Coin payout apparatus

Abstract: A coin payout apparatus suitable for use in a gaming device including a coin hopper and a coin guide (1) connected to the hopper for successively delivering coins arranged edge-to-edge has a rotary arm (7) pivotally mounted on the coin guide (1). A coin ejector roller (9) is mounted on one end of the arm (7) and is biased toward the coins in the coin guide (1). A secondary coin ejecting means (17) is provided at a position opposite the ejection roller (9). As the leading coin in the guide (1) passes between the ejector roller (9) and the secondary coin ejecting means (17), the ejector roller (9) is urged against the trailing edge of the coin, ejecting it from the guide (1). In a preferred embodiment a locking roller (12) is provided on the other end of the arm (7) which by limiting outwards movement of the coin ejector roller (9) prevents the leading coin being drawn out of the coin guide (1).

Description: The present invention relates to a coin payout apparatus for use in a device such as a slot machine. More particularly, the invention relates to the coin payout apparatus at the downstream end of a coin guide in a gaming machine. Generally, in a coin payout apparatus of this type, a plurality of coins are accumulated in a coin hopper, and a predetermined number of coins are automatically dispensed one by one in accordance with the result of a game through the coin guide to a coin dispenser opening. U.S. Patent 4,518,001 assigned to International Game Technology, discloses one conventional coin payout apparatus, in which each one of the coins is urged out of the coin guide's downstream end which is in communication with the coin dispensing opening. After the coins are paid out, further coins may be drawn from the coin guide by raking or scraping by means of a pin or the like. In addition the coins remaining in the guide may be damaged. Conventional coin payout apparatus is therefore vulnerable to theft and vandalism. DE-A-3522119 discloses a coin dispensing mechanism including a member pivotally mounted on the coin guide with a coin ejecting roller mounted on one end. The coin ejecting roller is biassed into the path of the coins in the region of the mouth of the guide. A second roller is mounted on the other end of the member and by interference with coins in the guide restricts movement of the member so as to prevent withdrawal of a coin from the mouth of the guide. According to the present invention there is provided a coin payout apparatus for use in a device including a coin hopper; and a coin guide connected to the hopper and arranged to feed a stream of coins arranged edge-to-edge forwards from the hopper to a coin dispensing opening, the coin payout apparatus comprising: an arm pivotally mounted on the coin guide, with one end portion biassed towards the path of the coins in the coin guide; a coin ejecting roller rotatably mounted on the one end portion of the arm and arranged to engage the edge of the leading coin in the coin guide with the roller in rotational contact with the edge; and means mounted on the coin guide to limit backwards movement of the arm; and detecting means for detecting rocking movement of the arm; characterised by secondary coin ejecting means rotatably mounted on the coin guide and positioned opposite the coin ejecting roller, the secondary coin ejecting means co-operating with the coin ejecting roller to urge the leading coin forwards to be ejected during an ejection operation and in that the detecting means comprise a non-contact type detecting element fixed to the coin guide, and a member mounted on the other end of the arm and projecting away from the arm which moves into the vicinity of the detecting element and away from the detecting element as the arm moves to and fro, the detecting element generating a pulse signal in response to the entry into its vicinity of the said member. The present invention overcomes the drawbacks of the prior art apparatus described above. It provides an apparatus of simple construction capable of accurately counting the number of coins paid out and resistant to theft or vandalism of the coins in the coin guide. Coins stored in the hopper are fed end-to-end through the coin guide to a coin dispensing opening. Once the widest portion of the leading coin has passed between the ejector roller and the secondary coin ejecting means it is urged out of the guide by the force of the roller against its trailing edge. At every discharge of a coin the rotary arm performs a rocking movement. In a preferred embodiment the end of the arm remote from the ejecting roller pivotally supports a locking roller. When the apparatus is not dispensing coins since the coins in the coin guide are not fed forwards, the locking roller is in close contact with the upper peripheral half portion of the coin behind the leading coin. If the ejector roller is forcibly pulled away from the leading coin in an attempt to extract the leading coin this close contact between the locking roller and the coin behind the leading coin limits the outward movement of the one end of the arm and the roller and so prevents the coin from being extracted. An example of an apparatus in accordance with this invention will now be described in detail with reference to the accompanying drawings, in