JP6092669B2 - connector - Google Patents

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JP6092669B2
JP6092669B2 JP2013053874A JP2013053874A JP6092669B2 JP 6092669 B2 JP6092669 B2 JP 6092669B2 JP 2013053874 A JP2013053874 A JP 2013053874A JP 2013053874 A JP2013053874 A JP 2013053874A JP 6092669 B2 JP6092669 B2 JP 6092669B2
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terminal
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electric wire
connector
terminal fitting
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JP2014179296A (en
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知由 深谷
知由 深谷
萌子 深田
萌子 深田
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Yazaki Corp
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Description

本発明は、電線付き端子金具をコネクタハウジングの端子収容室に組み付けて構成したコネクタに関するものである。   The present invention relates to a connector configured by assembling a terminal fitting with electric wires in a terminal accommodating chamber of a connector housing.

一般に、電線の端末にコネクタを取り付ける場合、まず、電線の端末に端子金具を装着し、その端子金具をコネクタハウジングの端子収容室に挿入してコネクタを構成している。   In general, when a connector is attached to an end of an electric wire, first, a terminal fitting is attached to the end of the electric wire, and the terminal fitting is inserted into a terminal accommodating chamber of a connector housing to constitute a connector.

具体的には、電線が、複数本の素線を撚り合わせた撚り線からなる芯線を絶縁被覆で覆った構造である場合、まず、電線の端末の被覆を皮剥ぎして芯線の端末を露出させ、この露出した芯線の端末に対して端子金具のワイヤバレル部を加締め、残された被覆の端末にインシュレーションバレル部を加締めることで、端子金具を被覆電線の端末に接続する。次に、その電線付き端子金具を、コネクタハウジングの端子収容室に後方から前方に向けて挿入し、端子収容室の内部に設けられたランスで端子金具を抜け止め係止することで、コネクタを構成している。   Specifically, when the electric wire has a structure in which a core wire formed by twisting a plurality of strands is covered with an insulating coating, first, the end of the electric wire is exposed by peeling off the coating of the end of the electric wire. Then, the terminal barrel is connected to the end of the covered electric wire by crimping the wire barrel portion of the terminal fitting to the exposed end of the core wire and crimping the insulation barrel portion to the remaining covered end. Next, the terminal fitting with electric wire is inserted into the terminal housing chamber of the connector housing from the rear to the front, and the terminal fitting is retained and locked with a lance provided inside the terminal housing chamber. It is composed.

ところで、近年、自動車のワイヤハーネス等の分野においても、軽量化等を目的としてアルミ電線を使用するようになってきた。アルミ電線は、例えば、複数本のアルミ素線を撚り合わせた撚り線からなる芯線を絶縁被覆で覆った構造のものである。アルミ電線の端末にコネクタを取り付ける場合、互いに導通接続される電線の芯線と端子金具とが異種金属になることで、次の解決すべき課題が生じる可能性が出てくる。   By the way, in recent years, aluminum wires have been used in the field of automobile wire harnesses and the like for the purpose of weight reduction. The aluminum electric wire has, for example, a structure in which a core wire made of a stranded wire obtained by twisting a plurality of aluminum strands is covered with an insulating coating. When a connector is attached to the terminal of an aluminum electric wire, the following problems to be solved may arise because the core wire of the electric wire and the terminal fitting that are conductively connected to each other are made of different metals.

例えば、電線の芯線と端子金具とが異種の金属によって形成されている場合、両者の接触部分に水分が介在すると、両金属が水中にイオンとして溶け込んで電気化学的反応により腐食が進行する電食が発生することが知られている。端子金具は、強度上の問題等で銅合金製とするのが一般的であるため、上記のように電線にアルミ電線を使用した場合、電線の芯線と端子金具とが異種金属になることで、電食の問題が発生する懸念が出てくる。   For example, when the core wire of the electric wire and the terminal fitting are formed of different metals, if water is present at the contact portion between the two, the metal will dissolve as ions in the water and corrosion will proceed due to an electrochemical reaction. Is known to occur. Because terminal fittings are generally made of a copper alloy due to strength problems, etc., when aluminum wires are used for the wires as described above, the core wires of the wires and the terminal fittings are made of different metals. There is a concern that the problem of electric corrosion will occur.

そこで、特許文献1に記載のコネクタでは、シリコーンゴム、キレート剤等からなる樹脂封止部材(防食部材)で電線接続部を封止することで、電食を防止するようにしている。   Therefore, in the connector described in Patent Document 1, electric corrosion is prevented by sealing the electric wire connecting portion with a resin sealing member (anticorrosion member) made of silicone rubber, a chelating agent, or the like.

