4□, which is also connected to the terminal T4. The other end of the resistor 15n is also connected to the terminal T4, and the switch 4e of the selection relay 4n is connected to the contact point.
are connected to the a contacts of the selection relays 4□, 4, respectively.
This is a configuration that is added when any one of n is excited.

Incidentally, since the sales operation time of the product storage column corresponding to the selection switch 6□ is shorter than the sales operation time of the column corresponding to the selection switch 6n, the time constant setting resistor 15,
should be set smaller than the resistance 15n.

Reference numeral 16 denotes a timer relay connected between terminals T5 and T6 of the timer circuit 14, which is energized after a predetermined time period that is longer than a preset sales operation time for each column.

Further, the C contact of the switch 7C of the control relay 7 is connected to the input terminal I of the money sorting and counting device 3, and by demagnetizing the control relay 7, a sales start signal is sent to the sorting and counting device 3, and a sales ready signal is sent. This is to erase the .

17□ and 17n each have one end connected to the C contact of switch 16a of the timer relay 16, and the other end connected to the B contact of switch 4d of selection relay 4, and the B contact of switch 4d of selection relay 4n, respectively. This is a product delivery device that is connected to the power supply line 1.

and the sending device 17. , 17H or by the product sold by any of the sending devices 17□, 17n.
This is a configuration that operates.

Next, the operation of the above configuration will be explained.

First, to explain the normal sales operation, when waiting for customers,
Control relay 7 is power line 1 - diode 1 - resistor 9
- Coil 7a - Switch 4b of selection relay 4n - Switch 4b of selection relay 4□ It is energized by the closing of power supply line 2, and capacitor 8 is also charged.

Here, when a predetermined amount of money is put into the money sorting and counting device 3, a sellable signal is output from the output terminals 0□...On of the counting device 3, and this state is a sales waiting state.

Here, when the selection switch 6□ corresponding to the storage column with short sales time is operated, the output terminal 0□ of the counting device 3 is operated.
-Coil 4a-Sold out switch 5□-Selection switch 6□-
When the power line 2 is closed, the selection relay 4 is energized, and the switch 11b of the power line 1-reset relay 11 is energized.
- Switch 4C - Coil 4a - Switch 4b - Self-maintaining by closing power line 2.

Then, the control relay 7 becomes de-energized, and the capacitor 8
Demagnetize after discharging.

Also, by energizing the selection relay 4□, the switch 4
The product delivery device 17□ is energized via the b contact of d and starts the product delivery operation.

On the other hand, as the control relay 7 is demagnetized after the capacitor 8 is discharged, a sales start signal is input to the input terminal I of the counting device 3 through the C contact of the switch 7C, and the output terminal 0
□...Stop outputting the sellable signal from On.

Similarly, by demagnetizing the control relay 7, the power line 1 - the C contact of the switch 7b - the timer circuit 14 - the power line 2
When the circuit is closed, the timer circuit 14 is energized, and a capacitor (not shown) of the timer circuit 14 starts charging via the switch 4e of the selection relay 4 and the time constant setting resistor 15□.

When the product delivery device 17□ delivers the product to a sales outlet (not shown) within a preset predetermined time, the reset switch 12 is temporarily changed to a C contact by the product or the delivery device 17□.

Therefore, the capacitor 13 is charged by closing the power line 1 diode 10, the resistor 9, the reset switch 12, the capacitor 13, and the power line 2.

When the reset switch 12 is reset, the capacitor 13 is discharged and the reset l-IJ tray 1 is energized for a predetermined period of time.

Then, the self-holding of the selection relay 4□ is released and demagnetized.

Therefore, by demagnetizing the selection relay 4□, the product delivery device 171
stops operating, and the control relay 7 is energized again to end the sales operation and enter the customer waiting state.

By energizing this control relay 7, the switch 7
b changes to a b contact, the timer circuit 14 becomes de-energized, and the timer relay 16 stops operating without being energized.

Next, the operation due to a failure of the product delivery device will be explained.

When the selection switch 6 □ is operated as described above in the sales waiting state where the sale ready signal is output from the output terminals 0□...On of the currency sorting and counting device 3, the selection relay 41
is excited and self-holding.

Therefore, power line 1 - switch 4d - product delivery device 17
1-switch 16b-power line 2 is closed, the product delivery device 171 is energized.

In addition, the control relay 7 is de-energized by the selection relay switch 4b, and due to demagnetization after a delay by the capacitor 8, the power line 1 - switch 7b = timer circuit 14 - power line 2 is closed, and the timer circuit 14 is energized. In the timer circuit 14, a capacitor (not shown) starts charging via the switch 4e of the selection relay 4 and the time constant setting resistor 151.

At this time, a sales start signal is input to the input terminal (2) of the counting device 3 via the switch 7C of the control relay 7, and the output of the sales enable signal is stopped.

