JPS63132679A - Electromotive 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 [Field of Industrial Application] The present invention relates to an electric pachinko machine that automatically shoots game balls by electrically driving a motor or the like.

[Prior Art] Conventionally, as shown in FIG. 8, in this type of electric pachinko machine, a firing rail 2a is attached to the front of a game board 1a, and a ball hammer 3a is attached to the back of a front frame 4a. . Then, one end of the coil spring 5a is connected to the ball hammer 3a to bias it in the firing direction, and a handle 6 is attached to the front surface of the front frame 4a.
The other end of the coil spring 5a is connected via a wire 8a to a take-up pulley 7a which is rotated by the rotation of the handle 6a, and by rotating the handle 6a, the tension of the coil spring 5a is adjusted and the motor 9a is driven. By engaging the cam 10a fixed to the output shaft of the motor 9a with the engagement pin lla of the ball hammer 3a, the ball mallet 3a is rotated to eject the game ball at the shooting position of the shooting rail 2a. It has become.

[Problems to be Solved by the Invention] Incidentally, in the assembly process of such a conventional electric pachinko machine, after the firing rail 2a and the ball hammer 3a are individually attached, the tip of the ball hammer 3a and the ball hammer 3a are connected to each other. It is necessary to perform centering work so that the center of the game ball placed at the firing position is correctly aligned. However, since the front frame 4a is made of wood, this centering work requires a highly sophisticated adjustment technique, as even the slightest tightening of screws, for example, may vary slightly depending on the degree of tightening. This has hindered speeding up of the work because it has to be carried out with the parts assembled together.

Also, this is true not only for this type of electric pachinko machine but also for manual pachinko machines, but all of them have three batting mallets.
The tip of the ball a is made to face the shooting position of the shooting rail 2a from below to shoot the game ball. For this reason, if the rubber pad 12a that restricts the rotation range of the ball hammer 3a is deformed or worn out, the tip of the ball hammer 3a will come into contact with the firing rail 2a and must be replaced immediately. Furthermore, since the fulcrum 13a of the ball hammer 3a is located below the launch rail 2a, the game ball is ejected in a state where it is struck against the launch rail 2d, thereby causing the game ball to spin in a direction opposite to the flight direction. If the brake is applied, the ball cannot be expected to fly smoothly due to the braking action, and a large amount of torque is required in order to obtain a sufficient flight distance. Particularly in the case of electric pachinko machines, this inevitably necessitates the use of a large motor, which inevitably results in a large launching device that occupies a large installation space, or increases shipping costs due to bulky shipping. There were various problems such as high cost.

The present invention has been devised in view of the above circumstances.

[Means for Solving the Problems] According to the present invention, a firing rail and a ball hammer are disposed on the front surface of a set plate formed in the shape of a box frame. The ball hitting mallet is provided so that the ball hitting part faces the firing position of the firing rail from above, and the position is adjusted so that the tip of the ball hitting part correctly corresponds to the firing position. Further, in the internal space of the set plate, an electric drive source is disposed to rotate the batting mallet and bounce the game ball at the firing position, thereby forming a firing device unit.

Then, the firing device unit is attached to the back surface of the front frame so as to receive the lower side of the game board.

We are taking technical measures.

[By using the action launcher unit, you can adjust the launch position of the launch rail and the ball hitting part of the batting mallet (centering work)
can be made unnecessary. Also.

Since the fulcrum of the batting mallet is located above the launch rail and the game ball at the launch position is launched from above, the batting mallet will not collide with the launch rail, and the game ball will not move along the launch rail. The ball will fly better because the ball will be sent forward. Further, since the electric drive source for rotating the batting mallet is housed in the internal space of the set plate, the back structure can be easily touched.

[Example] The present invention will be explained below based on the illustrated embodiments.

Figure 1 is a front view of an electric pachinko machine to which the present invention is applied, Figure 2 is a front view showing the glass frame and front plate opened, and Figure 3 is a front view of an electric pachinko machine to which the present invention is applied.
The figure is a rear view, and FIG. 4 is a rear perspective view with the game board removed. A pachinko machine 1 has a front frame 3 attached to the front of a machine frame 2 so as to be openable and closable.

