JPH0810396A - Ball shooting device for game machine - Google Patents

Abstract

PURPOSE:To impart demagnetizing effect to a ball, and minimize the dispersion in shooting distance by arranging a yoke having magnetic poles opposed to each other, a coil wound on the yoke, and a guide means for guiding the ball between both the magnetic poles, and connecting a capacitor in parallel to the coil. CONSTITUTION:When a current is carried to the base of a transistor 18, the current is carried to a plurality of coils 8a, 9a, and a magnetic field is generated to attract a ball, so that the ball is traveled and shot. When the ball is moved to the center part between both magnetic poles, this is detected by a sensor, and the current carrying to the transistor 18 is interrupted. At this time, voltages by self induction are generated in both the coils 8a, 9a, and after a capacitor 16 is charged thereby, the discharge from the capacitor 16 is carried out. Namely, a resonating action is caused by a parallel circuit between the capacitor 16 and both the coils 8a, 9a. A gradually attenuating magnetic field is caused also between both the magnetic poles. Further, demagnetizing action is imparted to the ball to minimize the dispersion in shooting distance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ball launching device for a game machine such as a pachinko machine.

[0002]

2. Description of the Related Art A ball launching device for a game machine using magnetic force is shown in FIG.
Was configured as shown in.

That is, a yoke 1 in which different magnetic poles 4 and 5 face each other at a predetermined interval, coils 2 and 3 wound around the yoke 1, and a guide means for guiding a ball 6 between the magnetic poles 4 and 5 ( (Not shown).

When the coils 2 and 3 are energized, the magnetic poles 4 are
A magnetic force is generated between the spheres 5, the rear sphere 6 is strongly attracted by this magnetic force, and when the sphere 6 is attracted and moved to between the magnetic poles 4 and 5, the power supply to the coils 2 and 3 is cut off. It is designed to fire forward due to inertia.

[0005]

A problem in the above-mentioned conventional example is that the sphere 6 is magnetized by being emitted by receiving a magnetic force, and as a result, the firing distance of the sphere 6 varies. there were.

That is, when the sphere 6 which is once magnetized at the time of launch is collected and is guided again between the magnetic poles 4 and 5, it is itself magnetized, so that the magnetic force received between the magnetic poles 4 and 5 is the same as the previous time. However, as a result, the firing distance varies.

The individual magnetized spheres 6 are not guided in the state of being guided between the magnetic poles 4 and 5, that is, the rotating state. Therefore, the firing distance of the sphere 6 also varies from this point. It happened.

[0008] Therefore, the present invention has an object to reduce the variation in the firing distance of the ball.

[0009]

In order to achieve this object, the present invention comprises a coil and a capacitor connected in parallel.

[0010]

With the above construction, when the coil is de-energized, the voltage generated by the self-induction of the coil causes charging / discharging of the capacitor, that is, parallel resonance, which causes an AC pulsed magnetic force in the magnetic pole. Since the magnetic force causes the sphere to be demagnetized, as a result, variations in the firing distance of the sphere are reduced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
Will be explained. In FIGS. 1 and 2, 7 is a ball such as a pachinko ball made of a magnetic material. Reference numerals 8 and 9 denote first and second electromagnets for generating a magnetic force, which have first and second coils 8a and 9a, respectively, and a current supplied to the first and second coils 8a and 9a. The value is controlled via the controller 10. Reference numeral 11 is a yoke made of a magnetic material and forms the magnetic paths of the first and second electromagnets 8 and 9.

The opposing magnetic poles 8b of the first and second electromagnets 8 and 9 are different from the S pole and 9b is different from the N pole. Numeral 12 is a rail made of non-magnetic material, and the magnetic poles 8b and 9 facing each other are provided so as to hit the ball 7 in a smoothly defined direction.
It is provided between b. Reference numeral 13 is a handle operated by the player, and the angle sensor 14 mechanically interlocked transmits the rotation angle to the controller 10. If the rotation angle is large, the current supplied to the first and second coils 8a and 9a is increased. It is designed to increase the value.

That is, when the player (operator) rotates the angle sensor 14 through the handle 13 in such a configuration by a predetermined angle, a signal corresponding to the rotation angle is transmitted to the controller 10 and the signal is transmitted. Based on this, the value of the current supplied from the controller 10 to the first and second coils 8a and 9a is determined. Due to this energization, a magnetic force is generated in the first and second electromagnets 8 and 9, which causes a magnetic flux to flow from the magnetic pole 9b of the second electromagnet 9 to the magnetic pole 8b of the first electromagnet 8, which causes (b) in FIG. Magnetic field is generated. This makes rail 12
Magnetic force acts on the spheres 7 supplied one by one as shown in FIG. 1 (c). As a result, the sphere 7 moves the rail 12 onto the magnetic poles 8b and 9b.
When the ball 7 is attracted toward the center of the magnetic poles 8b and 9b, the sensor 15 detects it and the controller 10 cuts off the energization of the first and second coils 8a and 9a. Then, the ball 7 inertially travels on the rail 12 to the left in FIG. 1A, and is launched. 1 (d) shows the ball speed, and FIG. 1 (e) shows the current supplied to the first and second coils 8a and 9a.

