JP4805766B2 - Game machine - Google Patents

Description

  The present invention relates to a gaming machine configured with a computer circuit, and more particularly to a gaming machine having a structure that can effectively eliminate fraudulent games.

  A ball and ball game machine such as a pachinko machine has a symbol start port provided on the game board, a symbol display unit for displaying a series of symbol variation modes such as stopping a plurality of display symbols after varying a predetermined time, and an opening / closing plate It is configured with a grand prize opening that opens and closes. When the detection switch provided at the symbol start port detects the passing of the game ball, the game ball enters a winning state, and after the game ball is paid out as a prize ball, the symbol display unit changes the display symbol for a predetermined time. Thereafter, when the symbol stops in a predetermined manner such as 7-7-7, a big hit state is established, and the big winning opening is repeatedly opened to generate a profit state advantageous to the player.

  Whether or not to enter the big hit state is determined based on, for example, a random number value at the time of winning when the game ball passes through the symbol start opening. That is, when a predetermined winning state is generated in relation to the player's gaming operation, it is determined whether or not to generate a profit state advantageous to the player by a lottery determination using a random value resulting therefrom.

  Therefore, a fraudulent player creates a gap between the frame body and the door body, from which foreign objects such as piano wires and celluloid boards enter, and a large amount of money is received at the big prize opening, the symbol start opening and other prize winning openings. There are concerns about illegal acts that attempt to illegally win game balls. This is because not only a large amount of winning balls can be obtained by illegally winning a large number of game balls, but also the chance of hitting a big hit will be probabilistically approached when winning at the symbol start opening.

  Further, in a spinning machine such as a slot machine, a large amount of game medals to be paid out to a player according to the game state is stocked inside the game machine body. For this reason, an illegal player creates a gap between the frame body and the door body, from which foreign objects such as piano wires and celluloid boards enter, and a large amount of games that are stocked inside the gaming machine body regardless of winning a prize There are also concerns about illegal activities that attempt to obtain medals illegally.

Therefore, various devices have been proposed to eliminate such illegal acts (for example, Patent Document 1). In the invention described in Patent Document 1, a detection unit including a transmission unit that transmits signals such as light, radio waves, and ultrasonic waves and a reception unit that receives a transmission signal from the transmission unit is used. And this detection part is provided in the clearance gap part which concerns on opening and closing of the door of the housing | casing of a game machine. According to the invention of this Patent Document 1, it is described that it is possible to detect that a foreign object has entered the inside of the housing of the gaming machine, issue an alarm, or stop the operation of the gaming machine.
JP-A-2005-152107

  However, since the above gaming machine requires a transmission unit and a reception unit, the overall configuration is not simple, and it is not realistic as a countermeasure for illegal activities that occur rarely. In addition, although patent document 1 mentions also use of a pressure switch, the mentioned pressure switch is only provided in a start switch, a stop switch, a bet switch, etc., and detects pressure, and this invention The problem cannot be solved.

  The present invention has been made in view of the above-described problems, and can effectively eliminate, for example, an illegal act that attempts to illegally intrude an unauthorized instrument through a gap in a glass door, while having a simple configuration. An object is to provide a gaming machine.

In order to achieve the above object, the present invention is a gaming machine having an opening and closing door and a main body portion closed by the opening and closing door, and having a pressure sensitive member attached to one or both of the opening and closing door and the main body portion. When the open / close door is moved in the opening direction from the stable closed state to the fully opened state, the closed stable value indicating the stable closed state corresponding to the change in the pressure receiving level of the pressure-sensitive member To a sensor circuit that outputs a detection signal (SG) that changes toward an open stable value indicating a complete open state via a transient value, and the signal level of the detection signal (SG) is closed. If the second fixed value (E2) close to the closed stable value is exceeded between the stable value and the open stable value toward the open stable value, it is determined that the open / close door has been moved from the stable closed state to the open direction. , A second determination unit (CO 2) and when the signal level of the detection signal (SG) exceeds the first fixed value (E1) close to the open stable value between the closed stable value and the open stable value, the stable value is reached. It is determined that the open / close door that has moved in the opening direction from the closed state has approached the fully opened state, and a first determination unit (COM1) that outputs a first detection value , a first detection value, and a second detection value In response to the exclusive OR operation, the abnormality detection unit (G1) outputs an abnormality signal (DR2) indicating that the open / close door has moved in the opening direction from the stable closed state but has not reached the complete open state. ), And configured so that the occurrence of an abnormal situation can be determined based on the fact that the duration of the abnormal signal is longer than normal or that the abnormal signal is intermittently generated. It is characterized by. According to the present invention, it is possible to grasp that the opening / closing door is opened / closed or is about to be opened / closed with an extremely simple configuration.

