JP5000143B2 - Medal selector with fraud prevention sensor - Google Patents

Description

  The present invention relates to a medal selector with a fraud prevention sensor, and more particularly to a medal selector with a fraud prevention sensor used in a device that uses medals, coins or coins, such as a so-called pachislot machine.

  The medal selector is used by being installed inside the medal slot 102 in a gaming machine 100 such as a pachislot whose outline is shown in FIG. This medal selector selects whether a medal inserted into a device such as a pachislot machine is a regular medal or a fake medal, accepts a regular medal, counts the number of the medal, and returns the fake medal from the return port 104. In addition, it is a device that similarly returns medals introduced at that time as a prohibited state in which medal acceptance is prohibited under specific conditions. For example, in the pachislot, the specific condition for setting the medal acceptance prohibition state is when the reel is rotating or when the count of the reserved medals (credits) reaches a specified number.

  As a medal detection means for counting the number of received sheets, a plurality of detectors (switches and photosensors) arranged in the medal advancing direction are arranged in the vicinity of the most downstream receiving section (mouth), and a medal passing there What is detected is well known.

  By the way, among players, there are those who unfairly play a game by cheating or illegally obtain a medal payout.

  There is a method called thread hanging as one of fraudulent acts. This is a method in which a gaming machine accepts a medal by inserting a medal suspended in a thread into the medal selector and repeating the reciprocation of the medal at the detector position. It is misrecognized.

  As described above, the purpose of arranging a plurality of detectors is to prevent such illegal acts. That is, when a plurality of detectors are arranged in the medal advancing direction, the detection order of the detectors is reversed when pulling back the sling medal, and this is used to discover fraud. Conventional techniques for preventing fraud using a plurality of detectors are described in Patent Document 1 and Patent Document 2.

  In Patent Document 1, since the detector is arranged including the center in the height direction of the medal passage, when a plurality of continuously inserted medals pass in contact with each other, this is recognized as one medal. As a result, only a smaller number than the actual number received is counted.

  On the other hand, in Patent Document 2, a detector is arranged at a height where the vicinity of the top of the medal passes, so that the number of passing medals can be correctly recognized even if consecutively inserted medals pass in contact with each other. Has been.

  Since the medals are circular, there is always a gap between the top and bottom sides even if the medals are in contact with each other, so if a detector is placed on the top or bottom side, a plurality of medals can be in contact with each other. It can be recognized as.

  Although the type of detector is not specified in Patent Document 1, it is considered that a non-contact type photosensor is used in consideration of the extremely high medal passing frequency.

  However, in recent years, there has been known an act of using a thin plate-like unauthorized device generally called “Kureman-kun” having a plurality of light emitting elements such as LEDs at the tip.

  Specifically, a thin plate member is inserted so that the positions of the light emitting elements correspond to the light receiving portions of a plurality of photosensors in the medal selector, and the same order as the medal actually passes by an external operation. By blinking the light emitting element, the gaming machine is misrecognized as having received a medal.

  When using this fraudulent device, the light-emitting element blinks at high speed to maximize the pending medal count (credit) of the pachislot machine, and then press the return button 106 to perform payout. A large number of medals can be acquired.

Japanese Patent Publication No. 8-21109 Japanese Patent No. 3441803

  However, depending on the fraud prevention means employed in the conventional medal selectors disclosed in Patent Document 1 and Patent Document 2, if a fraudulent device such as “Kureman” is used, There was a problem that fraud could not be found.

  In addition, the medal selector selects a mechanistic mechanism or medal for selecting whether the medal inserted into the gaming machine is a regular medal or a fake medal and returning the fake medal upstream of the medal detection means for counting the number of received sheets. It is naturally advantageous in terms of certainty in sorting and the like that a wide space can be used as the sorting mechanism and the like.

  However, if a plurality of photosensors are arranged in the medal advancing direction as in the prior art, a space for that is required, so the sorting mechanism or the like must be reduced or the medal selector itself must be increased. was there.

