JP7056690B2 - Pachinko machine - Google Patents

Description

The present invention relates to a gaming machine that displays a variable pattern of a pattern through the orbit of the orbiting body.

For example, there is a slot machine as a gaming machine that displays a variable pattern of a pattern through the orbit of an orbiting body. The slot machine is provided with a plurality of reels having a plurality of symbols attached to the outer peripheral portion, and a part of the symbols assigned to each reel can be visually recognized through a display unit. Then, when the player inserts a medal and operates the start lever, each reel starts rotating, and after each reel starts rotating, each reel is sequentially stopped by operating the stop button. In addition, a lottery is performed inside the slot machine on the condition that a medal is inserted and the start lever is operated, and the winning symbol is stopped on the valid line set in advance and the result of the lottery is won. A predetermined number of medals are paid out on condition that the medals are made to be used, and a predetermined game advantageous to the player is generated (see, for example, Patent Document 1).

In addition to the slot machine, the gaming machine includes a gaming machine capable of playing the same game as the slot machine by using a gaming ball instead of a medal as a gaming medium. In addition, there is also a pachinko machine that uses the above-mentioned orbiting body as a display unit for providing a player with an effect according to the result of an internal lottery.

A stepping motor is generally used as a driving means for orbiting the orbiting body as described above. In this case, when the lap start condition is satisfied, the driving by the stepping motor is started, and the speed shifts to the constant speed period after the acceleration period. Then, after this constant speed period is continued for a predetermined period, it is stopped based on the establishment of the lap stop condition.

Japanese Patent Application Laid-Open No. 2003-180936

Here, in a gaming machine such as the above example, there is a demand for a configuration capable of suitably accelerating the orbiting body, and there is still room for improvement in this respect.

The present invention has been made in view of the above-exemplified circumstances and the like, and provides a gaming machine capable of suitably accelerating the orbiting body in a configuration in which the orbiting body is rotated by using a stepping motor. The purpose is to do that.

The invention according to claim 1 in order to solve the above-mentioned problems includes an orbiting body having a plurality of types of patterns attached in the circumferential direction.
The driving means for rotating the orbiting body and
A drive control means that drives and controls the drive means,
Equipped with
The drive means is a stepping motor having a stator and a rotor, and rotating the orbiting body by switching the excitation phase of the drive means and rotating the rotor.
The drive control means
An initial drive control means that starts the rotation of the orbiting body and initially drives and controls the drive means so as to have a predetermined rotation speed.
After the execution of the initial drive control by the initial drive control means, the constant speed drive control means for controlling the drive means at a constant speed so that the predetermined rotation speed is maintained, and
Equipped with
The initial drive control means is a long / short setting means that allows a period in which the switching interval of the excitation phase is longer than before and a period in which the switching interval of the excitation phase is shorter than before during the period in which the initial drive control is executed. Equipped with
When the cycle when the drive control by the length setting means is executed and the switching interval becomes long or short is set to T, and the frequency at which the vibration intensity becomes large in the orbiting body rotating at the predetermined rotation speed is set to F. In addition, 1 / T ≠ F,
As the switching interval set by the length setting means, three or more types of switching intervals are set .

According to the present invention, it is possible to suitably accelerate the orbiting body in a configuration in which the orbiting body is rotated by using a stepping motor.

It is a front view of the slot machine in one Embodiment. It is a perspective view of the slot machine which shows the state which the front door is opened. It is an assembly perspective view of the left reel. It is a development view of the band-shaped belt which constitutes each reel. It is an electric block diagram of a slot machine. It is a flowchart which shows the timer interrupt processing. It is a flowchart which shows the normal process. It is a flowchart which shows the reel control processing. It is a schematic diagram which shows the operating principle of a stepping motor. (A) It is a connection diagram which shows the drive system of a stepping motor, and (b) is the figure which shows the drive characteristic of a stepping motor. It is explanatory drawing which shows the relationship between the excitation data and the excitation order pointer. It is explanatory drawing for demonstrating an example of the excitation pattern in the conventional slot machine. It is explanatory drawing for demonstrating an example of the excitation pattern in this slot machine. It is a figure for showing the time change of the number of steps with respect to one interrupt when the excitation pattern of FIG. 12 and FIG. 13 is applied. It is a flowchart which shows the reel rotation processing. It is a flowchart which shows the stepping motor control process. It is a flowchart which shows the motor control processing. It is a figure which shows the result when the vibration waveform in the constant speed state was measured about the reel unit manufactured by Example 1 and Example 2. It is a figure which shows the result of having made a mark at a predetermined place on the surface of the left reel, and measured the amount of fluctuation of the position of the mark with the execution of acceleration processing. FIG. 19 is an enlarged view showing a part of FIG. 19. It is explanatory drawing for demonstrating another example of the excitation pattern in this slot machine. (A) It is a figure which shows the result of having performed various evaluations about Example 1, and (b) is a figure which shows the result of having performed various evaluations about Example 2.

Hereinafter, an embodiment in the case where the present invention is applied to a slot machine which is a kind of gaming machine will be described in detail with reference to the drawings. FIG. 1 is a front view of the slot machine 10, and FIG. 2 is a perspective view of the slot machine 10 with the front door 12 opened.

As shown in FIG. 2, the slot machine 10 includes a housing 11 that forms an outer shell thereof. The housing 11 is formed in a box shape with an open front surface as a whole by fixing a plurality of wooden panels.

A front door 12 is attached to the front side of the housing 11. The front door 12 is supported by the housing 11 so as to be able to open and close the internal space of the housing 11 with the left side portion as a rotation axis. The front door 12 is locked in an unopenable state by a locking device 13 provided on the back surface thereof, and this locked state is released by an unlocking operation with a predetermined key on the key cylinder 14.

As shown in FIG. 1, a game panel 20 for notifying the player of the game state is provided near the center of the front door 12. The game panel 20 is formed so that three vertically long display window portions 21L, 21M, and 21R are arranged side by side. The display window portions 21L, 21M, 21R are made of a transparent or translucent material, and the inside of the slot machine 10 can be visually recognized through the display window portions 21L, 21M, 21R.

As shown in FIG. 2, the inside of the housing 11 is divided into upper and lower parts by a partition plate 30, and a reel unit 31 is attached to the upper part of the partition plate 30. The reel unit 31 includes a left reel 32L, a middle reel 32M, and a right reel 32R, which are formed in a cylindrical shape, respectively. Each reel 32L, 32M, 32R is rotatably supported so that its central axis is the rotation axis of the reel. The rotation axes of the reels 32L, 32M, 32R are arranged on the same axis extending in a substantially horizontal direction, and the reels 32L, 32M, 32R correspond one-to-one with the display window portions 21L, 21M, 21R. There is. Therefore, a part of the surface of each reel 32L, 32M, 32R is visible through the corresponding display window portions 21L, 21M, 21R, respectively. Further, when the reels 32L, 32M, 32R rotate in the forward direction, the surfaces of the reels 32L, 32M, 32R are projected as if they are moving from top to bottom through the display window portions 21L, 21M, 21R.

Each of these reels 32L, 32M, 32R is connected to a stepping motor 33, and each reel 32L, 32M, 32R can be rotationally driven individually, that is, independently by driving each stepping motor 33. It has become. Since each of these reels 32L, 32M, and 32R has the same configuration, the left reel 32L will be described here as an example based on FIG. Note that FIG. 3 is an assembly perspective view of the left reel 32L.

The left reel 32L includes a cylindrical skeleton member 41 forming a cylindrical cage, and a strip-shaped belt (not shown in FIG. 3) wound endlessly on the outer peripheral surface thereof. Then, it is attached to the cylindrical skeleton member 41 via a pair of sealing portions formed along both sides of the long side of the belt so as to maintain the wound state. A large number of symbols as identification information are printed on the outer peripheral surface of the belt at equal intervals. A boss portion 42 is formed in the central portion of the cylindrical skeleton member 41, and is attached to the drive shaft of the stepping motor 33 via a disk-shaped boss reinforcing plate 43. Therefore, when the drive shaft of the stepping motor 33 rotates, the cylindrical skeleton member 41 rotates around the drive shaft, and the left reel 32L rotates.

The stepping motor 33 is fixed to the side surface of the motor plate 44 arranged in an upright state in the reel unit 31 with screws 45. The motor plate 44 is provided with a reel index sensor 46 in which the light emitting element 46a and the light receiving element 46b are held at predetermined intervals. On the other hand, the base end portion 47b of the sensor cut van 47 extending in the radial direction is fixed to the boss reinforcing plate 43 integrated with the left reel 32L by a screw 48. The tip portion 47a of the sensor cut van 47 is bent at a substantially right angle and is aligned so that it can pass between both elements 46a and 46b of the reel index sensor 46. Then, each time the left reel 32L makes one rotation, the reel index sensor 46 detects the passage of the tip portion 47a of the sensor cut van 47, and each time the detection is performed, a detection signal is output to the main control device 70 described later. Therefore, the main control device 70 can confirm and correct the angular position of the left reel 32L for each rotation based on this detection signal.

The stepping motor 33 is set to rotate once by, for example, giving an excitation signal of 504 pulses, and the rotation position of the stepping motor 33, that is, the rotation position of the left reel 32L is controlled by this excitation signal.

On each belt of each reel 32L, 32M, 32R, a plurality of symbols, specifically 21 symbols, are drawn in the long side direction (circumferential direction) thereof. Therefore, it takes 24 pulses (= 504 pulses ÷ 21 symbols) to switch from one symbol to the next at a predetermined position. Then, based on the number of pulses from the time when the detection signal of the reel index sensor 46 is output, it is possible to recognize which symbol is visible from the display window portion 21L, or to display an arbitrary symbol from the display window portion 21L. It is possible to control the state so that it can be visually recognized.

