JP3670544B2 - Mating type connection terminal - Google Patents

Mating type connection terminal Download PDF

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Publication number
JP3670544B2
JP3670544B2 JP2000011200A JP2000011200A JP3670544B2 JP 3670544 B2 JP3670544 B2 JP 3670544B2 JP 2000011200 A JP2000011200 A JP 2000011200A JP 2000011200 A JP2000011200 A JP 2000011200A JP 3670544 B2 JP3670544 B2 JP 3670544B2
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Prior art keywords
terminal
tin plating
tab
fitting
type connection
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JP2001203021A (en
Inventor
準 塩谷
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Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、自動車、産業機器などの電気配線に用いられる嵌合型接続端子に関する。
【0002】
【従来の技術】
従来より、自動車、産業用機械、家庭用電気製品などの内部配線の接続においては、雄端子と雌端子との嵌合によって電気的接触を得る嵌合型接続端子が用いられている。従来の嵌合型接続端子においては、雄端子および雌端子のそれぞれに約1.0μmの厚さの錫めっきを施していた。これは、錫の凝着によって低い接触抵抗を安定して得るためである。
【0003】
ところが、錫めっきを施した端子においては、錫の硬度が低いため、端子接続時に錫の凝着摩耗が発生し、端子挿入力を上昇させるという問題があった。特に、近年のカーエレクトロニクスの進展によって多極化したコネクタの接続においては、個々の端子の挿入力上昇は重要な問題である。
【0004】
そこで、本願発明者等は、錫めっきの厚さを薄くすることによって接触抵抗を増大させることなく嵌合時の挿入力を低減できる嵌合型接続端子を提案した(特開平10−302864号公報)。嵌合型接続端子の錫めっき厚さが薄くなるにしたがって、母材である銅または銅合金の硬度が端子の硬度に影響するようになり、端子の見かけの硬度が高くなる。その結果、錫めっきの凝着摩耗が抑制され、挿入力を低減できるのである。
【0005】
【発明が解決しようとする課題】
しかしながら、上記提案に係る嵌合型接続端子においては、雄端子と雌端子との接触部分が比較的移動し易いため、微摺動摩耗劣化が生じる可能性がある。微摺動摩耗劣化とは、温度昇降や振動といった環境の影響により雄端子と雌端子とが相対的に移動し、端子表面の錫めっきが削れて摩耗粉が堆積した結果、その摩耗粉が酸化し、当該酸化粉上に接点が乗り上げて接触抵抗が増大する現象である。
【0006】
本発明は、上記課題に鑑みてなされたものであり、挿入力を低減しつつも、微摺動摩耗劣化を防止することができる嵌合型接続端子を提供することを目的とする。
【0007】
【課題を解決するための手段】
上記課題を解決するため、請求項1の発明は、嵌合部を有する雄端子と第1摺動部および第2摺動部を有する雌端子とを接続し、挿入時には前記嵌合部を前記第2摺動部とのみ接触させ、挿入完了後に前記嵌合部を前記第1摺動部と前記第2摺動部との間に嵌合することによって電気的接触を得る嵌合型接続端子であって、前記嵌合部と前記第1摺動部との摩擦係数を大きくし、逆に前記嵌合部と前記第2摺動部との摩擦係数を小さくしている
【0008】
また、請求項2の発明は、請求項1の発明に係る嵌合型接続端子において、前記嵌合部をタブとし、前記第1摺動部をビードとし、前記第2摺動部をエンボスとしている。
【0010】
【発明の実施の形態】
以下、図面を参照しつつ本発明の実施の形態について詳細に説明する。
【0011】
図1は本発明に係る嵌合型接続端子の側面図であり、また、図2は当該嵌合型接続端子の接続部分の平面図である。
【0012】
図示のように、本発明に係る嵌合型接続端子は雄端子10と雌端子20とで構成されている。雄端子10は、電線との圧着部であるインシュレーションバレル13、ワイヤバレル11と、雌端子20との嵌合部であるタブ12とを形成している。また、タブ12の上面12aおよび下面12bは平滑な摺動面としている。
【0013】
雌端子20は、電線との圧着部であるインシュレーションバレル26、ワイヤバレル24と、雄端子10との接続部25とを形成している。接続部25は、中空の箱形状であり、舌片21、エンボス22(第2摺動部)およびビード23(第1摺動部)をその内部に備えている。なお、図2は、接続部25の内部を示した平面図である。
【0014】
エンボス22は、舌片21の上部に設けられた凸状の部材であり、雄端子10との嵌合時には、タブ12の摺動面である下面12bと点接触する。舌片21は、接点圧力すなわちエンボス22をタブ12に押しつける圧力を作用させるバネとしての機能を有している。また、ビード23も凸状の部材であり、タブ12とエンボス22が接触する面と反対側の摺動面、すなわち上面12aで接触し、当該エンボス22がタブ12に及ぼす接点圧力を受ける。
【0015】
雄端子10を雌端子20に嵌合させる際には、タブ12をエンボス22とビード23との間に嵌合することによって電気的接触を得る。
【0016】
