JP2015210868A - Contact connection structure - Google Patents

Contact connection structure Download PDF

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JP2015210868A
JP2015210868A JP2014090125A JP2014090125A JP2015210868A JP 2015210868 A JP2015210868 A JP 2015210868A JP 2014090125 A JP2014090125 A JP 2014090125A JP 2014090125 A JP2014090125 A JP 2014090125A JP 2015210868 A JP2015210868 A JP 2015210868A
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contact
terminal
connection structure
indent
tab
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JP6401490B2 (en
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義貴 伊藤
Yoshitaka Ito
義貴 伊藤
大沼 雅則
Masanori Onuma
雅則 大沼
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Yazaki Corp
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Yazaki Corp
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Priority to JP2014090125A priority Critical patent/JP6401490B2/en
Priority to PCT/JP2015/062546 priority patent/WO2015163454A1/en
Priority to DE112015001904.9T priority patent/DE112015001904T5/en
Publication of JP2015210868A publication Critical patent/JP2015210868A/en
Priority to US15/290,007 priority patent/US9871311B2/en
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Abstract

PROBLEM TO BE SOLVED: To provide a contact connection structure capable of reducing contact resistance without upsizing a terminal and complexing the terminal as much as possible.SOLUTION: A contact connection structure comprises first contact parts 2a and 3 in which an indent part 4 is installed in a protruding manner and a tab part 11. In a terminal insertion process, the indent parts 4 of the first contact parts 2a and 3 slide on a contact surface of the tab part 11. In a terminal insertion completion position, an outer peripheral surface of the indent part 4 comes into contact with the tab part 11. The contact surface of the tab part 11 is formed on a surface 12 with a rough surface.

Description

本発明は、第1端子と第2端子間の電気的接続を行う接点接続構造に関する。   The present invention relates to a contact connection structure that performs electrical connection between a first terminal and a second terminal.

図5及び図6には、従来の接点接続構造を適用したメス端子とオス端子が示されている類似技術として特許文献1参照)。図5、図6及び図7に示すように、メス端子51は、四角形状の箱部52と、この箱部52に一体に設けられ、箱部52内に配置された弾性撓み部53とを有する。弾性撓み部53には、底面側に向かって突出するインデント部54が設けられている。インデント部54は、その外周面がほぼ球面形状であり、中心の頂点が最下方に位置している。   5 and 6 show a similar technique in which a female terminal and a male terminal to which a conventional contact connection structure is applied are shown (see Patent Document 1). As shown in FIGS. 5, 6, and 7, the female terminal 51 includes a rectangular box portion 52 and an elastic bending portion 53 that is provided integrally with the box portion 52 and disposed in the box portion 52. Have. The elastic bending portion 53 is provided with an indent portion 54 that protrudes toward the bottom surface side. The indented portion 54 has a substantially spherical outer peripheral surface, and the center vertex is located at the lowest position.

図5、図6及び図8に示すように、オス端子60は、平板状のタブ部61を有する。   As shown in FIGS. 5, 6, and 8, the male terminal 60 has a flat tab portion 61.

上記構成において、図5の位置にあって、オス端子60のタブ部61をメス端子51の箱部52に挿入すると、弾性撓み部53が撓み変形してタブ部61の挿入が許容される。タブ部61の挿入過程では、弾性撓み部53のインデント部54がタブ部61の接触面を摺動し、端子挿入完了位置では、図6及び図9に示すように、弾性撓み部53のインデント部54とタブ部61の接触面が接触する。端子挿入完了位置では、弾性撓み部53の撓み復帰力を接触荷重として、メス端子51のインデント部54とオス端子60のタブ部61の接触面とが電気的に接触する。   In the above configuration, when the tab portion 61 of the male terminal 60 is inserted into the box portion 52 of the female terminal 51 in the position of FIG. 5, the elastic bending portion 53 is deformed and the insertion of the tab portion 61 is allowed. In the insertion process of the tab portion 61, the indent portion 54 of the elastic bending portion 53 slides on the contact surface of the tab portion 61, and at the terminal insertion completion position, as shown in FIGS. 6 and 9, the indentation of the elastic bending portion 53 is performed. The contact surface of the part 54 and the tab part 61 contacts. At the terminal insertion completion position, the indented portion 54 of the female terminal 51 and the contact surface of the tab portion 61 of the male terminal 60 are in electrical contact with each other using the bending return force of the elastic bending portion 53 as a contact load.

