Pachinko machine

Abstract

To provide a game machine provided with a partition member capable of suppressing damage when formed.SOLUTION: In a Pachinko machine provided with a game board where there is provided a partition member 1070 outside a game area, the partition member 1070 is provided with: an outer wall 1071 forming an outer edge; an inner wall 1072 provided at a position nearer the game area than the outer wall 1071; and a specific reinforcement wall 1073 provided to bridge across the outer wall 1071 and the inner wall 1072. A demolding trace part 2519 as a specific trace part that can occur when molding the partition member 1070 is formed at one or both rear ends of the outer wall 1071 and the inner wall 1072 is formed, and not formed at the rear end of the specific reinforcement wall 1073.SELECTED DRAWING: Figure 131

Description

Technical Field

[0001] The present invention relates to a gaming machine such as a pachinko machine (commonly also referred to as a "pachinko machine").

Background Art

[0002] In a gaming machine such as a pachinko machine, a gaming area where the game is played by the flow of game balls is provided, and a front component member that partitions the outer periphery of the gaming area is provided (for example, Patent Document 1). The front component member is composed of at least one partitioning member.

[0003] By the way, in the partitioning member, if it is damaged such as deformed during molding, the damage may affect the flow of the game balls, and the game balls may move differently from the design.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Therefore, in view of the above situation, the present invention More convenient than conventional ones aims to provide a gaming machine.

Means for Solving the Problems

[0006] The present invention relates to a game board on which a game area is formed, and is provided on the front side of the game board, the Outside the gaming area positioned at Partitioning member and includes In a gaming machine equipped with a game board, the partitioning member has an outer wall that forms an outer edge, and an inner wall provided at a position closer to the gaming area than the outer wall. A specific reinforcing wall provided to connect the outer wall and the inner wall; During the molding of the partitioning member, demolding Trace portion and has the partitioning member is provided with a contact area that contacts the front surface of the game board and a non-contact area that does not contact the front surface of the game board, the contact area The rear end portion of one or both of the outer wall and the inner wall is provided at, and a demolding trace portion is formed in the contact area, the non-contact area is provided at a plurality of locations of the partitioning member including at least the rear end portion of the specific reinforcing wall, among the plurality of non-contact areas Provided at the rear end portion of the specific reinforcing wall no demolding trace portion is formed in the non-contact area, and a demolding trace portion is formed in the other non-contact areas, when the partitioning member is removed from the game board, both the demolding trace portion of the contact area and the demolding trace portion of the non-contact area are visible from the back side of the partitioning member A gaming machine characterized by this. In addition, as another invention different from the present invention, the following means are disclosed for reference. Means 1: In a gaming machine, "In a gaming machine having a game board provided with a partitioning member outside the game area, The partitioning member Has an outer wall forming an outer edge, An inner wall provided at a position closer to the game area than the outer wall, And a specific reinforcing wall provided to connect the outer wall and the inner wall, and A specific trace portion that may occur during the molding of the partitioning member is formed at the rear end portion of one or both of the outer wall and the inner wall, and is not formed at the rear end portion of the specific reinforcing wall." It is characterized by this.

[0007] Here, examples of the "partitioning member" include "a member formed to surround the game area with one member (a member that constitutes the front component by itself)", "a member formed to surround the game area with a plurality of members (a member that is divided into a plurality of parts and constitutes a part of the front component)", and the like.

[0008] In addition, as the "reinforcing wall", a step may not be provided between the rear end portions of the outer wall and the inner wall, or a step may be provided between the rear end portions of the outer wall or the inner wall. Also, as the "specific reinforcing wall", it may be all of the plurality of reinforcing walls, or it may be a part of the reinforcing walls.

[0009] Furthermore, examples of the "specific trace portion" include "extrusion traces (demolding trace portions) attached to the product by a mechanism (e.g., ejector pins, push-up cores, straight-up cores, protruding cores, etc.) for removing the product from the mold after molding the product using a mold", "gate traces of the injection port for injecting molten resin into the mold", "parting lines due to the split surface of the injection mold", and the like. Examples of the shape of this "specific trace portion" include "a shape of a part of a circle such as a semicircle", "a circle", "a triangle", "a quadrilateral", "a pentagon", "a hexagon", "a polygon", "an irregular shape", "a star shape", "a heart shape", and the like.

[0010] According to the configuration of Means 1, in a gaming machine including a game board provided with a partitioning member outside the game area, the partitioning member has an outer wall forming an outer edge, an inner wall provided at a position closer to the game area than the outer wall, and a specific reinforcing wall provided so as to connect the outer wall and the inner wall. The specific trace portion that may occur during the molding of the partitioning member is formed at the rear end of one or both of the outer wall and the inner wall, and is not formed at the rear end of the specific reinforcing wall (refer to the description of Section [11-2. Feature 1 of Specific General Members], partitioning member 1070, demolding trace portion 2519, FIGS. 131 to 133, etc. in [Mode for Carrying Out the Invention]).

[0011] According to this configuration, in the partitioning member provided outside the game area on the game board, a specific trace portion that may occur during molding is provided at the rear ends of the outer wall and the inner wall, and the specific trace portion is not provided at the rear end of the specific reinforcing wall that connects the outer wall and the inner wall. As a result, during the molding of the partitioning member, the rear end of the specific reinforcing wall is not pressed and deformed by an ejector pin or the like, damage during molding can be suppressed, and the appearance of the partitioning member is not deteriorated. Therefore, since the deformation of the partitioning member is suppressed, even if the game ball flowing through the game area contacts the partitioning member, the game ball does not move differently from the design, so that the player is not given a sense of distrust, and the player can enjoy the game using this gaming machine.

[0012] In addition, since the partitioning member is provided with a specific reinforcing wall that connects the outer wall and the inner wall, the strength and rigidity of the partitioning member can be enhanced by the reinforcing wall including the specific reinforcing wall, and even if a game ball abuts against the inner wall, it will not be deformed or damaged.

[0013] Note that it is desirable to provide the specific trace portion at least in the vicinity of the connection portion between the outer wall and the specific reinforcing wall. That is, when the partitioning member is demolded from the mold, a portion in the vicinity of the connection portion between the outer wall and the specific reinforcing wall at the rear end portion of the outer wall is pressed by an ejector pin or the like. As a result, even if the rear end portion of the specific reinforcing wall is not pressed, since a portion in the vicinity of the connection portion between the outer wall and the specific reinforcing wall at the rear end portion of the outer wall is pressed by an ejector pin or the like, the specific reinforcing wall and the like can be smoothly extracted from the mold, and damage during molding can be suppressed.

[0014] In addition, it is desirable to form the specific trace portion in a semicircular shape, and to provide the specific trace portion formed on the outer wall such that the semicircular arc portion faces the inner wall side. As a result, since the semicircular specific trace portion provided at the rear end portion of the outer wall is provided so as to become wider as it approaches the product surface (surface) of the partitioning member that can be visually recognized from the outside, when demolding from the mold in the manufacture of the partitioning member, a portion on the product surface side at the rear end portion of the outer wall is pressed with sufficient force by an ejector pin or the like, so that it can be neatly removed from the mold, the appearance of the partitioning member will not deteriorate, and damage such as deformation can be suppressed.

[0015] Also, it is desirable to form the specific trace portion in a semi-circular shape and provide the specific trace portion formed on the inner wall such that the semi-circular arc portion faces the outer wall side. As a result, the semi-circular specific trace portion provided at the rear end portion of the inner wall is provided to become wider as it approaches the product surface (front surface) of the partition member that can be visually recognized from the outside. Therefore, when demolding from the mold in the manufacture of the partition member, the portion on the product surface side at the rear end portion of the inner wall is pressed with sufficient force by an ejector pin or the like, so that it can be removed cleanly from the mold, the appearance of the partition member is not deteriorated, and damage such as deformation can be suppressed.

[0016] Furthermore, the partition member may be provided on the front side of the transparent game board, and the specific trace portion may be provided so as to be visible from the rear side of the game board. As a result, since it is possible to visually recognize the specific trace portion provided on the partition member from behind the transparent game board, when manufacturing (assembling) the gaming machine (game board), by looking at the specific trace portion of the partition member through the transparent game board, the mounting position and mounting orientation of the partition member can be confirmed.

[0017] Also, in the partition member, a step may be provided between the rear end portions of the specific reinforcing wall and the outer wall or the inner wall, respectively. As a result, even if the specific reinforcing wall is deformed during the manufacture (molding) of the partition member, the rear end portion of the specific reinforcing wall does not protrude beyond the rear end portions of the front wall or the inner wall. Therefore, when assembling the gaming machine (game board), the deformed specific reinforcing wall does not contact other members such as the game board and hinder the assembly, and the assembly can be surely performed.

[0018] Also, it is desirable to provide the specific trace portion in a common manner for the partition member and other members provided on the game board. As a result, since the specific trace portion provided on the partition member is in a common manner with the specific trace portions of other members provided on the game board, even if different models of partition members are mixed during manufacture or reuse, by confirming the aspects of those specific trace portions, it is possible to distinguish the partition members (to be grouped) used for the same model, prevent assembly mistakes, and improve workability.

[0019] Further, in the partition member, a recess may be provided in the vicinity of the specific trace portion. Thereby, even if powder is generated due to the partition member vibrating and rubbing against another member (basic member), the powder can be collected by the recess, so that it is possible to prevent the powder generated by rubbing from entering the game area, and it will not affect the movement (game) of the game ball or deteriorate the appearance of the gaming machine.

[0020] Means 2: In the configuration of Means 1, "The specific trace portion is provided at least in the vicinity of the connection portion between the outer wall and the specific reinforcement wall." It is characterized by this.

[0021] According to the configuration of Means 2, the specific trace portion is provided at least in the vicinity of the connection portion between the outer wall and the specific reinforcement wall (refer to the descriptions of the partition member 1070, the outer wall 1071, the reinforcement wall 1073, the demolding trace portion 2519, FIG. 131, etc. in [Mode for Carrying Out the Invention]).

[0022] According to this configuration, the specific trace portion is provided in the vicinity of the connection portion with the specific reinforcement wall at the rear end portion of at least the outer wall. That is, when the partition member is demolded from the mold, the portion in the vicinity of the connection portion with the specific reinforcement wall at the rear end portion of the outer wall is pressed by an ejector pin or the like. Thereby, even if the rear end portion of the specific reinforcement wall is not pressed, the portion in the vicinity of the connection portion with the specific reinforcement wall at the rear end portion of the outer wall is pressed by an ejector pin or the like, so that the specific reinforcement wall or the like can be smoothly removed from the mold, and damage during molding can be suppressed.

[0023] Means 3: In the configuration of Means 1, "The specific trace portion is formed in a semicircular shape, and the specific trace portion formed on the outer wall is provided such that the semicircular arc portion faces the inner wall side." It is characterized by this.

[0024] According to the configuration of means 3, the specific trace portion is formed in a semicircular shape, and the specific trace portion formed on the outer wall is provided such that the semicircular arc portion faces the inner wall side (refer to the descriptions of the partitioning member 1070, the outer wall 1071, the demolding trace portion 2519, FIG. 131, etc. in [Embodiment for Carrying Out the Invention]).

[0025] According to this configuration, the specific trace portion provided at the rear end portion of the outer wall is provided such that the semicircular arc portion faces the other side. That is, the semicircular specific trace portion is provided so as to become wider as it approaches the product surface (surface) of the partitioning member visible from the outside. Therefore, in the manufacture of the partitioning member, when demolding from the mold, the portion on the product surface side at the rear end portion of the outer wall is pressed with sufficient force by an ejector pin or the like, so that it can be removed neatly from the mold, the appearance of the partitioning member is not deteriorated, and damage such as deformation can be suppressed.

[0026] Means 4: In the configuration of means 1, "the specific trace portion is formed in a semicircular shape, the specific trace portion formed on the inner wall is provided such that the semicircular arc portion faces the outer wall side" is characterized in that.

[0027] According to the configuration of means 4, the specific trace portion is formed in a semicircular shape, and the specific trace portion formed on the inner wall is provided such that the semicircular arc portion faces the outer wall side (refer to the descriptions of the partitioning member 1070, the inner wall 1072, the demolding trace portion 2519, FIG. 131, etc. in [Embodiment for Carrying Out the Invention]).

[0028] According to this configuration, the specific trace portion provided at the rear end portion of the inner wall is provided such that the semicircular arc portion faces the other side. That is, the semicircular specific trace portion is provided so as to become wider as it approaches the product surface (front surface) of the partition member that can be visually recognized from the outside. Therefore, in the manufacture of the partition member, when demolding from the mold, the portion on the product surface side at the rear end portion of the inner wall is pressed with sufficient force by an ejector pin or the like, so that it can be neatly removed from the mold, the appearance of the partition member is not deteriorated, and damage such as deformation can be suppressed.

[0029] Means 5: In the configuration of Means 1, "The partition member is provided on the front side of the transparent game board, and the specific trace portion is provided so as to be visible from the rear side of the game board." It is characterized by this.

[0030] According to the configuration of Means 5, the partition member is provided on the front side of the transparent game board, and the specific trace portion is provided so as to be visible from the rear side of the game board (refer to the descriptions of the partition member 1070, the game panel 1100, the demolding trace portion 2519, FIG. 131, etc. in [Mode for Carrying Out the Invention]).

[0031] According to this configuration, since the partition member is provided on the front side of the transparent game board, it is possible to visually recognize the specific trace portion provided on the partition member from the rear of the game board. Therefore, during the manufacture (assembly) of the gaming machine (game board), by looking at the specific trace portion of the partition member through the transparent game board, it is possible to confirm the mounting position, mounting orientation, etc. of the partition member.

[0032] Means 6: In the configuration of Means 1, "The specific reinforcing wall is A step is provided between the rear end portions of the outer wall or the inner wall." It is characterized by this.

[0033] According to the configuration of means 6, the specific reinforcing wall has a step provided between the rear end portions of the outer wall or the inner wall (refer to the descriptions of the partitioning member 1070, the outer wall 1071, the inner wall 1072, the reinforcing wall 1073, FIGS. 131 to 133, etc. in [Mode for Carrying Out the Invention]).

[0034] According to this configuration, in the partitioning member, since a step is provided between the specific reinforcing wall and the rear end portions of the outer wall or the inner wall, even if the specific reinforcing wall is deformed during the manufacture (molding) of the partitioning member, the rear end portion of the specific reinforcing wall does not protrude more than the rear end portions of the front wall or the inner wall, etc. As a result, when assembling the gaming machine (game board), the deformed specific reinforcing wall does not contact other members such as the game board and hinder the assembly, and the assembly can be surely performed.

[0035] Means 7: In the configuration of means 1, "the specific trace portion is provided in a common manner by the partitioning member and other members provided on the game board". It is characterized by this.

[0036] Here, as "other members on the game board", there are "members constituting the remaining part of the pre-configuration member when the partitioning member constitutes a part of the pre-configuration member", "members attached to the same game board as the game board (game panel) to which the partitioning member is attached (for example, inner rail unit, start port unit, side unit, upper left side unit, center accessory, attacker unit, etc.)", and the like.

[0037] According to the configuration of means 7, the specific trace portion is provided in a common manner by the partitioning member and other members provided on the game board (refer to the descriptions of the pre-configuration member 1000, the partitioning member 1070, etc. in [Mode for Carrying Out the Invention]).

[0038] According to this configuration, since the specific trace portion provided on the partitioning member has the same form as the specific trace portions of other members provided on the game board, even if partitioning members of different models are mixed during manufacturing or reuse, etc., by checking the form of those specific trace portions, it is possible to distinguish the partitioning members (the ones that form a set) to be used for the same model, prevent assembly errors, and improve workability.

[0039] Means 8: In the configuration of Means 1, "The partitioning member is, A recess is provided near the specific trace portion." It is characterized by this.

[0040] By the way, since the partitioning member is provided outside the game area, when a game ball contacts the inner wall, the partitioning member may vibrate with respect to the member to which the partitioning member is attached (for example, a basic member such as a game board). And when the partitioning member vibrates with respect to the basic member, there is a risk that powder may be generated due to rubbing at the portion (for example, the specific trace portion) in contact with the basic member in the partitioning member, and the generated powder may enter the game area and affect the movement (game) of the game ball or deteriorate the appearance of the gaming machine.

[0041] According to the configuration of Means 8, the partitioning member has a recess provided near the specific trace portion (refer to the descriptions of the partitioning member 1070, the recess 1075, FIGS. 131 to 133, etc. in [Mode for Carrying Out the Invention]).

[0042] According to this configuration, in the partitioning member, since a recess is provided near the specific trace portion, even if powder is generated due to vibration and rubbing between the partitioning member and another member (basic member), the powder can be collected by the recess. Thereby, it is possible to prevent the generated powder from entering the game area and affecting the movement (game) of the game ball or deteriorating the appearance of the gaming machine.

[0043] Means 9: In the configuration of Means 1, The gaming machine is, The pachinko machine is characterized in that a winning port into which a game ball can enter is provided in the game area, and a predetermined privilege is given when the game ball enters the winning port.

[0044] Here, the "winning port" includes "general winning port that is always open in the game area", "starting winning port (starting port) that is always open in the game area and in which a lottery of special symbols is conducted to determine whether a favorable gaming state advantageous to the player is generated as a predetermined privilege when the game ball enters", "variable winning port (variable starting port, accessory winning port, etc.) in which the game ball can enter as a predetermined privilege in the game area when the game ball enters a specific receiving port (chucker) in the game area", "variable winning port (variable starting port, accessory winning port, etc.) in which the game ball can enter as a predetermined privilege according to the lottery result of normal symbols when the game ball passes through a specific area (gate, through chucker, etc.) in the game area", "variable starting winning port (variable starting port) in which the game ball can enter as a predetermined privilege according to the lottery result of normal symbols when the game ball passes through a specific area (e.g., gate, chucker, etc.) in the game area, and in which a lottery of special symbols is conducted to determine whether a favorable gaming state advantageous to the player is generated as a predetermined privilege when the game ball enters", "V winning port in which when the game ball that has entered the accessory winning port is distributed and enters by the distribution means, a favorable gaming state advantageous to the player is generated as a predetermined privilege", "large winning port or accessory winning port that opens and closes in a predetermined pattern and allows the game ball to enter as a favorable gaming state advantageous to the player as a predetermined privilege", etc.

[0045] In addition, as the "pachinko machine", there is "a lottery means for conducting a special symbol lottery to generate an advantageous gaming state in which the player is advantaged as a predetermined privilege by the entry of a gaming ball into the start port, and a special symbol is variably displayed according to the lottery result of the special symbol lottery by the lottery means and then stopped and displayed, and a special lottery result display means as a display for displaying the special lottery result selected by the combination of the stopped and displayed special symbols, and when a special lottery result that generates an advantageous gaming state is displayed by the special lottery result display means, an advantageous gaming state generation means for opening and closing the big winning port in a predetermined pattern to generate an advantageous gaming state (so-called digital pachinko machine)", "a distribution means for distributing the gaming balls that have entered the accessory winning port, and an advantageous gaming state generation means for opening and closing the accessory winning port in a predetermined pattern as a predetermined privilege when the gaming balls distributed by the distribution means enter the V winning port to generate an advantageous gaming state in which the player is advantaged (so-called winged machine)", "a machine having a big winning port and an accessory winning port, opening and closing the big winning port or the accessory winning port in a predetermined pattern according to the lottery result of the special symbol lottery selected by the entry of a gaming ball into the start port (start entry), and when the gaming balls that have entered the accessory winning port are distributed to the V winning port, opening and closing the accessory winning port or the big winning port in a predetermined pattern as a predetermined privilege to generate an advantageous gaming state in which the player is advantaged, and having an advantageous gaming state generation means (so-called composite machine)", and the like.

[0046] According to the configuration of means 9, the gaming machine is a pachinko machine provided with a winning port into which a gaming ball can enter the gaming area, and a predetermined privilege is given by the entry of the gaming ball into the winning port. Thereby, in the pachinko machine, any of the above-described means can exhibit its operational effect.

Effects of the Invention

[0047] Thus, according to the present invention, More convenient than conventional ones a gaming machine can be provided.

Brief Description of the Drawings

[0048]

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Embodiments for Carrying Out the Invention

[0049] [1. Overall Structure of Pachinko Machine] The pachinko machine 1 according to an embodiment of the present invention will be described in detail with reference to the drawings. First, the overall configuration of the pachinko machine 1 of this embodiment will be described with reference to FIGS. 1 to 7. FIG. 1 is a front view of a pachinko machine according to an embodiment of the present invention. FIG. 2 is a front perspective view of the pachinko machine shown in a state where the upper side is tilted forward. FIG. 3 is a perspective view of the pachinko machine seen from the front, and FIG. 4 is a rear view of the pachinko machine. FIG. 5 is a perspective view showing a state where a door frame, a main body frame, and an outer frame constituting the pachinko machine are each rotated by a hinge and opened. FIG. 6 is an exploded perspective view of the pachinko machine disassembled by main components and seen from the front, and FIG. 7 is an exploded perspective view of the pachinko machine disassembled by main components and seen from the back.

[0050] The pachinko machine 1 of this embodiment is installed and used in island facilities in a game hall or the like. In this pachinko machine 1, a large number (for example, 40 to 60) of game balls B are enclosed without being discharged to the outside or supplied from the outside, and circulate inside, so that the player does not touch the game balls B. It is a so-called enclosed game machine or management game machine. In this pachinko machine 1, the number of balls held by the player is digitized and handled as ball-holding data.

[0051] The pachinko balls B enclosed in the pachinko machine 1 have the same diameter (hereinafter also referred to as diameter D, diameter D = 11 mm) as the pachinko balls used in conventional pachinko machines, but are made of non-magnetic stainless steel such as SUS304. As a result, even if the pachinko balls B are enclosed in the pachinko machine 1 for a long time, they will not rust and are distinguishable from the conventional pachinko balls (iron balls SB) that are magnetically attached.

[0052] The pachinko machine 1 of the present embodiment includes a frame-shaped outer frame 2 installed in an island facility (not shown) of a game hall, a door frame 3 that closes the front surface of the outer frame 2 in an openable and closable manner, a main body frame 4 that supports the door frame 3 in an openable and closable manner and is detachably attached to the outer frame 2, and a game board 5 that is detachably attached to the main body frame 4 from the front side and has a game area 5a that is visible from the player side through the door frame 3 and into which the pachinko balls B are driven by the player.

[0053] [2. Outer Frame] The outer frame 2 of the pachinko machine 1 will be mainly described with reference to FIGS. 8 to 16 and the like. FIG. 8 is a front view of the pachinko machine shown with the door frame removed. FIG. 9 is an exploded perspective view shown in a state where the game board is separated from the main body frame in FIG. 8. FIG. 10 is a front view of the pachinko machine shown with the door frame and the game board removed, FIG. 11 is a rear view of the pachinko machine in FIG. 10, and FIG. 12 is a perspective view of the pachinko machine in FIG. 10 seen obliquely from the front. FIG. 13 is an exploded perspective view seen from the front in a state where the outer frame and the main body frame are disassembled, and FIG. 14 is an exploded perspective view seen from the rear in a state where the outer frame and the main body frame are disassembled. FIG. 15 is a plane cross-sectional view obtained by cutting the outer frame at the center in the vertical direction. FIG. 16 is a perspective view showing the lower part of the outer frame.

[0054] The outer frame 2 can be attached to the island equipment of the game hall (not shown), and can be attached to the main body frame 4 so as to be openable, closable, and detachable forward. The outer frame 2 includes an outer frame main body 10 formed in a vertically long frame shape as a whole, an outer frame assembly fitting 20 for assembling the outer frame main body 10, an outer frame hinge mechanism 30 for supporting the main body frame 4 in an openable and closable manner, an outer frame locking fitting (not shown) for locking the main body frame 4 in a closed state, a curtain plate 45 attached to the lower frame body 14 of the outer frame main body 10, and a slip plate 46 attached to the upper surface of the curtain plate 45.

[0055] The outer frame main body 10 of the outer frame 2 includes a left frame body 11 and a right frame body 12 that extend in the vertical direction and are spaced apart left and right, an upper frame body 13 that connects the upper ends of the left frame body 11 and the right frame body 12, and a lower frame body 14 that connects the lower ends of the left frame body 11 and the right frame body 12. The left frame body 11 and the right frame body 12 are each formed of an extruded profile of a metal such as an aluminum alloy. The upper frame body 13 and the lower frame body 14 are formed of wood. The left frame body 11, the right frame body 12, the upper frame body 13, and the lower frame body 14 have the same dimensions in the front-rear direction.

[0056] The outer frame assembly fitting 20 of the outer frame 2 has an upper left fitting that connects the left frame body 11 and the upper frame body 13, an upper right fitting that connects the right frame body 12 and the upper frame body 13, a lower left fitting that connects the left frame body 11 and the lower frame body 14, and a lower right fitting that connects the right frame body 12 and the lower frame body 14. The lower left fitting also serves as the outer frame lower hinge body 35.

[0057] The outer frame hinge mechanism 30 has an outer frame upper hinge body 31 provided at the upper left end of the outer frame main body 10 and an outer frame lower hinge body 35 provided at the lower left end of the outer frame main body 10.

[0058] The upper outer frame hinge body 31 of the outer frame hinge mechanism 30 is attached to the upper surface of the left end of the upper frame body 13, and its front end protrudes forward from the outer frame main body 10. The upper outer frame hinge body 31 has a bearing groove 31a that penetrates vertically and is open on one side at a portion protruding forward from the outer frame main body 10, and a lock member 32 that is provided on the lower surface of the portion protruding forward from the outer frame main body 10 and can open and close the open portion of the bearing groove 31a.

[0059] The bearing groove 31a of the upper outer frame hinge body 31 can support the main body frame hinge shaft 511a of the main body frame upper hinge body 511 in the main body frame 4 by inserting the main body frame hinge shaft 511a into it from the open portion. The lock member 32 of the upper outer frame hinge body 31 is normally in a locked position where the open portion of the bearing groove 31a is closed by the biasing force of an elastic piece (not shown). When the lock member 32 is moved to the release position against the biasing force of the elastic piece, the bearing groove 31a is opened to the side, and the main body frame hinge shaft 511a can be inserted into the bearing groove 31a from the side, or the main body frame hinge shaft 511a inserted into the bearing groove 31a can be removed from the bearing groove 31a.

[0060] The lower outer frame hinge body 35 of the outer frame hinge mechanism 30 is attached to a portion (upper portion) overlapping the lower frame body 14 on the upper surface of the left end of the curtain plate 45, and its front end protrudes forward from the outer frame main body 10. The lower outer frame hinge body 35 has a hinge shaft 35a protruding upward at a portion protruding forward from the outer frame main body 10. By inserting the hinge shaft 35a of the lower outer frame hinge body 35 into the outer frame shaft hole (not shown) of the main body frame lower hinge body 512 in the main body frame 4, the main body frame lower hinge body 512 can be rotatably supported.

