JPS6150632B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pachinko game machine, and more particularly to a pachinko game machine in which the payout rate can be adjusted without adjusting the nails formed on the game board.

In general, pachinko gaming machines have become widespread and are popular among players as one of the convenient cash registers.
As is well known, pachinko gaming machines have multiple safe holes and winning ball devices (yakumono) arranged on the game board, and a large number of nails are planted on the board surface near the entrances of the safe holes and the yakumono. There is. and,
When a player drives a pachinko ball along a game board, the falling direction of the ball is changed by the action of the nail and the ball falls, with a certain probability of landing in a safe hole or a yakumono. At this time, a certain number of prize balls are released each time the player enters the safe hole or the Yakumono. At this time, the payout rate of prize balls is determined by the intervals and angles of the many nails formed on the board. Therefore, a pachinko game hall with a good ball payout rate is popular with players, and the number of visitors and sales of the game hall are determined by the quality of the ball payout rate. However, if the ball payout rate is made too high, it is undesirable for the game hall operator to run the game in the red. Therefore, conventionally, in order to make it desirable for the management of the game hall and to allow a large number of players to enter, a nailer adjusts the nails formed on the game board surface for each pachinko machine based on the previous day's ball payout rate. , the ball payout rate of each pachinko machine was adjusted.

However, the conventional method of adjusting the payout rate by adjusting the nails of each pachinko machine requires the nailer to have many years of experience and skill, and the nailer's adjustment of the nails is difficult to predict. There is a problem that there is a gap between the ball payout rate and the actual ball payout rate, and that it takes a lot of effort to adjust the dozens to hundreds of pachinko machines installed in the gaming hall. Ta. Therefore, there has been a need for a pachinko game machine that allows the ball payout rate to be easily adjusted even by a non-skilled nailer and allows the ball payout rate to be adjusted extremely quickly.

Therefore, an object of the present invention is to provide a pachinko game in which the labor required for nail adjustment is reduced, the ball payout rate can be easily and quickly adjusted even by non-experts, and this is achieved with a relatively simple configuration. The goal is to provide opportunities.

In summary, the present invention provides conditions for disposing a winning ball device including an opening/closing plate that can be opened on the game board so that pachinko balls can easily win, and commanding the opening/closing plate of the winning ball device to be opened depending on the gaming state. An opening control circuit is provided to control opening and closing of the opening/closing plate for a certain unit time in response to the change in temperature. This opening control circuit is
The device includes a switching means, a multivibrator, and a unit time variable adjustment means. The unit time for controlling the opening and closing of the opening and closing plate of the winning ball device is configured so that it can be varied by a minute amount of time by an adjustment operation by an attendant at the game hall, and the opening and closing time of the opening and closing plate of the winning ball device can be extended or shortened by a minute amount of time. By changing the opening time of the opening/closing plate of the winning ball device, the ball output rate is adjusted.

FIG. 1 is an external view of a pachinko game machine according to an embodiment of the present invention. In the figure, on the game board of the pachinko game machine 10 of this embodiment, there are a plurality of safe holes 11a, 11b, a specific passage area 11c, yakumono 12a, 12c, and a winning ball device (a third ball device described later).
) 30a, 30b (explained in the figure) and an out ball inlet 13 are formed. Here, safe hole 11
A, 11b are given conditions that allow them to open the winning ball device depending on the winning balls. Yakumono 12a-12
c opens the ball receiving piece when the first ball wins, and closes the ball receiving piece when the second ball wins. The winning ball devices 30a, 30b are capable of changing the opening time in accordance with the opening condition in order to adjust the ball output rate.

Although not shown, a large number of nails are formed on the surface of the game board, so that it is possible to adjust the number of winning balls in the safe hole or the Yakumono hole. However, in the pachinko game machine of this embodiment, the winning ball devices 30a, 30 do not need to be adjusted.
The ball output rate is adjusted by controlling to extend or shorten the predetermined unit time for opening the ball by a minute amount of time.

