JP6249766B2 - Rear holder - Google Patents

Rear holder Download PDF

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Publication number
JP6249766B2
JP6249766B2 JP2013269292A JP2013269292A JP6249766B2 JP 6249766 B2 JP6249766 B2 JP 6249766B2 JP 2013269292 A JP2013269292 A JP 2013269292A JP 2013269292 A JP2013269292 A JP 2013269292A JP 6249766 B2 JP6249766 B2 JP 6249766B2
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electric wire
holder
housing
opening
rear holder
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JP2013269292A
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JP2015125889A (en
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祐也 山田
祐也 山田
秀彦 久保嶋
秀彦 久保嶋
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Yazaki Corp
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Yazaki Corp
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Priority to JP2013269292A priority Critical patent/JP6249766B2/en
Priority to PCT/JP2014/084712 priority patent/WO2015099184A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/582—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable the cable being clamped between assembled parts of the housing
    • H01R13/5825—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable the cable being clamped between assembled parts of the housing the means comprising additional parts captured between housing parts and cable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/502—Bases; Cases composed of different pieces
    • H01R13/506—Bases; Cases composed of different pieces assembled by snap action of the parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/5837—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable specially adapted for accommodating various sized cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2101/00—One pole

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Description

本発明は、ハウジングの電線引出開口に取り付けられるリアホルダに関する。   The present invention relates to a rear holder that is attached to a wire drawing opening of a housing.

従来から、筒状のハウジングと、ハウジングに挿入されるコネクタ端子とを備えるコネクタにおいては、ハウジングの一端の電線引出開口にリアホルダを装着し、コネクタ端子に接続された電線をリアホルダの貫通穴を通して抜き出す構造が知られている（例えば、特許文献１参照）。   Conventionally, in a connector including a cylindrical housing and a connector terminal to be inserted into the housing, a rear holder is attached to an electric wire extraction opening at one end of the housing, and an electric wire connected to the connector terminal is extracted through a through hole of the rear holder. The structure is known (for example, refer to Patent Document 1).

リアホルダは、ハウジングの電線引出開口よりも小さな貫通穴に電線を挿通させることにより電線の動きを規制し、例えば、電線の損傷や、電線の動きに伴ってコネクタ端子がハウジングから抜け出すのを防ぐようにしている。   The rear holder regulates the movement of the electric wire by inserting the electric wire through a through hole smaller than the electric wire extraction opening of the housing, for example, to prevent the connector terminal from coming out of the housing due to the electric wire damage or the electric wire movement. I have to.

近年では、このようなリアホルダを用いたコネクタは、電気自動車やハイブリッド自動車等に搭載されるワイヤーハーネスの電線同士を接続する部分に多数使用されている。   In recent years, many connectors using such a rear holder are used in a portion for connecting wires of a wire harness mounted on an electric vehicle, a hybrid vehicle, or the like.

特開２０１２−１８５９６０号公報JP 2012-185960 A

ところで、この種の自動車に搭載される電線には、高圧ケーブル等が使用されており、所望の安全性を確保するため、例えば、リアホルダの貫通穴の内周面とこの貫通穴を通る高圧ケーブルの外周面との隙間からハウジングに異物が侵入するのを防ぐ対策が求められる。例えば、コネクタの安全性を判断する基準としてＩＰ規格（Ｉｎｔｅｒｎａｔｉｏｎａｌ Ｐｒｏｔｅｃｔｉｏｎ）がある。このＩＰ規格の要求を満たすためには、例えば、リアホルダの貫通穴の内周面とこの貫通穴を通る高圧ケーブルの外周面（絶縁外皮）との隙間に所定の太さ（例えば、φ１ｍｍ）の針金を差し込み、この針金が隙間を通りコネクタ端子等の活電部と接触しないことが求められる。   By the way, high-voltage cables and the like are used for the electric wires mounted on this type of automobile, and in order to ensure the desired safety, for example, the inner peripheral surface of the through hole of the rear holder and the high voltage cable passing through the through hole Measures are required to prevent foreign matter from entering the housing through a gap with the outer peripheral surface of the housing. For example, there is an IP standard (International Protection) as a standard for determining the safety of a connector. In order to satisfy the requirements of this IP standard, for example, a predetermined thickness (for example, φ1 mm) is formed in the gap between the inner peripheral surface of the through hole of the rear holder and the outer peripheral surface (insulating outer skin) of the high-voltage cable passing through the through hole. It is required that a wire is inserted and that this wire does not contact the live parts such as connector terminals through the gap.

しかしながら、この隙間の大きさは、電線の外径やリアホルダの貫通穴の穴径などのばらつきによって変化するため、例えば、リアホルダの貫通穴の穴径はこれらのばらつきを考慮して寸法を小さめに設定する必要がある。ところが、貫通穴を小さく設定すると、電線の外径寸法が大きく形成されたときに、リアホルダの貫通穴に電線を挿入する負荷が大きくなり、作業効率が低下する。   However, since the size of the gap changes depending on variations in the outer diameter of the electric wire and the diameter of the through hole of the rear holder, for example, the hole diameter of the through hole of the rear holder should be made smaller in consideration of these variations. Must be set. However, if the through hole is set to be small, the load for inserting the electric wire into the through hole of the rear holder is increased when the outer diameter of the electric wire is formed large, and the working efficiency is lowered.