Of the symbols attached to the reels 32L, 32M, 32R, the number of symbols that can be visually recognized as a whole through the display window portions 21L, 21M, 21R is mainly the length of the display window portions 21L, 21M, 21R in the vertical direction. Limited to a predetermined number determined by. In this embodiment, each reel has three reels. Therefore, when all the reels 32L, 32M, and 32R are stopped, 3 × 3 = 9 symbols are visible to the player.

Here, the symbols attached to the reels 32L, 32M, 32R will be described. FIG. 4 shows a design arrangement drawn on a belt wound around each of the left reel 32L, the middle reel 32M, and the right reel 32R. As shown in the figure, 21 symbols are provided in a row on each reel 32L, 32M, 32R. Numbers 1 to 21 are assigned to each reel 32L, 32M, 32R, but this is attached for convenience of explanation, and is not actually attached to the reels 32L, 32M, 32R. .. However, in the following description, the number will be used.

As the symbols, there are a "7" symbol (for example, the 20th left belt) and a "youth" symbol (for example, the 19th left belt) as the first special symbol for shifting to the big bonus game. In addition, there is a "BAR" symbol (for example, the 14th left belt) as a second special symbol for shifting to the regular bonus game. In addition, there is a "replay" symbol (for example, the eleventh left belt) as a third special symbol for shifting to the replay game. In addition, the "watermelon" symbol (for example, the 9th left belt), the "bell" symbol (for example, the 8th left belt), and the "cherry" symbol (for example, the left) as the small winning combination symbols for which the small winning combination is paid out. There is a fourth belt). As shown in FIG. 4, in the belt wound around each reel 32L, 32M, 32R, the number and arrangement order of various symbols are completely different.

The game panel 20 is provided with a total of five combination lines, three in parallel in the horizontal direction and two in the diagonal direction, so as to connect the display window portions 21L, 21M, and 21R.

Here, the number of payouts for each symbol in the case of winning a prize will be described. Regarding small role symbols, if the "watermelon" symbol is aligned with the left, middle, and right on the effective line, 15 medals will be paid out, and if the "bell" symbol is aligned with the left, middle, and right on the effective line. Eight medals are paid out, and two medals are paid out when the "cherry" symbol on the left reel 32L stops on the effective line. That is, the "cherry" symbols on the middle reel 32M and the right reel 32R have nothing to do with medal payout. In addition, as long as the "cherry" symbol is used, medals are paid out regardless of the combination with other symbols. When the "cherry" symbol is stopped, medals are paid out by multiplying the number of overlapping effective lines, and as a result, four medals are paid out in this embodiment.

If the "7" symbol or "Youth" symbol, which is a combination of the first special symbol (big bonus symbol), is aligned with the left, middle, and right on the valid line with the same symbol, the second special symbol (regular bonus symbol) If the "BAR" symbol, which is a combination of the above, is aligned with the left, middle, and right on the valid line, the medal will not be paid out. Even if the "replay" symbol, which is a combination of the third special symbols, is aligned with the left, middle, and right on the effective line, the medal will not be paid out, but a new game will be started without inserting medals. It becomes possible. In other cases, that is, if the "cherry" symbol of the left reel 32L does not stop on the effective line and the same symbols as left, middle, and right are not aligned on the effective line, no medal is paid out.

As shown in FIG. 1, a start lever 51 operated to start rotation of each reel 32L, 32M, 32R is provided on the lower left side of the game panel 20. When the start lever 51 is operated while the medal is inserted, the reels 32L, 32M, and 32R start to rotate all at once.

On the right side of the start lever 51, button-shaped stop buttons 52, 53, 54 that are operated to individually stop the rotating reels 32L, 32M, 32R are provided. The stop buttons 52, 53, 54 are arranged directly below the display window portions 21L, 21M, 21R corresponding to the reels 32L, 32M, 32R to be stopped, respectively. The stop buttons 52, 53, and 54 are in a state where they can be stopped after a predetermined time has elapsed from the start of rotation of the left reel 32L.

On the lower right side of the display window portions 21L, 21M, 21R, a medal insertion slot 55 for inserting a medal as an investment value is provided. As shown in FIG. 2, the medals inserted from the medal insertion slot 55 are guided to the hopper device 64 when the insertion is possible by the selector 61 provided on the back surface of the front door 12, and when the insertion is not possible, the medals are guided to the hopper device 64. The medal ejection port 17 provided at the lower part of the front surface of the front door 12 leads to the medal tray 18. The hopper device 64 has a function of paying out the medals stored in the storage tank to the medal tray 18 through the medal discharge port 17 when a prize corresponding to the awarding of medals is established on the valid line. There is.

Below the medal slot 55, as shown in FIG. 1, a return button 56 is provided, which is pressed when the medal inserted in the medal slot 55 is jammed in the selector 61. Further, on the lower left side of the display window portions 21L, 21M, 21R, first credit insertion buttons 57 to 59 for inserting a credited virtual medal as an investment value are provided.

A button-shaped switching button 60 is provided on the left side of the start lever 51. When the switching button 60 is on, the "credit mode" is set so that surplus inserted medals and winning medals up to a predetermined maximum value (for example, 50 medals) are stored and stored as credit medals. ". When the switching button 60 is in the off state, the "direct mode" is set so that the surplus inserted medals and the winning medals at the time of winning are paid out as actual medals.

The procedure for betting medals will be described. When one medal is inserted into the medal insertion slot 55 or when one virtual medal is inserted by operating the credit insertion buttons 57 and 59, the central line becomes the effective line. When two medals are inserted into the medal insertion slot 55 or when two virtual medals are inserted by operating the credit insertion buttons 58 and 59, a total of three medals including the center line, the upper line and the lower line are inserted. Each combination line of is an effective line. When three medals are inserted into the medal insertion slot 55 or when three virtual medals are inserted by operating the credit insertion button 59, the center line, the upper line, the lower line and a pair of diagonal lines are included. All five combination lines in total are valid lines.

When four or more medals are inserted into the medal slot 55, the surplus medals exceeding three are returned to the medal tray 18 by the selector 61 if the mode at that time is the direct mode. On the other hand, in the credit mode, it is saved as a virtual medal inside the slot machine. An upper limit is set for the number of stored medals (for example, 50), and when more medals are inserted, the medals are returned to the medal tray 18.

At the top of the front door 12, there is an upper lamp 22 that lights up and blinks as the game progresses, and a pair of left and right lamps that sound various sound effects as the game progresses and notify the player of the game state. The speaker 23 and an auxiliary display unit 24 such as a liquid crystal display that gives various information to the player are provided.

As shown in FIG. 2, a power supply device 65 is provided on the left side of the hopper device 64 inside the housing 11. The power supply device 65 has a power button 66 operated when the power is turned on or turned off, a reset button 67 for resetting various states of the slot machine 10, and setting states of the slot machine 10 from "setting 1" to "setting 1". It includes a setting key insertion hole 68, which is operated to change within the range of "setting 6".

Above the reel unit 31, a main control device 70 is attached to the back plate of the housing 11. The main control device 70 includes a main substrate, and the main substrate is housed in a substrate box as an encapsulating means made of a transparent resin material or the like. The board box includes a box base having a substantially rectangular parallelepiped shape and a box cover that covers an opening of the box base. The box base and the box cover are unopenably connected by a sealing unit as a sealing means, whereby the substrate box is sealed.

<Electrical configuration of slot machine 10>
Next, the electrical configuration of the slot machine 10 will be described with reference to the block diagram of FIG.

The main control device 70 is equipped with a microcomputer centered on a CPU 71 which is an arithmetic processing means. In addition to the power supply device 65, a clock circuit 74 that outputs a rectangular wave having a predetermined frequency, an input / output port 75, and the like are connected to the CPU 71 via an internal bus. The main control device 70 functions as a main board built in the slot machine 10.

On the input side of the main control device 70, there is a start detection sensor 51a that detects the operation of the start lever 51, a stop detection sensor 52a, 53a, 54a that individually detects the operation of each of the stop buttons 52, 53, 54, and a medal insertion slot. Insertion medal detection sensor 55a that detects the medals inserted from 55, credit insertion detection sensors 57a, 58a, 59a that individually detect the operation of each credit insertion button 57, 58, 59, switching to detect the operation of the switching button 60. The detection sensor 60a, the reel index sensor 46 that individually detects the rotation position (origin position) of each reel 32L, 32M, 32R, the payout detection sensor 64a that detects the medal paid out from the hopper device 64, and the operation of the reset button 67 are detected. Various sensors such as a reset detection sensor 67a and a setting key detection sensor 68a for detecting that a setting key has been inserted into the setting key insertion hole 68 are connected, and signals from these various sensors are transmitted via the input / output port 75. Is output to the CPU 71.

Further, a power failure monitoring circuit 65b provided in the power supply device 65 is connected to the input side of the main control device 70 via the input / output port 75. The power supply device 65 is equipped with a power supply unit 65a that supplies drive power to each electronic device of the slot machine 10 including the main control device 70, a power failure monitoring circuit 65b described above, and the like.

The power failure monitoring circuit 65b monitors the power cutoff state and generates a power failure signal not only when the power is cut off but also when the power supply is cut off by the power switch 66. Therefore, the power failure monitoring circuit 65b monitors the stabilized drive voltage of DC 24 volts in this example output from the power supply unit 65a, and determines that the power supply is cut off when this drive voltage drops to less than, for example, 10 volts. It is configured to output a power failure signal. The power failure signal is supplied to the CPU 71, and the CPU 71 recognizes the power failure signal to execute the power failure processing.

