JPH0515351Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a fraud prevention device for pachinko machines.

[Prior Art] As is well known, in current pachinko machines,
Most of them appear on the game board in the first state, which is advantageous to the player, and in the second state, which is disadvantageous to the player.
A variable prize winning device (big prize opening) that can freely change the state is provided, and when a hit ball enters a specific winning hole or a specific game condition is satisfied, the variable winning device is set to the first state for a certain period of time. This gives players an opportunity to win a large amount of prize balls at once.

[Problems that the invention aims to solve] However, in a pachinko machine equipped with a variable prize winning device as described above, it is difficult to insert a piece of wire or piano wire onto the game board from around the glass door frame on the front of the pachinko machine. If a prize ball is hooked onto the opening/closing member of the variable prize winning device and the game is played with it left open in the first state, a large amount of prize balls will be released in a very short period of time. This will be a huge loss for the hall side. Therefore,
In such pachinko machines, it is absolutely necessary to prevent such illegal games.

[Means for solving the problems] The present invention was proposed in view of the above, and includes a motor that rotates the ball rod and fires the ball at the firing position onto the game board, and a motor that is arranged on the game board. a variable prize winning device that can freely change between a first state that is advantageous to the player and a second state that is disadvantageous to the player; and a signal from an electronic control unit when specific gaming conditions are met; A pachinko machine comprising: a drive means for changing the variable winning device to a first state by a detection switch that detects that the variable winning device is in the first state; is connected to the power supply circuit of the motor, and when there is no signal from the electronic control unit to the drive means, the power supply circuit of the motor is opened by the signal from the detection switch, thereby stopping the motor. By making the game impossible, illegal games are prevented.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings. Figure 1 shows the front view of the Pachinko machine, Figure 2 shows the back view of the Pachinko machine, 1 shows the front frame of the Pachinko machine,
2 is a game board, 3 is a glass door frame that covers the front of the game board 2, and 4 is a ball hitting handle provided at the lower front of the front frame 1.

Reference numeral 5 denotes a variable prize winning device disposed at the lower part of the game board 2, and this variable winning device 5 has a ball entrance that is wide open horizontally at approximately the center of the mounting board 6, as shown in FIGS. 3 and 4. 7 is formed, and an opening/closing plate 8 is provided in front of the ball inlet 7 so as to be freely openable and closable toward the front side. The lower side of the opening/closing plate 8 is pivotally supported by a shaft 9, and is normally balanced in the direction of opening the ball inlet 7, and has an engaging arm 10 protruding from the side edge of its back surface. Reference numeral 11 denotes a box frame provided in communication with the ball inlet 7 on the back side of the mounting board 6, and a ball outlet 12 is formed in the back of the box frame for guiding the winning balls to a predetermined winning path. box frame 1
A lever 13 is swingably supported by a shaft 14 on the side edge of the lever 1, and its tip is brought into contact with the upper surface of the engaging arm 10. A solenoid 15 serving as a driving means for opening and closing the opening/closing plate 8 is provided at an upper position of the lever 13, and the lower end of a plunger 16 of the solenoid 15 is brought into contact with the upper surface of the lever 13. solenoid 1
When the plunger 5 is demagnetized, a coil spring 17 wound around the plunger 16 rotates the lever 13 downward to push down the engagement arm 10, thereby closing the opening/closing plate 8. It is composed of

Therefore, when the solenoid 15 is energized and the plunger 16 is pulled upward, the locking of the engagement arm 10 by the lever 13 is released and the opening/closing plate 8 opens forward under its own weight as shown by the chain line in FIG. The first state is advantageous for the player since it is possible to accept the balls hit into the ball entrance 7. On the other hand, solenoid 15
When the plunger 16 is demagnetized, the coil spring 17
The lever 13 pushes down the engaging arm 10, and the opening/closing plate 8 closes the ball entrance 7 as shown by the solid line in FIG. 4, which is a disadvantageous second state for the player. The change is activated. Further, the solenoid 15 is connected to the electronic control section 18 via a drive circuit, and for example, when a ball hits a specific winning hole on the game board, or when a winning hole is set in advance by the electronic control section 18, the solenoid 15 is It is designed to be energized for a certain period of time when game conditions are met.

