JP2021184343A - Terminal metal fixtures and connector - Google Patents

Terminal metal fixtures and connector Download PDF

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JP2021184343A
JP2021184343A JP2020089368A JP2020089368A JP2021184343A JP 2021184343 A JP2021184343 A JP 2021184343A JP 2020089368 A JP2020089368 A JP 2020089368A JP 2020089368 A JP2020089368 A JP 2020089368A JP 2021184343 A JP2021184343 A JP 2021184343A
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contact
substrate
contact portion
circuit board
fulcrum
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JP6801936B1 (en
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修司 山崎
Shuji Yamazaki
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Sumiko Tec Co Ltd
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Abstract

To combine low insertion force at the time of insertion of a substrate and improvement in conduction reliability thereafter.SOLUTION: An elastic contact piece 23 of a terminal metal fixture 20 attached to a connector into which a substrate 2 is inserted is configured to include: a first contact part 41 located at a front side of a substrate insertion direction; a second contact part 42 located at a rear side of the substrate insertion direction; a first fulcrum part 45 serving as a fulcrum of elastic deformation when the first contact part 41 is depressed by the substrate 2; and a second fulcrum part 48 serving as a fulcrum of elastic deformation when the second contact part 42 is depressed by the substrate 2. The first fulcrum part 45 is configured to move the first contact part 41 in a direction away from the substrate 2 when the first contact part 41 is depressed by the substrate 2. The second fulcrum part 48 is configured to move the second contact part 42 in the direction away from the substrate 2 and move the first contact part 41 in a direction approaching the substrate 2 when the second contact part 42 is depressed by the substrate 2.SELECTED DRAWING: Figure 2

Description

本発明は、端子金具およびコネクタに関する。 The present invention relates to terminal fittings and connectors.

電子機器で用いられるコネクタの一種にカードエッジコネクタがある。カードエッジコネクタは、回路基板を差し込んで使用するソケットタイプのコネクタである。カードエッジコネクタにおける端子金具は、回路基板の挿入によって押圧される弾性接触片を備えており、弾性接触片が回路基板の面上に配された電極と接触することで、電極との導通を確保するように構成されている（例えば、特許文献１参照）。 A card edge connector is a type of connector used in electronic devices. The card edge connector is a socket type connector used by inserting a circuit board. The terminal fitting in the card edge connector has an elastic contact piece that is pressed by inserting the circuit board, and the elastic contact piece contacts the electrode arranged on the surface of the circuit board to ensure continuity with the electrode. (See, for example, Patent Document 1).

特開２０１１ー１０８５９５号公報Japanese Unexamined Patent Publication No. 2011-108595

カードエッジコネクタは、基板挿入時の低挿入力化と、基板挿入後における導通（電極に対する弾性接触片の接触）の信頼性向上と、の両立が求められる。ただし、これらは互いに相反する事項であり、例えば、導通の信頼性向上を図るべく電極に対する弾性接触片の接触力を大きくすると、これにより基板挿入力の増大を招いてしまうおそれがある。特に、基板挿入力は、基板挿入時に回路基板の端縁が最初に弾性接触片に当接した際の、その弾性接触片による反力に大きな影響を受ける。 The card edge connector is required to have both a low insertion force when the substrate is inserted and an improvement in the reliability of conduction (contact of the elastic contact piece with the electrode) after the substrate is inserted. However, these are mutually contradictory matters, and for example, if the contact force of the elastic contact piece with respect to the electrode is increased in order to improve the reliability of conduction, this may lead to an increase in the substrate insertion force. In particular, the substrate insertion force is greatly affected by the reaction force of the elastic contact piece when the edge of the circuit board first abuts on the elastic contact piece when the substrate is inserted.

本発明は、基板挿入時の低挿入力化と基板挿入後における導通信頼性向上とを両立させることを可能にする技術の提供を目的とする。 An object of the present invention is to provide a technique capable of achieving both a low insertion force when inserting a substrate and an improvement in continuity reliability after inserting a substrate.

本発明の一態様によれば、
基板が挿入されるコネクタに装着され、前記基板と前記コネクタとの嵌合状態で当該基板の面上に配された電極と接触する弾性接触片を備える端子金具であって、
前記弾性接触片は、
前記基板の挿入方向の前方側に位置する第１接点部と、
前記基板の挿入方向の後方側に位置する第２接点部と、
前記第１接点部が前記基板に押圧されたときの弾性変形の支点となる第１支点部と、
前記第２接点部が前記基板に押圧されたときの弾性変形の支点となる第２支点部と、
を有し、
前記第１支点部と前記第２支点部とが異なる位置に配されており、
前記第１支点部は、前記第１接点部が前記基板に押圧されると、前記第１接点部を前記基板から離れる方向に向けて移動させるように構成され、
前記第２支点部は、前記第２接点部が前記基板に押圧されると、前記第２接点部を前記基板から離れる方向に向けて移動させるとともに、前記第１接点部を前記基板に近づく方向に向けて移動させるように構成される
端子金具が提供される。 According to one aspect of the invention
A terminal fitting having an elastic contact piece attached to a connector into which a substrate is inserted and in contact with an electrode arranged on the surface of the substrate in a fitted state between the substrate and the connector.
The elastic contact piece is
The first contact portion located on the front side in the insertion direction of the substrate,
The second contact portion located on the rear side in the insertion direction of the substrate,
The first fulcrum portion, which is the fulcrum of elastic deformation when the first contact portion is pressed against the substrate,
The second fulcrum portion, which is the fulcrum of elastic deformation when the second contact portion is pressed against the substrate,
Have,
The first fulcrum portion and the second fulcrum portion are arranged at different positions.
The first fulcrum portion is configured to move the first contact portion in a direction away from the substrate when the first contact portion is pressed against the substrate.
When the second contact portion is pressed against the substrate, the second fulcrum portion moves the second contact portion in a direction away from the substrate and a direction in which the first contact portion approaches the substrate. Terminal fittings configured to move towards are provided.

本発明によれば、基板挿入時の低挿入力化と基板挿入後における導通信頼性向上とを両立させることが実現可能となる。 According to the present invention, it is possible to achieve both a low insertion force when inserting a substrate and an improvement in conduction reliability after inserting a substrate.

本発明の一実施形態に係るカードエッジコネクタの全体構成を示す斜視図である。It is a perspective view which shows the whole structure of the card edge connector which concerns on one Embodiment of this invention. 本発明の一実施形態に係る端子金具の構成例を示す側断面図である。It is a side sectional view which shows the structural example of the terminal metal fitting which concerns on one Embodiment of this invention. 本発明の一実施形態に係る端子金具の構成例を示す斜視図である。It is a perspective view which shows the structural example of the terminal metal fitting which concerns on one Embodiment of this invention. 本発明の一実施形態に係る端子金具が備える弾性接触片の処理動作を模式的に示す説明図である。It is explanatory drawing which shows typically the processing operation of the elastic contact piece provided with the terminal metal fitting which concerns on one Embodiment of this invention. 回路基板の挿入力と弾性接触片の接触力との関係の一具体例を示す説明図である。It is explanatory drawing which shows a specific example of the relationship between the insertion force of a circuit board and the contact force of an elastic contact piece.

以下、本発明の一実施形態に係る端子金具およびコネクタについて、図面を参照しながら説明する。ここでは、カードエッジコネクタおよびこれに用いられる端子金具を例に挙げて以下の説明を行う。 Hereinafter, the terminal fittings and the connector according to the embodiment of the present invention will be described with reference to the drawings. Here, the following description will be given by taking a card edge connector and a terminal fitting used for the card edge connector as an example.

（１）カードエッジコネクタの全体構成
まず、本実施形態に係るカードエッジコネクタの全体構成について簡単に説明する。
図１は、カードエッジコネクタの全体構成を示す斜視図である。 (1) Overall Configuration of Card Edge Connector First, the overall configuration of the card edge connector according to the present embodiment will be briefly described.
FIG. 1 is a perspective view showing the overall configuration of the card edge connector.

