JP4403256B2 - Crimping terminal crimping device and crimping die - Google Patents

Crimping terminal crimping device and crimping die Download PDF

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Publication number
JP4403256B2
JP4403256B2 JP2000372893A JP2000372893A JP4403256B2 JP 4403256 B2 JP4403256 B2 JP 4403256B2 JP 2000372893 A JP2000372893 A JP 2000372893A JP 2000372893 A JP2000372893 A JP 2000372893A JP 4403256 B2 JP4403256 B2 JP 4403256B2
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crimping
molding
piece
terminal
tip
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JP2002176715A (en
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好一 上石
隆一 小林
良一 真壁
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Hitachi Ltd
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Hitachi Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は電線の端部に圧着端子を圧着固定する圧着端子圧着装置及び圧着に使用する圧着金型に関する。
【0002】
【従来の技術】
従来電子機器等に使用されているコネクタの多くは、図14に示すようにハウジングa内に複数の圧着端子bが設けられた構造となっている。
【0003】
前記圧着端子bは図13に示すように、筒状の胴部cと、この胴部cの一端側に設けられたピン部d及び胴部cの他端側に設けられた圧着爪eより構成されていて、全体が導電性を有する金属により一体成形されており、胴部cの外周面には、軸線方向に一対の係止爪fがほぼハ字形に切起し形成されている。
【0004】
前記構成の圧着端子bは、圧着爪e側の端部が帯状体gにより鎖状に連設されていて、図12に示す圧着装置hを使用して、電線iの端部に圧着固定している。
【0005】
また従来の圧着装置hは、図示しないプレスにより上下駆動されるスライドjを有していて、このスライドjの下部に取付けられた上型kの圧着駒mと、上型kの下方に固定された下型nの間で圧着端子bの圧着爪eをカシメることにより、被覆の剥離された電線iの端部に圧着固定すると同時に、帯状部gより圧着端子bを切離すように構成されている。なおoは圧着端子bを水平に保持する受け台である。
【0006】
そして電線iの端部に圧着された圧着端子bをハウジングaの一端側よりハウジングa内へ圧入すると、胴部cより切起された係止爪fの先端が図14に示すようにハウジングa内の係止段部pに係合され、これによって電線iに引っ張り力Dが作用しても、ハウジングa内より圧着端子bが抜け外れないようになっている。
【0007】
【発明が解決しようとする課題】
しかし前記従来の圧着端子bでは、胴部cより切起された係止爪fの先端側が図14に示すようにほぼハ字形に開脚されているため、圧着作業の間や、圧着端子の圧着された電線iを次の組立て工程へ搬送している間に、係止爪fが異常に広げられたり、狭められたりすることがよくある。
【0008】
異常に広げられた係止爪fは、係止爪fが折損しない限り、元の角度に押し縮めてハウジングa内へ圧入することにより、ハウジングa内より圧着端子bが抜け外れることはないが、角度が狭められた係止爪fを気付かずにハウジングa内に圧入した場合、段部pに面ダレqなどがあると係止爪fの先端がハウジングaの段部pに係止されなくなり、その結果コネクタの使用中にハウジングa内より圧着端子bが抜け外れて使用不能になったり、システムなどに使用されているコネクタでは、システムが正常に動作しなくなるなどの問題がある。
【0009】
また圧着端子bをハウジングaに組込む際係止爪fの異常に気付いた場合は、作業者がヤットコなどの工具を使用して係止爪fを図13の仮想線で示すように補修しているが、補修作業に手間がかかるため、作業能率が悪いなどの問題もある。
【0010】
本発明はかかる従来の問題点を改善するためになされたもので、圧着端子を電線の端部に圧着する際、係止爪の先端を同時に成形する圧着端子圧着装置及び圧着金型を提供して、圧着端子がコネクタのハウジング内より抜け外れるのを未然に防止することを目的とするものである。
【0011】
【課題を解決するための手段】
前記目的を達成するため本発明の圧着端子圧着装置は、上下動自在な上型と、前記上型の下方に設置された下型の間で圧着端子の圧着爪をカシメることにより、前記圧着端子を電線の端部に圧着固定する圧着端子圧着装置であって、前記上型を構成する圧着駒の近傍に、前記圧着端子に突設された係止爪の先端を外側へ小円弧状に成形する成形駒を設けるとともに、前記下型の近傍に、前記圧着端子を下方より支持し、かつ前記係止爪の先端を成形する際、反力で前記係止爪が移動するのを阻止する受け面を備えた受け台を設けたものである。
【0012】
前記構成により、電線の端部に圧着された圧着端子をコネクタのハウジング内に圧入すると、ハウジング内の係止段部に圧着端子の係止爪の先端が確実に係止されるため、電線に引っ張り力が作用しても、ハウジング内より圧着端子が抜け外れることがなく、これによってコネクタが使用できなくなったり、システムが正常に動作しなくなるなどの問題を解消することができる。
