JP6828456B2 - Media processing equipment - Google Patents

Description

The present invention relates to a medium processing device, and is suitable for application to, for example, an automated teller machine (ATM) in which a medium such as a banknote is inserted to perform a desired transaction.

The banknote acceptor described in Patent Document 1 has a configuration in which a thickness reference roller, a thickness detection roller, and a displacement detection sensor are fixed to an integrated sensor frame in order to accurately detect the thickness of a banknote in the thickness detection device. (See, for example, Patent Document 1).

In the bill discrimination device described in Patent Document 2, the bearings at both ends of the guide roller are pressed against the pressing portion of the magnetic sensor by a spring in order to accurately read the bill passing through the gap between the guide roller and the magnetic sensor in the magnetic detector. The configuration is such that the accuracy of the gap between the guide roller and the magnetic sensor is improved (see, for example, Patent Document 2).

Japanese Unexamined Patent Publication No. 2014-169164 (Fig. 1) Japanese Unexamined Patent Publication No. 2013-69154 (Fig. 6)

In the banknote acceptor described in Patent Document 1, since the thickness reference roller and the thickness detection roller are fixed to an integrated sensor frame, jam removability is improved when a banknote jam occurs in the thickness detection device. There is a problem that it is bad.

Regarding the magnetic detection unit of the banknote acceptor described in Patent Document 2, consider a case where the guide roller is replaced with a thickness reference roller and the magnetic sensor is replaced with a thickness detection roller and a thickness detection roller frame. In order to accurately detect the thickness of the bill, the thickness detection roller is a thickness reference roller so that the thickness detection roller does not bounce on the bill surface when the bill is sandwiched between the thickness detection roller and the thickness reference roller. It is pressed with a strong pressing force toward. At this time, in order to prevent the thickness reference roller from separating from the thickness detection roller frame, the thickness reference roller is pressed against the pressing portion of the thickness detection roller frame with a load equal to or greater than the pressing force of the thickness detection roller. At this time, if the pressing portion and the mounting portion of the spring pressing the thickness reference roller are formed by the resin frame, the resin frame will continue to receive a strong load, and the resin frame will be deformed by creep, and the thickness of the bill will increase. There is a problem that the detection accuracy cannot be maintained.

The present invention has been made in consideration of the above points, and an object of the present invention is to propose a medium processing apparatus capable of improving the detection accuracy of the thickness of a medium while maintaining the jam medium removing performance.

In order to solve such a problem, in the medium processing apparatus of the present invention, the first frame including the first transfer guide and the medium arranged opposite to the upper side of the first frame and between the first transfer guides. A second frame including a second transport guide forming the transport path, a thickness detection roller provided in the second frame for detecting the thickness of the medium passing through the transport path, and a thickness detection roller provided in the first frame. A thickness reference roller which is arranged to face the thickness detection roller and conveys the medium between the thickness detection roller and a bearing provided coaxially with the thickness reference roller are provided, and the second frame is in contact with the bearing. The first frame has a contact portion, and the first frame has an elastic member that urges the bearing toward the contact portion side on the opposite side of the position where the contact portion of the bearing abuts, and an elastic member on the opposite side of the elastic member with respect to the bearing. It has a bearing support portion that comes into contact with the bearing urged by the elastic member .

Thereby, in the present invention, the transport path can be opened to the outside by providing the first transport guide in the first frame and the second transport guide in the second frame separate from the first frame, and the jam medium removal performance. The load on the first frame can be reduced while maintaining the above.

According to the present invention, it is possible to realize a medium processing apparatus capable of improving the detection accuracy of the thickness of the medium while maintaining the jam medium removing performance.

It is a perspective view which shows the structure of the cash automatic teller machine. It is a left side view which shows the structure of the banknote deposit / withdrawal machine. It is a left side view which shows the structure of the discrimination part. It is a rear view which shows the structure (1) of the thickness information acquisition part. The configuration (2) of the thickness information acquisition unit is shown, and is a cross-sectional view taken along the line AA in FIG. The configuration (3) of the thickness information acquisition unit is shown, and is a view taken along the line BB in FIG. The configuration (4) of the thickness information acquisition unit is shown, and is a cross-sectional view taken along the line CC in FIG. The configuration (5) of the thickness information acquisition unit is shown, and is a cross-sectional view taken along the line DD in FIG. The operation of the thickness information acquisition unit is shown, (A) is a diagram corresponding to FIG. 4, and (B) and (C) are diagrams corresponding to FIG. It is a rear view which shows the structure (1) of the conventional thickness information acquisition part. The configuration (2) of the conventional thickness information acquisition unit is shown, and is a cross-sectional view taken along the line A'-A'in FIG. The configuration (3) of the conventional thickness information acquisition unit is shown, and is a cross-sectional view taken along the line C'-C'in FIG. The configuration (4) of the conventional thickness information acquisition unit is shown, and is a D'-D'arrow view in FIG. It shows the operation of the conventional thickness information acquisition part, and is the figure corresponding to FIG.

Hereinafter, embodiments for carrying out the invention (hereinafter referred to as embodiments) will be described with reference to the drawings. It should be noted that each figure is merely schematically shown to the extent that the present invention can be fully understood. Therefore, the present invention is not limited to the illustrated examples. Further, in each figure, common components and similar components are designated by the same reference numerals, and duplicate description thereof will be omitted. Further, in the following description, upstream and downstream mean the transport direction of banknotes. Hereinafter, for convenience, the upstream side will be described as the front side of the discrimination unit 18, and the downstream side will be described as the rear side of the discrimination unit 18.

[1. Embodiment]
[1-1. Configuration of automated teller machines]
As shown in the appearance in FIG. 1, the automatic teller machine 1 is mainly composed of a box-shaped housing 2. For example, it is installed in a financial institution or the like, and a deposit transaction, a withdrawal transaction, or the like is performed with a customer. Make cash transactions. The housing 2 is provided with a customer service unit 3 at a position on the front side thereof where it is easy for customers to insert bills and operate with a touch panel while facing each other.

