Patent Publication Number: US-2023141040-A1

Title: Coin hopper, rotating body of coin hopper, and coin processing device

Description:
TECHNICAL FIELD 
     The present invention relates to a coin hopper that feeds coins one by one, a rotating body used for the coin hopper, and a coin processing device equipped with the coin hopper. 
     BACKGROUND ART 
     There is known a coin hopper that includes a container for storing a plurality of coins and that discharges the coins stored in the container one by one. 
     For example, a coin hopper disclosed in JP-A-2008-204156 includes a storing bowl for storing a large number of coins and a payout unit for discharging coins in the storing bowl one by one. An opening is provided in a bottom portion of the storing bowl. A rotating body is disposed on an upper surface of the payout unit so as to face the opening. The rotating body has a plurality of through holes through which coins enter. Coins entered the through holes of the rotating body are held on a flat base disposed at a back surface side of the rotating body. A pushing protrusion for pushing the coin is provided on a side surface of the through hole. Accompanying with the rotation of the rotating body, the coin is pushed by the pushing protrusion and moves on the base. A moving direction of the coin moved to a predetermined position on the base is changed by a pin of the payout unit, and the coin is discharged to an outlet passage. The coins in the storing bowl are stirred by the rotation of the rotating body. 
     The pushing protrusion comes into contact with the coin entered into the through hole, and pushes the coin in the moving direction in accordance with the rotation of the rotating body. The pushing protrusion is worn or damaged by being brought into contact with the coin. Therefore, it is considered to use a rotating body reinforced by a reinforcing material. In the rotating body, a metal plate is inserted into a resin by integral molding. Since the rotating body is reinforced by the metal plate, durability is improved. A coin hopper in consideration of such durability has been considered. 
     Further, currency in circulation issued by a nation includes coins of a plurality of denominations. Since a coin has a different diameter, thickness, material, and design for each denomination, anyone can easily identify a denomination. A coin processing device detects a characteristic of a coin and identifies a denomination of the coin. In addition, the coin processing device can store an identified coin in a container for each denomination. The coin processing device identifies a denomination of a coin, stores coins for each denomination, and pays out a stored coin as needed. The coin processing device can pay out coins of a desired amount by storing coins in a coin hopper for each denomination and controlling the coin hopper. 
     For example, a coin depositing and dispensing machine disclosed in JP-A-2017-151818 is known as an example of a coin processing device. In addition, an automatic change machine is known as an example of a coin processing device. The automatic change machine stores inserted coins for each denomination. The automatic change machine calculates a denomination and the number of coins to be discharged based on an amount of change. The automatic change machine controls a coin hopper corresponding to each denomination to discharge a coin based on the calculated denomination and the calculated number of coins. 
     A rotating body made of resin can be reduced in weight, but is inferior in durability to a rotating body made of metal. Therefore, it is considered to form a part of a rotating body with metal. One method is to use the above-described rotating body in which a metal plate is inserted into resin by integral molding. Another method is to use a rotating disk disclosed in JP-A-2003-20127. In the rotating disk, an extrusion disk having a metal pushing protrusion is fixed to a resin disk by a screw. 
     CITATION LIST 
     Patent Literature 
     Patent Literature 1: JP-A-2008-204156 
     Patent Literature 2: JP-A-2017-151818 
     Patent Literature 3: JP-A-2003-20127 
     SUMMARY OF INVENTION 
     Technical Problem 
     A rotating body in which a metal plate and resin are integrally molded is considered in the related art. In the related rotating body, a periphery of the metal plate is covered with resin, and strength of a resin layer is improved by the metal plate. A pushing protrusion for pushing a coin is reinforced by the metal plate in the resin layer. Even when the metal plate is inserted into the rotating body, an exposed portion of the resin may be damaged by being brought into contact with a coin. Depending on a damaged position of the rotating body, the rotating body may not function normally. In addition, when a foreign object other than a coin enters a container, the rotating body may come into contact with the foreign object, and may be worn or damaged. In a worst case, the rotating body cannot be used and needs to be replaced. Even when there is a problem only in a part of the integrally molded rotating body, it is necessary to replace the entire rotating body. Such a rotating body needs to be replaced even when there is a usable portion, and there is a problem that the usable portion is wasted. 
     A rotating body integrally formed of resin and metal has a problem in that the rotating body is peeled off by repeatedly applying an impact to a connection portion between the metal and the resin. Strength of the connection portion is improved by a surface treatment of a metal component or an additional processing such as complication of a shape. On the other hand, the rotating body in which the strength of the connection portion between the metal and the resin is improved has a problem in that a manufacturing process is increased, components are complicated, and time required for manufacturing the components are increased, and the like. 
     In a rotating disk in which an extrusion disk provided with a metal pushing protrusion for pushing a coin is screwed and fixed to the resin disk, the pushing protrusion is formed by bending a metal plate twice. A tip end of the pushing protrusion comes into contact with a coin and pushes the coin. Since the extrusion disk is screwed to the resin disk, a force is applied to a bent portion of the pushing protrusion when the pushing protrusion pushes a coin. Therefore, the bent portion of the pushing protrusion may be deflected and deformed. In order to sufficiently increase strength, it is necessary to use a thick metal plate, and there is a problem that the rotating disk becomes heavy. Since the pushing protrusion is formed by bending the metal plate and a tip end of the metal plate comes into contact with a coin, the coin may be damaged by an edge of the metal plate. 
     Since the extrusion disk is fixed to the resin disk by a screw, manufacturing processes and quality control such as screw tightening work and a torque control are complicated. When the screw is loosened, the extrusion disk moves relative to the resin disk, a coin may enter under the extrusion disk, and a jam may occur. 
     A coin processing device using the related coin hopper has a problem in that a coin payout malfunction occurs when a malfunction occurs in a rotating body. Therefore, it is desired to use a coin hopper having high durability. It is desired to use a coin hopper that can be easily maintained in case of a malfunction occurs. 
     Solution to Problem 
     A coin hopper according to the present invention includes a container that stores a coin, a base that supports the coin, a rotating body that is provided with a plurality of separation holes each of which is configured to hold the coin one by one, that is fixed to a rotation shaft, and that is disposed so as to face the base, and a control pin that is disposed in a conveyance path for the coin held by the rotating body, that comes into contact with the coin being conveyed, and that changes a moving direction of the coin. The coin stored in the container is conveyed to the base in a state that the coin is held in the separation holes, the coin is brought into contact with the control pin, and the coin is moved in a discharge direction. The rotating body includes a first resin rotating body made of resin, a metal rotating body in which a metal pushing piece for pushing the coin is provided for each of the separation holes, and a second resin rotating body made of resin. The metal rotating body has a first through hole. The first resin rotating body or the second resin rotating body has a positioning protrusion at a position corresponding to the first through hole. The first resin rotating body has a first contact portion, and the second resin rotating body has a second contact portion. The metal rotating body is sandwiched between the first resin rotating body and the second resin rotating body in a state that the pushing piece is exposed from the first resin rotating body. The positioning protrusion is fitted into the first through hole and restricts movement relative to the metal rotating body in a rotation direction. The first resin rotating body, the metal rotating body, and the second resin rotating body are fixed to one another by engaging the first contact portion and the second contact portion. 
     A coin processing device according to the present invention includes the coin hopper described above, and a coin receiving portion that receives and collects the coin discharged from the coin hopper. A plurality of the coin hoppers are provided, and the coin receiving portion receives the coin discharged from each of the coin hoppers. 
     A rotating body of a coin hopper according to the present invention, the coin hopper includes a container that stores a coin; a base that supports the coin; the rotating body that is provided with a plurality of separation holes each of which is configured to hold the coin one by one, that is fixed to a rotation shaft, and that is disposed so as to face the base; and a control pin that is disposed in a conveyance path for the coin held by the rotating body, that comes into contact with the coin being conveyed, and that changes a moving direction of the coin. The coin stored in the container is conveyed to the base in a state that the coin is held in the separation holes, the coin is brought into contact with the control pin, and the coin is moved in a discharge direction. The rotating body includes a first resin rotating body made of resin, a metal rotating body in which a metal pushing piece for pushing the coin is provided for each of the separation holes, and a second resin rotating body made of resin. The metal rotating body has a first through hole. The first resin rotating body or the second resin rotating body has a positioning protrusion at a position corresponding to the first through hole. The first resin rotating body has a first contact portion, and the second resin rotating body has a second contact portion. The metal rotating body is sandwiched between the first resin rotating body and the second resin rotating body in a state that the pushing piece is exposed from the first resin rotating body. The positioning protrusion is fitted into the first through hole and restricts movement relative to the metal rotating body in a rotation direction. The first resin rotating body, the metal rotating body, and the second resin rotating body are fixed to one another by engaging the first contact portion and the second contact portion. 
