JP2008066157A

JP2008066157A - Branch connector

Info

Publication number: JP2008066157A
Application number: JP2006243593A
Authority: JP
Inventors: Yasuo Omori; 康雄大森; Hiroki Hirai; 宏樹平井; Tetsuji Tanaka; 徹児田中
Original assignee: Sumitomo Wiring Systems Ltd; AutoNetworks Technologies Ltd; Sumitomo Electric Industries Ltd
Current assignee: Sumitomo Wiring Systems Ltd; AutoNetworks Technologies Ltd; Sumitomo Electric Industries Ltd
Priority date: 2006-09-08
Filing date: 2006-09-08
Publication date: 2008-03-21

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate the need for a mounting process and a printed circuit board to mount a resistor, by providing a resistance material, to be disposed in a branch connector, in a circuit without mounting it on the circuit board. <P>SOLUTION: In this branch connector provided at a location where a plurality of branch lines are branched from mains, a bus bar for joints in which first pressure contact terminal parts are brought into pressure contact with the mains and a plurality of second pressure contact terminal parts are provided with a space left between them, terminal materials equipped with pressure contact terminal parts disposed face to face with the second pressure contact terminal parts of the bus bar at their one end while having connection parts connected to the branch lines at the other ends, and a resistance material brought into pressure contact and connected with each second pressure contact part of the bus bar and the pressure contact terminal part of each terminal material by interposing it between them, are housed in a connector housing. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、分岐コネクタに関し、詳しくは、自動車内に配索されるＬＡＮ中に介設され、通信回路の分岐接続部で発生する信号の反射を減衰する機能をコネクタ内に設けたものである。 The present invention relates to a branch connector, and more specifically, is provided in a LAN provided in a car and provided with a function for attenuating reflection of a signal generated at a branch connection portion of a communication circuit. .

従来、自動車に配索される電線同士の接続にはコネクタが多く用いられており、特開２００６−４８５２号公報（特許文献１）では、電子部品を内蔵したコネクタが提供されている。
特許文献１で提供されたコネクタ１は、図１０に示すように、アッパーケース２とロアケース３からなるハウジング４内に複数の電子部品５を実装したプリント基板６を収容して、該プリント基板６に接続した端子７を外部電線（図示せず）の端末の端子と接続している。 Conventionally, a connector is often used for connection between electric wires arranged in an automobile, and Japanese Patent Application Laid-Open No. 2006-4852 (Patent Document 1) provides a connector incorporating an electronic component.
As shown in FIG. 10, the connector 1 provided in Patent Document 1 accommodates a printed circuit board 6 in which a plurality of electronic components 5 are mounted in a housing 4 including an upper case 2 and a lower case 3. The terminal 7 connected to is connected to the terminal of the terminal of the external electric wire (not shown).

特許文献１で提供されているコネクタ１は電子部品５を実装したプリント基板６を内蔵しているため、コネクタに様々な機能を持たせることができ、通信回路の分岐点に抵抗器やコイルの電子部品を実装すると、分岐点における信号の反射を減衰することができる。
しかしながら、電子部品５を実装したプリント基板６をコネクタハウジング内に収容したコネクタ１とする場合、その製造工程において煩雑な実装工程が必要となると共に、多数の部品が必要となるためコスト高になり、かつ、コネクタが大型化する問題がある。 Since the connector 1 provided in Patent Document 1 includes a printed circuit board 6 on which an electronic component 5 is mounted, the connector can have various functions, and a resistor or a coil can be provided at a branch point of the communication circuit. When an electronic component is mounted, reflection of a signal at a branch point can be attenuated.
However, when the printed circuit board 6 on which the electronic component 5 is mounted is used as the connector 1 accommodated in the connector housing, a complicated mounting process is required in the manufacturing process, and a large number of components are required. And there exists a problem which a connector enlarges.