従って、銅電線の端末に同種の金属である銅合金製の端子金具を接続した銅電線付き端子金具を用いてコネクタを構成する場合は、銅電線の端末を接続した電線接続部を露出させた状態の端子金具を、コネクタハウジングの端子収容室に挿入してコネクタを構成しているのである。他方、アルミ電線の端末に異種の金属である銅合金製の端子金具を接続したアルミ電線付き端子金具を使用してコネクタを構成する場合は、アルミ電線の端末を接続した電線接続部を防食部材でコーティングした状態の端子金具を、コネクタハウジングの端子収容室に挿入してコネクタを構成している。   Therefore, when configuring a connector using a terminal fitting with a copper wire in which a copper alloy terminal fitting made of the same type of metal is connected to the end of the copper wire, the wire connecting portion connecting the end of the copper wire is exposed. The terminal fitting in the state is inserted into the terminal accommodating chamber of the connector housing to constitute the connector. On the other hand, when configuring a connector using a terminal fitting with an aluminum wire in which a copper alloy terminal fitting made of a dissimilar metal is connected to the end of the aluminum wire, the wire connecting portion to which the end of the aluminum wire is connected is an anticorrosive member. The terminal metal fitting coated in (1) is inserted into the terminal housing chamber of the connector housing to constitute a connector.

防食部材で電線接続部の外周を覆った場合は、当該部分の外形サイズが防食部材無しの場合に比べて大きくなる。そのため、コネクタハウジングを、アルミ電線付き端子金具と銅電線付き端子金具に対して共通の部品として用意する場合は、大きいサイズのアルミ電線付き端子金具に合わせた端子収容室を有するコネクタハウジングを用意することになる。   When the outer periphery of the electric wire connecting portion is covered with the anticorrosion member, the outer size of the portion becomes larger than the case where the anticorrosion member is not provided. Therefore, when preparing a connector housing as a common part for terminal fittings with aluminum wires and terminal fittings with copper wires, prepare a connector housing having a terminal housing chamber that matches the large size terminal fittings with aluminum wires. It will be.

特開2012−38566号公報JP 2012-38566 A

しかし、コネクタハウジングの端子収容室を防食部材有りの大きいサイズに合わせた場合、防食部材無しの小さいサイズの銅電線付き端子金具を端子収容室に挿入すると、電線接続部と端子収容室の内周壁との間に大きめの隙間があいてしまうため、電線接続部の遊び代が大きくなり、振動時にガタ付きが起きやすくなる。   However, when the terminal housing chamber of the connector housing is adjusted to the large size with the anticorrosion member, when the small size metal terminal with copper wire without the anticorrosion member is inserted into the terminal housing chamber, the wire connection portion and the inner peripheral wall of the terminal housing chamber Since there is a large gap between the two, the play allowance of the electric wire connecting portion is increased, and rattling easily occurs during vibration.

一方、防食部材有りのアルミ電線付き端子金具を端子収容室に挿入した場合は、適正に挿入されている限り、電線接続部と端子収容室の内周壁との間の隙間が小さくなるため、電線接続部の遊び代が小さくなる。しかし、端子金具を斜めに挿入したりして、防食部材と端子収容室の内周壁との干渉により防食部材が削られてしまうと、電線接続部の遊び代が大きくなって、ガタが生じやすくなる。   On the other hand, when a terminal fitting with an aluminum wire with an anticorrosion member is inserted into the terminal accommodating chamber, the gap between the wire connecting portion and the inner peripheral wall of the terminal accommodating chamber is small as long as it is properly inserted. The allowance for the connecting portion is reduced. However, if the anticorrosion member is shaved due to interference between the anticorrosion member and the inner peripheral wall of the terminal accommodating chamber by inserting the terminal fitting diagonally, the play allowance of the electric wire connecting portion becomes large and looseness is likely to occur. Become.

本発明は、上述した事情に鑑みてなされたものであり、その目的は、防食部材有り及び防食部材無しのいずれのタイプの電線付き端子金具を使用した場合にも、コネクタハウジングに収容した状態での振動時のガタつきを抑制することのできるコネクタを提供することにある。   The present invention has been made in view of the above-described circumstances, and its purpose is to be accommodated in a connector housing even when using any type of terminal fitting with electric wire with or without an anticorrosive member. It is an object of the present invention to provide a connector that can suppress rattling during vibration.

前述した目的を達成するために、本発明に係るコネクタは、下記(1)を特徴としている。
(1)前後方向に貫通した端子収容室を備えたコネクタハウジングと、
前部に相手側端子と接続するための端子接続部を有し後部に電線の端末が接続された電線接続部を有し、前記コネクタハウジングの端子収容室に後方から前方に向けて挿入され、前記端子収容室の内部に設けられた可撓性のランスによって抜け止めされることで、前記コネクタハウジングに装着される端子金具と、
を有するコネクタであって、
前記電線接続部が収容される前記端子収容室の後部の内周壁のうち前記ランスのある側の内周壁に、前記端子金具の挿入方向に沿って形成され且つ前記電線接続部に向かって突出する突条が設けられており、
前記電線接続部の外周に前記電線接続部を包むように防食部材が設けられており、前記防食部材の表面に、前記端子金具を前記コネクタハウジングの端子収容室に挿入する際に前記突条に対してスライド自在に嵌まる溝が形成されている、こと。
In order to achieve the above-described object, the connector according to the present invention is characterized by the following (1) .
(1) a connector housing having a terminal accommodating chamber penetrating in the front-rear direction;
It has a terminal connection part for connecting to the mating terminal at the front part and has a wire connection part to which the terminal of the electric wire is connected at the rear part, and is inserted into the terminal housing chamber of the connector housing from the rear to the front, A terminal fitting attached to the connector housing by being prevented from coming off by a flexible lance provided inside the terminal accommodating chamber,
A connector having
Of the inner peripheral wall of the rear portion of the terminal accommodating chamber in which the electric wire connecting portion is accommodated, the inner peripheral wall on the side having the lance is formed along the insertion direction of the terminal fitting and protrudes toward the electric wire connecting portion. There are ridges ,
An anticorrosion member is provided on the outer periphery of the electric wire connection portion so as to wrap the electric wire connection portion, and when the terminal fitting is inserted into the terminal accommodating chamber of the connector housing on the surface of the anticorrosion member, And a groove that fits slidably .

