JP2775446B2 - Ball game machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a ball game machine represented by a pachinko game machine, an arrangement ball type pachinko game machine, and the like.
A mechanical plate as an example of a prize ball dispensing mechanism formed mainly of a synthetic resin material provided on the back side of the ball game machine, and a circuit board for controlling an electric device provided in the ball game machine; And related to a ball-and-ball game machine.

[Prior Art] In this type of ball-and-ball game machine, for example, a rotary drum is driven by an electric variable display device or a motor capable of electrically changing a display state. Various variable display devices, such as a mechanical variable display device, which mechanically changes the display state, or an electric device, such as a variable prize ball device, which is electrically driven to make it easy to win a driven ball, is a ball game machine. There was something arranged in. And
A circuit board including an electronic circuit for controlling the electric device is provided on the mechanism board on the back side of the game board.

The electric device is related to a game value given to the player, and if the operation of the electric device is out of order, the player may be dissatisfied with the game. The malfunction of the strategic device is not particularly tolerated.

[Problems to be Solved by the Invention] On the other hand, the mechanism plate provided on the back surface of the game board is generally made by injection-molding a synthetic resin material such as plastic, and receives a prize in a safe hole or the like of a driving ball. In general, there is provided a prize ball payout mechanism for paying out prize balls. For this reason, when paying out prize balls from the prize ball payout mechanism, a large amount of prize balls are discharged at once through a narrow passage, so that static electricity is easily generated due to friction between the balls and the mechanism plate. Static electricity generated in this way does not cause much problem if it is discharged relatively quickly, but it is easy to discharge and accumulate on the mechanism plate formed of synthetic resin material. After that, it may be discharged. At this time, an electrostatic discharge voltage is applied to a circuit board for driving and controlling the above-described electric device, and electronic components such as a transistor or an integrated circuit (hereinafter, referred to as an IC) included in the circuit board are destroyed. There is a drawback that the target gaming device does not operate well and may give a player dissatisfaction.

Therefore, it is conceivable that the circuit board is housed in a housing case for the circuit board, and the outer periphery thereof is covered with the circuit board case. However, assembling the circuit board case, which is necessary when the circuit board is housed in the circuit board case, becomes complicated, and a new inconvenience may occur at the manufacturing stage such that the manufacturing cost is increased.

The present invention is mainly based on the fact that a mechanism plate made of a synthetic resin is provided with both a prize ball payout mechanism causing static electricity and a circuit board which is weak to static electricity, and is charged due to the payout of the prize ball. It is an object of the present invention to provide a ball-and-ball game machine capable of suppressing an adverse effect of a mechanism board on a circuit board due to static electricity.

[Means for Solving the Problems] The present invention according to claim 1 provides a prize ball payout mechanism section mainly formed of a synthetic resin material provided on the back side of a ball game machine, and a ball game machine. A circuit board for controlling the provided electric device, and a conductive circuit board case surrounding the circuit board, wherein the prize ball payout mechanism section stores prize balls to be paid out to a player. A prize ball storage member, an alignment path provided below the prize ball storage member for aligning the prize balls, and a predetermined number of prize balls provided on the lower side of the alignment path below the ball flow. A prize ball payout path for guiding and paying out; the circuit board case is formed by integrating divided bodies including a first divided body and a second divided body; An engagement portion capable of locking a body and the second divided body; A screw fastening part capable of fastening the first divided body and the second divided body with a screw is provided, wherein the engaging part is formed integrally with the divided body.

According to a second aspect of the present invention, in addition to the configuration of the first aspect of the present invention, the first divided body has an opening that is larger than a planar shape of the circuit board. The two divided bodies close the opening.

According to a third aspect of the present invention, in addition to the configuration of the first aspect, the electric device is an electric game device provided at least on a game board of a ball-and-ball game machine, A circuit board controls the electric gaming device.

[Operation] According to the present invention as set forth in claim 1, the prize balls stored in the prize ball storage member are aligned through the alignment path,
Based on the winning mode, a predetermined number of the arranged prize balls are guided and paid out by the prize ball path. Since the circuit board for controlling the electric device is surrounded by the conductive circuit board case, the adverse effect of the static electricity on the circuit board due to the electrification of the prize ball payout mechanism due to the discharge of the prize ball is minimized. be able to. Further, the first divided body and the second divided body can be more firmly locked by the engaging portion formed integrally with the divided body, and by the function of the screw fastening portion, The first divided body and the second divided body can be fixed with screws.

According to the second aspect of the present invention, in addition to the operation of the first aspect, the first divided body having the opening larger than the planar shape of the circuit board and the opening are formed. A circuit board case is formed by integrally lowering the divided bodies including the second divided body to be closed.

According to the third aspect of the present invention, in addition to the operation of the first aspect, the electric device is constituted by at least an electric game device provided on a game board of the ball game machine. And the circuit board is for controlling the electric game machine.

