JP3120147B2 - Ball launching device for pachinko machines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hit ball launching device for a pachinko game machine, and more particularly, to continuously launch a pachinko ball into a game area of a game board by reciprocatingly swinging a hitting rod. The present invention relates to a hit ball launching device.

[0002]

2. Description of the Related Art A pachinko game machine using a pachinko ball as a game medium is operated by a hitting rod of a hitting ball launching device that is driven and controlled based on a turning operation of an operating handle protruding from a lower right portion of a front surface.
The pachinko ball sent to the lower end of the firing rail is launched into the game area of the game board, and a required pachinko game is played. Here, in the hit ball launching device implemented in the pachinko game machine, as the form of the hitting portion, a "motor driven type" using an electric motor as a drive source and a "solenoid using a rotary solenoid or plunger type solenoid as a drive source" Drive type ".

FIG. 9 and FIG. 10 schematically show a typical configuration of a motor-driven hit ball launching device. In this hitting ball launching device 70, a stepping motor 71 which is driven to rotate in a required direction at a constant speed is used. The ball 72 is reciprocally oscillated in a required angle range to utilize the firing rail 1.
The pachinko ball (not shown) sent to the lower end of 4 is hit. That is, the hitting rod 72 is
The ball is always pivotally supported at a predetermined position on a unit mounting plate 73 fixed to the ball, and is always hit at the tip under the urging action of a coil spring 74 provided between the hitting rod 72 and the unit mounting plate 73. The piece 75 is held in a state where it faces the downstream end of the firing rail 14. Further, a lever 76 is formed integrally with the hitting rod 72, and a pin 77 projects horizontally from the tip of the lever 76. On the other hand, a motor 71 in which a cam 81 engaged with the pin 77 is fixed to a drive shaft 80 on a motor mounting plate 78 formed separately from the unit mounting plate 73, and a control board for controlling the driving of the motor 71 82 and the like, and the unit mounting plate 73 and the motor mounting plate 78 are screwed to each other to form a united ball launching device 70.

When the motor 81 is driven to rotate the cam 81 in the direction of the arrow in FIG. 9 in the hitting ball launching apparatus 70 configured as described above, the outer end surface of the cam 81 contacts the pin 77. As a result, the hitting rod 72 rotates to the left (in the direction of the dashed arrow) in the drawing, and the attitude of the hitting piece 75 is changed to a state in which the hitting piece 75 is separated from the firing rail 14. When the cam 81 rotates to the required angle, the engagement between the cam 81 and the pin 77 is set to be released. At the same time when the engagement between the two 81 and 77 is released, the hitting rod 72 It is instantaneously rotated rightward in the figure (in the direction of the solid arrow) by the tensile elasticity of the coil spring 74, and hits the pachinko ball (not shown) waiting at the downstream end of the firing rail 14 with the hitting piece 75. It has become.
That is, the cam 81 and the pin 77 due to the rotation of the drive shaft 80
The striking rod 72 is swung by utilizing the engagement and disengagement of the pachinko ball, and the pachinko ball is launched by utilizing the urging force of the coil spring 74.

[0005] The hitting ball launching device implemented in the pachinko gaming machine, including the hitting ball launching device 70, is about 10 times a minute.
It requires the ability to fire 0 pachinko balls, and it is not practical if it cannot be used smoothly for at least 3 years without trouble such as breakdown. Therefore, one of the game halls
The required number of durable hits is 100 (pieces) x 60 (minutes) x 12 (hours) x 330 (days) x 3 assuming that the business hours per day are 12 hours and the number of operating days per year is 330.
(Year) = 7.158 million times, which means that the ball must be able to withstand about 100 million hitting operations when used for more than three years.

