JPH06269552A - Pachinko machine - Google Patents

Abstract

PURPOSE:To provide a pachinko machine in which static electricity with which pachinko balls and a mechanism board are charged is not discharged to an electronic circuit board. CONSTITUTION:In a pachinko machine 1 having a game board mounting frame 4 secured to the back side of a front frame 3 openably mounted on the front side of a side frame 2, a game board 5 removably mounted on the game board mounting frame 4, a mechanism board 8 made of a synthetic resin and pivotally openably attached to one side of the game board mounting frame 4, and a main board box 20 located in the lower portion of the back side of the mechanism board 8 to enclose an electronic circuit board for controlling the operating states of a variety of electrically operating equipment, the game board mounting frame 4 and the bottom plate of the main board box 20 are both formed of electrically conductive members such as iron plates, and a contact piece 24 which is in the form of L when seen from one side is projected from the bottom plate of the main board box 20. An opening 25 is formed in the position of the mechanism board 8 corresponding to the contact piece 24, and the contact piece 24 is exposed to the front side of the mechanism board 8 from the opening 25 and brought into contact with the game board mounting frame 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pachinko machine, and more particularly to a pachinko machine for preventing static electricity from being discharged to an electronic circuit board that controls the operating states of various electric operating devices of the pachinko machine. .

[0002]

2. Description of the Related Art As is well known, in a general pachinko machine, a game board mounting frame made of synthetic resin is fixed to the back side of a front frame, and a prize ball tank and a prize ball payout are provided on one side of the game board mounting frame. A mechanism plate made of synthetic resin in which a back mechanism of the device and a ball passage through which a large number of pachinko balls pass is formed is openably and closably mounted. In addition, an electronic circuit board for controlling the operating states of various electrically operated devices is mounted below the mechanism plate.

[0003]

In such a conventional pachinko machine, when many pachinko balls pass through the ball passage, the pachinko balls collide with the wall surface of the ball passage or generate static electricity due to contact friction. However, the static electricity will be stored in the pachinko ball and mechanical plate. Then, when the voltage of the static electricity that has accumulated becomes high and is discharged to the electronic circuit board, the electronic circuit board receives high-frequency noise and the like, and there is a problem that it malfunctions or is destroyed by the noise.

It is an object of the present invention to provide a pachinko machine in which static electricity accumulated in a pachinko ball or a mechanical plate is not discharged to an electronic circuit board.

[0005]

In order to achieve the above object, in the present invention, a game board mounting frame is fixed to the back side of a front frame which is openably and closably mounted on the front surface of a side frame, and the game board mounting frame is attached. A game board is removably attached to the game board, and a synthetic resin mechanism plate is pivotally attached to one side of the game board mounting frame so that the mechanical board can be opened and closed. In a pachinko machine including a main board box accommodating an electronic circuit board for controlling, the game board mounting frame and the bottom board of the main board box are formed of a conductive member such as an iron plate, and a side surface is formed on the bottom board of the main board box. From the view, an L-shaped contact piece is projected, and an opening is formed at a position corresponding to the contact piece on the mechanism plate to which the main board box is attached, and the contact piece is exposed from the opening to the front side of the mechanism plate. Let it contact the game board mounting frame It is obtained by way.

[0006]

[Function] Static electricity accumulated in the pachinko ball or mechanism board is released to the bottom board of the main board box accommodating the electronic circuit board and the game board mounting frame made of a conductive member. Discharge is prevented.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a rear view of a pachinko machine which is an embodiment of the present invention, FIG. 2 is a perspective view of the pachinko machine with the front frame opened, and FIG. 3 is a perspective view of the same with the game board removed. 1 to 3, the pachinko machine 1 is shown.
Has a side frame 2, and a front frame 3 is attached to the front surface of the side frame 2 in an openable and closable manner. A game board mounting frame 4 is fixed to the back side of the front frame 3, and a game board 5 is detachably mounted on the game board mounting frame 4.

As is well known, the game board mounting frame 4 is usually made of synthetic resin, but in the present invention, it is made of an iron plate as a conductive member. More specifically, the game board mounting frame 4 is integrally formed on the lower part of the upper frame portion 4a and the upper frame portion 4a into which the peripheral edge portion of the game board 5 excluding the lower end is fitted as shown in FIG. Is
And a hollow box-shaped lower frame portion 4b that supports the lower end of the game board 5
It is composed of and. At the periphery of the upper frame portion 4a, a step portion 4c for bending the thin iron plate and abutting the game board 5 is formed. Further, mounting brackets 4d are mounted on both left and right sides of the upper frame portion 4a, and the gaming board 5 can be removed by rotating the mounting bracket 4d, or the gaming board mounting frame 4 can be fixedly mounted. It can be pressed and held.

As shown in FIG. 2, a synthetic resin prize ball collecting cover 6 is detachably attached to the back surface of the game board 5 so as to cover the central portion. This winning ball set cover 6
Is for guiding downward a plurality of winning holes mounted on the surface of the game board 5 or a pachinko ball that has won a variable winning device, and on the back surface thereof is an electronic circuit board 7a for performing game control of the pachinko machine such as a big hit. The board box 7 in which is stored is mounted.

