JP2013161640A - Electric connector - Google Patents

Electric connector Download PDF

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JP2013161640A
JP2013161640A JP2012022339A JP2012022339A JP2013161640A JP 2013161640 A JP2013161640 A JP 2013161640A JP 2012022339 A JP2012022339 A JP 2012022339A JP 2012022339 A JP2012022339 A JP 2012022339A JP 2013161640 A JP2013161640 A JP 2013161640A
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terminal
contact pieces
mating
contact
terminal side
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JP5706352B2 (en
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Takuya Suzuki
卓也 鈴木
Yoshihisa Yamada
善久 山田
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Hirose Electric Co Ltd
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Hirose Electric Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide an electric connector that is enhanced in reliability of an electric connection in hot-line insertion or extraction.SOLUTION: There is provided an electric connector having at least three terminals, the electric connector being characterized in that while an opposite terminal-side end of at least one terminal is positioned more on an opposite terminal side than an opposite terminal-side end of the other terminal with respect to a fitting direction, the opposite terminal-side end of at least the other terminal is positioned more on an opposite terminal side than the opposite terminal-side end of the other terminal with respect to the fitting direction, a terminal includes a base portion and a plurality of contact pieces extending from the base portion toward the opposite terminal side in the fitting direction, and an end of at least one of the contact pieces and an end of the other contact piece are at different positions with respect to the fitting direction.

Description

本発明は、電気コネクタに関する。特に、本発明は、活線挿抜における電気接続の信頼性を増すことができる電気コネクタに関する。   The present invention relates to an electrical connector. In particular, the present invention relates to an electrical connector that can increase the reliability of electrical connection in hot-swap.

従来、各種の電気機器の回路基板に、通電状態で挿抜される電気コネクタが開発されている。通電中に電気コネクタの挿抜（活線挿抜）を行うと、挿抜される端子間にアーク放電が発生することがある。アーク放電が発生すると、しばしば、端子の一部が炭化したり溶融したりする。活線挿抜を繰り返すことにより、相手端子との接触部分の全てが炭化すると、コネクタを接続しているにも関わらず、端子間で通電されないため、機器が不具合を起こすことがある。   2. Description of the Related Art Conventionally, electrical connectors have been developed that are inserted into and removed from circuit boards of various electrical devices while being energized. If the electrical connector is inserted and removed (hot wire insertion / removal) during energization, arc discharge may occur between the inserted and removed terminals. When arcing occurs, often a portion of the terminal is carbonized or melted. If all of the contact portions with the mating terminal are carbonized by repeating the hot-plugging, the device may fail because the terminals are not energized even though the connectors are connected.

例えば、特許文献１に開示されるコネクタであると、活線挿抜によるアーク放電により、端子の相手端子との接触部分が炭化するにつれて、接触抵抗が高くなる。最終的には、端子間が電気的に絶縁してしまう。また、複数の端子を有するコネクタを嵌合する際には、コネクタの相手コネクタに対する傾き具合に応じて、どの端子から順に接続するかが決まる。活線挿抜の場合には、端子の接続の順番によって、回路が不具合を起こしてしまうことがある。そのため、活線状態でコネクタの挿抜を繰り返しても、通電が維持され、回路の正常な接続を確保するコネクタの開発が望まれている。   For example, in the case of the connector disclosed in Patent Document 1, the contact resistance increases as the contact portion of the terminal with the mating terminal is carbonized due to arc discharge caused by hot plugging. Eventually, the terminals are electrically insulated. Further, when a connector having a plurality of terminals is fitted, it is determined which terminal is connected in order according to the inclination of the connector with respect to the mating connector. In the case of hot plugging / unplugging, the circuit may cause problems depending on the order of terminal connection. For this reason, it is desired to develop a connector that maintains energization and ensures a normal circuit connection even when the connector is repeatedly inserted and removed in a live line state.

特開２０１０−１２３３１２号公報JP 2010-1231312 A

本発明の目的は、活線挿抜における電気接続の信頼性を高めた電気コネクタを提供することである。   The objective of this invention is providing the electrical connector which improved the reliability of the electrical connection in hot-plugging.

本発明は、少なくとも三つの端子を備える電気コネクタであって、少なくとも一つの端子の相手端子側端部が、他の端子の相手端子側端部よりも嵌合方向に関して相手端子側に位置し、少なくとも一つの前記他の端子の相手端子側端部が、残りの端子の相手端子側端部よりも嵌合方向に関して相手端子側に位置し、前記端子は、基体部と、嵌合方向に沿って前記基体部から相手端子側に延びる複数の接触片を備え、少なくとも一つの前記接触片の端部と、他の前記接触片の端部とが、嵌合方向に関して異なる位置にある、ことを特徴とする電気コネクタを提供する。前記複数の接触片の少なくとも一対の接触片は、相手端子を把持できるように対向して配置されることが好ましい。また、対向する前記少なくとも一対の接触片の端部が、残りの接触片の端部よりも嵌合方向に関して相手端子側に位置することが一層好ましい。   The present invention is an electrical connector comprising at least three terminals, the mating terminal side end of at least one terminal is located on the mating terminal side with respect to the mating direction than the mating terminal side end of the other terminal, The mating terminal side end of at least one other terminal is located on the mating terminal side with respect to the mating direction with respect to the mating terminal side end of the remaining terminals, and the terminal extends along the mating direction with the base portion. A plurality of contact pieces extending from the base portion to the mating terminal side, and an end of at least one of the contact pieces and an end of the other contact piece are in different positions with respect to the fitting direction. An electrical connector is provided. It is preferable that at least a pair of contact pieces of the plurality of contact pieces are arranged to face each other so that the mating terminal can be gripped. Further, it is more preferable that the end portions of the at least one pair of contact pieces facing each other are located closer to the mating terminal side with respect to the fitting direction than the end portions of the remaining contact pieces.