Each stepping motor 33 for rotating each reel 32L, 32M, 32R, a hopper device 64, a display control device 80, and the like are connected to the output side of the main control device 70 via an input / output port 75.

The display control device 80 is a control device for driving the upper lamp 22, the speaker 23, and the auxiliary display unit 24, and includes a substrate in which a CPU, ROM, RAM, and the like for driving these are integrated. Then, after receiving the signal from the main control device 70, the display control device 80 independently drives and controls the upper lamp 22, the speaker 23, and the auxiliary display unit 24.

The CPU 71 described above has a ROM 72 that stores various control programs and fixed value data executed by the CPU 71, and an operation that temporarily stores various data when executing the control program stored in the ROM 72. In addition to the RAM 73 for securing an area, as is well known, various processing circuits required in the slot machine 10 such as an interrupt circuit, a timer circuit, and a data transmission / reception circuit, and a credit counter for counting the number of credits, as is not shown, Various counters such as are built-in. A main memory as a storage means is configured by the ROM 72 and the RAM 73, and a program for executing the processes shown in the various flowcharts shown in FIGS. 6 and 6 is stored in the ROM 72 described above as a part of the control program.

The RAM 73 has a configuration in which a backup voltage is supplied from the power supply device 65 to hold data even after the power of the slot machine 10 is cut off, and the RAM 73 temporarily stores various data and the like. In addition to the memory and area of, a backup area is provided.

The backup area is an area for storing the stack pointer at the time of power failure, the values of each register, I / O, etc. when the power is cut off due to the occurrence of a power failure, and is a backup when the power failure is resolved. Based on the area information, the state of the slot machine 10 can be restored to the state before the power was cut off. Writing to the backup area is executed when the power is cut off by the power failure process, and restoration of each value written in the backup area is executed in the main process when the power is turned on. The NMI terminal (non-maskable interrupt terminal) of the CPU 71 is configured to input a power failure signal from the power failure monitoring circuit 65b when the power is cut off due to a power failure or the like. NMI interrupt processing as flag generation processing is immediately executed.

<Process executed by CPU 71 of main control device 70>
Next, each control process executed by the CPU 71 in the main control device 70 will be described.

The processing of the CPU 71 is roughly divided into a normal processing that is repeatedly executed after the main processing that is started when the power is turned on and a timer interrupt processing that is started by interrupting the normal processing periodically. For convenience of explanation, the timer interrupt processing will be described first, and then the normal processing will be described.

<Timer interrupt processing>
FIG. 6 is a flowchart of timer interrupt processing periodically executed by the main control device 70, and a timer interrupt is generated by the CPU 71 of the main control device 70, for example, every 1.49 msec.

First, in the register save process shown in step S101, the values of all the registers in the CPU 71 used in the normal process described later are saved in the backup area of the RAM 73. In step S102, it is confirmed whether or not the power failure flag is set, and if the power failure flag is set, the process proceeds to step S103 to execute the power failure processing. The power failure flag is set based on the fact that a signal indicating that a power failure has occurred is received from the power failure monitoring circuit 65b, and in the power failure processing, it is possible to return to the state before the power cutoff after the power is restored. Execute the process.

If the power failure flag is not set in step S102, or after the execution of step S103, the process proceeds to step S104. In step S104, a process of clearing the watchdog timer that initializes the value of the watchdog timer for monitoring the occurrence of a malfunction is performed. In step S105, an interrupt end declaration process for issuing interrupt permission to the CPU 71 itself is performed. In step S106, a stepping motor control process for driving each stepping motor 33 is performed in order to rotate each reel 32L, 32M, 32R. In step S107, a sensor monitoring process for monitoring the status of various sensors (see FIG. 5) connected to the input / output port 75 is performed. In step S108, a timer calculation process for subtracting the values of each counter and timer is performed.

In step S109, a command output process for transmitting a command or the like to the display control device 80 is performed. In step S110, a port output process for outputting data corresponding to the I / O device from the input / output port 75 is performed. In step S111, the value of each register saved in the backup area in the previous step S101 is restored to the corresponding register in the CPU 71. After that, in step S112, an interrupt enable process for permitting the next timer interrupt is performed, and this series of timer interrupt processes is terminated.

<Normal processing>
Next, a normal process for performing main control related to the game will be described with reference to the flowchart of FIG. 7.

First, in step S201, it is determined whether or not a medal has been bet. When the medal is bet, it is subsequently determined in step S202 whether or not the start lever 51 has been operated. If both step S201 and step S202 are YES, the lottery process of step S203 is executed.

In the lottery process, a random number table for determining whether to win or not is selected based on the current setting state of the slot machine 10, the number of medals bet, the high or low probability of small winning combination, etc., and the random number table selected in this way is started. When the lever 51 is operated, the random number latched by the random number counter is illuminated to draw a winning combination. Then, if any of the winning combinations is won, the winning flag corresponding to that winning combination is set. Further, a slip table for reel stop control according to the lottery result is determined, and this is stored in the slide table storage area of the RAM 73. Here, the slip table defines a symbol to be stopped when the symbol on the predetermined effective line at the timing when the stop buttons 52 to 54 are pressed differs from the symbol to be stopped on the effective line. It is a table that defines how much the reel should be slid so that it stops on the effective line of.

As the lottery role, a small role corresponding to the payout of medals such as a watermelon role, a bell role, and a cherry role, a replay role, a big bonus role, and a regular bonus role are set.

After executing the lottery process in step S203, the reel control process is executed in step S204.

In the reel control process, as shown in the flowchart of FIG. 8, first, the weight process is performed in step S301. This weight process is a process of waiting without starting the rotation of the reel in the current game until a predetermined time (for example, 4.1 seconds) elapses from the time when the rotation of the reel is started in the previous game. Therefore, even if the player bets a medal and operates the start lever 51, the reels 32L, 32M, 32R may not rotate immediately.

Following the weight processing, the reel rotation processing in step S302 is performed to rotate each reel 32L, 32M, 32R. After that, the process proceeds to step S303, and it is determined whether or not a predetermined time (for example, 8 seconds) has elapsed since the left reel 32L started rotating. When the predetermined time has elapsed, the process proceeds to step S304, and whether or not any of the stop buttons 52 to 54 is pressed to generate a reel stop command, more specifically, from the stop detection sensors 52a to 54a. It is determined whether or not the ON signal is received. If the stop command has not been generated, the process returns to step S304.

If any of the stop buttons 52 to 54 is pressed in step S304 to generate a stop command, the process proceeds to step S305 to perform reel stop processing. In this reel stop processing, the reel corresponding to the pressed stop button is stopped, but the winning combination is won in the winning combination lottery, and if the winning flag is set, it is stored in the slide table storage area of the RAM 73. With reference to the slide table, control is performed so that the winning wins are lined up on a predetermined valid line as much as possible. For example, if you win the role of lining up the "watermelon" symbols on the lower line and the stop button is pressed at the timing when the "watermelon" symbols stop on the upper line, the symbol 2 will stop on the lower line. Slide the reel by one. However, since the range in which the watermelon can be slid is predetermined (for example, up to four symbols), the "watermelon" symbol may not stop on the lower line depending on the timing when the stop button is pressed.

Subsequently, in step S306, it is determined whether or not the stop command this time is the first stop command, that is, whether or not the stop button is pressed while all three reels are rotating. In the case of the first stop command, the process proceeds to step S307 and the slip table change process is performed. In this slide table change process, for example, it is determined whether or not a combination of roles occurs when trying to align the roles on the winning valid line, and if the combination of roles does not occur, the process proceeds to the next step as it is. When a combination of roles occurs, the winning valid line is changed to another valid line, and the slip table is changed to match the changed valid line, and then the next step is performed. Here, the combination of roles means that a plurality of roles occur at the same time, for example, when a "watermelon" symbol appears on the lower line on the left reel 32L when trying to align the "watermelon" symbols on the upper line. Refers to the case of doing.

After step S307 or when a negative determination is made in step S306, it is determined in step S308 whether or not all the rotations of the left, middle, and right reels 32L, 32M, and 32R have stopped. If the step S308 is NO, the process returns to step S304, and if the step S308 is YES, the payout determination process is performed in the following step S309, and then this process ends.

In the payout determination process, it is determined whether or not the winning combination is lined up on the valid line, and when the winning combination is not lined up on the valid line, 0 is set in the planned payout number storage area of the RAM 73, and the winning combination is lined up on the valid line. When it is, it is determined whether or not the winning combination matches the winning combination, and when it does not match, an error is displayed by the upper lamp 22 or the like and 0 is set in the planned payout number storage area. If they match, set the number of winning combinations and the corresponding number of payouts in the storage area.

Returning to the description of the normal process (FIG. 7), after executing the reel control process in step S204, the medal payout process is executed in step S205. In the medal payout process, the medals or virtual medals set in the planned payout number storage area in step S309 are given to the player.

After that, the special game state process is executed in step S206. In the special game state processing, a special role (big bonus role or regular bonus role) is won in the normal game, and the winning combination is selected on condition that the combination of symbols corresponding to the winning combination is established on one of the valid lines. It shifts to the corresponding bonus game, and when the end condition is satisfied, the process of ending the bonus game and returning to the normal game is executed. During the bonus game, the winning probability of the small role is higher than during the normal game, and especially when the lottery is won, the bell role where the prize is established regardless of the operation timing of each stop button 52 to 54 is the most. There is a high probability that you will win. Further, the bonus game ends when the number of medals to be paid out in the bonus game reaches a predetermined number. The predetermined number of cards is set more in the big bonus game than in the regular bonus game, for example, the former is 350 cards and the latter is 120 cards. After executing the special game state process in the normal process, the process returns to step S201.

