JP2008148844A - Big winning port device of pachinko game machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a big winning port device of a Pachinko game machine in a new structure capable of turning the number of game balls detected by a detection means to a preset number, not easily biting game balls, facilitating design change and advantageously preventing fraudulent actions as well further. <P>SOLUTION: A movable part 40 and a fixed part 32 cooperate to form guide surfaces 36 and 102 for receiving the game balls flowing down through a game area 98 and guiding them to a detection opening 26 of the detection means 24 in the state of opening the movable part 40 by driving mechanisms 60 and 64. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a big prize opening device for a pachinko machine.

  Conventionally, when a plurality of symbols for which variable display is started based on winning of a game ball to the start winning device is stopped and displayed in a predetermined symbol combination, a game ball has been entered a predetermined number of times under a winning game state. In other cases, a pachinko machine is known in which a big prize opening device is provided in the game board, in which the game ball cannot be entered in other cases.

  In this type of pachinko machine's large prize opening device, as described in Patent Document 1, a horizontally long door-like member is arranged so as to cover the ball entrance, and the door-like member is driven by a drive mechanism. When the opening operation is performed, a game ball can enter. In addition, the game balls that have entered the ball are guided in a direction where there is a detection sensor as detection means while being aligned in the internal space, and are then detected by the detection sensor. When a predetermined number of game balls are detected by the detection sensor, the door-like member is closed by the drive mechanism, and the game ball cannot enter.

  Therefore, in the large winning opening device of the pachinko machine having such a structure, an internal space is formed, and the entered game balls are guided in the internal space and guided toward the detection sensor. As a result, there is a problem that it takes time until a game ball enters the game ball and is detected by the detection sensor, thereby causing the game ball to enter more than a predetermined number. .

  In addition, by adopting a horizontally long door-shaped member, it is possible to receive a lot of game balls and guide them to the internal space, and accordingly, the door-shaped member is closed when the door-shaped member is closed. The number of game balls that come into contact with will also increase. Therefore, when the door-like member is operated to close, there is a possibility that the game ball is bitten.

  Furthermore, since the game balls are arranged in the internal space, when trying to change the design of the big prize opening device, especially the width direction of the entrance, the door-like member and its driving mechanism are used. There was a problem that it was difficult to divert to the big prize opening device after the design change.

  In addition, because the internal space is formed, it is possible to enter many game balls at once, but if this can open the door-like member even for a short time, It means that many game balls can be entered. Therefore, there is a problem that it is easy to be a target of fraud.

JP 2006-263265 A

  Here, the present invention has been made in the background as described above, and the problem to be solved is to set the number of game balls detected by the detecting means to a preset number. An object of the present invention is to provide a pachinko machine big prize opening device of a novel structure that can easily bite a game ball, can be easily changed in design, and can advantageously prevent fraud.

  Hereinafter, the aspect of this invention made | formed in order to solve such a subject is described. In addition, the component employ | adopted in each aspect as described below is employable by arbitrary combinations as much as possible.

  In the present invention, a plurality of symbols for which variable display is started based on a winning to a start winning device for a game ball flowing down a game area formed on the surface of a game board is stopped and displayed in a predetermined symbol combination. In the big prize opening device of a pachinko machine that is opened and closed under a gaming state that starts when the game is performed, it is opened and closed by a driving mechanism to form a guide surface that guides the gaming ball in an open state, while the gaming ball A movable part that closes the game ball passage detection opening provided in the detection means for detecting the passage of the game, and an inclined surface that protrudes in a fixed state on the mounting part to the game board and inclines toward the movable part And a fixed portion formed with the movable portion being opened and receiving a game ball flowing down the game area and guiding it to a game ball passage detection opening provided in the detection means. The guide surface That the fixed portion and the moving portion is so formed cooperate and features.

  In the big prize opening device of the pachinko machine structured according to the present invention as described above, the detection means is provided for receiving the game ball flowing down the game area in a state where the movable portion is opened by the drive mechanism. Since the guide surface for guiding to the opening for detecting the passage of game balls is formed in the game area by the cooperation of the movable part and the fixed part, the detection means is provided while aligning the game balls in the game area. It becomes possible to guide to the gaming ball passage detection opening.