カードエッジコネクタ１は、エッジコネクタソケットまたはスロットとも呼ばれるもので、端縁近傍に電極部（電気接点）が形成された回路基板２と対で用いられる雌型のコネクタである。このようなカードエッジコネクタ１は、回路基板２に直接嵌合することになるので、構成の複雑化や製品コスト低減等を図る上で非常に有用なものとなる。 The card edge connector 1 is also called an edge connector socket or slot, and is a female connector used as a pair with a circuit board 2 having an electrode portion (electric contact) formed in the vicinity of the edge. Since such a card edge connector 1 is directly fitted to the circuit board 2, it is very useful for complicating the configuration and reducing the product cost.

ここで、カードエッジコネクタ１の嵌合相手となる回路基板２について、簡単に説明する。回路基板２は、プリント基板とも呼ばれるもので、絶縁体の板状部材に導体の配線が形成されてなるものである。また、回路基板２には、カードエッジコネクタ１との電気的接続のために、当該回路基板２の配線と導通する複数の電極部（ただし不図示）が当該回路基板２の端縁近傍の面上に並ぶように形成されている。 Here, the circuit board 2 that is the mating partner of the card edge connector 1 will be briefly described. The circuit board 2 is also called a printed circuit board, and is formed by forming conductor wiring on a plate-shaped member of an insulator. Further, on the circuit board 2, a plurality of electrode portions (but not shown) conducting with the wiring of the circuit board 2 are provided on the surface near the edge of the circuit board 2 for electrical connection with the card edge connector 1. It is formed so as to line up on top.

このような回路基板２の嵌合相手となるカードエッジコネクタ１は、大別すると、ハウジング部１０と、そのハウジング部１０に装着される端子金具２０（ただし、図１では不図示）と、を備えて構成されている。 The card edge connector 1 to be fitted to the circuit board 2 is roughly divided into a housing portion 10 and a terminal fitting 20 (however, not shown in FIG. 1) mounted on the housing portion 10. It is configured in preparation.

ハウジング部１０は、絶縁性を有する樹脂材料（例えば、ポリブチレンテレフタレート：ＰＢＴ）の一体成型加工によって形成され、内部に端子金具２０を収容し得るように構成されている。さらに詳しくは、ハウジング部１０は、端子金具２０を内包するための収容空間を有するとともに、その収容空間への端子金具２０の挿入側をリテーナ（ただし不図示）によって封止し得るように構成されている。 The housing portion 10 is formed by integrally molding a resin material having an insulating property (for example, polybutylene terephthalate: PBT), and is configured to accommodate the terminal fitting 20 inside. More specifically, the housing portion 10 is configured to have a storage space for containing the terminal metal fitting 20 and to be able to seal the insertion side of the terminal metal fitting 20 into the storage space by a retainer (not shown). ing.

また、ハウジング部１０は、リテーナ装着側とは反対の側に、回路基板２の端縁と嵌合する嵌合部１０ａを有している。嵌合部１０ａは、回路基板２の端縁を挿入可能な開口を有し、その開口内に端子金具２０が備える弾性接触片４０（ただし、図１では不図示）が位置するようになっている。端子金具２０の弾性接触片４０については、詳細を後述する。 Further, the housing portion 10 has a fitting portion 10a that fits with the end edge of the circuit board 2 on the side opposite to the retainer mounting side. The fitting portion 10a has an opening into which the end edge of the circuit board 2 can be inserted, and the elastic contact piece 40 (however, not shown in FIG. 1) included in the terminal fitting 20 is located in the opening. There is. The details of the elastic contact piece 40 of the terminal fitting 20 will be described later.

このような構成のカードエッジコネクタ１では、嵌合部１０ａに回路基板２の端縁が挿入されると（図中の矢印参照）、回路基板２とハウジング部１０とが嵌合状態になる。そして、回路基板２とハウジング部１０との嵌合状態において、回路基板２の面上に配された各電極と、ハウジング部１０に装着された各端子金具２０の弾性接触片４０とが、互いに接触する。これにより、カードエッジコネクタ１は、回路基板２の各電極とハウジング部１０内の各端子金具２０との導通が確保されることになる。 In the card edge connector 1 having such a configuration, when the edge of the circuit board 2 is inserted into the fitting portion 10a (see the arrow in the figure), the circuit board 2 and the housing portion 10 are in a fitted state. Then, in the fitted state between the circuit board 2 and the housing portion 10, each electrode arranged on the surface of the circuit board 2 and the elastic contact piece 40 of each terminal fitting 20 mounted on the housing portion 10 are attached to each other. Contact. As a result, the card edge connector 1 ensures continuity between each electrode of the circuit board 2 and each terminal fitting 20 in the housing portion 10.

（２）端子金具の構成
次に、本実施形態に係るカードエッジコネクタ１にて用いられる端子金具２０の構成例について説明する。
図２は、本実施形態に係る端子端子の構成例を示す側断面図である。図３は、本実施形態に係る端子端子の構成例を示す斜視図である。 (2) Configuration of Terminal Brackets Next, a configuration example of the terminal fittings 20 used in the card edge connector 1 according to the present embodiment will be described.
FIG. 2 is a side sectional view showing a configuration example of a terminal terminal according to the present embodiment. FIG. 3 is a perspective view showing a configuration example of the terminal terminal according to the present embodiment.

端子金具２０は、導電性を有する所定厚さ（例えば０．２〜０．５ｍｍの範囲内の一定厚さ）の金属板（例えば、銅板もしくは銅合金板、またはこれらのいずれかにめっき処理を施したもの）への抜き加工および曲げ加工によって形成され、カードエッジコネクタ１のハウジング部１０に内装されるものである。つまり、端子金具２０は、回路基板２の嵌合相手となるカードエッジコネクタ１において、そのカードエッジコネクタ１のハウジング部１０に収容されて用いられるように構成されている。なお、ハウジング部１０には、回路基板２における電極部の数と対応する数（すなわち、電極部と同数）の端子金具２０が収容されるようになっている。回路基板２の両面に電極部が配されている場合には、端子金具２０は、同一形状に構成されたものが回路基板２を挟むように対向した状態でハウジング部１０に収容されるようになっている。 The terminal fitting 20 is plated on a conductive metal plate having a predetermined thickness (for example, a constant thickness within the range of 0.2 to 0.5 mm) (for example, a copper plate or a copper alloy plate, or any of these). It is formed by punching and bending (the one that has been applied), and is installed in the housing portion 10 of the card edge connector 1. That is, the terminal fitting 20 is configured to be accommodated and used in the housing portion 10 of the card edge connector 1 in the card edge connector 1 which is the fitting partner of the circuit board 2. The housing portion 10 accommodates a number of terminal fittings 20 corresponding to the number of electrode portions in the circuit board 2 (that is, the same number as the electrode portions). When the electrode portions are arranged on both sides of the circuit board 2, the terminal fittings 20 are housed in the housing portion 10 in a state where the terminal fittings 20 having the same shape are opposed to each other so as to sandwich the circuit board 2. It has become.

ハウジング部１０に収容される各端子金具２０は、いずれも、例えば、図２および図３に示すように構成されている。すなわち、端子金具２０は、ワイヤバレル部２１と、インシュレーションバレル部２２と、接続部２３と、を備えて構成されている。 Each of the terminal fittings 20 housed in the housing portion 10 is configured as shown in FIGS. 2 and 3, for example. That is, the terminal fitting 20 includes a wire barrel portion 21, an insulation barrel portion 22, and a connection portion 23.

ワイヤバレル部２１は、接続部２３の一端側（接続相手となる回路基板２の挿入側とは反対側）に位置するように配されており、図示せぬ電線の端縁近傍で露出する芯線と接続され得るように構成された、いわゆるオープンバレル形式のものである。ただし、必ずしも圧着により接続されるオープン形式である必要はなく、例えば、圧接やはんだ付けにより接続されるものや、クローズ形式のものであっても構わない。 The wire barrel portion 21 is arranged so as to be located on one end side of the connection portion 23 (the side opposite to the insertion side of the circuit board 2 to be connected), and the core wire exposed near the end edge of the electric wire (not shown). It is a so-called open barrel type that is configured to be connected to. However, it does not necessarily have to be an open type connected by crimping, and may be connected by pressure welding or soldering, or may be a closed type, for example.

