JPH0525198Y2 - - Google Patents

Description

【考案の詳細な説明】 (イ) 考案の分野 この考案は、例えば銀行業務に用いる自動取引
機、あるいはICカード等のカードリーダライタ
のように紙葉類（紙幣）やカードの如き媒体を機
内に取込んで搬送するものにおいて、この媒体の
帯電静電気を除去する装置に関する。[Detailed explanation of the invention] (a) Field of the invention This invention is for automatic teller machines used in banking business, or card readers/writers for IC cards, etc., which allow media such as paper sheets (banknotes) and cards to be transferred in-flight. This invention relates to a device for removing static electricity from a medium that is taken in and transported by a medium.

(ロ) 考案の背景 上述の紙幣やカードを搬送媒体として取扱うも
のは、この搬送媒体の帯電静電気を除去するた
め、従来は除電ブラシと呼ばれる導電性の糸状の
ものを多数並べ、これと帯電した搬送媒体との間
にコロナ放電を起こすことが行われている。(b) Background of the invention In order to remove static electricity from the above-mentioned paper money and cards as conveyance media, conventionally, a large number of conductive thread-like objects called static elimination brushes are lined up and used to remove static electricity from the conveyance medium. A corona discharge is generated between the carrier medium and the carrier medium.

しかしながら、かかる除電方法にあつては、除
電ブラシが搬送媒体と接する時に、逆に搬送媒体
に電荷を与えてしまつたり、またカーボン繊維を
除電ブラシに使つたものでは、これが折れて落下
し、回路基板をシヨートさせることがあり、さら
に、コロナ放電時にノイズが発生し、LSIの誤動
作を誘発する問題があつた。 However, in such a static elimination method, when the static elimination brush comes into contact with the conveyed medium, it may give an electric charge to the conveyed medium, and if carbon fiber is used for the static elimination brush, it may break and fall. There was a problem in that the circuit board could be shot, and noise was generated during corona discharge, causing LSI malfunctions.

また、搬送部が金属等の導電体で構成された場
合でも、例えばローラシヤフトを保持するベアリ
ングの内輪、外輪、および鋼球が、その回転停止
時は接触導通していても、高速回転時はグリスの
油圧により浮き上がつてしまい、絶縁状態となる
ため、除電効果を期待し難く、また使用時間が進
むに従つて停止時の導電状態も劣化してしまう難
点があつた。 Furthermore, even if the conveying section is made of a conductive material such as metal, for example, even if the inner ring, outer ring, and steel balls of the bearing that holds the roller shaft are electrically conductive when the rotation is stopped, when the roller shaft is rotated at high speed, Since the oil pressure of the grease causes it to float and become insulated, it is difficult to expect a static neutralizing effect, and as the usage time progresses, the electrical conductivity when stopped deteriorates.

(ハ) 考案の目的 この考案は、上述の問題点に鑑み、ベアリング
の導電性を確実に維持することにより、耐久性の
良い、ノイズ発生のない、しかも従来機構を大幅
に変更する必要のない除電装置の提供を目的とす
る。(c) Purpose of the invention In view of the above-mentioned problems, this invention provides good durability, no noise generation, and does not require major changes to the conventional mechanism by reliably maintaining the conductivity of the bearing. The purpose is to provide a static eliminator.

(ニ) 考案の構成 この考案は、ベアリングの内輪と外輪との間に
弾性を有する導電部材を嵌入させ、該導電部材は
線状部材の両端部を内側へ折り返した環状体に形
成されており、該環状をなす部分が前記外輪の内
周に沿つて接触するとともに、前記折り返された
両端部は、各々前記折り返し位置とその先端との
間で前記内輪の外周に弾性的に接当して、内輪と
外輪とを電気的に導通させるよう配備されている
ことを特徴とする。(d) Structure of the device In this device, an elastic conductive member is fitted between the inner ring and the outer ring of the bearing, and the conductive member is formed into an annular body by folding both ends of a linear member inward. , the annular portion contacts along the inner periphery of the outer ring, and each of the folded ends elastically contacts the outer periphery of the inner ring between the folded position and the tip thereof. , characterized in that the inner ring and the outer ring are arranged to electrically conduct with each other.

(ホ) 考案の効果 この考案によれば、搬送系のローラ等を導電材
料を用いて製作すると同時に、ローラの回転軸を
軸受するためのベアリングの内輪と外輪とをベア
リング内部において導電部材で導通させることに
より、搬送媒体と導通しているベアリング内輪
と、フレームグランドとなつている金属製のシヤ
ーシとの間のインピーダンスを低くして、搬送媒
体に帯電した静電気を金属製シヤーシへ逃がすこ
とができるので、コロナ放電を利用するもののよ
うな前記シヨートやノイズ発生等の問題を生じな
い。(e) Effects of the invention According to this invention, the rollers of the conveyance system are manufactured using a conductive material, and at the same time, the inner ring and the outer ring of the bearing for bearing the rotating shaft of the roller are electrically connected inside the bearing using a conductive member. By doing so, it is possible to lower the impedance between the bearing inner ring, which is electrically connected to the conveyed medium, and the metal chassis, which serves as the frame ground, and to release static electricity charged in the conveyed medium to the metal chassis. Therefore, problems such as shot and noise generation as described above, unlike those using corona discharge, do not occur.