  Further, in the present invention, the game ball passage detection opening provided in the detecting means is closed by the closed movable part, so that the closed movable part and the detection means There is no space between the game balls. As a result, it is possible to advantageously avoid the presence of a game ball that has not yet passed through the game ball passage detection opening in the special winning opening device after the movable portion is closed.

  Therefore, in the present invention, the number of game balls detected by the detection means can be set to a preset number.

  Further, in the present invention, the fixed portion and the movable portion cooperate to form a guide surface that receives the game ball flowing down the game area and guides it to the game ball passage detection opening. It is possible to reduce the size of the movable part by securing a large part for receiving the game ball by the fixed part. Thereby, it is possible to reduce the probability that the game ball flowing down the game area contacts the movable part when the movable part is closed. As a result, it is possible to make it difficult to bite the game ball when the movable part is closed.

  Furthermore, in the present invention, since the game balls are arranged outside the big prize opening device, when the design of the big prize opening device is changed, it is attached to the game board provided with the fixing portion. By exchanging only the part, it becomes possible to divert the movable part, its drive mechanism, etc. to the big prize opening device after the design change.

  In addition, in the present invention, the game balls are arranged outside the special prize opening device, and a space in which the game balls can be positioned is formed between the movable part that is closed and the detection means. Since this is not done, the time required to enter a large number of game balls in the big prize opening device is longer than that in the conventional big prize opening device. Thereby, it becomes difficult to become a target of fraud. As a result, fraud can be advantageously prevented.

  In the present invention, “closing the game ball passage detection opening with the movable part in the closed state” means not only the state in which the movable part in the closed state is superimposed on the detection means but also the movable in the closed state. This includes a state in which a gap smaller than the diameter of the game ball is formed between the part and the detection means.

  Further, in the present invention, a guidance collision surface is formed for changing the rolling direction of the game ball that has rolled on the inclined surface of the fixed portion toward the game ball passage detection opening provided in the detection means. It is desirable. Thereby, changing the rolling direction of the game ball that has rolled on the inclined surface of the fixed portion can be advantageously realized with a simple structure.

  Hereinafter, in order to clarify the present invention more specifically, embodiments of the present invention will be described in detail with reference to the drawings.

  First, FIG.1 and FIG.2 shows the big prize opening device 10 of the pachinko machine as one embodiment of the present invention. In the following description, the vertical and horizontal directions are, in principle, the vertical and horizontal directions in FIG.

  The special prize opening device 10 includes a device main body 12, and the device main body 12 includes a first component member 14 and a second component member 16.

  The first component member 14 is made of a hard synthetic resin material such as ABS, and has a thick rectangular plate shape as a whole. Further, a through hole 18 (see FIGS. 6 and 7 described later) penetrating in the thickness direction is formed in an intermediate portion in the width direction (left and right direction in FIG. 2) of the first component member 14. Therefore, in the present embodiment, the depth dimension (dimension in the opening direction) of the through hole 18 is sufficiently smaller than the diameter of the game ball.

  On the other hand, the second component member 16 is formed of a hard synthetic resin material such as ABS, similarly to the first component member 14, and forward (toward the front side in the direction perpendicular to the paper surface of FIG. 2). A recessed chamber 20 (see FIGS. 6 and 7 described later) is provided. Further, a through hole 22 (see FIGS. 6 and 7 described later) penetrating in the thickness direction (vertical direction) is formed in the bottom wall of the concave chamber 20 provided in the second component member 16.

  The first component member 14 and the second component member 16 having such a structure have through holes formed in the first component member 14 in front of the recessed chamber 20 formed in the second component member 16. In a state where 22 is positioned, it is fixed with screws or the like, whereby the apparatus main body 12 is formed.