  Furthermore, in order to correctly recognize the number of passing sheets even if a plurality of photosensors are arranged in the medal advancing direction and a plurality of continuously inserted medals pass in contact with each other, a plurality of gaps between medals are required. It is necessary to detect (detect) the photosensors simultaneously (in other words, the optical axes of multiple photosensors must fit in the gaps between passing medals simultaneously) In order to reduce the interval, there is a limit due to the size relationship between the light emitting element and the light receiving element of the photosensor. Therefore, in a gaming machine that handles small-diameter medals as regular medals, the gap between medals becomes small, so that it cannot be put to practical use, or the optical axis of the photosensor must be arranged at a height very close to the top or bottom of the medals. There is a problem that the certainty of detection is lowered.

  The present invention was made to solve the above-mentioned conventional problems, and when using a thin plate-like fraudulent device provided with a plurality of light emitting elements such as LEDs, the fraud can be reliably detected, It is an object of the present invention to provide a medal selector with a fraud prevention sensor that can reliably detect even a small-diameter medal without reducing the selection mechanism or the like or enlarging the medal selector itself.

The present invention relates to an acceptance prohibition means capable of switching between an acceptable state and an acceptance prohibition state with respect to an inserted medal, a selection means for selecting a regular medal and a fake medal and returning a fake medal, and the acceptance And a count sensor unit that detects a medal passing through a medal path downstream of the prohibiting unit and the sorting unit and outputs a detection signal corresponding to the number of received sheets, and guides the counted medal to the downstream receiving unit. In the medal selector, the count sensor unit includes: a light emitting element disposed on one outer side of the medal path; and a plurality of light receiving elements disposed on the other outer side capable of receiving light emitted from the light emitting element. together provided with the light receiving elements of said plurality of, shifted positions from each other in a direction perpendicular to the medal passage, to the extent that the light receiving portion of each light receiving element is not blocked, overlap in a direction along the medal passage By being disposed, it is obtained by solving the above problems.

In the present invention, the medal path through which the optical axis connecting the light emitting part of the light emitting element and the light receiving part of each light receiving element passes through the side wall constituting the medal path on the side where the plurality of light receiving elements are disposed. A light receiving window having a continuous shape elongated in the direction may be formed.

  According to the present invention, it is possible to place a plurality of light receiving elements in the medal path close to each other, and since the light receiving window is continuous, a thin plate-like unauthorized device provided with a plurality of light emitting elements such as LEDs is used. In this case, the fraud can be detected with certainty, and a small diameter medal can be reliably detected without reducing the selection mechanism or the like or enlarging the medal selector itself.

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

  1 is a perspective view from above of the front side showing the whole medal selector of one embodiment according to the present invention, FIG. 2 is a front view thereof, FIG. 3 is a perspective view from below of the back side, and FIG. 4 is a guide cover. FIG. 5 is a cross-sectional view taken along the line A-A in FIG. 2 and shows a sorting / acceptance prohibiting mechanism section to be described later.

  The medal selector of the present embodiment is attached to the inside of the gaming machine 100 such as a pachislot shown in FIG. 21 via a base frame indicated by reference numeral 1 in the figure, downstream of the medal slot 102 provided in the housing. It is done. The attachment is performed in such a posture that the front shown in FIGS. 1 and 2 can be seen from the front side when the panel of the gaming machine 100 is opened and maintenance such as cleaning is performed.

  A guide cover denoted by reference numeral 2 is attached to the base frame 1 so as to be rotatable obliquely upward about a right upper fulcrum shaft 3, and the guide cover 2 is attached to the fulcrum shaft 3. 4 is biased toward the base frame 1 side. The base frame 1 and the guide cover 2 are manufactured by resin molding.

  When the base frame 1 and the guide cover 2 are closed, a part of the inner surface facing each other comes into contact with each other, so that a gap slightly wider than the thickness of the medal 5 is maintained and a passage through which the medal 5 passes is formed. (See FIG. 5).

  At the upper left part of the medal selector, a slot 6 which is an entrance of a medal formed by the base frame 1 and the guide cover 2 is disposed, and an arrow extending downward from the slot 6 constituting the medal path is shown. A vertical passage 7 and an inclined passage 8 indicated by an obliquely downward arrow extending in the right direction at the lower end thereof are formed.