上記(1)の構成のコネクタによれば、コネクタハウジングの端子収容室の内周壁に突条が設けられていることによって、端子収容室に挿入された端子金具の電線接続部の、端子金具の挿入方向と直交する方向の遊び代を減らすことができる。従って、電線接続部が防食部材で覆われているかいないかに拘わらず、振動が加わった際の端子金具のガタ付きを軽減することができる。
更に、前記突条による電線接続部に対する規制作用により、端子金具がコネクタハウジングの端子収容室に斜めに挿入されるのを防ぐことができる。従って、電線接続部の外周が防食部材で覆われている場合に、防食部材と端子収容室の内周壁との干渉によって防食部材が削られるのを防ぐことができる。その結果、突条が電線接続部の遊びを規制することによるガタ付き防止効果に加え、削られないままの防食部材が端子収容室の内周壁と電線接続部との間に介在することよるガタ付き防止効果が得られる。
According to the connector configured as described in (1) above, since the protrusion is provided on the inner peripheral wall of the terminal housing chamber of the connector housing, the terminal fitting of the terminal fitting inserted into the terminal housing chamber can be The allowance for play in the direction orthogonal to the insertion direction can be reduced. Therefore, the backlash of the terminal fitting when vibration is applied can be reduced regardless of whether or not the wire connection portion is covered with the anticorrosion member.
Furthermore, it is possible to prevent the terminal fitting from being inserted obliquely into the terminal accommodating chamber of the connector housing by the regulating action on the wire connecting portion by the protrusion. Therefore, when the outer periphery of the wire connection portion is covered with the anticorrosion member, the anticorrosion member can be prevented from being scraped by interference between the anticorrosion member and the inner peripheral wall of the terminal accommodating chamber. As a result, in addition to the effect of preventing rattling caused by the protrusions controlling play of the electric wire connecting portion, the anticorrosion member that is not shaved is interposed between the inner peripheral wall of the terminal accommodating chamber and the electric wire connecting portion. An anti-sticking effect is obtained.

本発明によれば、電線接続部を覆うように防食部材がコーティングされたタイプの電線付き端子金具(例えば、アルミ電線付き端子金具)を使用する場合も、防食部材がコーティングされておらず電線接続部がそのまま露出したタイプの電線付き端子金具(例えば、銅電線付き端子金具)を使用する場合も、同様に、コネクタハウジングに収容した状態での振動時の端子金具のガタつきを抑制することができる。   According to the present invention, even when using a terminal fitting with an electric wire of a type coated with an anticorrosion member so as to cover the electric wire connecting portion (for example, a terminal fitting with an aluminum electric wire), the anticorrosion member is not coated and the electric wire connection is made. Similarly, when using terminal brackets with wires that are exposed as they are (for example, terminal brackets with copper wires), it is possible to suppress rattling of the terminal brackets during vibration in the state of being housed in the connector housing. it can.

以上、本発明について簡潔に説明した。更に、以下に説明される発明を実施するための形態(以下、「実施形態」という。)を添付の図面を参照して通読することにより、本発明の詳細は更に明確化されるであろう。   The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

図1(a)及び図1(b)は、本発明の実施形態で用いるコネクタハウジングの構成図で、図1(a)は外観斜視図、図1(b)は端子収容室の中心位置で縦に切った縦断面図である。1A and 1B are configuration diagrams of a connector housing used in the embodiment of the present invention, FIG. 1A is an external perspective view, and FIG. 1B is a center position of a terminal accommodating chamber. It is the longitudinal cross-sectional view cut vertically. 図2(a)及び図2(b)は、本発明の実施形態で用いるアルミ電線付き端子金具の構成図で、図2(a)は外観斜視図、図2(b)は縦断面図である。2A and 2B are configuration diagrams of a terminal fitting with an aluminum wire used in the embodiment of the present invention, FIG. 2A is an external perspective view, and FIG. 2B is a longitudinal sectional view. is there. 図3(a)及び図3(b)は、本発明の実施形態で用いる銅電線付き端子金具の構成図で、図3(a)は外観斜視図、図3(b)は縦断面図である。3 (a) and 3 (b) are configuration diagrams of a terminal fitting with a copper wire used in the embodiment of the present invention, FIG. 3 (a) is an external perspective view, and FIG. 3 (b) is a longitudinal sectional view. is there. 図4(a)から図4(c)は、前記コネクタハウジングに防食部材有りのアルミ電線付き端子金具を組み付けて構成した実施形態のコネクタの構成図で、図4(a)は外観斜視図、図4(b)は縦断面図、図4(c)はインシュレーションバレル部の位置で切った横断面図である。4 (a) to 4 (c) are configuration diagrams of the connector of the embodiment configured by assembling a terminal fitting with an aluminum electric wire with a corrosion preventing member on the connector housing, and FIG. 4 (a) is an external perspective view, 4 (b) is a longitudinal sectional view, and FIG. 4 (c) is a transverse sectional view cut at the position of the insulation barrel portion. 図5(a)から図5(c)は、前記コネクタハウジングに防食部材無しの銅電線付き端子金具を組み付けて構成した実施形態のコネクタの構成図で、図5(a)は外観斜視図、図5(b)は縦断面図、図5(c)はインシュレーションバレル部の位置で切った横断面図である。5 (a) to FIG. 5 (c) are configuration diagrams of the connector of the embodiment in which the connector housing is configured by assembling a terminal fitting with a copper wire without a corrosion protection member, and FIG. 5 (a) is an external perspective view. FIG. 5B is a longitudinal sectional view, and FIG. 5C is a transverse sectional view cut at the position of the insulation barrel portion.