  The present invention is configured to detect illegal activities based on the duration of an abnormal signal or the intermittent occurrence of an abnormal signal. If it is a normal door opening / closing operation, the pulse width of the abnormal signal and the pulse width of the output signal that has processed the abnormal signal are within one second, for example, so an abnormal situation occurs when a pulse width exceeding this is detected. It can be determined that

Further, the present invention operates by receiving a first determination unit outputs the second judgment section, preferably door is Ru further provided an opening and closing detection unit that outputs a switching signal indicating whether closed or open. By adopting such a configuration, it is possible to immediately determine whether the abnormal signal is based on actual opening / closing of the opening / closing door or whether it is abnormal without opening / closing of the opening / closing door. Further, if the payout signal indicating the payout state of the game medium (a prize ball signal in the embodiment) can be output together with the opening / closing signal, for example, the gaming machine pays out abnormally after the opening / closing door is completely opened. It is possible to immediately detect an abnormal situation where the operation has started.

  Note that the pressure-sensitive member is typically a pressure sensor configured such that the resistance value changes according to the pressure state.

It is also preferable to provide a circuit that generates a locking signal indicating that the door is locked. In this case, if an abnormal signal is output in the presence of the locking signal, it is an abnormal situation. Can be determined. Similarly, preferably also of providing a circuit for generating an opening and closing signal indicating that the door is opened, in this case, when the level of the opening and closing signal after a change timing of the abnormal signal is changed, abnormal It can be determined that this is not the case.

  According to the above-described present invention, illegal games can be effectively eliminated while having a very simple configuration.

  Hereinafter, the present invention will be described in detail based on a ball game machine according to an embodiment. FIG. 1 is a front view showing a pachinko machine according to the present embodiment. The illustrated pachinko machine includes a rectangular frame-shaped wooden outer frame 1 that is detachably mounted on an island structure, and a front frame 3 that is pivotably mounted via a first hinge 2A fixed to the outer frame 1. It consists of and. A game board 5 is detachably attached to the front frame 3 from the back side, and a glass door (open / close door) 6 and a front plate 7 are pivotally attached to the front side so as to be openable and closable.

  As shown in FIG. 2, the glass door 6 is configured to be openable and closable via the second hinge 2B. And the pressure sensor SNp is provided in the position in the front frame 3 where the door end side 6A of the glass door 6 contacts. The pressure sensor SNp is not particularly limited as long as it can sense the pressing force from the glass door 6, but here, the conductor thin plates D1 and D2 are laminated on the front and back surfaces of the flat plate-like pressure-sensitive conductive elastomer BD. A pressure switch is used (FIG. 2 (b)).

  The pressure-sensitive conductive elastomer BD is configured, for example, by uniformly dispersing conductive fine particles in a non-insulating elastic body. In the pressed state in which the glass door 6 is closed, the pressure-sensitive conductive elastomer BD contracts and the resistance value between the conductor thin plates D1 and D2 becomes, for example, a conduction resistance of 10Ω or less, but the glass door 6 is opened. In the non-pressed state, for example, a large resistance of about 10 MΩ is set.

  As shown in FIG. 1, the front plate 7 is provided with an upper plate 8 that stores game balls for launch, and a lower portion of the front frame 4 stores game balls that have overflowed or removed from the upper plate 8. A pan 9 and a firing handle 10 are provided. The launch handle 10 is interlocked with the launch motor, and a game ball is launched by a striking rod that operates according to the rotation angle of the launch handle 10.

  A chance button 11 is provided on the outer peripheral surface of the upper plate 8. The chance button 11 is provided at a position where it can be operated with the left hand of the player, and the player can operate the chance button 11 without releasing the right hand from the firing handle 10. The chance button 11 does not function normally, but when the game state becomes the button chance state, the built-in lamp is turned on and can be operated. The button chance state is a game state provided as necessary.

