CN116704663A

CN116704663A - Sheet thickness detection device, sheet identification device, and sheet processing device

Info

Publication number: CN116704663A
Application number: CN202310154740.XA
Authority: CN
Inventors: V•阮; 三浦洋辅
Original assignee: Hitachi Financial Systems Co ltd
Current assignee: Hitachi Financial Systems Co ltd
Priority date: 2022-03-02
Filing date: 2023-02-23
Publication date: 2023-09-05
Also published as: EP4239604A1; JP2023128095A

Abstract

The invention provides a sheet thickness detection device, a sheet identification device, and a sheet processing device. In a sheet thickness detecting device, the accuracy of sheet thickness detection is improved by suppressing vibration generated by impact when a sheet is projected between a reference roller and a detecting roller while maintaining maintainability. The sheet thickness detection device detects the thickness of a sheet, and includes: 1 st unit, possess the reference roller; and a 2 nd unit including a detection roller that conveys the sheet with the reference roller therebetween, and that is displaced relative to the reference roller in accordance with the thickness of the sheet, and a thickness sensor that detects the thickness of the sheet based on the displacement amount of the detection roller. The 1 st and 2 nd units are assembled so as to be openable and closable about a rotation shaft provided at one end side of the conveyance path, while forming the conveyance path of the sheet by overlapping the reference roller and the detection roller with the sheet interposed therebetween. The 2 nd unit has a vibration damping member at the thickness sensor.

Description

Sheet thickness detection device, sheet identification device, and sheet processing device

Technical Field

The present invention relates to a sheet thickness detection device, a sheet identification device, and a sheet processing device.

Background

Conventionally, in an automatic Cash transaction apparatus such as an automatic Cash deposit and withdrawal machine (ATM: automatic Teller Machine) or an automatic Cash payment machine (CD: cash Dispenser), there is a bill discriminating apparatus for discriminating the type and authenticity of bills as paper sheets. The bill discriminating device includes a bill thickness detecting device for determining denomination, authenticity, and detecting a bill attached to a foreign matter based on the thickness of the bill detected by the bill thickness detecting device. The banknote thickness detecting device includes a plurality of reference rollers, a plurality of detecting rollers, and a plurality of displacement sensors that detect the displacement amount by which the detecting rollers are displaced according to the thickness of the banknote with reference to the reference rollers when the conveyed banknote is sandwiched between the reference rollers and the detecting rollers.

Patent document 1: japanese patent laid-open No. 2014-102719

In recent years, banknote discriminating devices have been configured to be divided into upper and lower units through a banknote transport path, and to be capable of being opened and closed by a rotary shaft hinged to one end side in the banknote transport direction. The banknote thickness detecting device incorporated in the banknote discriminating device of this configuration is also configured to be unitized by using a plurality of reference rollers as a lower unit and a plurality of detecting rollers as an upper unit, and to be assembled so as to be openable and closable with one end side in the banknote conveying direction as a rotation axis. Such an openable and closable structure has an advantage of high maintainability when the bill is jammed between the reference roller and the detection roller.

However, in such an openable/closable structure, since the upper unit is openable/closable with less restriction, suppression of vibration of the detection roller due to impact when the bill is projected between the reference roller and the detection roller is insufficient. If the interval between the upper and lower rollers varies due to the vibration, the banknote thickness detection device cannot accurately detect the thickness of the banknote.

Disclosure of Invention

The present invention has been made in view of the above-described problems, and an object of the present invention is to improve accuracy of thickness detection of a sheet by suppressing vibration generated by an impact when the sheet is projected between a reference roller and a detection roller while ensuring maintainability in the sheet thickness detection device.

