JP2009054304A

JP2009054304A - Anisotropic conductive connector

Info

Publication number: JP2009054304A
Application number: JP2007217066A
Authority: JP
Inventors: Takaaki Namekata; 貴昭行方
Original assignee: Polymatech Co Ltd
Current assignee: Polymatech Co Ltd
Priority date: 2007-08-23
Filing date: 2007-08-23
Publication date: 2009-03-12
Anticipated expiration: 2027-08-23
Also published as: JP5081534B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anisotropic conductive connector that can make an interference source magnetic conductor hardly cause electrical interference even if the connector has such an interference source magnetic conductor that may make an electric apparatus cause the electrical interference. <P>SOLUTION: An envelope layer 14 is formed on a top surface 12a excluding the end surface of an engaging protrusion 15 on a base 12. Even if an interference source magnetic conductor 16 is exposed on the top surface of the base 12, the envelope layer 14 can prevent any contact with a housing 6 or dropout from the base 12 and a short circuit caused by the interference source magnetic conductor 16. As a result, the electrical interference caused by an unexpected short circuit and the like in an electric apparatus can be prevented. Further, the formation of the engaging protrusion 15, simple positioning and fixing to a housing 5 and easy mounting to the apparatus. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、携帯電話機、パーソナル・ハンディホン・システム（ＰＨＳ）、パーソナル・ディジタル・アシスタント（ＰＤＡ）、ノートパソコン等の情報機器や、デジタルカメラ、小型オーディオプレーヤー等のＡＶ機器など電子機器の内部に組み込まれ、回路基板間、回路基板と電子部品との間、又は機器の外装部品に設けられる導電部と回路基板との間などの種々の部材や電子部品の電極間の電気的接続に用いられる異方導電性コネクタに関する。 The present invention can be used in electronic devices such as mobile phones, personal handyphone systems (PHS), personal digital assistants (PDAs), notebook computers and other information devices, and digital cameras, small audio players and other AV devices. Built-in and used for electrical connection between various members such as between circuit boards, between circuit boards and electronic components, or between conductive parts provided on exterior parts of equipment and circuit boards, and between electrodes of electronic components The present invention relates to an anisotropic conductive connector.

対向する回路基板間や回路基板と電子部品の間などに挟持固定され、回路基板の電極間や回路基板と電子部品との電極間などを電気的に接続する異方導電性コネクタが知られている。その一従来例としての異方導電性コネクタ１は、図１０で示すように、絶縁性のゴム状弾性体でなる弾性シート２の厚み方向に導電媒体として粒子状の磁性導電体３を配向して導通部４を形成してあり、弾性シート２の厚み方向に導電性を示すが、弾性シート２の平面方向には導電性を示さないという異方性を有している（特許文献１）。 Anisotropic conductive connectors are known that are clamped and fixed between opposing circuit boards or between circuit boards and electronic components and electrically connect circuit board electrodes or between circuit board and electronic components. Yes. As shown in FIG. 10, an anisotropic conductive connector 1 as one conventional example has a particulate magnetic conductor 3 oriented as a conductive medium in the thickness direction of an elastic sheet 2 made of an insulating rubber-like elastic body. The conductive portion 4 is formed, and exhibits conductivity in the thickness direction of the elastic sheet 2, but has anisotropy that does not exhibit conductivity in the plane direction of the elastic sheet 2 (Patent Document 1). .

このような異方導電性コネクタ１では、導通部４が数珠繋ぎに配向する磁性導電体３によって形成されているため、導電媒体の導電粒子をゴム内に均一分散して形成した他の異方導電性コネクタの導通部に比べて、導電媒体の充填量が少ないにもかかわらず導通部４の導電率を高くすることができる。このため、挟持固定時の圧縮荷重を小さくしつつ低抵抗を実現する異方導電性コネクタ１を得ることができる。
特開２００５−２７６６９６号公報 In such an anisotropic conductive connector 1, since the conducting portions 4 are formed by the magnetic conductor 3 oriented in a daisy chain, another anisotropic conductive material formed by uniformly dispersing conductive particles of a conductive medium in rubber. Compared with the conductive portion of the conductive connector, the conductivity of the conductive portion 4 can be increased despite the small filling amount of the conductive medium. For this reason, the anisotropically conductive connector 1 which implement | achieves low resistance, making small the compressive load at the time of pinching fixation can be obtained.
JP 2005-276696 A

ところでこの異方導電性コネクタ１は、磁性導電体３を分散した液状ゴムを金型のキャビティー内に注入し、このキャビティー内に磁力を印加して分散している磁性導電体３を集め、導通部４として磁性導電体３を配向させた後に液状ゴムを硬化して製造している。このように簡単な工程によって低コストで異方導電性コネクタ１を得ることができるが、キャビティー内で磁力を受けずに導通部４として配向せずに遊離する未配向磁性導電体３ａが生ずることがある（図１０）。するとこの未配向磁性導電体３ａは弾性シート２のシート面付近に残って露出し、導通部４と接触する回路とは異なる他の回路や端子と接触したり、弾性シート２から脱落したりして、短絡を起こす虞がある。 By the way, the anisotropic conductive connector 1 collects the magnetic conductors 3 dispersed by injecting liquid rubber in which the magnetic conductors 3 are dispersed into the cavity of the mold and applying a magnetic force in the cavities. The liquid rubber is cured after orienting the magnetic conductor 3 as the conducting portion 4. In this way, the anisotropic conductive connector 1 can be obtained at a low cost by a simple process, but the unoriented magnetic conductor 3a that does not receive the magnetic force in the cavity and is not oriented without being oriented is generated. (FIG. 10). Then, the unoriented magnetic conductor 3a remains exposed in the vicinity of the sheet surface of the elastic sheet 2, and contacts with other circuits and terminals different from the circuit in contact with the conductive portion 4, or falls off the elastic sheet 2. May cause a short circuit.

また、導通部４から枝分かれして繋がる分岐磁性導電体３ｂが弾性シート面に露出することがある。するとこの分岐磁性導電体３ｂによって導通部４が接触する回路とは異なる他の回路や端子と接触して、短絡を起こす虞がある。さらに僅かな磁力を受けた不正配向磁性導電体３ｃが導通部４とは異なる部分で弾性シート２の厚み方向に配向し、対向する回路基板間などで短絡を起こす虞がある。 Further, the branched magnetic conductor 3b branched from the conducting portion 4 and connected may be exposed on the elastic sheet surface. Then, the branched magnetic conductor 3b may come into contact with another circuit or terminal different from the circuit with which the conducting portion 4 contacts, causing a short circuit. Further, the misoriented magnetic conductor 3c that receives a slight magnetic force is oriented in the thickness direction of the elastic sheet 2 at a portion different from the conducting portion 4, and there is a possibility of causing a short circuit between the opposing circuit boards.

本発明は、こうした上記課題を解決するためになされたものであり、未配向磁性導電体、分岐磁性導電体、不正配向磁性導電体のように電子機器に電気的障害を発生させるおそれのある障害源磁性導電体を有していてもこれら障害源磁性導電体による電気的障害を起し難い異方導電性コネクタを提供することを目的としている。 The present invention has been made in order to solve the above-described problems, and is a failure that may cause an electrical failure in an electronic device, such as an unoriented magnetic conductor, a branched magnetic conductor, and an improperly oriented magnetic conductor. It is an object of the present invention to provide an anisotropic conductive connector that is unlikely to cause an electrical failure due to the failure source magnetic conductor even if it has a source magnetic conductor.

そこで、本発明は、絶縁性のゴム状弾性体でなるベース部と、該ベース部の厚み方向に貫通するように数珠繋ぎに配向する磁性導電体でなる導通部と、を備えており、導通部の一端と他端がそれぞれ接続対象部材と接触することで相互に導通接続する異方導電性コネクタについて、ベース部に、導通部の一端が露出する導電電極面を有し、導通部が接続する接続対象部材に設けた取付凹部と凹凸係合する係合突起と、導通部として配向されずにベース部の外面に残存し露出する障害源磁性導電体を被覆する外皮層と、を備えることを特徴とする異方導電性コネクタを提供する。 Therefore, the present invention includes a base portion made of an insulating rubber-like elastic body, and a conduction portion made of a magnetic conductor oriented in a daisy chain so as to penetrate in the thickness direction of the base portion. An anisotropic conductive connector in which one end and the other end are connected to each other by contact with a connection target member, the base portion has a conductive electrode surface at which one end of the conduction portion is exposed, and the conduction portion is connected. An engagement protrusion provided on the connection target member that engages with the concave and convex portions, and an outer skin layer that covers the obstacle source magnetic conductor that remains on the outer surface of the base portion and is exposed without being oriented as a conductive portion. An anisotropic conductive connector is provided.

本発明では、ベース部に、導通部が接続する接続対象部材に設けた取付凹部と凹凸係合する係合突起を備えている。このため筐体や回路基板などの接続対象部材に対し簡単に位置決め固定することができ、機器への取付けを容易にすることができる。また、係合突起に導電電極面を有するため、取付凹部の導電電極面との対向面に回路電極や端子を設ければ、導電電極面と回路電極や端子とを確実に導通接続することができる。 In the present invention, the base portion is provided with an engaging protrusion that engages with the mounting recess provided in the connection target member to which the conducting portion is connected. For this reason, it can be easily positioned and fixed with respect to a connection target member such as a casing or a circuit board, and can be easily attached to a device. In addition, since the engagement protrusion has a conductive electrode surface, if a circuit electrode or a terminal is provided on the surface of the mounting recess facing the conductive electrode surface, the conductive electrode surface can be reliably connected to the circuit electrode or the terminal. it can.

また、ベース部に、障害源磁性導電体を被覆する外皮層を備えている。このため障害源磁性導電体がベース部の表面に露出することがあっても外皮層によって、回路や端子との接触や、ベース部からの脱落を防ぐことができ、障害源磁性導電体による短絡を防止することができる。よって電子機器における予期せぬ短絡等による電気的障害の発生を防止することができる。 Further, the base portion is provided with an outer skin layer that covers the failure source magnetic conductor. For this reason, even if the failure source magnetic conductor may be exposed on the surface of the base portion, the outer skin layer can prevent contact with the circuit and terminals and dropout from the base portion. Can be prevented. Therefore, it is possible to prevent the occurrence of an electrical failure due to an unexpected short circuit or the like in the electronic device.