which:- Figure 1 is a perspective view showing a coin payout apparatus according to an example of this invention; Figures 2(a) to 2(c) show schematic illustrations of the operation of the example; Figure 3 is a schematic illustration of the operation of the example in preventing withdrawal of a coin; A coin guide 1 is adapted to guide travel of coin 2 successively delivered in single edge-to-edge array from a coin hopper (not shown) toward a coin dispensing opening (not shown). The coin guide 1 is elevated from the hopper. The coin guide 1 includes a pair of guide plates 3 and 4 confronting with each other and spaced away from each other by a spacer 5. The spacer 5 defines sufficient width or space 6 slightly larger than a thickness of the coin so as to allow the coin to pass therethrough in edge-to edge configuration as shown in Figs. 2(a) to 3. This space 6 is uniformly provided in a direction of travel of the coins, so that the space functions as a guide passage for the coin. At a tip end portion 1a of the coin guide 1, a rotary arm 7 is pivotably supported, and which is directed in a direction substantially parallel with the payout direction of the coin as indicated by the arrow. The rotary arm 7 has an intermediate portion pivotably supported by a shaft 8 so that the arm 7 is pivoted in a substantially radial direction of the coin 2. A kick or ejector roller 9 is rotatably supported at one end (upper end in Fig. 1) of the rotary arm 7. The ejector roller 9 is directed in a direction perpendicular to the rotary arm 7, and is positioned in confrontation with an open outlet end of the coin guide 1. An outer peripheral surface of the kick roller 9 is in rotational contact with an outer peripheral end surface of the coin 2a (hereinafter simply referred to as a first coin 2a). A biasing means such as a coil spring 10 is disposed between a coin guide 1 and the one end portion of the rotary arm 7, so that the rotary arm 7 is normally biased toward the outer peripheral surface of the first coin 2a. Further, a supplemental coin ejecting means such as an auxiliary roller 17 is rotatably provided at one distal end of the coin guide 1. When the lower half portion of the first coin 2a is brought to a position where the lower half portion of the coin is interposed between the kick roller 9 and the supplemental ejecting means 17, the coin will be ejected in the direction shown by the arrow in Fig. 1 because of the biasing force of the coil spring 10. A locking roller 12 is rotatably supported to another end portion of the rotary arm 7. The locking roller 12 extends in parallel with the kick roller 9. Further, the coin guide 1 is formed with an arcuate slot 11 engageable with the locking roller 12. The locking roller 12 has an outer peripheral surface which is in selective rotational contact with an outer peripheral surface of a subsequent second or third coin 2b or 2c. A protrusion piece 13 protrudes from a side edge of the another end portion of the rotary arm 7. Further, a sensor 14 is fixedly secured to the coin guide 1 and at a position adjacent to the protrusion piece 13. The sensor 14 generates an output ON/OFF signal (pulse signal) upon every discharge of the coins responsive to the every rocking motion of the rotary arm 7. That is, the protrusion piece 13 is movable toward and away from the sensor 14 by the rocking motion of the rotary arm 7, so that every coin payout is detected by the sensor 14. The sensor 14 may preferably be a non-contact type sensor such as, for example, a magnetic proximity switch and photocoupler. This detection signal is transmitted to a counter (not shown), so that coin payout number is counted. At another side edge of the another end portion of the rotary arm 7, there is provided a stop member 15. Further, a stop means 16 is fixedly secured to the coin guide 1. The stop member 15 is brought into abutment with the stop means 16, so that excessive rocking motion of the rotary arm 7 can be prevented. Next, an operational mode will be described. First, as shown in Fig. 2(a), each of the coins 2a, 2b and 2c is forcibly supplied from the hopper in edge-to-edge alignment in the coin guide passage. In this case, the one end of the rotary arm 7 is urged toward the upper half peripheral portion of the first coin 2a by the biasing force of the coil spring 10, and the locking roller 12 is spaced away from the second coin 2b. Next, as shown in Fig. 2(b), each of the coins is further elevated by the driving force from the hopper, so that the first coin 2a squeeze itself between the ejecter roller 9 and the auxiliary ejecter roller 17 against biasing force of the coil spring As a result, the locking roller 12 is moved toward a boundary defined between the subsequent coins 2b and 2c. In this instance, the kick roller 9 is in contact with the maximum diameter portion of the first coin 2a. Further, simultaneously, the protrusion piece 13 is moved into the sensor 14, so that the pulse signal is outputted therefrom. This output signal implies the one coin payout, and the output signal is transmitted into the counter (not shown) . Thereafter, as shown in Fig. 2(c), when the coins are further advanced, the kick roller 9 is brought into contact with the lower half peripheral surface of the first coin 2a. As a result, the one end of the