JP5467412B2 - Rotating body for ball delivery of pachinko machine - Google Patents

Description

The present invention relates to a ball dispensing rotating body used in a ball dispensing device of a pachinko machine for dispensing balls fed from a ball passage cage one by one as prize balls .

A mechanism board is provided on the back surface of the pachinko machine, and a ball tank for storing prize balls is disposed on the upper part of the mechanism board. A ball passageway is connected to the lower side of the ball tank, and the ball passageway is connected to a ball guideway provided with a ball dispensing device that counts and dispenses balls. As a conventional ball dispensing device, for example, a device using a screw as shown in Patent Document 1 is known. In this compound has a structure for feeding one by one ball holding the balls flowing down the guide passage by the winding portion of the coil spring.

  Patent Document 2 discloses a pachinko ball lifting device using a spiral coil. However, since these coils have a cantilever structure, the pitch is not stable, and the output shaft and the coil spring are not coaxial with each other, so that there is a problem that the stability of ball feeding is lacking. In addition, there is a problem that the structure is complicated and cannot be manufactured at low cost, and the durability is poor.

Japanese Patent Laid-Open No. 6-170051 (FIG. 1) Japanese Patent Laid-Open No. 10-52553 (FIG. 1)

  In view of the above-described conventional problems, an object of the present invention is to provide a ball dispensing rotary body for a gaming machine that can be manufactured at low cost, has excellent durability, and can stably dispense a ball. .

In order to solve the above-mentioned problems, a ball dispensing rotary body for a pachinko machine according to the present invention comprises a coil spring capable of receiving a ball between the winding lines and a rotating shaft inserted into the coil spring. As a rotating body, the rotating shaft is composed of a base end side shaft portion attached to the motor shaft and a distal end side shaft portion connected thereto, and these shaft portions are engaged by a snap fit mechanism. was on top, by mounting in a compressed state between the coil spring and the proximal side shaft portion formed flange portion and the distal side shaft flange portion formed in part, the said proximal side shaft portion The distal end side shaft portion is biased in the pulling direction.

  In addition, it is desirable that the spacing between the winding lines is 8 mm or more and less than 22 mm, and the difference ΔR between the outer radius Rs of the coil spring and the outer radius Rj of the rotating shaft is Rb / 4 with respect to the radius Rb of the ball. It is desirable to make the ball taken in between the winding lines project from the outer periphery of the coil spring as <ΔR <Rb.

In the invention according to claim 1, since the rotating body for ball conveyance is made of a metal coil spring and a resin rotating shaft, it is possible to provide a rotating body that is inexpensive and excellent in durability. . In addition, since the coil spring is made by winding a thin metal wire, it is possible to keep a small distance from the adjacent winding portion, and it is possible to pay out balls at high speed by reducing the ball feeding interval.
The invention which concerns on Claim 2 can receive a ball | bowl between the winding line parts, and can send it out to a horizontal direction.
In the invention according to the third aspect , since the depth of the ball entering between the coiled wire portions of the coil spring is optimally taken, the force for pushing the ball laterally can be effectively applied to the ball.

It is a front view of the rotary body which concerns on this invention. It is front sectional drawing of the ball dispensing apparatus using a rotary body. It is side surface sectional drawing of a ball dispensing apparatus. It is a plane sectional view of a ball dispensing device. It is sectional drawing which shows the internal structure of a housing | casing.

Hereinafter, embodiments of the present invention will be described.
FIG. 1 is a view showing a rotating body according to the present invention, wherein 7 is a rotating shaft made of synthetic resin, and 8 is a coil spring made of a metal such as steel or aluminum.

  The rotating shaft 7 includes a proximal end side shaft portion 71 attached to a rotating shaft of a motor (not shown) and a distal end side shaft portion 72 connected thereto. The distal end side shaft portion 72 has a snap fit portion 73 at one end, and the snap fit portion 73 bites a small diameter portion 74 formed in the proximal end side shaft portion 71 so that both are integrally coupled. The rotating shaft 7 is inserted into the coil spring 8. The coil spring 8 is a compression coil spring, and one end of the coil spring 8 is hooked on the flange portion 75 of the proximal end side shaft portion 71, and the other end is pressed by the flange portion 76 of the distal end side shaft portion 72. By the hooking on the collar portion 75, it is possible to prevent the coil spring 8 from rotating separately from the rotating shaft 7 due to the resistance of the ball. Further, the elastic force of the coil spring 8 urges the flanges 75 and 76 to expand so that a pulling force acts on the proximal end side shaft portion 71 and the distal end side shaft portion 72. The end side shaft portion 71, the front end side shaft portion 72, and the coil spring 8 are firmly assembled as an integral rotating body 5 having a screw structure.