前記複数の接触片が、四本の接触片から構成されており、前記四本の接触片のうちの二本の接触片の端部が、残りの接触片の端部よりも嵌合方向に関して相手端子側に位置するようにしてもよい。また、前記複数の接触片が、六本の接触片から構成されており、前記六本の接触片のうちの四本の接触片の端部が、残りの接触片の端部よりも嵌合方向に関して相手端子側に位置するようにしてもよい。   The plurality of contact pieces are composed of four contact pieces, and the end portions of the two contact pieces among the four contact pieces are more in relation to the fitting direction than the end portions of the remaining contact pieces. You may make it locate in the other party terminal side. Further, the plurality of contact pieces are composed of six contact pieces, and the end portions of the four contact pieces among the six contact pieces are fitted more than the end portions of the remaining contact pieces. You may make it locate in the other party terminal side regarding a direction.

さらに、前記複数の接触片が、六本の接触片から構成されており、前記六本の接触片のうちの二本の接触片の端部が、他の接触片の端部よりも嵌合方向に関して相手端子側にあり、前記他の接触片のうちの二本の接触片の端部が、前記他の接触片のうちの残りの接触片の端部よりも嵌合方向に関して相手端子側に位置するようにしてもよい。   Further, the plurality of contact pieces are composed of six contact pieces, and the end portions of the two contact pieces among the six contact pieces are fitted more than the end portions of the other contact pieces. The end of the two contact pieces among the other contact pieces is on the counterpart terminal side with respect to the fitting direction with respect to the end of the remaining contact pieces of the other contact pieces. You may make it locate in.

前記少なくとも一つの端子の相手端子側端部と前記他の前記端子の相手端子側端部との間の嵌合方向に関する距離が、前記他の前記端子の相手端子側端部と前記残りの端子の相手端子側端部との間の距離よりも長いことが好ましい。   The distance in the fitting direction between the other terminal side end of the at least one terminal and the other terminal side end of the other terminal is equal to the other terminal side end of the other terminal and the remaining terminal. It is preferable that it is longer than the distance between the other terminal side end.

本発明は、各端子の端部の位置が異なるため、例えば、グラウンドから接続を開始するなど、接続する電気回路に合わせて、端子と相手端子との接続の順番を固定することができる。また、端子が備える複数の接触片の端部が、嵌合方向に関して異なる位置にあるため、活線挿抜によってアーク放電が発生しても、相手端子に近い位置に端部がある接触片が炭化するのみで、相手端子から遠い位置に端部がある接触片によって、電気的接続を維持することが可能となる。   In the present invention, since the positions of the end portions of the terminals are different, the order of connection between the terminal and the counterpart terminal can be fixed in accordance with the electric circuit to be connected, such as starting connection from the ground. In addition, since the end portions of the plurality of contact pieces included in the terminal are at different positions with respect to the fitting direction, even if arc discharge occurs due to hot plugging, the contact piece having the end portions close to the mating terminal is carbonized. The electrical connection can be maintained by the contact piece having the end at a position far from the counterpart terminal.

本発明の一実施形態である電気コネクタ及び相手コネクタを示す斜視図である。It is a perspective view which shows the electrical connector which is one Embodiment of this invention, and a mating connector. 本発明の一実施形態である電気コネクタ及び相手コネクタの断面図である。It is sectional drawing of the electrical connector which is one Embodiment of this invention, and a mating connector. 図２に示される電気コネクタの断面図の拡大図である。It is an enlarged view of sectional drawing of the electrical connector shown by FIG. 図１に示される電気コネクタが有する端子及び相手コネクタが有する相手端子を示す平面図である。It is a top view which shows the terminal which the electrical connector shown by FIG. 1 has, and the other party terminal which an other party connector has. 図４に示される端子を示す斜視図である。It is a perspective view which shows the terminal shown by FIG. 図４に示される端子の展開図である。FIG. 5 is a development view of the terminals shown in FIG. 4. 本発明の一実施形態に用いられる端子を示す平面図である。It is a top view which shows the terminal used for one Embodiment of this invention. 本発明の一実施形態に用いられる端子を示す平面図である。It is a top view which shows the terminal used for one Embodiment of this invention.

以下に図面を参照して、本発明の一実施形態について説明する。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

図１は、本発明の実施形態である電気コネクタ１００と、コネクタ１００に嵌合する相手コネクタ２００との嵌合前の状態を示す斜視図である。   FIG. 1 is a perspective view showing a state before fitting between an electrical connector 100 according to an embodiment of the present invention and a mating connector 200 fitted into the connector 100.

コネクタ１００のハウジング１０４は、略円柱形であり、通常の場合には、樹脂によって形成される。ハウジング１０４は、５つの嵌合方向に貫通した端子保持孔１０８を有する。コネクタ１００は、端子保持孔１０８の各々に計５つの端子を備える。コネクタ１００は、５つの端子を備えるが、本発明では、必要に応じて、３つ以上であれば、別の個数の端子を、コネクタが備えるようにしてもよい。端子は、端子保持孔１０８の嵌合側と逆側の開口から挿入され、端子保持孔１０８内に収納される。相手コネクタ２００のハウジング２０４は、略円柱形であり、通常の場合には、樹脂によって形成される。相手コネクタ２００のハウジング２０４は、コネクタ１００のハウジング１０４が有する端子保持孔１０８の数に合わせて、５つの嵌合方向に貫通した相手端子保持孔２０８を有する。相手コネクタ２００は、相手端子保持孔２０８の各々に相手端子を有する。また、相手コネクタ２００は、ロック溝２１６を嵌合口２１２の外面に有する。ロック溝２１６は、コネクタ１００の嵌合口１１２の内側に供えられた突起部（図示せず）を案内して、該突起部と嵌め合い、両コネクタの嵌合を固定することができる。なお、通常の場合には、両コネクタ１００、２００の嵌合部分と逆側に、ケーブルが接続されているが、図１では、省略されている。   The housing 104 of the connector 100 has a substantially cylindrical shape, and is usually formed of resin. The housing 104 has terminal holding holes 108 penetrating in five fitting directions. The connector 100 includes a total of five terminals in each of the terminal holding holes 108. The connector 100 includes five terminals. However, in the present invention, if necessary, the connector may include another number of terminals as long as the number is three or more. The terminal is inserted from the opening on the opposite side to the fitting side of the terminal holding hole 108 and is accommodated in the terminal holding hole 108. The housing 204 of the mating connector 200 has a substantially cylindrical shape, and is usually formed of resin. The housing 204 of the mating connector 200 has five mating terminal holding holes 208 penetrating in the fitting direction according to the number of terminal holding holes 108 of the housing 104 of the connector 100. The mating connector 200 has a mating terminal in each mating terminal holding hole 208. Further, the mating connector 200 has a lock groove 216 on the outer surface of the fitting port 212. The lock groove 216 can guide a protrusion (not shown) provided inside the fitting port 112 of the connector 100 and fit with the protrusion to fix the fitting of both connectors. In a normal case, a cable is connected to the side opposite to the fitting portion of both connectors 100 and 200, but is omitted in FIG.