前記外皮層は、その厚さ寸法を５μｍ〜１５０μｍとすることができる。さらに好ましい厚さ寸法は１０μｍ〜３０μｍである。５μｍより薄くなると絶縁性が低下して短絡等の電気的障害を発生する虞があり、１５０μｍを超えると異方導電性コネクタの厚みが厚くなり小型化が困難になり、特に携帯電話機や携帯メディアプレーヤのような携帯用電子機器への実装に適応しなくなってしまう。 The outer skin layer may have a thickness dimension of 5 μm to 150 μm. A more preferred thickness dimension is 10 μm to 30 μm. If the thickness is less than 5 μm, the insulation property may be reduced, and an electrical failure such as a short circuit may occur. If the thickness exceeds 150 μm, the anisotropic conductive connector becomes thick and difficult to miniaturize. It will no longer be suitable for mounting on portable electronic devices such as players.

本発明は前記異方導電性コネクタについて、係合突起の側面に外皮層を備えている。係合突起に導通部の一端が露出する導電電極面を設けた場合、導通部から枝分かれした分岐磁性導電体が係合突起の側面に露出することがある。しかし本発明では係合突起の側面に外皮層を備えるため、このような分岐磁性導電体の露出を防止することができる。よって係合突起を接続対象部材の取付凹部と係合させて異方導電性コネクタを挟持固定しても、分岐磁性導電体と接続対象部材との接触や、分岐磁性導電体が係合突起の側面から脱落することを防ぐことができ、分岐磁性導電体による短絡等の電気的障害の発生を防止することができる。 In the anisotropic conductive connector according to the present invention, a skin layer is provided on a side surface of the engaging projection. When the conductive electrode surface from which one end of the conducting portion is exposed is provided on the engaging projection, the branched magnetic conductor branched from the conducting portion may be exposed on the side surface of the engaging projection. However, in the present invention, since the outer skin layer is provided on the side surface of the engagement protrusion, it is possible to prevent the branch magnetic conductor from being exposed. Therefore, even if the engaging protrusion is engaged with the mounting recess of the connection target member and the anisotropic conductive connector is clamped and fixed, the contact between the branch magnetic conductor and the connection target member or the branch magnetic conductor is It is possible to prevent falling off from the side surface, and it is possible to prevent the occurrence of an electrical failure such as a short circuit due to the branched magnetic conductor.

本発明は前記異方導電性コネクタについて、外皮層の硬度がベース部の硬度よりも高く、該外皮層をベース部の変形を防ぐ形状保持層とすることができる。このようにすれば、ベース部が軟質で変形し易い場合でも外皮層によってベース部の形状が保持されるため、取扱い易く機器に組み込み易い異方導電性コネクタを実現することができる。特に係合突起の側面にベース部よりも硬度の高い外皮層を備えることで、係合突起を潰れ難くすることができ、接続対象部材の取付凹部に挿入し易くすることができる。また、外皮層とベース部を同材質のゴム状弾性体で形成した場合は、ベース部よりも外皮層により多くの充填剤を混合したり、ベース部より外皮層の架橋密度を高めたりして硬度を高めることができるため、ベース部に比べ外皮層の粘着性を小さくでき、取扱い易く機器に組み込み易い異方導電性コネクタを実現することができる。特に係合突起の側面に外皮層を備えれば、接続対象部材の取付凹部に挿入し易くすることができる。 In the anisotropic conductive connector according to the present invention, the hardness of the outer skin layer is higher than the hardness of the base portion, and the outer skin layer can be a shape-retaining layer that prevents deformation of the base portion. In this way, even when the base portion is soft and easily deformed, the shape of the base portion is maintained by the outer skin layer, so that an anisotropic conductive connector that is easy to handle and easy to incorporate into the device can be realized. In particular, by providing an outer skin layer having a hardness higher than that of the base portion on the side surface of the engagement protrusion, the engagement protrusion can be made difficult to be crushed and can be easily inserted into the attachment recess of the connection target member. In addition, when the outer skin layer and the base portion are formed of the same material rubber elastic body, more filler is mixed in the outer skin layer than the base portion, or the cross-linking density of the outer skin layer is increased from the base portion. Since the hardness can be increased, the adhesiveness of the outer skin layer can be reduced as compared with the base portion, and an anisotropic conductive connector that is easy to handle and easy to incorporate into a device can be realized. In particular, if an outer skin layer is provided on the side surface of the engagement protrusion, it can be easily inserted into the attachment recess of the connection target member.

ベース部及び外皮層をゴム状弾性体で形成する場合、ベース部の硬度がＪＩＳＫ６２５３でＡ１０〜Ａ５０であり、外皮層の硬度をＪＩＳＫ６２５３でＡ１０〜Ａ９０とすることができる。ベース部の硬度がＡ１０未満であるとベース部の圧縮永久歪や物理的強度が悪くなり、Ａ５０を超えるとベース部を挟持固定する際に回路基板などの接続対象部材にかかる反発荷重が大きくなり回路基板などの接続対象部材が変形する虞がある。また、外皮層の硬度がＡ１０未満であると物理的強度が悪くなり、Ａ９０を超えるとベース部の変形に対して追従し難くなり外皮層がベース部から剥がれることがある。なお、ゴム状弾性体とは、熱硬化性エラストマー、熱可塑性エラストマーのことをいう。 When the base portion and the outer skin layer are formed of a rubber-like elastic body, the hardness of the base portion can be A10 to A50 according to JIS K6253, and the hardness of the outer skin layer can be set to A10 to A90 according to JIS K6253. If the hardness of the base part is less than A10, the compression set and physical strength of the base part deteriorate, and if it exceeds A50, the repulsive load applied to the connection target member such as a circuit board increases when the base part is clamped and fixed. There is a possibility that a connection target member such as a circuit board is deformed. Further, when the hardness of the outer skin layer is less than A10, the physical strength is deteriorated, and when it exceeds A90, it is difficult to follow the deformation of the base portion, and the outer skin layer may be peeled off from the base portion. The rubber-like elastic body means a thermosetting elastomer or a thermoplastic elastomer.

本発明は前記異方導電性コネクタについて、外皮層をベース部と同材質のものとすることができる。このようにすれば、例えば塗布により外皮層をベース部に形成する場合には、ベース部が外皮層となる塗材をはじき難く層厚が均一の外皮層を容易に形成することができる。 In the anisotropic conductive connector according to the present invention, the outer skin layer may be made of the same material as the base portion. In this way, when the outer skin layer is formed on the base portion by application, for example, it is difficult to repel the coating material in which the base portion becomes the outer skin layer, and the outer skin layer having a uniform layer thickness can be easily formed.

本発明は前記異方導電性コネクタについて、外皮層を樹脂フィルムとすることができる。このようにすれば、樹脂フィルムはゴム状弾性体より高い引裂強度であるため、樹脂フィルムがベース部の外面でベース部を破損し難くすることができる。さらに樹脂フィルムは、ゴム状弾性体より剛性が高くベース部の形状を保持し易くでき、かつゴム状弾性体より粘着性を小さくできるため、取扱性を高めることができる。よって機器に組み込み易い異方導電性コネクタを実現することができる。なお、樹脂フィルムとは、熱硬化性樹脂シート、熱可塑性樹脂シートなどのことをいう。 In the present invention, the outer skin layer of the anisotropic conductive connector can be a resin film. By doing so, since the resin film has a higher tear strength than the rubber-like elastic body, the resin film can hardly make the base part damaged on the outer surface of the base part. Furthermore, since the resin film has higher rigidity than the rubber-like elastic body and can easily maintain the shape of the base portion, and the adhesiveness can be made smaller than that of the rubber-like elastic body, the handleability can be improved. Therefore, an anisotropic conductive connector that can be easily incorporated into a device can be realized. The resin film means a thermosetting resin sheet, a thermoplastic resin sheet, or the like.

本発明は前記異方導電性コネクタについて、係合突起に抜止めリブを設けることができる。また係合突起に外皮層を有する場合には外皮層に抜止めリブを設けることができる。これらによれば、例えば異方導電性コネクタが機器の取付凹部から容易には脱落し難くなり、取付凹部に取付けた異方性導電コネクタの取付姿勢に拘わらず機器を組立てることができ、製造上の利便性を高めることができる。 In the anisotropic conductive connector according to the present invention, a retaining rib can be provided on the engaging projection. In addition, when the engagement protrusion has an outer skin layer, a retaining rib can be provided on the outer skin layer. According to these, for example, the anisotropic conductive connector is not easily dropped from the mounting recess of the device, and the device can be assembled regardless of the mounting posture of the anisotropic conductive connector mounted on the mounting recess. Can improve convenience.

本発明は前記異方導電性コネクタについて、導通部の軸交差方向における係合突起の長さを取付凹部の開口幅よりも長くする。また係合突起の外周面に外皮層を有する場合には、導通部の軸交差方向における外皮層の長さを取付凹部の開口幅よりも長くする。これによれば、機器の取付凹部に係合突起が圧入され、この圧入によって導通部として配向されている磁性導電体どうしを導通部の軸交差方向でより密着させることができる。また、導通部の一端と他端はそれぞれ接続対象部材と押圧接触しており、係合突起が軸交差方向で取付凹部によって圧縮を受けて絞られると、係合突起の基端側のゴム状弾性体が導通部の軸方向で取付凹部の外部へ逃れようとする。これを利用して導通部の一端側と他端側における接続対象部材との押圧接触力を調整することができ、より信頼性の高い確実な導電接続を実現することができる。具体的にはそのような係合突起やベース部を形成するゴム状弾性体の挙動によって機器における取付凹部の寸法公差や接続対象部材間の間隔公差に適応しつつ信頼性の高い確実な導電接続を実現できる。 In the anisotropic conductive connector according to the present invention, the length of the engaging protrusion in the axis crossing direction of the conducting portion is made longer than the opening width of the mounting recess. Further, when the outer peripheral surface of the engaging protrusion has the outer skin layer, the length of the outer skin layer in the axis crossing direction of the conducting portion is made longer than the opening width of the mounting recess. According to this, the engagement protrusion is press-fitted into the mounting concave portion of the device, and the magnetic conductors oriented as the conducting portion can be brought into closer contact with each other in the crossing direction of the conducting portion. In addition, one end and the other end of the conducting portion are in press contact with the connection target member, respectively, and when the engaging protrusion is compressed by the mounting recess in the axis crossing direction, the rubber shape on the proximal end side of the engaging protrusion The elastic body tends to escape outside the mounting recess in the axial direction of the conducting portion. By utilizing this, the pressing contact force between the connection target member on one end side and the other end side of the conducting portion can be adjusted, and more reliable and reliable conductive connection can be realized. Specifically, reliable and reliable conductive connection while adapting to the dimensional tolerance of the mounting recess in the equipment and the gap tolerance between the members to be connected by the behavior of the rubber-like elastic body forming such engagement protrusions and base part Can be realized.

