JP2012050767A - Ball return prevention device of pinball game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ball return prevention device of a pinball game machine, having a configuration to effectively restrict a fraudulent winning action to detect the winning of a game ball by fraudulently operating the game ball with a threadlike body such as a fishing line.SOLUTION: The ball return prevention device 50 for preventing the game ball shot toward a playfield from returning to a shooting rail 12 includes a rocking member 90 whose base part 91 is pivotally connected to a rocking shaft 61 extending in a substantially vertical direction with respect to a game board and which is rockable between a position where an opening/closing part 93 extending from the base part 91 to one end side closes an outlet opening 12c with the rocking shaft 61 as a center and a position where the opening/closing part 93 opens the outlet opening 12c. The rocking member 90 is normally biased in a direction to close the outlet opening 12c, rocks in a direction to open the outlet opening 12c by pressure force when the game ball that has passed through the shooting rail 12 pressurizes the opening/closing part 93, and includes a blade shape cutting part 94 at the distal end of the opening/closing part 93 in the rocking member 90.

Description

  The present invention relates to a ball game machine such as a pachinko machine, and more particularly, to prevent an illegal act of detecting a winning of a game ball continuously by illegally operating a game ball that has entered a winning opening. The present invention relates to a ball return prevention device for a configured ball game machine.

  A pachinko machine, which is a typical example of a ball game machine, is provided with a processing path for game balls on the front and back in an integrated manner on the front frame that houses and holds a game board that forms a game area on the front, and on the back. It is configured by attaching a back set board to which various control boards are attached, and in the process of dropping the game ball guided to the upper part of the game area by the launching device, the game is made to win various winning devices provided in the game area It is configured.

  In such a pachinko machine, when a game ball enters a general winning device, a corresponding number of winning balls are paid out. A lottery of patterns is performed and a predetermined number of prize balls are paid out. When a big hit occurs after winning the lottery, the game shifts to a special gaming state advantageous to the player, and the winning opening of a big winning device generally called an attacker is continuously opened several times, and the number of balls entered A corresponding number of prize balls will be paid out (see, for example, Patent Document 1).

JP 2009-268565 A

  The pachinko machine is provided with a winning ball detector composed of a pass-type sensor or the like corresponding to various winning devices, and the winning ball is passed through the winning ball detector when a game ball entering the winning device passes through the winning ball detector. The winning of the game ball is detected, and the payout of the winning ball according to the number of balls entered, the lottery of winning or the like, etc. are executed in a timely manner. Here, in normal games, the passing of the winning ball detector is detected only once for each game ball in principle, but in recent years, a game with a filament such as a fishing line of a predetermined length is used. This game ball is repeatedly passed through the winning ball detector (game) by illegally operating the ball into the winning device and pulling the filament to the front or sending it to the back. An illegal winning action (got action) in which a large number of winning balls are paid out (by detecting consecutive winnings of balls) frequently occurs, and the damage has become a big problem. For this reason, it has become an issue for game machine manufacturers to take measures to effectively prevent such illegal prize winning acts.

  The present invention has been made in view of such a problem, and effectively deters an illegal winning act of detecting a winning of a game ball by illegally operating a game ball with a filament such as a fishing line. An object of the present invention is to provide a ball return prevention device for a ball game machine having a configuration capable of achieving the above.

  In order to achieve such an object, a ball return prevention device for a ball game machine according to the first aspect of the present invention guides a game ball shot by a game ball launch mechanism by a launch rail provided on the game board. In the ball game machine configured to be released into the game area on the game board, the game ball that is provided in the vicinity of the exit opening of the game ball into the game area on the launch rail is launched. A ball return prevention device that prevents the ball from returning into the rail, and a base portion is pivotally connected to a swing shaft (for example, the support shaft 61 in the embodiment) extending in a substantially vertical direction with respect to the game board. An opening / closing portion extending from the base toward the one end side includes a swinging member that can swing between a position that closes the outlet opening and a position that opens the outlet opening about the swinging shaft. Is always energized in the direction to close the When the opening / closing part is pressed by a game ball that has passed through the slot, the opening is opened by the pressing force, and a blade-shaped cutting part is provided at the tip of the opening / closing part of the swinging member. The

  In the above-described invention, the rocking member support further includes a rocking shaft and fixed on the game board, and the rocking member includes a base, an opening / closing part extending from the base to one end side, and a base. A weight portion provided on the other end side sandwiched between them and capable of swinging about a swing shaft and biasing the opening / closing portion in a direction to close the outlet opening by its own weight. According to the swing position of the member, a plurality of protrusions projecting from the swing member support body into the outlet opening and extending in a direction intersecting with the passing direction of the game ball are provided on the protrusion of the weight portion. Has a V-shaped groove that opens in a V-shape toward a direction substantially perpendicular to the passing direction of the game ball in the outlet opening, and the groove bottoms of the V-shaped grooves of the plurality of protrusions (for example, in the embodiment) Counterbore part 98) is in a direction substantially perpendicular to the passing direction of the game ball It is preferably arranged 倚.