図２は、図１に示されるコネクタ１００と相手コネクタ２００における３つの端子保持孔１０８及び３つの相手端子保持孔２０８の中心を通る断面図である。端子３００は、外面に、嵌合方向の相手端子側からケーブル側に向かうにつれて、嵌合方向に垂直の径方向外側に広がるテーパーを持つ係止片３２０を備える。また、コネクタ１００は、端子保持孔１０８の内壁から突出した端子係止片（図示せず）を有する。端子３００が端子保持孔１０８に挿入されるにつれて、端子係止片が、テーパーに接触し、係止片３２０を径方向内側に押し込む。係止片３２０の全体が、端子係止片よりも嵌合方向相手端子側に移動すると、係止片３２０が弾性によって元の位置に戻り、係止片３２０が端子係止片と係合し、端子３００の嵌合方向ケーブル側への移動が規制される。また、端子３００は、突起部（図示せず）を有し、突起部の前端部が、端子保持孔１０８の内壁から内側に突出した内周部のケーブル側の面１２０にと当接し、嵌合方向相手端子側への移動が規制される。また、相手端子３２４も、端子３００と同様に、相手端子保持孔２０８内に収納され、固定される。コネクタ１００では、コネクタ係止片及び内周部のケーブル側の面１２０を用いて、係止片３２０を固定することによって、端子３００を端子保持孔１０８内に固定しているが、本発明では、別の手段を用いて、端子３００を固定してもよい。   2 is a cross-sectional view passing through the centers of the three terminal holding holes 108 and the three counterpart terminal holding holes 208 in the connector 100 and the mating connector 200 shown in FIG. The terminal 300 includes, on the outer surface, a locking piece 320 having a taper that extends outward in the radial direction perpendicular to the fitting direction as it goes from the mating terminal side in the fitting direction to the cable side. The connector 100 also has a terminal locking piece (not shown) protruding from the inner wall of the terminal holding hole 108. As the terminal 300 is inserted into the terminal holding hole 108, the terminal locking piece comes into contact with the taper and pushes the locking piece 320 inward in the radial direction. When the entire locking piece 320 moves to the mating terminal side of the terminal locking piece, the locking piece 320 returns to its original position due to elasticity, and the locking piece 320 engages with the terminal locking piece. The movement of the terminal 300 toward the cable in the fitting direction is restricted. In addition, the terminal 300 has a protrusion (not shown), and the front end of the protrusion is in contact with the cable-side surface 120 of the inner peripheral portion that protrudes inward from the inner wall of the terminal holding hole 108. Movement to the mating direction counterpart terminal side is restricted. Also, the counterpart terminal 324 is housed and fixed in the counterpart terminal holding hole 208 in the same manner as the terminal 300. In the connector 100, the terminal 300 is fixed in the terminal holding hole 108 by fixing the locking piece 320 by using the connector locking piece and the cable-side surface 120 of the inner peripheral portion. The terminal 300 may be fixed using another means.

図３に、コネクタ１００の拡大図を示す。図３に示される鎖線が示すように、コネクタ１００は、同一形状からなる端子３００の相手端子側端部３０９の嵌合方向位置が異なるように、端子３００を固定する。すなわち、端子３２８の相手端子側端部３３０が、端子３３２の相手端子側端部３３４よりも嵌合方向に関して相手端子側に位置し、端子３３２の相手端子側端部３３４が、端子３３６の相手端子側端部３３８よりも嵌合方向に関して相手端子側に位置する。コネクタ１００は、端子３００の相手端子側端部３０９の嵌合方向位置が３段階に異なるように、端子３００を固定するが、４段階以上であってもよい。コネクタ係止片及び、端子保持孔１０８の径が小さくなる内周部のケーブル側の面１２０を嵌合方向に関して異なる位置に形成して、同一の端子３００を使っても、端部３０９の嵌合方向に関する位置が異なるように、端子３００を固定することができる。   FIG. 3 shows an enlarged view of the connector 100. 3, the connector 100 fixes the terminal 300 so that the mating terminal side end portion 309 of the terminal 300 having the same shape has different fitting direction positions. That is, the mating terminal side end 330 of the terminal 328 is positioned on the mating terminal side with respect to the mating direction with respect to the mating terminal side end 334 of the terminal 332, and the mating terminal side end 334 of the terminal 332 is the mating terminal of the terminal 336. It is located on the mating terminal side with respect to the fitting direction from the terminal side end portion 338. The connector 100 fixes the terminal 300 so that the mating terminal side end portion 309 of the terminal 300 is fitted in three stages, but may have four or more stages. Even if the same terminal 300 is used even if the connector locking piece and the cable-side surface 120 of the inner peripheral portion where the diameter of the terminal holding hole 108 is reduced are formed at different positions with respect to the fitting direction, The terminal 300 can be fixed so that the positions in the mating direction are different.

