JP5952668B2 - Wire and terminal connection structure - Google Patents

Wire and terminal connection structure Download PDF

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JP5952668B2
JP5952668B2 JP2012161779A JP2012161779A JP5952668B2 JP 5952668 B2 JP5952668 B2 JP 5952668B2 JP 2012161779 A JP2012161779 A JP 2012161779A JP 2012161779 A JP2012161779 A JP 2012161779A JP 5952668 B2 JP5952668 B2 JP 5952668B2
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electric wire
blade
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blade surface
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JP2014022275A (en
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伊藤　裕一
裕一 伊藤
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Yazaki Corp
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Description

本発明は、丸型電線を端子金具の圧接刃に押圧することで丸型電線と端子金具とを導通接続させる電線と端子の接続構造に関する。   The present invention relates to a connection structure between an electric wire and a terminal, in which the round electric wire and the terminal fitting are conductively connected by pressing the round electric wire against the press contact blade of the terminal fitting.

下記特許文献１や、特許文献２には、電線を端子金具の圧接刃に押圧することで電線と端子金具とを導通接続させる電線と端子の接続構造が開示されている。   The following Patent Document 1 and Patent Document 2 disclose a connection structure between an electric wire and a terminal that electrically connects the electric wire and the terminal fitting by pressing the electric wire against the press contact blade of the terminal fitting.

図１１（ａ）及び図１１（ｂ）は、このような電線と端子の接続構造に使用される圧接刃１００の一般的な形状を示している。   FIG. 11A and FIG. 11B show a general shape of the press contact blade 100 used for such a connection structure between an electric wire and a terminal.

図示の圧接刃１００は、導体１１１の外周が絶縁被覆１１２で覆われた丸型電線１１０を圧接接続するものである。この圧接刃１００は、絶縁被覆１１２を切断する刃面１０１が、スリット１２０を形成するＵ字状になっている。スリット１２０の幅寸法ｗ１は、導体１１１の外形よりも小さく設定されている。   The illustrated press-contacting blade 100 press-connects a round electric wire 110 whose outer periphery of a conductor 111 is covered with an insulating coating 112. In the press contact blade 100, the blade surface 101 that cuts the insulating coating 112 has a U shape that forms a slit 120. The width dimension w <b> 1 of the slit 120 is set smaller than the outer shape of the conductor 111.

図示の圧接刃１００は、丸型電線１１０をスリット１２０内に押し込むことにより、丸型電線１１０の両側の絶縁被覆１１２がスリット１２０を形成している両側の刃面１０１により切断され、両側の刃面１０１が導体１１１に押圧接触することで、導体１１１と導通状態になる。   In the illustrated press contact blade 100, when the round electric wire 110 is pushed into the slit 120, the insulating coating 112 on both sides of the round electric wire 110 is cut by the blade surfaces 101 on both sides forming the slit 120. When the surface 101 is in press contact with the conductor 111, the conductor 111 is brought into conduction.

図示の圧接刃１００の場合、スリット１２０を形成する両側の刃面１０１には、導体１１１を挟む力の反力で、図に矢印Ｆ１で示すように、スリット幅を拡げる方向の曲げ荷重が作用する。   In the case of the illustrated press contact blade 100, a bending load in the direction of expanding the slit width acts on the blade surfaces 101 on both sides forming the slit 120 by the reaction force of the force sandwiching the conductor 111, as shown by the arrow F 1 in the figure. To do.

特開２００５−３３２６３２号公報JP 2005-332632 A 特開２００９−２７７５７１号公報JP 2009-277571 A

ところで、圧接刃１００を組み込むコネクタハウジングを小型化するために、図１１（ｂ）に示すように、圧接刃１００の幅寸法Ｂ１を狭幅化すると、それに伴い、スリット１２０を挟む両側の刃本体１０２の幅寸法ｂ１が狭くなり、刃本体１０２の曲げ強度が低下する。   By the way, in order to reduce the size of the connector housing in which the press contact blade 100 is incorporated, as shown in FIG. 11B, when the width dimension B1 of the press contact blade 100 is narrowed, the blade bodies on both sides sandwiching the slit 120 accordingly. The width dimension b1 of 102 becomes narrow, and the bending strength of the blade body 102 decreases.