  On the right side of the upper plate 8, an operation panel 12 for ball lending operation with respect to the card-type ball lending machine is provided, a frequency display unit for displaying the remaining amount of the card with a three-digit number, and a ball of game balls for a predetermined amount A ball lending switch for instructing lending and a return switch for instructing to return the card at the end of the game are provided.

  A key hole HO for opening the gaming machine is provided on the right side of the upper plate 8. When the unlocking key is inserted into the keyhole HO and rotated slightly clockwise, the glass door 6 is configured to be opened from the front frame 3 (FIG. 2). Further, when the unlocking key inserted into the keyhole HO is rotated largely, the front frame 3 is opened from the outer frame 1. In the opened state of the front frame 3, the game board 5 and the control boards 20 to 26 are integrally opened with the front frame 3. In this embodiment, in the first unlocked state in which the glass door 6 is unlocked and the second unlocked state in which the front frame 3 is unlocked, switch signals indicating the respective unlocked states are output. It is configured.

  As shown in FIG. 3, the game board 5 is provided with a guide rail 13 formed of a metal outer rail and an inner rail in an annular shape, and a liquid crystal color display DISP is provided at the approximate center of the game area 5a inside. Has been placed. In addition, at a suitable place in the game area 5a, a symbol starting port 15, a big winning port 16, a plurality of normal winning ports 17 (four on the right and left sides of the big winning port 16), and a gate 18 serving as two passing ports are arranged. Has been. Each of these winning openings 15 to 18 has a detection switch inside, and can detect the passage of a game ball.

  The liquid crystal display DISP is a device that variably displays a specific symbol related to a big hit state and displays a background image and various characters in an animated manner. This liquid crystal display DISP has special symbol display portions Da to Dc in the center portion and a normal symbol display portion 19 in the upper right portion. The special symbol display portions Da to Dc execute a reach effect that expects a big hit state to be invited, and the special symbol display portions Da to Dc and the surroundings perform a notice effect that informs the result of the determination indefinitely. The

  The normal symbol display unit 19 displays a normal symbol. When a game ball that has passed through the gate 18 is detected, the displayed normal symbol fluctuates for a predetermined time and is extracted at the time when the game ball passes through the gate 18. The stop symbol determined by the random number for lottery is displayed and stopped.

  For example, the symbol start opening 15 is configured to be opened and closed by an electric tulip having a pair of left and right opening and closing claws 15a. When the stop symbol after the fluctuation of the normal symbol display unit 19 displays a winning symbol, the symbol start port 15 is opened and closed. The claw 15a is opened for a predetermined time. When a game ball wins the symbol start port 15, the display symbols of the special symbol display portions Da to Dc change for a predetermined time and are determined based on the lottery result corresponding to the winning timing of the game ball to the symbol start port 15. Stop at the stop symbol. In addition, in special symbol display parts Da-Dc and its circumference, a notice effect may be performed between a series of symbol effects.

  The big winning opening 16 is controlled to open and close by, for example, an opening / closing plate 16a that can be opened forward. When the stop symbol after the symbol change of the special symbol display portions Da to Dc is a big hit symbol such as “777”, the “big hit” Is started, and the opening / closing plate 16a is opened. A winning area 16 b is provided inside the big winning opening 16.

  After the opening / closing plate 16a of the big prize opening 16 is opened, the opening / closing plate 16a is closed when a predetermined time elapses or when a predetermined number (for example, 10) of game balls wins. In such an operation, the special game is continued up to 15 times, for example, and is controlled in a state advantageous to the player. In addition, when the stop symbol after the change of the special symbol display parts Da to Dc is a specific symbol of the special symbols, a privilege that the game after the end of the special game is in a high probability state is given. Usually, the big hit by this specific design is called “probable big hit”.

  FIG. 4 is a block diagram showing an overall circuit configuration of the pachinko machine 1 that realizes each operation described above. Broken lines in the figure mainly indicate DC voltage lines.

  As shown in the figure, this pachinko machine 1 receives AC 24V, outputs various DC voltages and outputs a system reset signal when the power is turned on, a main control board 21 for centrally controlling game operations, An effect control board 22 that executes a lamp effect and an audio effect based on a control command CMD received from the main control board 21, an effect interface board 23 that transmits a signal received from the effect control board 22, and an effect interface board 23 The liquid crystal control board 24 for driving the liquid crystal display DISP based on the control command CMD ′ received from the control unit, and the payout control for controlling the payout motor M based on the control command CMD ″ received from the main control board 21 to pay out the game ball. The board 25 and the launch control board 26 that launches the game ball in response to the player's operation are mainly configured. It is.