A glass frame 4 is attached to the front of the front frame 3 so as to be openable and closable.

A front plate 6 with an upper spherical plate 5 attached to the front surface is attached below the glass frame 4 so as to be openable and closable. A mouth-shaped upper frame 7 made of synthetic resin is attached to the back side of the front frame 3. Upper frame 7
A launcher unit 8 is fixed to the lower part of the . and,
A game board 9 is removably attached to the inner part surrounded by the upper frame 7 and the firing device unit 8.

As shown in FIG. 5, the launcher unit 8 includes a set 10 formed by bending a metal plate into a box frame shape with an opening at the rear. The set plate 10 has a function of accurately positioning the lower side of the game board 9 by receiving it with a shoulder part If on the upper side when the game board 9 is installed.The set plate 10 has a rail mounting base 12 on the front side of the set plate 10. A firing rail 13 made of stainless steel is fixed onto the rail mounting base 12 with screws 14.

Also, above the firing position of the firing rail 13]5,
A through hole 17 is formed in the set plate 10, and a drive motor 19 is fixed to an internal space I8 of the set plate 10 located at the rear surface of the through hole 17. The drive motor 19 is small enough to fit completely into the internal space of the set plate 10.

A thin one is chosen. This drive motor 19 is.

For example, it is a traveling wave type ultrasonic motor, and as shown in FIG. 7, it is roughly composed of a stator 20 and a rotor 21.

The stator 20 is made by bonding a piezoelectric body 23 made of piezoelectric ceramic such as PZT to an elastic body 22 made of copper alloy or the like which causes distortion (deformation) when an external force is applied and returns to its original state when the force is removed. It consists of The rotor 21 is constructed by adhering a slider 25 to an aluminum alloy ring 24. The stator 20 and the rotor 21 are pressed into contact with each other by a spring 16. The slider 25 is the stator 20
This is to drive the rotor 21 with high efficiency by obtaining a stable frictional force and coefficient of friction when the rotor 21 comes into pressurized contact with the rotor 21, and is made of engineering plastic. Then, an output shaft 26 provided on the rotor 21 is projected from the through hole 17 to the front surface of the set plate 10, and a ball hammer 27 is attached to the output shaft 26.
The upper edge of is fixed. The ball-striking part 28 of the ball-striking mallet 27 faces the shooting position 15 of the shooting rail 13 from above, and is pre-swaged between the shooting position 15 and the ball-striking mallet 27 so that it can enter the center of the shooting position 15 and properly shoot the game ball. Adjust the position (centering) and install.

The drive motor 19 applies a high frequency voltage to the stator 20 to generate traveling wave ultrasonic vibrations, and extracts the vibration energy as a rotational motion of the rotor 2I that is in pressure contact with the stator 20. The output shaft 26 rotates due to the amplitude rotation of the rotor 21, and the batting mallet 27 is moved to the firing position [1
5 game balls are fired.

The rebound force of the game ball is adjusted by operating the ball-hitting operation section 37 mounted on the front surface of the front frame 3 to change the voltage and frequency.

Further, an automatic game ball supply device 29 is provided on the back side of the front plate 6, and each game ball from the upper ball tray 5 is supplied one by one to the firing position 115 for each firing operation of the ball hammer 27.

It is fired onto the game board 9. Further, on the back side of the pachinko machine 1, on one side of the upper frame 7, there is a plate corresponding to the back side of the game board 9 of the six mechanism board 30, on which the mechanism board 30 is attached to cover the back side of the game board 9 so as to be openable and closable. A prize taste tank 31 is fixed to the upper part of the shaped part. A gutter rail 33 is formed below the prize taste tank 31 for arranging the prize tastes and guiding them to the prize ball release mechanism 32. A prize ball releasing machine 34 is formed below the prize ball releasing mechanism 32. The left shoulder portion 11 of the set plate 10 is provided with an outlet portion 35 for guiding the prize flavor released into the prize ball release @34 to the upper ball tray 5.

Further, a lid plate 36 is removably provided at the rear opening of the set plate 10.

