JP2014217619A - Pachinko machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pachinko machine capable of surely preventing illegal act using a ball with thread, with a simple configuration.SOLUTION: In a pachinko machine P, a game ball shot by a shooting device 23 is launched to a game region 8 through a shooting guide passage 34, and a ball return prevention member 41 is rotatably pivoted at an outlet of the shooting guide passage 34. An opening/closing valve 41a, a weight part 41b and a regulation valve 41c are provided to the ball return prevention member 41. When the opening/closing valve 41a rotates and returns to a position for closing the outlet of the shooting guide passage 34, the regulation valve 41c is kept at a posture for escaping from the shooting guide passage 34. When a ball with thread B1 is launched to the game region 8, the regulation valve 41c is made to protrude inside the shooting launch guide passage 34 following rotation of the ball return prevention member 41 while a string-like body 45 connected to the ball with thread B1 is hooked on a tip end of the opening/closing valve 41a. Thus, a state is kept to prevent passage of a following ball by the regulation valve 41c.

Description

  The present invention relates to a pachinko machine that uses a game ball to play a game.

  In general, a pachinko machine has a game board covered by a front door having a transparent glass plate, and a game ball is launched from a launcher toward a game area formed on the front surface (board face) of the game board. It is supposed to be. The game board is provided with an outer rail that guides a game ball launched from the launching device to the upper side of the game area, and an inner rail that defines most of the peripheral wall of the game area. The space between the rails is the launch guide passage. A ball return prevention member is provided in the vicinity of the exit of the launch guide passage, and the ball return prevention member prevents the backflow of the game ball to the launch guide passage side.

  In such pachinko machines, there are many goto acts that illegally exploit game balls by various methods, and the tricks are becoming more sophisticated as the days go by. For example, after creating a fraudulent ball called a threaded ball with a string attached to a game ball, and holding the string in hand, the fraudulent ball is loaded into the launcher and launched into the game area. An illegal act called “thread goto”, which freely manipulates a ball with a thread reaching a game area by manipulating a string-like body held in a hand, has become a problem. In such a “thread goto” action, when the ball with thread reaches the game area, the string-like body connected to the game ball is caught by the tip of the ball return prevention member. By operating the string-like body as a fulcrum, the ball with thread can be guided to the start winning opening and the general starting winning opening arranged in the game area.

  Therefore, conventionally, in order to prevent such “thread goto” action, a cutting blade is provided at the tip of the ball return prevention member, and when the threaded ball reaches the game area, it is connected to the threaded ball. A pachinko machine has been proposed in which a string-like body is cut with a cutting blade by hooking the string-like body onto the cutting edge of the cutting blade (see, for example, Patent Document 1). In this conventional example, when the string-like body connected to the ball with thread is caught by the cutting blade of the ball return prevention member, the person who performs the fraudulent act tries to win the ball with thread at the start winning opening etc. When the string-like body is operated to be tensioned / relaxed from the outside of the pachinko machine, the string-like body is cut by the stress repeatedly applied to the cutting blade, so that the threaded ball cannot be freely manipulated.

JP 2012-120597 A

  In the conventional pachinko machine disclosed in Patent Document 1, when a string-like body connected to a ball with a thread is hooked on a cutting blade provided on a ball return prevention member, the string-like body is repeatedly applied to the cutting blade. Since it is cut by the applied stress, if a material that is easy to cut like cotton is used as the material of the string, it is relatively easy to cut the string to prevent the “thread goto” action. be able to. However, when a strong string-like body like a fishing line is used, it becomes very difficult to cut the string-like body with a cutting blade, and in that case, an illegal act using a ball with a thread can be prevented. Disappear.

  The present invention has been made in view of the actual situation of the prior art, and an object thereof is to provide a pachinko machine that can reliably prevent an illegal act using a threaded ball with a simple configuration.