上記の雄端子10および雌端子20においては、その母材を銅または銅合金とし、表面には錫めっきを施している。錫めっきを施すのは、安定した低い接触抵抗を得るためである。このときの雄端子10および雌端子20に形成する錫めっき層の厚さと端子挿入力との相関は以下の表1のようになる。
【0017】
【表1】

Figure 0003670544
【0018】
また、図3は表1の相関関係を示す図である。従来における両端子への錫めっき厚さを1.0μmとすると、端子挿入力は0.74kgfである。以下、この従来の挿入力を基準値として説明を続ける。
【0019】
表1に示すように、雄端子10または雌端子20の嵌合部分うちの一方の錫めっき厚さを0.1μm〜0.3μmとし、他方の錫めっき厚さを0.1μm以上とすると、基準値と比較して挿入力を少なくとも10%以上低減(0.65kgf以下)できる。これは、錫めっき層が薄くなるにしたがって、母材である銅または銅合金の硬度が端子の硬度に影響するようになり、端子の見かけの硬度が高くなる。そして、端子の見かけの硬度が高くなることによって、錫めっきの凝着が抑制され、挿入力が低くなったのである。
【0020】
もっとも、錫めっきは摺動部分の潤滑剤としての機能も有しており、雄端子10および雌端子20の両方ともに錫めっき厚さを0.1μmとした場合には、錫めっきの潤滑剤としての機能が喪失して、雄端子10と雌端子20との噛み込みが生じ、挿入力が高くなっている。
【0021】
表1および図3の内容を定性的に表現すれば、雄端子10または雌端子20の一方に0.1μmの薄錫めっきを施し、他方に従来と同様の厚錫めっきを施せば挿入力を低減することができるものの、雄端子10および雌端子20の双方ともに0.1μmの薄錫めっきを施した場合は噛み込みにより挿入力が高くなると言える。また、雄端子10および雌端子20の双方ともに従来と同様の厚錫めっきを施した場合も凝着により挿入力は高い。
【0022】
一方、次の表2は雄端子10および雌端子20に形成する錫めっき層の厚さとそれらの間の摩擦係数との相関を示すものである。
【0023】
【表2】
Figure 0003670544
【0024】
ここでの摩擦係数は見掛けの最大静止摩擦係数であり、上記の端子挿入力を接触荷重にて除したものである。錫めっき厚さと摩擦係数との相関は、錫めっき厚さと端子挿入力との相関と概ね同様の傾向を示しており、雄端子10の錫めっき層が薄くなるにしたがって、摩擦係数も小さくなっている。また、雄端子10および雌端子20の両方ともに錫めっき厚さを0.1μmとした場合には、摩擦係数が若干高くなっている。
【0025】
従って、表2より、雄端子10または雌端子20の一方に0.1μmの薄錫めっきを施し、他方に従来と同様の厚錫めっきを施せば摩擦係数を小さくすることができるものの、雄端子10および雌端子20の双方ともに0.1μmの薄錫めっきを施した場合は摩擦係数が大きくなると考えられる。また、雄端子10および雌端子20の双方ともに従来と同様の厚錫めっきを施した場合も摩擦係数は大きいと言える。
【0026】
そして、本発明に係る嵌合型接続端子においては、雄端子10のタブ12と雌端子20のビード23との摩擦係数を大きく、逆にタブ12とエンボス22との摩擦係数を小さくしている。
【0027】
具体的には、例えば、雄端子10の全体に0.1μmの薄錫めっきを施し、雌端子20には従来と同様の厚錫めっき(例えば、1.0μm)を施す。そして、雌端子20のビード23のみに0.1μmの薄錫めっきを部分的に施すのである。或いは、雌端子20に0.1μmの薄錫めっきを施し、エンボス22のみ部分的に1.0μmの厚めっきを施す。すなわち、雄端子10のタブ12には0.1μmの薄錫めっき層が形成され、雌端子20のビード23には0.1μmの薄錫めっき層が形成され、エンボス22には厚錫めっき層が形成されることとなる。
【0028】
このようにすれば、表1および表2より、雄端子10のタブ12と雌端子20のエンボス22との摩擦係数および挿入力は小さくなる一方で、それと比較して雄端子10のタブ12と雌端子20のビード23との摩擦係数および挿入力が噛み込みにより大きくなる。すなわち、タブ12とビード23との摩擦係数が大きく、逆にタブ12とエンボス22との摩擦係数が小さくなる。
【0029】
このような嵌合型接続端子の接続時において、雄端子10を雌端子20に挿入するときには、例えば治具等を用いてタブ12がエンボス22とのみ接触するようにし、挿入完了後にその治具等を除いてタブ12をエンボス22とビード23との間に嵌合させた状態にする。なお、治具等とタブ12との摩擦係数は小さい方が好ましい。
【0030】
以上のようにすれば、挿入時にはタブ12がエンボス22とのみ接触し、ビード23とは接触しないため端子接続に要する挿入力を低減することができ、挿入完了後にはエンボス22とビード23との間にタブ12が嵌合された状態となり、タブ12とビード23との間の摩擦係数が噛み込みにより高いため、雄端子10と雌端子20との接触部分が移動しにくくなり、微摺動摩耗劣化を防止することができる。
【0031】
なお、本件発明をタブ12とビード23との摩擦係数の方をタブ12とエンボス22との摩擦係数よりも大きくすることによっているのは、タブ12とビード23との接触面積が大きく、その摩擦力がタブ12とエンボス22との摩擦力よりも大幅に大きいためであり、挿入時にはより効果的に挿入力を低減しつつも、挿入完了後はより効果的に微摺動摩耗劣化を防止することができるからである。
【0032】
以上、本発明の実施の形態について説明したが、この発明は上記の例に限定されるものではない。例えば、上記実施形態においては、タブ12およびビード23に0.1μmの薄錫めっきを施し、エンボス22に従来と同様の厚錫めっきを施していたが、これを以下のようにしても良い。
【0033】
