JP5172980B2 - Game machine - Google Patents

Description

  The present invention relates to an electronic gaming machine having a built-in computer device, and is particularly preferably applied to a spinning game machine or a ball game machine that uses medals or game balls as game media.

  In a spinning machine such as a slot machine, when a player inserts a medal into a medal slot and operates a start lever, the rotation of the rotating reel is started accordingly. When the player presses the stop button to stop the rotating reel, when the symbols on the stop line are aligned, a payout medal corresponding to the symbol is paid out. However, the success / failure state of each game is actually determined in advance by the lottery process inside the device at the start of each game, and the player wins the dividend medal by aligning the symbols won by this lottery process on the stop line. Is paid out.

  This payout medal is stored in advance in a medal hopper arranged in each slot machine. Then, when the payout motor MO rotates and pays out medals, and the payout detection sensor confirms the required number of payouts, the payout operation ends.

  The payout motor MO is composed of, for example, a DC motor that rotates at a voltage of DC 24V. A photocoupler that receives the medal payout signal PAY is provided, and when the medal payout signal PAY becomes L level, the transistor on the output side of the photocoupler is turned on to form a DC motor current drive circuit. Yes.

JP 2005-143656 A

  However, since the payout motor starts rotating when the medal payout signal PAY becomes L level, there is a concern about an illegal act of exploiting this relationship and dropping the signal line of the medal payout signal to the ground at the connection connector portion. . For example, an illegal act such as placing an ultra-fine short-circuit piece on the disconnected connector once and then returning it to the original state again can be considered. Here, although the invention of patent document 1 is also proposed, since it applies to simplicity, it cannot necessarily be said that it is an appropriate measure.

  Apart from the above-mentioned problem of illegal activities, there is also a concern about the problem of overpayment of medals due to inertia. Furthermore, a circuit configuration of a medal payout control device that operates properly even when equipment is abnormal is strongly desired. Typically, it is desirable to have a configuration that can prevent burnout and deterioration of the dispensing motor and electronic elements due to excessive current.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a gaming machine that can prevent illegal acts while having a simple circuit configuration. It is another object of the present invention to provide a gaming machine that always operates properly even when equipment is abnormal or at other timing.

In order to achieve the above object, a gaming machine according to the present invention is a DC motor having a current input terminal that receives a drive voltage from another circuit board and a current output terminal from which the drive current flows, and the current output terminal. And a drive motor for supplying a medal when a drive transistor connected between the ground and the ground is turned on, and an interface element that is controlled to open and close based on a payout command received from another circuit board, When a signal transmission circuit for turning on the drive transistor based on a bias current flowing when the interface element is turned on is connected to short-circuit the current input terminal and the current output terminal of the payout motor, and the interface element is turned on. On the other hand, if the interface element is turned off, the driving transistor is turned off. And a payout controller provided with a switch transistor that forms a short circuit for the output current of the payout motor, and the payout motor rotates in response to the ON action of the interface element. configured paid out the valuables to Rutotomoni, the dispensing control unit, said that the current limiting circuit operates based on the DC voltage supplied during the oN operation of the interface elements are provided, on the payout command The overcurrent during the payout operation of the payout motor is automatically adjusted .

  In each of the above inventions, preferably, the other circuit board should be provided with a series circuit in which an output element that performs ON / OFF operation and the current limiting resistor are connected in series. Further, it is effective for crime prevention if the signal line for the payout command and the signal line for the ground signal are arranged apart from each other in the connection connector.

  Each of the above inventions should preferably be provided with two switching elements that form a positive feedback loop that starts a transition operation to a saturated state when the drive current flowing through the dispensing motor exceeds a predetermined value. In this case, the two switching elements are composed of an NPN type transistor and a PNP type transistor, and it is effective to realize a thyristor structure as a whole.

  According to the above-described present invention, it is possible to realize a gaming machine that continues to operate properly even when the device is abnormal or illegal.

It is a front view of the slot machine which concerns on an Example. FIG. 2 is a right side view (a) and a plan view (b) of the slot machine of FIG. 1. It is the figure which illustrated the front panel of the slot machine from the back. It is an internal front view of the main body case of the slot machine. FIG. 2 is a block diagram showing a circuit configuration of the slot machine of FIG. 1. It is a block diagram which shows the connection relation of a main control board and a medal payout control board. It is a circuit diagram which shows the circuit structure of a medal payout control board. It is a flowchart explaining medal payout operation in the main control unit. It is a circuit diagram which shows another circuit structure of a medal payout control board. It is a circuit diagram which shows another circuit structure of a medal payout control board. It is drawing explaining medal payout operation. It is drawing explaining payout stop operation | movement.