特開２００６−４８５２号公報JP 2006-4852 A

本発明は前記問題に鑑みてなされたものであり、分岐コネクタにおいて、通信回路の分岐点に信号の反射を低減する抵抗を設ける場合において、抵抗を実装しているプリント基板を不要として、部品点数を削減してコストの低下および分岐コネクタの小型化を図ることを課題としている。 The present invention has been made in view of the above problems. In the branch connector, when a resistor for reducing signal reflection is provided at the branch point of the communication circuit, the printed circuit board on which the resistor is mounted is unnecessary, and the number of components is reduced. The problem is to reduce the cost and reduce the size of the branch connector.

前記課題を解決するため、本発明は、幹線から複数の支線を分岐接続する位置に設ける分岐コネクタにおいて、
コネクタハウジング内に、
前記幹線に圧接される第１圧接端子部と複数の第２圧接端子部を間隔をあけて設けているジョイント用のバスバーと、
前記バスバーの第２圧接端子部と対向して配置される圧接端子部を一端に備えると共に、他端に前記支線との接続部を有する端子材と、
前記バスバーの各第２圧接端子部と前記各端子材の圧接端子部との間に介在させて圧接接続した抵抗材と、
を収容していることを特徴とする分岐コネクタを提供している。 In order to solve the above problems, the present invention provides a branch connector provided at a position where a plurality of branch lines are branched and connected from a main line.
In the connector housing,
A joint bus bar having a first pressure contact terminal portion pressed against the main line and a plurality of second pressure contact terminal portions spaced apart from each other;
A terminal material having a pressure contact terminal portion arranged at one end facing the second pressure contact terminal portion of the bus bar, and having a connection portion with the branch line at the other end,
A resistance material that is press-connected by being interposed between each second pressure contact terminal portion of the bus bar and the pressure contact terminal portion of each terminal material;
A branch connector characterized in that it is housed is provided.

本発明の分岐コネクタでは、コネクタハウジング内に抵抗を実装したプリント基板を収容して幹線接続回路から分岐する支線接続回路を接続しているのではなく、幹線接続回路側のバスバーの第２圧接端子部と支線接続回路側の端子材の圧接端子部との間に抵抗材を介在させて圧接接続している。
このように、幹線と接続されるバスバーと支線と接続される各端子材との分岐部に抵抗材を圧接接続により介設しているため、抵抗を基板に実装する煩雑な工程が不要となると共に抵抗を実装した基板が不要となる。よって、分岐コネクタを小型化できると共に低コスト化を図ることができる。また、抵抗を実装した基板を用いないため、抵抗を基板に実装する場合に発生する高温化による抵抗への悪影響もない。
また、幹線をバスバーの第１圧接端子部に圧接する作業と、抵抗材をバスバーの第２圧接端子部に圧接する作業とを同一工程で行うことができるため、さらに作業工数を低減することができる。 In the branch connector of the present invention, the second press contact terminal of the bus bar on the main connection circuit side is not connected to the branch connection circuit that accommodates the printed circuit board on which the resistor is mounted in the connector housing and branches from the main connection circuit. And a pressure contact terminal portion of the terminal material on the branch line connection circuit side with a resistance material interposed therebetween.
As described above, since the resistance material is interposed by pressure contact at the branch portion between the bus bar connected to the main line and each terminal material connected to the branch line, a complicated process of mounting the resistor on the substrate becomes unnecessary. In addition, a substrate on which a resistor is mounted is not necessary. Therefore, the branch connector can be reduced in size and cost can be reduced. In addition, since the substrate on which the resistor is mounted is not used, there is no adverse effect on the resistor due to the high temperature generated when the resistor is mounted on the substrate.
In addition, since the work of pressing the main line to the first pressure contact terminal portion of the bus bar and the work of pressing the resistance material to the second pressure contact terminal portion of the bus bar can be performed in the same process, the number of work steps can be further reduced. it can.