図３に示されるように、端子３００の端部３０９の嵌合方向位置が３段階に異なる場合には、例えば、最も相手端子側に相手端子側端部３３０が位置する端子３２８をグラウンド用に、次に相手端子側に相手端子側端部３３４が位置する端子３３２を電源用に、最もケーブル接続側に相手端子側端部３０９が位置する端子３００を信号用に用いることで、コネクタ１００及び相手コネクタ２００を介して接続する二つの回路を、グラウンド、電源、信号の順に電気的に接続することができる。上記の順番で、二つの回路が電気的に接続することによって、例えば、信号のみが接続する状態になる等の回路の電位が不安定になることによる回路の誤動作、電子部品の破損等の不具合を防ぐことができる。   As shown in FIG. 3, when the fitting direction position of the end portion 309 of the terminal 300 is different in three stages, for example, the terminal 328 in which the mating terminal side end portion 330 is located closest to the mating terminal side is used for the ground. Next, by using the terminal 332 having the mating terminal side end 334 on the mating terminal side for the power supply and using the terminal 300 having the mating terminal side end 309 closest to the cable connection side for the signal, the connector 100 and Two circuits connected through the mating connector 200 can be electrically connected in the order of ground, power supply, and signal. When the two circuits are electrically connected in the above order, for example, malfunction of the circuit due to unstable circuit potential, such as a state in which only the signal is connected, damage of electronic components, etc. Can be prevented.

グラウンド用端子３２８の相手端子側端部３３０と電源用端子３３２の相手端子側端部３３４との間の、嵌合方向に関する距離ＧＰは、電源用端子３３２の相手端子側端部３３４と信号用端子３３６の相手端子側端部３３８との間の、嵌合方向に関する距離ＰＳよりも長い。距離ＧＰが、距離ＰＳよりも長いことによって、コネクタ１００が相手コネクタ２００の嵌合方向に対して斜めから嵌合を開始した場合であっても、グラウンド用端子１２４を、グラウンド用端子３２８と接続する相手端子３２４に、他の端子３３２、３３６の接続よりも早く接続させることができる。仮に、距離ＧＰが、距離ＰＳと同じか、距離ＰＳよりも短いと、斜め方向から嵌合した場合に、電源用端子３３２に接続する相手端子３２４が、電源用端子３３２に最初に接触してしまい、回路が不具合を起こすことがある。   The distance GP in the fitting direction between the mating terminal side end 330 of the ground terminal 328 and the mating terminal side end 334 of the power supply terminal 332 is equal to that of the mating terminal side end 334 of the power supply terminal 332 and the signal. The distance between the terminal 336 and the mating terminal side end 338 is longer than the distance PS in the fitting direction. When the distance GP is longer than the distance PS, the ground terminal 124 is connected to the ground terminal 328 even when the connector 100 starts to be engaged obliquely with respect to the mating direction of the mating connector 200. The other terminal 324 can be connected earlier than the connection of the other terminals 332 and 336. If the distance GP is the same as or shorter than the distance PS, the mating terminal 324 connected to the power supply terminal 332 first contacts the power supply terminal 332 when fitted from an oblique direction. As a result, the circuit may malfunction.

図４は、端子３００及び相手端子３２４を示す平面図である。また、図５は、端子３００の斜視図である。端子３００は、例えば、図６の端子展開図が示すように金属シート材料を打ち抜き、嵌合方向周りに丸めて、形成することが可能である。図４に示す端子３００は、ケーブル（図示しない）が接続されるケーブル接続部３１６にスリーブ３１８を備える。ケーブル接続部３１６は、圧着などによって、ケーブルと接続する。   FIG. 4 is a plan view showing the terminal 300 and the mating terminal 324. FIG. 5 is a perspective view of the terminal 300. The terminal 300 can be formed, for example, by punching a metal sheet material and rounding it around the fitting direction as shown in the terminal development view of FIG. A terminal 300 shown in FIG. 4 includes a sleeve 318 in a cable connection portion 316 to which a cable (not shown) is connected. The cable connecting portion 316 is connected to the cable by crimping or the like.

端子３００は、基体部３０４と、基体部３０４から嵌合方向に沿って相手端子側に延びる４本の接触片３０８ａ、３０８ｂ、３１２ａ、３１２ｂとを備える。端子３００は、金属製であり、導電性を持つ。   The terminal 300 includes a base portion 304 and four contact pieces 308a, 308b, 312a, and 312b extending from the base portion 304 to the mating terminal side along the fitting direction. The terminal 300 is made of metal and has conductivity.