本発明は前記異方導電性コネクタについて、導通部の端部を除く係合突起の端面に外皮層を設ける。これによれば、係合突起の端面に導通部のみを露出させることができるので、接続対象部材が例えば集積度の高い回路基板の回路電極や端子であり、それが微細であっても、他の配線や電極等と接触させずに目的の回路電極や端子にのみ導通接触させることができる。これと同様に、本発明の前記異方導電性コネクタについては導通部の端部を除くベース部の端面に外皮層を設けることで、ベース部と対向する回路基板についても目的の回路電極や端子にのみ導通接触させることができる。 In the anisotropic conductive connector according to the present invention, an outer skin layer is provided on the end surface of the engaging protrusion excluding the end portion of the conducting portion. According to this, since only the conductive portion can be exposed at the end face of the engagement protrusion, the connection target member is, for example, a circuit electrode or a terminal of a highly integrated circuit board. It is possible to make a conductive contact only with a target circuit electrode or terminal without making contact with the wiring or electrode. Similarly, in the anisotropic conductive connector of the present invention, by providing an outer skin layer on the end surface of the base portion excluding the end portion of the conductive portion, the target circuit electrode or terminal can be applied to the circuit board facing the base portion. It is possible to make a conductive contact only on the surface.

本発明の異方導電性コネクタによれば、係合突起を利用して接続対象部材に対し簡単に位置決め固定することができ、機器への取付けを容易にすることができる。また、接続対象部材における取付凹部の導電電極面との対向面に回路電極や端子を設ければ、導電電極面と回路電極や端子とを確実に導通接続することができる。さらに、障害源磁性導電体がベース部の表面に露出することがあってもこれを被覆する外皮層によって、障害源磁性導電体と回路や端子との接触や、障害源磁性導電体のベース部から脱落を防ぐことができ、障害源磁性導電体による短絡を防止することができる。よって電子機器における予期せぬ短絡等による電気的障害の発生を防止することができる。 According to the anisotropic conductive connector of the present invention, it is possible to easily position and fix the connection target member by using the engaging protrusion, and it is possible to facilitate attachment to the device. Moreover, if a circuit electrode or a terminal is provided on the surface of the connection target member facing the conductive electrode surface of the mounting recess, the conductive electrode surface and the circuit electrode or terminal can be reliably connected to each other. Furthermore, even if the failure source magnetic conductor may be exposed on the surface of the base portion, the outer skin layer that covers the failure source makes contact between the failure source magnetic conductor and the circuit or terminal, and the base portion of the failure source magnetic conductor. Can be prevented from falling off, and a short circuit due to the failure source magnetic conductor can be prevented. Therefore, it is possible to prevent the occurrence of an electrical failure due to an unexpected short circuit or the like in the electronic device.

図面を参照して本発明の実施形態の数例をさらに詳しく説明する。なお、以下の各実施形態において、共通する構造、材料、製造方法については重複説明を省略する。また、本明細書では説明の便宜上、図面の上下に対応させて異方導電性コネクタの上下を定義するが、実際の用いられ方においては、上下が逆転し、また半転することなどがあり得る。 Several examples of embodiments of the present invention will be described in more detail with reference to the drawings. In each of the following embodiments, a duplicate description of the common structure, material, and manufacturing method is omitted. Further, in this specification, for the convenience of explanation, the upper and lower sides of the anisotropic conductive connector are defined corresponding to the upper and lower sides of the drawing. However, in the actual usage, the upper and lower sides may be reversed or half-turned. obtain.

第１実施形態〔図１〜図３〕：第１実施形態の異方導電性コネクタ１１は、ベース部１２と、導通部１３と、外皮層１４とを備えている。 1st Embodiment [FIGS. 1-3] The anisotropic conductive connector 11 of 1st Embodiment is provided with the base part 12, the conduction | electrical_connection part 13, and the outer skin layer 14. FIG.

ベース部１２は絶縁性のゴム状弾性体で形成されており、その内部には厚み方向を導通方向とする導通部１３を有している。このベース部１２の上面１２ａにはベース部１２の厚み方向（導通部１３の軸方向）に沿って突出する円柱形状の係合突起１５が設けられている。ベース部１２の硬度は、ＪＩＳＫ６２５３Ａ１０〜Ａ５０であることが好ましい。硬度がＡ１０より小さいと圧縮永久歪が大きく物理的強度も弱くなってしまい、実装時の導通が不安定になる虞がある。硬度がＡ５０より大きいと圧縮荷重が大きくなり、異方導電性コネクタ１１を回路基板などで挟持固定する際に回路基板が変形する虞がある。 The base portion 12 is formed of an insulating rubber-like elastic body, and has a conducting portion 13 having a thickness direction as a conducting direction. A cylindrical engagement protrusion 15 is provided on the upper surface 12a of the base portion 12 so as to protrude along the thickness direction of the base portion 12 (the axial direction of the conducting portion 13). The hardness of the base portion 12 is preferably JIS K6253 A10 to A50. If the hardness is smaller than A10, the compression set is large and the physical strength is also weakened, and there is a possibility that conduction during mounting becomes unstable. If the hardness is greater than A50, the compressive load increases and the circuit board may be deformed when the anisotropic conductive connector 11 is clamped and fixed by the circuit board or the like.

導通部１３は粒子状の磁性導電体３が後述する磁場配向によって数珠繋ぎに配向することで形成されている。この導通部１３の一端はベース部１２の係合突起１５の端面に露出して導電電極面１３ａを形成しており、他端はベース部１２の下面１２ｂに露出して導電電極面１３ｂを形成している。 The conducting portion 13 is formed by aligning the particulate magnetic conductor 3 in a daisy chain by magnetic field orientation described later. One end of the conductive portion 13 is exposed at the end face of the engaging protrusion 15 of the base portion 12 to form a conductive electrode surface 13a, and the other end is exposed at the lower surface 12b of the base portion 12 to form the conductive electrode surface 13b. is doing.

外皮層１４は絶縁性のゴム状弾性体で形成されており、ベース部１２における係合突起１５の端面を除く上面１２ａを覆っている。外皮層１４の硬度は、ＪＩＳＫ６２５３でＡ１０〜Ａ９０であることが好ましい。硬度がＡ１０未満であると物理的強度が悪くなり、Ａ９０を超えるとベース部１２の変形に対して追従し難くなり外皮層１４がベース部１２から剥離するおそれが高くなる。また、外皮層１４の層厚は、５μｍ〜１５０μｍとすることができ、好ましくは１０μｍ〜１００μｍとすることができる。５μｍより薄くなると絶縁性が低下して短絡等の電気的障害を生じるおそれがあり、１５０μｍを超えると異方導電性コネクタ自身の厚みが厚くなり小型化が困難になる。 The outer skin layer 14 is formed of an insulating rubber-like elastic body, and covers the upper surface 12a excluding the end surface of the engagement protrusion 15 in the base portion 12. The hardness of the outer skin layer 14 is preferably A10 to A90 according to JIS K6253. When the hardness is less than A10, the physical strength is deteriorated, and when it exceeds A90, it is difficult to follow the deformation of the base portion 12 and the outer skin layer 14 is likely to peel from the base portion 12. Moreover, the layer thickness of the outer skin layer 14 can be 5 micrometers-150 micrometers, Preferably it can be 10 micrometers-100 micrometers. If the thickness is less than 5 μm, the insulating property may be lowered and an electrical failure such as a short circuit may occur. If the thickness exceeds 150 μm, the anisotropic conductive connector itself becomes thick and difficult to downsize.

この異方導電性コネクタ１１には、導通部１３に正しく配向せずに遊離してベース部１２の表面に露出している未配向磁性導電体１６ａ、導通部４から枝分かれして係合突起１５の側面１５ａに露出している分岐磁性導電体１６ｂ、さらには、導通部４とは異なる部分でベース部１２の厚み方向に配向している不正配向磁性導電体１６ｃといった障害源磁性導電体１６が存在している。しかしながら、係合突起１５の端面を除く上面を外皮層１４で覆っているため、障害源磁性導電体１６の外部への露出が妨げられている。 The anisotropic conductive connector 11 includes a non-oriented magnetic conductor 16a that is not properly oriented to the conducting portion 13 and is exposed on the surface of the base portion 12 and is branched from the conducting portion 4 and is engaged with the engaging protrusion 15. A failure source magnetic conductor 16 such as a branched magnetic conductor 16b exposed on the side surface 15a of the magnetic substrate 16 and an improperly oriented magnetic conductor 16c oriented in the thickness direction of the base portion 12 at a portion different from the conductive portion 4. Existing. However, since the upper surface excluding the end face of the engagement protrusion 15 is covered with the outer skin layer 14, exposure of the failure source magnetic conductor 16 to the outside is prevented.

本実施形態の異方導電性コネクタ１１は、例えば図３で示すように、係合突起１５を電子機器の筐体５などに形成した取付凹部５ａと係合させて、上側回路基板６ａと下側回路基板６ｂとの間に挟持、固定して電子機器に取り付ける。上側回路基板６ａに設けた上側回路電極７ａには、異方導電性コネクタ１１の導電電極面１３ａが接触する。下側回路基板６ｂには、下側回路電極７ｂと回路８とが設けられており、異方導電性コネクタ１１の導電電極面１３ｂが下側回路電極７ｂと接触する。こうして、筐体５側の上側回路電極７ａと下側回路基板６ｂの下側回路電極７ｂとを電気的に接続している。 For example, as shown in FIG. 3, the anisotropic conductive connector 11 of the present embodiment has an engaging protrusion 15 engaged with a mounting recess 5a formed on a casing 5 of an electronic device, and the upper circuit board 6a. It is sandwiched and fixed between the side circuit board 6b and attached to the electronic device. The conductive electrode surface 13a of the anisotropic conductive connector 11 is in contact with the upper circuit electrode 7a provided on the upper circuit board 6a. The lower circuit board 6b is provided with a lower circuit electrode 7b and a circuit 8, and the conductive electrode surface 13b of the anisotropic conductive connector 11 is in contact with the lower circuit electrode 7b. Thus, the upper circuit electrode 7a on the housing 5 side and the lower circuit electrode 7b of the lower circuit board 6b are electrically connected.

