JPS6222928Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a vending machine whose function is guaranteed by a built-in battery when the input voltage falls below the normal operating voltage.

(b) Conventional technology Vending machines are capable of sorting coins inserted, calculating the input amount using accepted specie coins, specifying sellable products by comparing the input amount with the product selling price, calculating change by sending out the products, and dispensing change. All monetary transactions are performed using a coin mechanism. When the power supply voltage drops below the normal operating voltage due to a power outage or the like, it is common to store and hold the input amount information by supplying battery power to the control circuit of the coin mechanism. However, if the entire control circuit was backed up, the battery would be severely consumed, making it unsuitable for long-term power outages. For this reason, Japanese Utility Model Application Publication No. 51-139697 discloses a configuration that minimizes battery consumption by saving input amount information of a control circuit into memory and cutting off power lines other than the memory from the battery when the voltage drops. ing.

(c) Problems to be solved by the invention However, the above-mentioned conventional technology includes a reject device that normally introduces the inserted coin into the receiving passage and, when the voltage drops, introduces the inserted coin to the return passage, and a reject device that normally introduces the inserted coin into the receiving passage. In the case of a configuration in which there is a large distance between the input coin and the coin switch that detects the coin, if the voltage decreases after the inserted coin is introduced into the receiving passage by the reject device and the power to the control circuit other than the memory is cut off, the coin There was a drawback that the amount was not detected and was not added to the input amount. This could be done by reducing the distance between the redirect device and the coin switch, but most coin mechanisms have a coin sorting device placed between the redirect device and the coin switch, so this is not possible. It is.

Based on the above points, the present invention saves the input amount information to the memory after enough time has elapsed for the coin to pass from the reject device to the coin switch after the voltage drop, and stops the battery power supply to other parts than the memory. This provides a device that can reliably memorize and hold the amount of money put into a vending machine, and can also minimize battery consumption.

(d) Means for Solving the Problems The configuration of the present invention will be explained with reference to drawings showing embodiments.The present invention is equipped with a reject device 3 for introducing input coins into the receiving passage 1 or the return passage 2, In a vending machine equipped with a control circuit 14 that calculates the input amount using introduced genuine coins, voltage detection controls the reject device 3 to guide the input coins to the return path 2 when the input voltage to the vending machine decreases. In addition to the device 4, the vending machine is provided with an auxiliary power supply device 5 that supplies auxiliary power to the vending machine due to a drop in input voltage. A first delay circuit 6 and a second delay circuit 8 are provided that start the delay operation after the input voltage decreases, and the control circuit 14 responds to the write signal output by the first delay circuit 6 after the first delay time. The connection is made so that the amount of money to be invested, which is being calculated, is saved in the memory 7. Further, the second delay circuit 8 outputs a switching signal when a second delay time longer than the first delay time has elapsed, and the connection is made so that the supply of auxiliary power to devices other than the memory 7 is thereby stopped.

(e) Effect When the voltage detection device 4 detects a drop in the input voltage to the vending machine, it controls the reject device 3 that introduces the inserted coins into the return path 2. Then, due to the drop in input voltage, the auxiliary power supply device 5 supplies auxiliary power to the vending machine. When the first delay circuit 6 outputs a write signal after a first predetermined time period after the input voltage drops, the memory 7 stores the amount of money inserted into the vending machine at this time. When the second delay circuit 8 outputs the switching signal after a second predetermined time period that is longer than the first predetermined time period, the supply of auxiliary power to devices other than the memory is stopped. Due to this action, auxiliary power is supplied to each part of the vending machine during the first predetermined time period starting from the drop in input voltage, and coins inserted just before the voltage drop are reliably accepted and the amount of money inserted is not changed. will be added. When the second predetermined time period has elapsed, only the memory storing the input amount is backed up by the auxiliary power supply to prevent voltage consumption.

(F) Embodiment Figure 1 shows the configuration of the device according to the present invention.
is a power transformer with commercial power connected to the primary side, 1
1 is a rectifier circuit, 12 is a smoothing capacitor, 13 is a power supply stabilization circuit, and 14 is a coin mechanism control circuit. The control circuit 14 calculates the input amount by counting the pulses corresponding to the input coins output from the calculation pulse generator 16 based on the coin detection output from the coin switch 15 disposed in the receiving passage 1, and further calculates the input amount as described above. It has a change calculation function and a judgment function related to coin processing. 17 is an initial setting circuit for resetting the control circuit 14 when the power is turned on, and 5 is an auxiliary power supply device equipped with a rechargeable battery 18. Reference numeral 3 denotes a reject device, in which a reject pin 20 is arranged at the branch point of the receiving passage 1 and the return passage 2 of the coin passage 19, and the control circuit 14
Normally, the coin is energized by the energization of the coil, and the coin is introduced into the receiving passage 1, but when the energization is cut off, the energization is deactivated, the reject pin 20 protrudes, and the coin is introduced into the return passage 2.
It is configured to be introduced into.