  Therefore, a detection switch 24 constituted by a conventionally known proximity switch is arranged between the first component member 14 and the second component member 16, and particularly in the present embodiment, the first component The rear direction of the through hole 18 formed in the member 14 and in front of the entrance of the concave chamber 20 formed in the second component member 16 is substantially the same direction as the opening direction of the through hole 18 and the concave chamber 20. A detection opening 26 as a game ball passage detection opening provided in the detection switch 24 is positioned so as to open. Further, the size of the detection opening 26 of the detection switch 24 is set to a size that allows one game ball to pass.

  As a method for arranging the detection switch 24, for example, a part where the detection switch 24 is placed and positioned in the first component member 14 is provided, and the detection switch 24 is positioned in that part. A method of sandwiching the detection switch 24 between the first component member 14 and the second component member 16 is advantageously employed.

  Further, a mounting plate member 28 is provided in front of the apparatus body 12 thus formed, that is, on the first component member 14 side. The mounting plate member 28 is made of a hard synthetic resin material such as ABS, and has a longitudinal flat plate shape as a whole. Further, an opening window 30 penetrating in the plate thickness direction is formed in an intermediate portion in the width direction (left and right direction in FIG. 2) of the mounting plate member 28.

  The first structural member 14 is fixed to the back side of the mounting plate member 28 with screws or the like so as to cover the opening window 30 formed in the mounting plate member 28 from the back side. A mounting plate member 28 is fixedly provided in front of the head.

  Further, a ball receiving wall 32 as a fixed portion is integrally formed on the front surface of the mounting plate member 28. The ball receiving wall 32 has a vertical wall portion 34 extending in the vertical direction (vertical direction in FIG. 2) of the mounting plate member 28 and an inclined surface 36 that descends diagonally downward to the right from the lower end of the vertical wall portion 34. An inclined wall portion 38 is provided. In the present embodiment, the downstream end of the inclined wall portion 38 is positioned on the outer side (left side) in the width direction of the through hole 18 with the mounting plate member 28 provided in front of the apparatus body 12 as described above. It has been.

  Furthermore, in the present embodiment, a door-like member 40 as a movable portion is disposed on the downstream end side of the inclined wall portion 38. The door-shaped member 40 is formed of a hard synthetic resin material such as ABS, and has a rectangular flat plate shape as a whole.

  Therefore, the door-like member 40 of the present embodiment has a protruding wall 42 that protrudes to one side in the plate thickness direction of the door-like member 40 at the intermediate portion in the width direction (left-right direction in FIG. 2) (see FIG. 3 described later). Is formed as an integral structure. In the door-like member 40 of this embodiment, the width direction one end side (the right end side in FIG. 2) is more than the width direction other end side (the left end side in FIG. 2) than the portion where the protruding wall 42 is provided. The dimension in the height direction (vertical direction in FIG. 2) is reduced. Further, the protruding wall 42 of the present embodiment has an arcuate curved surface at the protruding end surface, and has a substantially fan shape in a side view.

  Further, support shafts 44 and 46 (see FIG. 3 described later) projecting outward in the width direction are provided at both ends in the width direction of one end (lower end) in the height direction of the door-shaped member 40. Furthermore, the door-like member 40 has a protruding piece 48 (see FIG. 3 to be described later) that protrudes in substantially the same direction as the protruding wall 42 in the vicinity of the support shaft 46 provided on one end side (right side) in the width direction. Reference) is provided. And the groove 50 (refer FIG. 5 mentioned later) extended in the width direction of the door-shaped member 40 is formed in the protrusion end of this protrusion piece 48. As shown in FIG. In the present embodiment, the heights of both side walls 52 and 54 (see FIG. 5 described later) of the groove 50 are different, and the door member 40 is positioned on the other end side (upper end side) in the height direction. The side wall 52 is higher than the side wall 54 located on the lower end side.