  In the figure, reference numeral 24 denotes a foreign matter insertion detection lever provided in the vertical passage 7 downstream of the insertion port 6, and the detection lever 24 has its intermediate portion rotatable to the base frame 1 by a fulcrum portion 25. It is pivotally supported. The one end 24a normally protrudes toward the guide cover 2 due to its own weight, and the one end 24a enters the recess 26 of the guide cover 2 so that the vertical passage 7 is completely shielded. .

  As described above, when the one end 24 a of the foreign matter insertion detection lever 24 completely shields the vertical passage 7, the other end 24 b formed in a thin plate shape on the back side is a transmission provided on the back surface of the base frame 1. It stops at a position slightly away from the optical axis of the foreign matter insertion detection sensor 27 which is a type photosensor.

  A medal rolling surface is formed at the lower end of the inclined passage 8, and this medal rolling surface is constituted by a movable guide 11 described later and an inclined rail portion 9 fixed to the base frame 1 on the downstream side thereof.

  A corner guide 10 fixed to the base frame 1 is disposed at the lower end of the vertical path 7, and an arc-shaped medal rolling surface 10 a is formed on the upper surface of the corner guide 10 at the intersection of the vertical path 7 and the inclined path 8. Has been.

  In this medal selector, the regular medal inserted from the insertion slot 6 rolls on the rolling surface of the inclined passage 8 and is supplied to the downstream receiving portion 16, and the fake medal and the reception prohibition medal will be described later. It is discharged to the return passage 23.

  The movable guide 11 is disposed above the return passage 23 and constitutes a part of the rolling surface as described above. However, the movable guide 11 is directly installed at the start position of the inclined passage 8 in FIG. As schematically shown by extracting the main part of the sorting / acceptance prohibiting mechanism portion, the guide surface 11a that supports the lower end of the medal 5 constitutes this rolling surface.

  The medal selector according to the present embodiment includes the movable guide 11 and an upper guide 13 disposed so as to be in contact with the upper side surface of the regular medal 5 whose lower end is supported by the guide surface 11a and rolling. A lower guide 14 disposed below the guide 13 and capable of contacting a lower side surface of the medal 5 on the same side as the one side surface; and disposed at an intermediate height between the lower guide 14 and the upper guide 13; An intermediate guide 15 that can abut against the side surface of the medal 5 opposite to the one side surface, and a pressing member that urges the upper end portion of the medal 5 that rolls in a state in which it can abut against each guide in a direction to press against the upper guide 13. (Pressing means) 17 and the guide surface 11a of the movable guide 11 are received at a position where the height of the rolling surface is received, and from below the upper guide 13 shown in FIG. Up between prohibited positions An electromagnetic solenoid for moving and a (driving means) 21.

The medal selector will be described in detail. The movable guide 11 is provided between the downstream inclined rail portion 9 constituting the inclined passage 8 and the upstream corner guide 10 and has an L-shaped cross section as shown in FIG. Made of magnetic material. Then, Ri Contact so as to protrude from the opening 12 to its distal end is formed through along the inclined path 8 to the base frame 1 on the inner side of the inclined passage 8, the upper surface constitutes the guide surface 11a ing.

  The guide surface 11a of the movable guide 11 can be displaced up and down by driving the electromagnetic solenoid 21 as described above. When the guide surface 11a is raised, the guide surface (upper surface) 11a as shown in FIG. The space between the upper guide 13 and the lower end surface 13a is slightly smaller than the outer diameter of the regular medal, and when lowered, the distance between the guide surface 11a and the lower end surface 13a is designed to be slightly larger than the outer diameter of the regular medal. Has been.

  Further, the movable guide 11 is configured to rotate around a starting point 11b on the back side of the base frame 1, and is configured so that the amount of protrusion to the inclined passage 8 is reduced at the same time when the guide surface 11a is lowered. Normally, the guide surface 11a is rotated in the direction of lowering by the urging force of the tension spring 22. As shown in FIG. 5, the tension spring 22 is attached to a solenoid mounting metal plate having one end fixed to the base frame 1, and the other end is attached to an L-shaped upper end portion obliquely downward in the direction of the base frame 1. As described above, the movable guide 11 is pivoted about the starting point 11b, and an urging force in the direction of pulling down the guide surface 11a of the movable guide 11 is also applied.

