JPH0667413B2 - Overvoltage prevention device for low-voltage game machines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an overvoltage prevention device in a low-voltage type game machine or the like. More specifically, in a game shop or the like, a high-voltage power supply unit (AC 100V) In game machines equipped with various electric devices and electric parts that are operated at low operating voltage,
The present invention relates to an overvoltage prevention device for preventing overcurrent damage to an electric device and electric parts when a low voltage power supply connection part of the gaming machine is erroneously directly connected to a high voltage power supply part.

[Technical background]

In a pachinko machine, which is an example of a representative example of this kind of gaming machine, as is well known, as various electric devices, a game ball launching device, a winning ball processing device, a winning ball dispensing device, etc., which uses a motor, an electromagnetic solenoid or the like. In addition to the switches and electromagnetic solenoids on the back side of the gaming machine, the variable symbol display device installed on the game board, lamps and switches in various winning devices, motors and solenoids, etc. It is equipped with a control board, etc., and the power source used for the above-mentioned electric devices and electric parts is generally divided into a high voltage power source (AC 100V) and a low voltage power source (AC 24V or less).

Therefore, when classifying pachinko machines by each manufacturer according to the power source used, the high-voltage type, that is, the motor of the launcher typified by the above-mentioned electric devices directly uses the high-voltage power source, and the other electric parts pass through each transformer. There is a type that uses a low voltage power supply and a low voltage type, that is, a type that uses a low voltage power supply through a transformer for all electric devices and electrical parts.
They are handled separately at amusement stores. In addition, at game stores, installation frames (commonly known as "islands") are used in most stores nationwide.
A high-voltage power supply unit and wiring equipment are already installed inside. For each pachinko machine placed on the installation frame for this purpose,
The high-voltage type is directly connected to the high-voltage power supply, while the low-voltage type is branched and connected to a transformer (generally a large transformer) once connected to the high-voltage power supply. It has become so.

In such a situation, the owner or professional employee of the game store is
Although we know the power supply used for each manufacturer's gaming machine, at the time of replacing each of the high-voltage type and low-voltage type gaming machines, that is, at the time of replacement installation for the setting frame base, etc.
The low-voltage game machine may be accidentally directly connected to a high-voltage power supply unit other than the low-voltage power supply unit (the transformer device). As a result, various electric devices and electric parts in the game machine are damaged by being overloaded and the game machine itself becomes unusable, and further, a fire accident may occur.

[Prior art and its problems]

As a measure for preventing accidents due to connection mistakes of the power source used in the gaming machine as described above, in the conventional low voltage type gaming machine, if various transformers etc. capable of supporting a high voltage power source are arranged on the back side, It would be possible to prevent over-electric loss of electric devices and electric parts. However, in such preventive measures,
In the process of manufacturing a gaming machine, it takes a lot of time to install various transformers and their wirings, and the cost is increased by the number of the installed transformers, and there is a problem that it becomes heavy.

For this reason, in a low-voltage game machine in reality, if the above-mentioned power supply connection mistake is caused, all electric devices and electric parts damaged by over-electricity must be replaced with new ones, and in particular such damaged parts If there is a charge for such replacement, it is unavoidable that even the amusement store side will suffer great damage.

[Object of the Invention]

The present invention, a fuse circuit portion configured near the low-voltage power supply connection portion of the power supply control board installed in a low-voltage game machine,
An overvoltage detection device is configured by an overvoltage prevention circuit, and the overvoltage detection device provides an overcurrent prevention device that is detachably connected to the fuse circuit section. The purpose of the present invention is to prevent over-power damage to equipment and fire accidents, and to reduce the cost and weight of game machines.

[Means for solving problems]

The present invention provides a low voltage equipped with a power supply control board to be connected to a low voltage power supply section different from a high voltage power supply section and various electric devices and electric parts connected to each section of the control board in a game shop or the like. In a gaming machine or the like, for example, a set of two zener diodes in which a predetermined zener voltage lower than the voltage of the high-voltage power supply part is set is connected between the power supply part of the power supply base and the connection part of the connector. An overvoltage detection device is configured by an overvoltage prevention circuit, and the overvoltage detection device is detachably connected to a connector or the like installed in a fuse circuit portion formed near the low voltage power supply connection portion of the power supply control board. This is a protection device, and when the low-voltage power supply connection part of the same-type gaming machine is accidentally directly connected to the high-voltage power supply part, the overvoltage detection device and the fuse of the fuse circuit part have a loss due to overloading of the minimum electric component. Only the resulting locking, and makes it possible to use of the gaming machine with a replacement of only those damage electrical components.

