JP5390823B2

JP5390823B2 - Terminal caulking structure

Info

Publication number: JP5390823B2
Application number: JP2008259349A
Authority: JP
Inventors: 信幸坂元
Original assignee: Yazaki Corp
Current assignee: Yazaki Corp
Priority date: 2008-10-06
Filing date: 2008-10-06
Publication date: 2014-01-15
Anticipated expiration: 2028-10-06
Also published as: JP2010092647A

Description

本発明は、自動車等に使用される端子かしめ構造に係り、特に、ハウジング内の端子に接続される配線材の外周をシール材で密封する防水コネクタ用の端子かしめ構造に関する。 The present invention relates to a terminal caulking structure used for an automobile or the like, and more particularly to a terminal caulking structure for a waterproof connector that seals an outer periphery of a wiring material connected to a terminal in a housing with a sealing material.

この種の従来の端子かしめ構造を有する防水コネクタとして、特許文献１に開示されたものがある。この防水コネクタ１００は、図９に示すように、複数の端子孔１０１ａを有するハウジング１０１と、ハウジング１０１のシール収容部１０２に収容されるシール材（防水栓）１０３及びホルダ１０４と、配線材１０５の一端にかしめ接合され、端子孔１０１ａに収容される複数のメス型端子１０６とを備え、図示しない相手側のオス型コネクタに嵌合することにより、端子１０６にかしめ接合される配線材１０５が雄型コネクタ側と電気的に接続されるようになっている。シール材１０３は、弾性材から形成され、配線材１０５の外周を覆うように設けられる。各端子１０６は角形の断面を有し、これに対応して端子孔１０１ａは矩形断面を有している。また、端子１０６は、配線材１０５の一端にかしめ接合されるかしめ部１０６ａと、下方に突出するスタビライザー１０６ｂと、雄型コネクタ側と接続される接続部１０６ｃとを有する。シール材１０３の貫通孔１０３ａは、端子１０６が通過する際にスタビライザー１０６ｂが貫通孔１０３ａの開口端部に引っ掛かってシール材１０３の一部が損傷してしまうことがない大きさに設定されると共に、その両端がやや広がった形となっている。 As this type of conventional waterproof connector having a terminal caulking structure, there is one disclosed in Patent Document 1. As shown in FIG. 9, the waterproof connector 100 includes a housing 101 having a plurality of terminal holes 101 a, a sealing material (waterproof plug) 103 and a holder 104 that are accommodated in a seal accommodating portion 102 of the housing 101, and a wiring material 105. A wiring member 105 that is caulked and joined to the terminal 106 by being fitted to a mating male connector (not shown). It is electrically connected to the male connector side. The sealing material 103 is formed from an elastic material and is provided so as to cover the outer periphery of the wiring material 105. Each terminal 106 has a square cross section, and correspondingly, the terminal hole 101a has a rectangular cross section. The terminal 106 includes a caulking portion 106a that is caulked and joined to one end of the wiring member 105, a stabilizer 106b that protrudes downward, and a connection portion 106c that is connected to the male connector side. The through hole 103a of the sealing material 103 is set to a size that prevents the stabilizer 106b from being caught by the opening end of the through hole 103a and damaging a part of the sealing material 103 when the terminal 106 passes. , The both ends are slightly expanded.

上記構成によれば、ホルダ１０４及びシール材１０３をハウジング１０１のシール収容部１０２に収容して、シール材１０３で配線材１０５の外周を覆うと共に、ホルダ１０４でシール材１０３を均一に圧縮することにより、シール材１０３が弾性変形して配線材１０５の外周を密封するので、配線材１０５の外周を介してハウジング１０１内に浸水することを防止できる。
特開２００３−２２８６８号公報 According to the above configuration, the holder 104 and the sealing material 103 are accommodated in the seal accommodating portion 102 of the housing 101, the outer periphery of the wiring material 105 is covered with the sealing material 103, and the sealing material 103 is uniformly compressed by the holder 104. As a result, the sealing material 103 is elastically deformed to seal the outer periphery of the wiring material 105, so that it is possible to prevent water from entering the housing 101 via the outer periphery of the wiring material 105.
Japanese Patent Laid-Open No. 2003-22868