In order to solve the above problem, according to one aspect of the present invention, there is provided a sheet thickness detection device for detecting a thickness of a sheet, comprising: 1 st unit, possess the reference roller; and a 2 nd unit including a detection roller that is conveyed with the reference roller with the sheet therebetween, the detection roller being displaced relative to the reference roller in accordance with a thickness of the sheet, and a thickness sensor that detects the thickness of the sheet based on an amount of displacement of the detection roller; the 1 st unit and the 2 nd unit are assembled so as to be openable and closable about a rotation shaft provided on one end side of the conveyance path, and form the conveyance path of the sheet by overlapping the reference roller and the detection roller with the sheet interposed therebetween; the 2 nd unit includes a vibration damping member in the thickness sensor.

Effects of the invention

According to the present invention, for example, in the sheet thickness detecting device, it is possible to improve the accuracy of sheet thickness detection by suppressing vibration generated by an impact when a sheet is projected between the reference roller and the detecting roller while ensuring maintainability.

Drawings

Fig. 1 is an external perspective view of a cash automatic transaction apparatus according to the embodiment.

Fig. 2 is a schematic diagram showing an internal configuration of the automatic cash transaction apparatus according to the embodiment.

Fig. 3 is a side view of the banknote recognition apparatus according to the embodiment.

Fig. 4 is a plan view of a banknote recognition apparatus according to the embodiment.

Fig. 5 is a front view of the banknote recognition apparatus according to the embodiment.

Fig. 6 is a plan view of the thickness detection device according to the embodiment (with the upper and lower units closed).

Fig. 7 is a perspective view of the thickness detection device according to the embodiment (with the upper and lower units closed).

Fig. 8 is a front view of the thickness detection device according to the embodiment (a state in which the upper and lower units are closed).

Fig. 9 is a side sectional view of the thickness detection device according to the embodiment (a state in which the upper and lower units are closed).

Fig. 10 is a side sectional view of the thickness detection device according to the embodiment (a state in which the upper and lower units are opened).

Fig. 11 is a front view of the thickness detection device according to the embodiment (a state in which the upper and lower units are opened).

Fig. 12 is a graph showing a change in the thickness detection value caused by vibration of the detection roller in the thickness detection device of the comparative example in which the vibration damping member is not provided.

Fig. 13 is a graph showing a change in thickness detection value caused by vibration of the detection roller in the thickness detection device of example 1 in which the vibration damping member having a beam pressing viscosity coefficient smaller than a predetermined value is pressed.

Fig. 14 is a graph showing a change in thickness detection value due to vibration of the detection roller in the thickness detection device of example 2 in which the vibration damping member having a viscosity coefficient equal to or higher than a predetermined value is provided.

Fig. 15 is a graph showing a change in thickness detection value due to vibration of the detection roller in the thickness detection device of example 3 in which the vibration damping member having a beam pressing viscosity coefficient equal to or higher than a predetermined value.

Description of the reference numerals

1: automatic cash transaction device; 10: a banknote handling device; 30: a banknote recognition device; 30T: a thickness detection device; 30L: a lower unit; 30U: an upper unit; 30TL: a lower unit (1 st unit); 30TU: an upper unit (unit 2); 30a: a conveying path; 31: a bracket; 32: a sensor substrate; 33: a vibration damping member; 34: a beam; 35: a reference roller; 36: a detection roller; 37. 37LR, 37LL, 37UR, 37UL: a housing.

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following embodiments, including the figures, are merely illustrative, not limiting of the invention. In the drawings for describing the embodiments below, the same reference numerals denote components and processes having the same or similar functions, and a description thereof will be omitted. The embodiments, examples, and modifications may be partially or entirely combined as appropriate within the scope of the technical idea of the present invention and within the scope of matching.

In the following embodiments, the vertical direction (upper direction ) of the device case of the automatic cash transaction device is defined as the positive direction of the Z axis, and the direction from the user side (front side, front) of the device case toward the opposite side (back side, rear) is defined as the positive direction of the Y axis. The direction from the left side to the right side is set to be the positive direction of the X axis toward the user side of the device case. In the following description of the embodiment, an XYZ coordinate system of an orthogonal system in which the X axis, the Y axis, and the Z axis are orthogonal to each other is used.

