JP6422522B2 - Wire connection structure and wire connection method - Google Patents

Wire connection structure and wire connection method Download PDF

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JP6422522B2
JP6422522B2 JP2017060873A JP2017060873A JP6422522B2 JP 6422522 B2 JP6422522 B2 JP 6422522B2 JP 2017060873 A JP2017060873 A JP 2017060873A JP 2017060873 A JP2017060873 A JP 2017060873A JP 6422522 B2 JP6422522 B2 JP 6422522B2
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diameter
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wire
electric wire
conductor
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JP2018163821A (en
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佐々木 直人
直人 佐々木
章宏 榊
章宏 榊
章吾 冨田
章吾 冨田
小林 浩
浩 小林
健 美才治
健 美才治
博 坂井
博 坂井
賢一郎 菊田
賢一郎 菊田
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THE FURUKAW ELECTRIC CO., LTD.
Toyota Motor Corp
Furukawa Automotive Systems Inc
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THE FURUKAW ELECTRIC CO., LTD.
Toyota Motor Corp
Furukawa Automotive Systems Inc
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Description

本発明は、主として、径が異なる2つの電線が接続スリーブによって電気的かつ機械的に接続された電線接続構造に関する。   The present invention mainly relates to an electric wire connection structure in which two electric wires having different diameters are electrically and mechanically connected by a connection sleeve.

自動車のワイヤハーネスにおいて、コネクタの端子に電気的導通の不具合が発生した場合、通常は以下のようにしてリペア作業が行われる。即ち、作業者は、先ず不具合が発生した端子をコネクタハウジングから取り外し、当該端子に繋がっている電線を中途部で切断して、端子と電線とを除去する。次に、作業者は、端子が圧着されたリペアワイヤの電線と、切断された電線の残りの部分とを、接続スリーブを用いて圧着する。最後に、リペアワイヤの端子がコネクタハウジングに装着され、リペア作業が完了する。特許文献1は、この種のリペア作業に用いる接続スリーブを開示する。   In the case of an electrical continuity failure in a connector terminal in an automobile wire harness, a repair operation is usually performed as follows. That is, the operator first removes the terminal in which the problem has occurred from the connector housing, cuts the electric wire connected to the terminal in the middle, and removes the terminal and the electric wire. Next, the operator crimps the repair wire with the terminal crimped thereto and the remaining portion of the cut wire using the connection sleeve. Finally, the repair wire terminal is attached to the connector housing, and the repair work is completed. Patent Document 1 discloses a connection sleeve used for this type of repair work.

特許文献1の接続スリーブには、縮径部によって軸方向の一側と他側に仕切られた2つの電線圧着部が形成されている。一方の電線圧着部では、切断された残りの電線の導体部が圧着される。他方の電線圧着部では、リペアワイヤの電線の導体部が圧着される。   In the connection sleeve of Patent Document 1, two wire crimping portions are formed which are partitioned into one side and the other side in the axial direction by a reduced diameter portion. In one electric wire crimping | compression-bonding part, the conductor part of the remaining cut | disconnected electric wire is crimped | bonded. In the other wire crimping portion, the conductor portion of the repair wire is crimped.

特開2010−146739号公報JP 2010-146739

しかし、特許文献1の電線接続構造では、径が小さい電線を用いる場合、導体部が強い力で圧着されにくくなるため、電気的接続の安定性が低くなったり、機械的接続の強度が低くなったりする。また、特許文献1には、径が異なる電線同士を接続する場合に適した構成について記載されていない。   However, in the electric wire connection structure of Patent Document 1, when using an electric wire with a small diameter, the conductor portion is difficult to be crimped with a strong force, so that the stability of the electric connection is lowered and the strength of the mechanical connection is lowered. Or Further, Patent Document 1 does not describe a configuration suitable for connecting electric wires having different diameters.

本発明は以上の事情に鑑みてされたものであり、その主要な目的は、径が異なる電線同士が接続スリーブにより接続された電線接続構造において、電気的接続及び機械的接続が良好となる構成を提供することにある。   The present invention has been made in view of the above circumstances, and its main purpose is a configuration in which electrical connection and mechanical connection are good in a wire connection structure in which wires having different diameters are connected by a connection sleeve. Is to provide.

課題を解決するための手段及び効果Means and effects for solving the problems

本発明の解決しようとする課題は以上の如くであり、次にこの課題を解決するための手段とその効果を説明する。   The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

本発明の第1の観点によれば、以下の構成の電線接続構造が提供される。即ち、電線接続構造では、小径電線と、前記小径電線よりも径が大きい大径電線と、の両方が筒状の接続スリーブに挿入された状態で圧着されることで、前記小径電線と前記大径電線が電気的かつ機械的に接続される。前記接続スリーブには、前記小径電線が挿入される小径電線挿入口が軸方向の一端に形成されるとともに、前記大径電線が挿入される大径電線挿入口が軸方向の他端に形成されている。前記接続スリーブは、小径被覆圧着部と、導体圧着部と、ストッパと、を備える。前記小径被覆圧着部は、軸方向の前記小径電線挿入口寄りに配置されており、前記小径電線の被覆部を圧着している。前記導体圧着部は、軸方向の前記大径電線挿入口寄りに配置されており、前記小径電線の導体部と前記大径電線の導体部を重ねた状態で圧着している。前記ストッパは、前記小径被覆圧着部と前記導体圧着部の間に配置されており、前記小径電線の少なくとも前記導体部を挿通させており、前記大径電線が前記小径被覆圧着部に到達することを防止する。   According to the 1st viewpoint of this invention, the electric wire connection structure of the following structures is provided. That is, in the electric wire connection structure, both the small-diameter electric wire and the large-diameter electric wire having a diameter larger than that of the small-diameter electric wire are crimped in a state where the small-diameter electric wire is inserted into the cylindrical connection sleeve. Diameter wires are connected electrically and mechanically. In the connection sleeve, a small-diameter wire insertion port into which the small-diameter wire is inserted is formed at one end in the axial direction, and a large-diameter wire insertion port into which the large-diameter wire is inserted is formed at the other end in the axial direction. ing. The connection sleeve includes a small-diameter covering crimping portion, a conductor crimping portion, and a stopper. The small-diameter covered crimping portion is disposed near the small-diameter electric wire insertion port in the axial direction, and crimps the small-diameter electric wire covering portion. The conductor crimping portion is disposed near the large-diameter wire insertion port in the axial direction, and crimps in a state where the conductor portion of the small-diameter wire and the conductor portion of the large-diameter wire are overlapped. The stopper is disposed between the small-diameter coated crimping portion and the conductor crimping portion, passes through at least the conductor portion of the small-diameter electric wire, and the large-diameter electric wire reaches the small-diameter coated crimping portion. To prevent.

これにより、小径電線の導体部と大径電線の導体部とを重ねて圧着しているため、個別に圧着する場合と比較して断面積が増加するので、強い力で圧着がされ易くなり、良好な電気的接続及び機械的接続を実現できる。また、小径電線の被覆部が更に圧着されるため、小径電線の機械的接続を更に良好(高強度)にすることができる。   Thereby, since the conductor part of the small-diameter electric wire and the conductor part of the large-diameter electric wire are overlapped and crimped, the cross-sectional area increases compared to the case of individually crimping, so that it is easy to crimp with a strong force, Good electrical and mechanical connections can be realized. Moreover, since the coating | coated part of a small diameter electric wire is further crimped | bonded, the mechanical connection of a small diameter electric wire can be made further favorable (high intensity | strength).

前記の電線接続構造においては、前記接続スリーブ内において、前記ストッパより前記大径電線挿入口寄りの部分には、前記小径電線のうち導体部のみが位置していることが好ましい。   In the electric wire connection structure, it is preferable that only the conductor portion of the small-diameter electric wire is located in the connection sleeve near the large-diameter electric wire insertion opening than the stopper.

これにより、導体圧着部において小径電線の導体部のみを圧着できるので、更に良好な電気的接続及び機械的接続を実現できる。   Thereby, since only the conductor part of a small diameter electric wire can be crimped | bonded in a conductor crimping | compression-bonding part, still more favorable electrical connection and mechanical connection are realizable.