ここで異方導電性コネクタ１１の材質について説明する。ベース部１２の材質は、液状ゴムを硬化した絶縁性のゴム状弾性体、又は加熱溶融可能な絶縁性のゴム状弾性体を使用できる。液状ゴムとしては、例えば、シリコーンゴム、天然ゴム、イソプレンゴム、ブタジエンゴム、アクリロニトリルブタジエンゴム、１，２−ポリブタジエン、スチレン−ブタジエンゴム、クロロプレンゴム、ニトリルゴム、ブチルゴム、エチレン−プロピレンゴム、クロロスリホンゴム、ポリエチレンゴム、アクリルゴム、エピクロルヒドリンゴム、フッ素ゴム、ウレタンゴムなどが挙げられる。加熱溶融可能なゴム状弾性体としては、例えば、スチレン系熱可塑性エラストマー、オレフィン系熱可塑性エラストマー、エステル系熱可塑性エラストマー、ウレタン系熱可塑性エラストマー、アミド系熱可塑性エラストマー、塩化ビニル系熱可塑性エラストマー、フッ化系熱可塑性エラストマー、イオン架橋系熱可塑性エラストマーなどが挙げられる。成形加工性、電気絶縁性、耐候性の観点から液状のシリコーンゴムを用いることが好ましい。液状ゴム又は加熱溶融時の粘度は、含有された磁性導電体３が磁場によって流動可能な粘度であることが必要であり、１Ｐａ・ｓ〜２５０Ｐａ・ｓが好ましく、１０Ｐａ・ｓ〜１００Ｐａ・ｓがより好ましい。 Here, the material of the anisotropic conductive connector 11 will be described. As the material of the base portion 12, an insulating rubber-like elastic body obtained by curing liquid rubber or an insulating rubber-like elastic body that can be heated and melted can be used. Examples of the liquid rubber include silicone rubber, natural rubber, isoprene rubber, butadiene rubber, acrylonitrile butadiene rubber, 1,2-polybutadiene, styrene-butadiene rubber, chloroprene rubber, nitrile rubber, butyl rubber, ethylene-propylene rubber, and chlorosulfone. Examples thereof include rubber, polyethylene rubber, acrylic rubber, epichlorohydrin rubber, fluorine rubber, and urethane rubber. Examples of heat-meltable rubber-like elastic bodies include styrene-based thermoplastic elastomers, olefin-based thermoplastic elastomers, ester-based thermoplastic elastomers, urethane-based thermoplastic elastomers, amide-based thermoplastic elastomers, vinyl chloride-based thermoplastic elastomers, Examples thereof include a fluorinated thermoplastic elastomer and an ion-crosslinked thermoplastic elastomer. It is preferable to use liquid silicone rubber from the viewpoints of moldability, electrical insulation, and weather resistance. The viscosity at the time of liquid rubber or heat melting needs to be a viscosity that allows the contained magnetic conductor 3 to flow by a magnetic field, preferably 1 Pa · s to 250 Pa · s, and 10 Pa · s to 100 Pa · s. More preferred.

導通部１３を構成する磁性導電体３の材質は、強磁性を示し導電性を有する粒子を使用できる。例えば、ニッケル、コバルト、鉄などの強磁性体金属又はそれらを含む合金の粒子が挙げられる。このほかに、ニッケル、コバルト、鉄、フェライトなどの強磁性体金属を良導電性金属で被覆した粒子、導電性又は絶縁性の粒子の表面をニッケル、コバルト、鉄などで被覆した粒子も使用できる。なかでも強磁性体を良導電性金属で被覆した粒子が好ましい。良導電性金属としては、金、銀、白金、アルミニウム、銅、パラジウム、クロムなどの金属類やステンレスなどの合金類を用いることもできる。 As the material of the magnetic conductor 3 constituting the conducting portion 13, particles that exhibit ferromagnetism and have conductivity can be used. For example, particles of a ferromagnetic metal such as nickel, cobalt, iron, or an alloy containing them can be used. In addition, particles in which a ferromagnetic metal such as nickel, cobalt, iron or ferrite is coated with a highly conductive metal, or particles in which the surface of a conductive or insulating particle is coated with nickel, cobalt or iron can also be used. . Among these, particles obtained by coating a ferromagnetic material with a highly conductive metal are preferable. As the highly conductive metal, metals such as gold, silver, platinum, aluminum, copper, palladium, and chromium, and alloys such as stainless steel can be used.

外皮層１４の材質は、ベース部１２の撓みに追従可能な絶縁性のゴム状弾性体や絶縁性の樹脂が使用できる。ゴム状弾性体としては、例えば、シリコーンゴム、ポリオレフィン系ゴム、ポリウレタンゴムなどが挙げられる。樹脂としては、例えば、シリコーン樹脂、ポリウレタン樹脂、エポキシ樹脂、アクリル樹脂、アクリルウレタン系樹脂、ポリエステル樹脂、ポリアミド樹脂などが挙げられる。 As the material of the outer skin layer 14, an insulating rubber-like elastic body or an insulating resin that can follow the bending of the base portion 12 can be used. Examples of the rubber-like elastic body include silicone rubber, polyolefin rubber, polyurethane rubber, and the like. Examples of the resin include a silicone resin, a polyurethane resin, an epoxy resin, an acrylic resin, an acrylic urethane resin, a polyester resin, and a polyamide resin.

第１実施形態における異方導電性コネクタ１１の製造方法について説明する。磁性導電体３を分散した液状ゴムを金型のキャビティー内に注入し、このキャビティー内に磁力を印加して分散している磁性導電体３を集めることで、導通部１３として磁性導電体３を磁場配向させる。その後、液状ゴムを硬化して導通部１３を有するベース部１２を得る。次に導電電極面１３ａをマスキングし、ベース部１２の上面１２ａにスプレーコートによって外皮層１４を設ける。最後にマスキングを除去することで異方導電性コネクタ１１が得られる。 A method for manufacturing the anisotropic conductive connector 11 in the first embodiment will be described. The liquid rubber in which the magnetic conductor 3 is dispersed is injected into the cavity of the mold, and the magnetic conductor 3 dispersed by applying a magnetic force in the cavity is collected. 3 is magnetically oriented. Thereafter, the liquid rubber is cured to obtain the base portion 12 having the conductive portion 13. Next, the conductive electrode surface 13a is masked, and the outer skin layer 14 is provided on the upper surface 12a of the base portion 12 by spray coating. Finally, the anisotropic conductive connector 11 is obtained by removing the masking.

外皮層１４の形成においては、スプレーコート以外の種々の塗布方法を用いることができる。例えば、外皮層１４形成用の液状樹脂に浸漬することで塗布しても良い。外皮層１４に樹脂フィルムを用いる場合は、予め外皮層１４の形に成形しておき、ベース部１２成形用金型に樹脂フィルムをインサートし、ベース部１２となる液状ゴムを注入して硬化させる時に樹脂フィルムと一体化することもできる。 In forming the outer skin layer 14, various coating methods other than spray coating can be used. For example, you may apply | coat by immersing in the liquid resin for skin layer 14 formation. When using a resin film for the outer skin layer 14, the resin film is previously formed into the shape of the outer skin layer 14, the resin film is inserted into the mold for forming the base portion 12, and liquid rubber to be the base portion 12 is injected and cured. Sometimes it can be integrated with the resin film.

第１実施形態の異方導電性コネクタ１１の作用、効果について説明する。異方導電性コネクタ１１によれば、係合突起１５を筐体５などに形成した取付凹部５ａと係合させるため、筐体５に対し簡単に位置決め固定することができ、機器への取付けを容易にすることができる。また、係合突起１５に導電電極面１３ａを有するため、取付凹部５ａにおける上側回路基板６ａの上側回路電極７ａに対し確実に導通接続することができる。 The operation and effect of the anisotropic conductive connector 11 of the first embodiment will be described. According to the anisotropic conductive connector 11, the engaging protrusion 15 is engaged with the mounting recess 5a formed in the housing 5 or the like, so that it can be easily positioned and fixed with respect to the housing 5, and can be attached to the device. Can be easily. In addition, since the engagement protrusion 15 has the conductive electrode surface 13a, it is possible to reliably connect to the upper circuit electrode 7a of the upper circuit board 6a in the mounting recess 5a.

ベース部１２における係合突起１５の端面を除く上面１２ａに外皮層１４を設けているため、障害源磁性導電体１６がベース部１２の表面に露出することがあっても外皮層１４によって、筐体６との接触や、ベース部１２からの脱落を防ぐことができ、障害源磁性導電体１６による短絡を防止することができる。よって電子機器における予期せぬ短絡等による電気的障害の発生を防止することができる。 Since the outer skin layer 14 is provided on the upper surface 12 a excluding the end face of the engagement protrusion 15 in the base portion 12, even if the failure source magnetic conductor 16 is exposed on the surface of the base portion 12, Contact with the body 6 and falling off from the base portion 12 can be prevented, and a short circuit caused by the failure source magnetic conductor 16 can be prevented. Therefore, it is possible to prevent the occurrence of an electrical failure due to an unexpected short circuit or the like in the electronic device.

外皮層１４をベース部１２と同材質のゴム状弾性体、例えばシリコーンゴムで形成すれば、スプレー塗布した外皮層１４用塗料を、ベース部１２の上面１２ａや係合突起１５の側面１５ａにはじかれ難く塗着させることができ、外皮層１４の硬化と同時に均一な層厚の外皮層１４を簡単に形成することができる。 If the outer skin layer 14 is formed of a rubber-like elastic body made of the same material as the base portion 12, such as silicone rubber, the spray-coated paint for the outer skin layer 14 is applied to the upper surface 12 a of the base portion 12 and the side surface 15 a of the engaging protrusion 15. The outer skin layer 14 having a uniform thickness can be easily formed simultaneously with the hardening of the outer skin layer 14.

外皮層１４の硬度をベース部１２の硬度よりも高くすれば外皮層１４をベース部１２の変形を防ぐ形状保持層とすることができる。例えばベース部１２を軟質で変形し易い硬度Ａ１５とした場合でも硬度Ａ８０の外皮層１４によってベース部１２の形状が保持されるため、取扱い易く機器に組み込み易い異方導電性コネクタ１１を実現することができる。特に係合突起１５の側面１５ａにベース部１２の硬度よりも高い硬度の外皮層１４を備えることで、係合突起１５を潰れ難くすることができ、筐体５の取付凹部５ａに挿入し易くすることができる。 If the hardness of the outer skin layer 14 is made higher than the hardness of the base portion 12, the outer skin layer 14 can be made into a shape retaining layer that prevents the deformation of the base portion 12. For example, even when the base portion 12 is soft and easily deformable with a hardness A15, the shape of the base portion 12 is maintained by the outer skin layer 14 having a hardness A80. Can do. In particular, the side surface 15 a of the engagement protrusion 15 is provided with the outer skin layer 14 having a hardness higher than that of the base portion 12, so that the engagement protrusion 15 can be hardly crushed and can be easily inserted into the mounting recess 5 a of the housing 5. can do.