また、従来のベアリングやローラを導電性のも
のに置き換えれば良く、既存の装置の形状変更等
を伴わないので、既存の装置への適用が簡単であ
り、コストアツプを最小限にできるとともに、従
来と同等の耐久性が期待できる。 In addition, conventional bearings and rollers can be replaced with conductive ones, and there is no need to change the shape of existing equipment, so it is easy to apply to existing equipment, minimizing cost increases, and You can expect the same durability.

さらに、ベアリングの内・外輪間に嵌入されて
いる導電部材は外輪の内周面に沿つて接触してい
るから、接触面積が大きくとれて該ベアリングの
高速回転時も高い導電性を保つことができ、長期
にわたつて良好かつ安定的な除電効果を期待でき
る。 Furthermore, since the conductive member fitted between the inner and outer rings of the bearing is in contact along the inner peripheral surface of the outer ring, the contact area is large and high conductivity can be maintained even when the bearing rotates at high speed. Therefore, a good and stable static elimination effect can be expected over a long period of time.

しかも、導電部材をベアリングの内・外輪間の
スペースを利用して収納したので、ベアリングの
形状が大型化することがなく、またベアリング外
部に導電部材を設けるための余分な空間も必要と
しないので、装置全体が大型化することもない。 Moreover, since the conductive member is housed in the space between the inner and outer rings of the bearing, the shape of the bearing does not become too large, and no extra space is required to provide the conductive member outside the bearing. , the overall size of the device does not increase.

また導電部材のベアリングへの取付は、内・外
輪間の間隙に嵌入するだけでよく、組立工程数が
少なくて済む。 Furthermore, the conductive member can be attached to the bearing simply by fitting it into the gap between the inner and outer rings, reducing the number of assembly steps.

さらに導電部材はベアリング内・外輪間の間隙
に、導電部材自身のバネ力により保持され、ベア
リング内・外輪のいずれにも固定されないので、
長期の使用によつても固定部の破損が発生せず、
長期にわたつて良好かつ安定的な導電性を保つこ
とができる。 Furthermore, the conductive member is held in the gap between the inner and outer rings of the bearing by its own spring force, and is not fixed to either the inner or outer ring of the bearing.
The fixed part will not be damaged even after long-term use.
Good and stable conductivity can be maintained over a long period of time.

(ヘ) 考案の実施例 以下、この考案の一実施例を図面によつて説明
する。(f) Embodiment of the invention An embodiment of the invention will be described below with reference to drawings.

第３図は第１図および第２図に示す導電ベアリ
ング１を用いた紙葉類Ａの搬送部構造を示し、左
右のシヤーシ２，２間に上下２本のシヤフト３が
平行に架設されて、それぞれのシヤフト３の端部
が上記導電ベアリング１によりシヤーシ２に回転
自由に受支される。また、シヤフト３はＥリング
４にて抜止めされる。 FIG. 3 shows the structure of a transport section for paper sheets A using the conductive bearing 1 shown in FIGS. 1 and 2, in which two upper and lower shafts 3 are installed in parallel between the left and right chassis 2. , the end of each shaft 3 is rotatably supported by the chassis 2 by the conductive bearing 1. Further, the shaft 3 is prevented from coming off by an E ring 4.

上下のシヤフト３の左右一対のゴムローラ５，
５が固装され、上下のゴムローラ同士が図示のよ
うに接触される。 A pair of left and right rubber rollers 5 on the upper and lower shafts 3,
5 is fixed, and the upper and lower rubber rollers are brought into contact with each other as shown.

そして、上記したシヤーシ２、シヤフト３、ゴ
ムローラ５のそれぞれが導電材料から製作される
と共に、第１図および第２図のように導電ベアリ
ング１にあつてはこれを構成する内輪６、外輪
７、鋼球８、保持器９の他に、金属線１０により
内輪６と外輪７とが直接電気的に導通される。 Each of the above-mentioned chassis 2, shaft 3, and rubber roller 5 is manufactured from a conductive material, and as shown in FIGS. 1 and 2, in the case of the conductive bearing 1, the inner ring 6, outer ring 7, In addition to the steel balls 8 and the cage 9, the inner ring 6 and the outer ring 7 are directly electrically connected by a metal wire 10.

この金属線１０は第２図から明らかなように、
両端部１０ａを内側へ折り返した環状体に形成さ
れており、該環状をなす部分が前記外輪７の内周
に沿つて接触するとともに、該折り返された両端
部１０ａは、各々該折り返し位置とその先端との
間でスリンガ１１を介し内輪６に接することで内
外方向のバネ力を有せしめられ、このバネ力で
内・外輪６，７に常時弾性的に接当して、上記導
電状態を保つ。１２はシールドである。 As is clear from FIG. 2, this metal wire 10 is
It is formed into an annular body with both end portions 10a folded back inward, and the annular portion contacts along the inner circumference of the outer ring 7, and the folded both end portions 10a are located at the folded back position and the inner circumference of the outer ring 7. By contacting the inner ring 6 through the slinger 11 between the tip and the tip, a spring force is applied in the outward and outward directions, and this spring force constantly elastically contacts the inner and outer rings 6 and 7 to maintain the above-mentioned conductive state. . 12 is a shield.