  Here, the main control board 21, the effect control board 22, the liquid crystal control board 24, and the payout control board 25 are each mounted with a computer circuit including a one-chip microcomputer. Therefore, the functions mounted on the main control board 21, the production control board 22, the liquid crystal control board 24, and the payout control board 25 and the operations realized by the circuits are functionally named. Unit 21, effect control unit 22, liquid crystal control unit 24, and payout control unit 25. All or part of the effect control unit 22, the liquid crystal control unit 24, and the payout control unit 25 are sub-control units.

  As shown in FIG. 4, the main control board 21 is connected to the command relay board 29 and is connected to each game component of the game board 5 via the game board relay board 27. And while receiving the switch signal of the detection switch built in each winning opening 16-18 on a game board, solenoids, such as an electric tulip, are driven. Note that the switch signal from the symbol start port 15 is received directly by the main control unit 21 without going through the game board relay board 27.

  As described above, the payout control unit 25 pays out a prize ball designated based on the control command CMD ″ received from the main control unit 21. Specifically, the payout motor M1 is rotated a predetermined number of times. In addition, a prize ball counting signal indicating a game ball payout operation and a status signal CON related to an abnormality in the payout operation are transmitted to the main control unit 21. The signal CON includes, for example, a replenishment signal, a payout shortage error signal, and a lower plate full signal.

  Further, the payout control unit 25 outputs an AC voltage AC24V and a launch control signal CTL to the launch control board 26. The launch control signal CTL is a condition for operating the launch motor M2. When the launch control signal CTL is at L level, the launch operation of the game ball is prohibited.

  Furthermore, the payout control unit 25 outputs a prize ball signal and a door signal DR to the hall computer. Here, the hall computer is a computer device that centrally manages all the gaming machines in the gaming hall, and manages the winning ball operation of the payout motor M1 based on the winning ball signal received from each gaming machine.

  The door signal DR is 2 bits long in this embodiment, and the door opening signal DR1 indicating that the glass door 6 has been opened and the suspicious action to open the glass door 6 without operating the unlocking key. It consists of an abnormal signal DR2 that can be identified. It can be confirmed by the door opening signal DR1 that the clerk has operated the unlocking key to open the glass door 6 in order to eliminate the clogging of the game ball, etc., while the suspicious action is the door opening signal DR1. It is possible to detect by generating only the abnormal signal DR2 without accompanying.

<First Example>
FIG. 5 shows a first embodiment of the suspicious activity detection circuit DET. This detection circuit is provided in the payout control unit 25, and generates the door signal DR based on the output of the pressure sensor SNp that detects opening and closing of the glass door 6.

  As shown in FIG. 5A, the detection circuit DET of the first embodiment includes a pressure sensor SNp whose resistance value R1 changes according to the pressurization state, and a power supply voltage connected to the first electrode D1 of the pressure sensor SNp. Vcc, a detection resistor R2 connected between the second electrode D2 of the pressure sensor SNp and the ground, two comparators COM1, COM2, an exclusive OR gate G1, an AND gate G2, and a driver GT. . In this embodiment, the driver GT is a sink driver that performs a NOT operation, and its output is pulled up to become a door signal DR. The door signal DR has a 2-bit length consisting of a door opening signal DR1 and an abnormal signal DR2.

  As illustrated, a detection signal SG that is a voltage across the detection resistor R2 is supplied to the inverting terminals (−) of the comparators COM1 and COM2. Since the power supply voltage Vcc is divided by the two resistors R1 and R2, the detection signal SG is R2 / (R1 + R2) × Vcc, indicating a voltage value corresponding to the pressure state of the pressure sensor SNp. Specifically, according to the pressurization level, the resistance value R1 of the pressure sensor SNp changes from a large resistance value → 0, and in response to this, the detection signal SG is directed from ≈0 → ≈Vcc. Change.

  Reference voltages E1 and E2 are supplied to the non-inverting terminals (+) of the comparators COM1 and COM2. As shown in FIG. 5C, the reference voltage E1 is set to be slightly higher than the detection signal SG≈0 when the glass door 6 is opened in which the pressure sensor SNp is in an uncompressed state. The reference voltage E2 is set to be slightly lower than the detection signal SG≈Vcc when the glass door 6 is closed when the pressure sensor SNp is in a compressed state.