  Therefore, even if there is a backlash due to a gap between the movable guide 11 and the starting point 11b, this backlash is urged in one direction. Therefore, even if the electromagnetic solenoid is repeatedly turned on and off, the guide surface of the movable guide The height of 11a can maintain reproducibility.

  When the electromagnetic solenoid 21 is excited and the guide surface 11a of the movable guide 11 is raised, the upstream end of the guide surface 11a in the inclined passage 8 substantially coincides with the end of the rolling surface 10a of the corner guide 10. The downstream end portion of the guide surface 11a substantially coincides with the starting end of the inclined rail portion 9. Therefore, as described above, a series of medal rolling surfaces are formed by the rolling surface 10 a and the guide surface 11 a and the inclined rail portion 9.

  The electromagnetic solenoid 21 will be described in detail. It is screwed to the back surface of the base frame 1 via a solenoid mounting sheet metal, and is disposed between the base frame 1 and the movable guide 11. The electromagnetic solenoid 21 receives the medal. When it is in a possible state, it is excited to attract the movable guide 11 and raise its guide surface 11a. FIG. 5 shows this state.

  In the present embodiment, since the base frame 1 is a resin molded product, a contact area is required for attaching the solenoid mounting plate to the base frame 1 in order to prevent the base frame 1 from being deformed by the heat of the electromagnetic solenoid 21. The heat dissipation effect is improved by minimizing the space between the two as much as possible.

  The upper guide 13 that supports the upper side of the medal 5 is integrated with the base frame 1, and the lower guide 14 that supports the lower side of the medal 5 is molded integrally with the base frame 1. ing. Although not shown in FIG. 6, the lower guide 14 is formed with a rib-like convex portion extending in the longitudinal direction so that the contact area with the medal 5 is minimized. However, the present invention is not limited to this and may be flat as shown in FIG.

  In addition, the intermediate guide 15 provided at a height position between the upper guide 13 and the lower guide 14 and facing the guides is integrally formed as a part of the guide cover 2. Yes.

  The medal receiving portion 16 located downstream of the inclined passage 8 is formed by an opening formed integrally with the base frame 1.

  The pressing member 17 has a height position between the lower guide 14 and the intermediate guide 15 in the vicinity of the start position of the inclined passage 8 as shown in the image of the planar relationship between the lower guide 14 and the intermediate guide 15 in FIG. And is rotatably supported by the base frame 1.

  The pressing member 17 can be projected and retracted through the opening 14a with respect to the medal support surface of the lower guide 14, and normally protrudes from the medal support surface of the lower guide 14 by the biasing force of a torsion coil spring (not shown). As shown in the figure, it is urged and pressed in the direction of the intermediate guide 15.

  In this embodiment, as shown in the image of the positional relationship with each guide in FIG. 6A, the lower part of the medal 5 in which the pressing member 17 is inserted (below the intermediate guide 15) is placed on the intermediate guide 15. Thus, the upper portion of the medal 5 is rotated in the reverse direction with the intermediate guide 15 as a fulcrum, and the side surface of the upper end portion is pressed against the upper guide 13.

  Further, a count sensor unit 18 is installed immediately before the receiving unit 16, and the sensor unit 18 has two light receiving elements 18b and 18c mounted on a substrate 18a as shown in an enlarged view in FIGS. And one light emitting element 18d are arranged on the upstream side of the receiving port 16 with an inclined passage (medal passage) 8 sandwiched between them, and the two light emitting portions 18g of the light emitting elements and the light receiving portions 18e and 18f of the light receiving elements are connected. The optical axes (light beams) 18h and 18j are at a height penetrating the inclined passage 8 closer to the top of the medal.

  The two light receiving elements 18b and 18c are arranged such that the light receiving portions 18e and 18f are spaced apart from each other in the medal traveling direction, and the moving direction of the medal is determined based on the light shielding time difference.