そのため、図１２に矢印Ｍ１で示すように、導体１１１から刃面１０１に作用する反力によって、スリット１２０の両側の刃本体１０２がスリット幅を拡げる方向に撓み変形することがあった。そして、スリット幅を拡げる方向への刃本体１０２の変形は、刃面１０１と導体１１１との間の接触圧の低下を招き、電気的な接続性能を低下させるおそれがあった。   For this reason, as indicated by an arrow M1 in FIG. 12, the blade body 102 on both sides of the slit 120 may bend and deform in the direction of expanding the slit width due to the reaction force acting on the blade surface 101 from the conductor 111. And the deformation | transformation of the blade main body 102 to the direction which expands a slit width will cause the fall of the contact pressure between the blade surface 101 and the conductor 111, and there existed a possibility of reducing electrical connection performance.

従って、刃面１０１がスリット状を成す圧接刃１００の場合は、狭幅化が難しく、圧接刃１００の狭幅化によってコネクタハウジングのコンパクト化を図ることが難しいという問題があった。   Therefore, in the case of the press contact blade 100 in which the blade surface 101 has a slit shape, it is difficult to reduce the width, and it is difficult to make the connector housing compact by reducing the width of the press contact blade 100.

そこで、本発明の目的は、上記課題を解消することに係り、丸型電線を端子金具の圧接刃に押圧することで丸型電線と端子金具とを導通接続させる電線と端子の接続構造であって、圧接刃の幅を狭くしても、圧接刃の変形等で電線との電気的な接続性能が低下することが無く、圧接刃の狭幅化によって圧接刃を収容するコネクタハウジングのコンパクト化を図ることのできる電線と端子の接続構造を提供することにある。   Accordingly, an object of the present invention is to solve the above-described problems, and is an electric wire-terminal connection structure in which a round electric wire and a terminal metal fitting are conductively connected by pressing the round electric wire against a press contact blade of the terminal metal fitting. Even if the width of the press contact blade is reduced, the electrical connection performance with the electric wire does not deteriorate due to deformation of the press contact blade, etc., and the connector housing that accommodates the press contact blade is made compact by narrowing the press contact blade. It is providing the connection structure of the electric wire and terminal which can plan.

本発明の前述した目的は、下記の構成により達成される。
（１）導体の外周が絶縁被覆で覆われた丸型電線と、
前記丸型電線の外周面を押し当てると前記絶縁被覆を切断して前記絶縁被覆の内側の前記導体に接触して前記導体と導通接続状態になる圧接刃を電線圧接部に備えた端子金具と、
前記電線圧接部の前記圧接刃の刃面を上方に向けて前記端子金具を保持する端子収容部と、前記端子収容部における前記圧接刃の前記刃面の上を開放して前記刃面上に前記丸型電線を挿入可能な電線挿入口と、前記電線挿入口から前記刃面上に載せられた前記丸型電線を前記刃面に押圧すると共に前記電線挿入口を塞ぐ電線押さえカバーと、を備えたコネクタハウジングと、
を備え、
前記丸型電線の下側の前記絶縁被覆を前記圧接刃に押圧して切断することで、前記端子金具と前記丸型電線とを導通接続させる電線と端子の接続構造であり、
前記圧接刃は、前記丸型電線の前記絶縁被覆を切断する前記刃面の両側に、前記丸型電線の外径と略同一の間隔を空けて互いに平行に上方に向けて起立する一対の電線押さえ片を備えたことを特徴とする電線と端子の接続構造。 The above-described object of the present invention is achieved by the following configuration.
(1) a round electric wire whose outer periphery is covered with an insulating coating;
A terminal fitting provided at a wire pressure contact portion with a pressure contact blade that presses an outer peripheral surface of the round electric wire and cuts the insulation coating to contact the conductor inside the insulation coating to be in conductive connection with the conductor; ,
A terminal housing portion that holds the terminal fitting with the blade surface of the pressure welding blade of the wire pressure welding portion facing upward, and the blade surface of the pressure welding blade in the terminal housing portion is opened on the blade surface. An electric wire insertion port into which the round electric wire can be inserted, and an electric wire press cover that presses the round electric wire placed on the blade surface from the electric wire insertion port to the blade surface and closes the electric wire insertion port. A connector housing with
With
A connection structure of an electric wire and a terminal for conducting and connecting the terminal fitting and the round electric wire by pressing the insulating coating on the lower side of the round electric wire against the press contact blade and cutting it ,
The press contact blades are a pair of electric wires that stand upwards in parallel with each other at an interval substantially the same as the outer diameter of the round electric wire on both sides of the blade surface that cuts the insulating coating of the round electric wire. A connection structure between an electric wire and a terminal, characterized by comprising a pressing piece .