また、リアホルダを軸方向に沿って分割された一対の半割り筒状体として形成し、これらの間に電線を挟持したリアホルダをハウジングの電線引出開口に挿入して固定する構造が知られている。しかし、この種のリアホルダにおいても、例えば、電線の外径寸法が大きく形成されると、ハウジングの電線引出開口にリアホルダを挿入する負荷が大きくなるため、作業性が低下することがある。   Also, a structure is known in which the rear holder is formed as a pair of halved cylindrical bodies divided along the axial direction, and the rear holder holding the electric wire between them is inserted into the electric wire outlet opening of the housing and fixed. . However, even in this type of rear holder, for example, if the outer diameter of the electric wire is large, the load for inserting the rear holder into the electric wire extraction opening of the housing becomes large, so that workability may be reduced.

本発明は、このような問題に鑑みてなされたものであり、部品の寸法ばらつきにかかわらず組付け作業を容易に行うことができ、かつ、所望の安全性を確保することを課題とする。   The present invention has been made in view of such problems, and it is an object of the present invention to be able to easily perform assembly work regardless of dimensional variations of parts and to ensure desired safety.

上記課題を解決するため、本発明に係るリアホルダは、電線が接続されたコネクタ端子が収容されるハウジングから電線を引き出す電線引出開口に取り付けられるリアホルダにおいて、リアホルダのハウジング側に位置させてリアホルダに組み付けられるインナホルダを備え、このインナホルダは、電線の外周面に被着される円形開口と、この円形開口の外周縁の一部を切除した開き部とを有し、インナホルダの組み付け時に円形開口を閉じる方向に押圧可能な押圧部を有して形成されることを特徴とする。   In order to solve the above-mentioned problems, a rear holder according to the present invention is a rear holder attached to a wire lead-out opening that draws an electric wire from a housing that accommodates a connector terminal to which an electric wire is connected. The inner holder has a circular opening to be attached to the outer peripheral surface of the electric wire, and an opening part obtained by cutting off a part of the outer peripheral edge of the circular opening, and the inner opening is closed when the inner holder is assembled. It has the press part which can be pressed in, and is formed.

これによれば、円形開口に電線を通したインナホルダをリアホルダに組み付けることにより、インナホルダを変形させ、円形開口の内周面を電線の外周面に近づけることができる。これにより、例えば、部品の寸法ばらつきが発生し、リアホルダの電線が通る穴と電線の外周面との隙間が大きく形成されたとしても、インナホルダの円形開口と電線の外周面との隙間を小さくすることができるから、結果としてＩＰ規格等の要求を満たし、所望の安全性を確保することができる。また、インナホルダを設けることにより、リアホルダの電線が通る穴を大きく設定することができるから、電線を挿通させる作業を容易に行うことができ、しかも、インナホルダをリアホルダに組付けることにより、電線をリアホルダに保持することができる。したがって、これら部品の組付け作業を容易に行うことができる。   According to this, the inner holder can be deformed by assembling the inner holder having the electric wire passed through the circular opening to the rear holder, and the inner peripheral surface of the circular opening can be brought closer to the outer peripheral surface of the electric wire. Thereby, for example, even if the dimensional variation of parts occurs and the gap between the hole through which the electric wire of the rear holder passes and the outer peripheral surface of the electric wire is formed large, the gap between the circular opening of the inner holder and the outer peripheral surface of the electric wire is reduced. Therefore, as a result, requirements such as the IP standard can be satisfied and desired safety can be ensured. In addition, since the hole through which the electric wire of the rear holder passes can be set large by providing the inner holder, the operation of inserting the electric wire can be easily performed, and the electric wire is attached to the rear holder by assembling the inner holder to the rear holder. Can be held in. Therefore, the assembly work of these parts can be easily performed.

この場合において、インナホルダは、円形開口に沿って互いに対向して延在する一対の脚部を有し、各脚部の外側に位置する側面には、押圧部が係合する係合部が形成されてなるものとする。   In this case, the inner holder has a pair of leg portions extending opposite to each other along the circular opening, and an engaging portion with which the pressing portion is engaged is formed on a side surface located outside each leg portion. Shall be made.

これによれば、インナホルダをリアホルダの押圧部同士の内側に嵌め込むことで、リアホルダを保持しながら、円形開口を変形させることができる。   According to this, the circular opening can be deformed while holding the rear holder by fitting the inner holder inside the pressing portions of the rear holder.

また、インナホルダは、開き部を介して電線を円形開口に組み付け可能に形成されてなるものとする。   The inner holder is formed so that the electric wire can be assembled to the circular opening via the opening.

これによれば、インナホルダを予め電線に被着させておく必要がなく、所望のタイミングで電線に被着させることができるから、電線の組み付け作業をより効率良く行うことができる。   According to this, it is not necessary to attach the inner holder to the electric wire in advance, and the inner holder can be applied to the electric wire at a desired timing, so that the electric wire can be assembled more efficiently.

本発明によれば、部品の寸法ばらつきにかかわらず組付け作業を容易に行うことができ、かつ、所望の安全性を確保することができる。   According to the present invention, it is possible to easily perform the assembling work regardless of the dimensional variation of the parts, and it is possible to ensure the desired safety.

本発明のリアホルダが適用されるコネクタの分解斜視図である。It is a disassembled perspective view of the connector to which the rear holder of the present invention is applied. コネクタを後方からみた斜視図である。It is the perspective view which looked at the connector from back. インナホルダを前方からみた斜視図である。It is the perspective view which looked at the inner holder from the front. リアホルダを前方からみた斜視図である。It is the perspective view which looked at the rear holder from the front. コネクタを後方からみた背面図である。It is the rear view which looked at the connector from back. インナホルダの円形開口を開いた状態を示す平面図である。It is a top view which shows the state which opened the circular opening of the inner holder.

