COIN HANDLING MECHANISM FOR VENDING MACHINES

Abstract: A coin handling mechanism for vending machines has a coin validation sensor (12), a coin accepting gate (20), a plurality of coin distributing gates (21, 22, 23) and a cutter (31a) for cutting a string (70) which is suspending a deposited coin (85). When a coin (85) suspended by a string (70) is deposited in a coin inlet (10) of the mechanism, the string (70) is caught by the coin accepting gate (20) before the coin (85) reaches the coin distributing gates (21, 22, 23). When the string (70) is then pulled towards the coin inlet (10) in an attempt to remove the coin (85), the string (70) is cut by the cutter (31a). The coin (85) with the cut string portion attached thereto then falls down in the machine. In this situation the coin distributing gates (21, 22, 23) are automatically oriented to form a coin path communicating with a cash box (73) therebelow. The coin (85) with the cut string thus falls to the cash box (73), thereby preventing it from being paid or given to a customer.

Description: The present invention relates to a coin handling mechanism which is used in vending machines and the like, and more particularly to a coin handling mechanism which has a mechanism for preventing theft or mischief such as when the deposited coin is suspended by a string. The conventional coin handling mechanism for a vending machine, which has means for preventing the mischief of depositing a coin suspended by a string, is constructed, for example, as shown herein in FIG. 5 (Japanese Utility Model Publication SHO 59-40968). The mechanism has a coin inlet 1, a coin guide path 2 for guiding a deposited coin, coin paths 4a and 4b connected to the coin guide path, a distributing gate 5 operated by a solenoid 6 and distributing the deposited coin to one of coin paths 4a and 4b, and a cutter 3 provided in the coin guide path. In such a mechanism, if a coin 8 suspended by a string 7 is deposited, the string is cut by cutter 3 when the string is pulled upward to retrieve the coin from coin inlet 1. Then, coin 8 with the cut string is sent to a coin retaining tube (not shown) through coin paths 4a or 4b. Although the mischief of pulling string 7 and returning coin 8 can be prevented by cutting the string in the mechanism, the coin with the cut attached string can be given to a customer as change because the coin with the cut string is sent to and retained in a coin tube in a change mechanism. The coin with the attached string given to a customer as change gives a bad impression to the customer. Moreover, a hole is often intentionally formed in a coin used for the mischief for the purpose of threading a string through it, and in such a case, the coin is often not commercially acceptable. Furthermore, there is the problem that a coin with a cut string tends to be caught in a coin path or a coin tube if the coin is led into the coin path or the coin tube for coins smaller than the deposited coin. It would be desirable to provide a coin handling mechanism for a vending machine which can channel a coin with a cut string attached thereto into a cash box, thereby preventing the coin from being paid or given to a customer as change. US-A-4437558 discloses a coin handling mechanism for a vending machine comprising a coin validation sensor which tests the authenticity of and detects the type of a deposited coin, a coin accepting gate which distributes the deposited coin to one of an acceptable coin path and an unacceptable coin path according to the authenticity of the coin as determined by said coin validation sensor, and wherein said coin accepting gate closes the acceptable coin path after the period of time required for an acceptable coin to pass through the coin accepting gate; the arrangement being such that if the deposited coin is suspended by a suspender, such as a string, the coin accepting gate holds the suspender by the closing action of the coin accepting gate, and cutting means are provided for cutting the suspender held by said accepting gate. According to the present invention, a coin handling mechanism is characterised in that said cutting means is provided upstream of said coin accepting gate; said mechanism further including a plurality of coin distributing gates positioned downstream of said coin accepting gate and arranged to distribute coins accepted by said coin accepting gate to one of the plurality of coin paths provided according to the types of coins to be accepted and a coin path communicating with a cash box, and each of the coin distributing gates operates such that