JP2006172877A - Terminal fitting - Google Patents

Terminal fitting Download PDF

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Publication number
JP2006172877A
JP2006172877A JP2004363128A JP2004363128A JP2006172877A JP 2006172877 A JP2006172877 A JP 2006172877A JP 2004363128 A JP2004363128 A JP 2004363128A JP 2004363128 A JP2004363128 A JP 2004363128A JP 2006172877 A JP2006172877 A JP 2006172877A
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Prior art keywords
male tab
terminal fitting
male
plating layer
connection
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Inventor
Kenji Okamura
憲知 岡村
Eiji Kojima
映二 児嶋
Masahide Toio
昌秀 樋尾
Hiroshi Kobayashi
浩 小林
Masato Namikata
真人 南方
Atsushi Nishida
篤史 西田
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Sumitomo Wiring Systems Ltd
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Sumitomo Wiring Systems Ltd
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Priority to JP2004363128A priority Critical patent/JP2006172877A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To secure connection reliability of a terminal fitting even under vibration environment. <P>SOLUTION: The terminal fitting is composed of a male terminal fitting 30 having a male tab 31 and a female terminal fitting 10 having a contact member 17 which elastically clips the male tab 31 by inserting the male tab 31 between receptacle parts 16. Since the plated layers 51 formed on both surfaces of the male tab 31 and the receptacle part 16 mutually contact, both are connected. A step portion 52 which projects toward the male tab 31 side is formed on the surface of the receptacle part 16, and the plated layer 51 of the receptacle part 16 is coated in almost constant layer thickness, and makes the step portion corresponding to the step portion 52 as a connection part 53 capable of contacting the plated layer 51 on the male tab 31 side. Then, the layer thickness of this plated layer 51 is established larger than the projection dimension of the step portion 52. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、端子金具に関するものである。   The present invention relates to a terminal fitting.

一般的に、雄端子金具は、その先端部に雄タブを突出させた構造とされ、雌端子金具は、先端部に箱部を備えてこの箱部内に後方へ折り返した弾性接触片を設けた構造とされる（例えば、以下の特許文献１を参照）。雌端子金具の箱部内には雄端子金具の雄タブが差し込まれ、差し込まれた雄タブは、弾性接触片とこれに対向する天井壁との間に弾性的に挟持された状態で双方と電気的に接続する。ここで、端子金具の接触信頼性を高めるため、黄銅系材料や銅合金系材料からなる端子母材の表面には錫等によるメッキ層が形成されており、このメッキ層を介して雌雄の両端子金具の接続がとられるようになっている。
特開平４−１１５４７５号公報 In general, the male terminal fitting has a structure in which a male tab protrudes from the tip, and the female terminal fitting has a box at the tip and is provided with an elastic contact piece folded back in the box. The structure (for example, refer to Patent Document 1 below). The male tab of the male terminal fitting is inserted into the box portion of the female terminal fitting, and the inserted male tab is electrically connected to both the elastic contact piece and the ceiling wall opposite to the elastic contact piece. Connect. Here, in order to enhance the contact reliability of the terminal fitting, a plating layer made of tin or the like is formed on the surface of the terminal base material made of a brass material or a copper alloy material, and both ends of the male and female are interposed through this plating layer. The child metal fittings can be connected.
JP-A-4-115475

ところで、自動車のエンジンルームのように振動を受ける環境下で使用されるコネクタでは、雌雄の両端子金具間が摺動磨耗してメッキが剥がれ落ちる問題があった。すなわち、両端子金具が接続状態にあるときに、コネクタが振動環境下に晒されると、雄タブと天井壁との間は、両者が雄タブの挿入方向に沿った長い範囲で接触しているため、振動によって両者が擦れ合うことにより、接触面全体のメッキが削り取られる事態が起こり得た。そうすると、メッキ層下の端子母材が露出して端子母材間で当接し合うこととなり、接続信頼性が損なわれる懸念があった。   By the way, in the connector used in the environment which receives vibration like the engine room of an automobile, there is a problem that the plating is peeled off due to sliding wear between the male and female terminal fittings. That is, when both the terminal fittings are in a connected state and the connector is exposed to a vibration environment, the male tab and the ceiling wall are in contact with each other in a long range along the insertion direction of the male tab. For this reason, a situation where the plating of the entire contact surface is scraped off may occur due to the friction between the two. If it does so, the terminal base material under a plating layer will be exposed and will contact | abut between terminal base materials, and there existed concern that connection reliability might be impaired.

本発明は上記のような事情に基づいて完成されたものであって、振動環境下での端子金具の接続信頼性を確保することを目的とする。   The present invention has been completed based on the above circumstances, and an object thereof is to ensure connection reliability of terminal fittings in a vibration environment.

上記の目的を達成するための手段として、請求項１の発明は、雄タブを備えた雄端子金具と、前記雄タブの挿入方向に沿って形成された受け部とこの受け部との間に前記雄タブを挿入して弾性的に挟持する接触片とを備えた雌端子金具とからなり、前記雄タブと前記受け部の両表面に形成されたメッキ層が互いに当接し合うことで双方の接続がとられる端子金具であって、前記雄タブと前記受け部の両表面のうちの少なくともいずれか一方には、他方に向けて突出する段差部が形成され、前記一方のメッキ層は、ほぼ一定層厚で被着されるとともに前記段差部と対応する部分を前記他方のメッキ層に対する接続部となし、かつ、このメッキ層の層厚が、前記段差部の突出寸法よりも大きく設定されている構成としたところに特徴を有する。   As a means for achieving the above object, the invention of claim 1 includes a male terminal fitting having a male tab, a receiving portion formed along the insertion direction of the male tab, and the receiving portion. A female terminal fitting having a contact piece inserted and elastically sandwiched between the male tabs, and the plating layers formed on both surfaces of the male tab and the receiving portion abut each other. A terminal fitting to be connected, wherein at least one of both surfaces of the male tab and the receiving portion is formed with a stepped portion protruding toward the other, and the one plating layer is substantially A portion corresponding to the stepped portion is deposited with a constant layer thickness and is connected to the other plated layer, and the layer thickness of the plated layer is set larger than the protruding dimension of the stepped portion. It has the characteristics in the configuration.