Example Next, an example of the present invention will be described in detail with reference to the drawings. In the present embodiment, a pachinko game machine will be described as an example of a ball game machine. However, the present invention is not limited to this. For example, a so-called arrangement ball type pachinko game machine in which an arrangement ball can be inserted by inserting a pachinko ball. For example, all ball-and-game machines for which prize balls are paid out are included.

FIG. 1 is an overall front view showing a pachinko gaming machine 1 as an example of a ball game machine according to the present invention.

In the lower right corner of the pachinko gaming machine row 1, an operation handle 19 operated by a player to drive a pachinko ball into a gaming area 23 formed on the front of the gaming board 9 is provided. By operating the operation handle 19, the pachinko balls in the hitting ball supply tray 13 are repelled one by one by a hitting ball firing mechanism 79 (see FIG. 2) and pass between the guide rails 21 to play the game. Driven into region 23.

The game board 9 is provided with a variable display device 25 as an example of an electric game device constituting an electric device at a substantially central position thereof, and a variable winning ball device 29 as an example of the electric game device arranged below the variable display device 25. Is established. A winning ball device 35 is provided above the variable display device 25. In the game board 9,
Further, start winning ports 33a, 33b, 33c and normal winning ports 37a, 37b are provided. If a pachinko ball wins in the starting winning prize openings 33a, 33b, 33c, the rotating drum 27a of the variable display device 25,
The rotation drums 27a, 27b, and 27c are stopped by the rotation operation of the rotation drums 27b and 27c and the stop operation of the player before or after the lapse of a predetermined time. The display result of the stopped variable display device 25 is determined by a predetermined combination (for example, 77
7), the open / close plate 31 of the variable winning ball device 29 is opened, so that a large hit state is established in which the pachinko balls are in a state where winning is easy. The opening and closing of the opening / closing plate 31 ends when the condition of the lapse of a predetermined time (for example, 30 seconds) or a predetermined number of pachinko balls (for example, 10) wins, whichever is earlier, is satisfied, and is closed again. Switch to state. It should be noted that a predetermined number of prize balls may be paid out into the hitting ball supply tray 13 when the display result of the variable display device 25 becomes a predetermined specific combination (for example, 777). further,
The variable display device 25 is configured to be constantly rotating,
The pachinko ball may be configured so that its rotation is stopped in accordance with the start winning prize. If the pachinko ball hit into the game area 23 falls without winning any of the winning ports or the winning ball device, it is collected from the out port 38 as an out ball.

In the figure, reference numerals 41a and 41b denote game effect lamps, which are turned on or blinked in accordance with the occurrence of the big hit state, to achieve a game effect. Reference numerals 43a and 43b denote frame lamps provided on the front frame 3, which are lit or blinked in the big hit state, or lit or blinked when an abnormal state occurs. Furthermore, 15 in the figure is a speaker,
A sound effect is generated in accordance with the occurrence of the big hit state or the like. The front frame 3 is provided with a door holding frame 5 made of metal, plastic, or the like. A glass door 7 and a front plate 11 are attached to the door holding frame 5 so as to be freely opened and closed. A surplus ball tray 17 is provided below the hitting ball supply tray 13, and surplus balls that are filled with the pachinko balls in the hitting ball supply tray 13 and cannot be stored any more are discharged into the surplus ball tray 17. It is configured to be able to.

In addition, when a hit ball is won in the starting winning prize holes 33a to 33c, a relatively small number of prize balls (for example, seven) are paid out, and when a hit ball is won in another winning port or a winning ball device. Is configured so that a relatively large number of prize balls (for example, 13) are paid out, but a large number of prize balls (for example, 13) may be paid out even at the time of starting winning. Further, the ball and ball game machine of the present invention may be anything as long as a prize ball is paid out by hitting a ball or the like. A so-called card-type ball game machine that can be used may be used.

FIG. 2 is an overall rear view showing the internal structure of the pachinko gaming machine 1.

A front frame 3 is attached to the machine frame 2 of the pachinko gaming machine 1 so as to be freely opened and closed and detachable. A game board holding frame 45 is provided on the front frame 3.
On the other hand, the game board 9 (see FIG. 1) has the game board attachments 47a, 47.
b, 47c (47c is not shown) is detachably attached. That is, the game board attachments 47a, 47b, and 47c are configured to be rotatable as shown by arrows in the drawing, and the game board 9 is turned by rotating the game board attachments 47a, 47b, and 47c. It is configured to be removable from the holding frame 45. In this way, by configuring only the game board 9 to be replaceable, there is an advantage that the cost of replacing the pachinko gaming machine 1 at the game hall can be reduced.

The mechanism plate main body 51 constituting the mechanism plate 49 is formed of a synthetic resin material containing metal in part, and is detachably attached to the game board holding frame 45 by mechanism plate attachments 77a, 77b, 77c. I have. The mechanism plate body 51 is also rotatably attached to the game board holding frame 45. In this mechanism plate body 51,
A prize ball tank 53, which is an example of a prize ball storage member, is located above the prize ball tank 53.
Is provided. Below the prize ball tank 53, there is arranged a prize ball lead-out gutter 55 as an example of an alignment path through which the prize balls flow down while being arranged in three rows. A prize ball payout device 59b (59a), which is an example of a prize ball payout mechanism, is provided at a position for receiving a pachinko ball flowing down the prize ball lead-out gutter 55.