  In the door-shaped member 40 having such a structure, the support shafts 44 and 46 are fitted into recesses (not shown) formed in the back surface and the inner peripheral surface of the opening window 30 in the mounting plate member 28. In the inserted state, the back surface side of the mounting plate member 28 in the recess is covered with the first component member 14, so that it can be attached to the front of the first component member 14 while being rotatable about one axis. It is supposed to be. And the part located in the width direction other end side rather than the protrusion wall 42 in the door-shaped member 40 in the state attached in front of the 1st component 14 in this way, ie, a height dimension, is enlarged. The part which exists is in the position which can cover the through-hole 18 formed in the 1st structural member 14. FIG. Further, the protruding wall 42 provided on the door-like member 40 is positioned outward in the width direction of the through hole 18. In the first component member 14, insertion holes 56 and 58 (see FIGS. 6 and 7 to be described later) are formed at positions corresponding to the positions where the protruding walls 42 and the protruding pieces 48 are formed. The door-like member 40 is allowed to rotate in a direction to cover the through hole 18 formed in the first component member 14.

  Further, a solenoid 60 as a drive source is attached to the back side of the apparatus main body 12, that is, the second component member 16 side via an attachment member 62. Then, the driving force of the solenoid 60 is transmitted to the door-shaped member 40 via the driving force transmitting member 64, so that the door-shaped member 40 rotates about one axis.

  As shown in FIG. 3, the driving force transmission member 64 includes a first driving rod 66 and a second driving rod 68, and is made of a hard synthetic resin material such as ABS. In the first and second drive rods 66 and 68, one end in the axial direction of the first drive rod 66 and an intermediate portion in the axial direction of the second drive rod 68 are connected by a connecting portion 70. In this state, the first drive rod 66 and the second drive rod 68 have axial axes extending in the axial direction parallel to each other. Further, an operation protrusion 72 protruding outward in the axial direction is provided at the other axial end of the first drive rod 66. Furthermore, a projecting portion 74 projecting outward in the direction perpendicular to the axis is provided at one axial end of the second drive rod 68. A locking portion 76 that protrudes outward in the axial direction of the second driving rod 68 is provided at the tip of the protruding portion 74, and the locking portion 76 has a shaft of the second driving rod 68. A locking groove (not shown) extending in the direction is formed.

  The driving force transmission member 64 having such a structure is coupled to the plunger 80 by accommodating the tip of the plunger 80 of the solenoid 60 in a locking groove (not shown) formed in the locking portion 76. It has become so. Further, the operation protrusion 72 of the driving force transmission member 64 has a side wall 52 having a larger height dimension in the groove 50 than the groove 50 formed in the protruding piece 48 provided on the door-like member 40. Is accommodated in a state of being positioned above. The driving force transmission member 64 is supported by a support piece 82 provided on the mounting member 62 at an axially intermediate portion of the second driving rod 68, so that the driving force transmitting member 64 is rotated around the central axis of the second driving rod 68. Can be rotated.

  The big prize opening device 10 having such a structure is attached to the game board 84 as shown in FIG. Specifically, the mounting plate member 28 fixed to the apparatus main body 12 in a state where the apparatus main body 12 is inserted and disposed in an attachment hole (not shown) formed in the game board 86 constituting the game board 84. The game board 86 can be attached to the game board 86 by being overlaid on the surface of the game board 86 and fixing an appropriate portion of the outer peripheral edge with screws or pins (not shown).

  The game board 84 is provided with a liquid crystal display device 90, a start winning device 92, a large number of game nails 94 and the like in addition to the special prize opening device 10, and the special prize opening device 10 and the liquid crystal display device 90 are provided. The start winning device 92, a large number of game nails 94, and the like are positioned in a game area 98 formed by being surrounded by a rail set 96 protruding from the surface of the game board 86.

  In addition, the game board 84 provided with such a grand prize opening device 10 and the like is adapted to be attached to the inner frame of the pachinko machine, and in this state, the special prize opening device 10 and the like are positioned. The game area 98 can be visually recognized from the outside through a transparent plate held by a front door arranged so as to cover the game board 84.

  Then, the game ball launched toward the game area 98 when the player rotates the operation lever assembled so as to be rotatable with respect to the operation handle projecting from the middle frame is moved to the game area 98. After reaching, the game area 98 flows down.