以下、本発明の実施形態を図面を参照して説明する。
図1(a)及び図1(b)は実施形態で用いるコネクタハウジングの構成図、図2(a)及び図2(b)は実施形態で用いるアルミ電線付き端子金具の構成図、図3(a)及び図3(b)は実施形態で用いる銅電線付き端子金具の構成図である。また、図4(a)から図4(c)は前記コネクタハウジングに防食部材有りのアルミ電線付き端子金具を組み付けて構成した実施形態のコネクタの構成図、図5(a)から図5(c)は前記コネクタハウジングに防食部材無しの銅電線付き端子金具を組み付けて構成した実施形態のコネクタの構成図である。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 (a) and 1 (b) are configuration diagrams of a connector housing used in the embodiment, FIGS. 2 (a) and 2 (b) are configuration diagrams of a terminal fitting with an aluminum wire used in the embodiment, and FIG. a) and FIG.3 (b) are the block diagrams of the terminal metal fitting with a copper wire used by embodiment. 4 (a) to 4 (c) are configuration diagrams of the connector of the embodiment configured by assembling a terminal fitting with an aluminum wire with a corrosion preventing member on the connector housing, and FIGS. 5 (a) to 5 (c). ) Is a configuration diagram of a connector of an embodiment configured by assembling a terminal fitting with a copper wire without a corrosion preventing member to the connector housing.

実施形態のコネクタは、図1に示すように、前後方向に貫通した端子収容室11を備えるコネクタハウジング10と、図2及び図3に示すように、前部に相手側端子と接続するための端子接続部51を有し、後部に電線W1、W2の端末が接続された電線接続部52を有し、コネクタハウジング10の各端子収容室11に後方から前方に向けて挿入され固定される端子金具50と、から構成されている。   As shown in FIG. 1, the connector of the embodiment includes a connector housing 10 including a terminal housing chamber 11 penetrating in the front-rear direction, and a connector for connecting a mating terminal at the front as shown in FIGS. 2 and 3. A terminal having a terminal connecting portion 51, having a wire connecting portion 52 to which the ends of the wires W1 and W2 are connected at the rear, and being inserted and fixed to each terminal accommodating chamber 11 of the connector housing 10 from the rear to the front. The metal fitting 50 is comprised.

図2及び図3に示す端子金具50は、銅合金製の同じ構造のものである。図2及び図3に示す端子金具50は、図2の端子金具50はアルミ電線W1の端末に接続され、図3の端子金具50は銅電線W2の端末に接続される点が異なる。ここでは、アルミ電線W1の端末に接続された端子金具50をアルミ電線付き端子金具TAとし、銅電線W2の端末に接続された端子金具50を銅電線付き端子金具TBとして区別する。   The terminal fitting 50 shown in FIGS. 2 and 3 is of the same structure made of copper alloy. The terminal metal fitting 50 shown in FIGS. 2 and 3 is different in that the terminal metal fitting 50 in FIG. 2 is connected to the terminal of the aluminum electric wire W1, and the terminal metal fitting 50 in FIG. 3 is connected to the terminal of the copper electric wire W2. Here, the terminal metal fitting 50 connected to the terminal of the aluminum electric wire W1 is identified as a terminal metal fitting TA with an aluminum electric wire, and the terminal metal fitting 50 connected to the terminal of the copper electric wire W2 is distinguished as a terminal metal fitting TB with a copper electric wire.

アルミ電線付き端子金具TAと銅電線付き端子金具TBの違いは、前者が、電線接続部52に該電線接続部52を覆うように防食部材60(例えば、シール用の樹脂)がコーティングされているのに対し、後者が、防食部材60がコーティングされていない点である。   The difference between the terminal fitting TA with an aluminum wire and the terminal fitting TB with a copper wire is that the former is coated with an anticorrosion member 60 (for example, a sealing resin) so as to cover the wire connecting portion 52 on the wire connecting portion 52. On the other hand, the latter is that the anticorrosion member 60 is not coated.

