JP2014013478A - Coin selector and fraudulence preventing device for coin selector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coin selector capable of surely preventing a fraudulent action, and achieving high speed processing.SOLUTION: A coin selector comprises: a coin passage extended along a downward axial line in which an input coin rolls; a coin selection section configured to determine the authenticity of the coin in accordance with at least the diameter of the coin, and to reject a false coin from the coin passage in a process that the coin rolls in the coin passage; a coin detection device configured to detect the coin at the downstream of the coin passage with respect to the coin selection section; and an impeller arranged at the upstream of the coin passage with respect to the coin detection device, and configured to rotate around a rotation axial line extended in a direction orthogonal to the axial line of the coin passage on the lateral side of the coin passage, and formed with at least three wings which can protrude to the coin passage according as the impeller rotates, in which the wings are disposed such that the coins are held one by one between the two front and rear wings of the impeller in the coin passage.

Description

  The present invention relates to a coin selector that discriminates the authenticity of an inserted coin and selects a false coin and a genuine coin, and particularly relates to a coin selector that is preferably used in a gaming machine such as a pachislot machine. Furthermore, the present invention relates to a coin selector that prevents fraud with respect to a coin detection device for authentic coin detection. More specifically, the present invention relates to a coin selector that can prevent fraud with respect to a coin detection device and can process at high speed and reliably in response to continuous coin insertion.

  The present invention also relates to an anti-fraud device in a coin selector that determines whether a coin that has been inserted is true or false, and selects a false coin from an authentic coin, and in particular, prevents an anti-fraud of a coin selector that is preferably used in a gaming machine such as a pachislot machine. Relates to the device. Furthermore, the present invention relates to a fraud prevention device for a coin selector that prevents fraud with respect to a coin detection device for authentic coin detection without reducing the processing speed of the coin selector.

  The coin selector according to the present invention can be used for a coin-type game machine, a vending machine, etc. in addition to a pachislot machine. In this specification, a coin is a general term for coins, medals, tokens, and the like.

  As a first prior art, the passage of the coin is detected based on a signal from a coin sensor arranged downstream of a true / false discrimination means formed along a coin path along which the coin moves according to the application of the present applicant. In the coin selector, there is known a coin selector characterized in that shutter means that allows passage of the coin in the rolling direction but does not allow passage in the reverse direction is disposed in the coin passage downstream of the coin sensor. (For example, refer to Patent Document 1).

  In the first prior art, even if an attempt is made to insert a fraudulent instrument from the outlet of the coin selector, the insertion direction is opposite to the coin rolling direction, so the shutter means prevents the insertion. Therefore, it is possible to prevent an unauthorized act of inserting an unauthorized tool from the outlet. Moreover, it is difficult to insert a fraudulent instrument from the insertion slot by offsetting the coin detection path for detecting coins with respect to the coin path.

  As a second prior art, in a slot machine comprising a medal passage for guiding medals inserted from a medal insertion slot and a medal selector provided in the middle of the medal passage to detect passage of medals, the medal selector A damming position that can enter the medal passage on the upstream side and dam the medal, a damming member that is displaced between a passing position that retreats from the medal passage and passes the medal, and the damming It is arranged to project into the medal passage upstream from the member, and when the inserted medal comes into contact with this projecting part, one medal previously dammed by the damming member passes. So that the inserted medal is newly dammed after the damming member is displaced to the passing position. A damming member driving piece for displacing the material to the damming position, a medal presence / absence detecting means for detecting the presence / absence of a medal dammed by the damming member, and a damming member for detecting the position of the damming member When the position detecting means and the damming member position detecting means detect the passing position continuously for a predetermined time, or the damming member position detecting means detects the damming position, There is known a slot machine including error detection means for outputting an error signal when a medal presence / absence detection means detects no medal (see, for example, Patent Document 2).

  In the second prior art, the medal inserted from the medal slot is once dammed by the damming member located at the damming position and detected by the medal presence / absence detecting means. When the next medal is inserted, the damming member is moved from the damming position to the passing position by the damming member driving piece, and the dammed member moves downstream, and then the damming member is moved to the passing position. To the damming position. As a result, the next medal inserted is blocked by the blocking member in the same manner as the previously inserted medal.

  When the fraudulent instrument is continuously inserted from the medal slot, the state where the damming member is located at the passing position is continuously detected for a predetermined time by the damming member position detecting means, and the error detecting means outputs an error signal. Further, when the fraudulent instrument is inserted and pulled out, there is no medal that is dammed even though the damming member is in the damming position, and the error detection means outputs an error signal. Therefore, it is found from the error signal that an illegal act has been performed, which can be used to prevent the illegal act.

  As a third prior art, a medal selector that forms a medal passage through which an inserted medal passes and detects the passage of a regular medal, a medal detection means that detects the passage of the medal, and a circumferential surface of the medal that passes A side wall forming member that forms one side wall of the medal passage, and a side wall portion that forms the other side wall of the medal passage that a peripheral surface of the medal passes through, and the other side wall passes through And a movable member rotatably provided so as to press the medal to be pressed against the one side wall, wherein the medal detection means has a diameter equal to or smaller than the diameter of the regular medal from the one side wall portion. The detection position is set at a position spaced beyond the diameter of the small irregular medal, and the movable member is a medal between the one side wall and the other side wall against the pressing of the other side wall. There is known a medal selector including a separate portion that advances to a passage restriction position that is a position between a passing medal and a succeeding medal by the rotation of the movable member generated by passing. (For example, see Patent Document 3). The medal selector includes a rotation detection unit that detects the rotation of the movable member, and a determination unit that performs error determination based on the detection result of the medal detection unit and the detection result of the rotation detection unit. Yes.

  In the third prior art, even when medals are continuously inserted, the separator part advances to the passage restriction position by the passing medals, and the passage of subsequent medals is restricted. As a result, a predetermined interval or more is ensured between the passing medal and the succeeding medal, the occurrence of medal clogging is prevented, and the erroneous detection of a small diameter irregular medal is reduced. Further, the rotation detection means detects the entry of a medal inserted regardless of whether it is regular or irregular, and the medal detection means detects only the regular medal. When the passage of the regular medal is detected by the medal detection unit and the entry of the medal is not detected by the rotation detection unit, the determination unit sets an error and the error process is executed because the probability of fraud is high. Thereby, it can be used for prevention of fraud.

  As a fourth prior art, a pair of walls arranged so that a medal rolls in a gap between the facing wall surfaces, and a rolling motion in which the medal rolls are substantially parallel to the surface direction of the wall surface. It is pivotally mounted on one wall side of the pair of walls so as to be swingable about an axis substantially perpendicular to the moving direction, and the both end portions alternately approach the wall. A seesaw-type rocking member for displacing both ends, and projecting toward the wall surface facing each other above or below the center of the rolling medal at both ends of the rocking member, Provided with a pair of protrusions whose diameter is larger than the diameter of the medal, and the rocking member is displaced so as to approach the wall surface facing the downstream protrusion part and the wall surface facing the upstream protrusion part Displaced away from the upstream protrusion The first position where the pitch from the wall to the wall surface is larger than the thickness of the medal, both the protrusions are horizontal along the rolling direction, and the pitch is from the both protrusions to the wall surface facing each other. The second position that is smaller than the thickness, and the downstream projecting portion is displaced so as to be separated from the wall surface facing, and the upstream projecting portion is displaced so as to approach the wall surface facing the downstream position. The swing member is arranged to swing between a third position where the pitch from the protrusion to the wall surface is larger than the thickness of the medal, and the swing member is a medal on which the protrusion on the downstream side rolls. There is known a medal insertion device that swings from the third position to the first position via the second position when pressed by (for example, Patent Document 4). In the medal insertion device, a biasing member that biases toward the wall surface facing the protruding portion on the downstream side is provided.

  In the fourth prior art, when the fraudulent instrument is inserted from the medal slot, the swinging member swings and the fraudulent instrument is sandwiched between the protruding portion and the wall surface. Therefore, the fraudulent instrument cannot reach the medal detection unit, and fraud is prevented.

  As a fifth prior art, in a medal identification machine that counts at least the number of inserted medals of a medal gaming machine that can start a game by inserting a medal, a medal passage through which the inserted medal passes downstream due to its own weight A medal abutting member provided in the medal path so as to be retractable outside the medal path only when receiving a medal passing force in the medal path, and a protruding and retracting of the medal abutting member A medal passage detector for detecting the number of medals, and a medal number detector provided downstream of the medal abutting member in the medal passage for counting the number of medals one by one. Whether the combination state of the detected state of the medal abutting member and the medal number detection state detected by the medal number detector applies to a predetermined condition Depending on, proper medal is characterized by being configured to determine whether or not made, medals validator medal game machine is known (e.g., Patent Document 5).

  In the fifth prior art, the medal passage detector detects that the medal abutting member has retreated out of the medal passage due to the passing force of the medal passing through the medal passage, and the detection signal by the medal passage detector and the medal number detector Based on the medal number detection signal detected by the above, it is determined whether or not cheating is being performed.

JP 2008-117072 (FIGS. 1, 3, 8, and 9, paragraph numbers 0026, 0027, 0032, 0033) JP 2009-125405 A (FIGS. 3, 7, and 9, paragraph numbers 0017 to 0023, paragraph numbers 0034 to 0041) Japanese Unexamined Patent Publication No. 2011-98112 (FIGS. 5 to 11, FIG. 15, FIG. 16, paragraph numbers 0063 to 0092, paragraph numbers 0103 to 0110) Japanese Unexamined Patent Publication No. 2006-14840 (FIGS. 3 to 6, paragraph numbers 0020 to 0026) JP 2002-65951 A (FIGS. 14 to 21, paragraph numbers 0055 to 0070)

  Recently, the tricks of fraud against coin selectors have become more and more sophisticated, and strengthening of fraud prevention measures has been demanded. In particular, there is a demand for a more reliable measure against an illegal act of inserting a fraudulent instrument and accessing the coin sensor.

  In the first prior art, when a fraudulent instrument made of a flexible plate-like member is used, there is a possibility that the tip of the fraudulent instrument inserted from the insertion port may reach the coin detection path. There is a drawback that it cannot be sufficiently prevented.

  In the second prior art, it is necessary to add two sensors for detecting the presence / absence of medals and for detecting the position of the damming member, which increases the cost.

  In the third prior art, it is necessary to add two sensors for rotation detection and medal detection to the first unit separately from the medal detection sensor provided in the second unit. Similarly, there is a drawback that the cost increases.

  In the fourth prior art, the medal moves while pushing up the protruding portion of the swing member against the urging force of the urging member, so that the moving medal is decelerated and the processing capacity is lowered. is there.

  In the fifth prior art, the medal abutting member is biased by a spring so as to retreat out of the medal passage only when receiving a medal passing force. Therefore, similarly to the fourth prior art, the medal is decelerated when it passes over the medal abutting member, and there is a problem that the processing capability is reduced.

  In general, coins may be continuously inserted into the coin selector, and even in this case, the coin selector is required to execute a predetermined process reliably and at high speed. For example, in the coin selector for pachislot machines, coins are ejected from the exit when the pachislot body is in a coin acceptance permitted state, and coins are excluded from the coin passage and not ejected from the exit when in a coin acceptance refusal state. However, if the removal of coins is delayed during the transition from the coin acceptance permitted state to the coin acceptance refusal state, so-called “smearing” may occur, in which the coins to be removed are accepted by the pachislot body. . The occurrence of this stagnation reduces the reliability of the coin selector.

The present invention has been made based on a new idea in view of the above situation, and an object of the present invention is to provide a coin selector that can reliably prevent fraud with respect to a coin detection device.
Another object of the present invention is to provide a coin selector that cannot easily reach the coin detection device even if a fraudulent instrument is inserted.
Still another object of the present invention is to provide a highly reliable coin selector that reliably prevents occurrence of stagnation.
Still another object of the present invention is to provide a coin selector that can reliably prevent fraud and can perform high-speed processing.
Still another object of the present invention is to provide a coin selector that can reliably prevent fraud while suppressing costs.
Still another object of the present invention is to provide a fraud prevention device for a coin selector that can reliably prevent fraud with respect to a coin detection device.
Still another object of the present invention is to provide a coin selector fraud prevention device that cannot easily reach the coin detection device even if a fraudulent instrument is inserted.
It is still another object of the present invention to provide a fraud prevention device for a coin selector that can prevent fraud without reducing the processing speed of the coin selector.
Still another object of the present invention is to provide a fraud prevention device for a coin selector that can reliably prevent fraud while suppressing costs.
Other objects of the present invention which are not specified here will be apparent from the following description and the accompanying drawings.

