JP6487765B2

JP6487765B2 - Wire with connector

Info

Publication number: JP6487765B2
Application number: JP2015092838A
Authority: JP
Inventors: 貞敏蔵楽; 裕治石谷
Original assignee: Fujikura Ltd
Current assignee: Fujikura Ltd
Priority date: 2015-04-30
Filing date: 2015-04-30
Publication date: 2019-03-20
Anticipated expiration: 2035-04-30
Also published as: JP2016212976A

Description

本発明は、コネクタ付き電線に関するものである。 The present invention relates to an electric wire with a connector.

複数の電線が挿入されたコネクタ本体と、コネクタ本体の後端部に装着されて電線を支持するストレインリリーフと、を備えたコネクタが知られている（例えば特許文献１参照）。このコネクタに取り付けられる電線は、円形の断面形状を有している。また、この電線の断面形状に対応して、ストレインリリーフの貫通孔の断面形状も円形となっている。 There is known a connector including a connector main body into which a plurality of electric wires are inserted, and a strain relief that is attached to a rear end portion of the connector main body and supports the electric wires (see, for example, Patent Document 1). The electric wire attached to this connector has a circular cross-sectional shape. Further, the cross-sectional shape of the through hole of the strain relief is also circular corresponding to the cross-sectional shape of the electric wire.

特開２０１４−２３５７８６号公報JP 2014-235786 A

電線の断面は円形に限られず、例えば、電線が扇形の断面形状を有している場合もあり、こうした複数の電線を束ねることで、全体として円形の断面形状を有する束電線を構成することができる。しかしながら、上記のコネクタでは、ストレインリリーフの貫通孔の断面形状が円形となっているため、扇形の断面形状を有する電線に対応することができない、という問題がある。 The cross section of the electric wire is not limited to a circular shape. For example, the electric wire may have a fan-shaped cross sectional shape. By bundling a plurality of such electric wires, a bundled electric wire having a circular cross sectional shape as a whole can be configured. it can. However, in the above connector, since the cross-sectional shape of the through hole of the strain relief is circular, there is a problem that it is not possible to deal with an electric wire having a fan-shaped cross-sectional shape.

本発明が解決しようとする課題は、非円形の断面形状を有する電線に対応することが可能なコネクタ付き電線を提供することである。 The problem to be solved by the present invention is to provide an electric wire with a connector that can cope with an electric wire having a non-circular cross-sectional shape.

［１］本発明に係るコネクタ付き電線は、非円形の断面形状を有する複数の電線と、複数の前記電線の端部に取り付けられたコネクタと、を備え、前記コネクタは、前記電線の先端にそれぞれ接続された複数の端子と、前記端子及び前記電線をそれぞれ収容する複数の収容孔を有するコネクタ本体と、前記電線が挿入された挿入孔をそれぞれ有すると共に、前記収容孔にそれぞれ回転可能に挿入されている複数の電線保持部材と、を備えており、前記挿入孔は、前記電線の断面形状に対応した非円形の断面形状を有し、前記電線保持部材は、弾性材から構成されていると共に、前記電線の外周面及び前記収容孔の内周面に密着しているシール部と、硬質材から構成された本体部と、を有しており、前記本体部は、前記シール部に対して後端側に位置していると共に、前記シール部の第１の外径に対して相対的に小さな第２の外径を有する後端部分を少なくとも含むコネクタ付き電線である。 [1] An electric wire with a connector according to the present invention includes a plurality of electric wires having a non-circular cross-sectional shape and a connector attached to end portions of the plurality of electric wires, and the connector is attached to a tip of the electric wire. A plurality of terminals connected to each other, a connector body having a plurality of receiving holes for receiving the terminals and the electric wires, respectively, and an insertion hole into which the electric wires are inserted, respectively, and rotatably inserted into the receiving holes, respectively. A plurality of electric wire holding members, wherein the insertion hole has a non-circular cross-sectional shape corresponding to the cross-sectional shape of the electric wire, and the electric wire holding member is made of an elastic material. And a seal portion that is in close contact with the outer peripheral surface of the electric wire and the inner peripheral surface of the receiving hole, and a main body portion made of a hard material, and the main body portion is in contact with the seal portion. Rear end side Together are located, the trailing end portion having a relatively small second outer diameter relative to the first outer diameter of the sealing portion is a connector with electric wire including at least.

［２］上記発明において、前記コネクタは、前記収容孔の後端側の開口に固定されたストッパを有しており、前記ストッパは、前記電線の断面形状に対して相対的に大きく、且つ、前記本体部の前記第２の外径に対して相対的に小さな断面形状の内孔を有してもよい。 [2] In the above invention, the connector has a stopper fixed to the opening on the rear end side of the accommodation hole, and the stopper is relatively large with respect to a cross-sectional shape of the electric wire, and You may have an internal hole of a cross-sectional shape relatively small with respect to the said 2nd outer diameter of the said main-body part.

［３］上記発明において、前記本体部は、前記後端部分から先端側に向かって延在し、前記シール部に埋設された埋設部分を含んでおり、前記シール部は、前記電線の外周面と接触し前記電線の外周面に沿った筒状の第１の接触部分と、前記収容孔の内周面と接触して前記収容孔の内周面に沿った筒状の第２の接触部分と、を有しており、前記埋設部分は、前記第１の接触部分と前記第２の接触部分との間に介在していてもよい。 [3] In the above invention, the main body portion extends from the rear end portion toward the front end side, and includes an embedded portion embedded in the seal portion, and the seal portion is an outer peripheral surface of the electric wire. A cylindrical first contact portion along the outer peripheral surface of the electric wire, and a cylindrical second contact portion along the inner peripheral surface of the receiving hole in contact with the inner peripheral surface of the receiving hole And the embedded portion may be interposed between the first contact portion and the second contact portion.

［４］上記発明において、前記シール部は、前記第１の接触部分と前記第２の接触部分が部分的に連結された連結箇所を有し、前記第１の接触部分は、前記電線の外周面の法線方向に第１の厚みを有し、前記第２の接触部分は、前記収容孔の内周面の法線方向に第２の厚みを有しており、前記第１の厚みと前記第２の厚みとの和は、前記連結箇所における前記収容孔の内周面の法線方向の厚みと実質的に等しくてもよい。 [4] In the above invention, the seal portion has a connection portion where the first contact portion and the second contact portion are partially connected, and the first contact portion is an outer periphery of the electric wire. A first thickness in a normal direction of the surface, and the second contact portion has a second thickness in a normal direction of an inner peripheral surface of the accommodation hole, and the first thickness and The sum with said 2nd thickness may be substantially equal to the thickness of the inner peripheral surface of the said accommodation hole in the said connection location in the normal line direction.

［５］上記発明において、前記本体部は、前記埋設部分から先端側に向かって延在している先端部分を含んでおり、前記先端部分は、前記シール部の前記第１の外径に対して相対的に小さな第３の外径を有していてもよい。 [5] In the above invention, the main body portion includes a tip portion extending from the embedded portion toward the tip side, and the tip portion corresponds to the first outer diameter of the seal portion. And may have a relatively small third outer diameter.

［６］上記発明において、前記先端部分は、先端側に向かうに従って細くなるテーパ面を有してもよい。 [6] In the above invention, the tip portion may have a tapered surface that becomes narrower toward the tip side.

［７］上記発明において、前記電線は、扇形の断面形状をそれぞれ有し、複数の前記電線は、複数の前記電線が束ねられることで、全体として円形の断面形状を有ししてもよい。 [7] In the above invention, the electric wires may each have a sector cross-sectional shape, and the plurality of electric wires may have a circular cross-sectional shape as a whole by bundling the plurality of electric wires.

［８］上記発明において、前記コネクタ付き電線は、３本の前記電線と、３つの前記電線保持部材と、を備え、前記コネクタ本体は、並列に配置された３つの前記収容孔を有しており、３つの前記電線保持部材は、中央に位置する第１の電線保持部材と、前記第１の電線保持部材の両側に位置する第２及び第３の電線保持部材と、を含んでおり、前記第１の電線保持部材は、前記挿入孔の断面扇形の頂点が第１の方向に向くように、前記収容孔に装着され、前記第２の電線保持部材は、前記挿入孔の断面扇形の頂点が前記第１の方向に対して実質的に反対の第２の方向に向くように、前記収容孔に装着され、前記第３の電線保持部材も、前記挿入孔の断面扇形の頂点が前記第２の方向に向くように、前記収容孔に装着されていてもよい。 [8] In the above invention, the electric wire with a connector includes the three electric wires and the three electric wire holding members, and the connector main body has the three receiving holes arranged in parallel. The three electric wire holding members include a first electric wire holding member located in the center, and second and third electric wire holding members located on both sides of the first electric wire holding member, The first electric wire holding member is attached to the receiving hole so that the apex of the sectional fan shape of the insertion hole faces the first direction, and the second electric wire holding member has a sectional fan shape of the insertion hole. The third electric wire holding member is mounted on the receiving hole so that the apex is in a second direction substantially opposite to the first direction, and the third electric wire holding member also has an apex having a sectional fan shape in the insertion hole. You may mount | wear with the said accommodation hole so that it may face in a 2nd direction.

