JP6504740B2 - Connection structure of crimped terminal to electric wire - Google Patents

Connection structure of crimped terminal to electric wire Download PDF

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JP6504740B2
JP6504740B2 JP2013174829A JP2013174829A JP6504740B2 JP 6504740 B2 JP6504740 B2 JP 6504740B2 JP 2013174829 A JP2013174829 A JP 2013174829A JP 2013174829 A JP2013174829 A JP 2013174829A JP 6504740 B2 JP6504740 B2 JP 6504740B2
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wire
conductor
water blocking
blocking sheet
electric wire
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JP2015043296A (en
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泰史 青木
泰史 青木
大▲高▼ 一人
一人 大▲高▼
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Yazaki Corp
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Priority to CN201480043184.8A priority patent/CN105453342B/en
Priority to DE112014003899.7T priority patent/DE112014003899T5/en
Priority to PCT/JP2014/072852 priority patent/WO2015030222A1/en
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Priority to US15/007,424 priority patent/US9640877B2/en
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本発明は、止水性を備えた、圧着端子の電線に対する接続構造に関するものである。   The present invention relates to a connection structure of a crimp terminal to an electric wire provided with water blocking property.

図7〜図9に、特許文献1に記載された、従来の圧着端子の電線に対する接続構造の一例を示す。なお、図中の方向については、端子の長手方向(電線の長手方向と一致)の一方側である相手側端子に向かう向きを前方、その反対方向を後方、圧着端子に対して電線を載せる側を上方、その反対方向を下方、前方に向かって端子の幅方向の一方側及び他方側を左側及び右側とする。   FIGS. 7-9 shows an example of the connection structure with respect to the electric wire of the conventional crimp terminal described in patent document 1. FIG. With regard to the direction in the figure, the direction toward the mating terminal that is one side of the longitudinal direction of the terminal (coincident with the longitudinal direction of the wire) is forward, the opposite direction is backward, and the wire is mounted on the crimp terminal The upper side, the opposite direction is the lower side, and one side and the other side of the width direction of the terminal toward the front are the left side and the right side.

図7に示すように、圧着端子110は、前部に、相手側オス端子に対して接続するためのバネ片112を備えたボックス部(電気接続部)を有し、その後部に、電線Wの端末部に対して圧着される電線接続部120を有している。電線接続部120は、前側の位置に、電線Wの端末部の被覆Wbが除去されて導体Waが露出した導体露出部Wapに圧着される導体圧着部121を有し、その後側の位置に、電線Wの端末部に残された被覆Wbの付いた部分に圧着される被覆圧着部122を有している。   As shown in FIG. 7, the crimp terminal 110 has a box portion (electrical connection portion) provided with a spring piece 112 at the front portion for connection to the mating male terminal, and a wire W at the rear portion. The wire connection part 120 crimped | bonded with respect to the terminal part of this. The wire connection portion 120 has a conductor crimping portion 121 crimped to the exposed conductor portion Wap where the coating Wb of the end portion of the wire W is removed to expose the conductor Wa at the front position, and at the rear position It has the covering crimp part 122 crimped | bonded to the part with the coating | coated Wb left at the terminal part of the electric wire W.

導体圧着部121及び被覆圧着部122は、共通の底板部125と、該共通の底板部125の左右両側縁から上方に立設し、且つ接続すべき電線Wの導体露出部Wap及び被覆Wbの付いた部分を包み込むように内側に曲げられることで導体露出部Wap及び被覆Wbの付いた部分を底板部125の上面に密着した状態で加締める左右一対の共通の加締片126、127と、を有する。電線接続部120は、導体圧着部121の前端から被覆圧着部122の後端まで連続して有する断面U字状に形成されている。また、電線接続部120は、電線Wの端末部に圧着された状態で、導体露出部Wapの前端Wap1よりも前方側から、被覆Wbの付いた部分の前端Wb1よりも後方側までを、連続して一体的に覆うような長さに構成されている。   The conductor crimped portion 121 and the sheath crimped portion 122 are provided on the common bottom plate portion 125 and the conductor exposed portion Wap and the sheath Wb of the electric wire W to be erected upward from the left and right side edges of the common bottom plate portion 125. A pair of left and right common caulking pieces 126 and 127 which are caulked in a state in which the conductor attached portion Wap and the portion attached with the cover Wb are in close contact with the upper surface of the bottom plate portion 125 by being bent inwards so as to wrap the attached portion. Have. The wire connection portion 120 is formed to have a U-shaped cross section which is continuous from the front end of the conductor crimping portion 121 to the rear end of the sheath crimping portion 122. Further, the wire connection portion 120 is continuous from the front side with respect to the front end Wap1 of the conductor exposed portion Wap to the rear side with respect to the front end Wb1 of the portion with the coating Wb in a state of being crimped to the end portion of the electric wire W It is configured to be integrally covered.

そして、圧着端子110の電線Wに対する接続構造は、図7に示すように、電線接続部120の内面に枠状に止水シート130を配置した状態で、電線接続部120の上に電線Wの端末部の導体露出部Wapが配置される。その上で図8に示すように、左右一対の加締片126、127を内側に丸めて加締める。更に、電線接続部120の前端にできる開口128を、図9に示すように電線接続部120の前端を潰して塞ぐことにより構成されている。   And the connection structure to the electric wire W of the crimp terminal 110 is a state which arrange | positioned the water blocking sheet 130 in frame shape on the inner surface of the electric wire connection part 120, as shown in FIG. The conductor exposed portion Wap of the terminal portion is disposed. Then, as shown in FIG. 8, a pair of left and right caulking pieces 126, 127 are rolled inward and caulked. Furthermore, as shown in FIG. 9, the opening 128 formed at the front end of the wire connection portion 120 is configured by crushing and closing the front end of the wire connection portion 120.

特開2013−80682号公報JP, 2013-80682, A

ところで、特許文献1に記載された従来の圧着端子の電線に対する接続構造では、電線接続部120を電線Wの端末部に圧着した後の状態で、電線接続部120の外から止水シート130の有無や組み付け状態を確認できないため、止水性能を保証するための判断が難しいという課題があった。   By the way, in the connection structure to the electric wire of the conventional crimp terminal described in patent document 1, in the state after pressure bonding the electric wire connection part 120 to the terminal part of the electric wire W, Since the presence or absence and the attachment state can not be confirmed, there is a problem that it is difficult to make a judgment to guarantee the water blocking performance.

本発明は、上述した事情に鑑みてなされたものであり、その目的は、圧着後の状態において、止水性能を確かに発揮できる状態になっているかどうかを外から見て容易に確認できるようにした圧着端子の電線に対する接続構造を提供することにある。   The present invention has been made in view of the above-described circumstances, and the purpose thereof is to easily confirm from the outside whether or not it is in a state in which the waterproof performance can surely be exhibited in the state after pressure bonding It is an object of the present invention to provide a connection structure of the crimped terminal to the electric wire.