<Operating principle of stepping motor 33>
Next, the stepping motor 33 for rotating each reel 32L, 32M, 32R will be described in more detail.

FIG. 9 is a schematic diagram showing the operating principle of the stepping motor 33. FIG. 10A is a connection diagram showing the drive system of the stepping motor 33, and FIG. 10B is a diagram showing the drive characteristics of the stepping motor. FIG. 11 is an explanatory diagram showing the relationship between the excitation data and the excitation order pointer.

As the stepping motor 33, in the present embodiment, a hybrid (HB) type two-phase stepping motor that employs a 1-2 phase excitation method is used. The stepping motor is not limited to the hybrid type and the two-phase, and various stepping motors such as a four-phase or five-phase stepping motor can be used.

The hybrid type stepping motor 33 includes a rotor 91 arranged in the center and a stator 90 arranged around the rotor 91 and having first to fourth poles 92 to 95.

The rotor 91 is composed of a front rotor 91a magnetized on the N pole and a rear rotor 91b magnetized on the S pole, and has teeth and teeth provided around the front rotor 91a. It is attached to the rotating shaft in a state of being relatively shifted by 1/2 pitch so that the teeth provided around the rear rotor 91b are located between the rotors. A cylindrical magnet (not shown) is attached between the front rotor 91a and the rear rotor 91b.

As shown in FIG. 10A, the excitation coil L0 and the excitation coil L2 are bifilar-wound around the first pole 92 and the third pole 94, and the winding end end of the excitation coil L0 and the winding start end of the excitation coil L2 are formed. The wire is connected, and a predetermined DC power supply + B (for example, +24 volt) is applied here. Similarly, the excitation coil L1 and the excitation coil L3 are bifilar-wound on the second pole 93 and the fourth pole 95, and the winding end end of the excitation coil L1 and the winding start end of the excitation coil L3 are connected to each other. Power + B is applied.

Here, the phase in which an excitation signal is applied to the excitation coil L0 of the first pole 92 to excite the first pole 92 to the S pole and the third pole 94 to the N pole is defined as the A phase, and vice versa. A phase in which an excitation signal is applied to the excitation coil L2 of the third pole 94 to excite the first pole 92 to the N pole and the third pole 94 to the S pole is referred to as an inverse A phase. Similarly, the phase in which an excitation signal is applied to the excitation coil L1 of the second pole 93 to excite the second pole 93 to the S pole and the fourth pole 95 to the N pole is defined as the B phase, and vice versa. A phase in which an excitation signal is applied to the excitation coil L3 of the fourth pole 95 to excite the second pole 93 to the N pole and the fourth pole 95 to the S pole is referred to as an inverse B phase.

When the stepping motor 33 is a one-phase excitation drive system, the rotor 91 is rotated clockwise or counterclockwise by sequentially applying excitation signals to the A phase, the B phase, the inverse A phase, and the inverse B phase. It can be driven to rotate.

That is, for example, when the A phase is first energized, the protrusion of the first pole 92 which has become the S pole and the tooth of the front rotor 91a, the protrusion of the third pole 94 which has become the N pole, and the tooth of the back rotor 91b When they face each other by suction force and then energize the B phase, the protrusion of the second pole 93 that became the S pole and the tooth of the front rotor 91a, and the protrusion of the fourth pole 95 that became the N pole and the back rotation When the teeth of the child 91b face each other by the suction force and then the reverse A phase is energized, the protrusion of the first pole 92 that becomes the N pole, the tooth of the rear rotor 91b, and the third pole 94 that becomes the S pole The protrusion and the tooth of the front rotor 91a face each other by suction force, and then when the reverse B phase is energized, the protrusion of the second pole 93 that has become the north pole and the tooth of the rear rotor 91b and the tooth of the back rotor 91b are exposed to each other. The protrusion of the 4th pole 95 and the tooth of the front rotor 91a face each other by the suction force. By exciting in this order, the rotor 91 rotates clockwise in FIG.

On the other hand, in the present embodiment, a 1-2 phase excitation drive in which 1-phase excitation and 2-phase excitation are alternately performed is adopted. In the 1-2 phase excitation drive, excitation is performed according to the following excitation sequences (excitation order) of (1) to (8).

That is, since only one set of excitation is one-phase excitation and two-phase excitation is two-phase excitation, as shown in FIG. 11, the 1-2-phase excitation drive energizes (1) phase A. (1 phase excitation), (2) both A and B phases are energized (2-phase excitation), and so on, (3) B phase is energized, and (4) both B phase and inverse A phase are energized. Energize, energize (5) reverse A phase, (6) energize both reverse A phase and reverse B phase, (7) energize reverse B phase, (8) both reverse B phase and A phase It is a drive system that energizes the engine and then returns to (1). In the present embodiment, since the reel is configured to make one revolution by the excitation signal of 504 pulses, the angle change based on the excitation signal of one pulse, that is, the angle change per step is about 0.714 °.

The excitation signal for the stepping motor 33 is given to the motor driver 96 as the excitation data shown in FIG. This excitation data is stored in the RAM 73 of the main control device 70, and appropriate excitation data is output to the input / output port 75 by timer interrupt processing. The excitation phase for the stepping motor 33 is determined by this excitation data, and an excitation signal (current) is applied to the excitation phase.

The exciting phase at the time of initial excitation of the stepping motor 33 is two-phase excitation. In the case of one-phase excitation, the rotational torque generated is smaller than that in the case of two-phase excitation, so that a sufficient initial velocity may not be obtained. If a sufficient initial velocity cannot be obtained, there is a high possibility of step-out, so two-phase excitation is preferable for the initial excitation. Further, from the time when the brakes (braking) are applied to the reels 32L, 32M, 32R based on the pressing operation of the stop buttons 52 to 54 until the reels are actually stopped, the reels 32L, 32M, and 32R are slid and stopped by a predetermined step angle. When it slips and stops, it is necessary to perform the next acceleration process while absorbing the deviation of this angle, and it is preferable that the electromagnetic attraction force at the initial excitation is as large as possible.

On the other hand, when stopping the stepping motor 33, 4-phase excitation is performed immediately after 2-phase excitation is performed. When braking is performed only by two-phase excitation, there is a concern that the rotational speed will drop sharply due to the strong braking force, and the player will feel uncomfortable with the movement of the reels 32L, 32M, 32R during braking. To. On the other hand, the reels 32L, 32M, 32R can be smoothly stopped by performing 4-phase excitation immediately after 2-phase excitation.

When the stepping motor 33 is used, the drive characteristics as shown in FIG. 10B are required.

This drive characteristic can be roughly divided into an acceleration period Ta and a constant speed period from when the start lever 51 is operated until the stepping motor 33 starts rotating and reaches a constant constant speed rotation, and the constant speed period is from the stop button 52 to It is divided into a maintenance period Tb in which the rotation speed is maintained until the 54 is pressed, and a stop period Tc in which the rotation speed is stopped with a predetermined slip based on the press operation of the stop buttons 52 to 54.

While there is no regulation on the length of the acceleration period Ta, there is a regulation that the time when the acceleration period Ta and the maintenance period Tb are added when the stop buttons 52 to 54 are not operated must be 30 seconds or more. ing. Regarding the stop period Tc, it is required to stop the stepping motor 33 within a maximum of about 190 msec after operating the stop buttons 52 to 54.

<Drive control of stepping motor 33>
Next, the configuration of the drive control of the stepping motor 33 will be described.

As described above, the stepping motor 33 transitions to a constant speed rotation state after an acceleration period, but since the acceleration period is a forced waiting time for the game, the stepping motor 33 is fixed as soon as possible from the accelerated state. It is desirable to make a transition to the state of high-speed rotation. For that purpose, the excitation phase of the stepping motor 33 may be switched quickly, but doing so may cause step-out or rotational instability.

In particular, in the stepping motor 33, when the teeth of the rotor 91 are attracted to the protrusions of the poles 92 to 95 during the initial excitation, the initial rotational vibration of the rotor 91 (micro vibration accompanied by reciprocating motion) occurs. Occur. Although it depends on the specifications of the reel unit 31, for example, one reciprocating reciprocation occurs in 30 msec for about 5 to 6 reciprocations. Therefore, it is necessary to set the switching mode of the excitation phase in the acceleration period while taking into consideration such initial rotational fluctuation.

As a method of accelerating the stepping motor 33 while suppressing the influence of the initial rotational fluctuation, a method of maintaining the initial excitation state to some extent can be considered. For example, a configuration in which the excitation phase is switched at the timing shown in FIG. 12 can be considered. In this case, after the state set to 2-phase excitation as the initial excitation is held for 130 interrupts (that is, for 130 times of timer interrupt processing), the state is switched to 1-phase excitation, and the state is held for 8 interrupts. It is set to switch to two-phase excitation, and then gradually shorten the switching interval of the excitation phase. With this configuration, 193.7 msec (= 1.49 msec x 130 interrupts) is set as the initial excitation period, during which the initial rotational fluctuation can be eliminated. However, in this configuration, the acceleration period becomes long.

