JP2003038796A - Reserve tank for taking measure for static electricity of pachinko ball - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reserve tank for taking a measure for static electricity which has a simple structure and can be manufactured easily, prevent the generation of static electricity in pachinko balls which causes the pachinko balls to be charged and also remove static electricity easily from charged pachinko balls in a pachinko game machine. SOLUTION: Pachinko balls 12 supplied to the reserve tank 14a from a pachinko ball supplying unit 13 of the pachinko game machine 2a are allowed to flow in layers in the reserve tank 14a by means of a guide member 21. Due to this structure, collision and friction between the pachinko balls 72 are prevented and thereby the generation of static electricity in the pachinko balls 72, which causes the pachinko balls 72 to be charged, is suppressed. By forming an upper face of the guide member 21 and the inside surface of the reserve tank 14a of a conductive material to make them static electricity conductive faces, static electricity generated in the pachinko balls 72 can be removed. Static electricity which is still left over after removal by the static electricity conductive faces is removed by a static electricity removing unit 30 formed of a carbon fiber.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention prevents static electricity from being generated in a pachinko ball in a storage tank of a pachinko gaming machine, and prevents static electricity from being easily charged. Storage tank.

[0002]

2. Description of the Related Art In recent years, a pachinko game machine is equipped with a large number of electronic control circuits in order to meet the demand for various changes in game contents. In addition, electronic control of pachinko gaming machines is increasingly being implemented in order to support centralized management and control of a large number of pachinko balls used in a pachinko island stand composed of multiple adjacent pachinko gaming machines. Has been.

In the conventional pachinko gaming machine, as shown in FIG. 6, a hose 12, a replenishing device 13, a storage tank 14, a tank rail 15 and the like are arranged above the back surface of the pachinko gaming machine 2. A large number of electronic control circuits are usually incorporated in a prize ball payout device (not shown) connected to the tank rail 15 or a main board of the pachinko gaming machine 2 arranged in the vicinity thereof.

Next, referring to FIG. 7, the path of the pachinko ball 72 in the upper portion of the back surface of the conventional pachinko gaming machine 2 will be described. A pachinko ball 72 supplied from a main tank (not shown) provided on a pachinko island stand composed of a plurality of adjacent pachinko game machines 2 passes through the hose 12 to reach each pachinko ball, as shown in FIG. It is sent to the supply device 13 of the gaming machine 2. The pachinko ball 72 that has left the replenishing device 13 is supplied to the storage tank 14 that is opened just below the replenishing device 13 and is open upward. The pachinko ball 72 that has left the storage tank 14 is sent to the tank rail 15 that is connected below the storage tank 14.

The passage of the replenishing device 13, the storage tank 14, the tank rail 15 and the like are usually designed for the purpose of reducing the noise generated from the pachinko balls flowing through them and reducing the weight.
It is made of resin. However, the pachinko ball 72 is made of iron, which is a conductor, and the pachinko ball 72 is made of resin.
4, when flowing through the tank rail 15, etc., pachinko balls 72
The friction between these and the resin-made components causes static electricity to be generated in the pachinko ball 72, and the electric charge is charged.

[0006] In general, before the pachinko balls 72 are supplied to each pachinko gaming machine 2, the pachinko balls 72 are polished around the main tank. By the friction, static electricity is generated in the pachinko ball 72, and the electric charge is charged.

Therefore, the pachinko ball 72 sent to the hose 12 of the pachinko gaming machine 2 is usually charged with a certain amount of static electricity. Furthermore, the conventional storage tank 1 shown in FIG.
4, when the pachinko ball 72 is supplied from the replenishing device 13 to the storage tank 14, the pachinko ball 72 moves upward (U in FIG. 7).
Direction) onto the pachinko balls 72 already contained in the storage tank 14, and the pachinko balls 72 collide with each other to cause multiple layers in the storage tank 14 to overlap with each other to cause friction. Also due to the collision and friction between these pachinko balls 72, static electricity is generated in the pachinko balls 72 and electric charges are charged. Therefore, it is considered that the pachinko balls 72 charged with a large amount of electric charge are stacked in multiple layers in the storage tank 14.

