JP5277803B2 - Pachinko machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent an erroneous detection that an illegal action such as hitting of a machine frame is carried out. <P>SOLUTION: A vibration sensor 90 accommodates a spring member 93 and a weight 94 in a sensor case 92. One end of the weight 94 is fixed to the sensor case 92 through the spring member 93 and is not vibrated by a small vibration arising when a player normally hitting a button of the machine frame. The vibration sensor 90 is attached to a display board case 77 which does not come into direct contact with a ball guide case. A vibration arising when a playing ball passes the ball guide case is damped by the display board case 77 and transmitted to the vibration sensor 90. Accordingly, the erroneous detection that the illegal action is carried out, can be prevented, owing to the small vibration arising when the player normally hitting the button of the machine frame and the vibration arising when the playing ball passes through the ball guide case. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a pachinko gaming machine having a function of detecting a fraud that applies vibration to a game board by applying a blow to a machine frame and changes the behavior of a game ball.

Some conventional pachinko machines have a structure in which a vibration sensor is fixed to the surface of a ball guiding case. This vibration sensor has a hard ball housed in a sensor case and an electrode disposed around the hard ball. The hard ball is shaken and touches the electrode when vibration is applied to the sensor case, and the vibration sensor is turned on electrically when the hard ball touches the electrode and vibration is applied. Detect.
JP 2007-236486 A

  In the case of a conventional pachinko gaming machine, the hard ball can swing freely inside the sensor case. For this reason, since the hard ball is shaken and contacts the electrode when a small shake is applied to the vibration sensor, for example, the vibration sensor detects a vibration when the player hits the button on the machine frame properly. For this reason, since the vibration sensor may detect the vibration even though the illegal act of hitting the machine frame is not performed, it is erroneously detected that the illegal act has been performed.

  The present invention has been made in view of the above circumstances, and a pachinko gaming machine that can prevent erroneous detection that an improper act of tapping a machine frame by vibration when a player normally taps a button of the machine frame is performed. Is intended to provide.

The pachinko gaming machine according to claim 1 is characterized in that it includes [1] game board to [ 5 ] sensor holding member, and [3] the vibration sensor is configured as [ 6 ].
[1] The game board is one in which game balls are launched, and reference numeral 21 in FIG. 4 corresponds to the game board.
[2] The ball guiding case is provided behind the game board as viewed from the player. This ball guiding case means a case where game balls such as a back cage, a ball assembly cage, a tank rail, a prize ball dispensing device, a prize ball dispensing passage, etc. pass through, such as the ball discharge case 61 of FIG. Each of the prize ball case 66 and the ball tank 67 of FIG. 3 corresponds to a ball guide case.
[3] The vibration sensor is provided behind the game board as viewed from the player. This vibration sensor is for detecting that vibration is improperly applied to the game board, and reference numeral 90 in FIG. 7 corresponds to the vibration sensor.
[4] The symbol display is provided behind the game board as viewed from the player, and is held by the display frame. Reference numeral 43 in FIG. 7 corresponds to a display frame, and reference numeral 44 in FIG. 7 corresponds to a symbol display.
[ 5 ] The sensor holding member is provided behind the game board as viewed from the player. This sensor holding member is fixed to the display frame and does not directly contact the ball guide case, and holds the vibration sensor. The display substrate case 77 in FIG. 7 corresponds to a sensor holding member.
[ 6 ] The vibration sensor includes a sensor case, a vibration sensing unit, and an electric element. The sensor case is attached to the sensor holding member in a stationary state so as to vibrate together with the sensor holding member when the sensor holding member vibrates, and has a hollow shape separated from the ball guiding case. The vibration sensing unit is provided inside the sensor case. The vibration sensing unit has a cantilever shape with one end fixed to the sensor case, and vibrates with respect to the sensor case when the sensor case vibrates. The electric element is provided inside the sensor case, and outputs a detection signal having a frequency corresponding to the frequency of the vibration sensing unit when the vibration sensing unit vibrates. For this reason, the vibration sensing unit does not vibrate with a small vibration such that the player normally hits the button, but vibrates with a large vibration hitting the machine frame. Moreover, high-frequency vibration generated when the game ball passes through the ball guiding case is not directly transmitted to the vibration sensor, but is attenuated to a level below the detection level of the vibration sensor by the sensor holding member and transmitted to the vibration sensor. In general, it is possible to prevent false detections of fraudulent acts of hitting the machine frame when the player hits the button on the machine frame and vibration when the game ball passes through the ball guide case. By tapping the machine frame, it is possible to accurately detect that an illegal act of applying vibration to the game board has been performed. 7 corresponds to a sensor case, the spring member 93 and the weight 94 in FIG. 7 constitute a vibration sensing unit 97, and the piezoelectric element 95 in FIG. 7 corresponds to an electrical element.

  As shown in FIG. 1, the outer frame 1 is constituted by joining a plurality of wood pieces into a rectangular tube shape whose front and rear surfaces are open, and the front of the outer frame 1 is shown in FIG. 2. As described above, the inner frame 2 is mounted so as to be rotatable about a shaft 3 oriented in the vertical direction. The inner frame 2 has a quadrangular ring shape, and has a left plate portion, a right plate portion, an upper plate portion, and a lower plate portion. The inner frame 2 is rotated around the shaft 3 between a closed state in which the front end surface of the outer frame 1 is in contact with the front and an open state in which the front end surface of the outer frame 1 is separated from the front. It is locked in a closed state via a frame lock mechanism. A base plate portion 4 is formed at the lower end portion of the inner frame 2. The base plate portion 4 has a vertical plate shape and closes the lower end portion of the inner frame 2.

  As shown in FIG. 1, a front frame 5 is attached to the inner frame 2 so as to be positioned in front of the inner frame 2. The front frame 5 is rotated about a common shaft 3 with the inner frame 2 between a closed state in which the front surface of the inner frame 2 is closed and an open state in which the front surface of the inner frame 2 is opened. It is locked in the closed state via the mechanism 6. A circular through-hole 7 is formed in the front frame 5, and a transparent glass window 8 is fixed to the inner peripheral surface of the through-hole 7.

  As shown in FIG. 1, an upper plate 9 is fixed to the front frame 5 in front of the front frame 5. The upper plate 9 has a container shape with an open upper surface, and the base plate portion 4 of the inner frame 2 has a discharge port 10 formed behind the upper plate 9 as shown in FIG. ing. The payout port 10 is used for paying out game balls into the upper plate 9 as prizes. The game balls paid out from the payout port 10 into the upper plate 9 are stored in the upper plate 9. As shown in FIG. 1, a lower plate 11 is fixed to the inner frame 2 below the upper plate 9, and a lower plate 12 is fixed to the lower plate 11. The lower plate 12 stores game balls overflowing from the upper plate 9, and has a container shape with an upper surface opened.