Output signals Q1 and Q2 of two comparators COM1 and COM2 are supplied to input terminals of the exclusive OR gate G1 and the AND gate G2. Therefore, the outputs Q1 and Q2 of the comparators COM1 and COM2 according to the voltage level (SG> E 2 , E2>SG> E1, SG <E1) of the detection signal SG are shown in the trial value table of FIG. Become a level.

  Specifically, when the glass door 6 is fully opened, the detection signal SG becomes SG <E1, and the output of the AND gate G2 becomes H level from Q1 = Q2 = H level. That is, the door opening signal DR1 falls to the L level only when the glass door 6 is completely opened, and is at the H level otherwise. On the other hand, when the glass door 6 is completely closed, the detection signal SG becomes SG> E2, and Q1 = Q2 = L level.

  By the way, there is a concern about illegal acts that try to forcefully widen the gap between the closed glass door 6 and the front frame 3. This is because a piano wire or the like is sneaked into the forcibly widened gap and the piano wire is hooked to open the grand prize winning opening 16 or to spread a blocking nail to the symbol start opening 15. In such a case, the illegal person first tries to widen the closed glass door 6 in the opening direction in order to secure a necessary gap.

  Then, corresponding to the gap between the glass door 6 and the front frame 3 being slightly expanded, the compression state of the pressure sensor SNp is relaxed, and the detection signal SG falls below the reference voltage E2 (E2> SG), The output Q2 of the comparator COM2 changes from L level to H level. However, since the compression state of the pressure sensor SNp is maintained as it is (SG> E1), the output Q1 of the comparator COM1 remains at the L level (see FIG. 5C).

  The output signals Q1 and Q2 of the two comparators COM1 and COM2 are supplied to the input terminal of the exclusive OR gate G1. Therefore, at the initial stage of the illegal action described above, the output of the exclusive OR gate G1 rises to the H level, and the abnormal signal DR2 whose level is inverted and falls to the L level is output. Since this abnormal signal DR2 is transmitted to the hall computer, an illegal person can be prevented in advance by an urgent staff in response to the abnormal signal DR2 maintaining the L level for several seconds. In this case, the hall computer recognizes the occurrence of illegal activities based on the duration of the L level abnormality signal DR2 and the intermittent generation of the L level abnormality signal DR2.

  By the way, the abnormality signal DR2 falls instantaneously even when the glass door 6 is normally opened by an attendant. However, at the time of the regular opening, the door opening signal DR1 also falls after the falling edge of the abnormal signal DR2, so that it can be distinguished from an illegal act. Also, when the clerk closes the glass door 6 again, the abnormal signal falls instantaneously. However, at the time of this regular closing, since the door opening signal is at the L level prior to this, it can be distinguished from illegal activities. Therefore, in the hall computer, it is possible not to detect an illegal action based on the duration of an abnormal signal or the like, but to detect an illegal action without opening the glass door 6 based on the above logic. In addition, it is also preferable to add a logic circuit to the payout control unit 25 so that an illegal action can be detected by each gaming machine so that an alarm sound or the like is generated by each gaming machine.

<Modified Example>
FIG. 6 shows a modification of the first embodiment for detecting an illegal action based on the operation of the unlocking key. As described with reference to FIG. 2, in this embodiment, the first unlocked state in which the glass door 6 is unlocked can be detected. Specifically, the first unlocked state is detected by a lock detection circuit 50 shown in FIG. 6, and the lock detection circuit 50 is configured around a pull-up unlock switch SW and a NOT gate G4. Yes. The output of the NOT gate G4 is supplied as a locking signal to the input terminal of the AND gate G3 and the light emitting diode.

  When the glass door 6 is locked, the unlocking switch SW is turned on. On the other hand, the unlocking switch SW is changed to the off state by a key operation toward the first unlocking state. Thus, in this embodiment, since the unlocking switch SW is in the ON state in the locked state, the output of the NOT gate G4 becomes H level and the light emitting diode is lit. Therefore, the clerk can visually confirm the locked state by turning on the light emitting diode, and does not need to bother to pull the glass door 6 to confirm the locked state.