And, those charged pachinko balls 72
When the static electricity charged in the pachinko ball 72 occurs when is passing near the electronic control circuit in the pachinko gaming machine 2, the electronic control circuit in the pachinko gaming machine 2 is generated by the high voltage pulse generated at the time of discharging. There is a problem that noise is generated, and as a result, troubles such as malfunction and stop of operation of the electronic control circuit occur.

In order to deal with these problems, various methods for removing the static electricity generated in the pachinko balls and charged have been proposed in the past. For example, JP-A-7-8624
The publication discloses that a conductive device made of a conductive carbon fiber is attached to a part of a supply path of a pachinko ball supplied to each pachinko gaming machine.

Further, in Japanese Unexamined Patent Publication No. 10-165598, a pachinko ball swinging means is provided in a part of the path of a pachinko ball such as a tank rail in a pachinko gaming machine, and when the pachinko ball touches the swinging means, the pachinko ball touches the pachinko ball. It is disclosed that the contact portion of the ball is electrically connected to the ground side.

[0011]

However, in the former example, it is necessary to modify a part of the supply path of the pachinko balls supplied to each pachinko gaming machine in order to mount the conductive device, and in the latter example, the pachinko machine is used. It was necessary to modify some of the gaming machines.

[0012] Moreover, the conventional proposals have been mainly related to a method for removing static electricity generated in a pachinko ball and charged. Therefore, an object of the present invention is to prevent static electricity from being generated on the pachinko balls in the storage tank of the pachinko gaming machine to be charged, and further to easily remove the static electricity charged on the pachinko balls in the storage tank. It is to provide a storage tank for static electricity countermeasures for pachinko balls that has a simple structure and can be easily manufactured.

[0013]

Means for Solving the Problems and Effects of the Invention In order to achieve the above object, in the present invention, a storage tank for static electricity countermeasures in a pachinko gaming machine is provided in the storage tank, and the pachinko ball is The storage tank includes a guide member that guides the fluid in a layered manner in the storage tank, and a static electricity removing mechanism that is provided in the storage tank and removes static electricity charged in the pachinko balls. Then, it is possible to prevent static electricity from being generated in the pachinko balls in the storage tank of the pachinko gaming machine to be charged, and the static electricity of the charged pachinko balls can be easily removed by the static electricity removing mechanism.

By using the guide member, the pachinko balls supplied from the replenishing device to the storage tank of the pachinko gaming machine may be layered. Then, the pachinko balls can flow in layers on the upper surface of the guide plate that constitutes the guide member. By doing so, when the pachinko ball supplied from the pachinko ball replenishing device in the storage tank of the pachinko gaming machine falls downward, it may fall directly onto the pachinko ball already in the storage tank and collide with it. To be prevented. Therefore, since the pachinko balls do not collide with each other in the storage tank by stacking them in layers in the vertical direction and do not rub against each other, the generation of static electricity of the pachinko balls in the storage tank is suppressed.

Next, the static electricity removing mechanism is composed of a static electricity removing device for removing static electricity by contact between the pachinko ball and the conductive element, and an electrostatic conductive surface for removing static electricity by contacting the pachinko ball with the conductive surface. Is preferred. That is,
When the upper surface of the guide plate and the inner side surface of the storage tank in the storage tank are electrostatically conductive surfaces formed of a conductive resin mixed with a metal material or carbon, the upper surface of the guide plate and the inner side surface of the storage tank The static electricity charged on the flowing pachinko ball is first removed.

Further, by the static electricity removing device for eliminating static electricity by contact with the conductive element attached to the guide plate arranged at the lowermost side of the guide member in the storage tank,
The static electricity of the pachinko ball that could not be completely removed on the electrostatic conductive surface is removed. In that case, it is preferable to attach a plurality of the static eliminating devices to the guide plate arranged at the lowermost side of the guide member. Then, the static electricity charged on the pachinko ball is more surely removed by the static electricity removing device.

The static eliminator is formed by a plurality of conductive elements made of a strip-shaped plate made of a flexible carbon fiber, and the conductive elements are grounded via a grounding member. It is advisable to ensure that the pachinko ball contacts the electrically conductive element. Then, the static electricity charged on the pachinko ball is easily guided to the conductive element and finally escaped to the ground through the ground member.
However, since the strip-shaped plate made of carbon fiber, which is the conductive element, is flexible, it does not hinder the flow of pachinko balls in the storage tank.

