JP4924334B2 - Medium thickness detector - Google Patents

Medium thickness detector Download PDF

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JP4924334B2
JP4924334B2 JP2007253206A JP2007253206A JP4924334B2 JP 4924334 B2 JP4924334 B2 JP 4924334B2 JP 2007253206 A JP2007253206 A JP 2007253206A JP 2007253206 A JP2007253206 A JP 2007253206A JP 4924334 B2 JP4924334 B2 JP 4924334B2
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roller
foreign matter
movable
movable roller
displacement
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JP2009083955A (en
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幸広 根本
政光 浅村
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Oki Electric Industry Co Ltd
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Oki Electric Industry Co Ltd
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Priority to JP2007253206A priority Critical patent/JP4924334B2/en
Priority to TW097123174A priority patent/TW200915231A/en
Priority to CN2008101320393A priority patent/CN101397098B/en
Priority to KR1020080076854A priority patent/KR100974463B1/en
Publication of JP2009083955A publication Critical patent/JP2009083955A/en
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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/16—Testing the dimensions
    • G07D7/164—Thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/06—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
    • G01B5/06—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F19/00—Complete banking systems; Coded card-freed arrangements adapted for dispensing or receiving monies or the like and posting such transactions to existing accounts, e.g. automatic teller machines
    • G07F19/20—Automatic teller machines [ATMs]
    • G07F19/201—Accessories of ATMs

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Description

本発明は、金融機関の自動取引装置等に備えられ、紙幣等の媒体の厚みを検知する媒体厚み検知装置に関する。   The present invention relates to a medium thickness detection apparatus that is provided in an automatic transaction apparatus or the like of a financial institution and detects the thickness of a medium such as banknotes.

従来の媒体厚み検知装置は、可動ローラとその可動ローラが紙幣に乗り上げることによる変位を測定する厚さ検知センサとによる検出部を備え、紙幣の搬送方向の上流側に駆動ローラの軸方向に検出部を複数配置すると共に、その検出部間で紙幣に可動ローラが乗り上げない箇所を補うように紙幣の搬送方向の下流側に検出部を複数配置するようにし、２列に並んだ検出部を互い違いに配置することで紙幣に付着する異物を検知している（例えば、特許文献１参照。）。
特開２００４−８３１７２号公報（段落「００２２」−「００２３」、第１図） A conventional medium thickness detection device includes a detection unit that includes a movable roller and a thickness detection sensor that measures a displacement caused when the movable roller rides on the banknote, and detects the axial direction of the drive roller upstream of the banknote conveyance direction. A plurality of detectors are arranged, and a plurality of detectors are arranged on the downstream side in the banknote transport direction so as to compensate for the location where the movable roller does not run on the bills between the detectors, and the detectors arranged in two rows are staggered. The foreign substance adhering to a banknote is detected by arrange | positioning to (for example, refer patent document 1).
JP 2004-83172 A (paragraphs “0022”-“0023”, FIG. 1)

しかしながら、上述した従来の技術においては、検出部を２列に並べるために検出部を実装するためのスペースが多く必要となるので、媒体厚み検知装置の小型化を図ることができないという問題がある。
本発明は、上記の問題点を解決するための手段を提供することを目的とする。 However, in the above-described conventional technology, since a large space is required for mounting the detection units in order to arrange the detection units in two rows, there is a problem that the medium thickness detection device cannot be reduced in size. .
An object of the present invention is to provide means for solving the above problems.

本発明は、上記課題を解決するために、基準ローラと、該基準ローラとの間に紙幣を挟持して搬送するために前記基準ローラと平行に並べて配置された変位可能な可動ローラと、前記両ローラが紙幣を挟持したときの前記可動ローラの変位を検知する検知手段とを有する媒体厚み検知装置であって、前記各可動ローラの両端部を切り欠いて周面方向に凹部と凸部を交互に形成し、隣接する可動ローラ同士の凹部と前記凸部とを嵌め合わせて並べたことを特徴とする。 In order to solve the above problems, the present invention provides a reference roller, a displaceable movable roller arranged in parallel with the reference roller in order to sandwich and convey a bill between the reference roller, A detecting means for detecting displacement of the movable roller when both rollers sandwich a bill, wherein both end portions of each movable roller are cut out to form a concave portion and a convex portion in the circumferential direction. It is formed alternately, and the concave portions of the adjacent movable rollers and the convex portions are fitted and arranged.

