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JP5124789B2 - Surface mount contact - Google Patents

Surface mount contact Download PDF

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Publication number
JP5124789B2
JP5124789B2 JP2008123635A JP2008123635A JP5124789B2 JP 5124789 B2 JP5124789 B2 JP 5124789B2 JP 2008123635 A JP2008123635 A JP 2008123635A JP 2008123635 A JP2008123635 A JP 2008123635A JP 5124789 B2 JP5124789 B2 JP 5124789B2
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leaf spring
contact
joint
spring portion
surface mount
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JP2009272237A (en
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智久 栗田
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Kitagawa Industries Co Ltd
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Kitagawa Industries Co Ltd
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Description

本発明は、表面実装コンタクトの技術分野に属する。   The present invention belongs to the technical field of surface mount contacts.

プリント基板のアースパターン上に取り付けられて、そのプリント基板とシャーシ等の導電部材とを導通させるための表面実装コンタクトがある。
特開2002−170615号公報(特許文献1)には、導電性の金属板を曲げ加工して製造されており、下面が半田付けのための接合面とされる接合部、その接合部の一端に連接された折返し部及び一端は折返し部に連接され他端は自由端とされて、該自由端側を接合部に接近、遠離させる方向に弾性変形可能な可動部であり、一部が接触導通のための接点部とされる可動部を備える表面実装コンタクトが開示されている。
特開2002−170615号公報
There is a surface mount contact mounted on the ground pattern of the printed circuit board for conducting the printed circuit board and a conductive member such as a chassis.
Japanese Patent Laid-Open No. 2002-170615 (Patent Document 1) is manufactured by bending a conductive metal plate, and a lower surface is a bonding surface for soldering, and one end of the bonding portion. The folded part and one end connected to each other are connected to the folded part and the other end is a free end. A surface mount contact including a movable part which is a contact part for conduction is disclosed.
JP 2002-170615 A

従来の表面実装コンタクトは、特許文献1に開示されているように、接合部、折返し部及び可動部にて略U字状のばね構造を形成し、可動部が横方向に変形するのを防止するために接合部の先端部に一対の側壁部を立設し、また側壁部の上部を折り曲げて形成した係止部で可動部の先端部を係止することで、略U字状のばね構造が広げ変形させられるのを防止していた。このため、接点部は係止部よりも上方に突出している必要があり、可動部の略中央部に逆U字状などの凸部を設けて、これを接点部としていた。   As disclosed in Patent Document 1, the conventional surface mount contact forms a substantially U-shaped spring structure at the joint portion, the folded portion, and the movable portion, and prevents the movable portion from being deformed in the lateral direction. In order to achieve this, a pair of side wall portions are erected at the front end portion of the joint portion, and the front end portion of the movable portion is locked by a locking portion formed by bending the upper portion of the side wall portion. The structure was prevented from being expanded and deformed. For this reason, the contact portion needs to protrude above the locking portion, and a convex portion such as an inverted U-shape is provided at a substantially central portion of the movable portion, which is used as the contact portion.

このような構造の表面実装コンタクトをシールドケース用の接触端子として使用する場合、シールドケースの端面と可動部の上面とで電気的に接触することになるが、シールドケースの内側面と表面実装コンタクトとを電気的に接触させることはできなかった。   When using a surface mount contact with such a structure as a contact terminal for a shield case, the end surface of the shield case and the upper surface of the movable part are in electrical contact, but the inner surface of the shield case and the surface mount contact Could not be brought into electrical contact with each other.

請求項1記載の表面実装コンタクトは、
下面が半田付けのための接合面とされる接合部と、
前記接合部の一端に連接された第1折返し部と、
一端が前記第1折返し部に連接されて下面を前記接合部の上面に対面させる第1板ばね部と、
前記接合部の両側部から1枚ずつ前記第1板ばね部に向かって立設された一対の係止片と、
一対の係止片のそれぞれに対応して前記第1板ばね部に連接され、前記第1板ばね部の上面が前記接合面と平行になる位置で前記係止片に係止されて前記第1板ばね部がそれ以上前記接合部から離れる側へ変位するのを阻む一対の引掛部と、
前記第1板ばね部の他端に連接された第2折返し部と、
前記一対の係止片の間隔よりも幅が狭くて、一端が前記第2折返し部に連接されて下面を前記第1板ばね部の上面に対面させる第2板ばね部と、
該第2板ばね部の先端部を前記第1板ばね部に向けて折り曲げて形成された接点部と、
該接点部に連接された変形規制部と
を備え、
前記接点部と前記接合部との距離を縮める方向の圧縮力が作用したときには、
先ず前記第1板ばね部が前記接合部へ接近変位し、前記第1板ばね部が前記接合部に接すると前記第2板ばね部が前記第1板ばね部に接近する変位を開始する
ことを特徴とする。
The surface mount contact according to claim 1,
A joint where the lower surface is a joint surface for soldering;
A first folded portion connected to one end of the joint portion;
A first leaf spring portion, one end of which is connected to the first folded portion, and the lower surface faces the upper surface of the joint portion;
A pair of locking pieces erected from the both sides of the joint portion one by one toward the first leaf spring portion;
Corresponding to each of the pair of locking pieces, the first plate spring part is connected to the first plate spring part, and the first plate spring part is locked to the locking piece at a position where the upper surface is parallel to the joint surface. A pair of hooking portions that prevent the leaf spring portion from being displaced further away from the joint portion;
A second folded portion connected to the other end of the first leaf spring portion;
A second leaf spring portion having a width narrower than an interval between the pair of locking pieces, one end connected to the second folded portion, and a lower surface facing the upper surface of the first leaf spring portion;
A contact portion formed by bending the tip of the second leaf spring portion toward the first leaf spring portion;
A deformation restricting portion connected to the contact portion,
When a compressive force acting in a direction to reduce the distance between the contact portion and the joint portion is applied,
First, the first leaf spring part is displaced closer to the joint part, and when the first plate spring part comes into contact with the joint part, the second leaf spring part starts to move closer to the first plate spring part. It is characterized by.