例えば、第2の態様として、雄端子10に0.1μmの薄錫めっきを施し、雌端子20の全体に従来と同様の厚錫めっきを施す。そして、雄端子10のタブ12のうちの上面12aのみに厚錫めっきを部分的に施すのである。すなわち、雄端子10のタブ12の上面12aには厚錫めっき層が形成され、下面12bには0.1μmの薄錫めっき層が形成され、雌端子20のビード23およびエンボス22には厚錫めっき層が形成されることとなる。
【0034】
また、第3の態様として、雄端子10の全体に従来と同様の厚錫めっきを施し、雌端子20に0.1μmの薄錫めっきを施す。そして、雌端子20のビード23のみに厚錫めっきを部分的に施すのである。すなわち、雄端子10のタブ12には厚錫めっき層が形成され、雌端子20のビード23には厚錫めっき層が形成され、エンボス22には0.1μmの薄錫めっき層が形成されることとなる。
【0035】
さらに、第4の態様として、雄端子10に従来と同様の厚錫めっきを施し、雌端子20の全体に0.1μmの薄錫めっきを施す。そして、雄端子10のタブ12のうちの上面12aのみに0.1μmの薄錫めっきを部分的に施すのである。或いは、雄端子10に0.1μmの薄錫めっきを施し、雌端子20の全体にも0.1μmの薄錫めっきを施す。そして、雄端子10のタブ12のうちの下面12bのみに厚錫めっきを部分的に施すのである。すなわち、雄端子10のタブ12の上面12aには0.1μmの薄錫めっき層が形成され、下面12bには厚錫めっき層が形成され、雌端子20のビード23およびエンボス22には0.1μmの薄錫めっき層が形成されることとなる。
【0036】
これらのいずれの態様においても、雄端子10のタブ12と雌端子20のエンボス22との摩擦係数および挿入力は低くなる一方で、それと比較して雄端子10のタブ12と雌端子20のビード23との摩擦係数および挿入力が凝着または噛み込みにより高くなる。すなわち、タブ12とビード23との摩擦係数が大きく、逆にタブ12とエンボス22との摩擦係数が小さくなる。従って、上記と同様な挿入方法により、端子接続に要する挿入力を低減することができるとともに、挿入完了後は雄端子10と雌端子20との接触部分が移動しにくくなり、微摺動摩耗劣化を防止することができる。
【0037】
【発明の効果】
以上説明したように、請求項1の発明によれば、嵌合部と第1摺動部との摩擦係数を大きく、逆に嵌合部と第2摺動部との摩擦係数を小さくしているため、挿入時は嵌合部と第2摺動部のみを使うことで挿入力を低減しつつも、挿入完了後は嵌合部と第1摺動部との間で接触部分が移動しにくくなり、微摺動摩耗劣化を防止することができる。
【0038】
また、請求項2の発明によれば、嵌合部をタブとし、第1摺動部をビードとし、第2摺動部をエンボスとしているため、より効果的に挿入力を低減しつつも、微摺動摩耗劣化を防止することができる。
【0040】
【図面の簡単な説明】
【図1】本発明に係る嵌合型接続端子の側面図である。
【図2】図1の嵌合型接続端子の接続部分の平面図である。
【図3】雄端子および雌端子に形成する錫めっき層の厚さと端子挿入力との相関を示す図である。
【符号の説明】
10 雄端子
12 タブ
12a 上面
12b 下面
20 雌端子
21 舌片
22 エンボス
23 ビード[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fitting type connection terminal used for electrical wiring of automobiles, industrial equipment and the like.
[0002]
[Prior art]
Conventionally, in connection of internal wiring of automobiles, industrial machines, household electric appliances, etc., fitting type connection terminals that obtain electrical contact by fitting between male terminals and female terminals have been used. In the conventional fitting-type connection terminal, tin plating with a thickness of about 1.0 μm is applied to each of the male terminal and the female terminal. This is because low contact resistance is stably obtained by the adhesion of tin.
[0003]
However, since the tin plated terminal has a low hardness, tin adhesion wear occurs when the terminal is connected, and the terminal insertion force is increased. In particular, in the connection of connectors that have become multipolar due to recent advances in car electronics, an increase in the insertion force of individual terminals is an important problem.
[0004]