  In order to achieve the above object, the present invention includes a launching means for launching a game ball, a launch guide passage for guiding the game ball fired by the launch means to a game area, and an exit of the launch guide passage. A ball return prevention member pivotally supported by an existing base member, and allowing the ball to flow into the game area by rotating the ball return prevention member in a direction to open the outlet. In addition, in the pachinko machine in which the return of the game ball to the launch guide passage is prevented by the rotation return of the ball return prevention member in the direction of closing the outlet, the ball return prevention member is There is an on-off valve that opens and closes the outlet of the firing guide passage, a weight portion that urges the on-off valve in the closing direction, and a regulating valve that rotates integrally with the on-off valve and enters and exits the firing guide passage. And the on-off valve has the firing guide When the return valve is pivoted back to the position for closing the exit of the road, the restriction valve is in a position to be withdrawn from the firing guide passage, and the on-off valve is turned to a position to open the exit of the launch guide passage. The restriction valve protrudes into the firing guide passage at a position behind the opening / closing valve.

  In the pachinko machine configured as described above, in a normal state, the ball return prevention member is stopped in a posture in which the on-off valve faces the outlet of the firing guide passage, and the regulating valve is located downstream from the launch guide passage. It is held in the position to leave. In this state, when a normal game ball is launched from the launching device toward the game area, the game ball passes through the regulating valve while coming up the launch guide passage and contacts the on-off valve, and then the on-off valve is contacted by the contact force. Therefore, the ball return preventing member rotates in a direction in which the opening / closing valve opens the outlet of the firing guide passage, and the restriction valve projects into the inside of the firing guide passage in conjunction with the ball return prevention member. When the game ball is launched into the game area in this way, the ball return prevention member returns to the posture in which the on-off valve faces the exit of the launch guide passage, so that the game heading from the game area toward the launch guide passage side The return movement of the ball is blocked by the on-off valve.

  On the other hand, when using a game ball (threaded ball) to which a string-like body is bonded, if the ball with the thread is launched from the launch device toward the game area, the ball with the thread is similar to a regular game ball. After ascending the firing guide passage, after passing through the regulating valve and contacting the opening / closing valve of the ball return prevention member, the contact force pushes the opening / closing valve and enters the game area. At that time, the string-like body connected to the threaded ball is caught on the tip of the on-off valve, so that the ball return preventing member maintains its open state under the weight of the threaded ball, and the regulating valve is located inside the firing guide passage. It remains protruding. As a result, when the ball with thread is launched into the game area, the game ball that is subsequently launched from the launching device collides with the restriction valve on the front side of the exit of the launch guide passage, and the subsequent ball is placed in the game area. Cannot be launched. In other words, since it is possible to create a state in which the game ball is not discharged from the game area out port, even if the ball with a thread is manipulated in this state to win the start winning port or the general starting winning port, this is illegal. In some cases, it is possible to easily find an illegal act, and the illegal act of acquiring a large number of prize balls using a threaded ball can be substantially invalidated.

  In the above configuration, if the restriction valve has a notch groove that opens on the tip side, the string-like body caught on the tip of the on-off valve is in contact with the bottom of the notch groove, and the string-like body and the restriction Since the contact point with the valve approaches the center of rotation of the ball return prevention member by the groove depth of the notch groove, it is preferable that the return operation of the regulating valve due to the tensile force from the string-like body can be reliably prevented. .

  Further, in the above configuration, a pair of tapers that are narrowed toward the center portion in the width direction are attached to the distal end side of the on-off valve, and if a recess is formed between these tapers, When the on-off valve of the ball return prevention member is pushed away to reach the game area, the string-like body is guided by a taper and positioned in the recess, thus reliably preventing the string-like body from falling off the on-off valve. This is preferable.

  In the pachinko machine according to the present invention, when a game ball (ball with a thread) connected to a string-like body is launched toward the game area, the string-like body is caught on the tip of the opening / closing valve of the ball return prevention member. Is projected to the inside of the firing guide passage and is maintained in a state in which the passage of the succeeding sphere is prevented, so that illegal acts using the threaded ball can be reliably prevented with a simple configuration.