【0013】
また圧着作業の工程中や、圧着端子の圧着された電線を次の組立て工程へ搬送している間に、係止爪が異常に広げられたり、狭められたり、係止段部に面ダレなどがあっても、係止爪の先端が予め小円弧状に成形されているため、係止爪の先端を確実にハウジング内の係止段部に係止することができると共に、工具などを使用して係止爪の先端を補修するなどの作業を必要としないので、組立て時の作業性も大変よい。
【0015】
また、前記構成により、係止爪を成形する際、成形時の反力により圧着端子が移動することがないので、係止爪の先端を所定の形状に正確に成形することができる。
【0016】
前記目的を達成するため本発明の圧着金型は、上下動自在な上型と、前記上型の下方に設置された下型との間で圧着端子の圧着爪をカシメることにより、前記圧着端子を電線の端部に圧着固定する圧着金型であって、前記上型を構成する圧着駒の近傍に、それぞれ誘い込み溝を有する一方の成形駒と他方の成形駒とを設け、前記一方の成形駒の先端部に、前記他方の成形駒とほぼ同じ肉厚となるように前記他方の成形駒と対向する面に段部を形成し、前記一方の成形駒と前記他方の成形駒とを重ねて、前記一方の成形駒と前記他方の成形駒の先端部間に隙間を形成し、前記一方の成形駒に、前記誘い込み溝の上部周縁に突設形成されていて、下部側の肉厚が薄く、上部側に従って順次肉厚が厚くなる成形部を設け、かつ、前記他方の成形駒に、前記誘い込み溝の周縁部をほぼ全辺に亘って角部を小円弧状に面取りすることにより形成される形成部を設け、前記一方の成形駒の成形部と前記他方の成形駒の成形部との間に、前記圧着端子に突設された係止爪の肉厚にほぼ等しい隙間を生じさせて、前記上型の下降とともに、前記係止爪の先端を小円弧状に成形するのである。
【0017】
前記構成により、圧着駒により圧着爪をカシメる際、同時に係止爪の先端を円弧状に成形することができ、これによって工程数が増すことがないため生産性が低下することもない。
【0018】
【発明の実施の形態】
本発明の実施の形態を図1ないし図11に示す図面を参照して詳述する。
【0019】
図1は圧着端子圧着装置を示すもので、ほぼC字形に形成された本体1の上部に、図示しないプレスなどにより上下駆動されるスライド2が設けられている。
【0020】
スライド2には圧着金型3の上型4が固着具9により着脱自在に取付けられており、上型4の下方には、本体1の基台1a上に下型5と受け台6が設置されていて、下型5と受け台6上に水平に圧着端子7を載置した状態で、スライド2により上型4を下降させることにより、被覆が剥離された電線8の端部に圧着端子7を圧着固定できるようになっている。
【0021】
圧着端子7は図2の(イ)及び(ロ)に示すように、筒状の胴部7aと、胴部7aの一端側に設けられたピン部7b及び胴部7aの他端側に形成された圧着爪7cより構成されていて、全体が導電性を有する金属により一体成形されている。
【0022】
また胴部7aの外周面には、一端側がピン部7b側で胴部7aに連設された一対の係止爪7dがほぼハ字形に切起し形成されていると共に、圧着爪7c側の端部は帯状部7eにより鎖状に連設されている。
【0023】
圧着端子7の圧着爪7cを下型5との間でカシメて電線8の端部に圧着端子7を圧着固定する上型4は、圧着駒4aと、2枚の成形駒4b,4cとよりなる。
【0024】
これら圧着駒4aと成形駒4b,4cはほぼ逆凸字形に形成されていて、圧着駒4aは下型5及び受け台6上に水平に載置された圧着端子7の圧着爪7c上方に位置するようスライド2に取付けられ、成形駒4b,4cは圧着端子7の係止爪7d上方に位置するようスライド2に取付けられている。
【0025】
圧着駒4a及び成形駒4b,4cの先端側には、ほぼ逆U字形の誘い込み溝4d,4e,4fが形成されていて、各誘い込み溝4d,4e,4fの先端側開放部は、先端側へ順次幅広となるテーパに形成されており、圧着駒4aのテーパ部4gにより圧着端子7の圧着爪7cをカシメるようになっている。
【0026】
成形駒4b,4cは図3に示すように、圧着駒4a側の成形駒4bがやや厚肉となっており、この成形駒4bの先端部は他方の成形駒4cとほぼ同じ肉厚となるよう成形駒4cと対向する面に段部4hが形成されている。
【0027】
これによって各成形駒4b,4cを重ねてスライド2に取付けた際、各成形駒4b,4cの先端部間に隙間4iが生じるようになっていると共に、成形駒4b,4cの対向面には図4及び図5に示すように成形部4j,4kが形成されている。
【0028】
成形駒4bの成形部4jは、誘い込み溝4eの上部周縁に突設形成されていて、下部側の肉厚が薄く、かつ上部側に行くに従って順次肉厚が厚くなっている。
【0029】
また成形駒4cの成形部4kは、誘い込み溝4fの周縁部をほぼ全辺に亘って角部を小円弧状に面取りすることにより形成されていて、スライド2が下死点に達したときに図10に示すように成形駒4bの成形部4jと成形駒4cの成形部4kの間に、係止爪7dの肉厚にほぼ等しい隙間4mが生じるようになっている。
【0030】
一方本体1の基台1aに設置された下型5は、圧着端子7の圧着爪7c部を下方より支持する平面部5aと、圧着駒4aとの間で帯状部7eより圧着端子7を切離す切断部5bとを有しており、下型5との間で圧着端子7を水平に保持する受け台6には、図6に示すように上面に圧着端子7のピン部7bが嵌合するV溝6aが形成されている。
【0031】
受け台6の奥側上面には、成形駒4b,4cにより係止爪7dを成形する際、その反力で圧着端子7が奥側へ移動するのを阻止する受け面6bが形成されていると共に、受け面6bの圧着端子7搬入側角部には、搬入された圧着端子7のピン部7b先端が受け面6bと干渉しないようテーパ面6cが形成されている。
【0032】
また本体1の基台1a上には、ワーク送り手段10が設置されていて、このワーク送り手段10により帯状部7eを間欠送りすることにより、帯状部7eに鎖状に連設された圧着端子7を圧着位置へ搬入できるようになっている。
【0033】