前記の電線接続構造においては、前記小径電線の導体部は、前記大径電線挿入口から外側へ突出していることが好ましい。   In the electric wire connection structure, it is preferable that the conductor portion of the small-diameter electric wire protrudes outward from the large-diameter electric wire insertion port.

これにより、小径電線の導体部が導体圧着部を通過していることを確認したうえで圧着を行うことができる。従って、良好な電気的接続及び機械的接続を確実に実現できる。   Thereby, after confirming that the conductor part of a small diameter electric wire has passed the conductor crimping | compression-bonding part, it can crimp. Therefore, good electrical connection and mechanical connection can be reliably realized.

前記の電線接続構造においては、前記大径電線の導体部は、前記ストッパに接触しているとともに、前記接続スリーブの前記大径電線挿入口の外部にも位置していることが好ましい。   In the wire connection structure, it is preferable that the conductor portion of the large-diameter wire is in contact with the stopper and is also located outside the large-diameter wire insertion port of the connection sleeve.

これにより、大径電線挿入口からストッパまで大径電線の導体部が位置していることを確認したうえで圧着を行うことができる。従って、良好な電気的接続及び機械的接続を確実に実現できる。   Thereby, it can crimp, after confirming that the conductor part of a large diameter electric wire is located from a large diameter electric wire insertion port to a stopper. Therefore, good electrical connection and mechanical connection can be reliably realized.

前記の電線接続構造においては、以下の構成とすることが好ましい。即ち、前記導体圧着部を前記接続スリーブの軸方向に垂直な面で切断した断面において、前記小径電線の導体部は、一部が接続スリーブの内壁に接触しているとともに、前記小径電線の導体部の前記一部以外は大径電線の導体部に覆われている。   In the said electric wire connection structure, it is preferable to set it as the following structures. That is, in the cross section obtained by cutting the conductor crimping portion along a plane perpendicular to the axial direction of the connection sleeve, the conductor portion of the small-diameter electric wire partially contacts the inner wall of the connection sleeve, and the conductor of the small-diameter electric wire The part other than the part is covered with the conductor part of the large-diameter electric wire.

これにより、小径電線の導体部の周囲を接続スリーブ又は大径電線の導体部で覆うことができるので、小径電線の機械的接続を更に良好(高強度)にすることができる。   Thereby, since the circumference | surroundings of the conductor part of a small diameter electric wire can be covered by the connection sleeve or the conductor part of a large diameter electric wire, the mechanical connection of a small diameter electric wire can be made still more favorable (high intensity | strength).

前記の電線接続構造においては、前記小径電線挿入口と、前記小径電線の被覆部と、の間に隙間が形成されていることが好ましい。   In the wire connection structure, a gap is preferably formed between the small-diameter wire insertion port and the small-diameter wire covering portion.

これにより、小径電線に軸方向以外の引張り力が掛かった場合であっても、小径電線が動くことで小径電線に掛かる負荷を軽減できる。   Thereby, even if it is a case where tensile force other than an axial direction is applied to a small diameter electric wire, the load concerning a small diameter electric wire can be reduced because a small diameter electric wire moves.

前記の電線接続構造においては、前記小径電線挿入口から前記大径電線挿入口まで前記接続スリーブの外周面を隙間なく覆うように配置されるチューブを備えることが好ましい。   The wire connection structure preferably includes a tube disposed so as to cover the outer peripheral surface of the connection sleeve without any gap from the small-diameter wire insertion port to the large-diameter wire insertion port.

これにより、防水性を有する電線接続構造を実現できる。また、電線接続構造を外力から保護することができる。   Thereby, the electric wire connection structure which has waterproofness is realizable. In addition, the wire connection structure can be protected from external force.

前記の電線接続構造においては、前記小径電線挿入口に挿入される前記小径電線、及び、前記大径電線挿入口に挿入される前記大径電線の少なくとも一方が、複数本であることが好ましい。   In the wire connection structure, it is preferable that at least one of the small-diameter wire inserted into the small-diameter wire insertion port and the large-diameter wire inserted into the large-diameter wire insertion port is a plurality.

これにより、様々なリペア作業において上記の電線接続構造を使用できる。   Thereby, said electric wire connection structure can be used in various repair work.

本発明の第2の観点によれば、以下の電線接続方法が提供される。この電線接続方法は、小径電線挿入工程と、小径被覆圧着工程と、大径電線挿入工程と、導体圧着工程と、を含む。前記小径電線挿入工程では、前記接続スリーブの軸方向の一側に形成された小径電線挿入口から前記小径電線を挿入し、少なくとも当該小径電線の導体部を前記ストッパよりも挿入方向奥側に位置させる。前記小径被覆圧着工程では、前記接続スリーブの小径被覆圧着空間に位置する前記小径電線の被覆部を圧着する。前記大径電線挿入工程では、前記接続スリーブの軸方向の他側に形成された大径電線挿入口から前記大径電線を挿入するとともに、前記ストッパまで前記大径電線を位置させる。前記導体圧着工程では、前記接続スリーブの導体圧着空間に位置する、前記小径電線の導体部と前記大径電線の導体部とを圧着する。   According to the 2nd viewpoint of this invention, the following electric wire connection methods are provided. This electric wire connection method includes a small-diameter wire insertion step, a small-diameter covering and crimping step, a large-diameter wire insertion step, and a conductor crimping step. In the small-diameter electric wire insertion step, the small-diameter electric wire is inserted from a small-diameter electric wire insertion port formed on one side in the axial direction of the connection sleeve, and at least the conductor portion of the small-diameter electric wire is positioned on the far side in the insertion direction from the stopper. Let In the small diameter covering and crimping step, the covering portion of the small diameter electric wire located in the small diameter covering and crimping space of the connection sleeve is crimped. In the large-diameter wire insertion step, the large-diameter wire is inserted from a large-diameter wire insertion port formed on the other axial side of the connection sleeve, and the large-diameter wire is positioned up to the stopper. In the conductor crimping step, the conductor portion of the small-diameter electric wire and the conductor portion of the large-diameter electric wire located in the conductor crimping space of the connection sleeve are crimped.

これにより、小径電線の導体部と大径電線の導体部とを重ねて圧着しているため、個別に圧着する場合と比較して断面積が増加するので、強い力で圧着がされ易くなり、良好な電気的接続及び機械的接続を実現できる。また、小径電線の被覆部が更に圧着されるため、小径電線の機械的接続を更に良好(高強度)にすることができる。   Thereby, since the conductor part of the small-diameter electric wire and the conductor part of the large-diameter electric wire are overlapped and crimped, the cross-sectional area increases compared to the case of individually crimping, so that it is easy to crimp with a strong force, Good electrical and mechanical connections can be realized. Moreover, since the coating | coated part of a small diameter electric wire is further crimped | bonded, the mechanical connection of a small diameter electric wire can be made further favorable (high intensity | strength).

本発明の一実施形態に係る電線接続構造の斜視図。The perspective view of the electric wire connection structure which concerns on one Embodiment of this invention. 電線接続構造を軸方向に平行な面で切った断面図。Sectional drawing which cut the electric wire connection structure by the surface parallel to an axial direction. 電線接続構造を軸方向に垂直な面で切った断面図(図2のA−A断面図)。Sectional drawing which cut the electric wire connection structure by the surface perpendicular | vertical to an axial direction (AA sectional drawing of FIG. 2). 小径電線挿入工程を示す斜視図。The perspective view which shows a small diameter electric wire insertion process. 小径被覆圧着工程を示す斜視図。The perspective view which shows a small diameter covering pressure bonding process. 大径電線挿入工程を示す斜視図。The perspective view which shows a large diameter electric wire insertion process. 導体圧着工程を示す斜視図。The perspective view which shows a conductor crimping | compression-bonding process. チューブを備える変形例に係る電線接続構造を軸方向に平行な面で切った断面図。Sectional drawing which cut the electric wire connection structure which concerns on the modification provided with a tube by the surface parallel to an axial direction.