On the other hand, in the present embodiment, instead of securing a long initial excitation period as described above, the excitation phase is changed before the excitation phase switching interval is gradually shortened in order to achieve a constant speed state. By setting a period in which the switching interval is gradually lengthened, the above-mentioned initial rotational fluctuation is eliminated at an early stage. The specific excitation pattern that enables such acceleration processing differs depending on the specifications of the reel unit 31, and examples thereof include the excitation pattern as shown in FIG.

Hereinafter, the excitation pattern will be described in detail with reference to FIG. 14 in addition to FIG.

FIG. 13 is an explanatory diagram for explaining an example of the excitation pattern in the present embodiment, and FIG. 14 shows 1 when the excitation pattern of FIG. 12 is applied and when the excitation pattern of FIG. 13 is applied. It is a figure for demonstrating the time change of the number of steps with respect to an interrupt. In FIG. 14, the case where the excitation pattern shown in FIG. 13 is applied is shown by a solid line, and the case where the excitation pattern shown in FIG. 12 is applied is shown by a broken line.

The acceleration table for realizing the excitation pattern as shown in FIG. 13 is stored in the ROM 72 in advance. In this acceleration table, at least the data of the acceleration counter and the data of the switching interval corresponding to the data of the acceleration counter on a one-to-one basis are set.

In the excitation pattern shown in FIG. 13, a long / short period T1 is set in which the switching interval of the excitation phase is long or short from the timing of the initial excitation. Specifically, first, two-phase excitation is maintained over two interrupts as initial excitation. The period during which such initial excitation is held is equal to or less than the longest period (7 interrupts) held in the predetermined exciting phase in the long-short period T1, and more specifically, the shortest held in the predetermined exciting phase in the long-short repetition period. It is a period.

After that, the first lengthening period T11 in which the switching interval of the exciting phase gradually becomes longer, the shortening period T12 in which the switching interval of the exciting phase gradually shortens, and the second lengthening period in which the switching interval of the exciting phase gradually becomes longer. The period T13 is set in this order. In each of the lengthening periods T11 and T13, as shown in FIG. 14, since the number of steps for one interrupt decreases with the passage of time, the switching speed of the excitation phase gradually decreases. On the other hand, in the shortening period T12, as shown in FIG. 14, since the number of steps for one interrupt increases with the passage of time, the switching speed of the excitation phase gradually increases.

As shown in FIG. 13, these lengthening periods T11 and T13 and shortening period T12 are set by utilizing switching intervals of three or more types of excitation phases. Specifically, it is set by using five types of excitation phase switching intervals. For each period T11 to T13 in detail, the first lengthening period T11 is set by using four types of switching intervals of 2 interrupts, 3 interrupts, 4 interrupts, and 7 interrupts. Further, the shortening period T12 continuous with the first lengthening period T11 is set by using three types of switching intervals so as to be gradually shortened from the state of 7 interrupts to 4 interrupts and 3 interrupts. .. Further, the second lengthening period T11 continuous with the shortening period T12 is set by using three types of switching intervals so as to gradually increase from the state of 3 interrupts to 5 interrupts and 7 interrupts. .. By utilizing the switching intervals of three or more types of excitation phases in this way, it becomes easy to set the long-short period T1 to a desired mode, and the design can be facilitated. The switching interval to be used is not limited to 5 types, and may be 4 types or 6 or more types. Further, although the lengths of the respective periods T11 to T13 are different, they may be the same length.

As described above, the excitation phase is switched by the timer interrupt process, so the shortest switching interval is one interrupt, and when the constant speed state is reached, the excitation phase is switched at the one interrupt interval. However, each switching interval in the long-short period T1 is set to an interval longer than the shortest switching interval, that is, an interval of two or more interrupts. This makes it possible to prevent step-out from occurring when an external force for eliminating rotational fluctuation is positively applied through switching of the excitation phase. Further, although the switching intervals in the long and short period T1 are set so as not to be continuously the same, there may be a range in which they are continuously the same.

In the long-short period T1, as described above, the switching interval becomes longer or shorter and vibrates. That is, as shown in FIG. 14, in the long-short period T1, the number of steps for one interrupt decreases or increases with the passage of time. As a result, the force applied to the rotor 91 is increased or decreased more than before.

Here, when a vibration sensor is attached to one reel 32L, 32M, 32R and the relationship between the vibration intensity and the frequency is measured in a state where the reel is rotating in a constant speed state, "predetermined frequency x n (n). : Natural number) ”increased the vibration intensity, and it was found that the frequency corresponds to the frequency of the above-mentioned initial rotational sway. However, this rotational sway is such that the player cannot recognize it. Further, the value of the "predetermined frequency" changes depending on the torque of the stepping motor 33 used, the moment of inertia of the reel used, and the like.

The frequency when the switching interval is lengthened or shortened in the long / short period T1 (hereinafter, also referred to as “long / short frequency”) is higher than the case where the long / short period T1 is not set even when the frequency matches the above “predetermined frequency × n”. Therefore, it is possible to suppress the initial rotational fluctuation at an early stage, but it is preferable to make the "long / short frequency" different from the "predetermined frequency x n".

For example, in the configuration to which the excitation pattern shown in FIG. 13 is applied, the fourth acceleration order and the eighth acceleration order have the same switching interval, so this range can be regarded as one cycle. The time for one cycle is the product of 19 interrupts, which is the sum of the switching intervals of the 5th acceleration sequence to the 8th acceleration sequence, and the timer interrupt cycle (1.49 msec), which is 28.31 msec. It becomes. Then, the above "long and short frequency" becomes about 35 Hz. On the other hand, since the above-mentioned "predetermined frequency" in the reel unit 31 to which the excitation pattern shown in FIG. 13 was applied was found to be 20 Hz by an experiment, the above-mentioned "long-short frequency" has a value different from the above-mentioned "predetermined frequency". Become.

For example, it is possible to suppress the initial rotational fluctuation at an early stage by making the "long-short frequency" the same as the "predetermined frequency x n" and making the phase different from the initial rotational fluctuation. .. However, a sensor for detecting the rotation stop position of the reels 32L, 32M, 32R is not provided, and the stop position is not strictly controlled when the rotation of the reels 32L, 32M, 32R is stopped, so theoretically. The guided rotation stop position and the actual rotation stop position will be different from each other. In particular, when the rotation is stopped, as described above, four-phase excitation is performed in order to smooth the movement of the reels 32L, 32M, 32R during braking, but in this case, the rotation stop position is easily displaced. Four types of one-phase excitation types are set as the deviation pattern of the rotation stop position, and after the rotation stop, the brake is stable at the one-phase excitation position even if braking is performed by two-phase excitation or four-phase excitation. Therefore, there are four types. On the other hand, by making the frequencies different from each other as described above, it is not necessary to grasp the phase, and it is possible to suppress the initial rotational fluctuation reliably and early.

When the two frequencies are different in this way, the "long and short frequencies" are preferably different from the "predetermined frequency x n" by "predetermined frequency" x 0.1 or more, and "predetermined frequency" x It is preferable that the difference is 0.2 or more. Further, in order to suppress the occurrence of step-out while allowing the player to recognize that the reels 32L, 32M, 32R are smoothly rotating in the long-short period T1, the above-mentioned "long-short frequency" is 10 Hz or more and 50 Hz or less. It is preferably 15 Hz or more and 45 Hz or less, more preferably. In addition, by setting the frequency within the range, step-out occurs during low-voltage drive, step-out occurs when torque fluctuates, and step-out occurs when drive voltage fluctuates. It can be suitably suppressed.

The long / short period T1 is set to 35 interrupts, that is, 52.15 msec (= 1.49 msec × 35 interrupts). This is a period shorter than the period required for the initial rotational fluctuation to disappear (for example, 150 msec to 180 msec) when the initial excitation state by the two-phase excitation is maintained. Further, the long / short period T1 is a period longer than the period for one cycle when the switching interval of the excitation phase is lengthened or shortened. However, the period is shorter than the period for two cycles. By making the long-short period T1 longer than the period for one cycle in this way, it is possible to suppress the above-mentioned initial rotational sway at an early stage. Further, by making it shorter than the period for two cycles, it is possible to shorten the acceleration period.

Even when T1 has passed for a long period of time, the above-mentioned initial rotational sway has not completely disappeared. However, at the timing when the long-short period T1 has elapsed, the initial rotational fluctuation is suppressed to some extent (for example, about 50%) as compared with the timing at which the excitation is started, so that the switching interval is gradually shortened thereafter. In the process, the acceleration of the reels 32L, 32M, 32R can be visually improved, and the initial rotational fluctuation can be eliminated. By terminating the long-short period T1 before the initial rotational sway completely disappears in this way, the acceleration period can be shortened. It is also possible to reduce the data capacity.

In the acceleration period, as shown in FIG. 13, after the long-short period T1, a stepwise shortening period T2 is set in which the switching interval of the excitation phase is stepwise shortened in order to bring the constant velocity state. That is, in the stepwise shortening period T2, as shown in FIG. 14, the number of steps for one interrupt gradually increases.

In this case, as shown in FIG. 13, the final switching interval in the long / short period T1 is set to 7 interrupts, which is the longest switching interval, and in the stepwise shortening period T2, one interrupt is used from the longest switching interval. The switching interval is shortened so that the switching interval is shortened. Further, when the switching interval is 4 interrupts or 3 interrupts, the same switching interval is set over 6 times of switching of the excitation phase. When the switching interval is 2 interrupts, the same switching interval is set over 7 times of excitation phase switching. After that, the switching interval becomes one interrupt, and the acceleration period ends. After the acceleration period ends, the switching interval is maintained by one interrupt, and the constant speed state is reached.

