JPH09140887A - Pachinko game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow the game balls flowing into a branch section to quickly flow out to a lower tray passage without expanding the width of the lower tray passage in a pachinko game machine. SOLUTION: When an upper tray passage 46 is not blocked, the game balls B flowing into a branch section 44 are prevented from proceeding to a lower tray passage 48 by a threshold plate 50 and proceed to the upper tray passage 46. When the upper tray passage 46 is blocked, the game balls B flowing into the branch section 44 pass over the game balls B(b) accumulated in the branch section 44, ride over the threshold plate 50, and proceed to the lower tray passage 48. Part of the game balls B proceed to the lower tray passage 48 through a bulge section 52, and the game balls B flowing into the branch section 44 can quickly flow out to the lower tray passage 48. The stretch section 52 is protruded on the back face side of a pachinko machine, and the thickness of a mechanism board 29 itself is not increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ball game machine, and more particularly to a structure of a prize ball passage.

[0002]

2. Description of the Related Art Conventionally, a prize ball tank for storing game balls for prize balls and a game ball supplied from the prize ball tank which is operated due to winning of a prize due to the behavior of the game ball The prize ball discharging device, the branch part into which the discharged game balls flow, the upper plate passage and the lower plate passage connected to the branch part, the game balls are preferentially advanced from the branch part to the upper plate passage, and the upper plate passage is A guide mechanism for advancing the game ball to the lower plate passage when it is blocked by the game ball is provided on the back side, and an upper plate connected to the upper plate passage and a lower plate connected to the lower plate passage are provided. There is a ball game machine provided on the front side, and a pachinko machine and an arrangement ball type pachinko machine are exemplified.

The game balls are guided from the branch portion to the lower plate passage when the game balls are excessively accumulated in the upper plate and the upper plate passage is filled with the game balls. The game balls discharged from the ball discharging device are very large, and in most cases, for example, a special game in which the special winning opening is opened is being played. Therefore, the prize ball ejecting device operates continuously, and the game balls flow into the branch portion one after another.

That is, since the number of game balls flowing in per unit time increases, it is necessary to promptly flow the game balls from the branch portion to the lower plate passage. For that purpose, the width of the lower plate passage may be increased.

[0005]

However, since the lower tray passage is usually provided as a part of the mechanism board,
Its width is limited by the thickness of the mechanism board. Therefore, in the conventional ball game machine, it is necessary to increase the thickness of the mechanism board in order to widen the width of the lower dish passage.

According to the present invention, even if the width of the lower tray passage is not widened,
That is, the purpose is to promptly let the game balls that have flowed into the branch flow out into the lower dish passage without increasing the thickness of the mechanism board.

[0007]

[Means for Solving the Problems] As a means for solving the above problems, the ball game machine according to claim 1 is a prize ball tank for storing game balls for prize balls, and a prize is awarded according to the behavior of the game balls. And the like, which is operated due to the establishment of the prize balls, which discharges the game balls supplied from the prize ball tank, a branch portion into which the discharged game balls flow, and a branch portion which is connected to the branch portion. The upper plate passage and the lower plate passage, and the game ball is preferentially advanced from the branch portion to the upper plate passage, and when the upper plate passage is closed by the game ball, the game ball is advanced to the lower plate passage. And a guide mechanism for the back side, the upper plate connected to the upper plate passage and the lower plate connected to the lower plate passage on the front side, in the ball game machine, Protruding part on the back side is provided with an overhanging part for passing the game ball that advances from the branch part to the lower plate passage. Characterized in that was.

