JP2008282469A

JP2008282469A - Magnetic head mechanism

Info

Publication number: JP2008282469A
Application number: JP2007125172A
Authority: JP
Inventors: Yukiteru Okuda; 幸輝奥田
Original assignee: NEC Tokin Corp
Current assignee: Tokin Corp
Priority date: 2007-05-10
Filing date: 2007-05-10
Publication date: 2008-11-20

Abstract

<P>PROBLEM TO BE SOLVED: To always keep pressure-contact force between a magnetic head part and a magnetic card at a fixed necessary minimum value even when the tip of the magnetic head part is abraded or a thickness of the magnetic card varies. <P>SOLUTION: The magnetic head mechanism for applying the dead weight of a weight 95 on the magnetic head part 60 equally at the two points of front and rear in a magnetic card conveying direction through a wire spring 90 extending in the magnetic card conveying direction is provided with a holding member 80 for holding the magnetic head part 60 from the side and penetrating the wire spring 90 through two upper points, support members 72 positioned in the front and rear in the magnetic card conveying direction of the magnetic head part 60 held by the holding member 80 to limit the downward or horizontal displacement of the wire spring 90, and a frame 50 having a card traveling groove part and the support member 72 integrated therewith. The side face of the support member 72 comes into contact with the inner surface of the weight 95 to limit the motion of the weight 95 only in its dead weight direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、磁気カードに対して情報を磁気的に記録及び再生の少なくとも一方を行う磁気ヘッド機構に関するものであり、手動によりまたは機械的に駆動されて走行する磁気カードの記録再生面に対して磁気ヘッド部を所定の状態に支持するための磁気ヘッド機構に関する。 The present invention relates to a magnetic head mechanism that magnetically records and reproduces information with respect to a magnetic card, and to a recording / reproducing surface of a magnetic card that is driven manually or mechanically. The present invention relates to a magnetic head mechanism for supporting a magnetic head portion in a predetermined state.

従来の磁気ヘッド機構を図５に示す。図５（ａ）はその平面図、図５（ｂ）はＣ−Ｃ断面図である。尚、図５（ｂ）において、磁気ヘッド部６０は断面であるが、その断面形状は複雑であり、図示の繁雑さを避けるために斜線を付していない。図５において、この磁気ヘッド機構は、端子６１を持つ磁気ヘッド部６０と、走行する磁気カード１００の近傍に配置される固定部としての支持部材７１及び７２と、磁気ヘッド部６０を保持するヘッドブロック部としての保持部材８０と、両側の支持部材７１と保持部材８０との間に設けられ磁気ヘッド部６０を磁気カード１００の記録再生面１０１へ向けて付勢するバネ部としてのワイヤバネ９０とを有している。尚、フレーム５０のカード走行溝部５１は、操作上の理由等により、磁気カード１００の厚さに対して余裕を持ったった溝幅に形成されるのが普通である。よって実際に磁気カード装置で磁気カード１００を使用する際には、磁気カード１００がフレーム５０のカード走行溝部５１内にて傾斜したまま走行したり、揺動しながら走行する場合がある。磁気ヘッド機構には、このような場合でも正確な情報記録再生を実現できるように、磁気ヘッド部６０の磁気カード１００に対する追従性が要求される。すなわち、磁気ヘッド機構には、磁気カード１００がいかなる走行姿勢であっても、磁気ヘッド部６０のギャップ部分が磁気カード１００の記録再生面１０１に対して常に所定の位置関係を確保できることが要求される。 A conventional magnetic head mechanism is shown in FIG. FIG. 5A is a plan view, and FIG. 5B is a cross-sectional view taken along the line CC. In FIG. 5B, the magnetic head portion 60 has a cross section, but the cross sectional shape is complicated and is not hatched to avoid complication of illustration. In FIG. 5, this magnetic head mechanism includes a magnetic head portion 60 having terminals 61, support members 71 and 72 as fixing portions disposed in the vicinity of the traveling magnetic card 100, and a head that holds the magnetic head portion 60. A holding member 80 as a block part, and a wire spring 90 as a spring part provided between the supporting members 71 and the holding members 80 on both sides and biasing the magnetic head part 60 toward the recording / reproducing surface 101 of the magnetic card 100; have. Note that the card running groove 51 of the frame 50 is usually formed with a groove width having a margin with respect to the thickness of the magnetic card 100 for reasons of operation. Therefore, when the magnetic card 100 is actually used in the magnetic card device, the magnetic card 100 may travel while tilting or swinging within the card travel groove portion 51 of the frame 50. The magnetic head mechanism is required to follow the magnetic head unit 60 with respect to the magnetic card 100 so that accurate information recording / reproduction can be realized even in such a case. That is, the magnetic head mechanism is required to always ensure a predetermined positional relationship between the gap portion of the magnetic head unit 60 and the recording / reproducing surface 101 of the magnetic card 100 regardless of the traveling posture of the magnetic card 100. The