前記抵抗材は、両端にリード線を備えた抵抗器からなり、前記リード線を前記バスバーの第２圧接端子部と前記支線に接続される端子材の圧接端子部とに圧接接続されていることが好ましい。
前記抵抗器の抵抗値を通信回路の幹線のインピーダンス（Ｚｏ）の６％〜５０％、好ましくは１０％〜２２％とすることが好ましい。
前記６％以上であれば抵抗器をフィルタ回路として機能させて、通信回路の分岐部における信号の反射を減衰させることができる。一方、５０％を越えると受信側の電圧低下を招き通信エラーとなる。 The resistance material is composed of a resistor having lead wires at both ends, and the lead wire is press-connected to the second press contact terminal portion of the bus bar and the press contact terminal portion of the terminal material connected to the branch line. Is preferred.
The resistance value of the resistor is preferably 6% to 50%, preferably 10% to 22%, of the impedance (Zo) of the trunk line of the communication circuit.
If it is 6% or more, the resistor can function as a filter circuit, and the reflection of the signal at the branch portion of the communication circuit can be attenuated. On the other hand, if it exceeds 50%, a voltage drop on the receiving side is caused and a communication error occurs.

また、前記抵抗材は、電気抵抗率が４．２５×１０^−２μΩｍ〜２００×１０^−２μΩｍ、より好ましくは１００×１０^−２μΩｍ〜２００×１０^−２μΩｍ、の高抵抗線材からなり、該高抵抗線材は前記バスバーの第２圧接端子部と前記支線に接続される端子材の圧接端子部とに圧接接続され、
前記高抵抗線材が導体の単線あるいは撚り線がそれぞれ絶縁被覆された複数本の線材、あるいは導体を並列させて絶縁材で被覆されたフラットケーブルとされていてもよい。 The resistance material is made of a high resistance wire having an electrical resistivity of 4.25 × 10 ⁻² μΩm to 200 × 10 ⁻² μΩm, more preferably 100 × 10 ⁻² μΩm to 200 × 10 ⁻² μΩm. The high resistance wire is press-connected to the second press contact terminal portion of the bus bar and the press contact terminal portion of the terminal material connected to the branch line,
The high resistance wire may be a plurality of wires each having a single conductor wire or a stranded wire covered with insulation, or a flat cable covered with an insulating material in parallel with a conductor.

前記構成によれば、前記高抵抗線材の太さおよび長さを適宜調節して所要の抵抗値に設定することができ、抵抗値を前記抵抗器と同様、通信回路の幹線のインピーダンス（Ｚｏ）の６％〜５０％、好ましくは１０％〜２２％とすることが好ましい。 According to the said structure, the thickness and length of the said high resistance wire can be adjusted suitably, and it can set to required resistance value, and a resistance value is the impedance (Zo) of the trunk line of a communication circuit similarly to the said resistor. Is preferably 6% to 50%, more preferably 10% to 22%.

前記幹線および支線が差動伝送線路を構成する第１通信線と第２通信線からなるペア電線からなる場合には、
前記コネクタハウジング内に、前記幹線の第１通信線と第２通信線とにそれぞれ圧接接続させる一対の第１通信線用の前記バスバーと第２通信線用の前記バスバーが対向して収容され、
これら第１通信線用と第２通信線線用のバスバーとそれぞれ対向して前記支線の第１通信線と接続される端子材、第２通信線と接続される端子材が配置され、対向した前記バスバーの第２圧接端子部と前記端子材の圧接端子部とが夫々前記抵抗材を介して接続されていることが好ましい。 In the case where the trunk line and the branch line are composed of a pair electric wire composed of a first communication line and a second communication line constituting a differential transmission line,
In the connector housing, a pair of the bus bars for the first communication line and the bus bars for the second communication line, which are press-connected to the first communication line and the second communication line of the main line, are opposed to each other,
A terminal material connected to the first communication line of the branch line and a terminal material connected to the second communication line are arranged opposite to each of the bus bars for the first communication line and the second communication line. It is preferable that the 2nd press-contact terminal part of the said bus bar and the press-contact terminal part of the said terminal material are each connected via the said resistance material.

前記構成によれば、通信回路の幹線から支線が分岐する分岐部近傍の支線側に前記抵抗材からなるフィルタ回路を容易に形成することができ、該フィルタ回路により分岐部で生じる信号の反射を早期に減衰させることができる。 According to the above configuration, the filter circuit made of the resistance material can be easily formed on the branch line near the branch part where the branch line branches from the trunk line of the communication circuit, and the filter circuit can reflect the signal generated at the branch part. It can be attenuated early.