第２実施形態〔図４〕：第２実施形態の異方導電性コネクタ１７が第１実施形態の異方導電性コネクタ１１と異なるのは、ベース部１８と外皮層１９，２０の構成である。残余の構成は第１実施形態と同じである。 Second Embodiment [FIG. 4] The anisotropic conductive connector 17 of the second embodiment is different from the anisotropic conductive connector 11 of the first embodiment in the configuration of the base portion 18 and the skin layers 19 and 20. . The remaining configuration is the same as in the first embodiment.

ベース部１８の表面１８ａには、第１実施形態のベース部１２と同様にベース部１８の厚み方向（導通部１３の軸方向）に沿って突出する円柱形状の係合突起１５が設けられている。しかし下面１８ｂはベース部１２のように平坦ではなく、厚み方向に沿って突出する突起２１が設けられ、この突起２１の高さ寸法は後述する外皮層２０の肉厚と同等に形成されている。そしてベース部１８の内部で厚み方向を導通方向として形成されている導通部１３は、その一端が係合突起１５の端面に露出して導電電極面１３ａを形成しており、他端は突起２１の端面に露出して導電電極面１３ｂを形成している。 On the surface 18 a of the base portion 18, similarly to the base portion 12 of the first embodiment, a cylindrical engagement protrusion 15 that protrudes along the thickness direction of the base portion 18 (the axial direction of the conducting portion 13) is provided. Yes. However, the lower surface 18b is not flat like the base portion 12, but is provided with a protrusion 21 protruding along the thickness direction, and the height of the protrusion 21 is formed to be equal to the thickness of the outer skin layer 20 described later. . The conductive portion 13 formed in the base portion 18 with the thickness direction as the conductive direction has one end exposed at the end face of the engagement protrusion 15 to form the conductive electrode surface 13a, and the other end is the protrusion 21. A conductive electrode surface 13b is formed by being exposed at the end surface of the electrode.

外皮層１９は係合突起１５の側面１５ａを覆っており、ベース部１８の上面１８ａは覆っていない。外皮層２０はベース部１８の下面１８ｂ及び突起２１の側面を覆っており、外皮層２０の外面と突起２１の端面は面一に形成されている。 The outer skin layer 19 covers the side surface 15 a of the engaging protrusion 15, and does not cover the upper surface 18 a of the base portion 18. The outer skin layer 20 covers the lower surface 18b of the base portion 18 and the side surfaces of the protrusions 21, and the outer surface of the outer skin layer 20 and the end face of the protrusions 21 are formed flush with each other.

第２実施形態の異方導電性コネクタ１７の作用、効果について説明する。異方導電性コネクタ１７によれば、係合突起１５の側面１５ａに外皮層１９を備えるため、第１実施形態の異方導電コネクタ１１と同様に、導通部１３から枝分かれした分岐磁性導電体１６ｂがあっても、その分岐磁性導電体１６ｂの露出を防止することができる。よって係合突起１５を筐体６の取付凹部６ａと係合させて異方導電性コネクタ１７を挟持固定しても、分岐磁性導電体１６ｂと筐体６の接触や、分岐磁性導電体１６ｂが係合突起１５の側面１５ａから脱落することを防ぐことができ、分岐磁性導電体１６ｂによる短絡等の電気的障害の発生を防止することができる。 The operation and effect of the anisotropic conductive connector 17 of the second embodiment will be described. According to the anisotropic conductive connector 17, since the outer skin layer 19 is provided on the side surface 15 a of the engaging protrusion 15, the branched magnetic conductor 16 b branched from the conducting portion 13 as in the anisotropic conductive connector 11 of the first embodiment. Even if there is, the exposure of the branched magnetic conductor 16b can be prevented. Therefore, even if the engaging protrusion 15 is engaged with the mounting recess 6a of the housing 6 and the anisotropic conductive connector 17 is sandwiched and fixed, the contact between the branched magnetic conductor 16b and the housing 6 or the branched magnetic conductor 16b is not It is possible to prevent the engagement protrusion 15 from dropping off from the side surface 15a, and it is possible to prevent the occurrence of an electrical failure such as a short circuit due to the branched magnetic conductor 16b.

外皮層２０を備えるため、導通部１３とは異なる部分でベース部１８の厚み方向に配向する不正配向磁性導電体１６ｃがあっても、不正配向磁性導電体１６ｃと下側回路基板６ｂの回路８との接触を防ぐことができ、筐体６と下側回路基板６ｂの回路８との短絡を防止することができる。 Since the outer skin layer 20 is provided, even if there is an improperly oriented magnetic conductor 16c that is oriented in the thickness direction of the base 18 at a portion different from the conductive portion 13, the improperly oriented magnetic conductor 16c and the circuit 8 of the lower circuit board 6b. Can be prevented, and a short circuit between the housing 6 and the circuit 8 of the lower circuit board 6b can be prevented.

ベース部１８の突部２１の高さ寸法を外皮層２０の厚さ寸法と同等とし、導電電極面１３ｂを外皮層２０の外面と面一に形成したため、異方導電性コネクタ１７と下側回路基板６ｂとを均一な押圧力で接触させることができる。 Since the height dimension of the protrusion 21 of the base portion 18 is made equal to the thickness dimension of the outer skin layer 20 and the conductive electrode surface 13b is formed flush with the outer surface of the outer skin layer 20, the anisotropic conductive connector 17 and the lower circuit are formed. The substrate 6b can be contacted with a uniform pressing force.

第３実施形態〔図５〕：第３実施形態の異方導電性コネクタ２２が第２実施形態の異方導電性コネクタ１７と異なるのは、外皮層１４を備える構成である。残余の構成は第２実施形態と同じである。 Third Embodiment [FIG. 5] The anisotropic conductive connector 22 of the third embodiment is different from the anisotropic conductive connector 17 of the second embodiment in the configuration including the outer skin layer 14. The remaining configuration is the same as in the second embodiment.

第３実施形態のベース部１８の表面１８ａ側には、第２実施形態の外皮層１９に替えて外皮層１４を備えている。 On the surface 18a side of the base portion 18 of the third embodiment, a skin layer 14 is provided instead of the skin layer 19 of the second embodiment.

第３実施形態の異方導電性コネクタ２２は第２実施形態の異方導電性コネクタ１７と同様の作用、効果を発揮するほか、さらに次の作用、効果を発揮する。すなわち異方導電性コネクタ２２によれば、外皮層１４を備えるため、第２実施形態の異方導電コネクタ１７と同様に、分岐磁性導電体１６ｂがあっても分岐磁性導電体１６ｂと筐体６の接触を防ぐことができる。さらにベース部１８の上面１８ａを覆っているため、未配向磁性導電体１６ａや不正配向磁性導電体１６ｃがあっても、未配向磁性導電体１６ａや不正配向磁性導電体１６ｃと筐体６との接触、及びこれらの脱落することを防ぐことができる。 The anisotropic conductive connector 22 of the third embodiment exhibits the same operations and effects as the anisotropic conductive connector 17 of the second embodiment, and further exhibits the following operations and effects. That is, according to the anisotropic conductive connector 22, since the outer skin layer 14 is provided, the branched magnetic conductor 16 b and the housing 6 are provided even if the branched magnetic conductor 16 b is provided, similarly to the anisotropic conductive connector 17 of the second embodiment. Can prevent contact. Further, since the upper surface 18a of the base portion 18 is covered, even if there is the unoriented magnetic conductor 16a or the misoriented magnetic conductor 16c, the unoriented magnetic conductor 16a or the improperly oriented magnetic conductor 16c and the housing 6 are arranged. It is possible to prevent contact and dropping of these.

第４実施形態〔図６〕：第４実施形態の異方導電性コネクタ２３が第３実施形態の異方導電性コネクタ２２と異なるのは、ベース部２４の構成である。残余の構成は第３実施形態と同じである。 Fourth Embodiment [FIG. 6] The anisotropic conductive connector 23 of the fourth embodiment is different from the anisotropic conductive connector 22 of the third embodiment in the configuration of the base portion 24. The remaining configuration is the same as in the third embodiment.

ベース部２４の上面２４ａには第３実施形態のベース部１８と同様に係合突起１５が設けられ、ベース部２４の上面２４ａ及び係合突起１５の側面１５ａを外皮層１４が覆っている。しかしベース部２４の下面２４ｂは第３実施形態のベース部１８と異なり、係合突起１５が設けられ、ベース部２４の下面２４ｂ及び係合突起１５の側面１５ａを外皮層１４が覆っている。 Similar to the base portion 18 of the third embodiment, the upper surface 24 a of the base portion 24 is provided with the engaging protrusion 15, and the outer skin layer 14 covers the upper surface 24 a of the base portion 24 and the side surface 15 a of the engaging protrusion 15. However, unlike the base portion 18 of the third embodiment, the lower surface 24 b of the base portion 24 is provided with the engagement protrusion 15, and the outer skin layer 14 covers the lower surface 24 b of the base portion 24 and the side surface 15 a of the engagement protrusion 15.

第４実施形態の異方導電性コネクタ２３は第３実施形態の異方導電性コネクタ２２と同様の作用、効果を発揮するほか、さらに次の作用、効果を発揮する。すなわち異方導電性コネクタ２３によれば、係合突起１５が上下両面に形成されているため、筐体５の取付凹部５ａと同様の取付凹部を回路基板６ｂ（図３参照）、筐体、回路基板６ｂの上に設ける取付凹部を形成するための筒状の取付ガイド部材など、機器内部の構造要素に設ければ、回路基板６ｂとも強固に結合させることができる。また、異方導電性コネクタ２３の回路基板６ｂに対する位置決めが容易となり組み付け作業が簡単になる。 The anisotropic conductive connector 23 of the fourth embodiment exhibits the same operations and effects as the anisotropic conductive connector 22 of the third embodiment, and further exhibits the following operations and effects. That is, according to the anisotropic conductive connector 23, since the engaging protrusions 15 are formed on the upper and lower surfaces, the mounting recess similar to the mounting recess 5a of the housing 5 is formed on the circuit board 6b (see FIG. 3), the housing, If it is provided in a structural element inside the device such as a cylindrical mounting guide member for forming a mounting recess provided on the circuit board 6b, it can be firmly coupled to the circuit board 6b. Further, the anisotropic conductive connector 23 can be easily positioned with respect to the circuit board 6b, and the assembling work is simplified.

第５実施形態〔図７〕：第５実施形態の異方導電性コネクタ２５が第１実施形態の異方導電性コネクタ１１と異なるのは、係合突起２６を有するベース部２７と外皮層２８の構成である。残余の構成は第１実施形態と同じである。 Fifth Embodiment [FIG. 7] The anisotropic conductive connector 25 of the fifth embodiment is different from the anisotropic conductive connector 11 of the first embodiment in that a base portion 27 having an engaging protrusion 26 and an outer skin layer 28 are provided. It is the composition. The remaining configuration is the same as in the first embodiment.