インシュレーションバレル部２２は、ワイヤバレル部２１よりもさらに接続部２３から離れた側に位置するように配されており、電線の絶縁被覆部を固定され得るように構成されたオープンバレル形式のものである。ただし、インシュレーションバレル部２２についても、ワイヤバレル部２１と同様に、必ずしも圧着により接続されるオープン形式である必要はなく、例えば、圧接により接続されるものや、クローズ形式のものであっても構わない。 The insulation barrel portion 22 is arranged so as to be located further away from the connection portion 23 than the wire barrel portion 21, and is of an open barrel type configured so that the insulating coating portion of the electric wire can be fixed. Is. However, the insulation barrel portion 22 does not necessarily have to be an open type connected by crimping as in the wire barrel portion 21, and may be connected by pressure welding or a closed type, for example. I do not care.

接続部２３は、回路基板２の電極部との電気的接続を確保するためのもので、ワイヤバレル部２１と連続する筐体部３０と、筐体部３０に支持される弾性接触片４０と、を有して構成されている。 The connection portion 23 is for ensuring an electrical connection with the electrode portion of the circuit board 2, and includes a housing portion 30 continuous with the wire barrel portion 21 and an elastic contact piece 40 supported by the housing portion 30. , Is configured to have.

筐体部３０は、回路基板２の挿入方向に沿って延びる底面部３１と、底面部３１の両側縁から立ち上がるように設けられた各側壁部３２とを有し、これらによって上方側が開口する溝形断面形状に形成されている。また、筐体部３０は、側壁部３２のいずれか一方から延びるように設けられた上面部３３ａ，３３ｂを有し、その上面部３３ａ，３３ｂが筐体部３０の上方側の一部を覆うように形成されている。この上面部３３ａ，３３ｂは、詳細を後述するように、弾性接触片４０の移動を規制する規制片部として機能するようになっている。 The housing portion 30 has a bottom surface portion 31 extending along the insertion direction of the circuit board 2 and each side wall portion 32 provided so as to rise from both side edges of the bottom surface portion 31, and a groove opened on the upper side by these. Shape It is formed in a cross-sectional shape. Further, the housing portion 30 has upper surface portions 33a and 33b provided so as to extend from either one of the side wall portions 32, and the upper surface portions 33a and 33b cover a part of the upper side of the housing portion 30. It is formed like this. The upper surface portions 33a and 33b function as a restricting piece portion that regulates the movement of the elastic contact piece 40, as will be described in detail later.

弾性接触片４０は、筐体部３０の底面部３１の端縁から回路基板２の挿入方向に沿って延びる板バネ状に形成されており、回路基板２の挿入によって押圧されて弾性変形するように構成されている。この弾性接触片４０が回路基板２の電極と接触することで、当該電極との導通が確保されることになる。 The elastic contact piece 40 is formed in a leaf spring shape extending from the edge of the bottom surface portion 31 of the housing portion 30 along the insertion direction of the circuit board 2, and is pressed and elastically deformed by the insertion of the circuit board 2. It is configured in. When the elastic contact piece 40 comes into contact with the electrode of the circuit board 2, continuity with the electrode is ensured.

回路基板２の電極との導通を確保するために、弾性接触片４０は、回路基板２の挿入によって押圧される被押圧点として機能しつつ、押圧された後に回路基板２の電極と接触することになる第１接点部４１および第２接点部４２を有している。第１接点部４１および第２接点部４２は、いずれも回路基板２に向けて突出する凸形状の頂部近傍に配されるが、それぞれが回路基板２の挿入方向の異なる箇所に位置している。具体的には、第１接点部４１は、回路基板２の挿入方向の前方側（手前側）に位置しており、第２接点部４２は、回路基板２の挿入方向の後方側（奥側）に位置している。第１接点部４１と第２接点部４２とは、延伸ばね部４３を介して連結されている。 In order to ensure continuity with the electrodes of the circuit board 2, the elastic contact piece 40 functions as a pressed point pressed by the insertion of the circuit board 2, and comes into contact with the electrodes of the circuit board 2 after being pressed. It has a first contact portion 41 and a second contact portion 42. The first contact portion 41 and the second contact portion 42 are both arranged near the top of the convex shape protruding toward the circuit board 2, but each is located at a position different in the insertion direction of the circuit board 2. .. Specifically, the first contact portion 41 is located on the front side (front side) of the circuit board 2 in the insertion direction, and the second contact portion 42 is on the rear side (back side) of the circuit board 2 in the insertion direction. ) Is located. The first contact portion 41 and the second contact portion 42 are connected via a draw spring portion 43.

第１接点部４１から延びる第１の自由端部４４ａは、筐体部３０の上面部３３ａに当接するようになっている。これにより、当該上面部３３ａが規制片部として機能し、第１接点部４１は、押圧方向とは反対方向への移動が規制される。また、第２接点部４２から延びる第２の自由端部４４ｂについても、筐体部３０の上面部３３ｂに当接するようになっている。これにより、当該上面部３３ｂが規制片部として機能し、第２接点部４２は、押圧方向とは反対方向への移動が規制される。 The first free end portion 44a extending from the first contact portion 41 comes into contact with the upper surface portion 33a of the housing portion 30. As a result, the upper surface portion 33a functions as a regulating piece portion, and the movement of the first contact portion 41 in the direction opposite to the pressing direction is restricted. Further, the second free end portion 44b extending from the second contact portion 42 also comes into contact with the upper surface portion 33b of the housing portion 30. As a result, the upper surface portion 33b functions as a regulation piece portion, and the movement of the second contact portion 42 in the direction opposite to the pressing direction is restricted.

第１接点部４１および第２接点部４２は、規制片部によって移動が規制されている状態、すなわち回路基板２によって押圧されていない自由状態において、筐体部３０から露出するように配置されている。つまり、第１接点部４１および第２接点部４２は、筐体部３０の側壁部３２の端縁よりも回路基板２の側に位置しており、これにより回路基板２の電極と接触し得るように配置されている。 The first contact portion 41 and the second contact portion 42 are arranged so as to be exposed from the housing portion 30 in a state where movement is restricted by the regulation piece portion, that is, in a free state where the movement is restricted by the circuit board 2. There is. That is, the first contact portion 41 and the second contact portion 42 are located closer to the circuit board 2 than the edge of the side wall portion 32 of the housing portion 30, so that they can come into contact with the electrodes of the circuit board 2. It is arranged like this.

また、弾性接触片４０は、筐体部３０の底面部３１の端縁から立ち上がる折り返し部４５と、折り返し部４５から延びる第１板状部４６と、第１板状部４６と連続する第２板状部４７と、第１板状部４６と第２板状部４７との間に位置する変曲部４８とを有しており、第１接点部４１および第２接点部４２の構成片が曲げ部４９を介して第２板状部４７に連結されて構成されている。 Further, the elastic contact piece 40 has a second plate-shaped portion 46 that rises from the edge of the bottom surface portion 31 of the housing portion 30, a first plate-shaped portion 46 that extends from the folded-back portion 45, and a second plate-shaped portion 46 that is continuous with the first plate-shaped portion 46. It has a plate-shaped portion 47 and a curved portion 48 located between the first plate-shaped portion 46 and the second plate-shaped portion 47, and is a constituent piece of the first contact portion 41 and the second contact portion 42. Is connected to the second plate-shaped portion 47 via the bent portion 49.

折り返し部４５は、底面部３１と隙間を空けて略平行に位置するように第１板状部４６を支持するもので、第１板状部４６が揺動する際の支点となる。第１板状部４６は、第１接点部４１が回路基板２に押圧されると、これに伴う弾性変形によって底面部３１に近づく方向に移動する。つまり、折り返し部４５は、第１接点部４１が回路基板２に押圧されたときに第１板状部４６が弾性変形する際の支点となる第１支点部として機能するようになっている。以下、折り返し部４５のことを第１支点部４５ともいう。 The folded-back portion 45 supports the first plate-shaped portion 46 so as to be positioned substantially parallel to the bottom surface portion 31 with a gap, and serves as a fulcrum when the first plate-shaped portion 46 swings. When the first contact portion 41 is pressed against the circuit board 2, the first plate-shaped portion 46 moves in a direction approaching the bottom surface portion 31 due to the elastic deformation accompanying the first contact portion 41. That is, the folded-back portion 45 functions as a first fulcrum portion that serves as a fulcrum when the first plate-shaped portion 46 is elastically deformed when the first contact portion 41 is pressed against the circuit board 2. Hereinafter, the folded-back portion 45 is also referred to as a first fulcrum portion 45.