[0061] The outer frame hinge mechanism 30 can support the main body frame 4 so that it can be opened and closed by pivotally supporting the main body frame hinge shaft 511a of the main body frame upper hinge body 511 in the main body frame 4 in the bearing groove 31a of the upper outer frame hinge body 31 and inserting the hinge shaft 35a of the lower outer frame hinge body 35 into the outer frame shaft hole of the main body frame lower hinge body 512.

[0062] The outer frame locking fittings of the outer frame 2 are provided in two vertically spaced positions on the inner surface (left side surface) of the right frame body 12. The outer frame locking fittings can lock the main body frame 4 in a non-openable state with respect to the outer frame 2 when the outer frame locking claws 784 of the lock unit 780 in the main body frame 4 are respectively locked thereto.

[0063] The curtain plate 45 of the outer frame 2 is attached to the lower frame body 14, and the front end thereof protrudes forward from the lower frame body 14. The curtain plate 45 is formed of a synthetic resin. The sliding plates 46 are provided in two positions spaced apart left and right on the upper surface of the curtain plate 45. The sliding plates 46 are such that when the main body frame 4 is closed with respect to the outer frame 2, the lower end surface of the main body frame 4 abuts thereon. The sliding plates 46 are formed of a low-friction material with low frictional resistance, facilitating the sliding of the main body frame 4 and making the opening and closing easier.

[0064] More specifically regarding the curtain plate 45, the curtain plate 45 includes a curtain plate main body 45a formed to cover a front-side portion of the upper end surface of the lower frame body 14 in the front-rear direction center and the front end side of the lower frame body 14, a hinge body cover portion 45b provided near the left end of the upper surface of the curtain body main body 45a, a rear wall portion 45c extending upward in a flat plate shape from the rear end of the hinge body cover portion 45b, and a guide display portion 45d provided on the upper surface of the curtain plate main body 45a.

[0065] The hinge body cover portion 45b of the curtain plate 45 is provided so as to cover the lower surface and the side surface of the lower hinge body 35 of the outer frame. Thereby, when a player, an operator such as for maintenance, transportation, installation, etc. reaches their hand near the lower hinge body 35 of the outer frame, it is possible to prevent the hand from directly touching the lower hinge body 35 by the hinge body cover portion 45b, and it is possible to prevent injury by the edge of the lower hinge body 35 of the outer frame.

[0066] Also, since the hinge body cover portion 45b covers the lower surface and the side surface of the lower hinge body 35 of the outer frame, it is possible to hide the lower hinge body 35 of the outer frame from the player side, and at the same time, it is possible to enhance the sense of unity with the curtain plate 45 (curtain plate main body 45a) and improve the appearance.

[0067] When the main body frame 4 is closed with respect to the outer frame 2, the rear wall portion 45c of the shutter plate 45 is provided such that the rear surface of the lower hinge body 512 of the main body frame 4 described later abuts on the front surface of the rear wall portion 45c. Thereby, when the main body frame 4 is closed with respect to the outer frame 2, the lower hinge body 512 of the main body frame abuts on the rear wall portion 45c, so that the main body frame 4 can be restricted from further hinge-rotating rearward.

[0068] As shown in FIGS. 15 and 16 and the like, the guide display portion 45d of the shutter plate 45 is provided so as to protrude rearward from the rear edge of the upper surface of the shutter plate main body 45a, and the left-right direction extends from the rear portion of the left slide plate 46 to the rear portion of the right slide plate 46. On this guide display portion 45d, an arrow pointing leftward is displayed near the left end, an arrow pointing rightward is displayed near the right end, and between the two arrows, the characters "! Prohibition of protrusion of fixing nails and fixing brackets in this range!" are displayed. These arrows and characters are engraved by a mold for injection-molding the shutter plate 45.

[0069] The guide display portion 45d is provided so as not to contact the main body frame 4 which is provided to be openable and closable with respect to the outer frame 2. This guide display portion 45d is for calling the attention of the operator when the pachinko machine 1 is installed in the island facility of the game hall. Specifically, when the lower frame body 14 of the outer frame 2 is fixed to the island facility with mounting screws (not shown), it is for calling attention so that the head of the mounting screw does not protrude above the guide display portion 45d within the range displayed on the guide display portion 45d. By fixing the outer frame 2 with the mounting screws in accordance with this call for attention, when the main body frame 4 is closed with respect to the outer frame 2, the mounting screw does not abut on the main body frame 4 and the mounting screw does not interfere with the main body frame 4.

[0070] According to this guide display portion 45d, it is possible to prevent the mounting screws that fix the outer frame 2 from interfering with the main body frame 4, thereby avoiding damage to the main body frame 4 due to interference of the mounting screws. Also, the guide display portion 45d serves as a mark for the driving depth of the mounting screws for fixing the outer frame 2, so there is no need to drive the mounting screws while opening and closing the main body frame 4 to prevent interference, and the working efficiency can be improved.

[0071] Furthermore, since it has the guide display portion 45d, when checking the fixed state of the outer frame 2 with respect to the island equipment, by using the guide display portion 45d as a reference, the quality of the mounting screws can be easily visually confirmed.

[0072] Also, since the guide display portion 45d indicating the fixing range of the mounting screws is integrally formed with the curtain plate main body 45a, by simply attaching the curtain plate main body 45a to the lower frame body 14 and assembling it to the outer frame 2, the guide display portion 45d can be provided on the outer frame 2, and the cost can be reduced compared to the case of providing the guide display portion 45d separately.

[0073] In the above embodiment, the guide display portion 45d protruding rearward from the rear end of the curtain plate main body 45a is shown as continuously extending in the left - right direction from the left arrow to the right arrow, but it is not limited to this, and a form in which only the parts of the left and right arrows protrude rearward from the rear end of the curtain plate main body 45a may also be acceptable.

[0074] Also, in the above embodiment, the guide display portion 45d is shown to be engraved during injection molding of the curtain plate 45, but it is not limited to this, and the guide display portion 45d may be provided by pasting a sticker, printing, or painting.

[0075] In addition, in the above-described embodiment, the guide display portion 45d is provided on the curtain plate 45, but the present invention is not limited thereto, and it may be provided on the lower frame body 14, the sliding plate 46, or the like. When the guide display portion 45d is provided on the lower frame body 14, for example, a seal may be attached, a stamp may be pressed with ink, or a branding may be pressed. When the guide display portion 45d is provided on the sliding plate 46, for example, a concave engraving may be made on the sliding plate 46.

[0076] [3. Door Frame] The door frame 3 of the pachinko machine 1 will be described with reference to FIGS. 1 to 3 and FIGS. 5 to 7. The door frame 3 is formed in a rectangular shape that is substantially the same size as the inside of the frame of the outer frame 2 and extends vertically in a front view, and is attached to the inside of the frame of the outer frame 2 through the main body frame 4 so as to be openable and closable from the front side. The door frame 3 includes a door frame main body 100 having a game window 101 through which the game area 5a of the game board 5 attached to the main body frame 4 faces forward when the door frame 3 is closed, a transparent glass 120 detachably attached to the rear side of the door frame main body 100 and closing the game window 101, a held ball number display portion 140 for displaying the number of held balls of the player, a handle 160 operated by the player for driving the game ball B into the game area 5a of the game board 5, a cylindrical handle cover 170 surrounding the outer periphery of the handle 160, and a counting button switch 180 operable by the player.

[0077] In addition, the door frame 3 includes a door frame curtain plate 190 extending from the lower end at a certain height across the entire width in the left-right direction on the front surface of the door frame main body 100, a shelf unit 200 protruding forward at a portion between the game window 101 and the door frame curtain plate 190 on the front surface of the door frame main body 100, and an effect operation unit 250 provided at the center in the left-right direction of the shelf unit 200 and operable by the player. The held ball number display portion 140 and the counting button switch 180 are provided on the upper surface of the shelf unit 200 (the upper surface of the shelf portion 201).

[0078] Furthermore, the door frame 3 includes a door frame top unit 300 provided above the game window 101 on the front surface of the door frame body 100, a door frame left side unit 320 provided on the left side of the game window 101 on the front surface of the door frame body 100, and a door frame right side unit 340 provided on the right side of the game window 101 on the front surface of the door frame body 100.

[0079] The door frame body 100 has a door frame hinge mechanism 110 for attachably and detachably mounting to the main body frame 4. The door frame hinge mechanism 110 includes a door frame upper hinge body 111 (see FIG. 6) provided at the upper left end of the door frame body 100 and a door frame lower hinge body 112 provided at the lower left end of the door frame body 100. The door frame upper hinge body 111 has a door frame upper hinge shaft 111a protruding upward. The door frame hinge mechanism 110 can support the door frame 3 so as to be openable and closable with respect to the main body frame 4 by inserting the door frame upper hinge shaft 111a of the door frame upper hinge body 111 downward into a door frame upper shaft hole 511b of a main body frame upper hinge body 511 described later and inserting the door frame lower hinge shaft 112a of the door frame lower hinge body 112 upward into a door frame lower shaft hole 512b of a main body frame lower hinge body 512 described later.

[0080] Further, as shown in FIGS. 5 and 7 and the like, the door frame body 100 has a protrusion 102 that protrudes rearward from near the lower end on the rear surface. When the door frame 3 is closed with respect to the main body frame 4, the lower surface of the protrusion 102 abuts so as to ride on the support step portion 501q of the main body frame base 501 in the main body frame 4 described later, and the door frame 3 can be lifted to some extent. According to this protrusion 102, since the door frame 3 is lifted by closing the door frame 3 with respect to the main body frame 4, the load of the door frame 3 can be dispersed to the protrusion 102 and the lower door frame hinge body 112. As a result, it is possible to avoid excessive load from being continuously applied to the hinges (the lower door frame hinge body 112 and the lower outer frame hinge body 35) that enable the door frame 3 to be opened and closed, and it is possible to make the hinges less likely to be distorted. Even if the hinge is distorted, the protrusion 102 can lift the door frame 3, so that the door frame 3 can be closed at an appropriate position with respect to the main body frame 4. Although not shown, the lower surface of the protrusion 102 has a plurality of ribs extending in the front-rear direction, and the strength and rigidity are enhanced by these ribs.

[0081] The protrusion 102 has a guide surface 102a that is inclined so as to move leftward as it goes rearward. Although details will be described later, when the door frame 3 is about to be closed with respect to the main body frame 4 in a state where the ball milling motor base 686 in the ball lifting unit 650 is in a state other than the locked position, the guide surface 102a of the protrusion 102 contacts the front end of the ball milling motor base 686, and the ball milling motor base 686 can be moved (rotated) to the locked position.

[0082] The number of balls held display unit 140 is composed of six-digit 7-segment LEDs. The number of balls held display unit 140 is provided at a position on the upper surface of the shelf unit 200 that is to the right of the center in the left-right direction and to the left of the counting button switch 180.

[0083] The handle 160 is provided at the lower right corner on the front surface of the door frame body 100, that is, near the right end between the game window 101 and the door frame curtain plate 190 on the front surface of the door frame body 100. The handle 160 is attached so that the player can rotate it with the rotation axis facing the front-rear direction. The handle 160 is formed in a shape similar to that of an automobile steering wheel, and has a central hub portion 160a, a plurality (here, three) of spoke portions 160b extending outward from the hub portion 160a, and an annular ring portion 160c connecting the tips of the spoke portions 160b.

[0084] The ring portion 160c of the handle 160 is provided at a front portion slightly separated from the front end of the cylindrical handle cover 170, and is provided so that the player cannot grip the ring portion 160c. Therefore, when the player rotates the handle 160, mainly, the player operates in a state of gripping the hub portion 160a with the fingers passing through between the spoke portions 160b. In this state, the player's fingers are in a state of being inserted into the cylinder of the handle cover 170.

[0085] The handle 160 is provided with a firing stop switch 161 that can be pressed by the player, a handle touch sensor 162 that detects a change in the capacitance of the handle 160, and a handle rotation sensor 163 that detects the rotation angle of the handle 160 (see FIG. 63).

[0086] When the firing stop switch 161 is pressed by the player, the drive of the firing solenoid 553 is stopped by the frame control board 740. Therefore, when the player presses the firing stop switch 161 during the rotation operation of the handle 160, the firing of the game ball B can be temporarily stopped without returning the rotation operation of the handle 160. After that, if the rotation operation of the handle 160 remains the same and the pressing operation of the firing stop switch 161 is released, the game ball B can be driven into the game area 5a again with the driving strength (the driving strength corresponding to the rotation operation of the handle 160) before the firing stop switch 161 was pressed.

[0087] The handle touch sensor 162 detects static electricity acting on the handle 160. When a player touches the handle 160, it detects the static electricity acting from the player and detects the player's contact (touch) with the handle 160. Then, when the handle 160 is rotated while the handle touch sensor 162 is detecting the player's contact, the detection of the handle rotation sensor 163 is received, and the driving of the firing solenoid is controlled according to the rotation angle of the handle 160, and the game ball B can be driven in.

[0088] Therefore, even if the player tries to rotate the handle 160 by some means without touching the handle 160 and drive the game ball B into the game area 5a, since the handle touch sensor 162 does not detect the player's contact, the firing solenoid 553 is not driven and the game ball B cannot be driven in. As a result, it is possible to prevent the game from being played by rotating the handle 160 in a way different from the original, and it is possible to reduce the load (burden) on the game hall where the pachinko machine 1 is installed.

[0089] The handle rotation sensor 163 is a variable resistor. When the handle 160 is rotated, the detection axis rotates and the internal resistance changes according to the rotation angle of the detection axis. Therefore, when the handle 160 is rotated to change the internal resistance of the handle rotation sensor 163, the driving force of the firing solenoid 553 in the ball firing unit 550 described later changes according to the internal resistance, and the game ball B can be driven into the game area 5a with a strength corresponding to the rotation angle of the handle 160.

[0090] The handle cover 170 extends rearward so that the diameter expands from the rear part of the annular part of the handle 160 and is formed in a conical tube shape. Openings 171 communicating with the inside are provided on the right circumferential surface and the lower circumferential surface of the outer circumferential surface of the handle cover 170. Due to these openings 171, even if dust, liquid, etc. enter the handle cover 170, they can be discharged downward.

[0091] The counting button switch 180 is provided on the top surface of the shelf unit 200, at a position to the right of the center in the left-right direction. The counting button switch 180, which will be described in detail later, is a button that can be pressed when there are balls in hand to send the balls in hand to the game ball lending device 8 for settlement.

[0092] The door frame apron 190 extends left and right at a constant height with a length equal to the left and right width of the door frame main body 100, and is attached to the lower end of the front surface of the door frame main body 100. The door frame apron 190 penetrates from front to back at the center in the left and right direction, and has a duct grill 191 located in front of a bass reflex duct 501e of the main body frame 4, which will be described later. The duct grill 191 extends in an elongated manner left and right, and is partitioned by a number of vertical lattices. The duct grill 191, which will be described in detail later, is intended to release air vibrations (wind) caused by the driving of the main body frame speaker 503 from the bass reflex duct 501e of the main body frame 4 forward.

[0093] The shelf unit 200 is provided in a portion between the game window 101 and the door frame panel 190 on the front side of the door frame main body 100. A spherical performance operation unit 250 is provided in the center of the left-right direction of the shelf unit 200. The shelf unit 200 has a shelf portion 201 that bulges forward in a shelf-like shape from the upper end along the lower end of the game window 101, a speaker grill 203 that is provided below the shelf portion 201 and to the right of the performance operation unit 250, a setting adjustment button 204 that is provided on the upper surface of the shelf portion 201 and consists of four push buttons arranged in a front-rear and left-right direction, and a pair of protrusions 205 that are provided at a distance to the left and right. The setting adjustment button 204 allows the volume to be adjusted by operating the front and rear push buttons out of the four push buttons arranged in a front-rear and left-right direction, and allows the light amount to be adjusted by operating the left and right push buttons.

[0094] The shelf part 201 has a smooth upper surface. On the upper surface of the shelf part 201, on the right side of the center in the left - right direction, a counting button switch 180 is provided near the right end, and a ball - holding number display part 140 is provided on the left side of the counting button switch 180. On the right side of the center in the left - right direction, a setting adjustment button 204 is provided, and protrusions 205 are provided on both the left and right sides near the rear end of the setting adjustment button 204.

[0095] The pair of protrusions 205 protrude higher than the setting adjustment button 204, and the upper ends are rounded. The pair of protrusions 205 are provided substantially parallel to the rear edge of the shelf part 201. The pair of protrusions 205 can be used, for example, to lean a smartphone on the upper surface of the shelf part 201, which is convenient.

[0096] The speaker grill 203 is located in front of the main - body frame speaker 503 in the main - body frame 4 described later, and is formed of a punching metal having a plurality of through - holes. The speaker grill 203 is provided symmetrically and with the same size as the handle 160 with the center in the middle direction of the door frame 3 as the boundary, and is formed in a shape bulging forward similar to the handle cover 170.

[0097] The effect operation unit 250 is provided at the center in the left - right direction in the shelf unit 200. The front end protrudes forward more than the shelf unit 200, and the upper end protrudes upward more than the shelf unit 200. The effect operation unit 250 is formed entirely in a spherical shape. The effect operation unit 250 has a circular first effect button 251 provided near the center on the upper surface, and an annular second effect button 252 provided so as to surround the first effect button 251. Although detailed illustration is omitted, the first effect button 251 is formed in a columnar shape, and the second effect button 252 is formed in a cylindrical shape. The first effect button 251 and the second effect button 252 are provided coaxially, and their axis is inclined so as to move forward as it goes upward.

[0098] The first effect button 251 and the second effect button 252 are provided so as to move upward (pop up) as a whole according to the player-participation type effect. The first effect button 251 can be pressed at all times, while the second effect button 252 can be pressed only when it has popped up.

[0099] Although not shown in the drawings, a vibrator (vibration device) is provided inside the first effect button 251.

[0100] The door frame top unit 300 is provided at a position above the game window 101 on the front surface of the door frame body 100 such that both left and right ends in the horizontal direction are sandwiched between the upper end portions of the door frame left side unit 320 and the door frame right side unit 340. The door frame top unit 300 protrudes forward like an eaves. The door frame top unit 300 includes a semi-tube-shaped door frame top decorative body 301 that extends left and right along the front edge and has translucency. The door frame top decorative body 301 is curved in the front-rear direction such that the center in the left-right direction is located most forward in plan view.

[0101] The door frame top unit 300, although not shown in the drawings, has a door frame top decorative substrate on which a plurality of LEDs for illuminating and decorating the door frame top decorative body 301 are mounted, a pair of door frame top speakers 303 that output sounds such as voices, music, and sound effects and are provided spaced apart left and right, and a pair of door frame top side speakers 304 that are provided on both left and right outer sides of the pair of door frame top speakers 303. The pair of door frame top speakers 303 are full-range speakers (or mid-range speakers), and the pair of door frame top side speakers 304 are tweeters (high-frequency speakers).

[0102] The door frame left side unit 320 is provided vertically long from near the upper end of the door frame body 100 to near the speaker grill 203 below the shelf portion 201 of the shelf unit 200 at a position on the front surface of the door frame body 100 to the left of the game window 101. The door frame left side unit 320 extends over the entire vertical length and includes a semi-tube-shaped door frame left side decorative body 321 having translucency. The lower end vicinity of the door frame left side decorative body 321 is curved to the right.

[0103] Although not shown in the figure, the door frame left side unit 320 has a door frame left side decorative substrate on which a plurality of LEDs for illuminating the door frame left side decorative body 321 are mounted.

[0104] The door frame right side unit 340 is provided vertically long from near the upper end of the door frame body 100 to the handle cover 170 below the shelf portion 201 of the shelf unit 200 at a position on the front surface of the door frame body 100 to the right of the game window 101. The door frame right side unit 340 protrudes longer forward than the door frame left side unit 320 and is formed in a vertically long partition shape.

[0105] The door frame right side unit 340 includes a semi-tube-shaped door frame right side decorative body 341 that extends vertically along the front end and has translucency, a door frame right side left side decorative body (not shown in the figure) that is provided behind the door frame right side decorative body 341 and forms the left side surface and has translucency, a door frame right side right side decorative body (not shown in the figure) that is provided behind the door frame right side decorative body 341 and forms the right side surface and has translucency, and a door frame right side decorative substrate (not shown in the figure) on which a plurality of LEDs for illuminating the door frame right side decorative body 341, the door frame right side left side decorative body, and the door frame right side right side decorative body are mounted. The lower end vicinity of the door frame right side decorative body 341 is curved to the left.

[0106] Also, the door frame right side unit 340 has an opening 342 that penetrates front and back near the lower end and faces forward the keyhole 782 of the lock unit 780.

[0107] [3-1. Counting Button Switch] The counting button switch 180 is provided at a position on the upper surface of the shelf unit 200 that is to the right of the center in the left-right direction. The counting button switch 180 can send the held balls to the game ball lending device 8 for settlement by pressing the button when there are held balls (the number of held balls > 0). Although details will be described later, the counting button switch 180 can send the held balls one by one or in predetermined numbers (for example, every 250 balls) according to the pressing time. The number of held balls sent to the game ball lending device 8 is sent to the management server 9 via the communication network, and an IC card storing the number of the held balls is discharged from the game ball lending device 8.

[0108] Here, the game ball lending device 8 is provided adjacent to the pachinko machine 1 in the island facility of the game hall (also referred to as a stand). Although not shown in detail, the game ball lending device 8 is provided with an insertion slot for inserting cash, prepaid cards, etc., a card slot for inserting / ejecting an IC card, a ball lending button switch 8a, a return button switch, a display unit for displaying the inserted amount, the counted number of balls, etc. When the ball lending button switch 8a is pressed while cash or the like is inserted into the insertion slot, a predetermined number of game balls B are lent out within the range of the inserted amount. In the present embodiment, the number of lent game balls B is transmitted to the frame control board as digital data and is also transmitted to the management server 9 via the communication network for management.

[0109] Regarding the counting button switch 180, when the player "short-presses" (for example, the pressing time for one time is less than 500 ms) the counting button switch 180 while there are balls in hand, one game ball B is counted from the balls in hand. When the counting button switch 180 is "long-pressed" (for example, the pressing time for one time is 500 ms or more), until the number of balls in hand becomes less than 250, game balls B are counted 250 at a time at the counting notification timing every predetermined time (for example, 300 ms) during the long press. When the number of balls in hand becomes 250 or less during the long press, game balls B are counted one by one. Also, when the counting button switch 180 is "long-pressed" (for example, the pressing time for one time is 500 ms or more), even if the counting button switch 180 is not continuously pressed, it may be configured to unconditionally count all the balls in hand.

[0110] When counted by the pressing operation of the counting button switch 180, the number of balls in hand displayed on the number-of-balls-in-hand display unit 140 is subtracted and displayed, and the number of counted balls is displayed on a display unit (not shown) of the game ball lending device 8.

[0111] [4. Main body frame] The main body frame 4 of the pachinko machine 1 will be described in detail with reference to FIGS. 8 to 14, FIGS. 17 to 21, etc. FIG. 17 is an exploded perspective view of the main body frame disassembled by each main component and viewed from the front, and FIG. 18 is an exploded perspective view of the main body frame disassembled by each main component and viewed from the rear. FIG. 19 is a plan view of the pachinko machine in FIG. 10 cut at the upper and lower centers. FIG. 20 is a cross-sectional view taken along line A-A in FIG. 19. FIG. 21 is a front view of the main part showing the firing unit and the far unit, etc. in cross-section in the front view of FIG. 8.

[0112] The main body frame 4 is formed in a box frame shape with the front open, and the game board 5 is detachably accommodated inside from the front. The main body frame 4 is openably attached to a frame-shaped outer frame 2 that is attached to the island equipment in the game hall at the upper and lower parts of the front left side end, and a door frame 3 is openably attached so that the open front side is closed.

[0113] The main body frame 4 includes a frame-shaped main body frame base unit 500 that is supported by the outer frame 2 so as to be openable and closable, a ball launching unit 550 for driving a game ball B into the game area 5a of the game board 5, a far unit 570 for collecting the game ball B that has not been driven into the game area 5a despite being launched by the ball launching unit 550, a circulating ball path unit 600 for sending the game ball B discharged from the game board 5 and the game ball B collected by the far unit 570 to the ball launching unit 550 side, a ball lifting unit 650 for moving the game ball B upward from the downstream end of the circulating ball path unit 600, and a ball feeding unit 700 for sending the game ball B lifted by the ball lifting unit 650 to the ball launching unit 550 one by one.

[0114] Further, the main body frame 4 includes a ball receiving tray 720 for receiving the game ball B discharged from the ball outlet 613p of the circulating ball path unit 600, a frame board unit 730 having a frame control board 740 for controlling the ball launching unit 550, the ball lifting unit 650, etc., and a locking unit 780 for locking between the outer frame 2 and the main body frame 4 and between the door frame 3 and the main body frame 4.

[0115] [4-1. Main Body Frame Base Unit] Regarding the main body frame base unit 500 in the main body frame 4, it will be described in detail mainly with reference to FIGS. 22 to 24 and the like. FIG. 22 is an exploded perspective view of the main body frame base unit in the main body frame as seen from the front with each main component disassembled, and FIG. 23 is an exploded perspective view of the main body frame base unit in the main body frame as seen from the rear with each main component disassembled. FIG. 24(a) is a front view of the main body frame base in the main body frame base unit, and (b) is an explanatory view showing a state in which a plurality of main body frames are stacked in a perspective view.

[0116] The main body frame base unit 500 is supported so as to be openable and closable forward with respect to the outer frame 2, and can support the door frame 3 so as to be openable and closable forward. The main body frame base unit 500 is equipped with a ball launching unit 550, a fairing unit 570, a circulating ball path unit 600, a ball lifting unit 650, a ball feeding unit 700, a ball receiving tray 720, a frame substrate unit 730, a lock unit 780, etc.

[0117] The main body frame base unit 500 has a main body frame base 501 that penetrates from front to back and into which the game board 5 is inserted from the front, and a base wall portion 501b provided below the game board insertion portion 502, and the whole is formed in a vertically long rectangular shape, and a side surface reinforcing plate 509 that reinforces the left side surface of the main body frame base 501.

[0118] In addition, the main body frame base unit 500 includes a main body frame speaker 503 attached to the rear side of the base wall portion 501b in the main body frame base 501, a box-shaped main body frame speaker box 504 attached to the base wall portion 501b so as to cover the main body frame speaker 503 from the rear and having a front side that is open, and a back cover 505 provided so as to be openable and closable from the rear for the game board insertion portion 502 in the main body frame base 501.