Further, preferably, the driven ball is in the safe hole 11a,
A score display (for example, a segment display) 14 is provided at the top of the game board in order to display the points awarded for winning in the game board 11b or passing through the specific passage area 11c, or the cumulative value of the points. .

Below the front frame of the pachinko game machine 10,
A ball waiting gutter 15, a ball handle 16, a prize ball discharge port 17, a prize ball tray 18, and a prize ball discharge port 171 are provided. Here, when a plurality of balls are put in, the ball waiting gutter 15 guides the balls to the ball hitting position so that they can be hit one by one, and also functions as an upper receiving tray. The ball-striking handle 16 rotates a ball-striking hammer (25 shown in FIG. 2, which will be described later), which will be described later, in response to a player's rotation operation, thereby adjusting the timing and force of hitting the ball into the game board. It is. The prize ball release port 17 receives balls released from a prize ball release mechanism (not shown) according to the winning balls that have entered the safe hole, the specific passing area, or the Yakumono, into the ball waiting gutter 15.
It is something that is released into the world. The prize ball discharge port 171 is for discharging surplus balls overflowing from the batted ball waiting gutter 15 to the prize ball receiving tray 18.

Furthermore, more preferably, the opening command button 19
a, 19b are provided. Opening command button 19
a and 19b are for commanding the opening of the winning ball device 30a or 30b at the player's desired timing and desired position when conditions are reached that allow opening of the winning ball device 30a or 30b.
In addition, in the illustration, two winning ball devices that can be opened for a unit time according to a certain condition are provided, and opening command buttons 19a and 19b for instructing the opening of each winning ball device 30a and 30b are used to open each winning ball device 30a and 30b. Although the case is shown in which it is provided corresponding to a ball device, the number of winning ball devices may be one or three or more.

FIG. 2 is an illustrative view of the back side of the pachinko gaming machine 10. In the figure, a plurality of paths 211 to 219 are provided at appropriate positions on the back side of the game board. The path 211 guides the balls that have entered the safe hole 11a to a safe ball detection switch (hereinafter referred to as a detection switch) 221. The path 212 guides the balls that have entered the safe hole 11b to the detection switch 222. The path 213 guides the ball that has passed through the specific passage area 11c and is guided to the back side to the detection switch 223. Path 214 guides the ball detected by detection switch 221 downward. Route 21
5, the ball detected by the detection switch 223 is routed to path 2.
Lead to 14. Path 216 guides the ball detected by detection switch 222 downward. The path 217 is used for the safe balls that are dropped via the paths 214 and 216, the Yakumono 12a to 12c, the winning ball device 33a,
In order to guide the winning balls won into the winning ball 33c to the winning ball processing device 23, it is provided along the diagonal direction on the back surface of the game board at a position slightly above the out ball entrance 13. The path 218 guides the balls that are detected by the winning ball processor 23 and then dropped to the path 219. The path 219 guides out balls collected through the out ball inlet 13 and winning balls collected through the path 218 to a return device (not shown).

Each of the detection switches 221, 222 and 22
3, for example, a receiving part that receives a ball is fixed to the open end of the operating lever of a micro switch, and when the ball rides on the receiving part, it rotates under its own weight, causing the ball to fall downward, and then The ball detection output is derived by occasionally operating the contacts of the microswitch. In addition, each of these detection switches is
In addition to microswitches, a proximity sensor or a photoelectric sensor may also be used.

Next, the configuration of the entered prize processing device 23 will be specifically explained. The winning ball processing device 23 includes a cylindrical member 231. A ball receiving portion 232 is formed on the path 217 side of the cylindrical member 231 . The cylindrical member 231 is the support member 2
It is supported by 33. When a winning ball guided through the path 217 rides on the ball receiver 232, the cylindrical member 231 rotates clockwise due to the ball's own weight. A winning ball detection switch 234 is provided on the lower side of the cylindrical member 231 in the rotational direction. Winning ball detection switch 234
The system detects winning balls by detecting the rotation of the cylindrical member 231, and provides the detection output as a prize ball release command signal to a prize ball release mechanism (not shown).
When the prize ball release mechanism releases a certain number of prize balls,
The return solenoid 235 is energized and sucks the plunger. In response, the cylindrical member 231 and a lever fixed to the plunger of the solenoid 235 engage, and the cylindrical member 231 is pulled up and returned to its original position.