特開2007−280825号公報JP 2007-280825 A

しかしながら、前記従来の構造では、メス端子51のインデント部54がほぼ球面形状であり、インデント部54の外周面の頂点箇所でのみオス端子60のタブ部61と接触する。ここで、双方の接触面は、みかけの接触面E2(接触面径D2)の全領域において実質的に接触しているわけではない。みかけの接触面E2の内で実際に接触する面(真実接触面A)のみが電気的通電を担う。みかけの接触面E2は、図10(a)では明確化のためハッチング表示する。   However, in the conventional structure, the indent portion 54 of the female terminal 51 has a substantially spherical shape, and contacts the tab portion 61 of the male terminal 60 only at the apex portion of the outer peripheral surface of the indent portion 54. Here, the both contact surfaces are not in substantial contact with each other in the entire region of the apparent contact surface E2 (contact surface diameter D2). Of the apparent contact surface E2, only the surface that actually contacts (true contact surface A) is responsible for electrical conduction. The apparent contact surface E2 is hatched for clarity in FIG.

従来例では、インデント部54とタブ部61の接触面は共に平滑な面に形成されているが、実際には少ない凹凸が形成された面である。このように少ない凹凸面同士の接触では、図10(b)に示すように、みかけの接触面E2の範囲内の真実接触面Aの数が少なくなるため、接触抵抗が大きくなる。   In the conventional example, both the indented portion 54 and the contact surface of the tab portion 61 are formed as smooth surfaces, but in actuality, they are surfaces on which few irregularities are formed. In such a contact between the concavo-convex surfaces, as shown in FIG. 10B, the number of the true contact surfaces A within the range of the apparent contact surface E2 is reduced, so that the contact resistance is increased.

ここで、みかけの接触面径を大きくして接触抵抗の低減を図るため、弾性撓み部の撓み復帰力(接触荷重)を大きくしたり、接点部(インデント部54)を大型化したりすることが考えられるが、端子51,60が大型化したり、複雑化する。   Here, in order to reduce the contact resistance by increasing the apparent contact surface diameter, it is possible to increase the bending return force (contact load) of the elastic bending portion or increase the size of the contact portion (indent portion 54). Though conceivable, the terminals 51 and 60 become larger or complicated.

そこで、本発明は、前記した課題を解決すべくなされたものであり、端子を大型化したり、極力複雑化したりすることなく、接触抵抗を低減できる接点接続構造を提供することを目的とする。   Therefore, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a contact connection structure capable of reducing contact resistance without increasing the size of a terminal or making it as complex as possible.

本発明は、インデント部が突設された第1接点部と、第2接点部とを有し、端子挿入過程では、前記第1接点部の前記インデント部が前記第2接点部の接触面上を摺動し、端子挿入完了位置では、前記インデント部の外周面が前記第2接点部に接触する接点接続構造であって、前記第2接点部の接触面は、表面粗さの粗い面に形成されていることを特徴とする接点接続構造である。   The present invention includes a first contact portion having a projecting indent portion and a second contact portion, and the indent portion of the first contact portion is on a contact surface of the second contact portion in a terminal insertion process. And a contact connection structure in which the outer peripheral surface of the indent portion contacts the second contact portion at the terminal insertion completion position, and the contact surface of the second contact portion is a surface having a rough surface. It is the contact connection structure characterized by being formed.

表面粗さの粗い面は、放電目パターンの凹凸により形成されたものを含む。表面粗さの粗い面は、前記第2接点部の接触面に多数の微小突起を突設して形成されたものを含む。   The rough surface includes those formed by the unevenness of the discharge eye pattern. The rough surface includes a surface formed by projecting a large number of minute protrusions on the contact surface of the second contact portion.