これにより、本発明は、紙幣に付着した異物を確実に検知できると共に、基準ローラに対向して並んだ一列の可動ローラと厚み検知手段によって異物を検知するので、可動ローラの実装スペースを減らすことができ、よって媒体厚み検知装置の小型化を図ることができるという効果が得られる。   As a result, the present invention can reliably detect the foreign matter adhering to the banknote, and detects the foreign matter by the row of movable rollers and the thickness detecting means arranged opposite to the reference roller, thereby reducing the mounting space for the movable rollers. Therefore, the medium thickness detecting device can be downsized.

以下に、図面を参照して本発明による媒体厚み検知装置の実施例について説明する。   Embodiments of a medium thickness detection apparatus according to the present invention will be described below with reference to the drawings.

図１は実施例１の媒体厚み検知装置を示す説明図、図２は実施例１の媒体厚み検知装置を示す側面図である。
図１、図２において、１は媒体厚み検知装置であり、図示しない金融機関の自動取引装置等の内部に備えられ、図示しない紙幣搬送路により搬送された紙幣Ｐの鑑別処理を行う。 FIG. 1 is an explanatory view showing a medium thickness detection apparatus according to the first embodiment, and FIG. 2 is a side view showing the medium thickness detection apparatus according to the first embodiment.
1 and 2, reference numeral 1 denotes a medium thickness detection device, which is provided inside an automatic transaction device or the like of a financial institution (not shown), and performs a discrimination process for a bill P conveyed by a bill conveyance path (not shown).

２は基準ローラであり、両端部を媒体厚み検知装置１のフレームに固定されているベアリング３に回転可能に支持されて図示しない駆動機構により回転駆動される。
ここで、図３は可動ローラを示す斜視図である。
４は可動ローラであり、図２に示すように円筒をもとに、両端部にその円状となっている断面の４分の１を軸方向に沿って切り欠くことで形成した凹部を点対象の位置に２箇所設けており、これにより両端部には凹部と凹部以外の箇所（以下、凸部という。）が交互に形成されるようになっている。 Reference numeral 2 denotes a reference roller which is rotatably supported by a bearing 3 whose both ends are fixed to the frame of the medium thickness detecting device 1 and is driven to rotate by a driving mechanism (not shown).
Here, FIG. 3 is a perspective view showing the movable roller.
Reference numeral 4 denotes a movable roller. As shown in FIG. 2, a concave portion formed by cutting out a quarter of the circular cross section at both ends along the axial direction based on a cylinder as shown in FIG. Two locations are provided at the target position, and thereby, the concave portions and the portions other than the concave portions (hereinafter referred to as convex portions) are alternately formed at both ends.

５はシャフトであり、基準ローラ２の回転軸と平行に対向配置されて、両端を媒体厚み検知装置１のフレームにベアリングによって回転可能に支持されている。
上記の可動ローラ４は、シャフト５に弾性材の弾性体６を介し、その端部の凹部に凸部を嵌め合わせるようにして複数取り付けられることで、隣接する可動ローラ４同士がオーバーラップするように並んでいる。 Reference numeral 5 denotes a shaft, which is disposed opposite to and parallel to the rotation axis of the reference roller 2 and is supported at both ends by a bearing of the medium thickness detection device 1 so as to be rotatable by bearings.
A plurality of the movable rollers 4 are attached to the shaft 5 via an elastic body 6 made of an elastic material so that the convex portions are fitted to the concave portions at the ends thereof, so that the adjacent movable rollers 4 overlap each other. Are lined up.

また、可動ローラ４は、シャフト５と同期して回転する構造となっており、弾性体６の弾性力によって基準ローラ２に押圧されて基準ローラ２に従動し、基準ローラ２との間で紙幣を挟持したときは、弾性体６が撓んでその紙幣の厚みの分だけ持ち上げられるようになる。
１０はギャップセンサであり、非接触式の変位センサであって可動ローラ４の上方に設置され、基準ローラ２と可動ローラ４との間に挟持した紙幣の厚みによって持ち上がる可動ローラ４の変位を検出する。 In addition, the movable roller 4 has a structure that rotates in synchronization with the shaft 5, is pressed against the reference roller 2 by the elastic force of the elastic body 6, is driven by the reference roller 2, and is billed with the reference roller 2. When the card is sandwiched, the elastic body 6 is bent and lifted by the thickness of the bill.
Reference numeral 10 denotes a gap sensor, which is a non-contact type displacement sensor that is installed above the movable roller 4 and detects the displacement of the movable roller 4 that is lifted by the thickness of the bill sandwiched between the reference roller 2 and the movable roller 4. To do.

