JP2540102Y2 - Storage structure for prize balls in pachinko machines - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a storage structure for a prize ball in a pachinko game machine, and more particularly, to play a required game using a pachinko ball and as a reward (prize) for winning a prize. The present invention relates to a storage structure for storing a considerable amount of pachinko balls prepared for a prize ball on the back side of a pachinko game machine that discharges similar pachinko balls.

[0002]

2. Description of the Related Art As is well known, for this type of gaming machine,
There is a pachinko machine that launches a game of winning a game ball by hitting a pachinko ball, which is a game moving body, one by one into a game surface, and an arrangement ball machine that launches a combination game of symbols. Each of these gaming machines is equipped with a storage supply / discharge path for prize balls on the back side of each gaming machine, and is installed on a frame (commonly referred to as an “island”) in a game store and provided for a game. In the above, a considerable amount of pachinko balls supplied from the ball replenishment facility installed on the installation frame base side in a timely manner are accommodated in the storage supply and discharge section for prize balls, and are temporarily stored. Under these circumstances, during each game, for the generation of safe balls by winning game balls into the winning opening, and for the score establishment by the combination of symbols based on the penetration of game balls into each opening, A predetermined number of prize balls corresponding to the formation of the prize are discharged from the storage / supply / discharge unit.

[0003] On the other hand, the storage and discharge section for prize balls in each gaming machine has a basic configuration in which a mechanism set plate set on the back side of the front frame with respect to the outer frame includes:
A ball tank for directly storing the balls thrown in from the respective ball distribution units in the ball supply facility from above to below,
A rectification gutter and a delivery gutter for aligning and flowing the spheres discharged from the sphere tank and a prize sphere discharge unit for discharging the spheres in a predetermined number of units are sequentially connected. And when opening and closing the front frame,
The position of the ball tank itself with respect to the mechanism set board can be set to a lower level in advance so that the uppermost ball tank, which is the ball supply and storage source, does not collide with or interfere with the upper frame rod or the ball placement unit of the outer frame. A part of the upper edge of the opening of the tank is previously formed low. By the way, in the ball supply facilities in each game store,
The lower end and the ball discharge port of each ball distribution unit provided separately for each gaming machine may face the upper surface of the opening of the ball tank in a state where it is lower than the upper frame rod of the outer frame. Many.

[0004]

In the storage and discharge section of the gaming machine implemented as described above, it is important that the ball can be appropriately accommodated and discharged as much as possible. As a countermeasure, a ball tank serving as a ball storage and supply source is shaped as large as possible in consideration of the overall size of the gaming machine, and studies are being made to increase its storage capacity. However, as the most suitable type of the spherical tank, a synthetic resin molded into a horizontal rectangular shape having an open upper surface and an inner surface has been widely used for many years. There is also a point easily deformed in the expanding direction. For this reason, even if a ball tank having such properties is formed in a large size, the tank itself may be deformed due to the weight of a considerable amount of stored balls, vibrations and impacts caused when the front frame is opened and closed, and furthermore, the installation position may be shifted. As a countermeasure, there is a problem that a technique for properly reinforcing and positioning the entire ball tank must be separately considered.

[0005] In the above-described ball tank having an open top, the ball in the tank may spill when the ball is supplied by the ball replenishing facility or when the front frame is opened and closed. As disclosed in Japanese Utility Model Publication No. 63-19094, there has been a proposal to attach a fall prevention member 41 formed of a soft synthetic resin to a part of the ball tank 8 (the outer wall portion at the upper edge of the opening). This fall prevention member 41 is
Even if it is a suitable ball spill prevention material which can be easily attached by sandwiching the fixing portion 42 having a U-shaped cross section at the upper edge of the ball tank 8,
If the ball tank 8 itself is easily deformed, the fixing portion 42 is likely to be loosened, and the ball spill prevention function may not be properly performed in the original attached posture. In other words, this fall prevention member 41 is
Is easy to use when the upper edge has a uniform thickness, but is difficult to use when the reinforcing rib is formed along the upper edge.

[0006]

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks, the present invention has been proposed to solve the above problems, and is intended to be a ball storage and supply source in a storage and discharge unit for prize balls on the back side of a gaming machine. A reinforcing portion is formed on the upper peripheral edge of the opening of the tank to appropriately strengthen the entire ball tank to eliminate deformation, and a ball spill prevention member is easily detachably attached to the storage ball by using the reinforcing portion. An object of the present invention is to provide a storage structure for a prize ball, which can prevent the ball from falling off and can increase the storage (accommodation) capacity of the entire ball tank.