[0006]

However, in the motor-driven hit ball launching device 70 constructed as described above, the pin 77 projecting from the hitting rod 72 and the cam 81 fixed to the drive shaft 80 are used. Since the rotational force of the motor 71 is transmitted to the hitting rod 72 by the engagement / disengagement action, the impact at the time of contact between the cam 81 and the pin 77 and the friction at the time of engagement occur intermittently. There was a serious problem in terms of durability and stability due to rattling and abrasion. In addition, since the number of components including the cam 81, the pins 77, the motor mounting plate 78, and the like fixed to the drive shaft 80 of the motor is large, there is a disadvantage that the assembling operation takes time and the production cost increases. Further, as shown in FIG. 10, the motor 71 is disposed in a state of protruding outward (rearward) from the motor mounting plate 78,
The outer size of the entire device 70, especially the size in the front-rear direction, is inevitably large, and when the pachinko gaming machine is attached and set at a predetermined position, the motor 71 protrudes greatly backward. Therefore, when transporting multiple pachinko machines,
There is a disadvantage that the pachinko gaming machines cannot be maintained in an aligned state, and there is also a disadvantage that the motor 71 collides with another pachinko gaming machine or the like, causing a failure or breakage.

Further, in the hit ball launching device 70, even if the motor 71 is controlled to stop at the end of the game, the drive shaft 80 stops by rotating by an appropriate central angle due to inertia. The stop position of the cam 81 stuck at the position changes every time the motor 71 stops. That is, the cam 81 may stop at the contact start position with the pin 77 as shown in FIG.
As shown in (b) and FIG. 11 (c), there is a case where it stops at an appropriate rotation angle with respect to the contact start position with the pin 77 shown by the two-dot chain line. Therefore, in the mode in which the hitting rod 72 is rocked by the engagement / disengagement action between the cam 81 and the pin 77, the rotation of the motor 71 by the hitting operation and the rotation of the cam 81 and the pin 77 are started at the next game start by the operation handle. There is an inherent disadvantage that an irregular time lag occurs between the start of swinging of the hitting rod 72 due to the contact. In particular, when the cam 81 is stopped in the state as shown in FIG.
Since the cam 81 comes into contact with the pin 77 after being rotated by about 180 degrees as compared with 1 (a), the hitting rod 72 starts swinging with a delay corresponding to the time required for this rotation and the pachinko ball is released. Become hit. Thus, for example, "rights"
For models that require one or more pachinko balls to enter a predetermined position within a time (5 to 6 seconds) limited by the right generation, such as a type 3 pachinko machine called There was a problem in that it took a long time between turning the handlebar and hitting the pachinko ball to miss out on a chance.

[0008]

SUMMARY OF THE INVENTION The present invention has been newly proposed in order to solve the above-mentioned problems, and is intended to reduce the number of parts in a motor-driven hit ball launching device to reduce the production cost and reduce the size of the device itself. It is an object of the present invention to provide a hit ball launching device for a pachinko game machine that has reduced weight and has a durability and stability that can cope with long-term use without failure by simplifying the structure.

[0009]

[Means for solving the problems] To overcome the above-mentioned problems,
In order to achieve the intended purpose, the present invention reciprocates between a rotation start end and a rotation end by a motor mounted on the back side of a front frame of a pachinko game machine and driven based on a command from a control board. In a motor-driven hit ball firing device that hits and fires a pachinko ball sent to the downstream end of a firing rail with a moving hitting rod, the hitting ball firing device is formed on the back of a front frame of the pachinko gaming machine. Before the mounting plate fixed to the installation portion, the contact surface of the front frame with the installation portion is set to the front.
In Hisage, an opening formed in the front <br/> Symbol mounting plate so as to form a circular shape in the center right side as viewed from the rear side, the motor main body is inserted into the opening, a stator disposed on the front side of the motor Upper and lower ends
Motor and the drive shaft of the base is the motor that is attached to the mounting plate by screws through the integrally formed mounting pieces
Ball that is fixed to the
Is always resting at the start of rotation,
By controlling the motor to the energized state according to these commands,
By rapidly rotating the drive shaft by the required center angle,
The striking rod resting at the rotation start end is biased by the biasing means.
Displace to the end of rotation against the force and snap on the firing rail.
Hit the ball and hit the ball
Free rotation of the drive shaft by cutting off the current to the motor
At the end of rotation
Is returned to the rotation start end under the urging action of the urging means.
The front frame is formed with an opening allowing passage of the motor body, and an engagement recess is formed at a predetermined position of the mounting portion. On the front surface of the motor, an engaging pin is projected at a predetermined position, and the engaging pin of the mounting plate is aligned with the engaging recess of the mounting portion, whereby the motor inserted into the opening of the mounting plate. After positioning the main body in the state of protruding into the opening of the installation section,
By fixing the mounting plate to the installation portion, the hit ball launching device is mounted on the rear side of the front frame.

