JPS62284678A - Motor drive circuit for pinball of pinball machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention (Field of Industrial Application) The present invention provides a pachinko machine in which a pinball motor can be driven only while a player's hand is touching the handle. This invention relates to a ball motor drive circuit.

(Prior Art) The pinball motor drive circuit of a pachinko machine incorporates a touch switch circuit that drives the motor only when the player is touching the handle. The relay in the main circuit was activated by the output signal to turn the motor on and off, which had the disadvantage that the circuit device became large and required a large installation space.

Also, as is well known, our country has 5 Q It z area and 60 H.
The maximum number of balls per minute is regulated, so pachinko machine manufacturers have to change the gear head of the motor depending on the shipping destination.
There has been a need for a motor drive circuit for pinballs in pachinko machines that can solve these conventional problems all at once (problems to be solved by the invention) The present invention solves these conventional problems, This circuit was completed for the purpose of creating a pinball motor drive circuit for pachinko machines that can be used in both 50 II z and 60 Hz regions without using large relays.

(Means for Solving the Problems) The present invention provides an inverter circuit that has a main circuit that converts alternating current into direct current and then converts it back into alternating current in response to a signal from the oscillation circuit. It is characterized in that a touch detection circuit whose output changes depending on contact/non-contact is connected, and the transmission of signals from the oscillation circuit to the main circuit is stopped when there is no contact.

(Example) Next, the present invention will be explained in detail based on the illustrated circuit diagram.

The circuit of this example consists of seven parts (A) to (G) surrounded by one-dot chain lines, where (A) is a power supply circuit and (B) is a power supply circuit.
is the main circuit, (C) is the oscillation circuit, (D) is the frequency dividing circuit, (E
) is a drive circuit, (F) is a touch detection circuit, and (G) is a malfunction prevention circuit.

The power supply circuit (A) includes a rectifier bridge +11, which converts the 24V AC input from the input terminals (2) and (2) into DC, and also outputs +24V to the terminal (3) indicated by the white triangle.
This is a circuit that outputs a DC voltage of V to a terminal (4) indicated by a black triangle as a DC voltage of +IIV. The main circuit (B) is +24V above the center ground wire (5) and -24V below.
In addition to having two rectifier circuits (6) and (7) on the side,
Two photocouplers (8) and (9) are shown on the right side.
) and transistors (1 (1), (11)) and a switch circuit as an example, and as described later, when the photocouplers (8) and (9) are alternately turned on and off, the transistors, The gates of (11) are opened alternately, and the output terminals (12) and (12) are supplied with +24V DC and -24V.
By outputting direct current alternately, it performs the function of inversely converting direct current into alternating current.

The oscillation circuit (C) is a circuit that generates a pulse signal with a frequency such as 1.5KHz or 3K)Iz, preferably a multiple of 600. The frequency is divided into 1 and then input to the drive circuit (E). Since the pulse input from the frequency dividing circuit CD) has a duty ratio of 1:1, the drive circuit (E) is equipped with a gate circuit (14) that converts the duty ratio to 1:3, and the pulse is at H level. When the pulse is at the L level, the photocoupler (8) is turned on, and when the pulse is at the L level, the photocoupler (9) is turned on. Here, photocouplers (8) and (9) are used for signal transmission between the drive circuit <E) and the main circuit (E3) in order to electrically isolate both circuits and improve reliability. be.

In the present invention, a touch detection circuit (F) is connected to the oscillation circuit (C) as described above. Touch detection circuit (F
) is equipped with a flip-flop (15) that sets the output to L level when a human body touches the touch switch provided on the handle for the bullet, and maintains the output at H level when the human body is not in contact with it. In the circuit, the output signal is connected to the seventh node terminal (1) of the element (13) of the frequency divider circuit ([)).
6). As a result, while the touch switch is not touched by the player, a reset signal is always applied to the element (13), the output signal from the oscillation circuit (C) does not reach the drive circuit (E), and therefore the main circuit ( B) cannot operate, so no power is supplied to the output terminals (12), (12). In this embodiment, a method is employed in which a reset signal is input to the reset terminal (16) of the element (13), but various modifications such as stopping the oscillation itself are also possible. Note that (G) is a malfunction prevention circuit that inputs a reset signal to the reset terminal (16) of the element (13) for about 0.5 seconds after the power is turned on to prevent troubles when the power is turned on. Drive circuit (E)
Shown at the bottom is a grounding circuit (17) to prevent the state from remaining at H level when a reset signal is input to the reset terminal (16).
It is.

(Function) In the device configured as described above, the pulse signal generated by the oscillation circuit (C) is divided by the frequency dividing circuit (D) and then inputted to the drive circuit (E), and this pulse is sent to the photocoupler (8). ), (9) to the main circuit (B), the gates of the transistors 0I11, (11") are alternately opened, and the +2 obtained by the rectifier circuit (6), (η
Output terminals (12) and (1) alternately output 4V and -24V DC.
2) to drive the ball motor.

However, if the player does not touch the touch switch connected to the terminal (18) of the touch detection circuit (,F),
Since the reset signal is always input to the reset terminal (16) of the element (13) of the frequency divider circuit (D), the oscillation circuit (C)
The signal transmission from the main circuit (B) to the main circuit (B) is stopped, and the ball motor is not driven. In this way, in the present invention, the output of the touch detection circuit (F) is used to transmit signals from the oscillation circuit (C) of the inverter circuit to the main circuit (B). There is no need to provide a circuit, and the circuit can be made smaller. In addition, in the present invention, since an inverter circuit is used that converts alternating current into direct current and then inversely converts it back to alternating current, alternating current of any frequency can be output to the output terminal (12), and when shipped to the 5011z area. Also 60 tl
There is no need to change the motor gear head etc. even when shipping to region Z.

(Effects of the Invention) As is clear from the above description, the present invention does not require the use of relays, so the circuit can be made smaller. Since the present invention can be used as is without any modification, the present invention will greatly contribute to the industry as a pinball motor drive circuit for pachinko machines that solves the problems of conventional machines.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing an embodiment of the present invention. (B): ball circuit, (C): oscillation circuit, (F): touch detection circuit.

Claims (1)

[Claims] The oscillation circuit (C) of an inverter circuit is equipped with a main circuit (B) that converts alternating current into direct current and then converts it back to alternating current in response to a signal from the oscillation circuit (C). Connect the touch detection circuit (F) whose output changes,
A pinball motor drive circuit for a pachinko machine, characterized in that transmission of signals from an oscillation circuit (C) to a main circuit (B) is stopped during non-contact.