次に、図面を参照して本発明の実施の形態を説明する。図1は、電線接続構造1の斜視図である。図2は電線接続構造1を軸方向に平行な面で切った断面図である。図3は、電線接続構造1を軸方向に垂直な面で切った断面図(図2のA−A断面図)である。なお、以下の説明では、位置関係、大きさ、又は形状等を説明する用語は、その用語の意味が完全に成立している状態だけでなく、その用語の意味が略成立している状態も含むものとする。   Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of the wire connection structure 1. FIG. 2 is a cross-sectional view of the wire connection structure 1 cut along a plane parallel to the axial direction. FIG. 3 is a cross-sectional view (cross-sectional view taken along line AA in FIG. 2) of the wire connection structure 1 taken along a plane perpendicular to the axial direction. In the following description, terms describing the positional relationship, size, shape, etc. are not only in a state where the meaning of the term is completely established, but also in a state where the meaning of the term is substantially established. Shall be included.

図1に示す電線接続構造1は、自動車に配置される電線に対して、本実施形態のリペア作業を行うことで作成される。リペア作業とは、不具合が発生した端子をコネクタハウジングから取り外し、当該端子に繋がっている小径電線30を中途部で切断して、端子と小径電線30とを除去する。次に、作業者は、端子が圧着されたリペアワイヤである大径電線40と、切断された小径電線30の残りの部分とを、接続スリーブ10を用いて圧着する。最後に、大径電線40に繋がっている端子がコネクタハウジングに装着され、リペア作業が完了する。なお、リペアワイヤとして用いられる電線の方が径が小さくても良い。   The wire connection structure 1 shown in FIG. 1 is created by performing the repair work of this embodiment with respect to the electric wire arrange | positioned at a motor vehicle. The repair work is to remove the terminal and the small-diameter electric wire 30 by removing the terminal where the trouble has occurred from the connector housing and cutting the small-diameter electric wire 30 connected to the terminal in the middle. Next, the operator uses the connection sleeve 10 to crimp the large-diameter electric wire 40 that is a repair wire with the terminal crimped thereto and the remaining portion of the cut small-diameter electric wire 30. Finally, the terminal connected to the large-diameter electric wire 40 is attached to the connector housing, and the repair work is completed. In addition, the diameter of the electric wire used as a repair wire may be smaller.

リペア作業に用いられる小径電線30は、図2等に示すように、導体部31と、導体部31を覆う被覆部32と、から構成されている。被覆部32は、導体部31の全てを覆っている訳ではなく、軸方向の端部においては、導体部31が露出している。なお、導体部31は、実際には複数本の導体線から構成されているが、図面では簡略化して記載する。また、小径電線30は、相対的にもう一方の電線(大径電線40)よりも小径の(直径が短い、断面積が小さい)電線である。小径電線30の導体部31の断面積は例えば0.1mm2である。 As shown in FIG. 2 and the like, the small-diameter electric wire 30 used for the repair work includes a conductor portion 31 and a covering portion 32 that covers the conductor portion 31. The covering portion 32 does not cover the entire conductor portion 31, and the conductor portion 31 is exposed at the end portion in the axial direction. In addition, although the conductor part 31 is actually comprised from the several conductor wire, it simplifies and describes in drawing. The small-diameter electric wire 30 is an electric wire having a smaller diameter (shorter diameter and smaller cross-sectional area) than the other electric wire (large-diameter electric wire 40). The cross-sectional area of the conductor portion 31 of the small-diameter electric wire 30 is, for example, 0.1 mm 2 .

リペア作業に用いられる大径電線40は、小径電線30と同様に、導体部41と、導体部41を覆う被覆部42と、から構成されている。被覆部42は、導体部41の全てを覆っている訳ではなく、軸方向の端部においては、導体部41が露出している。なお、導体部41は、実際には複数本の導体線から構成されているが、図面では簡略化して記載する。また、大径電線40は、相対的にもう一方の電線(小径電線30)よりも大径の(直径が長い、断面積が大きい)電線である。即ち、リペア作業では、第1電線(小径電線)と、第1電線よりも径の大きい第2電線(大径電線)と、が用いられる。大径電線40の導体部41の断面積は、例えば0.5mm2である。 Similar to the small-diameter electric wire 30, the large-diameter electric wire 40 used for the repair work includes a conductor portion 41 and a covering portion 42 that covers the conductor portion 41. The covering portion 42 does not cover the entire conductor portion 41, and the conductor portion 41 is exposed at the end portion in the axial direction. In addition, although the conductor part 41 is actually comprised from the several conductor wire, it simplifies and describes in drawing. The large-diameter wire 40 is a wire having a larger diameter (longer diameter and larger cross-sectional area) than the other wire (small-diameter wire 30). That is, in the repair work, the first electric wire (small-diameter electric wire) and the second electric wire (large-diameter electric wire) having a diameter larger than that of the first electric wire are used. The cross-sectional area of the conductor portion 41 of the large-diameter electric wire 40 is, for example, 0.5 mm 2 .

図1に示すように、接続スリーブ10は、円筒状の部材である。接続スリーブ10の軸方向の一端には、小径電線挿入口11が形成されている。小径電線挿入口11は、リペア作業を行う際に小径電線30を挿入する側の開口部である。接続スリーブ10の軸方向の他端には、大径電線挿入口12が形成されている。大径電線挿入口12は、リペア作業を行う際に大径電線40を挿入する側の開口部である。   As shown in FIG. 1, the connection sleeve 10 is a cylindrical member. A small-diameter wire insertion port 11 is formed at one end of the connection sleeve 10 in the axial direction. The small-diameter wire insertion port 11 is an opening on the side where the small-diameter wire 30 is inserted when performing repair work. A large-diameter wire insertion port 12 is formed at the other end in the axial direction of the connection sleeve 10. The large-diameter wire insertion port 12 is an opening on the side where the large-diameter wire 40 is inserted when performing repair work.

また、図1及び図2に示すように、接続スリーブ10は、ストッパ13と、小径被覆圧着部14と、導体圧着部15と、を備える。   As shown in FIGS. 1 and 2, the connection sleeve 10 includes a stopper 13, a small-diameter covering crimping portion 14, and a conductor crimping portion 15.

ストッパ13は、接続スリーブ10の内部であって、軸方向の中央に形成されている。ストッパ13は、図2に示すように、接続スリーブ10の内部の空間の一部を塞ぐように形成されている。ストッパ13は、小径電線30及び大径電線40の挿入量を適切にするために機能する。具体的には、ストッパ13が接続スリーブ10の内部の空間の一部を塞ぐことで形成される隙間をストッパ隙間と称したときに、このストッパ隙間は、小径電線30の導体部31が挿通できる形状、かつ、小径電線30の導体部31及び大径電線40の導体部41が挿通できない形状となっている。つまり、軸方向に垂直な面で切った断面において、導体部31はストッパ隙間内に収まる形状であるが、被覆部32と導体部41はストッパ隙間内に収まらずストッパ13にも重なるような形状である。また、少なくとも以下の関係式が成立する必要がある。即ち、接続スリーブ10の中心軸に平行な面で切った断面(図2)において、各部の軸方向に垂直な長さを比較すると、「導体部31<ストッパ隙間<被覆部32,導体部41」の関係式が成り立つ必要がある。上記の構成により、ストッパ13は、小径電線30の被覆部32と干渉することで、小径電線30の過剰な挿入を規制しているとともに、小径電線30の導体部31を挿通させている。これにより、ストッパ13よりも大径電線挿入口12寄りの部分には、小径電線30のうち導体部31のみが位置することとなる。また、ストッパ13は、大径電線40の導体部41と干渉することで、大径電線40の過剰な挿入を規制している。これにより、ストッパ13よりも小径電線挿入口11寄りの部分には、大径電線40が位置せず、小径電線30のみが位置することとなる。なお、上述したストッパ隙間、導体部31、及び導体部41の形状の関係は、圧着を行う前の関係を示すものであるが、ストッパ13の近傍は通常は圧着されないため、圧着後においても、このような形状の関係が成立する。   The stopper 13 is formed inside the connection sleeve 10 and in the center in the axial direction. As shown in FIG. 2, the stopper 13 is formed so as to block a part of the space inside the connection sleeve 10. The stopper 13 functions to make the insertion amount of the small diameter electric wire 30 and the large diameter electric wire 40 appropriate. Specifically, when the gap formed by the stopper 13 closing a part of the space inside the connection sleeve 10 is referred to as a stopper gap, the conductor portion 31 of the small-diameter wire 30 can be inserted into the stopper gap. The shape is such that the conductor portion 31 of the small-diameter electric wire 30 and the conductor portion 41 of the large-diameter electric wire 40 cannot be inserted. In other words, in the cross section cut by the plane perpendicular to the axial direction, the conductor portion 31 has a shape that fits in the stopper gap, but the covering portion 32 and the conductor portion 41 do not fit in the stopper gap and overlap with the stopper 13. It is. Further, at least the following relational expression needs to be satisfied. That is, when the length perpendicular to the axial direction of each part in the cross section (FIG. 2) cut by a plane parallel to the central axis of the connection sleeve 10 is compared, “conductor part 31 <stopper gap <covering part 32, conductor part 41”. The relational expression of “ With the above configuration, the stopper 13 interferes with the covering portion 32 of the small-diameter electric wire 30, thereby restricting excessive insertion of the small-diameter electric wire 30 and inserting the conductor portion 31 of the small-diameter electric wire 30. As a result, only the conductor portion 31 of the small-diameter wire 30 is positioned closer to the large-diameter wire insertion opening 12 than the stopper 13. Further, the stopper 13 restricts excessive insertion of the large-diameter wire 40 by interfering with the conductor portion 41 of the large-diameter wire 40. As a result, the large-diameter wire 40 is not located in the portion closer to the small-diameter wire insertion port 11 than the stopper 13, and only the small-diameter wire 30 is located. In addition, although the relationship between the shape of the stopper gap, the conductor portion 31, and the conductor portion 41 described above indicates a relationship before crimping, the vicinity of the stopper 13 is not usually crimped, so even after crimping, Such a shape relationship is established.