しかしながら、特許文献１の端子かしめ構造にあっては、端子１０６の端子かしめ部１０６ａ表面にかしめ加工に伴って凹凸が生じるため、シール材１０３の貫通孔１０３ａ内を端子１０６が通過する際に、上記凹凸が貫通孔１０３ａの開口端部に引っ掛かってシール材１０３の一部が損傷してしまいシール性能が低下するため、端子１０６を着脱する毎にシール材１０３を交換する必要があった。 However, in the terminal caulking structure of Patent Document 1, since unevenness is generated in the surface of the terminal caulking portion 106a of the terminal 106 due to caulking, when the terminal 106 passes through the through hole 103a of the sealing material 103, Since the unevenness is caught on the opening end of the through-hole 103a and a part of the sealing material 103 is damaged to deteriorate the sealing performance, it is necessary to replace the sealing material 103 every time the terminal 106 is attached or detached.

そこで、本発明は、前記した課題を解決すべくなされたものであり、被覆電線にかしめられた接続端子を周囲の部材を傷付けることなく取扱うことができる端子かしめ構造を提供することを目的とする。 Then, this invention was made | formed in order to solve the above-mentioned subject, and it aims at providing the terminal crimping structure which can handle the connection terminal crimped by the covered electric wire, without damaging a surrounding member. .

請求項１の発明は、線状の導線部の外周が被覆部によって覆われた被覆電線と、接続端子の基端部に該被覆電線の外周を覆いつつ、かしめ固定される端子かしめ部と、該端子かしめ部に開口する開口部と、該端子かしめ部を構成し、該開口部の縁部の一部を内側に縁部の一部を該被覆電線内部に向かって折り曲げることで突設された圧接刃と、該端子かしめ部を構成し、該圧接刃の基端側及び先端側に形成される電線保持部とを備え、該端子かしめ部をかしめた際に、該圧接刃が該被覆部を貫通して、該圧接刃と該導線部が電気的に接続しつつ、該電線保持部が該被覆部に圧接保持されるとともに、該端子かしめ部の外形形状が該被覆電線の外形形状に沿って成形されることを特徴としている。 The invention of claim 1 is a covered electric wire in which the outer periphery of a linear conducting wire portion is covered with a covering portion, and a terminal caulking portion that is fixed by caulking while covering the outer periphery of the covered electric wire to the base end portion of the connection terminal, An opening opening to the terminal caulking portion and the terminal caulking portion are configured to protrude by bending a part of the edge of the opening inside and a part of the edge toward the inside of the covered electric wire. A crimping blade and an electric wire holding portion formed on the proximal end side and the distal end side of the crimping blade, and when the crimping portion is crimped, the crimping blade The wire holding portion is pressed against and held by the covering portion while the pressure contact blade and the conducting wire portion are electrically connected through the portion, and the outer shape of the terminal caulking portion is the outer shape of the covered wire. It is characterized by being molded along.

請求項２の発明は、請求項１記載の端子かしめ構造であって、前記接続端子の先端部に相手側端子と電気的に接続される接続部を備え、該接続部の外形形状が該被覆電線の外形形状に沿って形成されたことを特徴としている。 The invention according to claim 2 is the terminal caulking structure according to claim 1, further comprising a connecting portion electrically connected to a mating terminal at a tip end portion of the connecting terminal, wherein the outer shape of the connecting portion is the covering. It is characterized by being formed along the outer shape of the electric wire.

請求項１の発明によれば、端子かしめ部をかしめた際に、端子かしめ部の外形形状が被覆電線の外形形状に沿って成形されることによって、かしめ加工に伴う電線保持部表面の凹凸発生が抑制されるので、被覆電線にかしめられた接続端子を周囲の部材を傷付けることなく取扱うことができる。 According to the first aspect of the present invention, when the terminal caulking portion is caulked, the outer shape of the terminal caulking portion is formed along the outer shape of the covered electric wire, thereby generating irregularities on the surface of the electric wire holding portion accompanying caulking. Therefore, it is possible to handle the connection terminal caulked on the covered electric wire without damaging surrounding members.