図４は媒体厚み検知装置を示すブロック図である。
図４において、１５は制御部であり、記憶部１６に格納した制御プログラムに従って、媒体厚み検知装置１の各部を制御して紙幣の正損判定処理等を行う。
１６は記憶部であり、制御部１５が実行する制御プログラムや可動ローラ４の変位検出処理を実行する変位検出処理プログラムを格納する他、制御部１５による処理結果等を記憶する。 FIG. 4 is a block diagram showing the medium thickness detection apparatus.
In FIG. 4, reference numeral 15 denotes a control unit, which controls each part of the medium thickness detection device 1 in accordance with a control program stored in the storage unit 16 and performs a banknote damage determination process and the like.
Reference numeral 16 denotes a storage unit that stores a control program executed by the control unit 15 and a displacement detection processing program that executes a displacement detection process of the movable roller 4, and stores a processing result by the control unit 15.

また、記憶部１６には基準ローラ２と可動ローラ４の間に紙幣を挟持したときに、紙幣に異物が付着していることを判定するための、ギャップセンサ１０の変位の判定値（紙幣の厚みを超え、紙幣にテープＴを貼ったときの厚み未満の範囲内の値。）が格納される。
上述した構成の作用について説明する。
図５は正常な状態の紙幣が通過するまでの可動ローラの変位を示す出力波形図、図６は異物が付着した紙幣が通過するまでの可動ローラの変位を示す出力波形図である。 Further, when the banknote is sandwiched between the reference roller 2 and the movable roller 4 in the storage unit 16, a displacement determination value of the gap sensor 10 for determining that a foreign object is attached to the banknote (the banknote The value within the range exceeding the thickness and less than the thickness when the tape T is applied to the banknote.) Is stored.
The operation of the above configuration will be described.
FIG. 5 is an output waveform diagram showing the displacement of the movable roller until the banknote in a normal state passes, and FIG. 6 is an output waveform diagram showing the displacement of the movable roller until the bill to which foreign matter is attached passes.

図示しない紙幣搬送路から搬送された紙幣を回転する基準ローラ２と可動ローラ４との間で挟持すると、その紙幣の厚みに応じて可動ローラ４が持ち上がって変位する。
ここで、紙幣にテープ等の異物が付着していない箇所を挟持した可動ローラ４は図５に示すように紙幣の厚み分だけ変位する。
一方、異物が付着した紙幣を挟持した場合、可動ローラ４の変位は図６から分かるように、基準ローラ２と可動ローラ４とで紙幣を挟持して、異物が付着した箇所に可動ローラが乗り上げると、可動ローラ４の変位は判定値を超え、可動ローラ４が異物が付着した箇所を乗り越えると変位は判定値よりも低くなる。これを認識した制御部１５は紙幣が損券であると判断する。 When a bill conveyed from a bill conveyance path (not shown) is sandwiched between a rotating reference roller 2 and a movable roller 4, the movable roller 4 is lifted and displaced according to the thickness of the bill.
Here, as shown in FIG. 5, the movable roller 4 holding the portion where no foreign matter such as a tape is attached to the bill is displaced by the thickness of the bill.
On the other hand, when a banknote with foreign matter attached is sandwiched, the displacement of the movable roller 4 is grasped between the reference roller 2 and the movable roller 4 as shown in FIG. Then, the displacement of the movable roller 4 exceeds the determination value, and the displacement becomes lower than the determination value when the movable roller 4 gets over the place where the foreign matter is attached. Recognizing this, the control unit 15 determines that the banknote is a damaged ticket.