  In order to achieve this object, a coin selector and a coin selector fraud prevention device according to the present invention are configured as follows.

  (1) A coin selector according to the present invention includes a coin path extending along a downward axis along which an inserted coin rolls, and at least a diameter of the coin in the process of rolling the coin along the coin path. A coin sorting unit that discriminates true / false and removes false coins from the coin passage; a coin detection device that detects the coin downstream of the coin passage with respect to the coin sorting unit; and It is arranged on the upstream side of the passage, and can rotate around a rotation axis extending in a direction orthogonal to the axis of the coin passage on the side of the coin passage, and can appear and disappear in the coin passage with rotation. An impeller having at least three blades, and the coins are sandwiched one by one between the two blades before and after the impeller in the coin path. A coin selector in which the blade is disposed.

  In the coin selector of the present invention, the coin inserted into the coin selector rolls along the coin path extending along the downward axis, and in the process of rolling, the authenticity is determined by at least the coin diameter in the coin sorting section. As a result, the false coin is removed from the coin passage. The coin determined to be a genuine coin by the coin sorting unit is detected by the coin detection device downstream of the coin path with respect to the coin sorting unit.

  On the upstream side of the coin passage with respect to the coin detection device, an impeller that is rotatable around a rotation axis extending in a direction orthogonal to the axis of the coin passage is disposed on the side of the coin passage. The impeller has at least three blades that can appear and disappear in the coin passage, and the blades are arranged so that coins are sandwiched one by one between the two blades before and after the impeller in the coin passage.

  The coin determined to be a genuine coin by the coin sorting unit contacts (or collides) with a blade protruding into the coin passage, and a force toward the downstream side of the coin passage acts on the blade. In other words, the coin moving in the coin passage pushes the blade protruding into the coin passage. Thereby, the blade | wing of an impeller rotates in the direction which goes to the downstream of a coin channel | path, and it moves, a coin being pinched | interposed one by one between two blades which the impeller front and back. When the blade located in the forward direction of the coin moves out of the coin passage along with the rotation of the impeller, the acting force on the coin blade disappears and the impeller stops, and the coin moves to the downstream of the coin passage and moves to the coin. After being detected by the detection device, it is discharged from the exit of the coin selector.

  When rejecting acceptance of a coin determined as a genuine coin by the coin sorting unit, the rotation of the impeller is forcibly stopped with one of the blades crossing the coin passage. Thereby, the movement of the coin in the coin passage is blocked by the blade protruding into the coin passage. In other words, the blades of the impeller function as a regulating body that regulates coin movement.

  When, for example, a plate-shaped fraudulent instrument is inserted from the entrance of the coin selector (in other words, a coin slot), the tip of the fraudulent instrument pushes the blade protruding into the coin passage, and the impeller rotates. When the fraudulent instrument is further pushed in this state, the blade located behind in the rotation direction with respect to the blade pushed by the tip of the fraudulent instrument protrudes into the coin passage, and the rear blade impels the fraudulent instrument from the inner surface of the coin passage. Pressed against. This makes it impossible to push the fraudulent instrument further. Therefore, even if a fraudulent instrument is inserted, the coin detection device cannot be reached, and fraud to the coin detection device can be reliably prevented.

  On the other hand, when a plurality of coins are continuously inserted into the coin selector, the preceding coin and the succeeding coin are separated through the blades in the coin path, so that the following coins move as the impeller stops. Regulated by blades. Therefore, the occurrence of stagnation is reliably prevented and the reliability is increased.

  Moreover, since it is pinched | interposed between two blades which back and forth in a coin path, each of the plurality of coins rolling in the coin path exerts a rotational force on the impeller, and the rotation of the impeller is maintained. The moving speed of the coin is increased as compared with those using the biasing member as in the prior art and the fifth prior art, and high-speed processing is possible.

  Furthermore, since fraud is prevented without adding a detector, costs are reduced.

  In addition, the impeller in this invention means what has the blade | wing extended radially toward the outward of a rotating shaft line.

  (2) In the coin selector according to the present invention, the portion of the coin passage that protrudes into the coin passage immediately after the blade is bent in an arc shape in a line of sight along the rotation axis and protrudes into the coin passage It is preferable that an acute angle is formed with respect to the axis, and a portion of the blade that protrudes into the coin passage immediately before retreating from the coin passage is formed to be substantially parallel to the axis of the coin passage. When the portion of the blade that protrudes into the coin passage immediately after protruding into the coin passage forms an acute angle with respect to the axis of the coin passage, the tip of the blade is relatively large with respect to the axis of the coin passage by curving the blade in an arc shape. Enter the coin passage at an angle (in other words, an angle closer to vertical). As a result, a relatively large rotational force can be exerted on the impeller immediately after the coin contacts (or collides) with the blade. Since the portion of the blade that protrudes from the coin passage immediately before retreating from the coin passage is substantially parallel to the axis of the coin passage, the drag exerted on the coin by the blade disappears at this point. Therefore, the influence of the impeller on the coin moving speed can be reduced. Furthermore, when coins move in a row in the coin passage, immediately after the blades have left the coin passage, the blades are pushed by the subsequent coins. In other words, before the rotation of the impeller by the preceding coin stops, the rotational force by the subsequent coin acts on the impeller. Therefore, the rotational speed of the impeller is increased, and the processing speed of the coin selector can be further increased.

  (3) In the coin selector of the present invention, it is preferable that a one-way clutch that allows rotation in a direction in which the coin moves downstream but prevents rotation in the reverse direction is attached to the impeller. In the case of a fraudulent act using a coin bound with a tenji thread or the like, the coin can reach the coin detection device. However, when the coin is pulled out, the movement of the coin in the reverse direction is blocked by the blade of the impeller so that the coin cannot be pulled out, and such an illegal act can be surely prevented.

  (4) In the coin selector of the present invention, the blade has a V-shaped notch that is tapered from the tip toward the rotation axis, and the notch passes through the center of the coin, and It is preferable to face the peripheral surface of the coin on both sides of a diameter line parallel to the axis of the coin passage. A gap is formed between one surface of the preceding coin and one surface of the succeeding coin in the coin passage so as to increase upward and downward with respect to the diameter line. By forming the V-shaped notch, the tip portion of the blade enters the gap, and the preceding coin and the succeeding coin can be more reliably separated. Further, since the coin enters the notch of the blade and the peripheral surface of the coin comes into contact with the notch and pushes the blade, the interval between the preceding coin and the succeeding coin is reduced, and the processing speed is reduced. Can be further enhanced.

  (5) In the coin selector of the present invention, it is preferable to include a rotation detecting device that detects the rotation of the impeller. As a result, when a coin is detected by the coin detection device even though the rotation of the impeller is not detected, it can be determined that there is a possibility that the coin detection device has been cheated. In other words, since it is possible to detect fraud with respect to the coin detection device, it is possible to further enhance the effect of preventing fraud. In this case, since only one detector needs to be added, an increase in cost can be suppressed as compared with the second and third conventional techniques.

  (6) In the coin selector of the present invention, the rotation detection device according to the above (5) includes a detector, a rotating body that rotates together with the impeller, and has an operation region and a non-operation region of the detector; It is preferable that the working region or the non-working region is formed corresponding to each of the blades. In this case, the output signal of the detector changes corresponding to each rotational position of the blade. In other words, the output signal of the detector changes corresponding to each of the coins pushing the blades protruding in the coin passage. In other words, the coin passing through the impeller in the coin passage is detected by the detector. Therefore, since the coin detection by the detector of the rotation detection device and the coin detection by the coin detection device correspond one-to-one, fraud with respect to the coin detection device can be detected more reliably.

  (7) In the coin selector of the present invention, it is preferable that the impeller is provided with a rotation stop device that stops rotation in a direction in which the coin moves downstream of the coin passage. As a result, the rotation of the impeller is forcibly stopped, and coins can be prevented from being discharged from the exit of the coin selector.

  (8) In the coin selector according to the present invention, the rotation stopping device according to (7) includes a stopper that can be projected and retracted in a rotation path of the blade, and the protruding stopper prevents the movement of the blade. The rotation of the car is preferably stopped. Thereby, an impeller can be stopped reliably with a comparatively simple structure, and realization at low cost is possible.

  (9) In the coin selector of the present invention, the stopper of the above (8) has a swinging lever rotatably supported on a support shaft, and a locking body provided at a tip of the swinging lever, By the rotation of the swing lever, the locking body protrudes into the blade rotation path to prevent the blade movement, and the locking body retreats from the blade rotation path to move the blade. It is preferable that it can be displaced to a position that allows In this case, when the locking body comes into contact with (or collides with) the blade that is pushed and rotated by the movement of the coin, a force in the moving direction of the blade acts on the locking body. Since the locking body is provided at the tip of the swinging lever that is rotatably supported, the swinging direction is such that the moving direction of the blade and the rotation direction of the swinging lever when the locking body protrudes are the same. If the moving lever is provided, the swinging lever rotates in the direction in which the locking body protrudes when the locking body and the rotating blade come into contact (or collide). In other words, the contact (or collision) between the locking body and the rotating blade promotes the protrusion of the locking body to the rotation path of the blade. Therefore, the time for which the restricting body is displaced from the position where the rotation of the impeller is permitted to the position where the rotation of the impeller is stopped is shortened, and the response speed as a stopper is increased. Therefore, the occurrence of stagnation can be more effectively prevented.

  (10) The coin selector according to the present invention preferably includes a coin dropping device that drops the coin from the coin passage in conjunction with the rotation stop of the impeller. As a result, the coins that are prevented from moving by the blades protruding into the coin passage can be quickly removed from the coin passage.

  (11) In the coin selector of the present invention, the coin dropping device according to the above (10) has a first posture in which the coin can roll by rotating about a support shaft substantially parallel to the axis of the coin passage. A movable guide rail whose posture can be changed to a second posture in which the coin falls due to its own weight, and a holding body that holds the movable guide rail in the first posture, and in conjunction with the rotation stop of the impeller It is preferable that the holding of the movable guide rail by the holding body is released. As a result, a coin dropping device that interlocks with the stopper can be realized with a relatively simple configuration, and costs can be reduced.

  (12) A fraud prevention device for a coin selector according to the present invention has a coin passage extending along a downward axis along which a coin inserted from an entrance rolls, and the coin rolls in the coin passage. The coin selection unit determines at least the diameter of the coin and eliminates the false coins. The coin detection unit detects the coin downstream of the coin passage with respect to the coin selection unit, and the detected coin is An apparatus for preventing fraud in a coin selector discharged from an outlet, wherein the device can rotate around a rotation axis extending in a direction orthogonal to the axis of the coin path on the side of the coin path, and with rotation An impeller having at least three blades capable of appearing and retracting in the coin passage; and two pieces of front and rear of the impeller in the coin passage The coin between the roots are arranged the blades to be sandwiched one by one, a fraud prevention apparatus of a coin selector.

  In the fraud prevention device for a coin selector according to the present invention, a coin rolling in the coin passage contacts (or collides) with a blade protruding into the coin passage, and a force directed toward the downstream side of the coin passage acts on the blade. In other words, the coin moving in the coin passage pushes the blade protruding into the coin passage. As a result, the impeller rotates in a direction in which the blades are directed toward the downstream side of the coin passage, and moves while the coins are sandwiched one by one between the two front and rear blades of the impeller. When the blade located in the forward direction of the coin moves out of the coin passage with the rotation of the impeller, the acting force on the blade exerted by the coin is lost and the impeller stops.

  When, for example, a plate-shaped fraudulent instrument is inserted into the coin path of the coin selector, the tip of the fraudulent instrument pushes the blade protruding into the coin path, and the impeller rotates. When the fraudulent instrument is further pushed in this state, the blade located behind in the rotation direction with respect to the blade pushed by the tip of the fraudulent instrument protrudes into the coin passage, and the rear blade impels the fraudulent instrument from the inner surface of the coin passage. Pressed against. This makes it impossible to push the fraudulent instrument further. Accordingly, by arranging the fraud prevention device between the coin selector entrance and the coin detection device or between the coin selector exit and the coin detection device, the coin detection device can be inserted even if the fraudulent instrument is inserted. It is impossible to reach the coin detection device, and it is possible to reliably prevent fraud against the coin detection device.

  Moreover, since it is pinched | interposed between two blades which back and forth in a coin path, each of the plurality of coins rolling in the coin path exerts a rotational force on the impeller, and the rotation of the impeller is maintained. The moving speed of the coin is higher than that using a biasing member as in the prior art, and high-speed processing is possible. In other words, fraud can be prevented without reducing the processing speed of the coin selector.