請求項1記載の表面実装コンタクトは、接合部の下面にてプリント基板に半田付けして使用される。
接合部の一端には第1折返し部が連接され、その第1折返し部には下面を接合部の上面に対面させる第1板ばね部の一端が連接されている。このため、第1板ばね部は弾性変形により、他端側を接合部に接近、遠離させる方向に変位可能である。
The surface mount contact according to claim 1 is used by soldering to the printed circuit board at the lower surface of the joint.
A first folded portion is connected to one end of the joined portion, and one end of a first leaf spring portion is connected to the first folded portion so that the lower surface faces the upper surface of the joined portion. For this reason, the 1st leaf | plate spring part is displaceable in the direction which makes the other end side approach and separate from a junction part by elastic deformation.

但し、一対の係止片が接合部の両側部から1枚ずつ第1板ばね部に向かって立設され、一対の引掛部が一対の係止片のそれぞれに対応して第1板ばね部に連接されており、第1板ばね部の上面が接合面と平行になる位置で引掛部が係止片に係止されて、第1板ばね部がそれ以上接合部から離れる側へ変位するのを阻むので、第1板ばね部は、その上面が接合面と平行になる位置を上昇限度とし、それよりも接合部側にて昇降変位できる。   However, a pair of locking pieces are erected from the both sides of the joint portion one by one toward the first leaf spring portion, and the pair of hooking portions correspond to each of the pair of locking pieces. And the hook portion is locked to the locking piece at a position where the upper surface of the first leaf spring portion is parallel to the joint surface, and the first leaf spring portion is displaced further away from the joint portion. Therefore, the first plate spring portion can be moved up and down on the side of the joint portion with the upper limit being a position where the upper surface is parallel to the joint surface.

また、第1板ばね部の他端には第2折返し部が連接され、第2板ばね部の一端が第2折返し部に連接されている。第2板ばね部は、一対の係止片の間隔よりも幅が狭くて、下面を第1板ばね部の上面に対面させている。第2板ばね部は、第2折返し部を支点として先端側を第1板ばね部に接近、遠離させる方向に変位可能である。   Further, the second folded portion is connected to the other end of the first leaf spring portion, and one end of the second leaf spring portion is connected to the second folded portion. The second leaf spring portion is narrower than the distance between the pair of locking pieces, and the lower surface faces the upper surface of the first leaf spring portion. The second leaf spring portion is displaceable in a direction in which the tip side approaches and moves away from the first leaf spring portion with the second folded portion as a fulcrum.

但し、第2板ばね部の先端部を第1板ばね部に向けて折り曲げて接点部が形成され、その接点部には変形規制部が連接されているので、第2板ばね部の変位は変形規制部が第1板ばね部に接するまでを限度とする。   However, the tip of the second leaf spring part is bent toward the first leaf spring part to form a contact part, and the deformation restricting part is connected to the contact part, so the displacement of the second leaf spring part is The limit is until the deformation restricting portion contacts the first leaf spring portion.

そして、接点部と接合部との距離を縮める方向の圧縮力が表面実装コンタクトに作用したときには、先ず第1板ばね部が接合部へ接近変位し、第1板ばね部が接合部に接すると第2板ばね部が第1板ばね部に接近する変位を開始する構成である。このようにするには、第1板ばね部のばね定数を第2板ばね部よりも小さく(この順番で変位するのに十分な差をもって両者のばね定数を設定)しておけばよい。   And when the compressive force of the direction which shortens the distance of a contact part and a junction part acts on a surface mounting contact, when a 1st leaf | plate spring part approaches to a junction part first and a 1st leaf | plate spring part contacts a junction part first, It is the structure which starts the displacement which a 2nd leaf | plate spring part approaches a 1st leaf | plate spring part. In order to do this, the spring constant of the first leaf spring portion may be smaller than that of the second leaf spring portion (the spring constants of the two are set with a sufficient difference to be displaced in this order).

なお、先ず第1板ばね部が接合部へ接近変位し、第1板ばね部が接合部に接すると第2板ばね部が第1板ばね部に接近する変位を開始するといっても、第2板ばね部は、第1板ばね部が接合部に接するまではまったく変位しないわけではなく、幾分かは弾性変形する。その第2板ばね部の変位は第1板ばね部の変位に比べれば僅かであるから、第1板ばね部が接合部に接すると第2板ばね部が第1板ばね部に接近する変位を開始すると言えるのである。   First, even if the first leaf spring portion is moved closer to the joint portion and the first leaf spring portion comes into contact with the joint portion, the second leaf spring portion starts to move closer to the first leaf spring portion. The two leaf springs are not displaced at all until the first leaf springs are in contact with the joints, and are somewhat elastically deformed. Since the displacement of the second leaf spring portion is small compared to the displacement of the first leaf spring portion, the displacement of the second leaf spring portion approaching the first leaf spring portion when the first leaf spring portion contacts the joint portion. Can be said to start.