なお、紙幣に付着した異物の位置が、可動ローラ４の凹部となる箇所の場合は、可動ローラ４の凹部で異物に乗り上げない箇所では出力波形は紙幣の厚み分変位するだけだが、その凹部に嵌まり合う隣接する可動ローラ４の凸部が異物に乗り上げる。
ここで、図７は可動ローラ間に異物があるときのギャップセンサによる異物検知領域を示す説明図であり、（ａ）はギャップセンサ１０ａでの異物の検知領域で示し、（ｂ）はギャップセンサ１０ｂでの異物の検知領域を示している。 In addition, when the position of the foreign matter adhering to the banknote is a portion that becomes a concave portion of the movable roller 4, the output waveform is merely displaced by the thickness of the banknote at a location where the movable roller 4 does not run over the foreign matter. The convex portions of the adjacent movable rollers 4 that fit together ride on the foreign matter.
Here, FIG. 7 is an explanatory view showing a foreign object detection area by the gap sensor when there is a foreign object between the movable rollers, (a) showing the foreign object detection area in the gap sensor 10a, and (b) showing the gap sensor. The foreign substance detection area at 10b is shown.

図８は可動ローラ間に異物がある場合の異物の検知による変位量を示す出力波形図であり、（ａ）はギャップセンサ１０ａでの異物の検知による変位量を示し、（ｂ）はギャップセンサ１０ｂでの異物の検知による変位量を示す。
ここで、可動ローラ４間に異物があるときの各可動ローラ４の変位を検出するギャップセンサ１０を区別するために、識別子としてａまたはｂを付与して説明する。 FIG. 8 is an output waveform diagram showing the amount of displacement due to foreign object detection when there is a foreign object between the movable rollers. FIG. 8A shows the amount of displacement due to foreign object detection by the gap sensor 10a, and FIG. The displacement amount by the detection of the foreign matter at 10b is shown.
Here, in order to distinguish the gap sensor 10 that detects the displacement of each movable roller 4 when there is a foreign object between the movable rollers 4, a or b is given as an identifier.

図７（ａ）、（ｂ）において、斜線で示す箇所はギャップセンサ１０ａ、１０ｂの出力結果に基づく、異物の出力が出ず異物を検知できない検知不可領域を示している。
紙幣検知開始時に可動ローラ４はその凹部が異物に重なるように回転すると異物を避けるような状態となった場合、図７（ａ）に示すように、最初は異物の出力が出ない検知不可領域Ａ、そのまま回転して凸部が異物に乗り上げたときに異物の出力が出る検知領域Ｂ、さらに凸部が異物から離れて凹部が異物に重なると異物の出力が出ない検知不可領域Ｃ、また凸部が異物に乗り上げると異物の出力が出る検知領域Ｄとなるように、異物の出力が出る検知領域と出ない検知不可領域が交互に表れるようになる。 In FIGS. 7A and 7B, the hatched portions indicate non-detectable areas where foreign matter is not output and foreign matter cannot be detected based on the output results of the gap sensors 10a and 10b.
When the movable roller 4 is rotated so that the concave portion overlaps the foreign matter at the start of bill detection, as shown in FIG. 7 (a), the foreign matter cannot be output at first, as shown in FIG. A, a detection area B in which the output of the foreign matter is output when the convex portion rides on the foreign matter by rotating as it is, a non-detectable region C in which the output of the foreign matter is not output when the convex portion is separated from the foreign matter and the concave portion overlaps the foreign matter, The detection area where the output of the foreign matter is output and the non-detectable area where the output of the foreign matter does not appear appear alternately so that the detection area D where the output of the foreign matter is output when the convex portion rides on the foreign matter.

そのため、このような場合のギャップセンサ１０ａの出力波形図は図８（ａ）に示すように、最初の異物の出力が出ない検知不可領域Ａと途中で凸部が異物から離れて凹部が異物に重なると異物の出力が出ない検知不可領域Ｃに該当する箇所では波形は紙幣の厚みだけの変位が表れ、凸部が異物に乗り上げたときに異物の出力が出る検知領域Ｂと検知領域Ｄに該当する箇所では異物の厚みを加えた変位が表れるようになり、全く異物を検知できないことはなくなる。   Therefore, as shown in FIG. 8A, the output waveform diagram of the gap sensor 10a in such a case is the undetectable area A where the first foreign matter is not output, and the convex portion is separated from the foreign matter and the concave portion is foreign. The detection region B and the detection region D in which the waveform is displaced by the thickness of the banknote and the output of the foreign material is output when the convex portion rides on the foreign material. A displacement including the thickness of the foreign matter appears at a location corresponding to the above, and the foreign matter cannot be detected at all.