Further, when the outer shape of the storage tank of the present invention and the mounting flange shape of the storage tank to the pachinko gaming machine are made common to the conventional storage tank, the storage tank of the present invention can be applied to the conventional pachinko gaming machine. It can be used, and even when the pachinko gaming machine is replaced or renewed due to design change, etc., the storage tank of the present invention can be removed from the pachinko gaming machine and used as it is for the pachinko gaming machine after replacement or renewal. . Therefore, the storage tank can be used for a long period of time.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, specific examples as embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a diagram showing a storage tank for pachinko balls against static electricity. FIG. 2 is a perspective view showing a storage tank for pachinko balls against static electricity. FIG. 3 is a diagram showing a cross section taken along line AA of FIG. FIG. 4 is a diagram showing a BB cross section of FIG. 2. FIG. 5 is a view showing a CC cross section of FIG.

With reference to FIGS. 1 to 5, a storage tank for preventing static electricity of a pachinko ball of the present invention will be described. As shown in FIG. 2, the storage tank 14a for preventing static electricity of the pachinko ball 72 according to the present invention is a box-shaped container having vertical vertical surfaces on all four sides and a substantially rectangular bottom surface without an upper lid. The upper ends of the vertical vertical surfaces on the four sides around the storage tank 14a are horizontal when the storage tank 14a is attached to the pachinko gaming machine 2a (see FIG. 1). Also, the bottom surface 16
Is the left side of the storage tank 14a (see FIG.
LH direction) is below the right side (RH direction in FIG. 3) (D in FIG. 3)
Direction). An elongated hole 29 having a width larger than that of the pachinko ball 72 is provided in the front-rear direction (F or R direction in FIG. 2) at the left end of the bottom surface 16, and the lower portion of the elongated hole 29 (D direction in FIG. 3) is connected to the tank rail 15. (Fig. 1
reference). Flange 41, 42 for mounting to the pachinko gaming machine 2a is provided on both left and right ends (RH direction and LH direction in FIG. 2) of the storage tank 14a.

Next, the guide member 21 is mounted in the storage tank 14a as shown in FIG. 2 or FIG. As shown in FIG. 3, the guide member 21 is composed of a first guide plate 23 and a second guide plate 27. The first guide plate 23 and the second guide plate 27 are each formed in a flat plate shape, and the right end (RH direction in FIG. 3) of the first guide plate 23 and the second guide plate 27 in the vertical direction (U in FIG.
Or it is bent so that it overlaps in the D direction).
The width of the first guide plate 23 and the second guide plate 27 in the front-rear direction (F or R direction in FIG. 2) is made equal to the inner surface width of the storage tank 14a (F or R direction in FIG. 2). .

The lengths of the first guide plate 23 and the second guide plate 27 in the left-right direction (RH or LH direction in FIG. 3) are made shorter by 30 to 35 mm than the length of the storage tank 14a. . In this way, the first guide plate 23 and the second guide plate 27 are attached to the storage tank 14a so that the left ends (LH direction in FIG. 3) contact the vertical surface 18 at the left end (LH direction in FIG. 3) of the storage tank 14a. In the case of, the right ends of the first guide plate 23 and the second guide plate 27 (RH direction in FIG. 3)
And the vertical surface 17 at the right end (RH direction in FIG. 3) of the storage tank 14a
There will be a gap of about 30-35 mm between and. Further, the vertical gap between the lower surface of the second guide plate 27 and the bottom surface 16 of the storage tank 14a is set to a size such that the pachinko balls 72 flow in two layers or less.

Further, as shown in FIG. 4, the first guide plate 23
Is located at the front and rear ends (F or R direction in Fig. 4) above (Fig. 4
Has a flange 24 that is bent at a right angle to
The flange 24 is attached by bolts 22 to the vertical surfaces 19 and 20 in the front-rear direction (F or R direction in FIG. 4) of the storage tank 14a. Similarly, the second guide plate 27 is downward (in the F or R direction in FIG. 4) on both front and rear sides thereof (in the D direction in FIG. 4).
Has a flange 28 bent at a right angle to the flange 2
Reference numeral 8 is attached by bolts 26 to vertical surfaces 19 and 20 in the front-rear direction (F or R direction in FIG. 4) of the storage tank 14a. In order to improve the workability of assembling the first guide plate 23 and the second guide plate 27 into the storage tank 14a, the mounting holes 22a and 26a of the storage tank 14a are elongated holes.