At the lower left corner of the front frame 3, a hit ball firing mechanism 79 is provided. The hitting ball firing mechanism 79 includes a tentacle detection circuit 83 for detecting whether or not the player's hand is touching, and a drive motor driven in response to a detection signal from the tentacle detection circuit 83.
81 and a hitting rod 85 intermittently oscillated by the driving motor 81
And the interlocking rod 87 that moves up and down in conjunction with the intermittent swing of the hitting rod 85
It is composed of Each time the interlocking rod 87 moves up and down, the pachinko balls in the hitting ball supply tray 13 (see FIG. 1) are supplied one by one to a predetermined hitting ball firing position, and are hit by the swinging of the hitting rod 85.

If the pachinko ball hit into the game area 23 by the hitting rod 85 wins the normal winning opening 37a, 37b or the variable winning ball device 29 (see FIG. 1), it is provided on the front side of the mechanism plate 49. The winning ball is guided on the winning ball collecting gutter 61a and supplied to the winning ball processing mechanism 65a. On the other hand, the driving ball is the starting winning opening 33a, 33b, 33c
If the player wins (see FIG. 1), the winning ball is guided to a winning ball collecting gutter 61b provided on the rear side of the mechanism plate 49, and then supplied to the winning ball processing mechanism 65b. This winning ball processing mechanism 6
Since the structure and operation of the winning ball processing mechanism 65a and the winning ball processing mechanism 65b are completely the same, only the winning ball processing mechanism 65a will be described. When the winning ball P is guided to the winning ball processing mechanism 65a, the rotating cam 313a constantly rotated by the drive motor 311.
The winning ball P is pushed out to the winning ball discharge passage 323a by the pushing member 315a swinging right and left. At this time, the stopper member 317a comes into contact with the extruded winning ball and is rotated to unlock the rotating member 319a. When the winning ball P is further pushed out in this state, the rotating member 319a comes into contact with the winning ball, rotates counterclockwise in the drawing, and pushes the interlocking rod 321a upward.

The prize ball payout devices 59a and 59b are provided one by one in the front-back direction of the mechanism plate 49. The prize ball payout device 59a provided at the front is operated in conjunction with the prize ball processing mechanism 65a. The rearward prize ball payout device 59b operates in conjunction with the prize ball processing mechanism 65b. That is, when the interlocking rod 321a is pushed up, the operating mechanism 310a is operated, and the upper valve 307a of the prize ball storage cylinders 305a and 305b (which is normally in a state in which the prize ball can be received) is bent. Gutter 57
Activate to stop the prize ball from the lower valve 309a
To the free state. The lower valve 309a in the free state is rotated counterclockwise by the pressure of the stored prize balls, and a predetermined number (for example, 13) of prize balls are paid out.
On the other hand, if a winning ball is guided on the winning ball collecting gutter 61b, the winning ball processing mechanism 65b is operated, the interlocking rod 321b is pushed upward, and the operating mechanism 310b is operated, as described above. A predetermined number (for example, seven) of prize balls stored in the ball storage cylinder 305c are paid out.

The prize balls paid out from the prize ball payout devices 59a and 59b are discharged into the hit ball supply tray 13 (see FIG. 1) through a prize ball discharge path 67 and a prize ball passage 69. On the other hand, when the pachinko balls become full in the hitting ball supply tray 13 and cannot be stored any more, surplus balls overflow from the prize ball passage 69, and the overflowed surplus balls pass through the communication gutter 71 and surplus ball passages. 73, and further from the continuous gutter 75
(See FIG. 1). A prize ball payout path for guiding and paying out a predetermined number of prize balls based on the prize mode provided on the downstream side of the ball flow of the aligned path by the bent trough 57, the prize ball discharge path 67, and the prize ball path 69. Is configured.

In the figure, 63 is an out ball guiding gutter, and the out port 38
This is for guiding out balls collected from (see FIG. 1) to the outside of the machine. 89 is a game control unit for controlling the electric game machines 25 and 29 (see FIG. 1). The wiring from the game control unit 89 is connected to the relay terminal board 30.
Connected to. Reference numeral 28 denotes a rotating drum driving unit. Reference numeral 62 denotes a winning space switching member described later, and the mechanism plate 49 operates the winning space switching member 62 to pay out a large number of prize balls (for example, 13) for all the winning balls. It is configured so that it can be used on machines. In this case, all the winning balls are guided to the winning ball collecting gutter 61a. Reference numeral 60 denotes a partition plate.

FIG. 3 is a perspective view for explaining an attachment method for attaching the game control unit 89 to the mechanism plate 49.