  According to a second aspect of the present invention, there is provided a ball return prevention device for a ball ball game machine, wherein a game ball shot by a game ball launching mechanism is guided by a launch rail provided on the game board, and the inside of a game area on the game board. In a ball game machine configured to be released to the game rail, it is provided in the vicinity of the exit opening of the launch ball into the game area of the launch rail, and the game ball launched into the game area is prevented from returning to the launch rail. And a swing member support body having a swing shaft (for example, the support shaft 61 in the embodiment) fixed on the game board and extending in a substantially vertical direction with respect to the game board. A base portion that is pivotally connected to the moving shaft, an opening / closing portion that extends toward the one end side from the base portion, and that can swing between a position that closes the outlet opening and a position that opens the outlet opening around the swinging shaft, and a base portion It is provided on the other end side, with the rocking shaft as the center A swinging member having a weight part that is swingable and biases the opening and closing part in a direction to close the outlet opening by its own weight, and the swinging member is constantly biased in the closing direction of the outlet opening by the weight part, When the opening / closing part is pressed by the game ball that has passed through the launch rail, the pressing part causes the opening to swing in the opening direction of the outlet opening, and the weight part depends on the swinging position of the swinging member. The swinging member support protrudes into the outlet opening, and the protruding portion of the weight portion includes a blade-like cutting portion (for example, the edge portion 96a of the protrusion portion 96 in the embodiment).

  In the ball return preventing device for a ball game machine according to the first aspect of the present invention, the base portion is pivotally connected to a swing shaft extending in a substantially vertical direction with respect to the game board, and an opening / closing portion extending from the base portion toward one end side is provided. A swinging member is provided which can swing between a position where the outlet opening is closed and a position where the outlet opening is opened around the swinging shaft, and the swinging member is always urged and fired in the direction of closing the outlet opening. When the opening / closing part is pressed by a game ball that has passed through the rail, it swings in the direction to open the outlet opening due to the pressing force, and is configured to have a blade-like cutting part at the tip of the opening / closing part in the swinging member. ing. Therefore, when a game ball with a filament attached is hit by a game ball launching device and passes through the ball return prevention device and is released from the exit opening into the game area, the game ball receives the action of gravity and receives the game board. Since it flows down, the filament attached to the game ball is hooked and tethered to the tip of the opening / closing part of the swinging member. When an operation for pulling or feeding the filamentous body from the outside is performed in this state, the filamentous body is slid in contact with the blade-shaped cutting portion at the tip of the opening / closing portion of the swinging member, so that the filamentous shape is removed from the game ball. You can divide your body and deter unauthorized operations. Accordingly, it is possible to prevent illegal occurrence by effectively deterring an illegal winning act that illegally operates a game ball with a filamentous body and causes the winning ball detector to detect continuous winnings. .

  In the above-described invention, the weight portion protrudes from the swinging member support body into the outlet opening according to the swinging position of the swinging member, and intersects the protruding portion of the weight portion with the passing direction of the game ball. A plurality of projecting portions extending are provided, and the projecting portions have V-shaped grooves opened in a V shape in a direction substantially orthogonal to the passing direction of the game ball in the outlet opening. It is preferable that the groove bottom of the V-shaped groove is provided so as to be deviated in a direction substantially orthogonal to the passing direction of the game ball. Accordingly, when the weight portion protrudes toward the outlet opening side by the swing of the swing member, the plurality of V-shaped grooves provided so that the filament is biased in a direction substantially perpendicular to the passing direction of the game ball is provided. Appropriate tension can be applied to the filament by being hooked to the groove bottom at alternate positions and locked between the two points. Therefore, the thread-like body tethered to the tip of the opening / closing part of the swinging member can be deeply swallowed into the cutting part and pressed into contact with the cutting part. Can be more reliably divided.

  According to a second aspect of the present invention, there is provided a ball return preventing device for a ball game machine, a swing member support body having a swing shaft fixed on the game board and extending substantially perpendicularly to the game board, A base portion pivotally connected to the shaft, an opening / closing portion extending from the base portion toward one end side and swingable between a position where the outlet opening is closed and a position where the outlet opening is opened centering on the swing shaft, and the base portion A swing member provided on the other end side of the swing shaft and having a weight portion that is swingable about the swing shaft and biases the opening / closing portion in the direction of closing the outlet opening by its own weight. Is constantly urged in the closing direction of the outlet opening by the weight part, and when the opening / closing part is pressed by the game ball passing through the launch rail, it swings in the opening direction of the outlet opening by the pressing force. The weight part supports the swinging member according to the swinging position of the swinging member. It is configured to include a blade-shaped cutting portion protrudes to the protruding portion of the weight section in the outlet opening from. Therefore, when a game ball with a filament attached is hit by a game ball launching device and passes through the ball return prevention device and is released from the exit opening into the game area, the game ball receives the action of gravity and receives the game board. Since it flows down, the filament attached to the game ball is hooked and tethered to the tip of the opening / closing part of the swinging member. When a subsequent game ball that has passed through the launch rail in this state presses the swing member to swing the swing member, the weight portion of the swing member protrudes toward the outlet opening and is provided on the weight portion. Since the blade-shaped cutting portion presses and cuts the thread-like body, the thread-like body can be divided from the game ball to prevent unauthorized operation. Accordingly, it is possible to prevent illegal occurrence by effectively deterring an illegal winning act that illegally operates a game ball with a filamentous body and causes the winning ball detector to detect continuous winnings. .