変曲部４８は、第１板状部４６と第２板状部４７とが異なる角度で延在するようにそれぞれを連結するものである。変曲部４８は、第１板状部４６の移動により底面部３１に当接すると、その当接後に第２板状部４７が揺動する際の支点となる。第２板状部４７は、第２接点部４２が回路基板２に押圧されると、これに伴う弾性変形によって底面部３１に近づく方向に移動する。つまり、変曲部４８は、第２接点部４２が回路基板２に押圧されたときに第２板状部４７が弾性変形する際の支点となる第２支点部として機能するようになっている。以下、変曲部４８のことを第２支点部４８ともいう。 The variable portion 48 connects the first plate-shaped portion 46 and the second plate-shaped portion 47 so as to extend at different angles. When the variable portion 48 comes into contact with the bottom surface portion 31 due to the movement of the first plate-shaped portion 46, the variable portion 48 serves as a fulcrum when the second plate-shaped portion 47 swings after the contact. When the second contact portion 42 is pressed against the circuit board 2, the second plate-shaped portion 47 moves in a direction approaching the bottom surface portion 31 due to the elastic deformation accompanying the pressure. That is, the bending portion 48 functions as a second fulcrum portion that serves as a fulcrum when the second plate-shaped portion 47 is elastically deformed when the second contact portion 42 is pressed against the circuit board 2. .. Hereinafter, the inflection portion 48 is also referred to as a second fulcrum portion 48.

このように、弾性接触片４０においては、第１支点部４５と第２支点部４８とが異なる位置に配されている。
具体的には、第１支点部４５は、第１接点部４１よりも回路基板２の挿入方向の前方側（手前側）に位置している。これにより、第１支点部４５は、第１接点部４１が回路基板２に押圧されると、第１接点部４１を回路基板２から離れる方向に向けて移動させるように構成される。
また、第２支点部４８は、回路基板２の挿入方向において、第１接点部４１と第２接点部４２との間に位置している。これにより、第２支点部４８は、第２接点部４２が回路基板２に押圧されると、第２接点部４２を回路基板２から離れる方向に向けて移動させるとともに、第１接点部４１を回路基板２に近づく方向に向けて移動させるように構成される。なお、第１接点部４１を回路基板２に近づく方向に移動させる場合に、第１接点部４１が回路基板２に当接すると、その後は第１接点部４１と第２接点部４２との間に位置する延伸ばね部４３が撓むように弾性変形することになる。 As described above, in the elastic contact piece 40, the first fulcrum portion 45 and the second fulcrum portion 48 are arranged at different positions.
Specifically, the first fulcrum portion 45 is located on the front side (front side) of the circuit board 2 in the insertion direction with respect to the first contact portion 41. As a result, the first fulcrum portion 45 is configured to move the first contact portion 41 away from the circuit board 2 when the first contact portion 41 is pressed against the circuit board 2.
Further, the second fulcrum portion 48 is located between the first contact portion 41 and the second contact portion 42 in the insertion direction of the circuit board 2. As a result, when the second contact portion 42 is pressed against the circuit board 2, the second fulcrum portion 48 moves the second contact portion 42 away from the circuit board 2 and moves the first contact portion 41 away from the circuit board 2. It is configured to move toward the circuit board 2. When the first contact portion 41 is moved in the direction approaching the circuit board 2, if the first contact portion 41 comes into contact with the circuit board 2, then between the first contact portion 41 and the second contact portion 42. The extension spring portion 43 located at is elastically deformed so as to bend.

このような構成の弾性接触片４０は、第１接点部４１および第２接点部４２の構成片と第２板状部４７とが曲げ部４９を介して連結されている。そのため、第１接点部４１と第２接点部４２との間に第２支点部４８が位置するように弾性接触片４０を構成する場合であっても、複数ピースの部品を組み合わせるのではなく、一枚の板状部材の曲げ加工によって形成することができる。このことは、かかる構成の弾性接触片４０を備える端子金具２０を、一枚の板状部材の曲げ加工によって形成可能であることを意味する。 In the elastic contact piece 40 having such a configuration, the constituent pieces of the first contact portion 41 and the second contact portion 42 and the second plate-shaped portion 47 are connected via the bent portion 49. Therefore, even when the elastic contact piece 40 is configured so that the second fulcrum portion 48 is located between the first contact portion 41 and the second contact portion 42, the parts of a plurality of pieces are not combined. It can be formed by bending a single plate-shaped member. This means that the terminal fitting 20 provided with the elastic contact piece 40 having such a configuration can be formed by bending a single plate-shaped member.

（３）端子金具の使用態様
次に、上述した構成の端子金具２０の使用態様について説明する。ここでは、主として、端子金具２０を収容するハウジング部１０の嵌合部１０ａに対して回路基板２を挿入した場合における、当該端子金具２０が備える弾性接触片４０の処理動作を例に挙げて説明する。
図４は、本実施形態に係る端子金具が備える弾性接触片の処理動作を模式的に示す説明図である。 (3) Usage of the terminal fitting Next, a usage mode of the terminal fitting 20 having the above-described configuration will be described. Here, mainly, the processing operation of the elastic contact piece 40 included in the terminal fitting 20 when the circuit board 2 is inserted into the fitting portion 10a of the housing portion 10 accommodating the terminal fitting 20 will be described as an example. do.
FIG. 4 is an explanatory diagram schematically showing the processing operation of the elastic contact piece included in the terminal fitting according to the present embodiment.

ハウジング部１０の嵌合部１０ａに回路基板２を挿入すると、図４（ａ）に示すように、その回路基板２の端縁は、まず最初に、ハウジング部１０に収容された端子金具２０の弾性接触片４０における第１接点部４１の近傍に当接する。 When the circuit board 2 is inserted into the fitting portion 10a of the housing portion 10, as shown in FIG. 4A, the edge of the circuit board 2 is first of all the terminal fitting 20 housed in the housing portion 10. The elastic contact piece 40 comes into contact with the vicinity of the first contact portion 41.

そして、そのまま回路基板２の挿入を続けると、図４（ｂ）に示すように、回路基板２の端縁は、弾性接触片４０の第１接点部４１を乗り越えようとする。これにより、第１接点部４１は、端子金具２０の底面部３１の側、すなわち回路基板２から離れる方向に向けて、回路基板２によって押圧される。第１接点部４１が被押圧点となると、弾性接触片４０では、第１接点部４１が第１支点部４５を支点とし、主として第１板状部４６が弾性変形して、第１接点部４１の位置が移動する。つまり、第１接点部４１は、回路基板２に押圧されることで、被押圧点から最も離れた位置にある第１支点部４５を支点として、回路基板２から離れる方向に向けて移動する。これにより、回路基板２は、第１接点部４１を乗り越えることが可能となる。このとき、第１接点部４１と第１支点部４５との間の距離を適宜設定する（例えば、可能な限り距離を大きくする）ことで、弾性接触片４０が弾性変形する際のバネ定数を小さくすることができ、その弾性変形のために要する押圧力（回路基板２の挿入力）を低く抑えられる。 Then, when the insertion of the circuit board 2 is continued as it is, as shown in FIG. 4B, the edge of the circuit board 2 tries to get over the first contact portion 41 of the elastic contact piece 40. As a result, the first contact portion 41 is pressed by the circuit board 2 toward the side of the bottom surface portion 31 of the terminal fitting 20, that is, in the direction away from the circuit board 2. When the first contact portion 41 becomes a pressed point, in the elastic contact piece 40, the first contact portion 41 uses the first fulcrum portion 45 as a fulcrum, and the first plate-shaped portion 46 is mainly elastically deformed to cause the first contact portion. The position of 41 moves. That is, when the first contact portion 41 is pressed by the circuit board 2, the first contact portion 41 moves in a direction away from the circuit board 2 with the first fulcrum portion 45 located at the position farthest from the pressed point as a fulcrum. As a result, the circuit board 2 can get over the first contact portion 41. At this time, by appropriately setting the distance between the first contact portion 41 and the first fulcrum portion 45 (for example, increasing the distance as much as possible), the spring constant when the elastic contact piece 40 elastically deforms can be obtained. It can be made smaller, and the pressing force (insertion force of the circuit board 2) required for its elastic deformation can be suppressed to a low level.