  In the present embodiment, one light receiving element 18c goes straight in the traveling direction of the medal 5 so that a part of the light receiving elements 18c overlaps appropriately in a range where the light emitted from the light receiving element 18d is not blocked, that is, in a range where the optical axis of the light receiving element 18c is not blocked. The positions of the light receiving element 18b and the light receiving element 18c are shifted from each other in the direction in which the medals travel, and the distance between the optical axes 18h and 18j in the medal advancing direction is shortened compared to the case where they are arranged in the same row.

  One light receiving element 18c employs a synchronous modulation type light modulation type photo IC, and is electrically connected so as to detect only the modulated pulse light emission from the light emitting element 18d.

  Reference numeral 28 in the figure denotes a light projection window formed by opening a base frame (side wall) 1 adjacent to the light emitting portion 18g so as not to block the two optical axes 18h and 18j. Similarly, it is a light receiving window formed by opening the base frame 1 adjacent to the portions 18e and 18f so as not to block the two optical axes 18h and 18j.

  Here, the light receiving window 29 is horizontally long in the direction connecting the light receiving portions 18e and 18f, that is, the medal traveling direction. When one of the LEDs of the unauthorized device is caused to emit light in the inclined passage 8, the light is emitted. Two light receiving elements receive light simultaneously.

  Further, a vertical wall 19 is disposed outside the medal contact surface 13 b of the upper guide 13 in the inclined passage 8 immediately before the count sensor unit 18.

  Further, a stopper 20 pivotally supported on the base frame 1 is installed downstream of the movable guide 11 immediately before the count sensor unit 18.

  The stopper 20 can be moved into and out of the inclined passage (medal passage) 8 by this rotation operation. When the guide surface 11a of the movable guide 11 is raised, the stopper 20 is retracted from the inclined passage 8 and is lowered. It protrudes into the inclined passage 8.

  A return passage 23 is formed below the movable guide 11 and is constituted by a sufficient space through which a medal provided between the base frame 1 and the cover guide 2 can pass as shown in FIG.

  In the medal selector having the above configuration, an operation when a regular medal is inserted in an acceptable state will be described below.

  The regular medal 5 inserted into the gaming machine enters the medal selector from the insertion slot 6 as shown in the image of FIG. 13 which is a front view excluding the guide cover 2 from FIG. The lever 24 is pushed open to drop the vertical passage 7 shown in FIG. 4, and the guide surface 11a and the inclined rail portion 9 reach the inclined passage 8 where the rolling surface is formed.

  When the insertion detection lever 24 is pushed open, the other end 24b of the detection lever 24 shields the optical axis of the foreign object insertion detection sensor 27 before it is slightly rotated to create a gap in the vertical passage 7. Detection signal is output. Thereafter, when the medal passes, the detection lever 24 returns to the original position, so that the detection signal is turned OFF, and the insertion of the medal is detected.

  As shown in FIG. 14, when the regular medal 5 is inserted into the sorting / acceptance prohibiting mechanism portion shown in FIG. 5, the medal 5 reaching the start position of the inclined passage 8 is placed in the middle by the action of the pressing member 17. Although a counterclockwise rotational force is applied with the contact portion with the guide 15 as a fulcrum, the guide surface 11 a of the movable guide 11 is raised by the excitation action of the electromagnetic solenoid 21.

  Accordingly, the distance between the guide surface 11a of the movable guide 11 and the lower end surface 13a of the upper guide 13 is smaller than the outer diameter of the medal 5 as in FIG. Continues to roll toward the downstream side while being supported by the contact surface 13b on the inner side of the upper guide 13.

  In addition, since a gap slightly larger than the thickness of the medal 5 is formed between the upper guide 13 and the intermediate guide 15, the medal 5 is slightly inclined, but the tip of the movable guide 11 is sufficient even in this state. The medal 5 protrudes from below to a position where it is supported by the guide surface 11a.