請求項２の発明によれば、接続端子の接続部の外形形状を被覆電線の外形形状に沿って形成したことによって、被覆電線から突出する部位が無くなり、さらに周囲の部材を傷付けることなく被覆電線にかしめられた接続端子を取扱うことができる。 According to the invention of claim 2, by forming the outer shape of the connection portion of the connection terminal along the outer shape of the covered electric wire, there is no portion projecting from the covered electric wire, and further, the covered electric wire is not damaged. It can handle connection terminals that are caulked.

以下、本発明の一実施形態を図面に基づいて説明する。図１〜図８は本発明の一実施形態を示し、図１は端子かしめ構造を有するメス型端子の組立斜視図、図２は図１の端子かしめ部を拡大して示す軸方向の断面図、図３は図１の端子かしめ部を拡大して示す軸方向と垂直な方向の断面図、図４は端子かしめ部をかしめる前の状態を示す斜視図、図５は端子かしめ部をかしめた状態を示す斜視図、図６は図５の端子かしめ部を拡大して示す斜視図、図７は図５の端子かしめ部を拡大して示す軸方向の断面図、図８は図５の端子かしめ部を拡大して示す他の軸方向の断面図である。なお、図５〜図８はいずれも被覆電線を装着せずに端子かしめ部をかしめた状態を示す図である。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 to 8 show an embodiment of the present invention, FIG. 1 is an assembled perspective view of a female terminal having a terminal caulking structure, and FIG. 2 is an axial sectional view showing an enlarged terminal caulking portion of FIG. 3 is a cross-sectional view perpendicular to the axial direction showing the terminal caulking portion of FIG. 1 in an enlarged manner, FIG. 4 is a perspective view showing a state before the terminal caulking portion is caulked, and FIG. 5 is caulking the terminal caulking portion. 6 is an enlarged perspective view showing the terminal caulking portion of FIG. 5, FIG. 7 is an axial sectional view showing the terminal caulking portion of FIG. 5 in an enlarged manner, and FIG. It is sectional drawing of the other axial direction which expands and shows a terminal crimping part. 5-8 is a figure which shows the state which crimped the terminal crimping part, without mounting | wearing with a covered electric wire.

本願の端子かしめ構造１は、図１〜図８に示すように、被覆電線２と接続端子３とを電気的に接続しつつ、被覆電線２の一端に接続端子３を配設している。 As shown in FIGS. 1 to 8, the terminal caulking structure 1 of the present application has the connection terminal 3 disposed at one end of the covered electric wire 2 while electrically connecting the covered electric wire 2 and the connection terminal 3.

被覆電線２は、導線部２ｂと被覆部２ａとから構成されている。導線部２ｂは、導電材からなる線状の導線を複数本束ねることで構成されている。被覆部２ａは、絶縁材からなり、導線部２ｂの外周を被覆しつつ、被覆電線２の外形形状を断面略円形に形成している。 The covered electric wire 2 is composed of a conducting wire portion 2b and a covering portion 2a. The conducting wire portion 2b is configured by bundling a plurality of linear conducting wires made of a conductive material. The covering portion 2a is made of an insulating material, and the outer shape of the covered electric wire 2 is formed in a substantially circular cross section while covering the outer periphery of the conducting wire portion 2b.

接続端子３は、板状の金属材をメス型端子にプレス加工したもので、基端側（図１の矢印Ａ方向）に、被覆電線２の外周にかしめ接合される端子かしめ部４と、先端側（図１の矢印Ｂ方向）に、相手側のオス型端子（図示せず）に接続される接続部５とが設けられている。 The connection terminal 3 is obtained by pressing a plate-like metal material into a female terminal, and a terminal caulking portion 4 that is caulked and joined to the outer periphery of the covered electric wire 2 on the base end side (in the direction of arrow A in FIG. 1), On the distal end side (in the direction of arrow B in FIG. 1), a connecting portion 5 connected to a male terminal (not shown) on the other side is provided.