本発明では、挿入孔が電線の断面形状に対応した非円形の断面形状を有していると共に、電線保持部材がコネクタ本体に対して回転することが可能となっている。このため、本発明では、非円形の断面形状を有する電線に対応することができる。 In the present invention, the insertion hole has a non-circular cross-sectional shape corresponding to the cross-sectional shape of the electric wire, and the electric wire holding member can rotate with respect to the connector main body. For this reason, in this invention, it can respond to the electric wire which has a non-circular cross-sectional shape.

図１は、本発明の実施形態におけるコネクタ付き電線を示す斜視図である。FIG. 1 is a perspective view showing an electric wire with a connector in an embodiment of the present invention. 図２は、本発明の実施形態におけるコネクタ付き電線を示す分解斜視図である。FIG. 2 is an exploded perspective view showing the electric wire with connector in the embodiment of the present invention. 図３は、本実施形態における束電線を示す図であり、図１のIII-III線に沿った断面図である。FIG. 3 is a view showing the bundled electric wires in the present embodiment, and is a cross-sectional view taken along the line III-III in FIG. 図４は、図１のIV-IV線に沿った断面図である。FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 図５は、図４のV-V線に沿った断面図である。FIG. 5 is a cross-sectional view taken along line VV in FIG. 図６は、本発明の実施形態における電線保持部材を示す斜視図である。FIG. 6 is a perspective view showing an electric wire holding member in the embodiment of the present invention. 図７は、図６のVII-VII線に沿った断面図である。7 is a cross-sectional view taken along line VII-VII in FIG. 図８は、図６のVIII-VIII線に沿った断面図である。FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. 図９は、本発明の実施形態におけるコネクタの背面図である。FIG. 9 is a rear view of the connector according to the embodiment of the present invention. 図１０は、本発明の実施形態におけるストッパの断面図である。FIG. 10 is a cross-sectional view of the stopper in the embodiment of the present invention.

以下、本発明の実施形態を図面に基づいて説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１及び図２は本実施形態におけるコネクタ付き電線の斜視図及び分解斜視図、図３は本実施形態における束電線の断面図、図４及び図５は本実施形態におけるコネクタ付き電線の断面図、図６は本実施形態における電線保持部材を示す斜視図、図７及び図８は本実施形態における電線保持部材を示す断面図、図９は本実施形態におけるコネクタの背面図、図１０は本実施形態におけるストッパの断面図である。 1 and 2 are a perspective view and an exploded perspective view of an electric wire with a connector in this embodiment, FIG. 3 is a cross-sectional view of a bundled electric wire in this embodiment, and FIGS. 4 and 5 are cross-sectional views of an electric wire with a connector in this embodiment. 6 is a perspective view showing an electric wire holding member in the present embodiment, FIGS. 7 and 8 are sectional views showing the electric wire holding member in the present embodiment, FIG. 9 is a rear view of the connector in the present embodiment, and FIG. It is sectional drawing of the stopper in embodiment.

本実施形態におけるコネクタ付き電線１は、図１及び図２に示すように、束電線１０と、当該束電線１０の先端に取り付けられたコネクタ３０と、を備えている。このコネクタ３０が相手方のコネクタ（不図示）に嵌合することで、例えば電気自動車の電動モータ、バッテリ、インバータ等の機器に当該コネクタ付き電線１が電気的に接続される。 As shown in FIGS. 1 and 2, the electric wire with connector 1 in this embodiment includes a bundled electric wire 10 and a connector 30 attached to the tip of the bundled electric wire 10. By fitting the connector 30 into a mating connector (not shown), the connector-equipped electric wire 1 is electrically connected to a device such as an electric motor, a battery, or an inverter of an electric vehicle, for example.

なお、図１に示すように、本実施形態において、コネクタ３０が相手方のコネクタに嵌合する方向を「先端側」と称し、コネクタ３０を相手方のコネクタから解除する方向を「後端側」と称する。 As shown in FIG. 1, in this embodiment, the direction in which the connector 30 is fitted to the mating connector is referred to as “front end side”, and the direction in which the connector 30 is released from the mating connector is referred to as “rear end side”. Called.

束電線１０は、複数（本実施形態では３本）の電線２０を備えており、例えば、電気自動車のパワーケーブル等として用いられる。この束電線１０は、全体として円形の断面形状を有している。この束電線１０は、円形の断面形状を有する３本の電線の被覆層を加熱して軟化させた状態で、当該電線を束ねて圧縮することで形成されている。このため、図３に示すように、束電線１０を構成しているそれぞれの電線２０は、中心角が１２０°程度の扇形の断面形状を有している。そして、相互に束ねられた３本の電線２０の断面形状が相互に補完し合うことで、束電線１０の円形の断面形状を形成している。 The bundled electric wire 10 includes a plurality (three in this embodiment) of electric wires 20 and is used as, for example, a power cable of an electric vehicle. The bundled electric wire 10 has a circular cross-sectional shape as a whole. The bundled electric wire 10 is formed by bundling and compressing the electric wires in a state where the covering layers of the three electric wires having a circular cross-sectional shape are heated and softened. For this reason, as shown in FIG. 3, each electric wire 20 which comprises the bundled electric wire 10 has a fan-shaped cross-sectional shape whose center angle is about 120 degrees. And the cross-sectional shape of the three electric wires 20 bundled mutually complements mutually, The circular cross-sectional shape of the bundle electric wire 10 is formed.

なお、図３では、３本の電線２０のうちの１つの断面のみを詳細に図示しており、他の２本の電線２０の断面は概略のみを図示している。また、束電線１０を構成する電線２０の数は特に限定されない。電線２０の扇形の断面形状の中心角も１２０°に特に限定されず、束電線１０を構成する電線２０の数に応じて設定される。また、束電線１０の製造方法も特に限定されず、扇形の断面形状を有する電線２０を複数本用意し、当該電線２０を束ねて、円形の断面形状を有する束電線１０を形成してもよい。 In FIG. 3, only one cross section of the three electric wires 20 is illustrated in detail, and the cross section of the other two electric wires 20 is illustrated only schematically. Moreover, the number of the electric wires 20 which comprise the bundled electric wire 10 is not specifically limited. The central angle of the sector cross-sectional shape of the electric wire 20 is not particularly limited to 120 °, and is set according to the number of electric wires 20 constituting the bundled electric wire 10. Moreover, the manufacturing method of the bundled electric wire 10 is not particularly limited, and a plurality of electric wires 20 having a fan-shaped cross-sectional shape may be prepared, and the electric wires 20 may be bundled to form the bundled electric wire 10 having a circular cross-sectional shape. .

それぞれの電線２０は、図３に示すように、中心導体２１と、被覆層２２と、を備えている。中心導体２１は、複数の素線２１１を撚り合わせることで形成された撚線で構成されている。素線２１１は、例えば、アルミニウム（Ａｌ）、銅（Ｃｕ）、又は、それらの合金等の高い導電性を有する金属材料で構成されている。被覆層２２は、電気絶縁性を有する樹脂材料から構成されており、中心導体２１の外周を覆っている。なお、図１及び図２に示すように、束電線１０の先端部分では、３本の電線２０に分割されており、それぞれの電線２０は、扇形の断面形状を有している。 As shown in FIG. 3, each electric wire 20 includes a central conductor 21 and a covering layer 22. The center conductor 21 is composed of a stranded wire formed by twisting a plurality of strands 211 together. The strand 211 is comprised with the metal material which has high electroconductivity, such as aluminum (Al), copper (Cu), or those alloys, for example. The covering layer 22 is made of a resin material having electrical insulating properties and covers the outer periphery of the central conductor 21. As shown in FIGS. 1 and 2, the bundled wire 10 is divided into three wires 20 at the distal end portion, and each wire 20 has a fan-shaped cross-sectional shape.