The ball-ball game machine according to claim 2 is the ball-ball game machine according to claim 1, wherein as the guiding mechanism, a threshold plate for preventing passage of the game ball from the branch portion to the lower dish passage. And an overflow port formed above the threshold plate to allow the passage of game balls, and the projecting portion is provided from the lower plate passage side of the overflow port to the branch portion. And

A ball game machine according to a third aspect is the ball game machine according to the second aspect, in which between the projecting portion and the branching portion, there is a large amount on the side of the threshold plate on the side of the prize ball discharging device. It is characterized in that a small step is formed by.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION In the ball game machine according to claim 1 having the above structure, the prize ball tank and the prize ball discharging device are operated due to winning of a prize or the like due to the behavior of the game ball. Then, the game balls supplied from the prize ball tank that stores the game balls for prize balls are discharged. The discharged game ball flows into the branch portion. The guide mechanism preferentially advances the game ball from the branch portion to the upper plate passage, and when the upper plate passage is blocked by the game ball, advances the game ball to the lower plate passage. The game balls that have advanced to the upper plate passage are carried to and stored in the upper plate, and the game balls that have advanced to the lower plate passage are carried and stored in the lower plate.

The game ball that advances to the lower plate passage because the upper plate passage is blocked by the game ball can pass through the overhang portion. In other words, the passage of the game ball that advances from the branch portion to the lower plate passage expands by the amount of the overhanging portion, so that the game ball that flows into the branch portion quickly flows out to the lower plate passage without widening the width of the lower plate passage. Can be made. Also, the overhanging part is
Since it protrudes to the back side of the ball game machine, the thickness of the mechanism board itself does not increase.

In the ball game machine according to the second aspect, the threshold plate prevents passage of the game ball from the branch portion to the lower plate passage.
However, when the game balls are accumulated in the branch portion, the newly introduced game balls pass over the existing game balls to get over the threshold plate and reach the lower plate passage through the overflow port. There is also a game ball that passes through the overhanging portion and reaches the lower plate passage. The structure of the threshold plate is extremely simple and does not complicate the structure of the branch portion.

In the ball-playing machine according to the third aspect of the present invention, between the projecting portion and the branch portion, a step is formed on the side of the threshold plate that is large and on the side of the prize ball discharging device that is small. When the ball is in a state where the game balls are accumulated and the newly introduced game balls pass over the accumulated game balls, the game balls can proceed from the branch portion side to the projecting portion side.

Therefore, in the state where the upper bowl passage is not closed, the game ball does not pass through the projecting portion and advances to the lower bowl passage, and the course of the game ball can be surely distributed.

[0015]

Next, one embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic front view of a pachinko machine 10 as a ball game machine. As shown in FIG. 1, a liquid crystal display panel 14 is attached to the center of the game board 12 installed in the pachinko machine 10. A start winning port 18 is provided below the liquid crystal display panel 14, and a large winning port 20 and an out hole 21 called an attacker are provided below the starting winning port 18. In addition, the game board 12 is provided with a windmill, a well-known ordinary winning port, and the like (not shown). Also, game board 1
The front side of 2 is covered with a glass plate 22, and a game area 16 is formed between the game board 12 and the glass plate 22.

On the front side of the pachinko machine 10, the game board 12
An upper plate 24 is provided below the lower plate, and a lower plate 26 is provided below the upper plate 24. The upper plate 24 and the lower plate 26 can store game balls and serve as a tray for the game balls discharged by the pachinko machine 10 as prize balls. Further, the upper plate 24 communicates with a launching device (not shown), and the game balls supplied from the upper plate 24 can be launched toward the game area 16. A launch handle 28 for operating the launch device is installed in the lower front corner of the pachinko machine 10, and the player can adjust the strength of the launch force by rotating the launch handle 28.

As shown in FIG. 2, on the back side of the pachinko machine 10, a game board 12 is held and a mechanism board 29 on which various parts are assembled is mounted. Also,
On the back surface of the game board 12, a symbol control device 31 for controlling the liquid crystal display panel 14, a main control device 33 for controlling the entire pachinko machine 10, a starting winning opening 18, a winning opening 20 and the like. A safe ball gutter (not shown) for collecting balls is installed.

At the uppermost part of the mechanism board 29, a prize ball tank 30 for storing game balls supplied for game balls from a game ball supply facility (not shown) in the game hall is arranged. An outlet (not shown) for letting out the game balls is provided at the bottom of the prize ball tank 30, and a tank rail 32 for connecting the game balls flowing out from the outlet while aligning the game balls is connected to the outlet. Has been done.