[0010]

The motor as a drive source is attached to the front frame with the main body protruding into the opening of the front frame, and directs the drive shaft to the rear of the pachinko game machine. The hitting rod is directly connected to and fixed to the drive shaft of the motor, and is always located at the rotation start end by a predetermined urging means. When a pulse-shaped current based on a firing pulse in the control board is applied to the motor, the drive shaft rapidly rotates by a required center angle within a predetermined energizing time, so that the hitting rod starts rotating. To the end of rotation and hits the pachinko ball sent to the lower end of the firing rail. Further, when the energizing time elapses after the completion of the hit of the pachinko ball, the energization to the motor is cut off, the drive shaft enters a free rotation state, and the hitting rod that has been energized by the energizing means has a non-energizing time. To the original rotation start end. That is, the hitting rod reciprocates between the rotation start end and the rotation end in each firing cycle by continuously applying a pulse-wave current to the motor, and the pachinko ball sent to the firing rail is used. Continuously hit. Also,
Since the motor and the hitting rod are directly connected, no time lag occurs between the start of rotation of the motor and the start of swinging of the hitting rod.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Next, a preferred embodiment of a hit ball launching device for a pachinko game machine according to the present invention will be described with reference to the accompanying drawings. Pachinko gaming machines that use pachinko balls as game media include “fever type”
In addition to the first-class pachinko machines, also referred to as "Hikoki-type", and the third-type pachinko machines, also referred to as "rights", it is a kind of winning combination gaming machine. There is an arrangement ball machine and the like, and the hit ball launching apparatus of the present embodiment can be suitably implemented in all of these pachinko gaming machines.

As shown in FIG. 4, the hitting ball launching apparatus A of this embodiment is installed in an installation section 12 formed on the lower left portion of the back of the front frame 10 of the pachinko machine P, and is shown in FIGS. As shown in FIG. 5, a substantially rectangular mounting plate 20 which functions as a mounting base for each component and is fixed to the mounting portion 12 with screws or the like, and a motor 21 as a driving source fixed to the mounting plate 20 , And basically comprises a striking rod 22 and the like which reciprocates and swings by the motor 21. As the front frame 10, a wooden front frame formed by molding a plywood of a required thickness into a predetermined size and shape, and a synthetic resin front frame formed integrally with the whole are practically used. In the example, a wooden front frame standardized to a thickness of 19 mm is illustrated.

The mounting plate 20 is provided on the mounting portion 12 of the front frame 10.
As shown in FIG. 1, a circular opening 24 is formed on the right side of the center when viewed from the rear surface 20b side, and the motor 21 The main body 25 can be inserted therethrough. The motor 21 has mounting pieces 27 integrally formed at the upper and lower ends of a stator 26 disposed on the front side thereof.
0, the main body 25 is inserted into the opening 24 from the side of the rear surface 20b, and a screw 28 is screwed between the abutting mounting piece 27 and the mounting plate 20 to be securely attached to the mounting plate 20. . That is, the motor 21 attached to the mounting plate 20
Is approximately の of the main body 25 as shown in FIGS.
The degree projects from the opening 24 to the front surface 20a side,
The drive shaft 29 is directed toward the rear surface 20b.

