Specification Patent application title: Paper sheet storage device and paper sheet storage method Technical field [0001] 　BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a sheet storage device and a sheet storage method. Background art [0002] 　For example, a bill handling apparatus such as an ATM (Automated Teller Machine), a CD (Cash Dispenser), a TCR (Teller Cash Recycler), etc. has a sheet storage device for temporarily storing deposited bills. As a paper sheet accommodation device of this type, a configuration is known in which bills are accommodated by winding the bills on a drum together with a tape supplied from a reel. [0003] 　In the paper sheet accommodating apparatus having such a configuration, for example, when the tape is wound, the tape is pulled out from the reel by the rotation of the drum, and the shaft of the reel and the shaft connected with the torque limiter are one-way clutch etc. The tape is given tension by fixing it with Further, in such a paper sheet accommodating apparatus, for example, when the tape is rewound, the tape is fed out from the drum by the reverse rotation of the drum, and the tape is tensioned by winding the tape at a higher speed than the reel. Have In such a paper sheet accommodating device, the rotational speed difference between the drum and the reel is absorbed by the operation of the torque limiter. Prior art documents Patent document [0004] Patent Document 1: Japanese Patent Application Publication No. 2009-107824 Summary of the invention Problems that the Invention is to Solve [0005] 　However, in the prior art described above, when the length of the tape is increased in order to increase the storage capacity of the paper sheet storage device, the reel supplies the tape and the drum includes the tape as the tape rolls up. The diameter of the reel becomes smaller and the winding diameter of the drum containing the tape becomes larger. However, since the operating torque of the torque limiter is constant, there is a problem that the larger the winding diameter, the larger the pulling load when pulling the tape from the reel. [0006] 　The disclosed technology has been made in view of the above, and, for example, in a paper sheet accommodating apparatus, a paper sheet accommodation apparatus which reduces the pulling out load when the tape is drawn out from the reel when the tape is wound up by the drum. An object of the present invention is to provide an apparatus and a method of containing sheets. Means to solve the problem [0007] 　In one example of the disclosed technology, a sheet accommodating device includes a reel for supplying a wound strip, a drum for winding sheets together with the strip supplied from the reel, and a strip by rotation of the drum. At the time of winding, a rotation unit for transmitting the rotation of the reel moving around to the drum to assist the rotation of the drum is provided. Effect of the invention [0008] 　According to an example of the disclosed technology, for example, in a paper sheet accommodating apparatus, it is possible to reduce the pulling load when pulling out the tape from the reel at the time of winding the tape by the drum. Brief description of the drawings [0009] FIG. 1 is a schematic view showing an entire bill handling apparatus including a paper sheet accommodation apparatus according to an embodiment. FIG. 2 is a perspective view showing a paper sheet accommodation apparatus according to the embodiment. FIG. 3 is a plan view showing a paper sheet accommodation apparatus according to the embodiment. [FIG. 4] FIG. 4 is a rear view showing a sheet accommodating device according to an embodiment. FIG. 5A is a side view showing a paper sheet accommodation apparatus according to an embodiment. FIG. 5B is a cross-sectional view taken along the line AA shown in FIG. FIG. 6A is a schematic view showing the rotation of the gear at the time of the winding operation of the paper sheet accommodating device according to the embodiment. FIG. 6B is a schematic view showing the rotation of the gear at the time of the rewinding operation of the sheet accommodating device according to the embodiment. FIG. 7A is a schematic view showing a state in which all the tapes are wound on a drum in the paper sheet accommodating apparatus according to the embodiment. FIG. 7B is a schematic view showing a state in which the tape is not wound up on the drum in the sheet accommodating device according to the embodiment. FIG. 8A is a schematic view showing transmission of rotation of a gear at the time of winding operation of the paper sheet accommodating device according to the embodiment. FIG. 8B is a schematic view showing