４本の接触片３０８ａ、３０８ｂ、３１２ａ、３１２ｂは、２本（１対）の長手の接触片３０８ａ、３０８ｂと、２本（１対）の短手の接触片３１２ａ、３１２ｂとで構成される。接触片３０８ａ、３０８ｂ、３１２ａ、３１２ｂの各々は、基体部３０４とつながっていて、接触片３０８ａ、３０８ｂ、３１２ａ、３１２ｂ同士は、つながっていない。接触片３０８ａ、３０８ｂ、３１２ａ、３１２ｂの幅は、嵌合方向に沿って、基体部３０４側から相手端子３２４側に向けて、徐々に狭まっている。また、各接触片３０８ａ、３０８ｂ、３１２ａ、３１２ｂの内壁によって形成される内径は、嵌合方向に沿って、基体部３０４側から相手端子３２４側に向けて、徐々に小さくなり、先細りになっているが、接触片３０８ａ、３０８ｂ、３１２ａ、３１２ｂの端部３０９ａ、３０９ｂ、３１３ａ、３１３ｂ近傍では、端部３０９ａ、３０９ｂ、３１３ａ、３１３ｂに向けて径方向内側から外側に広がる案内部３１０ａ、３１０ｂ、３１４ａ、３１４ｂが形成されている。案内部３１０ａ、３１０ｂ、３１４ａ、３１４ｂによって、両端子３００、３２４の中心がずれている状態で嵌合を開始した場合であっても、相手端子３２４の相手接触部３２８を端子３００の中心側へ案内することができる。案内部３１０ａ、３１０ｂ、３１４ａ、３１４ｂと他の内壁部分との境界辺である接触部３１１ａ、３１１ｂ、３１５ａ、３１５ｂは、接触片３０８ａ、３０８ｂ、３１２ａ、３１２ｂにおいて最も径方向内側に位置し、また、接触部３１１ａ、３１１ｂ、３１５ａ、３１５ｂによって構成される内径は、相手端子接触部３２８の径よりも小さい。そのため、相手端子３２４を、端子３００に挿入すると、相手端子３２４の接触部３２８が、案内部３１０ａ、３１０ｂ、３１４ａ、３１４ｂを介して、接触片３０８ａ、３０８ｂ、３１２ａ、３１２ｂを径方向外側に押し広げていき、最終的な嵌合状態では、接触部３１１ａ、３１１ｂ、３１５ａ、３１５ｂと接触するようになる。接触片３０８ａ、３０８ｂ、３１２ａ、３１２ｂの弾性によって、接触部３１１ａ、３１１ｂ、３１５ａ、３１５ｂから相手端子接触部３２８に対して、径方向内側への押圧が生じるので、対向する２対の接触片３０８ａ、３０８ｂ、３１２ａ、３１２ｂは、相手端子３２４を把持することができる。また、接触部３１１ａ、３１１ｂ、３１５ａ、３１５ｂは、嵌合時において、相手端子３２４の相手接触部３２８と接触するため、両端子３００、３２４を導通させる役割を果たす。   The four contact pieces 308a, 308b, 312a, 312b are composed of two (one pair) long contact pieces 308a, 308b and two (one pair) short contact pieces 312a, 312b. . Each of the contact pieces 308a, 308b, 312a, 312b is connected to the base portion 304, and the contact pieces 308a, 308b, 312a, 312b are not connected to each other. The widths of the contact pieces 308a, 308b, 312a, 312b are gradually narrowed from the base portion 304 side toward the mating terminal 324 side along the fitting direction. In addition, the inner diameter formed by the inner wall of each contact piece 308a, 308b, 312a, 312b gradually decreases and tapers from the base portion 304 side toward the mating terminal 324 side along the fitting direction. However, in the vicinity of the end portions 309a, 309b, 313a, and 313b of the contact pieces 308a, 308b, 312a, and 312b, guide portions 310a and 310b that spread from the inside in the radial direction toward the end portions 309a, 309b, 313a, and 313b, 314a and 314b are formed. Even when fitting is started in a state where the centers of both terminals 300 and 324 are shifted by the guide portions 310a, 310b, 314a, and 314b, the mating contact portion 328 of the mating terminal 324 is moved to the center side of the terminal 300. I can guide you. Contact portions 311a, 311b, 315a, and 315b, which are boundaries between the guide portions 310a, 310b, 314a, and 314b and other inner wall portions, are located on the innermost radial direction in the contact pieces 308a, 308b, 312a, and 312b, and The inner diameter formed by the contact portions 311a, 311b, 315a, and 315b is smaller than the diameter of the mating terminal contact portion 328. Therefore, when the mating terminal 324 is inserted into the terminal 300, the contact portion 328 of the mating terminal 324 pushes the contact pieces 308a, 308b, 312a, 312b radially outward via the guide portions 310a, 310b, 314a, 314b. In the final fitted state, the contact portions 311a, 311b, 315a, and 315b come into contact. Due to the elasticity of the contact pieces 308a, 308b, 312a, 312b, the contact portions 311a, 311b, 315a, 315b are pressed radially inward against the mating terminal contact portion 328, so that the two pairs of contact pieces 308a facing each other , 308b, 312a, 312b can hold the mating terminal 324. Further, the contact portions 311a, 311b, 315a, and 315b contact the mating contact portion 328 of the mating terminal 324 during fitting, and thus serve to conduct both terminals 300 and 324.

端子３００では、対向する２対の接触片３０８ａ、３０８ｂ、３１２ａ、３１２ｂにより、相手端子３２４を把持しているが、対向する１対の接触片によって相手端子３２４を把持してもよい。その場合には、二つの長手の接触片が、対向して配置されることが好ましい。対向する長手の接触片が、相手端子３２４の端部から離れた深い位置で相手端子３２４を把持するため、一度接続した端子が外れにくくなる。   In the terminal 300, the mating terminal 324 is gripped by the two pairs of contact pieces 308a, 308b, 312a, and 312b facing each other, but the mating terminal 324 may be gripped by the pair of facing contact pieces. In that case, it is preferable that two longitudinal contact pieces are arranged to face each other. Since the opposing long contact pieces grip the mating terminal 324 at a deep position away from the end of the mating terminal 324, the terminal once connected is difficult to disconnect.