An L-shaped gutter 34 is connected to the downstream end of the tank rail 32, and the path of the game ball can be changed substantially vertically here. A trough-shaped gutter 36 is connected to a lower end of the gutter 34, and a lower end of the gutter 36 is connected to a prize ball discharging device 38. The gutter 36 plays a role of reducing the load of the game ball applied to the prize ball discharging device 38.

An outlet gutter 42 is connected to the outlet 40 of the prize ball discharging device 38, and a lower end of the outlet gutter 42 is connected to a branch portion 44. As shown in FIG. 2, FIG. 3 and FIG. 4, the branching portion 44 is a top plate passage 46 communicating with the top plate 24 shown in FIG.
And a branch portion between the upper tray passage 46 and the lower tray passage 48 communicating with the lower tray 26 shown in FIG. 1. FIG.
As shown in FIG. 5, the upper plate passage 46 is connected to the upper plate 24 by the upper plate discharge port 47, and the lower plate passage 48 is connected to the lower plate 26 by the lower plate discharge port 49.

The upper plate passage 46 and the lower plate passage 48 are separated by a threshold plate 50. As shown in FIG. 4, the threshold plate 50 rises almost vertically to the upper plate passage 46, and the height thereof exceeds the radius of the game ball B. Further, above the threshold plate 50, a space K sufficient for the game ball B to pass through is secured. Therefore, the outflow gutter 4
The game ball B flowing into the branch portion 44 from 2 is normally guided by the threshold plate 50 to the upper plate passage 46 while being prevented from proceeding toward the lower plate passage 48.

As shown in FIGS. 2, 3 and 4, the branch portion 44 has a threshold plate 50 extending from the connection portion with the outflow gutter 42.
An overhanging portion 52 is provided so as to reach the lower plate passage 48 beyond the above. As shown in FIG. 3 and FIG.
2 projects toward the back side of the pachinko machine 10 with respect to the mechanism board 29. Further, as shown in FIGS. 2 and 4, the bottom surface 54 of the projecting portion 52 is inclined from the outflow gutter 42 side to the lower tray passage 48 side.

As shown in FIG. 4, a step 56 is provided between the bottom surface 54 and the branching portion 44 (upper plate passage 46) so that the game ball B does not get over it. For this reason,
The game ball B that has flowed into the branch portion 44 from the outflow gutter 42 does not normally enter the overhang portion 52.

However, when a large amount of game balls are accumulated in the upper plate 24 and even the upper plate passage 46 is filled with the game balls B as shown in FIG. 3, the game balls B flow into the branch portion 44 from the outflow trough 42. Since the game ball B (v) passes over the game ball B (b) filling the upper plate passage 46, a part of the game ball B goes over the step 56 and enters the overhanging portion 52 (FIG. 3, FIG. Figure 4
Game ball B (w)), and reaches the lower plate passage 48 through the overhanging portion 52 (see game ball B (x) in FIGS. 3 and 4). In addition, at this time, the game ball B filling the upper plate passage 46
There is also a game ball B (x) that passes above (b) and goes through the space K to the lower plate passage 48.

As described above, the branching portion 44 has the upper plate passage 46.
Until the game ball B is filled with the game ball B and is in the closed state, the game ball B flowing from the outflow gutter 42 is guided exclusively to the upper plate passage 46, and when the upper plate passage 46 is in the closed state, the game ball B
To the lower plate passage 48.

The upper ball passage 46 is filled with the game balls B, because the game balls B discharged from the prize ball discharging device 38 are very large. For example, a special game in which the special winning opening 20 is opened. It is almost always done. Therefore, the prize ball discharging device 38 operates in quick succession, and the branch portion 4
Game balls flow into 4 one after another.

In other words, since the number of game balls per unit time increases, it is necessary to promptly flow the game balls from the branch portion 44 to the upper plate passage 46 or the lower plate passage 48. For that purpose, the widths of the upper tray passage 46 and the lower tray passage 48 may be widened. However, since the width of the lower tray passage 48 is restricted by the thickness of the mechanism board 29, it is necessary to increase the thickness of the mechanism tray in order to increase the width of the lower tray passage 48 in the conventional mechanism board.