  Hereinafter, the present invention will be described in more detail based on examples. 1 to 4 illustrate a slot machine SL according to an embodiment. In this slot machine SL, a rectangular box-shaped main body case 1 and a front panel 2 fitted with various game members are connected via a hinge 3 so that the front panel 2 can be opened and closed with respect to the main body case 1. (FIG. 2). 1 is a front view of the front panel 2, FIG. 2 is a right side view (a) and a plan view (b) of the slot machine SL, FIG. 3 is a rear view of the front panel 2, and FIG. A front view is shown.

  As shown in FIG. 4, a symbol rotating unit 4 including three rotating reels 4 a to 4 c is disposed in the approximate center of the main body case 1, and a medal payout device 5 is disposed below the symbol rotating unit 4. On each of the rotating reels 4a to 4c, a BB symbol, an RB symbol, various fruit symbols, a replay symbol, and the like are drawn. The medal payout device 5 is provided with a medal hopper 5a for storing medals, a payout motor MO, a medal payout control board 55, a payout relay board 63, a payout sensor SE (FIG. 5), and the like. Here, the medal is derived from the payout opening 5b toward the front of the drawing based on the rotation of the payout motor MO. Note that medals stored exceeding the limit amount are configured to fall into the auxiliary tank 6 through the overflow portion 5c.

  A power supply board 62 is arranged adjacent to the medal payout device 5, a main control board 50 is arranged above the symbol rotation unit 4, and a rotating drum setting board 54 is arranged adjacent to the main control board 50. ing. In addition, inside the symbol rotating unit 4, a rotating LED relay substrate 58 and a rotating relay substrate 57 are provided, and an external concentrated terminal plate 56 is disposed adjacent to the symbol rotating unit 4.

  As shown in FIG. 1, a liquid crystal display unit 7 is disposed on the upper portion of the front panel 2, and three display windows 8a to 8c corresponding to the rotating reels 4a to 4c are disposed on the lower portion thereof. Through the display windows 8a to 8c, about 3 symbols can be seen in the rotational direction of each of the rotating reels 4a to 4c, and a total of 9 symbols in the horizontal direction and 2 in the diagonal direction. Becomes a virtual stop line. On the left side of the display window 8a, an LED group 9 indicating a gaming state is provided. Below that, a payout display unit 10 for displaying the number of medals to be paid out as a gaming result, and the number of medals in a credit state are displayed. The storage number display part 11 to display is provided.

  In the center of the front panel 2 in the vertical direction, a medal insertion slot 12 for inserting medals is provided, and adjacent thereto, a return button 13 for returning medals filled in the medal insertion slot 12 is provided. Also, a credit check button 14 for paying out a credit medal, an insertion button 15 for artificially inserting one credit medal in place of inserting a medal into the medal slot 12, and a credit medal in a pseudo manner A maximum loading button 16 for loading three sheets is provided.

  Below these game members, a start lever 17 for starting the rotation of the rotating reels 4a to 4c and stop buttons 18a to 18c for stopping the rotating reels 4a to 4c are provided. In addition, below the front panel 2, a horizontally long tray 19 for storing medals and a medal outlet 20 communicating with the payout port 5b of the payout device 5 are provided. Speakers SP are arranged on the left and right sides of the medal outlet 20.

  As shown in FIG. 3, on the back side of the front panel 3, a medal sorting device 21 that sorts medals inserted into the medal slot 12, and medals that are determined to be inappropriate by the medal sorting device 21 A return passage 22 that guides the vehicle 20 is provided. A substrate case 23 that houses the effect control board 51, the effect interface board 52, the liquid crystal control board 61, and the like is disposed on the upper back side of the front panel 3. A game relay board 53 that relays signals between the various game members shown in FIG. 1 and the main control board 50 is provided on the medal sorting device 21.

  FIG. 5 is a block diagram illustrating a circuit configuration of the slot machine SL according to the embodiment. As shown in the figure, this slot machine SL realizes an effect operation based on a main control board 50 that controls the operation of various game members including the rotating reels 4a to 4c and a control command received from the main control board 50. The control board 51 and a power supply board 62 that converts an alternating voltage (24V) into a direct voltage (5V, 12V, 24V) and supplies them to each part of the apparatus are mainly configured.