As shown in FIGS. 2 and 3, the hitting rod 22 has a base portion 30 having a circular flange shape and a tip portion 31 provided with a hitting piece 32 at a substantially middle portion in the longitudinal direction. It is formed in a refraction state offset from each other in the front-back direction by an amount. Then, the tip of the drive shaft 29 is inserted into the through hole 30 b formed in the base 30, and the nut 33 is tightened, so that the hitting rod 22 is disposed in a state directly connected to the motor 21. Therefore, the hitting rod 22 formed in the bent state as described above is directly connected to the drive shaft 29 of the motor 21 projecting rearward from the rear surface 20b of the mounting plate 20 by a predetermined amount, so that the tip 31 of the hitting rod 22 is formed. Is the mounting plate 2
0, and the ball 32 is located on an extension of the lower end of the firing rail 14 attached to the front side of the front frame 10.

As shown in FIG. 1, a stopper 36 provided with a cushioning member 37 such as rubber at its upper portion has a long hole 36a formed in a screw 35 screwed to the left central portion of the rear surface 20b of the mounting plate 20. The pivoting start end of the hitting rod 22 is positioned so as to be capable of adjusting the movement in the vertical direction through the interposition. Further, a stopper 39 provided with a buffer member 40 on the left side is disposed on the screw 38 screwed to the upper right side of the rear surface 20b so as to be able to adjust the movement in the left and right direction through its long hole 39a. The rotation end of the rod 22 is positioned. That is, the striking rod 22 swings back and forth between the stoppers 36 and 39 while the motor 21 is energized, and strikes the pachinko balls B sent to the lower end of the firing rail 14 one by one. The striking rod 22 is supported by a support shaft 41 erected on a support piece 30a formed integrally with the base 30.
And a supporting shaft 42 erected at a required position of the mounting plate 20, and is urged to always rotate to the rotation start end side by the tensile elasticity of a coil spring 43 as urging means provided over the supporting shaft 42. Thus, when the motor 21 is not energized (the drive shaft 29 is in a free rotation state), the posture is held at the rest position in contact with the stopper 36.

A resin circuit case 44 is attached to the lower portion of the rear surface 20b of the mounting plate 20.
The control board 45 is set horizontally, and a cover 46 for integrally covering the control board 45 and the motor 21 is attached. The control board 45 includes, as shown in FIG.
(Not shown), which performs comprehensive input / output control of a volume 47, a micro switch 48, a touch switch 49, a ball feed solenoid 50, and the like. The electrical components 47, 48, 49, and 50 are connected to the substrate 45 via the. Rotating adjusters 52 and 53 for adjusting the ball jump of the motor 21 and the touch sensitivity of the touch switch 49 are provided so as to protrude from the cover 46.

By the way, in the hit ball launching apparatus A of this embodiment,
As described above, the hitting rod 22 that reciprocates and swings within the central angle range of about 60 degrees between the stoppers 36 and 39 is driven by the driving shaft 29.
Therefore, the motor 21 for driving the hitting rod 22 is drive-controlled to repeatedly rotate within this angle range. That is, as for the motor 21, an inductor-type synchronous motor characterized by being able to start and stop instantaneously is adopted, and furthermore, a dedicated motor is used so that the striking rod 22 can reciprocate and swing suitably within an angle range of 60 degrees. The design is implemented. Specifically, as shown in FIGS. 5 and 6, a total of six magnetic pole teeth 56 are arranged at equal intervals (60) on the same circumference inside the winding 55 arranged circumferentially inside the main body 25. (In each degree), the stator 26 is configured, and each having the characteristics of the S-pole and the N-pole.
The permanent magnets 57 are arranged alternately on the outer periphery of the drive shaft 29 and arranged and fixed at equal intervals (every 60 degrees) to form the rotor 58.