以下、本発明のリアホルダが適用されるコネクタの一実施の形態について、図面を参照しながら説明する。図１は本発明のコネクタの分解斜視図であり、図２はコネクタを後方からみた外観斜視図である。   Hereinafter, an embodiment of a connector to which a rear holder of the present invention is applied will be described with reference to the drawings. FIG. 1 is an exploded perspective view of the connector of the present invention, and FIG. 2 is an external perspective view of the connector as viewed from the rear.

コネクタ１１は、図示しない１本の電線の端末に設けられ、相手側の電線と接続する際に用いられるものである。このコネクタ１１は、ハウジング１３と、コネクタ端子１５と、保持部材１７と、インナホルダ１９と、リアホルダ２１とを有している。インナホルダ１９は、リアホルダ２１のハウジング側に位置させてリアホルダ２１に組み付けられるようになっている。以下の説明では、図１の矢印Ｘを前後方向（紙面の手前側を前方）とし、矢印Ｙを左右方向又は幅方向、矢印Ｚを上下方向（紙面の上側を上方）として定義し、これらの定義は他の図面の説明においても適用されるものとする。   The connector 11 is provided at the end of one electric wire (not shown), and is used when connecting to a counterpart electric wire. The connector 11 includes a housing 13, a connector terminal 15, a holding member 17, an inner holder 19, and a rear holder 21. The inner holder 19 is positioned on the housing side of the rear holder 21 and is assembled to the rear holder 21. In the following description, the arrow X in FIG. 1 is defined as the front-rear direction (front side of the page is the front), the arrow Y is defined as the left-right direction or the width direction, and the arrow Z is defined as the up-down direction (upper side of the page). The definition shall be applied in the description of other drawings.

ハウジング１３は、絶縁性を有する合成樹脂により形成され、断面がほぼ矩形の角筒状をなして形成される。ハウジング１３の内側には、前後方向を長手とする直方体状の端子収容室２３が形成される。この端子収容室２３は、ハウジング１３の後方の電線引出開口２５からコネクタ端子１５が挿入される一方、前方の端子挿入口２７から図示しない相手側端子が挿入されるようになっている。また、端子収容室２３に収容されるコネクタ端子１５に接続された電線は、電線引出開口２５を介してハウジング１３から抜き出されるようになっている。端子挿入口２７は、ハウジング１３の先端面の一部を矩形状に貫いて比較的小さく形成されるのに対し、電線引出開口２５は、ハウジング１３を形成する４辺の筒壁の端部に囲まれて比較的大きい矩形状に形成される。なお、ハウジング１３は、角筒状に限られず、例えば円筒状に形成されていてもよい。   The housing 13 is formed of an insulating synthetic resin and is formed in a rectangular tube shape with a substantially rectangular cross section. A rectangular parallelepiped terminal accommodating chamber 23 having a longitudinal direction in the front-rear direction is formed inside the housing 13. In the terminal housing chamber 23, the connector terminal 15 is inserted from the electric wire outlet opening 25 at the rear of the housing 13, while a mating terminal (not shown) is inserted from the front terminal insertion port 27. Further, the electric wire connected to the connector terminal 15 accommodated in the terminal accommodating chamber 23 is extracted from the housing 13 through the electric wire extraction opening 25. The terminal insertion port 27 is formed to be relatively small by penetrating a part of the front end surface of the housing 13, while the wire lead-out opening 25 is formed at the end of the four side cylindrical walls forming the housing 13. It is surrounded and formed into a relatively large rectangular shape. The housing 13 is not limited to a rectangular tube shape, and may be formed in a cylindrical shape, for example.

ハウジング１３には、上面の筒壁を矩形状に貫通する開口２９が形成され、この開口２９には合成樹脂製の保持部材１７が装着される。保持部材１７は、ハウジング１３に収容されたコネクタ端子１５をハウジング１３に保持するための部材である。保持部材１７が装着されたハウジング１３は、図２に示すように、開口２９が閉じられた状態となる。   The housing 13 is formed with an opening 29 penetrating the upper cylindrical wall in a rectangular shape, and a synthetic resin holding member 17 is attached to the opening 29. The holding member 17 is a member for holding the connector terminal 15 accommodated in the housing 13 in the housing 13. As shown in FIG. 2, the housing 13 to which the holding member 17 is attached is in a state in which the opening 29 is closed.

コネクタ端子１５は、電気接触部３１と、この電気接触部３１と連なる円筒状の電線接続部３３とを有している。電気接触部３１は、金属製の板材を角筒状に折り曲げて形成され、相手型端子のタブ状の電気接触部が差し込まれるようになっている。電線接続部３３は、金属板材を断面円形に湾曲させて形成され、電線の絶縁外皮から露出させた導体と絶縁外被とを包み込むようにして圧着するようになっている。コネクタ端子１５の電気接触部３１の上面には、凹部３５が形成される。   The connector terminal 15 includes an electrical contact portion 31 and a cylindrical electric wire connection portion 33 that is continuous with the electrical contact portion 31. The electrical contact portion 31 is formed by bending a metal plate material into a rectangular tube shape, and a tab-shaped electrical contact portion of a mating terminal is inserted therein. The electric wire connecting portion 33 is formed by bending a metal plate material into a circular cross section, and is crimped so as to enclose the conductor exposed from the insulating sheath of the electric wire and the insulating jacket. A concave portion 35 is formed on the upper surface of the electrical contact portion 31 of the connector terminal 15.

保持部材１７は、基部３７と、一対の支持片３９と、一対の仮係止片４１と、一対の本係止片４３と、突起部４５とを有しており、左右対称に形成される。支持片３９と仮係止片４１と本係止片４３は、基部３７の下面から互いに平行に突出して形成される。保持部材１７は、図１に示すように、支持片３９を開口２９へ向けてハウジング１３に装着される。   The holding member 17 includes a base portion 37, a pair of support pieces 39, a pair of temporary locking pieces 41, a pair of main locking pieces 43, and a protruding portion 45, and is formed symmetrically. . The support piece 39, the temporary locking piece 41, and the main locking piece 43 are formed to protrude in parallel from the lower surface of the base portion 37. As shown in FIG. 1, the holding member 17 is attached to the housing 13 with the support piece 39 facing the opening 29.