次に前記構成された圧着端子圧着装置の作用を説明すると、圧着端子7は予め帯状部7eにより一定の間隔で鎖状に連接された状態で、図1に示す圧着端子圧着装置の左側より本体1内に搬入され、ワーク送り手段10によって圧着位置へ間欠送りされる。
【0034】
圧着端子7の1個が圧着位置に搬送されたら、作業者は端部の被覆が予め剥離された電線8の端部を図1に示すように圧着端子7の各圧着爪7cの間に挿入し、この状態でプレスの運転スイッチ(図示せず)を操作すると、プレスにより本体1上部のスライド2が下降され、スライド2の下部に取付けられた上型3の圧着駒4aと下型5の間で圧着爪7cがカシメられて、圧着端子7が電線8の端部に圧着固定される。
【0035】
また前記圧着動作中に、圧着駒4aの後側に併設された成形駒4b、4cにより圧着端子7の係止爪7dが次のように成形される。
【0036】
すなわち成形駒4b、4cが圧着駒4aとともに下降されて、各成形駒4b、4cが圧着端子7に対して図7のA−A線で示す断面位置に達すると、図9に示すように一方の成形駒4bに突設された成形部4jが係止爪7dの内側に当接され、また他方の成形駒4cに形成された成形部4kが係止爪7dの外側に当接される。
【0037】
そしてこの状態でさらに成形駒4b、4cが下降されて、圧着端子7に対して図7のB−B線に示す断面位置に達すると、成形駒4bの成形部4jの高さが増すに従い、図10に示すように成形駒4bの成形部4jにより係止爪7dの先端が成形駒4cの成形部4kに圧接されるため、係止爪7dの先端が成形駒4cの成形部4kの形状に沿って外側へ小円弧状に成形される。
【0038】
またこの時の成形反力により圧着端子7は成形駒4c方向へ移動しようとするが、圧着端子7の先端は受け台6の受け面6bに当接されていて移動が阻止されているため、成形駒4bの成形部4jと、成形駒4cの成形部4kの間で係止爪7dの先端が所定の形状に正確に成形されるようになる。
【0039】
上型4が下死点に達して圧着爪7cと係止爪7dの成形が完了し、圧着駒4aと下型5の切断部5bの間で帯状部7eより圧着端子7が切離されると、スライド2とともに上型4が上昇を開始すると共に、上型4が上死点に達するまでの間に送り手段10によって次の圧着端子7が圧着位置へ搬送されるので、以下前記動作を繰り返すことにより、電線8の端部に次々と圧着端子7を圧着固定することができるようになる。
【0040】
また電線8に圧着された圧着端子7は、係止爪7dの先端が外側に小円弧状に成形されているため、図11に示すようにコネクタのハウジング12内に圧入した際、係止爪7dの先端が確実にハウジング12内の係止段部12aに係止され、これによって電線8に引っ張り力Cが作用しても、ハウジング12内より圧着端子7が抜け外れることがないと共に、係止段部12aの角部に面ダレ12bがあっても、係止爪7dの先端を確実に係止段部12aに係止することができるようになる。
【0041】
なお本体1に対してスライド2及び上型4を簡単に取り外すことができるので、圧着端子7やコネクタの種類に応じて圧着駒4a及び成形駒4b、4cを選択することにより、最適な形状に係止爪7dの先端を成形することができるようになる。
【0042】
【発明の効果】
本発明は以上詳述したように、圧着駒により圧着端子の圧着爪をカシメて圧着端子を電線の端部に圧着固定する際、圧着端子に突設された係止爪の先端を成形駒により外側へ小円弧状に成形するようにしたことから、電線の端部に圧着された圧着端子をコネクタのハウジング内に圧入すると、ハウジング内の係止段部に圧着端子の係止爪の先端が確実に係止されるため、電線に引っ張り力が作用しても、ハウジング内より圧着端子が抜け外れることがなく、これによってコネクタが使用できなくなったり、システムが正常に動作しなくなるなどの問題を解消することができる。
【0043】
また圧着作業の工程中や、圧着端子の圧着された電線を次の組立て工程へ搬送している間に、係止爪が異常に広げられたり、狭められたり、係止段部に面ダレなどがあっても、係止爪の先端が予め小円弧状に成形されているため、係止爪の先端を確実にハウジング内の係止段部に係止することができると共に、工具などを使用して係止爪の先端を補修するなどの作業を必要としないので、組立て時の作業性も大変よい。
【0044】
さらに下型の近傍に、圧着端子を下方より支持し、かつ係止爪の先端を成形する際、係止爪が移動するのを阻止する受け台を設けたことから、係止爪を成形する際、成形時の反力により圧着端子が移動することないので、係止爪の先端を所定の形状に正確に成形することができると共に、係止爪の先端を成形する上型を、係止爪の先端に内側より当接する成形部と、係止爪の先端に外側より当接する成形部を有し、かつ上型の下降とともに、各成形部の間で係止爪の先端を小円弧状に成形する成形駒により構成したことから、圧着駒により圧着爪をカシメる際、同時に係止爪の先端を円弧状に成形することができ、これによって工程数が増すことがないため生産性が低下することもない。
【図面の簡単な説明】
【図1】本発明の実施の形態になる圧着端子圧着装置の全体的な斜視図である。
【図2】(イ)は本発明の実施の形態になる圧着端子圧着装置で圧着する圧着端子の平面図である。
(ロ)は本発明の実施の形態になる圧着端子圧着装置で圧着する圧着端子の側面図である。
【図3】本発明の実施の形態になる圧着端子圧着装置で使用する圧着金型の斜視図である。
【図4】本発明の実施の形態になる圧着端子圧着装置に使用する成形駒の斜視図である。
【図5】本発明の実施の形態になる圧着端子圧着装置に使用する成形駒の斜視図である。
【図6】本発明の実施の形態になる圧着端子圧着装置に使用する受け台の斜視図である。
【図7】本発明の実施の形態になる圧着端子圧着装置に使用する成形駒の作用説明図である。
【図8】本発明の実施の形態になる圧着端子圧着装置に使用する成形駒の作用説明図である。
【図9】図7のA−A線に沿う断面図である。
【図10】図7のB−B線に沿う断面図である。
【図11】本発明の実施の形態になる圧着端子圧着装置により電線に圧着された圧着端子をコネクタのハウジング内に挿入した状態の断面図である。