（２）前記圧接刃の前記刃面が、前記丸型電線の外周にＶ字状に当たるＶ字形であることを特徴とする上記（１）に記載の電線と端子の接続構造。   (2) The wire-terminal connection structure according to (1) above, wherein the blade surface of the press-contact blade has a V shape that hits the outer periphery of the round electric wire in a V shape.

上記（１）の構成によれば、丸型電線の絶縁被覆を切断する圧接刃は、丸型電線の下側の絶縁被覆を切断して、下側から丸型電線の導体と接触するもので、刃面自体が導体の両側を挟むスリット状に形成されていた従来の圧接刃と比較すると、圧接刃を狭幅化した場合でも、導体との接触圧を低下させるような刃面の変形を防止することができる。   According to the configuration of (1) above, the press contact blade for cutting the insulating coating of the round electric wire cuts the lower insulating coating of the round electric wire and comes into contact with the conductor of the round electric wire from the lower side. Compared with the conventional press-contacting blade that is formed in a slit shape that sandwiches both sides of the conductor, the blade surface deforms the blade surface to reduce the contact pressure with the conductor even when the press-contacting blade is narrowed. Can be prevented.

従って、圧接刃の幅を狭くしても、圧接刃の変形等で電線との電気的な接続性能が低下することが無く、圧接刃の狭幅化によって圧接刃を収容するコネクタハウジングのコンパクト化を図ることができる。   Therefore, even if the width of the press contact blade is narrowed, the electrical connection performance with the electric wire does not deteriorate due to deformation of the press contact blade, etc., and the connector housing that accommodates the press contact blade is made compact by narrowing the press contact blade. Can be achieved.

加えて、上記（１）の構成によれば、刃面の両側に装備した電線押さえ片が、刃面に押圧される丸型電線が刃面の幅方向に滑ることを抑止する。そのため、刃面の形状を例えばＶ字状ではなく、一直線状にした場合でも、刃面に押圧される丸型電線が刃面の延在方向に滑ることを防止することができ、刃面による絶縁被覆の切断を円滑にすることができる。In addition, according to the structure of said (1), the electric wire holding piece equipped in the both sides of the blade surface suppresses that the round electric wire pressed by a blade surface slips in the width direction of a blade surface. Therefore, even when the shape of the blade surface is not a V-shape, for example, it is possible to prevent the round electric wire pressed against the blade surface from sliding in the extending direction of the blade surface. The insulation coating can be cut smoothly.

上記（２）の構成によれば、刃面のＶ字が、刃面に押圧される丸型電線をＶ字の中心に誘導するガイド機能を発揮するため、刃面に押圧される丸型電線が刃面の幅方向に滑ることを抑止して、刃面による絶縁被覆の切断を円滑にすることができる。  According to the configuration of (2) above, the V-shaped blade surface exhibits a guide function for guiding the round electric wire pressed against the blade surface to the center of the V-shape, and thus the round electric wire pressed against the blade surface. Can be prevented from slipping in the width direction of the blade surface, and the insulating coating can be cut smoothly by the blade surface.

本発明による電線と端子の接続構造によれば、丸型電線の絶縁被覆を切断する圧接刃は、丸型電線の下側の絶縁被覆を切断して、下側から丸型電線の導体と接触するもので、刃面自体が導体の両側を挟むスリット状に形成されていた従来の圧接刃と比較すると、圧接刃を狭幅化した場合でも、導体との接触圧を低下させるような刃面の変形を防止することができる。   According to the connection structure of the electric wire and the terminal according to the present invention, the press contact blade for cutting the insulation coating of the round electric wire cuts the lower insulation coating of the round electric wire and contacts the conductor of the round electric wire from the lower side. Compared with the conventional press-contact blade that is formed in a slit shape that sandwiches both sides of the conductor, the blade surface reduces the contact pressure with the conductor even when the press-contact blade is narrowed. Can be prevented from being deformed.

従って、圧接刃の幅を狭くしても、圧接刃の変形等で電線との電気的な接続性能が低下することが無く、圧接刃の狭幅化によって圧接刃を収容するコネクタハウジングのコンパクト化を図ることができる。   Therefore, even if the width of the press contact blade is narrowed, the electrical connection performance with the electric wire does not deteriorate due to deformation of the press contact blade, etc., and the connector housing that accommodates the press contact blade is made compact by narrowing the press contact blade. Can be achieved.

