JP2786744B2 - Paper thickness detector - Google Patents
Paper thickness detectorInfo
- Publication number
- JP2786744B2 JP2786744B2 JP2332987A JP33298790A JP2786744B2 JP 2786744 B2 JP2786744 B2 JP 2786744B2 JP 2332987 A JP2332987 A JP 2332987A JP 33298790 A JP33298790 A JP 33298790A JP 2786744 B2 JP2786744 B2 JP 2786744B2
- Authority
- JP
- Japan
- Prior art keywords
- detection
- roller
- arm
- thickness
- detection arm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Description
【発明の詳細な説明】 ［発明の目的］ （産業上の利用分野） 本発明は、例えば紙幣鑑査装置などにおいて、搬送さ
れる紙幣の厚さを検知する場合に適用し得る紙葉類の厚
さ検知装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Purpose of the Invention] (Industrial application field) The present invention relates to the thickness of paper sheets that can be applied to the case of detecting the thickness of a conveyed banknote, for example, in a banknote inspection device. The present invention relates to a sensor.
（従来の技術） 例えば紙幣鑑査装置のように、高速で搬送されてくる
紙幣１枚１枚の持っている情報を読み取る装置におい
て、紙幣の厚さを検知することは重要な項目の１つであ
る。このような目的のための厚さ検知装置は、搬送され
てきた紙幣が１枚であるかどうか、また、テープ等が貼
られていないかどうかなどを判別するため、５ミクロン
程度の高い分解能と200ミクロン以上の測定範囲が要求
されている。(Conventional technology) For example, in a device for reading information held by each banknote conveyed at a high speed, such as a banknote inspection device, detecting the thickness of a banknote is one of important items. is there. The thickness detecting device for such a purpose has a high resolution of about 5 microns to determine whether a single bill has been conveyed and whether a tape or the like has been stuck. A measurement range of 200 microns or more is required.
従来の厚さ検知装置の構成及び動作を第３図に従って
説明する。The configuration and operation of the conventional thickness detecting device will be described with reference to FIG.
厚さの測定基準となる基準ローラａ上に検知ローラｂ
を接触させ、この検知ローラｂの軸ｃを検知アームｄの
先端に取り付け、検知アームｄの他端に取り付けられた
回転軸ｅをボールベアリング等により回転自在に支持
し、回転軸ｅと直結された回転角検出用のホールセンサ
等の検出器ｆなどで回転角を検出し、紙幣ｇの厚さを検
出していた。検知アームｄは押圧用ばねｈによって付勢
されることにより基準ローラａに押圧されている。検知
ローラｂと基準ローラａとの間に搬送ベルト等で搬送さ
れてくる紙葉類としての紙幣ｇを通過させることによ
り、その通過する紙幣ｇの厚さによる検知ローラｂの変
位を検知アームｄの回転軸ｅの回転角度として検出器ｆ
は検出し、電気信号に変換するものである。A detection roller b is placed on a reference roller a serving as a thickness measurement reference.
And the shaft c of the detection roller b is attached to the tip of the detection arm d. The rotation shaft e attached to the other end of the detection arm d is rotatably supported by a ball bearing or the like, and is directly connected to the rotation shaft e. The rotation angle is detected by a detector f such as a hall sensor for detecting the rotation angle, and the thickness of the banknote g is detected. The detection arm d is pressed by the reference roller a by being urged by the pressing spring h. By passing a bill g as a paper sheet conveyed by a conveyor belt or the like between the detection roller b and the reference roller a, the displacement of the detection roller b due to the thickness of the passing bill g is detected by the detection arm d. As the rotation angle of the rotation axis e of the detector f
Is to detect and convert it to an electrical signal.
なお、ｊは検出器ｆが取付けられる支持部材であり、
ｋは支持部材ｊに突設され前記押圧用ばねｈの他端を支
持するばね受け軸である。Here, j is a support member to which the detector f is attached,
k is a spring bearing shaft projecting from the support member j and supporting the other end of the pressing spring h.