  As shown in FIG. 1, a handle base 13 is fixed to the lower plate 11 at the right side of the lower plate 12, and the handle base 13 is centered on a shaft 15 in which the handle 14 is directed in the front-rear direction. It is attached to be rotatable. The handle 14 is operated by a player with fingers from the front, and a handle sensor 16 is accommodated in the handle base 13. The handle sensor 16 is an electric off state when the handle 14 is stationary at a predetermined firing stop position and the handle 14 is not operated, and the handle 14 is moved clockwise from the firing stop position in FIG. An electrical ON state is obtained in the operation state in which the rotation operation is performed.

  As shown in FIG. 2, a firing solenoid 17 is fixed to the base plate portion 4 of the inner frame 2. The firing solenoid 17 is a rotary solenoid. When the handle sensor 16 is turned on clockwise from the firing stop position, the firing solenoid 17 is supplied with drive power. A ball striking rod is connected to the output shaft of the firing solenoid 17, and the firing solenoid 17 reciprocates and moves the ball striking rod between the standby position and the striking ball position based on the application of drive power.

  As shown in FIG. 2, a firing rail 18 is fixed to the base plate portion 4 of the inner frame 2. The firing rail 18 is one in which one game ball is transferred from the upper plate 9 in conjunction with the start of the movement of the hitting ball from the hitting position toward the standby position, and rises from right to left. It has an inclined shape. A ball stopper plate 19 is formed at the right end portion of the launch rail 18, and the ball stopper plate 19 is formed with a through hole having a size that prevents a game ball from passing therethrough. The ball stop plate 19 prevents the game ball transferred from the upper plate 9 to the firing rail 18 from falling from the right end portion of the firing rail 18, and the hitting ball moves from the standby position to the hitting position. Based on the above, the game ball supported by the ball stopper plate 19 so as not to fall is hit from the right to the left through the through hole of the ball stopper plate 19 and rolled from the right to the left along the launch rail 18.

  As shown in FIG. 3, a game board storage portion 20 is formed in the inner frame 2 so as to be positioned above the base plate portion 4. The game board storage unit 20 has a rectangular tube shape in which each of the front surface and the rear surface is open, and is disposed behind the front frame 5. As shown in FIG. 2, a vertical plate-like game board 21 is fitted from the front to the inner peripheral surface of the game board storage portion 20, and an inner rail 22 and an outer rail are mounted on the front surface of the game board 21. 23 and ball stopper rubber 24 are fixed. The inner rail 22 is composed of an arc-shaped metal plate whose upper surface is open, and the outer rail 23 is composed of an arc-shaped metal plate disposed on the outer peripheral portion of the inner rail 22. The rubber 24 is made of rubber that closes the gap between the right end of the inner rail 22 and the right end of the outer rail 23.

  As shown in FIG. 2, the game board 21 has a firing passage 25 located between the inner rail 22 and the outer rail 23. The launch passage 25 has an arc shape in which each of a lower end portion and an upper end portion is opened. A game ball launched from the left end portion of the launch rail 18 passes through the entrance at the lower end portion of the launch passage 25 and is then launched into the launch passage 25. Enter inside. The game ball rises while drawing an arcuate trajectory along the launch passage 25 and is then discharged from the outlet at the upper end of the launch passage 25.

  As shown in FIG. 2, a game area 26 is formed on the game board 21 adjacent to the right side of the launch passage 25. This game area 26 refers to the remaining circular area excluding the firing passage 25 in the area surrounded by the inner rail 22, the outer rail 23 and the ball stopper rubber 24, and is released from the exit of the firing passage 25. This corresponds to the maximum range in which the game ball can roll. A plurality of obstacle nails are fixed to the game board 21 in the game area 26, and the game balls released from the exit of the launch passage 25 into the game area 26 pass through the game area 26 while hitting the obstacle nails. Fall. This game area 26 is such that the window 8 of the front frame 5 faces from the front when the front frame 5 is closed, and is visually recognizable through the window 8 from the front when the front frame 5 is closed.

  As shown in FIG. 4, a vertical plate-like gate base plate 27 located in the game area 26 is fixed to the game board 21, and a gate 28 is fixed to the gate base plate 27. The gate 28 is formed in a U-shaped frame in which the upper surface and the lower surface are opened, and the game ball rolling in the game area 26 of the game board 21 is allowed to pass through the gate 28 from top to bottom. Yes. A gate sensor 29 (see FIG. 5) is fixed in the gate 28, and the gate sensor 29 detects that a game ball has passed through the gate 28 and outputs a gate signal.

  As shown in FIG. 4, the game board 21 is fixed with a vertical plate-shaped winning hole base plate 30 located in the game area 26, and the winning hole base 31 is fixed with a winning opening 31. ing. The winning opening 31 has a pocket shape with an open upper surface. In the winning opening 31, a game ball that rolls in the game area 26 of the game board 21 can be won. A winning opening sensor 32 (see FIG. 5) is fixed in the winning opening 31, and the winning opening sensor 32 detects that a game ball has won the winning opening 31 and outputs a winning signal. As shown in FIG. 6, the winning end 31 is joined to the front end portion of the heel 33 oriented in the front-rear direction. The flange 33 has a U-shaped cross section with an open top surface, and has an inclined bottom surface that descends from front to back. The rear end portion of the bowl 33 penetrates the game board 21 and protrudes behind the game board 21, and the game ball that has won a prize in the winning opening 31 moves from the front to the rear along the bottom face of the bowl 33. It falls from the rear surface of the ridge 33 by rolling. That is, the bowl 33 discharges the game ball from the game area 26 of the game board 21 to the rear of the game board 21.

  As shown in FIG. 4, the game board 21 has a vertical plate-shaped start port base plate 34 positioned in the game area 26 and fixed to the start port base plate 34. ing. The start opening 35 has a pocket shape with an open top surface, and a game ball that rolls in the game area 26 of the game board 21 can be won in the start opening 35. A start port sensor 36 (see FIG. 5) is fixed in the start port 35, and the start port sensor 36 detects that a game ball has won the start port 35 and outputs a start signal. A spear 33 is joined to the start port 35, and the game ball won in the start port 35 is discharged to the rear of the game board 21 along the spear 33.

  As shown in FIG. 4, two blades 37 are attached to the start port 35. Each of these blades 37 is rotatable about a shaft 38 directed in the front-rear direction, and is connected to a plunger of a common start port solenoid 39 (see FIG. 5). Each of these blades 37 is in a vertically contracted state when the start port solenoid 39 is electrically off, and when the start port solenoid 39 is electrically on, the blades 37 are horizontally expanded with the shaft 38 as a center. Rotate. Each of these blades 37 forms a gap of a size that allows one game ball to pass between the blades 37 in the contracted state. Then, it is allowed that a game ball rolling in the game area 26 wins a prize in the start opening 35 through a gap between both blades 37. Each of the two blades 37 captures a game ball that rolls in the game area 26 in the expanded state, and in each expanded state of the two blades 37, the game ball that rolls in the game region 26 has a blade. It is allowed to win in the start opening 35 based on rolling along the plate 37.