The customer reception unit 3 is provided with a card entrance / exit 4, a deposit / withdrawal port 5, an operation display unit 6, a numeric keypad 7, and a receipt issuing port 8, and directly exchanges cash, passbooks, etc. with the customer and makes transactions. Notify information about and accept operation instructions. The card inlet / outlet 4 is a portion where various cards such as a cash card are inserted or ejected. A card processing unit (not shown) for reading the account number and the like magnetically recorded on various cards is provided on the back side of the card entrance / exit 4. The deposit / withdrawal port 5 is a portion where banknotes to be deposited by the customer are inserted and banknotes to be withdrawn to the customer are discharged. The operation display unit 6 is integrated with an LCD (Liquid Crystal Display) that displays an operation screen at the time of a transaction and a touch panel for selecting a transaction type, a personal identification number, a transaction amount, and the like. The numeric keypad 7 is a physical key that accepts inputs such as numbers "0" to "9", and is used when inputting a personal identification number, transaction amount, or the like. The receipt issuing port 8 is a portion that issues a receipt on which transaction details and the like are printed at the end of transaction processing.

Inside the housing 2, a main control unit 9 that controls and controls the entire automatic teller machine 1 and a bill deposit / withdrawal machine 10 that performs various processing related to bills are provided. The main control unit 9 is mainly composed of a CPU (Central Processing Unit) (not shown), and is a predetermined program from a storage unit including a ROM (Read Only Memory), a RAM (Random Access Memory), a hard disk drive, a flash memory, and the like. Is read and executed to control each part and perform various processes such as deposit transaction and withdrawal transaction.

In the following, the side of the automated teller machine 1 that the user faces is the front side, the opposite side is the rear side, the left and right sides of the user facing the front side are the left side and the right side, respectively, and the upper side and the right side. The lower side is defined and explained.

[1-2. Internal configuration of banknote deposit / withdrawal machine]
As shown in FIG. 2, the bill deposit / withdrawal machine 10 is mainly composed of a box-shaped deposit / withdrawal machine housing 11, and the control unit 12 is a unit (deposit / withdrawal unit 16, discrimination unit 18, temporary holding unit 20). , The forgotten collection storage 22, the transport unit 24, the bill storage 26, and the reject storage 28) are controlled and controlled.

The control unit 12 is mainly composed of a CPU (not shown), and controls each unit to perform a deposit transaction by reading a predetermined program from a storage unit 14 including a ROM, RAM, a hard disk drive, a flash memory, or the like and executing the program. And withdrawal transactions, etc.

On the upper side of the inside of the banknote deposit / withdrawal machine 10, there are a deposit / withdrawal unit 16, a discrimination unit 18 for determining the denomination and authenticity of banknotes, a temporary hold unit 20 for temporarily holding deposit / withdrawal bills, and a deposit / withdrawal unit 16. A forgotten collection 22 and the like for storing forgotten banknotes that the customer has forgotten to take are provided.

The deposit / withdrawal unit 16 is arranged in the upper part of the front side in the deposit / withdrawal machine housing 11, separates the bills inserted by the customer one by one, and feeds them out to the transport unit 24.

The transport unit 24 transports rectangular banknotes in the lateral direction along a transport path shown by a solid line in the figure by means of a roller, a belt, or the like (not shown). The transport unit 24 transports banknotes so that the discriminating unit 18 is inserted in the front-rear direction, and connects the rear side of the discriminating unit 18 to the temporary holding unit 20, the bill storage 26, and the forgotten collection 22 respectively. There is. Further, the transport unit 24 connects the front side of the discrimination unit 18, the deposit / withdrawal unit 16, and the reject storage 28. A selector (indicated by a triangle in the figure) is provided at the branch point of the transport unit 24, and the bill is switched by rotating under the control of the control unit 12.

The discrimination unit 18 discriminates the denomination and authenticity of the bill, the degree of damage, etc. (correct loss) using an optical element, a magnetic detector, or the like while transporting the bill inside the bill, and determines the discrimination result. Notify the control unit 12. Further, the discrimination unit 18 reads and identifies the serial number from the image data of the captured banknote, and notifies the control unit 12 of the identification result. In response to this, the control unit 12 determines the destination of the banknotes based on the acquired discrimination result and identification result.

The temporary holding portion 20 is arranged at a position adjacent to the transport portion 24 at a substantially central portion in the front-rear direction in the deposit / withdrawal machine housing 11, adopts a so-called tape escrow method, and has a cylindrical drum. The banknote is stored by wrapping the banknote together with the tape around the peripheral side surface of the scrow, and the banknote is unwound by peeling the tape from the peripheral side surface.

The forgotten collection 22 is arranged at a position adjacent to the upper portion of the rear side of the deposit / withdrawal machine housing 11 and above the transport portion 24, and has a space for storing banknotes inside. When the forgotten banknotes forgotten by the customer are conveyed from the deposit / withdrawal unit 16 by the carrying unit 24, the forgotten collection storage 22 stores the forgotten banknotes inside.

Below the inside of the bill deposit / withdrawal machine 10, a reject storage 28 for storing bills that should not be reused and five bill storages 26 for storing reusable bills are provided.

The reject storage 28 is arranged in the lower part of the front side in the deposit / withdrawal machine housing 11, is formed in a rectangular parallelepiped shape long in the vertical direction, and has a space for accumulating and storing banknotes inside. When the banknotes that are determined by the discrimination unit 18 and the control unit 12 to be severely damaged and should not be reused are transported by the transport unit 24, the reject storage 28 stores the banknotes inside.

Behind the reject storage 28 in the deposit / withdrawal machine housing 11, five bill storages 26 (26A, 26B, 26C, 26D and 26E) are provided in order from the front side to the rear side. Each banknote storage 26 has the same structure, is formed in a rectangular parallelepiped shape long in the vertical direction, and has a space for accumulating and storing banknotes inside. In each banknote storage 26, the denomination of the banknote to be stored is preset. When the banknotes that are judged by the discrimination unit 18 and the control unit 12 to be reusable with a small degree of damage are transported by the transport unit 24 according to the denomination, the bill storage 26 is said to be the same. Banknotes are collected and stored inside. Further, when the bill storage 26 receives an instruction to pay out the bills from the control unit 12, the bill storage 26 separates the accumulated bills one by one and pays them out, and delivers them to the transport unit 24.