[0007]

[Means for solving the problems] To overcome the above-mentioned problems,
In order to achieve the intended purpose, the storage structure for prize balls in the pachinko game machine according to the present invention is installed at the upper end of the storage supply and discharge path on the back side of the pachinko game machine, and supplied from the ball supply facility side. A ball tank capable of storing a considerable amount of pachinko balls for use as prize balls, and a storage auxiliary member for preventing ball spillage that can be detachably attached to the upper edge of the opening of the ball tank, The tank is formed integrally with a reinforcing rib having an appropriate cross-sectional shape on an upper peripheral edge of an opening of a main body formed into a rectangular box shape having an upper surface opened, and a suitable engaging portion is formed on a required portion of the rib, and the storage auxiliary member is formed. Is
A rail strip having a required length adapted to the upper peripheral edge of the opening of the main body of the spherical tank, and a supporting edge on a lower edge side and a protective edge on an upper edge side extending in the longitudinal direction are integrally formed; In the required portion, an engaging portion that can be fitted or engaged with the engaging portion is formed, and a plurality of protective pieces having appropriate elasticity rising from the upper edge of the opening of the main body are formed on the protective edge portion. It is characterized by being formed in parallel.

[0008]

The storage auxiliary member is attached to the ball tank by fitting or engaging the engagement portion of the storage auxiliary member with the engagement portion formed on the reinforcing rib of the main body of the ball tank. The resilient protection piece of the member rises at a required height from the upper end of the opening of the main body, functions as a ball spill prevention wall, and increases the storage capacity of the ball in the ball tank. The bouncing of the pachinko balls supplied from the ball supply facility into the ball tank is suitably prevented by the storage assisting member. Further, when the protective piece of the storage auxiliary member interferes with the ball replenishing equipment, the protective piece elastically deforms, thereby preventing damage or breakage of the ball tank, the ball replenishing equipment, and further the storage auxiliary member. Can be avoided.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of a storage structure for a prize ball in a pachinko game machine according to the present invention will be described in detail with reference to the accompanying drawings. In the present embodiment, a pachinko machine in which a pachinko ball, which is a game moving body, is driven into a game surface one by one to develop a prize game of a game ball, and a storage structure for a prize ball when the game is executed on the machine. For example.

First, as briefly shown in FIG. 1, the back side of the pachinko machine P installed on the installation frame M in the amusement store will be briefly described. A mechanism is provided on the back side of the front frame 2 mounted on the outer frame 1. The set board 3 is detachably set. In the set board 3, as means relating to storage, supply and discharge of prize balls, as shown in the drawing, the ball distribution unit 20 of the ball replenishment facility 19 is used.
Tank 4 that can temporarily store the pachinko balls (also referred to as prize balls) supplied from the company, rectification gutters 5 of two rows that can align and flow prize balls from the ball tanks 4, and prizes from the rectification gutters 5 A row of delivery gutters 6 that can send the spheres under reduced pressure are sequentially connected. A prize ball is placed below the sending gutter 6.
The prize ball discharge device 7 of an electric detection type capable of detecting the number of balls and discharging the required number is installed for each case,
Below this device 7, first and second discharge paths 8, which are connected to upper and lower bowls (both not shown) on the front of the front frame 2,
9 are defined.

As another configuration of the mechanism set board 3, as shown schematically in FIG. 1, two rows of prize balls are alternately placed one by one at the orthogonal connection between the straightening gutter 5 and the sending gutter 6. The ball feed aligning mechanism 10 is provided for receiving and singly arraying. In addition, switching control is performed on a communication portion between the first discharge path 8 and the ball emptying path 11 based on an operation detection condition,
The prize ball discharged from the prize ball discharge device 7 is used to remove the ball
A switching ball punching device 12 capable of discharging to 1 is provided. On the way of the second discharge path 9, there is provided a prize ball filling detection mechanism 13 capable of detecting the filling amount of the prize ball and temporarily disabling the hit ball launching device 18. On the other hand, a discharge path 15 for the out ball and a collective discharge path 16 for the safe sphere are defined below each other below the window 14 formed in the center of the set board 3. In addition, an electric detection type safe ball processing device 17 capable of detecting and stopping all the safe balls one by one and performing a discharge process after the end of the prize ball discharging operation is provided.