アルミ電線W1は、複数のアルミニウムまたはアルミニウム合金製のアルミ素線を撚り合わせた撚り線からなる芯線Wa1を絶縁被覆Wbで覆った構造のものである。銅電線W2は、複数の銅または銅合金製の銅素線を撚り合わせた撚り線からなる芯線Wa2を絶縁被覆Wbで覆った構造のものである。   The aluminum electric wire W1 has a structure in which a core wire Wa1 made of a stranded wire obtained by twisting a plurality of aluminum wires made of aluminum or aluminum alloy is covered with an insulating coating Wb. The copper electric wire W2 has a structure in which a core wire Wa2 made of a stranded wire obtained by twisting a plurality of copper strands made of copper or copper alloy is covered with an insulating coating Wb.

端子金具50の前部に設けられている端子接続部51は、図2(a)、図2(b)及び図3(a)、図3(b)に示すように、前後方向に開口する角筒状をなしており、その前端開口57を通して、雄端子(図示略)が内部に嵌合可能とされている。端子接続部51の後端には、図1(a)及び図1(b)に示すコネクタハウジング10の端子収容室11の内部に設けられたランス14によって係止されるランス係止部58が設けられている。   The terminal connection part 51 provided in the front part of the terminal metal fitting 50 opens in the front-rear direction, as shown in FIGS. 2 (a), 2 (b), 3 (a), and 3 (b). It has a rectangular tube shape, and a male terminal (not shown) can be fitted inside through a front end opening 57 thereof. At the rear end of the terminal connecting portion 51, there is a lance locking portion 58 that is locked by the lance 14 provided in the terminal accommodating chamber 11 of the connector housing 10 shown in FIGS. 1 (a) and 1 (b). Is provided.

端子金具50の後部に設けられている電線接続部52は、アルミ電線W1または銅電線W2の端末にて絶縁被覆Wbが皮剥ぎされることで露出された芯線Wa1、Wa2に圧着されるワイヤバレル部53と、皮剥ぎされることで残された絶縁被覆Wbの端末に加締められるインシュレーションバレル部54とからなる。   The wire connection portion 52 provided at the rear portion of the terminal fitting 50 is a wire barrel that is crimped to the core wires Wa1 and Wa2 exposed by peeling off the insulation coating Wb at the end of the aluminum wire W1 or the copper wire W2. It consists of the part 53 and the insulation barrel part 54 crimped by the terminal of the insulation coating Wb left by peeling off.

ワイヤバレル部53は、オープンバレル形式の一対の圧着片53a、53aを有しており、両圧着片53a、53aを芯線Wa1、Wa2の左右両側から包み込むように圧着することで、芯線Wa1、Wa2に固着されている。   The wire barrel portion 53 has a pair of open barrel-type crimping pieces 53a and 53a. The crimping pieces 53a and 53a are crimped so as to be wrapped from both the left and right sides of the core wires Wa1 and Wa2, thereby the core wires Wa1 and Wa2. It is fixed to.

インシュレーションバレル部54は、ワイヤバレル部53よりも一回り大きめに形成され、特に上下寸法がワイヤバレル部53より大きめに形成されている。このインシュレーションバレル部54は、オープンバレル形式の一対の加締片54a、54aを有しており、絶縁被覆Wbの残された部分の端末を左右両側から包み込むように加締めることで、電線W1、W2に固着されている。   The insulation barrel portion 54 is formed to be slightly larger than the wire barrel portion 53, and in particular, the vertical dimension is formed to be larger than the wire barrel portion 53. This insulation barrel part 54 has a pair of caulking pieces 54a, 54a of an open barrel type, and the electric wire W1 is caulked by wrapping the terminal of the remaining part of the insulating coating Wb from both the left and right sides. , Fixed to W2.

ここで、端子金具50は銅合金製とされているため、図2に示すように、アルミ電線W1の芯線Wa1と端子金具50のワイヤバレル部53との接続は、イオン化傾向の異なる異種金属同士の接続となる。そのため、アルミ電線W1の端末に接続された電線接続部52の外周には、電線接続部52を覆うように防食部材60がコーティングされている。具体的には、ワイヤバレル部53とインシュレーションバレル部54とが共に、防食部材60によって外部に露出しないように覆われている。これにより、電線接続部52の内部に水分が侵入することがなく、異種金属同士の接続であっても電食を防ぐことができるようになる。   Here, since the terminal fitting 50 is made of a copper alloy, as shown in FIG. 2, the connection between the core wire Wa1 of the aluminum electric wire W1 and the wire barrel portion 53 of the terminal fitting 50 is made of different metals having different ionization tendencies. Connection. Therefore, the outer periphery of the wire connection part 52 connected to the terminal of the aluminum wire W1 is coated with the anticorrosion member 60 so as to cover the wire connection part 52. Specifically, both the wire barrel portion 53 and the insulation barrel portion 54 are covered with the anticorrosion member 60 so as not to be exposed to the outside. Thereby, moisture does not enter the inside of the electric wire connection part 52, and even if it is the connection of dissimilar metals, electrolytic corrosion can be prevented.