  The impeller can be arranged on the upstream side or the downstream side of the coin passage with respect to the coin detection device, but is preferably arranged on the upstream side. This is because it is easier for a fraudster to insert a fraudulent instrument from the entrance of the coin selector, and it is more important to prevent this.

  (13) In the fraud prevention device for a coin selector according to the present invention, the portion of the blade that protrudes into the coin passage immediately after the blade is curved in an arc shape in a line of sight along the rotation axis and protrudes into the coin passage. The tangent forms an acute angle with respect to the axis of the coin passage, and the tangent of the portion of the blade that protrudes into the coin passage immediately before the blade retreats from the coin passage is substantially parallel to the axis of the coin passage. It is preferable to be formed as described above. When the portion of the blade that protrudes into the coin passage immediately after protruding into the coin passage forms an acute angle with respect to the axis of the coin passage, the tip of the blade is relatively large with respect to the axis of the coin passage by curving the blade in an arc shape. Enter the coin passage at an angle (in other words, an angle closer to vertical). As a result, a relatively large rotational force can be exerted on the impeller immediately after the coin contacts (or collides) with the blade. Since the portion of the blade that protrudes from the coin passage immediately before retreating from the coin passage is substantially parallel to the axis of the coin passage, the drag exerted on the coin by the blade disappears at this point. Therefore, the influence of the impeller on the coin moving speed can be reduced. Furthermore, when coins move in a row in the coin passage, immediately after the blades have left the coin passage, the blades are pushed by the subsequent coins. In other words, before the rotation of the impeller by the preceding coin stops, the rotational force by the subsequent coin acts on the impeller. Therefore, the rotational speed of the impeller is increased, and the processing speed of the coin selector can be further increased.

  (14) In the apparatus for preventing fraud of a coin selector according to the present invention, it is preferable that a one-way clutch that allows rotation in a direction in which the coin moves downstream but prevents rotation in the reverse direction is attached to the impeller. . In the case of a fraudulent act using a coin bound with a tenji thread or the like, the coin can reach the coin detection device. However, when the coin is pulled out, the movement of the coin in the reverse direction is blocked by the blade of the impeller so that the coin cannot be pulled out.

  (15) In the fraud prevention device for a coin selector according to the present invention, the blade has a V-shaped notch that is tapered from the tip toward the rotation axis, and the notch passes through the center of the coin. And it is preferable to face the peripheral surface of the coin on both sides of a diameter line parallel to the axis of the coin passage. A gap is formed between one surface of the preceding coin and one surface of the succeeding coin in the coin passage so as to increase upward and downward with respect to the diameter line. By forming the V-shaped notch, the tip portion of the blade enters the gap, and the preceding coin and the succeeding coin can be more reliably separated. Further, since the coin enters the notch of the blade and the peripheral surface of the coin comes into contact with the notch and pushes the blade, the interval between the preceding coin and the succeeding coin is reduced, and the processing speed is reduced. Can be further enhanced.

  (16) In the coin selector fraud prevention device of the present invention, it is preferable that a rotation detection device for detecting the rotation of the impeller is provided. As a result, when a coin is detected by the coin detection device even though the rotation of the impeller is not detected, it can be determined that there is a possibility that the coin detection device has been cheated. In other words, since it is possible to detect fraud with respect to the coin detection device, it is possible to further enhance the effect of preventing fraud. In this case, since only one detector needs to be added, an increase in cost can be suppressed as compared with the second and third conventional techniques.

  (17) In the apparatus for preventing fraud of a coin selector of the present invention, the rotation detection device according to (16) rotates together with a detector and the impeller, and has an operation region and a non-operation region of the detector. It is preferable that the working region or the non-working region is formed corresponding to each of the blades. In this case, the output signal of the detector changes corresponding to each rotational position of the blade. In other words, the output signal of the detector changes corresponding to each of the coins pushing the blades protruding in the coin passage. In other words, the coin passing through the impeller in the coin passage is detected by the detector. Therefore, since the coin detection by the detector of the rotation detection device and the coin detection by the coin detection device correspond one-to-one, fraud with respect to the coin detection device can be detected more reliably.

In the coin selector of the present invention, (a) fraud to the coin detection device can be surely prevented, (b) the coin detection device cannot be easily reached even if the fraudulent instrument is inserted, and (c) occurrence of stagnation is ensured. It is possible to prevent and increase the reliability, (d) it is possible to reliably prevent fraud, and high-speed processing is possible, and (e) it is possible to reliably prevent fraud while suppressing costs.
In the fraud prevention device for a coin selector according to the present invention, (a) fraud with respect to the coin detection device can be reliably prevented, (b) the coin detection device cannot be easily reached even if a fraudulent instrument is inserted, (c) the coin selector Thus, it is possible to prevent fraud without reducing the processing speed, and (d) it is possible to reliably prevent fraud while suppressing costs.

It is a front perspective view which shows the coin selector of one Example of this invention. It is a front view of the coin selector of FIG. 1A is a left side view and FIG. 1B is a right side view of the coin selector of FIG. It is a rear view of the coin selector of FIG. It is a top view of the coin selector of FIG. It is a front view of the state which removed the opening-closing body and the cover member of the coin selector of FIG. It is a front view of the state which removed the cover member of the coin selector of FIG. FIG. 8 is a cross-sectional view taken along the line AA in FIG. 7 with the cover member of the coin selector in FIG. 1 removed. It is a rear view which shows the opening-closing body in the coin selector of FIG. It is a back perspective view of the state where the main part of the coin selector of Drawing 1 was removed. (A) which shows the impeller in the coin selector of FIG. 1 is a schematic perspective view, (B) is a schematic front view. 11A is a state for explaining the relationship between the blades of the impeller and the coin passage in FIG. 11 and FIG. 11B is a main portion showing a state immediately after the blades protrude from the coin passage. FIG. It is a schematic sectional drawing. FIGS. 2A and 2B show a rotation stop device and a coin dropping device in the coin collector of FIG. 1, in which FIG. It is sectional drawing along the BB line of FIG. FIGS. 2A and 2B show a posture holding mechanism of a coin dropping device in the coin selector of FIG. 1, in which FIG. (A) of the fraud prevention device in the coin selector of FIG. 1 is a one-way clutch, and (B) is a main part schematic perspective view showing a rotation detection device. 1A is a schematic cross-sectional view of an essential part showing a state in which a thread suspension preventing device in the coin selector of FIG. 1 is stationary, FIG. 1B is a state when a coin is passing, and FIG. It is a principal part schematic sectional drawing for demonstrating the operation | movement in the coin acceptance permission state of the coin selector of FIG. FIG. 19 is a main part schematic cross-sectional view for explaining the operation of the coin selector of FIG. It is a principal part schematic sectional drawing for demonstrating the operation | movement at the time of transfering from a coin acceptance permission state of the coin selector of FIG. 1 to a coin acceptance rejection state. FIG. 1A shows a state immediately after the insertion when the fraudulent instrument is inserted into the coin sector of FIG. 1, FIG. 1B shows a further inserted state, and FIG. 1C shows a main part sandwiched between impeller blades. It is a schematic sectional drawing. It is a wave form diagram which shows an example of the output signal of the rotation detection apparatus and coin detection apparatus at the time of normal in the coin selector of FIG. It is a wave form diagram which shows the other example of the output signal of the rotation detection apparatus at the time of normal in the coin selector of FIG. 1, and a coin detection apparatus. It is a wave form diagram which shows the output signal of the rotation detection apparatus at the time of abnormality in the coin selector of FIG. 1, and a coin detection apparatus.

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

  As shown in FIGS. 1 to 10, a coin selector 100 according to an embodiment of the present invention includes a main body 102 to which various parts constituting the coin selector 100 are attached, and an open / close supported so as to be pivotable with respect to the main body 102. Body 104, coin passage 106 formed between the main body 102 and the opening / closing body 104, and the coin C determined whether it is a fake coin by determining whether the coin C is true or false while the coin C rolls along the coin passage 106. A coin sorting unit 108 that removes the coin C from the coin passage 106, a reject device 110 that forcibly removes the coin C in the coin passage 106, and a coin that restricts the acceptance of the coin C that has been identified as a genuine coin by the coin sorting unit 108. Acceptance restricting device 112 and coin that is restricted from being accepted by coin acceptance restricting device 112 from coin path 106. A coin drop device 114, a coin detection device 116 that detects a coin C that has been moved downstream of the coin path 106 without being restricted by the coin acceptance restriction device 112, and a cover member 118 attached to the front side of the main body 102. An inlet 122 for receiving the coin C into the coin passage 106, an outlet 124 for discharging the coin C from the coin passage 106 toward the gaming machine, and a thread suspension preventing device 120 disposed in the vicinity of the outlet 124 in the coin passage 106. And a fraud prevention device 126 for preventing fraud with respect to the coin detection device by a fraudulent instrument.

(Body)
The main body 102 is formed in a substantially rectangular first guide wall 132, left and right ends of the first guide wall 132, and a left side wall 134 and a right side that protrude in directions perpendicular to the front and back surfaces of the first guide wall 132, respectively. A wall 136 is provided. The width of the main body 102 is 3.5 inches, which is a so-called defect standard size. The left side wall 134 and the right side wall 136 are formed with four protruding projections 142 projecting outward, and the coin selector 100 is secured by latching these projections 142 in a mounting groove (not shown) of the gaming machine. Can be attached to a gaming machine.

  The left side wall 134 and the right side wall 136 have upper end surfaces 134a, 136a and lower end surfaces 134b, 136b extending in the horizontal direction, respectively, and are suspended from the horizontal plane (see FIGS. 3A and 3B). ). The lower end of the first guide wall 132 retreats toward the back side of the main body 102 with respect to the upper end of the first guide wall 132, and the first guide wall 132 is inclined forward. In other words, the first guide wall 132 has a predetermined inclination angle with respect to a vertical plane perpendicular to the upper end surfaces 134a and 136a and the lower end surfaces 134b and 136b.

  On the surface side of the main body 102, a concave groove 138 is formed by the first guide wall 132, the left side wall 134, and the right side wall 136 (see FIG. 6). In the concave groove 138, the surface of the first guide wall 132 functions as a first coin guide surface 140 that guides one surface of the coin C. The first guide wall 132 is formed with a protrusion 145 that protrudes to the front side at the top (see FIG. 6). The lower end surface 145a of the protrusion 145 is curved obliquely downward to the right from the upper end of the first guide wall 132, and further extends linearly downward to the right and reaches the right wall 136. The protruding height of the protrusion 145 is set to a dimension slightly larger than the thickness of the coin C. The protrusion 145 is formed such that the distance between the lower end surface 145a and a guide rail 256 described later is slightly larger than the diameter of the coin C to be selected (that is, the genuine coin).

  A substantially rectangular recess 143 having a bottom surface 143a inclined corresponding to the first guide wall 132 is formed at the front end 134c of the left side wall 134 (see FIG. 3A). Below the right side wall 136, a vertically long rectangular outlet 124 for discharging the coin C is formed. The longitudinal direction of the outlet 124 is inclined corresponding to the first guide wall 132.

  The 1st guide wall 132 has the protrusion 149 which has the upper end surface 149a formed in the circular arc shape of the slanting right-lowering arrange | positioned at the lower right (refer FIG. 7). The upper end surface 149 a of the protrusion 149 functions as a guide rail 144. The guide rail 144 is arranged so as to be connected to a movable guide rail 402 described later, and has a function of guiding the coin C moving in the coin passage 106 to the outlet 124. In this embodiment, the guide rail 144 is formed integrally with the first guide wall 132, but the guide rail 144 formed separately may be attached to the first guide wall 132.

  On the back side of the main body 102, the first guide wall 132 has an outer shape in which a part of the truncated cone cut out is connected in a vertically symmetrical manner, and has a cover portion 146 that protrudes on the back side of the main body 102. (See FIGS. 4 and 8). A space corresponding to a rotation region (hereinafter referred to as an impeller rotation region) formed with rotation of the impeller 302 described later is formed inside the cover portion 146. The cover portion 146 has a function of covering the impeller 302 on the back side of the main body 102 and protecting the impeller 302. In this embodiment, the cover portion 146 is formed integrally with the first guide wall 132.

  The main body 102 is provided with a pair of support shafts 152 and 154 that rotatably support the opening / closing body 104. The support shafts 152 and 154 are disposed in the concave groove 138 on the axis L1 that is parallel to the first guide wall 132 and is inclined downwardly from the upper right portion of the main body 102 (see FIG. 6).