  Incidentally, the output of the NOT gate G4 is supplied to the input terminal of the AND gate G3 together with the output of the exclusive OR gate G1. In the locked state of the glass door 6, the output of the NOT gate G4 is always H level in the locked state. Therefore, the H level output of the exclusive OR gate G1 is supplied to the driver GT through the AND gate G3 on condition that the exclusive OR gate G1 is in the locked state. On the other hand, at the time of regular opening and closing of the glass by the clerk, the glass door 6 is unlocked and the output of the NOT gate G4 is at L level, so the H level output of the exclusive OR gate G1 passes through the AND gate G3. There is nothing.

  As described above, according to this modified embodiment, even if the output of the exclusive OG gate G1 changes to H level as the glass door 6 is opened and closed, it is not transmitted to the hall computer. Therefore, the hall computer can immediately determine that an illegal action has occurred when the falling edge of the abnormal signal DR2 is detected.

<Second Example>
FIG. 7 shows a schematic configuration of the detection circuit DET of the second embodiment. Pressure sensor SNp is arrange | positioned at the front-end | tip part 60 of the door-end side of the glass door 6, and the circular groove 30 which receives pressure sensor SNp is formed in the front frame 3 corresponding to this. Here, the circular arc groove 30 receives the pressure sensor SNp in an uncompressed free state when the glass door 6 is closed. Note that the pressure sensor SNp has the same configuration as that of the first embodiment, and the resistance value changes by contracting according to the pressurization level. The shape returns and the resistance value also returns to the original value.

  In the closed state of the glass door 6, the pressure sensor SNp is in an uncompressed free state, and its resistance value is large. On the other hand, when the glass door 6 is to be opened, the pressure sensor SNp is pressed against the arc groove 30, so that the resistance value decreases corresponding to the pressing force. Thus, in the second embodiment, the operation state of the pressure sensor in the closed state of the glass door 6 is opposite to that in the first embodiment. That is, in the first embodiment, the pressure sensor is in a compressed state when the glass door 6 is closed, whereas in the second embodiment, the pressure sensor is in a free state when the glass door 6 is closed.

  However, in the case of the second embodiment, since the pressure sensor SNp is not stressed in the closed state of the glass door 6, there is little risk of characteristic deterioration of the pressure sensor SNp even when used for many years. Moreover, in the second embodiment, there is an advantage that the glass door 6 cannot be opened anyway while maintaining the non-compressed free state of the pressure sensor SNp. On the other hand, in the case of the first embodiment, if an illegal instrument is used, it is not impossible to open the glass door 6 while maintaining the pressure (compression) state of the pressure sensor SNp.

  FIG. 8 is a circuit diagram of the detection circuit DET of the second embodiment. The detection circuit DET includes a pressure sensor SNp whose resistance value R1 changes according to the pressurization state, a power supply voltage Vcc connected to the first electrode D1 of the pressure sensor SNp, a second electrode D2 of the pressure sensor SNp, and the ground. A detection resistor R2, a comparator COM, a lock detection circuit 50, an AND gate G3 that receives the outputs of the comparator COM and the lock detection circuit 50, and a driver GT are connected.

  A detection signal SG, which is a voltage across the detection resistor R2, is supplied to the non-inverting terminal (+) of the comparator COM. The detection signal SG is R2 / (R1 + R2) × Vcc, and indicates a voltage value corresponding to the pressure state of the pressure sensor SNp. Specifically, according to the pressurization level, the resistance value R1 of the pressure sensor SNp changes from a large resistance value → ≈0, and in response to this, the detection signal SG is directed from approximately 0 → ≈Vcc. Change. This point is the same as in the first embodiment.

  The reference voltage Er is supplied to the inverting terminal (−) of the comparator COM. As shown in FIG. 8C, the reference voltage Er is set slightly higher than the voltage value when the glass door 6 is closed in which the pressure sensor SNp is in an uncompressed state. Unlike the case of the first embodiment, since the pressure sensor SNp is in a free state when the glass door 6 is closed, the pressure sensor SNp exhibits a large resistance value.

  When the glass door 6 is closed, if an attempt is made to create a gap between the glass door 6 and the front frame 3 without operating the unlocking key, the glass door 6 moves slightly in the opening direction, thereby causing the pressure sensor SNp. Compression force is applied. Then, since the detection signal SG increases toward Vcc, the output Q of the comparator COM changes from L level to H level. At this time, since it is in the locked state, the output of the NOT gate G4 is at the H level, and therefore the output Q of the comparator COM is determined to be transmitted to the hall computer as the abnormal signal DR2.