Further, a ball hitting hammer 25 is provided below the back surface of the pachinko game machine. A part of the back side of the pachinko game machine (for example, the upper part of the back side of the game board) has a ball output rate adjustment for adjusting the unit time determined as one opening time of the winning ball devices 30a, 30c by a minute amount of time. A knob 26 is provided. By the way, the front frame is provided with a key, and only an attendant at the game parlor who has the key can open the front frame. Therefore, the ball payout rate adjustment knob 26 can only be adjusted by the staff member, and cannot be operated by the player.

FIGS. 3A and 3B show a winning ball device 30 that is opened only for a certain unit time according to the conditions under which it can be opened.
3A and 30b, in particular, FIG. 3A shows a perspective view thereof, and FIG. 3B shows a longitudinal sectional view thereof.
Next, the configuration of the winning ball device 30a or 30b used in this embodiment will be explained. Winning ball device 30a
is constructed by rotatably supporting a plate 32 that can be opened toward the front of the game board on a frame member 31 fixed to the game board. A ball receiving part 33 in which a ball can be won is formed in the upper part of the frame member 31. plate 32
A lever 34 is fixed to the back surface of the. and,
The winning ball device opens the plate 32 forward by pulling the lever 34 upward, and the lever 3
4 is configured to close the plate 32 by pressing down.

An opening drive mechanism is provided to open the winning ball device 30a or 30b for a unit time. The opening drive mechanism includes a lever 35 whose one end engages with the lever 34, the other end of the lever 35 is supported by a fulcrum 36, and a portion of the one end of the lever 35 is biased in response to an opening command signal. The plunger 39 of the solenoid 38 is connected to the plunger 39 by a lever 37. In addition, in FIG. 4, which will be described later, the solenoid 38 corresponds to the winning ball device 30a, and the solenoid 38 corresponds to the winning ball device 30a, and the solenoid 38 corresponds to the winning ball device 30b, respectively, to 38b.

In operation, when the solenoid 38 is energized, it attracts the plunger 39 and causes the lever 35 to pivot upwardly via the lever 37. At this time, by pulling the lever 35 upward,
Lever 34, which is continuous with one end of lever 35, is pulled up, opening plate 32 forward. At this time, the balls falling along the game board enter the prize through the opened plate 32, so the plate 3
2. Opportunities to win prize balls vary depending on the opening time. Therefore, in this embodiment, the ball output rate is automatically adjusted by adjusting the opening time of the plate 32 of the winning ball device 30a or 30b.

Therefore, the plate 32 is the winning ball device 30.
a or 30b is opened for a certain unit time under conditions that allow opening, or the winning ball device is opened under conditions that allow opening and opening command button 19a,
When 19b is pressed, it is opened for a certain unit time. In this case, the unit time is variably set by a minute amount of time only by the game hall attendant opening the front frame and operating the ball payout rate adjustment knob 26. Therefore, the winning ball device 30a or 3 that is opened when the conditions that allow the winning ball device to be opened are reached.
The opening time of 0b can be varied by adjusting the ball output rate adjustment knob 26 to shorten it by a minute amount of time within a certain unit time, or extend or shorten a certain unit time by a minute amount of time. It is variably set to In this way, the plate 32 opens for a variably set unit time, making it easier to win a prize, and the winning rate changes in proportion to the opening time of the plate 32, so it is clear that the ball output rate can be easily adjusted. Dew.

FIG. 4 is a game control circuit diagram of an embodiment of the present invention. The game control circuit of this embodiment includes an opening condition determining means 40, an opening control circuit 50a for opening the winning ball device 30a, and an opening control circuit 50b for controlling the opening of the winning ball device 30b.
The opening condition determining means 40 determines that the conditions have become such that the winning ball device can be opened.