支持片３９は、ハウジング１３の内壁の凸部４７に沿って収容されることにより、ハウジング１３の所定位置に案内される。これにより、仮係止片４１がハウジング１３の図示しない仮係止部に引っ掛かり、基部３７がハウジング１３に仮係止される。さらに支持片３９を奥まで挿入すると、本係止片４３がハウジング１３の図示しない本係止部に引っ掛かり、基部３７がハウジング１３に本係止される。これにより、基部３７は、開口２９に装着されるとともに、突起部４５がハウジング１３の所定位置に収容されたコネクタ端子１５の凹部３５に挿入される。突起部４５が凹部３５に挿入されると、コネクタ端子１５はハウジング１３に保持される。   The support piece 39 is guided to a predetermined position of the housing 13 by being accommodated along the convex portion 47 of the inner wall of the housing 13. Thereby, the temporary locking piece 41 is hooked on a temporary locking portion (not shown) of the housing 13, and the base portion 37 is temporarily locked on the housing 13. When the support piece 39 is further inserted to the back, the main locking piece 43 is hooked on a main locking portion (not shown) of the housing 13, and the base portion 37 is finally locked on the housing 13. As a result, the base 37 is attached to the opening 29 and the protrusion 45 is inserted into the recess 35 of the connector terminal 15 accommodated in a predetermined position of the housing 13. When the protrusion 45 is inserted into the recess 35, the connector terminal 15 is held by the housing 13.

なお、ハウジング１３の下方には、相手コネクタが嵌合するロッキングアーム４９が形成されているが、基本的に周知の構成であるため、説明を省略する。   Note that a locking arm 49 into which the mating connector is fitted is formed below the housing 13, but the description thereof is omitted because it is basically a known configuration.

次に、本実施の形態の特徴構成であるリアホルダ２１の構成を説明する。   Next, the configuration of the rear holder 21 that is a characteristic configuration of the present embodiment will be described.

本実施の形態のリアホルダ２１は、ハウジング１３側にインナホルダ１９を組み付けて使用される。図３はインナホルダ１９を前方からみた斜視図であり、図４はリアホルダ２１を前方からみた斜視図である。インナホルダ１９は、合成樹脂により形成され、図示しない電線の外周面（絶縁外皮）に被着され、リアホルダ２１に組み付けられて使用される。リアホルダ２１は、合成樹脂により形成され、ハウジング１３から引き出された電線をハウジング１３の電線引出開口２５に保持するための部材であり、インナホルダ１９の後端部に冠着されるようになっている。   The rear holder 21 of the present embodiment is used by assembling the inner holder 19 on the housing 13 side. FIG. 3 is a perspective view of the inner holder 19 as viewed from the front, and FIG. 4 is a perspective view of the rear holder 21 as viewed from the front. The inner holder 19 is formed of a synthetic resin, is attached to an outer peripheral surface (insulating outer skin) of an electric wire (not shown), and is assembled to the rear holder 21 for use. The rear holder 21 is a member made of synthetic resin and is a member for holding the electric wire drawn from the housing 13 in the electric wire drawing opening 25 of the housing 13, and is attached to the rear end portion of the inner holder 19. .

インナホルダ１９は、図３に示すように、平板状の本体部５１と、本体部５１からハウジング１３と反対側の後方に突出するフード部５３とを有して形成される。本体部５１は、前後方向に貫通する断面円形状の円形開口５５と、この円形開口５５の外周縁の一部を切除して形成される開き部５７とを有している。すなわち、本体部５１は、フード部５３と連なり円形開口５５に沿って互いに対向して延在する一対の脚部５９ａ，５９ｂを有している。これらの脚部５９は、一端部が互いに連なり、他端部が互いに離間して位置付けられ、他端部同士の間に開き部５７が形成される。各脚部５９には、肉盗みの凹みが形成されている。   As shown in FIG. 3, the inner holder 19 includes a flat plate-like main body 51 and a hood 53 that protrudes rearward from the main body 51 on the side opposite to the housing 13. The main body 51 has a circular opening 55 having a circular cross section penetrating in the front-rear direction, and an opening 57 formed by cutting a part of the outer peripheral edge of the circular opening 55. That is, the main body 51 has a pair of leg portions 59 a and 59 b that are connected to the hood portion 53 and extend opposite to each other along the circular opening 55. These leg portions 59 are positioned so that one end portions thereof are connected to each other and the other end portions thereof are separated from each other, and an opening portion 57 is formed between the other end portions. Each leg 59 is formed with a burglar dent.

円形開口５５は、上下方向において、例えば、直径の約４分の１が欠落し、下方に開き部５７が形成される。この円形開口５５は、内周にほぼ真円の穴を有して形成され、電線を周方向から包み込むようになっている。円形開口５５の内径は、例えば、電線の外径（絶縁外皮の外径）の公差の範囲内（例えば下限値）に設定される。開き部５７は、一対の脚部５９ａ，５９ｂが弾性変形することにより、開き寸法が伸縮可能になっている。これにより、インナホルダ１９は、開き部５７を拡げることにより、円形開口５５に電線が組み込まれるようになっている。脚部５９ａ，５９ｂの開き部５７と反対側の両側面には、それぞれ段付き状に切欠いた係合部６１ａ，６１ｂが形成される。   In the vertical opening 55, for example, about a quarter of the diameter is missing in the vertical direction, and an opening 57 is formed below. The circular opening 55 is formed with a substantially perfect hole on the inner periphery, and wraps the electric wire from the circumferential direction. The inner diameter of the circular opening 55 is set, for example, within a tolerance range (for example, a lower limit value) of the outer diameter of the electric wire (the outer diameter of the insulating sheath). The opening portion 57 can be expanded and contracted by elastically deforming the pair of leg portions 59a and 59b. Thus, the inner holder 19 is configured such that the electric wire is incorporated into the circular opening 55 by expanding the opening 57. Engaging portions 61a and 61b that are notched in steps are formed on both side surfaces of the leg portions 59a and 59b opposite to the opening portions 57, respectively.