In such a configuration, in the automatic teller machine 1, the main control unit 9 and the control unit 12 control each unit based on the identification result and the identification result of the banknotes by the identification unit 18, and the banknote deposit processing, the withdrawal processing, etc. I do.

That is, in the automatic teller machine 1, when a customer selects a deposit transaction via the operation display unit 6 and a bill is inserted into the deposit / withdrawal unit 16, the inserted bill is inserted from the deposit / withdrawal unit 16. It is conveyed to the discrimination unit 18 one by one and is conveyed in the discrimination unit 18. Here, the automated teller machine 1 transports the depositable banknotes determined to be depositable based on the discrimination result and the identification result of the discrimination unit 18 to the temporary holding unit 20 and temporarily stores them. On the other hand, the automated teller machine 1 returns the deposit rejected banknotes determined to be unsuitable for deposit to the deposit / withdrawal unit 16 and returns them to the customer. After that, when the deposit amount is confirmed by the customer, the cash automatic teller machine 1 collects the banknotes stored in the temporary holding unit 20 that are determined to be storable according to the denomination. Transport to 26 for storage. On the other hand, the automated teller machine 1 transports banknotes determined to be unsuitable for storage to the reject storage 28.

On the other hand, at the time of withdrawal transaction, when the customer selects the withdrawal transaction via the operation display unit 6 and the withdrawal amount is input, the automatic cash transaction device 1 requires the number of banknotes for each denomination according to the requested amount. Is recognized, and according to the number of banknotes for each denomination, the banknotes are taken out from each banknote storage 26 and transported to the discrimination unit 18 and transported in the discrimination unit 18 to obtain the discrimination result and the identification result. Here, the automated teller machine 1 conveys the withdrawable banknotes determined to be withdrawable based on the discrimination result and the identification result of the discrimination unit 18 to the deposit / withdrawal unit 16. On the other hand, the automatic teller machine 1 transports and stores the withdrawal reject banknotes determined to be unsuitable for withdrawal to the reject storage 28. Then, when the requested amount of banknotes is accumulated in the deposit / withdrawal unit 16, the automatic teller machine 1 opens the shutter. As a result, the banknotes accumulated in the deposit / withdrawal unit 16 can be received, and the customer receives the banknotes. After that, the automated teller machine 1 transports the withdrawal reject banknotes stored in the temporary holding unit 20 to the reject storage 28 and stores them.

[1-3. Composition of discrimination department]
As shown in FIG. 3, the discrimination unit 18 is composed of a substantially rectangular parallelepiped frame 40. The frame 40 is composed of a resin upper frame 40A and a lower frame 40B. Between the upper frame 40A and the lower frame 40B, a transport path 43 for traveling the bill BL in the front direction or the rear direction is provided. The upper frame 40A is configured to be rotatable around a rotation fulcrum (not shown) provided on the lower frame 40B so that the rear end moves upward. The upper frame 40A is rotated around a rotation fulcrum by a maintenance worker when maintenance work for removing banknotes stuck in the transport path 43 and cleaning work for the roller surface of the thickness reference roller 51 or the thickness detection roller 52 are performed. By being moved, the transport path 43 is opened to the outside, and it becomes easy for maintenance workers to access. Based on the control of the control unit 12, the banknote deposit / withdrawal machine 10 performs the banknote BL discrimination process while traveling the banknote BL from the front direction to the rear direction or from the rear direction to the front direction along the transport path 43. ..

The discrimination unit 18 includes an upper transport guide 41, a lower transport guide 42, drive rollers 33A, 33B and 33C, driven rollers 34A, 34B and 34C, a thickness information acquisition section 50, and optics around the transport path 43. It has an information acquisition unit 60 and a magnetic information acquisition unit 70.

The upper transport guide 41 is a part of the upper frame 40A, is formed in a plate shape by a resin material, is provided at the lower end of the upper frame 40A, and is a guide member extending in the front-rear direction to guide bills. The lower transport guide 42 is a part of the lower frame 40B, is formed in a plate shape by a resin material, is provided at the upper end of the lower frame 40B, extends in the front-rear direction, faces the upper transport guide 41, and guides banknotes. It is a guide member to be used.

The thickness information acquisition unit 50 acquires the thickness information of the bill BL. The optical information acquisition unit 60 acquires the image information of the bill BL. The magnetic information acquisition unit 70 acquires the magnetic information of the bill BL. Hereinafter, the transport direction, which is the direction in which the banknotes are transported, and the direction orthogonal to the transport direction and the thickness direction of the banknotes are also referred to as a transport width direction.

The drive rollers 33A, 33B and 33C and the driven rollers 34A, 34B and 34C are wider than the width along the transport width direction of the maximum width bill, which is the maximum width bill BL among the types of bill BL handled by the bill deposit / withdrawal machine 10. In a narrow range, a plurality (for example, four) are provided along the transport width direction.

Drive rollers 33A, 33B and 33C and a thickness reference roller 51 are rotatably attached to the lower transport guide 42 about the left-right direction (transport width direction). The drive rollers 33A, 33B and 33C and the thickness reference roller 51 project a part of the outer peripheral surface from the openings 42A shown in FIGS. 4 and 8 formed in the lower transport guide 42 into the transport path 43, respectively. The roller-to-roller guide portion 42B as a first guide portion that extends in the front-rear direction between the openings 42A adjacent to each other in the left-right direction and guides the bills so that the bills do not enter between the adjacent thickness reference rollers 51. Is formed.