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. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

図１は本発明に係る電線と端子の接続構造の一実施形態のコネクタハウジングの側面図である。FIG. 1 is a side view of a connector housing according to an embodiment of a connection structure between electric wires and terminals according to the present invention. 図２は図１における圧接刃のＡ矢視図である。FIG. 2 is a view of the press contact blade in FIG. 図３は一実施形態のコネクタハウジング内圧接刃上に丸型電線が載置された状態の側面図である。FIG. 3 is a side view of a state in which a round electric wire is placed on the pressure contact blade in the connector housing according to the embodiment. 図４は図３における圧接刃のＢ矢視図である。4 is a B arrow view of the press contact blade in FIG. 図５は一実施形態のコネクタハウジング内の圧接刃上に載置した丸型電線を電線押さえカバーで押圧する前の状態を示す側面図である。FIG. 5 is a side view showing a state before the round electric wire placed on the press contact blade in the connector housing of the embodiment is pressed by the electric wire pressing cover. 図６は電線押さえカバーによって丸型電線をコネクタハウジング内の圧接刃に押圧して、圧接刃に丸型電線の導体を導通接続させた状態の側面図である。FIG. 6 is a side view of a state in which the round electric wire is pressed against the press contact blade in the connector housing by the electric wire holding cover, and the conductor of the round electric wire is conductively connected to the press contact blade. 図７は図６における圧接刃のＣ矢視図である。7 is a C arrow view of the press contact blade in FIG. 図８は図６のＤ矢視図で、一実施形態のコネクタハウジングの後端の電線引き出し孔部の形状の説明図である。FIG. 8 is a view taken in the direction of arrow D in FIG. 6, and is an explanatory view of the shape of the wire drawing hole at the rear end of the connector housing of one embodiment. 図９は本発明に係る圧接刃の他の実施の形態の正面図である。FIG. 9 is a front view of another embodiment of the press contact blade according to the present invention. 図１０は本発明か圧接刃の更に他の実施の形態の正面図である。FIG. 10 is a front view of still another embodiment of the present invention or the press contact blade. 図１１（ａ）及び図１１（ｂ）は従来の一般的な圧接刃の説明図である。FIG. 11A and FIG. 11B are explanatory diagrams of a conventional general press contact blade. 図１２は図１１（ａ）及び図１１（ｂ）に示した圧接刃を狭幅化した際に発生する問題の説明図である。FIG. 12 is an explanatory view of a problem that occurs when the press contact blade shown in FIGS. 11A and 11B is narrowed.

以下、本発明に係る電線と端子の接続構造の好適な実施形態について、図面を参照して詳細に説明する。   DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of an electric wire and terminal connection structure according to the invention will be described in detail with reference to the drawings.

図１〜図８は本発明に係る電線と端子の接続構造の一実施形態を示したもので、図１は本発明の一実施形態のコネクタハウジングの側面図、図２は図１における圧接刃のＡ矢視図、図３は一実施形態のコネクタハウジング内圧接刃上に丸型電線が載置された状態の側面図、図４は図３における圧接刃のＢ矢視図、図５は一実施形態のコネクタハウジング内の圧接刃上に載置した丸型電線を電線押さえカバーで押圧する前の状態を示す側面図、図６は電線押さえカバーによって丸型電線をコネクタハウジング内の圧接刃に押圧して、圧接刃に丸型電線の導体を導通接続させた状態の側面図、図７は図６における圧接刃のＣ矢視図、図８は図６のＤ矢視図で、一実施形態のコネクタハウジングの後端の電線引き出し孔部の形状の説明図である。   1 to 8 show an embodiment of a connection structure between an electric wire and a terminal according to the present invention, FIG. 1 is a side view of a connector housing according to an embodiment of the present invention, and FIG. 2 is a press contact blade in FIG. FIG. 3 is a side view of a state where a round electric wire is placed on the pressure contact blade in the connector housing of the embodiment, FIG. 4 is a view of the pressure contact blade in FIG. FIG. 6 is a side view showing a state before the round electric wire placed on the press contact blade in the connector housing of the embodiment is pressed by the wire press cover, and FIG. 6 shows the press contact blade in the connector housing by using the wire press cover. FIG. 7 is a side view of the press contact blade in FIG. 6, and FIG. 8 is a view of the D arrow in FIG. It is explanatory drawing of the shape of the electric wire extraction hole part of the rear end of the connector housing of embodiment.