The storage structure for a prize ball of the present embodiment implemented in the above-mentioned pachinko machine P has, as shown in FIGS. As a ball storage and supply member, a proper reinforcing measure is taken, and the storage auxiliary member 2 for preventing the ball from spilling into the ball tank 4.
7 is detachably attached to the whole ball storage capacity (capacity)
Can be suitably increased.

That is, the ball tank 4 is shown in FIG.
As shown in the figure, a mechanism set board is formed by a relatively hard synthetic resin material (for example, an ABS resin material) into a horizontal rectangular shape whose upper surface and inner surface are open, and is formed on both left and right outer sides of a main body 21 having a flat horizontal concave shape. Attachment pieces 22, 22 fixed by screws or the like to the installation portion 3A of
A supply port 24 communicating with the most upstream end of the straightening gutter 5 is opened at the most downstream end of the inclined bottom plate 23. A reinforcing rib 25 having a flat concave shape is formed with a uniform width over the entire area outside the upper peripheral edge of the opening of the main body 21.
The overall rigidity is increased, and under this, a vertically slit-shaped insertion opening 26 is formed at each portion of the rib 25 extending in the longitudinal direction. The reinforcing rib 25 has a flat upper surface, and a portion excluding each of the insertion openings 26 has an inverted L-shaped side cross section (see FIG. 10).

As shown in FIGS. 2, 11 and 12, the ball tank 4 is positioned and set with the opening of the main body 21 aligned with the installation portion 3A of the mechanism set board 3. In this state, the upper end edge and the rear end edge of the main body 21 are positioned at a required height difference interval and a depth protrusion difference with respect to the inner surface and the rear edge of the upper frame rod 1a of the outer frame 1. By the way, in the pachinko machine, the large size "Kansai frame" which is classified and referred to from the external size
And the small frame size “Kanto frame”. In the case of the latter “Kanto frame”, the above-mentioned height difference interval is considerably small.

On the other hand, the storage auxiliary member 27 attached to the above-mentioned ball tank 4 is made of a synthetic resin material capable of moderate elastic deformation.
(For example, a soft vinyl chloride resin), as shown in FIG.
A support edge 29 and a protection edge 31 are integrally formed on the upper and lower portions of the center seat portion 28 at the horizontal center, and a rail band shape of continuous unevenness having a length suitable for the upper edge of the opening of the ball tank 4 as a whole. Have been. In the center seat portion 28, a side cross-section rectangular shape having the same width as the upper surface of the reinforcing rib 25 is formed, and can also serve as a seat portion for the rib 25. In the supporting edge 29, the center seat 2
A plurality of insertion support pieces 30 are formed along the center of the lower surface of the lower surface 8 and can be densely inserted (press-fitted) into the respective insertion openings 26 in the longitudinal direction at appropriate intervals. ing. On the other hand, the protective edge portion 31 is formed upright along the center of the upper surface of the core seat portion 28, and a large number of protective pieces 32 are arranged at slit intervals smaller than the diameter of the sphere over the longitudinal direction. They are formed in parallel at the same height, and have a comb shape as a whole.

The storage auxiliary member 27 is bent and deformed into a flat concave shape over the entire upper peripheral edge of the opening of the ball tank 4 under the above-mentioned constant length size of the continuous uneven rail strip. In consideration of the case where it is attached to the main part of the periphery of the opening, the member 27 itself can be easily bent and cut at a required portion of the core seat 28 as shown in FIG. Is formed. The cut portion 33 is located at a position corresponding to the interval between the insertion support pieces 30 of the support edge 29 and the slit interval of each protection piece 32 of the protection edge 31, and is easily cut with a cutter or scissors. obtain. As a result, the entire length of the member 27 can be changed to a plurality of required lengths with respect to the upper peripheral edge of the opening of the ball tank 4. The notch 33 is formed on both sides of the center seat 28. According to this, the storage assisting member 27 itself can be bent and used without distinction between front and rear (inward and outward).

[0017]

In the pachinko machine storage structure for a prize ball of the present embodiment configured as described above, the ball tank 4 at the uppermost stage of the storage supply / discharge section of the mechanism set board 3 is provided with the ball storage / supply. Although the storage auxiliary member 27 is an optional accessory attached to the ball tank 4 as necessary, the storage auxiliary member 27 is, in most cases, the current pachinko machine to be implemented. It is desired to use it as an auxiliary member. In such a situation, the storage assisting member 27 can be attached and set in advance to the ball tank 4 so as to be integrated into one part. After the manufacture of the ball, or after installation on the installation frame M in the game store, etc.
May be attached to the ball tank 4 at the stage of assembling and manufacturing the mechanism set board 3 itself. In any case, the attachment timing and conditions of the member 27 itself are freely selected and handled. be able to.