本実施形態における「扇形の断面形状」は、１つの円弧部とその両端を通る２つの半径部とで囲まれた形状であり、直線状の半径部同士の交点が円弧状となっていたり、半径部と円弧部の交点が円弧状となっているような略扇形の断面形状も含む。また、本実施形態における「円形の断面形状」には、真円のみならず楕円も含む。なお、電線２０の断面形状は非円形であれば扇形に特に限定されない。 The “fan-shaped cross-sectional shape” in the present embodiment is a shape surrounded by one arc portion and two radius portions passing through both ends thereof, and the intersection of the linear radius portions is an arc shape, It also includes a substantially sector cross-sectional shape in which the intersection of the radius portion and the arc portion is an arc shape. The “circular cross-sectional shape” in the present embodiment includes not only a perfect circle but also an ellipse. In addition, if the cross-sectional shape of the electric wire 20 is non-circular, it will not be specifically limited to a fan shape.

コネクタ３０は、図１及び図２に示すように、電線２０にそれぞれ接続された複数（本実施形態では３本）の端子４０と、当該端子４０を保持するハウジング５０と、複数（本実施形態では３本）の電線保持部材６０Ａ〜６０Ｃと、を備えている。本実施形態におけるハウジング５０が、本発明におけるコネクタ本体の一例に相当する。なお、コネクタ本体が、ハウジングに加えて、シールドシェル等を含んでもよい。 As shown in FIGS. 1 and 2, the connector 30 includes a plurality (three in this embodiment) of terminals 40 connected to the electric wires 20, a housing 50 that holds the terminals 40, and a plurality of (this embodiment). 3) of wire holding members 60A to 60C. The housing 50 in the present embodiment corresponds to an example of a connector main body in the present invention. Note that the connector body may include a shield shell or the like in addition to the housing.

コネクタ３０が有する端子４０の数は特に限定されず、コネクタ３０に取り付けられる電線２０の本数に応じて設定される。同様に、コネクタ３０が有する電線保持部材６０の数は特に限定されず、コネクタ３０に取り付けられる電線２０の本数に応じて設定される。本実施形態において、第１〜第３の電線保持部材６０Ａ〜６０Ｃを、電線保持部材６０と総称する。 The number of terminals 40 included in the connector 30 is not particularly limited, and is set according to the number of wires 20 attached to the connector 30. Similarly, the number of the electric wire holding members 60 included in the connector 30 is not particularly limited, and is set according to the number of the electric wires 20 attached to the connector 30. In the present embodiment, the first to third electric wire holding members 60 A to 60 C are collectively referred to as the electric wire holding member 60.

それぞれの端子４０は、上述の中心導体２１を構成する材料と同様の材料で構成されている。この端子４０は、図４及び図５に示すように、その先端側の部分に端子接続部４１を有すると共に、その後端側の部分に電線接続部４２を有している。 Each terminal 40 is made of the same material as that of the central conductor 21 described above. As shown in FIGS. 4 and 5, the terminal 40 has a terminal connection portion 41 at a tip end portion thereof and a wire connection portion 42 at a rear end portion thereof.

端子接続部４１の先端部分には、略箱形状の嵌合部４１１が形成されている。この嵌合部４１１内には、弓状に屈曲した板ばね４１２が設けられている。この嵌合部４１１には、相手方コネクタの板状の端子が挿入可能となっており、当該相手方端子が板ばね４１２によって箱状の嵌合部４１１の内壁面に押し付けられながら当該嵌合部４１１内に挿入されることで、端子４０と相手方端子とが電気的に導通する。また、この嵌合部４１１の底面４１６には、当該底面４１４を貫通する係止孔４１７が形成されている。この係止孔４１７には、ハウジング５０のランス５２１（後述）が係止している。 A substantially box-shaped fitting portion 411 is formed at the distal end portion of the terminal connection portion 41. A leaf spring 412 bent in an arc shape is provided in the fitting portion 411. A plate-like terminal of the mating connector can be inserted into the fitting portion 411, and the mating portion 411 is pressed against the inner wall surface of the box-like fitting portion 411 by the leaf spring 412. By being inserted into the terminal, the terminal 40 and the counterpart terminal are electrically connected. Further, a locking hole 417 penetrating the bottom surface 414 is formed on the bottom surface 416 of the fitting portion 411. A lance 521 (described later) of the housing 50 is locked in the locking hole 417.

上述の電線２０の先端部分では、被覆層２２が剥かれて中心導体２１が露出している。この露出した中心導体２１は、超音波溶接や抵抗溶接等により端子４０の電線接続部４２に接合されている。また、この電線接続部４２には、一対のバレル４２１，４２２が立設されている。当該バレル４２１，４２２を電線２０の被覆層２２に加締めることで、端子４０が電線２０に固定されている。 At the tip end portion of the electric wire 20 described above, the covering layer 22 is peeled off and the central conductor 21 is exposed. The exposed center conductor 21 is joined to the wire connecting portion 42 of the terminal 40 by ultrasonic welding, resistance welding, or the like. In addition, a pair of barrels 421 and 422 are erected on the electric wire connection portion 42. The terminal 40 is fixed to the electric wire 20 by crimping the barrels 421 and 422 to the coating layer 22 of the electric wire 20.

ハウジング５０は、樹脂材料等の電気絶縁性を有する材料から構成されている。このハウジング５０は、図４及び図５に示すように、３つの収容孔５１Ａ〜５１Ｃを有している。なお、本実施形態において、第１〜第３の収容孔５１Ａ〜５１Ｃを、収容孔５１と総称する。 The housing 50 is made of an electrically insulating material such as a resin material. As shown in FIGS. 4 and 5, the housing 50 has three accommodation holes 51 A to 51 C. In the present embodiment, the first to third accommodation holes 51 A to 51 C are collectively referred to as the accommodation hole 51.

それぞれの収容孔５１は、Ｘ方向に沿ってハウジング５０を貫通している。３つの収容孔５１は、当該３つの収容孔５１が相互に実質的に平行に延在するように、並列に配置されている。それぞれの収容孔５１には、電線２０と、当該電線２０に接合された端子４０と、が収容されている。当該収容孔５１は、その先端に小径部５２を有していると共に、小径部５２の後端側に大径部５３を有している。 Each accommodation hole 51 penetrates the housing 50 along the X direction. The three accommodation holes 51 are arranged in parallel so that the three accommodation holes 51 extend substantially parallel to each other. Each accommodation hole 51 accommodates the electric wire 20 and the terminal 40 joined to the electric wire 20. The accommodation hole 51 has a small diameter portion 52 at the tip thereof and a large diameter portion 53 on the rear end side of the small diameter portion 52.

小径部５２には、端子４０の嵌合部４１１が収容されていると共に、弾性変形可能なランス５２１が設けられている。このランス５２１が嵌合部４１１の係止孔４１７に係止すると共に、嵌合部４１１の上面４１３及び側面４１４，４１５に小径部５２の内壁面がそれぞれ密着することで、端子４０がハウジング５０に固定されている。また、この小径部５２の先端には開口５２２が形成されており、当該開口５２２を介して、相手方端子が端子４０の嵌合部４１１内に進入することが可能となっている。 The small diameter portion 52 accommodates the fitting portion 411 of the terminal 40 and is provided with a lance 521 that can be elastically deformed. The lance 521 is locked in the locking hole 417 of the fitting portion 411, and the inner wall surface of the small diameter portion 52 is in close contact with the upper surface 413 and the side surfaces 414 and 415 of the fitting portion 411. It is fixed to. An opening 522 is formed at the tip of the small diameter portion 52, and the counterpart terminal can enter the fitting portion 411 of the terminal 40 through the opening 522.

大径部５３は、小径部５２に連通しており、小径部５２の内径に対して相対的に大きな内径を有している。この大径部５２には、端子４０において嵌合部４１１よりも後端側の部分と、電線２０の先端部分と、が収容されている。この大径部５３は、第１の内径Ｒ_ｉ１の円形の断面形状を有しており、小径部５２の後端に連通していると共にハウジング５０の後端側に向かって開口している。本実施形態における収容孔５１の後端側の開口５３２が、本発明における収容孔の後端側の開口の一例に相当する。 The large diameter portion 53 communicates with the small diameter portion 52 and has a relatively large inner diameter with respect to the inner diameter of the small diameter portion 52. The large-diameter portion 52 accommodates a portion of the terminal 40 on the rear end side of the fitting portion 411 and a tip portion of the electric wire 20. The large diameter portion 53 has a circular cross-sectional shape with a first inner diameter R _i1 , communicates with the rear end of the small diameter portion 52 and opens toward the rear end side of the housing 50. The opening 532 on the rear end side of the accommodation hole 51 in the present embodiment corresponds to an example of the opening on the rear end side of the accommodation hole in the present invention.