In the motor 21 configured as described above, FIG.
As shown in FIG. 5, a required current is applied to the winding 55 to excite the respective magnetic pole teeth 56 of the stator 26 to have the same polarity as the permanent magnet 57 adjacent to the magnetic pole teeth 56, so that each magnetic pole A repulsive force is generated between the teeth 56 and the permanent magnet 57, and the rotor 58 rotates in the direction of the arrow.
When the rotor 58 rotates, an attractive force is generated between the adjacent magnetic pole teeth 56 having different polarities and each of the permanent magnets 57, and the rotor 58 rotates by a central angle of about 60 degrees. Will stop later. That is, since the magnetic pole teeth 56 and the permanent magnets 57 are arranged at regular intervals every 60 degrees, the rotor 58 is provided with the respective magnetic pole teeth 56 and the permanent magnets 5.
7 due to the repulsive force and suction force generated between
Starting and stopping can be performed instantaneously at a rotation angle of degrees.
Further, since a plurality of the magnetic pole teeth 56 and the permanent magnets 57 are provided, a repulsive force and an attractive force are generated between the magnetic pole teeth 56 and the permanent magnets 57, and the rising torque at the start of rotation is increased. be able to. Since the magnetic pole of the rotor 58 is the permanent magnet 57, the torque is proportional to the voltage applied to the stator 26. Accordingly, the magnitude of the striking force of the striking rod 22 against the pachinko ball B outputs the displacement of the volume 47 (following the handle operation of the player) disposed on the operation handle to the voltage adjustment correction circuit 54, The voltage is appropriately adjusted by the circuit 54 receiving the signal.

In the hit ball launching apparatus A of the embodiment, FIG.
The drive / stop control of the motor 21 is performed based on a pulse-shaped current generated every firing cycle T as shown in FIG.
That is, in FIG. 7, the touch detection condition of the touch switch 49 and the detection condition of the volume 47 by the rotation operation in the hit ball operation unit are determined by the CPU 5 in the control board 45.
9, a firing pulse is output from a pulse generator based on the crystal oscillation circuit 60 of the substrate 45, and the firing pulse is transmitted to the motor 21 via the stop circuit 61 and the constant voltage switching circuit 62. A pulse-shaped current for each T is added. Note that the firing cycle T
Is set based on the rule that the number of firing operations is set to 100 times or less per minute. In this firing cycle T, the energizing time T ₁ and the non-energizing time T ₂ for the motor 21 are appropriately set. .

Accordingly, the striking rod 22 urged by the coil spring 43 to rotate toward the rotation start end and held in the rest position in contact with the stopper 36 causes the pulse-shaped current to flow to the motor 21. When the power supply is started, the pachinko ball B sent on the firing rail 14 is constantly rotated and displaced instantaneously from the rotation start end to the rotation end simultaneously with the rapid rotation of the drive shaft 29, so that the pachinko ball B is always fixed. Hit at the timing. Then, after the required power supply time T ₁ has elapsed and the power supply has been interrupted after the hit of the pachinko ball B by the hit ball 32 has been completed, the drive shaft 29 of the motor 21 enters the free rotation state,
The hitting rod 2 receiving the tensile elasticity of the coil spring 43
2 is set so as to be able to return to the original rotation start end while the non-energization time T ₂ elapses.

The hitting ball launching apparatus A according to the present embodiment having the above-described configuration is based on the premise that the opening 16 is formed in the installation portion 12 of the front frame 10, and is formed at a predetermined position of the installation portion 12. By aligning the engagement recess 63 with the engagement pin 64 projecting from a predetermined position on the front surface 20 a of the mounting plate 20, the main body 25 of the motor 21 is positioned in a state of being inserted into the opening 16. That is, as shown in FIG. 2 and FIG. 3, since a part of the motor 21 protrudes into the opening 16, the projecting amount of the hit ball launching device A to the rear side of the front frame 10 is (The dimension between the rear surface of the main body 25 and the tip of the drive shaft 29).

[0022]

Next, the operation of the hit ball launching device of the pachinko game machine according to the present embodiment configured as described above will be described. The hitting ball launching device A of the embodiment includes an engaging recess 63 formed in the installation portion 12 of the front frame 10 and a front surface 20 of the mounting plate 20.
In a state where the engagement pin 64 projecting from the position a is aligned and positioned, the installation pin 12 is installed in a predetermined direction.

Before the firing operation of the operation handle (not shown), the drive shaft 29 is in a free rotation state because the power supply to the motor 21 is stopped, and the striking rod 22 directly connected to the drive shaft 29 is a coil spring. It is urged toward the rotation start end by the pulling elastic force of 43, and is held at the rest position in contact with the stopper 36.