     Advantageous Effects of Invention 
     According to the present invention, durability of a rotating body and a coin hopper can be improved. According to the coin hopper with improved durability, it is possible to reduce or prevent a coin payout failure of a coin processing device. In addition, it is possible to provide a rotating body, a coin hopper, and a coin processing device having excellent maintainability. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG.  1    is a perspective view showing a coin hopper. 
         FIG.  2    is a perspective view showing a state that a coin container of the coin hopper is removed. 
         FIG.  3    is a perspective view showing a rotating body. 
         FIG.  4    is a view showing a back surface side of the rotating body. 
         FIG.  5    is a perspective view showing the back surface side of the rotating body. 
         FIG.  6    is a first view showing a structure of the rotating body. 
         FIG.  7    is a second view showing the structure of the rotating body. 
         FIGS.  8 A to  8 F  are views showing an operation of the coin hopper.  FIG.  8 A  is a view showing a first state of the operation of the coin hopper.  FIG.  8 B  is a view showing a second state of the operation of the coin hopper.  FIG.  8 C  is a view showing a third state of the operation of the coin hopper.  FIG.  8 D  is a view showing a fourth state of the operation of the coin hopper.  FIG.  8 E  is a view showing a fifth state of the operation of the coin hopper. 
         FIG.  8 F  is a view showing a sixth state of the operation of the coin hopper. 
         FIG.  9    is a perspective view showing an example of a coin processing device. 
         FIG.  10    is a perspective view showing an example of a second rotating body. 
         FIG.  11    is a first view showing a structure of an example of the second rotating body. 
         FIG.  12    is a second view showing a structure of an example of the second rotating body. 
         FIG.  13    is a third view showing a structure of an example of the second rotating body. 
         FIG.  14    is a perspective view showing a back surface side of an example of the second rotating body. 
         FIG.  15    is a top view showing an example of a third rotating body. 
         FIG.  16    is a first view showing a structure of an example of the third rotating body. 
         FIG.  17    is a second view showing a structure of an example of the third rotating body. 
         FIG.  18    is a perspective view showing a back surface side of an example of the third rotating body. 
         FIG.  19    is a first view showing a structure of an example of a fourth rotating body. 
         FIG.  20    is a second view showing a structure of an example of the fourth rotating body. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The drawings schematically show the present invention to an extent that the present invention can be sufficiently understood. Therefore, the present invention is not limited to the illustrated examples. In the drawings, common components and similar components are denoted by the same reference numerals, and redundant description thereof will be omitted. 
     First, a coin hopper will be described with reference to  FIG.  1   .  FIG.  1    is a perspective view showing a coin hopper. 
     The coin hopper  1  includes a container  2  that stores coins  10  and a main body  3  that separates and pays out the coins  10  one by one. The container  2  can be attached to and detached from the main body  3 . A guide portion  8  that is a substantially circular opening portion is provided at a lower portion of the container  2 . A rotating body  5  is provided at an upper portion of the main body  3 . The guide portion  8  is disposed along an outer periphery of the rotating body  5 , and guides the coins  10  to be stacked on the rotating body  5 . 
     The rotating body  5  is provided with a plurality of separation holes  6 . The separation holes  6  are through holes that pass through the front and back of the rotating body  5 . The coin  10  enters the separation hole  6  and the rotating body  5  causes the coin  10  to slide on a base  7 . A control pin is provided at a predetermined position of the base  7 . A course of the coin  10  that comes into contact with the control pin is changed toward a payout opening  4 , and the coin  10  is discharged from the payout opening  4 . 
     The flat base  7  is provided at an upper portion of the main body  3 , and the rotating body  5  rotates above the base  7 . The guide portion  8  of the container  2  is disposed along the outer periphery of the rotating body  5 . The rotating body  5  faces the opening of the guide portion  8 . The base  7  is inclined such that one side of the base  7  where the payout opening  4  is disposed is higher in a vertical direction than an opposite side of the base  7 . Since the base  7  is inclined, the coins  10  are likely to gather on a lower side of the container  2 . When the rotating body  5  passes below the stacked coins  10 , the coins  10  enters the separation holes  6 . The coins  10  are conveyed to the payout opening  4  by the rotating body  5 . 
     In this manner, the coin hopper  1  inserts the coins  10  stored in the container  2  into the separation holes  6  of the rotating body  5  one by one, carries the coins  10  to the payout opening  4 , and discharges the coins  10 . 
     The coins  10  have different elements such as size, material, and design for each denomination. A coin processing device is mounted with the coin hoppers  1  for each predetermined denomination at predetermined positions. For this purpose, the coin hopper  1  includes identification holes  9  corresponding to denominations respectively. In the coin processing device, protrusions corresponding to the identification holes  9  are provided at predetermined positions. Each of the coin hoppers  1  having the corresponding identification hole  9  is set at a predetermined position of the coin processing device. 
     The coin hopper  1  will be described in more detail.  FIG.  2    is a perspective view showing a state that the coin container of the coin hopper is removed. 
     A motor  11  that drives the rotating body  5  is disposed in the coin hopper  1 . The rotation of the motor  11  is controlled by a control circuit (not shown). A gear (not shown) that connects the motor  11  and a rotation shaft (not shown) to which the rotating body  5  is fixed is disposed inside the main body  3 . The rotation shaft passes through a through hole provided in the base  7 . The rotating body  5  is fixed to the rotation shaft that protrudes from the base  7 . A stirring portion  12  is a protrusion disposed at a rotation center of the rotating body  5 , and stirs the coins  10  so that the coins  10  do not continue to stay at a deviated position. A mechanism for fixing the rotating body  5  to the rotation shaft is provided inside the stirring portion  12 . Since a portion of the rotating body  5  fixed to the rotation shaft is made of metal, strength can be improved. For example, the stirring portion  12  may be made of metal. The rotating body  5  is provided with stirring blades  18 . The stirring blade  18  is a protrusion provided on a front surface of the rotating body  5 . The stacked coins  10  are stirred by the stirring blades  18 . The stirring blades  18  are arranged radially from the center of the rotating body  5 . In order to enhance stirring performance, concave portions are provided between adjacent stirring blades  18 , and the front surface of the rotating body  5  is complicated. 
     Unevenness of the front surface of the rotating body  5  enables the rotating body  5  to effectively stir the stacked coins  10 , and it is easy to cause the coins  10  to enter the separation hole  6 . Therefore, the rotating body  5  is thick. In order to reduce a weight of the rotating body  5 , a part of the rotating body  5  is formed by plastic and a part of the rotating body  5  is formed by metal. The rotating body  5  can be reduced in weight while maintaining strength. Since a portion of the rotating body  5  that comes into contact with the coins  10  is made of metal, the rotating body  5  can be prevented from being worn or damaged due to the contact with the coins  10 . 
     The rotating body  5  rotates counterclockwise. A groove that avoids a control pin  13  is provided on a back surface side of the rotating body  5 . Pushing pieces for pushing the coins  10  are disposed on the back surface side of the rotating body  5 . In addition, a groove is provided between an outer peripheral portion of the rotating body  5  and each of the separation holes  6 , and enables the coin  10  to pass through the groove. The coin  10  that entered the separation hole  6  comes into contact with the control pin  13  and is guided toward the payout opening  4 . The coin  10  enters between a fixed roller  15  and a moving roller  16  while being pressed. The moving roller  16  is biased in a direction toward the fixed roller  15 . When more than half of the coin  10  enters between the fixed roller  15  and the moving roller  16 , the coin  10  passes through a space between the fixed roller  15  and the moving roller  16 . At this time, the coin  10  is vigorously moved to the payout opening  4  by the biasing force of the moving roller  16 . A discharge sensor  14  detects the discharged coin  10 . A detection result is output to a control circuit (not shown). The control circuit can count the discharged coin  10 . A plurality of the control pin  13  are disposed in a conveyance path through which the coins  10  are conveyed by the rotating body  5 . 
     An outer wall  17  for restricting a movement of the coins  10  is provided at an outer side of the outer periphery of the rotating body  5 . The outer wall  17  is not provided at least a space between the fixed roller  15  and the moving roller  16  in order to guide the coin  10  to the payout opening  4 . The coins  10  can move toward the payout opening  4  from the portion where the outer wall  17  is not provided. 