前述した目的を達成するために、本発明に係る圧着端子の電線に対する接続構造は、下記(1)〜()を特徴としている。
(1) 導体と、前記導体を覆う被覆と、を有する電線と、
相手側端子に電気的に接続されるための電気接続部が前部に形成され、前記電線の端末部に圧着される電線接続部が後部に形成された圧着端子と、
を備え、
前記電線接続部は、前記電線の端末部の被覆が除去されて導体が露出した導体露出部に圧着される導体圧着部と、前記電線の端末部に残された被覆の一部に圧着される被覆圧着部と、を有し、前記導体圧着部が前側に、前記被覆圧着部が後側に形成され、該導体圧着部の前端から該被覆圧着部の後端まで連続する断面U字状に形成され、
前記電線の端末部に圧着された状態の前記電線接続部が、前記導体露出部の前端よりも前方側から前記被覆の一部の前端よりも後方側までを覆う、
前記圧着端子の前記電線に対する接続構造であって、
前記電線接続部の内面に配置された、前記導体露出部に対応する位置に開口部を有する止水シートをさらに備え、
記電線接続部には、該電線接続部の外部から内部に位置する前記止水シートを視認するための確認窓が設けられ、
前記止水シートは、該止水シートの前端が前記導体露出部の前端よりも前側に位置し、該止水シートの後端が前記被覆の一部の前端よりも後側に位置すると共に、前記確認窓の全域を前記電線接続部の内面側から塞ぎ、
前記電線の端末部に圧着された状態の前記電線接続部は、前記止水シートに形成された前記開口部を通して、前記導体圧着部と前記導体露出部とが電気的に接続されると共に、前記導体圧着部と前記導体露出部との接続部分の前後が前記止水シートによって塞がれること。
(2) 上記(1)の構成の圧着端子の電線に対する接続構造であって、
前記電線接続部には、前記導体露出部の後端に対応した位置に前記確認窓が設けられていること。
(3) 上記(1)または(2)の構成の圧着端子の電線に対する接続構造であって、
前記止水シートが、接着剤によって前記電線接続部の内面に貼り付けられていること。(4) 上記(1)から(3)のいずれか1つの構成の圧着端子の電線に対する接続構造であって、
前記止水シートには、該止水シートの前記電線に接する面に接着剤が塗布されていること
In order to achieve the objective mentioned above, the connection structure to the electric wire of the crimp terminal concerning the present invention is characterized by following (1)-( 4 ).
(1) A wire having a conductor and a coating covering the conductor,
A crimp terminal having an electric connection portion to be electrically connected to a mating terminal at a front portion, and a wire connection portion crimped to an end portion of the electric wire at a rear portion;
Equipped with
The wire connection portion is crimped to a conductor crimping portion which is crimped to the exposed conductor portion where the coating of the end portion of the wire is removed and the conductor is exposed, and to a part of the coating left on the terminal portion of the wire The conductor crimping portion is formed on the front side, and the sheath crimping portion is formed on the rear side, and the conductor crimping portion is formed in a U-shaped cross section continuous from the front end of the conductor crimping portion to the rear end of the coating crimping portion. Formed
The wire connection portion in a state of being crimped to the end portion of the wire covers the front side of the front end of the conductor exposed portion to the rear side of the front end of a part of the sheath.
It is a connection structure to the said electric wire of the said crimp terminal, Comprising:
It further comprises a water blocking sheet disposed on the inner surface of the wire connection portion and having an opening at a position corresponding to the conductor exposed portion,
The front Symbol wire connecting portion, check window for viewing the waterproofing sheet located inside from the outside of the electric wire connecting portion is provided,
In the water blocking sheet, the front end of the water blocking sheet is located on the front side of the front end of the conductor exposed portion, and the rear end of the water blocking sheet is located on the rear side of the front end of a part of the coating. Closing the entire area of the confirmation window from the inner surface side of the wire connection portion;
The wire connecting portion in a state of being crimped to the end portion of the wire electrically connects the conductor crimping portion and the conductor exposed portion through the opening formed in the water blocking sheet, and Before and after the connecting portion between the conductor crimped portion and the conductor exposed portion is blocked by the water blocking sheet.
(2) A connection structure for the electric wire of the crimp terminal of the configuration of the above (1),
The wire connection portion is provided with the confirmation window at a position corresponding to a rear end of the conductor exposed portion.
(3) A connection structure of the crimp terminal of the above configuration (1) or (2) to the electric wire,
The water blocking sheet is attached to the inner surface of the wire connection portion by an adhesive. (4) A connection structure to a wire of a crimp terminal according to any one of the above (1) to (3),
In the water blocking sheet, an adhesive is applied to the surface of the water blocking sheet in contact with the electric wire .

上記(1)の構成の圧着端子の電線に対する接続構造によれば、電線の導体露出部が止水シートの開口部を通して導体圧着部に電気的に接続されている部分の前後を、止水シートで完全に塞ぐことができる。このため、端子と電線の電気的な接続性能を確保しながら、確実な止水性能を確保することができる。また、電線接続部の一対の加締片を、電線の端末部を包み込むように内側に丸めて加締めるだけで、止水シートによって導体露出部の前方を塞ぐことができるので、加締め工程後に更に、導体露出部の前方に生じる開口を塞ぐための潰し工程を追加する必要がない。その工程が無くなる分、工数や加工費の削減が図れる。また、電線に電線接続部を圧着した後の状態において、電線接続部に形成した確認窓から内部の止水シートを視認できるので、止水シートの組み付けの有無や組み付け状態の異常などを外から見て即座に確認することができ、止水性能の保証の判断を容易に下すことができる。
上記(2)の構成の圧着端子の電線に対する接続構造によれば、止水シートの確認窓が、導体露出部の後端に対応した位置に設けられているので、確認窓を形成することによって導体露出部の圧着に影響が出るおそれがない。
上記(3)の構成の圧着端子の電線に対する接続構造によれば、止水シートが接着剤を介して電線接続部の内面に貼り付けられているので、圧着時に止水シートがずれるおそれがなく、止水信頼性が高まる。
上記(4)の構成の圧着端子の電線に対する接続構造によれば、圧着時に電線がずれるおそれがなく、圧着品質の向上が図れる。
According to the connection structure of the crimp terminal of the configuration of (1) to the electric wire, the front and back of the portion where the conductor exposed portion of the electric wire is electrically connected to the conductor crimping portion through the opening of the water blocking sheet Can be completely blocked. For this reason, reliable water stop performance can be ensured while securing the electrical connection performance between the terminal and the wire. In addition, it is possible to close the front of the conductor exposed portion by the water blocking sheet only by rounding and caulking the pair of caulking pieces of the wire connection portion so as to wrap the end portion of the wire, so after the caulking process Furthermore, there is no need to add a crushing step to close the opening that occurs in front of the conductor exposed portion. As the process is eliminated, man-hours and processing costs can be reduced. In addition, in the state where the wire connection portion is crimped to the wire, the waterproof sheet inside can be visually recognized from the confirmation window formed in the wire connection portion, so that the presence or absence of assembly of the waterproof sheet and abnormality of the assembly state etc. It is possible to see immediately and confirm immediately, and can easily judge the guarantee of water blocking performance.
According to the connection structure of the crimp terminal of the configuration of the above (2) to the electric wire, the confirmation window of the water blocking sheet is provided at the position corresponding to the rear end of the conductor exposed portion. There is no risk that the crimping of exposed conductors will be affected.
According to the connection structure of the crimp terminal of the configuration of the above (3) to the electric wire, the water blocking sheet is attached to the inner surface of the wire connection portion via the adhesive, so there is no risk of the water blocking sheet being displaced at the time of pressure bonding. , Improve the reliability of water stop.
According to the connection structure to the electric wire of the crimp terminal of the configuration of the above (4), there is no possibility that the electric wire is displaced at the time of crimping, and the crimp quality can be improved.