When a required firing operation is performed on the operation handle, a touch detection condition of the touch switch 49 and a detection condition of the volume 47 by the rotation operation are input to the CPU 59 of the control board 45, so that A firing pulse is output from a pulse generator based on the crystal oscillation circuit 60 of the substrate 45, and a pulse-shaped current is applied to the motor 21 via the stop circuit 61 and the constant voltage switching circuit 62.

The motor 21 to which the pulse-wave-like current output from the control board 45 is added, has its magnetic pole teeth 56 and permanent magnets 57 excited by the stator 26 based on the first wave current. , A repulsive force and a suction force are generated between the drive shaft 29 and the drive shaft 29.
The ball 22 directly connected to is instantaneously rotated and displaced at the same time.
The drive shaft 29 is about while the energization time T ₁ is passed 6
Rotating by a central angle of 0 degrees, the hitting ball 32 hits the pachinko ball B sent to the downstream end of the firing rail 14, and the hitting rod 22 contacts the buffer member 40 of the stopper 39. When the energization is cut off after the elapse of the energization time T _1, the drive shaft 29 enters a free rotation state, and the striking rod 22 urged to rotate toward the rotation start end by the tensile elastic force of the coil spring 43. is rotated back to abut the original rest position to the stopper 36 during the non-energization time T ₂ has elapsed.

Next, after a lapse of a predetermined non-energizing time T ₂ ,
When the stator 26 is excited, the motor 21 that has received the second wave current in the pulse wave-like current rapidly starts the drive shaft 29 to rotate and instantaneously rotationally displaces the hitting rod 22 again. . Then, while the energizing time T ₁ elapses, the drive shaft 29 rotates by the central angle of about 60 degrees,
2 hits the next pachinko ball B sent to the downstream end of the firing rail 14, and the hitting rod 22 comes into contact with the buffer member 40 of the stopper 39. When the energization is cut off after the elapse of the energization time T _1, the drive shaft 29 is in a freely rotatable state, and the hit ball that has been urged to rotate toward the rotation start end by the tensile elastic force of the coil spring 43. Rod 22
Is returned to the original rest position in contact with the stopper 36 again while the non-energization time T ₂ has elapsed.

Accordingly, the hitting ball launching apparatus A of this embodiment converts the pachinko ball B sent to the launching rail 14 into the firing cycle based on a pulse-shaped current repeated every firing cycle T as shown in FIG. It will be hit at every T time interval. Moreover, since the hitting rod 22 is directly connected to the drive shaft 29, the rotation of the motor 21 and the hitting rod 2
There is an advantage that the start of rocking is simultaneously performed without a time lag, and a shot is fired at a constant timing at the start of a game with the operation handle. Note that the magnitude of the striking force of the striking rod 22 is adjusted by voltage adjustment based on the amount of displacement of the volume 47 due to the turning operation of the operation handle.

[0028]

As described above, according to the hit ball launching apparatus for a pachinko game machine according to the present invention, the hitting rod is directly connected to the drive shaft of the motor, and the motor rotates within the required center angle range. The striking rod is configured to reciprocate and swing, so that rattling due to contact between parts and abrasion due to friction between the motor and the striking rod does not occur, and the ball is used for a long time. It has a very beneficial effect that can withstand the same. And
At the start of the game with the operation handle, the hitting rod starts swinging without a time lag with respect to the start of rotation of the motor, so that the hitting firing tamping can always be constant, which affects the establishment of the game condition on the game board. It is possible to play a suitable game without. In addition, since parts such as pins and cams for connecting the motor and the hitting rod are omitted, noise generated by abutting of these parts is eliminated, and assembling work time associated with a reduction in the number of parts is reduced. There are advantages such as shortening of production cost, reduction of production cost, and reduction in weight and size. Further, since the motor is attached to the installation portion in a state where the motor protrudes into the front frame, when the pachinko game machine is attached and set to the front frame, the amount of projection of the pachinko gaming machine toward the rear is reduced, and the motor is moved rearward. Since the motor does not protrude, breakage of the motor itself can be suitably avoided.