     Next, the rotating body  5  will be described.  FIG.  3    is a perspective view showing the rotating body. The coins  10  that are generally used are made of metal. An upper surface side member of the rotating body  5  is a first resin portion  20  made of resin such as plastic. A material of the first resin portion  20  is preferably engineering plastic in view from the perspective view of strength, durability, workability, and the like. The rotating body  5  is divided into three members which will be described later. 
     The rotating body  5  is worn by being brought into contact with the coins  10 . In order to reduce or prevent wearing, the rotating body  5  includes a metal portion and a resin portion. The entire rotating body  5  may be made of metal. In order to reduce a weight of the rotating body  5 , it is preferable that a part of the rotating body  5  is made of resin such as plastic. In addition, durability of the rotating body  5  can be improved by using metal to form a portion of the rotating body  5  that is greatly worn. The portion of the rotating body  5  that is greatly worn is the pushing pieces that push the coins  10  entered the separation holes  6 . The pushing piece pushes the coin  10  in a state that the coin  10  is brought into contact with the control pin  13  ( FIG.  2   ), the fixed roller  15  ( FIG.  2   ), and the moving roller  16  ( FIG.  2   ). Therefore, a force corresponding to a pushing force is applied to the pushing piece as a reaction force. In particular, a force is applied to a tip end of the pushing piece. Therefore, durability is improved by making the pushing piece of metal. The pushing pieces are disposed on a back surface side of the rotating body  5 . 
     The rotating body  5  is provided with five separation holes  6 . Alternatively, the rotating body  5  is provided with at least one separation hole  6 . A maximum number of the separation holes  6  is determined based on a size of the rotating body  5  and a size of the coin  10 . 
     Next, the back surface side of the rotating body  5  will be described.  FIG.  4    is a view showing the back surface side of the rotating body. 
     A shaft hole  23  into which a rotation shaft for the rotating body  5  is inserted is provided in a central portion of the rotating body  5 . The rotation shaft has a locking portion that passes through a center axis of the rotation shaft and is disposed perpendicular to an axial direction of the rotation shaft. A shaft locking groove  24  to be engaged with the locking portion is disposed in a central portion of the rotating body  5 . 
     The first resin portion  20  is provided with five separation holes  6  at equal distances from the rotation center and at equal intervals. The separation hole  6  is a through hole that passes through the front and back of the first resin portion  20 . A peripheral portion of the separation hole  6  is formed to be thick. A portion of a metal portion  22  other than a pushing piece  25  is made of a flat metal plate and is disposed in parallel to the base  7  ( FIG.  2   ). The pushing piece  25  is formed by bending an edge of the flat plate substantially perpendicularly to a direction of the base  7  ( FIG.  2   ). A surface of the pushing piece  25  that comes into contact with a coin is flat. For example, the metal portion  22  can be easily formed by cutting out an outer periphery of a flat plate by press processing and bending a portion serving as the pushing piece  25  by press processing. The metal portion  22  does not need to be subjected to a surface treatment for providing minute unevenness on a surface of the metal portion  22 . 
     A central portion including a periphery of the shaft hole  23  and a periphery of the shaft locking groove  24 , a peripheral portion of the first resin portion  20 , and peripheral portions of the separation holes  6  protrude from a back surface side of the first resin portion  20  of the rotating body  5 , and a concave portion  31  that is opened to the back surface side of the rotating body  5  is formed on the back surface side of the first resin portion  20  of the rotating body  5 . Positioning protrusions  33  are provided in parts of the concave portion  31  between adjacent separation holes  6 . The positioning protrusions  33  are protruding portions provided on the back surface side of the first resin portion  20 . The metal portion  22  is accommodated in the concave portion  31 . The metal portion  22  has through holes at portions corresponding to a protruding portion at the center of the first resin portion  20  and the positioning protrusions  33 . The metal portion  22  is fitted to the protruding portion at the center of the first resin portion  20  and is fixed to the first resin portion  20 . The metal portion  22  disposed in the concave portion  31  is fitted to the positioning protrusions  33  and is fixed to the first resin portion  20 . The metal portion  22  is a metal plate made of an iron alloy such as stainless steel, an aluminum alloy, or the like. The metal portion  22  includes bent portions between the adjacent separation holes  6 , and the bent portions function as the pushing pieces  25 . The positioning protrusions  33  are disposed at an equal distance from the rotation center of the rotating body  5 . The pushing pieces  25  are disposed on a circumference having a radius equal to the distance from the rotation center to the positioning protrusion  33 . Reverse rotation pieces  26  that come into contact with the coins when the rotating body  5  rotates in a reverse direction are also disposed on the circumference of the first resin portion  20  having a radius equal to the distance from the rotation center to the positioning protrusions  33 . Since the pushing piece  25  is formed by bending a flat plate, a contact surface with a coin is a flat surface. 
     The reverse rotation pieces  26  are disposed at a forward rotation direction side of the corresponding separation holes  6  of the rotating body  5 . The pushing pieces  25  are disposed at a reverse rotation direction side of the corresponding separation holes  6  of the rotating body  5 . The pushing piece  25  pushes the coin  10  when the rotating body  5  rotates in the forward direction, and the reverse rotation piece  26  pushes the coin  10  when the rotating body  5  rotates in the reverse direction. That is, a coin entered the separation hole  6  is positioned between the pushing piece  25  and the reverse rotation piece  26  and is conveyed. 
     Linear locking and fitting grooves  37  are formed in a portion that is a peripheral portion of the first resin portion  20  and forms an inner wall of the concave portion  31 . The locking and fitting grooves  37  are formed in an inner wall at an outer peripheral side of the concave portion  31 . The locking and fitting groove  37  is a groove to be fitted to a locking and fitting protrusion provided in a second resin portion  21  which will be described later. The locking and fitting groove  37  is disposed along an outer periphery of the first resin portion  20 , and has a narrow and long shape. 
       FIG.  5    is a perspective view showing a back surface side of the rotating body.  FIG.  5    is a perspective view when the rotating body  5  is viewed from the back surface side. The rotating body  5  includes the metal portion  22 , and resin portions of the first resin portion  20  and the second resin portion  21 . The metal portion  22  is inserted into the concave portion  31  of the first resin portion  20 . The second resin portion  21  is fixed to the first resin portion  20 . 
     The metal portion  22  is sandwiched and fixed between the first resin portion  20  and the second resin portion  21 . The second resin portion  21  is provided with pushing piece holes  30  that are through holes at positions corresponding to the pushing pieces  25  of the metal portion  22 . In addition, the second resin portion  21  is provided with through holes at portions corresponding to the positioning protrusions  33 . The second resin portion  21  covers the metal portion  22  so that the metal portion  22  inserted into the concave portion  31  does not come off. The pushing pieces  25  pass through the pushing piece holes  30  respectively and are disposed in a manner of protruding from the resin portion. The metal portion  22  can be fixed to the second resin portion  21  by fitting the pushing piece  25  into the pushing piece hole  30 . The first resin portion  20  or the second resin portion  21  may be referred to as a first resin rotating body that forms a resin portion of the rotating body  5 , and the metal portion  22  may be referred to as a metal rotating body that forms a metal portion of the rotating body  5 . The pushing piece  25  is disposed for each separation hole  6  provided in the rotating body  5 . A central convex portion  34  is provided so as to correspond to each of the pushing pieces  25  and provided at a position adjacent to each of the pushing pieces  25 . That is, the central convex portion  34  is provided for each pushing piece  25 , and prevents the pushing piece  25  from being deformed in the rotation direction of the rotating body  5 . A metal portion exposed from the second resin portion  21  toward the base  7  is the pushing piece  25  exposed from the pushing piece hole  30 . A portion of a metal component that comes into contact with a coin is minimized. It can also be said that a portion of a resin component that receives a strong force from the coin  10  is replaced with a metal component. 
     First step portions  28  and second step portions  29  are disposed on an outer peripheral portion of the first resin portion  20  corresponding to the respective separation holes  6 . Unevenness is formed on the outer peripheral portion of the first resin portion  20  by the first step portions  28  and the second step portions  29  which are provided so as to correspond to the separation holes  6 . Five outer peripheral convex portions  32  are formed on the outer peripheral portion of the first resin portion  20 . Concave portions are formed between the outer peripheral convex portions  32 , and the coin  10  entered the separation hole  6  can pass through the concave portions. The coin  10  entered from the separation hole  6  can move through a passage wider than an opening of the separation hole  6  provided at the back surface side of the first resin portion  20  and the second resin portion  21 . Since the passage is set to have a size that allows one coin  10  to enter, other coins  10  do not enter the passage from the separation hole  6  in a state that the coin  10  is present. 