The partition plate 60 mounted on the mechanism plate 49 is provided with a mounting portion 91, and a mounting substrate 93 is mounted on the mounting portion 91. On the other hand, below the mounting board 93, the mounting board 10 is also provided.
1 is attached to the mechanism plate body 51. Upper mounting board 9
3 is formed with upper position regulating protrusions 95a and 95b and a fitting groove 97 for regulating left and right movement. Also. A mounting urging member 99 made of an elastic material is mounted on the upper mounting substrate 93.

A lower guide groove 103 and a rightward position regulating portion 105 are formed in the lower mounting substrate 101.

Then, first, the operator operates the operation piece 100 of the mounting urging member 99.
Is pulled upward with a finger and elastically deformed.In this state, the fixed side portion 227b of the game control unit 89 is fitted into the lower guide groove 103, and in the fitted state, the game control unit 89 is moved to the right position regulating unit.
The game control unit 89 is slid rightward until it comes into contact with 105. Next, the position regulating protrusion 297 which also serves as a mounting screw is used.
However, the game control unit 89 is fitted to the mechanism groove so as to fit into the fitting groove 97.
Press to the 49 side. In a state where the game control unit 89 is pressed against the mechanism plate 49, the game control unit 89 is moved to the upper position regulating projection 95.
The vertical position of the game control unit 89 is adjusted so as to enter the lower side of a and 95b. When the position adjustment in the left-right direction and the up-down direction is completed, the operation piece 100 is released, and the fixing piece 227a is attached to the mounting board by the elastic force of the mounting urging member 99.
The game control unit 89 is elastically held by being pressed to the 93 side.

In the drawings, 209a and 209b are heat radiation holes. Reference numeral 283 denotes a wiring cover which collectively has the openings 261a, 261b, and 261c on one side.
It is for deriving from 295 to the outside. 63 is an out ball guiding gutter.

FIG. 4 is a vertical cross-sectional view showing an attached state of the game control unit 89.

In the drawing, reference numeral 14 denotes a hitting ball supply device for supplying pachinko balls stored in the hitting ball supply tray 13 to the hitting ball firing position one by one every time the hitting rod 85 swings. The pachinko ball supplied by the hit ball supply device 14 has a hitting rod 85
And is shot into the game board 9 through the firing rail 20. Various winning ports such as a starting winning port 33a are formed on the front surface side of the game board 9 so that a driving ball can win. The driving balls that did not win the various winning ports are collected from the out ports 38 as out balls.

On the back side of the game board 9, a mechanism plate 49 is provided,
By the winning ball guiding gutter 40 of the winning ball collecting cover body 39 provided on the mechanism plate 49, the winning ball winning the starting winning opening 33a is guided to a predetermined path. This winning ball induction gutter 40
Is provided with a start winning ball detection switch 34a,
Variable display device that detects winning balls and based on the detection output
It is used for game control such as variably displaying 25 (see FIG. 1). In addition, the starting winning opening is 33b, 3
3c (see FIG. 1), each of which is provided with a start winning ball detection switch 34b, 34c. The winning balls that have won the start winning ports 33a, 33b, and 33c are guided to the winning ball collecting trough 61b, and are supplied to the winning ball processing mechanism 65b as described with reference to FIG. The winning balls that have won the winning holes 37a, 37b, 29 etc. other than the starting winning holes 33a, 33b, 33c are
It is led to the winning ball collecting gutter 61a provided on the front side of
As described with reference to FIG. 2, it is supplied to the winning ball processing mechanism 65a.

The driven ball that does not win any of the winning ports is collected from the out port 38, guided into the out ball guiding gutter 63 by the out ball guiding member 38a, and discharged out of the machine. In the drawing, reference numeral 62 denotes a winning space switching member.
By operating 62, the upper wall 62a closes the upper part of the winning ball collecting gutter 61b and the side wall 62b closes the winning ball guiding opening 64,
The guide path of the winning ball is switched. In this case, the winning ball collecting gutter
40 is used to guide a winning ball to the winning ball collecting gutter 61a. Reference numeral 71 in the figure denotes a connecting gutter, and as described in FIG. 2, surplus balls when the pachinko balls in the hit ball supply tray 13 are full are discharged to the surplus ball tray 17 (see FIG. 1). It is a gutter to do. 45 is a game board holding frame for holding the game board 9, 8 is glass provided on the glass door 7, 21 is a guide rail, and 11 is a front plate.

As described above, the winning balls and the out balls are guided to the mechanism plate 49 mainly made of synthetic resin provided on the back side of the game board 9, and the mechanism plate 49 and the winning balls and the out balls are guided. Static electricity is easily generated due to friction with the ball.

The game control unit 89 is mounted on the mechanism plate 49 side by a pair of upper and lower mounting substrates 93 and 101. The upper mounting board 93 is
The lower case 215 is provided on the mounting portion 91 protruding from the partition plate 60, and can be held in a state where the lower case 215 is pressed toward the mounting substrate 93 by the mounting urging member 99 as described above. The lower side of the lower case 215 is held in a state of being fitted to the lower mounting board 101.