A mechanism plate 8 made of synthetic resin is mounted on one side of the game board mounting frame 4 so as to be openable and closable. The mechanism plate 8 has a plate-shaped portion 8a facing the back surface of the game board 5, and a relatively large window hole 9 is formed in substantially the center of the plate-shaped portion 8a. This window hole 9 is slightly smaller than the winning ball collecting cover 6 so that the board box 7 can be projected rearward. In addition, a winning ball collecting passage 10 for collecting winning balls falling from the winning ball collecting cover 6 is formed in a lower portion of the front surface of the plate-shaped portion 8a.

A prize ball tank 11 is provided above the back surface of the plate-shaped portion 8a. Below the prize ball tank 11, a gutter rail 12 as a ball passage for aligning and guiding the prize balls.
And a prize ball payout device 13 is arranged at the lower end of the gutter rail 12. Further, below the prize ball payout device 13, a vertical ball passage 14 for discharging the paid out pachinko ball as a prize ball to a hitting ball supply tray (not shown) in front of the machine is formed. The prize ball payout device 13 has a known structure for paying out a predetermined number of prize balls by rotating a motor, for example.

At the end of the winning ball collecting passage 10, a winning ball discharging processing device 15 is arranged. The winning ball discharge processing device 15 discharges the winning balls collected in the winning ball collecting passage 10 one by one into the discharging passage 19 by the cam member 17 which is reciprocally rotated by the drive of the solenoid 16.

Further, the lower part of the back surface of the mechanism plate 8 is for controlling the operating states of various electric operating devices mounted on the pachinko machine 1, such as the prize ball payout device 13 and the winning ball discharge processing device 15 described above. A main board box 20 accommodating an electronic circuit board 20a is attached. Further, the electronic circuit board 20a housed in the main board box 20 has a ball firing motor 2 mounted on the lower portion of the back surface of the front frame 3
1, and a speaker and a lamp for generating a sound effect for notifying the player when the game state becomes a big hit state and for raising the atmosphere of the game are connected. Further, an electronic circuit board 7a for game control stored in the board box 7
Interconnected with.

As shown in FIG. 4, the main board box 20 is formed in a box shape by a cover 22 made of synthetic resin and a bottom plate 23 made of an iron plate as a conductive member. On one side of the bottom plate 23 of the main board box 20, a contact piece 24 bent in an L shape when viewed from the side is integrally formed.

On the other hand, an opening 25 for exposing the contact piece 24 to the front side of the mechanism plate 8 is formed at a position corresponding to the contact piece 24 at the lower part of the mechanism plate 8 to which the main board box 20 is attached. . Further, a plurality of protrusions 27 having screw holes 26 formed at the center are formed on the back side of the mechanism plate 8.

In the main board box 20, the cover 22 and the bottom plate 23 are combined to form the contact piece 2 of the bottom plate 23.
After 4 is exposed to the opening 25, it is brought into contact with the back side of the mechanism plate 8 and the screw 28 is attached from the screw insertion hole 18 of the cover 22 to the screw hole 26 of the protrusion 27 by butterfly. This state is shown in FIG. Thereby, when the mechanism plate 8 is closed so as to be in close contact with the back surface of the game board 5, the contact piece 24 of the bottom plate 23 of the main board box 20 contacts the lower frame portion 4b of the game board mounting frame 4.

Therefore, the static electricity accumulated in the pachinko ball or the mechanism plate 8 is released to the bottom plate 23 of the main board box 20 or the game board mounting frame 4, and the electronic circuit board 20a housed in the main board box 20. Can be prevented from being discharged.

[0018]

As described above, according to the present invention, the static electricity accumulated in the pachinko ball and the mechanism plate is quickly released by the bottom plate of the main board box and the game board mounting frame, and thus is stored in the main board box. It is possible to provide a pachinko machine that can effectively protect the electronic circuit board from static electricity and that does not adversely affect noise and the like due to discharge.

[Brief description of drawings]

FIG. 1 is a back view of a pachinko machine according to this embodiment.

FIG. 2 is a perspective view of the pachinko machine with a front frame opened.

FIG. 3 is a perspective view showing a state where the game board is removed.

FIG. 4 is a perspective view of a main part showing a main board box removed from a mechanism plate.

FIG. 5 is a sectional view of an essential part showing a mounting portion of a main board box.

[Explanation of symbols]

 1 Pachinko machine 2 Side frame 3 Front frame 4 Game board mounting frame 5 Game board 8 Mechanism board 20 Main board box 20a Electronic circuit board 23 Bottom board 24 Contact piece 25 Opening

Claims (1)

[Claims] 1. A game board mounting frame is fixed to the back side of a front frame that is openably and closably mounted on the front surface of a side frame, and the game board is detachably mounted to the game board mounting frame, and one side of the game board mounting frame is attached. A pachinko machine equipped with a main board box that houses a mechanical board made of synthetic resin so that it can be opened and closed, and an electronic circuit board for controlling the operating states of various electrical operating devices is mounted on the lower rear part of the mechanical board. In, the game board mounting frame and the bottom plate of the main board box are formed of a conductive member such as an iron plate, and an L-shaped contact piece is projected from the side surface of the bottom board of the main board box, and the main board box is provided. An opening is formed at a position corresponding to the contact piece on the mounting mechanism plate, and the contact piece is exposed from the opening to the front side of the mechanism plate so as to contact the game board mounting frame. Pachinko machine.