By setting the excitation pattern as described above, while suppressing step-out and unstable rotation and improving the appearance of the reels 32L, 32M, 32R at the time of acceleration, the above-mentioned initial rotation It is possible to reduce the shaking at an early stage, and it is possible to shorten the acceleration period. Specifically, as shown in FIG. 14, it took 300 msec or more to reach the constant speed state in the excitation pattern as shown in FIG. 12, whereas in the excitation pattern as shown in FIG. 13, the constant speed state is reached. It only takes about 160 msec by then.

Next, specific processing contents executed by the CPU 71 will be described.

First, the reel rotation process will be described with reference to the flowchart of FIG. The reel rotation process is executed in step S302 of the reel control process (FIG. 8).

In the reel rotation processing, the timer interrupt processing is first prohibited in step S401, and "30" is set in the acceleration counters of the reels 32L, 32M, 32R in the following steps S402 to S404. The acceleration counter is provided in the RAM 73, and the CPU 71 grasps the switching timing of the excitation phase in the acceleration period of the reels 32L, 32M, 32R based on the numerical information of the acceleration counter. Then, in step S405, after the timer interrupt processing is permitted, the reel rotation processing is terminated.

Next, the stepping motor control process will be described with reference to the flowchart of FIG. The stepping motor control process is executed in step S106 of the timer interrupt process (FIG. 6).

First, in step S501, it is determined whether or not control of any of the stepping motors 33 is necessary. In step S501, after making an affirmative determination in step S202 of the normal process (FIG. 7), an affirmative determination is made until all the reels 32L, 32M, 32R stop rotating. If a negative determination is made in step S501, the control process is terminated as it is, and if an affirmative determination is made in step S501, the process proceeds to step S502.

In step S502, a process of grasping the rotation position of the reels 32L, 32M, 32R to be processed is executed based on the detection result of the reel index sensor 46 and the number of times the excitation data is output. Further, in step S503, the braking start timing of the reels 32L, 32M, 32R to be processed is determined based on the operation timings of the stop buttons 52 to 54 corresponding to the reels 32L, 32M, 32R to be processed and the slip table. Execute the process to grasp.

In the following step S504, the motor control process is executed. In the motor control process, excitation data for rotation control of the stepping motor 33 is generated, and the generated excitation data is stored in the RAM 73.

In the following step S505, it is determined whether or not the motor control process is completed for all the rotating reels. If it is not finished, the processes of steps S502 to S504 are executed for the remaining reels, and if it is finished, the process proceeds to step S506.

In step S506, excitation data for each of the rotating reels 32L, 32M, 32R is output to the input / output port 75, and then this control process is terminated. Since the output to the input / output port 75 is the data writing process to the corresponding output port of the input / output port 75, the motor driver 96 is supplied with the excitation data at the same time as writing the excitation data to the input / output port 75. become. As a result, the stepping motor 33 immediately performs the energization process on the exciting phase designated by the excitation data, and the excitation process on the rotor 91 is performed.

Next, the motor control process in step S504 will be described with reference to the flowchart of FIG.

In the motor control process, the switching interval counter, the acceleration counter, and the excitation order pointer provided in the RAM 73 are used. The acceleration counter is as described above. The number of timer interrupts corresponding to the switching interval of the excitation phase is set in the switching interval counter. The excitation order pointer is a pointer used when determining the excitation phase for the stepping motor 33. When the 1-2 phase excitation stepping motor 33 is used, 1-phase excitation and 2-phase excitation are alternately performed, and the phase excitation patterns at that time are 8 patterns as shown in FIG. The value (0 to 7) of the excitation order pointer specifies which excitation data is acquired as output excitation data at which phase excitation and which is temporarily stored in the RAM 73.

In the motor control process, first, in step S601, it is determined whether or not the target reels 32L, 32M, 32R are braking. If braking is not in progress, the numerical information of the switching interval counter is subtracted by 1 in step S602, provided that the numerical information of the switching interval counter is "1" or more, and after the subtraction in step S603. It is determined whether or not the numerical information of is "0". If the numerical information is not "0", the motor control process is terminated as it is, and if it is "0", the process proceeds to the process after step S604.

In step S604, the acceleration table as shown in FIG. 13 is read from the ROM 72, and in step S605, the switching interval data corresponding to the value of the current acceleration counter in the acceleration table is set in the switching interval counter. For example, at the start of rotation of the reels 32L, 32M, 32R, the reel rotation process (FIG. 15) is executed, so that the numerical information of the acceleration counter is "30" corresponding to the first acceleration order in the acceleration table. It has become. In this case, in step S605, the numerical information of "2" is set in the switching interval counter.

In the following step S606, the excitation order pointer update process is executed. Specifically, the numerical information of the excitation order pointer is added by 1, and when the numerical information after the addition exceeds the maximum value "7" of the excitation order pointer, the numerical information is cleared to "0". do. After that, in step S607, the excitation data table as shown in FIG. 11 is read from the ROM 72, and the excitation data corresponding to the numerical information of the current excitation order pointer is read. Then, the read excitation data is stored in the RAM 73 as the current excitation data for the reels 32L, 32M, 32R that are the execution targets of the motor control process.

In the following step S608, the numerical information of the acceleration counter is subtracted by 1 on condition that the numerical information of the acceleration counter is "1" or more. As a result, when the next excitation phase switching is executed for the reels 32L, 32M, 32R to be processed this time, the switching interval data corresponding to the numerical information of the acceleration counter after the subtraction is set. In this case, as described above, the process of step S608 is executed on the condition that the numerical information of the acceleration counter is "1" or more, so that the numerical information of the acceleration counter is already "0". Is maintained in that state. Further, when the numerical information of the acceleration counter is "0", the switching interval is one interrupt as shown in FIG. Therefore, once the numerical information of the acceleration counter becomes "0", affirmative determination is made in step S603 every time the timer interrupt process is executed once, and the switching of the excitation phase is numerical information of the excitation order pointer. Execute according to. This state is the constant speed state.

After executing the process of step S608, it is determined whether or not it is the braking start timing of the reels 32L, 32M, 32R to be processed in step S609. If it is not the braking start timing, the motor control process is terminated as it is, and if it is the braking start timing, the braking setting process is executed in step S610 and then the motor control process is terminated.

In the braking setting process, the control data for braking is read from the ROM 72 so that the four-phase excitation is performed immediately after the two-phase excitation is performed. By executing the braking setting process, in the next motor control process for the reels 32L, 32M, 32R to be processed, an affirmative determination is made in step S601, and the braking process in step S612 is executed. As a result, in the stepping motor 33 corresponding to the reels 32L, 32M, 32R to be processed, after performing 2-phase excitation for 1 interrupt, 4-phase excitation is performed for a braking period (for example, 10 interrupts). conduct.

By driving and controlling the stepping motor 33 using the acceleration table as described above, it becomes possible to control the switching interval, that is, the number of steps for one interrupt in the manner shown by the solid line in FIG. It is possible to reduce the initial rotational sway at an early stage.

<Example>
Hereinafter, a configuration for executing the above-mentioned acceleration process will be described in more detail by way of examples, but the present invention is not limited thereto.

<Example 1>
Polycarbonate resin, belt length 754.5 mm, wall thickness 0.35 mm, weight 16. By winding a 2 g belt and further supporting the cylindrical skeleton member 41 on a motor plate 44 to which a stepping motor 33 (BH252574608 manufactured by Brother Enterprise Co., Ltd.) is fixed as shown in FIGS. 2 and 3. A reel was made. Further, three reels 32L, 32M, 32R were manufactured by the same manufacturing method and installed in the housing 11 as shown in FIG.

<Example 2>
Polycarbonate resin, belt length 822.3 mm, wall thickness 0.35 mm, weight 19. By winding an 8 g belt and further supporting the cylindrical skeleton member 41 on a motor plate 44 to which a stepping motor 33 (BH25254614 manufactured by Brother Enterprise Co., Ltd.) is fixed as shown in FIGS. 2 and 3. A reel was made. Further, three reels 32L, 32M, 32R were manufactured by the same manufacturing method and installed in the housing 11 as shown in FIG.

<Measurement of vibration waveform>
With respect to the reel unit 31 manufactured according to Example 1 and Example 2, a vibration sensor was attached to the left reel 32L, and the vibration waveform in a constant speed state was measured. The results are shown in FIG. As a result, it was found that the vibration acceleration of Example 1 increased at about 20 Hz × n (n = 1, 2, 4). Further, in Example 2, it was found that the vibration acceleration increased at about 35 Hz × n (n = 1, 2, 4). The results for the middle reel 32M and the right reel 32R are the same as those for the left reel 32L.

<Evaluation at the time of acceleration>
For Example 1, control processing as shown in FIGS. 15 to 17 was performed using an excitation data table as shown in FIG. 11 and an acceleration table as shown in FIG. 13. In this case, a mark was placed at a predetermined position on the surface of the left reel 32L, and the amount of change in the position of the mark due to the execution of the acceleration process was measured by taking an image and performing image analysis. The results are shown in FIGS. 19 and 20. When the switching interval of the excitation phase was lengthened or shortened in the long / short period T1, the time for one cycle was 28.31 msec, and the above-mentioned "long / short frequency" was about 35 Hz.