It is a front view of a pachinko machine provided with a ball return prevention device to which a fraud prevention structure according to the present invention is applied. It is a rear view of the pachinko machine. It is a front view of the game board provided in the pachinko machine. It is a block diagram which mainly shows the control form of the main control apparatus and ball payout control apparatus in the said pachinko machine. It is a perspective view which shows the state which attached the ball | bowl return prevention apparatus on the game board. It is a front view which shows the state which attached the ball | bowl return prevention apparatus on the game board. It is a top view which shows the state which attached the ball | bowl return prevention apparatus on the game board. It is a front view of a ball return prevention device. It is a perspective view which shows the principal part of a ball | bowl return prevention apparatus. It is a front view which shows the state which removed the cover member from the ball | bowl return prevention apparatus. It is a front sectional view of the swing member in the ball return prevention device. It is sectional drawing shown along the arrow XII-XII in FIG. (A) is a figure equivalent to FIG. 10 when the rocking | swiveling member in a ball return prevention apparatus is in a closed state, (B) is FIG. 10 when the rocking member in a ball | bowl return prevention apparatus is in an open state. It is an equivalent figure. (A) is a figure equivalent to FIG. 10 which shows the state by which the filament was caught by the cutting part of the rocking | swiveling member in a ball | bowl return prevention apparatus, (B) is a weight part of the rocking | fluctuation member in a ball | bowl return prevention apparatus. It is a figure equivalent to FIG. 10 which shows the state which the filamentous body contacted. It is a perspective view which shows the state in which the threadlike body was caught by the cutting part and counterbore part of the rocking | swiveling member in a ball | bowl return prevention apparatus.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 and FIG. 2 show a front view and a rear view of a pachinko machine PM as a representative example of a ball game machine equipped with a ball return prevention device according to the present invention, and a game board 10 mounted on this pachinko machine PM. A front view is shown in FIG. 3, and the overall configuration of the pachinko machine PM will be outlined first with reference to this figure.

  As shown in FIG. 1, the pachinko machine PM has a rectangular frame size adapted to the front of the opening of the outer frame 1 that forms a vertically fixed holding frame that is configured to have an outer rectangular frame size. The front frame 2 is formed by an upper and lower hinge mechanism 3a, 3b disposed on the front left edge of each other so that it can be opened and closed laterally and attached and detached, and is referred to as a double lock provided on the front right edge. The locking device 4 is always used to keep the closed state engaged with the outer frame 1.

  On the front side of the front frame 2, a rectangular glass door 5 and a ball tray unit 6 that match the upper front area of the front frame 2 are installed horizontally by using hinge mechanisms 7 a, 7 b, 7 c provided on the left side of the front side. It is assembled so that it can be opened and closed and detachable, and is always kept closed using the locking device 4 so as to cover the front surface of the front frame 2. An operation handle 8 for performing a game ball launching operation is provided at the lower right side of the front surface of the ball tray unit 6. A rectangular frame-shaped storage frame (not shown) for detachably storing the game board 10 is provided on the upper portion of the front frame 2 located behind the glass door 5, and a predetermined gauge setting is provided in the storage frame. The configured game board 10 is detachably set and held, and the game area PA in front of the game board 10 is exposed through the glass door 5 that is always held closed.

  As shown in FIG. 3, the game board 10 includes a decorative board 11 formed by attaching a cell printed with a predetermined pattern on a rectangular laminated plywood subjected to router processing or the like. On the front surface of the decorative plate 11, an outer rail 12a and an inner rail 12b are fixed in an arc shape, and a substantially circular game area PA in which a game ball can roll is defined. The outer rail 12a and the inner rail 12b form a launch rail 12 that guides the game ball to the game area PA, and the launch rail 12 has a launch rail at a position near the exit opening 12c of the game ball (the tip of the inner rail 12b). A ball return prevention device 50 is provided for preventing a game ball released from the exit opening 12 c into the game area PA through 12 and returning to the launch rail 12 again. A detailed description of the ball return prevention device 50 will be described later.

  The game area PA of the game board 10 is provided with a large number of game nails 13 and a windmill 14 and various winning devices 15, 16, 17, 18 and the like, and various effects are provided near the center of the game area PA. A center ornament 20 to which a symbol display device 21 for displaying pattern images and symbols is attached is provided. Further, at the lower end of the game area PA, there is provided an out port 19 through which game balls that have fallen without winning in each winning device are discharged to the back side of the game board 10.

  As shown in FIG. 2, a back set board 30 formed in a rectangular frame shape somewhat smaller than the inner size of the outer frame 1 is detachably attached to the back side of the front frame 2. The back set board 30 is formed in a frame shape having a large window opening 30a that opens in communication with the front and rear in an upper region located behind the game board 10, and a game ball is placed above the window opening 30a. A sphere storage tank 31 to be stored and a tank rail 32 which is connected to the sphere storage tank 31 and is slanted gently are provided, and guided to the right side of the window opening 30a in a rear view by the tank rail 32 in an aligned state in front and back. A ball payout device 33 for paying out game balls based on a winning state on the game board 10, and a prize ball mechanism such as a payout passage for guiding the game balls paid out from the ball payout device 33 to the ball tray of the ball tray unit 6 are provided. ing.

  Further, on the back of the back set board 30, a control device, a power supply unit 41 for supplying electric power to electronic components, a main control device 42 for comprehensively controlling the operation of the pachinko machine PM, image display, effect lighting, sound effect, etc. Various substrates and electronic components such as a sub-control device 43 that mainly controls the game effects of the game and a ball payout control device 44 that controls the payout operation of the game ball are attached, and these are connected by a connector cable (not shown). The pachinko machine PM is configured to be operable.

  Now, in the pachinko machine PM generally configured as described above, with regard to the game ball payout process when the game ball launched into the game area PA falls into each winning device, the configuration of each related part is a little more detailed explain. There are various types of winning devices provided on the game board 10 including appearance design and operations at the time of winning, and any type of winning device may be used according to the gauge setting. However, for example, the game board 10 illustrated in FIG. 3 shows an example in which three types of winning devices, that is, a general winning device 15, a starting winning device 16, and a large winning devices 17, 18 are provided.

