Coin feeding device with an escalator

Abstract: A coin stored in a hopper (1) is delivered one by one towards an outlet of a hollow cylindrical case (3) on a base plate (2) by means of coin feeding arms (9) of a coin feeding disc (4) having coin receiving holes (8). The coin feeding disc (4) is rotated in the hollow cylindrical case(3). The coin is further delivered out of the hollow cylindrical case (3) by means of coin feeding wings (12) of a scraper (13) rotated on the base plate (2) outside of the hollow cylindrical case (3). An upright coin carrier duct (17) is disposed, with an opening at the lower end thereof, on the inclined base plate (2). A coin guide (21) is disposed along a coin transporting path (15) where a coin is delivered by means of the coin feeding wings (12) of the scraper (13). The coin engaged with the coin guide (21) is pushed towards the lower end port of the coin carrier duct (17) by means of a convex portion formed at the leading side of each of the coin feeding wings (12).

Description: This invention relates to a coin feeding device for feeding a coin such as a money coin or a token in a coin exchanger, a vending machine or a coin operated gaming machine and, more particularly, this invention relates to a coin feeding device with an escalator. Such a coin feeding device comprises a hopper where a supply of coins are stored in bulk. The coin is delivered one by one from the hopper to a coin receiving hole opened at an upper portion of the device by means of rotation of a rotary disc through an upright coin carrier duct, which in general is called as an escalator. Conventionally, such a coin feeding device with an escalator is well known as disclosed in, for example, U.S. Patent No. 4,592,377. However, in a conventional well-known coin feeding device with the escalator, an outlet chute projected from one side of the hopper is connected to the lower end of an upright coin carrier duct. Accordingly, it requires some means for supporting the coin carrier duct in an upright state, resulting in a device of an enlarged dimension. The enlarged device disposed in, for example, a vertical coin exchanger has a disadvantage that it makes the coin exchanger wide and deep. The present invention is directed to provide a small coin feeding device with an escalator. Thus, a primary object of the present invention is to provide a small coin feeding device with an escalator substantially accompanying with no increase of the width and the depth of a small coin feeding device by means of improving the latter disclosed in, for example, Japanese Examined Patent Publication No. 36040/1988, (JP-A-61 281 385) disclosing the features of the preamble of claim 1. EP-A-0 469 886 discloses a coin conveyor including an escalator, whereby a coin carrier duct for delivering a coin extends substantially vertically upwardly. According to the present invention, a coin sorting device comprises the features of claim 1. Claims 2-5 define preferred embodiments. Other objects and advantageous of the present invention will become apparent from the following description taken together with the drawing in which: Fig. 1 is a schematical side view of a coin feeding device with an escalator according to the present invention, where a part of which is illustrated as a cross section; Fig. 2 is a schematical plan view of the coin feeding device illustrated in Fig. 1 except for a hopper; and Fig. 3 is a cross sectional view taken on the line III-III in Fig. 2. In Fig. 1, reference numeral 1 represents a hopper where a supply of coins are stored in bulk. The lower end of the hopper 1 is fastened to the upper end of a hollow cylindrical case 3. The hollow cylindrical case 3 is removably attached to an inclined base plate 2 in a well-known manner. The inclined base plate 2 is secured on a platform 20. In the hollow cylindrical case 3, a coin feeding disc 4 is rotatably attached to the inclined base plate 2. A disc boss is secured to a rotary shaft 7 driven by a drive motor 5 through a transmission 6. Thus, the coin feeding disc 4 is rotated in synchronism with the rotary shaft 7 in the hollow cylindrical case 3. In accordance with the above mentioned construction of the present invention, each coin delivered from the hopper 1 to the hollow cylindrical case 3 is further transferred to one of coin receiving holes 8. As will later be described more detail, the coin receiving holes 8 are formed on the coin feeding disc 4 which is rotatable in the hollow cylindrical case 3. The coin received in the coin receiving hole 8 is transferred onto the base plate 2 through the hollow cylindrical case 3 by means of a coin feeding arm 9 projecting from the back surface of the coin feeding disc 4. A plurality of coin receiving holes 8 are formed on the coin feeding disc 4 spaced apart from each other along the circumference of the disc. Each of the coin receiving holes 8 has an acceptable size for the coin and penetrates