一方、隣接する可動ローラ４は上記と逆に最初に凸部が異物に乗り上げるので、図７（ｂ）に示すように、最初は異物の出力が出る検知領域Ａ´と次に異物の出力が出ない検知不可領域Ｂ´、異物の出力が出る検知領域Ｃ´、異物の出力が出ない検知不可領域Ｄ´の順になり、検知領域と検知不可領域とが図７（ａ）に示す状態と逆転して交互に表れる。
よって、ギャップセンサ１０ｂの出力波形図は図８（ｂ）に示すように、最初の異物の出力が出る検知領域Ａ´とその後で異物の出力が出る検知領域Ｃ´に該当する箇所では異物の厚みを加えた変位が表れ、途中の異物の出力が出ない検知不可領域Ｂ´、Ｄ´に該当する箇所では紙幣の厚みだけの変位が表れるようになって、図８（ａ）に示す出力波形図と比較して異物の変位が表れる箇所が逆転して表れる。 On the other hand, the adjacent movable roller 4 has a convex portion that first climbs over the foreign object, as shown in FIG. 7B. Therefore, as shown in FIG. The detection undetectable area B ′ where no foreign matter is output, the detection area C ′ where foreign matter output is output, and the non-detectable area D ′ where foreign matter output is not output are in the order shown in FIG. 7A. Reverse and appear alternately.
Therefore, as shown in FIG. 8B, the output waveform diagram of the gap sensor 10b shows that there is no foreign matter at a position corresponding to the detection region A ′ where the first foreign matter output is output and the detection region C ′ where the foreign matter output is thereafter output. A displacement corresponding to the thickness of the banknote appears at a location corresponding to the undetectable areas B ′ and D ′ where the output of the foreign matter does not appear in the middle, and the output shown in FIG. Compared with the waveform diagram, the portion where the displacement of the foreign matter appears is reversed.

以上より、一方の可動ローラ４がその凹部によって異物を避けてしまっても、その凹部に嵌まり合うように隣接する他方の可動ローラ４の凸部が異物に乗り上げるので、異物がどのような位置にあっても検知できるようになっている。
次に可動ローラ４が異物に一部乗り上げた片乗りの状態での変位の大きさを、従来用いられていたローラが片乗りしたときの変位と比較して説明する。 From the above, even if one movable roller 4 avoids the foreign matter by the concave portion, the convex portion of the other movable roller 4 adjacent to the concave portion rides on the foreign matter so as to fit into the concave portion. It can be detected even if there is.
Next, the magnitude of the displacement when the movable roller 4 partially rides on the foreign object is compared with the displacement when the conventionally used roller is unilaterally described.

図９は従来のローラと可動ローラとの寸法比較図であり、（ａ）は従来のローラを示し、（ｂ）は可動ローラを示している。
従来のローラの回転軸に平行な両端部の長さは（ａ）に示すＬとし、また可動ローラ４の凹部間での回転軸に平行な両端部の長さは（ｂ）に示すＬとする。
また、可動ローラ４の端部の凹部と凸部間の長さは（ｂ）に示すａとする。 FIG. 9 is a dimensional comparison diagram between a conventional roller and a movable roller. FIG. 9A shows a conventional roller, and FIG. 9B shows a movable roller.
The length of both ends parallel to the rotation axis of the conventional roller is L as shown in (a), and the length of both ends parallel to the rotation axis between the recesses of the movable roller 4 is L as shown in (b). To do.
Further, the length between the concave portion and the convex portion at the end of the movable roller 4 is a shown in (b).

図１０は異物に片乗りした状態での変位を比較した説明図であり、（ａ）は従来のローラの場合を示し、（ｂ）は可動ローラの場合を示す。
ここで、異物の厚みはｔとし、従来のローラと可動ローラ４は共に中心からＸだけ離れた位置で異物に片乗りしているものとする。
上記の状態で従来のローラが片乗りしているときの変位Δｇ０は、 FIGS. 10A and 10B are explanatory views comparing displacements in a state where the foreign object is unilaterally mounted. FIG. 10A shows a case of a conventional roller, and FIG. 10B shows a case of a movable roller.
Here, it is assumed that the thickness of the foreign matter is t, and the conventional roller and the movable roller 4 are both on the foreign matter at a position separated by X from the center.
The displacement Δg0 when the conventional roller is riding on one side in the above state is