  In this case, the special prize opening device 10 provided in the game area 98 is normally in a state where the solenoid 60 is not energized. In this state, as shown in FIG. 3, the operation protrusion 72 is accommodated in the concave groove 50. Accordingly, as shown in FIGS. 1 and 2, the detection opening of the detection switch 24 in which the door-like member 40 is positioned behind the through hole 18 formed in the first component member 14. 26 is closed. As a result, when the solenoid 60 is not energized, the door-like member 40 prevents the game ball from entering the big prize opening device 10.

  Therefore, after the game ball flowing down the game area 98 collides with the inclined wall portion 38 of the ball receiving wall 32 provided on the mounting plate member 28, it rolls on the inclined surface 36 of the inclined wall portion 38, Even if the door-like member 40 has moved, it will drop downward from the downstream end of the inclined wall portion 38 and will not pass through the detection opening 26 of the detection switch 24. .

  On the other hand, when a game ball flowing down the game area 98 enters the start winning device 92, the liquid crystal display device 90 starts to display a plurality of symbols, and after a predetermined time has elapsed, the liquid crystal display device 90 has a plurality of symbols. Is stopped and displayed in a predetermined symbol combination, the jackpot gaming state starts. In this embodiment, energization of the solenoid 60 is started when the gaming state becomes a big hit gaming state. In the present embodiment, when energization to the solenoid 60 is started, energization to the solenoid 60 is continued until a predetermined number of game balls are detected by the detection switch 24 or until a predetermined time elapses. In addition, the energization of the solenoid 60 is repeated a predetermined number of times. As is clear from this, in the present embodiment, the gaming state becomes a jackpot gaming state, that is, the gaming state is changed from the normal gaming state to the jackpot gaming state in the control circuit that controls the operation of the pachinko machine. The control circuit that controls the operation of the pachinko machine determines that the control is performed and that the predetermined number of game balls are not detected by the detection switch 24 or that the energization time of the solenoid 60 has not passed the predetermined time. On the other hand, a condition for energizing the solenoid 60 is set, while a predetermined number of game balls are detected by the detection switch 24, or a condition for stopping energization to the solenoid 60 when the energizing time elapses a predetermined time. Is set, and the opening / closing operation condition of the door-shaped member 40 is determined by the energization condition and energization stop condition for the solenoid 60. It has been made.

  Therefore, in the special prize opening device 10 having the above-described structure, when the solenoid 60 is energized, the plunger 80 is retracted. As a result, the driving force transmitting member 64 is rotated around the central axis of the second driving rod 68 so that the operation projection 72 pushes one side wall 52 (upper side wall 52) of the concave groove 50 upward. It has become. As a result, the door-shaped member 40 is rotated around the support shafts 44 and 46, and the door-shaped member 40 is tilted forward as shown in FIG. As shown in FIGS. 6 and 7, the detection opening 26 of the detection switch 24 is opened. That is, in a state where the solenoid 60 is energized, the game ball is allowed to pass through the detection opening 26 of the detection switch 24, and the game ball passes through the detection opening 26 of the detection switch 24. By doing so, the passage of the game ball is detected. The rotation of the door-shaped member 40 in the opening direction is restricted by the operation projection 72 of the driving force transmission member 64 coming into contact with the protruding end surface of the other side wall 54 of the groove 50. Here, the amount of rotation of the door-like member 40 in the opening direction is approximately 90 degrees from the viewpoint of receiving the game ball flowing down the game area 98 and from the viewpoint of guiding the game ball to the detection opening 26. In particular, in the present embodiment, the angle is 84 degrees.

  When the detection opening 26 of the detection switch 24 is opened as described above, the game ball flowing down the game area 98 collides with the ball receiving wall 32 and rolls on the inclined surface 36 of the inclined wall portion 38. Then, after colliding with the wall surface 100 of the protruding wall 42 provided on the door-like member 40, the upper surface 102 of the door-like member 40 (the surface on which the protruding wall 42 protrudes) rolls to detect the detection switch 24. It passes through the detection opening 26. Thereafter, the game ball detected by the detection switch 24 is discharged to the back side of the game board 84 through the through hole 22 formed in the bottom wall of the concave chamber 20.