If the delivery device 17□ is unable to send out the product due to some kind of malfunction, the timer circuit 1
4 terminal T5. T6 outputs and timer relay 16 is energized.

By energizing the relay 16, the energizing circuit of the product delivery device 17, that is, the power supply line 1 - switch 4d - delivery device 17, -
The closed circuit between the switch 16b of the timer relay 16 and the power supply line 2 is opened, and the drive of the product delivery device 17□ is stopped, so that the sales operation is stopped.

Next, an explanation will be given of the operation when the sellable signal from the money sorting and counting device is not outputted due to some kind of failure.

This time, the product delivery device 17 corresponding to the selection switch b1
The operation of the product delivery device 17H, which requires a longer sales operation time than the sales operation time □, will be described. First, when the selection switch 6n is operated in the sales waiting state, the selection relay 4n is energized and self-holding.

Therefore, the product delivery device 17n starts the product delivery operation.

Furthermore, the control relay 7 is delayed and demagnetized by the energization of the selection relay 4n, and the timer circuit 14 is energized, and a capacitor (not shown) of the timer circuit 14 is charged via the switch 4e of the selection relay 4n and the time constant setting resistor 15n. begins to be

A time constant setting resistor 15 which is a charging resistance of the capacitor
Since n is larger than the other time constant setting resistor 15, the timer setting time is longer.

At this time, a sales start signal is input to the input terminal ■ of the currency sorting and counting device 3, but due to a malfunction, the output terminal 0□...
- The sellable signal from ON remains output.

On the other hand, when the product is delivered to the sales outlet by the product delivery device 17H, the reset switch 12 is operated by the product or the delivery device 17H, and the switch 12 is temporarily changed to a C contact, so that the capacitor 13 is charged. be done.

When the reset switch 12 returns, the capacitor 13 is discharged and the reset relay 11 is energized, so that the power line 1 - switch 11b - switch 4C of selection relay 4n - switch 4b - switch 4b of selection relay 4□ - power supply The self-holding circuit of the selection relay 4n, which is the closed circuit of the line 2, is opened, but since the sellable signal continues to be output from the output terminal On of the currency sorting and counting device 3, the selection relay 4n is not demagnetized, and therefore the product is not sold. Sending device 17
n is continuously energized.

However, after the set time elapses after the normal sales operation time, the terminals T3 and T4 of the timer circuit 14 output and the timer relay 16 is energized. The circuit of switch 4d, sending device 17n, switch 16b of timer relay 16, and power supply line 2 is opened, and the sales operation is stopped.

As described above, the present application is provided with a timer circuit that operates based on the excitation of the selection relay and whose time constant can be changed by the selection relay. A suitable timer for one hour
Can be set using multiple timer circuits.

Conventionally, when the vending machine has multiple storage columns for storing products, because the vending operation time naturally differs depending on the size and shape of the product or the type of product delivery device, However, the role of the timer circuit could not be fully demonstrated because the one-hour timer was set for the sending device with the longest sales operation time.However, the present invention has set one hour timer suitable for each sales operation time. Since it can be reliably set using a timer circuit, it can be successfully implemented at low cost and sales can be stopped with certainty.

[Brief explanation of drawings]

The figure shows an electrical circuit diagram of the control circuit of the present invention. 3... Money sorting and counting device, 4□...4n... Selection relay, 6□...6n... Selection relay, 12...
Reset switch, 14... Timer circuit, 151.
...15 n...Resistance for time constant setting, 17□...1
7n...Product delivery device.

Claims (1)

[Scope of utility model registration request] A vending machine is equipped with a timer circuit that stops the sales operation when a predetermined sales operation is not performed, and includes a money sorting and counting device that outputs a sell-ready signal when coins are inserted, and a coin sorting and counting device that outputs a sell-ready signal when coins are inserted; a plurality of selection switches for selecting, a selection relay provided corresponding to each selection switch so as to be excited based on the operation of the selection switch, and a corresponding selection relay provided respectively corresponding to the selection relay. a product sending device that is activated by excitation to send out the product; a reset switch that is activated by the sending device or the product sold by the sending device and outputs a sales operation completion signal to stop the sales operation;
a timer circuit common to each selection relay that operates based on excitation of the selection relay; and a timer circuit provided for each of the sending devices and connected to the timer circuit via a contact point of the corresponding selection relay to activate the timer circuit. and a time constant setting resistor for setting a time, and excitation of the selection relay forces the timer circuit to operate after a predetermined time set by the corresponding time constant setting resistor, and the product delivery device 1. A control circuit for a vending machine, wherein the timer circuit stops the vending operation if the reset switch is not operated within a predetermined time period that is longer than the vending operation time for each vending machine.