このようにワイヤバネを用いて磁気ヘッド部を磁気カードの記録再生面へ向けて付勢する機構以外に、たとえば特許文献１のように、ねじりコイルバネを用いて磁気ヘッドを磁気カードの記録再生面に密着させる例などもある。 In addition to the mechanism for urging the magnetic head portion toward the recording / reproducing surface of the magnetic card using the wire spring as described above, the magnetic head is applied to the recording / reproducing surface of the magnetic card using a torsion coil spring as in, for example, Patent Document 1. There are also examples of close contact.

特開平５−７３８６１号公報Japanese Patent Laid-Open No. 5-73861

従来の磁気ヘッド機構では、図５のように、ワイヤバネ９０による磁気ヘッド部６０と磁気カード１００の圧接力は、磁気カード１００を挿入したときの磁気ヘッド部６０の変位量によって決まっていた。また、その変位量は、図２に断面図で示すように、磁気カード１００の厚さｔ_２と、磁気ヘッド部６０先端からフレーム５０のカード走行溝部５１の対向面への距離ｔ_１との差である。 In the conventional magnetic head mechanism, as shown in FIG. 5, the pressure contact force between the magnetic head unit 60 and the magnetic card 100 by the wire spring 90 is determined by the amount of displacement of the magnetic head unit 60 when the magnetic card 100 is inserted. Further, as shown in a cross-sectional view in FIG. 2, the amount of displacement is the thickness t ₂ of the magnetic card 100 and the distance t ₁ from the tip of the magnetic head 60 to the opposing surface of the card running groove 51 of the frame 50. It is a difference.

ところで、磁気ヘッド部６０先端とフレーム５０のカード走行溝部５１の対向面の距離ｔ_１は、磁気ヘッド部６０先端の経時的な磨耗により変化する。また磁気カード１００の厚さｔ_２も使用の範囲の中で変わる。そのため、従来は磁気ヘッド部６０先端の許容磨耗量、及び使用する磁気カード１００の最小厚さに合わせて圧接力を決めていた。 By the way, the distance t ₁ between the front end of the magnetic head unit 60 and the facing surface of the card running groove 51 of the frame 50 changes due to wear over time of the front end of the magnetic head unit 60. The thickness t ₂ of the magnetic card 100 also changes in the scope of use. Therefore, conventionally, the pressure contact force is determined in accordance with the allowable wear amount at the tip of the magnetic head unit 60 and the minimum thickness of the magnetic card 100 to be used.

しかし、磁気ヘッド部６０先端の磨耗が無い使用開始の初期や、厚さ大の磁気カード１００を使用するときは圧接力が過多となり、磁気ヘッド部６０先端の磨耗を促進させたり、磁気カード１００の搬送負荷を大きくするという欠点があった。 However, at the beginning of use when the tip of the magnetic head unit 60 is not worn or when the magnetic card 100 having a large thickness is used, the pressure contact force becomes excessive, and the wear of the tip of the magnetic head unit 60 is promoted. There was a drawback of increasing the transport load of the.