The circuit board 251 housed in the circuit board case constituted by the upper case 107 and the lower case 215 is a lower case 2
Installed on 15. In the drawing, reference numeral 231a denotes a mounting portion for mounting the circuit board 251. The screw 231a is inserted into a ground line extending mounting hole 263a formed on the circuit board 251.
The circuit board 251 can be fixed by screwing into the 231a.
On the other hand, reference numeral 239b is a mounting piece, and the mounting piece 239b is inserted into a mounting hole 263d formed on the circuit board 251 where the ground line does not extend, and the mounting piece 239b is used for the mounting hole.
The inner peripheral edge of 263d is fitted and held. In the drawing, reference numeral 271 denotes a ground line cutout, which is a mounting piece 239b of the circuit board 251.
It is configured such that the ground line 265 does not contact the mounting piece 239b in the fitted state. Since the circuit board 251 is fixed and held as described above, the ground line 265 of the circuit board 251 and the lower case 215 are electrically connected to each other by the ground line extending mounting holes 263a and 263 in contact with the mounting portions 231a and 231b. State. As a result, the ground line 265, the lower case 215, and the upper case 107 have the same potential, and discharge due to static electricity between the upper case 107, the lower case 215, and the circuit board 251 can be prevented, and the adverse effect of noise is minimized. There is an advantage that can be prevented. Further, the circuit board 251 includes
A plurality of conductive holes 267 for electrically connecting the front and rear ground lines 265 are formed. And the mechanism plate 49
If a discharge occurs between the circuit board case and the circuit board case, the discharge voltage flows into the ground line 265 on the back surface of the circuit board 251 through the mounting portions 231a and 231b. However, it passes through the plurality of conduction holes 267 many times and goes around the front and back of the ground line 265 many times, so that a voltage drop occurs until the current reaches the MPU, RAM 273 or ROM 275. In other words, the plurality of conduction holes 267 allow the mounting portions 231a and 231b to
The distance of current flow to U, RAM273, ROM275 becomes longer, and as a result, MPU, RAM273, ROM275
Can be protected as much as possible from the adverse effects of noise.

When the game control unit 89 is mounted on the mechanism plate 49 side, as shown in the drawing, the first space 2 is provided between the mechanism plate 49 and the lower case 215.
99 is formed, and transmission of static electricity generated in the mechanism plate 49 to the lower case can be prevented as much as possible. Also, the circuit board 251
In the state of being stored in the circuit board case, a second space 301 is formed between the lower case 215 and the circuit board 251, and a third space 303 is formed between the circuit board 251 and the upper case 107. By forming the second space 301 and the third space 303 in this manner, the discharge voltage applied to the circuit board case is directly applied to the circuit board 251 without passing through the mounting portions 231a and 231b which are the regular routes. Can be prevented. Further, since the volumes of the second space 301 and the third space 303 are different, the air between the second space 301 and the third space 303 is generated due to heat generated from the circuit board 251 during use. Of the second space 301 and the third space
There is an advantage that convection of air is generated between the space 303 and the heat in the circuit board case can be uniformly discharged from the heat radiation holes 209a, 209b, and 209c. In the drawing, reference numeral 109 denotes an upper surface plate of the upper case 107. 253 is a substrate body.

 FIG. 5 is an exploded perspective view showing the game control unit 89.

The game control unit 89 includes an upper case 107 as an example of a first divided body.
And a lower case 215 as an example of a second divided body, and a circuit board 251 housed in the circuit board case. The upper case 107 and the lower case 215 are formed of a conductive metal plate. In addition, you may form with a conductive synthetic resin. The circuit board 251 has connection terminals 257a-2
57d is provided, and various circuit elements 255 and MPU, RAM 273, and ROM 275, which are main parts of an electronic circuit, are attached, and have a function of controlling the electric game machine.
Further, at four corners of the circuit board 251, ground line extending mounting holes 263a, 263b extending the ground line of the circuit board are provided.
Normal mounting hole 263 where the ground line does not extend
c, 263d, and the ground line extending mounting holes 263a, 263b and the mounting holes 263c, 263d allow the second
A mounting hole for mounting the circuit board 251 is formed on the divided body.

The lower case 215 is formed by stamping a single plate and then bending. In the figure, 231a and 231b are mounting portions, and 239a and 239b are mounting pieces. This mounting piece 239a,
The width 239b is smaller than the diameter of the mounting holes 263c and 263d of the circuit board 251 so that the mounting pieces 239a and 239b can be inserted into the mounting holes 263c and 263d. To attach the circuit board 251 to the lower case 215, first attach the mounting pieces 239
a, 239b are inserted into the mounting holes 263c, 263d, and the mounting pieces 239a, 23
Mounting holes 263c, 263d in fitting grooves 241a, 241b formed in 9b
The circuit board 251 is slid so that the inner peripheral edge of the board enters. Next, screws as an example of screws are inserted from the ground line extending mounting holes 263a, 263b, and the screws are screwed into mounting holes 233a, 233b formed in the mounting portions 231a, 231b,
The circuit board 251 is fixed to the lower case 215. In this manner, the circuit board 251 is not fixed to all four corners of the circuit board 251 by screws, but is effectively fixed to the mounting pieces 239a and 239b and fixed with the minimum number of screws.
Is configured to be fixed. The mounting pieces 239a, 2
By 39b, an engagement fitting portion that engages with the mounting hole of the circuit board is configured. The mounting portions 231a and 231b form a screw fastening portion that can be fastened to the mounting hole of the circuit board by a screw. By the engagement fitting portions 239a, 239b and the screw fastening portions 231a, 231b, a plurality of mounting portions formed on the second divided body corresponding to a plurality of mounting holes provided on the circuit board. It is configured.