小径被覆圧着部14は、接続スリーブ10の軸方向の中央よりも小径電線挿入口11寄りに形成されている。小径被覆圧着部14は、接続スリーブ10がカシメられることにより、接続スリーブ10の内部に配置された小径電線30の被覆部32が圧着されている部分である。つまり、小径被覆圧着部14の内壁は、小径電線30の被覆部32と接触している。また、小径電線30は、圧着されることにより、径が小さくなっている(圧縮されている)。これにより、接続スリーブ10(小径被覆圧着部14)と小径電線30が機械的に接続されている。   The small-diameter covering and crimping portion 14 is formed closer to the small-diameter wire insertion port 11 than the center of the connection sleeve 10 in the axial direction. The small-diameter covered crimping portion 14 is a portion where the covering portion 32 of the small-diameter electric wire 30 disposed inside the connecting sleeve 10 is crimped by crimping the connecting sleeve 10. That is, the inner wall of the small-diameter covering crimping portion 14 is in contact with the covering portion 32 of the small-diameter wire 30. Moreover, the diameter of the small diameter electric wire 30 is reduced (compressed) by being crimped. Thereby, the connection sleeve 10 (small diameter covering crimping part 14) and the small diameter electric wire 30 are mechanically connected.

導体圧着部15は、接続スリーブ10の軸方向の中央よりも大径電線挿入口12寄りに形成されている。導体圧着部15は、接続スリーブ10がカシメられることにより、接続スリーブ10の内部に配置された、小径電線30の導体部31と、大径電線40の導体部41と、を重ねた状態で圧着されている部分である。また、導体部31及び導体部41は、複数の導体線から構成されているため、圧着されることにより、径方向(詳細には、径方向のうち圧着方向に垂直な方向)に広がることとなる。従って、図3に示すように、導体部31の一部が接続スリーブ10(導体圧着部15)の内壁に接触しているとともに、この導体部31の一部以外は大径電線40の導体部41に覆われている。また、小径電線30の導体部31及び大径電線40の導体部41は、圧着されることにより、径が小さくなっている(圧縮されている)。これにより、接続スリーブ10と小径電線30(導体部31)と大径電線40(導体部41)とは、機械的に接続されている。また、導体部31と導体部41とは電気的に接続されている。   The conductor crimping portion 15 is formed closer to the large-diameter wire insertion opening 12 than the center of the connection sleeve 10 in the axial direction. The conductor crimping portion 15 is crimped in a state in which the conductor portion 31 of the small-diameter electric wire 30 and the conductor portion 41 of the large-diameter electric wire 40 arranged inside the connection sleeve 10 are overlapped by caulking the connection sleeve 10. It is a part that has been. Moreover, since the conductor part 31 and the conductor part 41 are comprised from the several conductor wire, they are spread in radial direction (specifically, a direction perpendicular | vertical to a crimping direction among radial directions) by crimping. Become. Therefore, as shown in FIG. 3, a part of the conductor part 31 is in contact with the inner wall of the connection sleeve 10 (conductor crimping part 15), and the conductor part of the large-diameter electric wire 40 except the part of the conductor part 31. 41. In addition, the conductor portion 31 of the small-diameter electric wire 30 and the conductor portion 41 of the large-diameter electric wire 40 are compressed (compressed) by being crimped. Thereby, the connection sleeve 10, the small diameter electric wire 30 (conductor part 31), and the large diameter electric wire 40 (conductor part 41) are mechanically connected. The conductor portion 31 and the conductor portion 41 are electrically connected.

ここで、特許文献1では、2つの電線の導体部同士は、金属製の接続スリーブを介して電気的に接続されている。これに対し、本実施形態では、小径電線30の導体部31と大径電線40の導体部41は直接接続されている。従って、接続スリーブ10は金属(導体)であっても良いし、樹脂等の絶縁体であっても良い。   Here, in patent document 1, the conductor parts of two electric wires are electrically connected via the connection sleeve made from metal. On the other hand, in this embodiment, the conductor part 31 of the small diameter electric wire 30 and the conductor part 41 of the large diameter electric wire 40 are directly connected. Therefore, the connection sleeve 10 may be a metal (conductor) or an insulator such as a resin.

次に、図4から図7を参照して、電線接続構造1を作成する方法(電線接続方法)について説明する。図4は、小径電線挿入工程を示す斜視図である。図5は、小径被覆圧着工程を示す斜視図である。図6は、大径電線挿入工程を示す斜視図である。図7は、導体圧着工程を示す斜視図である。   Next, with reference to FIG. 4 to FIG. 7, a method of creating the wire connection structure 1 (wire connection method) will be described. FIG. 4 is a perspective view showing a small-diameter electric wire insertion step. FIG. 5 is a perspective view showing a small diameter covering pressure bonding step. FIG. 6 is a perspective view showing a large-diameter wire insertion step. FIG. 7 is a perspective view showing a conductor crimping process.

リペア作業を行う前は、図4に示すように、接続スリーブ10に小径被覆圧着部14及び導体圧着部15は形成されていない。以下では、圧着が行われる前の小径被覆圧着部14に相当する部分を小径被覆圧着相当部14aとし、圧着が行われる前の導体圧着部15に相当する部分を導体圧着相当部15aとする。   Prior to the repair work, as shown in FIG. 4, the small diameter covering crimping portion 14 and the conductor crimping portion 15 are not formed on the connection sleeve 10. Hereinafter, a portion corresponding to the small-diameter covered crimping portion 14 before crimping is referred to as a small-diameter coated crimping portion 14a, and a portion corresponding to the conductor crimping portion 15 before crimping is referred to as a conductor crimping equivalent portion 15a.