The specific attachment state of the storage auxiliary member 27 will be described below with reference to the drawings.

First, in the example in which the member 27 is attached to the entire area of the upper peripheral edge of the opening of the ball tank 4, the notches 33, 33 on the left and right sides of the core seat 28 are used while keeping the entire member 27 in the above-described fixed length size. Then, both sides of the member 27 are bent in the same direction and the whole is deformed into a flat horizontally long concave shape (see the imaginary line in FIG. 7). Under this condition, the insertion support pieces 30 on each side of the support edge 29 are connected to the respective insertion openings 2 of the reinforcing ribs 25 of the ball tank 4.
6 and inserted from above (see FIGS. 9 and 10).
As a result, as shown in FIG.
The core seat 28 abuts on the upper surface of the reinforcing rib 25 and the protection piece 32 on each side of the protection edge 31 is firmly attached to the ball tank 4 in a state of standing at a uniform height. .

On the other hand, in an example in which the member 27 is attached to two sides (for example, the left side or the right side and the back side) of the upper peripheral edge of the opening of the ball tank 4, either the left side or the right side notch 3
3 is cut to set the member 27 to the required length, and the other cut portion 33 is used to bend either the left or right portion of the member 27 to deform the whole into a plane L shape.
Further, in an example in which the member 27 is attached to a main side portion (for example, a back side portion) of the upper peripheral edge of the opening of the ball tank 4, the left and right cut portions 3 are provided.
3, 33 is cut and the member 27 is changed to a required length and set. Then, with the member 27 in each state and condition,
As described above, each insertion support piece 30 of the supporting edge 29 is press-fitted into each insertion opening 26 of the reinforcing rib 25 from above. Thereby, the storage assisting member 27 is firmly attached in a state of standing upright from the upper surface of each side of the reinforcing rib 25.

As described above, in the storage structure for a prize ball of the present embodiment, a storage auxiliary member is provided in accordance with required conditions from the entire upper peripheral edge of the opening of the ball tank 4 to the required side. 27 is set to a required length partially cut from the fixed length size, and based on the insertion (press-fit) form between each insertion opening 26 of the reinforcing rib 25 and each insertion support piece 30 of the support edge 29. , Can be quickly and firmly attached. In any state where the storage auxiliary member 27 is attached to the ball tank 4, the portion above the lower surface of the core seat portion 28 (mainly the protection edge portion 31) is uniformly positioned on the upper surface of the reinforcing rib 4 of the ball tank 4. A high ball spill-prevention wall, which allows the ball tank 4
The whole is effectively deepened and the storage capacity of the sphere is increased.

Therefore, when the ball is supplied to the ball tank 4 from the ball distribution unit 20 by the operation of the ball replenishing equipment 19, the ball is stored in the pachinko machine P used for the game. The auxiliary member 27 can appropriately prevent the ball from spilling out and effectively store a considerable amount of the ball.
(Contained). In addition, when the pachinko machine P is inspected or repaired, etc., when the front frame 2 is opened or closed again with respect to the outer frame 1, due to the structural play of the open / close connection support portion of the both frames 1, 2, Even if the front frame 2 suddenly goes down when it separates from the outer frame 1 or goes up suddenly when it is combined with the outer frame 1, there may be considerable vibration, impact, etc. In addition, the storage sphere in the ball tank 4 is protected by the storage auxiliary member 27, so that the spill can be suitably avoided.

In addition, when the front frame 2 is opened and closed, damage due to interference with the ball distribution unit 20 can be avoided. That is, assuming that the pachinko machine is the above-mentioned "Kanto frame", as shown in FIG. 11, all protection at the protection edge 31 of the storage auxiliary member 27 attached to the ball tank 4 is performed. On the premise that the upper end of the piece 32 is positioned at substantially the same height as the inner surface of the upper frame rod 1a of the outer frame 1, each of the ball arrangement units 20 in the ball replenishment facility 19 is slightly viewed from the ball tank 4. Regardless of whether it is installed at the left, center, or slightly right position, its ball discharge port is located on the upper frame rod 1a.
In many cases, the lower level faces the upper surface of the opening of the ball tank 4. For this reason, in a situation where there is a height difference H between the upper end of the protective edge portion 31 and the lower end of the ball distribution unit 20 as shown in FIG. And the protection piece 32 is the unit 2
At the time of interference with zero, it can be elastically deformed inward and outward so that the impact can be suitably reduced, and breakage or breakage of the ball tank 4, the ball distribution unit 20, and the storage auxiliary member 27 can be avoided.