Therefore, the present inventors have proposed a fitting type connection terminal that can reduce the insertion force at the time of fitting without increasing the contact resistance by reducing the thickness of the tin plating (Japanese Patent Laid-Open No. 10-302864). ). As the tin plating thickness of the fitting type connection terminal becomes thinner, the hardness of the base copper or copper alloy affects the hardness of the terminal, and the apparent hardness of the terminal increases. As a result, adhesive wear of tin plating is suppressed, and the insertion force can be reduced.
[0005]
[Problems to be solved by the invention]
However, in the fitting-type connection terminal according to the above proposal, the contact portion between the male terminal and the female terminal is relatively easy to move, so that there is a possibility that fine sliding wear deterioration may occur. Fine sliding wear deterioration is the result of the relative movement of the male and female terminals due to environmental effects such as temperature rise and fall, vibration of the terminal surface, and the wear powder accumulated as a result of scraping of the tin plating on the terminal surface. This is a phenomenon in which the contact resistance rises on the oxidized powder and the contact resistance increases.
[0006]
The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a fitting type connection terminal that can prevent the fine sliding wear deterioration while reducing the insertion force.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the invention of claim 1 connects a male terminal having a fitting portion and a female terminal having a first sliding portion and a second sliding portion, and the fitting portion is inserted at the time of insertion. A fitting type connection terminal that is brought into contact with only the second sliding portion and obtains electrical contact by fitting the fitting portion between the first sliding portion and the second sliding portion after completion of insertion. The friction coefficient between the fitting portion and the first sliding portion is increased, and conversely, the friction coefficient between the fitting portion and the second sliding portion is decreased .
[0008]
According to a second aspect of the present invention, in the fitting type connection terminal according to the first aspect of the invention, the fitting portion is a tab, the first sliding portion is a bead, and the second sliding portion is an emboss. Yes.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0011]
FIG. 1 is a side view of a fitting type connection terminal according to the present invention, and FIG. 2 is a plan view of a connection part of the fitting type connection terminal.