  Although the door opening signal DR1 is omitted in the illustrated second embodiment, the door opening signal DR1 may be generated by providing two comparators as in the first embodiment. Further, the lock detection circuit 50 and the AND gate G3 may be omitted, and the output of the comparator COM may be transmitted to the hall computer as it is (via a driver if necessary). In this case, the illegal action is detected based on the duration and frequency of occurrence of the abnormal signal or the relationship with the door opening signal DR1.

<Third embodiment>
FIG. 9 shows a schematic configuration of the detection circuit DET of the third embodiment, and the pressure sensor SNp is arranged in a U shape on the inner surface side of the glass door 6. As in the case of the second embodiment, in the third embodiment, the pressure sensor SNp is in a non-pressurized state with the glass door 6 closed. The circuit for detecting illegal activities may be exactly the same as the circuit shown in FIG.

  In the detection circuit DET of the third embodiment, in order to make a gap in the glass door 6, when an illegal acter pressurizes the pressure sensor SNp, or a sneaky piano wire presses the pressure sensor SNp, The resistance value R at the pressing point approaches zero. In this case, unlike the case of the second embodiment, almost uniform pressure is not applied to the entire pressure sensor SNp, and the pressure seems to be applied locally (see FIG. 9B).

  However, this pressure sensor SNp is equivalent to a large number of resistors connected in parallel between the long plate-like conductor thin plates D1 and D2 (see FIG. 9C), so that the resistance as a whole is reduced. The value is almost the same as the resistance value at the pressurization point, and the abnormal signal DR2 can be generated by the circuit configuration of FIG.

<Modified Example>
Note that a circuit configuration as shown in FIG. 10 is preferable in order to identify a location that is easily targeted by an unauthorized person. In this case, instead of using a single pressure sensor SNp that covers the outer periphery of the inner surface of the glass door 6, a plurality of pressure sensors SNp. Cover the outer periphery.

  FIG. 10 is a circuit example using eight pressure sensors SNp, and the output terminals Y0 to Y7 of the analog switch 41 are connected to the first electrode D1 of each pressure sensor SNp. Specifically, the analog switch 40 is an 8-channel multiplexer, and the voltage Vcc of the input terminal Xin is output to any one of the output terminals Y0 to Y7 according to the signal level of the 3-bit control terminals A to C. Is done.

  The control terminals A to C are supplied with a 3-bit output of the octal counter 41. The 3-bit output (control signal) of the octal counter 41 is supplied to the latch circuit 42. The latch circuit 42 synchronizes with the rise of the output of the AND gate G3, and the 3-bit output of the octal counter 41. The output is to be acquired. A light emitting diode is connected to the output terminal of the latch circuit 42, and the control signals of the control terminals A to C can be confirmed according to the lighting state.

  As shown in FIG. 10B, the Vcc level voltage is sequentially output from the Y0 to Y7 terminals in accordance with the progress of the clock pulse Φ, and the pressurization states of the eight pressure sensors SNp are correspondingly corresponding to this. Checked in order. Here, assuming that the pressure sensor SNp connected to the output terminal Y2 is in a pressurized state, an H level pulse output is output from the AND gate G3 at the timing shown in FIG. Is obtained. At this time, the abnormal signal DR2 is transmitted to the hall computer, but the control signals A to C are acquired by the latch circuit 42 in synchronization with the output of the AND gate G3 rising. Therefore, the clerk who rushed to the gaming machine in which the illegal act was detected can know the location targeted by the illegal actor based on the lighting state of the light emitting diode. For example, when the same location is always aimed, the manufacturer can take appropriate measures for the gaming machine manufactured thereafter based on information from the gaming hall to that effect.

  Although the embodiments of the present invention have been specifically described above, the specific description content is not intended to limit the present invention, and various modifications can be made. For example, in the embodiment, the pressure sensor SNp is disposed on the glass door 6 or the front frame 3. However, the pressure sensor SNp is disposed on the front frame 3 facing the glass door 6 or the glass door 6 facing the front frame 3. Of course it is good. For example, in the case of FIG. 7, the pressure sensor SNp formed in a substantially cylindrical shape is fitted at the position of the arc groove 30. Moreover, it is also suitable not to arrange | position the pressure sensor SNp to the door-end side of a glass door like FIG. 7, but to arrange | position the pressure sensor SNp to the 2nd hinge 2B side.