圧縮力が作用したときには、先ず第1板ばね部が接合部へ接近変位し、第1板ばね部が接合部に接してその変位が限度になると第2板ばね部が第1板ばね部に接近する変位を開始する。つまり、第1板ばね部と第2板ばね部とで弾性反発力が2段階に変化するので、第1板ばね部による反発力によって接点部を被接触体(例えば基板等)に相対的に弱い力で接触させた後に、第2板ばね部の反発力による十分な接圧を接点部と被接触体との接触部分に加えることができる。また、圧縮変形したときに発生する第2板ばね部の接圧を第1板ばね部より強く設定しているので、被接触体(基板等)のたわみや変位を制限することとなり、表面実装コンタクトはスペーサ機能を兼ねることができる。   When a compressive force is applied, the first leaf spring portion is first moved closer to the joint portion, and when the first leaf spring portion comes into contact with the joint portion and the displacement becomes a limit, the second leaf spring portion becomes the first leaf spring portion. Start approaching displacement. That is, since the elastic repulsion force changes in two stages between the first leaf spring portion and the second leaf spring portion, the contact portion is relatively moved to the contacted body (for example, a substrate) by the repulsive force of the first leaf spring portion. After making contact with a weak force, a sufficient contact pressure due to the repulsive force of the second leaf spring portion can be applied to the contact portion between the contact portion and the contacted body. In addition, since the contact pressure of the second leaf spring part generated when it is compressed and deformed is set stronger than that of the first leaf spring part, the deflection and displacement of the contacted body (substrate etc.) will be limited, and surface mounting The contact can also serve as a spacer function.

携帯電話などの高密度薄型基板は僅かな力でも変形してしまう危険性があるため、高密度薄型基板に適用されるコンタクトには大きなストローク量と小さな接圧の両立が求められていたが、請求項1記載の表面実装コンタクトは上記の構成により、第1板ばね部と第2板ばね部とで大きなストローク量を確保し、また接圧を2段階に変化させることで、小さな接圧を実現できる。   A high-density thin substrate such as a mobile phone has a risk of being deformed even with a slight force. Therefore, a contact applied to the high-density thin substrate is required to have both a large stroke amount and a small contact pressure. The surface mount contact according to claim 1 has a small stroke pressure by securing a large stroke amount between the first leaf spring portion and the second leaf spring portion, and changing the contact pressure in two stages. realizable.

更に、請求項1記載の表面実装コンタクトは、板状の部材の端面を第1板ばね部に当接させ、その板状の部材の片面を第2板ばね部の先端部(接点部又は変形規制部)に接触させることができるので、請求項1記載の表面実装コンタクトをシールドケース用の接触端子として使用する場合に、シールドケースの端面と第1板ばね部の上面とで電気的に接触させ、且つシールドケースの内側面と第2板ばね部の先端部とを電気的に接触させることができる。   Furthermore, the surface mount contact according to claim 1 is configured such that the end face of the plate-like member is brought into contact with the first leaf spring part, and one side of the plate-like member is brought to the tip part of the second leaf spring part (contact part or deformation). When the surface mount contact according to claim 1 is used as a contact terminal for the shield case, electrical contact is made between the end surface of the shield case and the upper surface of the first leaf spring portion. And the inner surface of the shield case and the tip of the second leaf spring portion can be brought into electrical contact.

このようにシールドケースの端面と内側面とで電気的に接触させることが可能な構成であると、金属板のシールドケースだけでなく、めっき、蒸着、スパッタリングなどの導電性皮膜(金属皮膜)を付与したプラスチックシートを変形させて(例えば真空成型などで加工して)作ったシールドケースであっても、確実なグランディングをとることができる。具体的には、プラスチックシートの表面に導電性被膜加工を行った場合、シートの切断面は導電体と絶縁体が同時に見える状態である。よって、端面だけで導通をとると製品のばらつきを生じるおそれがある。しかし、上記の通り、端面だけでなく平面部にも電気的接触をさせることができるので確実なグランディングをとることができる。   In this way, when the structure can be brought into electrical contact between the end surface and the inner surface of the shield case, not only the shield case of the metal plate but also a conductive film (metal film) such as plating, vapor deposition, sputtering, etc. Even a shield case made by deforming the applied plastic sheet (for example, by vacuum forming) can ensure a reliable grounding. Specifically, when the conductive film is processed on the surface of the plastic sheet, the cut surface of the sheet is in a state where the conductor and the insulator can be seen at the same time. Therefore, there is a risk of variations in products if conduction is made only at the end face. However, as described above, since not only the end face but also the flat part can be brought into electrical contact, reliable grounding can be achieved.

請求項2記載の表面実装コンタクトは、請求項1記載の表面実装コンタクトにおいて、前記接合部からの立ち上がり高さは、前記第1折返し部の方が前記係止片よりも大きいことを特徴とする。   The surface mount contact according to claim 2 is characterized in that, in the surface mount contact according to claim 1, a rising height from the joint portion is larger in the first folded portion than in the locking piece. .