[0012]
As shown in the figure, the fitting type connection terminal according to the present invention includes a male terminal 10 and a female terminal 20. The male terminal 10 forms an insulation barrel 13, a wire barrel 11 that is a crimping portion with an electric wire, and a tab 12 that is a fitting portion with the female terminal 20. The upper surface 12a and the lower surface 12b of the tab 12 are smooth sliding surfaces.
[0013]
The female terminal 20 forms an insulation barrel 26, a wire barrel 24, and a connecting portion 25 with the male terminal 10, which are crimping portions with the electric wire. The connecting portion 25 has a hollow box shape and includes a tongue piece 21, an emboss 22 (second sliding portion), and a bead 23 (first sliding portion) therein. FIG. 2 is a plan view showing the inside of the connecting portion 25.
[0014]
The emboss 22 is a convex member provided on the upper portion of the tongue piece 21, and comes into point contact with the lower surface 12 b that is a sliding surface of the tab 12 when mated with the male terminal 10. The tongue piece 21 has a function as a spring that applies contact pressure, that is, pressure that presses the emboss 22 against the tab 12. Further, the bead 23 is also a convex member, which is in contact with the sliding surface opposite to the surface where the tab 12 and the emboss 22 are in contact, that is, the upper surface 12a, and receives contact pressure exerted on the tab 12 by the emboss 22.
[0015]
When the male terminal 10 is fitted to the female terminal 20, electrical contact is obtained by fitting the tab 12 between the emboss 22 and the bead 23.
[0016]
In the male terminal 10 and the female terminal 20, the base material is copper or a copper alloy, and the surface is tin-plated. The tin plating is performed in order to obtain a stable low contact resistance. The correlation between the thickness of the tin plating layer formed on the male terminal 10 and the female terminal 20 at this time and the terminal insertion force is as shown in Table 1 below.
[0017]
[Table 1]
Figure 0003670544
[0018]
FIG. 3 is a diagram showing the correlation in Table 1. When the tin plating thickness on both terminals in the related art is 1.0 μm, the terminal insertion force is 0.74 kgf. Hereinafter, the description will be continued with the conventional insertion force as a reference value.
[0019]
As shown in Table 1, when the tin plating thickness of one of the fitting portions of the male terminal 10 or the female terminal 20 is 0.1 μm to 0.3 μm and the other tin plating thickness is 0.1 μm or more, The insertion force can be reduced by at least 10% or more (0.65 kgf or less) compared to the reference value. This is because as the tin plating layer becomes thinner, the hardness of copper or copper alloy as a base material affects the hardness of the terminal, and the apparent hardness of the terminal increases. And by increasing the apparent hardness of the terminals, the adhesion of tin plating was suppressed and the insertion force was lowered.
[0020]
However, tin plating also has a function as a lubricant for sliding parts. When both the male terminal 10 and the female terminal 20 have a tin plating thickness of 0.1 μm, the tin plating is used as a lubricant for tin plating. Is lost, the male terminal 10 and the female terminal 20 are bitten, and the insertion force is high.
[0021]
If the contents of Table 1 and FIG. 3 are expressed qualitatively, the insertion force can be increased by applying a thin tin plating of 0.1 μm to one of the male terminal 10 or the female terminal 20 and the same thick tin plating to the other. Although it can be reduced, when both the male terminal 10 and the female terminal 20 are subjected to thin tin plating of 0.1 μm, it can be said that the insertion force is increased by biting. Also, both the male terminal 10 and the female terminal 20 have a high insertion force due to adhesion even when the same thick tin plating is applied as in the prior art.
[0022]
On the other hand, the following Table 2 shows the correlation between the thickness of the tin plating layer formed on the male terminal 10 and the female terminal 20 and the friction coefficient therebetween.
[0023]
[Table 2]
Figure 0003670544
[0024]
The friction coefficient here is an apparent maximum static friction coefficient, and is obtained by dividing the terminal insertion force by the contact load. The correlation between the tin plating thickness and the friction coefficient shows almost the same tendency as the correlation between the tin plating thickness and the terminal insertion force. As the tin plating layer of the male terminal 10 becomes thinner, the friction coefficient becomes smaller. Yes. Further, when both the male terminal 10 and the female terminal 20 have a tin plating thickness of 0.1 μm, the friction coefficient is slightly higher.