請求項２の発明は、雄タブを備えた雄端子金具と、前記雄タブの挿入方向に沿って形成された受け部とこの受け部との間に前記雄タブを挿入して弾性的に挟持する接触片とを備えた雌端子金具とからなり、前記雄タブと前記接触片の両表面に形成されたメッキ層が互いに当接し合うことで双方の接続がとられる端子金具であって、前記雄タブと前記接触片の両表面のうちの少なくともいずれか一方には、他方に向けて突出する段差部が形成され、前記一方のメッキ層は、ほぼ一定層厚で被着されるとともに前記段差部と対応する部分を前記他方のメッキ層に当接可能な接続部となし、かつ、このメッキ層の層厚が、前記段差部の突出寸法よりも大きく設定されている構成としたところに特徴を有する。   According to a second aspect of the present invention, a male terminal fitting provided with a male tab, a receiving portion formed along the insertion direction of the male tab, and the male tab are inserted between the receiving portion and elastically sandwiched. A female terminal fitting provided with a contact piece, wherein the plating layer formed on both surfaces of the male tab and the contact piece abuts each other so that both connections can be taken, At least one of both surfaces of the male tab and the contact piece is formed with a stepped portion projecting toward the other, and the one plated layer is deposited with a substantially constant layer thickness and the stepped portion. The portion corresponding to the portion is formed as a connecting portion capable of contacting the other plating layer, and the thickness of the plating layer is set to be larger than the projecting dimension of the stepped portion. Have

請求項３の発明は、請求項１または請求項２に記載のものにおいて、前記接続部は、前記雄タブの挿入方向の前後位置に間隔をあけて複数配置されているところに特徴を有する。   A third aspect of the present invention is characterized in that, in the first or second aspect of the present invention, a plurality of the connecting portions are arranged at intervals in front and rear positions in the insertion direction of the male tab.

請求項４の発明は、請求項１または請求項２に記載のものにおいて、前記接続部は、前記雄タブの挿入方向に沿って複数並んで延出するとともに、このうちの少なくとも２つが、互いの突出寸法を異にして構成されているところに特徴を有する。   According to a fourth aspect of the present invention, in the first or second aspect of the present invention, a plurality of the connecting portions extend side by side along the insertion direction of the male tab, and at least two of the connecting portions are mutually connected. It is characterized in that it is configured with different projecting dimensions.

請求項５の発明は、請求項１または請求項２に記載のものにおいて、前記接続部は、階段状に突出する凸部として構成されているところに特徴を有する。   The invention of claim 5 is characterized in that, in the invention described in claim 1 or claim 2, the connecting portion is configured as a convex portion protruding in a staircase pattern.

請求項６の発明は、請求項１ないし請求項５のいずれかに記載のものにおいて、前記他方のメッキ層には、雌雄の両端子金具が接続状態にあるときに、前記接続部を嵌め入れる凹部が形成され、この凹部の底面に前記接続部が当接可能とされているところに特徴を有する。   According to a sixth aspect of the present invention, in the apparatus according to any one of the first to fifth aspects, the connection portion is fitted into the other plating layer when both male and female terminal fittings are in a connected state. A recess is formed, and the connection portion can be brought into contact with the bottom surface of the recess.

＜請求項１の発明＞
雌雄の両端子金具が接続状態にあるときに、雄タブと受け部とは、接続部を介して互いに当接し合う。その後、振動環境下で摺動が生じると、接続部が磨耗によって削り取られる事態が起こり得るが、本発明の場合には、メッキ層の層厚が段差部の突出寸法よりも大きく設定されているから、仮に接続部が削り取られたとしても、段差部を露出させることなく、削り取られたあとに残るメッキ層を新たな接続部として機能させることができる。つまり、磨耗によって当初の接続部が消失しても、この接続部に代わって、新たな接続部があらわれるような構成となっているから、振動環境下にあってもメッキ層による信頼性の高い接続状況を実現できる。 <Invention of Claim 1>
When the male and female terminal fittings are in the connected state, the male tab and the receiving portion abut each other through the connecting portion. Thereafter, when sliding occurs in a vibration environment, there may occur a situation where the connecting portion is scraped off due to wear. In the present invention, the thickness of the plating layer is set larger than the protruding dimension of the stepped portion. Therefore, even if the connecting portion is scraped off, the plating layer remaining after the scraping can be made to function as a new connecting portion without exposing the stepped portion. In other words, even if the initial connection portion disappears due to wear, a new connection portion appears instead of this connection portion, so the plating layer is highly reliable even in a vibration environment Connection status can be realized.

＜請求項２の発明＞
雌雄の両端子金具が接続状態にあるときに、雄タブと接触片とは、接続部を介して互いに当接し合う。その後、振動環境下で摺動が生じると、接続部が磨耗によって削り取られる事態が起こり得るが、本発明の場合には、メッキ層の層厚が段差部の突出寸法よりも大きく設定されているから、仮に接続部が削り取られたとしても、段差部を露出させることなく、削り取られたあとに残るメッキ層を新たな接続部として機能させることができる。つまり、磨耗によって当初の接続部が消失しても、この接続部に代わって、新たな接続部があらわれるような構成となっているから、振動環境下にあってもメッキ層による信頼性の高い接続状況を実現できる。 <Invention of Claim 2>
When the male and female terminal fittings are in the connected state, the male tab and the contact piece abut against each other via the connecting portion. Thereafter, when sliding occurs in a vibration environment, there may occur a situation where the connecting portion is scraped off due to wear. In the present invention, the thickness of the plating layer is set larger than the protruding dimension of the stepped portion. Therefore, even if the connecting portion is scraped off, the plating layer remaining after the scraping can be made to function as a new connecting portion without exposing the stepped portion. In other words, even if the initial connection portion disappears due to wear, a new connection portion appears instead of this connection portion, so the plating layer is highly reliable even in a vibration environment Connection status can be realized.