請求項2記載の表面実装コンタクトを接合部が半田付けされた面(下板)と接点部に接触した面(上板)との2面間で圧縮すると、上記のように接圧を2段階に変化させながら変形する。この圧縮による第2板ばね部が変位するが、この変位が最大になる(変形規制部が第1板ばね部に接する)より前に上板が第1折返し部に接触する。上板が第1折返し部に接触した後も圧縮が続けば、第1折返し部が第3のばねとして作用するので、接圧を3段階に変化させることができる。   When the surface mount contact according to claim 2 is compressed between two surfaces, that is, a surface where the joint portion is soldered (lower plate) and a surface where the contact portion is contacted (upper plate), the contact pressure is increased in two stages as described above. Deforms while changing. The second leaf spring portion is displaced by this compression, but the upper plate comes into contact with the first folded portion before the displacement becomes maximum (the deformation restricting portion comes into contact with the first leaf spring portion). If compression continues after the upper plate contacts the first folded portion, the first folded portion acts as a third spring, so that the contact pressure can be changed in three stages.

請求項3記載の表面実装コンタクトは、請求項1又は2記載の表面実装コンタクトにおいて、前記第2折返し部は、前記第1板ばね部側から前記第2板ばね部側になるに従って幅が狭くなる、テーパ状であることを特徴とする。このようにすると、第2板ばね部の幅を一対の係止片の間隔よりも狭くするのに好適である。   The surface mount contact according to claim 3 is the surface mount contact according to claim 1 or 2, wherein the width of the second folded portion becomes narrower from the first leaf spring portion side to the second leaf spring portion side. It is characterized by being tapered. If it does in this way, it is suitable for making the width | variety of a 2nd leaf | plate spring part narrower than the space | interval of a pair of locking piece.

請求項4記載の表面実装コンタクトは、請求項1、2又は3記載の表面実装コンタクトにおいて、前記第1板ばね部の上面が前記接合面と平行になっている状態では、前記第1板ばね部は前記接合部に接近する側に弾性変形しており、その弾性反発力で前記引掛部を前記係止片に当接させていることを特徴とする。   The surface mount contact according to claim 4 is the surface mount contact according to claim 1, 2 or 3, wherein the first leaf spring is in a state where the upper surface of the first leaf spring portion is parallel to the joint surface. The portion is elastically deformed to the side approaching the joint portion, and the hook portion is brought into contact with the locking piece by its elastic repulsive force.

すなわち、外力が及ぼされていない状態では、第1板ばね部の上面が接合面と平行になっているので、第1板ばね部の上面を自動実装機のノズル吸着面として使用することができる。   That is, in the state where no external force is exerted, since the upper surface of the first leaf spring part is parallel to the joining surface, the upper surface of the first leaf spring part can be used as the nozzle suction surface of the automatic mounting machine. .

次に、本発明の実施例等により発明の実施の形態を説明する。なお、本発明は下記の実施例等に限定されるものではなく、本発明の要旨を逸脱しない範囲でさまざまに実施できることは言うまでもない。
[実施例]
本実施例の表面実装コンタクト1は図1に示すとおりの構成である。なお、表面実装コンタクト1は、ばね性金属(例えばリン青銅、ベリリウム銅、SUS等)の板金製であり、導電性である。この板金の板厚は0.08mm、表面実装コンタクト1の全長(図1(a)における左右方向寸法)は3.0mm、幅(図1(a)における上下方向寸法)は1.0mm)である。
Next, embodiments of the present invention will be described based on examples of the present invention. The present invention is not limited to the following examples and the like, and it goes without saying that the present invention can be implemented in various ways without departing from the gist of the present invention.
[Example]
The surface mount contact 1 of the present embodiment has a configuration as shown in FIG. The surface mount contact 1 is made of a spring metal (for example, phosphor bronze, beryllium copper, SUS, etc.) and is conductive. The plate thickness of this sheet metal is 0.08 mm, the total length of the surface mount contact 1 (the horizontal dimension in FIG. 1A) is 3.0 mm, and the width (the vertical dimension in FIG. 1A) is 1.0 mm. is there.

表面実装コンタクト1の下部には接合部2が設けられている。接合部2の下面は平坦であり半田付けのための接合面2aとされる。
接合部2の両側部には小張出部3と大張出部4とが設けられ、それらに挟まれる凹部5においては、それぞれ1枚ずつの係止片6が立設されている。係止片6は接合部2に対してほぼ直角に立ち上がっている。2枚の係止片6は、ともにL字を倒立させた形状であるが、腕状部7の延出方向が小張出部3側を向いているため、互いに鏡像となる形状で対面している。
A junction 2 is provided below the surface mount contact 1. The lower surface of the joint portion 2 is flat and serves as a joint surface 2a for soldering.
A small overhanging portion 3 and a large overhanging portion 4 are provided on both sides of the joint portion 2, and one locking piece 6 is erected in each of the concave portions 5 sandwiched between them. The locking piece 6 stands up substantially at a right angle to the joint 2. Both of the two locking pieces 6 have an L-shaped inverted shape, but since the extending direction of the arm-like portion 7 faces the small protruding portion 3 side, they face each other in a shape that is a mirror image. Yes.

接合部2の大張出部4側になる一端は接合面2aに対してほぼ直角に折り曲げられ、その先で円弧状に折り曲げられて第1折返し部8とされている。第1折返し部8は、円弧状の部分の中ほどの頂部9にて接合部2からの距離(高さ)が最大となり、頂部9から下った端部には第1板ばね部11が連接している。   One end of the joint portion 2 on the side of the overhanging portion 4 is bent at a substantially right angle with respect to the joint surface 2a, and is bent into an arc shape at the tip to form a first folded portion 8. The first folded portion 8 has the maximum distance (height) from the joint portion 2 at the top portion 9 in the middle of the arc-shaped portion, and the first leaf spring portion 11 is connected to the end portion that descends from the top portion 9. doing.