However, in the mechanism board 29 of this specific example,
Since the branch portion 44 is provided with the projecting portion 52,
As shown in FIG. 3, when the upper plate passage 46 is in the closed state with the game ball B, the passage width of the game ball B in the branch portion 44 is the same as that of the game ball B that closes the upper plate passage 46. The projection 52 is added to the upper side. Therefore, even if the width of the lower plate passage 48 itself is not widened, the game ball B that has flowed into the branch portion 44 can be quickly discharged to the lower plate passage 48. Moreover, as for the mechanism board 29, only the thickness of the overhang portion 52 increases, and it is not necessary to increase the overall thickness.

As shown in FIG. 2, the mechanism board 29 is provided with a safe ball collecting section 58 for collecting game balls from the safe ball gutter, and the game balls collected in the safe ball collecting section 58 are It is a structure that is discharged to the accommodation portion 60 side provided below the safe ball collecting portion 58.

The accommodating part 60 is a box-shaped cavity and is a mechanism board 29.
The maintenance cover 6 provided on the
2 can be opened and closed. As shown in FIG. 6, a full switch 64 is installed inside the housing portion 60. The rocking piece 66 of the full switch 64 is a metal elastic body and has a base 68.
Can be pivotally displaced about the fulcrum, and the switch protrusion 70 is reciprocally displaced according to the pivotal displacement. When the switch protrusion 70 is in the protruding position as shown, the signal level of the full switch 64 is high and the switch protrusion 7
When 0 is pushed into the main body of the full switch 64,
The signal level of the full switch 64 becomes low level.

A pushing member 74 is attached to the wall 48a of the lower tray passage 48 so as to be swingably supported by a shaft 72 fixed to the wall 48a. A coil spring 78 in a compressed state is interposed between the long side 76 of the inverted L-shaped pushing member 74 and the wall 48a.
4 is urged in a direction away from the wall 48a. The short side 77 of the pushing member 74 penetrates the hole 48b provided in the wall 48a, and brings the head 79 into contact with the swing piece 66.
Therefore, when the pushing member 74 is displaced toward the wall 48a side against the biasing force of the coil spring 78, the swinging piece 66 is displaced by the head portion 79 toward the main body of the full switch 64, and the full switch is opened. 64 signal levels can be switched.

The accommodating portion 60 also includes a safe ball collecting portion 58.
A safe ball introducing trough 104 and a safe ball discharging device 106, which are in communication with each other, are installed. The ball passage 108 of the safe ball discharging device 106 has a shape in which a cylindrical portion of an upper end portion 108a which is an inlet on the safe ball introducing trough 104 side and a lower end portion 108b which is an outlet side is connected by a side wall portion 108c. Side wall 1
A pair of openings 110, 11 facing each other are provided in the center of 08c.
2 is provided and a safe ball switch 114 is installed over these openings 110, 112. The safe ball switch 114 normally outputs a high level signal, but when the game ball B exists inside, as shown in the figure,
Change the signal level to low level.

In the ball passage 108, the upper end 108a
A pair of plate portions 116a and 116b pivotally supported by
A swinging member 120 including a ball receiving portion 118 provided at the tips of 16a and 116b is installed. The swing member 120 is driven by a solenoid 124 connected via a wedge member 122 and is swingable in the ball passage 108. A spring 126 for returning the solenoid 124 is mounted on the wedge member 122.

With such a structure, the safe ball introduction gutter 10
The game ball B guided from 4 to the safe ball discharging device 106 is
It falls in the ball passage 108 and is temporarily stopped at the ball receiving portion 118. Here, the safe ball switch 114 detects the game ball B and changes the signal level to a low level.

The output signal of the safe sphere switch 114 is input to the main controller 33 and used for counting the number of safe spheres. In addition, this total is transmitted from the main control unit 33 to the hall computer (not shown) as a part of the operation data of the pachinko machine 10. This safe ball switch 114
The output signal of is input to the main control unit 33 and used for counting the safe sphere count and the like. Also, this tally is for pachinko machines 1
As a part of the operation data of 0, it is transmitted from the main control unit 33 to the hall computer (not shown).