この一実施形態の電線と端子の接続構造は、図３に示す丸型電線１０を、コネクタハウジング２０に収容されている端子金具３０に導通接続させるものである。   The connection structure between the electric wire and the terminal according to this embodiment is to electrically connect the round electric wire 10 shown in FIG. 3 to the terminal fitting 30 accommodated in the connector housing 20.

丸型電線１０は、図３に示すように、導体１１の外周が絶縁被覆１２で覆われた電線で、外形が丸型である。   As shown in FIG. 3, the round electric wire 10 is an electric wire in which the outer periphery of the conductor 11 is covered with an insulating coating 12, and the outer shape is round.

端子金具３０は、丸型電線１０を圧接接続する圧接端子で、金属板のプレス成形により形成される。端子金具３０は、図１にも示すように、嵌合接続部３１と、電線圧接部３２と、を備えている。   The terminal fitting 30 is a press contact terminal for press-connecting the round electric wire 10 and is formed by press forming a metal plate. As shown also in FIG. 1, the terminal fitting 30 includes a fitting connection portion 31 and a wire pressure contact portion 32.

嵌合接続部３１は、不図示の相手端子に嵌合接続する筒状構造に形成されている。電線圧接部３２は、丸型電線１０が圧接接続される部位であり、嵌合接続部３１の後端に連設されている。   The fitting connection part 31 is formed in the cylindrical structure which carries out fitting connection to the other party terminal not shown. The electric wire pressure contact portion 32 is a portion to which the round electric wire 10 is pressure connected, and is connected to the rear end of the fitting connection portion 31.

電線圧接部３２は、一枚の圧接刃３３を、起立状態に有している。圧接刃３３は、丸型電線１０の外周面を押し当てると、絶縁被覆１２を切断して絶縁被覆１２の内側の導体１１に接触し、導体１１と導通接続状態になる。   The electric wire pressure contact portion 32 has a single pressure contact blade 33 in an upright state. When the outer peripheral surface of the round electric wire 10 is pressed against the press contact blade 33, the insulation coating 12 is cut and comes into contact with the conductor 11 inside the insulation coating 12, and is brought into a conductive connection state with the conductor 11.

本実施形態の圧接刃３３は、図２に示すように、一枚の突片状で、絶縁被覆１２を切断する刃面３３ａが、丸型電線１０の外周にＶ字状に当たるＶ字形になっている。   As shown in FIG. 2, the press contact blade 33 of the present embodiment is in the shape of a single protrusion, and the blade surface 33 a for cutting the insulating coating 12 has a V shape that hits the outer periphery of the round electric wire 10 in a V shape. ing.

コネクタハウジング２０は、端子収容部２１と、電線挿入口２２と、電線押さえカバー２３と、を備える。   The connector housing 20 includes a terminal accommodating portion 21, an electric wire insertion port 22, and an electric wire pressing cover 23.

端子収容部２１は、電線圧接部３２の圧接刃３３の刃面３３ａを上方に向けた姿勢で、端子金具３０を保持する。   The terminal accommodating portion 21 holds the terminal fitting 30 in a posture in which the blade surface 33a of the press contact blade 33 of the electric wire press contact portion 32 faces upward.

電線挿入口２２は、端子収容部２１における圧接刃３３の刃面３３ａの上を開放して、刃面３３ａ上に丸型電線１０を挿入可能な開放部である。この電線挿入口２２は、図１において、矢印Ｌの範囲を、開放している。   The electric wire insertion port 22 is an open portion that allows the round electric wire 10 to be inserted on the blade surface 33a by opening the blade surface 33a of the press contact blade 33 in the terminal accommodating portion 21. The wire insertion port 22 opens the range of the arrow L in FIG.

電線押さえカバー２３は、電線挿入口２２に着脱可能なカバーである。電線押さえカバー２３は、電線挿入口２２に装着されることで、電線挿入口２２から刃面３３ａ上に載せられた丸型電線１０を刃面３３ａに押圧すると共に、電線挿入口２２を塞ぐ。   The wire holding cover 23 is a cover that can be attached to and detached from the wire insertion port 22. The electric wire holding cover 23 is attached to the electric wire insertion port 22, thereby pressing the round electric wire 10 placed on the blade surface 33 a from the electric wire insertion port 22 against the blade surface 33 a and closing the electric wire insertion port 22.

電線押さえカバー２３は、その周壁に装備した係合手段２３ａを、コネクタハウジング２０の本体側に装備された係合部２５（図５参照）に係合させることで、電線挿入口２２を塞いだ状態に固定される。   The wire holding cover 23 closes the wire insertion port 22 by engaging the engaging means 23a provided on the peripheral wall thereof with the engaging portion 25 (see FIG. 5) provided on the main body side of the connector housing 20. Fixed to state.