  The main control board 50 outputs, to the effect control board 51, control commands for realizing the sound effect by the speaker SP, the lamp effect by the LED lamp or the cold cathode ray tube discharge tube, and the symbol effect by the liquid crystal display unit 7. doing. The effect control board 51 is connected to the liquid crystal control board 61 through the effect interface board 52, and the liquid crystal control board 61 realizes a design effect in the liquid crystal display (LCD) unit 7.

  The effect control board 51 realizes lamp effects in various LEDs and cold cathode ray tube discharge tubes via the LED board 59, the inverter board 60, and the rotary LED drive board 58 together with the effect interface board 52. In addition, the effect control board 51 drives the speaker SP through the effect interface board 52 to realize an audio effect.

  The main control board 50 is connected to various game members of the slot machine through the game relay board 53. Specifically, the start switch of the start lever 17, the stop switch of the stop buttons 18a to 18c, the input switch of the input buttons 15 and 16, the liquidation switch of the checkout button 14, and the photointerrupters PH1 and PH2 constituting the input number determination unit 21d The blocker solenoid 31 constituting the inserted medal return unit 21c and the various LED elements 9 to 11 are connected.

  Further, the main control board 50 is connected to the three stepping motors for rotating the rotating reels 4a to 4c and the index sensor for detecting the reference position of the rotating reels 4a to 4c via the rotating relay board 57. Has been. Then, by rotating or stopping the stepping motor, the rotating operation of the rotating reels 4a to 4c and the stopping operation at the target position are realized.

  The main control board 50 is also connected to the medal payout device 5 through the payout relay board 63.

  The medal payout device 5 is provided with a medal payout control board 55, a medal payout sensor SE, and a payout motor MO. The medal payout control board 55 is based on a medal payout signal PAY from the main control board 50. The payout motor MO is rotated to pay out a predetermined amount of medals.

  The payout motor MO is a DC motor such as a brush motor, and continues to rotate as long as it receives DC 24V.

  In addition, the main control board 50 is also connected to the external concentration terminal board 56 and the rotary setting board 54. The external concentrated terminal board 56 is connected to, for example, the hall computer HC, and the main control board 50 outputs the number of inserted medals and the number of paid out medals through the external concentrated terminal board 56. Further, the rotating setting board 54 outputs a setting key signal indicating the rank setting value of the probabilistic medal payout number set by the staff.

  FIG. 6 is a schematic diagram illustrating a connection relationship among the main control board 50, the payout relay board 63, and the medal payout control board 55. As illustrated, the medal payout control board 55 receives the medal payout signal PAY, DC5V, and DC24V from the main control board 50 via the payout relay board 63. Here, in the connection connectors CN3 and CN4, the DC5V is arranged next to the medal payout signal PAY, and the ground line GND is not arranged. Naturally, the ground line GND of the medal payout control board 55 is common to the main control board 50.

The medal payout signal PAY has a pulse width τ corresponding to the number of medals to be paid out, and is output from the main control board 50 via the output transistor Qa and the collector resistor Ra connected to the collector of the output transistor Qa. The The collector resistor Ra is connected to the power supply voltage Vcc = 5 V via the photocoupler PC, the resistor R1, and the polyswitch RT1 arranged on the medal payout control board 55 (FIG. 7).

The polyswitch is a polymer-based PTC (Positive Temperature Coefficient).
The thermistor has a characteristic that when the element temperature rises above a predetermined value, the resistance value of 1Ω or less rapidly increases to about 104Ω to 106Ω in a normal state.

  FIG. 7 specifically shows the circuit configuration of the medal payout control board 55. As described with reference to FIG. 6, the medal payout control board 55 is connected to the payout relay board 63 through the connector CN4, and receives DC24V, DC5V, and the medal payout signal PAY from the main control board 50. If the payout motor MO is connected to the connector CN5 of the medal payout control board 55 and the medal payout signal PAY is at the active level, the payout motor MO receives DC 24V and continuously rotates. .

  The medal payout control board 55 includes a signal transmission circuit 81 using a photocoupler PC, a current limiting circuit 82 using bipolar transistors Q3 and Q4, a drive control circuit 83 using a MOS transistor Q5, and an operation prohibiting circuit 84 using a MOS transistor Q6. Is provided.