これらの部品から構成される検知ユニットｌを紙幣ｇ
の搬送方向と直交する方向に複雑配置し、各々の検知ユ
ニットｌの信号から紙幣ｇの一部または全体の厚さを検
出する。The detection unit l composed of these components is inserted into a bill g
Are arranged in a direction orthogonal to the transport direction of the banknote g, and the thickness of a part or the whole of the banknote g is detected from the signal of each detection unit l.
しかし、このような構造の厚さ検出装置では、検知ア
ームｄの回転軸ｅを支持するためのボールベアリングな
どのガタがあるため、検知ローラｂの数ミクロン程度の
変位は，このガタによって吸収されて検知アームｄが回
転しないため、非常に薄いテープの貼られた紙幣ｇを検
出できない。However, in the thickness detection device having such a structure, since there is a play such as a ball bearing for supporting the rotation axis e of the detection arm d, a displacement of about several microns of the detection roller b is absorbed by the play. Therefore, since the detection arm d does not rotate, the banknote g on which a very thin tape is stuck cannot be detected.
また、検知ローラｂを基準ローラａ側に押圧するため
の押圧用ばねｈおよびばね受け軸ｋが必要となり、部品
点数が多く、また、構成が複雑かつ大型になる。Further, a pressing spring h and a spring bearing shaft k for pressing the detection roller b toward the reference roller a are required, so that the number of components is large, and the configuration is complicated and large.
また、検知アームｄの回転軸ｅに回転角度を検出する
検出器ｆを取付けるため、紙葉類の搬送方向と直交する
方向の幅寸法が大きくなる。このため、紙幣ｇ全体の厚
さを検知するためには、一つの検知アームｄに複数また
は幅の広い検知ローラｂを取り付けて厚みを検出する方
法が取られていたが、検知ローラｂを基準ローラａに一
様に接触させるための調整が難しく、安定した検知状態
が得られないといった欠点があった。Further, since the detector f for detecting the rotation angle is attached to the rotation shaft e of the detection arm d, the width dimension in the direction orthogonal to the paper sheet transport direction is increased. For this reason, in order to detect the thickness of the entire bill g, a method of attaching a plurality of or wide detection rollers b to one detection arm d and detecting the thickness has been adopted. There is a drawback in that it is difficult to make an adjustment to uniformly contact the roller a, and a stable detection state cannot be obtained.
（発明が解決しようとする課題） このように、従来の厚さ検知装置にあっては、検知ア
ームの回動支点部のガタにより、微小な変位状態を検出
できない。また、検知ローラを基準ローラ側に押圧する
ための押圧用のばねが必要となり構成が複雑かつ大型に
なる。また、紙葉類の搬送方向と直交する方向の幅寸法
が大きく、検知ローラを基準ローラに一様に接触させる
ための調整が難しいといった問題があった。(Problems to be Solved by the Invention) As described above, in the conventional thickness detection device, a minute displacement state cannot be detected due to the play of the rotation fulcrum of the detection arm. Further, a pressing spring for pressing the detection roller toward the reference roller is required, and the configuration is complicated and large. In addition, there is a problem that the width dimension in the direction orthogonal to the sheet conveying direction is large, and it is difficult to adjust the detection roller to uniformly contact the reference roller.
本発明は、上記事情に基づきなされたもので、その目
的とするところは、構成の簡素化および小型化が図れ、
しかも、面倒で時間のかかる調整作業が不要で、かつ微
小な変位動作をも確実に検知して精度の高い厚さ検知が
行える紙葉類の厚さ検知装置を提供しようとするもので
ある。The present invention has been made based on the above circumstances, and aims to simplify and reduce the size of the configuration.
Moreover, it is an object of the present invention to provide a sheet thickness detecting apparatus which does not require a troublesome and time-consuming adjustment operation, and which can reliably detect a minute displacement operation and perform highly accurate thickness detection.