  The general winning device 15 is a fixed winning tool having a winning opening 15a into which a game ball can drop, and the safe ball that has dropped into the winning opening 15a is discharged to the back side of the decorative board 11 through the safe ball passage. The winning is detected by passing through a winning ball detector 15s (see FIG. 4) provided on the back side. The winning ball detector 15s is not particularly limited as long as it is a passing sensor that can detect the passing of a game ball. For example, a non-contact operation type such as a magnetic sensor, an optical sensor, a proximity switch, etc. It may be an operation type (the same applies to the winning ball detectors 16s, 17s, and 18s shown below).

  The start winning device 16 is a winning tool that determines the conditions for starting the variation of the symbols. The safe ball that has fallen into the winning port 16a is discharged to the back side of the decorative board 11 through the safe ball passage, and is placed on the back side. A winning is detected by passing through a provided winning ball detector 16s (see FIG. 4).

  The big winning devices 17 and 18 are so-called attacker-type movable winning devices, and open / close doors that cover the horizontal rectangular big winning ports 17a and 18a are attached to be openable and closable. The door is normally closed, and when a special gaming state is established under a predetermined winning condition during the game, the upper part of the door is tilted forward approximately 90 degrees to open the large winning openings 17a, 18a. The The safe balls that have fallen into the big winning openings 17a, 18a pass through the safe ball passage and are discharged to the back side of the decorative board 11, and the winning ball detectors 17s, 18s (corresponding to the area openings on the back side) The winning is detected by passing through (see FIG. 4). The game balls detected by the winning ball detectors 15s, 16s, 17s, and 18s flow down the game-completed ball discharge passage and are discharged to the game island collection device.

  In the pachinko machine PM configured as described above, the outer frame 1 is fixedly installed on the game island (installation frame base) of the game facility, and the front frame 2, the glass door 5, the ball tray unit 6 and the like are closed and locked. The game is started by storing the game ball in the ball tray of the ball tray unit 6 and rotating the launch handle 8. When the firing handle 8 is turned, one game ball stored in the ball tray of the ball tray unit 6 is played by a game ball launching device (not shown) disposed on the back side of the ball tray unit 6. Each time it is launched into the game area PA, a pachinko game is developed.

  Here, FIG. 4 shows a block diagram mainly showing the control modes of the main control device 42 and the ball payout control device 44. As shown in FIG. 4, the detection signals of the winning ball detectors 15s, 16s, 17s, and 18s are output to the main controller 42, and the main controller 42 detects the pachinko machine PM based on the input detection signals. Centralized control of operation. For example, when a game ball rolling down the game area PA falls into the general winning device 15, the winning game is detected when the entered game ball passes the winning ball detector 15s, and the detection signal is sent to the main control device 42. Entered. Based on this detection signal, the main control device 42 detects that the game ball has dropped into the winning device and that the winning device that has won the prize is the general winning device 15, and sets the winning condition for the ball payout control device 44. A corresponding ball payout command command is output and the ball payout device 33 is operated to pay out a predetermined number of prize balls set in advance as an insignia when winning the general winning device 15 to the ball tray of the ball tray unit 6. .

  Further, when a game ball falls into the start winning device 16 and a detection signal is output from the winning ball detector 16s, the main control device 42 determines from the detection signal that the game ball has fallen and the winning winning. It is detected that the device is the start winning device 16, and a game program corresponding to the winning conditions is called and executed. Specifically, the symbol combination lottery is performed in the main control device 42, the lottery result is output to the sub-control device 43, and the symbol displayed on the symbol display device 21 is controlled to be varied and stopped, so that the combination of stop symbols is obtained. For example, a blinking display of a side lamp or generation of a sound effect by a speaker is performed. Further, the main control device 42 outputs a ball payout command command corresponding to the winning conditions to the ball payout control device 44 to operate the ball payout device 33, and is set in advance as an award when winning the start winning device 16. The predetermined number of prize balls are paid out to the ball tray of the ball tray unit 6.

  When the lottery result by the main controller 42 is a jackpot (when the symbol at the time of variable stop is a jackpot symbol), the symbol display device 21 is matched with, for example, a decorative symbol imitating the symbol display of the slot machine. Such a display mode is displayed and a special game is executed. In the special game, the special winning devices 17 and 18 are operated to open the special winning ports 17a and 18a. Then, for example, after the grand prize winning holes 17a, 18a are opened for about 30 seconds or after nine or more game balls have won the big prize winning devices 17, 18, the big prize winning openings 17a, 18 are temporarily closed. Such an opening / closing operation is continuously repeated a predetermined number of times (for example, 15 times). Each time a game ball falls into the big winning devices 17, 18, a predetermined number of game balls set in advance are paid out from the ball payout device 33 as prize balls.

  Now, in the pachinko machine PM constructed as described above, in normal games, as a rule, the passing of the game ball to the winning ball detector is detected only once per game ball. There are frequent fraudulent prize winning actions (got action) in which a single gaming ball dropped into is continuously passed through the inlet of the winning ball detector by an illegal operation and a large number of prize balls are paid out.