作業者は、初めに、図4に示すように、小径電線30を小径電線挿入口11から接続スリーブ10に挿入する(小径電線挿入工程)。このとき、上述のようにストッパ13が小径電線30の被覆部32と干渉するため、作業者は、小径電線30の適切な挿入量を把握できる。また、小径電線30の挿入後では、図2及び図5等に示すように、小径電線30の導体部31が大径電線挿入口12から軸方向に突出している(突出するように接続スリーブ10及び小径電線30の長さが調整されている)。この構成により、作業者は、小径電線30の導体部31が導体圧着相当部15aを貫通していることを確認できる。従って、例えば小径電線30がストッパ13等に引っ掛かって向きが大きく変わり、導体圧着部15に入らない状態を回避できる。   First, as shown in FIG. 4, the operator inserts the small-diameter wire 30 into the connection sleeve 10 from the small-diameter wire insertion port 11 (small-diameter wire insertion step). At this time, since the stopper 13 interferes with the covering portion 32 of the small-diameter electric wire 30 as described above, the operator can grasp an appropriate insertion amount of the small-diameter electric wire 30. Further, after insertion of the small-diameter wire 30, as shown in FIGS. 2 and 5, etc., the conductor portion 31 of the small-diameter wire 30 protrudes in the axial direction from the large-diameter wire insertion port 12 (the connection sleeve 10 so as to protrude). And the length of the small-diameter wire 30 is adjusted). With this configuration, the operator can confirm that the conductor portion 31 of the small-diameter electric wire 30 penetrates the conductor crimping equivalent portion 15a. Therefore, for example, it is possible to avoid a state in which the small-diameter electric wire 30 is hooked on the stopper 13 or the like and the direction changes greatly and does not enter the conductor crimping portion 15.

次に、作業者は、図5に示すように、接続スリーブ10の小径被覆圧着相当部14aの内側の空間(小径被覆圧着空間)に位置する小径電線30の被覆部32を圧着する(小径被覆圧着工程)。これにより、接続スリーブ10に小径電線30を機械的に接続することができるので、その後の作業が容易となる。図5には、小径被覆圧着工程後の様子が示されている。この小径被覆圧着工程後において、小径電線挿入口11と小径電線30との間に隙間が形成されている(隙間が形成されるように小径被覆圧着工程を行う)。これにより、小径電線30に軸方向以外の引張り力が掛かった場合であっても、小径電線30が動くことで小径電線30に掛かる負荷を軽減できる。   Next, as shown in FIG. 5, the operator crimps the covering portion 32 of the small-diameter electric wire 30 located in the space (small-diameter covering crimping space) inside the small-diameter covering crimping equivalent portion 14a of the connecting sleeve 10 (small-diameter covering). Crimping process). Thereby, since the small diameter electric wire 30 can be mechanically connected to the connection sleeve 10, subsequent work becomes easy. FIG. 5 shows a state after the small-diameter covering and pressing step. After this small diameter covering and crimping step, a gap is formed between the small diameter electric wire insertion port 11 and the small diameter electric wire 30 (the small diameter covering and crimping step is performed so that a gap is formed). Accordingly, even when a tensile force other than the axial direction is applied to the small-diameter electric wire 30, the load applied to the small-diameter electric wire 30 can be reduced by the movement of the small-diameter electric wire 30.

次に、作業者は、図6に示すように、大径電線40を大径電線挿入口12から接続スリーブ10に挿入する(大径電線挿入工程)。このとき、上述のようにストッパ13が大径電線40の導体部41と干渉するため、作業者は、大径電線40の適切な挿入量を把握できる。また、大径電線40の挿入後では、図2及び図7等に示すように、大径電線40の導体部41の先端部(小径電線挿入口11側の端部)がストッパ13に接触しているとともに、大径電線40の導体部41が大径電線挿入口12の外側にも位置している(接続スリーブ10及び大径電線40の長さが調整されている)。この構成により、作業者は、大径電線40の導体部41が導体圧着相当部15aの軸方向の全体にわたって位置していることを確認できる。   Next, as shown in FIG. 6, the operator inserts the large-diameter wire 40 into the connection sleeve 10 from the large-diameter wire insertion port 12 (large-diameter wire insertion step). At this time, since the stopper 13 interferes with the conductor portion 41 of the large-diameter electric wire 40 as described above, the operator can grasp an appropriate insertion amount of the large-diameter electric wire 40. Further, after the insertion of the large-diameter electric wire 40, as shown in FIGS. 2 and 7, etc., the tip end portion (the end portion on the small-diameter electric wire insertion port 11 side) of the conductor portion 41 of the large-diameter electric wire 40 comes into contact with the stopper 13. In addition, the conductor portion 41 of the large-diameter wire 40 is also located outside the large-diameter wire insertion port 12 (the lengths of the connection sleeve 10 and the large-diameter wire 40 are adjusted). With this configuration, the operator can confirm that the conductor portion 41 of the large-diameter electric wire 40 is located over the entire axial direction of the conductor crimping equivalent portion 15a.

次に、作業者は、図7に示すように、接続スリーブ10の導体圧着相当部15aの内側の空間(導体圧着空間)に位置する小径電線30の導体部31と大径電線40の導体部41とを圧着する(導体圧着工程)。これにより、接続スリーブ10に、小径電線30(導体部31)と大径電線40(導体部41)を機械的に接続することができる。また、導体部31と導体部41とを電気的に接続することができる。以上により、リペア作業が完了し、図1に示す電線接続構造1が作成される。   Next, as shown in FIG. 7, the operator performs the conductor portion 31 of the small-diameter electric wire 30 and the conductor portion of the large-diameter electric wire 40 located in the space (conductor crimping space) inside the conductor crimping equivalent portion 15 a of the connection sleeve 10. 41 is crimped (conductor crimping step). Thereby, the small diameter electric wire 30 (conductor part 31) and the large diameter electric wire 40 (conductor part 41) can be mechanically connected to the connection sleeve 10. Moreover, the conductor part 31 and the conductor part 41 can be electrically connected. Thus, the repair work is completed, and the wire connection structure 1 shown in FIG. 1 is created.

次に、本実施形態の電線接続構造1が有する効果について、特許文献1の電線接続構造と比較して説明する。本実施形態の電線接続構造1は、特許文献1と比較して、機械的接続の強度が高く、電気的接続の安定性が高いという効果を奏する。   Next, the effect which the electric wire connection structure 1 of this embodiment has is demonstrated compared with the electric wire connection structure of patent document 1. FIG. The wire connection structure 1 of this embodiment has the effect that the strength of mechanical connection is high and the stability of electrical connection is high compared to Patent Document 1.

具体的に説明すると、特許文献1の電線接続構造は、2つの電線の導体部のみが個別に接続スリーブに圧着されている。ここで、導体部は被覆部よりも径が小さく、特に本実施形態のように小径電線を用いる場合は、その影響が大きくなる。また、圧着で用いる工具は、圧着形状が定まっているため、他の用途で用いる圧着工具を流用する場合は、小径電線の導体部はあまり圧縮されないため、機械的接続の強度が特に低くなる。   Specifically, in the electric wire connection structure of Patent Document 1, only the conductor portions of the two electric wires are individually crimped to the connection sleeve. Here, the conductor portion has a smaller diameter than the covering portion, and in particular, when a small-diameter electric wire is used as in the present embodiment, the influence becomes large. In addition, since the crimping shape of the tool used for crimping is fixed, when the crimping tool used for other purposes is diverted, the conductor portion of the small-diameter electric wire is not compressed so much, and the strength of the mechanical connection is particularly low.

この点、本実施形態では、小径電線30は、導体部31と、被覆部32と、がそれぞれ圧着されている。被覆部32は、導体部31よりも径が大きいため、圧着工具を流用した場合でも機械的接続の強度を高くすることができる。また、導体部31と被覆部32の両方が圧着されているため、機械的接続の強度を更に高くすることができる。更に、導体部31が単独で圧着されるのではなく、導体部41とともに圧着されるので圧着される部分の径が大きくなるため、圧着工具を流用した場合でも機械的接続の強度を高くすることができる。以上の理由により、非常に高い機械的接続の強度が実現される。なお、大径電線40においても、導体部41が単独で圧着されるのではなく導体部31とともに圧着されるので、十分に圧縮されることとなり、機械的接続の強度が高くなる。   In this respect, in the present embodiment, the small-diameter electric wire 30 has a conductor portion 31 and a covering portion 32 that are respectively crimped. Since the covering portion 32 has a diameter larger than that of the conductor portion 31, it is possible to increase the strength of mechanical connection even when a crimping tool is used. Moreover, since both the conductor part 31 and the coating | coated part 32 are crimped | bonded, the intensity | strength of mechanical connection can be made still higher. Furthermore, since the conductor portion 31 is not crimped alone but is crimped together with the conductor portion 41, the diameter of the portion to be crimped is increased, so that the strength of the mechanical connection is increased even when a crimping tool is diverted. Can do. For these reasons, a very high mechanical connection strength is achieved. Even in the large-diameter electric wire 40, the conductor portion 41 is not crimped alone but is crimped together with the conductor portion 31, so that the conductor portion 41 is sufficiently compressed, and the strength of the mechanical connection is increased.