係合突起２６は係合突起１５と同様に、ベース部２７の上面２７ａからベース部２７の厚み方向に沿って突出する円柱形状であるが、係合突起２６の側面２６ａには外方に突出する環状の抜止めリブ２６ｂが形成されている。 Similar to the engagement protrusion 15, the engagement protrusion 26 has a cylindrical shape protruding from the upper surface 27 a of the base portion 27 along the thickness direction of the base portion 27, but protrudes outward on the side surface 26 a of the engagement protrusion 26. An annular retaining rib 26b is formed.

外皮層２８は外皮層１４と同様に、ベース部２７における係合突起２６の端面を除く上面２７ａを覆っており、つまり係合突起２６における側面２６ａの抜止めリブ２６ｂも含めて覆っている。 Similar to the outer skin layer 14, the outer skin layer 28 covers the upper surface 27 a excluding the end face of the engagement protrusion 26 in the base portion 27, that is, covers the retaining rib 26 b on the side face 26 a of the engagement protrusion 26.

第５実施形態の異方導電性コネクタ２５は第１実施形態の異方導電性コネクタ１１と同様の作用、効果を発揮するほか、さらに次の作用、効果を発揮する。すなわち異方導電性コネクタ２５によれば、係合突起２６が抜止めリブ２６ｂを有するため、異方導電性コネクタ２５が筐体５の取付凹部５ａから容易には脱落し難くなり、取付凹部５ａに取付けた異方性導電コネクタ２５の取付姿勢に拘わらず機器を組立てることができ、製造上の利便性を高めることができる。 The anisotropic conductive connector 25 of the fifth embodiment exhibits the same actions and effects as the anisotropic conductive connector 11 of the first embodiment, and further exhibits the following actions and effects. That is, according to the anisotropic conductive connector 25, since the engaging protrusion 26 has the retaining rib 26b, the anisotropic conductive connector 25 is not easily detached from the mounting recess 5a of the housing 5, and the mounting recess 5a. The device can be assembled regardless of the mounting orientation of the anisotropic conductive connector 25 attached to the device, and the convenience in manufacturing can be improved.

第６実施形態〔図８〕：第６実施形態の異方導電性コネクタ２９が第１実施形態の異方導電性コネクタ１１と異なるのは、係合突起３０を有するベース部３１と外皮層３２の構成である。残余の構成は第１実施形態と同じである。 Sixth Embodiment [FIG. 8] The anisotropic conductive connector 29 of the sixth embodiment is different from the anisotropic conductive connector 11 of the first embodiment in that a base portion 31 having an engaging protrusion 30 and an outer skin layer 32 are provided. It is the composition. The remaining configuration is the same as in the first embodiment.

係合突起３０は係合突起１５と同様に、ベース部３１の上面３１ａからベース部３１の厚み方向に沿って突出する円柱形状であるが、係合突起３０の端面では導通部１３の端部（導電電極面１３ａ）の周囲に段差面３０ｂが形成され、この段差面３０ｂは後述する外皮層３２が覆っている。つまり、導電電極面１３ａを除く係合突起３０の端面に外皮層３２が設けられている。 Like the engagement protrusion 15, the engagement protrusion 30 has a cylindrical shape protruding from the upper surface 31 a of the base portion 31 along the thickness direction of the base portion 31. A step surface 30b is formed around (conductive electrode surface 13a), and this step surface 30b is covered with an outer skin layer 32 described later. That is, the outer skin layer 32 is provided on the end surface of the engagement protrusion 30 except for the conductive electrode surface 13a.

外皮層３２は絶縁性の樹脂フィルムで形成されており、ベース部３０の上面３０ａ、係合突起３０の端面３０ａ、係合突起３０の段差面３０ｂを覆っている。 The outer skin layer 32 is formed of an insulating resin film, and covers the upper surface 30 a of the base portion 30, the end surface 30 a of the engagement protrusion 30, and the step surface 30 b of the engagement protrusion 30.

第６実施形態の異方導電性コネクタ２９は第１実施形態の異方導電性コネクタ１１と同様の作用、効果を発揮するほか、さらに次の作用、効果を発揮する。すなわち異方導電性コネクタ２９によれば、係合突起３０の端面に実質的に導通部１３のみを露出させることができるので、集積度の高い回路基板の回路電極や端子との接続であっても、他の配線や電極等と接触させずに目的の回路電極や端子にのみ導通接触させることができる。 The anisotropic conductive connector 29 of the sixth embodiment exhibits the same operations and effects as the anisotropic conductive connector 11 of the first embodiment, and further exhibits the following operations and effects. That is, according to the anisotropic conductive connector 29, only the conductive portion 13 can be substantially exposed at the end face of the engaging protrusion 30, so that connection with circuit electrodes and terminals of a highly integrated circuit board is possible. In addition, it is possible to make conductive contact only with a target circuit electrode or terminal without making contact with other wirings or electrodes.

各実施形態の変形例：以上の実施形態においては、異方導電性コネクタ１１，１７，２２，２３，２５，２９の上面、下面以外の面、即ち、左側面、右側面、正面、背面について、外皮層で覆うことができる。こうした面からも障害源磁性導電体１６が表面に露出することあるからである。 Modified example of each embodiment : In the above embodiments, the surfaces other than the upper surface and the lower surface of the anisotropic conductive connectors 11, 17, 22, 23, 25, 29, that is, the left side surface, the right side surface, the front surface, and the back surface. Can be covered with an outer skin layer. This is because the failure source magnetic conductor 16 may be exposed on the surface from such a surface.

各実施形態の異方導電性コネクタ１１，１７，２２，２３について、導通部１３の軸交差方向における外皮層１４を含む係合突起１５の長さＬ１（即ち直径）を取付凹部５ａの開口幅Ｌ２よりも長くすることができる（図９（Ａ））。このようにすれば、機器の取付凹部５ａに係合突起１５が圧入され、この圧入によって係合突起１５の内部に導通部１３として配向している磁性導電体３どうしを導通部１３の軸交差方向でより密着させることができる（図９（Ｂ））。また、この圧入を利用すれば、機器における取付凹部５ａの寸法公差や接続対象部材間の間隔公差に適応しつつ信頼性の高い確実な導電接続を実現できる。 For the anisotropic conductive connectors 11, 17, 22, and 23 of each embodiment, the length L1 (that is, the diameter) of the engagement protrusion 15 including the outer skin layer 14 in the axis crossing direction of the conduction portion 13 is the opening width of the attachment recess 5a. It can be longer than L2 (FIG. 9A). In this way, the engaging projection 15 is press-fitted into the mounting recess 5a of the device, and the magnetic conductors 3 oriented as the conducting portion 13 inside the engaging projection 15 by this press-fitting are crossed by the axis of the conducting portion 13. It can be more closely attached in the direction (FIG. 9B). Further, if this press-fitting is used, reliable and reliable conductive connection can be realized while adapting to the dimensional tolerance of the mounting recess 5a and the interval tolerance between the members to be connected.

実施例、比較例に基づき本発明をさらに詳細に説明する。 The present invention will be described in more detail based on examples and comparative examples.

１．異方導電性コネクタの製造
実施例、比較例となる異方導電性コネクタを以下のとおり製造した。 1. Production Examples of Anisotropic Conductive Connectors, Anisotropic Conductive Connectors as Comparative Examples were produced as follows.

実施例１：ポリアルキルアルケニルシロキサン系シリコーンゴム（数平均分子量：６０,０００〜８０，０００、粘度：１５Ｐａ・ｓ（２０℃））１００重量部に対して、直径３０μｍの銀めっきニッケル粒子を磁性導電体(3)として３０重量部配合した液状混合物を、強磁性体ピンが設けられたアルミニウム金型に注入した。この金型を磁界中で５分放置し、磁性導電体(3)を配向させ、１５０℃で２分間加熱し、液状混合物を架橋させた。導電電極面(13a,13b)と下側面全体にマスキングを施し、シリコーン系樹脂（東レ・ダウコーニング社製「ＰＲＫ−３」（商品名））を層厚が５μｍになるようにスプレーコートにより塗布し、外皮層(14)を形成した。最後にマスキングを除去して、第１実施形態で示した試料１の異方導電性コネクタ(11)を製造した。この異方導電性コネクタ(11)は、外皮層(14)を除いた高さ方向の最長長さが１．６ｍｍ、係合突起(15)は、外皮層(14)部分を除いた直径が１ｍｍでベース部(12)の上面(12a)からの突出高さが０．８ｍｍの円柱形である。また、ベース部(12)の硬度はＡ１５、外皮層(14)の硬度もＡ１５である。 Example 1 : Polyalkylalkenylsiloxane-based silicone rubber (number average molecular weight: 60,000 to 80,000, viscosity: 15 Pa · s (20 ° C.)) 100 parts by weight of silver-plated nickel particles having a diameter of 30 μm A liquid mixture containing 30 parts by weight as the conductor (3) was poured into an aluminum mold provided with a ferromagnetic pin. The mold was left in a magnetic field for 5 minutes to orient the magnetic conductor (3) and heated at 150 ° C. for 2 minutes to crosslink the liquid mixture. Mask the entire conductive electrode surface (13a, 13b) and lower surface, and apply a silicone resin (“PRK-3” (trade name) manufactured by Toray Dow Corning) by spray coating so that the layer thickness is 5 μm. The outer skin layer (14) was formed. Finally, the masking was removed, and the anisotropic conductive connector (11) of Sample 1 shown in the first embodiment was manufactured. This anisotropic conductive connector (11) has a maximum length of 1.6 mm in the height direction excluding the outer skin layer (14), and the engagement protrusion (15) has a diameter excluding the outer skin layer (14) portion. It has a cylindrical shape with a projection height of 0.8 mm from the upper surface (12a) of the base portion (12) at 1 mm. Further, the hardness of the base portion (12) is A15, and the hardness of the outer skin layer (14) is also A15.

実施例２：外皮層(14)の厚さを２０μｍに変更した以外は実施例１と同様とした試料２の異方導電性コネクタ(11)を製造した。 Example 2 An anisotropic conductive connector (11) of Sample 2 was manufactured in the same manner as in Example 1 except that the thickness of the outer skin layer (14) was changed to 20 μm.

実施例３：外皮層(14)の厚さを８０μｍに変更した以外は実施例１と同様とした試料３の異方導電性コネクタ(11)を製造した。 Example 3 An anisotropic conductive connector (11) of Sample 3 was manufactured in the same manner as in Example 1 except that the thickness of the outer skin layer (14) was changed to 80 μm.