A variable resistor 53, which is an example of unit time variable adjustment means, is connected to each of the opening control circuits 50a and 50b. The variable resistor 53 changes its resistance value by operating the ball output rate adjustment knob 26,
This allows the time constant to be varied. More specifically, the opening control circuit 50a includes a monostable multivibrator (hereinafter referred to as monostable multi) 51, which is an example of a multivibrator. A time constant circuit consisting of a capacitor 52 and a variable resistor 53 is connected to the monostable multi 51 in relation to it. This variable resistor 53 functions as a unit time variable adjustment means, and its resistance value is changed by operating the ball output rate adjustment knob 26. monostable multi 5
The base input terminal of a transistor 54, which is an example of switching means, is connected to the set output terminal Q of 31. A solenoid 38a (38b if the opening control circuit is 50b) is connected between the collector of this transistor 54 and the power supply +V.

Note that it is a matter of course for those skilled in the art to replace the monostable multivibrator with a bistable multivibrator (flip-flop). On the other hand, the opening control circuit 50b has a circuit configuration similar to that of 50a.

In addition, the variable resistors 53 corresponding to each of the opening control circuits 50a and 50b change the resistance value in conjunction with the operation of one ball output rate adjustment knob 26 to vary the time constant. . However, as another embodiment, a ball output rate adjustment knob may be provided corresponding to each winning ball device for the purpose of individually adjusting the unit time for each of the winning ball devices 30a, 30b.

Next, with reference to FIGS. 1 to 4, the detailed circuit configuration shown in FIG. 4 and the operation when playing a game with the pachinko game machine of this embodiment will be explained.

The player takes the ball borrowed from the ball rental machine to the ball waiting gutter 15.
and operate the ball hitting handle 16 to hit the balls one by one onto the game board. At this time, the balls are driven into the safe holes 11a, 11b or the balls 12a to 12.
Either the out balls win a prize with a certain probability, or they pass through the specific passage area 11c, or they are collected at the out ball entrance 13 without winning a prize. Now, assuming that the hit ball lands in one of the Yakumono 12a to 12c, the ball receiving piece of the Yakumono with the winning ball is opened in the same way as in conventional pachinko gaming machines, and the hit ball is placed in the prize. Make it easier. At the same time, the winning balls pass through the path 217 to the winning ball processing device 2.
3 is detected by the winning ball detection switch 234. Therefore, a fixed number of prize balls are released from the prize ball release device to the prize ball release port 17. Then, when the second ball enters the Yakumono where the ball was opened,
When the ball receiving piece is closed, a certain number of prize balls are released for each winning ball.

On the other hand, when the ball hits the safe hole 11b,
Detection switch 222 is opened. Therefore, a high level signal (hereinafter referred to as high level) is given to the encoder 41 via the detection switch 222. Accordingly, the encoder 41 encodes the number of points (for example, 2 points) given according to the winning ball in the safe hole 11b, and provides it to the addition/subtraction counter 42 as addition information. The addition/subtraction counter 42 uses the count value up to that point (0 point in the initial state) and the encoder 41
, and the added value is given to the decoder 43 and also to the comparison circuit 44 . The decoder 43 causes the count value of the addition/subtraction counter 42 to be displayed on the score display 14. The comparison circuit 44 is supplied with the output of the encoder 45. The encoder 45 is the opening command button 19a or 19
Based on the high-level input derived when b is pressed, the value of the product of the number of opening commands for winning ball devices 30a and/or 30b and the number of points required to open one winning ball device. is encoded and given to the comparator circuit 44 and gate circuit 46. For example, one winning ball device 30a or three
In the case where the number of points required to open 0b is defined as 5 points, the encoder 45 derives a coded signal with a numerical value of 5 in response to pressing either the opening command button 19a or 19b. , a coded signal with a numerical value of 10 is derived in response to both opening command buttons 19a and 19b being pressed.