through the coin feeding disc 4. The coin feeding arm 9 projects from the back surface of the coin feeding disc 4 at a position between the adjacent coin receiving holes 8. The coin feeding arm 9 projects by an amount for holding one coin and is extended to a periphery of a circle formed by connecting approximately the center of each coin receiving hole 8. Thus, the coin received in the coin receiving hole 8 is transferred on the base plate 2 through the hollow cylindrical case 3 by means of the coin feeding arm 9 upon rotation of the coin feeding disc 4. The coin feeding device further comprises a scraper 13 which is rotated in synchronism with the coin feeding disc 4. When the coin feeding arm 9 is rotated, a feeding wing 12 of the scraper 13 is interposed between the back surface of the coin feeding disc 4 and the base plate 2 at a position between the adjacent coin receiving holes 8 by moving from the external position of the hollow cylindrical case 3 through an opening portion 10a formed at the lower portion of the peripheral wall of the hollow cylindrical case 3. In this event, the feeding wing 12 of the scraper 13 is positioned beneath the coin feeding disc 4 and between the adjacent coin receiving holes 8. Therefore, the scraper 13 can be smoothly rotated in synchronism with the coin feeding disc 4 without being interfered by the coin in the coin receiving hole 8. Further rotation of the coin feeding disc 4 makes the feeding wing 12 of the scraper 13 engage with a tailing edge of the coin A transferred on the base plate 2 through the coin feeding arm 9. Thus, the coin A is forced onto the base plate 2 by means of the coin feeding arm 9 and the feeding wing 12. An outlet port 10 opens on the lower portion of the peripheral surface of the hollow cylindrical case 3 at one side thereof. An outlet guiding member 11 protrudes from the base plate 2 at the downstream of the outlet port 10 along the travel direction of the coin feeding disc 4. A coin transferred onto the base plate 2 by the coin feeding arm 9 is pushed to the outlet guiding member 11, thereby the travel direction of the coin is forced to deviate towards the outlet port 10. In other words, the coin A transferred on the base plate 2 contacts the outlet guiding member 11 located at the downstream side of an outlet port 10, thereby the travel direction of the coin A is forced to deviate towards the output port 10. On the base plate 2, the scraper 13 is disposed beside the coin feeding disc 4 at the side close to the outlet port 10 of the hollow cylindrical case 3. The scraper comprises feeding wings 12 extending outwardly radially therefrom. The feeding wings 12 are equal in number to the coin receiving holes 8 of the coin feeding disc 4. The scraper 13 is disposed such that a tip portion of each feeding wing 12 travels through the opening 10a being continued from the outlet port 10 beneath the back surface of the coin feeding disc 4 in the hollow cylindrical case 3 and projected to a position between the adjacent coin receiving holes 8, 8. The scraper 13 is properly secured to a scraper rotary shaft 14 at the center thereof. The scraper rotary shaft 14 is rotated in synchronism with the rotary shaft 7 of the coin feeding disc 4 by the drive motor 5 through the transmission 6. The relative positions of the coin feeding arm 9 and the feeding wing 12 are determined such that each coin feeding arm 9 of the coin feeding disc 4 and each feeding wing 12 of the scraper 13 are synchronously rotated at the outlet port 10 of the hollow cylindrical case 3 in cooporation with each other to push the coin towards the outlet guiding member 11. As described above, the coin A is transferred on the base plate 2 towards the outlet port 10 by means of the feeding wing 12 of the scraper 13. Further, the coin is transferred along a coin transporting path 15 by means of the feeding wing 12 of the rotating scraper 13. The coin transporting path 15 has a configuration of an approximately circular arc formed about a rotary shaft 14 of the scraper 13. The coin A is then pushed to guide rollers 18 and 19 as illustrated in Fig. 2. Once the coin is pushed to and in contact with the guide rollers 18 and 19, the coin is not further transported along the coin transporting path 15 in the circumferential direction of the scraper 13. Thus, the coin A pushed to the guide rollers 18 and 19 is transferred towards a lower end port 16 of a coin carrier duct 17 standing in approximately vertical or upright state. More particularly, the coin A is delivered due to a convex portion of the feeding wing 12 of the scraper 13. The convex portion is formed on the leading side 12a to the rotational direction. The coin is fed to the coin carrier duct 17 one by one and is thrown out of an upper outlet port (not shown). On the base plate 2, a guide 21 is disposed to guide a coin along the coin transporting path 15 of approximately circular arc about the rotary