【図12】従来の圧着端子圧着装置を示す斜視図である。
【図13】従来の圧着端子を示す斜視図である。
【図14】従来の圧着端子を使用したコネクタを示す断面図である。
【符号の説明】
4 上型
4a 圧着駒
4b 成形駒
4c 成形駒
4j 成形部
4k 成形部
5 下型
6 受け台
7 圧着端子
7c 圧着爪
7d 係止爪
8 電線
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a crimping terminal crimping apparatus that crimps and fixes a crimping terminal to an end of an electric wire, and a crimping die used for crimping.
[0002]
[Prior art]
Many connectors conventionally used in electronic devices have a structure in which a plurality of crimp terminals b are provided in a housing a as shown in FIG.
[0003]
As shown in FIG. 13, the crimp terminal b includes a cylindrical body portion c, a pin portion d provided on one end side of the body portion c, and a crimp claw e provided on the other end side of the body portion c. The whole is integrally formed of a conductive metal, and a pair of locking claws f are formed in the axial direction on the outer peripheral surface of the body portion c so as to be cut and raised in a substantially C shape.
[0004]
The crimping terminal b having the above-described configuration has the end portion on the crimping claw e side continuously connected in a chain shape by a band-like body g, and is crimped and fixed to the end portion of the electric wire i using the crimping device h shown in FIG. ing.
[0005]
Further, the conventional crimping apparatus h has a slide j that is driven up and down by a press (not shown), and is fixed to a crimping piece m of an upper mold k attached to the lower part of the slide j and below the upper mold k. By crimping the crimping claw e of the crimping terminal b between the lower molds n, the crimping terminal b is separated from the band-shaped part g at the same time as being crimped and fixed to the end part of the stripped electric wire i. ing. Note that o is a cradle for holding the crimp terminal b horizontally.
[0006]
Then, when the crimp terminal b crimped to the end of the electric wire i is press-fitted into the housing a from one end of the housing a, the tip of the locking claw f cut and raised from the body c is the housing a as shown in FIG. Even if a pulling force D is applied to the electric wire i by being engaged with the inner locking step portion p, the crimp terminal b is prevented from coming out of the housing a.
[0007]
[Problems to be solved by the invention]
However, in the conventional crimp terminal b, since the front end side of the locking claw f cut and raised from the body c is opened in a substantially C shape as shown in FIG. While the crimped electric wire i is conveyed to the next assembly process, the locking claw f is often abnormally widened or narrowed.