Further, since the full switch 64 and the safe ball discharging device 106 are accommodated in the common accommodating portion 60, the accommodating space can be effectively utilized and the maintainability is excellent. Next, the swing member 1 is operated by the operation of the solenoid 124.
When 20 is swung in the direction of arrow B, the game ball B passes through the gap formed between the ball receiving portion 118 and the ball passage 108 and falls. When the game ball B falls, the signal level of the safe ball switch 114 returns to the high level. At this time, if there is a next game ball B, this game ball B is prevented from falling by the wedge member 122.

When the wedge member 122 is further retracted due to the return of the solenoid 124, the following game ball B is dropped and stopped on the ball receiving portion 118, and the safe ball switch 114 is operated as described above. In this way, the winning game balls are discharged exactly one by one. As shown in FIG. 2, a discharge gutter 128 connected to a game ball collection gutter of a game machine installation island (not shown) is provided below the accommodation portion 60. In this discharge gutter 128, the game ball discharged from the safe ball discharge device 106 and the game ball from the out hole 21 (see FIG. 1) are merged, and the merged game ball is discharged to the game machine installation island. It

As shown in FIG. 2, an error correspondence table 130 and an error indicator 132, which is a 7-segment LED indicator, are installed in the lower corner of the mechanism panel 29. In the error correspondence table 130, as shown in FIG. 7, error codes 0 to 9 and the contents of abnormalities corresponding thereto and countermeasures are described.

Next, the electrical construction of the pachinko machine 10 will be described with reference to FIG. The main controller 33 is configured as a microcomputer including a well-known CPU 80, RAM 82, ROM 84, input interface 86, output interface 88 and the like.

The input interface 86 has a start winning switch 90 for detecting a gaming ball that has won the starting winning opening 18, a 10-count switch 92 for detecting a gaming ball that has won the large winning opening 20, and a large winning opening. V switch 94, full switch 64, and safe ball switch 114 for detecting a game ball passing through a special area (not shown) in 20
Etc. are connected.

The output interface 88 has a special winning opening 2
A solenoid 96 for driving 0 to open, an error indicator 132, a prize ball discharging device 38, a symbol control device 31, a launching device 98, etc. are connected. With such a configuration, the CPU 80 of the main control device 33 obtains signals and data input from the input interface 86 side and uses these signals and data to output the output interface 88 according to the program stored in the ROM 84. A command signal can be sent to each connected unit to control their operations and the like.

Some examples of the processing of the CPU 80 will be described. First, the CPU 80 executes a lottery process and a special game process as controls relating to the progress of the game. In this process, when the CPU 80 knows the winning of the game ball into the starting winning opening 18 based on the signal from the starting winning switch 90, it wins by a lottery and determines the deviation. An instruction is given to the symbol control device 31 according to the determination result, and if it is a hit, a special symbol indicating the hit is displayed, and if it is a hit, the miss is displayed. Further, the CPU 80 executes a process related to a special game such as operating the solenoid 96 to open the special winning opening 20.

Further, the CPU 80 is, for example, the prize ball tank 3
When 0 is emptied or the lower plate 26 is filled with game balls, it is possible to restrict the operation of the launching device 98 when the prize balls cannot be paid out or it is preferable not to pay out. For example, as described above, when the upper plate 24 and the upper plate passage 46 are filled with game balls and the state where the game balls as prize balls are guided to the lower plate passage 48 continues, eventually the lower plate 26 is also filled with the game balls. , The game balls that cannot flow out to the lower plate 26 stay in the lower plate passage 48. Then, the pressing member 74 is pressed against the wall 48a by the pressure of the game ball. The full switch 64 is pushed by the head 79 of the pushing member 74 pushed against the wall 48a.
The rocking piece 66 is rockingly displaced, and the switch protrusion 70 is pushed into the main body of the full switch 64. As a result, the signal level of the full switch 64 changes, so that the CPU 80
Can know that the lower bowl passage 48 is filled with the game balls.