更に、図８に示すように、本実施形態におけるコネクタハウジング２０は、丸型電線１０の引き出し口となる電線挿入口２２の端部の電線挿通部２６に、一対の電線押さえ部２６ａを備えている。一対の電線押さえ部２６ａは、挿通する丸型電線１０をその両側から挟んで、丸型電線１０の幅方向（図８の矢印Ｘ方向）への移動を規制する。   Further, as shown in FIG. 8, the connector housing 20 according to the present embodiment includes a pair of wire pressing portions 26 a at the wire insertion portion 26 at the end of the wire insertion port 22 that becomes a drawing port of the round electric wire 10. Yes. A pair of electric wire holding | suppressing part 26a pinches | interposes the round shape electric wire 10 to penetrate from the both sides, and controls the movement to the width direction (arrow X direction of FIG. 8) of the round shape electric wire 10. FIG.

一実施形態の電線と端子の接続構造は、図６及び図７に示すように、電線押さえカバー２３によって丸型電線１０の下側の絶縁被覆１２を圧接刃３３に押圧して切断することで、端子金具３０と丸型電線１０とを導通接続させる。   As shown in FIGS. 6 and 7, the connection structure between the electric wire and the terminal according to the embodiment is formed by pressing the insulating coating 12 on the lower side of the round electric wire 10 against the press contact blade 33 and cutting it by the electric wire holding cover 23. The terminal fitting 30 and the round electric wire 10 are electrically connected.

以上に説明した一実施形態の電線と端子の接続構造では、丸型電線１０の絶縁被覆１２を切断する圧接刃３３は、丸型電線１０の下側の絶縁被覆１２を切断して、下側から丸型電線１０の導体１１と接触するもので、刃面自体が導体の両側を挟むスリット状に形成されていた従来の圧接刃（図１１に示した圧接刃１００）と比較すると、圧接刃３３を狭幅化した場合でも、導体１１との接触圧を低下させるような刃面３３ａの変形を防止することができる。   In the electric wire and terminal connection structure according to the embodiment described above, the press contact blade 33 that cuts the insulating coating 12 of the round electric wire 10 cuts the lower insulating coating 12 of the round electric wire 10, Compared with the conventional press contact blade (the press contact blade 100 shown in FIG. 11) in which the blade surface itself contacts the conductor 11 of the round electric wire 10 and the blade surface itself is formed in a slit shape sandwiching both sides of the conductor. Even when the width of 33 is reduced, it is possible to prevent the blade surface 33a from being deformed so as to reduce the contact pressure with the conductor 11.

従って、図７に示す圧接刃３３の幅Ｗを狭くしても、圧接刃３３の変形等で電線との電気的な接続性能が低下することが無く、圧接刃３３の狭幅化によって圧接刃３３を収容するコネクタハウジング２０のコンパクト化を図ることができる。   Therefore, even if the width W of the press contact blade 33 shown in FIG. 7 is narrowed, the electrical connection performance with the electric wire does not deteriorate due to deformation of the press contact blade 33 or the like. The connector housing 20 that accommodates the connector 33 can be made compact.

また、以上に説明した一実施形態の電線と端子の接続構造では、刃面３３ａのＶ字形が、刃面３３ａに押圧される丸型電線１０をＶ字形の中心に誘導するガイド機能を発揮するため、刃面３３ａに押圧される丸型電線１０が刃面３３ａの幅方向に滑ることを抑止して、刃面３３ａによる絶縁被覆１２の切断を円滑にすることができる。   In the electric wire and terminal connection structure according to the embodiment described above, the V shape of the blade surface 33a exhibits a guide function for guiding the round electric wire 10 pressed against the blade surface 33a to the center of the V shape. Therefore, it is possible to suppress the round electric wire 10 pressed against the blade surface 33a from sliding in the width direction of the blade surface 33a, and to smoothly cut the insulating coating 12 by the blade surface 33a.

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。   In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

例えば、本発明の電線と端子の接続構造において使用する圧接刃の刃面の具体的な形状は、一実施形態に示したＶ字形に限らない。本発明の場合、圧接刃の刃面は、導体を挟むスリット状とならなければ良く、図９に示すように刃面３３ａを一直線上に設定することも可能である。   For example, the specific shape of the blade surface of the press contact blade used in the electric wire and terminal connection structure of the present invention is not limited to the V shape shown in the embodiment. In the case of the present invention, the blade surface of the press contact blade is not required to have a slit shape sandwiching the conductor, and the blade surface 33a can be set in a straight line as shown in FIG.