本発明によれば、第2接点部の表面粗さによって多数の凸形状が形成され、この多数の凸形状の箇所では確実に接触するため、インデント部と第2接点部の接触面は、双方が平滑な面の場合に比べて、インデント部と第2接点部間の真実接触面が多くなる。以上より、端子を大型化したり、極力複雑化したりすることなく、接触抵抗を低減できる。   According to the present invention, a large number of convex shapes are formed due to the surface roughness of the second contact portion, and the contact surfaces of the indent portion and the second contact portion are both in contact with each other at the numerous convex portions. Compared with a smooth surface, the true contact surface between the indent portion and the second contact portion increases. As described above, the contact resistance can be reduced without increasing the size of the terminal or making it as complex as possible.

本発明の第1実施形態を示し、端子接続前のメス端子とオス端子の断面図である。It is sectional drawing of the female terminal and male terminal which show 1st Embodiment of this invention and does not connect a terminal. 本発明の第1実施形態を示し、(a)は端子接続状態のメス端子とオス端子の断面図、(b)は接点接続箇所の要部断面図、(c)はみかけの接触面と真実接触面を示す図である。1 shows a first embodiment of the present invention, where (a) is a cross-sectional view of a female terminal and a male terminal in a terminal connection state, (b) is a cross-sectional view of an essential part of a contact connection point, and (c) is an apparent contact surface and truth. It is a figure which shows a contact surface. 本発明の第1実施形態を示し、(a)はオス端子の接点部の要部平面図、(b)は(a)のA−A線断面図である。The 1st Embodiment of this invention is shown, (a) is a principal part top view of the contact part of a male terminal, (b) is the sectional view on the AA line of (a). 本発明の第2実施形態を示し、(a)はオス端子の接点部の要部平面図、(b)は(a)のB−B線断面図、(c)はみかけの接触面と真実接触面を示す図である。The 2nd Embodiment of this invention is shown, (a) is a principal part top view of the contact part of a male terminal, (b) is the BB sectional drawing of (a), (c) is an apparent contact surface and truth. It is a figure which shows a contact surface. 従来例を示し、端子接続前のメス端子とオス端子の断面図である。It is a sectional view of a female terminal and a male terminal before showing a conventional example and connecting a terminal. 従来例を示し、端子接続状態のメス端子とオス端子の断面図である。It is a sectional view of a female terminal and a male terminal in a terminal connected state, showing a conventional example. 従来例を示し、(a)はメス端子の接点部の要部側面図、(b)は(a)のC矢視図である。A prior art example is shown, (a) is a principal part side view of the contact part of a female terminal, (b) is C arrow directional view of (a). 従来例を示し、(a)はオス端子の接点部の要部側面図、(b)はオス端子の接点部の要部平面図である。A prior art example is shown, (a) is a principal part side view of the contact part of a male terminal, (b) is a principal part top view of the contact part of a male terminal. 従来例を示し、接点接続箇所の要部側面図である。It is a principal part side view of a contact connection part which shows a prior art example. 従来例を示し、(a)みかけの接触面を示す図、(b)は真実接触面を示す図である。A prior art example is shown, (a) The figure which shows an apparent contact surface, (b) is a figure which shows a true contact surface.

以下、本発明の実施形態を図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(第1実施形態)
図1〜図3は本発明の第1実施形態を示す。第1端子であるメス端子と第2端子であるオス端子間に本発明に係る接点接続構造が適用されている。以下、説明する。
(First embodiment)
1 to 3 show a first embodiment of the present invention. The contact connection structure according to the present invention is applied between the female terminal as the first terminal and the male terminal as the second terminal. This will be described below.

メス端子1は、メス側コネクタハウジング(図示せず)内の端子収容室に配置されている。メス端子1は、所定形状に打ち抜かれた導電性金属(例えば銅合金)を折り曲げ加工して形成されている。メス端子1の外面には、錫メッキ層(図示せず)が形成されている。メス端子1は、オス端子10が挿入される前方を開口した方形状の箱部2と、この箱部2の上面部より延設され、箱部2内に配置された弾性撓み部3とを有する。弾性撓み部3には、底面側に向かって突出するインデント部4が設けられている。インデント部4は、その外周面がほぼ球面形状であり、中心の頂点が最下方に位置している。メス端子1は、弾性撓み部3と箱部2の底面部2aが第1接点部を形成している。   The female terminal 1 is disposed in a terminal accommodating chamber in a female connector housing (not shown). The female terminal 1 is formed by bending a conductive metal (for example, copper alloy) punched into a predetermined shape. A tin plating layer (not shown) is formed on the outer surface of the female terminal 1. The female terminal 1 includes a rectangular box part 2 having an opening in the front where the male terminal 10 is inserted, and an elastic bending part 3 that extends from the upper surface part of the box part 2 and is disposed in the box part 2. Have. The elastic bending portion 3 is provided with an indent portion 4 protruding toward the bottom surface side. The indented portion 4 has a substantially spherical outer peripheral surface, and the center vertex is located at the lowest position. In the female terminal 1, the elastic deflection portion 3 and the bottom surface portion 2 a of the box portion 2 form a first contact portion.