第1板ばね部11は略長方形であるが、係止片6に対応して切欠12が設けられている。また切欠12に隣接するために相対的に凸になっている部分が引掛部13とされている。そして、係止片6が切欠12を通って第1板ばね部11の上面11aから突出しており、腕状部7を引掛部13の上方に位置させて引掛部13を係止している。この引掛部13が腕状部7(係止片6)に係止された状態では、第1板ばね部11の上面11aが接合面2aと平行になるように設計されている。また、第1板ばね部11は、接合部2に接近する側にわずかに弾性変形させられており、その弾性反発力で引掛部13を係止片6(腕状部7)に当接させている。引掛部13が係止片6(腕状部7)に係止されているため、第1板ばね部11は上面11aが接合面2aと平行になる位置を上昇限度とし、それよりも接合部2側にて昇降変位できる。   The first leaf spring portion 11 is substantially rectangular, but a notch 12 is provided corresponding to the locking piece 6. Further, a portion that is relatively convex because it is adjacent to the notch 12 is a hooking portion 13. And the locking piece 6 protrudes from the upper surface 11a of the 1st leaf | plate spring part 11 through the notch 12, The arm-shaped part 7 is located above the hook part 13, and the hook part 13 is locked. In a state where the hook portion 13 is locked to the arm-like portion 7 (locking piece 6), the upper surface 11a of the first leaf spring portion 11 is designed to be parallel to the joint surface 2a. Further, the first leaf spring portion 11 is slightly elastically deformed on the side approaching the joint portion 2, and the hook portion 13 is brought into contact with the locking piece 6 (arm-like portion 7) by its elastic repulsive force. ing. Since the hooking portion 13 is locked to the locking piece 6 (arm-like portion 7), the first leaf spring portion 11 has the upper limit at the position where the upper surface 11a is parallel to the bonding surface 2a, and the bonding portion is more than that. Can be displaced up and down on the 2 side.

第1板ばね部11の引掛部13側の端部には第2折返し部15が連接されている。第2折返し部15は第1板ばね部11側が広幅、それとは逆側が狭幅のテーパ状をなしており、狭幅の端には第2板ばね部16が連接されている。この第2板ばね部16の幅は一対の係止片6、6の間隔よりも狭い。第2折返し部15をテーパ状にするのは第2板ばね部16の幅を係止片6同士の間隔よりも狭くするのに好適である。   A second folded portion 15 is connected to the end of the first leaf spring portion 11 on the hooking portion 13 side. The second folded portion 15 has a taper shape in which the first leaf spring portion 11 side is wide and the opposite side is narrow, and the second leaf spring portion 16 is connected to the narrow end. The width of the second leaf spring portion 16 is narrower than the distance between the pair of locking pieces 6 and 6. The taper shape of the second folded portion 15 is suitable for making the width of the second leaf spring portion 16 narrower than the interval between the locking pieces 6.

第2板ばね部16は長方形であり、その先端部を第1板ばね部11に向けて折り曲げて形成された接点部17を備えている。また、接点部17には第1板ばね部11に向かって延出された変形規制部18が連接されている。   The second leaf spring portion 16 has a rectangular shape, and includes a contact portion 17 formed by bending a tip portion thereof toward the first leaf spring portion 11. Further, a deformation restricting portion 18 extending toward the first leaf spring portion 11 is connected to the contact portion 17.

この表面実装コンタクト1は、図2に示すように、プリント基板20のアースパターン(図示略)上に半田付けされて使用される。
上述した通り、引掛部13が係止片6の腕状部7に係止されている状態では
第1板ばね部11の上面11aが接合面2aと平行になっているので、第1板ばね部11の上面11aを吸着面として、自動実装機の吸着ノズルにて真空吸着することができる。つまり、表面実装コンタクト1の表面実装を自動実装機によって行うことができる。
As shown in FIG. 2, the surface mount contact 1 is used by being soldered onto a ground pattern (not shown) of the printed circuit board 20.
As described above, since the upper surface 11a of the first leaf spring portion 11 is parallel to the joint surface 2a in a state where the hook portion 13 is engaged with the arm-like portion 7 of the engagement piece 6, the first leaf spring Using the upper surface 11a of the part 11 as a suction surface, vacuum suction can be performed by a suction nozzle of an automatic mounting machine. That is, the surface mounting of the surface mounting contact 1 can be performed by an automatic mounting machine.

使用に際しては、被接触体(例えば他のプリント基板30)とプリント基板20で表面実装コンタクト1を挟むようにして、プリント基板30とプリント基板20との間隔を狭める。すると図2(a)に示すようにプリント基板30が第2板ばね部16の接点部17に接触し、接点部17と接合部2との距離を縮める方向の圧縮力が表面実装コンタクト1に作用する。   In use, the distance between the printed circuit board 30 and the printed circuit board 20 is reduced by sandwiching the surface mount contact 1 between the contacted object (for example, another printed circuit board 30) and the printed circuit board 20. Then, as shown in FIG. 2A, the printed circuit board 30 comes into contact with the contact portion 17 of the second leaf spring portion 16, and a compressive force in a direction to reduce the distance between the contact portion 17 and the joint portion 2 is applied to the surface mount contact 1. Works.