Figure 0004924334
で表わせる。（Δはデルタを示す。）
一方、本発明の可動ローラ４が片乗りしているときの変位Δｇは、
Figure 0004924334
 It can be expressed as (Δ indicates delta)
On the other hand, the displacement Δg when the movable roller 4 of the present invention is on one side is:

Figure 0004924334
で表わすことができ、変位Δｇと変位Δｇ０との差は、
Figure 0004924334
 The difference between the displacement Δg and the displacement Δg0 is

Figure 0004924334
で表わすことができる。ただしＬ、ａ、Ｘ、ｔは０より大きいものとする。
式３より、可動ローラ４を設けた場合の変位は従来のローラでの変位よりも大きくなることが明らかとなる
以上説明したように、本実施例では、紙幣に付着した異物が可動ローラ間を通過するような場合であっても、隣接する可動ローラの凹部と凸部とが嵌まり合うように並ぶことでオーバーラップするようになっているので、可動ローラの凹部が異物と重なってしまっても隣接する可動ローラの凸部が異物に乗り上げるため、確実に異物の検知を行うことができる。
Figure 0004924334
 It can be expressed as However, L, a, X, and t are assumed to be larger than zero.
From the equation 3, it is clear that the displacement when the movable roller 4 is provided is larger than the displacement with the conventional roller. As described above, in this embodiment, the foreign matter adhering to the bills moves between the movable rollers. Even if it passes, the concave and convex parts of the adjacent movable roller overlap each other so that the concave parts and the convex parts fit together. Since the convex part of the adjacent movable roller rides on the foreign matter, the foreign matter can be reliably detected.

また、基準ローラに対向する一列の可動ローラが紙幣に付着した異物に確実に乗り上げるので、従来のように平行して他のローラ列を設ける必要が無くなるので、実装スペースを減らして媒体厚み検知装置の小型化を図ることができるという効果が得られる。
加えて、可動ローラが異物に片乗りした場合の変位が従来のローラの変位に比べて大きくなるので、より異物検知の精度を向上させることができる。 In addition, since one row of movable rollers facing the reference roller surely rides on the foreign matter adhering to the banknote, it is not necessary to provide another roller row in parallel as in the prior art, so the mounting space is reduced and the medium thickness detection device The effect that it can achieve size reduction of is obtained.
In addition, since the displacement when the movable roller rides on the foreign object is larger than the displacement of the conventional roller, the accuracy of foreign object detection can be further improved.

なお、本実施例においては、紙幣を例に説明したが、紙幣に限らずに小切手等の有価証券、ＯＣＲ用紙、プリンター用紙といった媒体に対して使用しても同様の効果を得ることができる。
なお、紙幣に付着した異物が隣接する可動ローラの凹部と凸部との隙間に位置した場合、紙幣の搬送方向に対して異物の長さが凹部より短いとその異物を検知できないこととなる。そこで上記実施例１においては、可動ローラの両端部を切り欠いて形成した凹部と凸部の大きさをその円断面の４分の１として説明したが、これに限らず断面の８分の１づつの大きさで凹部と凸部を交互に設ける等、凹部と凸部の数を増やすようにすれば、より細やかな異物を検知することができるという効果が得られる。 In the present embodiment, a banknote has been described as an example. However, the same effect can be obtained even when used for a medium such as a security such as a check, OCR paper, or printer paper as well as a banknote.
In addition, when the foreign material adhering to a banknote is located in the clearance gap between the recessed part and convex part of an adjacent movable roller, if the length of a foreign material is shorter than a recessed part with respect to the conveyance direction of a banknote, the foreign material cannot be detected. Thus, in the first embodiment, the size of the concave and convex portions formed by cutting out both end portions of the movable roller has been described as a quarter of the circular cross section. If the number of the concave portions and the convex portions is increased, for example, the concave portions and the convex portions are alternately provided with each size, an effect that finer foreign matters can be detected can be obtained.