In the storage structure of this embodiment, as illustrated in FIG. 2, the slits 5 formed in the installation portion 3A of the mechanism set board 3 and the inside of the main body 21 of the ball tank 4 respectively.
Partition plate 5 for changing the storage capacity of the sphere between 2,53
4 is replaceably inserted.

[0025]

[Modification] The storage structure for a prize ball in a pachinko game machine to which the present invention is applied is not limited to the above-described embodiment, and other examples in which this structure is appropriately applied or changed are also preferably recommended.

That is, as shown in FIG. 13, in the ball tank 4, a reinforcing rib 25 is integrally formed along the upper peripheral edge of the opening of the main body 21. An elastically deformable hook portion 35 is formed on the entire edge or the required edge of the lower end of 25. On the other hand, in the storage assisting member 27, the engaging holes 36 are formed at each position of the center seat 28, and the supporting edge 29 below the center seat 28 can be fitted into the reinforcing rib 25 in a sectional shape. To form an elastically deformable hook portion 37 at the lower end thereof.
Then, the storage auxiliary member 27 is laterally fitted to the reinforcing rib 25 of the ball tank 4, and the engaging elements / engaging holes 34, 36 and the hook portions 35, 37 are engaged with each other.

As illustrated in FIG. 14, in the ball tank 4, two upper and lower reinforcing ribs 25A and 25B are integrally formed along the upper edge of the opening of the main body 21, and a required portion between the ribs 25A and 25B is engaged. A joint 38 is formed. On the other hand, in the storage auxiliary member 27, the support edge 2 below the center seat 28 is provided.
Hook portions 39, 39 which can be elastically deformed protrude from the inside of 9. Then, the storage auxiliary member 27 is laterally fitted to the reinforcing ribs 25A, 25B of the ball tank 4, and the hook portions 39, 3
9 into the engagement opening 38.

As illustrated in FIG. 15, the core seat 28 and the supporting edge 29 of the storage auxiliary member 27 are tightly closed against the reinforcing rib 25 formed along the upper peripheral edge of the opening of the main body 21 of the ball tank 4. And the engagement seats 40 and 40 formed above and below the reinforcing rib 25,
Form in which the engagement projections 41, 41 formed on the inside of the inside are engaged.

As shown in FIG. 16, the reinforcing rib 25 formed along the upper peripheral edge of the opening of the main body 21 of the ball tank 4 is attached to the core seat 28 and the supporting edge 29 of the storage auxiliary member 27.
And the engaging projections 44 and the hook portions 45 appropriately formed on the storage auxiliary member 27 side are engaged with the engaging grooves 42 and the engaging holes 43 appropriately formed on the ball tank 4 side. The form to be made.

As illustrated in FIG. 17, the core seat 28 of the storage assisting member 27 and the reinforcing rib 25 and the engagement groove 46 formed along the upper peripheral edge of the opening of the main body 21 of the ball tank 4 are formed. Support edge 29 and upper and lower engagement edges 47,4
7 is tightly fitted and engaged.

As illustrated in FIG. 18, a reinforcing rib 25 formed along the upper peripheral edge of the opening of the main body 21 of the ball tank 4 is provided.
The core seat 28 and the support edge 29 of the storage auxiliary member 27 and the engagement groove 50 and the engagement edge 51 are tightly fitted and engaged with the engagement ridge 48 and the engagement groove 49. And the like. However, in any of the storage assisting members 27, an example is shown in which the protective edge portion 31 has a comb shape in which a plurality of protective pieces 32 are arranged in parallel. Further, the core seat 28 may be omitted.

The storage structure for the prize balls by the ball tank 4 and the storage auxiliary member 27 described above is an arrangement ball machine using a pachinko ball as a game medium and a prize medium, and a combination game machine (also called a pachinko slot machine). Of course, the present invention is also suitably implemented in a gaming machine that is used.

[0033]

As described above, according to the storage structure for a prize ball in a pachinko game machine according to the present invention, the reinforcing rib is integrally formed on the upper peripheral edge of the opening of the main body of the ball tank, and the reinforcing rib is inserted through the rib. Since the storage assisting member is configured to be detachably attached and settable, the rigidity of the ball tank can be increased, and the ball can be prevented from falling from the ball tank. In addition, since the protection piece of the storage auxiliary member stands at a predetermined height from the upper peripheral edge of the opening of the ball tank, the storage capacity of the pachinko balls in the tank can be increased. In addition, since the protective piece has elasticity, when the protective piece interferes with the ball replenishing equipment, the protective piece is elastically deformed, thereby damaging the ball tank, the ball replenishing equipment, and the storage auxiliary member. This has the effect of avoiding breakage or breakage.