  As is clear from the above description, in this embodiment, the guide surface is constituted by the upper surface 102 of the door-shaped member 40 that is in the open state. In the present embodiment, the guide surface is constituted by the inclined surface 36 of the inclined wall portion 38 of the ball receiving wall 32 and the upper surface 102 (guide surface) of the door-like member 40 in the open state. That is, the guide surface is formed by the cooperation of the ball receiving wall 32 and the door-like member 40. In the present embodiment, the attachment plate member 28 constitutes an attachment portion to the game board 84. Furthermore, in the present embodiment, a guide collision surface is constituted by the wall surface 100 of the protruding wall 42. Furthermore, in this embodiment, the solenoid 60 and the driving force transmission member 64 constitute a driving mechanism.

  In the special prize opening device 10 having the structure as described above, the game balls flowing down the game area 98 are aligned by rolling on the inclined surface 36 of the inclined wall portion 38 of the ball receiving wall 32. It has become. Further, the game ball guided to the detection opening 26 of the detection switch 24 by the upper surface 102 of the door-like member 40 passes through the through hole 18 formed in the first component member 14 and immediately after the detection switch 24. It passes through the detection opening 26. Accordingly, after a predetermined number of game balls are detected by the detection switch 24 and the door-like member 40 is closed, the game switch is detected by the detection switch 24, that is, the detection switch 24 in the apparatus main body 12. It is possible to advantageously avoid the presence of a game ball that has not been detected by.

  In addition, since the portion of the door-shaped member 40 that is located closer to the ball receiving wall 32 than the protruding wall 42 is sized so as to cover the detection opening 26 of the detection switch 24, the door-shaped member 40. During the closing operation, the probability that the game ball contacts the door-like member 40 is reduced. Thereby, it is possible to advantageously avoid that the game ball is sandwiched between the door-shaped member 40 and the mounting plate member 28.

  Particularly in the case of this embodiment, an inclined wall portion 38 whose downstream end is the same height as the door-like member 40 in the open state of the door-like member 40 is located outside the other end in the width direction of the door-like member 40. Therefore, even if the game ball is sandwiched between the door-shaped member 40 and the mounting plate member 28, the game ball can move not only above the door-shaped member 40 but also to the left. It has become. As a result, it is possible to advantageously realize that the game ball is caught.

  Furthermore, since the game balls are arranged outside the special prize opening device 10, when the design of the ball receiving wall 32 is to be changed, the mounting plate member 28 provided with the ball receiving wall 32 is provided. Therefore, it is possible to easily change the design of the special winning opening apparatus 10.

  In particular, in the present embodiment, since the mounting plate member 28 is formed separately from the apparatus main body 12, the design change of the special prize opening apparatus 10 can be further facilitated.

  In addition, the through hole 18 has a depth dimension sufficiently shorter than the diameter of the game ball, and the door-like member 40 is superposed on the first component member 14 during the closing operation. Since the detection opening 26 of the detection switch 24 is sized so that one game ball can pass therethrough, only one game ball can be entered at a time. As a result, it is possible to advantageously prevent an illegal act of causing a large number of game balls to enter the grand prize opening device 10 at once.

  In the present embodiment, the game ball that has rolled on the inclined surface 36 of the inclined wall portion 38 of the ball receiving wall 32 collides with the wall surface 106 of the protruding wall 42 provided on the door-like member 40, and then the detection switch. Since it rolls toward the 24 detection openings 26, it is possible to advantageously realize the guidance of the game balls to the detection openings 26 with a simple structure.

  Furthermore, in the present embodiment, since the guiding surfaces 36 and 102 for aligning the game balls are formed on the outside of the big prize opening device 10, the big prize opening device as compared with the conventional big prize opening device. Thus, the height dimension of 10 can be reduced.

  In particular, in the present embodiment, since the detection switch 24 is set up sideways, it is possible to further reduce the size in the height direction of the big prize opening device 10.

  As mentioned above, although one Embodiment of this invention was explained in full detail, this is an illustration to the last, Comprising: This invention is not limited at all by the specific description in this Embodiment.