＜請求項３の発明＞
接続部が雄タブの挿入方向の前後位置に間隔をあけて複数配置されているから、雄タブが接触片と受け部との間にバランスよく挟持される。 <Invention of Claim 3>
Since a plurality of connecting portions are arranged at intervals in the front and rear positions in the insertion direction of the male tab, the male tab is sandwiched between the contact piece and the receiving portion in a balanced manner.

＜請求項４の発明＞
接続部が雄タブの挿入方向に沿って複数並んで配置されているから、雄タブの挿入フィーリングが良好となる。また、複数の接続部のうちの少なくとも２つが互いの突出寸法を異にして構成されているから、メッキ層の磨耗の進行に従って、他方のメッキ層に対する接点数を増大させることができる。 <Invention of Claim 4>
Since a plurality of connecting portions are arranged side by side along the insertion direction of the male tab, the insertion feeling of the male tab is improved. Further, since at least two of the plurality of connecting portions are configured with different projecting dimensions, the number of contacts with respect to the other plating layer can be increased as the plating layer wears.

＜請求項５の発明＞
接続部が階段状に突出する凸部として構成されているから、メッキ層の磨耗の進行に従って、突出寸法の大きな端面から順に、他方のメッキ層に対する接続部を構成することができる。 <Invention of Claim 5>
Since the connecting portion is configured as a protruding portion that protrudes in a stepped manner, the connecting portion to the other plating layer can be configured in order from the end surface having a larger protruding dimension as the wear of the plating layer progresses.

＜請求項６の発明＞
他方のメッキ層には接続部を嵌め入れる凹部が形成され、凹部の底面に接続部を当接可能としているから、両端子金具が接続状態にあるときに、凹部と接続部とが凹凸状に噛み合うことで、雄タブの遊動を規制することができる。 <Invention of Claim 6>
The other plating layer is provided with a recess for fitting the connection portion, and the connection portion can be brought into contact with the bottom surface of the recess. Therefore, when both terminal fittings are in the connected state, the recess and the connection portion are uneven. The movement of the male tab can be restricted by meshing.

＜実施形態１＞
本発明の実施形態１を図１ないし図５によって説明する。本実施形態は、雌端子金具１０と雄端子金具３０とによって構成されている。雌雄の両端子金具１０，３０は、それぞれ、雌雄の両コネクタハウジング（図示せず）内に収容されており、両コネクタハウジングの嵌合操作に伴って互いに接続されるようになっている。 <Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the female terminal fitting 10 and the male terminal fitting 30 are configured. Both male and female terminal fittings 10 and 30 are housed in both male and female connector housings (not shown), and are connected to each other in accordance with the fitting operation of both connector housings.

雄端子金具３０は、導電性板材を折り曲げて形成されており、その前端部に前方へ突出する雄タブ３１を備えて構成されている。雄タブ３１は、やや幅広でかつ扁平状に形成されており、その先端周りには雌端子金具１０への挿入動作を案内するテーパ面３１Ａが切り欠きやプレス加工により形成されている。
雌端子金具１０は、同じく導電性板材を折り曲げて形成されており、図１及び図２に示すように、その前端部に雄タブ３１を挿入可能な箱部１１を備え、かつ、その後端部に電線Ｗを固定可能な電線接続部１２を備えている。電線接続部１２は、前方に位置して電線Ｗの芯線部分をかしめ付けるワイヤバレル１２Ａと、後方に位置して電線Ｗの被覆部分をかしめ付けるインシュレーションバレル１２Ｂとからなる。 The male terminal fitting 30 is formed by bending a conductive plate material, and includes a male tab 31 protruding forward at the front end portion thereof. The male tab 31 is formed in a slightly wide and flat shape, and a tapered surface 31A for guiding the insertion operation to the female terminal fitting 10 is formed around the tip by notching or pressing.
The female terminal fitting 10 is also formed by bending a conductive plate, and as shown in FIG. 1 and FIG. 2, the front end portion includes a box portion 11 into which a male tab 31 can be inserted, and the rear end portion. The electric wire connection part 12 which can fix the electric wire W to is provided. The electric wire connecting portion 12 includes a wire barrel 12A that is located at the front and caulks the core portion of the electric wire W, and an insulation barrel 12B that is located at the rear and caulks the covering portion of the electric wire W.

箱部１１は、前後方向に細長い略角筒状に形成され、底板１３と、底板１３の両端から立ち上げられた左右一対の側板１４と、両側板１４の上端から内向きに折り曲げられて上下に重ねられた一対の天井板１５とから構成されている。両天井板１５のうち下側に配置された天井板１５には、雄タブ３１との対応する部分に、受け部１６が叩き出しにより形成されている。この受け部１６は、図４に示すように、前後方向に沿って延出する平坦面を備えた台形状に形成されている。もっとも、受け部１６は、図５に示すように、前後方向に並んで延出する複数条（図示する場合は２条）のビード１６Ａによって構成されていても構わない。   The box part 11 is formed in a substantially rectangular tube shape elongated in the front-rear direction, and is bent inward from the upper ends of the bottom plate 13, a pair of left and right side plates 14 raised from both ends of the bottom plate 13, and the upper and lower sides. And a pair of ceiling plates 15 stacked on each other. A receiving portion 16 is formed on the ceiling plate 15 disposed on the lower side of the two ceiling plates 15 at a portion corresponding to the male tab 31 by hammering. As shown in FIG. 4, the receiving portion 16 is formed in a trapezoidal shape with a flat surface extending along the front-rear direction. However, as shown in FIG. 5, the receiving portion 16 may be configured by a plurality of (in the illustrated case, two) beads 16 </ b> A extending side by side in the front-rear direction.