オス端子10は、オス側コネクタハウジング(図示せず)内の端子収容室に配置されている。オス端子10は、所定形状に打ち抜かれた導電性金属(例えば銅合金)を折り曲げ加工して形成されている。オス端子10の外面には、錫メッキ層(図示せず)が形成されている。オス端子10は、平板状のタブ部11を有する。オス端子10は、タブ部11が第2接点部を形成している。タブ部11の上面側(接触面側)には、端子挿入完了位置のインデント部4が位置する領域に表面粗さが粗い面12、つまり、凹凸面に形成されている。   The male terminal 10 is disposed in a terminal accommodating chamber in a male connector housing (not shown). The male terminal 10 is formed by bending a conductive metal (for example, copper alloy) punched into a predetermined shape. A tin plating layer (not shown) is formed on the outer surface of the male terminal 10. The male terminal 10 has a flat tab portion 11. As for the male terminal 10, the tab part 11 forms the 2nd contact part. On the upper surface side (contact surface side) of the tab portion 11, a surface 12 having a rough surface, that is, an uneven surface is formed in a region where the indent portion 4 at the terminal insertion completion position is located.

表面粗さの粗い面12は、この実施形態には、放電目パターンの凹凸である。放電目パターンの凹凸面は、タブ部11の接触面に放電目を残した金型をプレスすることにより簡単に作製できる。表面粗さの粗い面12は、算術平均粗さRaでは、2.5μm<Ra<5μmの範囲である。   In this embodiment, the surface 12 having a rough surface is unevenness of the discharge eye pattern. The uneven surface of the discharge eye pattern can be easily produced by pressing a mold that leaves a discharge eye on the contact surface of the tab portion 11. The surface 12 having a rough surface has a range of 2.5 μm <Ra <5 μm in terms of arithmetic average roughness Ra.

上記構成において、メス側コネクタハウジング(図示せず)とオス側コネクタハウジング(図示せず)間をかん合すると、そのかん合過程ではオス端子10のタブ部11がメス端子1の箱部2に挿入する。すると、先ずタブ部11の先端が弾性撓み部3に当接し、この当接箇所より更に挿入が進むと、弾性撓み部3が撓み変形してタブ部11の挿入が許容される。タブ部11の挿入過程では、タブ部11が弾性撓み部3のインデント部4上を摺動する。端子挿入完了位置(コネクタかん合完了位置)では、図2(b)に示すように、弾性撓み部3のインデント部4がタブ部11の表面粗さの粗い面12上に位置する。インデント部4の両店箇所とタブ部11の表面粗さの粗い面12で接触する。   In the above configuration, when the female connector housing (not shown) and the male connector housing (not shown) are mated, the tab portion 11 of the male terminal 10 is connected to the box portion 2 of the female terminal 1 in the mating process. insert. Then, first, the tip of the tab portion 11 comes into contact with the elastic bending portion 3, and when the insertion further proceeds from this contact portion, the elastic bending portion 3 is bent and deformed, and insertion of the tab portion 11 is allowed. In the insertion process of the tab portion 11, the tab portion 11 slides on the indent portion 4 of the elastic bending portion 3. At the terminal insertion completion position (connector mating completion position), as shown in FIG. 2B, the indent portion 4 of the elastic bending portion 3 is located on the surface 12 having a rough surface roughness of the tab portion 11. Both the indented portion 4 contacts with the surface 12 having a rough surface of the tab portion 11.