また、このハウジング５０の外周面５３３における後端部分には、当該ハウジング５０の外側に向かって突出する複数の突起５３４が設けられている。１つの開口５３２に対して２つの突起５３４が割り当てられており、背面視（図９参照）において、当該２つの突起５３４は、収容孔５１の後端側の開口５３２を中心として対照な位置に配置されている。この突起５３４は、ストッパ９０のスリット９２２（後述）に係止している。 In addition, a plurality of protrusions 534 that protrude toward the outside of the housing 50 are provided at the rear end portion of the outer peripheral surface 533 of the housing 50. Two protrusions 534 are assigned to one opening 532, and in the rear view (see FIG. 9), the two protrusions 534 are in a contrasting position around the opening 532 on the rear end side of the accommodation hole 51. Has been placed. The protrusion 534 is engaged with a slit 922 (described later) of the stopper 90.

電線保持部材６０は、従来のワイヤシールとストレインリリーフを一体化した部材である。この電線保持部材６０は、図４〜図８に示すように、電線２０が挿入された挿入孔７１１，８１１，８２１を有すると共に、ハウジング５０の収容孔５１に回転可能に挿入されており、シール部７０と、本体部８０と、を備えている。なお、本実施形態における電線保持部材６０の挿入孔７１１，８１１，８２１が、本発明における電線保持部材の挿入孔の一例に相当する。 The electric wire holding member 60 is a member in which a conventional wire seal and strain relief are integrated. As shown in FIGS. 4 to 8, the electric wire holding member 60 has insertion holes 711, 811, and 821 into which the electric wires 20 are inserted, and is rotatably inserted into the accommodation hole 51 of the housing 50. Part 70 and main body part 80. In addition, the insertion holes 711, 811 and 821 of the electric wire holding member 60 in the present embodiment correspond to an example of the insertion holes of the electric wire holding member in the present invention.

シール部７０は、従来のワイヤシールと同様の機能を有している。すなわち、シール部７０は、電線２０の外周面２０ａに密着すると共に、ハウジング５０の収容孔５１の内周面５３１に密着することで、電線２０とハウジング５０との間をシールしている。 The seal part 70 has the same function as a conventional wire seal. That is, the seal portion 70 is in close contact with the outer peripheral surface 20 a of the electric wire 20, and is in close contact with the inner peripheral surface 531 of the housing hole 51 of the housing 50, thereby sealing between the electric wire 20 and the housing 50.

これに対し、本体部８０は、従来のストレインリリーフと同様の機能を有している。すなわち、本体部８０は、電線２０を保持して当該電線２０の姿勢をハウジング５０に対して矯正することで、電線２０がハウジング５０に傾斜した状態で挿入されてしまう事態（いわゆる電線２０のこじれ）が発生するのを抑制している。 On the other hand, the main body 80 has a function similar to that of a conventional strain relief. That is, the main body 80 holds the electric wire 20 and corrects the posture of the electric wire 20 with respect to the housing 50, so that the electric wire 20 is inserted into the housing 50 in an inclined state (so-called electric wire 20 twisting). ) Is suppressed.

シール部７０は、図６〜図８に示すように、筒状の第１の接触部分７１と、当該第１の接触部分７１を囲繞する筒状の第２の接触部分７２と、を備えている。 As shown in FIGS. 6 to 8, the seal portion 70 includes a cylindrical first contact portion 71 and a cylindrical second contact portion 72 that surrounds the first contact portion 71. Yes.

第１の接触部分７１は、電線１０の外周面２０ａ（図４及び図５参照）に沿った扇形の筒形状を有している。この第１の接触部分７１には、シール部７０を貫通する第１の挿入孔７１１が形成されている。この第１の挿入孔７１１は、図７に示すように、一対の直線７１１ａ，７１１ｂと円弧７１１ｃから構成された扇形の断面形状を有しており、上述の電線１０に対応した扇形の断面形状を有している。一対の直線７１１ａ，７１１ｂは一方の端部で１２０°程度の角度で交わっており、その交点が頂点７１１ｄを形成している。一方、直線７１１ａ，７１１ｂの他方の端部は、円弧７１１ｃによって接続されている。 The first contact portion 71 has a fan-shaped cylindrical shape along the outer peripheral surface 20a of the electric wire 10 (see FIGS. 4 and 5). A first insertion hole 711 that penetrates the seal portion 70 is formed in the first contact portion 71. As shown in FIG. 7, the first insertion hole 711 has a fan-shaped cross-sectional shape composed of a pair of straight lines 711 a and 711 b and an arc 711 c, and has a fan-shaped cross-sectional shape corresponding to the electric wire 10 described above. have. The pair of straight lines 711a and 711b intersect at an angle of about 120 ° at one end, and the intersection forms a vertex 711d. On the other hand, the other ends of the straight lines 711a and 711b are connected by an arc 711c.

この第１の挿入孔７１１の内周面には、当該内周面の全周に亘って凸状のリップ７１２が形成されており、第１の挿入孔７１１に挿入された電線２０の外周面２０ａに、第１の接触部分７１が密着している。この第１の接触部分７１は、電線２０の外周面２０ａの法線方向に沿って第１の厚みｔ_ａ１，ｔ_ａ２を有している。 A convex lip 712 is formed on the inner circumferential surface of the first insertion hole 711 over the entire circumference of the inner circumferential surface, and the outer circumferential surface of the electric wire 20 inserted into the first insertion hole 711. The first contact portion 71 is in close contact with 20a. The first contact portion 71 has first thicknesses t _a1 and t _a2 along the normal direction of the outer peripheral surface 20 a of the electric wire 20.

なお、この第１の厚みｔ_ａ１，ｔ_ａ２には、電線保持部材６０の挿入孔７１１，８１１，８２１内に電線２０を挿入した際に変形するリップ７１２の厚みも加味されている。また、第１の接触部分７１の厚みは全周に亘って均一である必要はなく、ｔ_ａ１≒ｔ_ａ２であればよい。 The first thicknesses t _a1 and t _a2 include the thickness of the lip 712 that is deformed when the electric wire 20 is inserted into the insertion holes 711, 811, and 821 of the electric wire holding member 60. Further, the thickness of the first contact portion 71 does not have to be uniform over the entire circumference, and may be t _a1 ≈t _a2 .

第２の接触部分７２は、ハウジング５０の収容孔５１の内周面５３１に沿った円筒形状を有しており、当該収容孔５１の第１の内径Ｒ_ｉ１に対して若干大きな第１の外径Ｒ_ｏ１を有している（Ｒ_ｏ１＞Ｒ_ｉ１）。この第２の接触部分７２の外周面には、当該外周面の全周に亘って凸状のリップ７２１が形成されており、電線保持部材６０が挿入された収容孔５１の内周面５３１に、第２の接触部分７２が密着している。この第２の接触部分７２は、収容孔５１の内周面５３１の法線方向に沿って第２の厚みｔ_ｂ１，ｔ_ｂ２を有している。 The second contact portion 72 has a cylindrical shape along the inner peripheral surface 531 of the housing hole 51 of the housing 50, and the first outer portion is slightly larger than the first inner diameter R _i1 of the housing hole 51. It has a diameter R _o1 (R _o1 > R _i1 ). A convex lip 721 is formed on the outer peripheral surface of the second contact portion 72 over the entire circumference of the outer peripheral surface, and the inner peripheral surface 531 of the accommodation hole 51 into which the wire holding member 60 is inserted. The second contact portion 72 is in close contact. The second contact portion 72 has second thicknesses t _b1 and t _b2 along the normal direction of the inner peripheral surface 531 of the accommodation hole 51.

なお、第１の外径Ｒ_ｏ１には、電線保持部材６０をハウジング５０の収容孔５１内に挿入した際に変形するリップ７１２の厚みも加味されている。また、第２の厚みｔ_ｂ１，ｔ_ｂ２にも、電線保持部材６０をハウジング５０の収容孔５１内に挿入した際に変形するリップ７１２の厚みも加味されている。さらに、第２の接触部分７２の厚みも全周に亘って均一である必要はなく、ｔ_ｂ１≒ｔ_ｂ２であればよい。 In addition, the thickness of the lip 712 that is deformed when the wire holding member 60 is inserted into the housing hole 51 of the housing 50 is also taken into consideration in the first outer diameter _Ro1 . Further, the thickness of the lip 712 that is deformed when the wire holding member 60 is inserted into the accommodation hole 51 of the housing 50 is also taken into consideration in the second thicknesses t _b1 and t _b2 . Further, the thickness of the second contact portion 72 does not need to be uniform over the entire circumference, and may be t _b1 ≈t _b2 .