In the following embodiments, directions and positions indicated by "up", "down", "left", "right", "front", "rear", "back", and the like are merely relative, and the directions, shapes, and sizes of the automatic cash transaction device and its constituent elements are not limited by the XYZ coordinate system. The number of constituent elements in the description and the drawings of the embodiment is merely an example.

In the following embodiments, a banknote thickness detection device, a banknote recognition device, a banknote handling device, and an automatic cash handling device, which handle banknotes as sheets, will be described as examples of the sheet thickness detection device, the sheet recognition device, the sheet handling device, and the automatic paper handling device. However, the present invention is not limited thereto, and other various types of paper such as checks and coupons can be similarly processed.

(integral Structure of automatic Cash transaction device 1)

Fig. 1 is an external perspective view of a cash automatic transaction apparatus 1 according to the embodiment. The automatic cash transaction apparatus 1 uses cash cards, banknotes, bills and the like as transaction media, and performs processing such as cash deposit, payment, and transfer by user operations. The automatic cash transaction apparatus 1 includes a passbook processing mechanism (not shown) for processing a passbook of a user and printing and discharging a transaction statement, and a card and statement processing mechanism (not shown) for processing a card of the user and printing and discharging a transaction statement at an upper portion in an apparatus case.

The passbook processing means processes a passbook of a user inserted from the slot 2 on the front side of the automatic cash transaction apparatus 1, and prints and discharges a transaction detail. The card and statement processor processes the card of the user inserted from the slot 3 on the front side of the automatic cash transaction device, prints the transaction statement, and discharges the transaction statement together with the card. The automatic cash transaction apparatus 1 includes a screen operation unit 4 for displaying contents of a transaction by a user and inputting various information and items for the transaction in front of the front side.

The automatic cash transaction apparatus 1 includes a banknote handling device 10 for handling banknotes at a lower portion in a device case. The banknote deposit and withdrawal transaction is performed in response to opening and closing of a shutter 5a provided in the deposit and withdrawal section 5 of the banknote handling apparatus 10.

Further, a coin processing device (not shown) for processing coins may be provided in the device case of the automatic cash transaction device 1. The deposit and withdrawal transaction of coins is performed in response to opening and closing of a shutter (not shown) provided in a deposit and withdrawal section of the coin handling apparatus.

(internal Structure of automatic Cash transaction device 1)

Fig. 2 is a schematic diagram showing an internal configuration of the automatic teller machine 1 according to the embodiment. The automatic cash transaction apparatus 1 has a processing mechanism for the paper money to be transacted disposed above the lower part of the housing, and a storage mechanism for the paper money disposed below the processing mechanism. Above the lower part of the housing of the banknote handling apparatus 10, a deposit and withdrawal section 5 is disposed on the front side (the side facing the user: the upper right side in fig. 2), and the deposit and withdrawal section 5 receives deposit of banknotes placed substantially upright by the user, and discharges the banknotes substantially upright for the user to take out. The deposit and withdrawal section 5 is provided with a bill feeding section 5b for feeding bills fed from above to below and a bill stacking section 5c for stacking bills for deposit or return fed from below, in front of and behind.

Further, a banknote discriminating device 30 for discriminating banknotes is disposed in the central portion, and a temporary holding section 40 for temporarily holding banknotes inserted by a user until a transaction is established is disposed on the rear side (upper left side in fig. 2). These mechanism parts are connected by a bidirectional conveying path.

The banknote discriminating device 30 can discriminate the denomination and the authenticity of the banknote transported through the transport path 30a from both the front and the rear, regardless of the direction. The banknote discriminating device 30 can discriminate denomination and authenticity of a banknote transported in both directions of deposit and withdrawal, and can discriminate whether or not the banknote can be accepted and whether or not the banknote can be paid out.

A plurality of storage units 70 for storing banknotes by denomination are arranged below the banknote handling apparatus 10. The storage unit 70 includes a storage unit for storing banknotes, which are discriminated as acceptable by the banknote discriminating device 30, for each denomination. In addition, the storage unit 70 includes a storage unit that temporarily stores banknotes that are determined to be not acceptable by the banknote recognition device 30, a storage unit that is used when banknotes are replenished from the outside for dispensing, and the like.