(Opening and closing body)
The opening / closing body 104 includes a second guide wall 202 and a third guide wall 203 that are arranged in parallel with the first guide wall 132, and an opening / closing body frame 204 that protrudes from the peripheral edge of the second guide wall 202 to the front side. doing. As shown in FIG. 9, the third guide wall 203 is formed in a plate shape having a substantially triangular shape in plan view, and is arranged separately from the second guide wall 202. The surface of the second guide wall 202 and the third guide wall 203 facing the first guide wall 132 functions as a second coin guide surface 206 that guides one surface of the coin C. In the center of the second guide wall 202, an arc-shaped coin drop opening 208 along the coin passage 106 is formed. The coin drop opening 208 is for dropping the coin C when the coin C rolling in the coin passage 106 is a small-diameter fake coin.

  As shown in FIG. 9, on the back surface of the second guide wall 202 (that is, the surface opposite to the first guide wall), an arc-like shape that is obliquely downwardly lowered (slightly downwardly inclined in FIG. 9) is provided below the coin drop opening 208. A first guide plate 252 having an upper end surface 253 is attached. The first guide plate 252 has a thickness slightly larger than the thickness of the coin C. The upper end surface 253 of the first guide plate 252 functions as a guide rail 256 that guides the outer peripheral surface of the coin C inserted from the inlet 122 downward to the right.

  The opening / closing body frame 204 includes an upper frame portion 212, a left frame portion 213, a lower frame portion 214, and a right frame portion 215. The opening / closing body 104 has an upper swing lever 216 that extends rightward at the upper portion of the right frame portion 215 and a lower swing lever 218 that extends rightward at the lower portion of the right frame portion 215 and then bends downward. (See FIG. 1 and FIG. 7). Shaft insertion holes 220 and 222 are formed at the distal ends of the upper swing lever 216 and the lower swing lever 218, and the support shafts 152 and 154 of the main body 102 are inserted into the shaft insertion holes 220 and 222. The opening / closing body 104 is supported with respect to the main body 102 so as to be pivotable about an axis L1 (see FIG. 2). Therefore, the opening / closing body 104 has a closed position where the first guide wall 132 and the second guide wall 202 and the third guide wall 203 face each other, and the second guide wall 202 and the third guide wall 203 are connected to the first guide wall 132. It can be displaced to the open position away from it.

  A cylindrical hooking protrusion 224 that protrudes upward is formed on the upper part of the upper swinging lever 216, and a cylindrical hooking protrusion 156 that protrudes upward is formed on the upper right part of the main body 102. One end of a spring 226 is latched on the latching protrusion 224, and the other end of the spring 226 is latched on the latching protrusion 156. As a result, a moment around the support shafts 152 and 154 is generated in the opening / closing body 104, and the opening / closing body 104 receives a biasing force toward the first guide wall 132. In other words, elastic turning force always acts on the opening / closing body 104 so as to approach the first guide wall 132.

  The opening / closing body 104 urged by the spring 226 is stopped at the closed position when a later-described second guide plate 260 attached to the back surface of the opening / closing body 104 abuts against a protrusion 145 of the main body 102. In this state, a space slightly larger than the thickness of the coin C is formed between the first coin guide surface 140 and the second coin guide surface 206.

  The left frame portion 213 is formed with a protrusion 219 that protrudes to the left outward. The recess 143 of the left side wall 134 is disposed corresponding to the protrusion 219, and the protrusion 219 can enter the recess 143 when the opening / closing body 104 is rotated. This prevents the protrusion 219 from contacting the left side wall 134. In other words, the recess 143 functions as a relief groove for the protrusion 219. By extending the left end portion (the right end portion in FIG. 9) of the first guide plate 252 to the protrusion 219, the guide rail 256 is disposed close to the left side wall 134 of the main body 102 and is introduced from the inlet 122. The coin C can move smoothly on the guide rail 256.

  Between the upper swinging lever 216 and the lower swinging lever 218, like the cover portion 146 of the main body 102, a cover portion having an outer shape in which a part of a truncated cone is substantially symmetrically connected vertically. 230 is formed. A space corresponding to the impeller rotation region is formed inside the cover portion 230. As shown in FIG. 3A, a pair of notches 234 and 236 symmetrical to a straight line L2 perpendicular to the surface of the second guide wall 202 are formed at the left end 232 of the cover portion 230. . Accordingly, the left end 232 of the cover portion 230 is formed in an E shape having an upper portion 238, an intermediate portion 240, and a lower portion 242. The 3rd guide wall 203 is supported by the front-end | tip of the intermediate part 240 of the left side edge part 232 (refer FIG. 2). A cutout (not shown) similar to the left end 232 is also formed in the right end 244 (see FIG. 7) of the cover 230.

  On the surface of the opening / closing body 104, a plurality of guide protrusions 286 extending from the lower end of a later-described coin drop opening 208 to the lower frame portion 214 are formed (see FIG. 1). The guide ridge 286 becomes higher as it goes obliquely downward from the surface of the opening / closing body 104, and is inclined so as to be equal to the height of the arcuate end surface 288 formed on the lower frame portion 214. As a result, the coin C dropped from the coin drop opening 208 slides down the guide protrusion 286 and falls downward in an inclined posture from the arcuate end surface 288 toward the oblique front of the main body 102.

(Coin passage)
The coin passage 106 includes a first coin guide surface 140 of the first guide wall 132, a second coin guide surface 206 of the second guide wall 202 and a fourth coin guide surface 494 of a cover member 118 described later, a guide rail 256, 144 and a movable guide rail 402 (described later) disposed between the guide rails 256 and 144, and a lower end surface 145 a of the protrusion 145 of the main body 102, and the coin C rolls from the inlet 122 toward the outlet 124. It has a function. The coin passage 106 is connected to the first coin passage portion 162 (see FIGS. 1 and 6) that curves substantially rightward from the inlet 122 and then curves to the right, and a downward axis. A second coin passage portion 164 (see FIG. 6) that extends along L3, and a third coin passage portion 166 that continues to the second coin passage portion 164 and extends diagonally downward while curving in the right direction. (See FIG. 6). When viewed from the front side of the main body 102, the third coin passage portion 166 is positioned below the axis L3 of the second coin passage portion 164 from a position slightly shifted to the right with respect to a rotation axis RL of the impeller 302 described later. It extends towards the outlet 124. Therefore, the coin C rolling on the second coin passage portion 164 along the axis L3 is introduced into the third coin passage portion 166 immediately after its center passes in the vicinity of the rotation axis RL, and obliquely rightward with respect to the axis L3. After the moving direction is changed downward, the sheet is discharged from the outlet 124.

  In the coin passage 106, a plurality of protrusions 147 are formed along the guide rail 256 on the first coin guide surface 140 of the first guide wall 132 (see FIG. 6). These ridges 147 extend vertically downward from the inlet 122 after being vertically lowered and curved. The ridge 147 has a function of reducing the movement resistance of the coin C rolling on the coin passage 106.

(Coin sorting section)
The coin sorting unit 108 has a function of discriminating whether the coin C is true or false based on the diameter in the first coin passage unit 162 and removing a small-diameter fake coin from the coin passage 106. The coin sorting unit 108 includes a second guide plate 260 attached to the back surface of the second guide wall 202, and a deflecting device 262 that deflects the coin C rolling on the first coin path 162 toward the coin dropping opening 208. Consists of.

  First, the second guide plate 260 will be described with reference to FIG. The second guide plate 260 is disposed above the coin drop opening 208, and is located in the same plane as the lower end surface 264 that is slanted to the right (obliquely slanted to the left in FIG. 9) and the second coin guide surface 206. A coin guide surface 266. The second guide plate 260 is disposed such that its lower end surface 264 is positioned below the lower end surface 145 a of the protrusion 145 of the first guide wall 132. The third coin guide surface 266 is arranged with a gap slightly larger than the thickness of the coin C with respect to the first coin guide surface 140 in a state where the opening / closing body 104 is located at the closed position. The lower end surface 264 has a curved surface 264a that is similarly curved so as to be parallel to the guide rail 256 (in other words, the upper end surface 254 of the first guide plate 252), and a flat surface 264b that is parallel to the movable guide rail 402 described later. And have. The distance between the lower end surface 264 and the guide rail 256 is set to a dimension corresponding to the diameter of the coin C to be sorted (that is, the genuine coin), for example, a value slightly larger than the diameter of the genuine coin.

  Next, the deflecting device 262 will be described mainly with reference to FIG. The deflecting device 262 includes a deflecting body 268 and a biasing means 270. The deflecting body 268 is rotatably supported by a support shaft 272 disposed at the upper end of the back surface of the main body 102, and passes through the arc-shaped opening 172 formed in the first guide wall 132, in other words, the coin passage 106 (in other words, The first coin passage portion 162) is attached so as to be able to advance and retreat. The deflecting body 268 has a plate shape and is curved in accordance with the first coin passage portion 162. A weight body 274 as an urging means 270 is attached to the back surface side of the first guide wall 132 of the deflecting body 268. Therefore, a predetermined moment acts on the deflecting body 268 in the direction toward the back side of the paper surface of FIG. 4 with the support shaft 272 as a fulcrum. Thereby, normally, the deflecting body 268 protrudes into the coin passage 106 with a predetermined moment. The urging means 270 only needs to apply an urging force to the deflecting body 268, so that a spring can be used instead of the weight body 274. However, the use of the weight body 274 is preferable because the individual variations are small and the quality is stable.

  The deflecting body 268 is disposed close to the second guide plate 260 in the coin path 106 so that the upper end side surface of the coin C rolling on the coin path 106 can be pushed toward the second guide wall 202 side. Yes. Further, since the tip of the deflecting body 268 is inclined with respect to the coin passage 106, when the deflecting body 268 is positioned in the coin passage 106, the coin C inserted from the inlet 122 is guided laterally, and the coin The force pushed out from the passage 106 is received. When the coin C introduced into the coin passage 106 is a genuine coin, the coin C rolling along the guide rail 256 is guided by the third coin guide surface 266 of the second guide plate 260 on the upper end side surface thereof. Therefore, even if pushed by the deflecting body 268, the coin passage 106 is moved as it is. On the other hand, when the coin C is a small-diameter fake coin, the upper end side surface is not guided by the third coin guide surface 266 of the second guide plate 260, so when pushed by the deflecting body 268, The coin is dropped and dropped from the coin drop opening 208.

  The first coin guide surface 140 of the first guide wall 132 forming the coin passage 106 is inclined forward to the front side of the main body 102, and therefore the deflecting device 262 is omitted when the inclination angle is large. can do.

(Reject device)
The reject device 110 has a function of removing the coin C jammed in the coin passage 106 from the coin passage 106. The reject device 110 is disposed on the upper left side of the first guide wall 132 (upper right side in FIG. 4) on the back surface of the main body 102, and the support shaft 272 that is a pivot shaft is inserted into a shaft insertion hole (not shown). And a driven lever 280 that is pivotally attached, and extends to the front side of the main body 102 at the lower left (lower right in FIG. 4) of the driven lever 280 and is formed at the left end of the first guide wall 132. A pushing lever 282 whose tip reaches the back surface of the second guide wall 202 through the rectangular opening 174 is formed.

  As described above, since the elastic turning force always acts on the opening / closing body 104 so as to approach the first guide wall 132, the front end of the pushing lever 282 is moved to the second guide wall 202 (in other words, the first guide plate 252). ) And is rotated clockwise in FIG. In other words, the urging force of the spring 226 acts on the push lever 282 via the opening / closing body 104, and the state where the tip of the push lever 282 is locked to the back surface of the second guide wall 202 is maintained. . When the coin C jams in the coin passage 106 and stops rolling, the return lever (not shown) of the gaming machine is operated. In that case, the inclined surface 280a of the driven lever 280 is pushed down, and the driven lever 280 is rotated counterclockwise in FIG. Thereby, the pushing lever 282 pushes the second guide wall 202, and the opening / closing body 104 is rotated to move to the reject position. In this state, the first guide plate 252 is separated from the first guide wall 132 by more than the thickness of the coin C, and the coin C that can no longer roll in the coin passage 106 falls from the guide rail 256. Then, the dropped coin C is returned to a predetermined return port (not shown) through the reject passage 182 (see FIG. 7) in the concave groove 138.

(Coin acceptance restriction device)
The coin acceptance restriction device 112 has a function of restricting the movement of the coin C in the coin passage 106 when the gaming machine is in a coin acceptance refusal state. In other words, the coin C that rolls in the coin passage 106 is stopped. The coin acceptance restriction device 112 includes an impeller 302 that can rotate around a rotation axis RL orthogonal to the axis L3 of the coin path 106 (in other words, the second coin path portion 164) on the side of the coin path 106, And a rotation stopping device 304 for stopping the rotation of the impeller 302.