  After the medal 5 has passed the pressing range by the pressing member 17, the medal is surrounded by the four surfaces of the guide surface 11a, the upper guide 13, the lower guide 14, and the intermediate guide 15, so that the inclined passage 8 is not dropped. Continue rolling down the road.

  Thereafter, when the medal 5 passes the count sensor unit 18, detection signals are output from the light receiving elements 18b and 18c according to the passing state of the medal 5. A control unit (not shown) of the gaming machine counts up the number of received medals based on the detection signal.

  Immediately after the count sensor unit 18 counts up the number of received medals, the medal 5 passes through the receiving unit 16 and falls into a medal accommodating unit (not shown) of the gaming machine.

  By the way, in order to correctly count the number of medals received by the count sensor unit 18, even when two medals pass in contact with each other, as shown in FIG. If there is no time A during which both light receiving elements do not detect a medal, the passing direction of the medal cannot be recognized correctly.

  Accordingly, if the distance between the two optical axes 18h and 18j is wider than the gap between the two medals, as in the case where two light receiving elements are arranged in the same row, both of them are simultaneously shown in FIG. The signal output is such that there is no time for the output of the light receiving element to be turned off, and the medal passage direction cannot be determined, so that the number of received medals cannot be counted correctly. Such a problem is likely to occur when a gap between medals is small (for example, a medal selector that handles medals having a small diameter as regular medals).

  In this respect, in the medal selector of the present embodiment, the distance between the optical axes can be made very close, so that such a problem can be prevented.

  Next, an operation when a small-diameter fake medal is inserted in the acceptable state will be described.

  A small-diameter fake medal that has been thrown into the gaming machine also reaches the inclined passage 8 in the same manner as the regular medal. FIG. 15 shows a state where a small-diameter fake medal has reached the sorting / acceptance prohibiting mechanism portion of FIG.

  As shown in this figure, the medal 5 reaching the start position of the inclined passage 8 is rotated counterclockwise by the action of the pressing member 17 with the contact portion with the intermediate guide 15 as a fulcrum. At this time, the guide surface 11 a of the movable guide 11 is raised by the excitation action of the electromagnetic solenoid 21, but the diameter of the small-diameter false medal is the distance between the guide surface 11 a of the movable guide 11 and the lower end surface 13 a of the upper guide 13. Therefore, the side surface of the upper end portion of the medal 5 is not supported by the contact surface 13b of the upper guide 13, but rotates counterclockwise and falls down.

  In this way, the medal 5 slightly falls down, and the lower end portion of the medal 5 protrudes from the guide surface 11 a of the movable guide 11, so that it falls toward the return passage 23.

  In this case, the medals that have fallen into the return passage 23 are returned without passing through the count sensor unit 18, so the control unit of the gaming machine does not count up the number of received medals.

  In addition, when even a small-diameter medal is thrown in vigorously, since it has an inertial force that proceeds downstream along the inclined passage 8, the false medal that has begun to fall again is regained by moving toward the receiving portion 16 while falling. There is a concern that it will return to its original position and be taken into the gaming machine. However, since the upper guide 13 constituting the small-diameter medal sorting mechanism is provided in a sufficiently long section in the inclined passage 8, the false medal is in a sufficiently fallen state, so that the sorting mechanism as shown in FIG. Will come into contact with the vertical wall 19 provided at the end of the sword, and as a result, it will fall. Therefore, it is possible to reliably prevent the small diameter medal from being erroneously received by the gaming machine.

  Next, an operation when a regular medal is inserted in the acceptance prohibited state will be described.

  The regular medal thrown into the gaming machine similarly reaches the inclined passage 8. FIG. 16 shows a state where the regular medal has reached the sorting / acceptance prohibition mechanism portion of FIG. 5 in the acceptance prohibition state.

  As shown in the figure, the medal 5 reaching the start position of the inclined passage 8 is similarly rotated counterclockwise by the action of the pressing member 17 with the contact portion with the intermediate guide 15 as a fulcrum. At this time, since the electromagnetic solenoid 21 is not excited, the guide surface 11a of the movable guide 11 is lowered by the urging force of the tension spring 22 as shown in FIG.