The driven rollers 34A, 34B, and 34C are attached to the upper transport guide 41 so as to be rotatable and vertically movable about the left-right direction. The driven rollers 34A, 34B, and 34C each project a part of the outer peripheral surface into the transport path 43 from the opening 41A shown in FIG. 4 formed in the upper transport guide 41. A guide portion 41B between rollers as a second guide portion that extends in the front-rear direction between the openings 41A adjacent to each other in the left-right direction and guides the bills so that the bills do not enter between the adjacent thickness detection rollers 52. Is formed. The driven rollers 34A, 34B and 34C are pressed against the driving rollers 33A, 33B and 33C by an urging member which is a compression spring (not shown), respectively.

The roller portion 52A of the thickness detection roller 52 is attached to the thickness detection roller bracket 52D so as to be rotatable about the left-right direction at the rotation fulcrum portion 52B. The thickness detection roller bracket 52D is rotatably attached to the bracket rotation fulcrum portion 52C in the left-right direction. The plurality of thickness detection rollers 52 arranged in the left-right direction have a pressing force F'C1 and a pressing force F'C2 (not shown) shown in FIG. 9A due to the spring 55 which is a compression spring shown in FIG. It is pressed against the thickness reference roller 51. The roller portion 52A of the thickness detection roller 52 projects a part of the outer peripheral surface into the transport path 43 from the opening 41A (FIG. 4) formed in the upper transport guide 41.

[1-4. Configuration of thickness information acquisition unit]
As shown in FIGS. 4 to 8, the thickness information acquisition unit 50 is centered on a thickness reference roller 51 arranged on the lower side of the transport path 43 and a thickness detection roller 52 arranged on the upper side of the transport path 43. It is configured in.

As shown in FIG. 4, the thickness reference roller 51 is formed in a columnar shape long to the left and right as a whole, and is penetrated and fixed in the left and right direction to the elongated columnar shaft 51A. The left and right ends of the shaft 51A are inserted into bearings 40C (bearings 40CL and 40CR) such as metal ball bearings, and are rotatably supported by the bearings 40C. As a result, the thickness reference roller 51 rotates integrally with the shaft 51A with respect to the bearing 40C. The bearing 40C is supported by a reference roller pressing member 53 and a reference roller pressing reinforcing member 54 screwed to the lower frame 40B. Hereinafter, the bearings 40CL and 40CR are also collectively referred to as the bearing 40C.

As shown in FIG. 4, the thickness detection roller frame 52E has an H shape when viewed from the rear, and has a roller frame top plate 52ET extending in the left-right direction and a roller frame front side plate extending in the vertical direction at the front end of the roller frame top plate 52ET. 52EF (FIG. 7), roller frame left plate 52EL (FIG. 4) extending vertically at the left end of the roller frame top plate 52ET, and roller frame right plate 52ER extending vertically at the right end of the roller frame top plate 52ET (FIG. 4). It has FIG. 4) and. The roller frame front side plate 52EF (FIG. 7) has a holding portion extending rearward toward the bracket rotation fulcrum portion 52C. As shown in FIG. 4, the lower end surface of the roller frame left side plate 52EL is a contact portion 52EtL that abuts on the upper side of the bearing 40CL, and the lower end surface of the roller frame right side plate 52ER abuts on the upper side of the bearing 40CR. The contact portion is 52 EtR. Hereinafter, the contact portion 52EtL and 52EtR are also collectively referred to as the contact portion 52Et. The roller frame left side plate 52EL penetrates the upper frame hole 40AA drilled in the upper frame 40A and the lower frame hole 40BA drilled in the lower frame 40B, and the contact portion 52EtL is formed on the upper side of the bearing 40CL. In direct contact. The roller frame right side plate 52ER penetrates the upper frame hole 40AA drilled in the upper frame 40A and the lower frame hole 40BA drilled in the lower frame 40B, and the contact portion 52EtR is formed on the upper side of the bearing 40CR. In direct contact. The thickness detection roller frame 52E is fixed to the upper frame 40A while being penetrated by the rotation shaft 44B described later.

As shown in FIG. 5, the lower frame 40B is curved according to the outer shape of the bearing 40CL, and the portion in front of the lower frame hole 40BA is on the front upper side of the bearing 40CL and from the lower frame hole 40BA. The rear portion is in contact with the rear upper side of the bearing 40C, respectively. In FIG. 5, the upper transport guide 41 is not shown and is omitted.

The reference roller pressing member 53L is a thin plate-shaped leaf spring having a thin width in the left-right direction, extending in the front-rear direction, and thin in the up-down direction. In the reference roller pressing member 53L, the central portion in the front-rear direction abuts on the lower end portion of the bearing 40CL, and the lower front and rear portions of the bearing 40CL are screwed into the lower frame 40B with screws 86. , The bearing 40CL is urged upward and pressed against the lower frame 40B.

The reference roller pressing reinforcing member 54L as a reinforcing member is a plate-shaped member that is formed to have higher rigidity than the reference roller pressing member 53L, has a narrow width in the left-right direction, extends in the front-rear direction, and has a thin thickness in the vertical direction. In the reference roller pressing reinforcing member 54L, the central portion in the front-rear direction does not abut on the reference roller pressing member 53, and the front end portion and the rear end portion are screwed to the lower frame 40B via the reference roller pressing member 53 with screws 86. By being combined, the reference roller pressing member 53L is fixed to the lower frame 40B in a state of being overlapped with the lower frame 40B so as to sandwich the reference roller pressing member 53L. The reference roller pressing reinforcing member 54L prevents the lower frame 40B from being deformed downward by the force of the reference roller pressing member 53L pulling the lower frame 40B downward through the screw 86. Although the bearing 40CL, the reference roller pressing member 53L and the reference roller pressing reinforcing member 54L have been described above, the bearing 40CR, the reference roller pressing member 53R and the reference roller pressing reinforcing member 54R are similarly configured. Hereinafter, the reference roller pressing members 53L and 53R are collectively referred to as a reference roller pressing member 53, and the reference roller pressing reinforcing members 54L and 54R are collectively referred to as a reference roller pressing reinforcing member 54.