  First, the impeller 302 will be described with reference to FIGS. 6, 8, 11, and 12. The rotation axis RL of the impeller 302 is arranged at a predetermined distance D on the front side of the main body 102 with respect to the first coin guide surface 140 (see FIG. 8). The impeller 302 includes a blade support body 306 having a cylindrical outer peripheral surface 308 extending along the rotation axis RL, and three blades 321, 322, and 323 formed on the outer peripheral surface 308. (See FIG. 11). A shaft hole 310 is formed in the blade support 306 along the rotational axis RL, and the cross-sectional shape of the blade support 306 is annular. A support shaft 312 extending along the rotation axis RL is inserted into the shaft hole 310, and the blade support 306 is rotatably supported with respect to the support shaft 312. As shown in FIG. 6, the upper end portion and the lower end portion of the support shaft 312 are in shaft holes (not shown) formed in shaft support portions 192 and 194 that protrude from the first guide wall 132 to the front side in the main body 102. It is fitted and fixed. A disc-shaped protruding plate 314 that protrudes outward from the outer peripheral surface 308 is formed at the center in the extending direction of the blade support 306. The diameter of the protruding plate 314 is set such that a gap slightly larger than the thickness of the coin C is formed between the first guide wall 132 and the protruding plate 314. The protruding plate 314 protrudes regardless of the rotational position of the impeller 302 so that a gap more than necessary is not formed in the second coin passage portion 164.

  As shown in FIGS. 8 and 11, the blades 321, 322, and 323 are arranged on the outer peripheral surface 308 of the blade support 306 so that the circumferential direction is divided into three. In other words, on the outer peripheral surface 308, the blades 321, 322, 323 are arranged at equiangular intervals (that is, 120 degrees). The blades 321, 322, and 323 are curved in an arc shape in a line of sight along the rotation axis RL. Immediately after projecting into the coin passage portion 106, the projecting portions of the blades 321, 322, and 323 form an acute angle with respect to the axis L3 of the second coin passage portion 164, and the blades 321, 322, and 323 exit from the coin passage 106. The portion of the blades 321, 322, and 323 that protrudes into the coin passage 106 immediately before is formed so as to be substantially parallel to the axis of the second coin passage portion 164. That is, as shown in FIG. 12A, immediately after the blade 321 protrudes into the coin passage 106, the tangent TL1 of the portion of the blade 321 protruding into the coin passage 106 and the axis L3 form an acute angle θ. Further, as shown in FIG. 12B, the tangent line TL2 and the axis line L3 of the portion of the blade 321 immediately before retreating from the coin passage 106 are substantially parallel to each other. The blades 322 and 323 are the same as the blade 321.

  Further, as shown in FIG. 11, the blades 321, 322, and 323 are each formed with a V-shaped notch 326 that is tapered from the tip toward the rotation axis RL side. The notch 326 is formed so as to face the peripheral surface of the coin C on both sides of the diameter line CL passing through the center of the coin C and parallel to the axis L3 of the second coin passage portion 164 (FIG. 11B). reference). Accordingly, tapered tips 321a, 321b, 322a, 322b, 323a, and 322b are formed on the blades 321, 322, and 323 at positions corresponding to the upper and lower ends of the coin C, respectively.

  In the above configuration, by curving the blades 321, 322, and 323, the angle θ is increased (in other words, an angle closer to a right angle), and the coin C and the following coin C are preceded by the coin path portion 106. The blades 321, 322, and 323 easily enter between them. Moreover, since a gap SP is formed between the preceding coin C and the succeeding coin C above and below the diameter line CL, the tip portions 321a, 321b, 322a of the blades 321, 322, 323 are formed in the gap SP. 322b, 323a, 322b can enter. Therefore, even when the preceding coin C and the succeeding coin C are in contact, the coins C can be separated one by one through the blades 321, 322, and 323.

  Further, when the coin C comes into contact (or collides) with the protruding portion immediately after the blades 321, 322, 323 protrude into the coin passage portion 106, the component force VF perpendicular to the tangent line TL 1 of the protruding portion is applied to the blades 321, 322. 323 (see FIG. 12A). Thereby, the clockwise rotational force in FIG. 12A acts on the impeller 302, and the impeller 302 can be reliably rotated. In other words, the blades 321, 322, and 323 are pushed by the coin C, and the coin C moves downstream of the coin passage 106, whereby the impeller 302 rotates in the clockwise direction FR of FIG. On the other hand, the component force HF parallel to the tangent line TL1 is directed in the extending direction of the blades 321, 322, and 323, so that the drag acts on the coin C due to the rigidity of the blades 321, 322, and 323. However, immediately after the coin C contacts (or collides) with the blades 321, 322, and 323 protruding from the coin passage 106, the impeller 302 starts to rotate, and the blades 321, 322, and 323 are rotated as the impeller 302 rotates. Since the angle formed between the portion protruding into the coin passage 106 and the axis L3 increases, the drag force on the coin C gradually decreases. Then, as shown in FIG. 12B, immediately before the blades 321, 322, 323 retreat from the coin passage 106, the portions of the blades 321, 322, 323 that protrude into the coin passage 106 are substantially parallel to the axis L 3. Therefore, at this time, the drag exerted by the blades 321, 322, and 323 on the coin C is lost. Therefore, the influence of the impeller 302 on the moving speed of the coin C can be reduced.

  The curvatures of the blades 321, 322, and 323, the angle α of the V-shaped notch 326 (see FIG. 11A), and the interval D (see FIG. 8) between the first coin guide surface 140 and the rotation axis RL are selected. The coin C (in other words, a genuine coin) is optimized in accordance with the diameter and thickness. This is because, as shown in FIG. 19A, it is necessary to cause a state in which one coin C is sandwiched between the front and rear blades 321 and 322 in the coin passage 106. Thereby, even if the preceding coin C and the succeeding coin C are in contact, the preceding coin C and the succeeding coin C can be more reliably separated via the blades 322, and the occurrence of biting can be prevented. .

  In this embodiment, the impeller 302 has three blades 321, 322, and 323, but the number of blades may be at least three, and can be changed as necessary.

  Next, the rotation stopping device 304 will be described with reference to FIGS. 8, 10, and 13. The rotation stop device 304 has a function of stopping the rotation of the impeller 302 by the coin C. As shown in FIGS. 10 and 13, the rotation stopping device 304 is a stopper 332 that can appear and disappear in the rotation path of the blades 321, 322, and 323 of the impeller 302. The stopper 332 includes a swinging lever 336 that can rotate with respect to the support shaft 334, and a locking body 338 provided at the tip of the swinging lever 336. The base end of the swing lever 336 is connected to the outer peripheral surface of a cylindrical rotating portion 342 that is rotatably supported by the support shaft 334. A substantially cylindrical driven part 344 is formed at the bottom eccentric position of the rotating part 342. The locking body 338 has a substantially triangular prism outer shape, and has a locking surface 346 that is suspended from the upstream side of the coin passage 106 when the swinging lever 336 is in the standing posture as shown in FIG. doing. The swinging lever 336, the locking body 338, the rotating portion 342 and the driven portion 344 are integrally formed, and all of them can rotate around the support shaft 334. If necessary, a part or all of the swinging lever 336, the locking body 338, the rotating part 342, and the driven part 344 can be individually produced and assembled. However, it is preferably formed integrally from the viewpoint of dimensional accuracy and cost.

  As shown in FIGS. 8 and 10, the stopper 332 is disposed below the rotation path of the blades 321, 322, and 323 of the impeller 302 on the back side of the main body 102. The locking body 338 of the stopper 332 can protrude and retract from an opening 148 formed in the bottom portion 146 a of the cover portion 146 of the main body 102. That is, as shown in FIG. 13A, when the swinging lever 336 is in the standing posture, the locking body 338 protrudes into the cover portion 146 through the opening 148, and FIG. As shown in FIG. 4, the swinging lever 336 rotates clockwise and the swinging lever 336 is changed from the standing posture to the inclined posture, so that the locking body 338 can be displaced to the retracted position P1 where the cover 146 is retracted. It is. When the locking body 338 is located at the protruding position P <b> 2, the blades 321, 322, and 323 of the impeller 302 that rotates in the clockwise direction in the cover portion 146 contact or collide with the locking surface 346 of the locking body 338. Thereby, the rotation of the impeller 302 is stopped. On the other hand, when the locking body 338 is located at the withdrawal position P1, the rotation of the impeller 302 is continued. In other words, the locking body 338 protrudes into the rotation path of the blades 321, 322, and 323 of the impeller 302 to stop the rotation of the impeller 302, and the locking body 338 is stopped from the blades 321, 322, The impeller 302 can be rotated by leaving the rotation path 323.

  The driven portion 344 is locked in a locking groove 353 of a slide member 352 that slides parallel to the back surface of the first guide wall 132 (see FIG. 13). The slide member 352 extends in a direction parallel to the bottom portion 146a of the cover portion 146, and one end (the right end in FIG. 10) is bent toward the first guide wall 132 to form an L-shape, and the main body portion 354 A driven portion 356 extending in a direction perpendicular to the lower side surface and a guided portion 358 extending in a direction perpendicular to the left side surface and the right side surface of the driven portion 356 are provided (see FIGS. 10 and 13). . The main body portion 354 protrudes downward on the other end side (left end side in FIG. 13), and a locking groove 353 is formed in the protruding portion. The guided portion 358 is guided by a guide portion 176 provided so as to protrude from the back surface of the first guide wall 132. The guide portion 176 includes a guide surface 176a parallel to the first guide wall 132, and a protrusion 176b extending at a right angle to the back surface of the first guide wall 132 and parallel to the bottom portion 146a of the cover portion 146. ,have. The guide portion 176 is disposed such that the bottom surface (not shown) of the guided portion 358 is in contact with the guide surface 176a and the lower side surface 358b of the guided portion 358 is in contact with the protrusion 176b. In the driven portion 356 of the slide member 352, a concave groove 356a into which the protrusion 176b of the guide portion 176 is inserted is formed on the bottom surface (not shown) opposite to the back surface of the first guide wall 132.

  A driving device 360 that slides the slide member 352 is attached below the guide portion 176 on the back surface of the first guide wall 132. In this embodiment, the driving device 360 is a solenoid 364 having an armature 362. The armature 362 is inserted into a stepped through hole 356b formed in the driven portion 356 of the slide member 352, and the tip end portion 362a of the armature 362 is latched to the step of the through hole 356b. The armature 362 is moved in a direction in which the armature 362 protrudes by a spring 366 disposed between the driven portion 356 of the slide member 352 and the solenoid 364, in other words, in a direction in which the driven portion 356 of the slide member 352 moves away from the solenoid 364. It is energized. The biasing force of the spring 366 is transmitted to the swing lever 336 via the driven portion 356 of the slide member 352, the main body portion 354, the driven portion 344 of the stopper 332, and the rotating portion 342, and the swing lever 336 is counteracted in FIG. Rotate clockwise. In other words, an elastic rotational force that causes the locking body 338 to protrude into the rotation path of the blades 321, 322, and 323 of the impeller 302 always acts on the stopper 332. The stopper 332 protruding by this turning force is stopped at the protruding position P2 when the locking body 338 is locked to the right end of the opening 148 (the left end in FIG. 13A).

  In the above configuration, when the gaming machine is in the acceptance-permitted state, the solenoid 364 is excited and the armature 362 moves toward the solenoid 364 against the biasing force of the spring 366. Therefore, the swinging lever 339 is rotated in the clockwise direction that assumes the inclined posture of FIG. 13B, and the locking body 338 of the stopper 332 is held at the retracted position P1. In this state, when the gaming machine shifts from the acceptance-permitted state to the acceptance-rejected state, the solenoid 364 changes from the excited state to the demagnetized state. As a result, the swinging lever 339 is rotated counterclockwise in FIG. 13B by the biasing force of the spring 366 to be in the standing posture, and the locking body 338 of the stopper 332 is moved from the retracted position P1 in FIG. 13B. It is displaced to the protruding position P2 in FIG.