FIG. 20 is an enlarged view showing the range of 0 to 80 msec in FIG. Further, the "theoretical position" is the amount of fluctuation of the left reel 32L theoretically derived based on the acceleration table, and the "measured position 1" to the "measured position 4" are the left reels actually measured using the above marks. It is a fluctuation amount of 32 L. In this case, as described above, four types of rotation stop position deviation patterns are set as one-phase excitation types, and it is assumed that braking is performed by two-phase excitation or four-phase excitation after rotation stop. Since it is stable at the one-phase excitation position, there are four types. Therefore, by making a one-to-one correspondence with each rotation stop position so that the position of the mark before the start of the acceleration process is different and performing the acceleration process in each case, the "measured position 1" to the "measured position 4" are performed. 4 types of results were obtained.

As shown in FIGS. 19 and 20, for any of the "measured position 1" to "measured position 4", by the time the long-short period T1 elapses (specifically, by the time 52.15 msec elapses), the above It was confirmed that the initial rotational sway was suppressed to some extent and completely disappeared in the subsequent gradual shortening period T2.

The above test was carried out in the same manner as in the case of Example 1 except that the table shown in FIG. 21 was used instead of the table shown in FIG. 13 for Example 2. .. Although the illustration of the test result is omitted, as in FIGS. 19 and 20, the initial rotational fluctuation is suppressed to some extent by the time when the long-short period T1 elapses (specifically, by the time 68.54 msec elapses). It was confirmed that it disappeared completely in the subsequent gradual shortening period T2. When the switching interval of the excitation phase was lengthened or shortened in the long / short period T1, the time for one cycle was 34.27 msec, and the above-mentioned "long / short frequency" was about 29 Hz.

Incidentally, although not shown, the shortening period T12 is not set, the stepwise shortening period T2 is set including the long and short period T1, and the time from the initial excitation to the end of the stepwise shortening period T2 is described above. When the setting was the same as in the case of Example 1 or the above-mentioned Example 2, step-out occurred with a high probability.

<Evaluation when "long and short frequencies" are changed>
For the first embodiment, each acceleration table is set so that the "long and short frequencies" are about 10 Hz, about 20 Hz, about 35 Hz, about 40 Hz, and about 50 Hz, respectively, and each case is shown in FIG. The control process as shown in FIGS. 15 to 17 was performed 10 times each using the excitation data table, and the “smoothness of acceleration” was visually evaluated. The result is shown in FIG. 22 (a).

In the case of 10 Hz, the reels 32L, 32M, 32R may appear to be stopped due to the switching interval of the excitation phase being too long, which is a defect. At 20 Hz and 40 Hz, there were cases where acceleration was performed smoothly and cases where acceleration was not performed smoothly. This is because, depending on the stop position of the reels 32L, 32M, 32R when the drive control is started, setting the long-short period T1 acts to positively suppress the above-mentioned initial rotational fluctuation, and its action. It is presumed that this is due to the fact that there are cases where On the other hand, it was good at 50 Hz and particularly good at 35 Hz.

Further, for each of the above frequencies, the evaluation of "low voltage start", which is an evaluation of whether or not step-out occurs when the start is performed at a voltage (10 V) lower than the normal drive voltage (24 V), and the torque. The evaluation of "torque and voltage fluctuation resistance", which is an evaluation of whether or not step-out occurs when the voltage is changed or the voltage is changed, was performed 10 times each. This result is also shown in FIG. 22 (a).

In the case of 10Hz, 20Hz and 50Hz, step-out occurred for "low voltage start". Further, in the case of 50 Hz, step-out also occurred in "torque and voltage fluctuation resistance". On the other hand, in the case of 35 Hz and 40 Hz, step-out did not occur in any of "low voltage start" and "torque and voltage fluctuation resistance".

For the second embodiment, each acceleration table is set so that the "long-short frequency" is about 10 Hz, about 29 Hz, about 35 Hz, and about 50 Hz, respectively, and the "acceleration" is the same as in the case of the first embodiment. "Smoothness", "low voltage start" and "torque, voltage fluctuation resistance" were evaluated. The result is shown in FIG. 22 (b).

In the case of 10 Hz and 50 Hz, the evaluation was the same as in the case of Example 1 above. In the case of 35Hz, the evaluation of "low voltage start" and "torque and voltage fluctuation resistance" is good, but the "smoothness of acceleration" is smooth when acceleration is performed and when acceleration is smooth. There were cases where it wasn't done. In the case of 29 Hz, the evaluations of "low voltage start" and "torque and voltage fluctuation resistance" were good, and "smoothness of acceleration" was particularly good.

<Other embodiments>
The content is not limited to the description of the above-described embodiment, and may be implemented as follows, for example. Incidentally, each of the following configurations may be individually applied to the above embodiment, or may be partially or wholly combined and applied to the above embodiment.

(1) In order to suppress the initial rotational fluctuation of the stepping motor 33, the exciting voltage is increased or decreased instead of the configuration in which the force applied to the rotor 91 is increased or decreased by lengthening or shortening the switching interval of the exciting phases during the acceleration period. The force applied to the rotor 91 may be increased or decreased by causing the rotor 91 to increase or decrease. In this case, the excitation voltage may be increased or decreased in the process of gradually shortening the switching interval, and the period during which the excitation phase switching is repeated at one switching interval longer than in the constant speed state. May be set and performed during that period.

(2) A configuration in which the switching interval of the excitation phase is lengthened or shortened during the acceleration period as in the above embodiment and a configuration in which the excitation voltage is increased or decreased as in the above (1) may be combined. In this case, the force applied to the rotor 91 can be finely controlled.

(3) The length of the switching interval of the excitation phase is not limited to the configuration starting from the timing of the initial excitation, and the switching interval is set to a predetermined excitation phase for a longer time than the longest interval when the switching interval is lengthened. After holding, the configuration may be such that the length of the switching interval of the excitation phase is started. In this case, although the acceleration period is longer than that in the case of the above embodiment, it is possible to improve the efficiency of reducing the initial rotational sway.

(4) 1 / T when the period for lengthening or shortening the switching interval is T is limited to a configuration in which the frequency F at which the vibration intensity of the reels 32L, 32M, 32R becomes large in the constant speed state is different. However, both may be the same. In this case, by controlling the stop rotation position of the reels 32L, 32M, 32R so as to always correspond to a predetermined one phase, the phase when the switching interval is lengthened or shortened is different from the phase of the initial rotation fluctuation. It is preferable to have a phase. As a method of controlling the stop rotation position, a method of braking the reels 32L, 32M, 32R only by two-phase excitation instead of four-phase excitation can be considered. In addition to this, a sensor capable of detecting the rotation stop position of the reels 32L, 32M, 32R is provided, and the reels 32L, 32M, after the rotation is stopped so that the stop rotation position corresponds to a predetermined one phase, A method of slightly rotating the 32R can be considered.

(5) The period for lengthening or shortening the switching interval is not limited to a configuration in which the switching interval is one cycle or more and less than two cycles, and may be two or more cycles or three or more cycles.

Further, the period for lengthening or shortening the switching interval is not limited to the configuration in which the initial rotational sway is terminated before the initial rotational sway completely disappears, and the configuration may be terminated after the initial rotational sway completely disappears. ..

(6) When the switching interval is lengthened or shortened, the configuration is not limited to the configuration in which the lengthening period is initially set, and the configuration may be such that the shortening period is set first.

(7) In the above embodiment, an example in which the present invention is embodied is shown for the slot machine 10, but the slot machine 10 may be applied to a gaming machine in which a slot machine and a pachinko machine are fused. That is, the present invention may be applied to a gaming machine having a ball throwing and ball paying function such as a pachinko machine instead of the medal throwing and medal paying function among slot machines.

Further, the present invention may be applied to a configuration in which a reel unit is used as a pattern display device for teaching a player the result of an internal lottery as an effect in a pachinko machine.

<About the invention group extracted from the above embodiment>
Hereinafter, the characteristics of the invention group extracted from the above-described embodiments will be described while showing the effects and the like as necessary. In the following, for the sake of easy understanding, the corresponding configurations in the above-described embodiment are appropriately shown in parentheses or the like, but the present invention is not limited to the specific configurations shown in the parentheses or the like.

Features 1. Circular bodies (reels 32L, 32M, 32R) with multiple types of patterns attached in the circumferential direction,
A driving means (stepping motor 33) for rotating the orbiting body and
Drive control means (function to execute reel control process and stepping motor control process in CPU 71) that drives and controls the drive means, and
Equipped with
The drive means is a stepping motor having a stator (stator 90) and a rotor (rotor 91), and the drive means is excited to rotate the rotor to rotate the orbiting body.
The drive control means
Initial drive control means (when the acceleration counter is 1 or more in the CPU 71, the processes of steps S602 to S608 are executed) for initially driving and controlling the drive means so as to start the rotation of the orbiting body and achieve a predetermined rotation speed. Function) and
After the initial drive control is executed by the initial drive control means, the constant speed drive control means (when the acceleration counter is "0" in the CPU 71) controls the drive means to drive at a constant speed so that the predetermined rotation speed is maintained. (Function to execute the process of step S602 to step S608) and
Equipped with
In the initial drive control means, the force for rotating the rotor is higher than before by changing an element other than the number of excitation phases during the period in which the initial drive control is executed. Increase / decrease setting means that allows an increase period and a decrease period to exist (a function of executing the processes of steps S602 to S608 when the acceleration counter is "30" to "23" in the CPU 71). A gaming machine characterized by being equipped with.

According to the feature 1, the force for rotating the rotor is positively increased or decreased during the period when the initial drive control is executed, so that the rotational fluctuation generated when the initial drive control is started is suppressed. It is possible to apply a force that cancels the rotation to the rotor, and it is possible to positively reduce the rotational fluctuation. This makes it possible to shorten the period required to reach a predetermined rotation speed while suppressing the occurrence of step-out and unstable rotation.