フード部５３は、円形開口５５の内周面に沿って円形開口５５のほぼ上半分の周縁部から軸方向に断面円弧状に突出して形成され、電線の外周面を周方向から包み込むようになっている。   The hood portion 53 is formed so as to protrude in a circular arc shape in the axial direction from the peripheral portion of the upper half of the circular opening 55 along the inner peripheral surface of the circular opening 55, and wraps the outer peripheral surface of the electric wire from the circumferential direction. ing.

リアホルダ２１は、図４に示すように、前方に開口する箱型に形成され、矩形状の基部６３と、基部６３の各辺の縁部から前方（ハウジング１３側）に立設する壁部６５と、基部６３から後方に突出する筒部６７（図５）とを有している。左右の壁部６５には、それぞれ係止フック６９が形成され、これらの係止フック６９は、ハウジング１３の左右の筒壁の外側に形成された係止突起７１とそれぞれ係合するようになっている。   As shown in FIG. 4, the rear holder 21 is formed in a box shape that opens to the front, and has a rectangular base 63 and a wall 65 that stands on the front (housing 13 side) from the edge of each side of the base 63. And a cylindrical portion 67 (FIG. 5) that protrudes rearward from the base portion 63. Locking hooks 69 are respectively formed on the left and right wall portions 65, and these locking hooks 69 are respectively engaged with locking protrusions 71 formed on the outer sides of the left and right cylindrical walls of the housing 13. ing.

基部６３の中央には、電線が挿通される貫通穴７３が形成される。この貫通穴７３は、筒部６７の内側と連通されており、筒部６７の内周面は、貫通穴７３の内周面を軸方向に延長させて形成される。すなわち、貫通穴７３の内周面と筒部６７の内周面とは、同じ形状をなしている。以下の説明では、特に断りがない限り、貫通穴７３には、筒部６７の内周面が含まれるものとする。   A through hole 73 through which the electric wire is inserted is formed at the center of the base 63. The through hole 73 communicates with the inside of the cylindrical portion 67, and the inner peripheral surface of the cylindrical portion 67 is formed by extending the inner peripheral surface of the through hole 73 in the axial direction. That is, the inner peripheral surface of the through hole 73 and the inner peripheral surface of the cylindrical portion 67 have the same shape. In the following description, unless otherwise specified, the through hole 73 includes the inner peripheral surface of the cylindrical portion 67.

貫通穴７３は、周方向の一部である上半分が大径部７５をなし、残る下半分が小径部７７をなして形成される。小径部７７と大径部７５は、共通の軸を中心とした互いに内径の異なる半円状の断面を有して形成される。小径部７７の内径は、電線の外径寸法の公差範囲内に設定される一方、大径部７５の内径は、小径部７７よりも大きな所定の寸法に設定される。   The through hole 73 is formed such that the upper half, which is a part in the circumferential direction, forms a large diameter portion 75 and the remaining lower half forms a small diameter portion 77. The small-diameter portion 77 and the large-diameter portion 75 are formed to have semicircular cross sections having different inner diameters around a common axis. The inner diameter of the small diameter portion 77 is set within a tolerance range of the outer diameter dimension of the electric wire, while the inner diameter of the large diameter portion 75 is set to a predetermined dimension larger than that of the small diameter portion 77.

図１、４に示すように、リアホルダ２１のハウジング１３側の貫通穴７３の周縁には、小径部７７の幅方向の両側にそれぞれ前方へ突出する押圧部７９ａ，７９ｂが設けられ、これらの内側にインナホルダ１９が組付けられるようになっている。押圧部７９ａ，７９ｂは、互いに平行に延びて形成され、先端部に面取りが施されている。押圧部７９ａ，７９ｂは、インナホルダ１９の組付け時に、貫通穴７３の小径部７７の周縁に沿って延びる脚部５９ａ，５９ｂの係合部６１ａ，６１ｂと係合するようになっている。また、インナホルダ１９が組み付けられると、貫通穴７３の大径部７５には、インナホルダ１９のフード部５３が挿入されるようになっている。フード部５３が挿入された貫通穴７３は、小径部７７の内周面とフード部５３の内周面とが、ほぼ同心円上に配置される。   As shown in FIGS. 1 and 4, the periphery of the through hole 73 on the housing 13 side of the rear holder 21 is provided with pressing portions 79 a and 79 b that protrude forward on both sides in the width direction of the small diameter portion 77. An inner holder 19 is assembled to the inner part. The pressing portions 79a and 79b are formed to extend in parallel to each other, and the tip portion is chamfered. The pressing portions 79a and 79b are adapted to engage with the engaging portions 61a and 61b of the leg portions 59a and 59b extending along the periphery of the small diameter portion 77 of the through hole 73 when the inner holder 19 is assembled. When the inner holder 19 is assembled, the hood portion 53 of the inner holder 19 is inserted into the large diameter portion 75 of the through hole 73. In the through hole 73 into which the hood portion 53 is inserted, the inner peripheral surface of the small diameter portion 77 and the inner peripheral surface of the hood portion 53 are arranged substantially concentrically.