     The second resin portion  21  is provided with base portions  36  extending radially, an inner peripheral convex portion  35 , and the central convex portions  34 . The inner peripheral convex portion  35  and the central convex portions  34  protrude from the base portions  36 . Each of the central convex portions  34  has a through hole through which the positioning protrusion  33  passes. The second resin portion  21  is made of resin such as plastic. The second resin portion  21  is preferably made of engineering plastic. The second resin portion  21  is preferably made of the same material as the first resin portion  20 . Since the second resin portion  21  does not come into contact with the coin  10 , the second resin portion  21  can be made of resin having lower durability than the first resin portion  20  in regard of coming into contact with the coin  10 . 
     The rotating body  5  is located above the base  7  ( FIG.  2   ). In order to rotate the rotating body  5 , a groove that avoids the control pin  13  ( FIG.  2   ) is required. The pushing piece  25 , the central convex portion  34 , and the reverse rotation piece  26  are disposed between the inner peripheral convex portion  35  and the outer peripheral convex portion  32 , and form concentric convex and concave portions. When the rotating body  5  rotates, the control pin  13  ( FIG.  2   ) passes through concave portions formed concentrically. Surfaces of the pushing pieces  25 , the central convex portions  34 , the reverse rotation pieces  26 , the inner peripheral convex portion  35 , and the outer peripheral convex portions  32  are formed to be substantially flush with one another. The positioning protrusions  33  are provided in a manner of being flush with the central convex portions  34  or in a manner in which the positioning protrusions  33  do not protrude from the central convex portions  34 . 
     The coin  10  entered the separation hole  6  is surrounded by the pushing piece  25 , the reverse rotation piece  26 , the central convex portion  34 , and the outer peripheral convex portion  32 , and is conveyed while being limited in a moving range. When the rotating body  5  rotates in a forward direction, the coin  10  is pushed by the pushing piece  25  and moves. When the rotating body  5  rotates in a reverse direction, the coin  10  is pushed by the reverse rotation piece  26  and moves. Although the reverse rotation piece  26  is made of resin, the reverse rotation piece  26  may be formed by bending the metal portion  22  in the same manner as the pushing piece  25 . The rotating body  5  is less likely to be rotated in the reverse direction as compared with the forward direction. Therefore, the reverse rotation piece  26  is less likely to be worn or damaged by being brought into contact with the coin  10 , as compared with the pushing piece  25 . The reverse rotation piece  26  may be made of resin, and is more preferably made of metal. Similar to the pushing piece  25 , the reverse rotation piece  26  can be formed by bending a part of the metal portion  22 . The metal portion  22  is made of a material harder than the first resin portion  20  and the second resin portion  21 . The durability of the rotating body  5  can be sufficiently improved by the metal portion  22 . When the durability of the rotating body  5  is sufficiently high, a replacement frequency of the rotating body  5  is reduced. When the durability of the rotating body  5  is sufficient, the first resin portion  20  and the second resin portion  21  may be fixed by an adhesive. The first resin portion  20  and the second resin portion  21  may be fixed to each other by using a fitting mechanism and an adhesive in combination. In the case of fixing by an adhesive, a component can be replaced by peeling off an adhered portion. In addition, the resin portion can be replaced while leaving the metal portion  22 . 
     The coin  10  is deposited on the first resin portion  20 . Since the coin  10  may fall from above and hit the first resin portion  20 , sufficient durability of the first resin portion  20  is required. When comparing a thickness of the first resin portion  20  and a thickness of the second resin portion  21  between the adjacent separation holes  6  in a rotation direction of the rotating body  5 , the first resin portion  20  is thicker than the second resin portion  21 . Preferably, the first resin portion  20  is thicker than a total thickness of the second resin portion  21  and the metal portion  22  at a predetermined location. The durability of the first resin portion  20  can be increased by increasing the thickness of the first resin portion  20 . The durability of the rotating body  5  is improved by the metal portion  22  that pushes the coin  10  and the first resin portion  20 . The rotating body  5  formed in this manner is less likely to be subjected to a fatal damage in which the rotating body  5  needs to be replaced. 
     Next, the second resin portion  21  and the metal portion  22  will be described with reference to  FIGS.  6  and  7   .  FIG.  6    is a first view showing a structure of the rotating body.  FIG.  7    is a second view showing a structure of the rotating body.  FIG.  6    is a view seen from the metal portion  22  side, and  FIG.  7    is a view seen from the second resin portion  21  side. 
     The second resin portion  21  is provided with the pushing piece holes  30  corresponding to the pushing pieces  25  respectively. The pushing piece holes  30  are through holes that pass through the front and back of the second resin portion  21 . The pushing pieces  25  are fitted into the pushing piece holes  30  respectively. 
     A first through hole  38  having a circular opening is provided in a central portion of the second resin portion  21 . A third through hole  40  having a circular opening is provided in a central portion of the metal portion  22 . The first through hole  38  and the third through hole  40  have the same opening diameter. A central protruding portion of the first resin portion  20  ( FIG.  5   ) is fitted into the first through hole  38  and the third through hole  40 . The metal portion  22  is provided with five arms on which the pushing pieces  25  are formed. Each of the five arms is provided with the pushing piece  25 . The five pushing pieces  25  and the five arms are integrally formed. The metal portion  22  and the second resin portion  21  are easily attached and detached. 
     Each of five arms that radially extend from a central portion of the second resin portion  21  is provided with a second through hole  39  having a circular opening. Each of the five arms that radially extend from the center of the metal portion  22  is provided with a fourth through hole  41  having a circular opening. The second through hole  39  and the fourth through hole  41  have the same opening diameter. Each of the second through hole  39  and the fourth through hole  41  has an opening having a shape corresponding to the positioning protrusion  33   
     ( FIG.  5   ). That is, the second through hole  39  and the fourth through hole  41  are through holes having the same opening shape. The positioning protrusion  33  ( FIG.  5   ) is fitted into the second through hole  39  and the fourth through hole  41 . The positioning protrusion  33  (FIG.  5 ) positions the pushing piece  25  and the central convex portion  34  at predetermined positions. That is, the pushing piece  25  can be disposed at a position adjacent to the central convex portion  34  by fitting the positioning protrusion  33  to the second through hole  39  and the fourth through hole  41 . The positioning protrusion  33  can also be referred to as an engagement protrusion that engages the second resin portion  21  and the metal portion  22  with the first resin portion  20 . The second through hole  39  may be a hole in which the positioning protrusion  33  does not pass through as long as the second through hole  39  is fitted to the positioning protrusion  33 . 
     The second resin portion  21  and the metal portion  22  overlap each other in a top view. In a top view, the metal portion  22  is disposed in a manner of not protruding from the second resin portion  21  except for the portion of the pushing piece  25 . 
     An arm side surface  44  at a tip end of each of five radially extending portions of the second resin portion  21  has an arc shape corresponding to the concave portion  31  ( FIG.  4   ). A locking and fitting protrusion  42  is provided on the arm side surface  44 . The locking and fitting protrusion  42  is a linear protrusion provided on the arm side surface  44 . The locking and fitting protrusion  42  is fitted into the locking and fitting groove  37  ( FIG.  4   ). The metal portion  22  and the second resin portion  21  can be fixed to the first resin portion  20  ( FIG.  4   ) by fitting the locking and fitting protrusion  42  to the locking and fitting groove  37  ( FIG.  4   ). That is, it can be said that the first resin portion  20  ( FIG.  4   ) is provided with a first coupling portion referred to as the locking and fitting groove  37 , and the second resin portion  21  is provided with a second coupling portion referred to as the locking and fitting protrusion  42 . The first resin portion  20  and the second resin portion  21  are fixed to each other by coupling the first coupling portion and the second coupling portion to each other. In addition, the first resin portion  20  and the second resin portion  21  can be firmly fixed to each other by an adhesive. 
     A thick portion  43  is provided at a tip end portion of each of five radially extending portions from the center of the second resin portion  21 . The thick portions  43  are disposed at equal distances from the rotation center of the second resin portion  21 . The thick portion  43  improves strength of an outer peripheral portion of the second resin portion  21 , and prevents deformation such as bending or twisting when the second resin portion  21  is fixed to the first resin portion  20  ( FIG.  4   ). The thick portion  43  improves the strength such that the locking and fitting protrusion  42  is not deformed. A thickness of the thick portion  43  is approximately equal to the thickness of the metal portion  22 , and is twice the thickness of the base portion  36 . The locking and fitting protrusion  42  is disposed at a central portion of the thick portion  43  in a thickness direction. 