箱部１１内には、図１及び図２に示すように、底板１３の前端から後方へ山形状に折り返された接触片１７が配置されている。接触片１７は、上下方向に弾性撓みし得るように形成され、山の頂上に設けられた接点部１８と受け部１６との間で雄タブ３１を挟持した状態で同雄タブ３１と電気的に接続可能とされている。接触片１７のうち接点部１８よりも後方領域は補助バネ部１９とされ、補助バネ部１９は、雄タブ３１の挿入時に、底板１３の上面と当接して雄タブ３１に対する接触荷重を加勢するようになっている。底板１３の前後方向略中央には、接点部１８に向けて切り起こされたストッパー２０が形成されている。ストッパー２０は、接触片１７の過度撓みを防止するためのものである。   As shown in FIGS. 1 and 2, a contact piece 17 that is folded back in a mountain shape from the front end of the bottom plate 13 is disposed in the box portion 11. The contact piece 17 is formed so as to be elastically deformable in the vertical direction, and is electrically connected to the male tab 31 in a state where the male tab 31 is sandwiched between the contact portion 18 provided on the top of the mountain and the receiving portion 16. It is possible to connect to. An area behind the contact portion 18 of the contact piece 17 is an auxiliary spring portion 19, and the auxiliary spring portion 19 abuts against the upper surface of the bottom plate 13 when the male tab 31 is inserted, and applies a contact load to the male tab 31. It is like that. A stopper 20 that is cut and raised toward the contact portion 18 is formed at a substantially center of the bottom plate 13 in the front-rear direction. The stopper 20 is for preventing the contact piece 17 from being excessively bent.

さて、雌雄の両端子金具１０，３０は、図３の（Ａ）及び（Ｂ）に示すように、黄銅性の端子母材５０の表面全体に亘って錫によるメッキ層５１を形成して構成されている。端子母材５０のうち受け部１６と対応する部分には、周囲の面よりも一段突出する段差部５２が形成されている。段差部５２は、側面視すると前後方向に沿って平坦な略台形状に形成され、受け部１６側にあっては前後二位置に間隔をあけて二つ配置されるとともに、雄タブ３１側にあっては一つ配置されている。メッキ層５１は、段差部５２からその周囲の面にかけてほぼ一定層厚Ｌ１で被着されている。段差部５２に被着されたメッキ層５１は、段差部５２にならって同段差部５２と相似の略台形状に形成され、対面する相手側に対して面当り状態で当接可能な接続部５３として構成されている。   The male and female terminal fittings 10 and 30 are configured by forming a plated layer 51 of tin over the entire surface of the brass terminal base material 50 as shown in FIGS. Has been. A stepped portion 52 that protrudes one step from the surrounding surface is formed in a portion of the terminal base material 50 corresponding to the receiving portion 16. The stepped portions 52 are formed in a substantially trapezoidal shape that is flat along the front-rear direction when viewed from the side. Two stepped portions 52 are arranged at two positions in the front-rear direction on the receiving portion 16 side, One is arranged. The plating layer 51 is deposited with a substantially constant layer thickness L1 from the stepped portion 52 to the surrounding surface. The plating layer 51 deposited on the stepped portion 52 is formed in a substantially trapezoidal shape similar to the stepped portion 52 following the stepped portion 52, and can be contacted in a face-to-face contact state with the opposing side. 53.

雄タブ３１側の接続部５３は、雄タブ３１が箱部１１内に正規深さで挿入されたときに、受け部１６側の二つの接続部５３間に嵌まり込む態様で形成されている。また、接触片１７の接点部１８は、受け部１６側の二つの接続部５３の中間位置に対して、雄タブ３１の挿入空間を挟んだ対称位置に配置されている。したがって、雄タブ３１は、受け部１６と接触片１７との間にバランスよく挟持されることとなる。なお、図面上の接続部５３は、作図の便宜上、実際のサイズよりも誇張して描かれている。   The connection part 53 on the male tab 31 side is formed in such a manner that it fits between the two connection parts 53 on the receiving part 16 side when the male tab 31 is inserted into the box part 11 at a normal depth. . Further, the contact portion 18 of the contact piece 17 is disposed at a symmetrical position with the insertion space of the male tab 31 between the intermediate positions of the two connection portions 53 on the receiving portion 16 side. Therefore, the male tab 31 is sandwiched between the receiving portion 16 and the contact piece 17 with a good balance. In addition, the connection part 53 on drawing is drawn exaggerated rather than actual size for convenience of drawing.

メッキ層５１の層厚Ｌ１は、約１〜２μｍであって、端子母材５０の段差部５２の突出寸法Ｌ２よりも大きく設定してある（つまり、Ｌ１＞Ｌ２の関係が成立する）。したがって、接続部５３の周囲面５３Ｒが段差部５２の突出端面５２Ａより高位面となるため、仮に接続部５３が削り取られても、端子母材５０が露出することはなく、削り取られたあとに残るメッキ層５１が新たな接続部として機能するようになっている。   The layer thickness L1 of the plating layer 51 is about 1 to 2 μm and is set to be larger than the protruding dimension L2 of the stepped portion 52 of the terminal base material 50 (that is, the relationship of L1> L2 is established). Therefore, since the peripheral surface 53R of the connecting portion 53 is higher than the protruding end surface 52A of the stepped portion 52, even if the connecting portion 53 is scraped off, the terminal base material 50 is not exposed, and after being scraped off. The remaining plating layer 51 functions as a new connection portion.

なお、本実施形態の段差部５２はプレス加工によって端子母材５０の厚み方向へ底上げした状態で突出して形成されているが、その突出寸法が小さいことを考慮すると、段差部５２は、プレス加工に代わって、端子母材５０の表面に鋼球を吹き付けるブラスト加工によって形成されても構わない。ブラスト加工の場合には、段差部５２が端子母材５０の表面に多数形成されることとなる。また、メッキ層５１は、段差部５２の形成後、両端子金具１０，３０の全体をメッキ用の電解質溶液中に浸漬させてメッキ処理を行うことによって形成されるので、全体に亘ってほぼ一定層厚Ｌ１を有することとなる。   Note that the stepped portion 52 of the present embodiment is formed so as to protrude in the thickness direction of the terminal base material 50 by pressing, but considering that the protruding dimension is small, the stepped portion 52 is formed by pressing. Instead of this, the terminal base material 50 may be formed by blasting a steel ball on the surface. In the case of blasting, a large number of step portions 52 are formed on the surface of the terminal base material 50. In addition, since the plating layer 51 is formed by immersing the entire terminal fittings 10 and 30 in an electrolytic solution for plating after the formation of the stepped portion 52, the plating layer 51 is substantially constant throughout. It will have a layer thickness L1.