インナホルダ１９の係合部６１ａ，６１ｂ間の外法寸法Ｌ１（図３）は、リアホルダ２１の押圧部７９ａ，７９ｂ間の内法寸法Ｌ２（図４）よりも大きく設定されている。このため、リアホルダ２１は、インナホルダ１９が組み付けられたとき、押圧部７９ａ，７９ｂが、インナホルダ１９の円形開口５５を閉じる方向に押圧可能になっている。   The outer dimension L1 (FIG. 3) between the engaging portions 61a and 61b of the inner holder 19 is set larger than the inner dimension L2 (FIG. 4) between the pressing portions 79a and 79b of the rear holder 21. For this reason, when the inner holder 19 is assembled, the rear holder 21 can be pressed in the direction in which the pressing portions 79 a and 79 b close the circular opening 55 of the inner holder 19.

図５に示すように、筒部６７（貫通穴７３）を後方からみると、リアホルダ２１は、電線接続部３３のうち、電線の絶縁外皮を圧着する第１接続部７９と、露出された芯線を圧着する第２接続部８１とを臨むように形成される。第２接続部８１は、貫通穴７３の内周面の最下部よりもやや上方に配置される。   As shown in FIG. 5, when the cylindrical portion 67 (through hole 73) is viewed from the rear, the rear holder 21 includes a first connection portion 79 that crimps an insulating sheath of the electric wire in the electric wire connection portion 33, and an exposed core wire. Is formed so as to face the second connection portion 81 for crimping. The second connection portion 81 is disposed slightly above the lowermost portion of the inner peripheral surface of the through hole 73.

次に、コネクタ１１の組み付け手順の一例について、リアホルダ２１の作用を中心に説明する。はじめに、コネクタ端子１５が接続されていない電線をリアホルダ２１の貫通穴７３に挿通させる。ここで、貫通穴７３には、電線の外径よりも大きな内径の大径部７５が形成されている。このため、電線や貫通穴７３の寸法ばらつきを吸収させ、余裕をもって電線を挿通させることができる。   Next, an example of the assembly procedure of the connector 11 will be described focusing on the operation of the rear holder 21. First, an electric wire to which the connector terminal 15 is not connected is inserted through the through hole 73 of the rear holder 21. Here, a large diameter portion 75 having an inner diameter larger than the outer diameter of the electric wire is formed in the through hole 73. For this reason, the dimensional dispersion | variation of an electric wire or the through-hole 73 is absorbed, and an electric wire can be penetrated with margin.

次に、貫通穴７３に挿通された電線の一端にコネクタ端子１５を接続し、この電線が接続されたコネクタ端子１５をハウジング１３の電線引出開口２５から端子収容室２３に挿入する。ハウジング１３には、保持部材１７が仮係止されており、保持部材１７を下方へ押し付けて本係止することで、端子収容室２３に挿入されたコネクタ端子１５の凹部３５に突起部４５が挿入される。これにより、コネクタ端子１５は、ハウジング１３に保持される。   Next, the connector terminal 15 is connected to one end of the electric wire inserted through the through hole 73, and the connector terminal 15 connected to the electric wire is inserted into the terminal accommodating chamber 23 from the electric wire outlet opening 25 of the housing 13. A holding member 17 is temporarily locked to the housing 13, and the protruding portion 45 is formed in the concave portion 35 of the connector terminal 15 inserted into the terminal accommodating chamber 23 by pressing the holding member 17 downward and finally locking. Inserted. Thereby, the connector terminal 15 is held by the housing 13.

続いて、ハウジング１３の電線引出開口２５から抜き出され、リアホルダ２１の前方に位置された電線にインナホルダ１９を被着する。電線は、インナホルダ１９の脚部５９ａ，５９ｂを外側へ開いて開き部５７を拡げることにより円形開口５５に組み付けられる。ここで、円形開口５５の内径に対して電線の外径が大きい場合、インナホルダ１９は、図６に示すように、電線が組み付けられた状態で、開き部５７が外側に拡がる方向に変形する。この時点では、円形開口５５の内周面と電線の外周面との間に隙間が生じている。   Subsequently, the inner holder 19 is attached to the electric wire that is extracted from the electric wire drawing opening 25 of the housing 13 and is positioned in front of the rear holder 21. The electric wire is assembled to the circular opening 55 by opening the leg portions 59a and 59b of the inner holder 19 outward and expanding the opening portion 57. Here, when the outer diameter of the electric wire is larger than the inner diameter of the circular opening 55, the inner holder 19 is deformed in a direction in which the opening portion 57 expands outward in a state where the electric wire is assembled as shown in FIG. At this time, there is a gap between the inner peripheral surface of the circular opening 55 and the outer peripheral surface of the electric wire.

次に、このインナホルダ１９を電線に沿ってハウジング１３側へ移動させる。ここで、インナホルダ１９は、好ましくは、ハウジング１３の後端部（電線引出開口２５の縁部）の所定位置に当接させておく。このような状態で、リアホルダ２１をハウジング１３に押し付け、左右の係止フック６９をそれぞれハウジング１３の係止突起７１と係合させる。これにより、リアホルダ２１は、インナホルダ１９をハウジング側に組み付けた状態で、ハウジング１３に冠着される。   Next, the inner holder 19 is moved toward the housing 13 along the electric wire. Here, the inner holder 19 is preferably brought into contact with a predetermined position of the rear end portion of the housing 13 (the edge portion of the wire lead-out opening 25). In this state, the rear holder 21 is pressed against the housing 13, and the left and right locking hooks 69 are engaged with the locking protrusions 71 of the housing 13, respectively. Thereby, the rear holder 21 is crowned on the housing 13 in a state where the inner holder 19 is assembled to the housing side.