FIG. 3 shows an energizing circuit for the first and second coils 8a and 9a. The first and second coils 8a and 9a are
A series connection body of the capacitor 16 and the resistor 17 is connected in parallel. A transistor 18 as a switching means is interposed on the ground side of the parallel connection body, and a diode 19 is interposed between the transistor 18 and the parallel connection body with the anode side thereof facing the parallel connection body. ing.

In this structure, when a current flows from the controller 10 to the base of the transistor 18 as shown in FIG.
The transistor 18 turns on.

Then, the current B shown in FIG. 4 flows through the first and second coils 8a and 9a, which causes the ball 7 to be fired.

When the sphere 7 moves to the center between the magnetic poles 8b and 9b, it is detected by the sensor 15, and the current to the transistor 18 is cut off as indicated by A in FIG.

Then, a voltage due to self-induction is generated in the first and second coils 8a and 9a, whereby the capacitor 1
6 is charged, and then the capacitor 16 is discharged, that is, resonance occurs in the parallel circuit of the capacitor 16 and the first and second coils 8a and 9a. As a result, between the magnetic poles 8b and 9b, a pulse-like wave similar to the current shown by B in FIG. 4 is alternately generated, and a magnetic field that gradually attenuates is generated.
It can be changed by the resistor 17). At this time, the sphere 7 moves to the left in FIG. 1 from the center between the magnetic poles 8b and 9b, so that the sphere 7 moving to the left moves while receiving this pulsed magnetic field.

As a result, the sphere 7 which is magnetized between the magnetic poles 8b and 9b when moving from the right side to the center of FIG. 1 is demagnetized when moving from the center to the left.

Therefore, the sphere 7 collected after the launch and set again on the rail 12 as shown in FIG. 1 is hardly magnetized, and therefore the variation in the launch distance of the sphere 7 is small. .

The diode 19 shown in FIG. 3 prevents the reverse current from flowing from the transistor 18 and stably generates resonance between the first and second coils 8a and 9a and the capacitor 16. It is provided.

If the damping shown in FIG. 4B is too fast, the effect on demagnetization is small. Conversely, if the damping is too slow,
When moving from the center of the magnetic poles 8b and 9b to the left, it becomes a brake, which causes a problem that the firing distance becomes short.

In the present invention, in order to secure both the demagnetization effect and the firing distance, the decay time is set to about 6 msec, and the AC waveform within this decay time is set to about 3 to 6 cycles. In this embodiment, the first and second coils 8a and 9a
Is connected to the positive power supply side and the transistor 18 is connected to the ground side, but conversely, the transistor 18 may be connected to the positive power supply side and the first and second coils 8a and 9a are connected to the ground side.

[0024]

As described above, according to the present invention, the capacitor is connected in parallel to the coil. With the above configuration, the capacitor is charged / discharged by the voltage generated by the self-induction of the coil when the coil is de-energized. , That is, parallel resonance occurs, which causes an AC pulsed magnetic force in the magnetic pole,
This magnetic force causes the sphere to be demagnetized, and as a result, variations in the firing distance of the sphere are reduced.

[Brief description of drawings]

1A is a front sectional view of an embodiment of the present invention, FIG. 1B is its waveform diagram, FIG. 1C is its waveform diagram, FIG. 1D is its waveform diagram, and FIG.

FIG. 2 is a side sectional view thereof.

[Figure 3] Circuit diagram

[Figure 4] Waveform diagram

FIG. 5 is a sectional view of a conventional example.

[Explanation of symbols]

 7 Ball 8a 1st coil 8b Magnetic pole 9a 2nd coil 9b Magnetic pole 12 Rail 16 Capacitor 17 Resistor 18 Transistor 19 Diode

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigeki Kitamura 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (2)

[Claims] 1. A yoke having different magnetic poles facing each other at a predetermined interval, a coil wound around the yoke, and a guide means for guiding a sphere between the different magnetic poles, and a capacitor is connected in parallel to the coil. Ball launcher for game machines. 2. The ball launching device for a gaming machine according to claim 1, wherein a switching element is interposed in a parallel connection body of the coil and the capacitor, and a diode is interposed between the switching element and the parallel connection body.