ここで、図２に示すように、雄タブ３１が箱部１１内に正規深さで挿入されると、雄タブ３１と受け部１６とは、両接続部５３の表面を互いに当接し合うことで緊密に接続される。この状態から、コネクタが振動環境下におかれると、両接続部５３は、接続状態を保持しつつも、振動に伴って互いに擦り合い、磨耗によってその突出量を経時的に減退させてゆく。その後、両接続部５３が完全に削り取られた状態では、図３の（Ｂ）に示すように、端子母材５０の段差部５２を被覆しつつ同一高さ位置に連続する平坦なメッキ面５５が削成され、今度はこのメッキ面５５を介して、雄タブ３１と受け部１６とが互いに当接し合うこととなる。   Here, as shown in FIG. 2, when the male tab 31 is inserted into the box part 11 at a normal depth, the male tab 31 and the receiving part 16 abut each other on the surfaces of the connection parts 53. Connected closely. From this state, when the connector is placed in a vibration environment, the two connection portions 53 rub against each other along with the vibration while maintaining the connection state, and the amount of protrusion decreases with time due to wear. Thereafter, in a state in which both the connecting portions 53 are completely scraped off, as shown in FIG. 3B, a flat plated surface 55 that continues to the same height position while covering the stepped portion 52 of the terminal base material 50. This time, the male tab 31 and the receiving portion 16 come into contact with each other through the plated surface 55.

このように本実施形態では、振動によって雄タブ３１と受け部１６の両接続部５３が削り取られたとしても、端子母材５０の段差部５２を露出させることなく、削り取られたあとに残るメッキ層５１を新たな接続部として機能させることができる。したがって、振動環境下にあっても、メッキ層５１による接続状況を担保することができ、接続信頼性を高めることができる。なお、雄タブ３１と受け部１６との間は、振動に伴って弾性撓みし得る接触片１７と違って、振動を吸収し難い接続構造となっている。したがって、振動に起因する磨耗によりメッキ層５１が削り取られて端子母財５０が露出する事態を招き易いので、かかる接続部５３を設けることでメッキ層５１による接続状況を確保できる意義は大きいといえる。   As described above, in this embodiment, even if both the connection portions 53 of the male tab 31 and the receiving portion 16 are scraped off by vibration, the plating remaining after being scraped without exposing the stepped portion 52 of the terminal base material 50. The layer 51 can function as a new connection. Therefore, even in a vibration environment, the connection state by the plating layer 51 can be ensured, and the connection reliability can be improved. The male tab 31 and the receiving portion 16 have a connection structure that hardly absorbs vibration, unlike the contact piece 17 that can be elastically bent with vibration. Therefore, since the plating layer 51 is scraped off due to wear caused by vibration and the terminal base material 50 is likely to be exposed, it can be said that the provision of such a connection portion 53 has a significant significance in securing the connection state by the plating layer 51. .

また、接続部５３が雄タブ３１の挿入方向の前後位置に間隔をあけて二つ配置されているから、雄タブ３１が箱部１１内にて上下方向に傾くことなくバランスよく保持される。さらに、接続部５３が削り取られる前の状態では、受け部１６と雄タブ３１の両接続部５３が凹凸状に噛み合うような構成となっているから、雄タブ３１の前後方向の遊動を規制することができる。   Further, since the two connection portions 53 are arranged at intervals in the front and rear positions in the insertion direction of the male tab 31, the male tab 31 is held in the box portion 11 without being inclined in the vertical direction. Furthermore, in the state before the connection part 53 is scraped off, both the connection parts 53 of the receiving part 16 and the male tab 31 are configured to engage with each other in an uneven shape, so that the back-and-forth movement of the male tab 31 is restricted. be able to.

＜実施形態２＞
次に、本発明の実施形態２を図６によって説明する。実施形態２では、接続部５３が多段に構成されるとともに接続部５３と係合する接続相手が凹部５６として構成されている点で実施形態１とは異なっているが、その他は、実施形態１と同様であるので、構造上の同一部位には同一符号を付し、重複する説明は省略する。 <Embodiment 2>
Next, Embodiment 2 of the present invention will be described with reference to FIG. The second embodiment is different from the first embodiment in that the connection portion 53 is configured in multiple stages and the connection partner that engages with the connection portion 53 is configured as the concave portion 56. Therefore, the same parts in the structure are denoted by the same reference numerals, and redundant description is omitted.

実施形態２の受け部１６に形成された接続部５３は、突出端側に配置された第１接続部５３Ａと、第１接続部５３Ａよりも一回り大きく形成されて基端側に配置された第２接続部５３Ｂとからなり、段違いとなった２つの端面５３Ｅ，５３Ｆを備えて階段状に突出する凸部として構成されている。第１接続部５３Ａと第２接続部５３Ｂは、いずれも雄タブ３１の挿入方向に沿って平坦な台形状に形成されている。また、この接続部５３は、雄タブ３１の挿入方向の前後二位置に間隔をあけて配置されている。
接続部５３の内側には、これと相似の多段に構成された段差部（図示せず）が埋設されている。この多段に構成された段差部は、その突出寸法がメッキ層５１の層厚よりも小さく設定されており、仮に第１接続部５３Ａと第２接続部５３Ｂの双方が磨耗によって削り取られたとしても、表面に露出しないようになっている。 The connection part 53 formed in the receiving part 16 of the second embodiment is formed to be slightly larger than the first connection part 53A disposed on the protruding end side and the first connection part 53A and disposed on the proximal end side. The second connecting portion 53B is configured as a convex portion that includes two end faces 53E and 53F that are stepped and project in a stepped manner. Both the first connection portion 53A and the second connection portion 53B are formed in a flat trapezoidal shape along the insertion direction of the male tab 31. In addition, the connection portion 53 is arranged at two positions in the front and rear directions in the insertion direction of the male tab 31 with a space therebetween.
A step portion (not shown) configured in a multi-stage similar to this is embedded inside the connection portion 53. The projecting dimension of this multi-level stepped portion is set to be smaller than the thickness of the plating layer 51, and even if both the first connection portion 53A and the second connection portion 53B are scraped off due to wear. , Not exposed to the surface.