端子かしめ部４は、かしめる前の単体の状態では、図４に示すように、両端部４ｂが開いた断面略Ｕ字形状に形成されている。また、端子かしめ部４には、圧接刃６と電線保持部７とが設けられている。 As shown in FIG. 4, the terminal caulking portion 4 is formed in a substantially U-shaped cross section with both end portions 4b open as shown in FIG. The terminal caulking portion 4 is provided with a press contact blade 6 and an electric wire holding portion 7.

圧接刃６は、端子かしめ部４をかしめた際に、被覆電線２の被覆部２ａを貫通して内部の導線部２ｂに電気的に接続される。また、圧接刃６は、端子かしめ部４に開口４ａを形成して、その縁部の一部を内側に向かって折り曲げることにより突設されている。なお、圧接刃６は、開口４ａの端子挿入方向の基端側及び先端側にそれぞれ配置されると共に、端子かしめ部４の軸心を境として対向する部位にも他の一対の圧接刃６が配置されている。 When the terminal caulking portion 4 is caulked, the press contact blade 6 penetrates the covering portion 2a of the covered electric wire 2 and is electrically connected to the internal conductor portion 2b. Further, the press contact blade 6 protrudes by forming an opening 4a in the terminal caulking portion 4 and bending a part of the edge portion inward. The press contact blades 6 are respectively disposed on the proximal end side and the distal end side of the opening 4a in the terminal insertion direction, and another pair of press contact blades 6 are also provided at portions facing each other with the axial center of the terminal caulking portion 4 as a boundary. Has been placed.

電線保持部７は、圧接刃６の端子挿入方向の基端側及び先端側に配置されている。 The electric wire holding portion 7 is disposed on the proximal end side and the distal end side of the press contact blade 6 in the terminal insertion direction.

接続部５は、板状の部材を丸めることで、被覆電線２の外形形状に沿った円筒状に成形されている。そして、円筒部分の内部に相手側接続端子（図示せず）の接続部が挿入される。 The connecting portion 5 is formed into a cylindrical shape along the outer shape of the covered electric wire 2 by rounding a plate-like member. And the connection part of the other party connection terminal (not shown) is inserted in the inside of a cylindrical part.

上記構成において、図４に示すように、当初、端子かしめ部４の両端部４ｂが開いているので、端子かしめ部４内に被覆電線２の一端を挿入した後、かしめ作業によって、両端部４ｂを被覆電線２の外形形状に沿って変形させつつ閉じることにより、図１に示すように、端子かしめ部４を被覆電線２に沿って円筒状に形成する。その結果、電線保持部７が被覆電線２の被覆部２ａに圧接するので、端子かしめ部４と被覆電線２との接合状態が保持される。また、圧接刃６が被覆電線２に圧接して被覆部２ａを貫通することによって、圧接刃６を介して接続端子３が被覆電線２のコア部２ｂと電気的に接続する。 In the above configuration, as shown in FIG. 4, since both end portions 4b of the terminal caulking portion 4 are initially open, after inserting one end of the covered electric wire 2 into the terminal caulking portion 4, both end portions 4b are obtained by caulking work. Is closed while being deformed along the outer shape of the covered electric wire 2 to form the terminal caulking portion 4 in a cylindrical shape along the covered electric wire 2 as shown in FIG. As a result, since the electric wire holding part 7 is press-contacted with the covering part 2a of the covered electric wire 2, the joined state between the terminal caulking part 4 and the covered electric wire 2 is maintained. Further, when the press contact blade 6 is pressed against the covered electric wire 2 and penetrates the covered portion 2 a, the connection terminal 3 is electrically connected to the core portion 2 b of the covered electric wire 2 through the press contact blade 6.