rotary arm 7 is rapidly moved radially inwardly with respect to the coin because of the biasing force of the coil spring 10, and accordingly, the kick roller 9 and the auxiliary roller 17 spring out the coin 2a. Then, as shown in Fig. 2(d), the second coin 2b will be at stand-by position for the subsequent payout operation. In this state, the rotary arm 7 is at suspensing position defined by the stop member 15 and the stop means 16. Such operations are repeatedly carried out for succesive coin payout. The apparatus also provides coin cheat-preventive function. Upon termination of coin payout for a player, the gaming machine is subjected to a coin payout for the next game. Fig. 3 shows a stand-by state of the coin payout device for the next game. If the first coin 2a is intended to be raked out by using a pin or the like, the upper half portion of the coin is brought into abutment with the kick roller 9, and the one end of the rotary arm 7 may be moved to a direction radially outwardly of the coin 2a against the biasing force of the coil spring 10. However, in this case, since the second coin 2b is not moved upwardly because of non-service state of the gaming machine, the lock roller 12 is moved toward the second coin and is abutted at the upper half portion thereof. Accordingly, the upper end portion of the rotary arm 7 cannot be further moved any more, to thereby prevent the first coin from being removed out. That is, advancing movement of the first coin 2a is still interrupted by the kick roller 9. (During the service state, the lock roller 12 will be entered into the boundary between the second and the third coins, so that the kick roller 9 can further be moved radially outward direction of the coin 2a to permit the coin to pass therethrough.) By the suitable determination of the dimension of the rotary arm 7 relative to the coin 2, cheat-preventive function can be provided. In addition to the cheat preventive function, movement of the rotary arm 7 is detectable by the projection piece 13 and the sensor 14. Therefore, additional coin payout number detector is not required. Instead, by the utilization of the rotary arm per se, coin payout number can be detected, to thus render the overall device simple. Further, the cheat preventive function can be provided mechanically, not electrically. Therefore, even at the general failure of power supply, coin cheating is still avoidable.

Claims: A coin payout apparatus for use in a device including a coin hopper; and a coin guide connected to the hopper and arranged to feed a stream of coins arranged edge-to-edge forwards from the hopper to a coin dispensing opening, the coin payout apparatus comprising: an arm (7) pivotally mounted on the coin guide (1), with one end portion biassed towards the path of the coins in the coin guide; a coin ejecting roller (9) rotatably mounted on the one end portion of the arm (7) and arranged to engage the edge of the leading coin (2a) in the coin guide with the roller (9) in rotational contact with the edge; means (16) mounted on the coin guide to limit backwards movement of the arm (7); and detecting means (13,14) for detecting rocking movement of the arm (7); characterised by secondary coin ejecting means rotatably mounted on the coin guide (17, 17A) and positioned opposite the coin ejecting roller (9), the secondary coin ejecting means cooperating with the coin ejecting roller to urge the leading coin forwards to be ejected during an ejection operation and in that the detecting means comprise a non-contact type detecting element (14) fixed to the coin guide, and a member (13) mounted on the other end of the arm and projecting away from the arm (7) which moves into the vicinity of the detecting element and away from the detecting element as the arm (7) moves to and fro, the detecting element generating a pulse signal in response to the entry into its vicinity of the said member. An apparatus according to claim 1, further comprising a locking roller (12) rotatably mounted on the other end portion remote from the one end portion, the locking roller being movable into the path of the coins in the coin guide behind the leading coin and being positioned so that as the coins in the guide are fed forwards the locking roller (12) moves inwards into the region defined by the trailing edge of one coin and the leading edge of another coin immediately behind the one coin at the same time as the coin ejecting roller (9) is in contact with and displaced outwards by the widest portion of the leading coin (2a). An apparatus according to claim 1 or 2, in which the means (16) mounted on the coin guide to limit backwards movement of the arm (7) comprise a stop projecting forwards away from the coin guide in the plane generally normal to the plane of movement of the arm, and fixed adjacent the said other end of the arm substantially level with the detecting means on the other side of the arm to the detecting means, the said member (13) projecting laterally away from the arm on the side of the arm adjacent the detecting element (14) and an upstanding member (15) being formed on the other side of the arm and in use engaging the stop.

Inventors: IIMURA KOUICHI, IIMURA, KOUICHI
Applicants: SIGMA KK, KABUSHIKI KAISHA SIGMA
Application year: 1988
Main classification: G07D1
IPC codes: G07D1