この接点接続構造では、オス端子10のタブ部11の接触面は、表面粗さの粗い面12に形成されている。表面粗さの粗い面12には、その表面に多数の凸形状ができ、その多数の凸形状の箇所で確実に接触し、多数の真実接触面が得られる。従って、インデント部4とタブ部11との接触面は、双方が平滑な面の場合に比べて、みかけの接触面径D1が従来と同じでもその範囲内の真実接触面Aの数が多くなる。以上より、メス端子1、オス端子10を大型化したり、極力複雑化したりすることなく、接触抵抗を低減できる。   In this contact connection structure, the contact surface of the tab portion 11 of the male terminal 10 is formed on the surface 12 having a rough surface. A large number of convex shapes are formed on the surface 12 having a rough surface roughness, and the surface is surely brought into contact with the portions of the large number of convex shapes, so that a large number of true contact surfaces are obtained. Accordingly, the contact surface between the indent portion 4 and the tab portion 11 has a larger number of true contact surfaces A within the range even if the apparent contact surface diameter D1 is the same as that of the conventional case, compared to the case where both surfaces are smooth. . As described above, the contact resistance can be reduced without increasing the size of the female terminal 1 and the male terminal 10 or complicating them as much as possible.

次に、Holmの接触理論式によって接触抵抗が小さくなることを説明する。Holmの接触理論式によれば、接触抵抗Rは、D:みかけの接触面径(直径)ρ:接点材料の抵抗率、a:真実接触面の半径、n:真実接触面の数とすると、R=(ρ/D)+(ρ/2na)によって算出される。本発明では、従来より真実接触面Aの数が多くなるため、接触抵抗が小さくなる。   Next, it will be described that the contact resistance is reduced by Holm's contact theory. According to Holm's theoretical contact formula, contact resistance R is expressed as follows: D: Apparent contact surface diameter (diameter) ρ: Resistivity of contact material, a: Radius of true contact surface, n: Number of true contact surfaces R = (ρ / D) + (ρ / 2na). In the present invention, since the number of true contact surfaces A is larger than in the prior art, the contact resistance is reduced.

(第2実施形態)
図4は、本発明の第2実施形態を示す。この第2実施形態は、前記第1実施形態と比較して、表面粗さの粗い面12の構成のみが相違する。つまり、第2実施形態では、表面粗さの粗い面12は、タブ部11の接触面に多数の微小突起12aを突設することによって形成されている。微小突起12aの高さhは、2.5μm<h<5μmの範囲である。微小突起12a間のピッチ間隔dは、5μm<d<20μmの範囲である。
(Second Embodiment)
FIG. 4 shows a second embodiment of the present invention. The second embodiment is different from the first embodiment only in the configuration of the surface 12 having a rough surface. That is, in the second embodiment, the surface 12 having a rough surface is formed by projecting a large number of minute protrusions 12 a on the contact surface of the tab portion 11. The height h of the microprotrusion 12a is in the range of 2.5 μm <h <5 μm. The pitch interval d between the minute protrusions 12a is in the range of 5 μm <d <20 μm.

他の構成は、前記第1実施形態と同様であるため、重複説明を省略する。   The other configuration is the same as that of the first embodiment, and a duplicate description is omitted.

この第2実施形態でも、第1実施形態と同様に、みかけの接触面径D1内の真実接触面Aの数が多くなり、メス端子1、オス端子10を大型化したり、極力複雑化したりすることなく、接触抵抗を低減できる。   Also in the second embodiment, as in the first embodiment, the number of the true contact surfaces A within the apparent contact surface diameter D1 increases, and the female terminal 1 and the male terminal 10 are increased in size or complicated as much as possible. Therefore, the contact resistance can be reduced.

(変形例)
実施形態では、各インデント部4はその外周面が球面形状であるが、各インデント部4の外周面の形状は限定されない。頂点を最も高い位置とし、外周に向かうに従って滑らかな曲面によって徐々に低くなる曲面形状でも、楕円球面でも、円錐形状でも、角錐形状でも良い。
(Modification)
In the embodiment, the outer peripheral surface of each indent portion 4 has a spherical shape, but the shape of the outer peripheral surface of each indent portion 4 is not limited. It may be a curved surface shape that has a vertex at the highest position and gradually decreases with a smooth curved surface toward the outer periphery, an elliptical spherical surface, a conical shape, or a pyramid shape.