［発明の構成］ （課題を解決するための手段） 本発明は上記課題を解決するために、厚さの判定基準
となる基準ローラと、この基準ローラ上に接触して設け
られた検知ローラと、一端部に前記検知ローラが設けら
れ、他端部に位置した回動支点部の回りで回動可能に設
けられているとともに、前記基準ローラと検知ローラと
の間を通る紙葉類の厚さに応じて回動変位する検知アー
ムと、長さ方向の一部が前記検知アームの回動支点部と
装置本体のベースとに固着され、捩じれることにより前
記検知アームを回動可能に支持しているとともに、初期
捩じれ力により前記検知ローラを基準ローラ側に付勢し
たトーションバーと、前記基準ローラと前記検知ローラ
との間に紙葉類が送り込まれた際、前記トーションバー
の捩じれによる前記検知アームの回動変位量を電気信号
に変換する検知手段と、前記検知アームと前記ベースと
の間に設けられ、前記基準ローラと前記検知ローラとの
間に紙葉類が送り込まれた際の前記検知アームの振動を
減衰する減衰部材と、を具備している。[Constitution of the Invention] (Means for Solving the Problems) In order to solve the above problems, the present invention provides a reference roller serving as a thickness criterion, and a detection roller provided in contact with the reference roller. The detection roller is provided at one end, and is rotatably provided around a rotation fulcrum located at the other end, and the thickness of a sheet passing between the reference roller and the detection roller. The detection arm which is rotated and displaced in accordance with the above, a part of the length in the length direction is fixed to the rotation fulcrum of the detection arm and the base of the apparatus main body, and the detection arm is rotatably supported by being twisted. And a torsion bar that urges the detection roller toward the reference roller by an initial twisting force, and when a sheet is fed between the reference roller and the detection roller, the torsion bar is twisted. The detection Detecting means for converting the amount of rotational displacement of the system into an electric signal; and said detecting means provided between the detecting arm and the base, and when a sheet is fed between the reference roller and the detecting roller. A damping member for damping the vibration of the detection arm.
（作用） 上記手段によれば、検知アームの回動支点部をトーシ
ョンバーにより回動可能に支持すると同時に検知アーム
を基準ローラに押し付ける構成としたから、回動支点部
のガタがなく検知ローラの微小な変位が正確に検知アー
ムの回動変位として現れる。これにより、微小な変位動
作をも確実に検知して精度の高い厚さ検知が行える。ま
た、検知アームを基準ローラに押し付けるための押圧用
のばね、および、ばね受け軸等が不要となり、部品点数
の低減が図れ、構成の簡素化と小形化が可能となる。(Operation) According to the above-described means, since the rotation fulcrum of the detection arm is rotatably supported by the torsion bar and the detection arm is pressed against the reference roller at the same time, there is no backlash of the rotation fulcrum and the detection roller The minute displacement accurately appears as a rotational displacement of the detection arm. As a result, even a minute displacement operation can be reliably detected, and highly accurate thickness detection can be performed. Further, a pressing spring for pressing the detection arm against the reference roller, a spring bearing shaft, and the like are not required, so that the number of parts can be reduced, and the configuration can be simplified and downsized.
さらに、検知アームの変位量を検知手段で検知するよ
うにしたから、従来のように検知アームの回転軸の一端
部に検出器を直結するものに比べて、紙葉類の搬送方向
と直交する方向の小形化が可能となり、検知ローラを基
準ローラに一様に接触させるための調整作業の簡略化が
図れるととともに、より安定した検知動作が可能とな
る。Further, since the displacement amount of the detection arm is detected by the detection means, it is perpendicular to the sheet conveyance direction as compared with the conventional configuration in which the detector is directly connected to one end of the rotation shaft of the detection arm. It is possible to reduce the size of the direction, simplify the adjustment work for bringing the detection roller into uniform contact with the reference roller, and perform a more stable detection operation.