〔Example〕

Regarding a preferred embodiment of the overvoltage protection device according to the present invention, in this embodiment, the power supply in the power supply terminal box 1 screwed to the upper right corner of the back mechanism board M of the ordinary pachinko machine P schematically shown in FIG. An example implemented on the control board 2 will be shown. Prior to the description of the overvoltage protection device of this example, the power control board 2 side will be briefly described. In the board 2, the terminal box 1 is housed and screwed, and the energizing circuit having a necessary pattern is formed. On the circuit board 3,
To the low-voltage power supply connection part that should be connected to the low-voltage power supply part (AC24V) inside the amusement store, that is, after the power outlet 4 in FIG.
Fuses F1 to F3, diodes D1 to D5, DC rectifier DS, relay coils RY1 to RY3 and their contacts ry1 to ry3, LED lamp L
1. L2, electrolytic capacitor C, reset switch RS, and a plurality of connectors C1 to C7 related to various electric devices and electric parts in the pachinko machine P are arranged, and each of these circuit parts is an electric circuit shown in FIG. It is connected in place. Reference numeral 5 in FIG. 2 denotes a cover screwed to the terminal box 1 and covers a part of the base plate 2. In addition, R1 and R2 in FIG. 3 indicate resistance.

By the way, for each of the above fuses, the one with the largest rated current value is arranged from the order close to the power outlet 4, and there are three types of F1 for 5A, F2 for 3A and F3 for 1A. Is also detachably attached to form a fuse circuit section. On the other hand, in each connector, as shown in FIG. 3, C1 is connected to the out-of-ball indicator lamp 6 and the prize-winning indicator lamp 7, and C2 is connected to the out-of-ball information switch 8, the out-of-ball detection switch 9, and the winning confirmation switch 10. And the launcher motor 11 is connected, the magnet unauthorized use detection switch 12, the glass window opening detection switch 13, the indicator lamp 14, the winning ball detection switch 15 are individually connected to C3.C4.C5.C6, and C7. A central control board 16 using AC24V is connected to the. The above-mentioned parts are arranged in each part of the pachinko machine as schematically shown in FIG. Also in FIG.
For C8.C9.C10.C11, for information output, that is, the launch information of the launcher. Supply information. It is used as each connector of fraud detection information and is connected to the computer side in the game store as needed.

On the circuit board 3 of the power supply control board 2, a male connector 17 is arranged at the upper right portion in FIG. The connector 17 is for connecting the overvoltage detection tool 21 of this embodiment described later in a freely replaceable manner. In the figure, two sets of two, that is, four connection pins 18 are arranged. Each set of two pins 18 is connected to each fuse F1.F2.F3 in the fuse circuit as shown in FIG. 3, and another set of two pins
Although 18 is a substantially empty connection pin, it is adapted to be used as a stable support for the overvoltage sensing device 21 of this example.

Regarding the overvoltage sensing device 21 of this example connected to the male connector 17 described above, as shown in FIGS. 4 and 5, a wafer 24 (referred to as a female connector) for the male connector 17 is provided on the energization base 22. Zener diode attached
It is an attachment type component that can be detachably connected to the male connector 17 with two types of displacement conversion while being connected with 27 (for example, a constant voltage diode of model name RD39E) to make a small unit as a whole. There is. That is, the current-carrying board 22 is provided with the necessary current-carrying portions 23 at two places, while the female connector 24 is provided with the connection holes 25 and the connection pieces 26 for the respective pins 18 of the male connector 17, and Each end of the connection line 28 of the Zener diode 27 arranged on the current-carrying board 22 is connected to each current-carrying portion 23 of the current-carrying board 22,
The female connector 24 is connected to the connection pieces 26 in the connection holes 25, respectively. However, in such an overvoltage detector 21, the connection hole 25 and the connection piece 26 of the female connector 24, and the Zener diode 27 are two sets, that is, two sets, that is, a total of four sets.
As shown in FIG. 5, two sets of overvoltage protection circuits are arranged by connecting each set.
29 are independently configured. Incidentally, each Zener diode 27 is used with a Zener voltage of min37.0V to max43.0V.