  For example, as shown in FIG. 8, ball receiving walls 32, 32 may be provided on both sides in the width direction (left-right direction in FIG. 8) of the detection opening 26 of the detection switch 24. In the aspect shown in FIG. 8, it is desirable that the upper surface 102 (guide surface) of the door-like member 40 during the opening operation is an inclined surface that goes down toward the detection opening 26 of the detection switch 24. Thereby, guiding the game ball to the detection opening 26 of the detection switch 24 can be advantageously realized. Further, in the embodiment shown in FIG. 8, the inclination angle of the inclined surface 36 formed on the right inclined wall portion 38 is made larger than the inclination angle of the inclined surface 36 formed on the left inclined wall portion 38. Thus, even when the game ball descending the left inclined surface 36 has excessively passed the upper surface 102 of the door-like member 40 located in front of the through hole 18, the right inclined surface It is advantageous to guide the game ball to the detection opening 26 because it will come down to the upper surface 102 of the door-like member 40 before or after it has climbed 36. Can be done. In addition, the inclination angle of the inclined surfaces 36 and 36 does not necessarily need to differ between right and left inclined wall parts 38 and 38 like the aspect shown by FIG.

  Further, when the ball receiving walls 32, 32 are provided on both sides in the width direction of the detection opening 26 of the detection switch 24, as shown in FIG. 9, it extends downward from the downstream ends of the inclined wall portions 38, 38. Second vertical wall portions 104 and 104 are provided, and a guide collision surface is configured by each of the wall surfaces 106 and 106 positioned opposite to each other in the second vertical wall portions 104 and 104. Also good.

  For ease of understanding, in FIGS. 8 and 9, members and parts having the same structure as in the above embodiment are denoted by the same reference numerals as in the above embodiment.

  Further, instead of providing the protruding wall 42 on the door-like member 40, a protruding wall may be provided on the transparent plate, and the guiding collision surface may be constituted by the wall surface of the protruding wall.

  In addition, although not listed one by one, the present invention can be carried out in a mode to which various changes, modifications, improvements and the like are added based on the knowledge of those skilled in the art. It goes without saying that all are included in the scope of the present invention without departing from the spirit of the present invention.

The perspective view which shows the special winning opening apparatus as one Embodiment of this invention. The front view of the same prize winning device. The perspective view for demonstrating the drive mechanism of the door-shaped member employ | adopted as the same prize opening apparatus. The front view which shows the attachment state to the game board of the same prize opening device. The perspective view for demonstrating the operating state of a drive mechanism. The perspective view which shows the big prize opening apparatus in the open operation state of a door-shaped member. The front view which shows the special winning opening apparatus in the open operation state of a door-shaped member. Explanatory drawing which shows another aspect of the fixing | fixed part employable in this invention. Explanatory drawing which shows another aspect of the fixing | fixed part employable in this invention.

Explanation of symbols

10: Grand prize opening device, 24: Detection switch, 26: Detection opening, 28: Mounting plate member, 32: Ball receiving wall, 36: Inclined surface, 40: Door-shaped member, 60: Solenoid, 64: Driving force Transmission member, 84: Game board, 90: Liquid crystal display device, 92: Start winning device, 98: Game area, 102: Upper surface

Claims (2)

When a plurality of symbols for which variable display is started based on a winning to a start winning device for a game ball flowing down the game area formed on the surface of the game board is stopped and displayed in a predetermined symbol combination In the big prize opening device of the pachinko machine that opens and closes under the gaming state that begins,
A movable part that is opened and closed by a drive mechanism to form a guide surface for guiding a game ball in an open state, and closes a game ball passage detection opening provided in a detection means that detects passage of the game ball in a closed state When,
A fixed portion projecting in a fixed state on the mounting portion to the game board and having an inclined surface inclined toward the movable portion, and the movable portion is opened. The pachinko machine is characterized in that a guide surface for receiving a game ball flowing down the game area and guiding it to the game ball passage detection opening is formed in cooperation with the movable portion and the fixed portion. Prize opening device.   The large pachinko machine according to claim 1, wherein a guide collision surface is formed for changing a rolling direction of a game ball that has rolled on the inclined surface of the fixed portion toward the game ball passage detection opening. Prize opening device.

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