かく構成すれば、第３図のように上下のゴムロ
ーラ５，５間に紙葉類（またはカードＡ）を挟ん
で搬送すると、該紙葉類Ａに帯電した静電気はゴ
ムローラ５→シヤフト３→内輪６→金属線１０→
外輪７→シヤーシ２に流れて除去されるのであ
り、ベアリング１においては内輪６と外輪７とが
金属線１０で常に電気的に導通されており、該金
属線１０は外輪７の内周面に沿つて接触している
と同時にスリンガ１１を介して内輪６に弾性的に
接当しているから、ベアリング高速回転時のグリ
スの油圧が作用するも導通状態が長期にわたつて
良好かつ確実に維持されるに至る。 With this structure, when paper sheets (or cards A) are conveyed while being sandwiched between the upper and lower rubber rollers 5, 5 as shown in FIG. 3, the static electricity charged on the paper sheets A is transferred from the rubber roller 5 to the shaft 3 to the inner ring. 6→Metal wire 10→
It flows from the outer ring 7 to the chassis 2 and is removed. In the bearing 1, the inner ring 6 and the outer ring 7 are always electrically connected by a metal wire 10, and the metal wire 10 is connected to the inner peripheral surface of the outer ring 7. At the same time, it is in elastic contact with the inner ring 6 via the slinger 11, so even though the oil pressure of the grease is applied when the bearing rotates at high speed, the conduction state is maintained well and reliably over a long period of time. It comes to be done.

この考案の構成における導電部材は、上述の実
施例における金属線１０に対応する。 The conductive member in the configuration of this invention corresponds to the metal wire 10 in the above-described embodiment.

尚、金属線１０の導電グリス、導電ゴムシール
の使用に代えることができる。 Note that it is possible to replace the metal wire 10 with conductive grease or conductive rubber seal.

【図面の簡単な説明】[Brief explanation of the drawing]

図面はこの考案にかかる除電装置の一実施例を
示し、第１図は導電ベアリングの縦断面図、第２
図は第１図のＡ−Ａ線矢視拡大図、第３図は第１
図の導電ベアリングを使つた搬送部の断面図であ
る。 １……導電ベアリング、６……内輪、７……外
輪、１０……金属線。 The drawings show one embodiment of the static eliminator according to this invention, and FIG. 1 is a longitudinal cross-sectional view of a conductive bearing, and FIG.
The figure is an enlarged view taken along the line A-A in Figure 1, and Figure 3 is an enlarged view of Figure 1.
FIG. 3 is a cross-sectional view of a conveyance unit using the conductive bearing shown in the figure. 1... Conductive bearing, 6... Inner ring, 7... Outer ring, 10... Metal wire.

Claims (1)

【実用新案登録請求の範囲】 カードや紙葉類からなる搬送媒体を搬送する搬
送系において、該搬送系は前記搬送媒体を搬送す
るローラと、該ローラを固定した回転軸と、該回
転軸をベアリングを介して支持するシヤーシとを
備え、前記ローラ、回転軸、ベアリング、及びシ
ヤーシは導電材料からなり、 前記ベアリングは内輪と外輪との間に複数の鋼
球が挟持された構造であつて、弾性を有する導電
部材が前記内輪と外輪との間に嵌入され、 該導電部材は線状部材の両端部を内側へ折り返
した環状体に形成されており、該環状をなす部分
が前記外輪の内周に沿つて接触するとともに、該
折り返された両端部は、各々該折り返し位置とそ
の先端との間で前記内輪の外周に弾性的に接当し
て、内輪と外輪とを電気的に導通させるよう配備
されていることを特徴とする、搬送系における除
電装置。[Claims for Utility Model Registration] In a conveyance system that conveys a conveyance medium such as cards or paper sheets, the conveyance system includes a roller that conveys the conveyance medium, a rotating shaft to which the roller is fixed, and a rotating shaft that is connected to the rotating shaft. and a chassis supported through bearings, the roller, rotating shaft, bearing, and chassis are made of a conductive material, and the bearing has a structure in which a plurality of steel balls are sandwiched between an inner ring and an outer ring, An elastic conductive member is fitted between the inner ring and the outer ring, and the conductive member is formed into an annular body by folding both ends of a linear member inward, and the annular portion is inserted into the inner ring of the outer ring. In addition to contacting along the circumference, both folded ends elastically contact the outer circumference of the inner ring between the folded position and the tip thereof, thereby electrically conducting the inner ring and the outer ring. A static eliminator in a conveyance system, characterized in that it is arranged as follows.