1 is an external perspective view of a pachinko machine according to an embodiment of the present invention. It is an external appearance perspective view of the state which opened the front door of this pachinko machine. It is a rear view of this pachinko machine. It is a front view which shows the principal part of the game board with which this pachinko machine is equipped. It is a perspective view of the control rail provided in the game board shown in FIG. It is a disassembled perspective view of the ball return prevention mechanism provided in the upper end of the control rail shown in FIG. It is a perspective view of the ball return prevention member with which the ball return prevention mechanism of FIG. 6 is equipped. It is explanatory drawing which looked at this ball return prevention member from the arrow A direction of FIG. It is explanatory drawing which looked at this ball | bowl return prevention member from the arrow B direction of FIG. It is explanatory drawing which looked at this ball | bowl return prevention member from the arrow C direction of FIG. It is operation | movement explanatory drawing of this ball | bowl return prevention mechanism when a regular game ball is used. It is operation | movement explanatory drawing of this ball | bowl return prevention mechanism when using a ball | bowl with a thread | yarn.

  DESCRIPTION OF EMBODIMENTS Embodiments of the invention will be described with reference to the drawings. As shown in FIG. 1, a pachinko machine P according to this embodiment is a vertical rectangular machine frame 1 installed in an island facility of a game hall, A main body frame 2 is attached to the machine frame 1 so as to be openable and closable, and a front door 3 is attached to the front surface of the main body frame 2 so as to be openable and closable. The front door 3 is made of glass or plastic. A transparent plate 4 made of or the like is attached.

  As shown in FIG. 2, an upper bearing body 5a and a lower bearing body 5b are fixed to the left frame portion of the machine casing 1, and a large speaker is provided at the lower left corner below the lower bearing body 5b. 6 is disposed. On the other hand, first pins (not shown) are provided at both upper and lower ends of the left frame portion of the main body frame 2, and these first pins are pivotally supported by the corresponding upper and lower bearing bodies 5a and 5b. The main body frame 2 is openable and closable with respect to the machine frame 1.

  A game board 7 is accommodated inside the upper part of the main body frame 2, and the board surface (front surface) of the game board 7 is visible through the transparent plate 4. The game board 7 has a game area 8 on the board surface, and the game area 8 is visible from the outside through the transparent plate 4 of the front door 3. The game area 8 is partitioned and formed in a substantially circular shape by the guide rail 9 and the regulation rail 10, and a game ball launched from a launching device 23 described later flows down in the game area 8. Further, in the game area 8, a variable display unit 24 having a display device 24a, a pair of start winning ports 25, 26, a plurality of general winning ports 27, a through chucker 28 as a passing gate, and a big winning port. Although not shown in the figure, there are provided detection sensors for detecting the passage of game balls inside the start winning ports 25, 26, the general winning port 27, and the big winning port. It has been.

  Briefly describing each of the above-mentioned members provided in the game area 8, a stage 30 is provided below the variable display unit 24, and the pair of start winning ports 25 and 26 are vertically moved to a position directly below the stage 30. Arranged in two layers in a stacked state. The upper start winning opening 25 is a non-actuated winning opening having no movable piece, while the lower start winning opening 26 is an actuating (electric tulip structure) winning opening having a pair of movable pieces. Yes. When a game ball enters one of the start winning openings 25 and 26, an electronic lottery for special symbol display is performed in response to the game ball, and the change display and stop of the effect symbol on the display screen of the display device 24a are performed. Display is performed. In addition, when a game ball passes through the through chucker 28, an electronic lottery with a normal symbol display is performed, and when the lottery result is a win, the movable piece of the start winning opening 26 is temporarily opened to play the game ball. It is designed to allow entry.