第１の接触部分７１と第２の接触部分７２は、２つの連結箇所７３で部分的に連結されており、第１の接触部分７１と第２の接触部分７２との間には、当該シール部７０を貫通する２つの貫通孔７４が形成されている。この貫通孔７４には、本体部８０の埋設部分８３（後述）が埋設されている。この連結箇所７３は、収容孔５１の内周面５３１の法線方向に沿って第３の厚みｔ_ｃを有している。 The first contact portion 71 and the second contact portion 72 are partially connected at two connection points 73, and the seal is provided between the first contact portion 71 and the second contact portion 72. Two through holes 74 penetrating the portion 70 are formed. An embedded portion 83 (described later) of the main body 80 is embedded in the through hole 74. The connection portion 73 has a third thickness t _c along the normal direction of the inner peripheral surface 531 of the accommodation hole 51.

本実施形態では、第１の厚みと第２の厚みとの和が、第３の厚みと実質的に等しくなっており、例えば、第１の厚みと第２の厚みとの和が、第３の厚みの９５％〜１０５％程度となっている。すなわち、第１の厚みと第２の厚みの和と第３の厚みとの関係は、ｔ_ｃ≒ｔ_ａ１＋ｔ_ｂ１≒ｔ_ａ２＋ｔ_ｂ２となっている。これにより、電線２０の外周面２０ａに対するシール部７０の接触圧を均一にすると共に、ハウジング５０の収容孔５１の内周面５３１に対するシール部７０の接触圧を均一にすることができ、シール部７０の良好なシール性能を確保することができる。 In the present embodiment, the sum of the first thickness and the second thickness is substantially equal to the third thickness. For example, the sum of the first thickness and the second thickness is equal to the third thickness. The thickness is about 95% to 105%. That is, the relationship between the sum of the first thickness, the second thickness, and the third thickness is t _c ≈t _a1 + t _b1 ≈t _a2 + t _b2 . Thereby, while making the contact pressure of the seal part 70 with respect to the outer peripheral surface 20a of the electric wire 20 uniform, the contact pressure of the seal part 70 with respect to the inner peripheral surface 531 of the housing hole 51 of the housing 50 can be made uniform. A good sealing performance of 70 can be ensured.

本体部８０は、図６〜図８に示すように、後端部分８１、先端部分８２、及び、埋設部分８３を有している。後端部分８１は、当該本体部８０において後端に位置しているのに対し、先端部分８２は、当該本体部８０において先端に位置している。埋設部分８３は、後端部分８１と先端部分８２との間に介在しており、後端部分８１と先端部分８２は、埋設部分８３を介して一体的に連結されている。 As shown in FIGS. 6 to 8, the main body 80 includes a rear end portion 81, a front end portion 82, and an embedded portion 83. The rear end portion 81 is located at the rear end in the main body portion 80, while the front end portion 82 is located at the front end in the main body portion 80. The embedded portion 83 is interposed between the rear end portion 81 and the front end portion 82, and the rear end portion 81 and the front end portion 82 are integrally connected via the embedded portion 83.

後端部分８１は、ハウジング５０の収容孔５１の第１の内径Ｒ_ｉ１に対して若干小さな第２の外径Ｒ_ｏ２の円環形状を有している（Ｒ_ｏ２＜Ｒ_ｉ１）。この後端部分８１は、上述の電線２０の断面形状に対応した扇形の断面形状の第２の挿入孔８１１を有している。この第２の挿入孔８１１は、上述のシール部７０の第１の挿入孔７１１と断面扇形の姿勢が一致するように、当該第１の挿入孔７１１と同軸上に配置されており、当該第１の挿入孔７１１に連通している。 The rear end portion 81 has an annular shape with a second outer diameter R _o2 that is slightly smaller than the first inner diameter R _i1 of the housing hole 51 of the housing 50 (R _o2 <R _i1 ). The rear end portion 81 has a second insertion hole 811 having a fan-shaped cross section corresponding to the cross section of the electric wire 20 described above. The second insertion hole 811 is arranged coaxially with the first insertion hole 711 so that the first insertion hole 711 of the above-described seal portion 70 and the sectional fan shape coincide with each other. 1 insertion hole 711.

先端部分８２も、後端部分８１と同様に、ハウジング５０の収容孔５１の第１の内径Ｒ_ｉ１に対して若干小さな第３の外径Ｒ_ｏ３の円環形状を有している（Ｒ_ｏ３＜Ｒ_ｉ１）。なお、本実施形態では、この第３の外径Ｒ_ｏ３は、上述の後端部分８１第２の外径Ｒ_ｏ２と実質的に同一となっているが（Ｒ_ｏ３≒Ｒ_ｏ２）、特にこれに限定されない。この先端部分８２も、上述の電線２０の断面形状に対応した扇形の断面形状の第３の挿入孔８２１を有している。この第３の挿入孔８２１は、上述のシール部７０の第１の挿入孔７１１と断面扇形の姿勢が一致するように、当該第１の挿入孔７１１と同軸上に配置されており、当該第１の挿入孔７１１に連通している。 Similarly to the rear end portion 81, the front end portion 82 has an annular shape with a third outer diameter R _o3 that is slightly smaller than the first inner diameter R _i1 of the housing hole 51 of the housing 50 (R _o3 <R _i1 ). In the present embodiment, the third outer diameter R _o3 is substantially the same as the second outer diameter R _o2 of the rear end portion 81 described above (R _{o3 ≈R} _o2 ). It is not limited to. The distal end portion 82 also has a third insertion hole 821 having a sector cross-sectional shape corresponding to the cross-sectional shape of the electric wire 20 described above. The third insertion hole 821 is arranged coaxially with the first insertion hole 711 so that the first insertion hole 711 of the above-described seal portion 70 and the sectional fan shape coincide with each other. 1 insertion hole 711.

また、この先端部分８２は、先端側に向かうに従って漸次的に細くなるテーパ面８２２を先端に有している。これにより、ハウジング５０の収容孔５１への電線保持部材６０の挿入作業の容易化が図られている。 In addition, the tip portion 82 has a tapered surface 822 at the tip that gradually becomes thinner toward the tip side. This facilitates the operation of inserting the electric wire holding member 60 into the accommodation hole 51 of the housing 50.

埋設部分８３は、図７及び図８に示すように、後端部分８１や先端部分８２と比較して、外側及び内側の両面において薄く形成されており、上述のシール部７０の２つの貫通孔７４に埋設されている。すなわち、本体部８０は、埋設部分８３の内周に形成された内側溝８３１と、当該埋設部分７３の外周に形成された外側溝８３２と、これらの溝８３１，８３２を部分的に連結する連結孔８３３と、を有している。そして、本体部８０の内側溝８３１にシール部７０の第１の接触部分７１が設けられ、本体部８０の外側溝８３２にシール部７０の第２の接触部分７２が設けられ、本体部８０の連結孔８３３にシール部７０の連結箇所７３が設けられている。 As shown in FIGS. 7 and 8, the embedded portion 83 is formed thinner on both the outer side and the inner side than the rear end portion 81 and the front end portion 82, and the two through holes of the seal portion 70 described above. 74 is embedded. That is, the main body 80 includes an inner groove 831 formed on the inner periphery of the embedded portion 83, an outer groove 832 formed on the outer periphery of the embedded portion 73, and a connection that partially connects these grooves 831 and 832. And a hole 833. The first contact portion 71 of the seal portion 70 is provided in the inner groove 831 of the main body portion 80, and the second contact portion 72 of the seal portion 70 is provided in the outer groove 832 of the main body portion 80. A connecting portion 73 of the seal portion 70 is provided in the connecting hole 833.