  Since the interval between the coiled wire portions of the coil spring 8 is 8 mm or more and less than 22 mm, one ball can enter between the coiled wire portions. Since the ball diameter is usually 11 mm, two balls cannot enter between the winding lines. Here, since the difference ΔR (= Rs−Rj) between the outer radius Rs of the coil spring 8 and the outer radius Rj of the rotating shaft 7 is Rb / 4 <ΔR <Rb with respect to the radius Rb of the ball, the rotating shaft 7 The ball can be held and sent out by the outer peripheral surface 57 of the coil and the winding portion of the coil spring 8. When ΔR is equal to or less than Rb / 4, the coil spring 8 tends to sink under the ball, so that the ball cannot be effectively pressed in the lateral direction. When ΔR is equal to or greater than Rb, the coil spring 8 exerts a force on the ball to press the ball from above, so that the effect of preventing the clogging by the coil spring 8 lifting the ball upward and stirring the ball lump is weakened. Because.

Below, the ball paying-out apparatus in which the above-mentioned rotary body was used is demonstrated based on FIGS. 2-4.
The ball dispensing device 4 includes a rotating body 5 that is rotated by a motor M and a housing 6 that supports the rotating body 5 in a horizontal state.

  The housing 6 has a ball entrance 61 for taking in the balls from the ball passage cage 3 in the upper portion and a ball introduction passage 68 communicating with the ball entrance 61, and a ball dispensing passage 63 having a ball counting sensor 62 in the lower portion. 6 is formed close to one side surface (FIG. 3). In FIG. 2, reference numeral 31 denotes a chevron-shaped protrusion, and both sides thereof are formed in a ball guide groove 32. Reference numeral 64 denotes a ball removal passage for removing balls in the pachinko machine for maintenance or the like, and is not used during the game. When the ball is removed, the motor M is rotated in the reverse direction.

  The ball entrance 61 has both a width and a height of more than two balls and less than three balls, and prevents clogging by two balls. The ball introduction path 68 has a square or rectangular cross-sectional shape, and its width and height (or length) is the same as that of the ball entrance 61 to prevent clogging with more than 2 balls and less than 3 balls. is there. A rotating body 5 is interposed between the ball dispensing passage 63 and the ball removal passage 64. The rotating body 5 has a proximal end connected to the motor shaft M1 and a distal end supported by a bearing 9.

  As described above, since the interval between the flange portions 75 and 76 is constant and the coil spring is suspended therebetween, the total length of the coil spring is regulated to be constant. Since the pulling force of the coil spring 8 acts only between the flange portions 75 and 76, no thrust force is applied to the motor shaft M1 or the bearing 9. Therefore, since the load of the coil spring 8 is not applied to these, the rotating shaft 7 can be rotated smoothly and durability of a ball dispensing apparatus can be improved.

  In addition, ball placing shelves 65 are provided on both the left and right sides of the rotating shaft 7 between the ball dispensing passage 63 and the ball removing passage 64, and balls taken from the ball entrance 61 fall on the shelf 65. And temporarily held. A concave wall surface 66 is formed in the upper part of the ball dispensing passage 63, and the conveyed ball is made to collide with the concave wall surface 66 and fall downward (FIG. 5).

  In the configuration as described above, the balls flow down the ball passageway 3 in an unordered state such as two steps and two rows, flow into the housing 6 from the ball entrance 61, and the ball introduction path. Passing through 63, the coil spring 8 enters between the winding lines. The balls that have entered fall on the left and right ball mounts 65 of the rotary shaft 7 and are conveyed in the direction of the ball dispensing passage 63 by the helical coil spring 8 (FIG. 2). Even if a large number of balls are placed on the rotating body 5, the balls that are riding on the rotating coil spring 8 are pushed up and stirred, so that the balls are not jammed in the ball introduction path 68.

Since the balls on the ball mounts 65 on the left and right sides of the rotating shaft 7 are wound in a spiral manner, the balls are transported in the lateral direction with the position shifted, so that they collide with the concave wall surface 66 with a time shift. Then, the balls fall alternately from the left and right ball mounts 65 to the ball dispensing passage 63. Since fallen ball is paid out at different timings one by one ball, count sensor 62 accurately counts the number of balls that have passed through the rotation of the rotating body 5 is stopped by dispensing ball ends reaches the predetermined number .

7 Rotating shaft, 8 Coil spring, 71 Base end side shaft portion, 72 Tip end side shaft portion, 73 Snap fit, 74 Small diameter portion

Claims (3)

A rotating body comprising a coil spring capable of receiving a ball between the winding portions and a rotating shaft inserted into the coil spring, the rotating shaft being connected to a motor shaft; The distal end side shaft portion connected to the shaft portion is engaged with the shaft portion by a snap-fit mechanism, and the coil spring is connected to the flange portion formed on the proximal end side shaft portion and the distal end side shaft. by mounting in a compressed state between the flange portion formed in part, rotating the ball dispensing pachinko, characterized in that the biasing and said and said proximal side shaft portion distal side shaft portion in the tensile direction body. The ball discharger for a pachinko machine according to claim 1, wherein the interval between the winding lines is 8 mm or more and less than 22 mm. The difference ΔR between the outer radius Rs of the coil spring and the outer radius Rj of the rotating shaft is set to Rb / 4 <ΔR <Rb with respect to the radius Rb of the ball, and the ball taken in between the winding portions protrudes from the outer periphery of the coil spring. 3. A ball discharger for a pachinko machine according to claim 1 or 2 as described above.

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