     The central convex portion  34  that protrudes from the base portion  36  of the second resin portion  21  is provided adjacent to each of the pushing piece holes  30 . That is, when the second resin portion  21  and the metal portion  22  are fitted to each other, each of the pushing pieces  25  and each of the central convex portions  34  are adjacent to each other. When a coin is pushed by the pushing piece  25 , a force is applied to the pushing piece  25 . When a force is applied to the pushing piece  25 , the pushing piece  25  is prevented from being deformed by the central convex portion  34  adjacent to the pushing piece  25 . Although the central convex portion  34  is made of resin, since a coin does not come into direct contact with the central convex portion  34 , the central convex portion  34  is not scrapped by the coin. When the pushing piece  25  pushes a coin in a state that the coin is brought into contact with the control pin  13  ( FIG.  2   ) or the moving roller  16 , the pushing piece  25  receives a strong force. When the pushing piece  25  is made of plastic, the pushing piece  25  may be damaged. Even when the pushing piece  25  is made of metal, the pushing piece  25  may be bent to an opposite side relative to a rotation direction. Since the central convex portion  34  is disposed adjacent to the pushing piece  25 , the central convex portion  34  can prevent the pushing piece  25  from being deformed. In addition, a surface of the pushing piece  25  at a side where the pushing piece  25  comes into contact with the central convex portion  34  is the entire surface of the pushing piece  25 , and the entire surface of the pushing piece  25  is brought into contact with the central convex portion  34  and is supported by the central convex portion  34 . Since the entire surface of the pushing piece  25  is supported, it is possible to prevent the pushing piece  25  from being bent due to the contact with the coin  10 . A width of the central convex portion  34  is substantially the same as a width of the pushing piece  25 , a length of the central convex portion  34  is longer than the width of the central convex portion  34 , and the strength of the central convex portion  34  in the rotation direction is enhanced. The central convex portion  34  is not deformed even when a force is applied from the pushing piece  25 . 
     Next, an operation of discharging a coin from the coin hopper will be described with reference to  FIGS.  8 A to  8 F .  FIGS.  8 A to  8 F  are views showing an operation of the coin hopper.  FIG.  8 A  is a view showing a first state of the operation of the coin hopper.  FIG.  8 B  is a view showing a second state of the operation of the coin hopper.  FIG.  8 C  is a view showing a third state of the operation of the coin hopper.  FIG.  8 D  is a view showing a fourth state of the operation of the coin hopper.  FIG.  8 E  is a view showing a fifth state of the operation of the coin hopper.  FIG.  8 F  is a view showing a sixth state of the operation of the coin hopper. 
       FIGS.  8 A to  8 F  are top views showing states in which the container  2  ( FIG.  1   ) and the first resin portion  20  ( FIG.  3   ) are removed for the convenience of seeing a state that the coin  10  comes into contact with the rotating body  5 . State changes are shown in the order from  FIG.  8 A  to  FIG.  8 F . The coin  10  is indicated by a broken line. 
     The rotating body  5  rotates in a counterclockwise direction and moves the coin  10  that entered a concave portion of the rotating body  5 . The coin  10  is pushed by the pushing piece  25  and is conveyed in a state that the coin  10  is surrounded by the outer wall  17  and the concave portion of the rotating body  5 . The pushing piece  25  passes between the two control pins  13 . 
       FIG.  8 A  shows a state that the coin  10  moves to a position where the coin  10  comes into contact with the control pin  13 . The coin  10  comes into contact with a side wall of the second resin portion  21  and the pushing piece  25 . 
     In accordance with the rotation of the rotating body  5 , the pushing piece  25  pushes the coin  10  in the rotation direction of the rotating body  5 . The control pin  13  restricts the coin  10  from moving in the rotation direction of the rotating body  5 . Therefore, a moving direction of the coin  10  is changed to a direction of the payout opening  4 . A force for changing the moving direction of the coin  10  is applied to the pushing piece  25 . 
       FIG.  8 B  shows a state that the coin  10  moves toward the payout opening  4  and comes into contact with the moving roller  16 . The coin  10  is pushed by the pushing piece  25  in accordance with the rotation of the rotating body  5 . The coin  10  is separated from the control pin  13  at the center side of the rotating body  5  and comes into contact with the control pin  13  at an outer side. A contact position of the pushing piece  25  with the coin  10  is moved in a direction away from the center of the rotating body  5  as the rotating body  5  rotates. 
       FIG.  8 C  shows a state that the coin  10  moves in the direction of the payout opening  4  in accordance with the rotation of the rotating body  5  and comes into contact with the fixed roller  15  and the moving roller  16 . The coin  10  pushed by the pushing piece  25  moves in the direction of the payout opening  4  and is separated from the control pin  13 . When the coin  10  does not come into contact with the fixed roller  15  and the moving roller  16 , a distance between the fixed roller  15  and the moving roller  16  is smaller than a diameter of the coin  10 . As the rotating body  5  rotates, the moving roller  16  is pushed by the coin  10 , and the distance between the fixed roller  15  and the moving roller  16  increases. Since the moving roller  16  can move in a direction away from the fixed roller  15 , the coin  10  can move in the direction of the payout opening  4 . A force for pushing the moving roller  16  is applied to the pushing piece  25 . 
       FIG.  8 D  shows a state that the coin  10  moves between the fixed roller  15  and the moving roller  16  in the direction of the payout opening  4 . When the coin  10  comes into contact with both the fixed roller  15  and the moving roller  16  and is further pushed by the pushing piece  25 , the moving roller  16  moves in a direction away from the fixed roller  15 . The coin  10  passes through a space between the fixed roller  15  and the moving roller  16  and further moves in the direction of the payout opening  4 . 
       FIG.  8 E  shows a state that the distance between the fixed roller  15  and the moving roller  16  is equal to the diameter of the coin  10 . The coin  10  is pushed by the pushing piece  25  until the coin  10  further moves in the direction toward the payout opening  4  and the distance between the fixed roller  15  and the moving roller  16  exceeds the diameter of the coin  10 . 
     Since an end portion of the pushing piece  25  in an outer peripheral direction of the rotating body  5  is brought into contact with the coin  10 , a reaction force when the coin  10  is pushed is applied to the end portion of the pushing piece  25 . That is, since a strong force is applied to the pushing piece  25 , the pushing piece  25  is deformed and worn in a case where the pushing piece  25  is made of resin. For example, when an edge of the coin  10  strongly hits the resin portion, the resin portion may be scrapped. 
       FIG.  8 F  shows a state that the coin  10  is separated from the pushing piece  25  and moves in the direction toward the payout opening  4 . The moving roller  16  is biased by a spring in a direction in which the moving roller  16  comes close to the fixed roller  15 . The coin  10  is pushed by the pushing piece  25  until the distance between the fixed roller  15  and the moving roller  16  is equal to the diameter of the coin  10 . Thereafter, the coin  10  is pushed by the moving roller  16  and moves in the direction of the payout opening  4 . The moving roller  16  moves in a direction in which the moving roller  16  comes close to the fixed roller  15  while pushing a side surface of the coin  10 . Then, the moving roller  16  returns to an initial position. 
     Since the moving roller  16  is biased by the spring in a direction in which the moving roller  16  comes close to the fixed roller  15 , the moving roller  16  is moved in a direction of the fixed roller  15  by the biasing force of the spring. The coin  10  is pushed in the direction of the payout opening  4  by the moving roller  16 . The discharge sensor  14  detects a matter that the coin  10  passed through. 
     An end portion of the pushing piece  25  at a side close to the center of a contact surface with the rotating body  5  is referred to as a first end portion, and an end portion of the pushing piece  25  at a side far from the center is referred to as a second end portion. In a state that the coin  10  comes into contact with the control pin  13  at the side close to the center of the rotating body  5 , the first end portion of the pushing piece  25  is brought into contact with the coin  10 . In a state that the coin  10  comes into contact with the control pin  13  at the side far from the center of the rotating body  5 , the second end portion of the pushing piece  25  is brought into contact with the coin  10 . That is, in a top view, a surface of the pushing piece  25  that comes into contact with the coin  10  is disposed in a direction intersecting a line passing through the center of the rotating body  5 . A contact position of the pushing piece  25  with the coin  10  is moved from a rotation center direction side of the rotating body  5  to a direction side away from the rotation center in accordance with the rotation of the rotating body  5 . The coin  10  moves in a direction away from the rotation center in accordance with the rotation of the rotating body  5 . Since the control pin  13  is disposed at a predetermined position of the base  7 , when the coin  10  is conveyed to the predetermined position, a moving direction of the coin  10  is changed and the coin  10  is discharged. 