  The attacker device 29 is a device that is activated when the player wins and shifts to the jackpot gaming state as a result of an electronic lottery of special symbol display performed when a game ball enters the start winning holes 25 and 26. Specifically, when the lottery result of the special symbol display is a win, the change stop of the effect symbol on the display screen of the display device 24a of the variable display unit 24 is stopped at the special symbol such as “777”, for example. The attacker device 29 is repeatedly opened a plurality of times to expose the internal big prize opening. The attacker device 29 maintains the open state until, for example, 30 seconds elapses for one opening operation or until 10 game balls enter the big winning opening, and after repeating the opening operation, for example, 15 times, the jackpot ends. . When game balls enter the start winning holes 25 and 26, a special symbol display lottery result is performed and a predetermined number of game balls are paid out to the player as prize balls. When entering, only a predetermined number of game balls are paid out. The game balls that have not entered any of the start winning ports 25 and 26 or the general winning port 27 are discharged from the out port 31 provided at the lowermost end of the game area 8 to the back side of the game board 7. It has become.

  The main body frame 2 located below the game board 7 is an installation part 2a covered by the lower part of the front door 3, and a game ball is launched toward the game area 8 in the lower center of the installation part 2a. A launching device 23 is disposed. The launcher 23 has a hammer 23a for hitting a game ball, and the hammer 23a is rotated (oscillated) using a rotary solenoid or the like as a drive source. Further, a locking device 11 having a cylinder lock 11 a is installed on the right side frame portion of the main body frame 2, which is not shown, but this locking device 11 includes a rear locking rod disposed on the back surface of the main body frame 2. A front locking rod disposed on the front surface of the main body frame 2 is provided. Normally, the main body frame 2 is locked to the machine frame 1 by the rear locking bar of the locking device 11, and the front door 3 is locked to the main body frame 2 by the front locking bar. Then, when a key (not shown) is inserted into the key hole of the cylinder lock 11a and the key is rotated in one direction (for example, clockwise), the rear locking rod is moved downward to unlock the main body frame 2. Yes. Further, when the key inserted into the key hole of the cylinder lock 11a is rotated in the other direction (counterclockwise), the front locking bar moves upward and the front door 3 is unlocked.

  Second pins (not shown) are provided at both upper and lower ends of the left side frame portion of the front door 3, and these two second pins are inserted into upper and lower shaft holes (not shown) of the main body frame 2. The front door 3 can be opened and closed with respect to the main body frame 2. Returning to FIG. 1, the front door 3 has a large opening 3 a facing the board surface of the game board 7, and the opening 3 a is closed by the transparent plate 4. A relatively small speaker 12 is disposed on the left and right of the upper part of the front door 3, and the speaker 12 and the large speaker 6 described above generate various sound effects relating to the game. . Further, at the lower part of the front door 3, the upper tray 13 for receiving game balls paid out from a prize ball dispensing device (described later) disposed on the back surface of the game board 7 and the upper tray 13 are discharged from the upper tray 13. A lower tray 14 for storing game balls and a push button 15 that can be pressed by the player are provided. An operation handle 16 for adjusting the firing strength of the launching device 23 is provided on the right side of the upper tray 12. Is arranged.

  As shown in FIG. 3, on the back side of the pachinko machine P, there are a main control processing unit 17 that performs main processing relating to the game, and various devices such as a display device and a speaker in response to a command from the main control processing unit 17. A sub-control processing unit 18 that controls the game, a prize ball paying device 19 that pays out a predetermined number of game balls as prize balls to the upper tray 13, and a prize ball paying device 19 in response to a command from the main control processing unit 17 The payout control processing unit 20 for controlling the operation, the firing control processing unit 21 for controlling the operation of the launching device 23 according to the amount of rotation operation of the operation handle 16, and various information such as the number of winning balls and the number of jackpots, An external terminal board 22 for outputting to the hall computer is provided. The main control processing unit 17 includes a CPU (Central Processing Unit), a ROM (Read Only Memory) that stores a predetermined control program, and a RAM (Temporary storage of generated processing information and a RAM that deletes the stored information ( And a control board (main board) on which a random access memory (Random Access Memory) and the like are mounted. When the CPU reads and executes various programs and data stored in the ROM, main processing relating to the game is performed.