the coin path communicating with the cash box is formed, after the period of time required for an acceptable coin to pass through said each distributing gate has passed. In the coin handling mechanism, a deposited coin determined to be an acceptable coin by the coin validation sensor is accepted to the acceptable coin path by the coin accepting gate. The coin accepting gate immediately shuts after the deposited coin passes through the gate. If the deposited coin is a coin suspended by a suspender, the suspender is held by the closed coin accepting gate, thereby temporarily stopping the further progress of the coin. During this stoppage, the preset time of each coin distributing gate expires, and each coin distributing gate is operated in the direction wherein the coin path communicating with the cash box can be formed. When the suspender being held by the closed coin accepting gate is pulled toward the coin inlet, the suspender is cut by the cutting means and the coin with the cut suspender becomes free. Although the coin with the cut suspender is led downstream of the coin accepting gate, the coin is guided along the coin path communicating with the cash box and sent to the cash box because each coin distributing gate has been already operated in the direction forming the coin path communicating with the cash box. This operation is performed upon any type of accepted coin suspended by a suspender, and the coin with a cut suspender is consistently sent to the cash box. Accordingly, the coin with the cut suspender attached thereto is never paid or given to a customer as change. A preferred exemplary embodiment of the invention will now be described with reference to the accompanying drawings which are given by way of example only, and thus are not intended to limit the present invention, and in which: FIG. 1 is a schematic perspective elevational view of a coin handling mechanism according to an embodiment of the present invention; FIG. 2 is an enlarged partial vertical sectional view of the coin handling mechanism shown in FIG. 1; FIG. 3 is an enlarged partial vertical sectional view of the coin handling mechanism shown in FIG. 1, showing coin paths from coin distributing gates; FIG. 4A is an enlarged partial elevational sectional view of the coin handling mechanism shown in FIG. 1, showing the path of an unacceptable coin; FIG. 4B is an enlarged partial elevational sectional view of the coin handling mechanism shown in FIG. 1, showing the paths of a first coin such as a ten monetary unit (eg. cents, yen, etc.) coin and a second different coin such as a fifty unit coin; FIG. 4C is an enlarged partial elevational sectional view of the coin handling mechanism shown in FIG. 1, showing the path of a third coin such as a one hundred unit coin; FIG. 4D is an enlarged partial rear-side sectional view of the coin handling mechanism shown in FIG. 1, showing the path of a fourth coin such as a five hundred unit coin; and FIG. 5 is a vertical sectional view of a conventional coin handling mechanism. FIGS. 1-3 and 4A-4D illustrate a coin handling mechanism for a vending machine according to an embodiment of the present invention. The coin handling mechanism has on the upper portion thereof a coin inlet 10 into which coins are deposited, a coin chute 11 for guiding the deposited coins and a coin validation sensor 12 which tests the authenticity of the deposited coin and detects or determines the type of the deposited coin . A coin accepting gate 20 is provided on a portion of the exit side of coin chute 11. Coin accepting gate 20 distributes a deposited coin to either an acceptable coin path 31 or an unacceptable coin path 30 in accordance with the authenticity of the deposited coin tested by coin validation sensor 12. Acceptable coin path 31 is formed between opened coin accepting gate 20 and a base plate 13 as shown in FIG. 2. Unacceptable coin path 30 communicates with a discharge path 40 for unacceptable coins as shown in FIG. 1. Coin distributing gates 21 and 22 are arranged in the vertical direction downstream of coin accepting gate 20, and another coin distributing gate 23 is positioned downstream of the coin distributing gate 21. As shown in FIG. 2, a cover plate 14 is provided spaced a distance from base plate 13 and a partition 15 is provided between the base plate and the cover plate. Coin distributing gate 21 is positioned above partition 15 and the gate opens one of a coin path 32 for 100 unit (yen) coins and 500 unit coins and a coin path 33 for 10 unit coins and 50 unit coins by the swinging action of the gate. Coin