よって本発明は、磁気ヘッド部先端の磨耗の発生や、磁気カードの厚さに使用の範囲があっても、磁気ヘッド部と磁気カードの圧接力を常に必要最小限の一定値にすることを目的とする。 Therefore, according to the present invention, the pressure contact force between the magnetic head unit and the magnetic card is always set to the minimum necessary constant value regardless of the occurrence of wear at the tip of the magnetic head unit or the range of use of the thickness of the magnetic card. Objective.

上記課題を解決するために、本発明では、錘の自重により、磁気ヘッド部と磁気カードを圧接させ、その圧接力を、読み取り・書き込みの必要最小限の値となるようにした。 In order to solve the above-described problems, in the present invention, the magnetic head and the magnetic card are brought into pressure contact by the weight of the weight, and the pressure contact force is set to the minimum necessary value for reading and writing.

その作用を説明すると、磁気ヘッド部先端の経時的な磨耗や、磁気カードの厚さの使用の範囲によって磁気カードを挿入したときの磁気ヘッド部の変位量に幅があっても、錘の自重を磁気ヘッド部に加えることで、磁気ヘッド部と磁気カードの圧接力は常に読み取り・書き込みの必要最小限の一定値とすることができる。 Explaining the effect, even if the displacement of the magnetic head portion when the magnetic card is inserted varies depending on the wear of the tip of the magnetic head portion over time or the thickness range of the magnetic card, By adding to the magnetic head unit, the pressure contact force between the magnetic head unit and the magnetic card can always be a constant value that is the minimum necessary for reading and writing.

すなわち、本発明の磁気ヘッド機構は、水平方向かつ磁気カード搬送方向に延在する線状のワイヤバネを介して錘の自重を磁気カード搬送方向の前後２点で均等に磁気ヘッド部に加える磁気ヘッド機構であって、前記磁気ヘッド部を側方から保持すると共に上部の２点にて前記ワイヤバネを貫通させる保持部材と、前記保持部材で保持された磁気ヘッド部の磁気カード搬送方向の前後に位置し前記ワイヤバネの下方向及び水平方向への変位を制限する支持部材と、カード走行溝部を有すると共に前記支持部材が一体化されたフレームとを備えることを特徴とする。 That is, the magnetic head mechanism of the present invention is a magnetic head in which the weight of the weight is evenly applied to the magnetic head portion at two points in the front and rear in the magnetic card conveying direction via linear wire springs extending in the horizontal direction and in the magnetic card conveying direction. A mechanism for holding the magnetic head portion from the side and penetrating the wire spring at two upper points; and a position of the magnetic head portion held by the holding member before and after in the magnetic card conveyance direction And a support member that restricts the downward and horizontal displacement of the wire spring, and a frame that has a card running groove and is integrated with the support member.

また前記支持部材の側面は前記錘の内面に接し、前記錘の動きをその自重方向のみに制限するとよい。 The side surface of the support member may be in contact with the inner surface of the weight, and the movement of the weight may be limited only in its own weight direction.

本発明によれば、磁気ヘッド部先端の経時的な磨耗や、磁気カードの厚さの使用の範囲によって、磁気カードを挿入したときの磁気ヘッド部の変位量に幅があっても、磁気ヘッド部と磁気カードの圧接力は常に必要最小限の値とすることが出来るので、磁気ヘッド部先端の磨耗を抑制でき、カードの搬送負荷を必要最小限に抑えることが出来る。 According to the present invention, even if the displacement amount of the magnetic head portion when the magnetic card is inserted varies depending on the wear of the tip of the magnetic head portion with time or the use range of the thickness of the magnetic card, the magnetic head Since the pressure contact force between the magnetic card and the magnetic card can always be set to the minimum necessary value, wear at the tip of the magnetic head can be suppressed, and the card transport load can be minimized.

本発明の一実施の形態での磁気ヘッド機構を図１に示す。図１（ａ）はその平面図、図１（ｂ）はＡ−Ａ断面図、図１（ｃ）は側面図である。尚、図１（ｂ）において、磁気ヘッド部６０の部分は断面であるが、図示の繁雑さを避けるために斜線を付していない。 A magnetic head mechanism according to an embodiment of the present invention is shown in FIG. FIG. 1A is a plan view thereof, FIG. 1B is a cross-sectional view taken along line AA, and FIG. 1C is a side view. In FIG. 1B, the magnetic head portion 60 is a cross section, but is not hatched to avoid the complexity of illustration.