この圧縮力が表面実装コンタクト1に作用すると、図2(b)に示すように先ず第1板ばね部11が接合部2へ接近変位する。
図2(b)に示すように第1板ばね部11の第2折返し部15側の端部が接合部2に接すると、第2折返し部15を弾性変形させながら第2板ばね部16が第1板ばね部11に接近する変位を開始する。なお、厳密には第1板ばね部11が接合部2に接する以前にも、第2板ばね部16にはわずかではあるが第1板ばね部11に接近する変位が生じている。ただ、その第2板ばね部16の変位は第1板ばね部11の変位に比べればきわめて僅かであるから、第1板ばね部11が接合部2に接すると第2板ばね部16が第1板ばね部11に接近する変位を開始すると言ってもよい。
When this compressive force acts on the surface mount contact 1, first the first leaf spring portion 11 is moved closer to the joint portion 2 as shown in FIG.
As shown in FIG. 2B, when the end portion of the first leaf spring portion 11 on the second folding portion 15 side contacts the joint portion 2, the second leaf spring portion 16 is moved while elastically deforming the second folding portion 15. A displacement approaching the first leaf spring portion 11 is started. Strictly speaking, even before the first leaf spring portion 11 contacts the joint portion 2, the second leaf spring portion 16 is slightly displaced toward the first leaf spring portion 11. However, since the displacement of the second leaf spring portion 16 is very small compared to the displacement of the first leaf spring portion 11, when the first leaf spring portion 11 comes into contact with the joint portion 2, the second leaf spring portion 16 is moved to the second leaf spring portion 16. It may be said that the displacement approaching the 1 leaf spring portion 11 is started.

第2板ばね部16の幅が係止片6、6同士の間隔よりも狭いので、第2板ばね部16は係止片6、6間に入り込むようにして変位する(係止片6、6は第2板ばね部16の変位を阻害しない。)。   Since the width of the second leaf spring portion 16 is narrower than the interval between the locking pieces 6, 6, the second leaf spring portion 16 is displaced so as to enter between the locking pieces 6, 6 (the locking pieces 6, 6). 6 does not hinder the displacement of the second leaf spring portion 16).

第2板ばね部16の変位は、図2(c)に示すようにプリント基板30が係止片6の上端に接触するまで続く。
第1折返し部8の頂部9の接合部2からの距離(高さ)が接合部2からの係止片6の立ち上がり高さをわずかに上回っているので、図2(c)に示す状態になるとプリント基板30が頂部9に接触する。また、このときに変形規制部18の先端は第1板ばね部11に接触する寸前になる(設計上は)。しかし、変形規制部18は第1板ばね部11に接触することで第2板ばね部16の変位を規制するために設けてあるので、このときに変形規制部18の先端が第1板ばね部11に接触しても問題はない。
The displacement of the second leaf spring portion 16 continues until the printed circuit board 30 contacts the upper end of the locking piece 6 as shown in FIG.
Since the distance (height) of the top portion 9 of the first folded portion 8 from the joint portion 2 is slightly higher than the rising height of the locking piece 6 from the joint portion 2, the state shown in FIG. Then, the printed circuit board 30 comes into contact with the top 9. At this time, the tip of the deformation restricting portion 18 is just before contacting the first leaf spring portion 11 (in terms of design). However, since the deformation restricting portion 18 is provided for restricting the displacement of the second leaf spring portion 16 by contacting the first leaf spring portion 11, the tip of the deformation restricting portion 18 at this time is the first leaf spring. There is no problem even if it contacts the part 11.

このように、接点部17と接合部2との距離を縮めるように上下方向の圧縮力が作用したときには、先ず第1板ばね部11が接合部2へ接近変位し、第1板ばね部11が接合部2に接して変位が限度になると第2板ばね部16が第1板ばね部11に接近する変位を開始する。つまり、第1板ばね部11と第2板ばね部16とで弾性反発力が2段階に変化するので、第1板ばね部11による反発力によって接点部17を被接触体(プリント基板30)に相対的に弱い力で接触させた後に、第2板ばね部16の反発力による十分な接圧を接点部17と被接触体(プリント基板30)との接触部分に加えることができる。また、圧縮変形したときに発生する第2板ばね部16の接圧を第1板ばね部11より強く設定しているので、被接触体(プリント基板30)のたわみや変位を制限することとなり、表面実装コンタクト1はスペーサ機能を兼ねることができる。   As described above, when a compressive force in the vertical direction is applied so as to reduce the distance between the contact portion 17 and the joint portion 2, first, the first leaf spring portion 11 is moved closer to the joint portion 2, and the first leaf spring portion 11. Is in contact with the joint portion 2 and the displacement becomes the limit, the second leaf spring portion 16 starts to move closer to the first leaf spring portion 11. That is, since the elastic repulsion force changes in two stages between the first leaf spring portion 11 and the second leaf spring portion 16, the contact portion 17 is contacted by the repulsive force of the first leaf spring portion 11 (printed circuit board 30). After contacting with a relatively weak force, a sufficient contact pressure due to the repulsive force of the second leaf spring portion 16 can be applied to the contact portion between the contact portion 17 and the contacted body (printed circuit board 30). In addition, since the contact pressure of the second leaf spring portion 16 generated when it is compressed and deformed is set stronger than that of the first leaf spring portion 11, the deflection and displacement of the contacted body (printed circuit board 30) are limited. The surface mount contact 1 can also serve as a spacer function.