  Moreover, in each Example, although the pressure sensor SNp was arrange | positioned in any one of the glass door 6 and the front frame 3, it is also suitable to arrange | position the pressure sensor SNp to both. FIG. 11 is a modification of the first embodiment, and illustrates a case where two pressure sensors SNp are provided on the glass door 6 and the front frame 3 respectively. In this case, the detection circuit DET is configured as shown in FIG. Then, similarly to FIG. 10, by providing the 4-channel multiplexer 40 and the quaternary counter 41, the pressurization states of the four pressure sensors can be sequentially examined. In this case, since the pressure sensor SNp is disposed on the glass door 6 and the front frame 3, it is not easy for an unauthorized person to open the glass door 6 while maintaining the compressed state of the pressure sensor SNp.

  In addition, the circuit configuration and circuit elements specifically exemplified can be changed as appropriate. In addition, as a process when it is detected that the glass door is opened, not only is it notified to the hall computer, but in addition to this, for example, (1) a prize ball payout operation is immediately prohibited, and / or Or, it is effective to take measures such as (2) flashly informing the open state of the door using sound, a lamp, or a liquid crystal display. In the case of adopting such an embodiment, the resumption of the payout operation is executed by operating a release button by a hall clerk. Note that the release button is provided, for example, on the payout control board.

It is a perspective view of the pachinko machine shown in an example. It is a schematic perspective view which shows the pachinko machine of the state which opened the glass door. It is the front view which illustrated in detail the game board of the pachinko machine of FIG. It is a block diagram which shows the whole structure of the pachinko machine of FIG. It is a circuit diagram (a), a trial value table (b), and a time chart (c) for explaining the detection circuit of the first embodiment. It is a circuit diagram (a), a trial value table (b), and a time chart (c) for explaining a modification of the first embodiment. It is a perspective view which shows the characteristic part of the detection circuit of a 2nd Example. It is the circuit diagram (a), the trial value table | surface (b), and time chart (c) explaining the detection circuit of 2nd Example. It is a perspective view which shows the characteristic part of the detection circuit of a 3rd Example. It is the circuit diagram (a) explaining the modification of a 3rd Example, and a time chart (b). FIG. 11 is a perspective view showing a modification of the first embodiment.

Explanation of symbols

6 Opening and closing door (glass door)
3 Main body (front frame)
SNp pressure sensor

Claims (5)

A gaming machine having an opening and closing door and a main body portion closed by the opening and closing door, and having a pressure sensitive member attached to one or both of the opening and closing door and the main body portion,
When the open / close door is moved in the opening direction from the stable closed state toward the fully opened state, the closed stable value indicating that the pressure-sensitive member is in the stable closed state corresponding to the change in the pressure receiving level of the pressure-sensitive member. A sensor circuit that outputs a detection signal (SG) that changes toward an open stable value indicating a complete open state via a transient value;
When the signal level of the detection signal (SG) exceeds the second fixed value (E2) close to the closed stable value between the closed stable value and the open stable value, the door is stabilized. A second determination unit (COM2) that determines that it has been moved in the opening direction from the closed state and outputs a second detection value;
When the signal level of the detection signal (SG) exceeds the first fixed value (E1) close to the open stable value between the closed stable value and the open stable value, the stable closed state is obtained. A first determination unit (COM1) that determines that the open / close door moved in the opening direction has approached a fully opened state and outputs a first detection value;
An abnormal signal indicating that the door has moved in the opening direction from the stable closed state in response to the first detection value and the second detection value, but has not reached the complete open state. DR2) and an abnormality detection unit (G1) configured to output,
A gaming machine configured to be able to determine the occurrence of an abnormal situation based on the fact that the duration of the abnormal signal is longer than normal or when the abnormal signal is intermittently generated.   The gaming machine according to claim 1, wherein the pressure-sensitive member is disposed so as to be in a pressurized state when the door is closed.   A circuit for generating a lock signal indicating that the door is locked is provided, and when the abnormal signal is output in the presence of the lock signal, an abnormal situation is determined. The gaming machine described. An open / close detection unit (G2) for receiving a first detection value and a second detection value and performing an AND operation to output an open / close signal indicating that the open / close door is almost completely open. The gaming machine according to any one of 1 to 3.   The gaming machine according to claim 4, wherein when the level of the opening / closing signal changes after the output of the abnormal signal, it is determined that there is no abnormal situation.

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