この磁気ヘッド機構の特徴は、磁気ヘッド部６０に近い一対の支持部材７２のみ有する新たなフレーム５０を用い、その支持部材７２と、磁気ヘッド部６０の保持部材８０との間を通過し磁気カード搬送方向に延びる線状のワイヤバネ９０を設け、保持部材８０の上部２点でワイヤバネ９０を貫通させ、磁気カード１００の搬送方向の前後２点で均等に磁気ヘッド部６０に圧力が加わるように、錘９５をワイヤバネ９０に載せる。また錘９５は、磁気カード１００を挿入し磁気ヘッド部６０が持ち上がった際の圧接力が読み取り・書き込みの必要最小限の値となるような形状／材質とする。さらに錘９５は、支持部材７２との位置関係から回転姿勢を固定し、自重方向のみ可動とする。 The magnetic head mechanism is characterized in that a new frame 50 having only a pair of support members 72 close to the magnetic head unit 60 is used, and the magnetic card passes between the support member 72 and the holding member 80 of the magnetic head unit 60. A linear wire spring 90 extending in the transport direction is provided, the wire spring 90 is penetrated at two upper points of the holding member 80, and pressure is uniformly applied to the magnetic head unit 60 at two points before and after the magnetic card 100 in the transport direction. The weight 95 is placed on the wire spring 90. The weight 95 is made of a shape / material so that the pressure contact force when the magnetic card 100 is inserted and the magnetic head unit 60 is lifted becomes a minimum value necessary for reading and writing. Furthermore, the weight 95 is fixed in a rotational posture based on the positional relationship with the support member 72, and is movable only in its own weight direction.

その錘、ワイヤバネ及び支持部材の斜視図を図４に示す。図４（ａ）は錘９５とワイヤバネ９０、図４（ｂ）は支持部材７２を示す。このような部材により、錘９５の重量がワイヤバネ９０を介して保持部材８０に保持された磁気ヘッド部６０に加えられる。また、錘９５の内側には支持部材７２が配設されているので、錘９５は自重方向にのみ可動となっている。 FIG. 4 shows a perspective view of the weight, wire spring, and support member. 4A shows the weight 95 and the wire spring 90, and FIG. 4B shows the support member 72. By such a member, the weight of the weight 95 is applied to the magnetic head unit 60 held by the holding member 80 via the wire spring 90. Further, since the support member 72 is disposed inside the weight 95, the weight 95 is movable only in the direction of its own weight.

この構成であれば、磁気カード１００を挿入したときの磁気ヘッド部６０の変位量に幅があっても、錘９５にかかる一定の重力がワイヤバネ９０に加えられるので、磁気ヘッド部６０と磁気カード１００の圧接力は常に読み取り・書き込みの必要最小限の値になるように設定できる。その錘９５には、アルミ、亜鉛などのダイキャストを用い、天面の厚みで重さを調整することにより、圧接力を必要最小限の値にすることができる。 With this configuration, even if the amount of displacement of the magnetic head unit 60 when the magnetic card 100 is inserted has a certain width, constant gravity applied to the weight 95 is applied to the wire spring 90, so the magnetic head unit 60 and the magnetic card The pressure contact force of 100 can be set so as to always have a minimum necessary value for reading and writing. For the weight 95, die-casting such as aluminum or zinc is used, and by adjusting the weight according to the thickness of the top surface, the pressure contact force can be reduced to a necessary minimum value.

さらに補足する。図５の従来技術ではワイヤバネ９０の両端部を設定位置に固定することによって、磁気ヘッド部６０が持ち上げられたときの変位量に応じた圧接力を発生していた。それに対して本発明では、錘によってワイヤバネの両側部分に一定の荷重を加えている。 Further supplements. In the prior art of FIG. 5, by fixing both ends of the wire spring 90 at the set position, a pressing force corresponding to the amount of displacement when the magnetic head unit 60 is lifted is generated. On the other hand, in the present invention, a constant load is applied to both side portions of the wire spring by the weight.