As shown in FIG. 7, the roller portion 52A of the thickness detection roller 52 is formed in a cylindrical shape, and is penetrated in the left-right direction by an elongated cylindrical rotary fulcrum portion 52B. The rotation fulcrum portion 52B is attached to the thickness detection roller bracket 52D.

The thickness detection roller bracket 52D is made of a thin metal material that is thin in the vertical direction and elongated in the front-rear direction, and as shown in FIG. 4, the left and right ends of the top plate are bent downward to form side plates. As shown in FIG. 7, shaft holes having a hole diameter corresponding to the bracket rotation fulcrum portion 52C are bored on the front side of the left and right side plates. Further, the thickness detection roller bracket 52D can rotate the roller portion 52A of the thickness detection roller 52 at a position substantially directly above the thickness reference roller 51 by inserting the bracket rotation fulcrum portion 52C into the shaft holes in the left and right side plates. Hold on. Further, the thickness detection roller bracket 52D has a rotation hole formed behind the shaft hole in the left and right side plates, and rotates with respect to the thickness detection roller frame 52E via a small columnar bracket rotation fulcrum portion 52C. It is installed freely. Therefore, the thickness detection roller bracket 52D can displace the thickness detection roller 52 up and down by rotating around the bracket rotation fulcrum portion 52C.

A spring 55, which is a compression coil spring, is attached between the top plate of the thickness detection roller bracket 52D and the roller frame top plate 52ET in a compressed state from the natural state. As shown in FIG. 9A, the spring 55 uses a plurality of thickness detecting rollers 52 arranged in the left-right direction toward the thickness reference roller 51 with a pressing force F'C1 and a pressing force F'C2 (not shown). I'm pushing. As a result, as shown in FIG. 9A, the roller frame top plate 52ET receives upward reaction forces FC1 and reaction forces FC2 ... From the spring 55, which separates the thickness detection roller frame 52E from the bearing 40C.

As shown in FIG. 6, the upper frame 40A and the lower frame 40B are locked so that the thickness detection roller frame 52E and the thickness reference roller 51 are pressed by the lock mechanisms 44 provided on the left and right outer sides of the side surface. The lock mechanism 44 includes an arm 44A provided on the upper frame 40A having a rotating shaft 44B extending in the left-right direction and a spring 44D, and a lower frame 40B screwed to the lower frame 40B on the left and right outer sides of the lower frame 40B. The side frame is composed of a pin 44C protruding from the side plate 44E to the left and right outside. The arm 44A is configured to be rotatable around a rotation shaft 44B, is urged counterclockwise in FIG. 6 by a spring 44D which is a tension spring, and is brought into contact with the rear lower side of the pin 44C. The pin 44C is urged forward and upward. As a result, the lock mechanism 44 urges the reference roller pressing member 53 upward via the pin 44C, the lower frame side plate 44E, and the lower frame 40B, and urges the rotating shaft 44B downward. The thickness detection roller frame 52E is locked so as to be pressed against the bearing 40C.

As shown in FIG. 9, the lock mechanism 44 on the left side pulls the pin 44C on the left side and the lower frame side plate 44E on the left side upward by a tensile force F'L1. The lock mechanism 44 on the right side pulls the pin 44C on the right side and the lower frame side plate 44E on the right side upward by a tensile force F'L2 (not shown). As a result, the lock mechanism 44 locks the roller frame left side plate 52EL downward with the locking force FL1 and locks the roller frame right side plate 52ER downward with the locking force FL2.

Further, a thickness detection sensor 56 shown in FIG. 7 is provided above the thickness detection roller bracket 52D with respect to the thickness detection roller 52. The thickness detection sensor 56 detects the relative displacement amount of the thickness detection roller bracket 52D on the top plate with reference to the position when the roller portion 52A of the thickness detection roller 52 abuts on the thickness reference roller 51.

With this configuration, when the bill is transported to the transport path 43, the thickness information acquisition unit 50 sandwiches the bill between the thickness detection roller 52 and the thickness reference roller 51 by the action of the spring 55, so that the thickness of the bill The thickness detection roller bracket 52D and the thickness detection roller 52 are displaced upward accordingly. At this time, the thickness detection sensor 56 detects the amount of displacement in the upward direction and sends the detection result to the control unit 12.

[1-5. Relationship of power]
By the way, when the upper frame 40A and the lower frame 40B are locked, the bearing 40C, the thickness detection roller frame 52E, the bearing 40C and the lower frame 40B are in close contact with each other as shown in FIG. 9A, and the thickness information The acquisition unit 50 can accurately install the thickness reference roller 51 and the thickness detection roller 52.

Here, the thickness information acquisition unit 50 sets the combined force of the locking force FL1 and the locking force FL2 to be larger than the combined force of all the reaction forces FC1 and the reaction forces FC2. As a result, the thickness information acquisition unit 50 presses the thickness detection roller frame 52E against the bearing 40C so as not to separate it from the bearing 40C. Further, in order to prevent the thickness reference roller 51 from separating from the thickness detection roller frame 52E, the thickness information acquisition unit 50 attaches the thickness reference roller 51 to the contact portion 52Et of the thickness detection roller frame 52E so that the thickness detection roller 52 faces downward. It is necessary to press with a load greater than the pressing force.

As shown in FIG. 9A, the roller frame left plate 52EL applies a pressing force FR1 that pushes downward against the bearing 40CL. Further, the reference roller pressing member 53L applies a pressing force PR1 that pushes upward against the bearing 40CL. Since the pressing force PR1 is set to be larger than the pressing force FR1, the bearing 40C is pressed against the lower frame 40B so as not to be separated from the lower frame 40B. Therefore, an upward force PF1 (= pressing force PR1-pressing force FR1), which is a combination of the pressing force FR1 and the pressing force PR1 facing the pressing force FR1, acts as a load on the lower frame 40B. Specifically, when the pressing force PR1 of the reference roller pressing member 53L is 1.5 times the locking force FL1, the force of the force PF1 = 0.5 × the locking force FL1 becomes the load applied to the lower frame 40B.