雄タブ３１には、かかる接続部５３と対応する凹部５６が形成されている。凹部５６は、磨耗する前の状態で、雄タブ３１の厚み方向途中に段付面５６Ａを備えるとともに、段付面５６Ａとそれに対向する第２接続部５３の端面５３Ｅとの間に隙間Ｌ３を有し、かつ、その底面に第１接続部５３の端面５３Ｆを当接させている。この隙間Ｌ３は、凹部５６の周囲面５６Ｂとそれに対向する受け部１６の表面１６Ｅとの間の隙間Ｌ４よりも小さく設定されている（つまり、Ｌ４＞Ｌ３の関係が成立する）。   The male tab 31 has a recess 56 corresponding to the connecting portion 53. The concave portion 56 is provided with a stepped surface 56A in the middle of the male tab 31 in the thickness direction, and a gap L3 is formed between the stepped surface 56A and the end surface 53E of the second connection portion 53 facing the concave portion 56 before being worn. And the end surface 53F of the first connection portion 53 is in contact with the bottom surface thereof. The gap L3 is set to be smaller than the gap L4 between the peripheral surface 56B of the concave portion 56 and the surface 16E of the receiving portion 16 facing it (that is, the relationship L4> L3 is established).

実施形態２によれば、振動に起因する磨耗によって第１接続部５３Ａが削り取られた場合に、第２接続部５３Ｂの端面５３Ｅが凹部５６の段付面５６Ａと当接するようになっている。この第２接続部５３Ｂの端面５３Ｅが凹部５６の段付面５６Ａと当接した状態では受け部１６の表面１６Ｅと凹部５６の周囲面５６Ｂとは非接触とされるが、磨耗の進行によってさらに第２接続部５３Ｂが削り取られた場合には、受け部１６の端面１６Ｅが凹部５６の周囲面５６Ｂと当接するようになっている。したがって、メッキ層５１の磨耗の進行に従って、接続部５３がその突出端側から順次削り取られても、新たなメッキ面があらわれるようになっているから、メッキ層５１による接続状況を常に形成することができる。また、接続部５３が削り取られる前には、接続部５３と凹部５６とが凹凸状に噛み合うことにより、雄タブ３１の前後方向の遊動を規制することができる。   According to the second embodiment, when the first connection portion 53A is scraped off due to wear caused by vibration, the end surface 53E of the second connection portion 53B comes into contact with the stepped surface 56A of the recess 56. In a state where the end surface 53E of the second connection portion 53B is in contact with the stepped surface 56A of the concave portion 56, the surface 16E of the receiving portion 16 and the peripheral surface 56B of the concave portion 56 are not in contact with each other. When the second connection portion 53B is scraped off, the end surface 16E of the receiving portion 16 comes into contact with the peripheral surface 56B of the recess 56. Therefore, even if the connection portion 53 is sequentially scraped from the protruding end side as the plating layer 51 is worn, a new plating surface appears. Therefore, the connection state by the plating layer 51 is always formed. Can do. Moreover, before the connection part 53 is scraped off, the connection part 53 and the recessed part 56 mesh | engage in an uneven | corrugated shape, and can control the loose movement of the male tab 31 in the front-back direction.

＜実施形態３＞
図７は、本発明の実施形態３を示す。実施形態３では、雄タブ３１に前後方向に沿って延出する接続部５３が形成されている点で、上記実施形態１及び実施形態２とは異なっている。 <Embodiment 3>
FIG. 7 shows Embodiment 3 of the present invention. The third embodiment is different from the first and second embodiments in that the male tab 31 is formed with a connection portion 53 extending along the front-rear direction.

つまり、実施形態３の接続部５３は、やや幅広で扁平な雄タブ３１の上面（受け部１６と対向する面）に、前後方向つまり雄タブ３１の長さ方向に沿って複数条（図示する場合は６条）が並んで延出して形成されている。そして、この複数の接続部５３は、互いの突出寸法を異にしており、雄タブ３１の幅方向両端から中心に向かって少しずつ高さ寸法を低くして構成されている。各接続部５３は、断面方形状でかつコーナー部分が少し丸みを帯びて形成されている。各接続部５３の内側には、各接続部５３と対応する形態の段差部（図示せず）が埋設されている。段差部５２は、その突出寸法がメッキ層５１の層厚よりも小さく設定されており、仮に各接続部５３が磨耗によって全て削り取られたとしても、表面に露出しないようになっている。なお、接続部５３と対向する受け部（図示せず）側の接続面は、同一高さ位置に連続する平坦面とされている。   That is, the connection portion 53 of the third embodiment has a plurality of strips (illustrated) on the upper surface (surface facing the receiving portion 16) of the slightly wide and flat male tab 31 along the longitudinal direction, that is, the length direction of the male tab 31. In the case, 6) are extended side by side. The plurality of connecting portions 53 have different projecting dimensions, and are configured such that the height dimension is gradually decreased from both ends in the width direction of the male tab 31 toward the center. Each connecting portion 53 has a square cross section and a slightly rounded corner. A step portion (not shown) having a form corresponding to each connection portion 53 is embedded inside each connection portion 53. The projecting dimension of the stepped portion 52 is set to be smaller than the layer thickness of the plated layer 51, and even if all the connecting portions 53 are scraped off due to wear, they are not exposed to the surface. Note that the connection surface on the side of the receiving portion (not shown) facing the connection portion 53 is a flat surface that continues to the same height position.