[0008]
As long as the locking claw f that has been abnormally widened does not break, the crimping terminal b does not come out of the housing a by being compressed and compressed into the housing a. When the locking claw f whose angle is narrowed is press-fitted into the housing a without noticing it, the tip of the locking claw f is locked to the step portion p of the housing a if there is a surface sag q on the step portion p. As a result, there is a problem that the crimp terminal b comes out of the housing a during use of the connector and becomes unusable, or the connector used in the system does not operate normally.
[0009]
Further, when the abnormality of the locking claw f is noticed when the crimp terminal b is assembled into the housing a, the operator repairs the locking claw f as shown by the phantom line in FIG. However, there are problems such as poor work efficiency due to the time and labor required for repair work.
[0010]
The present invention has been made to improve such conventional problems, and provides a crimping terminal crimping apparatus and a crimping die for simultaneously molding the tip of a locking claw when crimping a crimping terminal to the end of an electric wire. Thus, it is intended to prevent the crimp terminal from coming out of the housing of the connector.
[0011]
[Means for Solving the Problems]
Crimp terminal crimping apparatus of the present invention for achieving the above object, the upper mold freely moves up and down, by caulking the crimping claws crimp terminal between the installed lower mold below the upper mold, the the crimping terminal a crimp terminal crimping apparatus for crimping fixed to the end portion of the wire, in the vicinity of the crimping frame constituting the upper die, the tip of the locking claw projecting from the said crimp terminal to the outside in a small arc shape blocking Rutotomoni provided a shaped piece of molding in the vicinity of the lower die, the crimp terminal supports from below, and when forming the tip of the locking claw, from the locking pawl by the reaction force moves A cradle with a receiving surface is provided .
[0012]
With the above configuration, when the crimp terminal crimped to the end of the wire is press-fitted into the housing of the connector, the tip of the latching claw of the crimp terminal is securely locked to the locking step in the housing. Even if a pulling force is applied, the crimp terminal does not come off from the inside of the housing, which can solve the problem that the connector cannot be used or the system does not operate normally.
[0013]
Also, during the crimping process or while the crimped terminal's crimped wire is being transported to the next assembly process, the locking claws are abnormally widened or narrowed, and the locking step part is sagted. Even if there is, the tip of the locking claw is pre-shaped in a small arc shape, so that the tip of the locking claw can be securely locked to the locking step in the housing and a tool can be used Thus, work such as repairing the tip of the locking claw is not required, so workability during assembly is also very good.
[0015]
Further, with the above configuration, when the locking claw is formed, the crimp terminal does not move due to the reaction force at the time of forming, so that the tip of the locking claw can be accurately formed into a predetermined shape.
[0016]
Crimping die of the present invention for achieving the above object, the upper mold freely moves up and down, by caulking the crimping claws crimp terminal between the installed lower mold below the upper mold, the compression A crimping die for crimping and fixing a terminal to an end of an electric wire, wherein one molding piece having a guide groove and the other molding piece are provided in the vicinity of the crimping piece constituting the upper mold, and the one molding A stepped portion is formed on the surface of the piece facing the other molding piece so as to have the same thickness as the other molding piece, and the one molding piece and the other molding piece are overlapped. , A gap is formed between the one molding piece and the tip of the other molding piece, and the one molding piece is formed to protrude from the upper peripheral edge of the guiding groove, and the lower side wall thickness is thin, Provide a molding part that gradually increases in thickness according to the upper side, and on the other molding piece A forming portion formed by chamfering a corner portion in a small arc shape over the entire periphery of the guiding groove is provided between the forming portion of the one forming piece and the forming portion of the other forming piece. in the crimped produce roughly equal gap thickness of projecting from the locking claw to the terminal, along with lowering of the upper die is of also forming the leading end of the locking claw to the small circular arc shape.
[0017]
With the above configuration, when the crimping claw is caulked by the crimping piece, the tip of the locking claw can be formed into an arc shape at the same time, and this does not increase the number of processes, so that productivity does not decrease.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described in detail with reference to the drawings shown in FIGS.
[0019]
FIG. 1 shows a crimp terminal crimping apparatus, and a slide 2 that is driven up and down by a press (not shown) or the like is provided on an upper portion of a main body 1 formed in a substantially C shape.
[0020]
An upper die 4 of the crimping die 3 is detachably attached to the slide 2 by a fixing tool 9. A lower die 5 and a cradle 6 are installed on the base 1 a of the main body 1 below the upper die 4. In the state where the crimp terminal 7 is horizontally placed on the lower mold 5 and the cradle 6, the upper mold 4 is lowered by the slide 2, so that the crimp terminal is attached to the end portion of the electric wire 8 from which the coating has been peeled off. 7 can be fixed by pressure bonding.
[0021]
Crimp terminal 7 as shown in FIG. 2 (a) and (b), formed on the other end side of the cylindrical body portion 7a and a pin provided on one end side of the trunk portion 7a portion 7b and the trunk 7a It is comprised from the crimping | compression-bonding claw 7c made, and the whole is integrally molded with the metal which has electroconductivity.