distributing gate 22 has a through hole 22′ extending in the vertical direction and the gate opens one of a coin path 36 for 50 unit coins and a coin path 37 for 100 unit coins through the hole by sliding the gate. Coin path 32 communicates directly with a coin path 34 for 500 unit coins and coin path 33 communicates directly with a coin path 35 for 10 unit coins. Coin path 34 communicates with a coin tube 41 for 500 unit coins, coin path 35 communicates with a coin tube 42 for 10 unit coins, coin path 36 communicates with a coin tube 43 for 50 unit coins and coin path 37 communicates with a coin tube 44 for 100 unit coins. Coin path 34 as a coin path for the largest coins (that is, 500 unit coins) also can communicate a cash box 73 via a coin path 71, which diverges from the coin path 34, and a coin path 38. Therefore, parts of coin path 34, coin path 71 and coin path 34 constitute a coin path communicating with cash box 73. Namely, the part of coin path 34 for 500 unit coins is common to a part of the coin path communicating with cash box 73. Coin distributing gate 23 is disposed on the divergent portion of the common path and the gate distributes a coin led from the common path to either the coin path communicating with coin tube 41 or with coin path 71. Coin accepting gate 20 and coin distributing gates 21, 22 and 23 are driven by solenoids 20a, 21a, 22a and 23a, respectively. Each of solenoids 20a, 21a, 22a and 23a is controlled to the "on" or "off" states thereof according to the signal of the authenticity and type of a deposited coin from coin validation sensor 12. When solenoid 20a is in its off" state, coin accepting gate 20 opens unacceptable coin path 30, and when the solenoid is in its "on" state, the gate opens acceptable coin path 31. When solenoid 21a is in its "off" state, coin distributing gate 21 opens coin path 32 for 100 unit coins and 500 unit coins, and when the solenoid is in its "on" state, the gate opens coin path 33 for 10 unit coins and 50 unit coins. When solenoid 22a is in its "off" state, coin distributing gate 22 opens coin path 36 for 50 unit coins, and when the solenoid is in its "on" state, the gate opens coin path 37 for 100 unit coins. When solenoid 23a is in its "off" state, coin distributing gate 23 opens coin path 71 communicating with cash box 73 through coin path 38, and when the solenoid is in its "on" state, the gate opens the coin path communicating with coin tube 41. Coin accepting gate 20 is controlled so as to close acceptable coin path 31 immediately following a period of time required for an acceptable coin to pass through the gate, by setting the "on" time of solenoid 20a to the above period of time. Similarly, each coin distributing gate 21, 22 or 23 is controlled so as to operate in the direction wherein the coin path communicating with cash box 73 can be formed, immediately following a period of time required for an acceptable coin to pass through the gate, by the operation of each of the corresponding solenoid 21a, 22a or 23a. In this embodiment, all of solenoids 21a, 22a and 23a turn off after the respective preset periods of time for an acceptable coin to pass through the respective gates. Moreover, in this embodiment, coin distributing gate 21 is spaced from coin accepting gate 20 so that the coin accepting gate closes acceptable coin path 31 before an acceptable coin which has passed the coin accepting gate reaches the coin distributing gate. A stepped wall 31a having a sharp edge is formed on base plate 13 at a position upstream of coin accepting gate 20, as a means for cutting a suspender, such as a string 70, which is suspending a coin. Coin accepting gate 20 can hold string 70 by the closing action thereof, in a case in which a deposited coin suspended by the string, as shown in FIG. 2. Stepped wall 31a is constructed so as to cut string 70 when the string is returned toward coin inlet 10. This cutting means may be constructed by a cutter which is provided upstream of coin accepting gate 20. In this embodiment, overflow sensors 41a, 42a, 43a and 44a are attached on the upper portions of coin tubes 41, 42, 43 and 44, respectively. Each overflow sensor detects whether the corresponding coin tube is filled with coins. Coin paths 34, 71 and 38 communicating with cash box 73 also constitute a coin path for overflow coins in this embodiment. A coin path 72 diverges from coin path 36 for 50 unit coins at a position above coin tube 43. At the divergent portion, a distributing plate (not shown) having a hole or a slit for a coin to be distributed is provided. Coin