JP4418563B2 - 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 pachinko ball by rotating a lead screw with a pulse motor.
[0002]
[Prior art]
Conventionally, there are various types of ball payout devices in pachinko machines, and the lead screw is rotated by a pulse motor and the number of pachinko balls is discharged by controlling the rotation speed. Things are one of them.
[0003]
By the way, this type of lead screw type ball dispensing device generally moves a pachinko ball along a lead screw provided on a rotating shaft of a pulse motor, and therefore its axial length does not have to be large. It was something that I did not get. For this reason, there was a problem of occupying a large installation space on the back surface of the pachinko gaming machine. In particular, if a ball counting sensor is provided downstream of the lead screw to detect a pachinko ball that has fallen from the lead screw, the additional space is required.
[0004]
[Problems to be solved by the invention]
The present invention solves the above-described problems, provides a lead screw type ball payout device that can be made compact, and is always easily installed in a narrow space on the back of a pachinko gaming machine.
[0005]
[Means for Solving the Problems]
For this purpose, the ball payout device in the pachinko gaming machine of the present invention vertically supports a lead screw that is rotationally driven by a pulse motor , and moves the pachinko ball in a line in a line to a symmetrical position on both sides of the lead screw. A ball that is formed vertically so that the pachinko ball in the ball moving rod is supported by the thread of the lead screw and descends as the lead screw rotates, so that the pachinko ball is continuously paid out. A payout device, wherein the upstream pachinko ball in the ball moving rod is supported by the tip edge of the screw thread simultaneously when the downstream pachinko ball in the ball moving rod loses support by the trailing edge of the screw thread. As described above, by making the substantial winding length of the screw thread less than one turn, one pachinko ball is always supported by the screw thread for one ball moving rod. It is characterized in.
Moreover, the present invention is characterized in that, in the above-mentioned ball dispensing device, the thread pitch of the lead screw is set to 11.5 mm to 12.5 mm.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a back view of the pachinko gaming machine. 1 is a prize ball tank, 2 is a ball dispensing device to which a pachinko ball flowing down from the prize ball tank with its own weight and passing through a rectifier 3 is supplied. 2 is an enlarged longitudinal sectional view of the ball dispensing device, FIG. 3 is a sectional view taken along line AA, and FIG. 4 is a sectional view taken along line BB. In the ball dispensing device 2, a pulse motor 5 is fixed to a plastic case 4 such that a rotation shaft 6 thereof is vertically downward, and a lead screw 7 is fixed to the rotation shaft 6. Ball moving rods 8a and 8b are vertically formed on both sides along the lead screw 7, and 9a and 9b pass pachinko balls arranged in a row by passing through the rectifying rod 3, the ball moving rods 8a and 8b. It is a sphere introduction cylinder formed in a bent shape in the case 4 for guiding to the above. In addition, the lower part of the ball | bowl moving rods 8a and 8b is opened so that it may continue with the payout channel | path 10. FIG. Reference numeral 17 denotes a bearing portion formed to pivotally support the lower end portion of the lead screw 7, and reference numeral 18 denotes an attachment piece formed on the case 4. Therefore, when the lead screw 7 is rotationally driven in the direction of the arrow by the pulse motor 5, the pachinko balls b1, b2,... Constrained by the thread 11 of the lead screw move in the ball moving rods 8a, 8b to move out. 10 is continuously paid out.
[0007]
Therefore, as shown in FIG. 3, the lead screw 7 is formed so that the winding length of the thread 11 is one turn or less. That is, the illustrated thread 11 has a winding angle α of about 340 degrees starting at the leading edge 11a and ending at the trailing edge 11b. By setting the thread 11 to such a winding length, when the downstream pachinko sphere b1 in the ball moving rod loses support by the rear end edge 11b of the thread, the upstream pachinko sphere b2 Is supported by at least the leading edge 11a. The inner diameter of the ball moving rods 8a and 8b is formed to be about 1 mm larger than the diameter of the pachinko ball so that sufficient play is obtained so as not to hinder the movement (free fall) of the pachinko ball. Therefore, in FIG. 3, the leading edge 11a and the trailing edge 11b overlap in the circles of the pachinko balls b1 and b2, but due to this play, the downstream pachinko ball b1 is supported by the trailing edge 11b. In this state, the upstream pachinko ball b2 is supported by the tip edge 11a.
[0008]