本願の端子かしめ構造１によって接続端子３がかしめられた被覆電線２は、接続端子３がコネクタハウジング（図示せず）内に配設され、相手側コネクタハウジング（図示せず）内に配設された相手側接続端子（図示せず）に電気的に接続される。コネクタハウジングの背面側には、コネクタハウジング、および被覆電線２と密着し、コネクタハウジング内を密封するシール材（図示せず）が配置されている。シール材には、被覆電線２の断面よりも僅かに小さな貫通孔が形成されている。接続端子３が貫通孔を押広げつつ挿通され、貫通孔が被覆電線２に到達したところで、被覆電線２の表面に貫通孔の内周面が密着する。そして、被覆電線２の表面に貫通孔の内周面が密着することで、コネクタハウジング内を密閉する。 In the covered electric wire 2 in which the connection terminal 3 is caulked by the terminal caulking structure 1 of the present application, the connection terminal 3 is arranged in a connector housing (not shown), and is arranged in a mating connector housing (not shown). It is electrically connected to a counterpart connection terminal (not shown). On the back side of the connector housing, a seal material (not shown) that is in close contact with the connector housing and the covered electric wire 2 and seals the inside of the connector housing is disposed. A through hole slightly smaller than the cross section of the covered electric wire 2 is formed in the sealing material. The connection terminal 3 is inserted while expanding the through hole, and when the through hole reaches the covered electric wire 2, the inner peripheral surface of the through hole comes into close contact with the surface of the covered electric wire 2. And the inside of a connector housing is sealed because the inner peripheral surface of a through-hole closely_contact | adheres to the surface of the covered electric wire 2. FIG.

本願の端子かしめ構造１によって被覆電線２にかしめられた接続端子３は、シール材の貫通孔を通過する際に、貫通孔を押広げながら挿入される。このときに、接続端子３の接続部５、および端子かしめ部４に突出する部位がないため、貫通孔を引っ掛けて損傷させることがない。 The connection terminal 3 caulked to the covered electric wire 2 by the terminal caulking structure 1 of the present application is inserted while expanding the through hole when passing through the through hole of the sealing material. At this time, since there is no part which protrudes in the connection part 5 of the connection terminal 3 and the terminal crimping part 4, a through-hole is not caught and damaged.

以上、本発明では、端子かしめ部４を円筒状に形成し、かしめ加工に伴う表面の凹凸発生を抑制したので、接続端子３のハウジングへの着脱時に接続端子３がシール材内を円滑に通過することができ、シール材が損傷せずシール性能を保持でき、したがって、シール材の交換を要せずに接続端子３をハウジングに着脱できる。また、被覆電線２の被覆部２ａの除去（いわゆる皮むき）を要せずに、接続端子３と被覆電線２のコア部２ｂとの電気的接続を行うことができるので、被覆電線２の被覆部２ａをあらかじめ除去する場合と比べて、手間を減らしてコストを抑えることができる。 As described above, in the present invention, the terminal caulking portion 4 is formed in a cylindrical shape to suppress the occurrence of surface unevenness due to caulking, so that the connection terminal 3 smoothly passes through the sealing material when the connection terminal 3 is attached to and detached from the housing. Thus, the sealing material is not damaged and the sealing performance can be maintained. Therefore, the connection terminal 3 can be attached to and detached from the housing without replacement of the sealing material. Moreover, since the connection terminal 3 and the core part 2b of the covered electric wire 2 can be electrically connected without requiring the removal (so-called peeling) of the covered portion 2a of the covered electric wire 2, the covering of the covered electric wire 2 can be performed. Compared with the case where the part 2a is removed in advance, the labor can be reduced and the cost can be reduced.

上記構成によれば、圧接刃６の端子挿入方向の基端側及び先端側に設けた一対の電線保持部７が、それぞれ被覆電線２の被覆部２ａに圧接するので、端子かしめ部４と被覆電線２との接合状態をより確実に保持することができる。 According to the above configuration, the pair of electric wire holding portions 7 provided on the proximal end side and the distal end side in the terminal insertion direction of the press contact blade 6 are in pressure contact with the covering portion 2a of the covered electric wire 2, respectively. The joining state with the electric wire 2 can be held more reliably.