長手の接触片３０８ａ、３０８ｂの端部３０９ａ、３０９ｂは、端子３００全体の相手端子側端部３０９であり、短手の接触片３１２ａ、３１２ｂの端部３１３ａ、３１３ｂよりも嵌合方向に関して相手端子側に位置する。そのため、端子３００と相手端子３２４と活線状態で接続する際に、アーク放電が発生しても、短手の接触片３１２ａ、３１２ｂよりも先に、長手の接触片３０８ａ、３０８ｂが相手端子３２４に近づくため、長手の接触片３０８ａ、３０８ｂと相手端子３２４との間でアーク放電が発生する。従って、短手の接触片３１２ａ、３１２ｂは、アークによる悪影響を受けることなく、短手の接触片３１２ａ、３１２ｂによって、端子３００と相手端子３２４との電気的接続が確保される。逆に活線状態で、端子３００から相手端子３２４を外す場合であっても、長手の接触片３０８ａ、３０８ｂが、短手のコンタクト３１２ａ、３１２ｂよりも後まで相手端子と接触し続けているため、アーク放電は、長手の接触片３０８ａ、３０８ｂと相手端子との間で発生し、短手の接触片３１２ａ、３１２ｂは、アーク放電から保護される。図４に示す端子３００は、接触片の長さを２種類にすることによって、接触片の端部の嵌合方向に関する位置を２段階にしているが、他の形状を採用して、接触片の端部の嵌合方向における位置が異なるようにしてもよい。例えば、接触片の長さを均一にし、基体部との嵌合方向位置を異なる位置にして、接触片の端部の位置を異なるようにすることによっても、上記効果を得ることができる。   End portions 309a and 309b of the long contact pieces 308a and 308b are counterpart terminal side end portions 309 of the entire terminal 300, and are mating terminals with respect to the fitting direction than the end portions 313a and 313b of the short contact pieces 312a and 312b. Located on the side. Therefore, even when arc discharge occurs when connecting the terminal 300 and the mating terminal 324 in a live line state, the long contact pieces 308a and 308b are connected to the mating terminal 324 before the short contact pieces 312a and 312b. Therefore, arc discharge occurs between the long contact pieces 308a and 308b and the mating terminal 324. Therefore, the short contact pieces 312a and 312b are not adversely affected by the arc, and the electrical connection between the terminal 300 and the mating terminal 324 is ensured by the short contact pieces 312a and 312b. Conversely, even when the mating terminal 324 is removed from the terminal 300 in the live line state, the long contact pieces 308a and 308b continue to contact the mating terminal until after the short contacts 312a and 312b. The arc discharge occurs between the long contact pieces 308a and 308b and the mating terminal, and the short contact pieces 312a and 312b are protected from the arc discharge. The terminal 300 shown in FIG. 4 uses two types of contact piece lengths, so that the positions of the end portions of the contact pieces are related to the fitting direction in two stages. The positions of the end portions in the fitting direction may be different. For example, the above-described effect can also be obtained by making the length of the contact piece uniform, making the fitting direction position with the base portion different, and making the position of the end of the contact piece different.

端子３００は、雌型の端子である。雌型の端子の接触片は、雄型の端子の接触片よりも大きいことが通常であるため、雌型の端子の端部の位置を異なるようにすれば、端子接続時に相手端子の接触片に誤って引っ掛けることによる塑性変形が生じにくいが、本発明に係る端子は、雄型の端子であってもよい。従って、相手端子とは、本発明の端子が雌型の場合には、雄型の端子を指し、本発明の端子が雄型の場合には、雌型の端子を指す。   The terminal 300 is a female terminal. Since the contact piece of the female terminal is usually larger than the contact piece of the male terminal, if the position of the end of the female terminal is made different, the contact piece of the mating terminal is connected when the terminal is connected. However, the terminal according to the present invention may be a male terminal. Accordingly, the mating terminal refers to a male terminal when the terminal of the present invention is female, and refers to a female terminal when the terminal of the present invention is male.

図７に本発明に用いられる端子の別の形態である端子を示す。端子４００は、基体部４０４と、基体部４０４から嵌合方向に沿って相手端子側に延びる６本の接触片４０８ａ、４０８ｂ、４０８ｃ、４０８ｄ、４１２ａ、４１２ｂとを備える。各接触片４０８ａ、４０８ｂ、４０８ｃ、４０８ｄ、４１２ａ、４１２ｂの形状は、端子３００の接触片３０８ａ、３０８ｂ、３１２ａ、３１２ｂと同様である。基体部４０４のケーブル側にあるケーブル接続部４１６は、圧着などによって、ケーブルと接続することができる。   FIG. 7 shows a terminal which is another form of the terminal used in the present invention. The terminal 400 includes a base portion 404 and six contact pieces 408a, 408b, 408c, 408d, 412a, 412b extending from the base portion 404 toward the mating terminal along the fitting direction. The shape of each contact piece 408a, 408b, 408c, 408d, 412a, 412b is the same as that of the contact piece 308a, 308b, 312a, 312b of the terminal 300. The cable connecting portion 416 on the cable side of the base portion 404 can be connected to the cable by crimping or the like.

６本の接触片４０８ａ、４０８ｂ、４０８ｃ、４０８ｄ、４１２ａ、４１２ｂは、４本（２対）の長手の接触片４０８ａ、４０８ｂ、４０８ｃ、４０８ｄと、２本（１対）の短手の接触片４１２ａ、４１２ｂとで構成されている。コネクタ３００と同様に、長手の接触片４０８ａ、４０８ｂ、４０８ｃ、４０８ｄの端部４０９ａ、４０９ｂ、４０９ｃ、４０９ｄは、短手の接触片４１２ａ、４１２ｂの端部４１３ａ、４１３ｂよりも相手端子側にある。長手の接触片の数を増やすことによって、相手端子との電気的接続を確保する短手の接触片の保護機能を高めることができる。また、対向する長手の接触片４０８ａ、４０８ｂ、４０８ｃ、４０８ｄが、相手端子を把持することができ、一度接続した端子がはずれにくくなるため、２対の長手の接触片４０８ａ、４０８ｂ、４０８ｃ、４０８ｄが、対向して配置されることが好ましいが、１対のみが対向するように接触片が配置されてもよい。   Six contact pieces 408a, 408b, 408c, 408d, 412a, 412b are four (two pairs) long contact pieces 408a, 408b, 408c, 408d and two (one pair) short contact pieces. 412a and 412b. As with the connector 300, the end portions 409a, 409b, 409c, and 409d of the long contact pieces 408a, 408b, 408c, and 408d are closer to the mating terminal side than the ends 413a and 413b of the short contact pieces 412a and 412b. . By increasing the number of the long contact pieces, it is possible to enhance the protection function of the short contact pieces that ensure electrical connection with the counterpart terminal. In addition, since the opposing long contact pieces 408a, 408b, 408c, and 408d can grip the mating terminal and the terminal once connected is difficult to come off, two pairs of the long contact pieces 408a, 408b, 408c, and 408d are provided. However, the contact pieces are preferably arranged to face each other, but the contact pieces may be arranged so that only one pair faces each other.