The first guide plate 23 is attached so as to be inclined so that its right end (RH direction in FIG. 3) is lower than the left end (LH direction in FIG. 3) (D direction in FIG. 3), and the second guide plate 23 is attached. 27
Is almost parallel to the bottom surface 16 of the storage tank 14a, so that its left end (LH direction in FIG. 3) is right end (RH in FIG. 3).
Direction) and is attached so that it is below (direction D in FIG. 3). Then, the first tank in the storage tank 14a
The pachinko ball 72 flowing on the upper surface of the guide plate 23 flows from the left side (LH direction of FIG. 3) to the right side (RH direction of FIG. 3) and flows between the second guide plate 27 and the bottom surface 16. Flows from the right side (RH direction in FIG. 3) to the left side (LH direction in FIG. 3).

First guide plate 23 and second guide plate 27
Since it has a simple shape in which flange portions are provided at both ends of the flat plate, it can be integrally molded and can be easily manufactured. Alternatively, the first guide plate 23 and the second guide plate 27 may be separately molded in advance and bonded with an adhesive or the like.

The storage tank 14a, the first guide plate 23, and the second guide plate 27 are made of a resin such as polyethylene or ABS. The upper surface of the first guide plate 23, the inner side surfaces of the four vertical surfaces 17, 18, 19, 20 around the storage tank 14a and the upper surface of the bottom surface 16 are coated with, for example, nickel or a conductive resin mixed with carbon. Has been formed. In that case, the ground member 51 is provided on each surface.
And each grounding member 51 is connected to the grounding terminal 52 shown in FIG. Thereby, the first guide plate 2
3 and the vertical surfaces 1 around the storage tank 14a
The inner side surfaces of 7, 18, 19, 20 and the upper surface of the bottom surface 16 serve as an electrostatic conductive surface.

On the lower surface of the second guide plate 27, as shown in FIG. 4, the static eliminator 30 extends over substantially the entire width of the second guide plate 27 in the front-rear direction (F or R direction in FIG. 4). Installed. As shown in FIG. 5, the static electricity removing device 30 is composed of a conductive element mounting rod 32, a conductive element 31, a grounding member 51 and a screw 33.

The conductive element mounting rod 32 is a rod member having a rectangular cross section, and its length is substantially equal to the width of the storage tank 14a in the front-rear direction (F or R direction in FIG. 4). As shown in FIG. 5, a cutout groove 34 having a narrow width is provided in the central portion of the lower surface of the conductive element mounting rod 32, and a plurality of conductive elements 31 are embedded in the cutout groove 34 in a comb shape. It is rare. The conductive element mounting rod 32 is fitted in a recess provided in the lower surface of the second guide plate 27 in advance. An adhesive may be used in the fitting portion to strengthen the connection between the conductive element mounting rod 32 and the second guide plate 27. The conductive element mounting rod 32 is made of, for example, aluminum or iron.

As shown in FIG. 4, the conductive element 31 has a length, a width and a thickness of 20 to 30 mm, 3 to 5 mm, 0.
It is a strip-shaped plate made of a flexible fiber of about 2 to 0.3 mm, and is shaped so that its tip is sharply pointed. The conductive element 31 is fastened to the conductive element mounting rod 32 with a screw 33, and is formed to have a length that contacts the pachinko ball 72 flowing on the bottom surface 16 of the storage tank 14a in the tightened state. The conductive element 31 is made of, for example, carbon fiber.

One end of the grounding member 51 is a conductive element mounting rod 3
2 and the other end is connected to the ground terminal 52. Therefore, the static electricity charged on the pachinko ball 72 is sequentially guided to the conductive element 31, the conductive element mounting rod 32, the grounding member 51, and the grounding terminal 52, and finally escaped to the ground.