When the lower bowl passage 48 is filled with the game balls in this way, it is not preferable to operate the prize ball discharging device 38 (discharge the prize balls). So, CPU
80 does not generate the winning that causes the prize balls to be discharged, so that the game balls are launched into the game area 16, that is, the operation of the launching device 98 is stopped.

In addition to the progress of the game, the CPU 80 also regularly executes a monitoring process of whether or not the switches are operating normally. Next, for simplification of the explanation, this processing will be explained by taking the monitoring of the starting winning switch 90, the 10-count switch 92 and the V switch 94 as an example.

The CPU 80 executes the error display processing shown in FIG. 9 every time the preset monitoring execution timing comes. In this error display process, the CPU 80
The state of the start winning switch 90 is determined. In particular,
It is determined whether or not the signal level of the start winning switch 90 is at a low level for a predetermined time or longer (step 210).

Starting prize switch 90 When the game ball is not detected, the signal level is high level, and the structure is switched to low level only when the game ball is detected. Has (1)
It can be assumed that a game ball continuously exists at a position detected by the start winning a prize switch 90 (= ball clogging), (2) failure of the starting prize winning switch 90, and (3) disconnection of the line from the starting prize winning switch 90. In any case, it is an abnormal state in which an accurate signal cannot be obtained from the starting winning switch 90.

10 count switch 92 and V
The switch 94 also operates in the same manner as the start winning switch 90, so that the determination of normality and abnormality is also the same. Therefore, the CPU 80 determines that the abnormality has occurred when the signal level of the starting prize switch 90 has been at the low level for a predetermined time or longer, and sets the abnormality flag F1 to 1 (step 220).

Next, the CPU 80 judges the state of the 10-count switch 92 (step 230), and sets the abnormality flag F2 to 1 if it is abnormal (step 240). Further, the CPU 80 determines the state of the V switch 94 (step 250), and sets the abnormality flag F3 to 1 if it is abnormal (step 260).

Thereafter, the CPU 80 determines whether or not the special winning opening 20 is closed (step 270), and if it is closed (step 270: YES), the big winning opening 20 is opened immediately before that. It is determined whether or not there is a prize for 20 (step 280). If there is no winning (step 280: NO), the abnormality flag F4 is set to 1 (step 290).

If the special winning opening 20 is opened and the game balls are normally fired, it is unlikely that the special winning opening 20 is not won. Therefore, it is highly possible that there was some trouble such as the game ball not being normally fired because the prize was not won. This step 2
The processing of 70 to 290 is executed to confirm the existence of such a trouble.

Next, the CPU 80 determines whether or not there is an error, specifically, whether any of the abnormality flags F1 to F4 is 1 (step 300). Here, the abnormality flags F1 to F
If all 4 are 0, the CPU 80 indicates the error indicator 13
0 is displayed in 2 (step 310), and the error display processing is temporarily terminated.

On the other hand, if any one of the abnormality flags F1 to F4 is 1, the CPU 80 determines that the plurality of abnormality flags F1 to F4.
It is determined whether 4 is 1, that is, whether there are a plurality of abnormal parts (step 320). If there is one abnormal place (step 320: NO), the CPU 80 causes the error indicator 132 to display the numbers corresponding to the abnormal flags F1 to F4,
For example, 1 is fixedly displayed (step 330), and if there are a plurality of abnormal places (for example, F2 and F3 are 1) (step 320: YES), the CPU 80 causes the error display 132.
Then, the number corresponding to the younger number of the abnormality flags F1 to F4, for example, 2 is blinked and displayed (step 330).

Next, the CPU 80 waits until the cause of the abnormality is eliminated (step 350). Specifically, when the abnormality flags F1 to F3 are 1 (the start winning switch 9
0, 10 Count switch 92 and V switch 94 signal abnormality), and wait until the signals of these switches become normal. If F4 is 1, the special winning opening 20
Wait for the game ball to be thrown in and detected by the 10 count switch 92. In addition, for example, a store clerk opens the glass plate 22 to insert the game ball into the special winning opening 20.
2 After being exposed, the special winning opening 20 is opened with a fingertip, and a game ball is thrown into it.