Reference numeral 4 denotes a voltage detection device, which is composed of a Zener diode 21 and a comparator 22. When the power supply voltage is in a normal state, higher than a predetermined voltage by the Zener diode 21, the comparator 22 outputs a high level signal. 6 is a delay circuit and comparator 2
When the output of 2 is reversed to low level, operation starts,
When the time elapses until the coins that have passed through the reject device 3 reach the coin switch 15, a high-level signal is output that instructs the control circuit 14 to write the calculated input amount information into the memory 7. In addition, transistor 9 has a power supply stabilization circuit 1 on its emitter.
3 and the auxiliary power supply device 5, and the collector is connected to the control circuit 14, the delay circuit 6, and the calculation pulse generator 16 to switch the supply of power, and the device is normally connected to the collector side with conduction. to supply power. 8 is also a delay circuit which starts operation when the output of comparator 22 is inverted to low level, but it has a longer delay time than delay circuit 6, and after this delay time a high level command to switch the power supply is activated. Transistor 9
Output to the base of. Note that the memory 7 and delay circuit 8 are connected to the power supply stabilization circuit 13 without passing through the transistor 9.
Power is directly supplied to the main unit and the auxiliary power supply device 5.

With the above configuration, the input voltage from the rectifier circuit 11
When V ₁ is higher than the normal operating voltage, comparator 22 outputs a high level signal, delay circuits 6 and 8 are inactive, and transistor 9
conducts, and the power supply voltage from the power supply stabilization circuit 13 is supplied to the control circuit 14 and the calculation pulse generator 16, and a charging path is formed in the battery 18 by a diode 23 and a resistor 24. In this state, the vending machine is in a normal operating state, and the control circuit 14 adds and counts the inserted amount pulse generated in the amount pulse generator 16 based on the insertion of genuine coins, calculates the inserted amount, and performs predetermined sales control. At the same time, during the control period, the power supply to the reject device 3 is stopped as appropriate to control the return of the inserted coins.

However, when the output voltage V ₁ from the rectifier circuit 11 divides the normal operating voltage V ₂ as shown in FIG. 2a, the comparator 22 inverts and outputs a low level signal as shown in FIG. 2b. 6 and 8
is supplied with auxiliary power from the battery 18 and starts operating. The control circuit 14 also continues to operate due to the supply of auxiliary power, but when a low level signal is input from the comparator 22, the power supply to the reject device 3 is stopped. Then, when the delay circuit 6 outputs a high level signal to the control circuit 14 after the elapse of time _t1 as shown in FIG. Furthermore, when the delay circuit 8 outputs a high level signal to the base of the transistor 9 after _t2 hours as shown in FIG. The supply of auxiliary power to 6 is stopped. However, since the memory 7 is supplied with auxiliary power, the input amount information is stored and retained, and the delay circuit 8 is also supplied with auxiliary power, so a high level signal is continuously introduced to the base of the transistor 9. auxiliary power is not supplied to devices connected to the collector. Therefore, after the elapse of time _t2 , the delay circuit 6 stops outputting as shown in FIG. 2c. When the output voltage from the rectifier circuit 11 returns to normal, a high level signal is generated from the comparator 22, and as shown in FIG.
As shown in FIG. 3, the output of the delay circuit 8 is stopped, the transistor 9 becomes conductive, and the device returns to its normal state.

Even if an input coin is introduced into the receiving passage ₁ just before the output voltage V 1 becomes lower than the normal operating voltage V ₂ at the above operation timing, the control circuit 14 and the calculation are not performed until the coin passes through the coin switch 15. Since the pulse generator 16 is supplied with auxiliary power, the amount of coins is reliably added and counted by the control circuit 14 to calculate the amount of money to be inserted. Moreover, the output voltage
As soon as V ₁ falls below the normal operating voltage V ₂ , control circuit 1
Since a low level signal is outputted from the comparator 4 to stop the power supply to the reject device 3, the reject pin 20 protrudes and the subsequent coins are introduced into the return path 2. Then, after ₁ hour t has elapsed, the inserted amount calculated by the control circuit 14 is stored in the memory 7, and since the auxiliary power is applied, the memory 7 includes the amount of coins inserted just before the output voltage V ₁ decreases. The input amount is reliably memorized and retained. After that, when the output voltage returns to normal, the control circuit 14 reads the input amount information from the memory 7 and can accurately restart the sales operation.

(G) Effects of the invention According to the invention detailed above, even coins inserted just before the input voltage to the vending machine drops below the normal operating voltage are counted reliably, so no harm is caused to customers. Moreover, since the input amount information is stored in the memory and the auxiliary power is applied only to the memory, battery consumption can be kept to a minimum. Therefore, by applying the present invention, it is possible to prevent malfunctions even if the vending machine is installed in a remote mountainous area or in a place with poor power supply conditions, such as in a transportation facility such as a train or ship.

[Brief explanation of the drawing]

FIG. 1 shows the configuration of an apparatus according to the present invention, and FIG. 2 shows an operation timing diagram. DESCRIPTION OF SYMBOLS 1... Acceptance passage, 2... Return passage, 3... Reject device, 4... Voltage detection device, 5... Auxiliary power supply device, 6... First delay circuit, 7... Memory, 8
...Second delay circuit, 9...Switching device.

Claims (1)

[Scope of utility model registration request] In a vending machine that is equipped with a reject device that introduces inserted coins into an acceptance passageway or a return passageway, and that detects genuine coins introduced into the acceptance passageway, calculates and stores the inserted coin amount, the input voltage to the vending machine is a voltage detection device that detects the input voltage and controls the reject device to introduce the input coin into the return passage when the input voltage decreases; an auxiliary power supply device that supplies auxiliary power to the vending machine when the input voltage decreases; a first delay circuit that outputs a write signal after a first delay time after the voltage drops; a memory that stores the calculated input amount using the write signal; and a memory that stores the calculated input amount using the write signal; a second delay circuit that outputs a switching signal after a second delay time that is longer than a delay time; and a switching device that stops supplying the auxiliary power source other than the memory in response to the switching signal. Time guarantee device.