At this time, as shown in FIG. 9C, a downward force that becomes a reaction force of the pressing force PR1 with a magnitude of 1/2 × pressing force PR1 on the front side and the rear side of the bearing 40C in the lower frame 40B, respectively. Occurs. Therefore, as shown in FIG. 9B, if the reference roller pressing reinforcing member 54 is not provided, it is made of a resin that is easily deformed if such a load is continuously applied to the lower frame 40B supporting the bearing 40C for a long time. The lower frame 40B may be deformed by creep so as to be pulled downward away from the thickness detection roller frame 52E. On the other hand, in the present embodiment, the thickness information acquisition unit 50 is provided with a reference roller pressing reinforcing member 54 having high rigidity in addition to the reference roller pressing member 53 on the lower side of the lower frame 40B, whereby FIG. 9C is shown. As shown in the above, deformation of the lower frame 40B can be prevented.

Although the periphery of the portion where the roller frame left side plate 52EL and the bearing 40CL are in close contact with each other has been mainly described above, the periphery of the portion where the roller frame right side plate 52ER and the bearing 40CR are in close contact with each other is also configured in the same manner.

[1-6. Effect, etc.]
In the above configuration, the thickness information acquisition unit 50 abuts the thickness detection roller frame 52E provided with the thickness detection roller 52 and the thickness detection sensor 56 against the bearing 40C coaxial with the thickness reference roller 51. As a result, the thickness information acquisition unit 50 can accurately determine the mounting position of the thickness detection roller 52 and the thickness reference roller 51, and the thickness detection roller in a state where the thickness reference roller 51 and the thickness detection roller 52 do not hold a bill. The gap between the 52 and the thickness detection sensor 56 can be arranged with high accuracy, and the thickness detection accuracy of the thickness information acquisition unit 50 can be improved.

Further, in the bill identification device in Patent Document 1, since the thickness reference roller and the thickness detection roller are fixed to an integrated sensor frame, when a bill jam occurs in the thickness detection device, a maintenance worker picks up the bill. It was difficult to remove from the transport path and the jam removal property was poor.

Further, in the banknote acceptor according to Patent Document 1, since the thickness reference roller and the thickness detection roller are fixed to the integrated sensor frame, when the surface of the thickness reference roller or the thickness detection roller is soiled and the thickness detection performance is deteriorated. In addition, it was difficult for the maintenance worker to clean the surface of the thickness reference roller or the thickness detection roller.

On the other hand, the thickness information acquisition unit 50 fixes the bearing 40C coaxial with the thickness reference roller 51 to the lower frame 40B, and the thickness detection roller frame 52E holding the thickness detection roller 52 to the upper frame 40A, and also fixes the upper frame. The 40A is configured to be rotatable with respect to the lower frame 40B. As a result, the thickness information acquisition unit 50 can easily remove the banknotes from the transport path 43 when a banknote jam occurs in the discrimination unit 18, and can maintain the jam removal performance. Further, the thickness information acquisition unit 50 can easily clean the roller surface of the thickness reference roller 51 or the thickness detection roller 52 when the roller surface of the thickness reference roller 51 or the thickness detection roller 52 is soiled and the thickness detection performance is deteriorated. Can be done.

Here, regarding the detection of the thickness of the banknote by the conventional thickness information acquisition unit 150, the members corresponding to those in FIG. 4 have the same reference numerals, and the members corresponding to FIGS. 4 and 11, 11 and 12, and 8 have the same reference numerals. 13 and FIG. 14 having the same reference numerals to the members corresponding to FIG. 9A will be described. In FIG. 10, the thickness reference roller 51, the shaft 51A, the bearing 40C (bearing 40CL and 40CR), the bearing holding member 82 and the lower frame 140B are mainly shown, and the others are not shown and omitted. As shown in FIG. 11, the thickness information acquisition unit 150 inserts the bearing 40CL into the bearing support portion 80 curved so as to be separated downward from the guide surface of the lower transport guide 42 in the lower frame 140B, and forms a thin plate bearing. By pressing from above with the pressing member 82, the thickness reference roller 51 is fixed to the lower frame 140B. Although the periphery of the bearing 40CL has been described above, the periphery of the bearing 40CR is similarly configured.

Here, in the thickness information acquisition unit 150, it is necessary to press the thickness detection roller frame 52E against the bearing 40C so that the thickness reference roller 51 does not separate from the thickness detection roller frame 52E.

Therefore, in the conventional thickness information acquisition unit 150, as shown in FIGS. 11 and 14, the roller frame left plate 52EL applies a pressing force FR1 that pushes downward against the bearing 40CL, and the bearing holding member 82 is applied to the bearing 40CL. On the other hand, a pressing force F1 that pushes downward is applied. Therefore, the downward force PF1 (= pressing force FP1 + 2 × pressing force F1), which is a combination of the pressing force FR1 and the pressing force F1, acts as a load on the bearing support portion 80 of the lower frame 140B, so that the thickness information acquisition unit 50 The load applied to the lower frame 140B made of resin is larger than that of the lower frame 140B.

Therefore, in the conventional thickness information acquisition unit 150, the lower frame 140B continues to receive a strong load, the lower frame 140B is deformed by creep, and the thickness detection roller 52 and the thickness reference roller 51 are combined. There was a possibility that the position accuracy would decrease.

On the other hand, in the thickness information acquisition unit 50, from the side opposite to the abutting surface of the thickness detection roller 52 with respect to the thickness reference roller 51, that is, from the lower side opposite to the direction in which the thickness detection roller frame 52E urges the bearing 40C. , The bearing 40C is abutted against the lower frame 40B upward by the reference roller pressing member 53. As a result, the thickness information acquisition unit 50 can exert a force PF1 that is a combination of the pressing force FR1 and the pressing force PR1 facing the pressing force FR1 on the lower frame 40B as a load.