（実施例） 以下、本発明の一実施例について図面を参照して説明
する。Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
第１図、第２図において、１は厚さの測定基準になる
基準ローラであり、この基準ローラ１上に検知ローラ２
が接触している。この検知ローラ２は検知アーム３の一
端に回転自在に軸支されている。In FIG. 1 and FIG. 2, reference numeral 1 denotes a reference roller serving as a reference for measuring the thickness.
Are in contact. The detection roller 2 is rotatably supported at one end of a detection arm 3.
検知アーム３の他端にはトーションバー４がロー付け
等により固定されており、トーションバー４の両端部は
ベース５の下端一側から水平に突出する一対の支持腕5
a,5aを貫通させた状態でロー付け等により取り付けられ
ている。A torsion bar 4 is fixed to the other end of the detection arm 3 by brazing or the like. Both ends of the torsion bar 4 are a pair of support arms 5 projecting horizontally from one lower end of the base 5.
It is attached by brazing or the like with a, 5a penetrating therethrough.
トーションバー４は、ねじり方向の剛性は小さく、曲
げ方向の剛性が高いため、紙幣６が検知ローラ２と基準
ローラ１の間に突入したときに、検知アーム３はトーシ
ョンバー４の取付け部を回動中心として回動運動を行う
ことができる。The torsion bar 4 has a low rigidity in the twisting direction and a high rigidity in the bending direction. Therefore, when the bill 6 enters between the detection roller 2 and the reference roller 1, the detection arm 3 rotates around the mounting portion of the torsion bar 4. Rotational movement can be performed as a moving center.
また、検知アーム３とベース５との間には、ゴム部材
７が挟み込まれていて圧縮された状態となっており、検
知アーム３に減衰を与えるようになっている。Further, a rubber member 7 is sandwiched between the detection arm 3 and the base 5 and is in a compressed state, so that the detection arm 3 is attenuated.
紙幣６の厚さは、検知アーム３に取り付けられたレバ
ー８が、例えばフォトダイオードとLEDからなる検知手
段としての光学式の検出器９を遮る位置の変化から出力
電圧が変化することにより検出するようになっている。The thickness of the banknote 6 is detected by a change in the output voltage from a change in the position at which the lever 8 attached to the detection arm 3 blocks an optical detector 9 as a detection unit including, for example, a photodiode and an LED. It has become.
しかして、検知ローラ２と基準ローラ１の間に、図示
しない搬送ベルト等で紙幣６が送り込まれると、その紙
幣６の厚さに応じて検知ローラ２が上下に可動し検知ア
ーム３がトーションバー４に捩じり力を加えて回動変位
する。そして、検知アーム３と一体のレバー８が変位
し、検出器９を遮る位置が変位するため厚さを検出でき
る。When the bill 6 is fed between the detection roller 2 and the reference roller 1 by a conveyor belt or the like (not shown), the detection roller 2 moves up and down according to the thickness of the bill 6, and the detection arm 3 is moved by the torsion bar. 4 is displaced by applying a torsional force. Then, the lever 8 integrated with the detection arm 3 is displaced, and the position blocking the detector 9 is displaced, so that the thickness can be detected.
このとき、ゴム部材７によって、紙幣６が検知ローラ
２と基準ローラ１とに間に突入した後の検知アーム３の
トーションバー４を中心とした回動運動の振動を内部減
衰により減衰させることになる。At this time, the vibration of the rotation movement of the detection arm 3 about the torsion bar 4 after the bill 6 enters between the detection roller 2 and the reference roller 1 is attenuated by the internal damping by the rubber member 7. Become.
また、上記の構成とすることにより、従来の厚さ検知
ユニットと比較して、紙幣の搬送方向と直交する方向の
幅の狭い検知ユニット10が構成できる。これにより、一
つの検知アームに幅の広いまたは複数の検知ローラを取
り付ける必要がなくなり、検知ローラ２と基準ローラ１
との接触状態の調整が簡略化される。In addition, with the above configuration, the detection unit 10 having a smaller width in the direction orthogonal to the bill conveying direction can be configured as compared with the conventional thickness detection unit. This eliminates the need to attach a wide or a plurality of detection rollers to one detection arm.