  In the process in which the locking body 338 is displaced from the retracted position P1 to the protruding position P2, any one of the blades 321, 322, and 323 that are pushed and rotated by the movement of the coin C contacts the locking body 338 (or When a collision occurs, a force directed to the moving direction of the blades 321, 322, and 323 acts on the locking body 338. Since the locking body 338 is provided at the tip of the swinging lever 336 that is rotatably supported, the moving direction of the blades 321, 322, and 323 and the rotation of the swinging lever 336 when the locking body 338 protrudes. The direction is the same. Therefore, when the locking body 338 comes into contact with (or collides with) the rotating blades 321, 322, and 323, the swing lever 336 rotates in the direction in which the locking body 338 protrudes. In other words, the contact (or collision) between the locking body 338 and the rotating blades 321, 322, and 323 facilitates the protrusion of the locking body 338 to the rotation path of the blades 321, 322, and 323. Therefore, the time for the restricting body 338 to move from the retracted position P1 to the protruding position P2 is shortened, and the response speed as the stopper 332 is increased. Thereby, the occurrence of stagnation can be prevented more reliably. Further, since a sufficient response speed can be obtained even if the biasing force of the spring 366 is weakened, the driving force of the solenoid 364 can be reduced, and the cost, size and power can be reduced.

(Coin dropping device)
The coin dropping device 114 has a movable guide rail 402 whose posture can be changed by being rotatably supported by a support shaft 404 parallel to the axis L3 of the second coin passage portion 164, and the movable guide rail 402 in a predetermined posture. And a posture holding mechanism 406 for holding. The movable guide rail 402 is disposed between the guide rail 256 and the guide rail 144 and forms the second coin passage portion 164 of the coin passage 106.

  First, the movable guide rail 402 will be described with reference to FIGS. 6, 13, and 14. The movable guide rail 402 extends in a direction parallel to the axis L3 and has a guide rail main body 412 having a guide surface 408 for guiding the outer peripheral surface of the coin C, and the left end of the guide rail main body 412 on the back side of the main body 102. And a weight portion 414 protruding from the portion (the right end portion in FIG. 13).

  The guide rail body portion 412 is disposed in a horizontally long rectangular opening 180 formed at substantially the center of the first guide wall 132 (see FIG. 6). The guide rail main body 412 rotates about the support shaft 404, the first posture S1 in which the guide surface 408 protrudes into the second coin passage portion 164, and the guide surface 408 withdraws from the second coin passage portion 164. The posture can be changed to the second posture S2. That is, when the guide rail body 412 rotates in the clockwise direction R1 in FIG. 14, the guide surface 408 protrudes substantially perpendicular to the first coin guide surface 140 of the first guide wall 132, and the guide surface 408 covers the cover of the main body 102. The rotation is stopped upon contact with the bottom 146a of the portion 146. In this state, the coin C introduced into the second coin passage portion 164 is in the first posture S1 that can roll on the guide surface 408. When the guide rail body 412 rotates in the counterclockwise direction R2 of FIG. 14, the guide surface 408 becomes parallel to the first coin guide surface 140, and the weight 414 comes into contact with the back surface of the first guide wall 132 and stops rotating. Is done. In this state, the guide rail main body portion 412 is accommodated in the opening 180, and the coin C introduced into the second coin passage portion 164 assumes a second posture S2 in which the coin C falls downward due to its own weight.

  As shown in FIG. 14, the weight portion 414 protrudes obliquely downward with respect to the guide surface 408 on the opposite side of the guide rail body portion 412 across the support shaft 404, and the weight of the guide rail body portion 412 is lowered by its own weight. Has the action of rotating in the clockwise direction R1. In other words, the weight portion 414 has a function of changing the posture of the guide rail body portion 412 from the second posture S2 to the first posture S1.

  Next, the posture holding mechanism 406 will be described with reference to FIGS. 13 and 15. The posture holding mechanism 406 includes a locking body 416 provided on the left side surface (the right side surface in FIG. 13A) of the swing lever 336 constituting the stopper 332, and the right end portion of the guide rail main body portion 412 (FIG. 13 ( A) is constituted by a holding body 420 supported on a left end portion) via a lever 418. The locking body 416 has a substantially triangular pyramid shape having an inclined surface 416a inclined to the left side (right side in FIG. 13A), and is formed integrally with the swing lever 336. The holding body 420 has a columnar shape having a curved oval top surface and bottom surface, and the bottom surface is connected to a lever 418 extending outward from the guide rail main body portion 412. The lever 418 and the locking body 416 are formed integrally with the guide rail main body 412.

  The locking body 416 rotates clockwise as shown in FIGS. 13A and 13B when the swinging lever 336 is changed from the standing posture to the inclined posture, and the guide rail main body 412 is moved to the first posture S1. In this state, the holding body 420 is locked. As a result, the first posture S1 of the guide rail body 412 is maintained. Further, even when the guide rail main body 412 is in the second posture S2, the swinging lever 336 is changed from the standing posture to the inclined posture, so that as shown in FIGS. 15A and 15B, the locking body Since the inclined surface 416a of 416 pushes the upper surface of the holding body 420, the guide rail main body 412 is rotated in the direction of the arrow R1 via the lever 418. Thus, after the guide rail body 412 is changed from the second posture S2 to the first posture S1, the first posture S1 is maintained.

  When the guide rail main body 412 is held in the first posture S1 by the holding body 420, the coin C introduced into the second coin passage 164 rolls on the guide surface 408 and moves to the third coin passage 166. Head. At this time, the swinging lever 336 is in an inclined posture, and the locking body 338 of the stopper 332 is in the retracted position P1, so that the impeller 302 can rotate without being stopped. Accordingly, the coin C rolling on the second coin passage portion 164 is discharged from the outlet 124 through the third coin passage portion 166 without being restricted by the impeller 302. On the other hand, when the guide rail body 412 is not held in the first posture S1 by the holding body 420, the swinging lever 336 is in the standing posture, and the locking body 338 of the stopper 332 is in the protruding position P2, so that the impeller 302 The rotation is stopped. Therefore, the coin C introduced into the second coin passage portion 164 is prevented from moving downstream by the one of the blades 321, 322, and 323 of the impeller 302 that is locked to the locking body 338. Then, the coin C that has been prevented from moving moves from the first posture S1 to the second posture S2 due to the weight of the coin C, and falls downward from the second coin passage portion 164. In other words, the coin dropping device 114 has a function of dropping the coin C in conjunction with the displacement of the stopper 332 from the retracted position P1 to the protruding position P2 (that is, the rotation of the impeller 302). In addition, in the posture holding mechanism 406, the locking body 416 is formed integrally with the stopper 332, and the holding body and the lever 418 are formed integrally with the guide rail body 412 of the movable guide rail 402. The dropping device 114 can be realized at low cost.

(Coin detection device)
The coin detection device 116 is disposed in the third coin passage portion 166 of the coin passage 106 and passes through the second coin passage portion 164 and is introduced into the third coin passage portion 166 without being excluded by the coin dropping device 114. Coin C is detected. As the coin detection device 116, a transmissive photoelectric sensor, a reflective photoelectric sensor, a magnetic sensor, a contact sensor, and the like can be used, and it is preferable to arrange a plurality of coin detecting devices 116. This is because by determining the output order of detection signals, etc., it is possible to determine fraud due to the insertion of a fraudulent instrument from outside. Also, when different types of sensors are used, there is an advantage that fraud is made more difficult because fraud must be performed in response to different sensors.

  In the present embodiment, the coin detecting device 116 includes two transmissive photoelectric type coin sensors 452 and 454 that are arranged close to each other in the third coin passage portion 166. The coin sensors 452 and 454 each have a light projecting unit and a light receiving unit arranged with the third coin passage unit 166 interposed therebetween, and an electrical first coin detection signal CS1 having a predetermined output level as the coin C is detected. And the 2nd coin detection signal CS2 is output. The coin sensors 452 and 454 are attached to the main body 102 via the sensor holding part 456. The coin sensor 452 disposed on the upstream side in the third coin passage portion 166 can detect the coin C that is moving from the second coin passage portion 164 to the third coin passage portion 166, so that the second coin passage portion 164 is detected. It is arranged in the vicinity of

(Thread hanging prevention device)
The yarn suspension preventing device 120 has a function of preventing fraud in which a tentacle thread or the like is tied to the coin C and the coin C once determined to be a genuine coin is pulled back by the tenji thread and is determined again as a genuine coin. As shown in FIG. 7, in this embodiment, the yarn suspension preventing device 120 is disposed on the upper right side of the third coin passage portion 166. As shown in FIG. 16A, the yarn suspension preventing device 120 includes a lateral support shaft 464 attached to a rectangular protruding wall 462 (see FIG. 4) perpendicular to the back surface of the first guide wall 132, and a support shaft. A pull-back preventing body 466 rotatably supported on the shaft 464. The pullback preventing body 466 has a main body portion 468 having a substantially rectangular shape in plan view, and a support shaft 464 is inserted into a shaft insertion hole 469 formed at one corner of the main body portion 468. The main body 468 is formed with a locking projection 470 that protrudes at right angles to the one side surface 468a, and the side surface 468a and the locking projection 470 constitute a U-shaped locking recess 472. A concave groove 474 extending from the locking recess 472 toward the side surface 468b of the main body 468 is formed on one surface of the pull-back prevention body 466 on the outlet 124 side.

  Since the first guide wall 132 (in other words, the first coin guide surface 140) is inclined with respect to the vertical direction, as shown in FIG. The arcuate corner portion 468c positioned diagonally with respect to the inclined posture is directed downward, and the locking projection 470 is inserted into the third coin passage portion 166 through a rectangular opening 178 formed in the first guide wall 132. Protruding. In other words, the pullback preventing body 466 crosses the third coin passage portion 166. Since the coin C introduced from the second coin passage portion 164 to the third coin passage portion 166 in this inclined posture moves to the right and downward in FIG. 7, the side surface 468b of the pullback preventing body 466 is pushed by the coin C. . With this pushing force, the pullback preventing body 466 rotates about the support shaft 464 in the counterclockwise direction of FIG. 16A, and the pullback preventing body 466 is moved from the third coin passage portion 166 as shown in FIG. 16B. Exit. Accordingly, the coin C can move toward the outlet 124 in the third coin passage portion 166. On the other hand, when the coin C is pulled up, as shown in FIG. 16C, the coin C comes into contact with the locking recess 472 of the pullback prevention body 466, and the pushing force that rotates the pullback prevention body 466 in the clockwise direction is involved. It acts on the stop recess 472. However, since the side surface 468b of the pullback preventing body 466 is locked to the inner wall surface of the opening 178 of the first guide wall 132, the clockwise rotation of the pullback preventing body 466 is prevented. Further, since the tip of the coin C enters the concave groove 474, movement of the coin C in the thickness direction is restricted by the concave groove 474. Therefore, it is impossible to pull back the coin C that has once passed through the pullback preventing body 466.

  Further, the yarn suspension preventing device 120 also has a function of preventing insertion of a fraudulent instrument from the outlet 124. That is, when a fraudulent instrument is inserted from the outlet 124, the pullback prevention body 466 prevents the fraudulent instrument from moving upstream of the coin passage 106, as in the case of the coin C. Thereby, access to the coin detection device 116 by an unauthorized tool can be prevented.

(Cover member)
The cover member 118 is composed of an impeller cover portion 482 having an outer shape in which a part of a truncated cone is substantially symmetrically connected vertically, a falling coin guide portion 484 formed in a U-shape as viewed from above, a main body 102, a fourth guide wall 485 facing the first guide wall 132 (see FIG. 2). The impeller cover portion 482 is disposed at the left end portion 486 so as to face the right end portion 244 of the cover portion 230 of the opening / closing body 104 and protects the impeller 302 together with the cover portion 230 of the opening / closing body 104 on the front side of the main body 102. It has a function to do.

  The falling coin guide 484 includes a left side wall 487 parallel to the left side wall 134 of the main body 102, a right side wall 488 that is parallel to the rotation axis RL of the impeller 302 and inclined obliquely to the left, and the left side wall 487 and the right side wall. The upper end connected to each front end of 488 is comprised by the front wall 490 which inclines to the right diagonally downward. A cylindrical body 492 narrowed downward is formed by the left side wall 487, the right side wall 488, the front wall 490 of the falling coin guide part 484, and the first guide wall 132 of the main body 102. As described above, the coin C falling from the coin drop opening 208 slides down obliquely forward of the main body 102 by the guide protrusion 286 of the opening / closing body 104. The coin C that has slid down comes into contact with or collides with the front wall 490 of the falling coin guide 484, so that the movement of the main body 102 to the front side is restricted. Thereby, the coin C is surely guided to a predetermined place without being scattered.

  The fourth guide wall 485 is disposed in parallel to the first guide wall 132 on the left side of the impeller cover portion 482. The back surface of the fourth guide wall 485 is disposed at a distance slightly larger than the thickness of the coin C from the surface of the first guide wall 132. Thereby, the back surface of the 4th guide wall 485 functions as the 4th coin guide surface 494 which forms the 3rd coin passage part 166 (refer to Drawing 10).