If the player does not issue an opening command for any of the winning ball devices 30a or 30b now, but wishes to issue an opening command later, neither of the opening command buttons 19a, 19b will be pressed. In this case, encoder 4
5 does not derive a coded signal. At this time, the comparison circuit 44 compares the count value of the addition/subtraction counter 42 with the output of the encoder 45, and
Even if it is determined that the count value is larger and a high level signal indicating that opening of the winning ball device is permitted, the opening command buttons 19a, 19
Since b is not pressed, AND gate 46
a, 46b are not activated. Therefore,
AND gates 46a and 46b do not provide an opening command signal to the corresponding opening control circuit 50a or 50b. Note that, as in the case described above, a certain number of prize balls are released depending on the balls that enter the safe hole 11b.

Similarly, when a ball hits the safe hole 11a, a high level is given to the encoder 41 via the detection switch 221. Accordingly, the encoder 41 encodes the number of points (for example, 3 points) given according to the winning balls in the safe hole 11a and provides it to the addition/subtraction counter 42. Addition/subtraction counter 42
adds the points currently awarded to the previous count. Further, when the driven ball passes through the specific passage area 11c, the detection switch 223 is closed.
Therefore, a high level is applied to the encoder 41 via the detection switch 223. In response, the encoder 41 encodes a score (for example, 5 points) given according to the passing ball in the specific passing area 11c and supplies it to the addition/subtraction counter 45 to be added to the count value up to that point. In this way, the addition/subtraction counter 42 cumulatively counts the points given to each ball each time it enters the safe holes 11a, 11b or passes through the specific passage area 11c.

Next, when the number of points displayed on the score display 14 is greater than or equal to the number that can open one winning ball device 30a or 30b, the operation will be explained when the player issues a command to open one winning ball device 30a or 30b. .
In this case, the player presses the opening command button 19a. Accordingly, the high level opens command button 19
It is applied as one input to the AND gate 46a through the input signal a, and is also applied to the encoder 45. The encoder 45 provides the comparator circuit 44 and the gate circuit 46 with a coded signal having the number of points (5 points) required to open one winning ball device based on one high-level input. The comparator circuit 44 determines that the count value of the addition/subtraction counter 42 is larger than the output value of the encoder 45, and outputs a high level indicating that opening is possible to the AND gates 46a and 4.
Give to 6b. At this time, the AND gate 46b remains inactivated because the opening command button 19b is not pressed. At this time, the AND gate 46a derives a high-level opening command signal based on the fact that the opening command button 19a is pressed and there is an output from the comparison circuit 44.
1 trigger input terminal T. monostable multi 5
1 derives a high level from its set output terminal Q in response to the rise of the open command signal, thereby making the transistor 54 conductive. According to the conduction of the transistor 54, power is supplied to the solenoid 38a, and the solenoid 38a is energized. Accordingly, the plate 32 of the winning ball device 30a is opened forward to facilitate winning. After the monostable multi 51 derives a high level from the set output terminal, the set output is delayed by a certain time (i.e., unit time) determined by a time constant based on the capacitance of the capacitor 52 and the resistance value of the variable resistor 53. A low level signal is derived from the output terminal. That is, after the opening command signal is input, the monostable multi 51 derives a high level for a certain period of time based on the time constant of the time constant circuit, makes the transistor 54 conductive during that period, and therefore turns the winning ball device 30a on. Cultivate. At the same time, the output of the AND gate 46a is transmitted to the gate circuit 4.
6 is opened. Accordingly, the output of the encoder 45 is given as subtraction information to the addition/subtraction counter 42, and the number of points (5 points) required to open one winning ball device is subtracted from the count value of the addition/subtraction counter 42.

Incidentally, the time period during which the monostable multi-channel circuit 51 derives a high level from the set output terminal can be adjusted by changing the resistance value of the variable resistor 53. In other words, the operation of the ball output rate adjustment knob 26 is as follows.
Since the variable resistor 53 is not operated at least while the player is playing a pachinko game, once the resistance value of the variable resistor 53 is determined, it remains constant unless readjusted by an attendant. Therefore, if t1 is the unit time based on the time constant determined by the time when the resistance value of the variable resistor 53 is minimized and the capacitance of the capacitor 52, then when the resistance value of the variable resistor 53 is maximized, Minute time t obtained by subtracting unit time t1 from the time constant
The opening time of the winning ball device 30a can be adjusted by 2.