一方、図3に示すように、銅電線W2の芯線Wa2と端子金具50のワイヤバレル部53との接続は、同種金属同士の接続となる。そのため、異種金属同士の接続部のように電食のおそれがないことから、電線接続部52は防食部材60無しの状態で露出している。   On the other hand, as shown in FIG. 3, the connection between the core wire Wa <b> 2 of the copper wire W <b> 2 and the wire barrel portion 53 of the terminal fitting 50 is a connection between the same type of metals. Therefore, since there is no fear of electrolytic corrosion unlike the connection part between different metals, the wire connection part 52 is exposed without the anticorrosion member 60.

実施形態のコネクタでは、前述のように構成されたアルミ電線付き端子金具TAと銅電線付き端子金具TBの2タイプに対して、図1に示すような共通のコネクタハウジング10が用意されている。このコネクタハウジング10は樹脂成形品よりなるもので、前後方向に貫通する2つの端子収容室11を有している。   In the connector of the embodiment, a common connector housing 10 as shown in FIG. 1 is prepared for the two types of terminal fitting TA with aluminum wire and terminal fitting TB with copper wire configured as described above. The connector housing 10 is made of a resin molded product and has two terminal accommodating chambers 11 penetrating in the front-rear direction.

2つの端子収容室11は横に並んでおり、共通の上壁12と下壁13とを有している。上壁12の上面(外面)には、相手側コネクタと嵌合した際にコネクタハウジング同士をロックする、係止凸部18aを有した片持形状のロックアーム18が設けられている。ロックアーム18の自由端に設けられた操作部18bの周囲には、むやみに操作部18bが操作されないように保護枠19が設けられている。   The two terminal accommodating chambers 11 are arranged side by side and have a common upper wall 12 and lower wall 13. On the upper surface (outer surface) of the upper wall 12, a cantilever-shaped lock arm 18 having a locking projection 18 a that locks the connector housings when fitted to the mating connector is provided. A protective frame 19 is provided around the operation portion 18b provided at the free end of the lock arm 18 so that the operation portion 18b is not operated unnecessarily.

また、各端子収容室11の下壁13の内面には、可撓性のランス14が一体に形成されている。このランス14は、後端の固定端14aが端子収容室11の下壁13に対して結合され、前端の自由端14bが前方斜め上方に延びる片持形状をなしており、固定端14aを支点にして、自由端14b側が上下方向に撓み自在となっている。そして、ランス14の自由端14bに、端子金具50のランス係止部58に係合することで、端子金具50を後方へ抜け止めする係止段部14cが設けられている。   A flexible lance 14 is integrally formed on the inner surface of the lower wall 13 of each terminal accommodating chamber 11. The lance 14 has a fixed end 14a at the rear end coupled to the lower wall 13 of the terminal accommodating chamber 11, a free end 14b at the front end has a cantilever shape extending obliquely upward, and the fixed end 14a serves as a fulcrum. Thus, the free end 14b side can be bent in the vertical direction. A locking step 14c is provided at the free end 14b of the lance 14 to engage the lance locking portion 58 of the terminal fitting 50 to prevent the terminal fitting 50 from coming out backward.

各端子収容室11の後部は、サイズの大きいアルミ電線付き端子金具TAの外形寸法に応じた大きさのバレル収容部11aとして形成されており、バレル収容部11aの後端11bはコネクタハウジング10の後端面に開口している。バレル収容部11aの内周壁は、ランス14の成形上の要請などから、ランス14のある側が端子金具50に対して余裕を持った大きさに形成されている。従って、端子収容室11に端子金具50が挿入されて固定された場合に、ランス14のある側に端子金具50の動くスペースができる。   The rear part of each terminal accommodating chamber 11 is formed as a barrel accommodating part 11a having a size corresponding to the outer dimensions of the large terminal fitting TA with an aluminum wire, and the rear end 11b of the barrel accommodating part 11a is formed on the connector housing 10. Opened to the rear end face. The inner peripheral wall of the barrel housing portion 11 a is formed in a size such that the side on which the lance 14 is provided has a margin with respect to the terminal fitting 50 due to a request for forming the lance 14. Therefore, when the terminal fitting 50 is inserted and fixed in the terminal accommodating chamber 11, a space for moving the terminal fitting 50 is formed on the side where the lance 14 is present.

このコネクタハウジング10では、端子金具50の電線接続部52が収容される端子収容室11のバレル収容部11aの内周壁のうち、ランス14のある側の内周壁に、端子収容室11に収容された際の電線接続部52に向かって突出する突条15が設けられている。この突条15は、端子金具50の挿入方向に沿って延びている。   In the connector housing 10, the inner wall of the barrel housing portion 11 a of the terminal housing chamber 11 in which the wire connection portion 52 of the terminal fitting 50 is housed is housed in the terminal housing chamber 11 on the inner circumferential wall on the side where the lance 14 is present. The protrusion 15 which protrudes toward the electric wire connection part 52 at the time of contact is provided. The protrusion 15 extends along the insertion direction of the terminal fitting 50.