As a result, the thickness information acquisition unit 50 can reduce the load applied to the lower frame 40B to be smaller than that of the lower frame 140B, prevent the lower frame 40B from being deformed, and can prevent the lower frame 40B from being deformed, and the upper surface of the lower transport guide 42 and the thickness reference roller. The mounting accuracy with the 51 can be improved, the accuracy of the gap in the transport path 43 can be improved, and the transport performance can be improved.

Further, the thickness information acquisition unit 50 fixes the reference roller pressing reinforcing member 54 having high rigidity to the lower frame 40B with the reference roller pressing member 53 interposed therebetween. As a result, the thickness information acquisition unit 50 is attached to the reference roller pressing member 53 in the lower frame 40B even when a force is applied for a long time so that the reference roller pressing member 53 pulls the lower frame 40B downward for a long time. It is possible to reduce the load applied to the mounting portion and prevent the lower frame 40B from being deformed by creep.

Further, in a structure such as the thickness information acquisition unit 150, as shown in FIG. 13, the lower transfer guide 42 includes the thickness reference roller 51 at the right end to the thickness reference roller 51 at the left end, and the upper side of the bearing support portion 80. From above the large opening 42C bored as described above, the lower roller unit 88 in which the thickness reference roller 51, the shaft 51A and the bearing 40C are integrated is lowered so that the bearing 40C enters the bearing support portion 80. Subsequently, as shown in FIGS. 12 and 13 and FIG. 5 in Patent Document 1, there is a gap between the thickness reference rollers 51 adjacent to each other in the transport width direction and a gap between the thickness detection rollers 52 adjacent to each other in the transport width direction. In each case, the inter-roller guide member 84 having a narrow width in the transport width direction is inserted into the holes provided in the front and rear of the inter-roller guide member 84 in the lower transport guide 42, so that bill jam occurs. Is being prevented. In such a case, since the lower transport guide 42 and the inter-roller guide member 84 are separate bodies, a joint is formed between the lower transport guide 42 and the inter-roller guide member 84, and bills are easily caught.

On the other hand, in the thickness information acquisition unit 50, since the lower roller unit 88 is attached to the lower frame 40B from below the lower transport guide 42, the lower transport guide 42 has a large opening 42C as shown in FIG. No need to form. Therefore, since the thickness information acquisition unit 50 can form the inter-roller guide portion 42B integrally with the lower transfer guide 42, it is possible to eliminate the joint between the lower transfer guide 42 and the inter-roller guide portion 42B, and the bills are caught. Can be reduced and the transport performance can be improved. Further, since the thickness information acquisition unit 50 can form the inter-roller guide portion 41B integrally with the upper transfer guide 41, it is possible to eliminate the joint between the upper transfer guide 41 and the inter-roller guide portion 41B, and reduce the catching of banknotes. , The transport performance can be improved.

According to the above configuration, the discrimination unit 18 is arranged so as to face the lower frame 40B including the lower transport guide 42 as the first transport guide and the lower transport guide 42, and the lower transport guide 42. The thickness of the bills provided on the upper frame 40A and the upper frame 40A including the upper transport guide 41 as the second transport guide forming the transport path 43 for the bills as a medium is detected. A thickness detection roller 52, a thickness reference roller 51 provided on the lower frame 40B and arranged to face the thickness detection roller 52, and a thickness reference roller 51 for transporting bills between the thickness detection roller 52 and the thickness reference roller 52. A bearing 40C provided coaxially with the 51 is provided, the upper frame 40A has a contact portion 52Et that abuts on the bearing 40C, and the lower frame 40B is on the opposite side of the position where the contact portion 52Et abuts on the bearing 40C. In the above, the bearing 40C is provided with a reference roller pressing member 53 which is an elastic member for urging the contact portion 52Et.

As a result, the discrimination unit 18 can open the transport path 43 to the outside by providing the lower transport guide 42 on the lower frame 40B and the upper transport guide 41 on the upper frame 40A separate from the lower frame 40B. While maintaining the jam bill removal performance, the load applied to the lower frame 40B is reduced to prevent deformation of the lower frame 40B, and the positional accuracy between the thickness detection roller 52 and the thickness reference roller 51 is improved to improve the thickness of the bill. The detection accuracy can be improved.

[2. Other embodiments]
In the above-described embodiment, the case where the bearing 40C is urged upward by the reference roller pressing member 53 and the reference roller pressing reinforcing member 54 and the deformation of the lower frame 40B is prevented is described. The present invention is not limited to this, and when the load applied to the lower frame 40B is weak, such as when the number of thickness detecting rollers 52 along the transport width direction is small, the reference roller pressing reinforcing member 54 is omitted and the reference roller pressing member is omitted. It is not necessary to provide only 53 and not to reinforce with the reference roller pressing reinforcing member 54. In short, it suffices if the bearing 40C can be urged so as not to separate from the lower frame 40B.

Further, in the above-described embodiment, the case where the reference roller pressing member 53 is composed of a leaf spring has been described. The present invention is not limited to this, and if the reference roller pressing reinforcing member 54 has sufficient rigidity, the reference roller pressing member 53 may be composed of various elastic members such as a coil spring.

Further, in the above-described embodiment, the case where the reference roller pressing reinforcing member 54 and the lower frame side plate 44E are separately configured has been described. The present invention is not limited to this, and the reference roller pressing reinforcing member 54 and the lower frame side plate 44E may be integrated. Further, the lower frame side plate 44E and the pin 44C may be integrated.

Further, in the above-described embodiment, the case where the thickness detection roller frame 52E is pressed against the bearing 40C by urging the pin 44C from the lower side to the upper side by the arm 44A in the lock mechanism 44 has been described. The present invention is not limited to this, and if the thickness detection roller frame 52E and the bearing 40C are urged in a direction in which they approach each other, various parts such as the lower frame side plate 44E and the lower frame 40B may be urged.

Further, in the above-described embodiment, the roller frame left side plate 52EL describes the case where the contact portion 52EtL directly contacts the bearing 40CL, and the roller frame right side plate 52ER describes the case where the contact portion 52EtR directly contacts the bearing 40CR. .. The present invention is not limited to this, and something may be sandwiched between the contact portion 52EtL and the bearing 40CL and between the contact portion 52EtR and the bearing 40CR.