In the overvoltage protection device of this example, the overvoltage detector 21 configured as described above uses the connection holes 25 of each set for the set of connection pins 18 of the male connector 17 in the power supply control board 2. It is possible to insert and connect the female connector 24 to the left or right position with the connector facing upward or downward, and by connecting in any condition or position,
One overvoltage prevention circuit 29 is connected to the fuse circuit section in the circuit board 3 as shown in FIG. Since the device of this example is normally assembled in the circuit board 3, the power supply control board 2 can be treated as a control board with an overvoltage prevention circuit.

Therefore, when the pachinko machine P on which the power supply control board 2 including the device of this example is implemented is erroneously connected to a high-voltage power supply unit different from the low-voltage power supply unit that should be originally used when exchanging old and new equipment in a game shop. That is, the power outlet 4 connected to the circuit board 3 of the power control board 2 by an instant illusion of an employee or the like.
However, when it is directly inserted into the high-voltage power supply AC 100V such as the installation frame even for a moment, as can be seen from FIG. 3, the current is one set from the fuse circuit to the male connector 17. Of the female connector 24 of the present embodiment connected to the connection pin 18 and the connector 17 of the female connector 24 via the connection piece 26 in the one connection hole 25 of the female connector 24.
Distributed to 27. Since the voltage when the diode 27 is energized is higher than the Zener voltage, the diode 27 is instantaneously short-circuited (short-circuited), and synchronously with this, the first fuse of the fuse circuit section, that is, the power outlet 4 is the most Close fuse F1 (5A) is interrupted.

As a result, even if the power outlet 4 is still connected to the high-voltage power supply unit, each circuit unit of the electric circuit is not energized and no voltage is applied at the same time. Therefore, not only the various circuit parts connected to each circuit part, but also the electric devices and electric parts in each part of the pachinko machine connected to each male connector C1 to C7 are not energized, and damage due to overvoltage load is prevented. To be prevented.

The above-mentioned incorrect connection of the power source to be used should be most recognized by the employee, and various electric devices and electric parts are not activated or turned on in the pachinko machine, which is immediately known. Therefore, as a countermeasure after such erroneous connection, the damaged fuse in the power control board 2 is temporarily removed after the power outlet 4 is removed from the high-voltage power supply section.
While replacing the old and new F1 (5A), the overvoltage sensing tool 21 is once removed from the male connector 17, the position or orientation is changed, and the plug is connected again. As a result, another set of overvoltage prevention circuits 29 is newly connected to the fuse circuit section in the power supply control board 2 by using the other set of Zener diodes 27 on the undamaged side in the device of this example, and thereafter, the same operation as described above is performed. You can

However, the replacement of the damaged fuse F1 and the overvoltage detector 21 can be performed quickly and easily directly to the power control board 2 installed in the pachinko machine while the pachinko machine is still installed on the installation frame of the shop. . In particular, the overvoltage detection tool 21 used in the device of this example has a configuration in which the male connector 17 in the power supply control board 2 can be exchanged in two ways and can be detachably connected at each position. Since one can be used twice, the cost of one of the sensing device 21 itself can be substantially halved.

[Advantageous effects of the invention]

As can be understood from the above description of the embodiments, the overvoltage protection device of the present invention is equipped in the same gaming machine as that which is preferably implemented in a gaming machine of a type that uses a low voltage as compared to a high voltage power supply AC 100V. For a connector installed in a predetermined part of a fuse circuit part that is configured near a low-voltage power supply connection part of a power control board, for example, a connection part of a current-carrying part of a power supply board and a connector attached to the same board An overvoltage prevention circuit can be configured by connecting an overvoltage detection tool formed by connecting two sets of Zener diodes to each other, and in the implementation state, the low-voltage power supply connection part of the power supply control board is in a game shop. If it is accidentally connected to a high voltage power supply such as, the Zener diode of the overvoltage detection tool will be short-circuited instantly and the fuse circuit of the power control board will be disconnected. It is possible to prevent the subsequent energization, that is, the energization of various electric devices and electric parts connected to each circuit portion of the power supply control board, thereby preventing a load due to the overvoltage.