また、図2に示すように、アルミ電線付き端子金具TAの電線接続部52の外周を包むように設けられた防食部材60の表面には、端子金具50をコネクタハウジング10の端子収容室11に挿入する際に、コネクタハウジング10の突条15に対してスライド自在に嵌まる溝61が形成されている。   In addition, as shown in FIG. 2, the terminal fitting 50 is inserted into the terminal accommodating chamber 11 of the connector housing 10 on the surface of the anticorrosion member 60 provided so as to wrap the outer periphery of the wire connecting portion 52 of the terminal fitting TA with aluminum wires. In doing so, a groove 61 is formed that fits slidably with respect to the protrusion 15 of the connector housing 10.

実施形態のコネクタを構成する場合は、図4または図5に示すように、コネクタハウジング10の各端子収容室11に、アルミ電線W1の端末に取り付けられた端子金具50(アルミ電線付き端子金具TA)、または、銅電線W2の端末に取り付けられた端子金具50(銅電線付き端子金具TB)を挿入する。この際、端子金具50は、コネクタハウジング10に対して、図2(a)、図2(b)及び図3(a)、図3(b)に示す姿勢を上下逆にして挿入される。   When configuring the connector of the embodiment, as shown in FIG. 4 or FIG. 5, the terminal fittings 50 (terminal fittings TA with an aluminum wire) attached to the terminals of the aluminum wires W <b> 1 in the terminal accommodating chambers 11 of the connector housing 10. ) Or the terminal fitting 50 (terminal fitting TB with copper wire) attached to the end of the copper wire W2. At this time, the terminal fitting 50 is inserted into the connector housing 10 with the postures shown in FIGS. 2A, 2 </ b> B, 3 </ b> A, and 3 </ b> B upside down.

そうすると、ランス14を下方に押し下げながら端子金具50の端子接続部51が端子収容室11の奥に挿入され、端子接続部51がランス14の先端を通過したところで、ランス14が撓みから復帰して、ランス14の先端の係止段部14cが端子金具50のランス係止部58に係合し、端子金具50が抜け止めされた状態で固定される。   Then, the terminal connection part 51 of the terminal metal fitting 50 is inserted into the back of the terminal accommodating chamber 11 while pushing down the lance 14 downward, and when the terminal connection part 51 passes through the tip of the lance 14, the lance 14 returns from bending. The locking step 14c at the tip of the lance 14 engages with the lance locking portion 58 of the terminal fitting 50, and the terminal fitting 50 is fixed in a state of being prevented from coming off.

このとき、端子金具50の電線接続部52のワイヤバレル部53やインシュレーションバレル部54は、端子収容室11の後部のバレル収容部11aに収容される。アルミ電線付き端子金具TAが端子収容室11に挿入された場合は、端子金具50の底面は端子収容室11の上壁12に当接することで支持される。他方、端子収容室11の下壁13には突条15が設けられているので、図4(b)の矢印Yで示す方向の電線接続部52の倒れが規制される。従って、端子挿入方向と直交する方向における電線接続部52の遊び代が減り、それによって、振動時に端子金具50がガタつくのが抑制される。   At this time, the wire barrel part 53 and the insulation barrel part 54 of the electric wire connection part 52 of the terminal fitting 50 are accommodated in the barrel accommodating part 11 a at the rear part of the terminal accommodating chamber 11. When the terminal fitting TA with an aluminum wire is inserted into the terminal accommodating chamber 11, the bottom surface of the terminal fitting 50 is supported by contacting the upper wall 12 of the terminal accommodating chamber 11. On the other hand, since the protrusion 15 is provided on the lower wall 13 of the terminal accommodating chamber 11, the falling of the wire connecting portion 52 in the direction indicated by the arrow Y in FIG. Therefore, the play allowance of the electric wire connection part 52 in the direction orthogonal to the terminal insertion direction is reduced, thereby suppressing the play of the terminal fitting 50 during vibration.

一方、銅電線付き端子金具TBが端子収容室11に挿入された場合は、端子金具50の底面は端子収容室11の上壁12に当接はしていないが、端子収容室11の下壁13には突条15が設けられているので、突条15の高さ分、図5(b)の矢印Yで示す方向の電線接続部52の倒れが規制される。従って、端子挿入方向と直交する方向における電線接続部52の遊び代が減り、それによって、振動時に端子金具50がガタつくのが抑制される。   On the other hand, when the terminal fitting TB with the copper wire is inserted into the terminal accommodating chamber 11, the bottom surface of the terminal fitting 50 is not in contact with the upper wall 12 of the terminal accommodating chamber 11, but the lower wall of the terminal accommodating chamber 11. 13 is provided with the ridge 15, the fall of the wire connecting portion 52 in the direction indicated by the arrow Y in FIG. 5B is regulated by the height of the ridge 15. Therefore, the play allowance of the electric wire connection part 52 in the direction orthogonal to the terminal insertion direction is reduced, thereby suppressing the play of the terminal fitting 50 during vibration.