本発明の圧着端子によれば、止水シートの組み付けの有無や組み付け状態の異常などを、確認窓を通して外から即座に確認することができ、止水性能の保証の判断を容易に下すことができる。また、本発明の圧着端子の電線に対する接続構造によれば、端子と電線の電気的な接続性能を確保しながら、確実な止水性能を確保することができる。また、加締め工程後に更に、導体露出部の前方に生じる開口を塞ぐための潰し工程を追加する必要がなく、その分、工数や加工費の削減が図れる。   According to the crimp terminal of the present invention, it is possible to immediately confirm from the outside through the confirmation window whether there is an assembly of the water blocking sheet or an assembly state, etc., and it is easy to judge the guarantee of the water blocking performance. it can. Moreover, according to the connection structure to the electric wire of the crimp terminal of this invention, a reliable water stop performance is securable, ensuring the electrical connection performance of a terminal and an electric wire. In addition, there is no need to add a crushing process for closing the opening that occurs in front of the conductor exposed portion after the caulking process, and the number of man-hours and processing costs can be reduced accordingly.

以上、本発明について簡潔に説明した。更に、以下に説明される発明を実施するための形態(以下、「実施形態」という。)を添付の図面を参照して通読することにより、本発明の詳細は更に明確化されるであろう。   The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading the modes for carrying out the invention described below (hereinafter referred to as "embodiments") with reference to the attached drawings. .

図1は、本発明の第1実施形態の圧着端子の電線に対する接続構造を説明する説明図であって、圧着端子の電線接続部に止水シートを配置する様子を示す斜視図である。FIG. 1 is an explanatory view for explaining the connection structure of the crimp terminal according to the first embodiment of the present invention with respect to the electric wire, and a perspective view showing how a water blocking sheet is disposed at the wire connection portion of the crimp terminal. 図2は、本発明の第1実施形態の圧着端子の電線に対する接続構造を説明する説明図であって、図1の次の工程として、圧着端子の電線接続部に止水シートの上から電線の端末部を配置する様子を示す斜視図である。FIG. 2 is an explanatory view for explaining the connection structure of the crimp terminal according to the first embodiment of the present invention to the electric wire, and as the next process of FIG. It is a perspective view which shows a mode that the terminal part of is arrange | positioned. 図3は、本発明の第1実施形態の圧着端子の電線に対する接続構造を説明する説明図であって、圧着端子の電線接続部に止水シートの上から電線の端末部を配置するに際し、導体露出部をどの位置に配置するかを示す斜視図である。Drawing 3 is an explanatory view explaining the connection structure to the electric wire of the crimp terminal of a 1st embodiment of the present invention, and when arranging the terminal part of an electric wire from the top of a water blocking sheet in the electric wire connection part of a crimp terminal It is a perspective view which shows where a conductor exposure part is arrange | positioned. 図4は、本発明の実施形態の圧着端子の電線の対する接続構造の外観斜視図である。FIG. 4: is an external appearance perspective view of the connection structure with respect to the electric wire of the crimp terminal of embodiment of this invention. 図5は、本発明の第2実施形態の圧着端子の電線に対する接続構造を説明する説明図であって、圧着端子の電線接続部に止水シートを配置する様子を示す斜視図である。Drawing 5 is an explanatory view explaining the connection structure to the electric wire of the crimp terminal of a 2nd embodiment of the present invention, and is a perspective view showing a situation that a water stop sheet is arranged in a wire connection part of a crimp terminal. 図6は、本発明の第2実施形態の圧着端子の電線の対する接続構造の外観斜視図である。FIG. 6 is an external perspective view of the connection structure to the electric wire of the crimp terminal of the second embodiment of the present invention. 図7は、従来例の圧着端子の電線の対する接続構造を説明する説明図であって、圧着端子の電線接続部に止水シートを配置し、その上で圧着端子の電線接続部に電線の端末部を配置する様子を示す斜視図である。FIG. 7 is an explanatory view for explaining the connection structure of the crimp terminal of the conventional example to the electric wire, and a water blocking sheet is disposed at the wire connection portion of the crimp terminal, and the electric wire connection portion of the crimp terminal is placed thereon It is a perspective view which shows a mode that a terminal part is arrange | positioned. 図8は、従来例の圧着端子の電線接続部を電線に対して加締めた状態を示す斜視図である。FIG. 8 is a perspective view showing a state where the wire connection portion of the crimp terminal of the conventional example is crimped to the wire. 図9は、図8の工程の次に電線接続部の前端を潰して接続構造を完成させた状態を示す斜視図である。FIG. 9 is a perspective view showing a state in which the front end of the wire connection portion is crushed following the process of FIG. 8 to complete the connection structure.

以下、本発明の第1実施形態を図面を参照して説明する。
図1は、本発明の第1実施形態の圧着端子の電線に対する接続構造を説明する説明図であって、圧着端子の電線接続部に止水シートを配置する様子を示す斜視図である。図2は、本発明の第1実施形態の圧着端子の電線に対する接続構造を説明する説明図であって、図1の次の工程として、圧着端子の電線接続部に止水シートの上から電線の端末部を配置する様子を示す斜視図である。図3は、本発明の第1実施形態の圧着端子の電線に対する接続構造を説明する説明図であって、圧着端子の電線接続部に止水シートの上から電線の端末部を配置するに際し、導体露出部をどの位置に配置するかを示す斜視図である。図4は、本発明の実施形態の圧着端子の電線の対する接続構造の外観斜視図である。
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory view for explaining the connection structure of the crimp terminal according to the first embodiment of the present invention with respect to the electric wire, and a perspective view showing how a water blocking sheet is disposed at the wire connection portion of the crimp terminal. FIG. 2 is an explanatory view for explaining the connection structure of the crimp terminal according to the first embodiment of the present invention to the electric wire, and as the next process of FIG. It is a perspective view which shows a mode that the terminal part of is arrange | positioned. Drawing 3 is an explanatory view explaining the connection structure to the electric wire of the crimp terminal of a 1st embodiment of the present invention, and when arranging the terminal part of an electric wire from the top of a water blocking sheet in the electric wire connection part of a crimp terminal It is a perspective view which shows where a conductor exposure part is arrange | positioned. FIG. 4: is an external appearance perspective view of the connection structure with respect to the electric wire of the crimp terminal of embodiment of this invention.