[0119] Furthermore, the main body frame base unit 500 includes a game board lock member 506 attached to the main body frame base 501, a door opening switch 507 and a frame opening switch 508 attached to the main body frame base 501, and a main body frame hinge mechanism 510 attached to the main body frame base 501.

[0120] The main body frame base 501 is formed in a vertically long rectangular shape when viewed from the front. The main body frame base 501 is formed of a black opaque synthetic resin. The main body frame base 501 includes a frame-shaped body 501a without a left side, a game board insertion portion 502 that penetrates back and forth within the frame of the body 501a in the range of about 2 / 3 of the total height from near the upper end downward, a base wall portion 501b provided below the game board insertion portion 502, a game board regulating portion 501c that protrudes upward (into the game board insertion portion 502) near the center in the left-right direction on the upper end surface of the base wall portion 501b, a main body frame speaker opening 501d that penetrates back and forth near the left end of the base wall portion 501b and faces forward with the main body frame speaker 503, and a bass reflex duct 501e that is horizontally long and penetrates back and forth near the lower end at the center in the left-right direction on the base wall portion 501b.

[0121] Further, the main body frame base 501 includes a tray insertion recess 501f that is recessed from the front side to the rear above the bass reflex duct 501e on the base wall portion 501b and into which the ball receiving tray 720 is inserted, and a ball storage passage insertion opening 501g that penetrates back and forth above the tray insertion recess 501f on the base wall portion 501b and into which the ball meandering member 613 and the meandering cover 614 of the circulating ball path unit 600 are inserted.

[0122] Further, the main body frame base 501 includes a far unit mounting portion 501h and a ball launch unit mounting portion 501i that are provided side by side left and right above the ball storage passage insertion opening 501g on the front surface of the base wall portion 501b, a ball lifting unit mounting portion 501j that is provided to the right of the ball launch unit mounting portion 501i on the base wall portion 501b, a ball feeding unit mounting portion 501k that is provided at a position behind the ball launch unit mounting portion 501i on the rear surface of the base wall portion 501b, a circulating ball path unit mounting portion 501l that is provided on the rear surface of the base wall portion 501b, and a cylinder insertion opening 501m that penetrates back and forth near the upper right corner of the base wall portion 501b and through which the cylinder 781 of the lock unit 780 is inserted.

[0123] Furthermore, the main body frame base 501 protrudes from the left and right inner walls in the tray insertion recess 501f, and is provided with a locking claw 501n for restricting the forward movement of the ball receiving tray 720 by locking the elastic claws 721 of the ball receiving tray 720 inserted into the tray insertion recess 501f. Also, the main body frame base 501 is provided with a vertically long opening 501o that penetrates front and back at the part of the ball lifting unit attachment portion 501j.

[0124] Also, the main body frame base 501 includes an upper surface cover 502a that extends rearward from the upper end of the game board insertion portion 502, a rear surface cover 502b that extends downward in a short flat plate shape from the rear end side of the upper surface cover 502a, a left side surface cover 502c that extends rearward from the left end of the game board insertion portion 502 and whose upper end is connected to the upper surface cover 502a, a right side surface cover 502d that extends rearward from the right end of the game board insertion portion 502 and whose upper end is connected to the upper surface cover 502a, and a lower surface cover 502e that extends rearward from the lower end of the game board insertion portion 502.

[0125] Also, the main body frame base 501 includes a plurality of ventilation holes 502f that penetrate the rear surface cover 502b, a plurality of upper surface recesses 502g provided in the upper surface cover 502a and recessed downward, a plurality of lower surface recesses 502h provided in the lower surface cover 502e and recessed downward, and a plurality of reinforcing ribs 502i provided on the lower surface of the upper surface cover 502a and the upper surface of the lower surface cover 502e, respectively.

[0126] Furthermore, the main body frame base 501 is provided above the ball launch unit attachment portion 501i, and further includes a shade portion 501p for blocking the incidence of light from above to the ball launch unit 550. This shade portion 501p can block external light from the emission subtraction sensor 554 composed of a photosensor of the ball launch unit 550 attached to the ball launch unit attachment portion 501i, and can prevent false detection by the emission subtraction sensor 554.

[0127] Further, the main body frame base 501 is provided with a support step portion 501q at a position between the tray insertion recess 501f and the opening 501o, at a position slightly above the bottom surface of the tray insertion recess 501f, and a pair of support protrusions 501r that are vertically spaced apart and protrude rearward in the vicinity of the right end on the rear surface of the base wall portion 501b. The support step portion 501q has an upward-facing surface (upper surface). When the door frame 3 is closed with respect to the main body frame 4, the protrusion 102 of the door frame 3 abuts on the support step portion 501q so as to ride up, and the door frame 3 can be lifted to some extent, and a part of the load of the door frame 3 is supported. A locking hole for locking the nail latch 774 of the frame substrate unit 730 is provided on the rear end surface of the support protrusion 501r.

[0128] The game board insertion portion 502 of the main body frame base 501 is configured such that the game board 5 can be detachably inserted from the front. The periphery of the portion behind the base wall portion 501b of the game board insertion portion 502 is surrounded by an upper surface cover 502a, a left side surface cover 502c, a right side surface cover 502d, and a lower surface cover 502e.

[0129] The game board 5 is placed on the upper end surface of the base wall portion 501b. A door open switch 507, a ball launch unit 550, a fair unit 570, and a ball receiving tray 720 are attached to the front surface of the base wall portion 501b. Further, a main body frame speaker 503, a main body frame speaker box 504, a frame open switch 508, a circulating ball path unit 600, a ball lifting unit 650, and a ball feeding unit 700 are attached to the rear surface of the base wall portion 501b.

[0130] The game board regulating portion 501c regulates the movement of the game board 5 in the left-right direction and rearward when the game board 5 is inserted into the game board insertion portion 502. As shown in the figure, the main body frame speaker opening 501d is formed in a lattice shape and is provided so as to be located behind the speaker grill 203 of the door frame 3 in a state where the door frame 3 is closed with respect to the main body frame 4. The main body frame speaker 503 is attached to the rear surface of the base wall portion 501b so as to close the main body frame speaker opening 501d from the rear.

[0131] The bass reflex duct 501e is formed in a rectangular cylindrical shape that is long in the left - right direction. Although details will be described later, the bass reflex duct 501e communicates with the enclosure 504a of the main - frame speaker 503 composed of the base wall portion 501b and the main - frame speaker box 504, and is for reversing the phase of the sound output from the main - frame speaker 503 to the rear and emitting it forward. In this embodiment, with the cylindrical bass reflex duct 501e, it is possible to resonate and amplify the low - frequency range of the sound output from the main - frame speaker 503 to make a more heavy - bass sound resonate. This bass reflex duct 501e is provided so as to be located behind the duct grill 191 of the door frame 3 in a state where the door frame 3 is closed with respect to the main - frame 4.

[0132] The tray insertion recess 501f can detachably support the ball receiving tray 720 from the front. The bottom wall of the tray insertion recess 501f is inclined so that the front - end side is lower (see Fig. 20). Thereby, even if the game ball B spills into the tray insertion recess 501f in a state where the ball receiving tray 720 is not inserted into the tray insertion recess 501f, it can be discharged forward. Also, since the bottom wall of the tray insertion recess 501f is inclined so that the front - end side is lower, it is easy to slide the placed ball receiving tray 720 forward.

[0133] The ball storage passage insertion port 501g is provided so that the front - side portions of the ball meandering member 613 and the meandering cover 614 of the circulating ball path unit 600 attached to the rear surface of the base wall portion 501b penetrate and project forward. The fur unit attachment portion 501h is provided on the right side of the main - frame speaker opening 501d near the upper end of the base wall portion 501b. The ball launch unit attachment portion 501i is provided on the right side of the fur unit attachment portion 501h. The ball lift unit attachment portion 501j is provided at a position between near the upper end and near the lower end of the base wall portion 501b.

[0134] The ball delivery unit mounting portion 501k is provided on the rear surface of the base wall portion 501b such that the upper surface of the ball delivery unit 700 faces upward (inside the game board insertion portion 502), and is provided so that the ball delivery unit 700 can be attached and detached from above. When the ball delivery unit 700 is attached to the ball delivery unit mounting portion 501k, the elastic claws 709b of the ball delivery unit 700 face forward through the locking holes of the base wall portion 501b on the right side of the ball launching unit 550. In this state, when the elastic claws 709b are pressed rearward to be elastically deformed and the knob portion 709a provided on the upper surface of the ball delivery unit 700 is pinched and pulled upward, the ball delivery unit 700 can be removed upward.

[0135] The circulating ball path unit mounting portion 501l is provided at a position above the box extension portion 504c of the main body frame speaker box 504, which will be described later, in the central portion in the left-right direction on the rear surface of the base wall portion 501b. The cylinder insertion port 501m is provided near the upper end of the base wall portion 501b and to the right of the ball lifting unit mounting portion 501j.

[0136] The upper cover 502a extends rearward from the game board 5 in a state where the game board 5 is mounted on the game board insertion portion 502. As shown in FIGS. 17 and 18 and the like, two upper surface recesses 502g are provided on the upper cover 502a so as to be separated from each other left and right, and a part of the reinforcing rib is omitted from the upper cover 502a by the upper surface recesses 502g. By configuring in this way, it becomes possible to position the upper cover 502a upward by the amount of the reinforcing rib compared to the case where a plurality of reinforcing ribs are arranged in the left-right direction on the upper surface of the upper cover, and the internal volume of the game board insertion portion 502 is ensured. Further, if a plurality of reinforcing ribs are provided on the upper surface of the upper cover, wiping residue will occur during cleaning and the aesthetics will be impaired. However, in the present embodiment, the aesthetics can be maintained by eliminating the reinforcing ribs and the like from the upper surface of the upper cover 502a.

[0137] The upper surface of the upper cover 502a and the bottom surfaces of the two upper surface recesses 502g are inclined so as to be about 2 degrees lower towards the rear with respect to the horizontal plane. Further, the pachinko machine 1 is usually installed so as to tilt rearward, and the angle is generally about 0.75 degrees rearward tilt, so that the total is a downward slope of about 2.75 degrees. Also, the two upper surface recesses 502g are wider towards the rear in terms of the left - right width.

[0138] By making such gentle slopes, the game ball B falling from above the pachinko machine 1 flows down the upper surface of the upper cover 502a or the upper surface recess 502g and falls into the collection path of the game ball B of the island equipment provided below the pachinko machine 1 and is collected. Also, falling objects such as metal powder and non - spherical objects such as screws stay on the upper surface of the upper cover 502a or the upper surface recess 502g. To achieve such an effect, the inclination of the upper surface of the upper cover 502a from the horizontal plane is desirably within 15 degrees.

[0139] Since the upper cover 502a is formed in a flat plate shape, the lower surfaces (rear surfaces) of the two upper surface recesses 502g that are recessed from above in the upper cover 502a protrude downward from the lower surface of the upper cover 502a (see Fig. 24(b)). That is, the upper surface recess 502g is in the form of a convex portion protruding downward on the lower surface of the upper cover 502a. And the end points, that is, the front walls of the two upper surface recesses 502g are the back of the contact surface 502j, and the contact surface 502j is in contact with the rear surface of the upper side of the game board 5 for positioning.

[0140] In other words, on the back side (lower surface side) of the upper cover 502a, there are the back sides of the two upper surface recesses 502g. The tips (front ends) of the back sides of the two upper surface recesses 502g serve as the contact surface 502j and are in contact with the rear surface of the upper side of the game board 5 to position the game board 5.

[0141] On the back side (lower surface side) of the upper cover 502a, there are four reinforcing ribs 502i among a plurality of reinforcing ribs 502i, which reinforce the upper cover 502a in combination with the upper concave portion 502g. By providing the reinforcing ribs 502i on the inner lower surface rather than the upper surface of the upper cover 502a in this way, it becomes possible to maintain the aesthetic appearance of the upper surface (outer surface) of the upper cover 502a.

[0142] In addition, as shown in FIG. 23, a plurality of ribs 502k are provided at the front end of the upper surface of the upper cover 502a. However, the upper part of these ribs 502k is covered by the frame body 501a at the edge of the main body frame base 501, and further, the upper part is covered by the outer frame 2. Therefore, metal powder or the like does not fall from above, and the aesthetic appearance is not affected.

[0143] Furthermore, although not shown in the figure, gates for feeding molten resin during injection molding are not provided on the upper surface or the upper concave portion 502g of the upper cover 502a. This is because the unevenness caused by the gates does not prevent the flow of the game balls B flowing down on the upper surface or the upper concave portion 502g of the upper cover 502a.

[0144] Also, consideration is given so as not to provide marks of ejector pins for taking out the main body frame base 501 injection-molded in the same manner on the upper surface or the upper concave portion 502g of the upper cover 502a. Usually, the marks of the ejector pins are less likely to prevent the flow of the game balls B by appropriately processing the burrs, but there is a possibility of damaging the aesthetic appearance when cleaning the upper surface or the upper concave portion 502g of the upper cover 502a where metal powder or the like has accumulated. For this reason, consideration is given so as not to provide marks of the ejector pins.

[0145] The rear cover 502b of the main body frame base 501 is connected at both left and right ends to the left side cover 502c and the right side cover 502d, respectively. A plurality of ventilation holes 502f in the shape of vertically long slits are arranged in a row in the left-right direction on the rear cover 502b.

[0146] In addition, the left side cover 502c on the main body frame base 501 has the same depth in the front-rear direction as the depth of the upper cover 502a. The left side cover 502c is inclined so as to move rightward as it goes rearward in a plan view. At the rear end of the left side cover 502c, two cover locking portions 502l for locking the back cover 505 are provided at vertically spaced positions.

[0147] The right side cover 502d of the main body frame base 501 is inclined so as to move leftward as it goes rearward in a plan view. The lower part of the right side cover 502d than the rear cover 502b is cut out from the rear end toward the front, and the rear end of the said part is located in front of the rear end of the upper cover 502a. That is, the depth of the part of the right side cover 502d lower than the rear cover 502b is formed shorter. At the part of the rear end of the right side cover 502d lower than the rear cover 502b, a plurality of cover shaft support portions 502m for rotatably supporting the back cover 505 are provided at intervals in the vertical direction.

[0148] The lower cover 502e of the main body frame base 501 extends rearward from a portion that is one step higher than the lower end of the game board insertion portion 502 (the upper surface of the base wall portion 501b). The lower cover 502e is provided so as to exclude the portion above the circulating ball path unit attachment portion 501l. In the portion on the left side of the circulating ball path unit attachment portion 501l, it extends rearward to the same position as the rear end of the left side cover 502c. In the portion on the right side of the circulating ball path unit attachment portion 501l, it extends rearward to the same position as the rear end of the portion where the depth of the right side cover 502d is formed shorter. This lower cover 502e is inclined so as to become higher as it goes rearward.

[0149] The lower surface recess 502h of the main body frame base 501 is recessed downward from the upper surface of the lower cover 502e. The lower surface recess 502h is open toward the front and is formed such that the left and right widths become narrower toward the rear. The bottom surface of the lower surface recess 502h is inclined to become higher toward the rear, similar to the lower cover 502e. Since the lower cover 502e is formed in a flat plate shape, the lower surface (back surface) of the lower surface recess 502h that is recessed from above in the lower cover 502e protrudes downward from the lower surface of the lower cover 502e. Refer to Fig. 24(b). That is, the lower surface recess 502h forms a convex portion protruding downward on the lower surface of the lower cover 502e. A reinforcing rib 502i is provided inside the lower surface recess 502h.

[0150] The plurality of reinforcing ribs 502i are respectively provided on the lower surface of the upper cover 502a and the bottom surface of the lower surface recess 502h. Four reinforcing ribs 502i are provided on the upper cover 502a. Two of them are provided so as to extend forward from the two butting surfaces 502j respectively, and the remaining two are provided at positions on both the left and right outer sides of the two upper surface recesses 502g. The reinforcing ribs 502i provided on both the left and right outer sides of the upper surface recess 502g have their rear ends connected to the rear cover 502b and extend forward shorter than the upper surface recess 502g.

[0151] Of the plurality of reinforcing ribs 502i, a total of four ribs, namely, two ribs on both the left and right outer sides of the upper surface concave portion 502g in the upper surface cover 502a and two ribs respectively provided in the two lower surface concave portions 502h, are provided so as to function as ribs. More specifically, when the main body frame base 501 of the present embodiment is placed on a workbench or the like with the front end side facing down, it is configured to be placed horizontally without rattling. Further, as shown in FIG. 24(b), the main body frame base 501 is formed so that it can be stored in a stacked manner. At this time, by the abutment of the four reinforcing ribs 502i as ribs against the counterpart side, it is possible to avoid the meshing of the stacked main body frame bases 501 with each other. Thereby, it is possible to reduce the time required to remove the components (main body frame bases 501) from meshing with each other, and the efficiency of the assembly work can be improved. In addition, since the main body frame base 501 can be stacked, an increase in the number of packages, a reduction in the size of the packing box, etc. are possible.

[0152] According to the main body frame base 501 of the present embodiment, in the upper surface cover 502a of the main body frame base 501 that protects the game board 5 stored in the main body frame 4 from above, since the upper surface is a gently sloping surface that slopes downward to the rear, it is possible to appropriately handle the game balls B, metal powder, screws, etc. that fall from above the pachinko machine 1. Specifically, with respect to the spherical game balls B, since the upper surface of the upper surface cover 502a allows the game balls B to flow down and fall under the pachinko machine 1, the game balls B can be recovered as they are without causing trouble. In addition, non-spherical objects such as metal powder and screws can be retained on the upper surface cover 502a without flowing down, so trouble is not caused either.

[0153] Further, no ventilation holes 502f are provided on the upper surface of this upper surface cover 502a. This prevents the intrusion of metal powder, screws, etc. from the ventilation holes 502f and does not adversely affect the electrical components of the game board 5.

[0154] Furthermore, no gates for injecting the molten resin for molding into the mold are provided on the upper surface of the upper surface cover 502a formed by an injection molding machine. Thereby, no unevenness derived from the gate is generated on the upper surface of the upper surface cover 502a, so that the flow-down of the game balls B is not hindered.

[0155] Similarly, consideration is given to avoid leaving ejector pin marks when removing the injection-molded main body frame base 501 from the mold. Usually, ejector pin marks are less likely to prevent the flow of the game ball B by appropriately processing burrs. However, when cleaning the upper surface of the upper cover 502a where metal powder or the like has accumulated, it may remain in the ejector pin marks, which may impair the appearance. Therefore, by not providing ejector pin marks, the appearance can be easily restored by cleaning.

[0156] Also, this upper cover 502a is integrally molded with the main body frame base 501. By molding in this way, it is possible to save assembly man-hours and improve the strength of the entire main body frame base unit 500 (game board housing frame).

[0157] And the upper cover 502a not only protects the game board 5 housed inside on its upper surface, but also has a positioning portion (contact surface 502j) that contacts the game board 5 on the inside to position the game board 5. Thereby, the positional relationship between the game board 5 and the upper cover 502a is fixed, and the purpose of the game board housing frame (main body frame 4) of protecting the game board 5 can be achieved.

[0158] Also, as shown in FIG. 18 and the like, ribs for reinforcement are not provided on the upper surface of the upper cover 502a. Thereby, cleaning is not made difficult by the ribs, and maintenance becomes easier. Note that there are other members (for example, the frame body 501a, the outer frame 2, etc.) that cover the upper surface of the upper cover 502a, and ribs may be provided in a portion where foreign matter does not fall.

[0159] The side reinforcement plate 509 is formed in a U-shaped shape that is open to the right in a plan view, and is attached so as to replace the left side of the frame body 501a in the main body frame base 501 that is open. The side reinforcement plate 509 is formed of an extruded metal material such as an aluminum alloy. The side reinforcement plate 509 is provided with two left position regulating members 509a spaced apart vertically. The left position regulating member 509a is for positioning the left side of the game board 5.

[0160] The main body frame speaker 503 is attached to the rear side of the base wall portion 501b so as to close the main body frame speaker opening 501d of the main body frame base 501 from the rear. The main body frame speaker 503 is a cone-type speaker that mainly outputs bass.

[0161] The main body frame speaker box 504 is formed in a box shape that is open to the front, and is attached to the rear side of the base wall portion 501b so as to cover the main body frame speaker 503 from the rear. The main body frame speaker box 504 forms an enclosure 504a for the main body frame speaker 503 by being attached to the base wall portion 501b.

[0162] The main body frame speaker box 504 has a box main body portion 504b located behind the main body frame speaker 503, a box extension portion 504c connected to the lower end of the box main body portion 504b and extending to the right in a front view, and a frame substrate unit shaft support portion 504d provided on the rear surface of the box main body portion 504b. The box extension portion 504c of the main body frame speaker box 504 extends to the right up to near the right end of the main body frame base 501 so as to cover the rear of the bass reflex duct 501e, and a part thereof extends rearward from the box main body portion 504b.

[0163] The enclosure 504a is composed of the box main body portion 504b and the box extension portion 504c, and communicates with the outside through the bass reflex duct 501e. That is, the bass reflex duct 501e, the main body frame speaker 503, and the main body frame speaker box 504 constitute a bass reflex type speaker of the phase inversion type.

[0164] Specifically, a predetermined sound is output from the main body frame speaker 503 to the front and the rear. The sound output from the main body frame speaker 503 to the front is emitted to the front of the pachinko machine 1 through the main body frame speaker opening 501d and the speaker grill 203.

[0165] On one hand, the sound output rearward from the main body frame speaker 503 causes the air inside the main body frame speaker box 504 (enclosure 504a) to vibrate. And since this enclosure 504a is open to the front (outside) by the cylindrical bass reflex duct 501e, it will be emitted forward from the bass reflex duct 501e. At this time, since the bass reflex duct 501e is formed in a cylindrical shape with a predetermined length, in its interior, the low frequency range is amplified due to resonance caused by air column vibration, and it is emitted forward in a state where the phase is inverted.

[0166] As a result, the sound output forward from the main body frame speaker 503 and the sound output rearward do not act so as to cancel each other out and attenuate, but rather act so as to resonate with each other and amplify. Thus, even if the diameter of the main body frame speaker 503 is small, it is possible to output a large sound with a booming bass, and it is possible to let the player hear a sound with rich bass.

[0167] The box extension part 504c of the main body frame speaker box 504 is formed such that the depth in the front-rear direction is longer than the height in the vertical direction, and the rear end is provided so as to protrude slightly rearward from the rear end of the frame substrate unit 730 (see FIG. 20). The box extension part 504c covers the lower part of the frame substrate unit 730 so that a gap is formed between it and the frame substrate unit 730 (unit base 770 and power supply substrate box 772) when assembled to the main body frame 4. Thereby, the box extension part 504c makes it difficult for various wirings connected to the frame substrate unit 730 to hang down.

[0168] As shown in FIG. 20, the upper surface of the box extension part 504c is inclined so as to be lower toward the rear. Thereby, it is possible to guide dust, game balls B, etc. that have fallen from above to the rear and discharge them. Also, the lower surface of the box extension part 504c is inclined so as to be higher toward the rear. Thereby, when closing the main body frame 4 with respect to the outer frame 2, the box extension part 504c does not contact the lower frame body 14 of the main body frame 4.

[0169] Also, as shown in FIG. 20, the bottom surface of the box extension portion 504c is inclined so as to be higher toward the rear. Thereby, when closing the main body frame 4 with respect to the outer frame 2, even if the main body frame 4 is inclined, the main body frame 4 can be guided into the outer frame 2 by the bottom surface of the box extension portion 504c.

[0170] This main body frame speaker box 504 supports the rear end side of the tray insertion recess 501f in the main body frame base 501 so as to suspend it in a state of being assembled to the main body frame 4. Thereby, when the game ball B discharged from the circulating ball path unit 600 is received by the ball receiving tray 720, even if a load (the weight of a plurality of game balls B) acts on the tray insertion recess 501f from above via the ball receiving tray 720, the tray insertion recess 501f does not deform.

[0171] Also, the main body frame speaker box 504 is formed of a transparent synthetic resin, and the main body frame speaker 503 can be confirmed from the outside.

[0172] The back cover 505 is provided so as to be openable and closable with respect to the main body frame base 501 so as to cover the rear of the game board 5 attached to the main body frame 4 in a state of being assembled to the pachinko machine 1. The back cover 505 is formed in an L shape in a plan view as if the right side of the flat plate is bent forward. The back cover 505 has two locking claws 505a provided at the left end so as to be vertically separated, and a plurality of shaft portions 505b provided in a vertical row at the right end. The locking claw 505a is detachably locked to the cover locking portion 502l in the main body frame base 501. The shaft portion 505b is pivotally supported by the cover shaft support portion 502m in the main body frame base 501. Thereby, the back cover 505 is attached to the main body frame base 501 of the main body frame 4 so as to be openable and closable. A plurality of ventilation holes are provided in the back cover 505, and heat from the game board 5 can be released to the outside. This back cover 505 is formed of a transparent synthetic resin.

[0173] The back cover 505 is configured such that when attempting to close it to the main body frame base unit 500 (main body frame base 501) after closing the frame substrate unit 730, which will be described later, with respect to the main body frame base unit 500 first, it is blocked from being closed due to interference (contact) with the closed frame substrate unit 730. Also, the back cover 505 is configured such that when attempting to close the main body frame 4 with respect to the outer frame 2 while opening the main body frame 4 with respect to the back cover 505 and with the back cover 505 open with respect to the main body frame base 501, it is blocked from being closed due to interference (contact) with the outer frame 2.

[0174] The game board locking member 506 is rotatably attached to the front surface of the main body frame base 501 (base wall portion 501b) about an axis extending in the front-rear direction. The game board locking member 506 can prevent the lower end side of the game board 5 from moving forward by rotating it to the locking position with the game board 5 inserted into the game board insertion portion 502.

[0175] The door opening switch 507 is for detecting the opening and closing of the door frame 3 with respect to the main body frame 4. The door opening switch 507 is attached below the cylinder insertion port 501m in the base wall portion 501b of the main body frame base 501.

[0176] The frame opening switch 508 is for detecting the opening and closing of the main body frame 4 with respect to the outer frame 2. The frame opening switch 508 is attached below the door opening switch 507 in the base wall portion 501b of the main body frame base 501.

[0177] The main body frame hinge mechanism 510 has a main body frame upper hinge body 511 attached to the upper end of the left side of the main body frame base 501 and a main body frame lower hinge body 512 attached to the lower end of the left side of the main body frame base 501.