If any cause of the abnormality is eliminated (step 350: YES), the CPU 80 resets the corresponding abnormality flags F1 to F4 to 0 (step 360) and returns to step 300. . If it is determined in step 300 that there is an error, the processes in and after step 320 are repeated. If the abnormality flags F1 to F4 are 0, the CPU 80 ends the error processing.

As described above, when there are a plurality of abnormal points, the error code is displayed in a blinking manner on the error indicator 132, so that the clerk of the gaming shop can know that there are abnormal points at a plurality of points. If the error code is fixedly displayed, it can be determined that there is one abnormality. Above, according to the concrete example,
Although the embodiments of the present invention have been described, it goes without saying that the present invention is not limited to such specific examples and can be variously implemented without departing from the scope of the present invention.

[0057]

As described above, according to the ball game machine according to the first aspect, the game balls flowing into the branch portion are swiftly flown out to the lower dish passage without widening the width of the lower dish passage. be able to. Further, since the projecting portion projects to the back side of the ball game machine, the thickness of the mechanism board itself does not increase.

According to the ball game machine of the second aspect, the structure of the branch portion is not complicated. According to the ball game machine according to the third aspect, the routes of the game balls can be reliably distributed.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an outline of a front side of a pachinko machine of a specific example.

FIG. 2 is an explanatory diagram showing an outline of a back side of a pachinko machine of a specific example.

FIG. 3 is a transverse cross-sectional view of a specific example of a pachinko machine near a branch portion.

FIG. 4 is a vertical cross-sectional view in the vicinity of a branch portion of a pachinko machine of a specific example.

FIG. 5 is a perspective view of a projecting portion of a pachinko machine of a specific example.

FIG. 6 is an explanatory diagram of the inside of a housing portion of a specific example of a pachinko machine.

FIG. 7 is an explanatory diagram of an error correspondence table of a specific example of a pachinko machine.

FIG. 8 is a block diagram of an electrical configuration of a specific example of a pachinko machine.

FIG. 9 is a flowchart of an error display process executed by the CPU of the specific pachinko machine.

[Explanation of symbols]

10 ... pachinko machine (ball game machine), 12 ... game board, 16 ... game area, 22 ... glass plate, 24 ...
..Upper plate, 26 ... lower plate, 29 ... mechanical panel, 30
..Prize ball tanks, 32 ... Tank rails, 34, 36
... gutter, 38 ... prize ball discharge device, 42 ... outflow gutter, 44 ... branch part, 46 ... upper plate passage, 47 ...
・ Upper plate discharge port, 48 ... Lower plate passage, 49 ... Lower plate discharge port, 50 ... Threshold plate, 52 ... Overhang portion, 5
4 ... bottom surface, 56 ... step, 98 ... launching device,
B: game ball, K: space (overflow port).

Claims (3)

[Claims] 1. A prize ball tank for storing game balls for prize balls, and a prize for discharging game balls supplied from the prize ball tank, which is activated due to a winning or the like being established due to the behavior of the game balls. Sphere discharging device, a branch portion into which the discharged game ball flows, an upper plate passage and a lower plate passage connected to the branch portion, and the game ball is advanced from the branch portion to the upper plate passage with priority. No upper plate and the lower plate connected to the upper plate passage and a guide mechanism for advancing the game ball to the lower plate passage when the upper plate passage is closed by the game ball In a ball game machine provided with a lower plate connected to the passage on the front side, a projecting portion is provided which projects to the back side of the ball game machine and allows a game ball to advance from the branch portion to the lower plate passage. Ball game machine characterized by. 2. The ball game machine according to claim 1, wherein, as the guide mechanism, a threshold plate for preventing passage of the game ball from the branch portion to the lower tray passage, and above the threshold plate. A ball game machine characterized in that an overflow port is formed to allow passage of a game ball, and the projecting portion is provided from the lower plate passage side of the overflow port to the branch portion. 3. The ball game machine according to claim 2, wherein a step is formed between the projecting portion and the branch portion, the step being large on the side of the threshold plate and small on the side of the prize ball discharging device. A ball game machine.