According to the present invention, as described above, the first firing rail I3, the batting mallet 27, and the driving motor 19 of the batting mallet 27 are mounted on the set plate 1.
0 to form a firing device unit 8, and this firing device unit 8 is attached to the back surface of the front frame 3 as a lower frame for receiving the lower side of the game board 9. By using such a launcher unit 8, the launch rail I, which was conventionally done when assembling a pachinko machine, can be
There is no need for troublesome centering work between the hammer 3 and the ball hammer 27. Also.

Since the fulcrum of the batting mallet 27 is provided above the firing position @15, the game ball is ejected along the firing rail 13 and is given a spin in the direction of travel, making it a good ball. You'll be able to get a good ball flight, and you'll be able to get enough distance with a small torque. This effect can be obtained in the same way even when an induction motor or a rotary solenoid is used as the drive source for the ball hammer 27, as in a conventional electric pachinko machine, for example.

In addition, in the above-mentioned configuration, in particular, the fulcrum of the batting mallet 27 can be set at the firing position @
By providing the motor 15 above the hammer 15, the torque required to bounce the game balls is small, so that a small and thin ultrasonic motor 19 can be used as a drive source for the ball hammer 27. By using this ultrasonic motor 19, the motor 19 can be housed in the internal space of the set plate 1O, so unlike the conventional case, the motor protrudes from the lower part of the back surface of the front frame 3 and becomes bulky. This eliminates this problem, makes it look very clean, and makes it extremely easy to install accessory parts such as a ball ring starter and an out ball detector.

[Effects of the Invention] As described above, according to the present invention, the main parts can be integrated into one firing device unit 8 by assembling one firing rail 13° ball hammer 27 and drive motor 19 to the set plate 10.
This launching device unit 8 is attached to the back surface of the front frame 3 so as to receive the lower side of the game Px9. Therefore, just by installing one launcher unit 8, the launcher rail 13. Assembling the batting mallet 27 and the driving motor 19 can be completed, and the troublesome work of centering the first firing rail 13 and the batting mallet 27 can be omitted, making assembly of the electric pachinko machine extremely easy. It is simple and can be done quickly and easily.

In addition, by providing the fulcrum of the ball hammer 27 above the firing position 15, a good ball flight can be obtained, and the torque required to bounce the game ball can be small. The lower part of the back of the pachinko machine can be used neatly, making it possible to reduce weight and transportation costs.

[Brief explanation of the drawing]

Fig. 1 is a front view of an electric pachinko machine to which the present invention is applied, Fig. 2 is a front view showing the same with the glass frame and front plate opened, and Fig. 3 is a back view of the electric pachinko machine of Fig. 1. , 4th
The figure is a rear perspective view with the game board removed, Figure 5 is a perspective view of the launcher unit, Figure 6 is a sectional view of the main part showing the launcher unit installed, and Figure 7 is the ultrasonic motor. FIG. 8 is a perspective view illustrating the internal structure partially in section, and FIG. 8 is a schematic perspective view illustrating the main parts of a conventional electric pachinko machine. 3... Front frame, 8... Launcher unit, 9...
... Game board, 10... Set board, 13... Launch rail, 15... Launch position, 18... Internal space, 19... Ultrasonic motor, 26...・Output shaft,
27... Batting mallet, 28... Batting club.

Claims (3)

[Claims] (1) A box-frame-shaped set plate is provided, and a firing rail and a batting mallet are arranged on the front surface of the set plate, and the batting mallet allows the ball to face the firing position of the firing rail from above, and also allows the ball to be hit. The position is adjusted so that the tip of the part correctly corresponds to the firing position, and the internal space of the set plate is provided with an electric drive source that rotates the batting mallet to bounce the game ball at the firing position. An electric pachinko machine characterized in that a firing device unit is constituted by this, and the firing device unit configured in this way is attached to the back surface of a front frame so as to receive the lower side of a game board. (2) A firing device unit in an electric pachinko machine according to claim 1, wherein the electric drive source is an ultrasonic motor. (3) The electric pachinko machine according to claim 1, wherein the electric drive source is an ultrasonic motor, and a ball hammer is attached to its output shaft.