[0178] The main body frame upper hinge body 511 includes a main body frame hinge shaft 511a that protrudes upward in a cylindrical shape and is inserted into the bearing groove 31a of the outer frame upper hinge body 31 in the outer frame 2, and a door frame upper shaft hole 511b that is provided adjacent to the main body frame hinge shaft 511a and into which the door frame upper hinge shaft 111a of the door frame upper hinge body 111 in the door frame 3 is inserted from below. The main body frame upper hinge body 511 has a flat plate-shaped portion that extends horizontally and a portion that extends downward from the rear end of the horizontally extending portion. The main body frame hinge shaft 511a and the door frame upper shaft hole 511b are provided in the horizontally extending portion of the main body frame upper hinge body 511. Further, the portion of the main body frame upper hinge body 511 that extends downward is attached to the main body frame base 501.

[0179] The main body frame lower hinge body 512 includes an outer frame shaft hole (not shown) into which the hinge shaft 35a of the outer frame lower hinge body 35 in the outer frame 2 is inserted from below, and a door frame lower shaft hole 512b into which the door frame lower hinge shaft 112a of the door frame lower hinge body 112 in the door frame 3 is inserted from above. The main body frame lower hinge body 512 has a flat plate-shaped portion that extends horizontally and a portion that extends upward from the rear end of the horizontally extending portion. The outer frame shaft hole and the door frame lower shaft hole 512b are provided in the horizontally extending portion of the main body frame lower hinge body 512. Further, the portion of the main body frame lower hinge body 512 that extends downward is attached to the main body frame base 501. Also, the portion of the main body frame lower hinge body 512 that extends downward abuts against the rear wall portion 45c of the curtain plate 45 when the main body frame 4 is closed with respect to the outer frame 2. Thereby, the main body frame 4 does not hinge-rotate further rearward.

[0180] The main body frame hinge mechanism 510 supports the main body frame 4 so as to be openable and closable with respect to the outer frame 2 by inserting the main body frame hinge shaft 511a of the main body frame upper hinge body 511 into the bearing groove 31a of the outer frame upper hinge body 31 in the outer frame 2 and inserting the hinge shaft 35a of the outer frame lower hinge body 35 in the outer frame 2 into the outer frame shaft hole of the main body frame lower hinge body 512.

[0181] Further, the main body frame hinge mechanism 510 supports the door frame 3 so that it can be opened and closed with respect to the main body frame 4 by inserting the upper hinge shaft 111a of the upper door frame hinge body 111 of the door frame 3 from below into the upper shaft hole 511b for the door frame of the upper hinge body 511 on the main body frame, and inserting the lower hinge shaft 112a of the lower door frame hinge body 112 of the door frame 3 from above into the lower shaft hole 512b for the door frame of the lower hinge body 512 on the main body frame.

[0182] [4-2. Ball Launching Unit] The ball launching unit 550 in the main body frame 4 will be described in detail mainly with reference to FIGS. 25 to 28 and the like. FIG. 25(a) is a perspective view of the ball launching unit in the main body frame as seen from the front, and (b) is a perspective view of the ball launching unit in the main body frame as seen from the rear. FIG. 26(a) is an exploded perspective view of the ball launching unit as seen from the front, and (b) is an exploded perspective view of the ball launching unit as seen from the rear. FIG. 27(a) is a perspective view of the launching unit cover of the ball launching unit as seen from the left rear, and (b) is an explanatory view of the ball launching unit showing only the launching unit cover in cross section in a front view. FIG. 28 is a front view of the ball launching unit showing the launch subtraction sensor and the launch hammer with broken lines.

[0183] The ball launching unit 550 is for launching the game ball B into the game area 5a of the game board 5, and has a ball inlet 550a for receiving the game ball B sent from the ball feeding unit 700, a ball launching port 550b through which the launched game ball B is discharged to the outside, and a ball discharge port 550c for discharging the game ball B. The ball launching unit 550 can drive the game ball B with a strength corresponding to the rotation angle of the handle 160 at the lower right front corner of the door frame 3. The ball launching unit 550 is attached to a ball launching unit attachment portion 501i provided below the light-shielding eaves portion 501p on the upper part of the front surface of the base wall portion 501b of the main body frame base 501, on the right side of the center in the left-right direction.

[0184] The ball inlet 550a of the ball launching unit 550 is provided at the rear surface and is quadrangularly open with a size allowing one game ball B to pass through. This ball inlet 550a is positioned in front of the ball delivery outlet 702 of the ball delivery unit 700 and communicates with the ball delivery outlet 702 when assembled to the main body frame 4. The ball launching port 550b is obliquely open at the left end of the upper surface with the left end side being lower. This ball launching port 550b communicates with the upper part of the far right opening 570b of the far unit 570 when assembled to the main body frame 4. The ball discharge port 550c is open at the left side surface. This ball discharge port 550c communicates with the lower part of the far right opening 570b of the far unit 570 when assembled to the main body frame 4.

[0185] The ball launching unit 550 includes a flat unit base 551, a launching unit cover 552 attached to cover the front side of the unit base 551, a launching solenoid 553 attached to the rear side of the unit base 551 such that the rotation shaft 553a protrudes forward from the unit base 551, a launching subtraction sensor 554 capable of detecting the presence or absence of launching of the game ball B, a launching hammer 555 attached to the rotation shaft 553a of the launching solenoid 553, a nut 556 attaching the launching hammer 555 to the rotation shaft 553a of the launching solenoid 553, an annular spacer 557 inserted into the rotation shaft 553a of the launching solenoid 553, and two rubber stoppers 558 capable of contacting the launching hammer 555.

[0186] The unit base 551 of the ball launching unit 550 is formed of a metal plate such as an iron plate. The unit base 551 is provided with the ball inlet 550a, which quadrangularly penetrates through the part from the center to the upper part in a front view.

[0187] The emission unit cover 552 is formed by injection molding using a transparent synthetic resin. The emission unit cover 552 includes a flat front plate 552a provided at a distance forward from the unit base 551, a ball launch platform 552b provided at a position directly below the ball inlet 550a of the unit base 551 on the rear side of the front plate 552a and inclined so that the left end side is higher, and a detection port 552c penetrating the ball launch platform 552b vertically.

[0188] Also, the emission unit cover 552 includes an upper wall portion 552d of the launch platform that forms a gap through which the game ball B cannot pass between it and the ball launch platform 552b in the upper right of the front view of the ball launch platform 552b on the rear side of the front plate 552a, and a lower sensor mounting portion 552e and an upper sensor mounting portion 552f provided so as to sandwich the ball launch platform 552b and the upper wall portion 552d of the launch platform on the rear side of the front plate 552a.

[0189] Furthermore, the emission unit cover 552 includes a barrier portion 552g provided in the emission direction of the game ball B on the ball launch platform 552b and having an upper end constituting the lower end of the ball emission port 550b, a discharge guide inner wall portion 552h extending downward from the left end of the ball launch platform 552b and then extending leftward so as to become lower on the rear side of the front plate 552a, a window portion 552i penetrating vertically in a portion above and to the right of the lower sensor mounting portion 552e, a wiring groove 552j recessed on the front surface of the front plate 552a and extending from the lower left to the upper right, and a plurality of wiring locking portions 552k protruding parallel to the bottom surface of the wiring groove 552j from the front end of the wiring groove 552j.

[0190] The ball launching base 552b has the game ball B supplied through the ball inlet 550a placed thereon. The upper surface of the ball launching base 552b is inclined such that the left end is higher in a front view. The ball launching base 552b is recessed in a constant cross-sectional shape (trapezoidal shape) so as to narrow downward along the direction in which the upper surface is inclined. The length of the ball launching base 552b in the inclined direction (launching direction) is approximately the same as the diameter of the game ball B, and it is formed such that only one game ball B is placed in contact with the two inclined surfaces recessed in a trapezoidal shape. In the present embodiment, the ball launching base 552b is inclined at an angle of approximately 27 degrees with respect to the horizontal.

[0191] The detection port 552c is provided at the bottom of the portion of the ball launching base 552b recessed in a trapezoidal shape. The upper wall portion 552d of the launching base is provided above the lower end side of the inclined ball launching base 552b. The upper wall portion 552d of the launching base is provided so as to form a gap between the ball launching base 552b through which the game ball B cannot pass and through which the tip of the launching hammer 555 can pass. As a result, the game ball B supplied to the ball launching base 552b is placed on the ball launching base 552b in a state where it abuts against the left end of the upper wall portion 552d of the launching base and the movement thereof to the downstream side (here, the right side) in the inclined direction of the ball launching base 552b is restricted.

[0192] When the game ball B is placed on the ball launching base 552b, the center of the game ball B is located slightly to the right of the center of the ball inlet 550a. Also, the length of the ball launching base 552b is set to the length where only one game ball B can be placed. Thus, when the game ball B is placed on the ball launching base 552b, even if the launched game ball B returns or a game ball B is fed from the ball feeding unit 700 and another game ball B is supplied to the ball launching base 552b, the game ball B placed on the ball launching base 552b will be bounced off and discharged to the discharge guide inner wall portion 552h side (the far ball unit 570 side) without landing on the ball launching base 552b and detected by the far ball sensor 607. Therefore, when the game ball B is placed on the ball launching base 552b, even if the launched game ball B returns or is supplied from the ball feeding unit 700, the game ball B is sent to the far ball unit 570 and added to the held balls as a far ball, so that the error with the actual number of launched game balls B can be eliminated.

[0193] The sensor lower mounting portion 552e and the sensor upper mounting portion 552f are respectively attached with the light emitting portion 554a and the light receiving portion 554b that constitute the launch subtraction sensor 554. In the sensor lower mounting portion 552e, since the launch subtraction sensor 554 (here, the light emitting portion 554a) is mounted facing upward, there is a risk of false detection if dust or dirt adheres to the upper surface of the light emitting portion 554a. However, since the light emitting portion 554a is mounted obliquely, it is difficult for dust or the like to accumulate.

[0194] The barrier portion 552g is provided below the trajectory of the game ball B launched from the ball launching base 552b at a position farther to the left from the ball launching base 552b than the diameter of the game ball B. The barrier portion 552g is configured such that a game ball B with a weak driving strength can come into contact. The contacted game ball B will flow down onto the lower discharge guide inner wall portion 552h through the space between the barrier portion 552g and the ball launching base 552b and will not return to the ball launching base 552b. Also, since the barrier portion 552g extends vertically, it is possible to prevent the intrusion of game balls B from the far ball unit 570 side.

[0195] The discharge guide inner wall portion 552h forms a ball discharge port 550c with the barrier portion 552g. The discharge guide inner wall portion 552h is inclined so that the left end side is lower, guides the game ball B that has flowed down through the space between the ball launch base 552b and the barrier portion 552g to the left, and can discharge it from the ball discharge port 550c at the left end to the far unit 570 side. As a result, even though the game ball B was struck by the launch hammer 555 at the ball launch base 552b, the game ball B that was not launched from the ball launch port 550b is guided by the discharge guide inner wall portion 552h and discharged from the ball discharge port 550c to the far unit 570.

[0196] The window portion 552i is provided at a portion between the ball launch base 552b and the sensor mounting portion 552e below, and at a portion in front of the tip of the launch hammer 555 at the retracted position away from the striking position. Since the launch subtraction sensor 554 (here, the light emitting portion 554a) is mounted upward on the sensor mounting portion 552e below, dust, dirt, etc. tend to accumulate on the upper surface of the light emitting portion 554a, and there is a risk of false detection if dust, etc. adheres, but by inserting a cleaning tool such as a cotton swab through the window portion 552i at the portion between the ball launch base 552b and the sensor mounting portion 552e below, the upper surface of the light emitting portion 554a can be easily cleaned.

[0197] Also, since the tip of the launch hammer 555 comes into contact with the game ball B, if dust or the like adheres to the tip of the launch hammer 555, there is a risk that the game ball B cannot be launched well. However, as shown in FIG. 28, since the window portion 552i is provided in front of the tip of the launch hammer 555 at the standby position, the tip of the launch hammer 555 can be easily cleaned by inserting a cleaning tool such as a cotton swab through the window portion 552i.

[0198] The launch solenoid 553 is composed of a rotary solenoid having a rotation axis 553a extending back and forth. Although details will be described later, the launch solenoid 553 performs a series of operations hard based on a predetermined launch sequence in association with the ball feed solenoid 706 described later.

[0199] The launch subtraction sensor 554 can detect the presence or absence of the game ball B on the ball launch base 552b. The launch subtraction sensor 554 includes a light emitting unit 554a that irradiates detection light and a light receiving unit 554b that receives the detection light, and they are respectively attached to the sensor lower mounting portion 552e and the sensor upper mounting portion 552f of the launch unit cover 552. The detection light emitted from the light emitting unit 554a is received by the light receiving unit 554b through the detection port 552c provided at the bottom of the ball launch base 552b. At this time, if the game ball B is placed on the ball launch base 552b, the detection light is blocked by the game ball B, and the detection light is not received by the light receiving unit 554b. Thereby, the presence or absence of the game ball B on the ball launch base 552b can be detected.

[0200] The launch subtraction sensor 554, details of which will be described later, is for detecting that the game ball B has been launched from the ball launch base 552b and subtracting one from the number of balls held by the player.

[0201] In this embodiment, the number of balls held by the player is subtracted by determining that the launch subtraction sensor 554 is OFF. However, since the number of balls held by the player may change depending on the operation of the launch subtraction sensor 554, a one-to-one reliability is required for the launch of the game ball B. By the way, in the normal passing determination for the game ball B, it is determined by the switching from non-detection, detection, detection (so-called "011"), that is, from OFF to ON (from the absence to the presence of the game ball B) at a predetermined time interval (for example, the interrupt period is 4 ms) with respect to the light from the light emitting unit at the light receiving unit. However, there is a concern about the ball frenzy when the game ball B is supplied to the ball launch base 552b (launch rail) and false detection other than the launched ball by the tip of the launch hammer 555 after the launch.

[0202] In contrast, in the present embodiment, attention is paid to the fact that the game ball B is staying on the ball launching base 552b. First, it is determined whether there is a game ball B on the ball launching base 552b, and when it is determined that the game ball B is gone, it is determined to launch. That is, after making an ON (there is a game ball) determination, it is set to OFF (no game ball = launch). Specifically, thresholds for recognizing ON and OFF (for example, the ON threshold is 80 ms and the OFF threshold is 80 ms) are provided. Only when the ON threshold is exceeded is it regarded as "there is a game ball" for the first time. When the OFF threshold is exceeded from there, it is recognized that the game ball B has been launched ( "no game ball"), and the number of held balls is subtracted. Thereby, it is possible to prevent malfunction due to chattering or noise of the game ball. Note that as the above threshold, an integer multiple of the interrupt period (for example, 4 ms) is desirable.

[0203] The launching hammer 555 is for hitting and launching the game ball B. The launching hammer 555 is attached to the rotating shaft 553a of the launching solenoid 553 and rotates (pivots) together with the rotating shaft 553a. The tip of the launching hammer 555 is provided so as to be able to contact the game ball B placed on the ball launching base 552b through between the ball launching base 552b and the upper wall portion 552d of the launching base.

[0204] By the way, in mass-producing the ball launching unit 550, in order to ensure the launching accuracy of the game ball B, all of the insertion angle of the tip of the launching hammer 555, the mounting angle of the ball launching base 552b (launching rail), the adjustment of the tip position of the launching hammer 555 after assembly to the ball launching unit 550, etc. need to be adjusted with strict values, and the difficulty of mass production was high. Therefore, in the present embodiment, the method of determining the launching accuracy is changed from ensuring by the way the game ball B hits the conventional launching rail and the shape of the launching rail to ensuring only the contact between the launching hammer 555 and the game ball B. In this change, since the launching accuracy is more important for the accuracy of the tip of the launching hammer 555 alone, the tip of the launching hammer 555 is formed by sheet metal insert molding, and the contact area with the game ball B at the tip of the launching hammer 555 is made larger than before. Thereby, it is possible to ensure the stability of the launching accuracy and to allow some assembly errors, and the ball launching unit 550 can be mass-produced.

[0205] The nut 556 is screwed onto the rotating shaft 553a of the launch solenoid 553. The spacer 557 has the rotating shaft 553a of the launch solenoid 553 inserted therein. The rotating shaft 553a of the launch solenoid 553 is inserted through the spacer 557 and the launch hammer 555 in that order from the rear, and the nut 556 is screwed onto and tightened against the tip protruding forward from the launch hammer 555, whereby the launch hammer 555 is attached.

[0206] The rubber 558 is attached to the unit base 551 so as to regulate the rotation range (swinging range) of the launch hammer 555.

[0207] According to the ball launch unit 550 of the present embodiment, only one game ball B is placed on the ball launch table 552b, and the launch subtraction sensor 554 is used to detect that the game ball B has been launched from the ball launch table 552b. Therefore, it is possible to reliably detect the launch of each game ball B one by one.

[0208] Also, according to the ball launch unit 550, since the launch unit cover 552 is formed of a transparent synthetic resin, by opening the door frame 3 with respect to the main body frame 4, the inside of the ball launch unit 550 can be confirmed from the front. By making the launch unit cover 552 transparent, there is a risk of false detection in the launch subtraction sensor 554 composed of a photosensor due to light entering the inside. However, when the door frame 3 is closed with respect to the main body frame 4, the light from the front is blocked by the door frame 3, the light from the rear is blocked by the unit base 551 made of a metal plate, and furthermore, the light from above is blocked by the eaves portion 501p of the black opaque main body frame base 501. Therefore, no light enters the inside, and false detection due to light in the launch subtraction sensor 554 is prevented.

[0209] In addition, the pachinko machine 1 (circulating gaming machine) disclosed in this embodiment is configured to subtract the held balls only after the launch is completed. Therefore, compared with the method of subtracting the held balls using the ball feed as a trigger before the launch, which was adopted in conventional circulating gaming machines, when clearing the game, the game balls B (held balls already subtracted) remaining on the launch rail without being launched are automatically fired blank to become foul balls in order to return them to the player, and there is no need to add held balls to balance the accounts, so that rapid clearing processing can be performed.

[0210] Furthermore, according to the ball launch unit 550, since the launch subtraction sensor 554 is mounted obliquely, it is possible to make it difficult for dust, dirt, etc. to accumulate on the detection surface of the launch subtraction sensor 554. Also, even if dust or the like adheres to the launch subtraction sensor 554, a cleaning tool such as a cotton swab can be inserted through the window portion 552i of the launch unit cover 552 to easily clean the detection surface, and false detection (malfunction) due to the adhesion of dust or the like can be easily eliminated.

[0211] Also, according to the ball launch unit 550, since the window portion 552i is also provided at a position where the tip of the launch hammer 555 can be cleaned, the tip of the launch hammer 555 can be easily cleaned by inserting a cleaning tool through the window portion 552i at that position, and variations in the launch of the game balls B due to the adhesion of dust or the like can be eliminated.

[0212] [4-3. Foul Unit] Regarding the foul unit 570 in the main body frame 4, it will be described in detail mainly with reference to FIGS. 29 to 31. FIG. 29(a) is a perspective view of the foul unit in the main body frame as seen from the front, and (b) is a perspective view of the foul unit in the main body frame as seen from the rear. FIG. 30(a) is an exploded perspective view of the foul unit as seen from the front after being disassembled, and (b) is an exploded perspective view of the foul unit as seen from the rear after being disassembled. FIG. 31(a) is an explanatory view showing the state where the foul shutter is closed in the side cross-section of the foul unit, and (b) is an explanatory view showing the state where the foul shutter is open in the side cross-section of the foul unit.

[0213] The fur unit 570 is for collecting game balls B that have been launched by the ball launching unit 550 and driven between the outer rail 1001 and the inner rail 1002 on the game board 5 but not into the game area 5a, game balls B that have been launched by the ball launching unit 550 but whose launching intensity is too weak to reach the game board 5 (between the outer rail 1001 and the inner rail 1002), and the like. The fur unit 570 has a fur upper opening 570a that is open on the upper surface, a fur right opening 570b that is open on the right side surface, and a fur ball outlet 570c that communicates with the fur upper opening 570a and the fur right opening 570b and is open rearward at the lower end.

[0214] The fur unit 570 is attached to a fur unit attachment portion 501h provided at the middle portion in the left - right direction at the upper front of the base wall portion 501b of the main body frame base 501. When the fur unit 570 is assembled to the main body frame 4, the upper end is substantially at the same height as the upper end of the base wall portion 501b, and the fur right opening 570b is closed by the ball launching port 550b and the ball discharge port 550c of the ball launching unit 550. That is, when assembled to the main body frame 4, the fur right opening 570b communicates with the ball launching port 550b and the ball discharge port 550c. The fur upper opening 570a and the fur right opening 570b are formed by a unit base 572 and a front cover 573 described later, and the ball discharge port 550c is formed in the unit base 572.

[0215] The fur unit 570 includes a fur shutter 571 that can open and close the fur upper opening 570a so that the game ball B cannot pass through, a unit base 572 attached to the base wall portion 501b of the main body frame base 501, a front cover 573 attached to the front side of the unit base 572, a rear cover 574 attached to the rear side of the unit base 572 so as to cover the rear portion of the fur shutter 571, and a spring 575 that biases the fur shutter 571 forward.

[0216] The fur shutter 571 is supported so as to be slidable in the front-rear direction by the cooperation of the unit base 572 and the front cover 573. The fur shutter 571 has a shutter portion 571a in the shape of a long strip plate extending left and right, two front projecting portions 571b each projecting forward from both left and right ends of the shutter portion 571a, and a flat rear wall portion 571c extending downward from the rear end side of the shutter portion 571a.

[0217] The fur shutter 571 can close the fur upper opening 570a so that the game ball B cannot pass through by the shutter portion 571a. The two front projecting portions 571b are provided such that the front ends project forward from the front cover 573 and are provided so that the rear surface of the door frame body 100 in the door frame 3 can abut. The front end of the spring 575 abuts against the rear surface of the rear wall portion 571c.

[0218] The unit base 572 is formed in an L shape having a portion extending downward near the right end and being long left and right. The unit base 572 has a shutter housing portion 572a extending left and right along the upper side and recessed rearward, a ball guide portion 572b extending left and right below the shutter housing portion 572a with the right end extending downward and recessed rearward, a cylindrical portion 572c extending rearward in a square tube shape from the lower end of the ball guide portion 572b, and a receiving portion 572d extending forward in a flat plate shape from the lower end of the ball guide portion 572b.

[0219] The shutter housing portion 572a of the unit base 572 houses the fur shutter 571 and the spring 575 from the front. The portion of the ball guide portion 572b of the unit base 572 extending left and right is inclined so as to be lower toward the right. The cylindrical portion 572c of the unit base 572 is inclined so as to be lower rearward, and the opening at the rear end is the fur ball outlet 570c.

[0220] The receiving portion 572d of the unit base 572 is inclined such that the rear end side is lower. The right end edge of this receiving portion 572d constitutes the lower end edge of the far right opening 570b. Since the receiving portion 572d has its right end edge constituting the lower end edge of the far right opening 570b and the lower portion including the lower end of the far right opening 570b communicates with the ball discharge port 550c in the ball launching unit 550, the game ball B discharged from the ball discharge port 550c through the far right opening 570b after falling from the ball launching base 552b, etc., will flow down onto the receiving portion 572d, be guided rearward by the receiving portion 572d, and be discharged rearward from the far ball outlet 570c through the cylindrical portion 572c. When the far shutter 571 is closed, the game ball B launched from the ball launching unit 550 and contacting the back surface (lower surface) of the far shutter 571 through the far right opening 570b is sent to the rear ball guiding portion 572b by the lower wall portion 573c of the front cover 573, passes through the rear of the receiving portion 572d, and is discharged from the far ball outlet 570c through the cylindrical portion 572c.

[0221] Further, the unit base 572 has a notch 572e that is recessed forward near the right end of the bottom wall of the portion extending left and right in the ball guiding portion 572b. This notch 572e is formed to a size that does not obstruct the flow of the game ball B, and can discharge dust, etc. that has entered the ball guiding portion 572b from the far upper opening 570a downward.

[0222] The front cover 573 includes an L-shaped flat front plate 573a having a portion that extends long left and right and extends downward near the right end, a left wall portion 573b that extends rearward from the left end edge of the front plate 573a, a lower wall portion 573c that extends rightward along the lower end edge of the front plate 573a from the lower end of the left wall portion 573b and also extends rearward, a hanging wall portion 573d that extends downward along the left end edge of the portion extending downward in the front plate 573a from the right end of the lower wall portion 573c and also extends rearward, and a right wall portion 573f that extends rearward from the upper right end of the front plate 573a.

[0223] The upper edge and the right edge of the front plate 573a form the front edges of the upper fur opening 570a and the right fur opening 570b. The right edge at the upper end of the left wall portion 573b forms the left edge of the upper fur opening 570a, and the left edge at the upper end of the right wall portion 573f forms the right edge of the upper fur opening 570a, respectively. The lower edge of the right wall portion 573f forms the upper edge of the right fur opening 570b, respectively.

[0224] The front cover 573 has a lower wall portion 573c located below the upper fur opening 570a. The lower wall portion 573c of this front cover 573 is gently inclined so as to be lower toward the left and is inclined so as to be lower toward the rear. As a result, it does not properly receive the impact of the game ball B that has fallen from above as a fur ball, and while escaping the impact, it can pass the game ball B to the ball guiding portion 572b of the unit base 572 provided at the rear. Then, the game ball B passed to the ball guiding portion 572b is discharged rearward from the fur ball outlet 570c through the cylindrical portion 572c from the lower end at the right end of the ball guiding portion 572b.

[0225] Two springs 575 are provided separately on the left and right and are arranged inside the box-shaped shutter housing portion 572a in the unit base 572. The front end of the spring 575 is in contact with the rear surface of the rear wall portion 571c of the fur shutter 571, and the rear end is in contact with the front surface of the rear wall of the shutter housing portion 572a. The spring 575 biases the fur shutter 571 forward.

[0226] This fur unit 570 is attached to a fur unit attachment portion 501h provided near the upper part in the center in the left-right direction on the front surface of the base wall portion 501b of the main body frame 4 in a state of being assembled to the pachinko machine 1. In this state, the ball launching unit 550 is attached adjacent to the right side of the fur unit 570.

[0227] Then, as shown in FIG. 21, the upper far opening 570a of the far unit 570 is located near the upper end of the base wall portion 501b and on the axis of the launching direction of the game ball B in the ball launching unit 550. In other words, the upper far opening 570a is provided at a position between the lower end opening portion between the outer rail 1001 and the inner rail 1002 on the game board 5 and the ball launching port 550b of the ball launching unit 550.

[0228] On the other hand, the right far opening 570b of the far unit 570 has its upper part communicating with the ball launching port 550b of the ball launching unit 550 and its lower part communicating with the ball discharge port 550c of the ball launching unit 550. Therefore, the upper far opening 570a and the right far opening 570b are provided at a position between the lower end opening portion between the outer rail 1001 and the inner rail 1002 on the game board 5 and the ball launching port 550b of the ball launching unit 550. As a result, the game ball B launched from the ball launching port 550b of the ball launching unit 550 enters the far unit 570 through the right far opening 570b and then enters between the outer rail 1001 and the inner rail 1002 on the game board 5 through the upper far opening 570a.