携帯電話などの高密度薄型基板は僅かな力でも変形してしまう危険性があるため、高密度薄型基板に適用されるコンタクトには大きなストローク量と小さな接圧の両立が求められていたが、この表面実装コンタクト1は上記の構成により、第1板ばね部11と第2板ばね部16とで大きなストローク量を確保し、また接圧を2段階に変化させることで、小さな接圧を実現できる。   A high-density thin substrate such as a mobile phone has a risk of being deformed even with a slight force. Therefore, a contact applied to the high-density thin substrate is required to have both a large stroke amount and a small contact pressure. With this configuration, the surface mount contact 1 secures a large stroke amount between the first leaf spring portion 11 and the second leaf spring portion 16, and realizes a small contact pressure by changing the contact pressure in two stages. it can.

また、図2(c)に示す状態にてプリント基板30のプリント基板20への接近が終了しなかったときには、図2(d)に示すように第1折返し部8が頂部9を圧迫されてつぶれるように弾性変形する。つまり、第1折返し部8が第3のばねとして作用するので、接圧を3段階に変化させることができる。   When the approach of the printed circuit board 30 to the printed circuit board 20 is not completed in the state shown in FIG. 2C, the first folded portion 8 is pressed against the top 9 as shown in FIG. Elastically deforms so that it collapses. That is, since the 1st folding | turning part 8 acts as a 3rd spring, a contact pressure can be changed in three steps.

更に、この表面実装コンタクト1は、板状の部材の端面を第1板ばね部11に当接させ、その板状の部材の片面を第2板ばね部16の先端部(変形規制部18)に接触させることができるので、この表面実装コンタクト1をシールドケース用の接触端子として使用する場合には、図3に示すように、シールドケース40の端面41と第1板ばね部11の上面11aとで電気的に接触させ、且つシールドケース40の内側面42と第2板ばね部16の先端部(変形規制部18)とを電気的に接触させることができる。   Further, the surface mount contact 1 has the end face of the plate-like member in contact with the first leaf spring portion 11, and the one face of the plate-like member is the tip of the second leaf spring portion 16 (deformation restricting portion 18). Therefore, when the surface mount contact 1 is used as a contact terminal for the shield case, as shown in FIG. 3, the end surface 41 of the shield case 40 and the upper surface 11a of the first leaf spring portion 11 are used. And the inner side surface 42 of the shield case 40 and the distal end portion (deformation restricting portion 18) of the second leaf spring portion 16 can be electrically contacted.

このようにシールドケース40の端面41と内側面42とで電気的に接触させることが可能な構成であると、金属板のシールドケース40だけでなく、めっき、蒸着、スパッタリングなどの導電性皮膜(金属皮膜)を付与したプラスチックシートを変形させて(例えば真空成型などで加工して)作ったシールドケース40であっても、確実なグランディングをとることができる。具体的には、プラスチックシートの表面に導電性被膜加工を行った場合、シートの切断面は導電体と絶縁体が同時に見える状態である。よって、端面41だけで導通をとると製品のばらつきを生じるおそれがある。しかし、上記の通り、端面41だけでなく内側面42となる平面部にも電気的接触をさせることができるので確実なグランディングをとることができる。   Thus, if it is the structure which can be made to contact electrically by the end surface 41 and the inner surface 42 of the shield case 40, not only the shield case 40 of a metal plate but conductive films (plating, vapor deposition, sputtering, etc.) Even if the shield case 40 is made by deforming (for example, processing by vacuum forming) a plastic sheet provided with a (metal film), reliable grounding can be achieved. Specifically, when the conductive film is processed on the surface of the plastic sheet, the cut surface of the sheet is in a state where the conductor and the insulator can be seen at the same time. Therefore, there is a risk of product variations if conduction is made only at the end face 41. However, as described above, since not only the end face 41 but also the flat portion serving as the inner face 42 can be brought into electrical contact, reliable grounding can be achieved.

実施例の表面実装コンタクトの平面図(a)、左側面図(b)、正面図(c)、右側面図(d)、底面図(e)及び斜視図(f)。The top view (a), left view (b), front view (c), right view (d), bottom view (e), and perspective view (f) of the surface mount contact of an Example. 実施例の表面実装コンタクトの使用時における変形の説明図。Explanatory drawing of the deformation | transformation at the time of use of the surface mount contact of an Example. 実施例の表面実装コンタクトをシールドケース用の接触端子として使用する例の説明図。Explanatory drawing of the example which uses the surface mount contact of an Example as a contact terminal for shield cases.

符号の説明Explanation of symbols

1・・・表面実装コンタクト、
2・・・接合部、
2a・・・接合面、
5・・・凹部、
6・・・係止片、
7・・・腕状部、
8・・・第1折返し部、
9・・・頂部、
11・・・第1板ばね部、
11a・・・上面、
12・・・切欠、
13・・・引掛部、
15・・・第2折返し部、
16・・・第2板ばね部、
17・・・接点部、
18・・・変形規制部。
1 ... Surface mount contact,
2 ... Junction part,
2a ... joint surface,
5 ... recess,
6 ... locking piece,
7 ... arm-shaped part,
8 ... 1st turning part,
9 ... top,
11 ... 1st leaf | plate spring part,
11a ... upper surface,
12 ... Notch,
13 ... hook part,
15 ... 2nd turning part,
16 ... 2nd leaf | plate spring part,
17 ... contact part,
18 ... Deformation restricting portion.