(appearance structure of banknote discriminating device 30)

The external configuration of the banknote recognition apparatus 30 according to the embodiment will be described with reference to fig. 3 to 5. Fig. 3 is a side view of the banknote recognition apparatus 30 according to the embodiment, as viewed from the X-axis negative direction side, fig. 4 is a plan view of the banknote recognition apparatus 30 according to the embodiment, as viewed from the Z-axis positive direction side, and fig. 5 is a front view of the banknote recognition apparatus 30 according to the embodiment, as viewed from the Y-axis negative direction side.

The bill discriminating device 30 includes an upper unit 30U formed by unitizing the components located above the conveyance path 30a and a lower unit 30L formed by unitizing the components located below the conveyance path 30a, sandwiching the conveyance path 30a of the bill. The banknote discriminating device 30 is configured such that the upper unit 30U is attached to the lower unit 30L so as to be openable and closable on one end side (Y-axis positive direction side) in the transport direction of the banknote with respect to the rotation axis 30X parallel to the X-axis as a rotation center. The upper unit 30U is openable in the direction of arrow a (fig. 3) around the rotation shaft 30X.

Note that the banknote discriminating device 30 includes a thickness detecting device 30T (fig. 6 to 11) for detecting the thickness of the banknote transported through the transport path 30a, in the vicinity of the rotation shaft 30X (in the vicinity of the region 30Z1 in fig. 3 and the region 30Z2 in fig. 4).

(Structure of thickness detection device 30T)

The structure of the thickness detection device 30T according to the embodiment will be described with reference to fig. 6 to 11. Fig. 6 is a plan view of the thickness detection device 30T according to the embodiment, as viewed from the Z-axis positive direction side. Fig. 7 is a perspective view of the thickness detection device 30T according to the embodiment (with the upper and lower units closed). Fig. 8 is a front view (state in which the upper and lower units are closed) of the thickness detection device 30T according to the embodiment as viewed from the Y-axis forward direction side. Fig. 9 is a side cross-sectional view (state in which the upper and lower units are closed) of the thickness detection device 30T according to the embodiment as viewed from the X-axis negative direction side. Fig. 10 is a side cross-sectional view (state in which the upper and lower units are opened) of the thickness detection device 30T according to the embodiment as viewed from the X-axis negative direction side. Fig. 11 is a front view of the thickness detection device 30T according to the embodiment (a state in which the upper and lower units are opened) as viewed from the Y-axis forward direction side.

The plan view of the thickness detection device 30T in fig. 6 is a diagram in which elements other than the thickness detection device 30T are omitted from the plan view of the banknote recognition device 30 in fig. 4. The side cross-sectional view of the thickness detection device 30T in fig. 9 is a diagram in which elements other than the thickness detection device 30T are omitted from the side view of the banknote recognition device 30 in fig. 3.

As shown in fig. 6 to 7, the thickness detection device 30T includes a bracket 31, a sensor substrate 32, a damper member 33, a beam 34, a reference roller 35, a reference roller shaft 35X, a detection roller 36, a detection roller shaft 36X, and a housing 37.

The housing 37 includes housings 37UR, 37UL on the upper unit 30U side and housings 37LR, 37LL on the lower unit 30L side of the bill discriminating device 30. The housings 37UR, 37LR form end surfaces on the X-axis positive direction side of the thickness detection device 30T. The housings 37UL, 37LL form end surfaces on the X-axis negative direction side of the thickness detection device 30T.

The housings 37UR, 37UL are respectively mounted perpendicularly to the beam 34 from both ends of the beam 34 in the X-axis direction. The bracket 31 is mounted on the housings 37UR, 37UL, and supports a sensor substrate 32 on which a thickness sensor is arranged as described later so that the thickness sensor faces the detection roller 36. The bracket 31 is provided with a damper member 33 as will be described later. The bracket 31, the sensor substrate 32, the damper member 33, the beam 34, the detection roller 36, the detection roller shaft 36X, and the housings 37UR, 37UL constitute an upper unit 30TU (fig. 7) of the thickness detection device 30T. The reference roller 35 and the reference roller shaft 35X constitute a lower unit 30TL (fig. 7) of the thickness detection device 30T.