  In the cover member 118, a latching projection 496 is formed on the left side wall 487, and a latching projection 498 is formed on the fourth guide wall 485 via a support plate 497 extending parallel to the right side wall 136 of the main body 102. . The latching projection 496 is latched in a rectangular latching hole 139a formed on the left side wall 134 of the main body 102 (see FIG. 3A), and the latching projection 496 is a rectangular formed on the right side wall 136 of the main unit 102. Is latched in the latching hole 139b (see FIG. 3B). As a result, the cover member 118 is fixed to the main body 102.

(Anti-fraud device)
The fraud prevention device 126 allows the rotation of the impeller 302, the impeller 302 in the direction in which the coin C moves downstream, but prevents the rotation of the impeller 302 in the reverse direction, and the rotation of the impeller 302. And a rotation detecting device 504 for detecting.

  First, the operation of the impeller 302 as the fraud prevention device 126 will be described with reference to FIG. The impeller 302 has a function of preventing the fraudulent instrument IT inserted from the entrance 122 from reaching the coin detection device 116. This is particularly effective when a plate-shaped fraudulent tool IT having a planar shape along the coin passage 106 is used.

  As described above, the impeller 302 includes the blades 321, 322, the blades 322, 323, and the coins C so that one coin C is sandwiched between the blades 323, 321. 322 and 323 are arranged. When the fraudulent instrument IT is inserted from the inlet 122, the tip of the fraudulent instrument IT pushes any one of the blades 321, 322, and 323 protruding into the coin passage 106, and the impeller 302 rotates. For example, as shown in FIG. 21A, when the blade 321 protrudes into the coin passage 106, the blade 321 is pushed by the tip of the fraudulent instrument IT and the impeller 302 rotates (FIG. 21B). reference). When the fraudulent instrument IT is further pushed forward, the following blade 322 protrudes into the coin passage 106 before the blade 321 retreats from the coin passage 106 as the impeller 302 rotates as shown in FIG. . Therefore, the fraudulent instrument IT is sandwiched between the first coin guide surface 140 and the blade 322 of the coin passage 106 and cannot be pushed further. Therefore, it is almost impossible to make the tip of the fraudulent instrument IT reach the coin detection device 116.

  Next, the one-way clutch 502 will be described with reference mainly to FIG. The one-way clutch 502 includes three inclined grooves 508 formed in a rotating body 506 that rotates integrally with the impeller 302 around a rotation axis RL, and a sphere 510 that is arranged so that at least a part of the inclined groove 508 can be inserted therein. And a spherical body movement restricting body 512 that allows movement of the spherical body 510 in the vertical direction (in other words, a direction parallel to the rotation axis RL) but restricts movement in the other direction. The rotating body 506 is a disc having a predetermined radius in which a notch 507 is formed in the outer peripheral edge 506a, and is three-fold symmetric with respect to the rotation axis RL (in other words, 120-degree rotational symmetry). The rotator 506 is provided via a columnar support 514 that extends upward from the upper end of the blade support 306 along the rotation axis RL.

  The inclined groove 508 is curved in an arc shape along the outer peripheral edge 506 a of the rotating body 506, is disposed on the rotation axis RL side with respect to the notch 507, and has a width slightly smaller than the diameter of the sphere 510. The inclined groove 508 has an arcuate inner end surface 508a having the maximum depth, and an inclined bottom surface 508b whose depth decreases in the rotational direction BR opposite to the rotational direction FR of the impeller 302. When viewed from the direction along the rotation axis RL at the upper end of the support shaft 312, the inner end surface 508 a of the inclined groove 508 is positioned on the rotation direction FR side from the straight line connecting the rotation axis RL and the tips of the blades 321, 322, and 323. The inclined bottom surface 508b of the inclined groove 508 coincides with the upper surface 506b of the rotator 506 on a straight line L4 connecting the approximate center of the notch 507 and the rotation axis RL.

  The spherical body movement restricting body 512 is disposed on the right side of the shaft support portion 192 (see FIG. 6), and has a flat plate portion 512a that is disposed in parallel to the upper surface 506b of the rotating body 506 at a predetermined interval. . A through hole 516 having a diameter slightly larger than the diameter of the sphere 510 is formed in the flat plate portion 512 a at a position corresponding to the inclined groove 508, and the sphere 510 is disposed in the through hole 516. Thereby, the movement of the through-hole 516 of the sphere 510 in the circumferential direction is restricted, but the movement of the through-hole 516 of the sphere 510 in the axial direction (in other words, the vertical movement) is allowed.

  With the above configuration, when the impeller 302 rotates in the rotation direction FR due to the coin C moving downstream in the coin passage 106, the sphere 510 that has fallen into the inclined groove 508 due to its own weight moves on the inclined bottom surface 508b in the inclined groove 508. Rolls, reaches the upper surface 506b of the rotating body 506, and rolls on the upper surface 506b. Therefore, the rotation of the impeller 302 in the rotation direction FR is continued without being restricted. On the other hand, when the impeller 302 is rotated in the rotational direction BR opposite to the rotational direction FR, the sphere 510 that has fallen into the inclined groove 508 due to its own weight contacts the inner end surface 508a of the inclined groove 508. Therefore, the rotation of the impeller 302 in the rotation direction BR is stopped. That is, the rotation of the impeller 302 in the direction in which the coin C moves downstream is allowed, and the rotation of the impeller 302 in the reverse direction is prevented. As described above, the inner end surface 508a of the inclined groove 508 is located on the rotation direction FR side from the straight line connecting the rotation axis RL and the tips of the blades 321, 322, and 323. Therefore, the rotation of the impeller 302 in the reverse direction is stopped immediately before any one of the blades 321, 322, and 323 of the impeller 302 is retracted from the second coin passage portion 164 (the state of FIG. 12B). Is done.

  As the one-way clutch 502, another configuration having the same function as described above can be used. However, the above configuration has an advantage that can be realized at low cost.

  Similar to the thread suspension prevention device 120, the one-way clutch 502 prevents a fraud in which a coin C or the like is tied to the coin C and the coin C once determined to be a genuine coin is pulled back by the tengu thread and is determined again as a genuine coin. It has a function. That is, as shown in FIG. 12A, any one of the blades 321, 322, and 323 of the impeller 302, even if an attempt is made to pull back the coin C that has reached the third coin passage portion 166 in which the coin detection device 116 is disposed. Since the reverse rotation of the impeller 302 is prevented in a state in which one piece projects into the second coin passage portion 164, it is almost impossible to pull back the coin C.

  Next, the rotation detection device 504 will be described with reference to FIG. The rotation detection device 504 includes a rotating body 506 in which the three notches 507 described above are formed, and a detector 524 that detects the rotational position of the rotating body 506. The cutout 507 of the rotator 506 has a trapezoidal shape curved along the outer peripheral edge 506 a of the rotator 506, and is formed corresponding to the blades 321, 322, and 323 of the impeller 302. Edges 526 and 528 corresponding to the notches 507 are formed in the rotating body 506, and the edges 526 and 528 extend from the outer peripheral edge 506a of the rotating body 506 toward the rotation axis RL. In the rotating body 506, an annular portion excluding the notch 507 is an action region 532 on which the detector 524 acts, and a notch 507 is a non-action region 534. In other words, the action area 532 is the detected part 533 detected by the detector 524. The detected portion 533 is defined by the edge portions 526 and 528.

  The edge portion 526 is disposed at a position that bisects the angular interval on the outer peripheral surface 308 of the blade support 306 of the blades 321, 322, and 323. In other words, the detected portion 533 is detected by the detector 524 in a state where the blades 321, 322, and 323 protrude into the second coin passage portion 164 and are sandwiched between the blades 321, 322, and 323 where the coin C moves forward and backward. An edge 526 is arranged. Thereby, in the initial state before inserting the coin C, the movement of the coin C in the second coin passage portion 164 is performed regardless of the stationary position of the impeller 302 (in other words, the stationary position of the blades 321, 322, and 323). It is reliably detected. The edge portion 528 is disposed corresponding to the surface of the blades 321, 322, and 323 on the rotation direction FR side (in other words, the surface that pushes the coin C). In other words, the detection of the detected portion 533 by the detector 524 is completed when the blades 321, 322, 323 cross the plane perpendicular to the first coin guide surface 140 through the rotation axis RL. Accordingly, the coin C that moves through the third coin passage portion 166 during the detection period of the detector 524 is detected by the coin detection device 116.

  The detector 524 has a function of detecting the detected portion 533 of the rotating body 506. As the detector 524, a transmissive photoelectric sensor, a reflective photoelectric sensor, a magnetic sensor, a contact sensor, or the like can be used. In this embodiment, a transmission type photoelectric sensor 536 having a light projecting unit and a light receiving unit arranged with a rotating body 506 interposed therebetween. The photoelectric sensor 536 is attached via a sensor holding portion 525 formed on the first guide wall 132 on the back side of the main body 102. By using the same type of photoelectric sensor 536 as the coin sensors 452 and 454, parts can be shared, and there is an advantage that costs can be reduced. When the photoelectric sensor 536 detects the detected portion 533 of the rotating body 506, the photoelectric sensor 536 outputs an electrical rotation detection signal RS of a predetermined level. Since the photoelectric sensor 536 is disposed outside the coin passage 106, it is almost impossible to illegally access the photoelectric sensor 536 even if a fraudulent instrument is inserted into the coin passage 106.

  With the above configuration, the rotation detection device 504 outputs the rotation detection signal RS corresponding to the rotation position of the impeller 302. Since the impeller 302 is rotated by the coin C rolling in the coin passage 106, the coin detecting device 116 is detected when the coin detecting device 116 detects the coin C even though the rotation of the impeller 302 is not detected. It can be determined that fraud has occurred. Further, a rotation detection signal RS is output every time one coin C passes through the second coin passage portion 164, the detection of the coin C by the photoelectric sensor 536 of the rotation detection device 504, and the coin sensor 452 of the coin detection device 116, Since the detection of the coin C by 454 has a one-to-one correspondence, fraud against the coin detection device 116 can be more reliably determined.

  The action area 532 may be a non-action area and the non-action area 534 may be an action area. In this case, by using a so-called negative logic photoelectric sensor 536 that outputs a signal corresponding to the non-operation region, the same rotation detection signal RS as described above is output.

(Coin selector operation)
First, a case where the gaming machine is in an acceptance-permitted state will be described with reference to FIGS. 18 and 19. When the gaming machine is in the acceptance-permitted state, the solenoid 364 is excited, and the swing lever 336 of the stopper 332 is inclined through the slide member 352. Accordingly, the locking body 338 of the stopper 332 is positioned at the retracted position P1, and the movable guide rail 402 is held in the first posture S1 protruding into the coin passage 106. In this state, when the coin C is inserted from the inlet 122, the coin C rolling on the coin passage 106 contacts (or collides) with the blade 321 of the impeller 302 as shown in FIG. Thereby, the pushing force of the coin C acts on the blade 321 and the impeller 302 starts to rotate in the clockwise direction of FIG. As the coin C moves downstream in the coin passage 106, the rotation of the impeller 302 is continued and the state shown in FIG. Then, the blade 302 passes over the stopper 332 and is in the state shown in FIG. At this time, the next coin C is inserted from the entrance 122, and moves along the coin path 106 in a state where the preceding coin C and the succeeding coin C are continuous by rolling on the coin path 106.

  By continuing to push the blade 321 by the preceding coin C, the rotation of the impeller 302 is continued and the state shown in FIG. At this time, the leading ends 322a and 322b of the blade 322 are inserted into a gap SP (see FIG. 11B) formed between the preceding coin C and the succeeding coin C, and the preceding coin C and the succeeding coin C C is separated by blade 322. At this time, the preceding coin C pushes the blade 321 and the subsequent coin C pushes the blade 322. Thereby, the rotation of the impeller 302 is continued and the state shown in FIG. At this time, the blade 321 is withdrawn from the coin passage 106 and the pushing of the preceding coin C to the blade 321 is completed. Therefore, the preceding coin C moves obliquely downward to the right while increasing the speed due to gravitational acceleration, and is discharged from the outlet 124 as shown in FIG. On the other hand, the rotation of the impeller 302 is continued by the pushing of the blade 322 by the subsequent coin C. By repeating the above operation, the coins C inserted into the inlet 122 are sequentially discharged from the outlet 124.