The pitch p of the thread 11 is set to 11.5 mm to 12.5 mm, which is about 1 mm larger than the diameter (10.5 mm to 11.5 mm) of the pachinko sphere. In this way, the length L of the lead screw 7 is minimized. Note that the outer peripheral edge of the thread 11 is formed in a concavo-convex shape so as to prevent slipping when the lead screw is manually rotated when ball clogging occurs.
[0009]
Reference numeral 12 denotes a ball counting sensor comprising a projector 13 and a light receiver 14. The ball counting sensor has a U-shaped mounting frame 15 fixed near the lower end of the case 4 so that the projector 13 and the light receiver 14 face each other. The pachinko ball immediately after the mounting and the optical axis 16 straddling both the ball moving rods 8a and 8b and the restraint from the thread of the lead screw 7 is released interrupts the optical axis 16 so that the pachinko ball is electrically It is detected and counted as a signal. In addition, by detecting the pachinko sphere flowing down the both-sphere moving rods with one sphere counting sensor 12 in this way, there is an advantage that the manufacturing cost is reduced as compared with the case where a plurality of sensors are provided. Further, by detecting the pachinko ball immediately after the restraint from the screw thread of the lead screw 7 is detected, there is a possibility that the pachinko ball that alternately flows down both the ball moving rods 8a and 8b overlaps to block the optical axis 16. In addition, detection errors are prevented, and the possibility of extra pachinko balls being discharged due to inertial rotation of the pulse motor due to detection delay is also eliminated.
[0010]
Further, in the ball dispensing device configured as described above, the pachinko ball in the ball moving rods 8a and 8b can be restrained by the thread 11 by setting the winding length of the thread 11 of the lead screw 7 to 1 round or less. Since it can be shortened as much as possible, even if the ball counting sensor 12 is provided to detect the pachinko ball immediately after being released from the restraint, the total length H of the ball dispensing device is not increased, and the mounting space can be reduced as compared with the prior art. There will be no occupancy. Moreover, by shortening the winding length of the thread 11 in this way, friction with the pachinko ball is reduced and the load of the pulse motor 5 is reduced.
[0011]
In this embodiment, an example in which the lead screw 7 is provided vertically has been described. However, the present invention can also be implemented in a ball dispensing device in which the lead screw 7 is provided in a horizontal or inclined manner.
[0012]
【The invention's effect】
In this way, the ball payout device for the pachinko gaming machine according to the present invention has a winding length of the lead screw thread of one turn or less, and the downstream pachinko ball in the ball moving rod loses support by the screw thread. Since the winding length of the thread is set so that the upstream pachinko ball is supported by at least the tip edge of the thread, it can be configured in a small size and does not occupy a large space for mounting, and the space on the back of the pachinko machine There is also an effect that makes it easy to install.
[Brief description of the drawings]
FIG. 1 is a back view of a pachinko gaming machine according to the present invention.
FIG. 2 is a longitudinal sectional view showing an embodiment of a ball dispensing device according to the present invention.
3 is a cross-sectional view taken along line AA in FIG.
4 is a cross-sectional view taken along line BB in FIG.
[Explanation of symbols]
2 Ball dispenser 5 Pulse motor 7 Lead screw 8a, 8b Ball moving rod 9a, 9b Ball introduction tube 10 Discharge passage 11 Screw thread 11a Screw thread leading edge 11b Screw thread trailing edge 12 Ball counting sensor b1, b2. Pachinko ball α Thread winding angle

Claims (2)

A lead screw that is driven to rotate by a pulse motor is vertically supported, and a ball moving rod that allows the pachinko balls to flow down in a line in a line is formed vertically at symmetrical positions on both sides of the lead screw. A ball dispensing device in which the pachinko balls in the ball moving cage are supported by the screw thread of the lead screw and lowered so that the pachinko balls are continuously dispensed. The substantial winding length of the thread so that when the pachinko ball loses support by the trailing edge of the thread, the upstream pachinko ball in the ball moving cage is supported by the leading edge of the thread. The ball payout device in the pachinko gaming machine is characterized in that one pachinko ball is always supported by the screw thread for one ball moving rod by making it less than one round .   The ball payout device in the pachinko gaming machine according to claim 1, wherein a pitch of the thread of the lead screw is set to 11.5 mm to 12.5 mm.

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