実施例４：マスキングを導電電極面(13a,13b)に施した以外は、実施例２と同様の方法で成形し、導電電極面(13a,13b)を除く全ての面に２０μｍの層厚の外皮層(14,20)を設けた第３実施形態で示す試料４の異方導電性コネクタ(22)を製造した。 Example 4 : Except that masking was applied to the conductive electrode surfaces (13a, 13b), molding was performed in the same manner as in Example 2, and a layer thickness of 20 μm was formed on all surfaces except the conductive electrode surfaces (13a, 13b). An anisotropic conductive connector (22) of Sample 4 shown in the third embodiment provided with an outer skin layer (14, 20) was manufactured.

実施例５：実施例１で用いた外皮層(14)用シリコーン系樹脂にシリカを加えて用い、厚さ９０μｍ、硬度Ａ５０の外皮層(14)を形成した以外は実施例１と同様とした試料５の異方導電性コネクタ(11)を製造した。 Example 5 : Same as Example 1 except that silica was added to the silicone resin for the outer skin layer (14) used in Example 1 to form an outer skin layer (14) having a thickness of 90 μm and a hardness of A50. An anisotropic conductive connector (11) of Sample 5 was manufactured.

実施例６：実施例１で用いた外皮層(14)用シリコーン系樹脂にシリカを加えて用い、厚さ４０μｍ、硬度Ａ８０の外皮層(14)を形成した以外は実施例１と同様とした試料６の異方導電性コネクタ(11)を製造した。 Example 6 : Same as Example 1 except that silica was added to the silicone resin for the skin layer (14) used in Example 1 to form a skin layer (14) having a thickness of 40 μm and a hardness of A80. An anisotropic conductive connector (11) of Sample 6 was manufactured.

実施例７：樹脂フィルムを用いて外皮層(14)とする第１実施形態の構造をした試料７の異方導電性コネクタ(11)を製造した。即ち、厚さ５０μｍのポリエステル樹脂フィルム（東レ製、ルミラーＳ１０）をベース部(12)の上面形状と同形状に絞り加工し、この樹脂フィルムを金型にインサートした。その後、実施例１と同様に、液状混合物を金型に注入し、硬化させた。こうして、磁性導電体(3)が配向した導電電極面(13a,13b)を有し、ベース部(12)の上面(12a)と係合突起(15)の側面(15a)とが樹脂フィルムでなる外皮層(14)で覆われた試料７の異方導電性コネクタ(11)を製造した。 Example 7 : An anisotropic conductive connector (11) of Sample 7 having the structure of the first embodiment using a resin film as an outer skin layer (14) was manufactured. That is, a 50 μm thick polyester resin film (Toray, Lumirror S10) was drawn into the same shape as the top surface of the base portion (12), and this resin film was inserted into a mold. Thereafter, in the same manner as in Example 1, the liquid mixture was poured into a mold and cured. In this way, the magnetic conductor (3) has the conductive electrode surface (13a, 13b) oriented, and the upper surface (12a) of the base portion (12) and the side surface (15a) of the engagement protrusion (15) are resin films. An anisotropic conductive connector (11) of Sample 7 covered with the outer skin layer (14) was manufactured.

比較例１：外皮層(14)を設けないこと以外は実施例１と同様にして、外皮層(14)のない試料８の異方導電性コネクタを製造した。 Comparative Example 1 An anisotropic conductive connector of Sample 8 without the outer skin layer (14) was produced in the same manner as in Example 1 except that the outer skin layer (14) was not provided.

比較例２：外皮層(14)の厚さを２μｍにした以外は、実施例１と同様の方法で試料９の異方導電性コネクタを製造した。 Comparative Example 2 An anisotropic conductive connector of Sample 9 was produced in the same manner as in Example 1 except that the thickness of the outer skin layer (14) was 2 μm.

比較例３：実施例７で示す試料７の異方導電性コネクタ(11)の製造において、係合突起(15)の側面(15a)に樹脂フィルムでなる外皮層を形成しない以外は実施例７の試料７と同様にして、試料１０の異方導電性コネクタを製造した。 Comparative Example 3 In the manufacture of the anisotropic conductive connector (11) of the sample 7 shown in Example 7, Example 7 except that the outer skin layer made of a resin film is not formed on the side surface (15a) of the engaging protrusion (15). An anisotropic conductive connector of Sample 10 was manufactured in the same manner as Sample 7.

２．異方導電性コネクタの評価
上記実施例、比較例で製造した試料１〜試料１０の各異方導電性コネクタのいくつかについて、その絶縁特性、耐荷重性を以下の方法で測定し評価した。 2. Evaluation of anisotropic conductive connector Some of the anisotropic conductive connectors of Samples 1 to 10 manufactured in the above-mentioned Examples and Comparative Examples were measured and evaluated by the following methods.

「絶縁特性」；試料１〜試料４、試料７〜試料１０の異方導電性コネクタについて絶縁性試験Ａ〜絶縁性試験Ｃを行った。絶縁性試験Ａは、異方導電性コネクタを導電性試験板上に固定し、係合突起(15)の側面(15a)に露出する磁性導電体(3)でなる分岐磁性導電体(16b)に、プローブの一方を直接又は外皮層(14)を介して当てる一方、プローブの他方を導電性試験板に当てて、５０Ｖの電圧を印加して流れる電流値を測定して絶縁性の有無の判定を行った。 “Insulation characteristics”: Insulation test A to insulation test C were performed on the anisotropic conductive connectors of Samples 1 to 4 and Samples 7 to 10. Insulation test A consists of a branched magnetic conductor (16b) composed of a magnetic conductor (3) that is fixed on a conductive test plate and exposed on the side surface (15a) of the engaging protrusion (15). In addition, one of the probes is applied directly or through the outer skin layer (14), while the other probe is applied to the conductive test plate, and a current value of 50 V is applied to measure the flowing current value. Judgment was made.

絶縁性試験Ｂは、異方導電性コネクタを導電性試験板上に固定し、ベース部(12)の上面(12a)に露出する磁性導電体(3)でなる不正配向磁性導電体(16c)に、プローブの一方を直接又は外皮層(14)を介して当てる一方、プローブの他方を導電性試験板に当てて、５０Ｖの電圧を印加して流れる電流値を測定して絶縁性の有無の判定を行った。 Insulation test B is an improperly oriented magnetic conductor (16c) comprising a magnetic conductor (3) exposed on the upper surface (12a) of the base portion (12), with an anisotropic conductive connector fixed on a conductive test plate. In addition, one of the probes is applied directly or through the outer skin layer (14), while the other probe is applied to the conductive test plate, and a current value of 50 V is applied to measure the flowing current value. Judgment was made.

絶縁性試験Ｃは、プローブの両方をそれぞれベース部(12)の上面(12a)に露出する磁性導電粒子(3)でなる未配向磁性導電体(16a)に、直接又は外皮層(14)を介して当てて、５０Ｖの電圧を印加して流れる電流値を測定して絶縁性の有無の判定を行った。表１に絶縁性試験Ａ〜絶縁性試験Ｃの判定結果を示す。絶縁性が保たれ電流が流れなかったものを「○」、電流が流れたものを「×」と判定した。 Insulation test C is performed by directly or directly applying the outer skin layer (14) to the unoriented magnetic conductor (16a) made of magnetic conductive particles (3) exposing both the probes on the upper surface (12a) of the base portion (12). Then, the current value flowing by applying a voltage of 50 V was measured to determine the presence or absence of insulation. Table 1 shows the determination results of the insulation tests A to C. The case where insulation was maintained and no current flowed was judged as “◯”, and the case where current flowed was judged as “x”.

「荷重特性」；試料５、試料６、試料８の各異方導電性コネクタを回路基板(6b)上に載置し、その厚さ方向（図の上下方向）に所定割合だけ圧縮した際の圧縮荷重を荷重測定器を用いて測定した。表２にその結果を示す。 “Load characteristics”: When the anisotropic conductive connectors of Sample 5, Sample 6, and Sample 8 are placed on the circuit board (6b) and compressed by a predetermined ratio in the thickness direction (vertical direction in the figure) The compressive load was measured using a load measuring device. Table 2 shows the results.

表１で示すように、試料１〜試料４、試料７の異方導電性コネクタ(11)は全ての絶縁性試験において絶縁が確認された。その一方で、試料８の異方導電性コネクタは、全ての絶縁性試験において短絡してしまった。また、試料９の異方導電性コネクタも外皮層を備えているにもかかわらず全ての絶縁性試験において短絡してしまった。試料１０の異方導電性コネクタは、絶縁性試験Ａにおいて短絡してしまった。 As shown in Table 1, the anisotropic conductive connectors (11) of Samples 1 to 4 and Sample 7 were confirmed to be insulated in all the insulation tests. On the other hand, the anisotropic conductive connector of Sample 8 was short-circuited in all the insulation tests. In addition, the anisotropic conductive connector of Sample 9 was short-circuited in all the insulation tests despite having the outer skin layer. The anisotropic conductive connector of Sample 10 was short-circuited in the insulation test A.

これらの結果から、試料８の異方導電性コネクタは外皮層を備えていないため短絡し、試料９の異方導電性コネクタは外皮層を備えているものの、その層厚が２μｍと薄いため、絶縁が不十分となってしまったものと思われれる。また、試料１０の異方導電性コネクタは係合突起(15)の側面(15a)に外皮層を備えていないため、絶縁性試験Ａにおいて短絡してしまったものと思われる。これらの例に対し、試料１〜試料４、試料７の異方導電性コネクタ(11)は、導電電極面(13a,13b)以外が厚さ５μｍ以上の外皮層(14)で被覆されているため、絶縁が確保された。 From these results, the anisotropic conductive connector of sample 8 is short-circuited because it does not have a skin layer, and the anisotropic conductive connector of sample 9 has a skin layer, but its layer thickness is as thin as 2 μm. It seems that the insulation has become insufficient. Further, the anisotropic conductive connector of the sample 10 does not have a skin layer on the side surface (15a) of the engaging protrusion (15), so it is considered that the short circuit occurred in the insulation test A. In contrast to these examples, the anisotropic conductive connectors (11) of Samples 1 to 4 and Sample 7 are covered with an outer skin layer (14) having a thickness of 5 μm or more except for the conductive electrode surfaces (13a, 13b). Therefore, insulation was ensured.