実施形態３によれば、接続部５３が雄タブ３１の挿入方向に沿って複数並列して配置されているから、雄タブ３１の挿入フィーリングが良好となる。また、この複数の接続部５３が互いの突出寸法を異にして構成されているから、メッキ層５１の磨耗の進行に従って、受け部に対する接点数を増大させることができる。   According to the third embodiment, since a plurality of connection portions 53 are arranged in parallel along the insertion direction of the male tab 31, the insertion feeling of the male tab 31 is improved. Further, since the plurality of connecting portions 53 are configured with different projecting dimensions, the number of contacts with respect to the receiving portion can be increased as the wear of the plating layer 51 progresses.

＜実施形態４＞
図８は、本発明の実施形態４を示す。実施形態４では、接続部５３が接触片１７側に設けられている点で、上記実施形態１乃至実施形態３とは異なっている。
すなわち、実施形態４の接続部５３は、上記実施形態１における接触片１７の接点部１８に相当する部分にこの接点部１８に代わって配置されている。接続部５３は、前後方向に平坦な台形状をなし、雄タブ３１の下面に向けて突出して形成されている。また、接続部５３の内側にはこの接続部５３と相似の段差部（図示せず）が埋設されている。段差部の突出寸法は、メッキ層５１の層厚よりも小さく設定されており、この点で上記接点部１８とは構造を異にしている。 <Embodiment 4>
FIG. 8 shows Embodiment 4 of the present invention. The fourth embodiment is different from the first to third embodiments in that the connection portion 53 is provided on the contact piece 17 side.
That is, the connecting portion 53 of the fourth embodiment is arranged in place of the contact portion 18 in a portion corresponding to the contact portion 18 of the contact piece 17 in the first embodiment. The connecting portion 53 has a trapezoidal shape that is flat in the front-rear direction, and is formed to protrude toward the lower surface of the male tab 31. A stepped portion (not shown) similar to the connecting portion 53 is embedded inside the connecting portion 53. The projecting dimension of the stepped portion is set to be smaller than the layer thickness of the plated layer 51, and the structure is different from that of the contact portion 18 in this respect.

実施形態４によれば、振動によって接触片１７の接続部５３が削り取られたとしても、端子母材５０の段差部を露出させることなく、削り取られたあとに残るメッキ層５１を新たな接続部として機能させることができる。したがって、振動環境下にあっても、メッキ層５１による接続状況を担保することができ、接続信頼性を高めることができる。   According to the fourth embodiment, even if the connection portion 53 of the contact piece 17 is scraped off due to vibration, the plating layer 51 remaining after being scraped without exposing the stepped portion of the terminal base material 50 is replaced with a new connection portion. Can function as. Therefore, even in a vibration environment, the connection state by the plating layer 51 can be ensured, and the connection reliability can be improved.

＜他の実施形態＞
本発明は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本発明の技術的範囲に含まれ、さらに、下記以外にも要旨を逸脱しない範囲内で種々変更して実施することができる。
（１）上記実施形態では、雌端子金具が前端側に箱部を有する形態で構成されていたが、本発明において、雌端子金具は、平板状の受け部の前後方向に沿った両側縁から一対の接触片を内向きにハート型をなすよう回曲して形成したファストン端子として構成されてもよい。
（２）上記実施形態では、錫によってメッキ層を形成していたが、本発明によれば、錫以外の材料、例えば金によってメッキ層を形成しても構わない。
（３）上記実施形態１では、接続部は受け部と雄タブの両方に設けられていたが、本発明においては、接続部は受け部と雄タブのいずれか一方に設けられているだけでも構わない。また、上記実施形態２では、接続部は受け部に設けられていたが、本発明においては、接続部は雄タブに設けられても構わない。さらに、実施形態３では、接続部は雄タブに設けられていたが、本発明においては、接続部は受け部に設けられても構わない。
（４）実施形態２では、接続部と凹部とが多段に構成されていたが、本発明にうおいては、接続部と凹部とが多段に構成されていなくてもよい。
（５）実施形態３では、複数の接続部の突出寸法をそれぞれに異ならせていたが、本発明においては、このうちの少なくとも２つの突出寸法を異ならせて構成されていればよい。
（６）実施形態４では、接続部は接触片のみに設けられていたが、本発明においては、接続部は接触片に加えて受け部と雄タブとにも設けられるとよく、その場合には、上記実施形態１乃至実施形態３を適用することができる。 <Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
(1) In the said embodiment, although the female terminal metal fitting was comprised in the form which has a box part in the front end side, in this invention, a female terminal metal fitting is from the both-sides edge along the front-back direction of a flat receiving part. It may be configured as a faston terminal formed by bending a pair of contact pieces inwardly to form a heart shape.
(2) In the above embodiment, the plating layer is formed of tin. However, according to the present invention, the plating layer may be formed of a material other than tin, for example, gold.
(3) In Embodiment 1 described above, the connection portion is provided on both the receiving portion and the male tab. However, in the present invention, the connection portion is provided only on either the receiving portion or the male tab. I do not care. Moreover, in the said Embodiment 2, although the connection part was provided in the receiving part, in this invention, a connection part may be provided in a male tab. Further, in the third embodiment, the connecting portion is provided on the male tab, but in the present invention, the connecting portion may be provided on the receiving portion.
(4) In the second embodiment, the connecting portion and the recessed portion are configured in multiple stages. However, in the present invention, the connecting portion and the recessed portion may not be configured in multiple stages.
(5) In the third embodiment, the protruding dimensions of the plurality of connecting portions are different from each other. However, in the present invention, it is only necessary that at least two of the protruding dimensions are different.
(6) In Embodiment 4, the connection portion is provided only on the contact piece. However, in the present invention, the connection portion may be provided on the receiving portion and the male tab in addition to the contact piece. The first to third embodiments can be applied.