  An outline of this typical technique is as follows. First, one end side of a filamentous body such as a fishing line having a predetermined length is fixed to a game ball, and the other end side of this filamentous body is grasped by a palm himself, A game ball (hereinafter referred to as “threaded ball”) that has been crafted in such a manner is placed between the other game balls stored in the ball tray of the ball tray unit 6 and 1 from the ball dish together with the other game balls. The balls are supplied one by one to the game ball launching device and sent into the game area PA through the launch rail 12 by the game ball launching device. When the ball with the thread reaches the game area PA, the game ball is picked up by using a strong magnet from the outside of the glass door 5 (the general prize-winning device 15 having the largest number of one-time prize balls tends to be targeted). ) To drop into the winning opening of the winning device. When the game ball is guided from the winning opening to the safe ball passage and passes through the introducing opening of the winning ball detector, the winning of the gaming ball is detected by the main control device 42 and the number of awards corresponding to the winning conditions is detected by the ball payout device 33. The ball is paid out to the ball tray of the ball tray unit 6. The fraudster recognizes that the threaded ball has reached the target winning ball detector when the prize ball is paid out in this way, and the other end side of the filament held in his palm By pulling the ball forward and sending it to the back side, the ball with thread is repeatedly passed through the entrance of the winning ball detector many times. Has won a prize ball. This is the whole picture of fraudulent prize-winning acts using threaded balls that have been occurring frequently recently.

  Therefore, in order to prevent such an illegal winning action, the anti-fraud structure is provided in the ball return prevention device 50 for preventing the game ball from returning backward. Hereinafter, the configuration of the ball return prevention device 50 will be described with additional reference to FIGS. Here, FIG. 5 is a perspective view showing a state in which the ball return prevention device 50 is attached on the game board 10, FIG. 6 is a front view showing a state in which the ball return prevention device 50 is attached on the game board 10, and FIG. FIG. 8 is a front view of the ball return preventing device 50, FIG. 9 is a perspective view showing the main part of the ball return preventing device 50, and FIG. 11 is a front view showing a state where the cover member is removed from the ball return preventing device 50, FIG. 11 is a front sectional view of the swinging member in the ball return preventing device 50, and FIG. 12 is a sectional view taken along arrows XII-XII in FIG. 13A is a view corresponding to FIG. 10 when the swinging member in the ball return preventing device 50 is in the closed state, and FIG. 13B is a state in which the swinging member in the ball return preventing device 50 is in the open state. It is a figure equivalent to FIG.

  The ball return prevention device 50 includes a swinging member support 60 provided on the upper end of the inner rail 12b on the game board 10 and an in-plane parallel to the game board 10 pivoted to the swinging member support 60. And a swinging member 90 that is swingable and displaceable (in the vertical plane).

  The swing member support body 60 includes a base member 70 formed integrally with the upper end portion of the inner rail 12b, and a cover member 80 that is detachably attached to the base member 70 by a cover member attachment screw B2. A space 62 (see FIG. 10) for accommodating a part of the swing member 90 is defined in the base member 70 in a state where the cover member 80 is assembled.

  The base member 70 has an elongated shape extending obliquely upward to the right along the launch rail 12 as a whole, a substantially plate-like support portion 71 that comes into contact with the front side of the game board 10, and the support portion A side wall portion 73 that extends forward from the lower end of 71 and covers the lower portion of the swinging member 90 is substantially U-shaped in front view. A cylindrical positioning boss 72, which can be inserted into a positioning hole (not shown) formed on the front side of the game board 10, protrudes rearward from the distal end portion of the support portion 71. At the upper end of the side wall portion 73, a plate-shaped regulating piece 74 that is configured to come into contact with the swinging member 90 and stops the swinging of the swinging member 90 protrudes obliquely upward to the left. . Further, a cylindrical base member-side protrusion 75 that protrudes and extends toward the cover member 80 is provided at the approximate center of the side wall 73, and a convex strip of a cover member mounting screw B2 for attaching the cover member 80 to the upper end. Is provided with a cover member mounting screw hole 76 having an inner circumferential surface with a concave thread to be screwed with, and a large-diameter projection into which a cover member-side projection 84 (to be described later) can be inserted in order from the front side at the lower end portion. An insertion hole 77 and a small-diameter base member side insertion hole 78 through which a fixing screw B1 for fixing the swinging member support body 60 on the game board 10 is inserted are provided coaxially. .

  The cover member 80 has an elongated shape that matches the shape of the base member 70, and is used for positioning the cover member mounting screw insertion hole 81 through which the cover member mounting screw B2 is inserted, and the base member 70 and the cover member 80. A protrusion insertion hole 82 into which the base member side protrusion 75 is inserted and a cover member side insertion hole 83 into which a fixing screw B1 for attachment to the game board 10 is inserted are provided. On the rear surface side of the cover member 80, a cylindrical cover member-side protrusion 84 that is fitted into the protrusion insertion hole 77 of the base member 70 protrudes, and the cover member side protrusion 84 is centered on the cover member-side protrusion 84. The insertion hole 83 is provided so as to penetrate in the front-rear direction, and the cover member side insertion hole 83 and the base member side insertion hole 78 communicate coaxially when the cover member side protrusion 84 is fitted into the protrusion insertion hole 77. It is like that.

  The swing member 90 includes a substantially cylindrical base 91 having a support shaft insertion hole 92 into which a cylindrical support shaft (swing shaft) 61 can be inserted, and a radially outward (upward) direction from the base 91. ) And an elongated opening / closing portion 93 provided extending linearly, a cylindrical weight portion 95 provided substantially in the opposite direction (downward) with respect to the opening / closing portion 93 with the base portion 91 interposed therebetween, and the weight portion 95 And a metal weight 99 that is detachably attached thereto. One end of the support shaft 61 inserted into the support shaft insertion hole 92 of the base portion 91 is fitted into a support shaft fixing hole (not shown) of the base member 70, and the other end portion of the support shaft 61 is supported by the cover member 80. It is adapted to be fitted into a shaft fixing hole (not shown), whereby the swinging member 90 can swing within a vertical plane around the support shaft 61.