  As shown in FIG. 7, the game board 21 has an opening 40 located in the game area 26, and a decorative frame 41 is fitted into the opening 40 in a contact state from the front. . The decorative frame 41 has a cylindrical shape in which each of the front surface and the rear surface is opened. The decorative frame 41 is formed with an annular base plate portion 42 that surrounds the decorative frame 41. The decorative frame 41 is fixed by screwing a plurality of screws into the game board 21 through the base plate portion 42 from the front, and the display frame 43 is fixed to the decorative frame 41 in a contact state from the rear. Yes. The display frame 43 is fixed with a symbol display 44 made of a liquid crystal display in a contact state, and the decorative frame 41 surrounds the symbol display 44 as viewed from the front as shown in FIG. . The symbol display 44 is arranged behind the game board 21, and the display content of the symbol display 44 can be visually recognized from the front through the window 8 of the front frame 5.

  As shown in FIG. 4, an upper special prize opening 45 is fixed to the base plate portion 42 of the decorative frame 41 so as to be positioned above the symbol display 44. The upper special prize opening 45 has a box shape with an open front, and the upper door 46 is mounted on the upper special prize opening 45 so as to be rotatable about a shaft 47 directed in the left-right direction. The upper door 46 is connected to the output shaft of the upper special winning opening solenoid 48 (see FIG. 5), and the upper special winning opening solenoid 48 is in the vertical closed state when the upper special winning opening solenoid 48 is electrically turned off. The game ball closes the front of the winning opening 45 so that the winning is impossible. The upper door 46 rotates in an open state in which the upper special prize opening solenoid 48 is electrically turned on and falls horizontally forward. When the upper door 46 is in an open state, the upper door 46 moves in the game area 26 of the game board 21. A rolling game ball is allowed to ride on the upper door 46 and win in the upper special winning opening 45. An upper count sensor 49 (see FIG. 5) is fixed in the upper special winning opening 45, and the upper count sensor 49 detects that a game ball has won the upper special winning opening 45 and outputs an upper count signal. Output.

  As shown in FIG. 4, a stage 50 is fixed to the decorative frame 41 so as to be positioned below the symbol display 44. The stage 50 has an inclined plate shape that descends from the rear to the front, and the upper special winning opening 45 is connected to the rear end portion of the stage 50 through a ball passage. This ball passage is fixed to the decorative frame 41, and the game ball won in the upper special winning opening 45 is discharged to the rear end portion of the stage 50 through the ball passage. The game ball rolls from the rear to the front along the stage 50 and falls from the front end of the stage 50. As shown in FIG. 4, a release port 51 is fixed to the decorative frame 41. The detachment port 51 is a hole into which a game ball dropped from the front end of the stage 50 can enter, and has a horizontally long box shape with an upper surface opened. A pocket-shaped large hit hole 52 whose upper surface is open is accommodated in the outlet 51. A big hit sensor 53 (see FIG. 5) is fixed in the big hit hole 52, and the big hit sensor 53 detects that a game ball has entered into the big hit hole 52 and outputs a big hit signal.

  The big hit hole 52 is connected to the rotating shaft of the accessory motor 54 (see FIG. 5). The accessory motor 54 is fixed to the decorative frame 41. When the accessory motor 54 is in an operating state, the big hit hole 52 extends in the left-right direction between the left end portion in the release port 51 and the right end portion in the release port 51. Move back and forth. The width dimension of the big hit hole 52 in the left-right direction is set to a size that allows one game ball to enter, and the width dimension in the left-right direction of the outlet 51 is set to three times or more the diameter dimension of the game ball. The game ball that has fallen from the front end of the stage 50 enters either the release port 51 or the big hit port 52. The front end portion of the basket 33 is joined to each of the outlet 51 and the big hit hole 52, and the game balls that have entered the outlet 51 and the game balls that have entered the big jack 52 are along the hook 33. It is discharged to the rear of the game board 21.

  As shown in FIG. 4, the gaming board 21 is fixed with a vertical plate-shaped lower special winning opening base plate 55 located in the gaming area 26. The winning opening 56 is fixed. The lower special prize opening 56 has a box shape with an open front surface, and a lower door 57 is mounted on the lower special prize opening 56 so as to be rotatable about a shaft 58 directed in the left-right direction. The lower door 57 is connected to the output shaft of the lower special winning opening solenoid 59 (see FIG. 5), and the lower special winning opening solenoid 59 is in the vertical closed state when the lower special winning opening solenoid 59 is electrically turned off. The game ball closes the front of the winning opening 56 so that the winning is impossible. The lower door 57 rotates in an open state in which the lower special prize opening solenoid 59 is electrically turned on and horizontally falls forward. When the lower door 57 is in an open state, the lower door 57 moves through the game area 26 of the game board 21. The rolling game ball is allowed to ride on the lower door 57 and win a prize in the lower special prize opening 56. A lower count sensor 60 (see FIG. 5) is fixed in the lower special winning opening 56, and the lower count sensor 60 detects that a game ball has won the lower special winning opening 56 and outputs a lower count signal. Output. A front end portion of the bowl 33 is joined to the lower special prize opening 56, and a game ball won in the lower special prize opening 56 is discharged to the rear of the game board 21 along the bowl 33.

  As shown in FIG. 3, a synthetic resin ball discharge case 61 is joined to the inner frame 2 on the rear surface of the base plate portion 4. The ball discharge case 61 has a rectangular tube shape with an opening on each of the front and rear surfaces, and is arranged so as not to be in direct contact with each of the decorative frame 41, the display frame 43, and the symbol display 44. ing. A partition plate 62 is joined to the inner peripheral surface of the ball discharge case 61 as shown in FIG. The partition plate 62 partitions the internal space of the sphere discharge case 61 into a rear substrate storage chamber whose rear surface is open and a front sphere discharge chamber 63 whose front surface is open. The front surface of the sphere discharge chamber 63 is the inner frame 2. It is closed by the base plate part 4. A cover 64 is attached to the ball discharge case 61. The cover 64 is pivotable between a closed state and an open state about a vertical shaft 65. The cover 64 closes the rear surface of the substrate storage chamber in the closed state and covers the rear surface of the substrate storage chamber in the open state. Open.

  As shown in FIG. 3, a lower end portion of a vertically long prize ball case 66 is fixed to the ball discharge case 61. The prize ball case 66 is disposed behind the inner frame 2, and an upper ball path and a lower ball path are formed inside the prize ball case 66. Each of the upper sphere passage and the lower sphere passage is directed in the vertical direction, and is arranged in a line with a gap in the vertical direction. The upper end of the upper sphere passage is connected to a sphere tank 67. The ball tank 67 is used for playing game balls from the island facilities of the pachinko hall, and is joined to the rear surface of the inner frame 2. The ball tank 67 stores game balls, and game balls are supplied from the ball tank 67 into the upper ball passage of the prize ball case 66.

  In the prize ball case 66, a prize ball payout device is housed between the lower end portion of the upper ball passage and the upper end portion of the lower ball passage. This prize ball payout device drops a game ball from the lower end portion of the upper ball passage by using a payout motor 68 (see FIG. 5) composed of a pulse motor as a drive source. It enters the lower sphere passage through the upper end of the lower sphere passage. The lower end of the lower ball passage is connected to the payout port 10 of the inner frame 2, and the game ball that has entered the lower ball passage is paid out into the upper plate 9 from the lower ball passage through the payout port 10.