path 72 is connected to coin path 38 and a 10 unit coin or a 100 unit coin misdirected to coin path 36 can be sent to coin path 38 through coin path 72. Further, auxiliary coin tubes 45 and 46 retaining coins for change are provided in the mechanism. Coin tubes 41-44 and auxiliary coin tubes 45 and 46 are connected to a change return mechanism 60 for returning change to the customer. Furthermore, a coin sensor 50, which can detect the passage of an acceptable coin through acceptable coin path 31, is provided on base plate 13 at a position facing coin accepting gate 20. Coin sensor 50 sends the signal of detecting the passage of an acceptable coin to a goods delivering mechanism (not shown) for delivering the required goods to a customer. In the above coin handling mechanism, a coin deposited into coin inlet 10 is tested for the authenticity and type thereof by coin validation sensor 12 during passage through coin chute 11. Coin accepting gate 20 and coin distributing gates 21, 22 and 23 are controlled according to the signal from coin validation sensor 12 and the signals from overflow sensors 41a-44a. Table 1 shows the modes of operation of the gates 20-23. In Table 1, mark "o" shows the "on" state of a solenoid and mark "x" shows the "off" state of a solenoid. Unacceptable coin 500 unit coin 100 unit coin 50 unit coin 10 unit coin Overflow coin Gate 20 x o o o o o Gate 21 x x x o o x Gate 22 x x o x o x Gate 23 x o x x x x Coin path 30 34 37 36 35 34, 71 38 Coin tube 40 41 44 43 42 Cash box As shown in Table 1, since no distributing gate operation when an unacceptable coin 80 (FIG. 4A) is deposited, the coin is sent to coin path 30 and falls to a coin return opening through discharge path 40. Acceptable coins are distributed as follows. When the deposited coin is a 500 unit coin 84 (FIG. 4D), solenoids 20a and 23a are placed in their "on" states and the coin is led into coin tube 41 through acceptable coin path 31, coin path 32 for 100 unit and 500 unit coins and coin path 34 for 500 unit coins. When the deposited coin is a 100 unit coin 83 (FIG. 4C), solenoids 20a and 22a are placed in their "on" states and the coin is led into coin tube 44 through acceptable coin path 31, coin path 32 and coin path 37 for 100 unit coins. When the deposited coin is a 50 unit coin 82 (FIG. 4B), solenoids 20a and 21a are placed in their "on" states and the coin is led into coin tube 43 through acceptable coin path 31, coin path 33 for 10 unit and 50 unit coins and coin path 36 for 50 unit coins. When the deposited coin is a 10 unit coin 81 (FIG. 4B), solenoids 20a, 21a and 22a are placed in their "on" states and the coin is led into coin tube 42 through acceptable coin path 31, coin path 33 and coin path 35 for 10 unit coins. When one of coin tubes 41-44 is filled with coins, the corresponding overflow sensor detects this condition and the coin path communicating with the coin tube is switched to the overflow path communicating to cash box 73. In this state, only solenoid 20a is switched on. For instance, when coin tube 42 is filled with 10 unit coins, overflow sensor 42a detects this condition and coin path 35 is switched to coin path 34 as a coin path for overflow 10 unit coins. In this condition, only coin accepting gate 20 opens, and the next 10 unit coin is sent to cash box 73 through coin paths 34, 71 and 38. With other coin tubes 41, 43 and 44, the procedure is similar. When a deposited coin is a coin 85 suspended by string 70 as shown in FIG. 2, and the coin is an acceptable coin, solenoid 20a turns on and acceptable coin path 31 opens. Although coin 85 enters into and passes through acceptable coin path 31, solenoid 20a turns off and coin accepting gate 20 closes the acceptable coin path immediately after the coin has passed through a position of the gate. At the time, string 70 is caught and held between shut coin accepting gate 20 and base plate 13 as shown in FIG. 2. Coin 85 is suspended by the held string 70 at a position before the coin reaches coin distributing gate 21, and the coin is prevented from progressing further. The preset time for the operation of coin distributing gate 21 then expires, solenoid 21a turns off if it was in its "on" state and it is kept off if it was already in its "off" state. Similarly, each of solenoids 22a and 23a turns off after the preset time required for an acceptable coin to pass through each corresponding gate. In other words, coin distributing gate 21 opens coin path 32, gate 22 closes coin path 37 and gate 23 opens coin path 71. Therefore, a coin path communicating with cash box 73 