217 in the figure is a lower plate, 223a to 223g (223a, 223c, 223e, 223g
Is not visible in the drawing), 219 is an upright wall, each of which is 1
The plate is formed by bending. Standing wall 219
The pair of engaging pieces 221a and 221 as an example of the engaging protrusions
b is formed. The side plates 223a (223b) have mounting holes 225a, 225 into which screws, which are examples of screws, are screwed.
25b (225a is not visible in the drawing) is drilled.

The upper case 107 has a top plate 109 and side plates 111a, 111b, 111c.
(111c is shown in FIG. 6, 111a is not visible in the drawing), 113, and heat dissipation holes 209a, 209b, 209c are formed in the upper case 107 and the side plates 111a, 111b, 111c, respectively. The heat generated from 251 can be released to the outside.
In the figure, reference numeral 283 denotes a wiring cover, which has a mounting hole 287 and a fitting protrusion.
285a and 285b are formed. The fitting protrusions 285 are fitted into fitting holes 201a and 201b formed on one side of the upper surface plate 109.
a, 285b fitted and aligned with the mounting hole
A screw, which is an example of a screw, is inserted from 287, formed on the upper surface plate 109, and screwed into the mounting hole 203 to attach the side plate portion 291 to the upper case 107. In the figure, 259a to 259d are connection terminals, which are inserted and connected to the connection terminals 257a to 257d, respectively. In that connection state, each connection terminal 259a ~
Wirings 261a to 261d connected to 259d are
(See FIG. 3). A power supply wire insertion groove 293 is formed in the side plate portion 291, and power supply wiring can be inserted through the power supply wire insertion groove 293.

In the drawing, 117a and 117b are locking pieces as an example of the engaging portion,
Engagement holes 119a and 119b are respectively formed. The pair of engaging holes 119a and 119b are respectively provided with the engaging pieces 221a and 221 on the lower case 215 side.
21b is inserted. In this state, the side plate 11 of the upper case 107
A screw as an example of a screw is inserted from mounting holes 115a and 115b (115a is not visible in the drawing) drilled in 1a and 111b.
Screws are screwed into the mounting holes 225a and 225b formed on the fifth side, and the upper case 107 and the lower case 215 are integrally fixed. The mounting holes 115a and 115b form a screw fastening portion for fastening the first and second divided bodies together by screws and integrally forming the first and second divided bodies. The engagement holes 119a and 119b may be formed on the lower case 215 side, and the engagement pieces 221a and 221b may be formed on the upper case 107 side. The mechanism plate 49 constitutes a prize ball payout mechanism provided on the back side of the ball game machine and mainly formed of a synthetic resin material. The engagement pieces 221a, 221b, 117a, 117b
Accordingly, an engaging portion capable of locking the first divided body and the second divided body and an engaging portion formed integrally with the divided body are configured. The mounting holes 225a, 225b, mounting holes 11
5a and 115b constitute a screw fastening portion capable of fastening the first divided body and the second divided body with screws.

FIG. 6 is a front view showing the circuit board 251 attached to the upper case 215.

In the drawing, reference numeral 265 denotes a ground line provided on the front surface and the back surface of the circuit board 251. A plurality of conduction holes 267 for electrically connecting the ground lines 265 are formed. 281a and 281b are the ground lines 265
Are extended to the mounting holes, and ground line extending mounting holes, which are mounting holes from which the ground lie is extended, are indicated by 263a and 263b in the figure. The ground line extending portions 281a and 281b are connected to the circuit board 2
Of the mounting holes 263a to 263d provided at the four corners of 51, the MPU as the main part of the control circuit, the mounting hole 263a farther from the place where the RAM 273 and the ROM 275 as the main part of the control circuit are provided, Only 263b is formed. In other words, the MP
U, mounting holes 26 formed in the immediate vicinity of RAM 273 and ROM 275
A ground line notch 271 is formed in each of 3c and 263d, so that the ground line 265 does not extend to the mounting holes 263c and 263d. 239a and 239b are mounting holes 263
It is a mounting piece inserted into c, 263d.