なお、図中の方向については、端子の長手方向(電線の長手方向と一致)の一方側である相手側端子に向かう向きを前方、その反対方向を後方、圧着端子に対して電線を載せる側を上方、その反対方向を下方、前方に向かって端子の幅方向の一方側及び他方側を左側及び右側とする。   With regard to the direction in the figure, the direction toward the mating terminal that is one side of the longitudinal direction of the terminal (coincident with the longitudinal direction of the wire) is forward, the opposite direction is backward, and the wire is mounted on the crimp terminal The upper side, the opposite direction is the lower side, and one side and the other side of the width direction of the terminal toward the front are the left side and the right side.

図1及び図2に示すように、第1実施形態で使用する圧着端子10は、前部に相手側オス端子に電気的に接続されるためのボックス部(電気接続部)11を有したメス端子である。ボックス部11は、相手側オス端子を挟持するバネ片12を内部に備えている。圧着端子10は、ボックス部11の後部に、電線の端末部に圧着される電線接続部20が形成されている。この圧着端子10は、キャリア80に連鎖状に連なった状態でプレス成形されている。   As shown in FIGS. 1 and 2, the crimp terminal 10 used in the first embodiment is a female having a box portion (electrical connection portion) 11 for being electrically connected to a mating male terminal at the front. It is a terminal. The box portion 11 is internally provided with a spring piece 12 for holding the mating male terminal. The crimp terminal 10 has a wire connection portion 20 crimped to the end portion of the wire at the rear of the box portion 11. The crimp terminal 10 is press-formed in a state of being connected to the carrier 80 in a chain.

電線接続部20は、前側の位置に、電線Wの端末部の被覆Wbが除去されて導体Waが露出した導体露出部Wapに圧着される導体圧着部21を有し、その後側の位置に、繋ぎ部23を介して、電線Wの端末部に残された被覆Wbの付いた部分に圧着される被覆圧着部22を有している。繋ぎ部23は、導体圧着部21の後側上端と被覆圧着部22の前側上端とが連続するように導体圧着部21及び被覆圧着部22を連結する。導体圧着部21及び被覆圧着部22は、それぞれ導体露出部Wapの径や被覆Wbの付いた部分の径に応じたサイズに形成されている。   The wire connection portion 20 has a conductor crimping portion 21 crimped to the exposed conductor portion Wap where the coating Wb of the end portion of the wire W is removed and the conductor Wa is exposed at the front position, and at the rear position. It has the covering crimp part 22 crimped | bonded to the part with the coating | coated Wb left at the terminal part of the electric wire W through the junction part 23. As shown in FIG. The connecting portion 23 connects the conductor crimping portion 21 and the sheath crimping portion 22 so that the rear upper end of the conductor crimping portion 21 and the front upper end of the sheath crimping portion 22 are continuous. The conductor crimped portion 21 and the sheath crimped portion 22 are formed in sizes according to the diameter of the conductor exposed portion Wap and the diameter of the portion to which the sheath Wb is attached.

これら導体圧着部21及び被覆圧着部22は、共通の底板部25と、該共通の底板部25の左右両側縁から上方に立設し、且つ電線Wの導体露出部Wap及び被覆Wbの付いた部分を包み込むように内側に曲げられることで導体露出部Wap及び被覆Wbの付いた部分を底板部25の上面に密着した状態で加締める左右一対の共通の加締片26、27と、を有する。導体圧着部21、被覆圧着部22及び繋ぎ部23は、導体圧着部21の前端から被覆圧着部22の後端まで連続して有する断面U字状に形成されている。また、電線接続部20は、電線Wの端末部に圧着された状態で、導体露出部Wapの前端Wap1よりも前方側から、被覆Wbの付いた部分の前端Wb1よりも後方側までを、連続して一体的に覆うような長さに構成されている。   The conductor crimping portion 21 and the sheath crimping portion 22 are provided above the common bottom plate portion 25 and the left and right side edges of the common bottom plate portion 25 and have the conductor exposed portion Wap of the electric wire W and the sheath Wb attached thereto. It has a pair of left and right common clamping pieces 26 and 27 which are crimped in a state of being in contact with the upper surface of the bottom plate portion 25 with the conductor exposed portion Wap and the covering Wb attached by being bent inwards so as to wrap the portion. . The conductor crimping portion 21, the sheath crimping portion 22, and the connecting portion 23 are formed in a U-shaped cross section continuously from the front end of the conductor crimping portion 21 to the rear end of the sheath crimping portion 22. Further, the wire connection portion 20 is continuous from the front side with respect to the front end Wap1 of the conductor exposed portion Wap to the rear side with respect to the front end Wb1 of the portion with the coating Wb in a state of being crimped to the end portion of the electric wire W It is configured to be integrally covered.

また、繋ぎ部23は、導体露出部Wapの後端、つまり電線Wの端末部において残った被覆Wbの前端Wb1辺りを覆うように、導体圧着部21と被覆圧着部22の間に設けられている。この繋ぎ部23には、電線接続部20の外面から内面に貫通する小さな貫通孔よりなる確認窓28が設けられている。この確認窓28は、圧着端子10を電線Wの端末部に圧着した状態において、電線接続部20の内部の状態(特に後述する止水シート30の状態)を確認するためのものである。確認窓28は、導体露出部Wapに対する導体圧着部21の圧着、及び電線Wの端末部において残った被覆Wbに対する被覆圧着部22の圧着に影響のない位置に設けられている。   The joint portion 23 is provided between the conductor crimping portion 21 and the sheath crimping portion 22 so as to cover the rear end of the conductor exposed portion Wap, that is, the front end Wb1 of the sheath Wb remaining at the end of the electric wire W. There is. The connecting portion 23 is provided with a confirmation window 28 which is a small through hole penetrating from the outer surface of the wire connection portion 20 to the inner surface. The check window 28 is used to check the internal state of the wire connection portion 20 (in particular, the state of the water blocking sheet 30 described later) in a state in which the crimp terminal 10 is crimped to the end of the wire W. The confirmation window 28 is provided at a position that does not affect the crimping of the conductor crimping portion 21 against the conductor exposed portion Wap and the crimping of the sheath crimping portion 22 against the coating Wb remaining at the end of the electric wire W.

そして、圧着端子10の電線Wに対する接続構造は、次の手順で実現される。
まず、図1及び図2に示すように、圧着端子10の断面U字状に形成された電線接続部20の内面に、導体露出部Wapに対応する位置に開口部34を有した止水シート30を配置する。
And the connection structure to the electric wire W of the crimp terminal 10 is implement | achieved in the following procedure.
First, as shown in FIGS. 1 and 2, a water blocking sheet having an opening 34 at a position corresponding to the conductor exposed portion Wap on the inner surface of the wire connection portion 20 formed in a U-shaped cross section of the crimp terminal 10. Place 30.