  The signal transmission circuit 81 is configured by a series circuit of a polyswitch RT1, a current limiting resistor R1, and a photocoupler PC. The polyswitch RT1, the current limiting resistor R1, the light emitting diode Dp of the photocoupler PC, the current limiting resistor Ra of the main control board, and the output transistor Qa constitute a current closed circuit that receives DC 5V.

  Therefore, when the output transistor Qa is turned on, a forward current of Ion = (5-VF−VCE) / (R1 + Ra + RT1) flows through the light emitting diode Dp of the photocoupler PC, and the voltage level of the medal payout signal PAY is Ion * Ra + VCE [V]. Here, VCE is a saturation voltage between the collector and the emitter of the output transistor Qa, and is about 0.3V. Further, VF is a forward voltage drop of the light emitting diode Dp, and is about 1.2V.

  The resistors Ra and R1 are current limiting resistors for the transistor Qa and the photocoupler PC. In this current limiting state, the resistance value of the polyswitch RT1 is low and (R1 + Ra) >> RT1≈0Ω. Therefore, when the output transistor Qa is ON, an on-current Ion of about Ion≈3.5 / (R1 + Ra) flows through the light emitting diode Dp of the photocoupler PC.

  Here, consider a case where an illegal person abuses the portions of the connectors CN1 to CN4 and drops the medal payout signal PAY to the ground potential. In this case, since the current limiting resistor Ra is short-circuited, a short-circuit current of Ion = (5-VF) / (R1 + RT1) flows through the light-emitting diode Dp of the photocoupler PC.

  The current limiting resistor R1 is set to a minimum necessary value such that the light-emitting diode Dp of the photocoupler does not burn even during such illegal action. Specifically, when the maximum rated current value of the light emitting diode Dp is IMAX, the current limiting resistor R1 is set to R1≈ <3.8 / IMAX, for example. In any case, a short-circuit current IMAX that is sufficiently higher than the original on-current Ion≈3.5 / (R1 + Ra) flows through the light-emitting diode Dp of the photocoupler and the polyswitch RT1.

  For this reason, when the medal payout signal PAY is contacted with the ground line GND, the polyswitch RT1 is heated by the short-circuit current IMAX, although the photocoupler PC is initially turned on and the payout motor MO rotates. As a result, the photocoupler PC is eventually turned off, and the medal payout operation due to illegal acts is not successful.

  By the way, the signal line of the medal payout signal PAY is not directly brought into contact with the ground line GND, but the signal line of the medal payout signal PAY is brought into contact with the ground line GND through a resistor corresponding to the current limiting resistor Ra. If this happens, illegal activities may be successful.

  However, unless the disconnected connector CN4 is returned to its original state, energization to the payout motor MO is not realized. However, even though a very short-circuited piece can be arranged in the connector CN4, the resistor is not provided. Since it is virtually impossible to place in the connector CN4, illegal activities cannot be made successful. In addition, in the present embodiment, the signal line of the medal payout signal PAY and the ground line GND are arranged apart from each other.

  The current limiting circuit 82 includes a PNP transistor Q3, a collector resistor R4, a bias resistor R10, a current detection resistor R13 of the payout motor MO, a bias resistor R5, a capacitor C1, an NPN transistor Q4, and a current limiter. It comprises a resistor R8 and a reverse current blocking diode D2.

  The emitter terminal of the transistor Q3 is connected to the emitter terminal of the transistor Tr of the photocoupler and the current limiting resistor R8. A current limiting resistor R8 and a diode D2 are connected in series between the emitter terminal and the base terminal of the transistor Q3, and the cathode terminal of the diode D2 is connected to the base terminal of the transistor Q3. The cathode terminal of the diode D2 is connected to the collector terminal of the transistor Q4, and the emitter terminal thereof is connected to the ground. The base terminal of the transistor Q4 is connected to the ground through a capacitor C1 and a resistor R5 connected in parallel.

  The base terminal of the transistor Q4 is connected to the source terminal of the N-channel MOS transistor Q5 through the resistor R10. A resistor R13 is connected between the source terminal of the N-channel MOS transistor Q5 and the ground to monitor the drive current of the payout motor MO. The current detection resistor R13 is about 0.51Ω.