  A prize ball circuit board is accommodated in the board storage chamber of the ball discharge case 61, and a prize ball control circuit 69 (see FIG. 5) mainly composed of a microcomputer is mounted on the prize ball circuit board. As shown in FIG. 5, the prize ball control circuit 69 is connected with a payout motor 68 of a prize ball payout device, and the prize ball control circuit 69 drives the payout motor 68 to award a prize from the ball tank 67. A game ball is paid out into the upper plate 9 through the ball case 66 as a prize. A main circuit board is stored in the substrate storage chamber of the ball discharge case 61. The main circuit board is disposed behind the prize ball circuit board and is exposed when the cover 64 is opened. A main control circuit 70 (see FIG. 5) is mounted on the main circuit board. The main control circuit 70 is mainly composed of a microcomputer, and has a CPU 71, ROM 72 and RAM 73.

  As shown in FIG. 5, the main control circuit 70 is connected with a gate sensor 29, a winning opening sensor 32, a start opening sensor 36, an upper count sensor 49, a big hit sensor 53, and a lower count sensor 60. A CPU 71 of 70 receives a winning signal output from the winning port sensor 32, a starting signal output from the starting port sensor 36, an upper count signal output from the upper count sensor 49, and a lower count signal output from the lower count sensor 60. When each of them is detected, the prize ball control circuit 69 is instructed to drive the payout motor 68 to pay out the game ball into the upper plate 9 as a prize.

  As shown in FIG. 5, the handle sensor 16 is connected to the main control circuit 70, and the coil of the relay 74 is turned on when the CPU 71 of the main control circuit 70 determines that the handle sensor 16 is turned on. The normally open contact of the relay 74 is closed based on being electrically turned on. The normally open contact of the relay 74 is interposed in a power supply path that applies drive power to the firing solenoid 16. When the normally open contact of the relay 74 is closed, drive power is applied to the firing solenoid 16. This will drive the hitting ball. When the main control circuit 70 determines that the handle sensor 16 is turned off, the normally open contact of the relay 74 is opened based on electrically turning off the coil of the relay 74 to drive the firing solenoid 16. Stop driving the hitting ball by shutting off the power.

  As shown in FIG. 5, when the power is turned on, the main control circuit 70 closes the normally open contact of the relay 75 based on turning on the coil of the relay 75 electrically. The normally open contact of the relay 75 is interposed in a power supply path for applying drive power to the accessory motor 54. When the normally open contact of the relay 75 is closed, drive power is applied to the accessory motor 54. As a result, the big hit hole 52 reciprocates in the left-right direction. The main control circuit 70 is for electrically turning off the coil of the relay 75 to open the normally open contact of the relay 75 when the power is cut off, and the jackpot 52 is cut off from the main control circuit 70. Stop moving based on that.

The main control circuit 70 performs a normal game when the game ball passes through the gate 28, and performs a special game when the game ball wins in the start opening 35, and each of the normal game and the special game. The game contents are as follows.
[1] Normal Game The CPU 71 of the main control circuit 70 detects the current measured value of the hit counter based on the determination that the gate signal is output from the gate sensor 29. The hit counter is updated by a unit value (eg, “1”) every time a predetermined time (eg, 4 msec) is elapsed by the CPU 71, and the hit counter updating process is performed with a predetermined lower limit value (eg, “0”). Are added up to a predetermined upper limit value (for example, “32”), and then returned to the lower limit value and performed cyclically. The CPU 71 compares the detection result of the hit counter with a predetermined hit value (for example, “7”). If the detection result of the hit counter is the same as the hit value, the CPU 71 determines that the hit is true. When the detection result of the counter is different from the hit value, it is determined that the hit is not a hit. When the CPU 71 determines that it is a win, the driving power supply is applied to the start opening solenoid 39 for a predetermined hit time, and each of the blade plates 37 is rotated from the reduced state to the enlarged state, thereby playing the game. The difficulty level with which the ball wins the start opening 35 is reduced.
[2] Special Game The CPU 71 of the main control circuit 70 detects the current measured value of the jackpot counter based on the determination that the start signal is output from the start port sensor 36. The jackpot counter is updated only by a unit value (for example, “1”) every time a predetermined time (for example, 4 msec) elapses. The jackpot counter is updated by a predetermined lower limit value (for example, “0”). Is added to a predetermined upper limit value (for example, “100”), and then returned to the lower limit value and performed cyclically. The CPU 71 compares the detection result of the jackpot counter with a predetermined jackpot value (for example, “7”). If the detection result of the jackpot counter is the same as the jackpot value, the CPU 71 determines that the jackpot is hit. When the detection result of the counter is different from the big hit value, it is determined that the counter is out. When the CPU 71 determines that the game is a big hit, the driving power is applied to the upper special prize opening solenoid 48 for a predetermined time, and the upper door 46 is rotated from the closed state to the opened state to thereby play the game ball. It is allowed to win a prize in the upper special winning opening 45.

  When the CPU 71 determines that a big hit is received, the CPU 71 determines whether or not a big hit signal is output from the big hit sensor 53. This process is performed until a predetermined entry waiting time elapses on the basis that the drive power is applied to the upper special prize opening solenoid 48, and the entry waiting time is immediately before the upper special prize opening 45 is closed. In addition, when a game ball that has won a prize in the upper special prize opening 45 enters the jackpot 52, it is set to a value that can detect that the game ball has entered the jackpot 52.

  When the CPU 71 determines that a big hit signal is output from the big hit sensor 53 before the entry waiting time elapses, the CPU 71 starts a big hit round. In this big hit round, the lower door 57 is opened based on the application of drive power to the lower special prize opening solenoid 59 to allow the game ball to win in the lower special prize opening 56. In the big hit round, a limit time and a limit number are determined in advance. In the big hit round, a limit number of game balls are placed in the lower special prize opening 56 before the opening time of the lower special prize opening 56 reaches the limit time. Ends when the opening time of the lower special winning opening 56 reaches the limit time before the limit number of game balls wins in the lower special winning opening 56.

  As shown in FIG. 7, a display board box 76 is fixed to the display base frame 43. The display substrate box 76 is configured by joining a display substrate case 77 and a display substrate base 78 to each other, and each of the display substrate case 77 and the display substrate base 78 is formed of a synthetic resin as a material. . The display substrate case 77 has an open front surface, and the display substrate base 78 has a plate shape that closes the front surface of the display substrate case 77. The display substrate case 77 has a horizontally long rectangular shape when viewed from the front-rear direction, and includes a rear plate, a left side plate, a right side plate, a top plate, and a bottom plate.

  A plurality of boss portions 79 are formed on the display substrate base 78 as shown in FIG. Each of the plurality of boss portions 79 has a cylindrical shape directed in the front-rear direction, and screws 81 are screwed onto the inner peripheral surfaces of the plurality of boss portions 79 through the display substrate 80 from the rear. The display substrate 80 is fixed in a stationary state by a fastening force of a plurality of screws 81 inside the display substrate box 76, and the display substrate 80 includes a display control circuit 81 (FIG. 5) mainly composed of a microcomputer. Is installed).