Claims (4)

下面が半田付けのための接合面とされる接合部と、
前記接合部の一端に連接された第1折返し部と、
一端が前記第1折返し部に連接されて下面を前記接合部の上面に対面させる第1板ばね部と、
前記接合部の両側部から1枚ずつ前記第1板ばね部に向かって立設された一対の係止片と、
一対の係止片のそれぞれに対応して前記第1板ばね部に連接され、前記第1板ばね部の上面が前記接合面と平行になる位置で前記係止片に係止されて前記第1板ばね部がそれ以上前記接合部から離れる側へ変位するのを阻む一対の引掛部と、
前記第1板ばね部の他端に連接された第2折返し部と、
前記一対の係止片の間隔よりも幅が狭くて、一端が前記第2折返し部に連接されて下面を前記第1板ばね部の上面に対面させる第2板ばね部と、
該第2板ばね部の先端部を前記第1板ばね部に向けて折り曲げて形成された接点部と、
該接点部に連接された変形規制部と
を備え、
前記接点部と前記接合部との距離を縮める方向の圧縮力が作用したときには、
先ず前記第1板ばね部が前記接合部へ接近変位し、前記第1板ばね部が前記接合部に接すると前記第2板ばね部が前記第1板ばね部に接近する変位を開始する
ことを特徴とする表面実装コンタクト。
A joint where the lower surface is a joint surface for soldering;
A first folded portion connected to one end of the joint portion;
A first leaf spring portion, one end of which is connected to the first folded portion, and the lower surface faces the upper surface of the joint portion;
A pair of locking pieces erected from the both sides of the joint portion one by one toward the first leaf spring portion;
Corresponding to each of the pair of locking pieces, the first plate spring part is connected to the first plate spring part, and the first plate spring part is locked to the locking piece at a position where the upper surface is parallel to the joint surface. A pair of hooking portions that prevent the leaf spring portion from being displaced further away from the joint portion;
A second folded portion connected to the other end of the first leaf spring portion;
A second leaf spring portion having a width narrower than an interval between the pair of locking pieces, one end connected to the second folded portion, and a lower surface facing the upper surface of the first leaf spring portion;
A contact portion formed by bending the tip of the second leaf spring portion toward the first leaf spring portion;
A deformation restricting portion connected to the contact portion,
When a compressive force acting in a direction to reduce the distance between the contact portion and the joint portion is applied,
First, the first leaf spring part is displaced closer to the joint part, and when the first plate spring part comes into contact with the joint part, the second leaf spring part starts to move closer to the first plate spring part. Surface mount contact characterized by.
請求項1記載の表面実装コンタクトにおいて、
前記接合部からの立ち上がり高さは、前記第1折返し部の方が前記係止片よりも大きい
ことを特徴とする表面実装コンタクト。
The surface mount contact according to claim 1,
The surface mount contact according to claim 1, wherein a rising height from the joint portion is larger in the first folded portion than in the locking piece.
請求項1又は2記載の表面実装コンタクトにおいて、
前記第2折返し部は、前記第1板ばね部側から前記第2板ばね部側になるに従って幅が狭くなる、テーパ状である
ことを特徴とする表面実装コンタクト。
The surface mount contact according to claim 1 or 2,
The surface mount contact according to claim 1, wherein the second folded portion has a tapered shape with a width becoming narrower from the first leaf spring portion side toward the second leaf spring portion side.
請求項1、2又は3記載の表面実装コンタクトにおいて、
前記第1板ばね部の上面が前記接合面と平行になっている状態では、前記第1板ばね部は前記接合部に接近する側に弾性変形しており、その弾性反発力で前記引掛部を前記係止片に当接させている
ことを特徴とする表面実装コンタクト。
In the surface mount contact according to claim 1, 2, or 3,
In a state where the upper surface of the first leaf spring portion is parallel to the joint surface, the first leaf spring portion is elastically deformed to the side approaching the joint portion, and the hooking portion is caused by its elastic repulsive force. A surface mount contact, wherein the contact piece is brought into contact with the locking piece.
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JP3321133B2 (en) * 2000-01-31 2002-09-03 北川工業株式会社 Conductive material
JP3442349B2 (en) * 2000-06-29 2003-09-02 イリソ電子工業株式会社 Terminal fitting
JP3450822B2 (en) * 2000-11-29 2003-09-29 イリソ電子工業株式会社 Terminal for electrical connection
JP2002170615A (en) * 2000-11-30 2002-06-14 Iriso Denshi Kogyo Kk Terminal for electric connection
JP4170278B2 (en) * 2004-03-19 2008-10-22 タイコエレクトロニクスアンプ株式会社 Contacts and electrical connectors
JP2007324029A (en) * 2006-06-02 2007-12-13 Iriso Denshi Kogyo Kk Terminal for electric connection, and connector using it

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020181711A (en) * 2019-04-25 2020-11-05 北川工業株式会社 Contact member
US11088484B2 (en) 2019-04-25 2021-08-10 Kitagawa Industries Co., Ltd. Contact member
JP7195610B2 (en) 2019-04-25 2022-12-26 北川工業株式会社 contact member

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