is formed by coin path 32, coin path 34, coin path 71 and coin path 38. When string 70, which has been stopped by coin accepting gate 20, is pulled upward, the string is cut by the edge of stepped wall 31a, and coin 85 with a cut string portion attached thereto falls down. At that time, however, since the preset time for solenoid 21a has already expired, coin distributing gate 21 is opening coin path 32. Coin 85 with the cut string falls into coin path 32. When coin 85 reaches coin path 32, coin path 37 is closed because the preset time for solenoid 22a has already expired, and thus coin 85 is led into coin path 34. Similarly, when coin 85 reaches the position of coin distributing gate 23, the preset time for solenoid 23a has already expired. Therefore, coin path 71 is open and coin 85 is sent to cash box 73 through coin paths 71 and 38. Thus coin 85 with the cut string can be sent into cash box 73. Since a coin with a cut string is not sent to any coin tube, the coin can be prevented from being paid or given to a customer through change return mechanism 60. Moreover, since a coin with a cut string is sent to cash box 73 through coin path 34 which is for the largest coins (500 unit coins), that is, through a coin path having a large width, the coin can be smoothly sent even though the coin has the cut string attached to it.

Claims: A coin handling mechanism for a vending machine comprising a coin validation sensor (12) which tests the authenticity of and detects the type of a deposited coin, a coin accepting gate (20) which distributes the deposited coin to one of an acceptable coin path (31) and an unacceptable coin path (30) according to the authenticity of the coin as determined by said coin validation sensor (12), and wherein said coin accepting gate (20) closes the acceptable coin path after the period of time required for an acceptable coin to pass through the coin accepting gate (20); the arrangement being such that if the deposited coin is suspended by a suspender, such as a string (70), the coin accepting gate (20) holds the suspender by the closing action of the coin accepting gate (20), and cutting means (31a) are provided for cutting the suspender held by said accepting gate (20); characterised in that said cutting means (31a) is provided upstream of said coin accepting gate (20); said mechanism further including a plurality of coin distributing gates (21, 22, 23) positioned downstream of said coin accepting gate (20) and arranged to distribute coins accepted by said coin accepting gate (20) to one of the plurality of coin paths (34, 35, 36, 37) provided according to the types of coins to be accepted and a coin path communicating with a cash box (73), and each of the coin distributing gates (21, 22, 23) operates such that the coin path communicating with the cash box is formed, after the period of time required for an acceptable coin to pass through said each distributing gate (21, 22, 23) has passed. The mechanism according to claim 1, wherein a first distributing gate (21) of said plurality of distributing gates (21, 22,23) is spaced from said coin accepting gate (20) so that said coin accepting gate (20) closes said acceptable coin path (31) before an acceptable coin which has passed through said coin accepting gate (20) reaches the first distributing gate (21). The mechanism according to any preceding claims, wherein a part of one (34) of said plurality of coin paths (34, 35, 36, 37) is common to a part of said coin path communicating with said cash box (73) and one (23) of said plurality of coin distributing gates (21, 22, 23) is provided on a divergent portion of said common path. The mechanism according to claim 3, wherein said one of said plurality of coin paths (34, 35, 36, 37) constituting said common path is a coin path (34) for the largest coins (84) to be accepted. The mechanism according to any preceding claim, wherein said cutting means comprises a stepped wall (31a) having a sharp edge. The mechanism according to any preceding claim, wherein said coin accepting gate (20) and said coin distributing gates (21, 22, 23) are both operated by solenoids. The mechanism according to any preceding claim, wherein said plurality of coin paths (34, 35, 36, 37) communicate with corresponding coin tubes (41, 42, 43, 44). The mechanism according to any preceding claim, wherein said unacceptable coin path (30) communicates with a discharge path (40) for unacceptable coins.

Inventors: SATOH, NAOTO
Applicants: SANDEN CORPORATION
Application year: 1988
Main classification: G07F1
IPC codes: G07D9, G07F1, G07F5