[0229] When the door frame 3 is opened forward with respect to the main body frame 4, the far shutter 571 slides forward by the biasing force of the spring 575 as shown in FIG. 34(a), and the shutter portion 571a of the far shutter 571 protrudes between the front surface of the unit base 572 and the front plate 573a of the front cover 573, closing the upper far opening 570a so that the game ball B cannot pass through. That is, the far shutter 571 is in the closed position. In this state, the stepped portion provided at the rear end of the front protruding portion 571b of the far shutter 571 abuts against the front cover 573 and does not slide forward any further.

[0230] When the fur shutter 571 is in the closed position and the game ball B is launched from the ball launch unit 550, the launched game ball B enters the fur unit 570 through the fur right opening 570b, then contacts the lower surface of the shutter portion 571a of the fur shutter 571, and flows down within the fur unit 570 without being launched upward through the fur upper opening 570a. The game ball B that has flowed down within the fur unit 570 is guided by the lower wall portion 573c, the ball guide portion 572b, the cylindrical portion 572c, etc., and is supplied from the rear fur ball outlet 570c to the circulating ball path unit 600. Thereby, even when the game ball B is launched while the door frame 3 is open, the game ball B does not leak to the outside from the fur unit 570.

[0231] In addition, when the door frame 3 is opened with respect to the main body frame 4, the door open switch 507 turns OFF. Therefore, the launch of the game ball B from the ball launch unit 550 may be stopped due to the OFF state of the door open switch 507. Alternatively, when the door frame 3 is opened, instead of stopping the launch of the game ball B, the game may be temporarily stopped by the main control board 1310, and when the door frame 3 is closed, the game may be resumed.

[0232] Also, when the main body frame 4 is opened with respect to the outer frame 2 (the frame open switch 508 is OFF), since the door frame 3 is closed and the game ball B does not leak to the outside, the launch of the game ball B from the ball launch unit 550 may not be stopped. Alternatively, when the main body frame 4 is opened, the same processing as when the above-mentioned door frame 3 is opened may be performed.

[0233] When the door frame 3 is closed with respect to the main body frame 4, the rear surface of the door frame 3 contacts the front ends of the two front protruding portions 571b of the fur shutter 571, and the fur shutter 571 is in a state of sliding backward against the biasing force of the spring 575 (see Fig. 34(b)). In this state, the shutter portion 571a of the fur shutter 571 is located behind the front surface of the unit base 572, and the fur upper opening 570a is opened so that the game ball B can pass through. That is, the fur shutter 571 is in the open position.

[0234] When the game ball B is launched from the ball launch unit 550 with the fair shutter 571 in the open position, the launched game ball B enters the fair unit 570 through the fair right opening 570b and then is launched upward toward the game board 5 side (between the outer rail 1001 and the inner rail 1002) through the fair upper opening 570a. Then, when the launched game ball B passes over the backflow prevention member 1007 provided at the upper end of the inner rail 1002, the game ball B is driven into the game area 5a.

[0235] In addition, the game ball B that was launched from the ball launch unit 550 but did not pass over the backflow prevention member 1007 at the upper end of the inner rail 1002 (the game ball B that was not driven into the game area) flows down between the outer rail 1001 and the inner rail 1002, enters through the fair upper opening 570a as a fair ball, and is recovered by the fair unit 570. The game ball B recovered through the fair upper opening 570a is guided by the lower wall portion 573c, the ball guide portion 572b, the cylindrical portion 572c, etc., and is discharged (supplied) from the rear fair ball outlet 570c to the circulating ball path unit 600.

[0236] Also, in the fair unit 570, the game ball B discharged from the ball discharge port 550c of the ball launch unit 550 is received at the lower part of the fair right opening 570b. The game ball B that has entered the fair unit 570 from the lower part of the fair right opening 570b flows down onto the receiving portion 572d and is guided backward by the inclination of the receiving portion 572d and discharged from the fair ball outlet 570c to the circulating ball path unit 600.

[0237] Thus, according to the fur ball unit 570, even though the game ball B launched from the ball launching unit 550 fails to enter the game area 5a of the game board 5, it can be recovered without leaking to the outside and supplied to the circulating ball path unit 600. And although details will be described later, in the circulating ball path unit 600, the game ball B supplied from the fur ball outlet 570c is detected by the fur ball sensor 607. When the game ball B is detected by this fur ball sensor 607, the number of balls held by the player is incremented by one.

[0238] Also, in the fur ball unit 570, since the unit base 572, the front cover 573, etc. are formed of a transparent synthetic resin, the inside can be visually recognized from the outside, and it is easy to discover ball jams inside.

[0239] [4-3a. Fur Ball Unit of the Second Embodiment] Next, the fur ball unit 570A of the second embodiment will be described in detail mainly with reference to FIGS. 32 to 34. FIG. 32(a) is a perspective view of the fur ball unit of the second embodiment as seen from the front, and (b) is a perspective view of the fur ball unit of the second embodiment as seen from the rear. FIG. 33(a) is an exploded perspective view of the fur ball unit of the second embodiment as seen from the front after being disassembled, and (b) is an exploded perspective view of the fur ball unit of the second embodiment as seen from the rear after being disassembled. FIG. 34(a) is an explanatory view showing a state where the fur shutter is closed in the side cross-section of the fur ball unit of the second embodiment, and (b) is an explanatory view showing a state where the fur shutter is open in the side cross-section of the fur ball unit of the second embodiment.

[0240] The fur unit 570A is for collecting game balls B that were launched by the ball launching unit 550 and driven between the outer rail 1001 and the inner rail 1002 on the game board 5 but not into the game area 5a, game balls B that were launched by the ball launching unit 550 but whose launching intensity was too weak to reach the game board 5 (between the outer rail 1001 and the inner rail 1002), and the like. The fur unit 570A has a fur upper opening 570a that is open on the upper surface, a fur right opening 570b that is open on the right side surface, and a fur ball outlet 570c that communicates with the fur upper opening 570a and the fur right opening 570b and is open rearward at the lower end.

[0241] The fur unit 570A is attached to a fur unit attachment portion 501h provided at the middle portion in the left - right direction at the upper front of the base wall portion 501b of the main body frame base 501. In a state where the fur unit 570A is assembled to the main body frame 4, the upper end is substantially at the same height as the upper end of the base wall portion 501b, and the fur right opening 570b is closed by the ball launching port 550b and the ball discharge port 550c of the ball launching unit 550. That is, in a state where it is assembled to the main body frame 4, the fur right opening 570b communicates with the ball launching port 550b and the ball discharge port 550c. The fur upper opening 570a and the fur right opening 570b are formed by a unit base 572 and a front cover 573 described later, and the ball discharge port 550c is formed in the unit base 572.

[0242] The fur unit 570A includes a fur shutter 571 that can open and close the fur upper opening 570a so that the game ball B cannot pass through, a unit base 572 attached to the base wall portion 501b of the main body frame base 501, a front cover 573 attached to the front side of the unit base 572, a rear cover 574 attached to the rear side of the unit base 572 so as to cover the rear portion of the fur shutter 571, a spring 575 that biases the fur shutter 571 forward, and a fur ball grounding sheet metal 576 provided between the unit base 572 and the front cover 573.

[0243] The faro shutter 571 is supported so as to be slidable in the front-rear direction by the cooperation of the unit base 572 and the front cover 573. The faro shutter 571 has a shutter portion 571a in the shape of a long strip plate extending left and right, two front protruding portions 571b each protruding forward from both left and right ends of the shutter portion 571a, and a flat rear wall portion 571c extending downward from the rear end side of the shutter portion 571a.

[0244] The faro shutter 571 can close the faro upper opening 570a so that the game ball B cannot pass through it by the shutter portion 571a. The two front protruding portions 571b are provided such that the front ends protrude forward from the front cover 573 and are provided so that the rear surface of the door frame body 100 in the door frame 3 can abut. The front end of the spring 575 abuts on the rear surface of the rear wall portion 571c.

[0245] The unit base 572 has a flat main body portion 572f in a shape of a partial T extending left and right and having a portion extending downward near the right end, a shutter insertion port 572g penetrating front and rear and extending left and right near the upper end of the main body portion 572f, and a plurality of rear support ports 572h provided along the lower end edge on the left side of the portion extending downward in the main body portion 572f and penetrating front and rear.

[0246] In the unit base 572, near the lower end of the portion extending downward in the main body portion 572f, a faro ball outlet 570c penetrating front and rear and extending rearward in a square tube shape is provided. The tubular faro ball outlet 570c is inclined so as to be lower toward the rear.

[0247] The lower end edge of the part on the left side of the main body part 572f is inclined so that it is lower toward the right than the part extending downward. The shutter insertion opening 572g is provided with a size that allows the shutter part 571a and the front protruding part 571b of the flange shutter 571 to be inserted. The plurality of rear support openings 572h are each provided long in the left-right direction so as to be lower toward the right, and are arranged in a row along the inclined lower end edge of the main body part 572f. The rear support opening 572h is provided so that the support piece 576a of the flange ball earthing sheet metal 576 can be inserted with a gap.

[0248] The front cover 573 includes a flat front plate 573a in a partial T-shape having a part extending downward near the right end and long in the left-right direction, a left wall part 573b extending rearward from the left end edge of the front plate 573a, a lower wall part 573c extending rightward and rearward along the lower end edge of the front plate 573a from the lower end of the left wall part 573b, a hanging wall part 573d extending downward and rearward along the left end edge of the part extending downward in the front plate 573a from the right end of the lower wall part 573c, a bottom wall part 573e extending rightward and rearward along the lower end edge of the part extending downward in the front plate 573a from the lower end of the hanging wall part 573d, and a right wall part 573f extending rearward from the upper right end of the front plate 573a.

[0249] The upper end edge and the right end edge of the front plate 573a constitute the front end edge of the flange upper opening 570a and the flange right opening 570b. The right end edge of the upper end of the left wall part 573b constitutes the left end edge of the flange upper opening 570a, and the left end edge of the upper end of the right wall part 573f constitutes the right end edge of the flange upper opening 570a, respectively. The lower end edge of the right wall part 573f constitutes the upper end edge of the flange right opening 570b, and the right end edge of the bottom wall part 573e constitutes the lower end edge of the flange right opening 570b, respectively.

[0250] The front cover 573 has a lower wall portion 573c located below the fall upper opening 570a. After guiding the game ball B flowing down through the fall upper opening 570a to the right, it can be made to flow down onto the bottom wall portion 573e along the hanging wall portion 573d. This bottom wall portion 573e is inclined such that the portion in front of the fall ball outlet 570c is lower toward the rear, and the portion on the right side of said portion is inclined to be higher toward the right. Accordingly, the game ball B flowing down onto the bottom wall portion 573e is guided rearward and discharged rearward from the fall ball outlet 570c. Further, since the right end edge of the bottom wall portion 573e constitutes the lower end edge of the fall right opening 570b, the game ball B entering from the fall right opening 570b flows down onto the bottom wall portion 573e, is guided by the bottom wall portion 573e, and is discharged rearward from the fall ball outlet 570c.

[0251] Further, the front cover 573 is provided, in the front plate 573a, with a plurality of front support openings 573g that are arranged side by side left and right along the lower wall portion 573c and penetrate through in the front-rear direction. The plurality of front support openings 573g are provided so as to face the rear support openings 572h of the unit base 572. Further, the front support openings 573g are provided such that the support pieces 576a of the fall ball grounding sheet metal 576 are inserted with a gap therebetween.

[0252] The rear cover 574 is formed in a box shape with the front being open. Inside the rear cover 574, the rear portion of the fall shutter 571 is inserted and the spring 575 is disposed. The rear end of the spring 575 abuts against the front surface of the rear wall of the rear cover 574.

[0253] Two springs 575 are provided spaced apart left and right and are disposed inside the box-shaped rear cover 574. The front end of the spring 575 abuts against the rear surface of the rear wall portion 571c of the fall shutter 571, and the rear end abuts against the front surface of the rear wall of the rear cover 574. The spring 575 biases the fall shutter 571 forward.

[0254] The far ball grounding sheet metal 576 is formed of a metal sheet such as an iron plate and is finally connected to the ground of the game hall via a ground wire (not shown). The far ball grounding sheet metal 576 is formed in a long strip shape extending left and right, and a plurality of support pieces 576a extend outward from the front and rear long sides. The far ball grounding sheet metal 576 is placed on the upper surface of the lower wall portion 573c of the front cover 573, and the plurality of support pieces 576a are inserted into the rear support opening 572h of the unit base 572 and the front support opening 573g of the front cover 573 with play.

[0255] As a result, the game ball B flowing down toward the lower wall portion 573c through the far upper opening 570a is guided to the right after contacting the far ball grounding sheet metal 576 and the static electricity charged thereon is removed. At this time, since the support pieces 576a are loosely fitted in the rear support opening 572h and the front support opening 573g, when the game ball B contacts, the far ball grounding sheet metal 576 vibrates, and dust and dirt on the far ball grounding sheet metal 576 are discharged to the outside through the gaps of the loosely fitted rear support opening 572h and the front support opening 573g. Note that this far ball grounding sheet metal 576 also serves to reinforce the falling game ball B.

[0256] This far unit 570A is mounted on a far unit mounting portion 501h provided near the upper part in the lateral direction center on the front surface of the base wall portion 501b of the main body frame 4 in a state of being assembled to the pachinko machine 1. In this state, the ball launching unit 550 is mounted adjacent to the right side of the far unit 570A.

[0257] And, similar to the far unit 570 of the first embodiment, the far upper opening 570a of the far unit 570A is located near the upper end of the base wall portion 501b and on the axis of the launching direction of the game ball B in the ball launching unit 550. In other words, the far upper opening 570a is provided at a position between the lower end opening portion between the outer rail 1001 and the inner rail 1002 on the game board 5 and the ball launching port 550b of the ball launching unit 550.

[0258] On the other hand, the upper part of the far right opening 570b of the far unit 570A communicates with the ball launch port 550b of the ball launch unit 550, and the lower part communicates with the ball discharge port 550c of the ball launch unit 550. Therefore, between the lower end opening part between the outer rail 1001 and the inner rail 1002 on the game board 5 and the ball launch port 550b of the ball launch unit 550, the far upper opening 570a and the far right opening 570b are provided. As a result, the game ball B launched from the ball launch port 550b of the ball launch unit 550 enters the far unit 570A from the far right opening 570b, and then enters between the outer rail 1001 and the inner rail 1002 on the game board 5 through the far upper opening 570a.

[0259] When the door frame 3 is opened forward with respect to the main body frame 4, the far shutter 571 slides forward by the biasing force of the spring 575 as shown in FIG. 34(a), and the shutter part 571a of the far shutter 571 projects between the front surface of the unit base 572 and the front plate 573a of the front cover 573, closing the far upper opening 570a so that the game ball B cannot pass through. That is, the far shutter 571 is in the closed position. In this state, the rear wall part 571c of the far shutter 571 abuts against the rear surface of the main body part 572f of the unit base 572 and does not slide forward any further.

[0260] When the far shutter 571 is in the closed position and the game ball B is launched from the ball launch unit 550, the launched game ball B enters the far unit 570A from the far right opening 570b, abuts against the lower surface of the shutter portion 571a of the far shutter 571, and flows down within the far unit 570A without being launched upward through the far upper opening 570a. The game ball B that has flowed down within the far unit 570A is guided by the lower wall portion 573c (far ball grounding sheet metal 576), the hanging wall portion 573d, the bottom wall portion 573e, etc., and is supplied from the rear far ball outlet 570c to the circulating ball path unit 600. As a result, when the door frame 3 is open, even if the game ball B is launched, the game ball B does not leak from the far unit 570A to the outside.

[0261] In addition, when the door frame 3 is opened with respect to the main body frame 4, the door open switch 507 is turned off. Therefore, the launch of the game ball B from the ball launch unit 550 may be stopped by turning off the door open switch 507. Alternatively, when the door frame 3 is opened, instead of stopping the launch of the game ball B, the game may be temporarily stopped by the main control board 1310, and when the door frame 3 is closed, the game may be resumed.

[0262] Also, when the main body frame 4 is opened with respect to the outer frame 2 (the frame open switch 508 is off), since the door frame 3 is closed and the game ball B does not leak to the outside, the launch of the game ball B from the ball launch unit 550 may not be stopped. Alternatively, when the main body frame 4 is opened, the same processing as when the above-mentioned door frame 3 is opened may be performed.

[0263] When the door frame 3 is closed with respect to the main body frame 4, the rear surface of the door frame 3 abuts against the front ends of the two front protruding portions 571b of the faring shutter 571, and the faring shutter 571 is in a state of sliding backward against the biasing force of the spring 575 (see Fig. 34(b)). In this state, the shutter portion 571a of the faring shutter 571 is located behind the front surface of the unit base 572, and the faring upper opening 570a is opened so that the game ball B can pass through. That is, the faring shutter 571 is in the open position state.

[0264] When the game ball B is launched from the ball launching unit 550 in the state where the faring shutter 571 is in the open position, the launched game ball B enters the faring unit 570A from the faring right opening 570b, and then is launched upward to the game board 5 side (between the outer rail 1001 and the inner rail 1002) through the faring upper opening 570a. Then, when the launched game ball B crosses the backflow prevention member 1007 provided at the upper end of the inner rail 1002, the game ball B is driven into the game area 5a.

[0265] The game ball B that is launched from the ball launching unit 550 but does not cross the backflow prevention member 1007 at the upper end of the inner rail 1002 (the game ball B that is not driven into the game area) flows down between the outer rail 1001 and the inner rail 1002, enters from the faring upper opening 570a as a faring ball, and is recovered by the faring unit 570A. The game ball B recovered through the faring upper opening 570a flows down onto the faring ball grounding sheet metal 576 placed on the upper surface of the lower wall portion 573c, and the static electricity is removed by the faring ball grounding sheet metal 576. At this time, since the faring ball grounding sheet metal 576 is loosely fitted, it vibrates when the game ball B abuts against it, and dust, dirt, etc. on the faring ball grounding sheet metal 576 are discharged outside the faring unit 570A from the rear support port 572h and the front support port 573g due to the vibration.

[0266] The game ball B that has flowed down onto the fur ball earth sheet metal 576 (lower wall portion 573c) is guided to the right by its inclination, flows down onto the bottom wall portion 573e along the hanging wall portion 573d, and is guided backward by the inclination of the bottom wall portion 573e and discharged from the fur ball outlet 570c to the circulating ball path unit 600.

[0267] Also, in the fur unit 570A, the game ball B discharged from the ball discharge port 550c of the ball launch unit 550 is received at the lower part of the fur right opening 570b. The game ball B that has entered the fur unit 570A from the lower part of the fur right opening 570b flows down onto the bottom wall portion 573e, and is guided backward by the inclination of the bottom wall portion 573e and discharged from the fur ball outlet 570c to the circulating ball path unit 600.

[0268] In this way, according to the fur unit 570A, even though the game ball B was launched from the ball launch unit 550, it can be recovered without leaking to the outside and supplied to the circulating ball path unit 600 without being driven into the game area 5a of the game board 5. And, although details will be described later, in the circulating ball path unit 600, the game ball B supplied from the fur ball outlet 570c is detected by the fur ball sensor 607. When the game ball B is detected by this fur ball sensor 607, the number of balls held by the player is incremented by one.

[0269] Also, in the fur unit 570A, since the unit base 572, the front cover 573, the rear cover 574, etc. are formed of a transparent synthetic resin, the inside can be visually recognized from the outside, and it is easy to discover ball jams inside.

[0270] [4-3b. Fur Unit of the Third Embodiment] Next, the fur unit 570 of the third embodiment will be described. The fur unit 570 of the third embodiment is the same as the above-described fur unit 570 except that the opening / closing mechanism of the fur shutter 571 is different. Although not shown, the fur unit 570 of the third embodiment is provided with an electric actuator such as a motor or a solenoid for opening and closing the fur shutter 571.

[0271] In this embodiment, when the door opening switch 507 is turned off by opening the door frame 3 with respect to the main body frame 4, the fur shutter 571 slides to the closed position by the electric actuator. As a result, even if the game ball B is launched from the ball launching unit 550 with the door frame 3 open, the game ball B does not fly out to the outside through the upper fur opening 570a.

[0272] Then, when the door frame 3 is closed and the door opening switch 507 is turned on, the fur shutter 571 slides to the open position by the electric actuator, and the game ball B launched from the ball launching unit 550 can be driven into the game board 5 side through the upper fur opening 570a.

[0273] Note that when the frame opening switch 508 is turned off by opening the main body frame 4 with respect to the outer frame 2, the fur shutter 571 may be slid to the closed position by the electric actuator. In this case, if the opening / closing process of the fur shutter 571 by the frame opening switch 508 is made the same as the opening / closing process by the above-described door opening switch 507, the configuration related to the software can be simplified.

[0274] Further, an opening switch (not shown) capable of detecting both the opening of the door frame 3 and the opening of the main body frame 4 may be provided, and the fur shutter 571 may be opened and closed by an electric actuator, and the mechanism related to the opening and closing can be made simple.

[0275] [4-4. Circulating Ball Path Unit] Regarding the circulating ball path unit 600 in the main body frame 4, it will be described in detail mainly with reference to FIGS. 35 to 42 and the like. FIG. 35(a) is a perspective view of the circulating ball path unit in the main body frame as seen from the front, and (b) is a perspective view of the circulating ball path unit in the main body frame as seen from the rear. FIG. 36 is an exploded perspective view of the circulating ball path unit as seen from the front, and FIG. 37 is an exploded perspective view of the circulating ball path unit as seen from the rear. FIG. 38(a) is a plan view showing only the ball meandering member and the ball removal shutter in the circulating ball path unit, and (b) is a perspective view of the ball meandering member and the ball removal shutter in the circulating ball path unit as seen from the front. FIG. 39(a1) is an explanatory view showing the ball removal shutter and the ball meandering member in the closed position together with the ball receiving tray in a side cross section, (a2) is an explanatory view showing only the part of the ball removal shutter in (a1) from the bottom surface, (b1) is an explanatory view showing the ball removal shutter and the ball meandering member in the open position together with the ball receiving tray in a side cross section, and (b2) is an explanatory view showing only the part of the ball removal shutter in (b1) from the bottom surface.

[0276] Also, FIG. 40(a) is an explanatory view showing a front cross section of the circulating ball path unit cut at the position of the out ball sensor, and (b) is an explanatory view showing a front cross section of the circulating ball path unit cut at the position of the safe ball sensor. FIG. 41(a) is a perspective view of the lower part of the main body frame together with the outer frame with the meandering cover of the circulating ball path unit removed, as seen from the front, and (b) is a perspective view of the lower part of the main body frame together with the outer frame with the meandering cover of the circulating ball path unit removed, as seen from the rear. FIG. 42 is a plan view showing the ball meandering member, the meandering cover, the ball removal shutter, and the gauge part in the circulating ball path unit.

[0277] The circulating ball path unit 600 is for storing a plurality of game balls B discharged from the game board 5 and the game balls B recovered by the far unit 570, and for sending the stored game balls B to the ball launching unit 550 side via the ball lifting unit 650. The circulating ball path unit 600 is attached to the circulating ball path unit attachment part 501l provided on the rear surface of the base wall part 501b of the main body frame base 501.

[0278] The circulating ball path unit 600 has an out ball receiving port 600a that is long left and right and open upward, a safe ball receiving port 600b that is provided behind the out ball receiving port 600a and is long left and right and open upward, a foul ball receiving port 600c that is open at the front, and a ball discharge port 600d that is open rightward near the lower end. The out ball receiving port 600a and the safe ball receiving port 600b are formed such that the depth in the front-rear direction is slightly wider than the diameter of the game ball B, and a plurality of game balls B can pass through in the left-right direction. The foul ball receiving port 600c and the ball discharge port 600d are formed to be sized such that one game ball B can pass through at a time.

[0279] The out ball receiving port 600a receives the game ball B (out ball) received at the out port of the game board 5. The safe ball receiving port 600b receives the game ball B (safe ball) received at the winning ports such as the general winning port, start port, big winning port, etc. of the game board 5. The foul ball receiving port 600c receives the game ball B (foul ball) discharged from the foul ball outlet 570c of the foul unit 570. The ball discharge port 600d discharges the game balls B received at the out ball receiving port 600a, the safe ball receiving port 600b, and the foul ball receiving port 600c and stored inside, and delivers them to the ball lifting unit 650.

[0280] Further, the circulating ball path unit 600 has an out ball passage 601 through which the game ball B received at the out ball receiving port 600a circulates, a safe ball passage 602 through which the game ball B received at the safe ball receiving port 600b circulates, a foul ball passage 603 through which the game ball B received at the foul ball receiving port 600c circulates, and a ball storage passage 604 that communicates with the downstream ends of the out ball passage 601, the safe ball passage 602, and the foul ball passage 603, and the downstream end of which is the ball discharge port 600d.

[0281] Furthermore, the circulating ball path unit 600 includes an out-ball sensor 605 that detects each game ball B (out ball) flowing through the out-ball passage 601, a safe-ball sensor 606 that detects each game ball B (safe ball) flowing through the safe-ball passage 602, and a foul-ball sensor 607 that detects each game ball B (foul ball) flowing through the foul-ball passage 603. The safe-ball sensor 606 is equivalent to the all-win-port sensor in a conventional pachinko machine and can be used to determine cheating by comparing it with the total number of winning balls in all the win ports.

[0282] The circulating ball path unit 600 includes a flat ball receiving front plate 610, a ball receiving front member 611 attached to the rear side of the ball receiving front plate 610, and a ball receiving rear member 612 attached to the rear side of the ball receiving front member 611. A ball storage passage 604 is provided below the ball receiving front plate 610, the ball receiving front member 611, and the ball receiving rear member 612.

[0283] In addition, the circulating ball path unit 600 includes a ball meandering member 613 provided below the ball receiving front plate 610, the ball receiving front member 611, and the ball receiving rear member 612 and open upward, a meandering cover 614 covering the upper part of the ball meandering member 613, a ball discharge shutter 615 for discharging the game ball B from the ball meandering member 613, a magnet 616 attached to the ball discharge shutter 615, a circulating ball path relay board 617 attached to the rear side of the ball receiving front member 611, and a gauge portion 620 provided on the meandering cover 614.

[0284] The ball receiving front plate 610 extends horizontally and is provided with a foul-ball receiving port 600c that penetrates front to back near the lower part at the center in the left-right direction.