  The opening / closing part 93 is formed in a rectangular flat plate shape, and protrudes outward from the swinging member support 60 with a protruding length corresponding to the swinging position. The front side of the opening / closing part 93 is a launch side contact surface 93a for contacting the game ball that has passed through the launch rail 12, and the back side is contacted with a game ball that returns from the game area PA toward the launch rail 12. This is a return side contact surface 93b. The return-side contact surface 93b of the opening / closing part 93 can contact the restriction piece 64 of the base member 60, and the return-side contact surface 93b contacts the restriction piece 64 in this manner, whereby the swinging member 90 rotates in the clockwise direction. Is prevented from swinging.

  At the tip of the opening / closing part 93, a cutting part having a saw blade shape (so-called tape cutter shape) in which the cutting edge line extends along the width direction of the opening / closing part 93 (in other words, the direction substantially orthogonal to the passing direction of the game ball). 94 is formed in an exposed state. The cutting portion 94 is integrally formed at the tip end portion of the opening / closing portion 93 by molding the swing member 90 such as injection molding, and this tip portion is formed on the parting line surface (PL surface: FIG. 11) and using the protrusion (burr) formed at the position of the parting line, the tip of the opening / closing part 93 is easily formed as a sharp edge-shaped cutting edge. And the cutting performance can be improved.

  Further, as shown in FIG. 7, the ball return preventing device 50 is disposed in a state of being sandwiched between the decorative plate 11 and the glass assembly 5a of the glass door 5 at the upper end portion of the inner rail 12b. When the game ball B is brought into contact with the decorative board 11 or the glass assembly 5a in the firing rail 12, the length of the game ball B in the plan view is determined so that the cut portion (cutting blade) 94 is formed at 90. So that the center (see the central axis line X) of the cut plate 94 can always overlap with the cut portion 94, both end portions of the cut portion 94 are within a range not exceeding the radius value of the game ball B from the inner ends of the decorative plate 11 and the glass assembly 5a. It is formed over the region where it is located. As a result, even when the game ball B launched by the game ball launching device (not shown) passes near the decorative plate 11 side (cell surface side) and passes through the launch rail 12 toward the glass assembly side. However, the center of the game ball B passes directly above the cutting part 94, and when an illegal threaded ball passes on the firing rail 12, the threaded body extending from the threaded ball is reliably cut. 94 can be hooked.

  A weight mounting hole 95a that opens in the front-rear direction is formed at the center of the weight portion 95, and a convex strip provided on the outer peripheral surface of the weight 99 is formed on a concave strip provided on the inner peripheral surface of the weight mounting hole 95a. Are attached to the weight attachment hole 95a (that is, to the weight portion 95). The weight portion 95 projects outward from the rocking member support 60 according to the rocking position. On the outer peripheral surface of the weight portion 95, a pair of mountain-shaped projections 96, 96 are provided substantially in parallel along the width direction of the swing member 90, and each projection 96 has a V-shape that opens upward. A groove (V-shaped groove) 97 is formed, and an edge 96a of the projection 96 defining the V-shaped groove 97 is formed in a sharp blade shape (that is, functions as a cutting portion). . The V-shaped groove 97 of the one projecting portion 96 and the V-shaped groove 97 of the other projecting portion 96 are formed to have substantially the same depth. For example, the groove bottom (valley bottom) is somewhat larger than the wire diameter of the fishing line. Concave groove-shaped counterbore portions 98 are respectively formed. Further, the weight portion 95 can come into contact with the side wall portion 73 of the base member 70. When the weight portion 95 comes into contact with the side wall portion 73 in this way, the swinging member 90 swings counterclockwise. It has come to be stopped.

  In order to assemble such a ball return prevention device 50, first, the support shaft 61 fitted into the support shaft fixing hole (not shown) of the base member 70 is inserted into the support shaft insertion hole 92 of the swing member 90. The swing member 90 is attached to the base member 70 side. Subsequently, the cover member 80 is attached to the base member 70. At this time, the base member side protrusion 75 provided on the base member 70 is inserted into the protrusion insertion hole 82, and the cover member 80 is provided on the cover member 80. By inserting the cover member-side protrusion 84 into the protrusion insertion hole 77, the base member 70 and the cover member 80 are aligned, and the swinging member 90 swings around the support shaft 61 surrounded by these members. It is supported freely. Then, the cover member mounting screw B2 is inserted into the cover member mounting screw insertion hole 81 from the surface side of the cover member 80, and is screwed into the cover member mounting screw hole 76 on the base member 70 side. As a result, the base member 70 and the cover member 80 are coupled, and the swinging member 90 can move around the support shaft 62 in the space 62 in which the opening / closing portion 93 and the weight portion 95 are surrounded by the side wall portion 73 of the base member 70. It will be able to swing freely in the range.

  Here, the swinging of the swinging member 90 in the counterclockwise direction is limited when the weight portion 95 comes into contact with the side wall portion 73 of the base member 70, and the swinging in the clockwise direction is performed by the opening / closing portion 93. It is restricted when it comes into contact with the regulating piece 74 of the base member 70. Therefore, the swing member 90 has a position where the weight portion 75 is brought into contact with the side wall portion 73 (this is referred to as “non-oscillation position”) and a position where the opening / closing portion 93 is brought into contact with the regulating piece 74 (this is referred to as “ (Referred to as “maximum swing position”). In other words, the swing member 90 swings between a position where the outlet opening 12c of the firing rail 12 is closed (non-swing position) and a position where the outlet opening 12c is opened (maximum swing position). Can do. Here, the closing of the outlet opening 12c is not limited to the meaning of completely closing the outlet opening 12c, but also includes a closed state that prevents the game ball in the game area PA from returning to the firing rail 12 side. It is a concept. Further, the opening of the outlet opening 12c is not limited to the meaning of completely opening the outlet opening 12c, but may be an open state that does not prevent the game ball that has passed through the firing rail 12c from being released to the gaming area PA. It is a concept that includes.