図８に本発明の別の実施形態である端子５００を示す。端子５００は、基体部５０４と、基体部５０４から嵌合方向に沿って相手端子側に延びる６本の接触片５０８ａ、５０８ｂ、５１０ａ、５１０ｂ、５１２ａ、５１２ｂとを備える。各接触片５０８ａ、５０８ｂ、５１０ａ、５１０ｂ、５１２ａ、５１２ｂの形状は、端子１００の接触片３０８ａ、３０８ｂ、３１２ａ、３１２ｂと同様である。基体部５０４のケーブル側にあるケーブル接続部５１６は、圧着などによって、ケーブルと接続することができる。   FIG. 8 shows a terminal 500 which is another embodiment of the present invention. The terminal 500 includes a base portion 504 and six contact pieces 508a, 508b, 510a, 510b, 512a, and 512b extending from the base portion 504 toward the mating terminal along the fitting direction. The shape of each contact piece 508a, 508b, 510a, 510b, 512a, 512b is the same as that of the contact piece 308a, 308b, 312a, 312b of the terminal 100. The cable connection portion 516 on the cable side of the base portion 504 can be connected to the cable by crimping or the like.

６本の接触片５０８ａ、５０８ｂ、５１０ａ、５１０ｂ、５１２ａ、５１２ｂは、３種類の長さを持ち、２本（１対）の長手の接触片５０８ａ、５０８ｂと、２本（１対）の短手の接触片５１２ａ、５１２ｂと、２本（１対）の、長手の接触片５０８ａ、５０８ｂより短く、短手の接触片５１２ａ、５１２ｂより長い長さの中手の接触片５１０ａ、５１０ｂと、で構成されている。すなわち、長手の接触片５０８ａ、５０８ｂの端部５０９ａ、５０９ｂの嵌合方向位置が、他の接触片５１０ａ、５１０ｂ、５１２ａ、５１２ｂの端部５１１ａ、５１１ｂ、５１３ａ、５１３ｂの嵌合方向位置よりも相手端子側にあり、中手の接触片５１０ａ、５１０ｂの端部５１１ａ、５１１ｂの嵌合方向位置が、短手の接触片５１２ａ、５１２ｂの端部５１３ａ、５１３ｂの嵌合方向位置よりも相手端子側にある。相手端子の把持に適している２本の長手の接触片５０８ａ、５０８ｂは、対向する位置で配置されることが好ましい。   The six contact pieces 508a, 508b, 510a, 510b, 512a, 512b have three types of lengths, two (one pair) long contact pieces 508a, 508b, and two (one pair) short. Hand contact pieces 512a, 512b, two (one pair) middle contact pieces 510a, 510b shorter than the long contact pieces 508a, 508b and longer than the short contact pieces 512a, 512b; It consists of That is, the fitting direction positions of the end portions 509a and 509b of the long contact pieces 508a and 508b are more than the fitting direction positions of the end portions 511a, 511b, 513a and 513b of the other contact pieces 510a, 510b, 512a and 512b. The mating terminal is located on the mating terminal side, and the mating contact positions of the end portions 511a and 511b of the middle contact pieces 510a and 510b are more mated than the mating direction positions of the end portions 513a and 513b of the short contact pieces 512a and 512b. On the side. The two long contact pieces 508a and 508b suitable for gripping the mating terminal are preferably arranged at opposing positions.

端子５００では、長手の接触片５０８ａ、５０８ｂが、他の接触片５１０ａ、５１０ｂ、５１２ａ、５１２ｂをアーク放電から保護する。また、長手の接触片５０８ａ、５０８ｂの、中手の接触片５１０ａ、５１０ｂの端部よりも相手端子側に位置する部分が炭化してしまった後であっても、中手の接触片５１０ａ、５１０ｂが、短手の接触片５１２ａ、５１２ｂをアーク放電から保護し、端子間の電気的接続を保つことができる。   In the terminal 500, the long contact pieces 508a, 508b protect the other contact pieces 510a, 510b, 512a, 512b from arcing. Further, even after the portions of the long contact pieces 508a, 508b located on the side of the mating terminal with respect to the end of the middle contact pieces 510a, 510b are carbonized, the middle contact pieces 510a, 510b can protect the short contact pieces 512a, 512b from arcing and maintain an electrical connection between the terminals.

図４に示す端子３００は、４本の接触片を有し、図７及び図８に示す端子４００、５００は、６本の接触片を有するが、本発明に係る端子は、８本若しくは、奇数本などのそれ以外の数の接触片を有してもよい。例えば、８本の接触片を有する端子では、相手端子に近い端部を持つ長手の４本の接触片が、嵌合方向周りの周方向に均等に配置されるようにしてもよい。   The terminal 300 shown in FIG. 4 has four contact pieces, and the terminals 400 and 500 shown in FIGS. 7 and 8 have six contact pieces, but the terminal according to the present invention has eight or You may have other number of contact pieces, such as an odd number. For example, in a terminal having eight contact pieces, four long contact pieces having end portions close to the mating terminal may be evenly arranged in the circumferential direction around the fitting direction.

端子及びコネクタには、様々な用途があり、例えば、照明用、産業機械用など幅広い産業分野に利用することができる。   Terminals and connectors have various uses, and can be used in a wide range of industrial fields such as lighting and industrial machinery.