即ち、この止水シート30は、開口部34の位置に応じて図1のようにコ字状あるいはロ字状(図示略)に形成されている。止水シート30は、開口部34よりも前側の位置に電線接続部20の幅方向に延在する前側シート部31を有し、開口部34よりも後側の位置に電線接続部20の幅方向に延在する後側シート部33を有している。さらに止水シート30は、開口部34の側方の位置に前側シート部31と後側シート部33を繋ぐ側方シート部32を有している。   That is, the water blocking sheet 30 is formed in a U-shape or a U-shape (not shown) as shown in FIG. 1 according to the position of the opening 34. The water blocking sheet 30 has a front side sheet portion 31 extending in the width direction of the wire connection portion 20 at a position on the front side of the opening 34 and a width of the wire connection portion 20 at a position on the rear side of the opening 34 It has a rear seat portion 33 extending in the direction. Furthermore, the water blocking sheet 30 has a side sheet portion 32 connecting the front side sheet portion 31 and the rear side sheet portion 33 at a side position of the opening portion 34.

また、この止水シート30は、電線接続部20を電線Wの端末部に対して圧着した際に、電線接続部20の前端20aと後端20bとから止水シート30の前端30aと後端30bとが外部にはみ出ないような長さに形成されている。具体的には、止水シート30は、前側シート部31の前端30aが導体圧着部21の前端20aよりも後側に位置し、後側シート部33の後端30bが被覆圧着部22の後端20bよりも前側に位置する長さに形成されている。止水シート30は、該止水シート30の一方の面に塗布された接着剤によって電線接続部20の内面に貼り付けられる。   Further, when the wire connection portion 20 is crimped to the end portion of the wire W, the water stop sheet 30 has the front end 30 a and the rear end of the water stop sheet 30 from the front end 20 a and the rear end 20 b of the wire connection portion 20. 30b is formed in such a length that it does not go outside. Specifically, in the water blocking sheet 30, the front end 30a of the front side sheet portion 31 is positioned rearward of the front end 20a of the conductor crimping portion 21, and the rear end 30b of the rear side sheet portion 33 is behind the coated crimping portion 22. It is formed in the length located in front of end 20b. The water blocking sheet 30 is attached to the inner surface of the wire connection portion 20 by an adhesive applied to one surface of the water blocking sheet 30.

止水シート30を電線接続部20の内面に配置したら、次に皮むき(被覆Wbを所定長さ剥離)した電線Wの端末部を電線接続部20の底板部25の上面に配置する。その際、図3に示すように、導体露出部Wapの前端Wap1が止水シート30の前端30aよりも寸法Hだけ後側に位置し、且つ、被覆の付いた部分の前端Wb1が、止水シート30の後端30bよりも前側で且つ電線接続部20の後端20bよりも前側に位置するように、電線Wの端末部を電線接続部20の底板部25の上面に配置する。   After the water blocking sheet 30 is disposed on the inner surface of the wire connection portion 20, the end portion of the wire W peeled off (the covering Wb is peeled off for a predetermined length) is then disposed on the upper surface of the bottom plate portion 25 of the wire connection portion 20. At that time, as shown in FIG. 3, the front end Wap1 of the conductor exposed portion Wap is located behind the front end 30a of the water blocking sheet 30 by the dimension H, and the front end Wb1 of the covered part is The end portion of the wire W is disposed on the upper surface of the bottom plate 25 of the wire connection portion 20 so as to be located on the front side of the rear end 30 b of the sheet 30 and on the front side of the rear end 20 b of the wire connection portion 20.

そしてその状態で、図4に示すように、電線接続部20を電線Wの端末部に対して圧着する。つまり、左右の加締片26、27を電線Wの端末部を包み込むように順番に内側に曲げて加締め、一方の加締片26の端部の上に他方の加締片27の端部を重ねる。   Then, in this state, as shown in FIG. 4, the wire connection portion 20 is crimped to the end portion of the wire W. That is, the left and right caulking pieces 26 and 27 are bent inward and caulked in order so as to wrap the end of the electric wire W, and the end of the other caulking piece 27 on the end of one caulking piece 26 Layer

このように加締めることで、止水シート30に形成された開口部34を通して、圧着端子10の導体圧着部21と電線Wの導体露出部Wapとが電気的に接続される。またその状態で、電線接続部20の繋ぎ部23に形成した確認窓28を通して内部の止水シート30が視認可能となり、実施形態の接続構造が完成する。   By caulking in this manner, the conductor crimped portion 21 of the crimp terminal 10 and the conductor exposed portion Wap of the electric wire W are electrically connected through the opening 34 formed in the water blocking sheet 30. Further, in that state, the water blocking sheet 30 inside can be visually recognized through the confirmation window 28 formed in the connecting portion 23 of the wire connection portion 20, and the connection structure of the embodiment is completed.

以上説明したように、本発明の実施形態の圧着端子10の電線Wに対する接続構造によれば、止水性を確保するために電線接続部20の内面に配置した止水シート30の組み付けの有無や組み付け状態の異常などを確認窓28を通して外から確認することができる。従って、止水性能の保証の判断を容易に下すことができる。   As described above, according to the connection structure of the crimp terminal 10 to the electric wire W of the embodiment of the present invention, the presence or absence of the assembly of the water blocking sheet 30 disposed on the inner surface of the wire connection portion 20 in order to secure water tightness It is possible to confirm from the outside through the confirmation window 28 an abnormality in the assembled state and the like. Therefore, judgment of guarantee of water blocking performance can be made easily.

また、確認窓28を通して止水シート30の有無などを確認することができるので、例えば止水シート30を電線接続部20の前端20a及び後端20bからはみ出るように長く形成して、電線接続部20からはみ出た止水シート30の有無によって確認する場合と比べて、止水シート30の長さを短く設定することができる。このため、止水シート30の必要量を少なくすることができる。   In addition, since the presence or absence of the water blocking sheet 30 can be confirmed through the confirmation window 28, for example, the water blocking sheet 30 is formed long so as to protrude from the front end 20a and the rear end 20b of the wire connection portion 20. The length of the water blocking sheet 30 can be set shorter than in the case where it is confirmed by the presence or absence of the water blocking sheet 30 that has run out from 20. For this reason, the required amount of the water blocking sheet 30 can be reduced.

また、本発明の実施形態の圧着端子10の電線Wに対する接続構造によれば、電線Wの導体露出部Wapが止水シート30の開口部34を通して導体圧着部21に電気的に接続されている部分の前後を止水シート30で完全に塞ぐことができる。このため、圧着端子10と電線Wの電気的な接続性能を確保しながら、確実な止水性能を確保することができる。   Moreover, according to the connection structure to the electric wire W of the crimp terminal 10 of the embodiment of the present invention, the conductor exposed portion Wap of the electric wire W is electrically connected to the conductor crimped portion 21 through the opening 34 of the water blocking sheet 30. The front and back of the portion can be completely closed with a water blocking sheet 30. For this reason, a reliable water stop performance can be secured while securing the electrical connection performance of the crimp terminal 10 and the electric wire W.