     The pushing piece  25  changes the moving direction of the coin  10  from the rotation direction of the rotating body  5  to a direction between the fixed roller  15  and the moving roller  16  at a position where the coin  10  comes into contact with the control pin  13 . Therefore, a force is applied to the coin  10  in a direction intersecting with the rotation direction of the rotating body  5 . Depending on a direction in which the force is applied, the rotation of the rotating body  5  is stopped and a jam occurs. In a worst case, a component is damaged. 
     A length of the surface of the pushing piece  25  that comes into contact with the coin  10  is smaller than a distance between the two control pins  13 . That is, the pushing piece  25  passes between the two control pins  13  in accordance with the rotation of the rotating body  5 . Since an end portion of a surface of the pushing piece  25  that comes into contact with the coin  10  comes into contact with the coin  10 , a strong force is applied to the end portion. Therefore, the end portion of the pushing piece  25  is preferably made of metal, and in particular, is preferably made of hard metal such as an iron alloy such as stainless steel, a titanium alloy, or an aluminum alloy. 
     Next, a coin processing device will be described.  FIG.  9    is a perspective view showing an example of the coin processing device. 
     The coins  10  stored in a storage container  60  of a coin processing device  50  are mixed coins of a plurality of denominations. The coin processing device  50  classifies the coins  10  stored in the storage container  60  for each denomination and stores the classified coins  10  in the coin hopper  1 . The coin processing device  50  is a device that discharges the coins  10  from the coin hopper  1  based on an instruction from an external device. Such a coin processing device  50  is installed in a POS system, a money exchange machine, or the like. 
     The coin processing device  50  includes a separation unit  51 , an identification unit  52 , and a sorting unit  53 . The coins  10  of different denominations are inserted into the storage container  60  in a mixed state. The separation unit  51  hands over the coins  10  one by one to the identification unit  52 . The identification unit  52  causes a sensor (not shown) to detect characteristics of the coins  10  conveyed one by one, and identifies the denomination of the coins. The coin  10  whose denomination is specified is handed over from the identification unit  52  to the sorting unit  53 . The sorting unit  53  stores the coin  10  whose denomination is specified into the corresponding coin hopper  1 . 
     In the sorting unit  53 , the coin  10  is conveyed along a rail  58  by a conveyance pin  54 . A sorting flap  55  is disposed along the rail  58 . The sorting flap  55  changes a moving path of the coin  10  by a drive unit (not shown). The coin  10  drops to a slider  56  or passes by the slider  56  without being dropped to the slider  56  according to a state of the sorting flap  55 . When the coin  10  drops to the slider  56 , the coin  10  passes through a guide path  57  and is stored in the container  2  of the coin hopper  1 . 
     The coin  10  whose denomination is identified is stored in one of the four coin hoppers  1 , or is guided to a reject passage  61  and discharged to a payout tray  62 . Since four coin hoppers  1  are provided, the coins  10  of four denominations can be stored, and coins of the other denominations are discharged without being accepted. The coins  10  are discharged onto a discharge belt  59  from a plurality of coin hoppers  1  arranged in a row. That is, it can be said that the discharge belt  59  is a coin receiving portion that receives the coins  10  discharged from the plurality of coin hoppers  1  arranged in a row. The coins  10  can be collected at one position by rotating the discharge belt  59 . 
     The coins  10  discharged from the payout opening  4  of the coin hopper  1  are placed on the discharge belt  59 . The discharge belt  59  is driven by a drive unit (not shown) to convey the coins  10  to the payout tray  62 . 
     Next, a second example of a rotating body will be described with reference to  FIGS.  10  to  14   . A second rotating body  70  can be applied to the rotating body of the coin hopper described above.  FIG.  10    is a perspective view showing an example of the second rotating body. 
     In the second rotating body  70 , a second metal portion that is a metal rotating body to be described later is sandwiched between two resin rotating bodies of a third resin portion  72  and a fourth resin portion  73 . A material of the rotating body made of resin is preferably plastic having good workability and high durability, such as engineering plastic. A material of the metal rotating body is preferably metal having good workability and high durability, such as an iron alloy, a titanium alloy, and an aluminum alloy. 
     The third resin portion  72  is provided with stirring protrusions  71  disposed between the separation holes  6 , and the stirring protrusions  71  stir coins in the container. The second rotating body  70  is provided with a stirring portion  12  at a position of a rotation center. The stirring protrusions  71  are protrusions radially extending from the stirring portion  12  disposed on a surface of the third resin portion. When the second rotating body  70  rotates, the stirring portion  12  and the stirring protrusions  71  stir the coins in the container. 
     The fourth resin portion  73  includes a wall portion  76  erected along an outer periphery of the fourth resin portion  73 . The wall portion  76  is provided with a plurality of locking protrusions  75 . Each of the locking protrusions  75  is retained at a predetermined position on an outer peripheral side of the third resin portion  72 , and the third resin portion  72  and the fourth resin portion  73  are fixed to each other. The fourth resin portion  73  is provided with a discharge groove  27  through which coins to be discharged to respective separation holes  6  pass. 
     Each of the separation holes  6  is provided with the reverse rotation piece  26  at a downstream side in a rotation direction of the second rotating body  70 , and the reverse rotation piece  26  comes into contact with a coin when the second rotating body  70  rotates in a reverse direction. The discharge groove  27  allows a coin to move from an inner peripheral side to an outer peripheral side of the wall portion  76 . 
     Next, a structure of the second rotating body  70  will be described.  FIG.  11    is a first view showing a structure of an example of the second rotating body.  FIG.  11    shows a state that a second metal portion  74  is fitted to the fourth resin portion  73  of the second rotating body  70 .  FIG.  12    is a second view showing a structure of an example of the second rotating body.  FIG.  12    is a perspective view showing the fourth resin portion  73  which is a part of the second rotating body  70 . 
     A rotation shaft is inserted through a third shaft hole  83  at a rotation center of the second metal portion  74 . The second metal portion  74  is provided with metal plate arms disposed between adjacent separation holes  6 , the metal plate arms extend radially in three directions and at equal intervals around the third shaft hole  83 . A bent portion bent substantially at a right angle is provided at a tip end side of each of the metal plate arms extending in the three directions. The bent portions serve as a second pushing piece  77  and a third pushing piece  78  for pushing coins. The second pushing pieces  77  are inserted into second pushing piece holes  79  respectively that pass through the front and back of the fourth resin portion  73 , and a tip end of each of the second pushing pieces  77  protrudes from a back surface side of the fourth resin portion  73 . The third pushing piece  78  are inserted into third pushing piece holes  80  respectively that pass through the front and back of the fourth resin portion  73 , and a tip end of each of the third pushing pieces  78  protrudes from the back surface side of the fourth resin portion  73 . 
     Outer peripheral through holes  82  are provided along a base of the wall portion  76  of the fourth resin portion  73 . The outer peripheral through holes  82  are through holes that pass through the front and back of the fourth resin portion  73 . The outer peripheral through holes  82  are provided at positions corresponding to the locking protrusions  75 . When the third resin portion  72  is hooked on the locking protrusions  75 , the wall portion  76  is easily bent to prevent damage. 
     Two locking protrusions  75  are disposed between adjacent separation holes  6 . The third pushing piece  78  is disposed between the adjacent locking protrusions  75 . A rotation center of the second metal portion  74  of the second rotating body  70  is fixed to a rotation shaft. 
     The second metal portion  74  is provided with fifth through holes  84  disposed at an upstream side of the corresponding second pushing pieces  77  in a rotation direction. The fifth through hole  84  is disposed in each of arms of the second metal portion  74 . The fifth through holes  84  are through holes that pass through the front and back of the second metal portion  74 . A protrusion to be described later is fitted into each of the fifth through holes  84 , and looseness of the second metal portion  74  in the rotation direction is prevented by the protrusion. The fourth resin portion  73  is provided with a second positioning protrusion  81 , and the second positioning protrusion  81  is fitted into a sixth through hole  85  of the second metal portion  74 . The second positioning protrusion  81  indicates a fixed position of the second metal portion  74  relative to the fourth resin portion  73 . 
     The fourth resin portion  73  is provided with seventh through holes  102  at positions corresponding to the fifth through holes  84  respectively. Openings  86  are openings of the seventh through holes  102  in a contact surface of the fourth resin portion  73  with the second metal portion  74 . The seventh through holes  102  are through holes that pass through the front and back of the fourth resin portion  73 . Protrusions to be described later are fitted into the fifth through holes  84  and the seventh through holes  102 , and looseness of the second metal portion  74  and the fourth resin portion  73  in the rotation direction is prevented by the protrusion. The seventh through holes  102  may be holes in which the protrusions do not pass through as long as the protrusions are fitted to the seventh through holes  102 . 