図１のように、磁気カード１００が無い状態では、ワイヤバネ９０が支持部材７２の上部に形成された溝の底に当接することで、磁気ヘッド部６０は下降を制限され、一定の高さに保たれる。次に、磁気カード１００が搬送されてきたときには、ワイヤバネ９０は支持部材７２の溝から浮き上がり、それと同時に錘９５の自重がワイヤバネ９０を介して保持部材８０に加えられ、これに保持された磁気ヘッド部６０が磁気カード１００に圧接される。 As shown in FIG. 1, in the absence of the magnetic card 100, the wire spring 90 abuts against the bottom of the groove formed in the upper portion of the support member 72, so that the magnetic head unit 60 is restricted from descending and has a constant height. Kept. Next, when the magnetic card 100 is conveyed, the wire spring 90 is lifted from the groove of the support member 72, and at the same time, the weight of the weight 95 is applied to the holding member 80 via the wire spring 90, and the magnetic head held thereby. The unit 60 is pressed against the magnetic card 100.

このとき、ワイヤバネ９０は磁気ヘッド部６０の保持部材８０を磁気カード搬送方向の前後２点で加圧することによって、磁気ヘッド部６０の姿勢を安定に保ち、さらに、支持部材７２の側面に錘９５の内面が接する形状にし、錘９５の動きをその自重方向にのみ制限することで、磁気ヘッド部６０の姿勢をさらに安定にする。 At this time, the wire spring 90 pressurizes the holding member 80 of the magnetic head unit 60 at two points before and after in the magnetic card conveying direction, so that the posture of the magnetic head unit 60 is kept stable, and the weight 95 is provided on the side surface of the support member 72. Further, the posture of the magnetic head unit 60 is further stabilized by limiting the movement of the weight 95 only in the direction of its own weight.

図３は本発明の他の実施の形態による磁気ヘッド機構を示し、図３（ａ）はその平面図、図３（ｂ）はＢ−Ｂ断面図、図３（ｃ）は模式的な右側面図である。尚、図３（ｃ）では、簡略化のために、右側のワイヤバネストッパを除去し、隠れ線（破線）は支持部材７２の表面と錘９５の内面を表す線のみとした。 3A and 3B show a magnetic head mechanism according to another embodiment of the present invention. FIG. 3A is a plan view thereof, FIG. 3B is a cross-sectional view along BB, and FIG. 3C is a schematic right side. FIG. In FIG. 3C, for simplification, the right wire spring stopper is removed, and the hidden lines (broken lines) are only lines representing the surface of the support member 72 and the inner surface of the weight 95.

本実施の形態では、錘９５の上側に錘ストッパ９６を設け、錘９５の上方への動きを制限し、またワイヤバネストッパ７３をワイヤバネ９０の両端部にほぼ接するようにフレーム５０上に設け、ワイヤバネ９０の水平方向の動きを制限した。こうすることで、輸送時などに、錘９５またはワイヤバネ９０が外れることを防止する。尚、ワイヤバネストッパ７３はワイヤバネ９０が長手方向へ移動することを防止するためのものであり、ワイヤバネ９０の上下方向の動きには関与しない。 In the present embodiment, a weight stopper 96 is provided on the upper side of the weight 95 to restrict the upward movement of the weight 95, and the wire spring stopper 73 is provided on the frame 50 so as to substantially contact both ends of the wire spring 90. The horizontal movement of the wire spring 90 was restricted. By doing so, the weight 95 or the wire spring 90 is prevented from coming off during transportation or the like. The wire spring stopper 73 is for preventing the wire spring 90 from moving in the longitudinal direction, and is not involved in the vertical movement of the wire spring 90.