In addition, if necessary, the set output of the monostable multi 51 is connected to the AND gate 46a via an inverter.
given as input. Thereby, during the opening of the winning ball device, it is possible to prohibit the opening command button 19a from operating in response to repeated pressing, and it is possible to prevent the player from being disadvantaged.

On the other hand, if you want to open the winning ball device 30b,
When the player presses the opening command button 19b, the same operation as described above is performed. Additionally, if the number of points displayed on the score display 14 is greater than the number of points required to open two winning ball devices,
Opening command buttons 19a and 19b can be pressed simultaneously, or either opening command button 19a or 19b can be pressed repeatedly.

Next, the operation when adjusting the ball payout rate, which is a feature of this invention, will be explained. By the way, after the game hall is closed, the daily ball payout rate of each pachinko game machine is checked, and the ball payout rate may be changed for each pachinko game machine or the ball payout rate may be changed for each pachinko game machine. In this case, conventionally, a nailer would adjust the spacing and inclination of the nails of each pachinko game machine one by one.
On the other hand, in this embodiment, the ball payout rate can be easily adjusted by the following operation. That is, the staff member opens the front frame, adjusts the ball output rate adjustment knob 26 provided on the back of the pachinko machine, and adjusts the variable resistor 5.
Change the resistance value of step 3. As a result, the time constant of the monostable multiplier changes in proportion to the resistance value of the variable resistor 53. For this reason, during the next day's opening, the time constant of the monostable multi changes to become longer or shorter than the unit time.
The count-up output time of the counter 55 changes by a minute amount of time. For example, if the unit time t1 for opening the winning ball device 30a or 30b is set to 30 seconds under the condition that the winning ball device can be opened, a change in the time constant, that is, a minute time t2, can be adjusted by adjusting the resistance value of the variable resistor 53. If it is ±5 seconds, then
The opening time of the winning ball device 30a or 30b can be adjusted within the range of 25 seconds to 35 seconds. For this reason,
By adjusting the opening time of the winning ball device by a minute amount of time, the winning probability of the winning ball device can be changed, and the ball output rate can also be changed in proportion to the change in the winning probability.

As described above, according to this embodiment, by changing the time constant of the monostable multi under conditions where the winning ball device can be opened, the opening time of the winning ball device can be easily reduced by a minute amount of time relative to the unit time. It has the advantage that it can be changed and the ball payout rate can be adjusted extremely easily. In addition, when adjusting the ball output rate, you only need to operate the ball output rate adjustment knob and adjust the minute time scale, so there is no need to adjust the nails, and you do not need to be an expert like a nailer. Another advantage is that the ball payout rate can be adjusted easily and quickly. Additionally, adjusting the ball delivery rate has the advantage of reducing errors compared to the conventional adjustment of nails. Further, according to this embodiment, it is possible to issue an opening command at a timing desired by the player under conditions that allow opening of the winning ball device.

In addition, in the above-mentioned embodiment, the opening command button 19
A and 19b have been described, and when the conditions for opening are met, the winning ball device is commanded to open at a timing desired by the player. However, various other modifications are conceivable. For example, without providing an opening command button and AND gates 46a, 46b, the output of the comparator circuit 46 can be
By directly supplying this as a trigger input, it is possible to issue a command to open the winning ball device as soon as the winning ball device reaches a point at which it can be opened.

In addition, in the embodiment shown in FIG. 4, as the opening condition determining means, the points awarded according to the winning balls are accumulated, and when the points reach a certain value, the opening of the winning ball device is permitted. Although described above, it goes without saying that the technical idea of the present invention can also be applied to pachinko gaming machines using various other gaming methods. For example, in the case of a game method in which a winning ball device is opened when a passing ball hits a certain passing area or a winning hole, opening of a winning ball device is allowed to occur in a specific area (for example, 11c). The opening control circuits 50a and 50b may be configured to operate when a passing ball is detected. This has the advantage that the configuration of the opening condition determining means can be extremely simplified and inexpensive.