シール部７０は、低いヤング率を有する弾性材から構成されている。このシール部材７０を構成する弾性材の具体例としては、シリコーンゴムやフッ素ゴム等の樹脂材料を例示することができる。これに対し、本体部８０は、シール部７０を構成する硬質材のヤング率に対して相対的に高いヤング率を有する硬質材から構成されている。本体部８０を構成する硬質材の具体例としては、例えば、ポリブチレンテレフタレート（ＰＢＴ）やポリアミド（ＰＡ）等を例示することができる。本実施形態では、例えば二色成形法を用いて、シール部７０と本体部８０とが一体的に形成されている。 The seal part 70 is made of an elastic material having a low Young's modulus. Specific examples of the elastic material constituting the seal member 70 include resin materials such as silicone rubber and fluororubber. On the other hand, the main body 80 is made of a hard material having a relatively high Young's modulus relative to the Young's modulus of the hard material constituting the seal portion 70. Specific examples of the hard material constituting the main body 80 include, for example, polybutylene terephthalate (PBT) and polyamide (PA). In the present embodiment, the seal portion 70 and the main body portion 80 are integrally formed using, for example, a two-color molding method.

以上に説明した電線保持部材６０は、図４及び図５に示すように、挿入穴７１１，８１１，８２１に電線２０が挿入された状態で、ハウジング５０の収容孔５１に挿入されている。 The electric wire holding member 60 described above is inserted into the housing hole 51 of the housing 50 in a state where the electric wires 20 are inserted into the insertion holes 711, 811, and 821 as shown in FIGS. 4 and 5.

この際、シール部７０と本体部８０が一体的に形成されることで電線保持部材６０が構成されていると共に、当該電線保持部材６０がハウジング５０の収容孔５１に回転可能に保持されている。このため、電線２０が捻れている場合に、シール部７０及び本体部８０の両方がその捻れに追従して回転することが可能となっている。 At this time, the wire holding member 60 is configured by integrally forming the seal portion 70 and the main body portion 80, and the wire holding member 60 is rotatably held in the housing hole 51 of the housing 50. . For this reason, when the electric wire 20 is twisted, both the seal part 70 and the main body part 80 can rotate following the twist.

また、電線保持部材６０のシール部７０の第１の接触部分７１が、電線２０の外周面２０ａに密着している。同様に、当該シール部７０の第２の接触部分７２も、ハウジング５０の収容孔５１の内周面５３１に密着している。この際、上述のように、第１の厚みと第２の厚みとの和が、第３の厚みと実質的に等しくなっているので、シール部７０の良好なシール性能を確保することが可能となっている。 Further, the first contact portion 71 of the seal portion 70 of the electric wire holding member 60 is in close contact with the outer peripheral surface 20 a of the electric wire 20. Similarly, the second contact portion 72 of the seal portion 70 is also in close contact with the inner peripheral surface 531 of the housing hole 51 of the housing 50. At this time, as described above, since the sum of the first thickness and the second thickness is substantially equal to the third thickness, it is possible to ensure good sealing performance of the seal portion 70. It has become.

また、電線２０のこじれが生じている場合には、電線保持部材６０の本体部８０の後端部分８１及び先端部分８２の外周面が、ハウジング５０の収容孔５１の内周面５１１に当接する。これにより、当該電線２０のこじれを抑制することが可能となっている。 Further, when the electric wire 20 is twisted, the outer peripheral surfaces of the rear end portion 81 and the front end portion 82 of the main body 80 of the electric wire holding member 60 abut against the inner peripheral surface 511 of the housing hole 51 of the housing 50. . Thereby, the electric wire 20 can be prevented from being twisted.

さらに、本実施形態では、図９に示すように、中央に位置する第１の電線保持部材６０Ａは、挿入孔７１１，８１１，８２１の断面扇形の頂点７１１ｄが下方を向いた姿勢で、ハウジング５０の第１の収容孔５１Ａに装着されている。これに対し、第１の電線保持部材６０Ａの図９中右側に位置する第２の電線保持部材６０Ｂは、挿入孔７１１，８１１，８２１の断面扇形の頂点７１１ｄが上方を向いた姿勢で、ハウジング５０の第２の収容孔５１Ｂに装着されている。同様に、第１の電線保持部材６０Ａの図９中左側に位置する第３の電線保持部材６０Ｃも、挿入孔７１１，８１１，８２１の断面扇形の頂点７１１ｄが上方を向いた姿勢で、ハウジング５０の第３の収容孔５１Ｃに装着されている。 Furthermore, in the present embodiment, as shown in FIG. 9, the first electric wire holding member 60 A located at the center is in a posture in which the cross-sectional fan-shaped apex 711 d of the insertion holes 711, 811, and 821 faces downward. The first receiving hole 51A is mounted. On the other hand, the second electric wire holding member 60B located on the right side in FIG. 9 of the first electric wire holding member 60A has a posture in which the top 711d of the sectional fan shape of the insertion holes 711, 811 and 821 faces upward. 50 second housing holes 51B. Similarly, the third electric wire holding member 60C located on the left side in FIG. 9 of the first electric wire holding member 60A also has the housing 50 in a posture in which the sectional fan-shaped apex 711d of the insertion holes 711, 811 and 821 faces upward. Is mounted in the third accommodation hole 51C.

第１〜第３の電線保持部材６０Ａ〜６０Ｃをこうした姿勢でハウジング５０の収容孔５１Ａ〜５１Ｃに装着することで、３本の電線２０に生じる捻れを小さくすることができる。本実施形態における下方が本発明における第１の方向の一例に相当し、本実施形態における上方が本発明における第２の方向の一例に相当する。 By attaching the first to third electric wire holding members 60 A to 60 C to the accommodation holes 51 A to 51 C of the housing 50 in such a posture, the twist generated in the three electric wires 20 can be reduced. The lower part in the present embodiment corresponds to an example of the first direction in the present invention, and the upper part in the present embodiment corresponds to an example of the second direction in the present invention.

なお、ハウジング５０の第１〜第３の収容孔５１Ａ〜５１Ｃに装着する際の第１〜第３の電線保持部材６０Ａ〜６０Ｃの姿勢は特に上記に限定されない。 In addition, the attitude | position of the 1st-3rd electric wire holding member 60A-60C at the time of mounting | wearing with the 1st-3rd accommodation holes 51A-51C of the housing 50 is not specifically limited above.

例えば、特に図示しないが、頂点７１１ｄが上方を向いた姿勢で第１の電線保持部材６０Ａを第１の収容孔５１Ａに装着し、頂点７１１ｄが下方を向いた姿勢で第２の電線保持部材６０Ｂを第２の収容孔５１Ｂに装着し、頂点７１１ｄが下方を向いた姿勢で第３の電線保持部材６０Ｃを第３の収容孔５１Ｃに装着してもよい。この場合には、本実施形態における上方が本発明における第１の方向の一例に相当し、本実施形態における下方が本発明における第２の方向の一例に相当する。 For example, although not particularly illustrated, the first electric wire holding member 60A is mounted in the first receiving hole 51A in a posture in which the vertex 711d faces upward, and the second electric wire holding member 60B in a posture in which the vertex 711d faces downward. May be attached to the second accommodation hole 51B, and the third wire holding member 60C may be attached to the third accommodation hole 51C with the apex 711d facing downward. In this case, the upper direction in the present embodiment corresponds to an example of the first direction in the present invention, and the lower direction in the present embodiment corresponds to an example of the second direction in the present invention.

ストッパ９０は、図９及び図１０に示すように、複数（本実施形態では３つ。図５参照）の内側筒部９１と、外側筒部９２と、底部９３と、を備えている。このストッパ９０は、図４及び図５に示すように、ハウジング５０の収容孔５１の後端側の開口５３２に固定されている。 As shown in FIGS. 9 and 10, the stopper 90 includes a plurality (three in the present embodiment, see FIG. 5) of an inner cylindrical portion 91, an outer cylindrical portion 92, and a bottom portion 93. As shown in FIGS. 4 and 5, the stopper 90 is fixed to the opening 532 on the rear end side of the housing hole 51 of the housing 50.

それぞれの内側筒部９１は、図１０に示すように、ハウジング５０の収容孔５１の第１の内径Ｒ_ｉ１に対して若干小さな第３の外径Ｒ_ｏ３を有する円筒形状を有しており（Ｒ_ｏ３＜Ｒ_ｉ１）、当該収容孔５１の第１の開口５３２に挿入されている。なお、内側筒部９１の外周面には、ハウジング５０へのストッパ９０の安定した固定を確保するために、Ｘ方向に延在する複数のリブ９１２が立設されているが、上記の第３の外径Ｒ_ｏ３には、このリブ９１２の高さは含まない。 As shown in FIG. 10, each inner cylindrical portion 91 has a cylindrical shape having a third outer diameter _Ro3 that is slightly smaller than the first inner diameter R _i1 of the housing hole 51 of the housing 50 ( R _o3 <R _i1 ), which is inserted into the first opening 532 of the accommodation hole 51. A plurality of ribs 912 extending in the X direction are erected on the outer peripheral surface of the inner cylindrical portion 91 in order to ensure stable fixation of the stopper 90 to the housing 50. The outer diameter _Ro3 does not include the height of the rib 912.