[0285] The ball receiving front member 611 forms an out ball receiving port 600a in cooperation with the ball receiving front plate 610 on the upper surface. The ball receiving front member 611 is formed with an out ball passage 601 and a foul ball passage 603 in a state of being open forward, and the front sides thereof are closed when the ball receiving front plate 610 is attached. The downstream end of the out ball passage 601 opens downward at the lower left end of the ball receiving front member 611. The opening of the downstream end of the out ball passage 601 is located in front of the opening of the downstream end of the safe ball passage 602. The downstream end of the foul ball passage 603 opens downward at a position in the ball receiving front member 611 that is lower right than the downstream end of the out ball passage 601.

[0286] The ball receiving front member 611 includes an upper out ball receiving plate portion 611a that is inclined downward to the right from the middle of the vertical wall forming the left end edge of the out ball receiving port 600a to near the center in the left-right direction, and a lower out ball receiving plate portion 611b that is inclined downward to the left from a position below the upper out ball receiving plate portion 611a in the vertical wall forming the right end edge of the out ball receiving port 600a to near the lower part of the left end edge of the out ball receiving port 600a, and a crank portion 611c that extends in a crank shape downward to the lower left from the left end of the lower out ball receiving plate portion 611b with a width through which the game balls B can flow in a row.

[0287] The height between the right end of the upper out ball receiving plate portion 611a and the lower out ball receiving plate portion 611b is approximately twice the diameter of the game ball B, and thereby the height of the lower out ball receiving plate portion 611b on the left side is formed to be lower toward the left. Thereby, the game balls B received in the out ball receiving port 600a can be aligned in one row.

[0288] An out ball sensor 605 is attached to a portion that extends vertically directly below the downstream end of the lower out ball receiving plate portion 611b in the crank portion 611c.

[0289] In the ball receiving front member 611, an out ball passage 601 is formed by an upper out ball receiving plate portion 611a, a lower out ball receiving plate portion 611b, a crank portion 611c, and the like. Therefore, the upstream side of the out ball passage 601 is widely formed so as to be able to receive a large number of game balls B, and the received game balls B are aligned in a row and delivered to the downstream ball storage passage 604 (ball meandering member 613).

[0290] Also, in the ball receiving front member 611, the foul ball passage 603 is inclined downward from a position behind the foul ball receiving port 600c to a position on the right side of the left end of the lower out ball receiving plate portion 611b at a position below the upper out ball receiving plate portion 611a and below the lower out ball receiving plate portion 611b. After that, it extends downward for a short distance. In the ball receiving front member 611, a foul ball sensor 607 is attached to a portion extending leftward in the foul ball passage 603. This foul ball passage 603 is formed so that the game balls b flow in a row, and the game balls B that have flowed through the foul ball passage 603 are delivered to a position downstream of the position where they are delivered from the out ball passage 601 in the ball storage passage 604 (ball meandering member 613).

[0291] The ball receiving front member 611 is provided with a recess 611d that is recessed at a size that does not hinder the flow of the game balls B at the front edge of the upper out ball receiving plate portion 611a, the front edge of the lower out ball receiving plate portion 611b, and the front edge of the bottom wall that forms the foul ball passage 603 and extends left and right. This recess 611d enables the discharge of dust, dirt, and the like in the out ball passage 601 and the foul ball passage 603 to the outside.

[0292] Also, a circulation ball path relay substrate 617 is attached to a portion behind the foul ball passage 603 on the rear surface of the ball receiving front member 611.

[0293] The ball receiving rear member 612 forms a safety ball receiving port 600b in cooperation with the ball receiving front member 611 on the upper surface. A safety ball passage 602 is formed in the ball receiving rear member 612 in a state of being open forward, and the front side of the safety ball passage 602 is closed by attaching the ball receiving front member 611. The downstream end of the safety ball passage 602 opens downward at the lower left end of the ball receiving rear member 612. The opening of the downstream end of the safety ball passage 602 is located behind the opening of the downstream end of the out ball passage 601. That is, the opening of the downstream end of the out ball passage 601 and the opening of the downstream end of the safety ball passage 602 are arranged side by side in the front-rear direction.

[0294] The ball receiving rear member 612 has an upper safety ball receiving plate portion 612a that is inclined downward to the right from the middle of the vertical wall forming the left end edge of the safety ball receiving port 600b to near the center in the left-right direction, a lower safety ball receiving plate portion 612b that is inclined downward to the left from a portion below the upper safety ball receiving plate portion 612a in the vertical wall forming the right end edge of the safety ball receiving port 600b to near the lower part of the left end edge of the safety ball receiving port 600b, and a crank portion 612c that extends in a crank shape downward to the left from the left end of the lower safety ball receiving plate portion 612b with a width allowing the game balls B to flow in a row.

[0295] The height between the right end of the upper safety ball receiving plate portion 612a and the lower safety ball receiving plate portion 612b is about twice the diameter of the game ball B, and thus the height of the lower safety ball receiving plate portion 612b on the left side is formed to be lower toward the left. Thereby, the game balls B received in the safety ball receiving port 600b can be aligned in one row.

[0296] A safety ball sensor 606 is attached to a portion that extends vertically directly below the downstream end of the lower safety ball receiving plate portion 612b in the crank portion 612c.

[0297] In the ball receiving rear member 612, a safe ball passage 602 is formed by the upper safe ball receiving plate portion 612a, the lower safe ball receiving plate portion 612b, the crank portion 612c, and the like. Therefore, the safe ball passage 602 is widely formed so that the upstream side can receive a large number of game balls B, and the received game balls B are aligned in a row and delivered to the most upstream portion of the downstream ball storage passage 604 (ball meandering member 613).

[0298] The ball receiving rear member 612 is provided with recessed portions 612d that are recessed at the front edge of the upper safe ball receiving plate portion 612a and the front edge of the lower safe ball receiving plate portion 612b with a size that does not obstruct the flow of the game balls B. These recessed portions 612d enable the discharge of dust, dirt, etc. inside the safe ball passage 602 to the outside.

[0299] The ball meandering member 613 extends in the left - right direction such that its right - end side is lower while meandering back and forth, and forms a ball storage passage 604 capable of storing a large number of game balls B. As shown in FIG. 38 and the like, the ball meandering member 613 includes a first straight portion 613a that is inclined so as to be lower toward the front with its rear portion as the upstream end, a first turning portion 613b that bends rightward from the downstream end (front end) of the first straight portion 613a and then bends further rearward so as to be lower, a second straight portion 613c that extends from the downstream end (rear end) of the first turning portion 613b rearward to a position near the rear end of the first straight portion 613a so as to be lower, a second turning portion 613d that bends rightward from the downstream end (rear end) of the second straight portion 613c and then bends further forward so as to be lower, a third straight portion 613e that extends from the downstream end (front end) of the second turning portion 613d forward to the same position as the front end of the second straight portion 613c so as to be lower, a third turning portion 613f that bends rightward from the downstream end (front end) of the third straight portion 613e and then bends further rearward so as to be lower, a fourth straight portion 613g that extends from the downstream end (rear end) of the third turning portion 613f rearward to the same position as the rear end of the third straight portion 613e so as to be lower, a fourth turning portion 613h that bends rightward from the downstream end (rear end) of the fourth straight portion 613g and then bends further forward so as to be lower, a fifth straight portion 613i that extends from the downstream end (front end) of the fourth turning portion 613h forward to the same position as the front end of the fourth straight portion 613g so as to be lower, a first bending portion 613j that bends rightward from the downstream end (front end) of the fifth straight portion 613i so as to be lower, a first horizontal portion 613k that extends rightward from the downstream end (right end) of the first bending portion 613j so as to be lower, a second bending portion 613l that bends rearward from the downstream end (right end) of the first horizontal portion 613k so as to be lower, a sixth straight portion 613m that extends from the downstream end (rear end) of the second bending portion 613l rearward to a position near the downstream end of the fifth straight portion 613i so as to be lower, a third bending portion 613n that bends rightward from the downstream end (rear end) of the sixth straight portion 613m so as to be lower, and a second horizontal portion 613o that extends rightward from the downstream end (right end) of the third bending portion 613n so as to be lower. The opening at the downstream end of the second horizontal portion 613o forms a ball discharge port 600d that opens rightward.

[0300] In the ball meandering member 613 (ball storage passage 604), above the rear end of the first straight portion 613a, the opening of the downstream end of the safe ball passage 602 is located, and in front of that, the opening of the downstream end of the out ball passage 601 is located. Also, above the rear end of the second straight portion 613c, the opening of the downstream end of the foul ball passage 603 is located.

[0301] Further, the ball meandering member 613 includes a ball outlet 613p that penetrates vertically in the first horizontal portion 613k, a pair of rail portions 613q that extend forward and backward along the left and right end edges of the ball outlet 613p on the lower surface of the first horizontal portion 613k and project downward, support pieces 613r that project so as to approach each other from the lower ends of the pair of rail portions 613q, locking portions 613s provided on the side surfaces facing each other in the pair of rail portions 613q, and a plurality of slits 613t provided through the rolling surface (bottom surface) on which the game ball B rolls.

[0302] The ball outlet 613p of the ball meandering member 613 is closed so as to be openable and closable by a ball outlet shutter 615, although details will be described later. The pair of rail portions 613q extend rearward from the ball outlet 613p. The pair of rail portions 613q slidably support the ball outlet shutter 615 in the front-rear direction. The two support pieces 613r prevent the ball outlet shutter 615 from falling. Also, the two support pieces 613r project from the respective rail portions 613q at the portion of the ball outlet 613p. Thereby, even when the load of the game ball B acts on the ball outlet shutter 615 through the ball outlet 613p, the ball outlet shutter 615 can be sufficiently supported, preventing the ball outlet shutter 615 from falling off. The locking portion 613s can hold the ball outlet shutter 615 in the open position by locking the locking projection 615f of the ball outlet shutter 615.

[0303] The slit 613t of the ball meandering member 613 penetrates downward with a size that does not obstruct the flow of the game ball B, and can discharge dust, dirt, etc. inside the ball storage passage 604. The slit 613t provided at the portion of the turning portion or the bent portion is provided at the outer portion of the curve.

[0304] Note that the ball meandering member 613 is provided with a circulation ball shortage sensor 621 and a circulation ball excess sensor 622 that can detect the circulating game balls B, details of which will be described later.

[0305] According to this ball meandering member 613, it is possible to form a ball storage passage 604 that meanders back and forth and extends in the left - right direction so as to be lower on the right side. Further, since the ball meandering member 613 is provided with a plurality of turning portions (first turning portion 613b, second turning portion 613d, third turning portion 613f, fourth turning portion 613h) and a plurality of bending portions (first bending portion 613j, second bending portion 613l, third bending portion 613n), the flow rate of the game balls B can be suppressed at these portions, and the impact applied to the inlet side of the ball lifting unit 650 can be alleviated.

[0306] The meandering cover 614 is attached to the ball meandering member 613 so as to cover the open upper end of the ball meandering member 613. By attaching the meandering cover 614 to the ball meandering member 613, it is possible to prevent the game balls B from leaking out of the ball meandering member 613 (ball storage passage 604), and to prevent game balls B that do not correspond to the ball storage passage 604 or illegal game balls B from entering the ball storage passage 604 from the outside.

[0307] The length of the portion extending in the front - rear direction at the left end of the meandering cover 614 is formed shorter than the first straight portion 613a of the ball meandering member 613 toward the rear. As a result, when the meandering cover 614 is attached to the ball meandering member 613, the rear part of the first straight portion 613a of the ball meandering member 613 is in an open state upward, and it becomes possible to communicate with the out - ball passage 601 and the safe - ball passage 602 through that portion.

[0308] Further, the meandering cover 614 has an opening 614a that penetrates vertically at a position above the vicinity of the rear end of the second straight portion 613c in the ball meandering member 613. Through this opening 614a, the foul - ball passage 603 can communicate with the ball storage passage 604.

[0309] The ball extraction shutter 615 is for extracting (discharging) the game ball B (circulating game ball) from the circulating ball path unit 600 etc., and is slidably attached to the lower surface of the ball meandering member 613 in the front-rear direction. The ball extraction shutter 615 includes a flat plate-shaped door portion 615a capable of closing the ball extraction port 613p, a knob portion 615b extending vertically, horizontally, and laterally from the front edge of the door portion 615a, a pair of paddle portions 615c respectively extending rearward from the rear ends of both left and right sides of the door portion 615a, a connecting portion 615e forming an opening 615d that penetrates vertically by connecting the pair of paddle portions 615c behind the door portion 615a, locking protrusions 615f bulging from the outer surfaces of the pair of paddle portions 615c between the connecting portion 615e and the rear ends, hook portions 615g extending outward from each other from the rear ends of the pair of paddle portions 615c, and a magnet support portion 615h protruding cylindrically from the lower surface of the door portion 615a.

[0310] The magnet support portion 615h of the ball extraction shutter 615 can support the cylindrical magnet 616 by inserting the cylindrical magnet 616 into the cylinder. The magnet support portion 615h is provided on the upstream side of the opening 615d. This magnet support portion 615h has a portion protruding into the cylinder at the lower end and is open to the rear. By inserting the magnet 616 from the rear, the portion protruding below the magnet 616 is positioned, and the magnet 616 does not fall from the magnet support portion 615h.

[0311] When the ball extraction shutter 615 is attached to the ball meandering member 613, a pair of rail portions 613q of the ball meandering member 613 are located on both left and right outer sides of the door portion 615a and the pair of paddle portions 615c, and the lower surface of the first transverse portion 613k and the upper surfaces of the pair of support pieces 613r are located on both upper and lower sides of the door portion 615a and the pair of paddle portions 615c. Thereby, the ball extraction shutter 615 is slidable in the front-rear direction between a closed position and an open position described later.

[0312] In its normal state, as shown in FIGS. 39(a1) and (a2), the ball release shutter 615 is in a closed position where the ball release opening 613p is blocked by the door portion 615a so that the game ball B cannot pass through. In this state, the rear surface of the knob portion 615b abuts against the front surface of the first horizontal portion 613k, and the pair of locking protrusions 615f are in contact with the respective rear end surfaces of the pair of rail portions 613q. As a result, the ball release shutter 615 is restricted from moving in the front-rear direction and is held in the closed position. Therefore, when the ball release shutter 615 is in the closed position, the game ball B is not discharged from the ball release opening 613p to the lower ball receiving tray 720 (see FIG. 20).

[0313] Also, when the ball release shutter 615 is in the closed position, the magnet support portion 615h (magnet 616) is located below the vicinity of the upstream end of the ball release opening 613p. Although details will be described later, when the iron ball SB (see FIG. 44) flows through the ball storage passage 604, the iron ball SB is magnetically attached to the door portion 615a by the magnetic force of the magnet 616, resulting in ball jamming, and it becomes possible to detect the mixing of the iron ball SB.

[0314] When the knob portion 615b of the ball release shutter 615 in the closed position is grasped and pulled forward, the locking protrusion 615f provided on the lever portion 615c strongly abuts against the rear end surface of the rail portion 613q. At this time, the lever portion 615c is elastically deformed inward by the force applied to the locking protrusion 615f, and the locking protrusion 615f moves to the inner surface side of the rail portion 613q, causing the ball release shutter 615 to slide forward from the closed position. When the locking protrusion 615f reaches the locking portion 613s, the locking protrusion 615f is locked to the locking portion 613s by the elastic force of the lever portion 615c, and the hook portion 615g provided at the rear end of the lever portion 615c approaches the rear end surface of the rail portion 613q. As a result, the ball release shutter 615 is in a state where further forward sliding is restricted.

[0315] In this state, as shown in FIGS. 39(b1) and (b2), the opening 615d of the ball discharge shutter 615 coincides with the ball discharge port 613p, and the game ball B can pass through the ball discharge port 613p. That is, the ball discharge shutter 615 is in the open position. When the ball discharge shutter 615 is in the open position, the game ball B on the upstream side of the ball discharge port 613p in the ball storage passage 604 is discharged through the ball discharge port 613p and the opening 615d to the lower ball receiving tray 720. As a result, it becomes possible to extract the circulating game ball B to the outside.

[0316] Then, when the game balls B accumulate in the ball receiving tray 720 and become heavy, the ball receiving tray 720 is placed on the bottom wall of the tray insertion recess 501f that is inclined so that the front end side is lowered. Therefore, due to the inclination of the bottom wall, it tries to slide forward, but the sliding forward is blocked by the locking of the locking claw 501n. In this state, when the locking of the locking claw 501n is released, the ball receiving tray 720 automatically slides forward due to the weight of the stored game balls B, and the ball receiving tray 720 can be easily taken out from the tray insertion recess 501f.

[0317] Note that in the state where the ball discharge shutter 615 is assembled to the pachinko machine 1, the rear surface of the door frame 3 is close to the front surface of the knob portion 615b. Even if the ball discharge shutter 615 tries to slide forward for some reason, the knob portion 615b abuts against the door frame 3, and the sliding to the open position is blocked. As a result, the circulating game ball B will not accidentally escape, and no illegal game ball B will enter through the ball discharge port 613p.

[0318] The magnet 616 is formed in a cylindrical shape that can be inserted into the magnet support portion 615h of the ball discharge shutter 615. This magnet 616 is for attracting the iron ball SB. The magnet 616 uses a magnet with a strong magnetic force such as a neodymium magnet.

[0319] Incidentally, in a game hall or the like, when the pachinko machine 1 of the present embodiment and a conventional pachinko machine that allows a player to touch a game ball (steel ball SB) are mixed, there is a risk that the steel ball SB may be mixed in when the game ball B is replenished or replaced by maintenance or the like of the pachinko machine 1 of the present embodiment.

[0320] On the other hand, in this pachinko machine 1, when the steel ball SB is mixed in, since the magnet 616 is provided on the ball discharge shutter 615, when the steel ball SB flows through the ball storage passage 604, on the upper surface of the door portion 615a of the ball discharge shutter 615 in the closed position, the steel ball SB is magnetically attracted and stopped by the magnetic force of the magnet 616. At this time, since the magnet 616 with a strong magnetic force is used, even if a force to press downstream acts due to a large number of game balls B accumulating on the upstream side of the magnetically attracted steel ball SB, the steel ball SB does not move from the upper surface of the door portion 615a.

[0321] Then, when the firing of the game ball B from the ball firing unit 550 continues in a state where the steel ball SB is magnetically attached to the door portion 615a (magnet 616) of the ball discharge shutter 615 in the ball storage passage 604, the game balls B on the downstream side of the magnetically attached steel ball SB are sequentially consumed, and the consumed (fired) game balls B are sequentially supplied to the upstream side of the steel ball SB. Therefore, detection of the game ball B by the circulation ball shortage sensor 621, the lifting inlet sensor 653, etc. provided downstream of the ball discharge shutter 615 becomes OFF, and detection of the game ball B by the circulation ball excess sensor 622, the out ball sensor 605, the safe ball sensor 606, the foul ball sensor 607, etc. provided upstream of the ball discharge shutter 615 becomes ON. Thereby, it is possible to detect and notify that a ball jam has occurred between the circulation ball shortage sensor 621 etc. and the circulation ball excess sensor 622 etc. That is, it is possible to detect that the steel ball SB is magnetically attached to the door portion 615a.

[0322] With the iron ball SB magnetically attached to the upper surface of the door portion 615a of the ball extraction shutter 615 by the magnetic force of the magnet 616, when the ball extraction shutter 615 is slid from the closed position to the forward open position, the front end of the iron ball SB magnetically attached to the upper surface of the door portion 615a abuts against the front wall of the first horizontal portion 613k, and only the iron ball SB is prevented from moving forward. Then, when the magnet 616 moves forward from the front wall of the first horizontal portion 613k, the magnetic force acting on the iron ball SB becomes weaker and the iron ball SB starts to roll downstream. At this time, the opening 615d of the ball extraction shutter 615 coincides with the ball extraction port 613p, and since the game ball B can pass through the ball extraction port 613p, the iron ball SB can be discharged from the ball extraction port 613p to the lower ball receiving tray 720 and can be taken out from the ball storage passage 604.

[0323] The circulating ball path relay board 617 is attached at a position behind the ball receiving front member 611 at a portion behind the far ball passage 603 and at a position below the out ball receiving plate portion 611b of the ball receiving rear member 612. The circulating ball path relay board 617 is for relaying the connection between the out ball sensor 605, the safe ball sensor 606, the far ball sensor 607, the circulating ball shortage sensor 621, the circulating ball excess sensor 622, and the frame control board 740 described later.

[0324] The gauge portion 620 indicates an appropriate amount region of a predetermined length with respect to the flow direction of the ball storage passage 604 in the ball meandering member 613. Here, the state where the rear end of the row of game balls B stored in a lined-up state is applied to the gauge portion 620 is regarded as an appropriate amount. The gauge portion 620 enables visual confirmation of the appropriate amount of the game balls B (circulating balls) and is formed by a partially colored transparent seal. This gauge portion 620 is attached to the upper surface of the meander cover 614. More specifically, it is attached to a portion on the upper surface of the meander cover 614 that is upstream of the first horizontal portion 613k of the ball meandering member 613. As shown in FIG. 42, characters and symbols (arrows) indicating the appropriate range (appropriate amount region) of the storage amount of the game balls B are described on this gauge portion 620.

[0325] The gauge unit 620 is composed of three seals: an upper gauge seal 620a attached to a portion above the third straight portion 613e and the third turning portion 613f in the ball meandering member 613, a middle gauge seal 620b attached to a portion above the fourth straight portion 613g, and a lower gauge seal 620c attached to a portion above the fifth straight portion 613i and the first bending portion 613j.

[0326] On the upper gauge seal 620a, there is a line extending horizontally near the center in the front-rear direction in the third straight portion 613e, an arrow with a rod portion extending along the passage from the tip of the arrowhead portion downstream (front side) of the line to the downstream end of the third turning portion 613f with the tip of the arrowhead portion facing the line, and the characters "UP TO HERE" on the right side downstream of the arrowhead portion of the arrow.

[0327] On the middle gauge seal 620b, there is a rod-shaped portion extending rearward (downstream) so as to continue with the rod portion of the arrow on the upper gauge seal 620a, and the characters "APPROPRIATE RANGE" near the upstream end corresponding to the rod-shaped portion.

[0328] On the lower gauge seal 620c, there is a line extending in the front-rear direction at the downstream end of the first bending portion 613j, an arrow with a rod portion extending along the passage from the tip of the arrowhead portion upstream of the line to the upstream end of the fifth straight portion 613i with the tip of the arrowhead portion facing the line, and the characters "FROM HERE" on the right side upstream of the arrowhead portion of the arrow.

[0329] When looking at the gauge unit 620 during maintenance or the like, if the game ball B cannot be seen in the portion of the gauge unit 620 (appropriate amount region), that is, in the region from the line of the upper gauge seal 620a to the line of the lower gauge seal 620c, it can be determined that the game ball B is too few, that is, less than the appropriate amount. When replenishing the game ball B, the game ball B is inserted from the out port 1008 of the game board 5, or from the out ball receiving port 600a or the safe ball receiving port 600b until it reaches the appropriate amount.

[0330] On the one hand, when looking at the gauge section 620, if the game ball B can be seen at all parts of the gauge section 620, that is, if the rear end of the row of game balls B is upstream of the "up to here" part (the line of the upper gauge seal 620a), it can be determined that there are too many game balls B, that is, more than the appropriate amount. When there are too many game balls B, the ball discharge shutter 615 is pulled forward and slid to the open position to discharge the game balls B in the ball storage passage 604 from the ball discharge port 613p to make the amount appropriate.

[0331] As described above, according to the gauge section 620 of the present embodiment, it is possible to visually determine whether the stored game balls B are appropriate (in an appropriate amount), and it is possible to easily make the amount of the stored game balls B appropriate.

[0332] In the above embodiment, the gauge section 620 is shown as one in which a seal is attached to the meandering cover 614. However, the appropriate amount area may be colored in a different color from other parts, or the molded colors of the parts of the gauge section 620 may be made different, or the gauge section 620 may be one in which colored lines are drawn at the downstream end and the upstream end of the appropriate amount area.

[0333] Also, in the above embodiment, the gauge section 620 is shown as being provided upstream of the ball discharge shutter 615. However, the present invention is not limited to this. As shown by the two-dot chain line in FIG. 62, the downstream end of the gauge section 620 may be provided near the upstream of the circulation ball shortage sensor 621 downstream of the ball discharge shutter 615.

[0334] The circulation ball path unit 600 of the present embodiment is formed of a transparent synthetic resin including a ball receiving front plate 610, a ball receiving front member 611, a ball receiving rear member 612, a ball meandering member 613, and a meandering cover 614. Therefore, it is possible to visually recognize the internal state from the outside.

[0335] The circulating ball path unit 600 has an out ball sensor 605 and a foul ball sensor 607 attached in a state of being sandwiched between a ball receiving front plate 610 and a ball receiving front member 611, and a safe ball sensor 606 is attached in a state of being sandwiched between the ball receiving front member 611 and a ball receiving rear member 612. The out ball sensor 605 and the safe ball sensor 606 are provided side by side in the front-rear direction.

[0336] The out ball sensor 605, the safe ball sensor 606, the foul ball sensor 607, the circulating ball shortage sensor 621, and the circulating ball excess sensor 622 detect the game ball B non-contact, for example, by detecting a change in induced current.

[0337] The circulating ball path unit 600 is attached to the base wall portion 501b of the main body frame base 501 from the rear side. In a state where the circulating ball path unit 600 is assembled to the main body frame 4, the out ball receiving port 600a and the safe ball receiving port 600b are attached at the same height as the upper surface of the base wall portion 501b and in contact with the rear edge of the upper surface of the base wall portion 501b.

[0338] Also, in a state where the circulating ball path unit 600 is assembled to the main body frame 4, it is attached so that the ball feeding unit 700 is positioned between it and the base wall portion 501b.

[0339] Furthermore, in a state where the circulating ball path unit 600 is assembled to the main body frame 4, a portion of the ball meandering member 613 and the meandering cover 614 in front of the center in the front-rear direction penetrates the ball storage passage insertion port 501g provided in the base wall portion 501b from the rear and protrudes forward. Thereby, when the door frame 3 is opened with respect to the main body frame 4, the game ball B in the ball meandering member 613 (ball storage passage 604) can be visually recognized from the front (outside).

[0340] Further, when the frame substrate unit 730 is opened rearward in a state where the circulating ball path unit 600 is assembled to the main body frame 4, the inside of each of the parts behind the base wall portion 501b in the out ball passage 601, the safe ball passage 602, the fair ball passage 603, and the ball storage passage 604 can be visually recognized from the rear. Thereby, when a ball jam occurs, by opening the frame substrate unit 730, the inside of the out ball passage 601 or the like can be confirmed, and it is easy to specify the location where the ball jam occurs.

[0341] Further, in a state where the circulating ball path unit 600 is assembled to the main body frame 4, the second horizontal portion 613o of the ball meandering member 613 is located at a position behind the base wall portion 501b and below the ball launch unit 550. That is, in the circulating ball path unit 600, the ball discharge port 600d opens rearward of the base wall portion 501b, at a position lower than the ball launch unit 550, and toward the right. This ball discharge port 600d communicates with the ball lifting inlet passage 651 of the ball lifting unit 650 described later.