  Accordingly, since the distance between the guide surface 11a of the movable guide 11 and the lower end surface 13a of the upper guide 13 is larger than the outer diameter of the regular medal 5, the upper end side surface of the medal 5 is not supported by the upper guide 13. Rotate counterclockwise and fall down. Since the lowering of the guide surface 11a is realized by the rotation of the movable guide 11 about the fulcrum 11b, the amount of projection of the guide surface 11a into the inclined passage 8 is reduced at the same time.

  When the medal 5 is slightly tilted, the lower end portion of the medal 5 protrudes from the guide surface 11a of the movable guide 11 and falls down toward the return passage 23. Since it is smaller than the acceptable state with the movement, the fall starts with a slight fall of the medal rather than when the small-diameter fake medal falls in the acceptable state.

  Also in this case, the medal 5 that has fallen into the return passage 23 is returned without passing through the count sensor unit 18, so that the control unit of the gaming machine does not count up the number of received medals.

  Next, an operation for preventing an illegal act by a thread hanging medal will be described.

  First, when performing a fraud by hanging a regular medal on a thread or the like, the thread is loosened after the thread hanging medal is inserted, the medal is passed through the count sensor unit 18, and the medal is returned by pulling the thread. However, when the medal is returned, the detection order of the light emitting elements 18b and 18c is reversed from the original as shown in FIG.

  As a method for preventing fraud from being detected as described above, a plate-like member having a height about half that of a regular medal is inserted to pass the light-receiving portions 18e and 18f, and when returning, the plate-like member is moved to the inclined passage. However, in order to perform such an operation, a member that suspends the plate-like member is to some extent such as a wire or a plastic plate. It will be necessary to have the rigidity of.

  However, while the wire or plastic plate is inserted into the medal selector, the foreign matter insertion detection lever 24 remains pushed open, so that the output signal from the foreign matter insertion detection sensor 27 is output longer than usual. Can detect fraud.

  Next, the action to prevent fraud by “Kureman” will be described.

  First, even when fraud is performed by “Kureman-kun”, the thin plate member is inserted into the medal selector, so that the fraud can be detected by the foreign matter insertion detection sensor 27 as described above.

  Assuming a case where fraud detection by the foreign matter insertion detection sensor 27 cannot be performed for some reason, when “Kureman” 30 is inserted into the inclined passage 8 of FIG. 10 and the two LEDs 31 are opposed to the light receiving element, As shown in FIG.

  Even in this case, since the light receiving elements 18b and 18c of the count sensor unit 18 are arranged very close to each other, the two LEDs 31a and 31b for erroneously recognizing them are not arranged very close to each other. Don't be.

  Even if “Kureman-kun” 30 that can cope with this using a small LED 31 can be manufactured, one of the LEDs 31 of “Kureman-kun” 30 is caused to emit light in the inclined passage 8 and the light-receiving portions 18e and 18f. If either one is received, the distance between the light receiving portions 18e and 18f is very close, so that the light reaches the other light receiving portion through the horizontally long light receiving window 29 as shown in FIG.

  As a result, unlike normal medals passing through, detection signals are simultaneously output from both light receiving elements 18b and 18c, so that fraud can be detected.

  Further, as described above, since the synchronous modulation type light modulation type photo IC is used for the light receiving element 18c, the light receiving element 18c is not detected unless it is an accurate synchronizing light. It is technically difficult to cause the LED 31 of an external device to be erroneously recognized.

  According to the embodiment described above in detail, the following effects can be obtained.

  Since the distance between the optical axes 18h and 18j intersecting the medal path can be made shorter than the width of the light receiving elements 18b and 18c, the reverse flow of the medal 5 can be reliably detected, and the medal selector can be downsized and the sorting function can be maintained. Even when small-diameter medals pass continuously, the number of passing medals can be correctly recognized, and fraud by “Kureman-kun” can be prevented.

  That is, since the distance between the optical axes of the two light receiving elements 18b and 18c can be reduced, fraud due to “Kureman-kun” can be prevented.