Next, the pachinko ball 7 in the storage tank 14a
The second static electricity generation suppressing method and the static electricity removing method will be described. As shown in FIGS. 1 and 2, the replenishing device 13
Pachinko balls 72 supplied from the storage tank 14a
Are first sent to the upper surface of the first guide plate 23. Since the first guide plate 23 is inclined so that its right side (RH direction in FIG. 1) is downward as described above, the pachinko ball 72 is layered on the upper surface of the first guide plate 23 and laterally ( Of FIG.
In the F or R direction), the particles are dispersed into two or more rows and flow to the right (RH direction in FIG. 1). In such a state, the pachinko ball 72 dropped from the supply device 13 onto the first guide plate 23 of the storage tank 14a does not directly collide with the pachinko ball 72 already in the storage tank 14a from above.
Therefore, the collision and friction between the pachinko balls 72 are extremely small, and the generation of static electricity due to the collision and friction of the pachinko balls 72 flowing over the first guide plate 23 is suppressed.

Next, the upper surface of the first guide plate 23 is layered,
Further, the pachinko balls 72 that have flowed to the right (in the RH direction in FIG. 1) in a state of two or more rows in the front-back direction (F or R direction in FIG. 2) are the first About 30 to 35 mm between the right end of the guide plate 23 (RH direction in FIG. 3) and the vertical surface 17 at the right end (RH direction in FIG. 3) of the storage tank 14a.
The storage tank 1 falls from the gap of
Guided on the bottom surface 16 of 4a. Since the bottom surface 16 of the storage tank 14a is inclined so that the left side (LH direction in FIG. 3) is lower than the right side (RH direction in FIG. 3), the pachinko ball 7
2 flows to the left.

However, the gap between the second guide plate 27 and the bottom surface 16 in the vertical direction (U or D direction in FIG. 3) is the pachinko ball 7
Since 2 is made in such a size that it can flow in two layers or less, it is guided in layers to the left (LH direction in Fig. 3). Therefore,
The pachinko balls 72 flowing through the gap between the second guide plate 27 and the bottom surface 16 also collide with each other and hardly rub against each other, and the collision of the pachinko balls 72 and the generation of static electricity due to friction are suppressed.

Further, the upper surface of the first guide plate 23, the inner side surfaces of the four vertical surfaces 17, 18, 19, 20 around the storage tank 14a and the upper surfaces of the bottom surface 16 are coated with nickel or carbon is mixed. Since it is formed of a conductive resin, the upper surface of the first guide plate 23 and the storage tank 14
The static electricity charged on the pachinko ball 72 flowing on the bottom surface 16 of a is released to the ground through the grounding member 51 and the grounding terminal 52. In addition, the pachinko ball 72 in the storage tank 14a has the first guide plate 2 made of a conductive material.
3 and the bottom surface 16 of the storage tank 14a flow longer, which is advantageous in terms of static electricity removal.

The pachinko ball 72 is stored in the storage tank 14.
When it reaches the portion where the static eliminator 30 is installed while flowing to the left (LH direction in FIG. 3) on the bottom surface 16 of a, it contacts the conductive element 31. In particular, since the tip of the conductive element 31 is formed to be sharp and sharp, an electric field is likely to concentrate on the tip, and when the pachinko ball 72 approaches the conductive element 31 and comes into contact with the pachinko ball 72, electric discharge easily occurs, and the pachinko ball 72 moves to the first position. The static electricity charged on the pachinko ball 72 that could not be removed while flowing through the upper surface of the guide plate 23 and the bottom surface 16 of the storage tank 14a is easily guided to the conductive element 31, and the static electricity guided to the conductive element 31. Is guided to the ground terminal 52 by the ground member 51, and finally escaped from the ground terminal 52 to the ground. Since the conductive element 31 is a flexible thin plate having a thin thickness as described above, the conductive element 31 is
Even if the pachinko ball 72 comes into contact with, the conductive element 31 hardly affects the flow of the pachinko ball 72.

In addition, the conductive element 31 of the static eliminator 30
The static electricity generated and charged in the pachinko ball 72 after passing through is guided to the grounding member 51 through the electrostatic conductive surface formed on the bottom surface 16 of the storage tank 14a, and finally escaped to the ground. In this way, the pachinko balls 72 from which static electricity has been removed are sent from the long hole 29 provided in the bottom surface 16 of the storage tank 14a to the tank rail 15 connected to the lower side of the storage tank 14a.

Therefore, generation and charging of static electricity of the pachinko balls 72 in the storage tank 14a are suppressed, and static electricity charged before being supplied to the storage tank 14a and static electricity generated in the storage tank 14a are also stored. 14a
Since the static electricity is removed by the internal static electricity removing mechanism, the pachinko ball 72 is not discharged, and noise due to the discharge is not generated, so that the electronic control circuit arranged in the pachinko gaming machine 2a is not disturbed by the noise.