[0025]
Therefore, from Table 2, the friction coefficient can be reduced by applying 0.1 μm thin tin plating to one of the male terminal 10 or the female terminal 20 and applying the same thick tin plating to the other. It is considered that the friction coefficient increases when both the 10 and female terminals 20 are plated with 0.1 μm thin tin. It can also be said that the friction coefficient is large when both the male terminal 10 and the female terminal 20 are subjected to the same thick tin plating as in the prior art.
[0026]
In the fitting type connection terminal according to the present invention, the friction coefficient between the tab 12 of the male terminal 10 and the bead 23 of the female terminal 20 is increased, and conversely, the friction coefficient between the tab 12 and the emboss 22 is decreased. .
[0027]
Specifically, for example, thin tin plating of 0.1 μm is applied to the entire male terminal 10, and thick tin plating (for example, 1.0 μm) similar to the conventional one is applied to the female terminal 20. Then, a thin tin plating of 0.1 μm is partially applied only to the bead 23 of the female terminal 20. Alternatively, a thin tin plating of 0.1 μm is applied to the female terminal 20, and a thick plating of 1.0 μm is partially applied only to the emboss 22. That is, a thin tin plating layer of 0.1 μm is formed on the tab 12 of the male terminal 10, a thin tin plating layer of 0.1 μm is formed on the bead 23 of the female terminal 20, and a thick tin plating layer is formed on the emboss 22. Will be formed.
[0028]
In this manner, from Tables 1 and 2, the friction coefficient and insertion force between the tab 12 of the male terminal 10 and the emboss 22 of the female terminal 20 are reduced, while the tab 12 of the male terminal 10 is compared with that. The friction coefficient and insertion force between the female terminal 20 and the bead 23 increase due to biting. That is, the friction coefficient between the tab 12 and the bead 23 is large, and conversely, the friction coefficient between the tab 12 and the emboss 22 is small.
[0029]
When the male terminal 10 is inserted into the female terminal 20 during connection of such a fitting type connection terminal, the tab 12 is brought into contact only with the emboss 22 using, for example, a jig and the jig is inserted after the insertion is completed. The tab 12 is fitted between the emboss 22 and the bead 23 except for the above. It is preferable that the coefficient of friction between the jig and the tab 12 is small.
[0030]
In this way, the tab 12 contacts only the emboss 22 and does not contact the bead 23 at the time of insertion, so that the insertion force required for terminal connection can be reduced, and the emboss 22 and the bead 23 can be reduced after the insertion is completed. Since the tab 12 is fitted between the tab 12 and the bead 23, the friction coefficient between the tab 12 and the bead 23 is high due to the bite, and the contact portion between the male terminal 10 and the female terminal 20 is difficult to move and slightly slides. Abrasion deterioration can be prevented.
[0031]
The reason why the friction coefficient between the tab 12 and the bead 23 is made larger than the friction coefficient between the tab 12 and the emboss 22 in the present invention is that the contact area between the tab 12 and the bead 23 is large. This is because the force is much larger than the frictional force between the tab 12 and the embossing 22, and the insertion force is more effectively reduced at the time of insertion, but after the insertion is completed, the fine sliding wear deterioration is more effectively prevented. Because it can.
[0032]
While the embodiments of the present invention have been described above, the present invention is not limited to the above examples. For example, in the above embodiment, the tab 12 and the bead 23 are subjected to 0.1 μm thin tin plating, and the emboss 22 is subjected to the same thick tin plating as before. However, this may be performed as follows.
[0033]
For example, as a second aspect, 0.1 μm thin tin plating is applied to the male terminal 10, and the same thick tin plating as in the conventional case is applied to the entire female terminal 20. Then, thick tin plating is partially applied only to the upper surface 12 a of the tab 12 of the male terminal 10. That is, a thick tin plating layer is formed on the upper surface 12 a of the tab 12 of the male terminal 10, a thin tin plating layer of 0.1 μm is formed on the lower surface 12 b, and a thick tin plating is formed on the bead 23 and the emboss 22 of the female terminal 20. A plating layer will be formed.
[0034]
Further, as a third aspect, the same thick tin plating as in the conventional case is applied to the entire male terminal 10, and a thin tin plating of 0.1 μm is applied to the female terminal 20. Then, only the bead 23 of the female terminal 20 is partially subjected to thick tin plating. That is, a thick tin plating layer is formed on the tab 12 of the male terminal 10, a thick tin plating layer is formed on the bead 23 of the female terminal 20, and a thin tin plating layer of 0.1 μm is formed on the emboss 22. It will be.