Therefore, in such a game machine or the like, at the time of incorrect connection to the high-voltage power supply section, the overvoltage detection tool and the damage fuse in the fuse circuit section are stopped only by the over-electric damage of the minimum electric component, and other than this electric component. It is possible to prevent many electric members from being damaged due to overload. In particular, since the damaged electric parts can be made cheaper than other electric members, the damage damage amount can be suppressed to the minimum damage from the viewpoint of the cost of the game machine, and the old and new parts of the damaged electric parts can be replaced by others. The game machine including the undamaged electric member can be put into practice in the same state and performance as before the incorrect connection. The overvoltage protection device of the present invention can be applied not only to gaming machines other than pachinko machines, but also to other electric appliances other than gaming machines that use a lower voltage than a high voltage. In any case, the installation of the transformer for the game machine can be omitted by using the overvoltage prevention device, so that the machine can be inexpensive and the weight can be reduced.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a rear view schematically showing a back mechanism board on the back side of a pachinko machine, and FIG. 2 is a power terminal box and power control board mounted on the back mechanism board. FIG. 3 is an exploded perspective view, FIG. 3 is an electric circuit diagram illustrating an electric circuit in the power supply control board, FIG. 4 is a perspective view showing an overvoltage detector of this example, and FIG. It is explanatory drawing which illustrates a prevention circuit. 2 ... Power control board, 3 ... Circuit board, 4 ... Power outlet, 17 ... Male connector, 18 ... Connection pin, 21 ... Overvoltage detector, 22 ... Power supply board, 23 ... Power supply section, 24 ... Female connector, 25 ...... Connection hole 26 ...... Connection piece, 27 ...... Zener diode 28 ...... Connection wire, 29 ...... Overvoltage protection circuit C1 to C11 ...... Connector, F1 to F3 ...... Fuse

Claims (3)

[Claims] 1. A power supply control board to be connected to a low-voltage power supply section different from a high-voltage power supply section, and various electric devices and electric parts connected to each section of the power supply control board, in a game shop or the like. In a gaming machine or the like, a set of two fuse circuits configured near the low-voltage power supply connection portion of the power supply control board and short-circuited when receiving a voltage from the high-voltage power supply portion In a low-voltage type game machine or the like characterized in that an overvoltage detection circuit is provided with an overvoltage prevention circuit provided with a zener diode, and the overvoltage detection device is detachably connected to the connection portion of the fuse circuit section. Overvoltage protection device. 2. A current-carrying base having a current-carrying part, a connector having a set of two connecting parts provided on the current-carrying base, and a current-carrying part of the current-carrying base and a connecting part of the connector,
The overvoltage prevention device is configured by the overvoltage prevention circuit in which a set of two zener diodes each having a predetermined zener voltage lower than the voltage of the high-voltage power supply unit are connected, and the overvoltage detection device includes the fuse circuit by the connector. In the low voltage type gaming machine or the like according to claim 1, wherein the connector is detachably connected to a connector installed at a portion after the fuse having the maximum rated current value in the section. Overvoltage protection device. 3. A conductive base having two or more conductive parts formed thereon,
Between the connector in which two or more sets of connecting parts, one set of two provided on the energizing base, are arranged, and between the energizing part of the energizing base and the connecting part of each set of the connectors, The overvoltage detection device is configured by two or more independent overvoltage prevention circuits in which two or more sets of zener diodes each having a predetermined zener voltage lower than the voltage are set as one set. The tool is detachably connected to the connector installed at a portion subsequent to the fuse having the maximum rated current value in the fuse circuit section by the above connector so as to be capable of displacement exchange in two or more ways. An overvoltage prevention device for a low-voltage game machine or the like according to claim 1.