Reference numeral 19 denotes a hitting rod rotatably supported by a shaft 20 on the lower part of the back surface of the front frame 1, 21 an engagement pin protruding from the hitting rod 19, and 22 a pull spring for pulling the hitting rod 19. One end is connected to the spring adjusting device 23, and the other end is connected via a wire 24 to a take-up pulley 26 fixed to the shaft 25 of the ball striking handle 4. Ball strength is adjusted. 27 is a motor for firing balls, and a cam 28 fixed to the drive shaft of this motor is connected to the engagement pin 21 of the ball rod 19.
By the rotation of the cam 28, the ball rod 1 is engaged.
9 is rotated intermittently to fire the ball. A power switch 29 is pressed by the outer cam portion of the take-up pulley 26, and is connected in series to the power circuit of the motor 27, and is pressed by the rotation of the ball striking handle 4 to close the circuit.
start.

According to the present invention, the variable winning device 5
A detection switch 30 is provided to detect that the opening/closing plate 8 is in the first state. This detection switch 3
0 is a micro switch in this embodiment, which is pressed by the switch piece 31 when the lever 13 is rotated downward to close the circuit, as shown by the solid line in FIG.
It is provided on the back surface of the mounting board 6 in relation to the lever 13 so that when the lever 13 rotates upward and the opening/closing plate 8 opens as shown by the chain line in the figure, the pressure is released and the circuit is opened. It is also conceivable that instead of the micro switch, for example, a permanent magnet is provided on the lever 13, a reed switch is provided on the side wall of the box frame 11, and the reed switch is opened and closed by rotation of the lever 13.

FIG. 5 is a block circuit diagram of the device of the present invention.
The detection switch 30 is connected in series to the power supply circuit of the motor 27 and is connected to the solenoid 15.
It is connected in parallel to a relay contact 33 actuated by a relay coil 32 connected to a drive circuit.

Next, the operation of this embodiment will be explained with reference to FIG. When the opening/closing plate 8 of the variable prize winning device 5 is closed, the detection switch 30 is closed. When the player rotates the ball hitting handle 4 in this state, the power switch 29 is closed and the motor 27 is driven to drive the ball hitting rod 1.
Rotate 9 to fire the ball onto the game board. and,
When a hit ball enters a specific prize opening or when preset game conditions are met, a solenoid 15 is energized by a signal from an electronic control section 18. Therefore, the opening/closing plate 8 of the variable prize winning device 5 is opened for a certain period of time, thereby opening the detection switch 30, but the relay contact 33 is closed by the operation of the relay coil 32. The power supply circuit of the motor 27 is maintained in a closed state so that the game can be continued. After a certain period of time, when the solenoid 15 is demagnetized, the relay coil 32 is demagnetized and the relay contact 33 is opened, and at the same time, the opening/closing plate 8 is closed and the detection switch 30 is closed, maintaining the power circuit of the motor 27 in the closed state. do.

On the other hand, when the opening/closing plate 8 of the variable prize winning device 5 is closed and the power supply circuit of the motor 27 is in a closed state, if a player inserts a wire, piano wire, etc. onto the game board and illegally opens the opening/closing plate 8, it is detected. In response to the switch 30 being opened, the power supply circuit for the motor 27 is opened, thereby stopping the motor 27 and disabling the game.

[Effects of the invention] As is clear from the above, according to the invention, with a simple structure, it is possible to reliably perform fraudulent games in which multiple prize balls are released by opening the opening/closing plate of the variable prize winning device using a wire or piano wire. Therefore, it is possible to prevent the hole side from suffering a huge loss due to such illegal games.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and Fig. 1 is a front view of a pachinko machine, Fig. 2 is a back view of the pachinko machine, Fig. 3 is a perspective view of a variable winning device, and Fig. 4 is a variable winning device. Vertical side view explaining the action of the device, No. 5
The figure is a block circuit diagram. 2... Game board, 5... Variable winning device, 15...
Solenoid serving as a driving means, 18... electronic control unit,
27...Motor, 30...Detection switch.

Claims (1)

[Scope of Claim for Utility Model Registration] A motor that rotates a ball rod and fires balls at a firing position onto a game board, and a first state that is arranged on the game board and is advantageous to the player. and a variable winning device that can freely change to a second state that is disadvantageous to the player, and when a specific game condition is satisfied, the variable winning device changes to the first state by a signal from an electronic control unit. A pachinko machine is provided with a detection switch for detecting that the variable prize winning device is in the first state, and the detection switch is connected to a power supply circuit of the motor, A tamper prevention device for a pachinko machine, characterized in that when there is no signal from an electronic control section, a power supply circuit for a motor is opened by a signal from a detection switch.