transmission of rotation of a gear at the time of rewinding operation of the paper sheet accommodating device according to the embodiment. FIG. 9 is a diagram showing the relationship between the winding diameter of the winding drum at the time of winding of the tape by the winding drum and the drawing load at the time of drawing the tape from the reel, as compared to the prior art. It is. MODE FOR CARRYING OUT THE INVENTION [0010] 　Hereinafter, an embodiment of a sheet accommodation device and a sheet accommodation method disclosed in the present application will be described in detail based on the drawings. The following embodiments do not limit the sheet accommodation device and the sheet accommodation method disclosed in the present application. Example [0011] [Arrangement of Banknote Handling Device] 　FIG. 1 is a schematic view showing the entire banknote handling device including the paper sheets accommodation device according to the embodiment. As shown in FIG. 1, the banknote handling apparatus 1 according to the embodiment includes a deposit / withdrawal unit 3 for depositing / dispensing a banknote 2 and a discrimination unit 4 for discriminating authenticity of the banknote 2 deposited to the deposit / withdrawal unit 3. Have. Further, the banknote handling apparatus 1 takes in the banknotes 2 conveyed from the discrimination unit 4 from the carry-in / out unit 20, temporarily stores the temporary storage unit 5, which temporarily winds around the drum 11D together with a tape which is an example of a strip It has a plurality of storage units 6 for storing the bills 2 sent from the unit 5. [0012] 　Further, the bill handling apparatus 1 has a transport mechanism 7 for transporting the bill 2. The transport mechanism 7 includes a transport path 7 a that transports the banknote 2 between the deposit / withdrawal unit 3, the discrimination unit 4, the temporary storage unit 5, and the storage unit 6. Moreover, the banknote handling apparatus 1 has the control part 8 which controls the deposit or withdrawal part 3, the discrimination part 4, the temporary accommodating part 5, the storage part 6, and the conveyance mechanism 7 respectively. [0013] 　The temporary storage unit 5 incorporated in the bill handling apparatus 1 corresponds to the paper sheet storage apparatus of the embodiment. Hereinafter, the temporary storage unit 5 will be described in other words as the paper sheet storage device 5. In the present embodiment, the bill 2 is used as an example of a paper sheet, but it is not limited to the bill. Paper sheets include, for example, securities such as bills, checks, gift certificates, various securities, and stock certificates. [0014] [Arrangement of Sheet Storage Device] 　FIG. 2 is a perspective view showing a sheet storage device according to the embodiment. FIG. 3 is a plan view showing the paper sheet accommodation apparatus according to the embodiment. FIG. 4 is a rear view showing the sheet accommodating device according to the embodiment. [0015] 　The paper sheet storage device 5 is provided adjacent to the transport path 7 a, and has a carry-in / out unit 20 for carrying the banknote 2 in and out between the transport path 7 a and the paper sheet storage device 5. Further, the paper sheet accommodation device 5 includes a gear 11GA and a drum 11D which are pivotally supported by the shaft 11. Further, the paper sheet accommodation device 5 has a gear 12 GB pivotally supported by the shaft 12. Further, the paper sheet accommodation device 5 has gears 13GC and 13GD axially supported by the shaft 13. Further, the paper sheet accommodation device 5 has a gear 14 GE pivotally supported by the shaft 14 and reels 14 L and 14 R. Further, the paper sheet accommodation device 5 has a gear 15 GF and reels 15 L and 15 R which are pivotally supported by the shaft 15. Further, the paper sheet accommodation device 5 includes gears 16GH and 16GI pivotally supported by the shaft 16. [0016] 　Below, in FIG. 2, let the payment direction to the carrying in / out part 20 of the banknote 2 be X direction, let a payment direction be a positive direction, and let the payment direction be a negative direction. Further, in FIG. 2, a direction along the shaft 11 is taken as a Y direction, a direction from the gear 11GA to the drum 11D is a positive direction, and a direction from the drum 11D to the gear 11GA is a negative direction. Further, in FIG. 2, the upper and lower sides of the sheet accommodating device 5 are taken as the Z direction, the direction from the shaft 15 toward the shaft 14 is taken as the positive direction, and the direction from the shaft 14 toward the shaft 15 is taken as