また、接続端子３の接続部５の外形形状を被覆電線の外形形状に沿って円筒状に形成したことによって、被覆電線２から突出する部位が無くなり、さらにシール材を傷付けることなく接続端子３をハウジングに着脱することができる。 Further, by forming the outer shape of the connecting portion 5 of the connecting terminal 3 in a cylindrical shape along the outer shape of the covered electric wire, there is no portion protruding from the covered electric wire 2, and the connecting terminal 3 can be connected without damaging the sealing material. It can be attached to and detached from the housing.

本発明の一実施形態を示し、端子かしめ構造を有するメス型端子の組立斜視図である。It is an assembly perspective view of a female terminal which shows one embodiment of the present invention and has a terminal caulking structure. 本発明の一実施形態を示し、図１の端子かしめ部を拡大して示す軸方向の断面図である。FIG. 2 is an axial sectional view showing an embodiment of the present invention and enlarging a terminal caulking portion of FIG. 1. 本発明の一実施形態を示し、図１の端子かしめ部を拡大して示す軸方向と垂直な方向の断面図である。FIG. 2 is a cross-sectional view in a direction perpendicular to an axial direction showing an embodiment of the present invention and enlarging a terminal caulking portion in FIG. 1. 本発明の一実施形態を示し、端子かしめ部をかしめる前の状態を示す斜視図である。It is a perspective view which shows one Embodiment of this invention and shows the state before crimping a terminal crimping part. 本発明の一実施形態を示し、端子かしめ部をかしめた状態を示す斜視図である。It is a perspective view which shows one Embodiment of this invention and shows the state which crimped the terminal crimping part. 本発明の一実施形態を示し、図５の端子かしめ部を拡大して示す斜視図である。FIG. 6 is a perspective view showing an embodiment of the present invention and enlarging a terminal caulking portion of FIG. 5. 本発明の一実施形態を示し、図５の端子かしめ部を拡大して示す軸方向の断面図である。FIG. 6 is an axial cross-sectional view showing an embodiment of the present invention and enlarging the terminal caulking portion of FIG. 5. 本発明の一実施形態を示し、図５の端子かしめ部を拡大して示す他の軸方向の断面図である。FIG. 6 is a cross-sectional view in another axial direction showing the embodiment of the present invention and enlarging the terminal caulking portion of FIG. 5. 従来例の端子かしめ構造を有する防水コネクタを示す分解断図である。It is a disassembled sectional view which shows the waterproof connector which has the terminal crimping structure of a prior art example.

Explanation of symbols

１…端子かしめ構造
２…被覆電線
２ａ…被覆部
２ｂ…導線部
３…メス型端子（接続端子）
４…端子かしめ部
６…圧接刃
７…電線保持部 DESCRIPTION OF SYMBOLS 1 ... Terminal crimping structure 2 ... Covered electric wire 2a ... Covering part 2b ... Conducting wire part 3 ... Female type terminal (connection terminal)
4 ... Terminal crimping part 6 ... Press contact blade 7 ... Electric wire holding part

Claims

A covered electric wire in which the outer periphery of the linear conducting wire portion is covered with a covering portion;
A terminal caulking portion that is caulked and fixed while covering the outer periphery of the covered electric wire to the base end portion of the connection terminal;
An opening opening in the terminal caulking portion;
A crimping blade projecting by forming the terminal caulking portion and bending a part of the edge of the opening on the inside and a part of the edge toward the inside of the covered electric wire;
The terminal caulking portion is configured, and includes a wire holding portion formed on the proximal end side and the distal end side of the press contact blade,
When caulking the terminal caulking part,
The press contact blade penetrates the coating portion, and the press contact blade and the conductive wire portion are electrically connected,
The wire holding part is pressed and held on the covering part,
A terminal caulking structure, wherein an outer shape of the terminal caulking portion is formed along an outer shape of the covered electric wire.

The terminal caulking structure according to claim 1,
A connecting portion that is electrically connected to the other terminal at the tip of the connecting terminal;
A terminal caulking structure characterized in that the outer shape of the connecting portion is formed along the outer shape of the covered electric wire.