以上の結果、磁気ヘッド部６０先端の経時的な磨耗や、磁気カード１００の厚さの使用の範囲によって磁気カード１００を挿入したときの磁気ヘッド部６０の変位量に幅があっても、磁気ヘッド部６０と磁気カード１００の圧接力は常に必要最小限の値とすることが出来るので、磁気ヘッド部６０先端の磨耗を抑制でき、カードの搬送負荷を必要最小限に抑えることが出来る。 As a result of the above, even if the amount of displacement of the magnetic head 60 when the magnetic card 100 is inserted varies depending on the wear of the magnetic head 60 at the tip or the thickness of the magnetic card 100 used, Since the pressing force between the head unit 60 and the magnetic card 100 can always be set to the minimum necessary value, wear at the tip of the magnetic head unit 60 can be suppressed, and the card transport load can be suppressed to the minimum necessary.

本発明の一実施の形態での磁気ヘッド機構を示し、図１（ａ）はその平面図、図１（ｂ）はＡ−Ａ断面図、図１（ｃ）は側面図。1A and 1B show a magnetic head mechanism according to an embodiment of the present invention, in which FIG. 1A is a plan view, FIG. 1B is an AA cross-sectional view, and FIG. 磁気ヘッド部の変位量を示す断面図。Sectional drawing which shows the displacement amount of a magnetic head part. 本発明の他の実施の形態による磁気ヘッド機構を示し、図３（ａ）はその平面図、図３（ｂ）はＢ−Ｂ断面図、図３（ｃ）は模式的な右側面図。3A and 3B show a magnetic head mechanism according to another embodiment of the present invention, in which FIG. 3A is a plan view, FIG. 3B is a cross-sectional view along BB, and FIG. 3C is a schematic right side view. 錘、ワイヤバネ及び支持部材を示し、図４（ａ）は錘とワイヤバネの斜視図、図４（ｂ）は支持部材の斜視図。FIG. 4A is a perspective view of the weight and the wire spring, and FIG. 4B is a perspective view of the support member. 従来の磁気ヘッド機構を示し、図５（ａ）はその平面図、図５（ｂ）はＣ−Ｃ断面図。FIG. 5A shows a conventional magnetic head mechanism, FIG. 5A is a plan view thereof, and FIG.

符号の説明Explanation of symbols

５０フレーム
５１カード走行溝部
６０磁気ヘッド部
６１端子
７１、７２支持部材
７３ワイヤバネストッパ
８０保持部材
９０ワイヤバネ
９５錘
９６錘ストッパ
１００磁気カード
１０１記録再生面 50 Frame 51 Card running groove 60 Magnetic head 61 Terminals 71 and 72 Support member 73 Wire spring stopper 80 Holding member 90 Wire spring
95 Weight 96 Weight stopper 100 Magnetic card 101 Recording / reproducing surface

Claims

水平方向かつ磁気カード搬送方向に延在する線状のワイヤバネを介して錘の自重を磁気カード搬送方向の前後２点で均等に磁気ヘッド部に加える磁気ヘッド機構であって、
前記磁気ヘッド部を側方から保持すると共に上部の２点にて前記ワイヤバネを貫通させる保持部材と、
前記保持部材で保持された磁気ヘッド部の前記磁気カード搬送方向の前後に位置し前記ワイヤバネの下方向及び水平方向への変位を制限する支持部材と、
カード走行溝部を有すると共に前記支持部材が一体化されたフレームとを備えることを特徴とする磁気ヘッド機構。 A magnetic head mechanism that applies the weight of the weight to the magnetic head portion evenly at two points before and after in the magnetic card conveying direction via a linear wire spring extending in the horizontal direction and in the magnetic card conveying direction,
A holding member for holding the magnetic head part from the side and penetrating the wire spring at two upper points;
A support member that is positioned before and after the magnetic card conveyance direction of the magnetic head unit held by the holding member and restricts the downward and horizontal displacement of the wire spring;
A magnetic head mechanism comprising a card running groove and a frame integrated with the support member.

前記支持部材の側面は前記錘の内面に接し、前記錘の動きをその自重方向のみに制限したことを特徴とする請求項１記載の磁気ヘッド機構。 2. The magnetic head mechanism according to claim 1, wherein a side surface of the support member is in contact with an inner surface of the weight, and the movement of the weight is limited only in its own weight direction.