  As shown in FIG. 5, the display control circuit 81 is connected to the main control circuit 70, and when the CPU 71 of the main control circuit 70 determines that it is a big hit, it sends a big hit command to the display control circuit 81, When it is determined that it is a detachment, a detach command is transmitted to the display control circuit 81. The display control circuit 81 sets the decoration symbol to a combination of jackpots when a jackpot command is received, and sets the decoration symbols to a combination of knockouts when a disconnect command is received. This decorative design consists of a combination of the left row of design elements, the middle row of design elements, and the right row of design elements. The jackpot combination is the left row of design elements, the middle row of design elements, and the right row of design elements. Each of the elements refers to the same combination as each other, and an outlier combination refers to a combination in which the symbol elements in the left column, the symbol elements in the middle column, and the symbol elements in the right column are not mutually identical.

  The display control circuit 81 controls the display content of the symbol display unit 44. When a decoration symbol is set, the display control circuit 81 starts displaying an image of the decoration symbol game on the symbol display unit 44. This decorative symbol game video is displayed on the symbol display 44 in the order of the left column of the symbol elements, the middle column of the symbol elements, and the right column of the symbol elements in a variable state and a variable stop state. The variable display of each of the symbol elements in the element to the right column has eight symbol elements “1”, “2”, “3”, “4”, “5”, “6”, “7”, and “8” in a predetermined order “1”. ”→“ 2 ”→“ 3 ”→“ 4 ”→“ 5 ”→“ 6 ”→“ 7 ”→“ 8 ”→“ 1 ”... In the video of the decorative symbol game, the symbol elements in the left column are variably stopped first, the symbol elements in the right column are variably stopped second, and the symbol elements in the middle column are variably stopped third. The stop display of each of the symbol elements in the left column to the middle column is performed so that the decorative symbols are combined in accordance with the setting result of the decorative symbols, and the CPU 71 of the main control circuit 70 is disconnected. When it is determined that the symbol element of the last middle row is stopped and displayed, the decorative symbol is displayed on the symbol display 44 in a combination of detachment, and when it is determined that it is a big hit, the symbol of the last middle row is displayed. When the element is stopped and displayed, the decorative symbol is displayed on the symbol display 44 in a combination of jackpots. When the CPU 71 of the main control circuit 70 determines that it is a big hit, the driving power is applied to the upper special winning opening solenoid 48 after the symbol elements in the last middle row are stopped on the symbol display 44. The upper special winning opening 45 is opened when the decorative symbol is stopped and displayed on the symbol display 44 in a combination of jackpots, and is not opened when the decorative symbol is stopped and displayed on the symbol display 44 in a combination of losing.

  As shown in FIG. 1, a button 96 is attached to the upper plate 9. The button 96 is linearly movable in the up and down direction between the normal position and the depressed position below the normal position, and the button 96 is connected to a switch operator. This switch is a self-returning push switch, and the button 96 is held in the normal position by the self-holding force of the switch operator. This switch is in an electrical off state at the normal position of the button 96, and changes from an electrical off state to an on state based on the button 96 being operated from the normal position to the pushed-in position. This switch is housed in the upper plate 9 and is electrically connected to the display control circuit 81. The display control circuit 81 determines that the button 96 has been operated based on the change of the switch from the off state to the on state, and the player moves the button 96 from the normal position while displaying the decorative symbol game image. When operated to the push-in position, the display control circuit 81 determines that the switch is turned on and displays a predetermined image on the symbol display 44 to give a visual change to the image of the decorative symbol game.

  As shown in FIG. 8, the ball discharge case 61 is formed with a notch-shaped entrance 82 located on the ceiling of the ball discharge chamber 63, and the winning port 31, the start port 35, the release port 51, and the big hit. The game balls that have fallen from the respective bowls 33 of the mouth 52 and the lower special prize opening 56 enter the ball discharge chamber 63 through the entrance 82. A ball receiving rail 83 is formed in the ball discharge chamber 63 on the partition plate 62 of the ball discharge chamber 63. The ball receiving rail 83 has an inclined shape that descends from right to left, and the game ball that has entered the ball discharge chamber 63 from the entrance 82 falls onto the ball receiving rail 83, and the ball receiving rail 83. Roll from right to left along

  A ball discharge path 84 is formed in the partition plate 62 of the ball discharge chamber 63 as shown in FIG. The front surface of the ball discharge path 84 is open, and the base plate portion 4 of the inner frame 2 closes the front surface of the ball discharge path 84. The ball discharge path 84 has an upper surface and a lower surface that are opened, and a game ball that rolls along the ball receiving rail 83 enters the ball discharge path 84 from the entrance on the upper surface of the ball discharge path 84. The game ball descends along the ball discharge path 84 and is discharged from the outlet of the lower surface of the ball discharge path 84 to the outside of the ball discharge chamber 63. Pachinko hall island facilities are installed below the exit of the ball discharge path 84, and game balls are collected from the exit of the ball discharge path 84 to the island facility.

  When the game ball enters the release port 51 along the stage 50 of the decorative frame 41, the big hit round is not started, and when the game ball enters the big hit port 52 along the stage 50 of the decorative frame 41 The jackpot round begins. Since the lower special prize opening 56 is opened in the big hit round, the game ball as a prize can be obtained by winning the game ball in the lower special prize opening 56. The state in which the game ball rolls along the stage 50 is visually recognizable from the front through the window 8, so that the game frame is rolling along the stage 50 and the front frame 5. A game ball that rolls along the stage 50 by hitting a machine frame including the upper plate 9, the lower plate 12, and the handle base 13 and applying an impact force to the game board 21 enters the jackpot 52. Injustices that change the rolling direction may be performed. The vibration sensor 90 detects an illegal act of changing the rolling direction of the game ball by applying an impact force to the game board 21 and is configured as follows.

  A piezoelectric vibration sensor 90 is fixed to the display substrate case 77 as shown in FIG. The vibration sensor 90 is fixed in contact with the corner of the rear plate having the largest area among the rear plate, the left side plate, the right side plate, the bottom plate, and the top plate of the display substrate case 77, as follows. It is configured. The sensor case 92 has a cylindrical shape whose front and rear surfaces are closed, and the ball discharge case 61, the prize ball case 66 and the ball tank 67 are separated from the sensor case 92. The sensor case 92 is fixed in a stationary state because the front plate of the sensor case 92 is joined to the rear plate of the display substrate case 77 in a surface contact state. When the display substrate case 77 vibrates, the display substrate case 77 is fixed. 77 and vibrate. A spring member 93 is accommodated in the sensor case 92. This spring member is composed of a compression coil spring oriented in the front-rear direction, and the front end portion of the spring member 93 is fixed to the front plate of the sensor case 92. A weight 94 is fixed to the rear end portion of the spring member 93. The spring member 93 and the weight 94 constitute a cantilevered vibration sensing unit 97 having one end fixed to the sensor case 92. The vibration sensing unit 97 is attached to the sensor case 92 when the sensor case 92 vibrates. It vibrates relatively.