回路基板２が第１接点部４１を乗り越えると、図４（ｃ）に示すように、弾性接触片４０では、第１支点部４５を支点とした第１板状部４６の弾性変形により第２支点部４８が底面部３１に当接する。また、必要に応じて第２支点部４８よりも末端側の延伸ばね部４３等にも弾性変形が生じる。これにより、回路基板２の下面側に第１接点部４１が接触した状態のまま、さらに回路基板２の挿入を続けることが可能となる。 When the circuit board 2 gets over the first contact portion 41, as shown in FIG. 4C, in the elastic contact piece 40, the second plate-shaped portion 46 is elastically deformed with the first fulcrum portion 45 as the fulcrum. The fulcrum portion 48 comes into contact with the bottom surface portion 31. Further, if necessary, elastic deformation also occurs in the extension spring portion 43 and the like on the terminal side of the second fulcrum portion 48. This makes it possible to continue inserting the circuit board 2 while the first contact portion 41 is in contact with the lower surface side of the circuit board 2.

そのまま回路基板２の挿入を続けると、図４（ｄ）に示すように、その回路基板２の端縁は、弾性接触片４０における第２接点部４２の近傍に当接する。 When the circuit board 2 is continuously inserted as it is, as shown in FIG. 4D, the edge of the circuit board 2 comes into contact with the vicinity of the second contact portion 42 of the elastic contact piece 40.

そして、さらに回路基板２の挿入を続けると、図４（ｅ）に示すように、回路基板２の端縁は、第２接点部４２を乗り越えようとする。これにより、第２接点部４２は、端子金具２０の底面部３１の側、すなわち回路基板２から離れる方向に向けて、回路基板２によって押圧される。第２接点部４２が被押圧点となると、弾性接触片４０では、第２接点部４２が第２支点部４８を支点とし、主として第２板状部４７が弾性変形して、第２接点部４２の位置が移動する。つまり、第２接点部４２は、回路基板２に押圧されることで、底面部３１に当接した状態の第２支点部４８を支点として、回路基板２から離れる方向に向けて移動する。これにより、回路基板２は、第２接点部４２を乗り越えることが可能となる。 Then, when the insertion of the circuit board 2 is continued, as shown in FIG. 4 (e), the edge of the circuit board 2 tries to get over the second contact portion 42. As a result, the second contact portion 42 is pressed by the circuit board 2 toward the side of the bottom surface portion 31 of the terminal fitting 20, that is, in the direction away from the circuit board 2. When the second contact portion 42 becomes a pressed point, in the elastic contact piece 40, the second contact portion 42 uses the second fulcrum portion 48 as a fulcrum, and the second plate-shaped portion 47 is mainly elastically deformed to form the second contact portion. The position of 42 moves. That is, when the second contact portion 42 is pressed against the circuit board 2, the second contact portion 42 moves in a direction away from the circuit board 2 with the second fulcrum portion 48 in contact with the bottom surface portion 31 as a fulcrum. As a result, the circuit board 2 can get over the second contact portion 42.

このとき、第２支点部４８は、第１接点部４１と第２接点部４２との間に位置している。また、第１接点部４１と第２接点部４２とは、連結されて一体となっている。したがって、第２接点部４２が回路基板２から離れる方向に向けて移動すると、これに伴って、第１接点部４１は、回路基板２に近づく方向に向けて移動しようとする。つまり、第１接点部４１および第２接点部４２には、図中における時計周り方向に向けて回転しようとする力が働く。ただし、第１接点部４１は、既に回路基板２の下面側に接触した状態となっている。そのため、第１接点部４１が回路基板２に近づく方向に向けて移動しようとすると、延伸ばね部４３が弾性変形することになり、これにより第１接点部４１における回路基板２への接触力が増大することになる。 At this time, the second fulcrum portion 48 is located between the first contact portion 41 and the second contact portion 42. Further, the first contact portion 41 and the second contact portion 42 are connected and integrated. Therefore, when the second contact portion 42 moves in the direction away from the circuit board 2, the first contact portion 41 tends to move in the direction closer to the circuit board 2. That is, a force that tends to rotate in the clockwise direction in the drawing acts on the first contact portion 41 and the second contact portion 42. However, the first contact portion 41 is already in contact with the lower surface side of the circuit board 2. Therefore, when the first contact portion 41 tries to move in a direction approaching the circuit board 2, the extension spring portion 43 elastically deforms, and as a result, the contact force of the first contact portion 41 with the circuit board 2 is increased. It will increase.

回路基板２が第２接点部４２を乗り越えた後は、第１接点部４１と第２接点部４２との少なくとも一方、好ましくはこれらの両方が、回路基板２の下面に配された電極と接触した状態となる。これにより、回路基板２の電極と弾性接触片４０を備える端子金具２０との導通が確保されることになる。 After the circuit board 2 gets over the second contact portion 42, at least one of the first contact portion 41 and the second contact portion 42, preferably both of them, comes into contact with the electrodes arranged on the lower surface of the circuit board 2. It will be in the state of. As a result, the conduction between the electrode of the circuit board 2 and the terminal fitting 20 provided with the elastic contact piece 40 is ensured.

（４）基板挿入力の推移
次に、上述した処理動作の際の回路基板２の挿入力の推移について説明する。 (4) Transition of Substrate Insertion Force Next, the transition of the insertion force of the circuit board 2 during the above-mentioned processing operation will be described.

回路基板２の挿入力Ｆｍは、下記の式（１）のように、回路基板２に対する弾性接触片４０の接触力Ｆｃと接触箇所の摩擦係数μとの積によって表される。 The insertion force Fm of the circuit board 2 is expressed by the product of the contact force Fc of the elastic contact piece 40 with respect to the circuit board 2 and the friction coefficient μ of the contact point, as shown in the following equation (1).

Ｆｍ＝Ｆｃ×μ・・・（１） Fm = Fc × μ ... (1)

また、回路基板２の端縁や弾性接触片４０における被当接箇所等にテーパ（傾斜）が付いていると、回路基板２の挿入力Ｆｍは、下記の式（２）のように、角度パラメータｆ（θ）が積算され、回路基板２が弾性接触片４０の接点部に乗り上げた時点で挿入力が最大値になる。 Further, if the edge of the circuit board 2 or the contacted portion of the elastic contact piece 40 has a taper (inclination), the insertion force Fm of the circuit board 2 has an angle as shown in the following equation (2). The parameter f (θ) is integrated, and the insertion force becomes the maximum value when the circuit board 2 rides on the contact portion of the elastic contact piece 40.

Ｆｍ＝Ｆｃ×μ×ｆ（θ）・・・（２） Fm = Fc × μ × f (θ) ・ ・ ・ (2)

図５は、回路基板の挿入力と弾性接触片の接触力との関係の具体例を示す説明図である。
ここでは、本実施形態における回路基板２の挿入力と弾性接触片４０の接触力との関係を図５（ａ）に示し、比較例における回路基板の挿入力と弾性接触片の接触力との関係を図５（ｂ）に示している。比較例の弾性接触片は、本実施形態の場合と同様に、挿入方向前方側に第１接点部を有し、挿入方向後方側に第２接点部を有しているが、それぞれが連結されておらず別個独立に弾性変形するように構成されているものとする。
図中では、本実施形態および比較例のいずれの場合も、横軸を基板挿入量（例えば、単位：ｍｍ）、縦軸を力の大きさ（例えば、単位：Ｎ）とする座標空間上にて、基板端縁が第１接点部を越える基板挿入量を「１」、基板端縁が第２接点部を越える基板挿入量を「３．９」、終期の第１接点部の接触力を「４」、終期の第２接点部の接触力を「２」と仮定したときの、挿入力および接触力の推移を示している。 FIG. 5 is an explanatory diagram showing a specific example of the relationship between the insertion force of the circuit board and the contact force of the elastic contact piece.
Here, the relationship between the insertion force of the circuit board 2 and the contact force of the elastic contact piece 40 in the present embodiment is shown in FIG. 5A, and the insertion force of the circuit board and the contact force of the elastic contact piece in the comparative example are shown in FIG. The relationship is shown in FIG. 5 (b). The elastic contact pieces of the comparative example have a first contact portion on the front side in the insertion direction and a second contact portion on the rear side in the insertion direction, as in the case of the present embodiment, but they are connected to each other. It is assumed that it is configured to elastically deform independently and independently.
In the figure, in both the present embodiment and the comparative example, the horizontal axis is the substrate insertion amount (for example, unit: mm), and the vertical axis is the force magnitude (for example, unit: N) on the coordinate space. The amount of substrate insertion in which the edge of the substrate exceeds the first contact portion is "1", the amount of insertion of the substrate in which the edge of the substrate exceeds the second contact portion is "3.9", and the contact force of the first contact portion at the final stage is set. "4", the transition of the insertion force and the contact force when the contact force of the second contact portion at the final stage is assumed to be "2" is shown.