the negative direction. Moreover, below, let the clockwise direction and the counterclockwise direction be the respective rotational directions when the sheet accommodating device 5 is viewed in the positive direction of Y. Each direction of X, Y, Z is substantially orthogonal. [0017] 　The reels 14L and 14R supply the wound tapes 28L and 28R, respectively. The reels 14L and 14R are disposed above the drum 11D, supported by the common shaft 14, and disposed at predetermined intervals in the direction of the shaft 11 of the drum 11D. The reels 14L and 14R are supported by the shaft 14 via a torque limiter (not shown), and the tension generated in the tapes 28L and 28R is restricted to a predetermined tension or less. [0018] 　Similarly, the reels 15L and 15R respectively supply the wound tapes 29L and 29R. The reels 15L and 15R are disposed below the drum 11D, supported by the common shaft 15, and disposed at a predetermined interval in the direction of the shaft 11 of the drum 11D. The reels 15L and 15R are supported by the shaft 15 via a torque limiter (not shown), and the tension generated in the tapes 29L and 29R is restricted to a predetermined tension or less. [0019] 　A traveling path of the tape 28L is formed between the reel 14L and the drum 11D, and a pulley 21L is disposed on the traveling path of the tape 28L. The pulley 21L is rotatably supported by a support shaft (not shown), and movably supports the tape 28L along the traveling path. Similarly, a traveling path of the tape 28R is configured between the reel 14R and the drum 11D, and a pulley 21R is disposed on the traveling path of the tape 28R. The pulley 21R is rotatably supported by a support shaft (not shown), and movably supports the tape 28R along the traveling path. [0020] 　Further, a traveling path of the tape 29L is formed between the reel 15L and the drum 11D, and pulleys 22L, 23L, 24L are disposed on the traveling path of the tape 29L. The pulleys 22L, 23L, 24L are rotatably supported by a support shaft (not shown) via, for example, a bearing member (not shown) such as a bearing, and the tape 29L is supported movably along the traveling path. doing. Similarly, a traveling path of the tape 29R is configured between the reel 15R and the drum 11D, and pulleys 22R, 23R, and 24R are disposed on the traveling path of the tape 29R. The pulleys 22R, 23R, 24R are rotatably supported by a support shaft (not shown) via, for example, a bearing member (not shown) such as a bearing, and the tape 29R is supported movably along the traveling path. doing. [0021] 　As shown in FIG. 2, the pulleys 21L and 22L and the pulleys 21R and 22R sandwich the banknote 2 between the tapes 28L and 29L and the tapes 28L and 29L before winding the banknote 2 on the drum 11D. A loading and unloading unit 20 is formed. [0022] 　The drum 11D is supported by the shaft 11. Drum 11D shown in FIG. 2 is a drum continuously formed in the shaft direction (Y direction) of the shaft 11 as an example. On the drum 11D, the bills 2 are wound in a state of being sandwiched between the tapes 28L and 28R supplied from the reels 14L and 14R and the tapes 29L and 29R supplied from the reels 15L and 15R. [0023] 　The shaft 11 is an input shaft for driving force, and the drum driving mechanism 30 is connected. The drum drive mechanism 30 is, for example, a motor. The control unit 8 controls the drum drive mechanism 30, and rotates the drum 11D clockwise when the sheet accommodating device 5 is viewed in the positive direction of Y when the tapes 28L to 29R are wound up. Further, the control unit 8 controls the drum drive mechanism 30, and rotates the drum 11D in the counterclockwise direction when the sheet accommodating device 5 is viewed in the positive direction of Y when rewinding the tapes 28L to 29R. . [0024] 　In the present embodiment, tapes 28L to 29R made of resin film are used as an example of the strip, but a tape made of another material or a strip other than the tape may be used if necessary. Further, in the present embodiment, two tapes of the tapes 28L and 28R are used as the upper tape, and two tapes of the tapes 29L and 29R are used as the lower tape, and the upper tape and the lower tape sandwich the bill 2 from above and below. , And is wound around the drum 11D, but is not limited thereto. For example, one or more tapes may be used as the upper and lower tapes. Alternatively, the upper tape and the lower tape sandwich the bill 2 from above and below, and the invention is not limited to winding around the drum 11D. For example, the upper tape may be used to press the bill 2 on the outer peripheral surface of the drum 11D. May be In this case, the shaft 15, the