また、前記端子材に２つの圧接端子部を設け、一方の圧接端子部とバスバーの第２圧接端子部との間に前記抵抗材を圧接接続すると共に、他方の圧接端子部とバスバーの第２圧接端子部との間にコイルを圧接接続して、バスバーと端子材との間に抵抗材とコイルを並列接続していることが好ましい。
前記構成によれば、フィルタ回路としての機能を向上させることができ、該フィルタ回路により分岐部で生じる信号の反射をさらに早期に減衰させることができる。 The terminal material is provided with two pressure contact terminal portions, and the resistance material is pressure contacted between one pressure contact terminal portion and the second pressure contact terminal portion of the bus bar, and the other pressure contact terminal portion and the second of the bus bar. It is preferable that a coil is press-connected between the press contact terminal portion and a resistance material and the coil are connected in parallel between the bus bar and the terminal material.
According to the said structure, the function as a filter circuit can be improved and the reflection of the signal which arises in a branch part by this filter circuit can be attenuated further early.

前述したように、本発明によれば、幹線と接続したバスバーと支線と接続される各端子材との間に圧接接続により抵抗材を介設しているため、抵抗材を基板に実装する工程が不要となると共に抵抗材を実装した基板が不要となり、分岐コネクタを小型化できると共に低コスト化を図ることができる。
また、幹線をバスバーの第１圧接端子部に圧接する作業と、抵抗材をバスバーの第２圧接端子部に圧接する作業とを同一工程で行うことができるため、さらに作業工数を低減することができる。
さらに、通信回路の幹線から支線の接続分岐位置に抵抗からなるフィルタ回路を容易に設けることができ、該フィルタ回路により分岐部で生じる信号の反射を早期に減衰させることができる。 As described above, according to the present invention, since the resistance material is interposed between the bus bar connected to the main line and each terminal material connected to the branch line by pressure contact, the process of mounting the resistance material on the substrate And a board on which a resistance material is mounted becomes unnecessary, so that the branch connector can be miniaturized and the cost can be reduced.
In addition, since the work of pressing the main line to the first pressure contact terminal portion of the bus bar and the work of pressing the resistance material to the second pressure contact terminal portion of the bus bar can be performed in the same process, the number of work steps can be further reduced. it can.
Furthermore, it is possible to easily provide a filter circuit made of resistance at the connecting branch position of the communication circuit from the trunk line to the branch line, and the reflection of the signal generated at the branch portion can be attenuated at an early stage by the filter circuit.

本発明の実施形態を図面を参照して説明する。
図１乃至図５は、本発明の第１実施形態を示し、分岐コネクタ１０は、ＣＡＮ通信（差動伝送方式）を行う車載ＬＡＮ１００において、幹線１０１から支線１０２が分岐する分岐部１０３を形成するものである。 Embodiments of the present invention will be described with reference to the drawings.
1 to 5 show a first embodiment of the present invention. A branch connector 10 forms a branch portion 103 where a branch line 102 branches from a main line 101 in an in-vehicle LAN 100 that performs CAN communication (differential transmission method). Is.

分岐コネクタ１０のコネクタハウジング１１は、図２に示すように、上部側に複数の端子収容室１２をＺ方向の２列で並設しており、これら端子収容室１２のＺ方向の両側には端子収容室１２を跨いでＸ方向に延在するバスバー収容部１３を設けている。端子収容室１２は上下方向Ｙに延在すると共に上端開口を後述する端子材２０の挿入口とする一方、バスバー収容部１３はコネクタハウジング１１の上端面に設けた浅い溝状としている。 As shown in FIG. 2, the connector housing 11 of the branch connector 10 has a plurality of terminal accommodating chambers 12 arranged in parallel in two rows in the Z direction on the upper side, and on both sides in the Z direction of these terminal accommodating chambers 12. A bus bar accommodating portion 13 extending in the X direction across the terminal accommodating chamber 12 is provided. The terminal accommodating chamber 12 extends in the vertical direction Y and the upper end opening serves as an insertion port for a terminal member 20 described later, while the bus bar accommodating portion 13 has a shallow groove shape provided on the upper end surface of the connector housing 11.