[0342] The circulating ball path unit 600 of the present embodiment has a circulating ball shortage sensor 621 for detecting that the stored game balls B (circulating balls) are too few, and a circulating ball excess sensor 622 for detecting that the stored game balls B (circulating balls) are too many (see FIG. 62).

[0343] The circulating ball shortage sensor 621 is provided downstream of the gauge portion 620 in the ball storage passage 604. Note that the circulating ball shortage sensor 621 may be provided near the upstream side of the ball removal shutter 615. The circulating ball excess sensor 622 is provided near the upstream end of the gauge portion 620 in the ball storage passage 604. The circulating ball shortage sensor 621 and the circulating ball excess sensor 622 are connected to the frame control substrate 740 via the circulating ball path relay substrate 617.

[0344] As will be described later, when the number of game balls B is appropriate, the circulating ball shortage sensor 621 detects the game ball B for a predetermined time (e.g., 80 ms) or more, and the circulating ball excess sensor 622 does not detect the game ball B for a predetermined time (e.g., 80 ms) or more. When the number of game balls B is insufficient, neither the circulating ball shortage sensor 621 nor the circulating ball excess sensor 622 detects the game ball B for a predetermined time (e.g., 80 ms) or more. On the other hand, when the number of game balls B is excessive, both the circulating ball shortage sensor 621 and the circulating ball excess sensor 622 detect the game ball B for a predetermined time (e.g., 80 ms) or more. When the circulating ball shortage sensor 621 does not detect the game ball B for a predetermined time (e.g., 80 ms) or more and the circulating ball excess sensor 622 detects the game ball B for a predetermined time (e.g., 80 ms) or more, a ball jam including the mixing of steel balls SB has occurred between the circulating ball shortage sensor 621 and the circulating ball excess sensor 622.

[0345] Here, the reason for the predetermined time k80 ms as the threshold value for detecting the presence or absence of the game ball B will be explained. For example, on the circulation path R, the positions where sensors such as the circulating ball excess sensor 622, the circulating ball shortage sensor 621, the lifting inlet sensor 653, the lifting outlet sensor 654, and the shooter front sensor 704 are placed are the stop positions of the game ball B when the ball lifting unit 650, the ball feeding unit 700, etc. are stopped. This position is the position where the next game ball B is located every time one game ball B is sent. Therefore, the detection of the game ball B here is based on the detection method of whether it has been detected for 80 ms or more. This is because the time when the game ball B rolling on an inclined plane with an inclination of about 5 degrees is detected is about 50 ms, so a margin is added to ensure that the game ball B is surely detected at that position, and it is detected at 80 ms. That is, the value of 80 ms is a practical value obtained through experiments.

[0346] In this way, based on the combination of the detection states of the game ball B by the circulating ball shortage sensor 621 and the circulating ball excess sensor 622, it is possible to automatically judge and notify the amount of the game ball B, ball jams, etc. on the frame control board 740.

[0347] In the above-described embodiment, the circulation ball shortage sensor 621 and the circulation ball excess sensor 622 are provided. However, the circulation ball shortage sensor 621 may be substituted with a lifting inlet sensor described later, and the circulation ball excess sensor 622 may be substituted with the out ball sensor 605, the safe ball sensor 606, and the fair ball sensor 607.

[0348] [4-4a. Ball clogging elimination mechanism] Next, in the circulation ball path unit 600, a ball clogging elimination mechanism 630 may be provided to facilitate the elimination of ball clogging at the out ball sensor 605 or the safe ball sensor 606 as shown in FIG. 43. FIG. 43(a) is an explanatory diagram showing an enlarged main part of a rear cross section cut at the position of the out ball sensor with the lid member of the ball elimination mechanism closed in the circulation ball path unit attached to the main body frame, and (b) is an explanatory diagram showing the state with the lid member opened in (a).

[0349] The ball clogging elimination mechanism 630 is configured such that in the ball receiving front member 611 and the ball receiving rear member 612 in the circulation ball path unit 600, the wall portion above the out ball sensor 605 and the safe ball sensor 606 is formed as an openable and closable lid member 631. As shown in FIG. 43(a), the lid member 631 is normally closed. The lid member 631 is held in the closed state by being locked by a locking claw (not shown).

[0350] This ball clogging elimination mechanism 630 is used to eliminate ball clogging that occurs in the out ball passage 601 or the safe ball passage 602, or when an illegal ball B' with a larger diameter than the game ball B is inserted as an illegal act and the out ball sensor 605 or the like is blocked.

[0351] For example, when an illegal ball B' with a larger diameter than the game ball B is inserted from the out port 1008 of the game board 5 and the out ball sensor 605 is blocked, when the main body frame 4 is opened with respect to the outer frame 2 and then the frame substrate unit 730 is opened, the rear part of the circulating ball path unit 600 appears. And in this embodiment, since a gap into which a finger can be inserted is formed between the part where the ball jamming elimination mechanism 630 in the circulating ball path unit 600 is provided and the box main body part 504b of the main body frame speaker box 504, the locking claw of the lid member 631 is released through the gap, and the lid member 631 can be opened by rotating it so that the lower end of the lid member 631 moves upward (see Fig. 43(b)).

[0352] And by setting the lid member 631 in an open state, a finger can be inserted into the upper part of the out ball sensor 605 in the out ball passage 601, and the illegal ball B' blocking the out ball sensor 605 can be easily taken out. In this way, the illegal ball B' can be easily taken out without removing the circulating ball path unit 600 that is screwed using a driver.

[0353] In addition, when the safe ball sensor 606 is blocked by the illegal ball B', the illegal ball B' can be taken out by the same procedure as above.

[0354] In the above description, a lid member 631 that can be opened and closed is provided as the ball jamming elimination mechanism 630. However, for example, elastic claws may be provided on the ball receiving rear member 612 and the ball receiving front member 611, and the ball receiving rear member 612 and the ball receiving front member 611 may be detachably attached rearward by locking the elastic claws. In this case, in the normal state, the frame substrate unit 730 is located behind the circulating ball path unit 600, and even if the locking of the elastic claws is loosened, the ball receiving rear member 612 and the ball receiving front member 611 will not come off rearward. And when the out ball sensor 605 is blocked by the illegal ball B', when the main body frame 4 is opened with respect to the outer frame 2 and then the frame substrate unit 730 is opened, the rear part of the circulating ball path unit 600 appears. Therefore, by releasing the locking of the elastic claws that attach the ball receiving rear member 612 and the ball receiving front member 611, the ball receiving rear member 612 and the ball receiving front member 611 can be easily removed, and the illegal ball B' blocking the out ball sensor 605 can be easily taken out.

[0355] Alternatively, as the ball jamming elimination mechanism 630, in the ball receiving front member 611 sandwiched between the ball receiving front plate 610 and the ball receiving rear member 612, the portion above the out ball sensor 605 may be slid upward and removed. In this case, in the normal state, the game board 5 is located above the circulating ball path unit 600, and due to the action of gravity, the slidable portion of the ball receiving front member 611 will not come off upward. And when the out ball sensor 605 is blocked by the illegal ball B', when the door frame 3 is opened with respect to the main body frame 4 and the game board 5 is removed from the main body frame 4, the upper part of the circulating ball path unit 600 appears. Therefore, by sliding the slidable portion of the ball receiving front member 611 upward and removing it, the illegal ball B' blocking the out ball sensor 605 can be easily taken out.

[0356] [4-4b. Ball Extraction Shutter of the Second Embodiment] Next, in the circulating ball path unit 600, as shown in FIG. 44, in the ball removal shutter 615, the magnet 616 may be attached to a portion in front of the opening 615d. FIG. 44(a) is an explanatory side sectional view showing the ball meandering member and the ball removal tray together with the iron ball magnetically attached to the ball removal shutter in the closed position, (b) is an explanatory side sectional view showing the ball meandering member and the ball removal tray together with the iron ball magnetically attached to the ball removal shutter in the open position, and (c) is an explanatory side sectional view showing the ball meandering member and the ball removal tray together with the iron ball magnetically attached to the lower surface with the ball removal shutter slid from the state of (b) to the closed position. This ball removal shutter 615 is configured such that the rear end side of the outer peripheral surface of the magnet 616 supported by the magnet support portion 615h coincides with the front inner peripheral surface in the opening 615d.

[0357] According to the ball removal shutter 615 of the second embodiment, as shown in FIG. 44(a), when the ball removal shutter 615 is slid from the closed position to the forward open position with the iron ball SB magnetically attached to the upper surface of the door portion 615a of the ball removal shutter 615 by the magnetic force of the magnet 616, the front end of the iron ball SB magnetically attached to the upper surface of the door portion 615a abuts against the front wall of the first horizontal portion 613k, and only the iron ball SB is prevented from moving forward. Then, when the ball removal shutter 615 slides further forward, the door portion 615a that supported the lower end of the iron ball SB disappears, and the iron ball SB moves into the lower opening 615d due to gravity. At this time, since the rear end side of the outer peripheral surface of the magnet 616 coincides with the front inner surface of the opening 615d, the iron ball SB is in a state of being magnetically attached to the outer peripheral surface of the magnet 616 (see FIG. 44(b)).

[0358] Note that the iron ball SB tries to move from the outer peripheral surface of the magnet 616 to the side with a strong magnetic force (here, the lower end surface side), but when the ball removal shutter 615 is in the open position, the upper end surface of the ball receiving tray 720 is located below the magnet 616, and the iron ball SB does not move below the magnet 616. Therefore, when the ball removal shutter 615 is slid to the open position, the iron ball B is located at a portion overlapping the opening 615d, and the game ball B upstream of the iron ball SB does not pass through the opening 615d, that is, the ball removal port 613p and is not discharged downward.

[0359] After sliding the ball removal shutter 615 to the open position and then sliding the ball removal shutter 615 to the rear closed position, while preventing the game balls B on the upstream side of the iron ball SB from passing through the ball removal port 613p by the door portion 615a, the iron ball SB that was magnetized to the outer peripheral surface of the magnet 616 moves to the lower surface side of the magnet 616, and the iron ball SB is magnetically attached to the lower surface of the magnet 616 (see Fig. 44(c)). Then, the ball receiving tray 720 is pulled out and removed from the tray insertion recess 501f, and the iron ball SB magnetically attached to the lower surface of the magnet 616 is removed.

[0360] In this way, when the ball removal shutter 615 is slid back and forth with the iron ball SB magnetically attached to the door portion 615a of the ball removal shutter 615 by the magnet 616, only the magnetically attached iron ball SB can be taken out from the ball storage passage 604 to the outside.

[0361] [4-5. Ball Lifting Unit] Regarding the ball lifting unit 650 in the main body frame 4, it will be described in detail mainly with reference to Figs. 45 to 54 and the like. Fig. 45(a) is a perspective view of the ball lifting unit in the main body frame seen from the left front, (b) is a perspective view of the ball lifting unit in the main body frame seen from the right front, and (c) is a perspective view of the ball lifting unit in the main body frame seen from the rear. Fig. 46 is an exploded perspective view of the ball lifting unit showing the state where the ball polishing motor base and the cassette pressing piece are opened and the ball polishing cassette is removed. Fig. 47(a) is a plan view of the ball lifting unit shown in a state where the ball polishing cassette is not installed, (b) is a plan view of the ball lifting unit shown together with the ball polishing cassette in a state where the ball polishing motor base and the cassette pressing piece are opened, and (c) is a plan view of the ball lifting unit shown in a state where the ball polishing cassette is installed.

[0362] Further, Fig. 48(a) is an explanatory view showing a state where the door frame is closed with the lock of the ball mill cassette being incomplete, (b) is an explanatory view showing a state where the door frame has moved in the closing direction from the state of (a) and the protruding portion of the door frame is in contact with the tip of the ball mill motor base, and (c) is an explanatory view showing a state where the door frame is closed and the ball mill cut is locked from the state of (b). Fig. 49 is a front view showing an enlarged view of the main part in a state where the ball mill cassette is removed from the ball lifting unit attached to the main body frame. Fig. 50(a) is a right side view showing the main parts of the ball milling mechanism and the ball lifting mechanism in the ball lifting unit, (b) is a rear view showing the main part of the ball lifting mechanism, and (c) is a plan view of the main part of the ball lifting mechanism as viewed from arrow A in (b).

[0363] Furthermore, Fig. 51 is an explanatory view showing the relationship between the lifting spiral shaft and the polishing cloth in the ball lifting unit. Fig. 52(a) is a perspective view showing an enlarged view of the parts of the lifting inlet sensor and the lifting outlet sensor and the ball lifting unit as viewed from the left rear, and (b) is a plane cross-sectional view of the ball lifting unit cut at the part of the lifting inlet sensor. Fig. 53 is an explanatory view schematically showing the parts before and after the ball sensor composed of a photosensor in the ball passage. Fig. 54(a) is a perspective view of the ball mill cassette of the ball lifting unit as viewed from the left front, (b) is a perspective view of the ball mill cassette as viewed from the right rear, and (c) is a right side cross-sectional view of the ball mill cassette cut at the center in the left-right direction.

[0364] The ball lifting unit 650 is for sending the game ball B discharged from the game board 5 and the fare unit 570 and flowing through the circulating ball path unit 600 to the ball launching unit 550 via the ball feeding unit 700. The ball lifting unit 650 is attached to the ball lifting unit attachment portion 501j provided on the rear surface of the base wall portion 501b in the main body frame base 501.

[0365] The ball lifting unit 650 includes a ball lifting mechanism 660 for lifting the game ball B, a ball lifting inlet passage 651 for supplying the game ball B sent from the circulating ball path unit 600 to the ball lifting mechanism 660, a ball lifting outlet passage 652 for supplying the game ball B lifted by the ball lifting mechanism 660 to the ball feeding unit 700, a lifting inlet sensor 653 provided in the ball lifting inlet passage 651 for detecting the circulating game ball B, and a lifting outlet sensor 654 provided in the ball lifting outlet passage 652 for detecting the circulating game ball B.

[0366] Further, the ball lifting unit 650 includes a ball lifting inlet grounding sheet metal 655 provided in the ball lifting inlet passage 651 so as to be in contact with the game ball B, a ball lifting outlet grounding sheet metal 656 provided in the ball lifting outlet passage 652 so as to be in contact with the game ball B, a ball lifting relay board 657 for relaying the connection with the frame control board 740, and a ball grinding mechanism 680 for grinding the game ball B lifted by the ball lifting mechanism 660.

[0367] First, the ball lifting mechanism 660 of the ball lifting unit 650 includes a lifting spiral shaft 661 that extends vertically and has a spiral lifting groove 661a on its outer peripheral surface, a shaft gear 662 attached to the lower end of the lifting spiral shaft 661, a motor gear 663 that meshes with the shaft gear 662 and is rotatable around an axis orthogonal to the axis of the lifting spiral shaft 661, a lifting motor 664 with the motor gear 663 attached to its rotating shaft for rotating the lifting spiral shaft 661, a lifting motor index 665 having a detection portion 665a provided so as to be notched in a part of the circumferential direction extending flange-like from the lower end of the shaft gear 662, and a lifting motor index sensor 666 capable of detecting the detection portion 665a of the lifting motor index 665.

[0368] In addition, the ball lifting mechanism 660 includes a motor base sheet metal 667 to which a lifting motor 664 is attached and which rotatably supports a motor gear 663, and a lifting mechanism base 668 and a lifting mechanism cover 669 which are attached to the motor base sheet metal 667, rotatably support a lifting spiral shaft 661, and are attached to a ball lifting unit attachment portion 501j of a base wall portion 501b in a main body frame base 501.

[0369] The lifting spiral shaft 661 is provided with a spiral lifting groove 661a having a depth capable of accommodating the game balls B in a row on the outer peripheral surface. The lifting spiral shaft 661 is formed with the lifting groove 661a so that when viewed from above in the axial direction (see Fig. 50(c)), the game balls B can be lifted by rotating in the clockwise direction. The pitch of the spiral of the lifting groove 661a is formed longer near the upper and lower ends than between them. The lifting spiral shaft 661 is rotatably supported by the lifting mechanism base 668 and the lifting mechanism cover 669. The rotation axis of the lifting spiral shaft 661 is inclined with respect to the vertical so that the upper end is located to the right of the lower end in a front view. Thereby, the upper end side of the lifting spiral shaft 661 can be moved farther to the right from the ball feeding unit, the length of the ball lifting exit passage 652 can be relatively increased, and the storage amount of the game balls B can be made larger. In the present embodiment, the rotation axis of the lifting spiral shaft 661 is inclined at an angle of 12 degrees with respect to the vertical.

[0370] Furthermore, the lifting spiral shaft 661 will be described in detail. As shown in Fig. 51, the lifting spiral shaft 661 has a small diameter portion 661b having the diameter of the bottom (bottom diameter) in the lifting groove 661a as a bottom diameter D1, and a large diameter portion 661c having a bottom diameter D2 larger than the small diameter portion 661b, and the large diameter portion 661c is provided at an intermediate portion in the axial direction overlapping with the polishing cloth 682 of the ball polishing cassette 681. Note that between the small diameter portion 661b and the large diameter portion 661c of the lifting spiral shaft 661, the diameter is configured to gradually change.

[0371] Further, the lifting spiral shaft 661 has a smaller spiral pitch P2 at the large-diameter portion 661c than the spiral pitch P1 at the small-diameter portion 661b. The smaller the spiral pitch, the slower the lifting speed of the game ball B.

[0372] This lifting spiral shaft 661 is arranged such that a gap S1 smaller than the diameter D of the game ball B is formed between the large-diameter portion 661c and the surface of the abrasive cloth 682 in the ball mill cassette 681.

[0373] By the way, in the lifting spiral shaft 661, if the diameter of the bottom of the lifting groove 661a is configured as the bottom diameter D1 of the small-diameter portion 661b over the entire length, since the bottom diameter D1 is smaller than the bottom diameter D2 of the large-diameter portion 661c, the gap between the bottom of the lifting groove 661a and the abrasive cloth 682 becomes large. Therefore, even if the lifting spiral shaft 661 is rotated to grind the game ball B lifted by the lifting groove 661a with the abrasive cloth 682, the game ball B escapes to the bottom side of the lifting groove 661a due to the large gap with the abrasive cloth 682, and the contact area of the game ball B with the abrasive cloth 682 becomes small, resulting in a decrease in the polishing efficiency.

[0374] On the other hand, in the present embodiment, at the portion overlapping the abrasive cloth 682 of the ball mill cassette 681 in the intermediate portion in the axial direction of the lifting spiral shaft 661, since the bottom diameter D2 of the lifting groove 661a is the large-diameter portion 661c larger than the bottom diameter D1 of the small-diameter portion 661b, the gap from the bottom of the lifting groove 661a in the large-diameter portion 661c to the surface of the abrasive cloth 682 can be made smaller than the gap at the portion of the small-diameter portion 661b. Further, in the present embodiment, the gap S1 from the large-diameter portion 661c to the abrasive cloth 682 is made smaller than the diameter D of the game ball B. For these reasons, at the portion of the large-diameter portion 661c, the game ball B cannot escape to the bottom side of the lifting groove 661a, the game ball B can be pressed against the abrasive cloth 682 by the bottom of the lifting groove 661a, and the abrasive cloth 682 can be recessed together with the ball mill sponge 683 provided on the back side of the abrasive cloth 682. Thereby, the contact area of the abrasive cloth 682 with respect to the game ball B can be increased, and the polishing efficiency of the game ball B can be enhanced.

[0375] Also, in the lifting spiral shaft 661 of the present embodiment, since the pitch P2 of the spiral in the large-diameter portion 661c overlapping the abrasive cloth 682 is made smaller than the pitch P1 of the spiral in the portion of the small-diameter portion 661b, the lifting speed of the game ball B in the large-diameter portion 661c can be slowed down. As a result, the contact time between the game ball B and the abrasive cloth 682 can be lengthened, so that the game ball B can be polished more carefully.

[0376] Furthermore, in the lifting spiral shaft 661 of the present embodiment, since the diameter gradually changes between the small-diameter portion 661b and the large-diameter portion 661c, it is possible to avoid a sudden change in the load applied when lifting the game ball B, and the load in the lifting operation can be reduced.

[0377] Also, as shown in FIG. 50(b), the lifting spiral shaft 661 of the present embodiment is inclined at an angle of 12 degrees with respect to the vertical, so that it intersects the abrasive cloth 682 obliquely. Therefore, the entire width of the abrasive cloth 682 can be used to polish the game ball B, and the abrasive cloth 682 can be used efficiently for polishing.

[0378] Note that, as the lifting spiral shaft 661, one having a large-diameter portion 661c provided in the middle in the axial direction is shown, but the present invention is not limited to this, and only the small-diameter portion 661b may be provided on the lower end side, and the large-diameter portion 661c may be provided up to the upper end on the upper side thereof.

[0379] The shaft gear 662 is a spur gear (worm wheel gear). The motor gear 663 is a worm gear. Thus, even if the hoisting spiral shaft 661 tries to rotate due to the load acting on it because a large number of game balls B are accommodated in the hoisting groove 661a of the hoisting spiral shaft 661, the rotation can be blocked by the motor gear 663 which is a worm gear meshing with the shaft gear 662. Also, since the motor gear 663 is a worm gear, even if the hoisting spiral shaft 661 tries to rotate due to inertia when the drive of the hoisting motor 664 stops, its rotation can be immediately stopped, and overshoot of the game balls B can be prevented.

[0380] In the present embodiment, the shaft gear 662 is formed of POM (polyacetal resin), and the motor gear 663 is formed of a fiber-reinforced plastic containing polyamide carbon fiber. Thereby, the motor gear 663 which is a worm gear is made less likely to be chipped. Note that the motor gear 663 may be made of metal.

[0381] The hoisting motor 664 is a DC motor. The hoisting motor index 665 is integrally formed with the shaft gear 662 in a flange shape. The detection part 665a of the hoisting motor index 665 is provided so that a range of an angle of 45 degrees with respect to the entire circumference is cut out. The hoisting motor index sensor 666 is a photosensor. The hoisting motor index sensor 666 is in a light-receiving state at the part of the detection part 665a in the hoisting motor index 665, and is shielded from light and in a non-light-receiving state at parts other than the detection part 665a. Thereby, it is possible to detect the rotational position of the hoisting spiral shaft 661 via the hoisting motor index 665.

[0382] Incidentally, although details will be described later, the lifting spiral shaft 661 rotates once when the rotating shaft of the lifting motor 664 rotates 32 times by the shaft gear 662 and the motor gear 663. In the lifting motor index sensor 666, when the lifting motor 664 rotates 28 times after being in the non-light-receiving state at a position other than the detection unit 665a, it reaches the detection unit 665a and enters the light-receiving state. When the lifting motor 664 rotates 4 more times after entering the light-receiving state, it moves away from the detection unit 665a and enters the non-light-receiving state. In the present embodiment, the position where the lifting motor 664 has rotated 2 times after reaching the detection unit 665a and entering the light-receiving state is set as the origin. That is, the center of the detection unit 665a is set as the origin of rotation of the lifting spiral shaft 661.

[0383] The motor base sheet metal 667 mounts the lifting motor 664 on the left end side in the front view, and rotatably supports the right end of the motor gear 663 on the right end side. The upper end side of the motor base sheet metal 667 is attached to the lifting mechanism base 668, and the lower end side is attached to the lifting mechanism cover 669.

[0384] The lifting mechanism base 668 accommodates the lifting spiral shaft 661 in cooperation with the lifting mechanism cover 669 and rotatably supports the lifting spiral shaft 661. The lifting mechanism base 668 has a ball grinding port 668a that penetrates front and back so that the lifting spiral shaft 661 faces forward with a size that does not allow the game ball B to pass through, and a cassette mounting recess 668b that is recessed from the front to the rear and has the ball grinding port 668a opening at the bottom surface and can accommodate the rear end side of the ball grinding cassette 681. The ball grinding port 668a extends vertically with a width narrower than the diameter of the game ball B. The ball grinding port 668a is provided so that a part of the game ball B lifted by the lifting spiral shaft 661 protrudes forward, and the part of the game ball B that protrudes forward from the ball grinding port 668a contacts the abrasive cloth 682 of the ball grinding cassette 681 in the ball grinding mechanism 680 attached (mounted) to the cassette mounting recess 668b, thereby grinding the game ball B.

[0385] On the hoisting mechanism base 668, a downstream portion of the ball hoisting inlet passage 651 is provided at a position to the right of the hoisting spiral shaft 661 in a front view near the lower end. The portion of the ball hoisting inlet passage 651 provided on the hoisting mechanism base 668 is inclined such that the upstream end opens rearward and becomes lower toward the lower end of the left hoisting spiral shaft 661. Further, a hoisting inlet sensor 653 is attached to the hoisting mechanism base 668 at a position to the right of the lower end of the hoisting spiral shaft 661 in a front view.

[0386] Also, an upstream portion of the ball hoisting outlet passage 652 is provided near the upper end of the hoisting mechanism base 668. The portion of the ball hoisting outlet passage 652 provided on the hoisting mechanism base 668 is inclined to be lower from the front of the upper end of the hoisting spiral shaft 661 to the left in a front view, then inclined to be lower rearward, and the downstream end opens rearward. For the ball hoisting outlet passage 652, it is inclined to be lower from the rearward opening portion in the hoisting mechanism base 668 to the left, then inclined to be lower forward, and opens forward at the front end. The said portion in the ball hoisting outlet passage 652 is formed by the cooperation of the hoisting mechanism base 668 and the hoisting mechanism cover 669.

[0387] Also, a ball milling motor base 686 to which the ball milling motor 688 of the ball milling mechanism 680 is attached is rotatably attached to the hoisting mechanism base 668 around an axis extending vertically.

[0388] The hoisting mechanism cover 669 cooperates with the hoisting mechanism base 668 to accommodate the hoisting spiral shaft 661 and rotatably supports the hoisting spiral shaft 661, and is attached from the rear to the ball hoisting unit attachment portion 501j of the base wall portion 501b in the main body frame base 501. A ball hoisting relay substrate 657 is attached to the rear surface of the hoisting mechanism cover 669.

[0389] The hoisting mechanism cover 669 is provided with a portion upstream of the portion provided on the hoisting mechanism base 668 in the ball hoisting inlet passage 651. The portion provided on the hoisting mechanism base 668 in the ball hoisting inlet passage 651 has a downstream end that opens forward at a position to the right in the front view near the lower end of the hoisting spiral shaft 661, extends rearward, then bends leftward, passes behind the hoisting spiral shaft 661, and then extends obliquely forward with the upstream end opening leftward. On this hoisting mechanism cover 669, a ball hoisting inlet grounding sheet metal 655 is attached so as to be able to contact the game ball B flowing through the ball hoisting inlet passage 651 behind the lower end of the hoisting spiral shaft 661.