  In addition, since an elongated light receiving window 29 through which the optical axes of the two light receiving elements 18b and 18c pass is provided, a plurality of light receiving elements simultaneously output detection signals even if one of the “Kureman-kun” LEDs emits light. Therefore, it is possible to reliably prevent fraud by “Kureman”.

  Furthermore, since a synchronous modulation type light modulation type photo IC is used for one of the light receiving elements 18c, fraud due to “Kureman” can be prevented more reliably.

  The specific configuration of the medal selector according to the present invention is not limited to that shown in the embodiment.

  For example, the case where the light modulation type IC is adopted for only one of the light receiving elements 18c is shown, but conversely, it may be adopted for the light receiving element 18b.

  Further, the present invention can be applied to any medal selector as long as it is provided with medal acceptance prohibiting means and medal sorting means.

The front side perspective view showing the whole medal selector of one embodiment concerning the present invention. Front view of the entire medal selector of this embodiment Rear side perspective view of the whole medal selector of this embodiment Front perspective view of the entire medal selector of the present embodiment with the guide cover removed 2 is a cross-sectional view taken along the line AA in FIG. The schematic diagram which extracts and shows the characteristic principal part of the selection and reception prohibition mechanism part of this embodiment Schematic diagram showing the relationship between the pressing member and the inclined passage etc. Enlarged perspective view showing the downstream end of the inclined passage Enlarged perspective view showing the count sensor section extracted Sectional drawing which shows typically the relationship between a count sensor part and an inclined passage Time chart showing signal output pattern by light receiving element of this embodiment Time chart showing signal output pattern by conventional light receiving element The front view which shows the relationship between the inside of the medal selector of this embodiment, and the medal which passes there Sectional drawing which shows a mode that a regular medal passes the selection / reception prohibition mechanism part shown in the said FIG. Sectional drawing which shows a mode that a small diameter false medal is sorted and returned by the sorting / acceptance prohibition mechanism section shown in FIG. Sectional drawing which shows a mode that a regular medal is returned by the selection / acceptance prohibition mechanism part shown in the said FIG. 5 in an acceptance prohibition state Sectional view schematically showing the use of unauthorized equipment in the count sensor Schematic perspective view showing appearance of medal gaming machine

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Base frame 2 ... Guide cover 3 ... Supporting shaft 4 ... Coil spring 5 ... Medal 6 ... Insertion port 7 ... Vertical passage 8 ... Inclination passage 9 ... Inclination rail part 10 ... Corner guide 11 ... Movable guide 11a ... Guide surface 12 ... Opening 13 ... Upper guide 13a ... Lower end surface 14 ... Lower guide 15 ... Intermediate guide 16 ... Receiving part 17 ... Pushing member 18 ... Count sensor part 18b, 18c ... Light receiving element 18d ... Light emitting element 18h, 18j ... Optical axis 19 ... Vertical axis 19 Wall 20 ... Stopper 21 ... Electromagnetic solenoid 29 ... Light receiving window 30 ... "Kureman-kun" (illegal device)
31 ... LED

Claims (2)

Acceptance prohibiting means capable of switching between an acceptable state and an acceptance prohibited state with respect to an inserted medal, a selecting means for selecting a regular medal and a fake medal and returning a fake medal, the acceptance prohibiting means and the selecting A medal selector that detects a medal passing through a medal passage downstream of the means and outputs a detection signal corresponding to the number of received coins, and guides the counted medal to a downstream receiving unit;
The count sensor unit includes a light emitting element disposed on one outer side of the medal path, and a plurality of light receiving elements disposed on the other outer side capable of receiving light emitted from the light emitting element. ,
The plurality of light receiving elements are arranged such that their positions are shifted from each other in a direction perpendicular to the medal path, and the light receiving portions of the respective light receiving elements are arranged so as to overlap in the direction along the medal path as long as they are not shielded from light. Medal selector with anti-fraud sensor. On the side wall constituting the medal path on the side where the plurality of light receiving elements are arranged, a continuous long and narrow line in the direction of the medal path through which the optical axis connecting the light emitting part of the light emitting element and the light receiving part of each light receiving element passes. The medal selector with a tamper-proof sensor according to claim 1, wherein a light receiving window having a shape is formed.

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