また、電線接続部20の一対の加締片26、27を、電線Wの端末部を包み込むように内側に丸めて加締めるだけで、止水シート30によって導体露出部Wapの前方を塞ぐことができるので、加締め工程後に更に、導体露出部Wapの前方に生じる開口を塞ぐための潰し工程を追加する必要がない。よって、その工程が無くなる分、工数や加工費の削減が図れる。   Also, the waterproof sheet 30 can block the front of the conductor exposed portion Wap simply by rounding and caulking the pair of caulking pieces 26 and 27 of the wire connection portion 20 so as to wrap the end portion of the wire W. Since it can do, it is not necessary to add the crushing process for closing the opening which arises in the front of conductor exposure part Wap further after a crimping process. Therefore, man-hours and processing costs can be reduced as the process is eliminated.

また、止水シート30を、接着剤によって電線接続部20の内面に貼り付けているので、圧着時に止水シート30がずれるおそれがなく、止水信頼性を高めることができる。   Further, since the water blocking sheet 30 is attached to the inner surface of the wire connection portion 20 by an adhesive, there is no possibility that the water blocking sheet 30 may be displaced at the time of pressure bonding, and the water blocking reliability can be enhanced.

以下、本発明の第2実施形態を図面を参照して説明する。図5は、本発明の第2実施形態の圧着端子の電線に対する接続構造を説明する説明図であって、圧着端子の電線接続部に止水シートを配置する様子を示す斜視図である。図6は、本発明の第2実施形態の圧着端子の電線の対する接続構造の外観斜視図である。   Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. Drawing 5 is an explanatory view explaining the connection structure to the electric wire of the crimp terminal of a 2nd embodiment of the present invention, and is a perspective view showing a situation that a water stop sheet is arranged in a wire connection part of a crimp terminal. FIG. 6 is an external perspective view of the connection structure to the electric wire of the crimp terminal of the second embodiment of the present invention.

上記第1実施形態においては、小さな貫通孔で確認窓28を構成した場合を示した。図5及び図6に示す第2実施形態の圧着端子10Bのように、電線接続部20の繋ぎ部23に設けたスリットによって確認窓28Bを構成してもよい。この場合のスリットは、加締片26の上端から下方に向けて形成すればよい。   In the said 1st Embodiment, the case where the confirmation window 28 was comprised by the small through-hole was shown. As in the crimp terminal 10B of the second embodiment shown in FIGS. 5 and 6, the confirmation window 28B may be configured by a slit provided in the connection portion 23 of the wire connection portion 20. The slit in this case may be formed downward from the upper end of the caulking piece 26.

なお、本発明は、上述した実施形態に限定されるものではなく、適宜、変形、改良、等が可能である。その他、上述した実施形態における各構成要素の材質、形状、寸法、数、配置箇所、等は本発明を達成できるものであれば任意であり、限定されない。   The present invention is not limited to the embodiments described above, and appropriate modifications, improvements, etc. are possible. In addition, the material, shape, size, number, arrangement location, and the like of each component in the embodiment described above are arbitrary and not limited as long as the present invention can be achieved.

例えば、止水シート30の電線Wに接する面にも接着剤を塗布しておけば、圧着時に電線Wがずれるおそれをなくすことができ、圧着品質の向上を図ることができる。   For example, if the adhesive is applied also to the surface of the water blocking sheet 30 in contact with the electric wire W, the possibility of the electric wire W shifting at the time of pressure bonding can be eliminated, and the pressure bonding quality can be improved.

上述した実施形態では、止水シート30が、一方の面に塗布された接着剤によって電線接続部20の内面に貼り付けられるとした。止水シート30の一方の面に接着剤を塗布してその一方の面と電線接続部20の内面とを貼り付けるとともに、止水シート30の他方の面に接着剤を塗布してその他方の面と電線Wの被覆Wbと接着することにより、次の効果を奏する。
電線Wの端末部に圧着端子10が圧着される前の状況において、止水シート30の一方の面の接着剤によって電線接続部20に対して配置された止水シート30が移動し難くなり、止水シート30の他方の面の接着剤によって止水シートに対して配置された電線Wが移動し難くなる。このように電線接続部20、止水シート30及び電線Wの配置位置が安定的に固定されていることにより、これらの部材の位置ずれに伴う圧着時の接続不良を防ぐことができる。
また、高温環境下では、電線Wが長手方向に伸長して該電線Wの断面が細くなることが起き得る。止水シートに接着剤が塗布されていない場合には、該電線の断面が細くなることによって、止水シートと被覆との間に隙間が形成される虞がある。しかし、止水シート30の両面に接着剤が塗布されている場合には、圧着端子10が圧着された電線Wの端末部において電線Wが細くなろうとしても、止水シート30が電線Wの変形に追従して変形する。このため、電線接続部20と止水シート30との間及び止水シート30と被覆Wbとの間に隙間が形成されることを防ぐことができる。こうして、電線接続部20と止水シート30との間または止水シート30と被覆Wbとの間を通して圧着端子10の内部に水が浸入することが防がれるため、止水性能の向上が図られる。
また、圧着端子10は、加締められた電線接続部20の加締片26、27が時間の経過とともに加締片26、27の保持力が弱まる向きに僅かながら開くことが起き得る。止水シートに接着剤が塗布されていない場合には、加締片が開くことによって、電線接続部と止水シートとの間に隙間が形成される虞がある。しかし、止水シート30の両面に接着剤が塗布されている場合には、加締められた電線接続部20の加締片26、27が開こうとしても、被覆Wbに接合された止水シート30が加締片26、27の変形に抗する応力を加締片26、27に与える。このため、電線接続部20と止水シート30との間及び止水シート30と被覆Wbとの間に隙間が形成されることを防ぐことができる。こうして、電線接続部20と止水シート30との間または止水シート30と被覆Wbとの間を通して圧着端子10の内部に水が浸入することが防がれるため、止水性能の向上が図られる。
尚、本発明は、止水シート30の両面に接着剤を塗布するものに限られない。止水シート30の上述した一方の面及び他方の面のいずれか1つに接着剤を塗布するものであってもよい。止水シート30のいずれか1つの面に接着剤を塗布する構成であっても、圧着時の接続不良の防止、及び止水性能の向上という効果を奏する。
In the embodiment described above, the water blocking sheet 30 is attached to the inner surface of the wire connection portion 20 by the adhesive applied to one surface. An adhesive is applied to one surface of the water blocking sheet 30 and the one surface and the inner surface of the wire connection portion 20 are attached, and an adhesive is applied to the other surface of the water blocking sheet 30 to By bonding the surface and the coating Wb of the electric wire W, the following effects can be obtained.
In a situation before the crimp terminal 10 is crimped to the end portion of the wire W, the adhesive on one surface of the water shut-off sheet 30 makes it difficult for the water shut-off sheet 30 disposed relative to the wire connection unit 20 to move The adhesive on the other side of the water blocking sheet 30 makes it difficult for the electric wire W disposed to the water blocking sheet to move. Since the arrangement positions of the wire connection portion 20, the water blocking sheet 30, and the wire W are stably fixed as described above, it is possible to prevent connection failure at the time of crimping due to positional deviation of these members.
In addition, under the high temperature environment, it may occur that the electric wire W extends in the longitudinal direction and the cross section of the electric wire W becomes thin. In the case where the adhesive is not applied to the water blocking sheet, the cross section of the electric wire may be narrowed to form a gap between the water blocking sheet and the coating. However, when the adhesive is applied to both sides of the water blocking sheet 30, the water blocking sheet 30 is the wire of the wire W even if the wire W is going to be thin at the end of the wire W to which the crimp terminal 10 is crimped. It deforms following the deformation. For this reason, it can prevent that a crevice is formed between electric wire connection part 20 and water stop sheet 30, and between water stop sheet 30 and covering Wb. Thus, the entry of water into the inside of the crimp terminal 10 through the space between the wire connection portion 20 and the water blocking sheet 30 or between the water blocking sheet 30 and the cover Wb is prevented. Be
In addition, the crimp terminal 10 may slightly open in a direction in which the holding force of the crimped pieces 26 and 27 weakens with the passage of time. When the adhesive is not applied to the water blocking sheet, a gap may be formed between the wire connection portion and the water blocking sheet by opening the caulking pieces. However, when the adhesive is applied to both sides of the water blocking sheet 30, the water blocking sheet joined to the covering Wb even if the caulking pieces 26, 27 of the crimped wire connection portion 20 try to open A stress is applied to the caulking pieces 26, 27 against the deformation of the caulking pieces 26, 27. For this reason, it can prevent that a crevice is formed between electric wire connection part 20 and water stop sheet 30, and between water stop sheet 30 and covering Wb. Thus, the entry of water into the inside of the crimp terminal 10 through the space between the wire connection portion 20 and the water blocking sheet 30 or between the water blocking sheet 30 and the cover Wb is prevented. Be
The present invention is not limited to the application of the adhesive on both sides of the water blocking sheet 30. An adhesive may be applied to any one of the one side and the other side of the water blocking sheet 30 described above. Even in the configuration in which the adhesive is applied to any one surface of the water blocking sheet 30, the effect of preventing connection failure at the time of pressure bonding and improving the water blocking performance can be achieved.