Feature 2. Circular bodies (reels 32L, 32M, 32R) with multiple types of patterns attached in the circumferential direction,
A driving means (stepping motor 33) for rotating the orbiting body and
Drive control means (function to execute reel control process and stepping motor control process in CPU 71) that drives and controls the drive means, and
Equipped with
The drive means has a stator (stator 90) and a rotor (rotor 91), and is a stepping motor that rotates the orbiter by switching the excitation phase of the drive means and rotating the rotor. can be,
The drive control means
Initial drive control means (when the acceleration counter is 1 or more in the CPU 71, the processes of steps S602 to S608 are executed) for initially driving and controlling the drive means so as to start the rotation of the orbiting body and achieve a predetermined rotation speed. Function) and
After the initial drive control is executed by the initial drive control means, the constant speed drive control means (when the acceleration counter is "0" in the CPU 71) controls the drive means to drive at a constant speed so that the predetermined rotation speed is maintained. (Function to execute the process of step S602 to step S608) and
Equipped with
The initial drive control means is a long / short setting means that allows a period in which the switching interval of the excitation phase is longer than before and a period in which the switching interval of the excitation phase is shorter than before during the period in which the initial drive control is executed. A gaming machine characterized by comprising (a function of executing the processing of steps S602 to S608 when the acceleration counters are "30" to "23" in the CPU 71).

According to the feature 2, since the switching interval of the excitation phase is lengthened and shortened during the period in which the initial drive control is executed, the force for rotating the rotor is positively increased or decreased. As a result, it is possible to apply a force to the rotor that cancels the rotational sway that occurs when the initial drive control is started, and it is possible to positively reduce the rotational sway. Therefore, it is possible to shorten the period required to reach the predetermined rotation speed while suppressing the occurrence of step-out and the unstable rotation.

Furthermore, according to this configuration, since it is only necessary to adjust the switching interval of the excitation phase, as described above, the configuration is simplified and the design is facilitated as compared with the configuration in which the drive voltage is raised or lowered, for example. It is possible to produce excellent effects.

Feature 3. Let T be the cycle when the drive control by the length setting means is executed and the switching interval becomes long or short.
When the frequency at which the vibration intensity increases in the orbiting body rotating at the predetermined rotation speed is set to F.
The gaming machine according to feature 2, wherein 1 / T ≠ F.

Since there are a plurality of stop rotation positions of the rotor, there are a plurality of types of rotational fluctuation phases when the initial drive control is started. In this case, assuming that the frequency when the switching interval is lengthened is the same as the frequency of the rotational fluctuation, when the phases are in phase, the rotational fluctuation is increased or the rotational fluctuation is continued. It is expected that the period will be lengthened. On the other hand, according to the feature 3, since the frequency when the switching interval is lengthened and the frequency of the rotational sway are different, the occurrence of the above-mentioned inconvenience is suppressed, and the early reduction of the rotational sway is achieved. It will be possible to do it more reliably.

Features 4. The gaming machine according to feature 3, wherein the 1 / T is larger than 10 Hz and smaller than 50 Hz.

According to the feature 4, it is possible to obtain the excellent effects as described above while improving the characteristics at the time of starting at a low voltage, the torque fluctuation resistance, the voltage fluctuation resistance and the like.

It should be noted that the configuration of the above feature 3 or 4 is more effective when applied to the configuration of "the drive control means excites all phases when the rotation of the orbiting body is stopped". That is, in the case of the configuration in which all the phases are excited at the time of stopping in this way, the orbiting body can be stopped smoothly, but the rotation stop position becomes irregular. On the other hand, according to the configuration of the above feature 3 or 4, it is possible to reduce the rotational fluctuation regardless of the rotation stop position of the rotating body.

Features 5. The gaming machine according to any one of features 2 to 4, wherein three or more types of switching intervals are set as the switching intervals set by the length setting means.

According to the feature 5, it is possible to finely set the mode in which the switching interval is lengthened or shortened, and it is possible to facilitate the work in designing the drive control pattern for reducing the rotational fluctuation.

Features 6. The gaming machine according to any one of features 2 to 5, wherein the length setting means starts control for lengthening or shortening the switching interval from the start of the initial drive control.

According to the feature 6, it is possible to reduce the rotational fluctuation at an early stage, and it is possible to facilitate the design of the switching interval when the predetermined rotational speed is subsequently set.

Features 7. The constant speed drive control means sets the switching interval to a specific interval so that the rotation speed of the orbiting body becomes the predetermined rotation speed.
The gaming machine according to any one of features 2 to 6, wherein the switching interval set by the length setting means is longer than the specific interval.

According to the feature 7, it is possible to surely apply a force for reducing the rotational sway to the rotor during the period in which the switching interval is lengthened or shortened.

Features 8. In the initial drive control means, after the drive control by the length setting means, the switching interval is gradually shortened so that the rotation speed of the orbiting body becomes the predetermined rotation speed (in the CPU 71). The gaming machine according to any one of features 2 to 7, further comprising a function of executing the process of steps S602 to S608 when the acceleration counter is "22" to "1".

According to the feature 8, since the period for setting the predetermined rotational speed is clearly distinguished from the period for positively reducing the rotational sway, the rotational sway is made by lengthening the switching interval as described above. It is possible to set the rotation speed of the rotating body to a predetermined rotation speed while suppressing the occurrence of step-out and the unstable rotation.

Features 9. The game according to feature 8, wherein the switching interval finally set by the length setting means is the longest switching interval among the switching intervals set during the drive control period by the length setting means. Machine.

According to the feature 9, in the configuration in which the rotational fluctuation is reduced by lengthening the switching interval as described above, when the rotational speed of the orbiting body is gradually increased so as to reach a predetermined rotational speed. It is possible to reduce the rotation speed at the start. This makes it possible to set the rotation speed of the rotating body to a predetermined rotation speed while suppressing the occurrence of step-out and unstable rotation.

Features 10. The gaming machine according to feature 8 or 9, wherein the period during which the drive control by the length setting means is executed is shorter than the period during which the drive control by the stage setting means is executed.

According to the feature 10, it is possible to secure a certain period for achieving a predetermined rotation speed while shortening the period for reducing the rotational fluctuation. This makes it possible to shorten the period required to reach a predetermined rotation speed while suppressing the occurrence of step-out and unstable rotation.

Features 11. The drive control by the length setting means is described in any one of features 8 to 10, characterized in that the drive control by the length setting means is terminated before the rotational fluctuation of the rotor generated when the initial drive control is started disappears. Gaming machine.

By reducing the rotational sway of the rotating body to some extent during the period in which the switching interval is lengthened or shortened, the rotational sway disappears in the period in which the subsequent switching interval is gradually shortened. In this case, according to the feature 11, since the period for lengthening the switching interval is terminated before the rotational fluctuation of the rotating body disappears, it is possible to shorten the period required for reaching the predetermined rotation speed. Become.

Features 12. A starting operation means (start lever 51) operated to start the rotation of the orbiting body, and
Stop operation means (stop buttons 52 to 54) operated to stop the rotation of the orbiting body, and
Equipped with
The drive control means is driven so as to start the rotation of the orbiting body based on the operation of the starting operation means and stop the rotation of the orbiting body based on the operation of the stop operation means. The gaming machine according to any one of features 1 to 11, characterized in that the means is driven and controlled.

In the game machine, it is possible to exert the excellent action and effect as described above.

The basic configuration of the gaming machine to which each of the above features can be applied is shown below.

Pachinko gaming machine: An operating means operated by a player, a game ball launching means for launching a game ball based on the operation of the operating means, a ball passage for guiding the launched game ball to a predetermined game area, and a game. A gaming machine that includes each gaming component arranged in an area and grants a privilege to a player when a gaming ball passes through a predetermined passing portion of each gaming component.

Rotating machine such as a slot machine: A player starts the rotation of the orbiting body based on the operation of the starting operation means, stops the rotation of the orbiting body based on the operation of the stopping operation means, and responds to the pattern after the stop. A gaming machine that gives special benefits to.

10 ... Slot machine, 31 ... Reel unit, 32L, 32M, 32R ... Reel, 33 ... Stepping motor, 51 ... Start lever, 52-54 ... Stop button, 70 ... Main controller, 71 ... CPU, 72 ... ROM, 73 ... RAM, 90 ... stator, 91 ... rotor, 96 ... motor driver.

Claims (1)

An orbiter with multiple types of patterns attached in the circumferential direction,
The driving means for rotating the orbiting body and
A drive control means that drives and controls the drive means,
Equipped with
The drive means is a stepping motor having a stator and a rotor, and rotating the orbiting body by switching the excitation phase of the drive means and rotating the rotor.
The drive control means
An initial drive control means that starts the rotation of the orbiting body and initially drives and controls the drive means so as to have a predetermined rotation speed.
After the execution of the initial drive control by the initial drive control means, the constant speed drive control means for controlling the drive means at a constant speed so that the predetermined rotation speed is maintained, and
Equipped with
The initial drive control means is a long / short setting means that allows a period in which the switching interval of the excitation phase is longer than before and a period in which the switching interval of the excitation phase is shorter than before during the period in which the initial drive control is executed. Equipped with
When the cycle when the drive control by the length setting means is executed and the switching interval becomes long or short is set to T, and the frequency at which the vibration intensity becomes large in the orbiting body rotating at the predetermined rotation speed is set to F. In addition, 1 / T ≠ F,
A gaming machine characterized in that three or more types of switching intervals are set as the switching intervals set by the length setting means .

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