[Brief description of the drawings]

FIG. 1 is a rear view showing a hit ball launching device of a pachinko gaming machine according to an embodiment of the present invention.

FIG. 2 is a plan view showing the hit ball launching apparatus according to the embodiment, partially cut away in a state where it is attached to a pachinko gaming machine.

FIG. 3 is a side view showing a partly broken state of the hitting ball firing device of the embodiment in a state of being attached to a pachinko game machine.

FIG. 4 is a rear view schematically showing a front frame of the pachinko gaming machine to which the hit ball launching device of the embodiment is attached.

FIG. 5 is a vertical sectional side view of a motor implemented in the hit ball firing device of the embodiment.

FIG. 6 is a vertical sectional front view of a motor implemented in the hit ball launching apparatus according to the embodiment.

FIG. 7 is a block diagram schematically showing a control board of the motor.

FIG. 8 is a schematic explanatory diagram of a pulse-shaped current for motor drive control.

FIG. 9 is an exploded perspective view schematically showing an example of a conventional motor-driven hit ball launching device.

FIG. 10 is a side view partially broken away showing a conventional motor-driven hit ball launching device attached to a pachinko gaming machine.

FIG. 11 is an explanatory diagram showing a relationship between a standby position of a pin and a stop position of a cam in a conventional motor-driven hit ball launching device.

[Explanation of symbols]

10 the front frame 14 launch rail 16 opening 20 mounting plate 21 motor 22 ball striking lever 25 body 29 the drive shaft 30 base 43 a coil spring (biasing means) 45 control board B pachinko ball P pachinko machine T firing cycle T ₁ energization time T ₂ De-energization time

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A63F 7/02

Claims (1)

(57) [Claims] 1. A rotation start end and a rotation end by a motor (21) mounted on the back side of a front frame (10) of a pachinko gaming machine (P) and driven based on a command from a control board (45). In a motor-driven hit ball launching device (A) that hits and launches the pachinko ball (B) sent to the downstream end of the firing rail (14) with a hitting rod (22) that reciprocates between The hitting ball launching device (A), the front frame of the pachinko gaming machine (P)
Mounting plate (2) fixed to the installation part (12) formed on the back of (10)
0) and the contact surface between the installation portion (12) of the front frame (10) and the front surface (20).
a), as viewed from the rear (20b) side,
An opening (24) formed in the mounting plate (20) to form a shape
If the motor body (25) is inserted into the opening (24), Mo
The stator (26), which is arranged in front of the
The mounting plate by screws (28) through the form has been attached piece (27)
The motor (21) attached to (20) and its base (30) are
Ball (22) fixed to the drive shaft (29) of the motor (21).
And is always rotated by the required urging means (43).
Rest position at the end and forward by command from the control board (45)
The motor (21) is controlled to be energized, and the drive shaft (29) is
By rotating quickly by the required center angle,
Urging the hitting rod (22) resting on the urging means (43).
Displaced to the end of rotation against the force on the firing rail (14)
Hit the pachinko ball (B) and complete the hit of the pachinko ball (B).
Periodically cut off the current supply to the motor (21)
Free rotation of the shaft (29) and posture displacement at the end of rotation
The striking rod (22), which has been pressed, is urged by the urging means (43).
And a hitting rod (22) for returning to the rotation start end downward, and an installation part (12) of the front frame (10) is provided with an opening (16) through which the motor body (25) can be inserted. And the installation portion
An engaging recess (63) is formed at a predetermined position of (12), and an engaging pin (64) is protrudingly provided at a predetermined position on the front surface (20a) of the mounting plate (20). By aligning the engaging pin (64) of the mounting plate (20) with the engaging concave portion (63) of the installation portion (12), the motor body () is inserted into the opening (24) of the mounting plate (20). 25) the installation part (12)
After positioning in a state where it protrudes into the opening (16), by fixing this mounting plate (20) to the installation part (12),
A hit ball firing device for a pachinko game machine, wherein the hit ball firing device (A) is mounted on the back side of the front frame (10).