The reference roller shaft 35X is a rotation shaft for transmitting a rotational driving force from a transport drive system (not shown) of the banknote transport mechanism, and is provided to the housings 37LR and 37LL along the width direction (X-axis direction) of the transport path. The detection roller shaft 36X is disposed to face the upper side (Z-axis positive direction) of the reference roller shaft 35X and is supported by the housings 37LR and 37LL.

A plurality of reference rollers 35 are disposed on the lower reference roller shaft 35X. Further, on the upper detection roller shaft 36X, the same number of detection rollers 36 as the reference rollers 35 are arranged so as to face each reference roller 35.

The detection roller 36 is composed of an outer ring made of a cylindrical inelastic member such as metal whose outer peripheral surface is not displaced, and an elastic member such as a spring or rubber which can be elastically deformed in the direction of pressing against the reference roller 35.

The reference roller 35 is made of metal, and the outer peripheral surface is provided as a reference surface against which each detection roller 36 abuts. Each detection roller 36 is pressed by the corresponding reference roller 35 and is rotated. Further, if the banknote is sandwiched between the detection roller 36 and the reference roller 35, the outer wheel of the detection roller 36 facing the outer peripheral surface of the reference roller 35 as the reference surface is displaced upward (in the positive Z-axis direction from the reference roller shaft 35X toward the detection roller shaft 36X) in accordance with the thickness of the banknote.

A sensor substrate 32 is provided above the plurality of detection rollers 36 (in the positive Z-axis direction), and the sensor substrate 32 is provided with thickness sensors (not shown) disposed so as to face the detection rollers 36, and a sensor processing unit (not shown) for processing data obtained from the thickness sensors (not shown). The thickness sensor is, for example, an eddy current magnetic field type displacement sensor capable of detecting the displacement amount by which the opposing detection roller 36 is elastically displaced in the up-down direction (Z-axis direction) in accordance with the thickness of the banknote sandwiched between the reference roller 35. The sensor substrate 32 is supported by the carriage 31 so that the thickness sensor faces the detection roller 36. The thickness detection device 30T detects the thickness of the banknote based on the displacement amount of the detection roller 36 detected by the thickness sensor.

The vibration damping member 33 is a long member provided on the carriage 31 so as to extend in the width direction (X-axis direction) of the conveyance path 30a, but the shape is not limited to the long member. The vibration damping member 33 is preferably, but not limited to, a viscoelastic member. The vibration damping members 33 are stacked in plural in the Z-axis forward direction toward the beam 34 with respect to the bracket 31, but may be a single layer. The damper member 33 is a damper that suppresses vibration of the detection roller 36 that occurs due to an impact when a bill is inserted between the reference roller 35 and the detection roller 36.

If the damping members 33 are pressed by pressing members having higher rigidity than the damping members 33, the initial amplitude of the detection roller 36 is suppressed, and the damping time is shortened. When an existing member can be used as the pressing member, the vibration of the vibration damping member 33 is more effectively damped by filling the space between the placement surface of the vibration damping member 33 and the pressing member with the vibration damping member 33. In the present embodiment, as shown in fig. 7, the beam 34 is used as the pressing member, and the vibration damping member 33 is stacked on the bracket 31 in the Z-axis positive direction and filled up to the beam 34, thereby improving the vibration damping effect. The pressing member that presses the vibration damping member 33 may be newly provided, but by using an existing member such as the beam 34, the vibration damping effect of the vibration damping member 33 can be improved without increasing the number of components.

The vibration damping member 33 is not limited to the form shown in fig. 7 to 9, as long as it is a positional relationship of viscous deformation with respect to the vibration direction (or vibration damping direction) of the detection roller 36, and can be arranged on any of the upper units 30TU to obtain a vibration damping effect.