  As shown in FIG. 8 and the like, the ball return prevention device 50 assembled in this way has a balanced posture due to the weight of the weight portion 95 (weight 99), that is, the swinging member 90 is in the non-swinging position. The opening / closing part 93 extends substantially vertically to the right of the upper end part of the inner rail 12b, and the upper end part of the opening / closing part 93 is located at a substantially intermediate height between the outer rail 12a and the inner rail 12b. It is attached to the game board 10 in a posture. When the ball return prevention device 50 is attached to the predetermined position of the game board 10, the opening / closing part 93 of the swing member 90 is in a state of closing the game ball outlet opening 12 c on the firing rail 12. The ball return prevention device 50 is mounted on the game board 10 by inserting the positioning boss 72 of the swinging member support 60 into a positioning hole (not shown) on the front surface of the game board 10 and fixing the fixing screw B1 to the cover member. It is made by screwing into the game board 10 through the insertion holes 83 and 78 from the surface side of 80.

  In a state where the ball return prevention device 50 is attached at a predetermined position on the game board 10, the lower end of the weight portion 95 is located at a non-oscillating position in contact with the side wall portion 73 of the base member 70 (see FIG. 13 (a)), it is not possible to oscillate counterclockwise from this position, and only oscillation in the clockwise direction is allowed. The clockwise swing limit is until the opening / closing portion 93 is brought into contact with the restriction piece 74 of the base member 70 (until the maximum swing position is reached) (see FIG. 13B).

  Next, the operation of the ball return prevention device 50 configured as described above will be described with reference to FIGS. 14 and 15 additionally. Here, FIG. 14 (A) is a view corresponding to FIG. 10 showing a state in which the thread I is hooked on the cutting portion 94 of the swinging member 90 in the ball return prevention device 50, and FIG. FIG. 15 is a view corresponding to FIG. 10 showing a state in which the filament I is in contact with the weight portion 95 of the swing member 90 in the return prevention device 50. FIG. FIG. 6 is a perspective view showing a state in which a thread I is caught on a counterbore part 98.

This ball return prevention device 50 has the original function of preventing the game ball B released from the outlet opening 12c of the launch rail 12 to the game area PA from returning to the launch rail 12 again, and has a threaded ball as described above. It plays a serve to deter unauthorized winning act of using the B _I. During the game, as shown in FIG. 13, the game ball B that has been hit by the game ball launcher and passed through the launch rail 12 is opened and closed by the opening / closing portion 93 (launching side contact surface 93a) of the swing member 90 of the ball return prevention device 50. ) And the rocking member 90 is swung clockwise by the pressing force, so that the outlet opening 12c is opened and the game ball B is placed in the game area PA. Is released. When the game ball B passes through the outlet opening 12c, the swing member 90 swings counterclockwise (reverse direction) due to the weight of the weight portion 95, and returns to the non-swing position before the subsequent game ball arrives. . As a result, the game ball B in the game area PA rebounds at the rubber cushion or the like on the game board 10 and collides with the opening / closing part 93 (return side contact surface 93b) of the swing member 90 from the right and moves it to the left ( Even if pressed in the counterclockwise direction), the swinging member 90 cannot swing in that direction by the side wall portion 73, and the posture of the non-swinging position is maintained, so that the return ball from the game area PA (game) The ball B) is flipped into the game area PA by the opening / closing part 93 of the swinging member 90.

On the other hand, when the yarn with ball B _I mounted the filament I is hitting fired by game ball shooting device, is discharged from the outlet opening 12c into the game area PA beyond the sphere anti-return device 50, as described above, since the yarn with sphere B _I flowing down on the game board 10 under the action of gravity, filament I attached to the thread with balls B _I is hooked in the opening and closing portion 93 distal of the pivot member 90 anchored (See FIG. 14A). The wrongdoer from this state, after the yarn with balls B _I, for example, a winning hole 15a of the regular winning device 15 is guided to winning ball detector 15s, the inlet of the winning ball detector 15s the yarn with balls B _I When an operation of pulling or feeding the filament I from the outside is performed for repeated passage, the filament I is slid in contact with the blade-shaped cutting portion 94 at the tip of the opening / closing portion 93 of the swinging member 90 and cut. because, by dividing the filament I from yarn with balls B _I can suppress unauthorized operations. Accordingly, it is possible to prevent illegal occurrence by effectively deterring an illegal winning act that illegally operates a game ball with a filamentous body and causes the winning ball detector to detect continuous winnings. .

Further, in a state where the filament I is hooked and tethered to the distal end of the opening / closing portion 93 of the swinging member 90, a subsequent game ball that has passed through the firing rail 12 presses the swinging member 90 and presses the swinging member 90. Is pivoted in the clockwise direction, the weight portion 95 of the swing member 90 protrudes toward the outlet opening 12c, and the filament I is biased in a direction perpendicular to the passing direction of the game ball (threaded ball B _I ). Thus, it is possible to apply an appropriate tension to the filament I by being hooked to the counterbore portions 98 of the plurality of V-shaped grooves 97 provided at different positions and locked between two points. For this reason, the thread-like body I tethered to the tip of the opening / closing part 93 of the swinging member 90 can be deeply bitten into the cutting part 94 and can be brought into pressure contact therewith. made, consisting of yarns with balls B _I it is possible to divide the filament I more reliably.