  As shown in FIG. 4, on the left side of the game area 8 of the game board 7, an outer rail 32 that guides the game ball launched from the launch device 23 to the upper side of the game area 8, and the outer peripheral surface of the regulation rail 10 An inner rail 33 extending along the inner rail 33 is provided, and a space portion sandwiched between the outer rail 32 and the inner rail 33 is a launch guide passage 34. In FIG. 4, the variable display unit 24 (display device 24a) and the start winning ports 25 and 26 provided in the game area 8 are not shown. The outer rail 32 is arranged in an arc shape from the left position away from the out port 31 through the left end and upper end portion of the game board 7, and the upper end side of the outer rail 32 is continuous with the guide rail 9. The inner rail 33 is arranged in an arc shape from a position slightly on the left side of the outlet 31 to the upper end portion of the game board 7, and a ball return that prevents the game ball from returning from the game area 8 to the upper end portion of the firing guide passage 34. A prevention mechanism 35 is provided.

  Returning to FIG. 2, a launch rail 36 is provided in the installation portion 2 a below the game board 7, and the launch rail 36 is inclined with an upward slope toward the launch guide passage 34. On the other hand, a rectifier 37 communicating with the upper tray 13 is protruded on the rear surface side of the front door 3, and in the state where the front door 3 is locked to the main body frame 2, a supply port 37 a that is an outlet of the rectifier 37. Is positioned at the lowermost right end of the firing rail 36. Thereby, the game balls stored in the upper tray 13 are supplied one by one from the supply port 37a to the firing rail 36 while being rectified by the rectifier 37, and the game balls held on the firing rail 36 are supplied to the launching device 23. It is fired in the direction of the firing guide passage 34 by hitting the hammer 23a. In addition, a lower part of the space from the launch rail 36 to the launch guide passage 34 is a foul ball collection path 38, and in a state where the front door 3 is locked to the main body frame 2, A ball collection portion 14a protruding to the back side is positioned at the lowermost part of the foul ball collection path 38.

  Next, the above-described ball return prevention mechanism 35 will be described in detail with reference to FIGS. As shown in FIG. 5, the ball return prevention mechanism 35 includes a main body case 39 formed integrally with the upper end portion of the regulation rail 10, a cover 40 integrated with the main body case 39, and the main body case 39 and the cover 40. The main body case 39, the cover 40, and the ball return preventing member 41 are all molded products made of a synthetic resin material.

  As shown in FIG. 6, the main body case 39 stands up from a bottom plate portion 39a that continuously swells from the regulation rail 10 to the game area 8 side with substantially the same width, and one end portion in the width direction of the bottom plate portion 39a. A side plate 39b extending along the board surface of the board 7 is provided, and a space surrounded by the bottom plate 39a and the side plate 39b is a notch S1. That is, the body case 39 is formed with a notch S1 that opens the front side facing the transparent plate 4 and the top side facing the firing guide passage 34, and the upper opening end of the notch S1 is a stopper. It is a wall 39c. The stopper wall 39c is a wall surface crossing the upper end portion of the bottom plate portion 39a in the width direction, and the mechanical strength of the stopper wall 39c is enhanced by forming the upper end portion of the bottom plate portion 39a into a cylindrical shape.

  A bearing portion 39d and a guide hole 39e are formed in the side plate portion 39b of the main body case 39, and the guide hole 39e extends in an arc shape along an imaginary circle centering on the bearing portion 39d. Further, a projection 39f is formed on the back surface of the side plate portion 39b, and a similar projection is also formed on the back surface of the regulation rail 10 (not shown). Then, by inserting these protrusions 39f into positioning holes (not shown) of the game board 7, the main body case 39 and the regulation rail 10 are attached to predetermined positions of the game board 7.