[0022]
In addition, a pair of locking claws 7d, one end of which is connected to the barrel 7a on the pin 7b side, are formed in a substantially C shape on the outer peripheral surface of the barrel 7a. The end portions are connected in a chain form by a belt-like portion 7e.
[0023]
The upper mold 4 for crimping and fixing the crimping terminal 7 to the end of the electric wire 8 by crimping the crimping claw 7c of the crimping terminal 7 with the lower mold 5 includes a crimping piece 4a and two molding pieces 4b and 4c. Become.
[0024]
The crimping piece 4a and the molding pieces 4b and 4c are formed in a substantially inverted convex shape, and the crimping piece 4a is positioned above the crimping claw 7c of the crimping terminal 7 placed horizontally on the lower mold 5 and the cradle 6. The molding pieces 4 b and 4 c are attached to the slide 2 so as to be positioned above the locking claws 7 d of the crimp terminal 7.
[0025]
Inverted U-shaped guiding grooves 4d, 4e, and 4f are formed on the distal end sides of the crimping piece 4a and the molding pieces 4b and 4c, and the distal-side open portions of the respective guiding grooves 4d, 4e, and 4f are on the distal side. The crimping claw 7c of the crimping terminal 7 is caulked by the taper portion 4g of the crimping piece 4a.
[0026]
As shown in FIG. 3, the molding pieces 4b and 4c are slightly thicker on the molding piece 4b on the crimping piece 4a side, and the tip of the molding piece 4b has substantially the same thickness as the other molding piece 4c. A step 4h is formed on the surface facing the molding piece 4c.
[0027]
As a result, when the molding pieces 4b and 4c are overlapped and attached to the slide 2, a gap 4i is formed between the tips of the molding pieces 4b and 4c, and the opposing surfaces of the molding pieces 4b and 4c As shown in FIGS. 4 and 5, molded portions 4 j and 4 k are formed.
[0028]
Molding portion 4j of the molded piece 4b is guiding have been projected formed on the upper rim of the groove 4e, thin wall thickness of the lower side, and sequentially thickness toward the upper side is thicker.
[0029]
Further, the molding portion 4k of the molding piece 4c is formed by chamfering the corner portion in a small arc shape over the entire periphery of the guiding groove 4f, and when the slide 2 reaches the bottom dead center. As shown in FIG. 10, a gap 4m substantially equal to the thickness of the locking claw 7d is formed between the molding portion 4j of the molding piece 4b and the molding portion 4k of the molding piece 4c.
[0030]
On the other hand, the lower mold 5 installed on the base 1a of the main body 1 cuts the crimping terminal 7 from the belt-like part 7e between the flat part 5a that supports the crimping claw 7c part of the crimping terminal 7 from below and the crimping piece 4a. As shown in FIG. 6, the pin portion 7 b of the crimp terminal 7 is fitted on the upper surface of the cradle 6 that has a cutting portion 5 b to be separated and holds the crimp terminal 7 horizontally with the lower die 5. A V-groove 6a is formed.
[0031]
On the back side upper surface of the cradle 6, a receiving surface 6 b that prevents the crimping terminal 7 from moving to the back side due to the reaction force when the locking claw 7 d is formed by the molding pieces 4 b and 4 c is formed. At the same time, a tapered surface 6c is formed at the corner of the receiving surface 6b where the crimping terminal 7 is carried in so that the tip of the pin portion 7b of the carried-in crimping terminal 7 does not interfere with the receiving surface 6b.
[0032]
Further, a workpiece feeding means 10 is installed on the base 1a of the main body 1, and the strip-like portion 7e is intermittently fed by the workpiece feeding means 10, so that the crimp terminal is connected to the belt-like portion 7e in a chain shape. 7 can be carried into the crimping position.
[0033]
Next, the operation of the crimping terminal crimping apparatus constructed as described above will be explained. The crimping terminal 7 is connected to the main body from the left side of the crimping terminal crimping apparatus shown in FIG. 1 and is intermittently fed to the crimping position by the work feeding means 10.
[0034]
When one of the crimp terminals 7 is conveyed to the crimp position, the operator inserts the end portion of the electric wire 8 from which the coating of the end portion has been peeled off between the crimp claws 7c of the crimp terminal 7 as shown in FIG. In this state, when the operation switch (not shown) of the press is operated, the slide 2 on the upper part of the main body 1 is lowered by the press, and the crimping piece 4a of the upper mold 3 and the lower mold 5 attached to the lower part of the slide 2 are moved. The crimping claw 7c is crimped between them, and the crimping terminal 7 is crimped and fixed to the end of the electric wire 8.
[0035]
During the crimping operation, the locking claws 7d of the crimp terminal 7 are molded as follows by the molding pieces 4b and 4c provided on the rear side of the crimping piece 4a.
[0036]
That is, when the molding pieces 4b and 4c are lowered together with the crimping piece 4a and each molding piece 4b and 4c reaches the cross-sectional position indicated by the line AA in FIG. The molding part 4j protruding from the molding piece 4b is in contact with the inside of the locking claw 7d, and the molding part 4k formed in the other molding piece 4c is in contact with the outside of the locking claw 7d.