リアホルダ２１がハウジング１３に冠着されると、インナホルダ１９は、フード部５３がリアホルダ２１の貫通穴７３の大径部７５に収容されるとともに、脚部５９ａ，５９ｂの係合部６１ａ，６１ｂに押圧部７９ａ，７９ｂがそれぞれ嵌め込まれ、リアホルダ２１に保持される。このとき、フード部５３は、大径部７５に挿入されることで、インナホルダ１９をリアホルダ２１に案内する。このようにリアホルダ２１をハウジング１３に押し付けて、インナホルダ１９とリアホルダ２１を相対的に近づけることにより、リアホルダ２１をハウジング１３に冠着させる動作と押圧部７９ａ，７９ｂを脚部５９ａ，５９ｂに係合させる動作とを同時に行うことができる。これにより、部品の組付け作業を効率よく行うことができ、組付け作業を簡単化することができる。   When the rear holder 21 is attached to the housing 13, the inner holder 19 has the hood portion 53 accommodated in the large-diameter portion 75 of the through hole 73 of the rear holder 21 and the engaging portions 61a and 61b of the leg portions 59a and 59b. The pressing portions 79 a and 79 b are fitted and held by the rear holder 21. At this time, the hood portion 53 is inserted into the large diameter portion 75 to guide the inner holder 19 to the rear holder 21. The rear holder 21 is pressed against the housing 13 in this manner, and the inner holder 19 and the rear holder 21 are brought relatively close to each other so that the rear holder 21 is attached to the housing 13 and the pressing portions 79a and 79b are engaged with the leg portions 59a and 59b. Can be performed simultaneously. Thereby, the assembly | attachment operation | work of components can be performed efficiently and an assembly | attachment operation | work can be simplified.

また、このとき、脚部５９ａ，５９ｂは、押圧部７５ａ，７５ｂに押圧されて、円形開口５５が閉じる方向に弾性変形する。これにより、円形開口５５の内周面は、この円形開口５５に組み込まれた電線と接触し、電線の外周面を押圧する。   At this time, the leg portions 59a and 59b are pressed by the pressing portions 75a and 75b and elastically deformed in a direction in which the circular opening 55 is closed. Thereby, the inner peripheral surface of the circular opening 55 comes into contact with the electric wire incorporated in the circular opening 55 and presses the outer peripheral surface of the electric wire.

なお、円形開口５５の変形量は、例えば、押圧部７５ａ，７５ｂと脚部５９ａ，５９ｂとの間の嵌め合いを調整することにより、適宜設定することができる。これにより、円形開口の内径や電線の外径の大きさのばらつきにかかわらず、円形開口５５と電線との隙間をなくすことができる。   The deformation amount of the circular opening 55 can be appropriately set by adjusting the fit between the pressing portions 75a and 75b and the leg portions 59a and 59b, for example. Thereby, the gap between the circular opening 55 and the electric wire can be eliminated regardless of variations in the inner diameter of the circular opening and the outer diameter of the electric wire.

以上述べたように、本実施の形態では、インナホルダ１９をリアホルダ２１に組み付けることにより、電線の外周面に周方向から脚部５９ａ，５９ｂを近づけて、脚部５９ａ，５９ｂを電線に押し付けることができる。これにより、電線やインナホルダ１９に寸法のばらつきが生じたとしても、電線の外周面とインナホルダ１９の円形開口５５の内周面との隙間をなくすことができる。また、電線に曲げ方向の外力が作用したとしても、電線の外周面には、脚部５９ａ，５９ｂの押圧力が常に作用するから、電線と脚部５９ａ，５９ｂとの間に隙間が生じるのを防ぐことができる。したがって、車両等に搭載されるコネクタ１１において、ハウジング１３に異物が侵入するのを防ぐことができ、所望の安全性を確保することができる。すなわち、例えば、ＩＰ規格の検査において、針金（例えば、φ１ｍｍ）が貫通穴７３に侵入することがあっても、この貫通穴７３に侵入した針金は、インナホルダ１９の円形開口５５の周縁（脚部５９ａ，５９ｂ）と必ず当接されるから、ハウジング１３に侵入するのを防ぐことができ、ＩＰ規格の要求を満たすことができる。   As described above, in the present embodiment, by assembling the inner holder 19 to the rear holder 21, the legs 59a and 59b can be brought closer to the outer peripheral surface of the electric wire from the circumferential direction and the legs 59a and 59b can be pressed against the electric wire. it can. Thereby, even if a variation in dimensions occurs in the electric wire or the inner holder 19, a gap between the outer peripheral surface of the electric wire and the inner peripheral surface of the circular opening 55 of the inner holder 19 can be eliminated. Even if an external force in the bending direction acts on the electric wire, the pressing force of the legs 59a and 59b always acts on the outer peripheral surface of the electric wire, so that a gap is generated between the electric wire and the legs 59a and 59b. Can be prevented. Therefore, in the connector 11 mounted on a vehicle or the like, foreign matter can be prevented from entering the housing 13, and desired safety can be ensured. That is, for example, even when a wire (for example, φ1 mm) enters the through hole 73 in the inspection of the IP standard, the wire that has entered the through hole 73 has a peripheral edge (leg portion) of the circular opening 55 of the inner holder 19. 59a, 59b) are always brought into contact with each other, so that they can be prevented from entering the housing 13 and meet the requirements of the IP standard.