例えば、基板挿入量が「１」のとき、本実施形態の場合は、図５（ａ）に示すように、第１接点部４１が第１支点部４５を支点とするので、その第１接点部４１による接触力が終期の半分程度で「２」となり、そのときの基板挿入力が「５」となる。これに対して、比較例の場合は、図５（ｂ）に示すように、第１接点部に基板端縁が乗り上げた状態で接触力が終期の「４」と最大になるため、同時に基板挿入力も最大の「１０」になる（すなわち、上記の式（２）が適用される）。
その後、基板挿入量が「１」〜「３」までは、第１接点部のみが接触、摺動している状態のため、接触力、基板挿入力ともに同一のまま（すなわち、図中グラフが水平のまま）推移する（すなわち、上記の式（１）が適用される）。つまり、本実施形態の場合は、比較例の場合よりも、小さな基板挿入力で回路基板２の挿入を行うことができる。
そして、基板挿入量が「３」辺りから、基板端縁が第２接点部に当接する。本実施形態の場合は、第２接点部４２の移動に伴って第１接点部４１をも移動させようとする回転力が生じるため、図５（ａ）に示すように、第２接点部４２の接触力のみならず、第１接点部４１の接触力も増えていく。その結果、基板端縁が第２接点部４２に乗り上げた状態になると、第１接点部４１の接触力が終期の「４」に達する。これは、第１接点部４１と第２接点部４２とが連結しているとともに、その間に第２支点部４８が存在しているからであり、そのような構成を備えない比較例の場合は、図５（ｂ）に示すように、基板端縁が第２接触部に当接しても、第１接点部の接触力に変化はない。
本実施形態の場合は、図５（ａ）に示すように、基板端縁が第２接点部４２に乗り上げる際に基板挿入力が最大値となるが、この時点で第１接点部４１については基板端縁が既に乗り上げた状態であるため、基板挿入力については式（１）が適用され、角度パラメータが積算されない。そのため、本実施形態の場合の基板挿入力が最大値は「８」程度に抑えることができ、比較例の場合の基板挿入力の最大値よりも低い値となる。 For example, when the substrate insertion amount is "1", in the case of the present embodiment, as shown in FIG. 5A, the first contact portion 41 has the first fulcrum portion 45 as the fulcrum, and therefore the first contact portion thereof. The contact force of the portion 41 becomes "2" at about half of the final stage, and the substrate insertion force at that time becomes "5". On the other hand, in the case of the comparative example, as shown in FIG. 5 (b), the contact force reaches the maximum of "4" at the final stage when the edge of the substrate rides on the first contact portion, so that the substrate is simultaneously present. The insertion force also becomes the maximum "10" (that is, the above equation (2) is applied).
After that, when the substrate insertion amount is "1" to "3", only the first contact portion is in contact and slide, so both the contact force and the substrate insertion force remain the same (that is, the graph in the figure shows. It changes (that is, the above equation (1) is applied). That is, in the case of the present embodiment, the circuit board 2 can be inserted with a smaller substrate insertion force than in the case of the comparative example.
Then, when the amount of the substrate inserted is around "3", the edge of the substrate comes into contact with the second contact portion. In the case of the present embodiment, a rotational force is generated to move the first contact portion 41 as the second contact portion 42 moves. Therefore, as shown in FIG. 5A, the second contact portion 42 Not only the contact force of the first contact portion 41 but also the contact force of the first contact portion 41 increases. As a result, when the edge of the substrate rides on the second contact portion 42, the contact force of the first contact portion 41 reaches the final “4”. This is because the first contact portion 41 and the second contact portion 42 are connected to each other, and the second fulcrum portion 48 exists between them. In the case of the comparative example not provided with such a configuration, the first contact portion 41 and the second contact portion 42 are connected to each other. As shown in FIG. 5B, even if the edge of the substrate abuts on the second contact portion, the contact force of the first contact portion does not change.
In the case of the present embodiment, as shown in FIG. 5A, the substrate insertion force becomes the maximum value when the edge of the substrate rides on the second contact portion 42, but at this point, the first contact portion 41 has a maximum value. Since the edge of the board has already been ridden, the equation (1) is applied to the board insertion force, and the angle parameter is not integrated. Therefore, the maximum value of the substrate insertion force in the case of the present embodiment can be suppressed to about "8", which is lower than the maximum value of the substrate insertion force in the case of the comparative example.

（５）本実施形態により得られる効果
本実施形態によれば、以下に示す一つまたは複数の効果が得られる。 (5) Effects obtained by the present embodiment According to the present embodiment, one or more of the following effects can be obtained.

（ａ）本実施形態において、端子金具２０の弾性接触片４０は、基板挿入方向前方側の第１接点部４１が回路基板２に押圧されると、第１支点部４５が第１接点部４１を回路基板２から離れる方向に向けて移動させ、基板挿入方向後方側の第２接点部４２が回路基板２に押圧されると、第２支点部４８が、第２接点部４２を回路基板２から離れる方向に向けて移動させるとともに、第１接点部４１を回路基板２に近づく方向に向けて移動させるように構成されている。
このような構成の弾性接触片４０では、まず第１接点部４１が第１支点部４５を支点として移動するので、その弾性変形のためのバネ定数を小さくすることが可能となり、その結果として第１接点部４１の押圧に要する力（回路基板２の挿入力）を低く抑えることができる。つまり、回路基板２が最初に第１接点部４１に当接する際の力を低く抑えられるので、比較的小さな基板挿入力で回路基板２の挿入を行うことができる。
しかも、弾性接触片４０では、回路基板２が第２接点部４２に当接した後、第２支点部４８を支点とすることで第２接点部４２の移動に伴って第１接点部４１をも移動させようとする回転力が生じるため、これにより第１接点部４１における回路基板２への接触力を増大させることができる。
したがって、本実施形態によれば、基板挿入時の低挿入力化と、基板挿入後における導通（電極に対する弾性接触片４０の接触）の信頼性向上という、互いに相反する事項を両立させることが実現可能となる。 (A) In the present embodiment, in the elastic contact piece 40 of the terminal fitting 20, when the first contact portion 41 on the front side in the substrate insertion direction is pressed against the circuit board 2, the first fulcrum portion 45 becomes the first contact portion 41. Is moved toward the direction away from the circuit board 2, and when the second contact portion 42 on the rear side in the substrate insertion direction is pressed against the circuit board 2, the second fulcrum portion 48 makes the second contact portion 42 the circuit board 2. It is configured to move the first contact portion 41 toward the circuit board 2 while moving the first contact portion 41 away from the circuit board 2.
In the elastic contact piece 40 having such a configuration, the first contact portion 41 first moves with the first fulcrum portion 45 as the fulcrum, so that the spring constant for the elastic deformation can be reduced, and as a result, the first contact portion 40 can be used. The force required for pressing the 1 contact portion 41 (insertion force of the circuit board 2) can be suppressed to a low level. That is, since the force when the circuit board 2 first abuts on the first contact portion 41 can be suppressed to a low level, the circuit board 2 can be inserted with a relatively small substrate insertion force.
Moreover, in the elastic contact piece 40, after the circuit board 2 comes into contact with the second contact portion 42, the first contact portion 41 is moved as the second contact portion 42 moves by using the second fulcrum portion 48 as a fulcrum. Since a rotational force is generated to move the first contact portion 41, the contact force of the first contact portion 41 to the circuit board 2 can be increased.
Therefore, according to the present embodiment, it is possible to achieve both the low insertion force at the time of inserting the substrate and the improvement of the reliability of the conduction (contact of the elastic contact piece 40 with the electrode) after the insertion of the substrate, which are contradictory to each other. It will be possible.