また、繋ぎ部23に確認窓28、28Bを設けた形態について説明した。確認窓は、電線接続部20に適宜設けることができる。このとき、導体圧着部21の圧着及び被覆圧着部22の圧着に影響のない位置に確認窓28を設けることが好ましい。   Moreover, the form which provided the confirmation windows 28 and 28B in the connection part 23 was demonstrated. The confirmation window can be provided at the wire connection portion 20 as appropriate. At this time, it is preferable to provide the confirmation window 28 at a position which does not affect the crimping of the conductor crimping portion 21 and the crimping of the coated crimping portion 22.

ここで、上述した本発明に係る圧着端子の電線に対する接続構造の実施形態の特徴をそれぞれ以下[1]〜[4]に簡潔に纏めて列記する。
[1] 導体(Wa)と、前記導体(Wa)を覆う被覆(Wb)と、を有する電線(W)と、
相手側端子に電気的に接続されるための電気接続部(11)が前部に形成され、前記電線(W)の端末部に圧着される電線接続部(20)が後部に形成された圧着端子(10)と、
を備え、
前記電線接続部(20)は、前記電線(W)の端末部の被覆(Wb)が除去されて導体(Wa)が露出した導体露出部(Wap)に圧着される導体圧着部(21)と、前記電線(W)の端末部に残された被覆(Wb)の一部に圧着される被覆圧着部(22)と、を有し、前記導体圧着部(21)が前側に、前記被覆圧着部(22)が後側に形成され、該導体圧着部(21)の前端から該被覆圧着部(22)の後端まで連続する断面U字状に形成され、
前記電線(W)の端末部に圧着された状態の前記電線接続部(20)が、前記導体露出部(Wap)の前端(Wap1)よりも前方側から前記被覆(Wb)の一部の前端(Wb1)よりも後方側までを覆う、
前記圧着端子(10)の前記電線(W)に対する接続構造であって、
前記電線接続部(20)の内面に配置された、前記導体露出部(Wap)に対応する位置に開口部(34)を有する止水シート(30)をさらに備え、
前記止水シート(30)は、該止水シート(30)の前端(30a)が前記導体露出部(Wap)の前端(Wap1)よりも前側に位置し、該止水シート(30)の後端(30b)が前記被覆(Wb)の一部の前端(Wb1)よりも後側に位置し、
前記電線接続部(20)には、該電線接続部(20)の外部から内部に位置する前記止水シート(30)を視認するための確認窓(28、28B)が設けられ、
前記電線(W)の端末部に圧着された状態の前記電線接続部(20)は、前記止水シート(30)に形成された前記開口部(34)を通して、前記導体圧着部(21)と前記導体露出部(Wap)とが電気的に接続されると共に、前記導体圧着部(21)と前記導体露出部(Wap)との接続部分の前後が前記止水シート(30)によって塞がれることを特徴とする圧着端子(10)の電線(W)に対する接続構造。
[2] 前記電線接続部(20)には、前記導体露出部(Wap)の後端に対応した位置に前記確認窓(28、28B)が設けられていることを特徴とする[1]に記載の圧着端子(10)の電線(W)に対する接続構造。
[3] 前記止水シート(30)が、接着剤によって前記電線接続部(20)の内面に貼り付けられていることを特徴とする[1]または[2]に記載の圧着端子(10)の電線(W)に対する接続構造。
[4] 前記止水シート(30)には、該止水シート(30)の前記電線(W)に接する面に接着剤が塗布されていることを特徴とする[1]から[3]のいずれか1項に記載の圧着端子(10)の電線(W)に対する接続構造。
Here, the features of the embodiment of the connection structure of the crimp terminal according to the present invention to the electric wire according to the present invention will be briefly summarized and listed in the following [1] to [4].
[1] A wire (W) having a conductor (Wa) and a coating (Wb) covering the conductor (Wa);
An electrical connection (11) to be electrically connected to the mating terminal is formed at the front, and an electrical connection (20) crimped to the end of the electrical wire (W) is formed at the rear Terminal (10),
Equipped with
The wire connection portion (20) is a conductor crimping portion (21) which is crimped to a conductor exposed portion (Wap) in which the coating (Wb) of the end portion of the wire (W) is removed and the conductor (Wa) is exposed. The coated crimping portion (22) crimped to a part of the coating (Wb) left at the end of the electric wire (W), and the conductor crimping portion (21) is on the front side, the coated crimping A section (22) is formed on the rear side, and is formed in a U-shaped cross section which continues from the front end of the conductor crimping section (21) to the rear end of the coated crimping section (22);
The wire connection portion (20) in a state of being crimped to the end portion of the wire (W) is a front end of a part of the sheath (Wb) from the front side with respect to the front end (Wap1) of the conductor exposed portion (Wap) Cover to the rear side than (Wb1),
A connection structure of the crimp terminal (10) to the electric wire (W),
It further comprises a water blocking sheet (30) having an opening (34) at a position corresponding to the conductor exposed portion (Wap) disposed on the inner surface of the wire connection portion (20).
The front end (30a) of the water blocking sheet (30) is positioned forward of the front end (Wap1) of the conductor exposed portion (Wap), and the water blocking sheet (30) is behind the water blocking sheet (30) The end (30b) is located behind the front end (Wb1) of a part of the coating (Wb);
The wire connection portion (20) is provided with a confirmation window (28, 28B) for visually recognizing the water blocking sheet (30) located inside from outside the wire connection portion (20),
The wire connection portion (20) in a state of being crimped to the end portion of the wire (W) passes through the opening (34) formed in the water blocking sheet (30), and the conductor crimp portion (21) The conductor exposed portion (Wap) is electrically connected, and the front and rear portions of the connection portion between the conductor crimped portion (21) and the conductor exposed portion (Wap) are blocked by the water blocking sheet (30) Connection structure to the electric wire (W) of the crimp terminal (10) characterized in that.
[2] The wire connection portion (20) is characterized in that the confirmation window (28, 28B) is provided at a position corresponding to the rear end of the conductor exposed portion (Wap) [1] Connection structure to the electric wire (W) of the crimp terminal (10) described.
[3] The crimp terminal (10) according to [1] or [2], wherein the water blocking sheet (30) is attached to the inner surface of the wire connection portion (20) by an adhesive. Connection structure to the wire (W) of
[4] The water blocking sheet (30) is characterized in that an adhesive is applied to the surface of the water blocking sheet (30) in contact with the electric wire (W) in [1] to [3] The connection structure with respect to the electric wire (W) of the crimp terminal (10) of any one statement.