  The cover 40 is a plate-like body having a mounting hole 40a, and a bearing portion 40b is formed on the inner surface thereof. The cover 40 is fixed to the main body case 39 in a state in which the opening on the front side of the notch S1 is closed by inserting a screw 42 into the mounting hole 40a and screwing it onto the end face of the stopper wall 39b. The base case 43 is formed by integrating the main body case 39 and the cover 40 as described above. The base member 43 is surrounded by the wall surface (the bottom plate portion 39a and the side plate portion 39b) of the notch S1 and the cover 40. A hollow is defined.

  As shown in FIGS. 7 to 10, the ball return preventing member 41 has an on-off valve 41a, a weight part 41b, and a restriction valve 41c. The on-off valve 41a and the restriction valve 41c are substantially orthogonal with respect to the weight part 41b. It protrudes in the direction of A shaft hole 41d is provided on the base end side of the on-off valve 41a, and both ends of the support shaft 44 inserted through the shaft hole 41d are engaged with the side plate portion 39b and the bearing portions 39d and 40b of the cover 40, respectively. The ball return prevention mechanism 35 having a structure in which the ball return prevention member 41 is pivotally supported in the recess of the base member 43 is assembled.

  The on-off valve 41a of the ball return preventing member 41 is a rectangular plate-like body, and a pair of tapers 41e that narrow toward the center in the width direction are attached to the front end side of the on-off valve 41a. A recess 41f is formed between 41e. The restriction valve 41c is a plate-like body that is shorter than the opening / closing valve 41a, and the restriction valve 41c is formed with a notch groove 41g that opens to the vicinity of the weight part 41b by opening the distal end side. The weight portion 41b is thicker than the on-off valve 41a and the regulating valve 41c, and an engagement pin 41h is projected from one end surface in the width direction of the weight portion 41b. The engaging pin 41h is inserted into a guide hole 39e formed in the side plate portion 39b of the main body case 39, and moves in the guide hole 39e as the ball return preventing member 41 rotates.

  As shown in FIG. 11A, in a normal state, the ball return preventing member 41 is urged to rotate in one direction around the support shaft 44 by the weight of the weight portion 41b, and is engaged by receiving this urging force. Since the pin 41h is in contact with one end of the guide hole 39e, the ball return preventing member 41 is stopped with the position as the initial position. When the ball return preventing member 41 is stopped at the initial position in this way, the on-off valve 41a protrudes from the upper surface opening of the recess of the base member 43 toward the outlet of the firing guide passage 34 in a substantially vertical posture. The tip of the on-off valve 41a faces the outer rail 32 with an interval smaller than the diameter of the game ball. Further, the restriction valve 41c is held in a substantially horizontal posture withdrawn from the firing guide passage 34, and the tip of the restriction valve 41c is located substantially flush with the upper surface opening of the recess.

  When the regular game ball B is launched from the launching device 23 toward the game area 8 in this state, the game ball B passes through the regulating valve 41c while ascending the launch guide passage 34, and then, as shown in FIG. As shown, the game ball B pushes the on-off valve 41a and enters the game area 8. Thereby, the ball return preventing member 41 rotates in a direction to open the outlet of the firing guide passage 34 (clockwise in FIG. 11), and when the on-off valve 41a collides with the stopper wall 39c, the ball return preventing member 41 is Further rotation is restricted and the maximum opening angle is reached. At this time, the regulating valve 41c projects into the firing guide passage 34 at a position behind the on-off valve 41a in conjunction with the rotation of the ball return preventing member 41, and the tip of the regulating valve 41c is smaller than the diameter of the game ball B. Opposite the outer rail 32 with a gap. During this time, the engaging pin 41h moves in the guide hole 39e from one end to the other end. However, even if the ball return prevention member 41 reaches the maximum opening angle, the engaging pin 41h remains in the guide hole 39e. Therefore, the engagement pin 41h is not damaged by the impact force of the on-off valve 41a.