shaft 14 by means of feeding wing 12 of the scraper 13. As mentioned above, any adequate guide roller, such as a rubber roller, is disposed at the end of the coin transporting path 15 as the guide rollers 18 and 19. The guide rollers 18 and 19 serve to interrupt the travel of the coin transferred between the feeding wings 12 of the scraper 13 in the circumferential direction of the scraper. As a result, the travel direction of the coin is forced to deviate. The well-known coin carrier duct 17 (called in general as an escalator) is uprightly secured at the extended portion of the coin transporting path 15. The coin carrier duct 17 comprises a lower end port 16. The coin is transferred towards the lower end port 16 of the coin carrier duct 17 by means of the guide rollers 18 and 19 and the convex portion 12a of the feeding wing 12 of the scraper 13. As shown in Fig. 2, guide rollers 19 are disposed with the coin guide 18 in order to guide the coin. One of the exemplified guide rollers 18 and 19 are shown in Fig. 3. In the embodiment illustrated in Fig. 3, the guide rollers 18 and 19 are formed with tapered rollers. Each of the taper rollers has a downwardly tapered surface 23. A central shaft 25 is passing through a central hole 24 of the tapered roller and is also passing through a guide hole 26 penetrating through the base plate 2. To the end of the central shaft 25, a slide shoe 27 is attached, thereby the tapered roller enables movement in the transverse direction of the coin transporting path 15. The spring force is exerted to draw the slide shoes 27 of a pair of tapered rollers with each other by means of a coin spring 28. The coin is interposed between the tapered rollers 18 and 19 against the spring force. As a result, the coin is forced to the base plate 2 with the help of the downwardly tapered surfaces 23 to avoid rising up of the coin. The guide rollers 18 and 19 having the above mentioned construction make it possible to feed coins smoothly along a curved path required for forcing the travel direction of the coin to the coin carrier vertically standing from the inclined base plate 2. With this construction, it is possible to feed coins even in a vertical coin sorting device with the minimum radius of curvature of the curved path for the coin. Further, it is possible to reduce the width and depth of the coin sorting device with the escalator having the coin carrier duct vertically extending from the device as compared with the conventional one. As a result, it becomes possible to provide, for example, a vertical coin exchanger having remarkably small width and depth.

Claims: A coin feeding device comprising a base plate (2) having an upper end portion where a coin carrier duct (17) for delivering a coin is arranged; scraper means (13) having a rotational body rotatably supported on the base plate and coin feeding wings (12) extending radially outwardly from the rotational body, each of the coin feeding wings being for use in forcing a coin to the upper end portion upon rotation of the rotational body; and coin guiding means (21) arranged at the upper end portion for guiding the coin forced to the upper end portion by the coin feeding wings to the coin carrier duct; characterised in that the coin carrier duct (17) extends substantially vertically upwardly; and in that the leading edges (12a) of the coin feeding wings (12) in the rotational direction of the rotational body (13) are convex so as to urge a coin radially outwardly to the coin carrier duct. A device according to claim 1, further comprising a rotary disc (4) disposed on the base plate (2) at a distance corresponding to the thickness of a coin; a guide hole (8) through the rotary disc for guiding a coin onto the base plate; and a feeding arm (9) positioned between the base plate and the rotary disc for feeding the coin in the guide hole towards the scraper means (13), the scraper means being arranged to receive the coin from the feeding arm. A device according to claim 1 or claim 2, wherein the coin guiding means (21) is disposed at the upper end portion and comprises a pair of opposed spaced shaft portions (25) disposed at a distance from each other substantially corresponding to a diameter of a coin, and a roller means (18,19) rotatably disposed on respective ones of the shaft portions, the roller means being arranged to prevent the coin from rising. A device according to claim 3, wherein each of the roller means (18,19) has a tapered surface (23) for forcing the coin passing between the roller means against the base plate (2). A device according to claim 3 or claim 4, wherein the pair of shaft portions (25) are disposed at the upper end portion with the distance therebetween being variable.

Inventors: SUZUKAWA YORIO, SUZUKAWA, YORIO, Suzukawa, Yorio, c/o Asahi Seiko K.K.
Applicants: ASAHI SEIKO CO LTD, ASAHI SEIKO KABUSHIKI KAISHA
Application year: 1992
Main classification: G07D1
IPC codes: G07D9, G07D1