JP4262344B2 - Ball payout device in pachinko machines - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ball payout device in a pachinko gaming machine that pays out a predetermined number of pachinko balls to a payout passage by rotating a lead screw.
[0002]
[Prior art]
There have been various forms of ball payout devices in pachinko gaming machines, and there are also devices configured to rotate the lead screw by a pulse motor and control the number of rotations to pay out the desired number of pachinko balls. One of them.
[0003]
By the way, in the ball dispensing device disclosed in Japanese Utility Model Publication No. 63-32581, the thread groove formed in the lead screw gradually expands its lead angle in the direction of travel, so that pachinko balls overlap and fall. This is intended to prevent erroneous detection of the sensor and to accurately detect the number of payouts. However, in the ball dispensing device disclosed in this publication, a sensor is provided in the middle of the dispensing basket and the falling pachinko ball is detected by the sensor. Therefore, a predetermined number of pachinko balls are detected by the sensor. After that, even if a stop command is issued to the pulse motor, the pulse motor further rotates the lead screw due to inertia, so there is a risk that the pachinko ball will be paid out excessively. In particular, in order to be able to pay out a large number of pachinko balls in a short time, there is a possibility that the pachinko balls will be excessively discharged due to such inertia in the case where the ball moving rods are formed in two rows on both sides of one lead screw. .
[0004]
[Problems to be solved by the invention]
The present invention eliminates the above-mentioned drawbacks and forms the ball moving rods in two rows in order to ensure sufficient pachinko ball dispensing capability, but the number of pachinko balls to be dispensed becomes inaccurate due to inertial rotation of the pulse motor. It is an object of the present invention to provide a ball dispensing device that never happens.
[0005]
[Means for Solving the Problems]
For this purpose, the ball payout device in the pachinko gaming machine according to the present invention includes a lead screw formed so that the lead angle of the thread groove for restraining the pachinko ball gradually expands in the traveling direction, and a pulse motor that rotates the lead screw. And two rows of ball moving rods formed on both sides of the lead screw, and a ball counting sensor provided with a projector and a light receiver facing each other so that the optical axis passes over both ball moving rods. It is characterized by that.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. 1 to 3, 1 is a lead screw, and 2 is a pulse motor that rotates the lead screw. The thread groove 1a of the lead screw 1 is formed so that the lead angle α gradually increases in the traveling direction (downward in this case). Incidentally, as shown in an enlarged view in FIG. 4, the lead angle α1 at the upper end is set to about 20 degrees, and the lead angle α2 at the lower end is set to about 40 degrees. The lead screw thread is formed so that the outer diameter d is about 7 mm and smaller than the diameter of the pachinko ball 3 (about 11 mm).
[0007]
Reference numeral 4 denotes a plastic case fixed to the pulse motor 2, and a pair of ball moving rods 5a and 5b are formed in the case so as to sandwich the lead screw from both sides symmetrical positions, the ball moving rods 5a and 5b. The passages 6a and 6b are bent in a crank shape above, and the pachinko balls 3 are lined up from the prize ball tanks (not shown) in a line through the rectifiers and flow down under their own weight. Further, the lower ends 7a and 7b of the pair of ball moving baskets 5a and 5b are opened and communicated with the prize ball paying basket.
[0008]
Reference numeral 8 denotes a ball counting sensor comprising a projector 10 and a light receiver 11. The ball counting sensor faces the light projector 10 and the light receiver 11 on a U-shaped mounting frame 9 fixed near the lower end of the case 4. Attached to. The optical axis 12 is provided outside the lead screw 1 so as to straddle both the ball moving rods 5a and 5b, and at the moment when the pachinko ball 3 is released from the thread groove 1a of the lead screw 1, the optical axis By blocking 12, the pachinko sphere 3 is detected and counted as an electrical signal. Reference numeral 13 denotes a bearing formed horizontally between the lower ends 7a and 7b of the case 4. The small shaft 14 formed at the tip of the lead screw 1 is supported on the bearing to support the lead screw 1. Is stabilizing.
[0009]
The rotation and stop of the pulse motor 2 are controlled by a ball payout control circuit (not shown). By rotating the lead screw 1, the pachinko balls in both ball moving rods 5a and 5b flow down while being restrained by the screw groove 1a, and the lower end 7a. , 7b to be discharged to a prize ball payout basket. Then, the pachinko balls passing through the both ball moving cages 5a and 5b block the optical axis 12, whereby the electric signal obtained from the light receiver 11 is input to the ball dispensing control circuit, and the rotation of the pulse motor 2 is controlled. A predetermined number of pachinko balls can be discharged into the prize ball payout bowl.
[0010]
Since the lead screw 1 is formed so that the lead angle α gradually increases in the traveling direction (downward in this case), the pachinko ball 3 is constrained by the screw groove 1a, and both ball moving rods 5a, 5b While moving downward, the interval is gradually separated, and at the moment when the restriction from the screw groove 1a at the lower end is released, the interval is widest. In addition, since the pachinko spheres flow down alternately on the both ball moving rods 5a and 5b, there is no possibility that the two pachinko spheres overlap to block the optical axis, thereby preventing a detection error. In this embodiment, a ball counting sensor composed of a projector and a light receiver is provided so that its optical axis passes over both ball moving rods outside the lead screw, so that one ball counting sensor moves both balls. There is an advantage that the pachinko ball flowing down the heel can be detected and the manufacturing cost is reduced as compared with the case of providing a plurality of sensors.
[0011]
In this embodiment, the lead screw 1 is provided vertically, but the lead screw 1 may be provided horizontally or in an inclined shape. In this embodiment, the ball counting sensor for detecting the pachinko sphere by detecting the optical axis is provided. However, a proximity sensor, a contact sensor, or the like for detecting the pachinko sphere by proximity of metal or contact may be used. 0012
【The invention's effect】
Thus, the ball payout device of the pachinko gaming machine according to the present invention forms the lead screw so that its lead angle gradually expands in the traveling direction, and forms ball moving rods on both sides of the lead screw, Since the ball counting sensor is provided so that the pachinko balls of each ball moving bowl can be detected, the pachinko balls can be paid out at a sufficiently high speed by the two rows of ball moving bowls, and the detection error due to the overlap of the pachinko balls The possibility of causing extra pachinko balls to be paid out due to inertial rotation of the pulse motor due to detection delay, etc. is eliminated, and there is an effect that the pachinko balls can always be delivered accurately and quickly.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an embodiment of a ball dispensing device according to the present invention.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
3 is a cross-sectional view taken along line BB in FIG.
FIG. 4 is an enlarged side view of a lead screw of the ball dispensing device according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lead screw 1a Thread groove 2 Pulse motor 3 Pachinko ball 5a, 5b Ball moving rod 8 Ball counting sensor 10 Emitter 11 Light receiver 12 Optical axis α Lead angle

Claims (1)

A lead screw formed so that the lead angle of the thread groove for restraining the pachinko ball gradually expands in the direction of travel, a pulse motor for rotating the lead screw, and two rows of balls formed on both sides of the lead screw A ball payout device in a pachinko gaming machine comprising a moving rod and a ball counting sensor in which a light projector and a light receiver are provided facing each other so that the optical axis passes over both ball moving rods .

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