reels 15L and 15R, the gear 15GF and the like can be omitted. [0025] 　Further, in the present embodiment, the drum 11D shown in FIG. 2 is a drum continuously formed in the shaft direction (Y direction) of the shaft 11 as an example, but the present invention is not limited to this configuration. A set of plural drums separated in the shaft direction (Y direction) of the shaft 11 may be used. [0026] [Connection Relationship Between Shaft, Gear, and Reel] 　Next, the connection relationship between the shaft, gear, and reel will be described with reference to FIGS. 5A and 5B. FIG. 5A is a side view showing a sheet accommodating device according to an embodiment. FIG. 5B is a cross-sectional view of the sheet accommodating device according to the embodiment, taken along line AA. The AA cross section is a cross section of the longitudinal cross section along the alternate long and short dash line shown in FIG. 3 as viewed in the A direction. As shown in FIG. 5A, the shaft 11 of the drum 11D is connected to the gear 11GA. The gear 11GA is connected to the gear 13GC via a gear 12GB. The gear 12 GB is an idler gear that connects the gear 11 GA and the gear 13 GC. [0027] 　A one-way clutch (not shown) is attached to the gear 13GC and disposed coaxially with the gear 13GD via the shaft 13. The gear 13GD is fixed to the shaft 13. The gear 13 GD is connected (transmitted) or disconnected (cut off) of power by the one-way clutch in accordance with the rotation direction of the gear 13 GC. [0028] 　The one-way clutch is of a sprag type or cam type, and the power is connected and disconnected according to the speed difference between the outer ring and the inner ring. For example, in the one-way clutch, when the outer ring side is rotated clockwise, the inner ring side is de-energized and slips. In the one-way clutch, when the outer ring side is rotated counterclockwise, the inner ring side is connected with power and rotates counterclockwise. In the one-way clutch, when the inner ring side is rotated counterclockwise, the outer ring side is disconnected for power and runs idle. In the one-way clutch, when the inner ring side is rotated clockwise, the outer ring side is connected with power and rotates clockwise. [0029] 　The gear 13GD is connected to the gears 14GE, 15GF, 16GH. In the shaft 14 on which the gear 14GE is disposed, the reels 14L and 14R are disposed via a torque limiter (not shown). The reels 15L and 15R are disposed on the shaft 15 on which the gear 15GF is disposed via a torque limiter (not shown). [0030] 　A one-way clutch is attached to the gear 16GH and disposed coaxially with the gear 16GI via the shaft 16. The gear 16 GI is fixed to the shaft 16. The gear 16GI is connected and disconnected by a one-way clutch in accordance with the rotation direction of the gear 16GH. [0031] 　The shaft 13, gears 13GC and 13GD, the shaft 14, the gear 14GE, the shaft 15, the gear 15GF, the shaft 16 and the gears 16GH and 16GI are reels which are brought together for winding when winding the strip by rotation of the drum. These are an example of a transmission part which transmits rotation of a to a drum and assists rotation of a drum. In the present embodiment, “co-rotating” means, for example, that the strip material is supplied from the reels 14L to 15R according to the winding of the strip material (tapes 28L to 29R) on the drum 11D by the rotation of the drum 11D. It means that the reels 14L to 15R rotate in conjunction with being pulled out. [0032] 　The shaft 13 and the gears 13GC and 13GD are an example of a first transmission member to which the rotation of the drum by the drive unit is transmitted. The shaft 16 and the gears 16GH and 16GI are examples of the second transmission member. [0033] [Rotation of Gears in Winding Operation] 　FIG. 6A is a schematic view showing the rotation of gears in the winding operation of the paper sheet accommodating apparatus according to the embodiment. Hereinafter, the broken arrows indicate the rotation caused by bringing the tapes 28L to 29R together with the winding operation of the drum 11D. Further, solid arrows indicate rotation due to the transmission of the rotation of the gear 11GA during the winding operation of the drum 11D. [0034] 　When the drum 11D is rotated clockwise by the drum drive mechanism 30, the gear 13GC rotates clockwise (direction C1) via the gears 11GA (rotation in the direction A1) and 12 GB (rotation in the direction B1). At this time, since the one-way clutch of the gear 13GC is disposed in the free state, power is not transmitted from the gear 13GC to the shaft 13. [0035] 　On the other hand, the tapes 28L-29R are wound around the drum 11D, and