Further, the storage tank 14a has the same outer shape and the shape of the mounting flanges 41 and 42 for the pachinko gaming machine 2a as the shape of the storage tank of the conventional pachinko gaming machine 2. Therefore, the storage tank 14 according to the present invention
a is not only compatible with conventional storage tanks 14,
Even if the pachinko gaming machine 2a is replaced or renewed due to a design change or the like, the storage tank 14a can be removed and attached to the pachinko gaming machine 2a after being replaced or renewed and used again. Therefore, the storage tank 14a can be repeatedly used many times. Then, since the storage tank 14a can be used for a long period of time, the cost of the storage tank 14a can be reduced.

[Brief description of drawings]

FIG. 1 is a diagram showing a storage tank for a static electricity countermeasure of a pachinko ball.

FIG. 2 is a perspective view showing a storage tank for preventing static electricity from pachinko balls.

FIG. 3 is a diagram showing a cross section taken along the line AA of FIG.

FIG. 4 is a diagram showing a BB cross section of FIG. 2;

5 is a diagram showing a cross section taken along the line CC of FIG.

FIG. 6 is a diagram showing an entire back structure of a conventional pachinko gaming machine.

FIG. 7 is a partially enlarged view showing the upper back surface of the conventional pachinko gaming machine.

[Explanation of symbols] 2, 2a ... Pachinko machines 12 ... Hose 13 ... Replenishing device 14, 14a ... Storage tank 15 ... Tank rail 16 ... bottom 17, 18, 19, 20 ... Vertical surface 21 ... Guide member 22, 26 ... Bolt 22a, 26a, 29 ... elongated holes 23 ... First guide plate 24, 28, 41, 42 ... Flange 27 ... Second guide plate 30 ... Static eliminator 31 ... Conductive element 32 ... Conductive element mounting rod 33 ... screw 34 ... Notch groove 51 ... Grounding member 52 ... Grounding terminal 72 ... Pachinko ball

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hidekatsu Takeuchi             15-14 Nishi 2-chome, Higashino-cho, Kasugai City, Aichi Prefecture (72) Inventor Makoto Yanagawa             2-102 Mino-cho, Kasugai City, Aichi Prefecture F-term (reference) 2C088 BA35 BA66 BA67 BC63 EA02

Claims (9)

[Claims] 1. A storage tank for preventing static electricity of a pachinko ball in a pachinko gaming machine, the guide member being provided in the storage tank and guiding the pachinko ball in a layered manner in the storage tank. And a static electricity removing mechanism provided in the storage tank for removing static electricity charged in the pachinko ball, and a storage tank for preventing static electricity of the pachinko ball. 2. The static electricity of a pachinko ball according to claim 1, wherein the guide member is composed of at least two guide plates arranged at predetermined intervals in a vertical direction. Storage tank for countermeasures. 3. The pachinko ball according to claim 1, wherein the static electricity removing mechanism has a static electricity removing device that removes static electricity by contact between the pachinko ball and a conductive element. Storage tank for measures against static electricity. 4. The pachinko ball static electricity countermeasure according to claim 3, wherein a plurality of the static electricity removing devices are attached to the guide plate arranged at the lowermost side of the guide member. Storage tank. 5. The static electricity eliminator has a plurality of conductive elements, and the conductive elements are grounded via a grounding member, according to claim 3 or 4. Storage tank for static electricity countermeasures for pachinko balls. 6. The storage for preventing static electricity of a pachinko ball according to claim 3, wherein the conductive element is formed of a strip-shaped plate made of carbon fiber. tank. 7. The static electricity of the pachinko ball according to claim 1, wherein the static electricity removing mechanism has an electrostatic conductive surface that removes static electricity by contact between the pachinko ball and the conductive surface. Storage tank for countermeasures. 8. The electrostatic conductive surface is provided on an upper surface of the guide plate and an inner side surface of the storage tank, and the electrostatic conductive surface is grounded via a grounding member. Storage tank for static electricity countermeasures for pachinko balls described in. 9. The pachinko ball as a countermeasure against static electricity according to claim 7, wherein the electrostatic conductive surface is formed of a conductive resin mixed with a metal material or carbon. Storage tank.