[0037]
In this state, when the molding pieces 4b and 4c are further lowered and reach the cross-sectional position indicated by the line BB in FIG. 7 with respect to the crimp terminal 7, as the height of the molding portion 4j of the molding piece 4b increases, As shown in FIG. 10, since the tip of the locking claw 7d is pressed against the molding part 4k of the molding piece 4c by the molding part 4j of the molding piece 4b, the tip of the locking claw 7d is the shape of the molding part 4k of the molding piece 4c. Is formed in a small arc shape outward.
[0038]
Further, the crimping terminal 7 tries to move in the direction of the molding piece 4c due to the molding reaction force at this time, but the tip of the crimping terminal 7 is in contact with the receiving surface 6b of the cradle 6 and is prevented from moving. The tip of the locking claw 7d is accurately formed into a predetermined shape between the forming portion 4j of the forming piece 4b and the forming portion 4k of the forming piece 4c.
[0039]
When the upper die 4 reaches the bottom dead center, the formation of the crimping claw 7c and the locking claw 7d is completed, and the crimping terminal 7 is separated from the belt-like portion 7e between the crimping piece 4a and the cutting portion 5b of the lower die 5. The upper die 4 starts to rise together with the slide 2 and the next crimping terminal 7 is conveyed to the crimping position by the feeding means 10 until the upper die 4 reaches the top dead center. Accordingly, the crimp terminals 7 can be crimped and fixed to the end portions of the electric wires 8 one after another.
[0040]
Further, the crimping terminal 7 crimped to the electric wire 8 has a locking claw 7d with the tip of the locking claw 7d formed on the outside in a small arc shape. Therefore, when the crimping terminal 7 is press-fitted into the connector housing 12 as shown in FIG. 7d is securely locked to the locking step portion 12a in the housing 12, so that even if a tensile force C is applied to the electric wire 8, the crimp terminal 7 does not come out of the housing 12 and Even if there is a surface sag 12b at the corner of the stop portion 12a, the tip of the locking claw 7d can be reliably locked to the locking step portion 12a.
[0041]
In addition, since the slide 2 and the upper mold 4 can be easily removed from the main body 1, by selecting the crimping piece 4a and the molding pieces 4b and 4c according to the type of the crimping terminal 7 and the connector, the optimum shape can be obtained. The tip of the locking claw 7d can be molded.
[0042]
【The invention's effect】
As described in detail above, when the crimping claw of the crimping terminal is crimped by the crimping piece and the crimping terminal is crimped and fixed to the end of the electric wire, the tip of the locking claw protruding from the crimping terminal is formed by the molding piece. Since the outer side is molded in a small arc shape, when the crimping terminal crimped to the end of the wire is press-fitted into the housing of the connector, the tip of the locking tab of the crimping terminal is inserted into the locking step in the housing. Because it is securely locked, even if a pulling force acts on the wire, the crimp terminal does not come out of the housing, which can cause problems such as the connector becoming unusable and the system not operating properly. Can be resolved.
[0043]
Also, during the crimping process or while the crimped terminal's crimped wire is being transported to the next assembly process, the locking claws are abnormally widened or narrowed, and the locking step part is sagted. Even if there is, the tip of the locking claw is pre-shaped in a small arc shape, so that the tip of the locking claw can be securely locked to the locking step in the housing and a tool can be used Thus, work such as repairing the tip of the locking claw is not required, so workability during assembly is also very good.
[0044]
In addition, a locking claw is formed in the vicinity of the lower mold, since a cradle is provided that supports the crimp terminal from below and prevents the locking claw from moving when the tip of the locking claw is molded. At this time, since the crimp terminal does not move due to the reaction force at the time of molding, the tip of the locking claw can be accurately molded into a predetermined shape, and the upper mold for molding the tip of the locking claw can be locked. It has a molded part that contacts the tip of the claw from the inside and a molded part that contacts the tip of the claw from the outside, and as the upper die descends, the tip of the locking claw is a small arc shape between each molded part When the crimping claw is crimped by the crimping piece, the tip of the latching claw can be formed into an arc shape at the same time. There is no decline.
[Brief description of the drawings]
FIG. 1 is an overall perspective view of a crimp terminal crimping apparatus according to an embodiment of the present invention.
FIG. 2A is a plan view of a crimp terminal to be crimped by a crimp terminal crimping apparatus according to an embodiment of the present invention.
(B) is a side view of a crimp terminal to be crimped by a crimp terminal crimping apparatus according to an embodiment of the present invention.
FIG. 3 is a perspective view of a crimping die used in the crimp terminal crimping apparatus according to the embodiment of the present invention.
FIG. 4 is a perspective view of a molding piece used in the crimp terminal crimping apparatus according to the embodiment of the present invention.
FIG. 5 is a perspective view of a molding piece used in the crimp terminal crimping apparatus according to the embodiment of the present invention.
FIG. 6 is a perspective view of a cradle used in the crimp terminal crimping apparatus according to the embodiment of the present invention.