  The drive control circuit 83 includes an N channel MOS transistor Q5, a bias resistor R9, and a capacitor C3. Here, the drain terminal of the MOS transistor Q5 is connected to the (−) terminal of the payout motor MO. A resistor R9 and a capacitor C3 connected in parallel are connected between the base terminal and the source terminal.

  The operation prohibiting circuit 84 includes a P-channel MOS transistor Q6, voltage dividing bias resistors R11, R12, R6, and R7, a capacitor C2, a reverse current blocking diode D1, and a polyswitch RT2. . The source terminal and drain terminal of the P-channel MOS transistor Q6 are connected to the (+) terminal and the (-) terminal of the payout motor MO, respectively. Therefore, when the P-channel MOS transistor Q6 is turned on, the driving of the payout motor MO is prohibited.

  On the other hand, a resistor R11 is connected between the source terminal and the gate terminal of the MOS transistor Q6, and bias resistors R12, R6, and R7 are connected in series between the gate terminal and the grant. The cathode terminal of the diode D1 is connected to the connection point between the resistor R12 and the resistor R6. On the other hand, the anode terminal of the diode D1 is connected to the emitter terminal of the transistor Tr of the photocoupler PC and the resistor R8.

  The polyswitch RT2 is connected between the drain terminal of the P-channel MOS transistor Q2 and the (+) terminal of the payout motor MO. Therefore, for example, when an excessive current flows due to a short circuit of the wiring of the payout motor MO, the DC 24V power line is opened. The polyswitch RT2 has a great significance in the case of a trouble such that the current limiting circuit 82 does not function.

  Next, the medal payout process executed in the main control unit 50 will be described based on the flowchart of FIG. First, it is determined whether or not the number of medals to be paid out to the player is 0 (ST10). If the number of medals paid out is not 0, the number of credits is increased until the number of credits reaches an upper limit (for example, 50). By doing so, the payout process is executed (ST11 to ST13).

  On the other hand, when the number of credits reaches the upper limit value or reaches the upper limit value in this way, the medal payout signal PAY is set to the ON level (active level) (ST15). Specifically, the output transistor Qa of the main controller 50 is turned on, and the photocoupler PC of the medal payout control board 55 is turned on. As a result, the payout motor MO starts rotating and the payout of medals is started.

  Accordingly, it is next determined whether or not the payout sensor SE (FIG. 5) has detected a medal payout (ST16), and waits for a predetermined waiting time until a medal payout is detected (ST18). If a medal payout is detected, the payout number is subtracted (ST17), and the same operation is repeated until the remaining payout number becomes zero. On the other hand, if the payout sensor SE does not detect the payout of medals even after the predetermined standby time is exceeded, it is considered that the medal hopper 5a is empty, and an abnormality notification process to that effect is executed (ST19). When the opening / closing of the door sensor is detected, it is assumed that the replenishment process by the staff has been completed, the error notification process is canceled, and the process returns to step ST15.

  If such processing is repeated, the remaining payout number will eventually become 0 (ST13), so that the medal payout signal PAY is turned off and the processing ends (ST14). Specifically, the output transistor Qa of the main controller 50 is turned off, and the photocoupler PC of the medal payout control board 55 is turned off. As a result, the rotation of the payout motor MO is stopped.

Next, with respect to the embodiment shown in FIG. 7, the operation during the payout operation and the payout prohibition will be described just in case. First, the case where the output transistor Qa of the main control unit 50 is turned on (ST15) will be described with reference to FIG. In this case, DC5V → the path of poly switch RT1 → resistor R1 → photocoupler light-emitting diode Dp → resistor Ra → output transistor Qa, flows ON current _{I on.} For this reason, the photocoupler PC is turned on, and the direct current passing through the transistor Tr of the photocoupler PC flows in the path of the diode D1 → the resistor R6 → the resistor R7. In addition, the direct current passing through the transistor Tr also flows through a path of resistance R8 → resistance R9 → resistance R13 and a path of resistance R8 → resistance R9 → resistance R10 → R5. As a result, the transistor Q5 is turned on, the motor drive current flows through the path of the polyswitch RT2, the payout motor MO, and the transistor Q5, and the payout motor MO rotates.

  At this time, the current limiting circuit 82 functions as a negative feedback circuit that prevents an excessive motor driving current from flowing. That is, since the motor drive current flows through the current detection resistor R13, if the motor drive current increases greatly, the base potential of the transistor Q4 increases, and the collector current flows through the resistor R8 → diode D2 path.