  As shown in FIG. 7, a piezoelectric element 95 is accommodated in the sensor case 92. The piezoelectric element 95 is fixed to the rear plate of the sensor case 92 in a stationary state, and the weight 94 is in contact with the piezoelectric element 95 from the front by the spring force of the spring member 93. The weight 94 applies force to the crystal surface of the piezoelectric element 95 by the spring force of the spring member 93 in response to vibration applied to the sensor case 92, and the piezoelectric element 95 has a large amount of force applied from the weight 94. A voltage corresponding to the current is generated. The frequency of this voltage changes according to the frequency of the force applied to the crystal surface of the piezoelectric element 95, and the piezoelectric element 95 generates a pulse signal having an amplitude corresponding to the magnitude of the force applied to the crystal surface. Output at a frequency corresponding to the frequency of the force applied to the surface of the crystal. The natural frequency of the spring member 93 of the vibration sensor 90 is set to a value that resonates when vibration is applied to the game board 21 by hitting the machine frame. The player presses the button 96 on the machine frame. The vibration is set to a value that does not resonate with the vibration when hitting normally and the vibration when the pachinko hall employee normally opens and closes the front frame 5. The vibration sensor 90 is configured as described above.

  The display board box 76 is indirectly fixed to the game board 21 via the display base frame 43 and the decorative frame 41 as shown in FIG. Although this display board box 76 is indirectly in contact with the ball discharge case 61 through the game board 21 and the inner frame 2 but is not in direct contact with it, the player can move the game ball on the stage 50. When an impact force is applied to the game board 21 by striking the machine frame in order to change the moving direction, vibration is transmitted from the game board 21 to the vibration sensor 90 through the display board box 76, and the game ball starts with the winning opening 31. If the ball 35 falls off the ball receiving rail 82 of the ball discharge case 61 from each of the mouth 35, the release port 51, the big hit hole 52, and the lower special winning port 56, the vibration of the ball discharge case 61 causes the game board 21, the decorative frame 41, The light is attenuated by the display frame 43 and the display board box 76 and transmitted to the vibration sensor 90. The display board box 76 does not directly contact the award ball case 66 and the ball tank 67, and vibrations when the game ball rolls in the award ball case 66 and the ball tank 67, respectively. Each of the game board 21, the decorative frame 41, the display base frame 43 and the display board box 76 is attenuated and transmitted to the vibration sensor 90.

  As shown in FIG. 5, the vibration sensor 90 is connected to the main control circuit 70 via a sensor circuit 91. This sensor circuit 91 detects the rise of the pulse signal output from the vibration sensor 90 and outputs a detection signal to the main control circuit 70. The CPU 71 of the main control circuit 70 outputs a detection signal from the sensor circuit 91. In response to this, the INT interrupt processing is started. FIG. 9 shows the INT interrupt process. When the CPU 71 starts the INT interrupt process, the CPU 71 adds the unit value “1” previously recorded in the ROM to the edge counter in step S1. The edge counter is reset to “0” when the CPU 71 is turned on.

  The CPU 71 monitors the vibration state of the game board 21 based on the detection signal output from the sensor circuit 91. This vibration monitoring process is performed by handling a plurality of detection signals intermittently output from the sensor circuit 91 as a set of signal groups. As shown in FIG. If a new detection signal is not detected within a period from when the signal is detected until the signal group end value T1 (for example, 160 msec) elapses, the signal group ends when the signal group end value T1 elapses. When the detection signal is newly detected within the period from when the detection signal is detected until the signal group end value T1 elapses, as shown in FIG. Judge that

  The CPU 71 measures the duration of the signal group. When it is determined that the signal group is finished, the measurement result of the duration of the signal group is set to a lower limit value T2 (for example, 272 msec) and an upper limit value T3 (for example, 400 msec), respectively. Compare with The lower limit value T2 is a threshold value for determining whether or not the vibration is applied to the game board 21 but the vibration is ineffective vibration that does not change the rolling direction of the game ball. As shown in (c), when the measurement result of the duration of the signal group is equal to or lower than the lower limit value T2, it is not determined that the vibration is improperly applied. The upper limit value T3 is a threshold value for determining whether or not an error has occurred, and the CPU 71 has a case where the measurement result of the duration of the signal group is equal to or higher than the upper limit value T3 as shown in FIG. Is not determined to have been improperly vibrated. That is, as shown in each of (d) and (e) of FIG. 10, the CPU 71 improperly adds vibration when the measurement result of the duration of the signal group is within the range of the lower limit value T2 and the upper limit value T3. It is determined that

  FIG. 11 shows timer interrupt processing. This timer interruption process is started every time a predetermined time (for example, 4 msec) elapses for the CPU 71. When the timer interruption process is activated, the CPU 71 causes the game board 21 to perform a vibration monitoring process in step S11. The presence / absence of fraud to which vibration is applied is determined, a process according to the determination result of the presence / absence of fraud is performed in the abnormal process in step S12, and each of the normal game and the special game is performed in the normal process in step S13.

  FIG. 12 shows the vibration monitoring process of step S11, and the CPU 71 determines whether or not the timer enable flag is set to the on state in step S21. The timer enable flag is reset to the off state when the power is turned on. When the CPU 71 determines in step S21 that the timer enable flag is reset to the off state, the process proceeds to step S22, and the edge counter indicates “ It is determined whether or not it is reset to “0”. For example, when the first detection signal is output from the sensor circuit 91, it is determined that “edge counter> 0” in step S22, and the timer enable flag is set to the on state in step S23.

  When the CPU 71 sets the timer enable flag to the ON state in step S23, the signal group timer is reset to “0” in step S24, and the INT interrupt process of FIG. 9 is started based on setting the interrupt inhibition in step S25. Prohibit that. Then, the edge counter is reset to “0” in step S26, and the INT interrupt process of FIG. 9 is allowed to start based on releasing the interrupt prohibition setting in step S27, and the interval timer is set to “ Reset to “0”. The signal group timer measures the duration of the signal group based on the detection of the rising edge of the first pulse signal, and the interval timer detects the next detection signal after detecting the current detection signal. Interval time until the signal group timer and the interval timer are reset to “0” when the power is turned on.

  When the timer enable flag is on, the CPU 71 proceeds from step S21 to step S29. In step S29, the CPU 71 measures the duration of the signal group by adding the unit value ΔT (= 4 msec) to the signal group timer. By adding a unit value ΔT (= 4 msec) to the timer, the interval time of the detection signal is measured, and in step S31, the addition result of the interval timer is compared with the signal group end value T1 recorded in advance in the ROM.

  During the continuation of the signal group, the CPU 71 determines that “interval timer <signal group end value T1” in step S31, and in step S32, the noise determination value T4 (for example, 20 msec) recorded in advance in the ROM 72 as the addition result of the interval timer. ). FIG. 13A is an output waveform diagram of a detection signal when vibration is transmitted to the vibration sensor 90 through the game board 21 based on the player hitting the machine frame. In this case, since the detection signal is continuously output at an interval time less than the noise determination value T4, the CPU 71 determines that “interval timer <T4” in step S32 of FIG. Every time it is determined that “> 0”, the edge counter is reset to “0” in step S26, and the interval timer is reset to “0” in step S28.