Adjustment of the state of contact with the device is simplified.
この検知ユニット10を紙幣６の搬送方向と直交する方
向に複数個配置し、厚さを検出することにより、紙幣６
の一部および全面の厚さを検出することができる。By arranging a plurality of the detection units 10 in a direction orthogonal to the transport direction of the bill 6, and detecting the thickness, the bill 6
The thickness of a part of and the entire surface can be detected.
また、従来のようにボールベアリング等で検知アーム
の回転軸を支持していた場合には、非常に薄いテープな
どが貼り付けられた紙幣による検知ローラの微小な変位
は、ベアリングのガタのため検知アームが回転しないで
検出できなかったが、トーションバー４で検知アーム３
を支持することにより微小な変位も検出でき、検出性能
が向上する。In addition, when the rotation axis of the detection arm is supported by a ball bearing or the like as in the past, the minute displacement of the detection roller due to bills with extremely thin tape etc. is detected due to the backlash of the bearing. Although the arm could not be detected without rotation, the torsion bar 4 detected the arm 3
By supporting, a small displacement can be detected, and the detection performance is improved.
さらに、初期的にトーションバー４は基準ローラ１に
押し付けられ、捩じられた状態で検知アーム３を基準ロ
ーラ１側に押圧しており、押圧用のばねが不要となる。Further, initially, the torsion bar 4 is pressed against the reference roller 1 and presses the detection arm 3 toward the reference roller 1 in a twisted state, so that a pressing spring is not required.
なお、前記実施例では厚さ検知を行う紙葉類が紙幣の
場合について説明したが、本発明はこれに限定されるも
のでなく、例えば小切手などの紙幣以外の有価証券の厚
さ検知にも同様に適用できる。In the above-described embodiment, the case where the paper sheet for performing the thickness detection is a bill is described.However, the present invention is not limited to this. For example, the present invention is also applicable to the thickness detection of a securities other than a bill such as a check. The same applies.
［発明の効果］ 以上説明したように本発明によれば、構成の簡素化お
よび小型化が図れ、しかも、面倒で時間のかかる調整作
業が不要で、かつ微小な変位動作をも確実に検知して精
度の高い厚さ検知が行える紙葉類の厚さ検知装置を提供
できるといった効果を奏する。[Effects of the Invention] As described above, according to the present invention, the configuration can be simplified and downsized, and troublesome and time-consuming adjustment work is not required, and even a minute displacement operation can be reliably detected. Thus, it is possible to provide a sheet thickness detecting device capable of performing highly accurate thickness detection.
第１図は本発明の厚さ検知装置の一実施例を示す構成
図、第２図は同実施例における要部の分解斜視図、第３
図は従来の厚さ検知装置の構成図である。 １…基準ローラ、２…検知ローラ、３…検知アーム、４
…トーションバー、９…検出器（検知手段）。FIG. 1 is a block diagram showing an embodiment of a thickness detecting device according to the present invention, FIG. 2 is an exploded perspective view of a main part in the embodiment, and FIG.
FIG. 1 is a configuration diagram of a conventional thickness detecting device. DESCRIPTION OF SYMBOLS 1 ... Reference roller, 2 ... Detection roller, 3 ... Detection arm, 4
... torsion bar, 9 ... detector (detection means).