Then, since the transistor Q4 and the transistor Q3 are connected to each other with a thyristor structure, an increase in the collector current of the transistor Q4 causes an increase in the collector current of the transistor Q3, and the transistor Q4 is connected via the resistor R5. By increasing the collector current more and more, the two transistors Q3 and Q4 form a positive feedback loop for ON operation.

  On the other hand, when the collector current of the transistor Q4 increases toward the saturation current, the potential of the anode terminal of the diode D2 drops, so that a negative feedback loop is formed to turn the transistor Q5 OFF. Therefore, an excessive motor drive current is prevented from flowing based on the operation of transistor Q5, and the motor drive current is maintained in a predetermined range.

By the way, at the timing when the payout motor MO is driven, the transistor Q6 is in the OFF state. The current flows through the path of the resistor R11 → the resistor R12 → the resistor R6 → the resistor R7, and the current also flows through the path of the diode D1 → the resistor R6 → the resistor R7. This is because the saturation voltage V _CE and the forward voltage drop V _{F of the} diode are suppressed to V _CE + V _F ≈1V.

  Next, based on FIG. 12, the operation when the output transistor Qa of the main control unit 50 is turned off (ST13) will be described. In this case, since the output transistor Qa is in the OFF state, no current flows through the diode Dp of the photocoupler PC. Since the photocoupler PC is in the OFF state, the transistors Q3, Q4, and Q5 are not in the ON state.

  On the other hand, a current flows through the path of the resistor R11 → the resistor R12 → the resistor R6 → the resistor R7 → the ground. Here, since the voltage across the resistor R11 is set to be 24 * R11 / (R11 + R12 + R6 + R7) ≈3V, the transistor Q6 is turned on by the voltage between the source terminal and the gate terminal of the transistor Q6.

  Since the ON operation of the transistor Q6 is executed when the photocoupler PC transitions from ON to OFF, the output current of the dispensing motor MO that functions as a generator is absorbed as a short-circuit current of the transistor Q6, and the rotation of the dispensing motor MO The brake is applied. Therefore, according to the configuration of the present embodiment, overpayment of medals due to inertial force is prevented.

  Although the embodiments of the present invention have been specifically described above, the specific description is not particularly intended to limit the present invention and can be appropriately changed. For example, while the slot machine has been described in the previous embodiment, the present invention is preferably applied to a ball game machine that implements a game ball payout process with a DC motor.

  In the previous embodiment, a polyswitch is used to eliminate illegal activities, but it is needless to say that other fuse elements that operate reversibly may be used. In addition, a fuse element that performs a fusing operation may be used simply, and more simply, a configuration in which the polyswitch RT1 and the current limiting resistor R1 are not provided may be employed. When such a configuration is adopted, at the time of an illegal action, a short-circuit current flows through the light emitting diode Dp, and the photocoupler PC is damaged, thereby preventing the illegal action.

  In addition, it is not always necessary to control the signal transmission circuit 81 to the cut-off state, and a configuration in which the photocoupler PC is short-circuited may be employed. FIG. 9 is a circuit diagram showing the circuit configuration. In this embodiment, a drain terminal D and a source terminal S of a field effect transistor Qf (FET: Field effect transistor) are connected in parallel with the light-emitting diode Dp of the photocoupler. Here, the field effect transistor is a concept including a junction type and a MOS type, and an N-channel type MOSFET is used in the illustrated example.

  DC 5V is supplied to the drain terminal D of the transistor Qf through the current limiting resistor R1. The gate terminal G of the transistor Qf is connected to the connection point of the voltage dividing resistors R2 and R3. In this embodiment, the voltage level of the medal payout signal PAY is, for example, 3V when the output transistor Qa is turned on.

  In this case, when the output transistor Qa is turned on, a voltage of 2 volts is applied to both ends of the voltage dividing resistors R2 and R3. Since the voltage between the gate terminal G and the source terminal S is 2 * R3 / (R2 + R3) volts, in this embodiment, this voltage value 2 * R3 / (R2 + R3) is the OFF state of the transistor Qf. Is set to maintain the level. That is, in this embodiment, the transistor Qf is in the OFF state even when the output transistor Qa is ON.

  Therefore, when the output transistor Qa is turned on, an on-current ION≈3.5 / (R1 + Ra) flows through the path of the current limiting resistor R1 → the light emitting diode Dp → the current limiting resistor Ra → the output transistor Qa, and the photocoupler PC is turned on. Operate. Note that the resistance values of the voltage dividing resistors R2 and R3 are sufficiently higher than that of the current limiting resistor R1, and therefore the current flowing therethrough may be ignored in relation to the on-current ION.