  Further, in a state where the filament I is hooked and anchored to the tip of the opening / closing part 93 of the swinging member 90, a subsequent game ball that has passed through the launch rail 12 presses the swinging member 90 and presses the swinging member 90. Is pivoted clockwise, the weight portion 95 of the swing member 90 protrudes toward the outlet opening 12c, and the blade-like edge portion 96a (cut portion) of the projection 96 provided on the weight portion 95 is thread-like. In order to press-contact with the body I, the filament I can be cut not only by the first cutting portion 94 but also by the edge 96a which is the second cutting portion.

  As described above, according to the ball return prevention device 50 of the ball game machine configured as described above, the winning ball detector continuously detects the winning of the game ball by illegally manipulating the filaments such as the fishing line attached to the game ball. It is possible to effectively deter the illegal winning action to be detected by the player.

  Although the preferred embodiments of the present invention have been described so far, the scope of the present invention is not limited thereto. For example, in the above-described embodiment, the cutting portion 94 is not limited to a resin molded product formed integrally with the swing member 90, and a metal cutting blade may be provided at the distal end portion of the swing member 90. In addition to the saw blade shape (tape cutter shape), the shape of the cutting blade may be a flat blade shape, a triangular blade shape, a circular blade shape, or the like.

  Further, in the above-described embodiment, the swinging member 90 is closed from the maximum swinging position (position where the outlet opening 12c is opened) using the dead weight of the weight portion 95 (weight 99) to close the outlet opening 12c. However, the present invention is not limited to this, and a spring or the like that biases the swinging member 90 in the non-swinging position direction (counterclockwise direction in FIG. 6 and the like). A biasing means may be provided separately.

  In the embodiment described above, a pachinko machine has been illustrated and described as an example of a bullet ball game machine to which the present invention is applied. However, the present invention is not limited to this, and for example, an arrangement ball, a sparrow ball The same effect can be applied to game machines and the like, and similar effects can be obtained.

PM Pachinko machine (ball game machine)
PA game area B game ball B _I ball with thread I filament 10 game board 12 launch rail 12c outlet opening 50 ball return prevention device 60 swing member support 61 support shaft (swing shaft)
90 swinging member 91 base 93 opening / closing part 94 cutting part (first cutting part)
95 Weight part 96 Protrusion part 96a Edge part (2nd cutting part)
97 V-shaped groove 98 counterbore (groove bottom of V-shaped groove)
99 weights

Claims (3)

In a ball game machine configured to guide a game ball launched by a game ball launching mechanism by a launch rail provided on a game board and release the game ball into a game area on the game board, the game ball on the launch rail A ball return prevention device that is provided in the vicinity of an exit opening into the game area and prevents a game ball launched into the game area from returning to the launch rail,
A base portion is pivotally connected to a swing shaft extending in a substantially vertical direction with respect to the game board, and an opening / closing portion extending from the base portion toward one end side closes the outlet opening around the swing shaft and the position Provided with a swinging member that can swing between the position where the outlet opening is opened,
The swinging member is always urged in a direction to close the outlet opening, and when the opening / closing portion is pressed by a game ball passing through the launch rail, the opening opening is opened by the pressing force. Oscillate,
A ball return prevention device for a ball game machine, comprising a blade-like cutting part at a tip of the opening / closing part of the swing member. A rocking member support having the rocking shaft and fixed on the game board;
The swing member is provided on the other end side with the base portion, the opening / closing portion extending from the base portion to one end side, and the base portion therebetween, and is swingable about the swing shaft, and is caused by its own weight. A weight portion that urges the opening / closing portion in a direction to close the outlet opening,
The weight portion protrudes from the swing member support body into the outlet opening according to the swing position of the swing member,
A plurality of protrusions extending in a direction intersecting with the passing direction of the game ball are provided on the protruding portion of the weight portion,
The protrusion has a V-shaped groove that opens in a V shape toward a direction substantially perpendicular to the direction in which the game ball passes in the outlet opening,
2. The ball game machine according to claim 1, wherein the groove bottoms of the V-shaped grooves of the plurality of protrusions are provided so as to be biased in a direction substantially perpendicular to the passing direction of the game ball. Ball return prevention device. In a ball game machine configured to guide a game ball launched by a game ball launching mechanism by a launch rail provided on a game board and release the game ball into a game area on the game board, the game ball on the launch rail A ball return prevention device that is provided in the vicinity of an exit opening into the game area and prevents a game ball launched into the game area from returning to the launch rail,
An oscillating member support having an oscillating shaft fixed on the game board and extending in a direction substantially perpendicular to the game board;
A base portion that is pivotally connected to the swing shaft, extends from the base portion toward one end side, and can swing between a position that closes the outlet opening and a position that opens the outlet opening around the swing shaft. An opening / closing portion and a weight portion provided on the other end side with the base portion interposed therebetween and capable of swinging about the swinging shaft and biasing the opening / closing portion in a direction to close the outlet opening by its own weight. A rocking member having
The swinging member is constantly urged in the closing direction of the outlet opening by the weight part, and when the opening / closing part is pressed by a game ball that has passed through the launch rail, the pressing force of the opening member It swings in the opening direction,
The weight portion projects into the outlet opening from the rocking member support according to the rocking position of the rocking member,
A ball return prevention device for a ball game machine, wherein the protruding portion of the weight portion is provided with a blade-like cutting portion.

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