また、この内側筒部９１は、図９及び図１０に示すように、楕円形の断面形状の内孔９１１を有している。この内孔９１１は、電線２０の扇形の断面形状を包含し、且つ、本体部８０の第２の外径Ｒ_ｏ２に対して相対的に小さな断面形状を有しており、コネクタ３０の後端側に向かって開口している。本実施形態における内側筒部９１の内孔９１１が、本発明におけるストッパの内孔の一例に相当する。 Further, as shown in FIGS. 9 and 10, the inner cylindrical portion 91 has an inner hole 911 having an elliptical cross-sectional shape. The inner hole 911 includes a fan-shaped cross-sectional shape of the electric wire 20 and has a relatively small cross-sectional shape with respect to the second outer diameter _Ro2 of the main body 80, and the rear end of the connector 30. Open to the side. The inner hole 911 of the inner cylindrical portion 91 in the present embodiment corresponds to an example of the inner hole of the stopper in the present invention.

このように、ストッパ９０の内孔９１１が、電線２０の扇形の断面形状を包含する断面形状を有していることで、電線２０の捻れを許容することができる。また、ストッパ９０の内孔９１１が、本体部８０の第２の外径Ｒ_ｏ２に対して相対的に小さな断面形状を有していることで、ハウジング５０からの電線保持部材６０の抜け止めを図られている。なお、内孔９１１の断面形状は、電線２０の断面形状に対して相対的に大きく且つ本体部８０の第２の外径Ｒ_ｏ２に対して相対的に小さければ特に限定されず、例えば真円であってもよい。 As described above, the inner hole 911 of the stopper 90 has a cross-sectional shape that includes the fan-shaped cross-sectional shape of the electric wire 20, thereby allowing the electric wire 20 to be twisted. Further, since the inner hole 911 of the stopper 90 has a relatively small cross-sectional shape with respect to the second outer diameter _Ro2 of the main body portion 80, the electric wire holding member 60 can be _prevented from coming off from the housing 50. It is illustrated. The cross-sectional shape of the inner hole 911 is not particularly limited as long as it is relatively large with respect to the cross-sectional shape of the electric wire 20 and relatively small with respect to the second outer diameter _Ro2 of the main body 80. It may be.

外側筒部９２は、相互に並列に配置された３つの円筒を連結させた筒形状を有している。この外側筒部９２は、ハウジング５０の後端部分の外形に対して若干大きな内孔９２１を有しており、３つの内側筒部９１を囲繞している。この外側筒部９２の内孔９２１には、ハウジング５０の後端部分が挿入されており、外側筒部９２と内側筒部９１の間にハウジング５０が介在している（図４及び図５参照、）。 The outer cylinder part 92 has a cylindrical shape in which three cylinders arranged in parallel with each other are connected. The outer cylindrical portion 92 has an inner hole 921 that is slightly larger than the outer shape of the rear end portion of the housing 50, and surrounds the three inner cylindrical portions 91. The rear end portion of the housing 50 is inserted into the inner hole 921 of the outer cylindrical portion 92, and the housing 50 is interposed between the outer cylindrical portion 92 and the inner cylindrical portion 91 (see FIGS. 4 and 5). ,).

また、この外側筒部９２には、Ｘ方向に沿って延在する複数のスリット９２２が形成されている。スリット９２２は、ハウジング５０の突起５３４に対応するように、外側筒部９２の外周面における後端側の部分に配置されている。このスリット９２２にハウジング５０の突起５３４が係止することで、ストッパ９０がハウジング５０に固定されている（図４及び図５参照、）。 The outer cylindrical portion 92 is formed with a plurality of slits 922 extending along the X direction. The slit 922 is disposed on the rear end portion of the outer peripheral surface of the outer cylindrical portion 92 so as to correspond to the protrusion 534 of the housing 50. The stopper 90 is fixed to the housing 50 by the projection 534 of the housing 50 being engaged with the slit 922 (see FIGS. 4 and 5).

なお、本実施形態では、図９及び図１０に示すように、コネクタ付き電線１の組立を容易にするために、ストッパ９０が２つの部材に分割されているが、特にこれに限定されず、ストッパ９０を一つの部材で構成してもよい。 In this embodiment, as shown in FIG. 9 and FIG. 10, the stopper 90 is divided into two members in order to facilitate the assembly of the electric wire 1 with a connector. The stopper 90 may be composed of a single member.

底部９３は、相互に並列に配置された３つの円環を連結させた形状を有している。この底部９３は、内側筒部９１の後端と外側筒部９２の後端との間に介在しており、内側筒部９１と外側筒部９２は、当該底部９３を介して相互に連結されている。 The bottom portion 93 has a shape obtained by connecting three circular rings arranged in parallel to each other. The bottom portion 93 is interposed between the rear end of the inner cylindrical portion 91 and the rear end of the outer cylindrical portion 92, and the inner cylindrical portion 91 and the outer cylindrical portion 92 are connected to each other via the bottom portion 93. ing.

ここで、扇形の断面形状の挿入孔を有するストレインリリーフをシールドシェルに固定すると、電線の姿勢はストレインリリーフにより固定されてしまう。そして、この場合に、端子と電線が所望の姿勢からずれて接合されていると、端子とストレインリリーフとの間で電線が捻れてしまい、端子との接合部に捻れ応力が生じ、端子と電線の接続信頼性が低下してしまう場合がある。 Here, if the strain relief having a fan-shaped insertion hole having a sectional shape is fixed to the shield shell, the posture of the electric wire is fixed by the strain relief. In this case, if the terminal and the electric wire are joined with a deviation from a desired posture, the electric wire is twisted between the terminal and the strain relief, and a torsional stress is generated at the joint between the terminal and the electric wire. Connection reliability may be reduced.

また、端子と電線が所望の姿勢からずれて接合されている場合に、ストレインリリーフの角度を調整しながらシールドシェルに固定することで、そのズレ量を相殺することができる。しかしながら、この場合には、ストレインリリーフの個別の調整に時間を要するため、束電線へのコネクタの取付作業の生産性が著しく低下してしまう。 Further, when the terminal and the electric wire are joined with a deviation from a desired posture, the amount of deviation can be offset by fixing the strain relief angle while fixing it to the shield shell. However, in this case, since it takes time to individually adjust the strain relief, the productivity of attaching the connector to the bundled wire is significantly reduced.

これに対し、本実施形態では、電線保持部材６０の収容孔７１１，８１１，８２１が、電線２０の断面形状に対応した扇形の断面形状を有していると共に、当該電線保持部材６０がハウジング５０に対して回転可能に保持されている。このため、本実施形態におけるコネクタ３０は、扇形の断面形状の電線２０から構成される束電線１０に対応することが可能となっている。 On the other hand, in the present embodiment, the receiving holes 711, 811, and 821 of the electric wire holding member 60 have a fan-shaped cross-sectional shape corresponding to the cross-sectional shape of the electric wire 20, and the electric wire holding member 60 is connected to the housing 50. Is held rotatably. For this reason, the connector 30 in this embodiment can respond | correspond to the bundled electric wire 10 comprised from the electric wire 20 of fan-shaped cross-sectional shape.

特に、電線保持部材６０がハウジング５０に回転可能に保持されていることで、端子と電線の高い接続信頼性を確保すると共に、束電線１０へのコネクタ３０の取付作業の容易化を図ることができる。 In particular, since the wire holding member 60 is rotatably held by the housing 50, it is possible to ensure high connection reliability between the terminals and the wires and to facilitate the work of attaching the connector 30 to the bundled wires 10. it can.

また、ワイヤシールをストレインリリーフから独立した部材で構成し、当該ワイヤシールに扇形の挿入孔を形成した場合には、当該ワイヤシールが弾性材から構成されているために、電線２０の断面形状と挿入孔の断面形状とが一致していない状態で電線をワイヤシールに誤挿入してしまう場合がある。こうした誤挿入が生じた場合には、ハウジングと電線との間に所望のシール性能を確保することができない。 In addition, when the wire seal is formed of a member independent of the strain relief and the fan-shaped insertion hole is formed in the wire seal, the wire seal is formed of an elastic material, so There are cases where the electric wire is erroneously inserted into the wire seal in a state where the cross-sectional shape of the insertion hole does not match. When such erroneous insertion occurs, a desired sealing performance cannot be ensured between the housing and the electric wire.