また、機械的接続の強度の高さを説明する際に、導体部31及び被覆部32が十分に圧縮されると述べたが、この構成は、機械的強度を高くするだけでなく、電気的接続の安定性にも寄与するため、電気的接続の安定性を高くすることができる。   Further, in describing the high strength of the mechanical connection, it has been described that the conductor portion 31 and the covering portion 32 are sufficiently compressed. However, this configuration not only increases the mechanical strength but also electrically Since it also contributes to the stability of the connection, the stability of the electrical connection can be increased.

次に、上記実施形態の変形例を説明する。図8は、チューブ50を備える変形例に係る電線接続構造1を軸方向に平行な面で切った断面図である。なお、本変形例の説明においては、前述の実施形態と同一又は類似の部材には図面に同一の符号を付し、説明を省略する場合がある。   Next, a modification of the above embodiment will be described. FIG. 8 is a cross-sectional view of the electric wire connection structure 1 according to a modification including the tube 50 taken along a plane parallel to the axial direction. In the description of this modification, the same or similar members as those in the above-described embodiment may be denoted by the same reference numerals in the drawings, and description thereof may be omitted.

本変形例に係る電線接続構造1は、チューブ50を備えている点において、上記実施形態と異なる。チューブ50は、絶縁性及び防水性を有しており、外周面を隙間なく覆うように配置される。この構成により、電線接続構造1において導体部31及び導体部41が外部に露出していても絶縁性及び防水性を確保できる。なお、チューブ50を接続スリーブ10等に接続する方法としては、例えば、接着剤及びテープ等がある。また、接続スリーブ10とチューブ50の隙間に接着剤が入るため、接着剤を用いて接続を行うことで、防水性を更に高めることができる。   The electric wire connection structure 1 according to this modification differs from the above embodiment in that the tube 50 is provided. The tube 50 has an insulating property and a waterproof property, and is disposed so as to cover the outer peripheral surface without a gap. With this configuration, insulation and waterproofness can be ensured even when the conductor portion 31 and the conductor portion 41 are exposed to the outside in the wire connection structure 1. Examples of a method for connecting the tube 50 to the connection sleeve 10 and the like include an adhesive and a tape. Further, since the adhesive enters the gap between the connection sleeve 10 and the tube 50, waterproofing can be further improved by performing the connection using the adhesive.

以上に説明したように、上記実施形態の電線接続構造1では、小径電線30と、小径電線30よりも径が大きい大径電線40と、の両方が筒状の接続スリーブ10に挿入された状態で圧着されることで、小径電線30と大径電線40が電気的かつ機械的に接続される。接続スリーブ10には、小径電線30が挿入される小径電線挿入口11が軸方向の一端に形成されるとともに、大径電線40が挿入される大径電線挿入口12が軸方向の他端に形成されている。接続スリーブ10は、小径被覆圧着部14と、導体圧着部15と、ストッパ13と、を備える。小径被覆圧着部14は、軸方向の小径電線挿入口11寄りに配置されており、小径電線30の被覆部32を圧着している。導体圧着部15は、軸方向の大径電線挿入口12寄りに配置されており、小径電線30の導体部31と大径電線40の導体部41を重ねた状態で圧着している。ストッパ13は、小径被覆圧着部14と導体圧着部15の間に配置されており、小径電線30の少なくとも導体部31を挿通させており、大径電線40が小径被覆圧着部14に到達することを防止する。   As described above, in the wire connection structure 1 of the above embodiment, both the small-diameter wire 30 and the large-diameter wire 40 having a larger diameter than the small-diameter wire 30 are inserted into the cylindrical connection sleeve 10. The small-diameter electric wire 30 and the large-diameter electric wire 40 are electrically and mechanically connected by being crimped by. The connection sleeve 10 has a small-diameter wire insertion port 11 into which the small-diameter wire 30 is inserted at one end in the axial direction, and a large-diameter wire insertion port 12 into which the large-diameter wire 40 is inserted at the other end in the axial direction. Is formed. The connection sleeve 10 includes a small-diameter covering crimping portion 14, a conductor crimping portion 15, and a stopper 13. The small-diameter covered crimping portion 14 is disposed near the small-diameter electric wire insertion port 11 in the axial direction, and crimps the covering portion 32 of the small-diameter electric wire 30. The conductor crimping portion 15 is disposed near the large-diameter wire insertion port 12 in the axial direction, and is crimped in a state where the conductor portion 31 of the small-diameter wire 30 and the conductor portion 41 of the large-diameter wire 40 are overlapped. The stopper 13 is disposed between the small-diameter covered crimping portion 14 and the conductor crimping portion 15, passes at least the conductor portion 31 of the small-diameter electric wire 30, and the large-diameter electric wire 40 reaches the small-diameter coated crimping portion 14. To prevent.

これにより、小径電線30の導体部31と大径電線40の導体部41とを重ねて圧着しているため、個別に圧着する場合と比較して断面積が増加するので、強い力で圧着がされ易くなり、良好な電気的接続及び機械的接続を実現できる。また、小径電線30の被覆部32が更に圧着されるため、小径電線30の機械的接続を更に良好(高強度)にすることができる。   Thereby, since the conductor part 31 of the small-diameter electric wire 30 and the conductor part 41 of the large-diameter electric wire 40 are overlapped and crimped, the cross-sectional area increases compared to the case of crimping individually, so that the crimping can be performed with a strong force. And good electrical connection and mechanical connection can be realized. Moreover, since the coating | coated part 32 of the small diameter electric wire 30 is further crimped | bonded, the mechanical connection of the small diameter electric wire 30 can be made further favorable (high intensity | strength).

また、上記実施形態の電線接続構造1では、接続スリーブ10内において、ストッパ13より大径電線挿入口12寄りの部分には、小径電線30のうち導体部31のみが位置している。   Moreover, in the wire connection structure 1 of the said embodiment, only the conductor part 31 is located in the part near the large diameter electric wire insertion port 12 from the stopper 13 in the connection sleeve 10 among the small diameter electric wires 30.

これにより、導体圧着部15において小径電線30の導体部31のみを圧着できるので、更に良好な電気的接続及び機械的接続を実現できる。   Thereby, since only the conductor part 31 of the small diameter electric wire 30 can be crimped | bonded in the conductor crimping | compression-bonding part 15, still more favorable electrical connection and mechanical connection are realizable.

また、上記実施形態の電線接続構造1では、小径電線30の導体部31は、大径電線挿入口12から外側(小径電線挿入口11と反対側)へ突出している。   Moreover, in the electric wire connection structure 1 of the said embodiment, the conductor part 31 of the small diameter electric wire 30 protrudes from the large diameter electric wire insertion port 12 to the outer side (opposite side to the small diameter electric wire insertion port 11).

これにより、小径電線30の導体部31が導体圧着部15を通過していることを確認したうえで圧着を行うことができる。従って、良好な電気的接続及び機械的接続を確実に実現できる。   Thereby, after confirming that the conductor portion 31 of the small-diameter electric wire 30 passes through the conductor crimping portion 15, the crimping can be performed. Therefore, good electrical connection and mechanical connection can be reliably realized.

また、上記実施形態の電線接続構造1では、大径電線40の導体部41は、ストッパ13に接触しているとともに、接続スリーブ10の大径電線挿入口12の外部にも位置している。   In the wire connection structure 1 of the above embodiment, the conductor portion 41 of the large-diameter wire 40 is in contact with the stopper 13 and is also located outside the large-diameter wire insertion port 12 of the connection sleeve 10.

これにより、大径電線挿入口12からストッパ13まで大径電線40の導体部41が位置していることを確認したうえで圧着を行うことができる。従って、良好な電気的接続及び機械的接続を確実に実現できる。   Thereby, after confirming that the conductor part 41 of the large diameter electric wire 40 is located from the large diameter electric wire insertion port 12 to the stopper 13, it can crimp. Therefore, good electrical connection and mechanical connection can be reliably realized.