更に、図１０に示すように、圧接刃３３は、丸型電線１０の絶縁被覆１２を切断する刃面３３ａの両側に、丸型電線１０の両側を位置決めする電線押さえ片３３ｂを備えた構造としても良い。   Furthermore, as shown in FIG. 10, the press contact blade 33 has a structure in which a wire pressing piece 33 b that positions both sides of the round electric wire 10 is provided on both sides of the blade surface 33 a that cuts the insulating coating 12 of the round electric wire 10. Also good.

図１０に示した構造の圧接刃３３を使用する場合には、刃面３３ａの両側に装備した電線押さえ片３３ｂが、刃面３３ａに押圧される丸型電線１０が刃面３３ａの幅方向に滑ることを抑止する。そのため、刃面３３ａの形状を例えばＶ字状ではなく、一直線状にした場合でも、刃面３３ａに押圧される丸型電線１０が刃面３３ａの延在方向に滑ることを防止することができ、刃面３３ａによる絶縁被覆１２の切断を円滑にすることができる。   When the press contact blade 33 having the structure shown in FIG. 10 is used, the electric wire pressing pieces 33b provided on both sides of the blade surface 33a are arranged so that the round electric wire 10 pressed against the blade surface 33a is in the width direction of the blade surface 33a. Suppress slipping. Therefore, even when the shape of the blade surface 33a is not a V shape, for example, it is possible to prevent the round electric wire 10 pressed against the blade surface 33a from sliding in the extending direction of the blade surface 33a. The insulating coating 12 can be smoothly cut by the blade surface 33a.

ここで、上述した本発明に係る電線と端子の接続構造の実施形態の特徴をそれぞれ以下［１］〜［３］に簡潔に纏めて列記する。   Here, the features of the embodiment of the electric wire and terminal connection structure according to the present invention described above are summarized and listed in the following [1] to [3], respectively.

［１］ 導体（１１）の外周が絶縁被覆（１２）で覆われた丸型電線（１０）と、
前記丸型電線（１０）の外周面を押し当てると前記絶縁被覆（１２）を切断して前記絶縁被覆（１２）の内側の前記導体（１１）に接触して前記導体（１１）と導通接続状態になる圧接刃（３３）を電線圧接部（３２）に備えた端子金具（３０）と、
前記電線圧接部（３２）の前記圧接刃（３３）の刃面（３３ａ）を上方に向けて前記端子金具（３０）を保持する端子収容部（２１）と、前記端子収容部（２１）における前記圧接刃（３３）の前記刃面（３３ａ）の上を開放して前記刃面（３３ａ）上に前記丸型電線（１０）を挿入可能な電線挿入口（２２）と、前記電線挿入口（２２）から前記刃面（３３ａ）上に載せられた前記丸型電線（１０）を前記刃面（３３ａ）に押圧すると共に前記電線挿入口（２２）を塞ぐ電線押さえカバー（２３）と、を備えたコネクタハウジング（２０）と、
を備え、
前記丸型電線（１０）の下側の前記絶縁被覆（１２）を前記圧接刃（３３）に押圧して切断することで、前記端子金具（３０）と前記丸型電線（１０）とを導通接続させる電線と端子の接続構造。 [1] A round electric wire (10) in which the outer periphery of the conductor (11) is covered with an insulating coating (12);
When the outer peripheral surface of the round electric wire (10) is pressed, the insulating coating (12) is cut and contacted with the conductor (11) inside the insulating coating (12) to be electrically connected to the conductor (11). A terminal fitting (30) provided with a pressure welding blade (33) to be in a state in the wire pressure welding part (32);
A terminal housing portion (21) for holding the terminal fitting (30) with the blade surface (33a) of the pressure welding blade (33) of the wire pressure welding portion (32) facing upward, and the terminal housing portion (21). An electric wire insertion port (22) capable of opening the blade surface (33a) of the press contact blade (33) and inserting the round electric wire (10) onto the blade surface (33a), and the electric wire insertion port An electric wire pressing cover (23) that presses the round electric wire (10) placed on the blade surface (33a) from (22) to the blade surface (33a) and closes the electric wire insertion port (22); A connector housing (20) comprising:
With
The terminal metal fitting (30) and the round electric wire (10) are electrically connected by pressing the insulation coating (12) on the lower side of the round electric wire (10) against the press contact blade (33). Connection structure of wires and terminals to be connected.