これに対し、本実施形態では、ワイヤシールとストレインリリーフを一体化して電線保持部材６０が構成されていると共に、シール部７０を構成する弾性材よりも相対的に硬い硬質材で本体部８０が構成されているため、上述のような電線２０の誤挿入が生じることはない。 On the other hand, in the present embodiment, the wire seal and the strain relief are integrated to form the electric wire holding member 60, and the main body portion 80 is made of a hard material that is relatively harder than the elastic material constituting the seal portion 70. Since it is configured, the erroneous insertion of the electric wire 20 as described above does not occur.

なお、以上説明した実施形態は、本発明の理解を容易にするために記載されたものであって、本発明を限定するために記載されたものではない。したがって、上記の実施形態に開示された各要素は、本発明の技術的範囲に属する全ての設計変更や均等物をも含む趣旨である。 The embodiment described above is described for facilitating the understanding of the present invention, and is not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

上述の実施形態では、電線保持部材６０の本体部８０が３つの部分８１〜８３を有しているが、特にこれに限定されない。例えば、本体部が先端部分を有さず、後端部分と埋設部分のみで本体部を構成してもよい。 In the above-described embodiment, the main body 80 of the electric wire holding member 60 includes the three portions 81 to 83, but is not particularly limited thereto. For example, the main body portion may not include the front end portion, and the main body portion may be configured only by the rear end portion and the embedded portion.

１…コネクタ付き電線
１０…束電線
２０…電線
２０ａ…外周面
２１…中心導体
２１１…素線
２２…被覆層
３０…コネクタ
４０…端子
４１…端子接続部
４１１…嵌合部
４１２…板ばね
４１３…上面
４１４，４１５…側面
４１６…底面
４１７…係止孔
４２…電線接続部
４２１，４２２…バレル
５０…ハウジング
５１，５１Ａ〜５１Ｃ…収容孔
５２…小径部
５２１…ランス
５２２…開口
５３…大径部
５３１…内周面
５３２…開口
５３３…外周面
５３４…突起
６０，６０Ａ〜６０Ｃ…電線保持部材
７０…シール部
７１…第１の接触部分
７１１…第１の挿入孔
７１１ａ，７１１ｂ…直線
７１１ｃ…円弧
７１１ｄ…頂点
７１２…リップ
７２…第２の接触部分
７２１…リップ
７３…連結箇所
７４…貫通孔
８０…本体部
８１…後端部分
８１１…第２の挿入孔
８２…先端部分
８２１…第３の挿入孔
８２２…テーパ面
８３…埋設部分
８３１…内側溝
８３２…外側溝
８３３…連結孔
９０…ストッパ
９１…内側筒部
９１１…内孔
９１２…リブ
９２…外側筒部
９２１…内孔
９２２…スリット
９３…底部 DESCRIPTION OF SYMBOLS 1 ... Electric wire with a connector 10 ... Bundled electric wire 20 ... Electric wire 20a ... Outer peripheral surface 21 ... Center conductor 211 ... Elementary wire 22 ... Covering layer 30 ... Connector 40 ... Terminal 41 ... Terminal connection part 411 ... Fitting part
412 ... Leaf spring
413 ... Upper surface
414, 415 ... side
416 ... Bottom 417 ... Locking hole 42 ... Electric wire connection part 421, 422 ... Barrel 50 ... Housing 51, 51A-51C ... Housing hole
52 ... Small diameter part
521 ... Lance
522 ... Opening
53 ... Large diameter part
531 ... Inner peripheral surface
532 ... Opening
533 ... outer peripheral surface
534 ... Protrusion 60, 60A-60C ... Electric wire holding member 70 ... Seal portion 71 ... First contact portion
711 ... 1st insertion hole
711a, 711b ... straight line
711c ... Circular arc
711d ... vertex
712 ... Lip 72 ... Second contact portion
721 ... Lip 73 ... Connection point 74 ... Through-hole 80 ... Body part 81 ... Rear end part
811 ... Second insertion hole 82 ... Tip portion
821 ... Third insertion hole
822 ... Tapered surface 83 ... Embedded portion
831 ... Inner groove
832 ... Outer groove
833 ... Connection hole 90 ... Stopper 91 ... Inner cylinder part
911 ... Inner hole
912 ... Rib 92 ... Outer cylinder part
921 ... Inner hole
922 ... Slit 93 ... Bottom

Claims

A plurality of electric wires having a non-circular cross-sectional shape;
A plurality of connectors attached to the ends of the wires,
The connector is
A plurality of terminals respectively connected to the ends of the wires;
A connector body having a plurality of receiving holes for receiving the terminals and the electric wires, and
Each having an insertion hole into which the electric wire is inserted, and a plurality of electric wire holding members that are rotatably inserted into the accommodation holes, respectively,
The insertion hole has a non-circular cross-sectional shape corresponding to the cross-sectional shape of the electric wire,
The wire holding member is
A seal portion made of an elastic material and in close contact with the outer peripheral surface of the electric wire and the inner peripheral surface of the accommodation hole;
A main body composed of a hard material,
The main body portion is positioned on the rear end side with respect to the seal portion, and includes at least a rear end portion having a second outer diameter relatively small with respect to the first outer diameter of the seal portion. See
The main body portion extends from the rear end portion toward the front end side and includes an embedded portion embedded in the seal portion,
The seal portion is
A cylindrical first contact portion in contact with the outer peripheral surface of the electric wire and along the outer peripheral surface of the electric wire;
A cylindrical second contact portion in contact with the inner peripheral surface of the receiving hole and along the inner peripheral surface of the receiving hole;
Have
The embedded portion is interposed between the first contact portion and the second contact portion;
Furthermore, the seal portion has a connection portion where the first contact portion and the second contact portion are partially connected,
The first contact portion has a first thickness in the normal direction of the outer peripheral surface of the electric wire,
The second contact portion has a second thickness in the normal direction of the inner peripheral surface of the accommodation hole,
The sum of said 1st thickness and said 2nd thickness is an electric wire with a connector substantially equal to the thickness of the normal direction of the internal peripheral surface of the said accommodation hole in the said connection location .

A plurality of electric wires having a non-circular cross-sectional shape;
A plurality of connectors attached to the ends of the wires,
The connector is
A plurality of terminals respectively connected to the ends of the wires;
A connector body having a plurality of receiving holes for receiving the terminals and the electric wires, and
Each having an insertion hole into which the electric wire is inserted, and a plurality of electric wire holding members that are rotatably inserted into the accommodation holes, respectively,
The insertion hole has a non-circular cross-sectional shape corresponding to the cross-sectional shape of the electric wire,
The wire holding member is
A seal portion made of an elastic material and in close contact with the outer peripheral surface of the electric wire and the inner peripheral surface of the accommodation hole;
A main body composed of a hard material,
The main body portion is positioned on the rear end side with respect to the seal portion, and includes at least a rear end portion having a second outer diameter relatively small with respect to the first outer diameter of the seal portion. ,
The electric wires each have a sector cross-sectional shape,
The plurality of electric wires have a circular cross-sectional shape as a whole by bundling the plurality of electric wires,
The connector-attached electric wire includes the three electric wires and the three electric wire holding members,
The connector body has three housing holes arranged in parallel,
The three wire holding members are
A first electric wire holding member located in the center;
Second and third electric wire holding members located on both sides of the first electric wire holding member,
The first electric wire holding member is arranged so that the apex of the sectional fan shape of the insertion hole faces the first direction.
Mounted in the receiving hole,
The second electric wire holding member is attached to the receiving hole so that the apex of the cross-sectional fan shape of the insertion hole faces a second direction substantially opposite to the first direction,
The third electric wire holding member is also an electric wire with a connector attached to the accommodation hole so that the apex of the fan-shaped cross section of the insertion hole faces in the second direction.

It is an electric wire with a connector according to claim 1 or 2 ,
The connector has a stopper fixed to the opening on the rear end side of the accommodation hole,
The stopper-attached electric wire with a connector having an inner hole having a relatively large cross-sectional shape with respect to the second outer diameter of the main body portion and a relatively large cross-sectional shape of the electric wire.

It is an electric wire with a connector according to any one of claims 1 to 3 ,
The main body includes a tip portion extending from the embedded portion toward the tip side,
The connector-attached electric wire, wherein the tip portion has a third outer diameter that is relatively small with respect to the first outer diameter of the seal portion.

It is an electric wire with a connector according to claim 4 ,
The electric wire with a connector, wherein the tip portion has a tapered surface that becomes narrower toward the tip side.