一方、コネクタハウジング１１の下部側には、図５に示すように、コネクタ嵌合部１６を設け、該コネクタ嵌合部１６と各端子収容室１２とを連通させている。
また、端子収容室１２およびコネクタ嵌合部１６には、それぞれ端子収容室１２、コネクタ嵌合部１６に挿入する端子材２０、コネクタ４０を係止するための係止突起１２ａ、係止溝１６ａをコネクタハウジング１１の内面に設けている。さらに、コネクタハウジング１１の外面には、所要箇所にコネクタハウジング１１に取り付けるカバー１７を係止固定するための係止突起１１ａを突設している。 On the other hand, as shown in FIG. 5, a connector fitting portion 16 is provided on the lower side of the connector housing 11 so that the connector fitting portion 16 communicates with each terminal accommodating chamber 12.
Further, the terminal accommodating chamber 12 and the connector fitting portion 16 are respectively provided with the terminal accommodating chamber 12, the terminal material 20 to be inserted into the connector fitting portion 16, the locking protrusion 12a for locking the connector 40, and the locking groove 16a. Is provided on the inner surface of the connector housing 11. Further, on the outer surface of the connector housing 11, a locking projection 11 a for locking and fixing the cover 17 attached to the connector housing 11 is provided at a required location.

前記コネクタハウジング１１の端子収容室１２に収容する端子材２０は、図５に示すように、一端に先端から圧接スロットを切り欠いた圧接タブを対向させて一対設け、該一対の圧接タブを１つの圧接端子部２０ａとする一方、他端を電線端末に接続された雌形状の端子５３と接続する雄タブ状の接続部２０ｂとしている。
前記端子材２０をコネクタハウジング１１の端子収容室１２に挿入し、端子材２０を端子収容室１２側の係止突起１２ａに係止させて、端子材２０を端子収容室１２内に係止固定している。このとき、端子材２０の接続部２０ｂはコネクタハウジング１１のコネクタ嵌合部１６内に突出している。 As shown in FIG. 5, the terminal material 20 accommodated in the terminal accommodating chamber 12 of the connector housing 11 is provided with a pair of pressure-contact tabs each having a pressure-contact slot cut out from the tip at one end. One pressure contact terminal portion 20a is provided, and the other end is a male tab-like connection portion 20b connected to a female terminal 53 connected to the wire terminal.
The terminal material 20 is inserted into the terminal housing chamber 12 of the connector housing 11, the terminal material 20 is locked to the locking protrusion 12 a on the terminal housing chamber 12 side, and the terminal material 20 is locked and fixed in the terminal receiving chamber 12. is doing. At this time, the connection portion 20 b of the terminal material 20 protrudes into the connector fitting portion 16 of the connector housing 11.

前記コネクタハウジング１１のバスバー収容部１３に収容するジョイント用のバスバー２１は、図２に示すように、Ｘ方向に延在するジョイント部２１ａと、該ジョイント部２１ａの幅方向（Ｚ方向）の両端から上方に向けて突出する圧接端子部２１ｂ、２１ｃとからなる。幹線１０１に圧接接続される第１圧接端子部２１ｂと後述する抵抗器３０のリード線３０ａに圧接接続される第２圧接端子部２１ｃは、それぞれジョイント部２１ａの幅方向両端から対向させて突出させた一対の圧接タブからなり、各バスバー２１に１組の第１圧接端子部２１ｂと複数組（本実施形態では６組）の第２圧接端子部２１ｃを設けている。なお、各バスバー２１の第１圧接端子部２１ｂはＸ方向に互いに位置ズレさせている。
前記バスバー２１をコネクタハウジング１１のバスバー収容部１３に収容しており、第１圧接端子部２１ｂは密集配置した端子材２０のＸ方向の一側部に配置される一方、第２圧接端子部２１ｃは端子材２０の圧接端子部２０ａとそれぞれ対向する位置に配置されている。 As shown in FIG. 2, the joint bus bar 21 accommodated in the bus bar accommodating portion 13 of the connector housing 11 includes a joint portion 21a extending in the X direction and both ends in the width direction (Z direction) of the joint portion 21a. And press-contact terminal portions 21b and 21c protruding upward. A first press contact terminal portion 21b that is press-connected to the main line 101 and a second press contact terminal portion 21c that is press-connected to a lead wire 30a of a resistor 30 to be described later are protruded from both ends in the width direction of the joint portion 21a. Each bus bar 21 is provided with one set of first press contact terminal portions 21b and a plurality of sets (six sets in this embodiment) of second press contact terminal portions 21c. In addition, the 1st press-contact terminal part 21b of each bus-bar 21 is mutually displaced in the X direction.
The bus bar 21 is accommodated in the bus bar accommodating portion 13 of the connector housing 11, and the first press contact terminal portion 21b is disposed on one side of the densely arranged terminal member 20 in the X direction, while the second press contact terminal portion 21c. Are arranged at positions facing the pressure contact terminal portions 20a of the terminal material 20, respectively.