［２］ 前記圧接刃（３３）の前記刃面（３３ａ）が、前記丸型電線（１０）の外周にＶ字状に当たるＶ字形であることを特徴とする上記［１］に記載の電線と端子の接続構造。   [2] The electric wire according to [1], wherein the blade surface (33a) of the press contact blade (33) has a V shape that hits the outer periphery of the round electric wire (10) in a V shape. Terminal connection structure.

［３］ 前記圧接刃（３３）は、前記丸型電線（１０）の前記絶縁被覆（１２）を切断する前記刃面（３３ａ）部の両側に、前記丸型電線（１０）の両側を位置決めする電線押さえ片（３３ｂ）を備えたことを特徴とする上記［１］又は［２］に記載の電線と端子の接続構造。   [3] The press contact blade (33) positions both sides of the round electric wire (10) on both sides of the blade surface (33a) portion for cutting the insulating coating (12) of the round electric wire (10). The wire and terminal connection structure according to the above [1] or [2], wherein the wire holding piece (33b) is provided.

１０ 丸型電線
１１ 導体
１２ 絶縁被覆
２０ コネクタハウジング
２１ 端子収容部
２２ 電線挿入口
２３ 電線押さえカバー
３０ 端子金具
３３ 圧接刃
３３ａ 刃面
３３ｂ 電線押さえ片 DESCRIPTION OF SYMBOLS 10 Round shape electric wire 11 Conductor 12 Insulation coating 20 Connector housing 21 Terminal accommodating part 22 Electric wire insertion port 23 Electric wire holding cover 30 Terminal metal fitting 33 Pressure contact blade 33a Blade surface 33b Electric wire holding piece

Claims (2)

導体の外周が絶縁被覆で覆われた丸型電線と、
前記丸型電線の外周面を押し当てると前記絶縁被覆を切断して前記絶縁被覆の内側の前記導体に接触して前記導体と導通接続状態になる圧接刃を電線圧接部に備えた端子金具と、
前記電線圧接部の前記圧接刃の刃面を上方に向けて前記端子金具を保持する端子収容部と、前記端子収容部における前記圧接刃の前記刃面の上を開放して前記刃面上に前記丸型電線を挿入可能な電線挿入口と、前記電線挿入口から前記刃面上に載せられた前記丸型電線を前記刃面に押圧すると共に前記電線挿入口を塞ぐ電線押さえカバーと、を備えたコネクタハウジングと、
を備え、
前記丸型電線の下側の前記絶縁被覆を前記圧接刃に押圧して切断することで、前記端子金具と前記丸型電線とを導通接続させる電線と端子の接続構造であり、
前記圧接刃は、前記丸型電線の前記絶縁被覆を切断する前記刃面の両側に、前記丸型電線の外径と略同一の間隔を空けて互いに平行に上方に向けて起立する一対の電線押さえ片を備えたことを特徴とする電線と端子の接続構造。 A round electric wire whose outer periphery is covered with an insulating coating;
A terminal fitting provided at a wire pressure contact portion with a pressure contact blade that presses an outer peripheral surface of the round electric wire and cuts the insulation coating to contact the conductor inside the insulation coating to be in conductive connection with the conductor; ,
A terminal housing portion that holds the terminal fitting with the blade surface of the pressure welding blade of the wire pressure welding portion facing upward, and the blade surface of the pressure welding blade in the terminal housing portion is opened on the blade surface. An electric wire insertion port into which the round electric wire can be inserted, and an electric wire press cover that presses the round electric wire placed on the blade surface from the electric wire insertion port to the blade surface and closes the electric wire insertion port. A connector housing with
With
A connection structure of an electric wire and a terminal for conducting and connecting the terminal fitting and the round electric wire by pressing the insulating coating on the lower side of the round electric wire against the press contact blade and cutting it ,
The press contact blades are a pair of electric wires that stand upwards in parallel with each other at an interval substantially the same as the outer diameter of the round electric wire on both sides of the blade surface that cuts the insulating coating of the round electric wire. A connection structure between an electric wire and a terminal, characterized by comprising a pressing piece . 前記圧接刃の前記刃面が、前記丸型電線の外周にＶ字状に当たるＶ字形であることを特徴とする請求項１に記載の電線と端子の接続構造。   The wire-terminal connection structure according to claim 1, wherein the blade surface of the press-contact blade has a V shape that hits the outer periphery of the round electric wire in a V shape.
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