10,10B 圧着端子
11 電気接続部
20 電線接続部
21 導体圧着部
22 被覆圧着部
25 底板部
26,27 加締片
28,28B 確認窓
30 止水シート
30a 前端
30b 後端
34 開口部
W 電線
Wa 導体
Wap 導体露出部
Wap1 導体露出部の前端
Wb 被覆
Wb1 被覆の付いた部分の前端
DESCRIPTION OF SYMBOLS 10, 10B Crimping terminal 11 Electrical connection part 20 Electric wire connection part 21 Conductor crimping part 22 Cover crimping part 25 Bottom plate part 26 27 Clamping piece 28, 28B Confirmation window 30 Water blocking sheet 30a Front end 30b Rear end 34 Opening W Electric wire Wa Conductor Wap Conductor exposed part Wap1 Conductor exposed part front end Wb Cover Wb1 Covered part front end

Claims (4)

導体と、前記導体を覆う被覆と、を有する電線と、
相手側端子に電気的に接続されるための電気接続部が前部に形成され、前記電線の端末部に圧着される電線接続部が後部に形成された圧着端子と、
を備え、
前記電線接続部は、前記電線の端末部の被覆が除去されて導体が露出した導体露出部に圧着される導体圧着部と、前記電線の端末部に残された被覆の一部に圧着される被覆圧着部と、を有し、前記導体圧着部が前側に、前記被覆圧着部が後側に形成され、該導体圧着部の前端から該被覆圧着部の後端まで連続する断面U字状に形成され、
前記電線の端末部に圧着された状態の前記電線接続部が、前記導体露出部の前端よりも前方側から前記被覆の一部の前端よりも後方側までを覆う、
前記圧着端子の前記電線に対する接続構造であって、
前記電線接続部の内面に配置された、前記導体露出部に対応する位置に開口部を有する止水シートをさらに備え、
記電線接続部には、該電線接続部の外部から内部に位置する前記止水シートを視認するための確認窓が設けられ、
前記止水シートは、該止水シートの前端が前記導体露出部の前端よりも前側に位置し、該止水シートの後端が前記被覆の一部の前端よりも後側に位置すると共に、前記確認窓の全域を前記電線接続部の内面側から塞ぎ、
前記電線の端末部に圧着された状態の前記電線接続部は、前記止水シートに形成された前記開口部を通して、前記導体圧着部と前記導体露出部とが電気的に接続されると共に、前記導体圧着部と前記導体露出部との接続部分の前後が前記止水シートによって塞がれることを特徴とする圧着端子の電線に対する接続構造。
A wire having a conductor and a coating covering the conductor;
A crimp terminal having an electric connection portion to be electrically connected to a mating terminal at a front portion, and a wire connection portion crimped to an end portion of the electric wire at a rear portion;
Equipped with
The wire connection portion is crimped to a conductor crimping portion which is crimped to the exposed conductor portion where the coating of the end portion of the wire is removed and the conductor is exposed, and to a part of the coating left on the terminal portion of the wire The conductor crimping portion is formed on the front side, and the sheath crimping portion is formed on the rear side, and the conductor crimping portion is formed in a U-shaped cross section continuous from the front end of the conductor crimping portion to the rear end of the coating crimping portion. Formed
The wire connection portion in a state of being crimped to the end portion of the wire covers the front side of the front end of the conductor exposed portion to the rear side of the front end of a part of the sheath.
It is a connection structure to the said electric wire of the said crimp terminal, Comprising:
It further comprises a water blocking sheet disposed on the inner surface of the wire connection portion and having an opening at a position corresponding to the conductor exposed portion,
The front Symbol wire connecting portion, check window for viewing the waterproofing sheet located inside from the outside of the electric wire connecting portion is provided,
In the water blocking sheet, the front end of the water blocking sheet is located on the front side of the front end of the conductor exposed portion, and the rear end of the water blocking sheet is located on the rear side of the front end of a part of the coating. Closing the entire area of the confirmation window from the inner surface side of the wire connection portion;
The wire connecting portion in a state of being crimped to the end portion of the wire electrically connects the conductor crimping portion and the conductor exposed portion through the opening formed in the water blocking sheet, and The connection structure with respect to the electric wire of the crimp terminal characterized by the front and back of the connection part of a conductor crimping part and the said conductor exposed part being obstruct | occluded by the said water blocking sheet.
前記電線接続部には、前記導体露出部の後端に対応した位置に前記確認窓が設けられていることを特徴とする請求項1に記載の圧着端子の電線に対する接続構造。   The connection structure of the crimp terminal according to claim 1, wherein the confirmation window is provided at a position corresponding to a rear end of the conductor exposed portion in the wire connection portion. 前記止水シートが、接着剤によって前記電線接続部の内面に貼り付けられていることを特徴とする請求項1または2に記載の圧着端子の電線に対する接続構造。   The connection structure with respect to the electric wire of the crimp terminal according to claim 1 or 2, wherein the water blocking sheet is attached to the inner surface of the electric wire connection portion by an adhesive. 前記止水シートには、該止水シートの前記電線に接する面に接着剤が塗布されていることを特徴とする請求項1から3のいずれか1項に記載の圧着端子の電線に対する接続構造。   The adhesive structure is apply | coated to the surface which contact | connects the said electric wire of this water blocking sheet in the said water blocking sheet, The connection structure with respect to the electric wire of the crimp terminal of any one of Claim 1 to 3 characterized by the above-mentioned. .
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