1 メス端子(第1端子)
2a 底面部(第1接点部)
3 弾性撓み部(第1接点部)
4 インデント部
10 オス端子(第2端子)
11 タブ部(第2接点部)
12 表面粗さの粗い面
12a 微小突起
1 Female terminal (1st terminal)
2a Bottom part (first contact part)
3 Elastic flexure (first contact)
4 Indentation 10 Male terminal (second terminal)
11 Tab part (second contact part)
12 Surface with rough surface 12a Minute protrusion

Claims (3)

インデント部が突設された第1接点部と、第2接点部とを有し、端子挿入過程では、前記第1接点部の前記インデント部が前記第2接点部の接触面上を摺動し、端子挿入完了位置では、前記インデント部の外周面が前記第2接点部に接触する接点接続構造であって、
前記第2接点部の接触面は、表面粗さの粗い面に形成されていることを特徴とする接点接続構造。
In the terminal insertion process, the indented portion of the first contact portion slides on the contact surface of the second contact portion. In the terminal insertion completion position, a contact connection structure in which an outer peripheral surface of the indent portion contacts the second contact portion,
The contact connection structure according to claim 1, wherein the contact surface of the second contact portion is formed on a surface having a rough surface.
請求項1記載の接点接続構造であって、
表面粗さの粗い面は、放電目パターンの凹凸により形成されたであることを特徴とする接点接続構造。
The contact connection structure according to claim 1,
The contact connection structure, wherein the surface having a rough surface is formed by irregularities of the discharge eye pattern.
請求項1記載の接点接続構造であって、
表面粗さの粗い面は、前記第2接点部の接触面に多数の微小突起を突設して形成されたことを特徴とする接点接続構造。
The contact connection structure according to claim 1,
The surface having a rough surface is formed by projecting a large number of minute protrusions on the contact surface of the second contact portion.
JP2014090125A 2014-04-24 2014-04-24 Contact connection structure Active JP6401490B2 (en)

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JP2014090125A JP6401490B2 (en) 2014-04-24 2014-04-24 Contact connection structure
PCT/JP2015/062546 WO2015163454A1 (en) 2014-04-24 2015-04-24 Contact connection structure
DE112015001904.9T DE112015001904T5 (en) 2014-04-24 2015-04-24 Contact interconnect structure
US15/290,007 US9871311B2 (en) 2014-04-24 2016-10-11 Contact connection structure for removing oxide buildup

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Publication number Priority date Publication date Assignee Title
CN113851872A (en) * 2020-06-26 2021-12-28 爱沛股份有限公司 Terminal with a terminal body

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JPH0536447A (en) * 1991-07-30 1993-02-12 Japan Aviation Electron Ind Ltd Contact having contact part having precise stepped surface and manufacture of the same
JP2001028287A (en) * 1999-07-13 2001-01-30 Shin Etsu Polymer Co Ltd Electrical connector
JP2011202266A (en) * 2010-03-26 2011-10-13 Kobe Steel Ltd Mating-type connecting part and method of producing the same
JP2013101915A (en) * 2011-10-14 2013-05-23 Dowa Metaltech Kk Mating-type connection terminal, and method for manufacturing the same
WO2014034460A1 (en) * 2012-08-31 2014-03-06 株式会社オートネットワーク技術研究所 Plated terminal for connector, and terminal pair

Patent Citations (5)

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JPH0536447A (en) * 1991-07-30 1993-02-12 Japan Aviation Electron Ind Ltd Contact having contact part having precise stepped surface and manufacture of the same
JP2001028287A (en) * 1999-07-13 2001-01-30 Shin Etsu Polymer Co Ltd Electrical connector
JP2011202266A (en) * 2010-03-26 2011-10-13 Kobe Steel Ltd Mating-type connecting part and method of producing the same
JP2013101915A (en) * 2011-10-14 2013-05-23 Dowa Metaltech Kk Mating-type connection terminal, and method for manufacturing the same
WO2014034460A1 (en) * 2012-08-31 2014-03-06 株式会社オートネットワーク技術研究所 Plated terminal for connector, and terminal pair

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113851872A (en) * 2020-06-26 2021-12-28 爱沛股份有限公司 Terminal with a terminal body

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