１００ コネクタ
１０４ ハウジング
１０８ 端子保持孔
１１２ 嵌合口
１２０ 内周部のケーブル側の面
２００ 相手コネクタ
２０４ ハウジング
２０８ 相手端子保持孔
２１２ 嵌合口
２１６ ロック溝
３００ 端子
３０４ 基体部
３０８ 長手の接触片
３０９ 長手の接触片の端部（端子の端部）
３１０ 長手の接触片の案内部
３１１ 長手の接触片の接触部
３１２ 短手の接触片
３１３ 短手の接触片の端部
３１４ 短手の接触片の案内部
３１５ 短手の接触片の接触部
３１６ ケーブル接続部
３１８ スリーブ
３２０ 係止片
３２４ 相手端子
３２８ グラウンド用端子
３３０ グラウンド用端子の端部
３３２ 電源用端子
３３４ 電源用端子の端部
３３６ 信号用端子
３３８ 信号用端子の端部
４００ 端子
４０４ 基体部
４０８ 長手の接触片
４０９ 長手の接触片の端部
４１２ 短手の接触片
４１３ 短手の接触片の端部
４１６ ケーブル接続部
５００ 端子
５０４ 基体部
５０８ 長手の接触片
５０９ 長手の接触片の端部
５１０ 中手の接触片
５１１ 中手の接触片の端部
５１２ 短手の接触片
５１３ 短手の接触片の端部
５１６ ケーブル接続部 100 connector 104 housing 108 terminal holding hole 112 fitting port 120 inner cable side surface 200 mating connector 204 housing 208 mating terminal holding hole 212 fitting port 216 lock groove 300 terminal 304 base portion 308 longitudinal contact piece 309 longitudinal contact One end (terminal end)
310 Long Contact Piece Guide 311 Long Contact Piece Contact 312 Short Contact Piece 313 Short Contact Piece End 314 Short Contact Piece Guide 315 Short Contact Piece Contact 316 Cable connection portion 318 Sleeve 320 Locking piece 324 Mate terminal 328 Ground terminal 330 Ground terminal end 332 Power supply terminal 334 Power supply terminal end 336 Signal terminal 338 Signal terminal end 400 Terminal 404 Base portion 408 Long contact piece 409 Long contact piece end 412 Short contact piece 413 Short contact piece end 416 Cable connection portion 500 Terminal 504 Base portion 508 Long contact piece 509 Long contact piece end 510 Middle contact piece 511 Middle contact piece end 512 Short contact piece 513 Short contact piece end 516 Cable connection

Claims (7)

少なくとも三つの端子を備える電気コネクタであって、
少なくとも一つの端子の相手端子側端部が、他の端子の相手端子側端部よりも嵌合方向に関して相手端子側に位置し、
少なくとも一つの前記他の端子の相手端子側端部が、残りの端子の相手端子側端部よりも嵌合方向に関して相手端子側に位置し、
前記端子は、基体部と、嵌合方向に沿って前記基体部から相手端子側に延びる複数の接触片とを備え、少なくとも一つの前記接触片の端部と、他の前記接触片の端部とが、嵌合方向に関して異なる位置にある、
ことを特徴とする電気コネクタ。 An electrical connector comprising at least three terminals,
The other terminal side end of at least one terminal is located on the other terminal side with respect to the mating direction than the other terminal side end of the other terminal,
The other terminal side end of at least one other terminal is located on the other terminal side with respect to the mating direction than the other terminal side end of the remaining terminal,
The terminal includes a base portion and a plurality of contact pieces extending from the base portion toward the mating terminal along the fitting direction, and an end portion of at least one of the contact pieces and an end portion of the other contact piece. Are in different positions with respect to the mating direction,
An electrical connector characterized by that. 前記複数の接触片の少なくとも一対の接触片は、相手端子を把持できるように対向して配置されることを特徴とする請求項１に記載のコネクタ用接触端子。   2. The connector contact terminal according to claim 1, wherein at least a pair of contact pieces of the plurality of contact pieces are arranged to face each other so as to be able to hold a mating terminal. 対向する前記少なくとも一対の接触片の端部が、残りの接触片の端部よりも嵌合方向に関して相手端子側に位置する、
ことを特徴とする請求項２に記載の電気コネクタ。 The end portions of the at least one pair of contact pieces facing each other are positioned closer to the mating terminal side with respect to the fitting direction than the end portions of the remaining contact pieces.
The electrical connector according to claim 2. 前記複数の接触片は、四本の接触片から構成されており、前記四本の接触片のうちの二本の接触片の端部が、残りの接触片の端部よりも嵌合方向に関して相手端子側に位置する、
ことを特徴とする請求項１から３のいずれか１項に記載の電気コネクタ。 The plurality of contact pieces are composed of four contact pieces, and the end portions of the two contact pieces among the four contact pieces are more related to the fitting direction than the end portions of the remaining contact pieces. Located on the mating terminal side,
The electrical connector according to any one of claims 1 to 3, wherein: 前記複数の接触片は、六本の接触片から構成されており、前記六本の接触片のうちの四本の接触片の端部が、残りの接触片の端部よりも嵌合方向に関して相手端子側に位置する、
ことを特徴とする請求項１から３のいずれか１項に記載の電気コネクタ。 The plurality of contact pieces are composed of six contact pieces, and the end portions of the four contact pieces out of the six contact pieces are more in the fitting direction than the end portions of the remaining contact pieces. Located on the mating terminal side,
The electrical connector according to any one of claims 1 to 3, wherein: 前記複数の接触片は、六本の接触片から構成されており、前記六本の接触片のうちの二本の接触片の端部が、他の接触片の端部よりも嵌合方向に関して相手端子側にあり、
前記他の接触片のうちの二本の接触片の端部が、前記他の接触片のうちの残りの接触片の端部よりも嵌合方向に関して相手端子側に位置する、
ことを特徴とする請求項１から３のいずれか１項に記載の電気コネクタ。 The plurality of contact pieces are composed of six contact pieces, and the end portions of the two contact pieces among the six contact pieces are more in the fitting direction than the end portions of the other contact pieces. On the other terminal side,
The end portions of the two contact pieces of the other contact pieces are positioned closer to the mating terminal side with respect to the fitting direction than the end portions of the remaining contact pieces of the other contact pieces.
The electrical connector according to any one of claims 1 to 3, wherein: 前記少なくとも一つの端子の相手端子側端部と前記少なくとも一つの前記他の端子の相手端子側端部との間の嵌合方向に関する距離が、前記少なくとも一つの前記他の端子の相手端子側端部と前記残りの端子の相手端子側端部との間の距離よりも長い、
ことを特徴とする請求項１から６のいずれか１項に記載の電気コネクタ。 The distance in the fitting direction between the other terminal side end of the at least one terminal and the other terminal side end of the at least one other terminal is the other terminal side end of the at least one other terminal. Longer than the distance between the portion and the other terminal side end of the remaining terminal,
The electrical connector according to any one of claims 1 to 6, characterized in that:
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