[Brief description of the drawings]

FIG. 1 is a rear view of a pachinko machine employing a storage structure for a prize ball according to an embodiment.

FIG. 2 is an exploded perspective view of a main part showing a storage structure for a prize ball according to the embodiment.

FIG. 3 is a rear view of the ball tank shown in FIG. 2;

FIG. 4 is a plan view of the ball tank shown in FIG. 2;

FIG. 5 is a rear view of a main part showing the ball tank shown in FIG. 2 with a part cut away.

FIG. 6 is a rear view of the storage auxiliary member shown in FIG. 2;

FIG. 7 is a plan view of the storage auxiliary member shown in FIG.

FIG. 8 is a rear view of a main part of the storage auxiliary member shown in FIG. 2;

FIG. 9 is a schematic perspective view of a main part showing a state immediately before a storage auxiliary member is attached to a ball tank.

FIG. 10 is a longitudinal sectional view of a main part showing a state where a storage auxiliary member is attached to a ball tank.

FIG. 11 is an explanatory view showing a main part of the pachinko machine in a state where a storage assisting member is attached to a ball tank;

FIG. 12 is an explanatory view showing a state in which a protective piece is brought into contact with the ball placement unit and elastically deformed by opening a front frame of the pachinko machine.

FIG. 13 is a schematic perspective view of a main part showing a modified example of the storage structure for a prize ball according to the present invention.

FIG. 14 is a schematic perspective view of a main part showing a modified example of the storage structure for a prize ball according to the present invention.

FIG. 15 is a cross-sectional view of a main part showing a modified example of the storage structure for a prize ball according to the present invention.

FIG. 16 is a sectional view of a main part showing a modified example of the storage structure for a prize ball according to the present invention.

FIG. 17 is a cross-sectional view of a main part showing a modified example of the storage structure for a prize ball according to the present invention.

FIG. 18 is a cross-sectional view of a main part showing a modified example of the storage structure for a prize ball according to the present invention.

[Explanation of symbols]

4 Ball Tank 19 Ball Replenishment Equipment 21 Main Body 25 Reinforcement Rib 26 Insertion Port 27 Storage Aid 29 Support Edge 30 Insert Support 31 Protective Edge 32 Protective Piece 34 Engager 35 Hook 36 Engagement Hole 37 Hook 38 Engagement 39 Hook part 40 Engagement groove 41 Engagement projection 42 Engagement groove 43 Engagement opening 44 Engagement projection 45 Hook part 46 Engagement concave groove 47 Engagement rim 48 Engagement ridge 49 Engagement concave groove 50 Engagement concave Groove 51 Engagement edge

Claims (1)

(57) [Scope of request for utility model registration] 1. A ball tank which is provided at the upper end of a storage supply / discharge path on the back side of a pachinko game machine and is capable of storing a considerable amount of pachinko balls supplied from a ball supply facility (19) for prize balls. 4) and a storage auxiliary member (27) for preventing ball spillage that can be detachably attached to the upper edge of the opening of the ball tank (4), and the ball tank (4) has an upper surface opening. A reinforcing rib (2) having an appropriate cross-sectional shape is provided on the upper peripheral edge of the opening of the main body (21) formed in a rectangular box shape.
5) is integrally formed, and a necessary portion of the rib (25) is formed with an appropriate engaging portion (26, 34, 35, 38, 40, 42, 43, 46, 48, 49), and the storage auxiliary member is formed. (27) is a rail strip of a required length that fits the upper peripheral edge of the opening of the main body (21) in the ball tank (4), and has a support edge (29) on the lower edge side in the longitudinal direction and an upper edge. The protective edge (31) on the edge side is integrally formed, and the engaging portion (26, 34, 35, 38, 40, 42, 43, 46, 4) is formed on a required portion of the support edge (29).
8,49) to engage or engage with (30,36,
37, 39, 41, 44, 45, 47, 50, 51) while forming a protective edge (3
A storage structure for a prize ball in a pachinko gaming machine, wherein a plurality of protective pieces (32) having appropriate elasticity rising from the upper edge of the opening of the main body (21) are formed in parallel in (1). .