  FIG. 13B shows detection when vibration noise (for example, vibration when the vehicle travels in the vicinity of the pachinko hall) transmitted to the vibration sensor 90 through the game board 21 is different from when the player hits the machine frame. It is an example of the output waveform figure of a signal. In this case, since the detection signal is output at an interval time equal to or greater than the noise determination value T4 after being output at an interval time less than the noise determination value T4, the CPU 71 newly outputs a detection signal after detecting the detection signal last time. Based on the passage of the noise determination value T4 without detection, it is determined in step S32 in FIG. 12 that “interval timer ≧ T4”, and in step S33, the addition result of the signal group timer is recorded in the ROM 72 in advance. Compare with the value T5 (eg 132 msec). Here, it is determined that “signal group timer <T5”, the signal group timer is reset to “0” in step S35, and the edge counter is compared with “0” in step S36.

  If the CPU 71 determines that “edge counter = 0” in step S36, it resets the timer enable flag to the OFF state in step S37, and if it determines that “edge counter> 0” in step S36, the CPU 71 performs step. By shifting to each of S25 to S27, the edge counter is reset to “0”. In any case, the interval timer is reset to “0” in step S28. That is, when vibration noise is transmitted to the vibration sensor 90 through the game board 21, the signal group timer and the interval timer are newly measured without determining that the vibration is improperly applied.

When vibration is transmitted from the game board 21 to the vibration sensor 90 based on the player hitting the machine frame, the CPU 71 sets “interval timer ≧ signal group end value T1” in step S31 of FIG. 12 after the end of the signal group. In step S38, the addition result of the signal group timer is compared with each of the lower limit value T2 and the upper limit value T3 recorded in advance in the ROM 72. Hereinafter, the processing content of the CPU 71 will be described for each waveform of the detection signal.
[1] When the duration of the signal group is not more than the lower limit value T2 or not less than the upper limit value T3 The CPU 71 determines in step 38 that “lower limit value T2 <signal group timer <upper limit value T3” is not satisfied, and in step S35 The timer is reset to “0”, and it is determined whether or not the edge counter is reset to “0” in step S36. If it is determined that “edge counter = 0”, the timer enable flag is reset to an OFF state in step S37. If it is determined that “edge counter> 0”, the process proceeds to steps S25 to S27. By shifting, the edge counter is reset to “0”. In either case, the interval timer is reset to “0” in step S28. That is, each of the signal group timer and the interval timer is newly determined without determining that the vibration is improperly applied in each of the case where the duration of the detection signal is the lower limit value T2 or less and the upper limit value T3 or more. Is measured.
[2] When the duration of the signal group is within the range between the lower limit value T2 and the upper limit value T3 The CPU 71 determines in step 38 that “lower limit value T2 <signal group timer <upper limit value T3”, and enters in step S39. It is determined whether the waiting time is being measured. The entry waiting time is started based on the start of opening of the upper special prize opening 45, and the game ball that has won a prize in the upper special prize opening 45 immediately before closing the upper special prize opening 45 is put in the jackpot 52. The measurement is stopped when the time required to enter after the upper special winning opening 45 is closed and the CPU 71 determines in step S39 that the entry waiting time is not being measured, step S35. Migrate to That is, an effective vibration capable of changing the rolling direction of the game ball from the game board 21 within a period different from the period from when the game ball wins the top special prize opening 45 until it enters the jackpot 52 is generated from the game board 21. When transmitted to the vibration sensor 90, each of the signal group timer and the interval timer is newly measured without determining that the vibration is improperly applied.

  When the CPU 71 determines that the approach waiting time is being measured in step S39, the vibration detection flag is set to an on state in step S40. This vibration detection flag is reset to the off state when the power is turned on, and the CPU 71 sets the vibration detection flag to the on state in step S40 so that the game ball wins the top special winning opening 45 and then the big hit hole It is recorded that an effective vibration capable of changing the rolling direction of the game ball has been applied from the game board 21 to the vibration sensor 90 within a period until entering the game 52.

  When the CPU 71 sets the vibration detection flag to ON in step S40, the CPU 71 adds the unit value “1” recorded in advance in the ROM 72 to the vibration detection counter in step S41, and proceeds to step S32. This vibration detection counter is reset to “0” when the power is turned on, and the effective vibration is detected during the period from when the game ball enters the upper special winning opening 45 until it enters the big hit opening 52. The number of frauds applied from 21 to the vibration sensor 90 is cumulatively measured.

  FIG. 14 shows the abnormality process of step S12, and the CPU 71 determines whether or not the abnormality detection flag is set to the on state in step S51. If it is determined that the abnormality detection flag is set to the on state, the process proceeds to step S52, and the abnormality detection flag is reset to the off state. Then, the process proceeds to step S53, and an abnormal command is transmitted to the hall computer corresponding to the external device. This abnormal command notifies the hall computer that a fraud that changes the rolling direction of the game ball has occurred by hitting the machine frame. The hall computer receives its abnormal command based on receiving the abnormal command. An abnormal message is displayed on the display, and the pachinko hall side is informed that a fraud that changes the rolling direction of the game ball has occurred by hitting the machine frame.

  When the CPU 71 transmits an abnormal command in step S53, the CPU 71 compares the addition result of the vibration detection counter with a determination value (for example, 2) recorded in advance in the ROM 72 in step S54. If it is determined that “vibration detection counter <determination value”, the process proceeds to abnormality countermeasure processing 1 in step S55. If it is determined that “vibration detection counter ≧ determination value”, the abnormality countermeasure in step S56 is performed. Move to processing 2.

  The abnormality countermeasure process 1 is a mild one of the abnormality countermeasure processes 1 to 2, and the CPU 71 transmits an abnormality notification command to the display control circuit 81 in the abnormality countermeasure process 1. This abnormality notification command instructs the display control circuit 81 to notify the occurrence of an abnormality. When the display control circuit 81 receives the abnormality notification command, the abnormality display command 44 displays an abnormality message “A game table is tapped. Do not please. ”Is displayed. The abnormality countermeasure process 2 is a serious one of the abnormality countermeasure processes 1 to 2, and the CPU 71 transmits an abnormality notification command to the display control circuit 81 in the abnormality countermeasure process 2 to thereby display an abnormality message on the symbol display 44. Is displayed and the coil of the relay 74 is turned off. In a state where the coil of the relay 74 is turned off, the driving power source of the firing solenoid 16 is cut off, and it becomes impossible to fire the game ball. For this reason, when the lower special prize opening 56 is opened in conjunction with the game ball entering the big hit hole 52 by vibration, the game ball cannot be awarded in the lower special prize opening 56.