A bypass capacitor (not shown) is provided between a power input unit such as the MPU, the RAM 273, the ROM 275, and the circuit element 255 as a main part of the circuit board 251 and the ground line 265. This bypass capacitor is a well-known one composed of an electric field capacitor (tantalum capacitor) and a non-polar capacitor. The bypass capacitor absorbs a surge of an input voltage to the power supply input portion with respect to a ground line, and generates noise from the power supply input portion. Can be prevented as much as possible.

The portion surrounded by the dashed line in the drawing is the power supply circuit portion 277,
The power supply circuit section 277 is provided with a choke coil 279. With this choke coil 279, the AC component of the power supplied from the power supply is removed, and noise entering from the power supply can be reduced.

In the figure, 257a to 257d are connection terminals, 219 is an upright wall, 221a, 22
1b is a locking piece 227a, 227b, 227c is a fixing piece. In the figure, reference numeral 269 denotes a pattern portion of the circuit board 251.

 FIG. 7 is a sectional view of the game control unit 89.

A game control unit 89 is configured by a circuit board case constituted by the lower case 215 and the upper case 107 and a circuit board 251 housed in the circuit board case.

Mounting pieces 239a, 239b (23
9a is shown in FIG. 5, and fitting grooves 241a and 241b (241a
(See the figure). These fitting grooves 241a, 241b
The circuit board is formed in a tapered shape having an angle of θ.
By sliding 251 in the direction shown by the arrow in the figure, the mounting holes of the circuit board 251 are inserted into the tapered fitting grooves 241a and 241b.
The peripheral edges of 263c and 273d are fitted and held together. 237a and 237b (see FIG. 9 for 237b) are contact portions that contact the back surface of the circuit board 251. Then, the circuit board 251 in this fitted state is passed through the ground line extending mounting holes 263a, 236b (see FIG. 5 for the 263a) to the mounting portions 231a, 231b (see FIG. 5 for the 231a). Fix 251. The lower case 21 of the circuit board 251
In the fixed state to 5, the mounting pieces 239a and 239b are configured so that the ground line 265 does not contact.

On one side of the upper plate 109 of the upper case 107, fitting holes 201a, 2
01b (see FIG. 5 for 201a) is drilled, and fitting protrusions 285a and 285b (see FIG. 5 for 285a) formed in the wiring cover 283 are fitted into the fitting holes 201a and 201b. In the fitted state, the wiring cover 283 is attached to the upper case 107.
Then, with the wiring cover 283 attached, an opening 295 is formed, and the wirings 261a to 261d are led out from the opening 295. In the figure, reference numeral 291 denotes a side plate, and 113 denotes a side plate.

In the figure, 221a and 221b (221a refer to FIG. 5) are lower case 2
An engagement piece formed on the upright wall 219 of the upper case 107
Are engaged with engaging holes 119a and 119b (see FIG. 5 for 119a).

In the figure, 111c is a side plate, 223b, 223d, 223f are side plates, 227c
Is a fixed piece, 259c and 259d are connection terminals, 271 is a ground line cutout, and 253 is a substrate body.

FIG. 8 is a plan view for explaining a method of processing the upper case 107.

First, one plate is pressed to form a plate having an outer peripheral shape as shown in FIG.
115a, 115b, engagement holes 119a, 119b, engagement holes 201a, 210b, mounting holes 20
3. Holes 209a, 209b, and 209c are punched out. Next, the concave portions 207a and 207b for spot welding and the convex portions 207c and 207d for spot welding are processed so that welding can be performed reliably. Next, the first bent portions 211a to 211d are bent,
Further, the second bent portions 213a to 213d are bent, and the welded portions 205a and 205b and the side plate 111c are welded. In addition, 1 in the figure
17a and 117b are locking pieces, 113 is a side plate, and 109 is a top plate.

FIG. 9 is a plan view for explaining a method of processing the lower case 215.

First, one plate is pressed and the outer diameter is punched, and then the fitting grooves 241a and 241b are punched. Next, cut the one-dot chain line in the figure, and attach the mounting holes 225a, 225b, and 23.
Drill holes 3a and 233b. Next, the first bent portion 2
43a and 243b are bent and the second bent portions 245a to
Bend 245f. At this stage, the engagement pieces 221a, 221b
Is formed. Next, the third bent portions 247a to 247f are bent. At this stage, the upright wall 219 and the mounting portions 231a and 231b
Is formed. Note that 229a and 229b in the figure are the mounting portions 2 respectively.
This is the vertical part of 31a, 231b. Finally, the fourth bent portion 249a
Bend ~ 249g. Thereby, the side plates 223a-
223g, fixing pieces 227a to 227c, and mounting pieces 239a and 239b are formed. In the drawing, 235a and 235b are vertical portions of the mounting pieces 239a and 239b, respectively, and 237a and 237b are contact portions of the mounting pieces 239a and 239b, respectively.

As described above, the upper case 107 and the lower case 215
Since it is formed by processing a single metal plate, it is not necessary to specially form and provide a part or the like for mounting the circuit board 251, and there is an advantage that the number of parts can be reduced. In this embodiment, the upper case 107 and the lower case 21
Although 5 is formed of a metal plate, the upper case 107 and the lower case 215 may be formed by integral molding of a conductive synthetic resin.