バスバー２１と端子材２０との間に介在される抵抗器３０は抵抗値を１０Ωとしており、両端にリード線３０ａ、３０ｂを備え、図３に示すように、該リード線３０ａ、３０ｂをコ字状に折り返している。
一方のリード線３０ａの折り返した先端側にバスバー２１の第２圧接端子部２１ｃを圧接接続する一方、他方のリード線３０ｂの折り返した先端側に端子材２０の圧接端子部２０ａを圧接接続し、抵抗器３０をバスバー２１の第２圧接端子部２１ｃと端子材２０の圧接端子部２０ａの側方位置に配置している。これにより、バスバー２１の第２圧接端子部２１ｃと端子材２０の圧接端子部２０ａとを狭ピッチで配置できるようにしている。
また、図３に示すように、一方のバスバー２１Ａの第１圧接端子部２１ｂを幹線１０１の第１通信線１０１Ａ（ＣＡＮ＿Ｈ）に圧接接続する一方、他方のバスバー２１Ｂの第１圧接端子部２１ｂを幹線１０１の第２通信線１０１Ｂ（ＣＡＮ＿Ｌ）に圧接接続している。 The resistor 30 interposed between the bus bar 21 and the terminal material 20 has a resistance value of 10Ω, and is provided with lead wires 30a and 30b at both ends. As shown in FIG. It is folded back into a shape.
The second press-contact terminal portion 21c of the bus bar 21 is press-connected to the folded tip side of one lead wire 30a, while the press-contact terminal portion 20a of the terminal member 20 is press-connected to the folded tip side of the other lead wire 30b, The resistor 30 is arranged at a side position of the second press contact terminal portion 21 c of the bus bar 21 and the press contact terminal portion 20 a of the terminal material 20. Thereby, the 2nd press-contact terminal part 21c of the bus-bar 21 and the press-contact terminal part 20a of the terminal material 20 can be arrange | positioned now at a narrow pitch.
Further, as shown in FIG. 3, the first press contact terminal portion 21b of one bus bar 21A is press-connected to the first communication line 101A (CAN_H) of the main line 101, while the first press contact terminal portion 21b of the other bus bar 21B is connected. The main line 101 is press-connected to the second communication line 101B (CAN_L).