また、上記実施形態の電線接続構造1では、導体圧着部15を接続スリーブ10の軸方向に垂直な面で切断した断面において、小径電線30の導体部31は、一部が接続スリーブ10の内壁に接触しているとともに、小径電線30の導体部31の一部以外は大径電線40の導体部41に覆われている。   Further, in the electric wire connection structure 1 of the above-described embodiment, the conductor portion 31 of the small-diameter electric wire 30 is partly on the inner wall of the connection sleeve 10 in a cross section obtained by cutting the conductor crimping portion 15 along a plane perpendicular to the axial direction of the connection sleeve 10. The conductor portion 41 of the large-diameter electric wire 40 is covered with a portion other than a part of the conductor portion 31 of the small-diameter electric wire 30.

これにより、小径電線30の導体部31の周囲を接続スリーブ10又は大径電線40の導体部41で覆うことができるので、小径電線30の機械的接続を更に良好(高強度)にすることができる。   Thereby, since the circumference | surroundings of the conductor part 31 of the small diameter electric wire 30 can be covered with the connection sleeve 10 or the conductor part 41 of the large diameter electric wire 40, the mechanical connection of the small diameter electric wire 30 can be further improved (high strength). it can.

また、上記実施形態の電線接続構造1では、小径電線挿入口11と、小径電線30の被覆部32と、の間に隙間が形成されている。   Moreover, in the electric wire connection structure 1 of the said embodiment, the clearance gap is formed between the small diameter electric wire insertion port 11 and the coating | coated part 32 of the small diameter electric wire 30. FIG.

これにより、小径電線30に軸方向以外の引張り力が掛かった場合であっても、小径電線30が動くことで小径電線30に掛かる負荷を軽減できる。   Accordingly, even when a tensile force other than the axial direction is applied to the small-diameter electric wire 30, the load applied to the small-diameter electric wire 30 can be reduced by the movement of the small-diameter electric wire 30.

また、上記変形例の電線接続構造1では、小径電線挿入口11から大径電線挿入口12まで接続スリーブ10の外周面を隙間なく覆うように配置されるチューブ50を備える。   Moreover, in the electric wire connection structure 1 of the said modification, the tube 50 arrange | positioned so that the outer peripheral surface of the connection sleeve 10 may be covered without a gap from the small diameter electric wire insertion port 11 to the large diameter electric wire insertion port 12 is provided.

これにより、防水性を有する電線接続構造1を実現できる。また、電線接続構造1を外力から保護することができる。   Thereby, the electric wire connection structure 1 which has waterproofness is realizable. Moreover, the electric wire connection structure 1 can be protected from external force.

以上に本発明の好適な実施の形態を説明したが、上記の構成は例えば以下のように変更することができる。   The preferred embodiment of the present invention has been described above, but the above configuration can be modified as follows, for example.

上記実施形態では、小径電線挿入口11に1本の小径電線30を挿入し、大径電線挿入口12に1本の大径電線40を挿入して接続する構成である。これに代えて、小径電線挿入口11に複数本の小径電線30を挿入したり、大径電線挿入口12に複数本の大径電線40を挿入したりしても良い。それぞれの本数は特に限定されないが、例えば2本又は3本の小径電線30と1本の大径電線40を接続したり、3本の小径電線30と2本の大径電線40を接続したり、1本の小径電線30と2本の大径電線40を接続したりすることができる。また、この場合のストッパ13の構成の一例としては、軸方向に垂直な面で切った断面が長方形であり、長方形の短辺の長さが導体部41よりも短く、導体部31よりも長い形状である(長方形に代えて長円であっても良い)。   In the above embodiment, one small-diameter electric wire 30 is inserted into the small-diameter electric wire insertion port 11 and one large-diameter electric wire 40 is inserted into the large-diameter electric wire insertion port 12 for connection. Instead of this, a plurality of small-diameter wires 30 may be inserted into the small-diameter wire insertion port 11, or a plurality of large-diameter wires 40 may be inserted into the large-diameter wire insertion port 12. The number of each is not particularly limited. For example, two or three small-diameter wires 30 and one large-diameter wire 40 are connected, or three small-diameter wires 30 and two large-diameter wires 40 are connected. One small-diameter electric wire 30 and two large-diameter electric wires 40 can be connected. In addition, as an example of the configuration of the stopper 13 in this case, a cross section cut by a plane perpendicular to the axial direction is a rectangle, and the length of the short side of the rectangle is shorter than the conductor portion 41 and longer than the conductor portion 31. It is a shape (it may be an ellipse instead of a rectangle).

上記実施形態では、小径電線挿入工程後に小径被覆圧着工程が行われているが、小径電線挿入工程後に大径電線挿入工程を行っても良い。この場合、圧着作業を連続的に行うことができる。また、例えば接続スリーブ10が固定されていれば、小径電線挿入工程と大径電線挿入工程を同時に行っても良い。   In the above embodiment, the small-diameter covering and crimping step is performed after the small-diameter wire insertion step, but the large-diameter wire insertion step may be performed after the small-diameter wire insertion step. In this case, the crimping operation can be performed continuously. For example, if the connection sleeve 10 is fixed, the small-diameter wire insertion step and the large-diameter wire insertion step may be performed simultaneously.

上記実施形態では、接続スリーブ10は円筒であるが、筒状であれば他の形状(例えば矩形の筒状)であっても良い。また、ストッパ13は、接続スリーブ10の軸方向の中央に配置されているが、軸方向の中央以外に配置されていても良い。   In the embodiment described above, the connection sleeve 10 is a cylinder, but may be any other shape (for example, a rectangular cylinder) as long as it is a cylinder. Moreover, although the stopper 13 is arrange | positioned in the center of the axial direction of the connection sleeve 10, you may arrange | position other than the center of an axial direction.

上記実施形態では、小径電線30の導体部31及び大径電線40の導体部41は、ともに、接続スリーブ10の軸方向の外側に突出しているが、導体部31及び導体部41の全てが接続スリーブ10の内部に位置していても良い。また、導体部31及び導体部41が、それぞれの電線の挿入時に接続スリーブ10の外側に位置しており、圧着工程を行うことで、接続スリーブ10の内側に位置するようになる構成であっても良い。   In the above embodiment, both the conductor portion 31 of the small-diameter wire 30 and the conductor portion 41 of the large-diameter wire 40 protrude outward in the axial direction of the connection sleeve 10, but all of the conductor portion 31 and the conductor portion 41 are connected. It may be located inside the sleeve 10. In addition, the conductor portion 31 and the conductor portion 41 are positioned outside the connection sleeve 10 when the respective electric wires are inserted, and are configured to be positioned inside the connection sleeve 10 by performing a crimping process. Also good.

上記実施形態では、小径電線30の導体部31及び大径電線40の導体部41は、ともに、大径電線挿入口12からストッパ13までの全ての空間に位置しているが、一部のみに位置していても良い。   In the above embodiment, the conductor portion 31 of the small-diameter electric wire 30 and the conductor portion 41 of the large-diameter electric wire 40 are both located in the entire space from the large-diameter wire insertion port 12 to the stopper 13, but only in part. May be located.

上記実施形態では、ストッパ13は小径電線30と大径電線40の両方のストッパとして機能するが、大径電線40のみのストッパとして機能していても良い。即ち、小径電線30の被覆部32がストッパ13を通過可能であっても良い。   In the above embodiment, the stopper 13 functions as a stopper for both the small-diameter wire 30 and the large-diameter wire 40, but may function as a stopper for only the large-diameter wire 40. That is, the covering portion 32 of the small-diameter electric wire 30 may be able to pass through the stopper 13.

上記実施形態では、ストッパ13は、接続スリーブ10の軸方向の中央に形成されているが、中央からズレた位置に形成されていても良い。   In the above embodiment, the stopper 13 is formed at the center in the axial direction of the connection sleeve 10, but may be formed at a position shifted from the center.

上記実施形態では、本発明を自動車に配置される電線に適用する構成であるが、他の乗物又は建物等に配置される電線にも本発明を適用できる。   In the said embodiment, although it is the structure which applies this invention to the electric wire arrange | positioned at a motor vehicle, this invention is applicable also to the electric wire arrange | positioned at another vehicle or a building.