  In this way, when the game ball B pushes the on-off valve 41a of the return prevention member 41 and is driven into the game area 8, the ball return prevention member 41 receives the urging force of the weight portion 41b and moves in the reverse direction (reverse direction in FIG. 11). (Clockwise) instantaneously returns to rotation, and accordingly, the engaging pin 41h moves in the guide hole 39e from the other end toward the one end. Then, when the engagement pin 41h comes into contact with one end of the guide hole 39e, the rotation in the return direction by the urging force of the weight portion 41b is restricted and returns to the initial position, as shown in FIG. The ball return preventing member 41 stops again in a posture in which the on-off valve 41a is opposed to the outlet of the firing guide passage 34, and accordingly, the regulation valve 41c also moves backward from the firing guide passage 34 to the recess and returns to the retracted position. Therefore, even if the game ball B launched into the game area 8 collides with a game nail or the like and is bounced back, the game ball B is blocked by the opening / closing valve 41a at the exit of the firing guide passage 34.

  Next, referring to FIG. 12, a case where an illegal ball (ball with a thread) B1 is created by bonding and fixing a string 45 such as a fishing line to the game ball B and a game is played using the ball B1 with the thread is referred to. However, it will be explained.

  A person who intends to act illegally throws the threaded ball B1 into the upper tray 13 and supplies it to the launching device 23, and holds the string-like body 45 connected to the threaded ball B1 with his hand. , The ball B1 with thread passes through the regulating valve 41c while contacting the on-off valve 41a while ascending the firing guide passage 34, and then opens and closes with the contact force, like the regular game ball B described above. The valve 41a is pushed away to enter the game area 8. As a result, as shown in FIG. 12, the string-like body 45 connected to the threaded ball B1 is hooked on the tip of the on-off valve 41a, and the ball return prevention member 41 receives the dead weight of the threaded ball B1 and maintains the open state. Therefore, the regulation valve 41c maintains a state of projecting into the firing guide passage 34 at a position behind the on-off valve 41a. Here, since the concave portion 41f is formed in the central portion on the distal end side of the on-off valve 41a, and a pair of tapers 41e that are narrowed toward the concave portion 41f are attached, the string-like body 45 is along the taper 41e. Thus, the string-like body 45 can be reliably prevented from being detached from the end portion in the width direction of the on-off valve 41a. In addition, the regulating valve 41c is formed with a notch groove 41g that opens to the vicinity of the weight portion 41b by opening the distal end side, and the string-like body 45 caught on the tip of the on-off valve 41a contacts the bottom of the notch groove 41g. Therefore, the contact portion between the string-like body 45 and the regulating valve 41c approaches the rotation center (shaft hole 41d) of the ball return preventing member 41 by the groove depth of the notch groove 41g. Therefore, even if the string-like body 45 is pulled from the outside of the pachinko machine P in this state, it is extremely difficult to rotate the string-like body 45 in the return direction by the tensile force of the string-like body 45, and the ball return prevention member Thus, the return operation 41 can be reliably prevented.

  When the threaded ball B1 is thus launched into the game area 8, the game ball that is subsequently launched from the launching device 23 collides with the regulation valve 41c that projects into the launch guide passage 34. The ball cannot be launched into the game area 8. Accordingly, a state in which the game ball is not discharged from the out port 31 of the game area 8 can be created, so that a person who intends to perform an illegal act manipulates the string 45 to start the start winning port 25 or the general start winning port 27. Even if the prize is won, it is possible to easily find it in the hall computer of the amusement hall if it is an illegal prize, and the illegal act of acquiring a large number of prize balls using the threaded ball B1 is substantially invalidated. It can be.