the tapes 28L-29R are pulled out from the reels 14L-15R, respectively. Therefore, as shown in FIG. 6A, the reels 14L and 14R are rotated counterclockwise (broken line arrows). The rotation of the co-rotation causes the shafts 14, 15 and the gears 14GE, 15GF to rotate counterclockwise (direction E1, direction F1) via a torque limiter (not shown). [0036] 　Then, the counterclockwise rotation of the gears 14GE and 15GF is transmitted, and the gear 13GD rotates clockwise (direction D1). At this time, the relationship between the rotation speed of the gear 13GC and the rotation speed of the gear 13GD is set as "the rotation speed of the gear 13GC> the rotation speed of the gear 13GD". As a result, in the one-way clutch (not shown) of the gear 13GC, the powers of the gear 13GC and the gear 13GD are not connected, and the free state in which the rotation on the outer ring side is fast is maintained. [0037] 　In addition, the gear 13GD is connected to the gear 16GH. The gear 16GH transmits power to the shaft 16 via the one-way clutch, and the shaft 16 rotates counterclockwise. Here, since the shaft 16 is fixed to the gear 16GI, the gear 16GH tries to rotate counterclockwise (direction H1). However, since the gear 16GI is connected to the gear 11GA, the gear 16GI rotates clockwise (direction A1) at the speed of the drum 11D. [0038] 　At this time, the one-way clutch (not shown) of the gear 16GH makes the rotation on the outer ring side that transmits the co-rotation from the reels 14L to 15R faster than the rotation on the inner ring side transmitted from the gear 16GI. The side is connected when it is counterclockwise. That is, “rotational speed of gear 16GH> rotational speed of gear 16GI” is set. As a result, on the shaft 16 via the one-way clutch (not shown), the rotational force by the co-rotation of the reels 14L to 15R and the rotational force of the drum 11D by the drum drive mechanism 30 collide. [0039] 　Here, since the drum 11D is rotating in the A1 direction at a constant speed by the drum drive mechanism 30, the rotation of the gears 16GI in the I1 direction due to the co-rotation of the reels 14L to 15R is suppressed (the brake is applied ) Will be. On the other hand, since the rotation of the gear 16GI in the I1 direction by the co-rotation of the reels 14L to 15R is a force to further rotate the drum 11D in the A1 direction, the rotational force to assist the rotation of the drum 11D Become. The difference in speed is eliminated by torque limiters (not shown) disposed between the reels 14L to 15R and the shafts 14 and 15 which are reel axes. [0040] [Rotation of Gears During Rewinding Operation] 　FIG. 6B is a schematic view showing the rotation of gears during the rewinding operation of the paper sheet accommodating device according to the embodiment. When the drum 11D is rotated counterclockwise by the drum drive mechanism 30, the gear 13GC rotates counterclockwise (direction C2) via the gears 11GA (rotation in the direction A2) and 12 GB (rotation in the direction B2). At this time, the one-way clutch (not shown) of the gear 13GC is brought into the connected state by rotation in the reverse direction to winding ("the number of rotations of the gear 13GC> the number of rotations of the gear 13GD"). Power is transmitted to the Thereby, the gear 13GD rotates counterclockwise (direction D2), and the gears 14GE, 15GF, and 16GH rotate clockwise (direction E2, direction F2, direction H2). [0041] 　By this gear connection method, the rotational speeds of the gear 11GA and the gears 14GE and 15GF are set so as to satisfy “the rotational speed of the gear 11GA the number of rotations of the gear 16GI") ), The outer ring side is in the cut state (free state) when clockwise. By doing this, the one-way clutch of the gear 16GH is in a disconnected state (free state) where power is not transmitted. [0044] 　Next, the procedure of deriving the gear ratio according to this embodiment will be described. In the following, first, the condition of the gear ratio at the time of rewinding operation is derived, and then the condition of the gear ratio at the time of winding is derived. The rewinding operation is an operation in which the drum 11D unwinds the wound tapes 28L to 29R and rewinds them to the reels 14L to 15R. The winding operation is an operation in which the drum 11D winds the tapes 28L-29R supplied from the reels 14L-15R. [0045] (Setting of Gear Ratio in Rewinding Operation) A 　procedure for deriving the gear ratio in rewinding operation will be described below. At the time of rewinding, the rotational speed of the gear 11GA and the gears 14GE and 15GF is set as "the rotational speed of the gear 11GA