本発明の実施形態１において雌雄両端子金具が接続する前の一部破断側面図The partially broken side view before male and female terminal metal fittings connect in Embodiment 1 of this invention 雌雄両端子金具が接続したときの一部破断側面図Partially broken side view when both male and female terminal fittings are connected （Ａ）接続部が形成された部分の拡大側断面図 （Ｂ）接続部が削り取られたあとに残る部分の拡大側断面図(A) Enlarged side sectional view of the portion where the connecting portion is formed (B) Enlarged side sectional view of the portion remaining after the connecting portion is scraped off 受け部の斜視図Perspective view of the receiving part 他の例における受け部の斜視図The perspective view of the receiving part in another example 実施形態２において雌雄両端子金具が接続したときの要部拡大側断面図The principal part expanded side sectional view when the male and female terminal metal fittings connect in Embodiment 2. 実施形態３における雄タブの要部拡大斜視図The principal part expansion perspective view of the male tab in Embodiment 3 実施形態４において雌雄両端子金具が接続したときの要部拡大側断面図The principal part expanded side sectional view when both male and female terminal metal fittings are connected in Embodiment 4.

符号の説明Explanation of symbols

Ｗ…電線
１０…雌端子金具
１３…底板
１４…側板
１５…天井板
１６…受け部
１７…接触片
３１…雄タブ
５３…接続部 W ... Electric wire 10 ... Female terminal fitting 13 ... Bottom plate 14 ... Side plate 15 ... Ceiling plate 16 ... Receiving part 17 ... Contact piece 31 ... Male tab 53 ... Connection part

Claims (6)

雄タブを備えた雄端子金具と、
前記雄タブの挿入方向に沿って形成された受け部とこの受け部との間に前記雄タブを挿入して弾性的に挟持する接触片とを備えた雌端子金具とからなり、
前記雄タブと前記受け部の両表面に形成されたメッキ層が互いに当接し合うことで双方の接続がとられる端子金具であって、
前記雄タブと前記受け部の両表面のうちの少なくともいずれか一方には、他方に向けて突出する段差部が形成され、
前記一方のメッキ層は、ほぼ一定層厚で被着されるとともに前記段差部と対応する部分を前記他方のメッキ層に当接可能な接続部となし、かつ、このメッキ層の層厚が、前記段差部の突出寸法よりも大きく設定されていることを特徴とする端子金具。 A male terminal fitting with a male tab;
A female terminal fitting comprising a receiving part formed along the insertion direction of the male tab and a contact piece for elastically clamping the male tab between the receiving part,
A terminal fitting in which both the male tab and the plating layer formed on both surfaces of the receiving portion are brought into contact with each other by contacting each other,
At least one of both surfaces of the male tab and the receiving portion is formed with a stepped portion protruding toward the other,
The one plating layer is deposited with a substantially constant layer thickness, and a portion corresponding to the stepped portion is formed as a connecting portion capable of contacting the other plating layer, and the layer thickness of the plating layer is: A terminal fitting, wherein the terminal fitting is set to be larger than a protruding dimension of the stepped portion. 雄タブを備えた雄端子金具と、
前記雄タブの挿入方向に沿って形成された受け部とこの受け部との間に前記雄タブを挿入して弾性的に挟持する接触片とを備えた雌端子金具とからなり、
前記雄タブと前記接触片の両表面に形成されたメッキ層が互いに当接し合うことで双方の接続がとられる端子金具であって、
前記雄タブと前記接触片の両表面のうちの少なくともいずれか一方には、他方に向けて突出する段差部が形成され、
前記一方のメッキ層は、ほぼ一定層厚で被着されるとともに前記段差部と対応する部分を前記他方のメッキ層に当接可能な接続部となし、かつ、このメッキ層の層厚が、前記段差部の突出寸法よりも大きく設定されていることを特徴とする端子金具。 A male terminal fitting with a male tab;
A female terminal fitting comprising a receiving part formed along the insertion direction of the male tab and a contact piece for elastically clamping the male tab between the receiving part,
A terminal fitting in which both the male tab and the plating layer formed on both surfaces of the contact piece are brought into contact with each other by contacting each other,
At least one of both surfaces of the male tab and the contact piece is formed with a stepped portion protruding toward the other,
The one plating layer is deposited with a substantially constant layer thickness, and a portion corresponding to the stepped portion is formed as a connecting portion capable of contacting the other plating layer, and the layer thickness of the plating layer is: A terminal fitting, wherein the terminal fitting is set to be larger than a protruding dimension of the stepped portion. 前記接続部は、前記雄タブの挿入方向の前後位置に間隔をあけて複数配置されていることを特徴とする請求項１または請求項２に記載の端子金具。 The terminal fitting according to claim 1 or 2, wherein a plurality of the connecting portions are arranged at intervals in front and rear positions in the insertion direction of the male tab. 前記接続部は、前記雄タブの挿入方向に沿って複数並んで延出するとともに、このうちの少なくとも２つが、互いの突出寸法を異にして構成されていることを特徴とする請求項１または請求項２に記載の端子金具。 2. The connection portion according to claim 1, wherein a plurality of the connection portions extend side by side along the insertion direction of the male tab, and at least two of the connection portions are configured to have different projecting dimensions. The terminal fitting according to claim 2. 前記接続部は、階段状に突出した凸部として構成されていることを特徴とする請求項１または請求項２に記載の端子金具。 The terminal fitting according to claim 1, wherein the connection portion is configured as a convex portion protruding in a stepped manner. 前記他方のメッキ層には、雌雄の両端子金具が接続状態にあるときに、前記接続部を嵌め入れる凹部が形成され、この凹部の底面に前記接続部が当接可能とされていることを特徴とする請求項１ないし請求項５のいずれかに記載の端子金具。 When the male and female terminal fittings are in a connected state, the other plating layer is formed with a recess into which the connection portion is fitted, and the connection portion can be brought into contact with the bottom surface of the recess. The terminal fitting according to any one of claims 1 to 5, characterized in that:
JP2004363128A 2004-12-15 2004-12-15 Terminal fitting Pending JP2006172877A (en)

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