1 電線接続構造
10 接続スリーブ
11 小径電線挿入口
12 大径電線挿入口
13 ストッパ
14 小径被覆圧着部
15 導体圧着部
30 小径電線
31 導体部
32 被覆部
40 大径電線
41 導体部
42 被覆部
50 チューブ
DESCRIPTION OF SYMBOLS 1 Wire connection structure 10 Connection sleeve 11 Small diameter electric wire insertion port 12 Large diameter electric wire insertion port 13 Stopper 14 Small diameter covering crimping part 15 Conductor crimping part 30 Small diameter electric wire 31 Conductor part 32 Covering part 40 Large diameter electric wire 41 Conductor part 42 Covering part 50 Tube

Claims (9)

小径電線と、前記小径電線よりも径が大きい大径電線と、の両方が筒状の接続スリーブに挿入された状態で圧着されることで、前記小径電線と前記大径電線が電気的かつ機械的に接続された電線接続構造において、
前記接続スリーブには、前記小径電線が挿入される小径電線挿入口が軸方向の一端に形成されるとともに、前記大径電線が挿入される大径電線挿入口が軸方向の他端に形成されており、
前記接続スリーブは、
軸方向の前記小径電線挿入口寄りに配置されており、前記小径電線の被覆部を圧着している小径被覆圧着部と、
軸方向の前記大径電線挿入口寄りに配置されており、前記小径電線の導体部と前記大径電線の導体部を重ねた状態で圧着している導体圧着部と、
前記小径被覆圧着部と前記導体圧着部の間に配置されており、前記小径電線の少なくとも前記導体部を挿通させており、前記大径電線が前記小径被覆圧着部に到達することを防止するストッパと、
を備えることを特徴とする電線接続構造。
Both the small-diameter electric wire and the large-diameter electric wire having a diameter larger than that of the small-diameter electric wire are crimped in a state where the small-diameter electric wire and the large-diameter electric wire are inserted into the cylindrical connection sleeve, so that the small-diameter electric wire and the large-diameter electric wire are electrically and mechanically In an electrically connected wire connection structure,
In the connection sleeve, a small-diameter wire insertion port into which the small-diameter wire is inserted is formed at one end in the axial direction, and a large-diameter wire insertion port into which the large-diameter wire is inserted is formed at the other end in the axial direction. And
The connection sleeve is
A small-diameter covering crimping portion disposed near the small-diameter electric wire insertion port in the axial direction, and crimping the covering portion of the small-diameter electric wire;
A conductor crimping portion disposed near the large-diameter wire insertion opening in the axial direction, and crimping the conductor portion of the small-diameter wire and the conductor portion of the large-diameter wire;
A stopper that is disposed between the small-diameter covered crimp portion and the conductor crimp portion, passes through at least the conductor portion of the small-diameter electric wire, and prevents the large-diameter wire from reaching the small-diameter coated crimp portion. When,
An electric wire connection structure comprising:
請求項1に記載の電線接続構造であって、
前記接続スリーブ内において、前記ストッパより前記大径電線挿入口寄りの部分には、前記小径電線のうち導体部のみが位置していることを特徴とする電線接続構造。
The wire connection structure according to claim 1,
In the connection sleeve, the conductor connecting structure is characterized in that only the conductor portion of the small-diameter electric wire is located in a portion closer to the large-diameter electric wire insertion opening than the stopper.
請求項1又は2に記載の電線接続構造であって、
前記小径電線の導体部は、前記大径電線挿入口から外側へ突出していることを特徴とする電線接続構造。
The wire connection structure according to claim 1 or 2,
The conductor connection structure of the small-diameter electric wire, wherein the conductor portion protrudes outward from the large-diameter electric wire insertion port.
請求項1から3までの何れか一項に記載の電線接続構造であって、
前記大径電線の導体部は、前記ストッパに接触しているとともに、前記接続スリーブの前記大径電線挿入口の外部にも位置していることを特徴とする電線接続構造。
The wire connection structure according to any one of claims 1 to 3,
The conductor portion of the large-diameter wire is in contact with the stopper and is also located outside the large-diameter wire insertion port of the connection sleeve.
請求項1から4までの何れか一項に記載の電線接続構造であって、
前記導体圧着部を前記接続スリーブの軸方向に垂直な面で切断した断面において、
前記小径電線の導体部は、一部が接続スリーブの内壁に接触しているとともに、前記小径電線の導体部の前記一部以外は大径電線の導体部に覆われていることを特徴とする電線接続構造。
The wire connection structure according to any one of claims 1 to 4,
In a cross section obtained by cutting the conductor crimping portion by a plane perpendicular to the axial direction of the connection sleeve,
The conductor portion of the small-diameter electric wire is partly in contact with the inner wall of the connection sleeve, and other than the part of the conductor portion of the small-diameter electric wire is covered with the conductor portion of the large-diameter electric wire. Wire connection structure.
請求項1から5までの何れか一項に記載の電線接続構造であって、
前記小径電線挿入口と、前記小径電線の被覆部と、の間に隙間が形成されていることを特徴とする電線接続構造。
The wire connection structure according to any one of claims 1 to 5,
A wire connection structure, wherein a gap is formed between the small-diameter wire insertion port and the small-diameter wire covering portion.
請求項1から6までの何れか一項に記載の電線接続構造であって、
前記小径電線挿入口から前記大径電線挿入口まで前記接続スリーブの外周面を隙間なく覆うように配置されるチューブを備えることを特徴とする電線接続構造。
The wire connection structure according to any one of claims 1 to 6,
An electric wire connection structure comprising a tube arranged so as to cover an outer peripheral surface of the connection sleeve without gap from the small diameter electric wire insertion port to the large diameter electric wire insertion port.
請求項1から7までの何れか一項に記載の電線接続構造であって、
前記小径電線挿入口に挿入される前記小径電線、及び、前記大径電線挿入口に挿入される前記大径電線の少なくとも一方が、複数本であることを特徴とする電線接続構造。
The wire connection structure according to any one of claims 1 to 7,
At least one of the small-diameter electric wire inserted into the small-diameter electric wire insertion port and the large-diameter electric wire inserted into the large-diameter electric wire insertion port is a plurality of wire connection structures.
小径電線と、前記小径電線よりも径が大きい大径電線と、の両方を内部にストッパが形成された筒状の接続スリーブに挿入して圧着することで、前記小径電線と前記大径電線を電気的かつ機械的に接続する電線接続方法において、
前記接続スリーブの軸方向の一側に形成された小径電線挿入口から前記小径電線を挿入し、少なくとも当該小径電線の導体部を前記ストッパよりも挿入方向奥側に位置させる小径電線挿入工程と、
前記接続スリーブの小径被覆圧着空間に位置する前記小径電線の被覆部を圧着する小径被覆圧着工程と、
前記接続スリーブの軸方向の他側に形成された大径電線挿入口から前記大径電線を挿入するとともに、前記ストッパまで前記大径電線を位置させる大径電線挿入工程と、
前記接続スリーブの導体圧着空間に位置する、前記小径電線の導体部と前記大径電線の導体部とを圧着する導体圧着工程と、
を含むことを特徴とする電線接続方法。
By inserting and crimping both the small-diameter wire and the large-diameter wire having a larger diameter than the small-diameter wire into a cylindrical connection sleeve having a stopper formed therein, the small-diameter wire and the large-diameter wire are In the wire connection method for electrical and mechanical connection,
A small-diameter electric wire insertion step of inserting the small-diameter electric wire from a small-diameter electric wire insertion port formed on one side in the axial direction of the connection sleeve, and positioning at least the conductor portion of the small-diameter electric wire on the far side in the insertion direction from the stopper;
A small-diameter covering and crimping step for crimping the covering portion of the small-diameter electric wire located in the small-diameter covering and crimping space of the connection sleeve;
A large-diameter wire insertion step of inserting the large-diameter wire from a large-diameter wire insertion port formed on the other side in the axial direction of the connection sleeve and positioning the large-diameter wire to the stopper;
A conductor crimping step for crimping the conductor portion of the small-diameter wire and the conductor portion of the large-diameter wire located in the conductor crimping space of the connection sleeve;
An electric wire connection method comprising:
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