     The fourth resin portion  73  includes a second shaft hole  87 . The second shaft hole  87  is provided with a rotation stop hole  88 . A rotation shaft is inserted into the second shaft hole  87 , and a rotation stop lever fixed perpendicularly to the rotation shaft is fitted into the rotation stop hole  88 . The rotation shaft and the fourth resin portion  73  are fixed such that the rotation of the fourth resin portion  73  is interlocked with the rotation of the rotation shaft. The rotation of the rotation shaft may be transmitted to the fourth resin portion  73  in a similar manner by making a cross section of the rotation shaft into a non-circular shape and making the rotation stop hole  88  into a shape corresponding to the non-circular shape. 
     Next, the third resin portion  72  will be described.  FIG.  13    is a third view showing a structure of an example of the second rotating body. 
     The stirring portion  12  is provided at a front side of the third resin portion  72 . A second concave portion  89  that houses the second metal portion  74  is provided on a back side of the third resin portion  72 . The second concave portion  89  is formed along an outer shape of the second metal portion  74 . 
     A fourth shaft hole  93  is provided at a rotation center of the third resin portion  72 . A rotation shaft is inserted into the fourth shaft hole  93 . 
     The second concave portion  89  is provided with three third positioning protrusions  90 . The third positioning protrusions  90  are disposed at positions corresponding to the fifth through holes  84  of the second metal portion  74  and the seventh through holes  102  of the fourth resin portion  73 , and are fitted into the respective holes. The third positioning protrusions  90  are fitted into the fifth through holes  84  and the seventh through holes  102 , and looseness among the third resin portion  72 , the fourth resin portion  73 , and the second metal portion  74  in the rotation direction is prevented by the third positioning protrusions  90 . The second rotating body  70  rotates as an integrated body of the third resin portion  72 , the fourth resin portion  73 , and the second metal portion  74 . A cross section of each of the third positioning protrusions  90  is circular, and is not limited to a circular shape. A shape of the cross section of each of the third positioning protrusions  90  may be a polygonal shape, an elliptical shape, or the like, and is preferably a shape that can be easily processed. 
     A peripheral surface  91  that is a side surface of the third resin portion  72  is provided with locking concave portions  92 . The locking concave portions  92  are disposed at positions corresponding to the locking protrusions  75  respectively. Each of the locking protrusion  75  and each of the locking concave portions  92  are engaged with each other, and the third resin portion  72  and the fourth resin portion  73  are fixed to each other. The second metal portion  74  is sandwiched and fixed between the third resin portion  72  and the fourth resin portion  73 . The second rotating body  70  can be easily assembled and disassembled. It can be said that the locking concave portions  92  are contact portions that come into contact with the locking protrusions  75 , and the locking protrusions  75  are contact portions that come into contact with the locking concave portions  92 . 
     Next, a back surface side of the second rotating body  70  will be described.  FIG.  14    is a perspective view showing a back surface side of an example of the second rotating body. In the second rotating body  70 , the second metal portion  74  is sandwiched between the third resin portion  72  and the fourth resin portion  73 , and the third resin portion  72  and the fourth resin portion  73  are fitted and fixed to each other. 
     The fourth resin portion  73  is disposed at the back surface side of the second rotating body  70 . A back surface of the fourth resin portion  73  is provided with a groove in order to avoid the control pin when the second rotating body  70  rotates. A first escape groove  100  and a second escape groove  101  of the fourth resin portion  73  are grooves through which the control pin passes without coming into contact with the fourth resin portion  73 . In order to form such grooves, the fourth resin portion  73  is provided with second central convex portions  97 , second inner peripheral convex portions  98 , and second outer peripheral convex portions  99 . 
     The second inner peripheral convex portions  98  are provided between the first escape groove  100  and the second escape groove  101 . The second inner peripheral convex portion  98  is provided at an upstream side of each of the second pushing piece  77  in the rotation direction of the second rotating body  70 . Each of the second inner peripheral convex portion  98  is adjacent to the second pushing piece  77  and prevents deformation of the corresponding second pushing piece  77  against a force applied when the corresponding second pushing piece  77  comes into contact with a coin. 
     The seventh through hole  102  is provided in each of the second inner peripheral convex portions  98 . The seventh through hole  102  is provided at an upstream side of each of the second pushing pieces  77  in the rotation direction of the second rotating body  70 , and the third positioning protrusion  90  is fitted into each of the seventh through holes  102 . When a coin is pushed by the second pushing piece  77 , most force is applied to the upstream side of the second pushing piece  77  in the rotation direction of the second rotating body  70 . Therefore, the third positioning protrusion  90  is provided at the upstream side of each of the second pushing pieces  77  in the rotation direction of the second rotating body  70 . The third positioning protrusions  90  firmly couple the third resin portion  72 , the fourth resin portion  73 , and the second metal portion  74  so that the third resin portion  72 , the fourth resin portion  73 , and the second metal portion  74  do not shift from one another. 
     The second pushing piece hole  79  is provided adjacent to each of the second inner peripheral convex portions  98  at a downstream side of each of the second inner peripheral convex portions  98  in the rotation direction of the second rotating body  70 . A first buffer portion  94  is provided at a side of the second pushing piece hole  79  of each of the second inner peripheral convex portion  98  in a direction of the rotation center of the second rotating body  70 . The third pushing piece hole  80  is provided adjacent to each of the second outer peripheral convex portions  99  at a downstream side of each of the second outer peripheral convex portion s  99  in the rotation direction of the second rotating body  70 . A second buffer portion  95  and a third buffer portion  96  are provided at a rotation center side and an outer peripheral side of the second rotating body  70  respectively with respect to the third pushing piece hole  80  in each of the second outer peripheral convex portions  99 . 
     Each of the first buffer portions  94  prevents a coin from coming into contact with an edge of the corresponding second pushing piece  77 . A coin may be scratched when the coin comes into contact with the edge of the second pushing piece  77 . When the second rotating body  70  rotates, the first buffer portion  94  covers the edge at a side where the coin first comes into contact with the second pushing piece  77 . This is because this portion easily scratches the coin. In this example, an edge at one side of the second pushing piece  77  is covered with the first buffer portion  94 , however, edges at both sides of the second pushing piece  77  may be covered with the first buffer portion  94 . The second buffer portion  95  and the third buffer portion  96  cover edges at both sides of the third pushing piece  78  and prevent the edges and the coins from coming into contact with each other. Since the first buffer portions  94 , the second buffer portions  95 , and the third buffer portions  96  do not push coins with a strong force, the first buffer portions  94 , the second buffer portions  95 , and the third buffer portions  96  can be formed of resin. 
     The second shaft hole  87  is opened wider than the third shaft hole  83 . Therefore, a periphery of the third shaft hole  83  of the second metal portion  74  is exposed from the second shaft hole  87 . The second metal portion  74  comes into contact with and is fixed to the rotation shaft. When a predetermined position of the rotation shaft comes into contact with the periphery of the third shaft hole  83  and the rotation shaft is fixed, a distance between the second metal portion  74  and the base can be made constant. Predetermined positions are brought into contact with each other and fixed. Although a configuration in which a protrusion is provided in the third resin portion  72  and a through hole is provided in the fourth resin portion  73  is described as an example, a through hole may be provided in the third resin portion  72  and a protrusion may be provided in the fourth resin portion  73 . 
     Next, a third example of a rotating body will be described with reference to  FIGS.  15  to  18   . A third rotating body  110  can be applied to the rotating body of the coin hopper described above. First, an outer shape of the third rotating body  110  will be described with reference to  FIGS.  15  and  18   .  FIG.  15    is a top view showing an example of the third rotating body.  FIG.  15    is a view showing the third rotating body  110  as viewed from directly above.  FIG.  18    is a perspective view showing a back surface side of an example of the third rotating body. 
     The third rotating body  110  is provided with three separation holes  6 . The stirring protrusions  71  extend radially from the stirring portion  12  on an upper surface of third rotating body  110 . 
     The third rotating body  110  includes a fifth resin portion  111  at an upper surface side, a sixth resin portion  112  at a back surface side, and a third metal portion  113  which will be described later and is sandwiched between the fifth resin portion  111  and the sixth resin portion  112 . The fifth resin portion  111  is provided with second locking concave portions  115 , and the second locking concave portions  115  are respectively engaged with second locking protrusions  114  provided on the sixth resin portion  112  to fix the fifth resin portion  111  and the sixth resin portion  112 . The third rotating body  110  can be easily assembled and disassembled. 