[0035]
Furthermore, as a fourth aspect, the same thick tin plating as in the conventional case is applied to the male terminal 10, and a thin tin plating of 0.1 μm is applied to the entire female terminal 20. Then, a thin tin plating of 0.1 μm is partially applied only to the upper surface 12 a of the tab 12 of the male terminal 10. Alternatively, 0.1 μm thin tin plating is applied to the male terminal 10, and 0.1 μm thin tin plating is also applied to the entire female terminal 20. Then, thick tin plating is partially applied only to the lower surface 12b of the tab 12 of the male terminal 10. That is, a thin tin plating layer having a thickness of 0.1 μm is formed on the upper surface 12 a of the tab 12 of the male terminal 10, a thick tin plating layer is formed on the lower surface 12 b, and the bead 23 and the emboss 22 of the female terminal 20 have a thickness of 0.0. A 1 μm thin tin plating layer will be formed.
[0036]
In any of these aspects, the friction coefficient and the insertion force between the tab 12 of the male terminal 10 and the emboss 22 of the female terminal 20 are reduced, while the bead of the tab 12 of the male terminal 10 and the female terminal 20 is compared with that. The friction coefficient with 23 and the insertion force are increased by adhesion or biting. That is, the friction coefficient between the tab 12 and the bead 23 is large, and conversely, the friction coefficient between the tab 12 and the emboss 22 is small. Accordingly, the insertion force required for terminal connection can be reduced by the same insertion method as described above, and the contact portion between the male terminal 10 and the female terminal 20 becomes difficult to move after the insertion is completed, resulting in a slight sliding wear deterioration. Can be prevented.
[0037]
【The invention's effect】
As described above, according to the first aspect of the present invention, the friction coefficient between the fitting portion and the first sliding portion is increased, and conversely, the friction coefficient between the fitting portion and the second sliding portion is decreased. Therefore, during insertion, only the fitting part and the second sliding part are used to reduce the insertion force, but after the insertion is completed, the contact part moves between the fitting part and the first sliding part. It becomes difficult to prevent fine sliding wear deterioration.
[0038]
According to the invention of claim 2, since the fitting portion is a tab, the first sliding portion is a bead, and the second sliding portion is an emboss, more effectively reducing the insertion force, It is possible to prevent fine sliding wear deterioration.
[0040]
[Brief description of the drawings]
FIG. 1 is a side view of a fitting type connection terminal according to the present invention.
FIG. 2 is a plan view of a connection portion of the fitting type connection terminal of FIG. 1;
FIG. 3 is a diagram showing a correlation between a thickness of a tin plating layer formed on a male terminal and a female terminal and a terminal insertion force.
[Explanation of symbols]
10 Male terminal 12 Tab 12a Upper surface 12b Lower surface 20 Female terminal 21 Tongue piece 22 Emboss 23 Bead

Claims (2)

嵌合部を有する雄端子と第1摺動部および第2摺動部を有する雌端子とを接続し、挿入時には前記嵌合部を前記第2摺動部とのみ接触させ、挿入完了後に前記嵌合部を前記第1摺動部と前記第2摺動部との間に嵌合することによって電気的接触を得る嵌合型接続端子であって、
前記嵌合部と前記第1摺動部との摩擦係数を前記嵌合部と前記第2摺動部との摩擦係数よりも大きくすることを特徴とする嵌合型接続端子。
A male terminal having a fitting portion is connected to a female terminal having a first sliding portion and a second sliding portion, and the fitting portion is brought into contact only with the second sliding portion at the time of insertion, and after the insertion is completed, A fitting type connection terminal that obtains electrical contact by fitting a fitting portion between the first sliding portion and the second sliding portion,
A fitting type connection terminal, wherein a friction coefficient between the fitting portion and the first sliding portion is larger than a friction coefficient between the fitting portion and the second sliding portion.
請求項1記載の嵌合型接続端子において、
前記嵌合部はタブであり、
前記第1摺動部はビードであり、
前記第2摺動部はエンボスであることを特徴とする嵌合型接続端子。
In the fitting type connection terminal according to claim 1,
The fitting portion is a tab,
The first sliding part is a bead;
The fitting type connection terminal, wherein the second sliding portion is embossed.
JP2000011200A 2000-01-20 2000-01-20 Mating type connection terminal Expired - Fee Related JP3670544B2 (en)

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Application Number Priority Date Filing Date Title
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