さらに上記実施例１においては、１つの基準ローラに複数の可動ローラを対向させた場合を例に説明したが、基準ローラを複数設けるようにしてもよく、この場合基準ローラに可動ローラと同形様の凹部と凸部とを設けて隣接する基準ローラ同士の凹部と凸部を嵌め合わせるようにして、紙幣に付着した異物が基準ローラ間を通過するときでも、基準ローラが異物に確実に接触するようにすれば上記と同様の効果を得ることができる。   Further, in the first embodiment, the case where a plurality of movable rollers are opposed to one reference roller has been described as an example. However, a plurality of reference rollers may be provided. In this case, the reference roller has the same shape as the movable roller. The concave and convex portions of the reference roller are provided so that the concave and convex portions of the adjacent reference rollers are fitted to each other, so that even when the foreign matter attached to the bill passes between the reference rollers, the reference roller reliably contacts the foreign matter. By doing so, the same effect as described above can be obtained.

また、隣接する可動ローラ同士がオーバーラップする形状となればよいので、図１１に示すように凹部と凸部の形状を波状となるように形成しても上記と同様の効果を得ることができる。   Further, since it is sufficient that the adjacent movable rollers overlap each other, the same effect as described above can be obtained even if the concave and convex portions are formed in a wave shape as shown in FIG. .

実施例１の媒体厚み検知装置を示す説明図Explanatory drawing which shows the medium thickness detection apparatus of Example 1. FIG. 実施例１の媒体厚み検知装置を示す側面図FIG. 3 is a side view showing the medium thickness detection device according to the first embodiment. 可動ローラを示す斜視図Perspective view showing movable roller 媒体厚み検知装置を示すブロック図Block diagram showing the media thickness detector 正常な状態の紙幣が通過するまでの可動ローラの変位を示す出力波形図Output waveform diagram showing displacement of movable roller until banknote in normal state passes 異物が付着した紙幣が通過するまでの可動ローラの変位を示す出力波形図Output waveform diagram showing the displacement of the movable roller until the banknote with foreign matter passes through 可動ローラ間に異物があるときのギャップセンサが異物検知領域を示す説明図Explanatory drawing in which the gap sensor indicates the foreign object detection area when there is a foreign object between the movable rollers 可動ローラ間に異物がある場合の出力波形図Output waveform diagram when there is foreign matter between movable rollers 従来のローラと可動ローラとの寸法比較図Comparison of dimensions between conventional roller and movable roller 異物に片乗りした状態での変位を比較した説明図Explanatory drawing comparing displacement in a state where it sits on a foreign object 可動ローラの別形状の例を示す説明図Explanatory drawing showing an example of another shape of the movable roller

符号の説明Explanation of symbols

１ 媒体厚み検知装置
２ 基準ローラ
３ ベアリング
４ 可動ローラ
５ シャフト
６ 弾性体
１０ ギャップセンサ
１５ 制御部
１６ 記憶部 DESCRIPTION OF SYMBOLS 1 Medium thickness detection apparatus 2 Reference | standard roller 3 Bearing 4 Movable roller 5 Shaft 6 Elastic body 10 Gap sensor 15 Control part 16 Memory | storage part

Claims (2)

基準ローラと、該基準ローラとの間に紙幣を挟持して搬送するために前記基準ローラと平行に並べて配置された変位可能な可動ローラと、前記両ローラが紙幣を挟持したときの前記可動ローラの変位を検知する検知手段とを有する媒体厚み検知装置であって、
前記各可動ローラの両端部を切り欠いて周面方向に凹部と凸部を交互に形成し、
隣接する可動ローラ同士の凹部と前記凸部とを嵌め合わせて並べたことを特徴とする媒体厚み検知装置。 A reference roller, a displaceable movable roller arranged in parallel with the reference roller to sandwich and convey the bill between the reference roller, and the movable roller when the two rollers sandwich the bill A medium thickness detection device having detection means for detecting the displacement of
By forming notches at both ends of each movable roller and alternately forming recesses and protrusions in the circumferential direction,
A medium thickness detection device, wherein concave portions between adjacent movable rollers and the convex portions are fitted and arranged. 請求項１に記載の媒体厚み検知装置において、
前記基準ローラを少なくとも１つとして、１つの基準ローラに複数の前記可動ローラを対向させて並べたことを特徴とする媒体厚み検知装置。 The medium thickness detection apparatus according to claim 1,
An apparatus for detecting a thickness of a medium, characterized in that at least one reference roller is provided and a plurality of movable rollers are arranged opposite each other on one reference roller.
JP2007253206A 2007-09-28 2007-09-28 Medium thickness detector Expired - Fee Related JP4924334B2 (en)

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