     The second locking concave portions  115  are disposed at an outer peripheral side of the fifth resin portion  111 , and are provided between the adjacent separation holes  6 . The second locking concave portions  115  sandwich the stirring protrusion  71 . 
     Fourth pushing pieces  116  and fifth pushing pieces  117  protrude from predetermined positions of the back surface side of the sixth resin portion  112  and push coins. 
     The fifth resin portion  111  is provided with fourth positioning protrusions  119 , and the fourth positioning protrusions  119  are fitted into through holes provided in the third metal portion  113  and through holes provided in the sixth resin portion  112  which will be described later. At least one fourth positioning protrusion  119  is disposed at an upstream side of each of the fourth pushing pieces  116  in a rotation direction of the third rotating body  110  and disposed between each of the fourth pushing pieces  116  and each of the separation holes  6 . The fourth positioning protrusions  119  are fitted into through holes, and the fourth positioning protrusions  119  prevent looseness among the fifth resin portion  111 , the sixth resin portion  112 , and the third metal portion  113  to be described later in the rotation direction. An upstream side of a base of each of the fourth pushing pieces  116  in the rotation direction of the third rotating body  110  is supported by the sixth resin portion  112 . Although a force is applied to the fourth pushing piece  116  when the fourth pushing piece  116  pushes a coin, the fourth pushing piece  116  is prevented from being bent. 
     A rotation shaft is inserted into a sixth shaft hole  122  of the sixth resin portion  112 , and the sixth resin portion  112  is fixed to the rotation shaft. 
     The fourth positioning protrusion  119  is disposed at a position corresponding to each of the fourth pushing pieces  116 , and another fourth positioning protrusion  119  is provided between the rotation center and the fourth positioning protrusion  119 . The fourth positioning protrusions  119  prevent looseness among the fifth resin portion  111 , the sixth resin portion  112 , and the third metal portion  113  to be described later. The third rotating body  110  rotates as an integrated body of the fifth resin portion  111 , the sixth resin portion  112 , and the third metal portion  113 . 
     Next, an inner side of the third rotating body  110  will be described.  FIG.  16    is a first view showing a structure of an example of the third rotating body.  FIG.  16    is a perspective view showing a state that the fifth resin portion  111  and the third metal portion  113  are fixed to each other. 
     A back surface side of the fifth resin portion  111  is provided with a concave portion that houses the third metal portion  113 , and the third metal portion  113  is housed in the concave portion. The concave portion is provided with the fourth positioning protrusion  119 . In addition, the concave portion is provided with the second locking concave portion  115 . 
     The third metal portion  113  is provided with a fifth shaft hole  118  at the rotation center. The rotation shaft is inserted into the fifth shaft hole  118  and is fixed. The third metal portion  113  is provided with arms extending radially in three directions and at equal angles from the fifth shaft hole  118 . The third metal portion  113  is provided with through holes into which the fourth positioning protrusions  119  are fitted. The fourth pushing piece  116  and the fifth pushing piece  117  are provided at each tip end side of the third metal portion  113 . 
     Next, an inner side of the third rotating body  110  will be described from another direction.  FIG.  17    is a second view showing a structure of an example of the third rotating body.  FIG.  17    is a perspective view showing a state that the sixth resin portion  112  and the third metal portion  113  are fixed to each other. 
     The sixth resin portion  112  is provided with a fourth pushing piece hole  120  through which each of the fourth pushing pieces  116  of the third metal portion  113  is inserted. The fourth pushing pieces  116  are inserted into the fourth pushing piece holes  120  respectively and protrude to a back surface side of the sixth resin portion  112 . The fifth pushing pieces  117  are disposed along an outer peripheral edge of the sixth resin portion  112  and protrude to the back surface side of the sixth resin portion  112 . 
     The sixth resin portion  112  is provided with the second locking protrusions  114 . The second locking protrusions  114  are snap-fits, and the second locking protrusions  114  engage with the second locking concave portions  115  respectively to fix the fifth resin portion  111  and the sixth resin portion  112 . Each of the second locking protrusions  114  and each of the second locking concave portions  115  are provided with contact portions that come into contact with each other. In the third metal portion  113 , eighth through holes  121  are disposed at positions corresponding to the fourth positioning protrusions  119  respectively. 
     Next, a fourth example of a rotating body will be described with reference to  FIGS.  19  and  20   . A fourth rotating body  140  can be applied to the rotating body of the coin hopper described above. The fourth rotating body  140  is an example in which a pushing piece is not integrated but divided and provided for each separation hole.  FIG.  19    is a first view showing a structure of an example of the fourth rotating body.  FIG.  19    shows an example of a divided pushing piece.  FIG.  20    is a second view showing a structure of an example of the fourth rotating body.  FIG.  20    shows an example of a rotating body that fixes the divided pushing piece. 
     A fourth metal portion  130  is obtained by cutting out a portion including the fourth pushing piece  116 , the fifth pushing piece  117 , and the eighth through hole  121  of the third metal portion  113  described with reference to  FIGS.  16  and  17   . The fourth metal portion  130  is formed by bending a sheet metal to form the fourth pushing piece  116  and the fifth pushing piece  117 , and forming a hole in the sheet metal to form the eighth through hole  121 . A size can be reduced and a material can be saved by providing a plurality of pushing pieces. Since a plurality of components are to be assembled, a manufacturing process becomes complicated. 
     In the fourth rotating body  140 , the fourth metal portion  130  is sandwiched between a seventh resin portion  141  and an eighth resin portion  142 . The fourth pushing pieces  116  and the fifth pushing pieces  117  protrude from a back surface side of the fourth rotating body  140 . 
     A hole similar to the sixth shaft hole  122  described with reference to  FIGS.  16    and  17  is provided at a rotation center of the fourth rotating body  140 . The fourth rotating body  140  is fixed to a rotation shaft by inserting the rotation shaft into the sixth shaft hole  122 . 
     In the seventh resin portion  141 , protrusions similar to the fourth positioning protrusions  119  described with reference to  FIGS.  16  and  17    is provided in a concave portion of the seventh resin portion  141  that houses the fourth metal portion  130 . When the fourth metal portion  130  is housed in the concave portion, the eighth through holes  121  are fitted to the fourth positioning protrusions  119 . The fourth metal portion  130  is prevented from looseness in the rotation direction of the fourth rotating body  140  by the fourth positioning protrusions  119 . 
     The eighth resin portion  142  is provided with four locking protrusions and locking concave portions similar to the second locking protrusions  114  and the second locking concave portions  115  described with reference to  FIGS.  16  and  17   . The seventh resin portion  141  is provided with locking concave portions at positions corresponding to the second locking protrusions  114 . When the second locking protrusion  114  is engaged with each of the locking concave portions, the seventh resin portion  141  and the eighth resin portion  142  sandwiches the fourth metal portion  130 , and the seventh resin portion  141  and the eighth resin portion  142  are fixed to one another. 
     INDUSTRIAL APPLICABILITY 
     The present invention can be applied to a coin hopper that discharges coins one by one and a coin processing device equipped with the coin hopper. 
     REFERENCE SIGNS LIST 
     
         
         
           
               1  coin hopper 
               2  container 
               3  main body 
               4  payout opening 
               5  rotating body 
               6  separation hole 
               7  base 
               8  guide portion 
               9  identification hole 
               10  coin 
               11  motor 
               12  stirring portion 
               13  control pin 
               14  discharge sensor 
               15  fixed roller 
               16  moving roller 
               17  outer wall 
               18  stirring blade 
               20  first resin portion 
               21  second resin portion 
               22  metal portion 
               23  shaft hole 
               24  shaft locking groove 
               25  pushing piece 
               26  reverse rotation piece 
               27  discharge groove 
               28  first step portion 
               29  second step portion 
               30  pushing piece hole 
               31  concave portion 
               32  outer peripheral convex portion 
               33  positioning protrusion 
               34  central convex portion 
               35  inner peripheral convex portion 
               36  base portion 
               37  locking and fitting groove 
               38  first through hole 
               39  second through hole 
               40  third through hole 
               41  fourth through hole 
               42  locking and fitting protrusion 
               43  thick portion 
               44  arm side surface 
               50  coin processing device 
               51  separation unit 
               52  identification unit 
               53  sorting unit 
               54  conveyance pin 
               55  sorting flap 
               56  slider 
               57  guide path 
               58  rail 
               59  discharge belt 
               60  storage container 
               61  reject passage 
               62  payout tray 
               75  locking protrusion 
               76  wall portion 
               77  second pushing piece 
               78  third pushing piece 
               91  peripheral surface 
               92  locking concave portion 
               94  first buffer portion 
               95  second buffer portion 
               96  third buffer portion