また、本実施の形態では、リアホルダ２１の貫通穴７３やインナホルダ１９の円形開口５５の穴径を電線の外径に対して大きめ（例えば、電線の外径の公差上限）に設定することができるから、電線をリアホルダ２１やインナホルダ１９に容易に挿入することができ、かつ、挿入後は、電線に沿って自在に移動させることができる。これにより、電線の組み付け作業を効率良く行うことができる。   Moreover, in this Embodiment, the hole diameter of the through-hole 73 of the rear holder 21 and the circular opening 55 of the inner holder 19 can be set larger than the outer diameter of an electric wire (for example, the tolerance upper limit of the outer diameter of an electric wire). Therefore, the electric wire can be easily inserted into the rear holder 21 and the inner holder 19 and can be freely moved along the electric wire after the insertion. Thereby, the assembly | attachment operation | work of an electric wire can be performed efficiently.

なお、インナホルダ１９は、下方に開き部５７を有しているため、電線の外周面を全周にわたって包囲することはできないが、図５に示すように、筒部６７の開口から臨む下方には、第１接続部７９が上方に浮いた状態で配置される。このため、ＩＰ規格の適合検査において、針金が、筒部６７より侵入したとしても、第１接続部７９と接触するのを回避することができる。   In addition, since the inner holder 19 has the opening part 57 below, it cannot surround the outer peripheral surface of an electric wire over a perimeter, but as shown in FIG. The first connection part 79 is arranged in a state where it floats upward. For this reason, in the conformity inspection of the IP standard, even if the wire enters from the cylindrical portion 67, it can be avoided that the wire contacts the first connecting portion 79.

以上、本発明の実施形態を図面により詳述してきたが、上記の実施形態は本発明の例示にしか過ぎないものであり、本発明は上記の実施形態の構成にのみ限定されるものではない。本発明の要旨を逸脱しない範囲の設計の変更などがあっても、本発明に含まれることは勿論である。   As mentioned above, although embodiment of this invention has been explained in full detail with drawing, said embodiment is only an illustration of this invention and this invention is not limited only to the structure of said embodiment. . Needless to say, even if there is a design change within a range not departing from the gist of the present invention, it is included in the present invention.

例えば、本実施の形態では、インナホルダ１９にフード部５３を設け、このフード部５３をリアホルダ２１の貫通穴７３に収容することで、インナホルダ１９をリアホルダ２１に案内し、保持する機能をもたせているが、インナホルダ１９は、フード部５３を設けない構成とすることもできる。この場合、リアホルダ２１は、例えば、インナホルダ１９の本体部５１を壁部６５の内面に沿って案内するように形成してもよいし、本体部５１を支持する形状を基部６３の表面に設けるようにしてもよい。   For example, in the present embodiment, the inner holder 19 is provided with a hood portion 53, and the hood portion 53 is accommodated in the through hole 73 of the rear holder 21, so that the inner holder 19 is guided and held by the rear holder 21. However, the inner holder 19 may have a configuration in which the hood portion 53 is not provided. In this case, for example, the rear holder 21 may be formed so as to guide the main body 51 of the inner holder 19 along the inner surface of the wall 65, and a shape that supports the main body 51 is provided on the surface of the base 63. It may be.

１１ コネクタ
１３ ハウジング
１５ コネクタ端子
１９ インナホルダ
２１ リアホルダ
２５ 電線引出開口
５１ 本体部
５３ フード部
５５ 円形開口
５７ 開き部
５９ａ，５９ｂ 脚部
６１ａ，６１ｂ 係合部
６３ 基部
６７ 筒部
７３ 貫通穴
７９ａ，７９ｂ 押圧部 DESCRIPTION OF SYMBOLS 11 Connector 13 Housing 15 Connector terminal 19 Inner holder 21 Rear holder 25 Electric wire extraction opening 51 Body part 53 Hood part 55 Circular opening 57 Opening part 59a, 59b Leg part 61a, 61b Engagement part 63 Base part 67 Cylindrical part 73 Through-hole 79a, 79b Press Part

Claims (2)

電線が接続されたコネクタ端子が収容されるハウジングから前記電線を引き出す電線引出開口に取り付けられるリアホルダにおいて、
前記リアホルダの前記ハウジング側に位置させて前記リアホルダに組み付けられるインナホルダを備え、
前記インナホルダは、前記電線の外周面に被着される円形開口と、該円形開口の外周縁の一部を切除した開き部とを有し、
前記インナホルダの組み付け時に前記円形開口を閉じる方向に押圧可能な押圧部を有して形成され、
さらに、前記インナホルダは、前記円形開口に沿って互いに対向して延在する一対の脚部を備え、前記各脚部の外側に位置する側面には、前記押圧部が係合する係合部が形成されてなることを特徴とするリアホルダ。 In the rear holder attached to the wire lead-out opening that pulls out the wire from the housing in which the connector terminal to which the wire is connected is accommodated,
An inner holder that is positioned on the housing side of the rear holder and assembled to the rear holder;
The inner holder has a circular opening that is attached to the outer peripheral surface of the electric wire, and an opening that is a part of the outer peripheral edge of the circular opening.
It is formed with a pressing part that can be pressed in the direction of closing the circular opening when the inner holder is assembled ,
Further, the inner holder includes a pair of leg portions extending to face each other along the circular opening, and an engaging portion with which the pressing portion is engaged is formed on a side surface located outside the leg portions. A rear holder characterized by being formed . 前記インナホルダは、前記開き部を弾性変形により拡げて前記電線を前記円形開口に組み付け可能に形成されてなる請求項１に記載のリアホルダ。 The rear holder according to claim 1, wherein the inner holder is formed so that the opening can be expanded by elastic deformation so that the electric wire can be assembled to the circular opening.
JP2013269292A 2013-12-26 2013-12-26 Rear holder Active JP6249766B2 (en)

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