As shown in fig. 3, if the upper unit 30U of the bill discriminating device 30 is rotated in the arrow a direction with respect to the lower unit 30L about the rotation shaft 30X, the upper unit 30TU of the thickness detecting device 30T is rotated in the arrow a direction with respect to the lower unit 30TL (fig. 10). The upper unit 30TU includes housings 37UR, 37UL, a bracket 31, a sensor substrate 32, a vibration damping member 33, and a beam 34. The lower unit 30TL includes the housings 37LR, 37LL and the reference roller shaft 35X. Fig. 11 is a front view of the thickness detection device 30T shown in fig. 10 in a state in which the upper and lower units are opened, as viewed from the Y-axis forward direction.

(vibration damping Effect of detection roller 36 by vibration damping Member 33)

The vibration damping effect of the detection roller 36 by the vibration damping member 33 according to the embodiment will be described with reference to fig. 12 to 15. Fig. 10 to 15 show time variations of the thickness detection value due to vibration of the detection roller 36 when a bill of a predetermined thickness is conveyed, with the time on the horizontal axis and the thickness detection value of the detection roller 36 on the vertical axis.

First, as a comparative example, a temporal change in vibration of the detection roller 36 in the case where the vibration damping member 33 is not provided in the thickness detection device 30T will be described. Fig. 12 is a graph showing a change in the thickness detection value caused by vibration of the detection roller 36 in the thickness detection device 30T of the comparative example in which the vibration damping member 33 is not provided.

As shown in fig. 12, the detection value of the thickness sensor mounted on the sensor substrate 32 vibrates due to the vibration of the detection roller 36 occurring at time t=0, but as shown in a circular surrounding portion in fig. 12, a time until time t=t5 is required for the vibration to fall within a predetermined range.

Next, as example 1, a temporal change in vibration of the detection roller 36 in the case where the vibration damping member 33 having a viscosity coefficient smaller than a predetermined value is pressed against the thickness detection device 30T by the beam 34 will be described. Fig. 13 is a graph showing a change in the thickness detection value caused by vibration of the detection roller 36 in the thickness detection device 30T of example 1 in which the vibration damping member 33 having a viscosity coefficient smaller than a predetermined value is pressed by the beam 34.

As shown in fig. 13, the detection value of the thickness sensor mounted on the sensor substrate 32 vibrates due to the vibration of the detection roller 36 occurring at time t=0, but as shown in a circular surrounding portion in fig. 13, a time up to about time t=t2 is required for the vibration to fall within a predetermined range. In example 1, the amplitude of the initial vibration at time t=0 was suppressed, and the convergence time of the vibration was shortened, as compared with the comparative example. In embodiment 1, the vibration damping member 33 pressed by the beam 34 can be said to function as a reinforcing member for suppressing vibration.

Next, as example 2, a time change in vibration of the detection roller 36 in the case where the vibration damping member 33 having a viscosity coefficient equal to or higher than a predetermined value is provided in the thickness detection device 30T will be described. Fig. 14 is a graph showing a change in thickness detection value due to vibration of the detection roller 36 in the thickness detection device 30T of example 2 in which the vibration damping member 33 having a viscosity coefficient equal to or higher than a predetermined value is provided.

As shown in fig. 14, the detection value of the thickness sensor mounted on the sensor substrate 32 vibrates due to the vibration of the detection roller 36 occurring at time t=0, but as shown in a circular surrounding portion in fig. 14, a time up to about time t=t1 is required for the vibration to fall within a predetermined range. In example 2, the convergence time of the vibration becomes shorter, although the amplitude is larger, than in example 1. In embodiment 2, it can be said that the vibration absorbing member 33 functions as a damper that absorbs vibration.

Next, as example 3, a temporal change in vibration of the detection roller 36 in the case where the vibration damping member 33 having a viscosity coefficient equal to or higher than a predetermined value is pressed against the thickness detection device 30T by the beam 34 will be described. Fig. 15 is a graph showing a change in the thickness detection value due to vibration of the detection roller 36 in the thickness detection device 30T of example 3 in which the vibration damping member 33 having a viscosity coefficient equal to or higher than a predetermined value is pressed by the beam 34.