According to the first aspect of the present invention, a circuit board for controlling an electric device is surrounded by a conductive circuit board case, so that a prize ball is paid out with the payout of the prize ball. The adverse effect of static electricity on the circuit board due to the charging of the mechanism can be minimized. Moreover, a circuit board case is formed by integrating the divided bodies including the first divided body and the second divided body, and the first divided body and the second divided body are engaged with each other by the engaging portion. Since it can be stopped and can be fastened by a screw at the screw fastening portion, it can be fastened by the screw while being locked by the engagement portion, and the secure fastening by the screw becomes possible and the engagement portion becomes The number of screw fastening portions provided can be reduced, and a complicated screw fastening operation can be reduced. Further, since the engaging portion is formed integrally with the divided body, it is compared with a case where an engaging portion formed of a separate component from the divided body is attached to a predetermined portion of the divided body. As a result, it is possible to prevent the attachment portion from being loosened or displaced, to increase the strength of the engagement portion, and to reduce the number of components and the labor required for the production and the production cost. For this reason, it is possible to simplify the complicated screw fastening work for integrating the first divided body and the second divided body as much as possible, while taking the simplification measures to reduce the complexity of the divided body. It is also possible to prevent the occurrence of problems such as a decrease in integration strength and a reduction in manufacturing cost.

According to the second aspect of the present invention, in addition to the effects of the first aspect, the opening formed in the first divided body constituting the circuit board case is formed in a plane of the circuit board. Since the opening is larger than the shape, the circuit board can be easily inserted from the large opening. In this state, the opening is closed by the second divided body, so that the circuit board can be inserted into the circuit board case. The circuit board can be easily accommodated.

According to the third aspect of the present invention, in addition to the effects of the first aspect of the present invention, it is possible to minimize the adverse effects of static electricity on the circuit board that controls the electric gaming device disposed on the game board. Thus, the inconvenience that the control of the electric game machine goes out of control can be prevented as much as possible.

[Brief description of the drawings]

FIG. 1 is an overall front view showing a pachinko game machine which is an example of a ball game machine according to the present invention. FIG. 2 is an overall rear view showing the internal structure of the pachinko gaming machine. FIG. 3 is a perspective view for explaining a mechanism for attaching the game control unit to the mechanism plate. FIG. 4 is a longitudinal sectional view showing a state where the game control unit is attached to the mechanism plate. FIG. 5 is an exploded perspective view for explaining the overall structure of the game control unit. FIG. 6 is a front view showing the circuit board attached to the upper case. FIG. 7 is a cross-sectional view for explaining a main part of the game control unit. FIG. 8 is a plan view for explaining a method of processing the upper case. FIG. 9 is a plan view for explaining a method of processing the lower case. In the figure, 1 is a pachinko game machine as an example of a ball game machine, 49 is a mechanism plate, 25 is a variable display device as an example of an electric game device, 29 is a variable winning ball device as an example of an electric game device, 251 is A circuit board, 53 is a prize ball tank as an example of a prize ball storage member, 55 is a prize ball outlet trough as an example of an alignment path, 59a and 59b are prize ball payout devices as an example of a prize ball payout mechanism, 108 is an opening, 107 Is an upper case of an example of a first split body, 215 is a lower case of an example of a second split body, 263a and 263b are ground line extending mounting holes of an example of mounting holes, 263c and 263d are mounting holes, 231a, 231b is a mounting part,
239a, 239b is a mounting piece of an example of a mounting portion, 241a, 241b is a fitting groove, 221a, 221b, 117a, 117b is an engaging piece constituting an engaging portion, 119a, 119b is an engaging hole, 225a, 225b Is a mounting hole that forms a part of the screw fixing part, and 115a and 115b are mounting holes that form a part of the screw fixing part.

Claims (3)

(57) [Claims] 1. A prize ball payout mechanism mainly formed of a synthetic resin material provided on the back side of a ball game machine, and a circuit board for controlling an electric device provided in the ball game machine. A conductive circuit board case surrounding the circuit board, wherein the prize ball payout mechanism includes: a prize ball storage member for storing a prize ball to be paid out to a player; and a lower portion of the prize ball storage member. And a prize ball payout path for guiding and paying out a predetermined number of prize balls based on a prize mode, provided on the downstream side of the ball flow of the alignment path. The circuit board case is configured by integrating divided bodies including a first divided body and a second divided body, and can lock the first divided body and the second divided body. An engagement portion, and the first divided body and the second divided body are screwed together. And a fastened capable screw fastening portion, the engaging portion is characterized in that it is formed integrally with the divided body, pinball game machine. 2. The semiconductor device according to claim 1, wherein the first divided body has an opening that is larger than a planar shape of the circuit board, and the second divided body closes the opening. The ball game machine according to claim 1, wherein 3. An electric game machine provided at least on a game board of a ball game machine, wherein the circuit board controls the electric game machine. The ball game machine according to claim 1.