  Next, a case where the gaming machine has transitioned from the acceptance-permitted state to the acceptance-rejected state will be described with reference to FIG. When the gaming machine is in the acceptance-permitted state, as in the case of FIG. 18A, when the coin C is inserted from the entrance 122, the coin C rolls in the coin passage 106, and the blade C 321 is pushed by the coin C. Then, the impeller 302 starts to rotate, and the state shown in FIG. Immediately after that, when the gaming machine is in an acceptance refusal state, the solenoid 364 is demagnetized, and the swing lever 336 of the stopper 332 is brought into an upright posture via the slide member 352. As a result, the locking body 338 of the stopper 332 is displaced from the retracted position P1 to the protruding position P2, and the holding state of the movable guide rail 402 in the first posture S1 by the posture holding mechanism 406 is released. When the impeller 302 continues to rotate as the coin C moves downstream in the coin passage 106 and the blade 321 moves to the position shown in FIG. 18B, the locking surface 346 of the stopper 332 protruding from the opening 148. The blades 321 are engaged with each other, and the rotation of the impeller 302 is stopped. As a result, the coin C is prevented from moving downstream by the blades 321 and the movable guide rail 402 is changed in posture from the first posture S1 to the second posture S2 by its own weight, as shown in FIG. As described above, the coin C falls from the coin passage 106. Further, the subsequent coins C are also sequentially dropped from the coin passage 106.

  Next, output waveforms of the rotation detection device 504 and the coin detection device 116 will be described with reference to FIGS. First, the output waveform at the normal time will be described. FIG. 22 shows the impeller in a state where the tip portions 321 a, 321 b, 322 a, 322 b, 323 a, and 323 b of the blades 321, 322, and 323 slightly protrude into the coin passage 106 on the upstream side of the rotation axis RL of the coin passage 106. A signal waveform when 302 is in a stationary state is shown. In this case, the impeller 302 is rotated by the coin C inserted into the inlet 122, and the pulse P1-0 is output as the rotation detection signal RS until the state shown in FIG. Then, in the process from FIG. 19B to the state of FIG. 19C, the pulse P1-1 is output as the rotation detection signal RS. In the output period T1 of the pulse P1-1, P2-1 and P3-1 are output as the first coin detection signal CS1 and the second coin detection signal CS2. In other words, the rotation detection signal RS, the first coin detection signal CS1, and the second coin detection signal CS2 are output correspondingly. Similarly, the pulse P1-3 of the rotation detection signal RS and the pulses P2-3 and P3-3 of the first coin detection signal CS1 and the second coin detection signal CS2 are also output in correspondence with the subsequent coin C. In addition, since the rotation detection signal RS, the first coin detection signal CS1, and the second coin detection signal CS2 are simultaneously output in the period T2, the rotation detection signal RS, the first coin detection signal CS1, and the second coin detection are detected in the period T2. From the logical product of the signal CS2, it can be easily determined that the coin C has been discharged in a normal state.

  FIG. 23 shows the impeller 302 in a state where the tip portions 321 a, 321 b, 322 a, 322 b, 323 a, and 323 b of the blades 321, 322, and 323 do not protrude into the coin passage 106 on the upstream side of the rotation axis RL of the coin passage 106. Shows a signal waveform when is in a stationary state. In this case, it is the same as the case of FIG. 22 except that the pulse P1-0 of the rotation detection signal RS is not output.

  Next, the output waveform at the time of abnormality due to fraud or failure will be described. As shown in FIG. 24, the first coin detection signal CS1 and the second coin detection signal CS2 are output even though the rotation detection signal RS is not output. In this case, it can be determined that there is an abnormality due to a failure or fraud in the photoelectric sensor 536 of the rotation detection device 504. Therefore, it is possible to prevent fraud by notifying the occurrence of an abnormality with sound or light.

  The present invention can be suitably used in combination with a coin processing device such as a gaming machine using a coin such as a pachislot machine, a money changer, a vending machine, or a ticket machine.

100 Coin Selector 102 Main Body 104 Opening / Closing Body 106 Coin Passage 108 Coin Sorting Unit 110 Reject Device 112 Coin Acceptance Restricting Device 114 Coin Dropping Device 116 Coin Detection Device 118 Cover Member 120 String Hanging Prevention Device 122 Entrance 124 Exit 126 Fraud Prevention Device 132 First Guide wall 134 Left side wall 136 Right side wall 138 Groove 139a, 139b Retaining hole 140 First coin guide surface 144 Guide rail 145 Protrusion part 146 Cover part 146a Bottom part 148 Opening 149 Protrusion part 152, 154 Support shaft 162 First coin passage part 164 Second coin passage portion 166 Third coin passage portion 176 Guide portion 182 Reject passages 192 and 194 Shaft support portion 202 Second guide wall 203 Third guide wall 204 Opening / closing body frame 206 Second coin guide surface 208 Coin drop opening 216 Swing lever 218 Lower swing lever 220, 222 Shaft insertion hole 230 Cover portion 234, 236 Notch 252 First guide plate 256 Guide rail 256 Guide rail 260 Second guide plate 262 Displacement device 266 Third coin guide surface 268 Displacement body 302 Impeller 304 Rotation stop device 306 Blade support body 308 Outer peripheral surface 310 Shaft hole 312 Support shaft 314 Protrusion 321, 322, 323 Blade 326 Notch 332 Stopper 334 Support shaft 336 Oscillating lever 338 Locking body 342 Rotation Portion 344 Driven portion 346 Locking surface 352 Slide member 353 Locking groove 360 Driving device 362 Armature 364 Solenoid 366 Spring 402 Movable guide rail 404 Support shaft 406 Posture holding mechanism 408 Guide surface 412 Guide rail body 414 Weight portion 416 Locking body 416a slope 418 Lever 420 Holding body 452, 454 Coin sensor 466 Pullback prevention body 470 Locking protrusion 472 Locking recess 474 Groove 482 Impeller cover 484 Falling coin guide 485 Fourth guide wall 494 Fourth coin guide surface 502 One-way clutch 504 Rotation detecting device 506 Rotating body 506a Outer peripheral edge 506b Upper surface 507 Notch 508 Inclined groove 508a Inner end surface 508b Inclined bottom surface 510 Sphere 512 Sphere movement restricting body 514 Support body 516 Through hole 524 Detector 526, 528 Edge 532 Working area 533 Detected Part 534 Non-operation area 536 Photoelectric sensor BR Rotation direction FR Rotation direction C Coin IT Fraud instrument L3 Axis line RL Rotation axis line CL Diameter line SP Clearance P1 Retraction position P2 Protrusion position S1 First attitude S2 Second attitude RL Rotation axis CS1 First Coin detection signal C 2 second coin sensing signal RS rotation detection signal

Claims (17)

A coin path (106) extending along a downward axis (L3) in which the inserted coin (C) rolls;
In the process in which the coin (C) rolls in the coin passage (106), a coin sorting unit (not shown) that discriminates authenticity based on at least the diameter of the coin (C) and removes the false coin from the coin passage (106). 108)
A coin detection device (116) for detecting the coin (C) downstream of the coin passage (108) with respect to the coin sorting section (108);
It is arranged upstream of the coin passage (106) with respect to the coin detection device (116), and extends in a direction orthogonal to the axis (L3) of the coin passage (106) on the side of the coin passage (106). An impeller (302) having at least three blades (321, 322, 323) capable of rotating around a rotation axis (RL) and capable of appearing and retracting in the coin passage (106) with rotation; With
A coin selector in which the blades (321, 322, 323) are arranged so that the coin (C) is sandwiched one by one between two blades on the front and back of the impeller (302) in the coin passage (106). .   The coins of the blades (321, 322, 323) immediately after the blades (321, 322, 323) are curved in an arc shape and project into the coin passage (106) in a line of sight along the rotation axis (RL). A portion projecting into the passage (106) forms an acute angle with respect to the axis (L3) of the coin passage (106), and the blade immediately before the blade (321, 322, 323) retreats from the coin passage (106). 2. The coin selector according to claim 1, wherein a portion of (321, 322, 323) protruding into the coin passage (106) is formed so as to be substantially parallel to an axis (L 3) of the coin passage (106).   The coin selector according to claim 1, wherein a one-way clutch (502) that allows rotation in a direction in which the coin (C) moves downstream but prevents reverse rotation is attached to the impeller (302). .   The blades (321, 322, 323) have a tapered V-shaped notch (326) formed from the tip toward the rotation axis (RL), and the notch (326) is formed of the coin (C The coin according to claim 1, wherein the coin faces the circumferential surface of the coin (C) on both sides of the diameter line (CL) parallel to the axis (L3) of the coin passage (106). selector.   The coin selector according to claim 1, further comprising a rotation detection device (504) for detecting rotation of the impeller (302).   The rotation detection device (504) rotates together with the detector (524) and the impeller (302), and has a working region (532) and a non-working region (534) of the detector (524). A coin selector according to claim 5, wherein the working region (532) or the non-working region (534) is formed corresponding to each of the blades (321, 322, 323). .   The coin selector according to claim 1, further comprising a rotation stop device (304) that stops rotation of the impeller (302) in a direction in which the coin (C) moves downstream of the coin passage (106).   The rotation stopping device (304) includes a stopper (332) that can be projected and retracted in a rotation path of the blades (321, 322, 323), and the protruding stopper (332) of the blades (321, 322, 323). The coin selector according to claim 7, wherein the rotation of the impeller (302) is stopped by preventing the movement.   The stopper (332) includes a swinging lever (336) rotatably supported by a support shaft and a locking body (338) provided at a tip of the swinging lever (336). Position (P1) where the locking body (338) protrudes into the rotation path of the blades (321, 322, 323) and prevents the movement of the blades (321, 322, 323) by the rotation of the lever (336) And the locking body (338) can be displaced to a position (P2) allowing the movement of the blades (321, 322, 323) by retreating from the rotation path of the blades (321, 322, 323). The coin selector according to claim 8.   The coin selector according to claim 1, further comprising a coin dropping device (114) that drops the coin (C) from the coin passage (106) in conjunction with the rotation stop of the impeller (302).   The coin dropping device (114) rotates about a support shaft (404) substantially parallel to the axis (L3) of the coin passage (106), thereby allowing the coin (C) to roll (first posture). S1) and a movable guide rail (402) whose posture can be changed to a second posture (S2) in which the coin (C) falls due to its own weight, and the movable guide rail (402) is held in the first posture (S1). The holding body (420), and the holding of the movable guide rail (402) by the holding body (420) is released in conjunction with the rotation stop of the impeller (302). Coin selector. The coin (C) inserted from the entrance (122) has a coin passage (106) extending along a downward axis (L3) on which the coin (C) rolls, and the coin (C) passes through the coin passage (106). In the rolling process, the coin sorting unit (108) determines at least the diameter of the coin (C) to eliminate false coins, and at the downstream of the coin passage (106) with respect to the coin sorting unit (108). A fraud prevention device in a coin selector (100) in which the coin (C) is detected by a coin detection device (116) and the detected coin (C) is discharged from an exit (124),
The coin passage (106) can be rotated about a rotation axis (RL) extending in a direction orthogonal to the axis (L3) of the coin passage (106) on the side of the coin passage (106). (106) comprising an impeller (302) having at least three blades (321, 322, 323) capable of appearing and retracting;
The coins (321, 322, 323) are arranged so that the coins (C) are sandwiched one by one between the two blades before and after the impeller (302) in the coin passage (106). An anti-fraud device for selectors.   The coins of the blades (321, 322, 323) immediately after the blades (321, 322, 323) are curved in an arc shape and projected into the coin passage (106) in a line of sight along the rotation axis (RL). A portion projecting into the passage (106) forms an acute angle with respect to the axis (L3) of the coin passage (106), and the blade immediately before the blade (321, 322, 323) retreats from the coin passage (106). 13. The coin selector according to claim 12, wherein a part of the coin path (106) of (321, 322, 323) is formed to be substantially parallel to the axis (L 3) of the coin path (106). Fraud prevention device.   The coin selector according to claim 12, wherein a one-way clutch (502) that allows rotation in a direction in which the coin (C) moves downstream but prevents rotation in a reverse direction is attached to the impeller (302). Fraud prevention device.   The blades (321, 322, 323) have a tapered V-shaped notch (326) formed from the tip toward the rotation axis (RL), and the notch (326) is formed of the coin (C The coin according to claim 12, which faces the circumferential surface of the coin (C) on both sides of a diameter line (CL) parallel to the axis (L3) of the coin passage (106). An anti-fraud device for selectors.   The coin selector fraud prevention device according to claim 12, further comprising a rotation detection device (504) for detecting rotation of the impeller (302).     The rotation detection device (504) rotates together with the detector (524) and the impeller (302), and has a working region (532) and a non-working region (534) of the detector (524). A coin selector according to claim 16, wherein the working region (532) or the non-working region (534) is formed corresponding to each of the blades (321, 322, 323). Fraud prevention device.

Images