JPH06244A - Antistatic method for pachinko machine - Google Patents

Abstract

PURPOSE:To prevent the malfunction of an electronic circuit in a pachinko machine by providing a highly conductive metal foil in such a way as formed on the back of a game board, or clamped between the layers of the board. CONSTITUTION:A highly conductive metal foil 2 is so laid as to cover the back of a game machine 1, and a prize ball guide chute 8 is fastened to the foil 2 with screws 9. Also, a component drive electronic circuit board case 10, a component drive solenoid 11, a terminal block 12, a switch, an indicator and the like, are fixed to the foil 2 with screws. Consequently, the chute 8, the case 10, the solenoid 11, the terminal block 12 and the like are all electrically continuous to one another via the foil 2, and always kept at the same potential. According to this construction, the occurrence of malfunction or a failure due to abnormal current across an electronic circuit can be surely prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antistatic method for a pachinko gaming machine, which prevents the pachinko gaming machine from being charged with static electricity and prevents its electronic circuit from malfunctioning.

[0002]

2. Description of the Related Art Generally, an electronic circuit such as a microcomputer in various electronic devices is prevented from malfunctioning due to external noise of static electricity generated around the electronic circuit.
Conventionally, the electronic circuit board is housed in a conductive metal case.

[0003]

However, in the case of a pachinko game machine, as is well known, a non-conductive veneer game board is provided with electronic circuit boards, plastic ball guide troughs, parts, etc. Since the pachinko balls are dropped violently along the front and back of the game board, which are arranged at appropriate intervals, static electricity is easily generated and a large potential difference occurs between the parts, even if the electronic circuit board is in a metal case. Even when stored, the discharge current could not be prevented from flowing into the electronic circuit board, causing malfunction or failure.

As is well known, the game board of a pachinko gaming machine has a role of changing the winning situation by "bending" due to the weight of a pachinko ball peculiar to a veneer board. Therefore, in order to eliminate the above static electricity, a conductive material other than the plywood board is used. The material was difficult to use.

[0005]

The antistatic method for a pachinko game machine according to the present invention solves the above problems, and a metallic foil having good conductivity is stretched between the back surface of the game board or the layers of the game board. It is characterized by what is done.

[0006]

The components such as the electronic circuit board and accessory are fixed to the game board by nailing or the like, so that the components are electrically connected to each other through the metal foil and the potential difference is generated between the entire game board and the components. Not have a virtual ground effect.

[0007]

Embodiments of the present invention will now be described with reference to the drawings. 1 to 3 show a game board of a pachinko game machine according to the present invention. This game board 1 is made of a veneer board in which thirteen thin plates are stuck together, on the surface of which a printed paper 6 of a pattern is stuck, a synthetic resin film 7, nails 3, winning holes 4, windmills 5, other accessories, etc. Is nailed to the surface.

Reference numeral 2 denotes a metal foil (aluminum foil) which is stretched on the back surface of the game board 1 and has a good conductivity. The winning ball guide gutter 8 is fixed onto the metal foil 2 with screws 9 and the accessory is driven. The electronic circuit board case 10, the accessory driving solenoid 11, the terminal terminal mounting board 12, other switches, lamps and the like are screwed onto the metal foil 2, respectively. As a result, the winning ball guide trough 8, the accessory driving electronic circuit board case 10, the accessory driving solenoid 11, the terminal terminal mounting board 12 and the like are electrically connected to each other through the metal foil 2 and are always at the same potential. It is maintained and the charging is prevented. It should be noted that the metal foil 2 may be made slightly wider than the game board 1 and its peripheral edge portion 13 may be bent to the peripheral end surface of the game board 1 so as to be electrically connected to the front frame on which the game board 1 is set. Therefore, it is possible to prevent the front frame from being charged.

The game board 1 of the embodiment shown in FIGS. 4 and 5 comprises a metal foil 2 sandwiched between a veneer plate and a printing paper 6. In this case, the game board 1 has a surface. The accessory 15, which is fixed by the nail 14, the winning opening 4, the windmill 5, etc., is the nail 14,
Since they are electrically conducted through the metal foil 2, it is possible to always keep the same electricity of various parts, accessories, etc. attached to the front side of the game board 1, and an electrical difference, that is, charging is prevented.

Since the metal foil 2 has extensibility, it does not interfere with the "bending" peculiar to the plywood board. Therefore, even if the metal foil 2 is stretched, it does not spoil the original interest of the pachinko machine. Further, like the game board 1, if the metal foil 2 is stretched over the frame, it is possible to prevent the front frame from being charged.

[0011]

As described above, according to the antistatic method for a pachinko gaming machine of the present invention, the electrification of the pachinko gaming machine is prevented,
In particular, there is a beneficial effect that it is possible to surely prevent an abnormal current from flowing through the electronic circuit to cause malfunction or failure. Also, the malfunction of electronic circuits due to external static electricity noise can be easily pursued along the discharge path, and countermeasures for avoidance can be made uniformly instead of individually for each product, which is an advantage that static electricity countermeasures can be taken easily. .

[Brief description of drawings]

FIG. 1 is a partial sectional perspective view of a game board showing an embodiment of an antistatic method for a pachinko gaming machine of the present invention.

FIG. 2 is a vertical cross-sectional view of a game board.

FIG. 3 is a rear perspective view of the game board.

FIG. 4 is a front perspective view of a game board.

FIG. 5 is a vertical sectional view of the game board.

[Explanation of symbols]

 1 Game Board 2 Metal Foil 3 Nail 4 Winner 5 Windmill 6 Printing Paper 7 Synthetic Resin Film 8 Winning Ball Guide Gutter 9 Screw 10 Electronic Circuit Board Case 11 for Actuator Drive Solenoid for Actuator Drive

Claims (1)

[Claims] 1. An antistatic method for a pachinko game machine, comprising a metallic foil having good conductivity and being stretched between the back surface of the game board or between layers of the game board.