（ｂ）本実施形態において、端子金具２０の弾性接触片４０は、回路基板２と第２接点部４２との当接後に基板挿入力が最大値となり、回路基板２が第１接点部４１のみと当接している段階では基板挿入力が最大値に満たないように構成されている（図５（ａ）参照）。したがって、回路基板２が第１接点部４１のみと当接している挿入当初は基板挿入力を低く抑えつつ、回路基板２と第２接点部４２との当接後に接触力増大による導通の信頼性向上を図ることができる。しかも、第２接点部４２との当接後においても、その時点で第１接点部４１については基板端縁が既に乗り上げた状態であるため、基板挿入力に角度パラメータが積算されず、その結果として基板挿入力の最大値についても比較的低く抑えることが実現可能となる。 (B) In the present embodiment, the elastic contact piece 40 of the terminal fitting 20 has the maximum board insertion force after the circuit board 2 and the second contact portion 42 come into contact with each other, and the circuit board 2 has only the first contact portion 41. At the stage of contact with the substrate, the substrate insertion force is configured to be less than the maximum value (see FIG. 5A). Therefore, while the substrate insertion force is kept low at the beginning of insertion when the circuit board 2 is in contact with only the first contact portion 41, the reliability of conduction due to the increase in contact force after the contact between the circuit board 2 and the second contact portion 42 is achieved. It can be improved. Moreover, even after the contact with the second contact portion 42, since the board edge of the first contact portion 41 is already on the board at that time, the angle parameter is not integrated in the board insertion force, and as a result. Therefore, it is possible to keep the maximum value of the substrate insertion force relatively low.

（ｃ）本実施形態において、端子金具２０の弾性接触片４０における第１接点部４１および第２接点部４２は、押圧されていない自由状態において、端子金具２０を構成する筐体部３０から露出するように配置されている。したがって、基板挿入方向の前後に並ぶように第１接点部４１および第２接点部４２が配されている場合に、回路基板２の端縁を第１接点部４１および第２接点部４２のそれぞれに順に当接させることができる。しかも、それぞれに対する当接を確実に行うことができ、回路基板２の電極部に付着したゴミ等を第１接点部４１が拭い去り、清浄な電極部と第２接点部４２が当接できるので、基板挿入時の低挿入力化と基板挿入後における導通信頼性向上とを両立させる上で非常に好適なものとなる。 (C) In the present embodiment, the first contact portion 41 and the second contact portion 42 of the elastic contact piece 40 of the terminal fitting 20 are exposed from the housing portion 30 constituting the terminal fitting 20 in a free state where they are not pressed. Arranged to do. Therefore, when the first contact portion 41 and the second contact portion 42 are arranged so as to be arranged in front of and behind the substrate insertion direction, the edge of the circuit board 2 is aligned with the first contact portion 41 and the second contact portion 42, respectively. Can be brought into contact with each other in order. Moreover, since it is possible to reliably contact each of them, the first contact portion 41 wipes off dust and the like adhering to the electrode portion of the circuit board 2, and the clean electrode portion and the second contact portion 42 can be brought into contact with each other. It is very suitable for achieving both a low insertion force when the substrate is inserted and an improvement in conduction reliability after the substrate is inserted.

（ｄ）本実施形態において、端子金具２０を構成する筐体部３０は、第１接点部４１および第２接点部４２の押圧方向とは反対方向への移動を規制する規制片部を有している。したがって、押圧されていない自由状態における第１接点部４１および第２接点部４２の位置を規制して、回路基板２の端縁との当接位置がばらついてしまうのを抑制できるので、基板挿入時の低挿入力化を確実なものとする上で非常に好適なものとなる。 (D) In the present embodiment, the housing portion 30 constituting the terminal fitting 20 has a restricting piece portion that restricts the movement of the first contact portion 41 and the second contact portion 42 in the direction opposite to the pressing direction. ing. Therefore, the positions of the first contact portion 41 and the second contact portion 42 in the unpressed free state can be restricted to prevent the contact position with the end edge of the circuit board 2 from being scattered, so that the substrate can be inserted. It is very suitable for ensuring low insertion force at the time.

（ｅ）本実施形態における端子金具２０は、一枚の板状部材の曲げ加工によって形成されている。具体的には、例えば、端子金具２０の弾性接触片４０において、第１接点部４１および第２接点部４２の構成片と第２板状部４７とが、曲げ部４９を介して連結されている。したがって、基板挿入時の低挿入力化と基板挿入後における導通信頼性向上とを両立させるべく、弾性接触片４０が上述したような複雑な形状に形成されている場合であっても、複数ピースの部品を組み合わせるのではなく、一枚の板状部材の曲げ加工によって形成することができ、端子金具２０の構成の複雑化を抑制して当該端子金具２０の低コスト化を実現する上で非常に好適なものとなる。 (E) The terminal fitting 20 in the present embodiment is formed by bending a single plate-shaped member. Specifically, for example, in the elastic contact piece 40 of the terminal fitting 20, the constituent pieces of the first contact portion 41 and the second contact portion 42 and the second plate-shaped portion 47 are connected via the bent portion 49. There is. Therefore, in order to achieve both a low insertion force when inserting the substrate and an improvement in conduction reliability after inserting the substrate, even if the elastic contact piece 40 is formed in a complicated shape as described above, a plurality of pieces are used. It can be formed by bending a single plate-shaped member instead of combining the parts of the above, and it is extremely difficult to suppress the complexity of the configuration of the terminal fitting 20 and realize the cost reduction of the terminal fitting 20. It becomes suitable for.

（ｆ）本実施形態において、端子金具２０は、カードエッジコネクタ１を構成するハウジング部１０に装着されて用いられる。カードエッジコネクタ１は回路基板２を差し込んで使用されるが、本実施形態によれば、基板挿入時の低挿入力化と基板挿入後における導通信頼性向上とを両立させることができるので、そのカードエッジコネクタ１の使用者にとって使い勝手が良く、しかも非常に電気的な信頼性に優れたものとなる。 (F) In the present embodiment, the terminal fitting 20 is used by being mounted on the housing portion 10 constituting the card edge connector 1. The card edge connector 1 is used by inserting the circuit board 2, but according to the present embodiment, it is possible to achieve both a low insertion force when the board is inserted and an improvement in conduction reliability after the board is inserted. It is easy to use for the user of the card edge connector 1, and has excellent electrical reliability.

（６）変形例等
以上に、本発明の実施形態を具体的に説明したが、本発明は上述の実施形態に限定されるものではなく、その要旨を逸脱しない範囲で適宜変更可能である。 (6) Modifications and the like Although the embodiments of the present invention have been specifically described above, the present invention is not limited to the above-described embodiments and can be appropriately modified without departing from the gist thereof.

上述の実施形態では、主として、端子金具２０が回路基板２の一方の面側に配されている場合を例に挙げて説明したが、必ずしも本発明がこれに限定されることはない。例えば、カードエッジコネクタ１において、端子金具２０は、回路基板２の両面に対応して配されていてもよい。その場合に、両面に対応する各端子金具２０は、それぞれの弾性接触片４０が向き合うように配され、それぞれの間に回路基板２の端縁が挿入されるものとする。また、互いに向き合う各端子金具２０は、基板挿入方向において、それぞれが揃った位置に配されていてもよいし、それぞれが異なった位置にオフセットして配されていてもよい。 In the above-described embodiment, the case where the terminal fitting 20 is mainly arranged on one surface side of the circuit board 2 has been described as an example, but the present invention is not necessarily limited to this. For example, in the card edge connector 1, the terminal fittings 20 may be arranged corresponding to both sides of the circuit board 2. In that case, the terminal fittings 20 corresponding to both sides are arranged so that the elastic contact pieces 40 face each other, and the edge of the circuit board 2 is inserted between them. Further, the terminal fittings 20 facing each other may be arranged at the same positions in the substrate insertion direction, or may be arranged at offset to different positions.