Furthermore, in the above embodiment, the ball output rate adjustment knob is provided on the back of each pachinko machine, but the ball output rate adjustment knob is provided at a location away from the pachinko machine and can be remotely controlled. The ball payout rate may be adjusted. In that case, the operation units for the ball payout rate adjustment knobs of the plurality of pachinko gaming machines are collectively installed in the room where the manager of the gaming hall is present. In this way, there is an advantage that the ball payout rate can be adjusted even during the game without opening the front frame of each pachinko game machine.

As described above, according to the present invention, it is possible to adjust the ball payout rate without adjusting the angle or interval of the nails formed on the game board, and it is possible to easily adjust the ball payout rate without adjusting the angle or interval of the nails formed on the game board. Furthermore, unique effects such as being able to adjust the ball payout rate in a short period of time are achieved.

That is, without adjusting the nails, in the case of a pachinko game machine in which it is difficult to win a pachinko ball with many nails, the opening time of the opening/closing plate of the winning ball device is adjusted to be longer. In this way, even if the number of winnings of pachinko balls itself is small, the number of balls that can be won when the opening/closing board is opened can be increased, and the ball payout rate can be increased as a whole.

On the other hand, in the case of a pachinko game machine where the pachinko balls are easily won, the opening time of the opening/closing board is adjusted to be shorter. In this way, even if the number of winnings of pachinko balls is large, the number of balls that can be won each time can be reduced, and the ball payout rate can be lowered as a whole.

Therefore, it is possible to provide a pachinko game machine with improved operability, in which the ball payout rate can be subtly, easily, and appropriately adjusted for each pachinko game machine.

[Brief explanation of the drawing]

FIG. 1 is a front view of a pachinko game machine according to an embodiment of the present invention. FIG. 2 is an illustrative view of the back side of the pachinko game machine. Figures 3A and 3B are illustrative views of the winning ball device used in this embodiment.
FIG. 4 is a game control circuit diagram of an embodiment of the present invention. In the figure, 10 is a pachinko game machine, 11a,
11b is a safe hole, 11c is a specific passage area, 12
a to 12c are Yakumono, 19a and 19b are opening command switches, 30a and 30b are winning ball devices that can be opened for a unit time, 40 is an opening condition determining means, 41,
45 is an encoder, 42 is an addition/subtraction counter, 43
44 is a comparison circuit, 46 is a gate circuit, and 50a and 50b are open control circuits.

Claims (1)

[Scope of Claims] 1. A winning ball device that is disposed on the surface of the game board and includes an openable/closable plate that can be opened to make it easier for balls to win, and a winning ball device that is disposed on the back surface of the game board and that is electrically energized. an opening drive mechanism that opens and closes the opening and closing plate of the winning ball device according to the switching means; a switching means provided so that the opening and closing drive mechanism is electrically energized depending on the conduction state thereof; Opening condition determining means for determining that conditions have reached such a condition that the winning ball device can be opened; a pulse is derived for a certain unit time from the time when the output of the opening condition determining means is received, and the switching means is made conductive by the pulse output. A multivibrator for controlling opening and closing of the opening/closing plate of the winning ball device for a certain unit time, and a pulse output of the multivibrator connected to the multivibrator and changing a time constant by adjusting the multivibrator. A unit time variable adjusting means for changing the time by a minute amount of time is provided, and the opening time of the opening/closing plate of the winning ball device is changed by operating the unit time variable adjusting means to change the unit time by a minute amount of time. , a pachinko game machine characterized in that the payout rate of the pachinko game machine is adjusted. 2. The unit time variable adjustment means includes an operation section for adjusting the specific number by its operation,
The pachinko game machine according to claim 1, wherein the operation section is arranged on the back side of the pachinko game machine. 3. The unit time variable adjustment means includes an operation section that adjusts the time constant through its operation, and the operation section is provided at a location away from the pachinko game machine.
A pachinko game machine according to claim 1.