  Next, in this circuit, it is assumed that the voltage level of the medal payout signal PAY becomes the ground level due to an illegal action. In such a case, since the voltage 5 volts is directly applied to the voltage dividing resistors R2 and R3, the voltage between the gate terminal G and the source terminal S of the transistor Qf increases to 5 * R3 / (R2 + R3). To do. Since this voltage is set to a level at which the transistor Qf is turned on, the voltage between the drain terminal D and the source terminal S drops, and the light emitting diode Dp is turned off. As a result, since the photocoupler PC is not activated, the payout motor MO does not rotate, and the medal payout operation due to the illegal action is not successful.

  FIG. 10 shows still another embodiment, in which a collector terminal C and an emitter terminal E of a bipolar transistor Q are connected in parallel with a light-emitting diode Dp of a photocoupler. As shown, an NPN type transistor is used here.

  The collector terminal C of the transistor Q is supplied with DC 5V through the current limiting resistor R1, and the base terminal B is supplied with DC 5V through the bias resistor R2. In this embodiment, when the output transistor Qa is turned on, the transistor Q performs a linear operation, and the on-current ION flowing out from the current limiting resistor R1 is divided into the transistor Q and the light emitting diode Dp. However, even if the current combined with the collector current i1 of the transistor Q and the forward current i2 of the light-emitting diode Dp passes through the resistor R1, a voltage drop is caused so that the minimum operating voltage of the light-emitting diode Dp is maintained. The photocoupler PC is turned on without any problem.

  Next, it is assumed that the voltage level of the medal payout signal PAY becomes the ground level due to illegal action. In such a case, since the voltage of 5-VBE is applied to the bias resistor R2, the base current IB is IB = (5-VBE) / R2. Here, VBE is a voltage between the base terminal B and the emitter terminal E of the transistor Q, and is about 0.6V.

  In this embodiment, the collector current is saturated at such a base current value IB = (5-VBE) / R2. That is, at the time of illegal action, the transistor Q becomes saturated and the voltage between the collector terminal C and the emitter terminal E drops to, for example, about 0.3V. As a result, since the photocoupler PC is not activated, the payout motor MO does not rotate, and even in this circuit, the medal payout operation due to the illegal action is not successful.

PC interface element PAY Discharge command GND Ground signal CN4 Connection connector 55 Discharge control unit MO Discharge motor RT1 Rapid increase resistance Ra Current limiting resistance

Claims (5)

A DC motor having a current input terminal that receives a drive voltage from another circuit board and a current output terminal from which the drive current flows out, and when the drive transistor connected between the current output terminal and the ground is turned on, the drive current And a payout motor for paying out medals,
A signal transmission circuit having an interface element that is controlled to open and close based on a payout command received from another circuit board, and that causes the drive transistor to perform an ON operation based on a bias current that flows when the interface element is ON;
The current input terminal and the current output terminal of the dispensing motor are connected so as to be short-circuited, and when the interface element is turned on, the operation is turned off. A payout control unit provided with a switch transistor that operates to form a short circuit for the output current of the payout motor, and the payout motor rotates in response to the ON operation of the interface element to give the player valuable resources configured to paid out the by Rutotomoni,
The payout control unit is provided with a current limiting circuit that operates based on a DC voltage supplied when the interface element is turned on, so that the overcurrent during the payout operation of the payout motor based on the payout command is automatically detected. A gaming machine configured to be coordinated .   The gaming machine according to claim 1, wherein the switch transistor is formed of a P-channel MOS transistor, and a source terminal and a drain terminal thereof are connected to a current input terminal and a current output terminal, respectively.   The gaming machine according to claim 2, wherein a bias resistor is connected between a source terminal and a gate terminal of the switch transistor, and the bias current flows through the bias resistor only when the interface element is in an ON operation. The said current limiting circuit is comprised including two switching elements which form the positive feedback loop which starts the transition operation | movement to a saturated state, if the drive current which flows into a payout motor exceeds predetermined value . 4. The gaming machine according to any one of 3 . The gaming machine according to claim 4 , wherein the two switching elements are composed of an NPN transistor and a PNP transistor, and realize a thyristor structure as a whole.

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