Further, in the above-described embodiment, the case where the present invention is applied to the discrimination unit 18 that discriminates banknotes as a medium in the cash automatic teller machine 1 that trades cash has been described. The present invention is not limited to this, and may be applied to various devices for discriminating thin paper-like media such as bonds, certificates, gift certificates, cash vouchers, admission tickets, and the like. Further, it is composed of a combination of a plurality of types of devices that perform various processes related to the transaction of banknotes and coins, such as a banknote deposit / withdrawal machine for inserting / removing banknotes and a sealing small bundle payment machine for sealing banknotes in predetermined numbers. The present invention may be applied to a cash processing device.

Further, in the above-described embodiment, the case where the present invention is applied to an automated teller machine that performs deposit transactions and withdrawal transactions has been described, but the present invention is applied to an device that performs only one of deposit transactions and withdrawal transactions. May be applied.

Further, in the above-described embodiment, the lower frame 40B as the first frame, the upper frame 40A as the second frame, the thickness detection roller 52 as the thickness detection roller, and the thickness reference roller 51 as the thickness reference roller The case where the discrimination unit 18 as the medium processing device is configured by the bearing 40C as the bearing is described. The present invention is not limited to this, and the medium processing apparatus may be configured by a first frame having various other configurations, a second frame, a thickness detection roller, a thickness reference roller, and a bearing.

The present invention can also be used in various devices for discriminating paper-like media such as banknotes.

1 …… Automatic cash transaction device, 2 …… Housing, 3 …… Customer service unit, 4 …… Card entrance / exit, 5 …… Deposit / withdrawal port, 6 …… Operation display unit, 7 …… Tenkey, 8 …… Receipt issuing port, 9 ... Main control unit, 10 ... Bill deposit / withdrawal machine, 11 ... Deposit / withdrawal machine housing, 12 ... Control unit, 14 ... Storage unit, 16 ... Deposit / withdrawal unit, 18 ... Discrimination section, 20 ... Temporary hold section, 22 ... Forgotten collection box, 24 ... Transport section, 26 ... Bill storage, 28 ... Reject box, 33A, 33B, 33C ... Drive roller, 34A, 34B , 34C ... driven roller, 40 ... frame, 40A ... upper frame, 40AA ... upper frame hole, 40B, 140B ... lower frame, 40BA ... lower frame hole, 40C, 40CL, 40CR ... ... Bearing, 41 ... Upper transport guide, 41A ... Opening, 41B ... Roller guide, 42 ... Lower transport guide, 42A ... Opening, 42B ... Roller guide, 42C ... Large Opening, 43 ... Transport path, 44 ... Lock mechanism, 44B ... Rotating shaft, 44A ... Arm, 44C ... Pin, 44D ... Spring, 44E ... Lower frame side plate, 50, 150 ... Thickness information acquisition unit, 51 ... Thickness reference roller, 51A ... Shaft, 52 ... Thickness detection roller, 52A ... Roller part, 52B ... Rotation fulcrum part, 52C ... Bracket rotation fulcrum part, 52D ... Thickness Detection roller bracket, 52E ... Thickness detection roller frame, 52EL ... Roller frame left side plate, 52ER ... Roller frame right side plate, 52ET ... Roller frame top plate, 52EF ... Roller frame front side plate, 52EtL ... Contact part , 52EtR ... Contact part, 52Et ... Contact part, 53L, 53R, 53 ... Reference roller pressing member, 54L, 54R, 54 ... Reference roller pressing reinforcing member, 55 ... Spring, 56 ... Thickness detection Sensor, 60 ... Optical information acquisition unit, 70 ... Magnetic information acquisition unit, 80 ... Bearing support, 82 ... Bearing holding member, 84 ... Roller guide member, 86 ... Screw, 88 ... Lower side Roller unit, FL1 ... Locking force, FL2 ... Locking force, F'L1 ... Tensile force, FR1 ... Pushing force, PR1 ... Pushing force, PF1 ... Force, F'C1 ... Pushing force, FC1 ... … Reaction force, BL …… Bill.

Claims (7)

The first frame including the first transport guide and
A second frame including a second transport guide arranged to face the upper side of the first frame and forming a transport path for the medium with the first transport guide.
A thickness detection roller provided on the second frame for detecting the thickness of the medium passing through the transport path, and
A thickness reference roller provided on the first frame, arranged so as to face the thickness detection roller, and transporting a medium between the thickness detection roller and the thickness reference roller.
It is equipped with a bearing provided coaxially with the thickness reference roller.
The second frame has a contact portion that comes into contact with the bearing.
The first frame is on the side opposite to the position where the contact portion of the bearing abuts, on the elastic member that urges the bearing toward the contact portion side , and on the opposite side of the elastic member with respect to the bearing. , A medium processing apparatus having a bearing support portion that comes into contact with the bearing urged by the elastic member . The medium processing apparatus according to claim 1, wherein the second frame is configured to be movable with respect to the first frame so as to open the transport path. The medium processing apparatus according to claim 1, wherein the elastic member is a leaf spring in which both ends in a direction along the conveying direction of the medium are fixed to the first frame. The first aspect of the present invention is characterized in that the reinforcing member is formed to have higher rigidity than the elastic member, is arranged so as to be overlapped with the elastic member, and is fixed to the first frame at the same place as the fixing place of the elastic member. The medium processing apparatus described. The medium processing apparatus according to claim 1, wherein the first transfer guide and the second transfer guide are formed of a resin material. A first guide portion formed integrally with the first transport guide, provided in a gap between the thickness reference rollers, and guides the medium so that the medium does not enter between adjacent thickness reference rollers. The medium processing apparatus according to claim 1, further comprising. A second guide portion formed integrally with the second transport guide, provided in a gap between the thickness detection rollers, and guides the medium so that the medium does not enter between adjacent thickness detection rollers. The medium processing apparatus according to claim 1, further comprising.

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