上述の実施形態では、主として、端子金具２０がカードエッジコネクタ１を構成する場合を例に挙げて説明したが、必ずしも本発明がこれに限定されることはない。例えば、本発明に係る端子金具は、カードエッジコネクタ以外のコネクタであっても、当該端子金具の嵌合相手となる電極や端子等が第１接点部と第２接点部に順に当接するように挿入されるものであれば、全く同様に適用することが可能である。 In the above-described embodiment, the case where the terminal fitting 20 constitutes the card edge connector 1 has been described as an example, but the present invention is not necessarily limited to this. For example, in the terminal fitting according to the present invention, even if the connector is a connector other than the card edge connector, the electrodes, terminals, etc. to be fitted to the terminal fitting are in contact with the first contact portion and the second contact portion in order. If it is inserted, it can be applied in exactly the same way.

１…カードエッジコネクタ、２…回路基板、１０…ハウジング部、１０ａ…嵌合部、２０…端子金具、２１…ワイヤバレル部、２２…インシュレーションバレル部、２３…接続部、３０…筐体部、３１…底面部、３２…側壁部、３３ａ，３３ｂ…上面部（規制片部）、４０…弾性接触片、４１…第１接点部、４２…第２接点部、４３…延伸ばね部、４４ａ…第１の自由端部、４４ｂ…第２の自由端部、４５…折り返し部（第１支点部）、４６…第１板状部、４７…第２板状部、４８…変曲部（第２支点部）、４９…曲げ部 1 ... card edge connector, 2 ... circuit board, 10 ... housing part, 10a ... fitting part, 20 ... terminal fitting, 21 ... wire barrel part, 22 ... insulation barrel part, 23 ... connection part, 30 ... housing part , 31 ... bottom surface portion, 32 ... side wall portion, 33a, 33b ... top surface portion (regulatory piece portion), 40 ... elastic contact piece, 41 ... first contact portion, 42 ... second contact portion, 43 ... extension spring portion, 44a. ... first free end portion, 44b ... second free end portion, 45 ... folded portion (first fulcrum portion), 46 ... first plate-shaped portion, 47 ... second plate-shaped portion, 48 ... variable portion (... 2nd fulcrum), 49 ... Bending part

Claims (7)

基板が挿入されるコネクタに装着され、前記基板と前記コネクタとの嵌合状態で当該基板の面上に配された電極と接触する弾性接触片を備える端子金具であって、
前記弾性接触片は、
前記基板の挿入方向の前方側に位置する第１接点部と、
前記基板の挿入方向の後方側に位置する第２接点部と、
前記第１接点部が前記基板に押圧されたときの弾性変形の支点となる第１支点部と、
前記第２接点部が前記基板に押圧されたときの弾性変形の支点となる第２支点部と、
を有し、
前記第１支点部と前記第２支点部とが異なる位置に配されており、
前記第１支点部は、前記第１接点部が前記基板に押圧されると、前記第１接点部を前記基板から離れる方向に向けて移動させるように構成され、
前記第２支点部は、前記第２接点部が前記基板に押圧されると、前記第２接点部を前記基板から離れる方向に向けて移動させるとともに、前記第１接点部を前記基板に近づく方向に向けて移動させるように構成される
端子金具。 A terminal fitting having an elastic contact piece attached to a connector into which a substrate is inserted and in contact with an electrode arranged on the surface of the substrate in a fitted state between the substrate and the connector.
The elastic contact piece is
The first contact portion located on the front side in the insertion direction of the substrate,
The second contact portion located on the rear side in the insertion direction of the substrate,
The first fulcrum portion, which is the fulcrum of elastic deformation when the first contact portion is pressed against the substrate,
The second fulcrum portion, which is the fulcrum of elastic deformation when the second contact portion is pressed against the substrate,
Have,
The first fulcrum portion and the second fulcrum portion are arranged at different positions.
The first fulcrum portion is configured to move the first contact portion in a direction away from the substrate when the first contact portion is pressed against the substrate.
When the second contact portion is pressed against the substrate, the second fulcrum portion moves the second contact portion in a direction away from the substrate and a direction in which the first contact portion approaches the substrate. Terminal fittings configured to move towards. 前記弾性接触片は、前記基板と前記第２接点部との当接後に前記基板の挿入力が最大値となり、前記基板が前記第１接点部のみと当接している段階では前記基板の挿入力が前記最大値に満たないように、前記第１支点部および前記第２支点部が配置されている
請求項１に記載の端子金具。 In the elastic contact piece, the insertion force of the substrate becomes the maximum value after the contact between the substrate and the second contact portion, and when the substrate is in contact with only the first contact portion, the insertion force of the substrate is reached. The terminal fitting according to claim 1, wherein the first fulcrum portion and the second fulcrum portion are arranged so that 前記弾性接触片を支持する筐体部を備え、
前記第１接点部および前記第２接点部は、押圧されていない自由状態において前記筐体部から露出するように配置されている
請求項１または２に記載の端子金具。 A housing portion that supports the elastic contact piece is provided.
The terminal fitting according to claim 1 or 2, wherein the first contact portion and the second contact portion are arranged so as to be exposed from the housing portion in a free state where they are not pressed. 前記筐体部は、前記第１接点部および前記第２接点部の押圧方向とは反対方向への移動を規制する規制片部を有する
請求項１から３のいずれか１項に記載の端子金具。 The terminal fitting according to any one of claims 1 to 3, wherein the housing portion has a regulation piece portion that restricts the movement of the first contact portion and the second contact portion in a direction opposite to the pressing direction. .. 一枚の板状部材の曲げ加工によって形成されている
請求項１から４のいずれか１項に記載の端子金具。 The terminal fitting according to any one of claims 1 to 4, which is formed by bending a single plate-shaped member. 請求項１から５のいずれか１項に記載の端子金具と、
前記端子金具が装着されるハウジング部と、
を備えるコネクタ。 The terminal fitting according to any one of claims 1 to 5.
The housing part to which the terminal fitting is mounted and
Connector with. カードエッジコネクタである
請求項６に記載のコネクタ。 The connector according to claim 6, which is a card edge connector.
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62500694A (en) * 1984-09-28 1987-03-19 ノ−ス　アメリカン　スペシヤリテイ−ズ　コ−ポレ−シヨン electrical connector
JPS6370675U (en) * 1986-10-29 1988-05-12
JPH0170276U (en) * 1987-10-30 1989-05-10
JPH06223665A (en) * 1993-01-21 1994-08-12 Amp Japan Ltd Receptacle contact
JPH11233183A (en) * 1998-02-13 1999-08-27 Fujitsu Takamisawa Component Ltd Jack connector, cassette connecting device and connector
JP2018022617A (en) * 2016-08-04 2018-02-08 株式会社オートネットワーク技術研究所 Card edge connector
JP2018022647A (en) * 2016-08-05 2018-02-08 株式会社オートネットワーク技術研究所 Terminal fitting and card edge connector
JP2018101577A (en) * 2016-12-21 2018-06-28 Ｃｏｎｎｅｃｔ Ｆｕｓｉｏｎ 合同会社 Contact terminal and manufacturing method of contact terminal

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62500694A (en) * 1984-09-28 1987-03-19 ノ−ス　アメリカン　スペシヤリテイ−ズ　コ−ポレ−シヨン electrical connector
JPS6370675U (en) * 1986-10-29 1988-05-12
JPH0170276U (en) * 1987-10-30 1989-05-10
JPH06223665A (en) * 1993-01-21 1994-08-12 Amp Japan Ltd Receptacle contact
JPH11233183A (en) * 1998-02-13 1999-08-27 Fujitsu Takamisawa Component Ltd Jack connector, cassette connecting device and connector
JP2018022617A (en) * 2016-08-04 2018-02-08 株式会社オートネットワーク技術研究所 Card edge connector
JP2018022647A (en) * 2016-08-05 2018-02-08 株式会社オートネットワーク技術研究所 Terminal fitting and card edge connector
JP2018101577A (en) * 2016-12-21 2018-06-28 Ｃｏｎｎｅｃｔ Ｆｕｓｉｏｎ 合同会社 Contact terminal and manufacturing method of contact terminal

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