このように、実施形態のコネクタによれば、電線接続部52が防食部材60で覆われているかいないかに拘わらず、つまり、アルミ電線付き端子金具TAを用いてコネクタが構成されているか、銅電線付き端子金具TBを用いてコネクタが構成されているかに拘わらず、振動時に端子金具50がガタつくのが抑制される。   Thus, according to the connector of the embodiment, regardless of whether or not the wire connection portion 52 is covered with the anticorrosion member 60, that is, whether the connector is configured using the terminal fitting TA with an aluminum wire, or a copper wire Regardless of whether the connector is configured using the attached terminal fitting TB, it is possible to prevent the terminal fitting 50 from rattling during vibration.

また、アルミ電線付き端子金具TAを端子収容室11に挿入する場合には、突条15による電線接続部52に対する規制作用により、端子金具50がコネクタハウジング10の端子収容室11に斜めに挿入されるのを防ぐことができる。従って、電線接続部52の外周が防食部材60で覆われたアルミ電線付き端子金具TAを用いてコネクタが構成されている場合、防食部材60と端子収容室11の内周壁との干渉によって防食部材60が削られるのを防ぐことができる。その結果、突条15が電線接続部52の遊びを規制することによるガタ付き防止効果に加え、削られないままの防食部材60が端子収容室11の内周壁と電線接続部52との間に介在することよるガタ付き防止効果が得られる。   Further, when the terminal fitting TA with the aluminum wire is inserted into the terminal accommodating chamber 11, the terminal fitting 50 is inserted obliquely into the terminal accommodating chamber 11 of the connector housing 10 due to the restriction action on the electric wire connecting portion 52 by the protrusion 15. Can be prevented. Therefore, when the connector is formed using the terminal fitting TA with an aluminum wire in which the outer periphery of the wire connecting portion 52 is covered with the anticorrosion member 60, the anticorrosion member is caused by the interference between the anticorrosion member 60 and the inner peripheral wall of the terminal accommodating chamber 11. 60 can be prevented from being cut. As a result, in addition to the backlash prevention effect by the protrusion 15 restricting the play of the electric wire connection portion 52, the anticorrosion member 60 that is not shaved is provided between the inner peripheral wall of the terminal accommodating chamber 11 and the electric wire connection portion 52. The effect of preventing rattling due to the interposition is obtained.

尚、本発明は、上述した実施形態に限定されるものではなく、適宜、変形、改良、等が可能である。その他、上述した実施形態における各構成要素の材質、形状、寸法、数、配置箇所、等は本発明を達成できるものであれば任意であり、限定されない。   In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

10 コネクタハウジング
11 端子収容室
14 ランス
15 突条
50 端子金具
51 端子接続部
52 電線接続部
60 防食部材
61 溝
W1 アルミ電線
W2 銅電線
DESCRIPTION OF SYMBOLS 10 Connector housing 11 Terminal accommodation chamber 14 Lance 15 Projection 50 Terminal metal fitting 51 Terminal connection part 52 Electric wire connection part 60 Corrosion prevention member 61 Groove W1 Aluminum electric wire W2 Copper electric wire

Claims (1)

前後方向に貫通した端子収容室を備えたコネクタハウジングと、
前部に相手側端子と接続するための端子接続部を有し後部に電線の端末が接続された電線接続部を有し、前記コネクタハウジングの端子収容室に後方から前方に向けて挿入され、前記端子収容室の内部に設けられた可撓性のランスによって抜け止めされることで、前記コネクタハウジングに装着される端子金具と、
を有するコネクタであって、
前記電線接続部が収容される前記端子収容室の後部の内周壁のうち前記ランスのある側の内周壁に、前記端子金具の挿入方向に沿って形成され且つ前記電線接続部に向かって突出する突条が設けられており、
前記電線接続部の外周に前記電線接続部を包むように防食部材が設けられており、前記防食部材の表面に、前記端子金具を前記コネクタハウジングの端子収容室に挿入する際に前記突条に対してスライド自在に嵌まる溝が形成されている、
コネクタ。
A connector housing having a terminal accommodating chamber penetrating in the front-rear direction;
It has a terminal connection part for connecting to the mating terminal at the front part and has a wire connection part to which the terminal of the electric wire is connected at the rear part, and is inserted into the terminal housing chamber of the connector housing from the rear to the front, A terminal fitting attached to the connector housing by being prevented from coming off by a flexible lance provided inside the terminal accommodating chamber,
A connector having
Of the inner peripheral wall of the rear portion of the terminal accommodating chamber in which the electric wire connecting portion is accommodated, the inner peripheral wall on the side having the lance is formed along the insertion direction of the terminal fitting and protrudes toward the electric wire connecting portion. There are ridges ,
An anticorrosion member is provided on the outer periphery of the electric wire connection portion so as to wrap the electric wire connection portion, and when the terminal fitting is inserted into the terminal accommodating chamber of the connector housing on the surface of the anticorrosion member, And a groove that fits slidably is formed,
connector.
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CN106785546A (en) * 2015-11-23 2017-05-31 泰科电子公司 Electric connector with the electrical contact including microporous barrier

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JPS57117084U (en) * 1981-12-30 1982-07-20
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CN106785546A (en) * 2015-11-23 2017-05-31 泰科电子公司 Electric connector with the electrical contact including microporous barrier
CN106785546B (en) * 2015-11-23 2020-03-31 泰科电子公司 Electrical connector having electrical contacts including a microporous barrier

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