FIG. 7 is an operation explanatory view of a molding piece used in the crimp terminal crimping apparatus according to the embodiment of the present invention.
FIG. 8 is an operation explanatory view of a molding piece used in the crimp terminal crimping apparatus according to the embodiment of the present invention.
9 is a cross-sectional view taken along line AA in FIG.
10 is a cross-sectional view taken along line BB in FIG.
FIG. 11 is a cross-sectional view of a state where a crimp terminal crimped to an electric wire by a crimp terminal crimping apparatus according to an embodiment of the present invention is inserted into a connector housing.
FIG. 12 is a perspective view showing a conventional crimp terminal crimping apparatus.
FIG. 13 is a perspective view showing a conventional crimp terminal.
FIG. 14 is a cross-sectional view showing a connector using a conventional crimp terminal.
[Explanation of symbols]
4 Upper mold 4a Crimping piece 4b Molding piece 4c Molding piece 4j Molding part 4k Molding part 5 Lower mold 6 Base 7 Crimping terminal 7c Crimping claw 7d Locking claw 8 Electric wire

Claims (2)

上下動自在な上型と、前記上型の下方に設置された下型との間で圧着端子の圧着爪をカシメることにより、前記圧着端子を電線の端部に圧着固定する圧着端子圧着装置であって、前記上型を構成する圧着駒の近傍に、前記圧着端子に突設された係止爪の先端を外側へ小円弧状に成形する成形駒を設けるとともに、前記下型の近傍に、前記圧着端子を下方より支持し、かつ前記係止爪の先端を成形する際、反力で前記係止爪が移動するのを阻止する受け面を備えた受け台を設けたことを特徴とする圧着端子圧着装置。A crimping terminal crimping device that crimps and fixes the crimping terminal to the end of the electric wire by crimping a crimping claw of the crimping terminal between an upper mold that can move up and down and a lower mold that is installed below the upper mold. a in the vicinity of the crimping frame constituting the upper die, the tip of the projecting from the crimp terminal locking claw Rutotomoni provided a shaped piece for molding a small arc shape outward in the vicinity of the lower die And a cradle provided with a receiving surface that supports the crimp terminal from below and prevents the locking claw from moving by a reaction force when the tip of the locking claw is formed . A crimping terminal crimping device. 上下動自在な上型と、前記上型の下方に設置された下型との間で圧着端子の圧着爪をカシメることにより、前記圧着端子を電線の端部に圧着固定する圧着金型であって、前記上型を構成する圧着駒の近傍に、それぞれ誘い込み溝を有する一方の成形駒と他方の成形駒とを設け、前記一方の成形駒の先端部に、前記他方の成形駒とほぼ同じ肉厚となるように前記他方の成形駒と対向する面に段部を形成し、前記一方の成形駒と前記他方の成形駒とを重ねて、前記一方の成形駒と前記他方の成形駒の先端部間に隙間を形成し、前記一方の成形駒に、前記誘い込み溝の上部周縁に突設形成されていて、下部側の肉厚が薄く、上部側に行くに従って順次肉厚が厚くなる成形部を設け、かつ、前記他方の成形駒に、前記誘い込み溝の周縁部をほぼ全辺に亘って角部を小円弧状に面取りすることにより形成される形成部を設け、前記一方の成形駒の成形部と前記他方の成形駒の成形部との間に、前記圧着端子に突設された係止爪の肉厚にほぼ等しい隙間を生じさせて、前記上型の下降とともに、記係止爪の先端を小円弧状に成形するとを特徴とする圧着金型。A crimping die that crimps and fixes the crimping terminal to the end of the electric wire by caulking the crimping claw of the crimping terminal between an upper mold that can move up and down and a lower mold that is installed below the upper mold. In the vicinity of the crimping piece constituting the upper mold, one molding piece and the other molding piece each having a guide groove are provided, and the same thickness as the other molding piece is provided at the tip of the one molding piece. A stepped portion is formed on the surface facing the other molding piece so as to be thick, the one molding piece and the other molding piece are overlapped, and the one molding piece and the tip of the other molding piece A gap is formed in between, and the one molding piece is formed to protrude from the upper peripheral edge of the guide groove, and the molding portion is formed such that the thickness on the lower side is thin and the thickness is gradually increased toward the upper side. And the other molding piece has a peripheral edge of the guiding groove almost on the entire side. A forming portion formed by chamfering the corner portion into a small arc shape is provided, and a member protruding from the crimp terminal is formed between the forming portion of the one forming piece and the forming portion of the other forming piece. and to produce roughly equal gap thickness of the claws, together with lowering of the upper die, before crimping die, characterized that you molding the tip of Kigakari claws into small circular arc shape.
JP2000372893A 2000-12-07 2000-12-07 Crimping terminal crimping device and crimping die Expired - Fee Related JP4403256B2 (en)

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CN112845955B (en) * 2020-12-31 2022-05-03 南京航空航天大学 Semi-rigid radio frequency coaxial cable three-dimensional forming equipment and working method thereof
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