  As described above, in the pachinko machine P according to this embodiment, the ball return prevention member 41 is provided with the opening / closing valve 41a and the regulation valve 41c, and a game ball (ball with yarn) with a string-like body 45 is provided. When B1 is fired and pushes the on-off valve 41a to reach the game area 8, the string-like body 45 connected to the threaded ball B1 is hooked on the tip of the on-off valve 41a, so that the regulating valve 41c is moved from the on-off valve 41a. Is maintained in a state of projecting into the firing guide passage 34 at the rear position, so that a game ball subsequently fired cannot collide with the regulating valve 41c and pass through the firing guide passage 34, and the ball with thread The fraudulent act of acquiring a large number of prize balls using B1 can be substantially invalidated.

  The regulation valve 41c is formed with a notch groove 41g having an open front end, and the string-like body 45 caught on the tip of the on-off valve 41a comes into contact with the bottom of the notch groove 41g, whereby the string-like body 45 is formed. And the regulating valve 41c come close to the center of rotation of the ball return prevention member 41 by the groove depth of the notch groove 41g. Even if the string-like body 45 is pulled from the outside of the pachinko machine P in this state, Further, it becomes extremely difficult to rotate the string 45 in the return direction by the tensile force of the string 45, and the return operation of the ball return preventing member 41 can be reliably prevented.

  In addition, a pair of tapers 41e that are narrowed toward the center in the width direction are attached to the tip end side of the on-off valve 41a, and a recess 41f is formed between the tapers 41e. When B1 pushes the opening / closing valve 41a and is driven into the game area 8, the string-like body 45 connected to the threaded ball B1 is guided into the recess 41f along the taper 41e, so that the string-like body 45 opens and closes. It can prevent reliably that it remove | deviates from the width direction edge part of the valve 41a.

  In the above embodiment example, the pachinko machine P provided with the start winning ports 25, 26, the attacker device 29, etc. in the game area 8 of the game board 7 has been described, but the present invention is called the V zone in the game area 8. The present invention can also be applied to a pachinko machine provided with a specific area.

7 gaming board 8 gaming area 9 guide rail 10 regulating rail 16 operation handle 23 launching device (launching means)
32 Outer rail 33 Inner rail 34 Launch guide passage 35 Ball return prevention mechanism 39 Main body case 39a Bottom plate portion 39b Side plate portion 39c Stopper wall 39d Bearing portion 39e Guide hole 40 Cover 41 Ball return prevention member 41a Open / close valve 41b Weight portion 41c Regulating valve 41d Shaft hole 41e Taper 41f Recess 41g Notch groove 41h Engagement pin

Claims (3)

A launching means for launching a game ball, a launch guide passage for guiding the game ball launched by the launch means to the game area, and a base member extending to the exit of the launch guide passage are pivotally supported by the base member. A ball return prevention member, and the ball return prevention member rotates in a direction to open the outlet, thereby allowing the game ball to flow into the game area, and the ball return prevention member closes the outlet. In the pachinko machine that prevents the return of the game ball to the launch guide passage by turning back in the direction to
The ball return prevention member includes an on-off valve that opens and closes an outlet of the firing guide passage, a weight portion that urges the on-off valve in a closing direction, and rotates integrally with the on-off valve so as to be within the launch guide passage. And a control valve to and from
When the on-off valve is rotated back to a position to close the exit of the firing guide passage, the restriction valve is in a position to retreat from the firing guide passage,
When the on-off valve rotates to a position where the outlet of the firing guide passage is opened, the regulation valve protrudes into the inside of the firing guide passage at a position behind the on-off valve. Machine.   2. The pachinko machine according to claim 1, wherein a notch groove having a distal end opened is formed in the restriction valve.   3. The open / close valve according to claim 1, wherein a pair of tapers are formed on the front end side of the on-off valve so as to be narrowed toward the center in the width direction, and a recess is formed between the tapers. A pachinko machine.