As shown in fig. 15, the detection value of the thickness sensor mounted on the sensor substrate 32 vibrates by the vibration of the detection roller 36 occurring at time t=0. As shown by the circular surrounding portion in fig. 15, a time of about time t= (t 1/2) is required for the vibration to fall within a predetermined range. Example 3 the convergence time of the vibration becomes shorter than example 2. In example 3, the viscosity coefficient of the vibration absorbing member 33 is equal to or higher than the predetermined value, and the vibration absorbing member 33 is pressed by the beam 34 having higher rigidity than the vibration absorbing member 33, so that the damper performance for absorbing vibration is further improved.

According to the above, the damper member 33 converges the vibration of the detection roller 36 in a shorter time from high to low in the damper performance absorbing the vibration in the order of embodiment 3, embodiment 2, and embodiment 1. Therefore, according to these embodiments, the vibration of the detection roller 36 due to the impact when the bill is projected between the reference roller 35 and the detection roller 36 can be suppressed to improve the accuracy of the thickness detection of the bill. Further, even in a structure in which the banknote discriminating device 30 and the thickness detecting device 30T are openably and closably mounted by being divided into the upper units 30U and 30TU and the lower units 30L and 30TL, vibration of the detecting roller 36 can be suppressed. Therefore, it is possible to achieve both maintenance and removal of the banknote jam occurring between the reference roller 35 and the detection roller 36.

The present invention is not limited to the above-described embodiments, and various modifications are included. For example, the above-described embodiments are described in detail for the purpose of easily understanding the present invention, and are not limited to the configuration having all the described structures. Further, as long as there is no conflict, a part of the structure of one embodiment may be replaced with the structure of another embodiment, or the structure of another embodiment may be added to the structure of one embodiment. In addition, a part of the structure of each embodiment can be added, deleted, replaced, combined, and divided. The processes described in the embodiments may be appropriately distributed or combined based on the processing efficiency or the mounting efficiency.

Claims

1. A sheet thickness detection device for detecting the thickness of a sheet, comprising:

1 st unit, possess the reference roller; and

a unit 2 including a detection roller that is conveyed with the reference roller with the sheet therebetween, the detection roller being displaced relative to the reference roller in accordance with a thickness of the sheet, and a thickness sensor that detects the thickness of the sheet based on an amount of displacement of the detection roller;

the 1 st unit and the 2 nd unit are assembled so as to be openable and closable about a rotation shaft provided on one end side of the conveyance path, and form the conveyance path of the sheet by overlapping the reference roller and the detection roller with the sheet interposed therebetween;

the 2 nd unit includes a vibration damping member in the thickness sensor.

2. The paper thickness detecting apparatus according to claim 1, wherein,

the vibration damping member is deformed in a viscous manner in a vibration damping direction for damping vibration of the detection roller.

3. The paper thickness detecting apparatus according to claim 2, wherein,

the 2 nd unit has a bracket for supporting the thickness sensor to face the detection roller;

the vibration damping member is disposed on the bracket.

4. The paper thickness detecting apparatus according to claim 1, wherein,

the viscosity coefficient of the vibration damping member is equal to or greater than a predetermined value.

5. The paper thickness detecting apparatus according to claim 4, wherein,

and a pressing member having a rigidity higher than that of the vibration damping member, the pressing member pressing the vibration damping member together with the arrangement surface of the vibration damping member.

6. The paper thickness detecting apparatus according to claim 5, wherein,

the pressing member is an existing member of the 2 nd unit having a function other than pressing of the vibration damping member;

the vibration damping member is filled between the arrangement surface and the pressing member.

7. A paper sheet identifying device is characterized in that,

a paper thickness detection device according to any one of claims 1 to 6.

8. A paper sheet handling apparatus is characterized in that,

a paper sheet identifying device as defined in claim 7.