表２で示すように、試料５、試料６の異方導電性コネクタ(11)は、外皮層を設けていない試料８の異方導電性コネクタに比べて、圧縮率が２０％の場合も、圧縮率が３０％の場合もともに圧縮荷重が高くなる。また、試料８の異方導電性コネクタは形状保持性が劣り強く押圧すると潰れてしまい、また粘着性がありべたつき感を有するのに比べて、試料５、試料６の異方導電性コネクタ(11)は、ベース部(12)の材質・硬度を試料８と同じとしながらも、形状保持性を有しており、また、粘着性もほとんどなかった。磁性導電体の連鎖的配向にて導通部を形成する異方導電性コネクタは、導通部の軸方向に沿って圧縮荷重を加え導通部を圧縮することで抵抗値が次第に低下し、一定の圧縮荷重を超え圧縮代が一定より大きくなると抵抗値が飽和し、この飽和状態で最も良好な導通接続が得られる。したがって導通抵抗の増加による導電性の低下は、異方導電性コネクタにおける圧縮代が小さくなるような圧縮荷重の低下により生じる。このため、例えば異方導電性コネクタを介在させる回路基板間の間隔が設計上の公差よりも大きかった場合や、実装後に機器が受けた衝撃により回路基板間の間隔が広がってしまう場合のように、異方導電性コネクタにおける圧縮荷重が低下し圧縮代が小さくなるように変化した場合等であっても導通が得られることが好ましい。試料５、試料６の異方導電性コネクタ(11)は、ベース部(12)の材料を試料８のものと同じとしながらも、所定の硬度と層厚の外皮層(14)を設けることで、ベース部(12)の低荷重性を活かしつつ、機器への組付時の取扱性を向上させる形状保持性も付与することができ、さらに粘着性を低下できることが分かる。そして、試料６のように外皮層(14)の硬度を高くすれば薄い外皮層(14)で形状保持性を高めることができ、異方導電性コネクタ(11)を薄型化・小型化できることも分かる。 As shown in Table 2, the anisotropic conductive connectors (11) of Sample 5 and Sample 6 are 20% compressible compared to the anisotropic conductive connector of Sample 8 without the outer skin layer. In both cases where the compression ratio is 30%, the compression load increases. In addition, the anisotropic conductive connector of sample 8 is inferior in shape retention and is crushed when pressed strongly, and the anisotropic conductive connector of sample 5 and sample 6 (11 ) Had the same shape and hardness of the base part (12) as the sample 8, but had shape retention and almost no adhesiveness. An anisotropic conductive connector that forms a conducting part in a chained orientation of magnetic conductors has a resistance value that gradually decreases by compressing the conducting part by applying a compressive load along the axial direction of the conducting part. When the load exceeds the load and the compression allowance is greater than a certain value, the resistance value is saturated. Therefore, a decrease in conductivity due to an increase in conduction resistance is caused by a decrease in compression load that reduces the compression allowance in the anisotropic conductive connector. For this reason, for example, when the distance between circuit boards interposing anisotropic conductive connectors is larger than the design tolerance, or when the distance between circuit boards widens due to the impact received by the device after mounting. It is preferable that continuity is obtained even when the compression load in the anisotropic conductive connector is reduced and the compression allowance is reduced. The anisotropic conductive connectors (11) of the sample 5 and the sample 6 are provided with an outer skin layer (14) having a predetermined hardness and thickness while the material of the base portion (12) is the same as that of the sample 8. It can be seen that, while taking advantage of the low load property of the base portion (12), the shape retainability for improving the handleability when assembling to the device can be imparted, and the adhesiveness can be further reduced. If the hardness of the outer skin layer (14) is increased as in the sample 6, shape retention can be improved by the thinner outer skin layer (14), and the anisotropic conductive connector (11) can be made thinner and smaller. I understand.

第１実施形態による異方導電性コネクタの平面図。The top view of the anisotropically conductive connector by 1st Embodiment. 図１のＳＡ−ＳＡ線断面図。FIG. 3 is a sectional view taken along line SA-SA in FIG. 1. 第１実施形態の異方導電性コネクタにおける固定方法の説明図。Explanatory drawing of the fixing method in the anisotropically conductive connector of 1st Embodiment. 第２実施形態による異方導電性コネクタの図２相当断面図。FIG. 3 is a cross-sectional view corresponding to FIG. 2 of an anisotropic conductive connector according to a second embodiment. 第３実施形態による異方導電性コネクタの図２相当断面図。FIG. 2 is a cross-sectional view corresponding to FIG. 2 of an anisotropic conductive connector according to a third embodiment. 第４実施形態による異方導電性コネクタの図２相当断面図。Sectional drawing equivalent to FIG. 2 of the anisotropically conductive connector by 4th Embodiment. 第５実施形態による異方導電性コネクタの図２相当断面図。Sectional drawing equivalent to FIG. 2 of the anisotropically conductive connector by 5th Embodiment. 第６実施形態による異方導電性コネクタの図２相当断面図。Sectional drawing equivalent to FIG. 2 of the anisotropically conductive connector by 6th Embodiment. 各実施形態の異方導電性コネクタにおける別な固定方法の説明図であり、分図（Ａ）が固定前の断面図、分図（Ｂ）が固定時の断面図。It is explanatory drawing of another fixing method in the anisotropically conductive connector of each embodiment, A sectional view (A) is a sectional view before fixing, and a sectional view (B) is a sectional view at the time of fixing. 従来の異方導電性コネクタの断面図。Sectional drawing of the conventional anisotropically conductive connector.

符号の説明Explanation of symbols

１異方導電性コネクタ（従来例）
２ベース部
３磁性導電体
３ａ未配向磁性導電体
３ｂ分岐磁性導電体
３ｃ不正配向磁性導電体
４導通部
５筐体
５ａ取付凹部
６回路基板
６ａ上側回路基板
６ｂ下側回路基板
７回路電極
７ａ上側回路電極
７ｂ下側回路電極
８回路
１１異方導電性コネクタ（第１実施形態）
１２ベース部
１２ａ上面
１２ｂ下面
１３導通部
１３ａ導電電極面
１３ｂ導電電極面
１４外皮層
１５係合突起
１５ａ側面
１６障害源磁性導電体
１６ａ未配向磁性導電体
１６ｂ分岐磁性導電体
１６ｃ不正配向磁性導電体
１７異方導電性コネクタ（第２実施形態）
１８ベース部
１８ａ上面
１８ｂ下面
１９外皮層
２０外皮層
２１突起
２２異方導電性コネクタ（第３実施形態）
２３異方導電性コネクタ（第４実施形態）
２４ベース部
２４ａ上面
２４ｂ下面
２５異方導電性コネクタ（第５実施形態）
２６係合突起
２６ａ側面
２６ｂ抜止めリブ
２７ベース部
２７ａ上面
２７ｂ下面
２８外皮層
２９異方導電性コネクタ（第６実施形態）
３０係合突起
３０ａ側面
３０ｂ段差面
３１ベース部
３１ａ上面
３１ｂ下面
３２外皮層 1 Anisotropic conductive connector (conventional example)
2 Base part 3 Magnetic conductor 3a Unoriented magnetic conductor 3b Branched magnetic conductor 3c Incorrectly oriented magnetic conductor 4 Conducting part 5 Housing 5a Mounting recess 6 Circuit board 6a Upper circuit board 6b Lower circuit board 7 Circuit electrode 7a Upper side Circuit electrode 7b Lower circuit electrode 8 Circuit 11 Anisotropic conductive connector (first embodiment)
12 Base portion 12a Upper surface 12b Lower surface 13 Conductive portion 13a Conductive electrode surface 13b Conductive electrode surface 14 Outer layer 15 Engaging protrusion 15a Side surface 16 Obstruction source magnetic conductor 16a Unoriented magnetic conductor 16b Branched magnetic conductor 16c Incorrectly oriented magnetic conductor 17 Anisotropic Conductive Connector (Second Embodiment)
18 Base part 18a Upper surface 18b Lower surface 19 Outer layer 20 Outer layer 21 Projection 22 Anisotropic conductive connector (third embodiment)
23 Anisotropic Conductive Connector (Fourth Embodiment)
24 base portion 24a upper surface 24b lower surface 25 anisotropic conductive connector (fifth embodiment)
26 engaging protrusion 26a side surface 26b retaining rib 27 base portion 27a upper surface 27b lower surface 28 outer skin layer 29 anisotropic conductive connector (sixth embodiment)
30 engaging protrusion 30a side surface 30b stepped surface 31 base portion 31a upper surface 31b lower surface 32 outer skin layer

Claims

絶縁性のゴム状弾性体でなるベース部と、該ベース部の厚み方向に貫通するように数珠繋ぎに配向する磁性導電体でなる導通部と、を備えており、導通部の一端と他端がそれぞれ接続対象部材と押圧接触することで接続対象部材どうしを相互に導通接続する異方導電性コネクタにおいて、
ベース部に、導通部の一端が露出する導電電極面を有し、導通部が接続する接続対象部材に設けた取付凹部と凹凸係合する係合突起と、導通部として配向されずにベース部の外面に残存し露出する障害源磁性導電体を被覆する外皮層と、を備えることを特徴とする異方導電性コネクタ。 A base portion made of an insulating rubber-like elastic body, and a conduction portion made of a magnetic conductor oriented in a daisy chain so as to penetrate in the thickness direction of the base portion. In the anisotropic conductive connectors that connect and connect the connection target members to each other by pressing contact with the connection target members,
The base portion has a conductive electrode surface at which one end of the conductive portion is exposed, an engagement protrusion provided on the connection target member to which the conductive portion is connected, and an engaging protrusion that engages with the concave and convex portions, and the base portion is not oriented as the conductive portion. An anisotropic conductive connector comprising: an outer skin layer that covers an obstacle-source magnetic conductor that remains and is exposed on the outer surface of the connector.

係合突起の側面に外皮層を備える請求項１記載の異方導電性コネクタ。 The anisotropic conductive connector according to claim 1, further comprising an outer skin layer on a side surface of the engaging protrusion.

外皮層の硬度がベース部の硬度よりも高く、該外皮層がベース部の変形を防ぐ形状保持層である請求項１又は請求項２記載の異方導電性コネクタ。 The anisotropic conductive connector according to claim 1 or 2, wherein the hardness of the outer skin layer is higher than the hardness of the base portion, and the outer skin layer is a shape retaining layer that prevents deformation of the base portion.

外皮層がベース部と同材質でなる請求項１〜請求項３何れか１項記載の異方導電性コネクタ。 The anisotropic conductive connector according to claim 1, wherein the outer skin layer is made of the same material as the base portion.

外皮層が樹脂フィルムでなる請求項１〜請求項４何れか１項記載の異方導電性コネクタ。 The anisotropic conductive connector according to claim 1, wherein the outer skin layer is made of a resin film.