Claims (1)
回動支点部の回りで回動可能に設けられているととも
に、前記基準ローラと検知ローラとの間を通る紙葉類の
厚さに応じて回動変位する検知アームと、 長さ方向の一部が前記検知アームの回動支点部と装置本
体のベースとに固着され、捩じれることにより前記検知
アームを回動可能に支持しているとともに、初期捩じれ
力により前記検知ローラを基準ローラ側に付勢したトー
ションバーと、 前記基準ローラと前記検知ローラとの間に紙葉類が送り
込まれた際、前記トーションバーの捩じれによる前記検
知アームの回動変位量を電気信号に変換する検知手段
と、 前記検知アームと前記ベースとの間に設けられ、前記基
準ローラと前記検知ローラとの間に紙葉類が送り込まれ
た際の前記検知アームの振動を減衰する減衰部材と、 を具備してなることを特徴とする紙葉類の厚さ検知装
置。1. A reference roller serving as a reference for determining a thickness, a detection roller provided in contact with the reference roller, and a rotation fulcrum provided at one end and provided at the other end. A detection arm that is rotatably provided around the portion and that is rotated and displaced in accordance with the thickness of a sheet passing between the reference roller and the detection roller; The detection arm is fixed to the rotation fulcrum portion of the detection arm and the base of the apparatus main body, and the detection arm is rotatably supported by being twisted, and the detection roller is urged toward the reference roller by an initial twisting force. A torsion bar; detecting means for converting, when a sheet is fed between the reference roller and the detecting roller, a rotational displacement amount of the detecting arm due to twisting of the torsion bar into an electric signal; arm And a damping member provided between the base and the reference roller and the detection roller to attenuate vibration of the detection arm when paper is fed between the reference roller and the detection roller. Paper thickness detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2332987A JP2786744B2 (en) | 1990-11-29 | 1990-11-29 | Paper thickness detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2332987A JP2786744B2 (en) | 1990-11-29 | 1990-11-29 | Paper thickness detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04198802A JPH04198802A (en) | 1992-07-20 |
| JP2786744B2 true JP2786744B2 (en) | 1998-08-13 |
Family
ID=18261040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2332987A Expired - Fee Related JP2786744B2 (en) | 1990-11-29 | 1990-11-29 | Paper thickness detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2786744B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009028109A1 (en) * | 2007-08-31 | 2009-03-05 | Glory Ltd. | Thickness detector of paper |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040034887A (en) * | 2002-10-17 | 2004-04-29 | 삼성전자주식회사 | Image printing apparatus |
| JP4879550B2 (en) * | 2005-10-11 | 2012-02-22 | 凸版印刷株式会社 | Work thickness inspection device, work transport device and discharge device |
| JP4719638B2 (en) * | 2006-07-04 | 2011-07-06 | キヤノン株式会社 | Sheet conveying apparatus and image forming apparatus |
| US8496246B2 (en) | 2007-08-31 | 2013-07-30 | Glory Ltd. | Thickness detector of paper |
| JP4966847B2 (en) * | 2007-12-27 | 2012-07-04 | ローレル精機株式会社 | Sheet thickness detector |
| JP2009202955A (en) * | 2008-02-26 | 2009-09-10 | Ricoh Co Ltd | Sheet-like member thickness detection device, image forming device |
| JP5263579B2 (en) * | 2008-04-09 | 2013-08-14 | 富士ゼロックス株式会社 | Position detection apparatus and image forming apparatus |
| JP2011047787A (en) * | 2009-08-27 | 2011-03-10 | Kodenshi Corp | Object detector |
| GB2498642A (en) * | 2012-01-04 | 2013-07-24 | Icubed Technologies Ltd | Sheet thickness measuring with variable pressure |
| CN112945168B (en) * | 2021-04-25 | 2023-07-21 | 沈阳中光电子有限公司 | Thickness detection device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5435664A (en) * | 1977-08-25 | 1979-03-15 | Hitachi Denshi Ltd | Delay pulse signal generation circuit |
| JPH0770758B2 (en) * | 1983-12-19 | 1995-07-31 | 松下電器産業株式会社 | Light emitting semiconductor device |
-
1990
- 1990-11-29 JP JP2332987A patent/JP2786744B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009028109A1 (en) * | 2007-08-31 | 2009-03-05 | Glory Ltd. | Thickness detector of paper |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04198802A (en) | 1992-07-20 |
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| Date | Code | Title | Description |
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| LAPS | Cancellation because of no payment of annual fees |