According to the said Example 1, there exists the following effect.
A vibration sensor 90 having a cantilevered vibration sensing unit 97 was used. For this reason, the vibration sensing unit 97 does not vibrate in each of the small vibration that the player normally hits the button 96 and the small vibration when the store clerk of the pachinko hall normally opens and closes the front frame 5 of the machine frame, The vibration sensing unit 97 vibrates due to a large vibration hitting the machine frame. In addition, the vibration sensor 90 is mounted in a stationary state on the display board case 77 that is indirectly fixed to the game board 21 without directly contacting the ball discharge case 61, the prize ball case 66, and the ball tank 67. The high frequency vibration generated when the game ball passes through each of the ball discharge case 61 to the ball tank 67 is not directly transmitted to the vibration sensor 90, and the game board 21, the decorative frame 41, and the display base frame 43 Each display board box 76 is attenuated to a level below the detection level of the vibration sensor 90 and transmitted to the vibration sensor 90. For this reason, the vibration when the player hits the button 96 of the machine frame and the vibration when the store clerk of the pachinko hall normally opens and closes the front frame 5 of the machine frame and the game ball are the ball discharge case 61 to the ball tank 67. It is possible to prevent erroneous detection that a fraudulent act of hitting the machine frame with each of the vibrations when passing through the machine is performed, and only an illegal act of applying vibration to the game board 21 by hitting the machine frame is performed. It can be detected accurately.

  The natural frequency of the spring member 93 resonates when a vibration is applied to the game board 21 by hitting the machine frame 21. The vibration when the player hits the button 96 on the machine frame and the pachinko hall clerk Since the front frame 5 is set to a value that does not resonate with each of the vibrations when the front frame 5 is normally opened and closed, it is more accurately detected that an illegal act of applying vibration to the game board 21 by hitting the machine frame has been performed. it can. As the vibration sensor 90, a sensor that outputs a pulse signal having an amplitude corresponding to the magnitude of the force applied to the vibration sensor 90 at a frequency corresponding to the frequency of the force applied to the vibration sensor 90 is used. Therefore, when the vibration sensor 90 is shared between different models and the control program of the main control circuit 70 is set, the signal group end value T1, the lower limit value T2, the upper limit value T3, the noise determination value T4, and the noise determination value are set. The occurrence of fraud can be detected with high accuracy by adjusting T5 for each model. The vibration sensor 90 was attached to the rear surface of the display substrate case 77 having the largest area. Therefore, even if the impact force when the ball receiving rail 83 of the ball discharge case 61 receives the game ball is transmitted to the display substrate case 77, the rear surface of the display substrate case 77 is elastically deformed. Since transmission of vibration to the vibration sensor 90 is suppressed, it is not erroneously detected from this point that an illegal act has been performed by the impact force when the ball discharge case 61 receives a game ball.

  As shown in FIG. 15, an operation switch 101, an operation switch 102, an operation switch 103, an operation switch 104, and an operation switch 105 are connected to the main control circuit 70. Each of these operation switches 101 to 105 is mounted on the rear surface of the main circuit board, and the cover 64 of the ball discharge case 61 covers each of the operation switches 101 to 105 in an inoperable state in the closed state. Yes. The cover 64 of the ball discharge case 61 opens the operation switches 101 to 105 so that each of the operation switches 101 to 105 can be operated in an open state. The CPU 71 of the main control circuit 70 simultaneously activates any three of the operation switches 101 to 105. When it is determined that a special operation to be performed has been performed, the normal mode is changed to a special threshold setting mode, and when the threshold setting mode is set, a predetermined time is determined based on the threshold setting mode. Based on the elapse of time, the threshold setting mode is returned to the normal mode.

  In the threshold setting mode, the CPU 71 of the main control circuit 70 increases or decreases the signal group end value T1 from the standard value recorded in advance according to the operation content of the operation switch 101, and sets the lower limit value T2 in advance according to the operation content of the operation switch 102. Increase / decrease from the recorded standard value, increase / decrease the upper limit T3 from the pre-recorded standard value according to the operation content of the operation switch 103, and noise determination value T4 according to the operation content of the operation switch 104 The noise determination value T5 is increased or decreased from the standard value recorded in advance according to the operation content of the operation switch 105. These operation switches 101 to 105 constitute an operation means, and each of the signal group end value T1 to the noise determination value T5 is adjusted according to the operation content of the operation means in the threshold setting mode, and adjusted in the normal mode. Not.

  In each of the first and second embodiments, the vibration sensor 90 may be fixed to the decorative frame 41 fixed directly to the game board 21 without directly contacting the ball discharge case 61. In each of the first and second embodiments, the vibration sensor 90 may be fixed to the symbol display 44 that is indirectly fixed to the game board 21 without directly contacting the ball discharge case 61.

  In each of the first and second embodiments, a vibration sensor 90 that detects vibration based on a principle different from the piezoelectric type may be used. For example, when a player strikes the machine frame, the vibration sensing electrode is vibrated with respect to the pair of electrodes, and the vibration is detected according to the change in the capacitance between the electrodes. A capacitive vibration sensor may be used.

The figure which shows Example 1 (The figure which shows a pachinko game machine from the front) Figure showing the pachinko machine from the front with the front frame removed The perspective view which shows an inner frame from diagonally forward Figure showing the game board from the front Block diagram showing electrical configuration Sectional view along line X6 in FIG. (A) is sectional drawing which follows the X7 line | wire of FIG. 4, (b) is sectional drawing which shows the internal structure of a vibration sensor. Perspective view showing substrate case from diagonally forward Flow chart showing the INT interrupt processing of the main control circuit The figure which shows the output waveform of a vibration sensor when vibration is transmitted to a vibration sensor from a game board based on a machine frame being hit Flow chart showing timer interrupt processing of main control circuit Flow chart showing vibration monitoring processing of main control circuit The figure which shows the output waveform of the vibration sensor when vibration noise is transmitted from the game board to the vibration sensor Flowchart showing abnormality processing of main control circuit FIG. 5 equivalent diagram showing the second embodiment.

Explanation of symbols

  21 is a game board, 31 is a winning entrance (entrance entrance), 33 is a bowl (saddle member), 35 is a starting entrance (entrance entrance), 51 is a release entrance (entrance entrance), 52 is a big hit entrance (entrance) Mouth), 53 is a lower special prize opening (ball entrance), 61 is a ball discharge case (ball guide case), 66 is a prize ball case (ball guide case), 67 is a ball tank (ball guide case), and 77 is a display. A substrate case (sensor holding member / substrate case), 80 is a display circuit board (substrate), 90 is a vibration sensor, 92 is a sensor case, 95 is a piezoelectric element (electric element), and 97 is a vibration sensing unit.

Claims (1)

A game board on which game balls are fired,
A ball guiding case that is provided behind the game board as viewed from the player and guides the game ball;
A vibration sensor provided behind the game board as viewed from the player, for detecting that vibration is improperly applied to the game board;
A symbol display provided behind the game board as viewed from the player and held by a display frame;
A sensor holding member that is provided behind the game board as viewed from the player, is fixed to the display frame and does not directly contact the ball guiding case, and holds the vibration sensor;
The vibration sensor is
A hollow sensor case that is attached to the sensor holding member in a stationary state so as to vibrate together with the sensor holding member when the sensor holding member vibrates;
A vibration sensing unit that is provided inside the sensor case, has one end fixed to the sensor case, and that vibrates with respect to the sensor case when the sensor case vibrates;
A pachinko gaming machine provided with an electric element that is provided inside the sensor case and outputs a detection signal having a frequency corresponding to the frequency of the vibration sensing unit when the vibration sensing unit vibrates.

Images