[0390] Also, the hoisting mechanism cover 669 is provided with a portion downstream of the portion provided on the hoisting mechanism base 668 in the ball hoisting outlet passage 652. The portion provided on the hoisting mechanism cover 669 in the ball hoisting outlet passage 652 has an upstream end that opens rearward, bends leftward in the front view, extends leftward to the left end, then bends forward, and has a downstream end that opens forward at the front end of the hoisting mechanism cover 669.

[0391] Also, a hoisting outlet sensor 654 is attached near the left end of the portion extending leftward in the front view in the ball hoisting outlet passage 652 on the hoisting mechanism cover 669. Further, on the hoisting mechanism cover 669, a ball hoisting outlet grounding sheet metal 656 is attached so as to be able to contact the game ball B flowing through the ball hoisting outlet passage 652 at a portion upstream of the hoisting outlet sensor 654 in the portion extending leftward in the ball hoisting outlet passage 652.

[0392] Furthermore, the hoisting mechanism cover 669 has a support protrusion 669a that protrudes forward from a position near the center in the vertical direction at the right end, below the hoisting mechanism base 668, and a locking hole 669b that penetrates through the front surface of the support protrusion 669a and to which the nail latch 694 is locked. When the ball hoisting unit 650 is attached to the ball hoisting unit attachment portion 501j of the main body frame 4 from the rear, the support protrusion 669a protrudes to the front surface side of the base wall portion 501b through the opening 501o that penetrates the base wall portion 501b.

[0393] Subsequently, the ball hoisting inlet passage 651 of the ball hoisting unit 650 has an opening (inlet) at the upstream end that opens leftward near the lower part of the left side surface of the ball hoisting unit 650. This opening is provided so as to face the ball discharge port 600d of the circulating ball path unit 600 when assembled to the main body frame 4. The ball hoisting inlet passage 651 is inclined so as to become lower from the inlet at the left end toward the right, extends to the right of the hoisting spiral shaft 661 so as to bypass the rear of the hoisting spiral shaft 661, then turns back to the front side and extends to the vicinity of the lower end of the hoisting spiral shaft 661 to the left. Then, it bends in a crank shape so as to turn into the front side of the hoisting spiral shaft 661 in the vicinity of the hoisting spiral shaft 661 and communicates with the hoisting groove 661a of the hoisting spiral shaft 661 on the front side near the lower end of the hoisting spiral shaft 661.

[0394] The ball hoisting inlet passage 651 is provided so that the opening at the upstream end faces the ball discharge port 600d that forms the opening at the downstream end of the ball storage passage 604 in the circulating ball path unit 600, and the game ball B that has flowed through the ball storage passage 604 is transferred and circulated.

[0395] The ball hoisting inlet passage 651 is provided with a hoisting inlet sensor 653 at a position to the right of the hoisting spiral shaft 661, and a ball hoisting inlet ground sheet metal 655 is attached to a position behind the hoisting spiral shaft 661.

[0396] The ball lifting exit passage 652 communicates with the lifting groove 661a near the front of the upper end of the lifting spiral shaft 661 near the upper end of the ball lifting unit 650. After extending leftward from the lifting spiral shaft 661, it bends rearward and extends to the same position as the rear end of the lifting spiral shaft 661 and then bends leftward. Then, it extends leftward near the left end of the ball lifting unit 650 and bends forward, and the downstream end opens forward on the front surface of the ball lifting unit 650 (lifting mechanism cover 669).

[0397] The ball lifting exit passage 652 is provided such that the opening at the downstream end faces the ball supply port of the ball feeding unit described later, and can supply the game ball B to the ball feeding unit 700.

[0398] The ball lifting exit sensor 654 is provided near the left end of the part where the ball lifting exit passage 652 extends leftward near the rear end of the ball lifting unit 650, and the ball lifting exit ground sheet metal 656 is attached to the upstream side (right side) thereof. An opening is provided in the bottom wall of the part where the ball lifting exit ground sheet metal 656 is provided in the ball lifting exit passage 652, and the opening is sized not to obstruct the flow of the game ball B, allowing dust, dirt, etc. to be discharged to the outside through the opening.

[0399] The lifting entrance sensor 653 detects the presence or absence of the game ball B to be lifted when the lifting spiral shaft 661 is rotated by driving the lifting motor 664 to lift the game ball B. Although details will be described later, when the game ball B is not detected by the lifting entrance sensor 653, the lifting motor 664 is not driven.

[0400] The lifting exit sensor 654 detects the presence or absence of the game ball B supplied to the ball feeding unit. Although details will be described later, when the lifting entrance sensor 653 detects the game ball B and the lifting exit sensor 654 fails to detect the game ball B, and a predetermined condition is satisfied (here, subtraction of a predetermined number (for example, 3) of game balls B by the emission subtraction sensor 554), the lifting spiral shaft 661 rotates by driving the lifting motor 664 to lift a predetermined number of game balls B.

[0401] The lifting entrance sensor 653 and the lifting exit sensor 654 are photo sensors having a light emitting part and a light receiving part, and detect the presence or absence of the game ball B non - contact by the light from the light emitting part being blocked by the game ball B.

[0402] Here, the relationship between the ball lifting entrance passage 651 and the ball lifting exit passage 652, and the lifting entrance sensor 653 and the lifting exit sensor 654 will be described. Here, the relationship between the ball lifting entrance passage 651 and the lifting entrance sensor 653 will be described, and since the relationship between the ball lifting exit passage 652 and the lifting exit sensor 654 is the same, it will be omitted. As shown in FIGS. 52 and 53, the part of the ball lifting entrance passage 651 where the lifting entrance sensor 653 is provided is a V - shaped passage part 651a having a V - shaped cross - section (an inverted trapezoid narrowed downward). Note that the part of the ball lifting entrance passage 651 other than the V - shaped passage part 651a is a U - shaped passage part 651b having a U - shaped cross - section open upward.

[0403] Note that the same applies to the ball lifting exit passage 652, the part of the lifting exit sensor 654 is a V - shaped passage part 652a having a V - shaped cross - section (an inverted trapezoid narrowed downward), and the other parts are U - shaped passage parts 652b having a U - shaped cross - section open upward.

[0404] In other words, the V-shaped passage portions 651a and 652a each have a pair of inclined surfaces that are in contact with the game ball B and are inclined so that the distance therebetween widens as they go upward. Further, the U-shaped passage portions 651b and 652b have a flat bottom surface that is in contact with the game ball B and has a width larger than the diameter of the game ball B, and a pair of side wall surfaces that stand upright from both ends in the width direction of the bottom surface. Note that the ball feed passage 703 of the ball feed unit 700, which is on the downstream side of the ball lifting exit passage 652, is also formed in the same shape as the U-shaped passage portions 651b and 652b.

[0405] By the way, if the cross-section of the passage at the portion of the lifting entrance sensor 653 composed of a photosensor is a passage having a U-shaped cross-section that is open upward, the game ball B that flows through contacts the side wall, so that scratches, dirt, etc. generated on the side wall of the passage due to the contact of the game ball B inhibit the light emission and reception of the photosensor, and there is a risk of false detection. Further, in a passage having a U-shaped cross-section, the position of the game ball B in the width direction of the passage is not constant and is not stable, so the detection positions by the sensor vary, and there is a risk of false detection.

[0406] On the other hand, in the present embodiment, since the portion of the lifting entrance sensor 653 (lifting exit sensor 654) is a V-shaped passage portion 651a (V-shaped passage portion 652a) having a V-shaped cross-section, the game ball B is held at two points by the portions on both diagonal sides of the V shape, so that the movement in the width direction of the passage can be restricted, and the position of the game ball B can be made constant and stable with respect to the width direction of the passage. As a result, at the portion of the lifting entrance sensor 653 (lifting exit sensor 654), the game ball B does not contact the side wall of the passage, so that the occurrence of scratches and dirt due to the contact of the game ball B can be prevented, false detection can be eliminated, and the game ball can be reliably detected.

[0407] In the above, as the shape of the passage that makes the position of the game ball B constant and stable with respect to the sensor, the V-shaped passage portion 651a (V-shaped passage portion 652a) having a V-shaped cross-section (inverted trapezoidal shape) is shown, but a pair of ridges provided at an interval narrower than the diameter of the game ball B and extending in the flow direction of the game ball B may also be used.

[0408] The ball lifting inlet passage 651 is provided with a lifting spiral shaft 661 at its downstream end. Therefore, in the ball lifting inlet passage 651 upstream of the lifting spiral shaft 661, the game balls B are picked up one by one into the lifting grooves 661a of the lifting spiral shaft 661, so they move intermittently and the game balls B stay in the ball lifting inlet passage 651. On the other hand, the ball lifting outlet passage 652 is provided with a ball feeding unit 700 (to be described later) at its downstream end. Therefore, in the ball lifting outlet passage 652 upstream of the ball feeding unit 700, the game balls B move intermittently one by one due to the ball feeding operation of the ball feeding unit 700, so the game balls B stay in the ball lifting outlet passage 652.

[0409] And in the ball lifting inlet passage 651 (ball lifting outlet passage 652), as shown in Fig. 53, only the part of the lifting inlet sensor 653 (lifting outlet sensor 654) is formed as a V-shaped passage part 651a (V-shaped passage part 652a) with a V-shaped cross-section, and the other parts are formed as a U-shaped passage part 651b (U-shaped passage part 652b) with a U-shaped cross-section. Therefore, even if a plurality of game balls B stay in the passage, the ball pressure exerted by the plurality of game balls B on the downstream side can be reduced.

[0410] Specifically, as shown by the two-dot chain line in Fig. 53, in the V-shaped passage part 651a (V-shaped passage part 652a), a plurality of game balls B line up linearly (in a row on the axis of the passage), but in the U-shaped passage part 651b (U-shaped passage part 652b), a plurality of game balls B are pushed downstream and line up in a staggered pattern so as to alternately contact the side walls on both sides, and the ball pressure can be dispersed to the side walls, and the ball pressure exerted by the plurality of game balls B on the downstream side can be reduced. Therefore, the parts provided on the downstream side of the ball lifting inlet passage 651 (ball lifting outlet passage 652) (for example, the lifting spiral shaft 661, the ball feeding movable member 705 of the ball feeding unit 700, etc.) will not be damaged by the ball pressure of the plurality of game balls B staying (stored), and there is no need to excessively reinforce the parts against the ball pressure, and the cost of the pachinko machine 1 can be reduced.

[0411] Incidentally, regarding the detection of the game ball B at the winning opening or the like, the output from the ball sensor is checked every predetermined interrupt period (for example, 4 ms), and when the output becomes non-detection, detection, detection (in other words, "011"), it is determined that the game ball B has been detected (ON). That is, when the output from the ball sensor is "011", it is determined as ON, and when it is other than "011", it is determined as OFF. However, in the case of a ball sensor (here, the upward entrance sensor 653 and the upward exit sensor 654) provided in a ball passage such as the ball upward entrance passage 651 or the ball upward exit passage 652 where a plurality of game balls B stay, if the presence or absence of the game ball B is determined by the above-described determination method, in the case of this ball sensor, only OFF occurs when there is no game ball B in the ball passage, a large number of ONs at short intervals occur when the game ball B is supplied to the ball passage, and a large number of OFFs at short intervals occur when the game balls B stored in the ball passage move one by one (the game balls B move at the firing interval). Therefore, with the above-described determination method, it was not possible to accurately determine that there is no game ball B in the ball passage.

[0412] On the other hand, in the present embodiment, thresholds (for example, the ON threshold is 200 ms and the OFF threshold is 200 ms) are provided for ON determination and OFF determination, respectively, and ON or OFF is determined only when non-detection or detection continues beyond the threshold. In other words, for example, when the output from the ball sensor is "01111···", it is determined as ON, and when it is "10000···", it is determined as OFF. Thereby, in the ball passage where a plurality of game balls B stay, the presence or absence of the game ball B can be surely detected (determined).

[0413] Note that the threshold values for determining ON and OFF may vary depending on the type of ball passage, the number of game balls B to be retained, etc., or the ON threshold value and the OFF threshold value may be made different. In the present embodiment, in the lift entrance sensor 653 of the ball lift entrance passage 651, for example, the ON threshold value is set to 80 ms and the OFF threshold value is set to 200 ms. Also, in the lift exit sensor 654 of the ball lift exit passage 652, for example, the ON threshold value is set to 80 ms and the OFF threshold value is set to 200 ms. Further, in the shooter front sensor 704 of the ball feed unit 700 to be described later, for example, the ON threshold value is set to 12 ms and the OFF threshold value is set to 12 ms. Also, as described above, in the firing subtraction sensor 554 of the ball firing unit 550, for example, the ON threshold value is set to 80 ms and the OFF threshold value is set to 80 ms.

[0414] If these above-mentioned threshold values are too small, even a slight vibration or the like may cause false detection and become noise in control. Also, if the threshold value is too large more than necessary, the state of the game ball B will be missed. Therefore, although appropriate threshold values vary depending on the location where the ball sensor is provided, it is desirable that they be at least 10 ms or more and at most 300 ms or less. Also, if the threshold value is determined to be a multiple (for example, 3 times to 60 times) of the interrupt period (for example, 4 ms), the software burden can be reduced because only the number of interrupts needs to be counted in software control. Basically, the threshold value is short for the shooter front sensor 704 where the game ball B surely stays at a fixed position, but for those where the game ball B stays at approximately a fixed position but has a certain width in the retention position (for example, the lift exit sensor 654), the threshold value is made longer to have a margin. Although the game ball B stays (is retained) at a fixed position at the firing subtraction sensor 554, the threshold value is made longer so as not to cause false detection due to artificial vibration.

[0415] The ball lifting inlet grounding sheet metal 655 removes the static electricity of the game balls B supplied from the circulating ball path unit 600 to the ball lifting inlet passage 651. The ball lifting inlet grounding sheet metal 655 is provided upstream of the lifting inlet sensor 653. Thereby, the static electricity of the game balls B passing through the lifting inlet sensor 653 can be removed in advance, and it is possible to avoid false detection occurring at the lifting inlet sensor 653 or the frame control board 740 malfunctioning due to the static electricity from the game balls B.

[0416] The ball lifting outlet grounding sheet metal 656 removes the static electricity of the game balls B lifted by the ball lifting mechanism 660 and polished by the ball polishing mechanism 680. The ball lifting outlet grounding sheet metal 656 is provided upstream of the lifting outlet sensor 654. Thereby, the static electricity of the game balls B passing through the lifting outlet sensor 654 can be removed in advance, and it is possible to avoid false detection occurring at the lifting outlet sensor 654 or the frame control board 740 malfunctioning due to the static electricity from the game balls B.

[0417] The ball lifting relay board 657 is for relaying the connection between the lifting inlet sensor 653, the lifting outlet sensor 654, the lifting motor 664, the lifting motor index sensor 666, the ball polishing motor 688, etc. and the frame control board 740. The ball lifting relay board 657 is attached to the rear side of the lifting mechanism cover 669.

[0418] The ball polishing mechanism 680 is attached to the front side of the ball lifting mechanism 660. The ball polishing mechanism 680 includes a ball polishing cassette 681 having a vertically long rectangular parallelepiped box shape, an endless ring-shaped polishing cloth 682 partially exposed to the outside at the rear surface of the ball polishing cassette 681, a sheet-shaped ball polishing sponge 683 provided between the exposed part of the polishing cloth 682 to the outside and the rear surface of the ball polishing cassette 681, a ball polishing feed gear 684 rotatably supported around a horizontal axis at the lower part inside the ball polishing cassette 681, and a ball polishing driven gear 685 meshing with the ball polishing feed gear 684 with the polishing cloth 682 in between and rotatably supported around a horizontal axis.

[0419] Further, the ball milling mechanism 680 includes a flat plate-shaped ball milling motor base 686 that extends vertically with a constant front-to-back depth to the left of the ball milling cassette 681 and whose rear end edge is rotatably attached to the lifting mechanism base 668, a gear cover 687 attached to the left surface of the ball milling motor base 686, a ball milling motor 688 attached to the left surface of the gear cover 687 with its rotation axis protruding between the gear cover 687 and the ball milling motor base 686, a flat gear-shaped motor gear 689 attached to the rotation axis of the ball milling motor 688, a large-diameter gear portion 690a in the shape of a flat gear that meshes with the motor gear 689, and a small-diameter gear portion 690b in the shape of a flat gear that is integrally rotated with the large-diameter gear portion 690a and has a small diameter. The ball milling mechanism 680 also includes a transmission gear 690 that is rotatably supported between the ball milling motor base 686 and the gear cover 687, a transmission gear 691 in the shape of a flat gear that meshes with the small-diameter gear portion 690b of the transmission gear 690 and is rotatably supported between the ball milling motor base 686 and the gear cover 687, and a rotation connecting portion 692 that rotates integrally with the transmission gear 691 and protrudes rightward through the ball milling motor base 686.

[0420] Furthermore, the ball milling mechanism 680 includes a flat plate-shaped cassette pressing piece 693 that abuts against the front surface of the ball milling cassette 681, with its left end side locked to the front end of the ball milling motor base 686 and its right end side attached to the front surface of the base wall portion 501b of the main body frame base 501. The ball milling mechanism 680 also includes a nail latch 694 that detachably attaches the right end side of the cassette pressing piece 693 to the front surface (locking hole 669b) of the support protrusion 669a in the lifting mechanism cover 669, and a spring 695 that biases the cassette pressing piece 693 rearward (towards the ball milling cassette 681) with respect to the ball milling motor base 686.

[0421] As shown in FIG. 54, the ball milling cassette 681 of the ball milling mechanism 680 is formed in a box shape with a hollow interior, and slits 681a through which the polishing cloth 682 can pass are provided at the upper and lower edges of the rear surface. The ball milling cassette 681 is detachably attached from the front so as to close the ball milling port 668a with respect to the lifting mechanism base 668 in the ball lifting mechanism 660.

[0422] In addition, the ball milling cassette 681 has a connecting hole 681b provided at the lower part of the left side surface and a positioning hole 681c provided in front of the connecting hole. The connecting hole 681b is for inserting a rotary connecting portion 692 protruding rightward from the ball milling motor base 686, and the tip of the rotary connecting portion 692 inserted into the connecting hole 681b is connected to the ball milling feed gear 684. The positioning hole 681c is for inserting a positioning pin 686b (to be described later) of the ball milling motor base 686. When the positioning pin 686b is inserted, the ball milling cassette 681 is positioned with respect to the ball lifting mechanism 660, and forward movement of the ball milling cassette 681 with respect to the ball lifting mechanism 660 is restricted (locked).

[0423] Furthermore, the ball milling cassette 681 has a plurality of rollers 681d around which the abrasive cloth 682 is wound, and a flat tension spring 681e that presses the abrasive cloth 682 against the roller 681d provided close to the upper slit 681a. The tension spring 681e applies tension to the part of the abrasive cloth 682 that is exposed to the outside from the ball milling cassette 681 by pressing the abrasive cloth 682 against the roller 681d, so as to prevent the abrasive cloth 682 from bending on the outer side of the rear surface.

[0424] The abrasive cloth 682 is formed in an endless ring-shaped belt with a constant width on both the left and right sides. As shown in FIGS. 50(a) and 54(c), the abrasive cloth 682 is accommodated in a state of meandering back and forth inside the ball milling cassette 681, and a part of it is exposed behind the rear surface of the ball milling cassette 681 through the upper and lower slits of the ball milling cassette 681.

[0425] The ball milling sponge 683 is provided between the rear surface of the ball milling cassette 681 and the rearward-exposed part of the polishing cloth 682, and is attached to the rear surface of the ball milling cassette 681. The inner surface of the polishing cloth 682 is in contact with the rear surface of the ball milling sponge 683. In a state where the ball milling sponge 683 is assembled to the ball lifting unit 650, the polishing cloth 682 is elastically pressed against the game ball B that is exposed forward from the ball milling port 668a of the ball lifting mechanism 660, so that the polishing cloth 682 contacts the spherical surface of the game ball B in a wider range. Note that the ball milling sponge 683 is detachably attached to the ball milling cassette 681.

[0426] The ball milling feed gear 684 is provided such that its axis coincides with the axis of the transmission gear 691 (rotation connection part 692) in a state where the ball milling cassette 681 is attached, and the left end of the rotating shaft is connected to the rotation connection part 692 and rotates integrally with the transmission gear 691.

[0427] The ball milling driven gear 685 meshes with the ball milling feed gear 684 so as to have a gap through which the polishing cloth 682 enters. When the ball milling feed gear 684 rotates, the ball milling driven gear 685 rotates in the reverse direction and can feed the polishing cloth 682 sandwiched between it and the ball milling feed gear 684.

[0428] The ball milling motor base 686 extends vertically along the left side surface of the ball milling cassette 681, and the rear end side is rotatably attached around an axis extending in the vertical direction with respect to the lifting mechanism base 668. As a result, the ball milling motor base 686 can be rotated between a lock position parallel to the left side surface of the ball milling cassette 681 and a release position where the front end side is farther away from the ball milling cassette 681 to the left. The ball milling motor base 686 has a locking hole 686a penetrating left and right at a position above the vertical center at the front edge. A locking hook portion 693a provided at the left end of the cassette pressing piece 693 is inserted into and locked to this locking hole 686a.

[0429] As shown in Fig. 46, in this ball milling motor base 686, a rotation connecting portion 692 protrudes rightward from a portion near the lower end on the right side surface and toward the rear in the front-rear direction. Further, the ball milling motor base 686 has a positioning pin 686b that protrudes rightward in a columnar shape from a portion at the center in the front-rear direction near the lower end on the right side surface. The tip (right end) of the positioning pin 686b is formed in a conical shape. By inserting this positioning pin 686b into the positioning hole 681c of the ball milling cassette 681, the ball milling cassette 681 is positioned and forward movement is restricted.

[0430] Specifically, with the ball milling motor base 686 rotated to the release position where the front end moves leftward with respect to the front-rear direction and the ball milling cassette 681 mounted in the cassette mounting recess 668b of the lifting mechanism base 668, when the ball milling motor base 686 is rotated so that its tip moves rightward and moved to the lock position, the positioning pin 686b is inserted into the positioning hole 681c of the ball milling cassette 681 from a direction intersecting the front-rear direction, the ball milling cassette 681 can be positioned, and the ball milling cassette 681 can be prevented from moving forward from the cassette mounting recess 668b.

[0431] This ball milling motor base 686 is provided so that the tip side abuts against the protrusion 102 (guide surface 102a) of the door frame 3. Thereby, although details will be described later, when the ball milling motor base 686 attempts to close the door frame 3 with respect to the main body frame 4 in a state other than the lock position, the guide surface 102a of the protrusion 102 contacts the front end of the ball milling motor base 686, the ball milling motor base 686 rotates to the lock position, forgetting to lock can be prevented, and the cassette pressing piece 693 and the like can be prevented from being pinched and damaged between the door frame 3.

[0432] The ball milling motor 688 is controlled independently of the operation of the lifting motor 664, and is controlled so that the polishing cloth 682 moves 0.17 mm every time 1000 game balls B are launched.

[0433] The cassette pressing piece 693 extends horizontally, and a hook-shaped locking hook portion 693a is provided at the left end and inserted into the locking hole 686a of the ball milling motor base 686 for locking. This cassette pressing piece 693 is biased by a spring 695 to rotate counterclockwise in a plan view. In other words, it is biased to press the ball milling cassette 681 mounted in the cassette mounting recess 668b of the lifting mechanism base 668 backward. The right end of the cassette pressing piece 693 extends further to the right than the ball milling cassette 681, and its rear surface is configured to be able to contact the front surface of the support protrusion 669a in the lifting mechanism cover 669. A nylon latch 694 is provided near the right end of this cassette pressing piece 693.

[0434] When the operation part 694a of the nylon latch 694 is pushed in a state where the right end of the cassette pressing piece 693 is in contact with the support protrusion 669a of the lifting mechanism cover 669, the tip diameter expands and is locked in the locking hole 669b of the support protrusion 669a, and the cassette pressing piece 693 can be locked immovably. When the operation part 694a is pulled forward, the lock can be released. Specifically, the nylon latch 694 includes an operation part 694a composed of a disk-shaped disk part and a rod-shaped part protruding from the center of the disk part, a cylindrical part into which the rod-shaped part of the operation part 694a is slidably inserted, a flange part extending outward from the base end part near the disk part in the cylindrical part, and a cylindrical member (grommet) having a plurality of slits provided in the circumferential direction and notched from the tip part on the side opposite to the flange part in the cylindrical part toward the flange part. When the operation part 694a is pressed toward the support protrusion 669a with the cylindrical member inserted into the locking hole 669b of the support protrusion 669a, the rod-shaped part slides toward the tip side inside the cylindrical part, and the tip of the cylindrical part divided by the plurality of slits expands in diameter so as to open. As a result, the cylindrical member cannot come out of the locking hole 669b, and locking can be achieved.

[0435] In the assembled state on the main body frame 4, the ball lifting unit 650 of this embodiment is attached to the rear side of the base wall portion 501b of the main body frame base 501. When assembling the ball lifting unit 650 to the main body frame base 501 of the main body frame 4, it is attached to the ball lifting unit attachment portion 501j provided on the rear surface of the base wall portion 501b in a state where the ball grinding cassette 681 of the ball grinding mechanism 680 is removed from the ball lifting mechanism 660 (see Fig. 47(a)). At this time, the ball grinding motor base 686 and the support protrusion 669a protruding forward from the lifting mechanism base 668 are made to protrude the front end side forward of the base wall portion 501b through the opening 501o penetrating back and forth in ...

Claims

In a gaming machine comprising a game board in which a gaming area is formed, and a partitioning member provided on the front side of the game board and located outside the gaming area, the partitioning member includes: an outer wall forming an outer edge; an inner wall provided at a position closer to the gaming area than the outer wall; a specific reinforcing wall provided so as to connect the outer wall and the inner wall; a demolding trace portion that may occur during molding of the partitioning member; and a contact area that contacts the front surface of the game board and a non-contact area that does not contact the front surface of the game board are provided in the partitioning member. The contact area is provided at the rear end portion of one or both of the outer wall and the inner wall, and a demolding trace portion is formed in the contact area. The non-contact area is provided at a plurality of locations of the partitioning member including at least the rear end portion of the specific reinforcing wall. A demolding trace portion is not formed in the non-contact area provided at the rear end portion of the specific reinforcing wall among the plurality of non-contact areas, and a demolding trace portion is formed in the other non-contact areas. In a state where the partitioning member is removed from the game board, both the demolding trace portion of the contact area and the demolding trace portion of the non-contact area are visible from the back side of the partitioning member. A gaming machine characterized by the above.

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