前記コネクタハウジング１１の上面を閉鎖するカバー１７は、該上面を閉鎖する上壁１７ａと該上壁１７ａの周縁から突出した周壁１７ｂからなり、図４及び図５に示すように、上壁１７ａに、端子材２０の圧接端子部２０ａ及びバスバー２１の第１、第２圧接端子部２１ｂ、２１ｃの先端部を挿入する貫通孔１７ｃを設けている。また、カバー１７の周壁１７ｂ内面の所要箇所には、コネクタハウジング１１の外面に設けた係止突起１１ａを係止するための係止凹部（図示せず）を設けている。
前記カバー１７をコネクタハウジング１１の前記上面側に被せ、コネクタハウジング１１の係止突起１１ａをカバー１７の係止凹部に係止して、カバー１７をコネクタハウジング１１に取り付けている。このとき、端子材２０の圧接端子部２０ａ及びバスバー２１の第１、第２圧接端子部２１ｂ、２１ｃの先端部がカバー１７の上壁１７ａに設けた貫通孔１７ｃに挿入され、圧接端子部２０ａ、２１ｂ、２１ｃの幅方向（Ｘ方向）の両端が貫通孔１７ｃの内面に当接し、圧接スロットの開きが防止された状態となる。 The cover 17 that closes the upper surface of the connector housing 11 includes an upper wall 17a that closes the upper surface and a peripheral wall 17b that protrudes from the periphery of the upper wall 17a. As shown in FIGS. A through hole 17c is provided for inserting the press contact terminal portion 20a of the terminal member 20 and the first and second press contact terminal portions 21b and 21c of the bus bar 21. Further, a locking recess (not shown) for locking the locking projection 11 a provided on the outer surface of the connector housing 11 is provided at a required position on the inner surface of the peripheral wall 17 b of the cover 17.
The cover 17 is placed on the upper surface side of the connector housing 11, the locking projection 11 a of the connector housing 11 is locked to the locking recess of the cover 17, and the cover 17 is attached to the connector housing 11. At this time, the pressure contact terminal portion 20a of the terminal material 20 and the first and second pressure contact terminal portions 21b and 21c of the bus bar 21 are inserted into the through holes 17c provided in the upper wall 17a of the cover 17, and the pressure contact terminal portion 20a. , 21b, 21c in the width direction (X direction) are in contact with the inner surface of the through-hole 17c, and the press-contact slot is prevented from being opened.

前記コネクタハウジング１１のコネクタ嵌合部１６に嵌合するコネクタ４０のコネクタハウジング４１には、図５に示すように、Ｚ方向に２つの端子収容室４２を並設している。該コネクタ４０は差動伝送線路の支線１０２を構成するツイストペア電線の一端末に接続されるものであり、一方の端子収容室４２Ａには、支線１０２の第１通信線１０２Ａ（ＣＡＮ＿Ｈ）の端末に接続した端子５３Ａが挿入係止されている一方、他方の端子収容室４２Ｂには、ツイストペア電線の第２通信線１０２Ｂ（ＣＡＮ＿Ｌ）の端末に接続した端子５３Ｂが挿入係止されている。
また、コネクタハウジング４１の挿入側先端から弾性片４３を折り返して設けており、該弾性片４３の外面に分岐コネクタ１０のコネクタ嵌合部１６に設けた係止溝１６ａに係止させる係止突起４４を設けている。
なお、支線１０２の他端には電子制御ユニット等の電子機器が接続されている。 As shown in FIG. 5, two terminal accommodating chambers 42 are juxtaposed in the Z direction in the connector housing 41 of the connector 40 that fits into the connector fitting portion 16 of the connector housing 11. The connector 40 is connected to one end of a twisted pair electric wire constituting the branch line 102 of the differential transmission line. One terminal accommodating chamber 42A is connected to the terminal of the first communication line 102A (CAN_H) of the branch line 102. While the connected terminal 53A is inserted and locked, in the other terminal accommodating chamber 42B, the terminal 53B connected to the terminal of the second communication line 102B (CAN_L) of the twisted pair electric wire is inserted and locked.
Further, the elastic piece 43 is provided by folding back from the distal end on the insertion side of the connector housing 41, and a locking projection for locking to a locking groove 16 a provided in the connector fitting portion 16 of the branch connector 10 on the outer surface of the elastic piece 43. 44 is provided.
Note that an electronic device such as an electronic control unit is connected to the other end of the branch line 102.

前記ツイストペア電線端末のコネクタ４０を分岐コネクタ１０のコネクタ嵌合部１６に所要の複数個（本実施形態では６個）挿入し、コネクタ４０の係止突起４４を分岐コネクタ１０の係止溝１６ａに係止させてコネクタ４０を分岐コネクタ１０のコネクタ嵌合部１６内に嵌合している。このとき、分岐コネクタ１０の一方のバスバー２１Ａに対向させて配置した端子材２０Ａの接続部２０ｂとコネクタ４０の端子５３Ａがそれぞれ雌雄嵌合接続されると共に、他方のバスバー２１Ｂに対向させて配置した端子材２０Ｂの接続部２０ｂとコネクタ４０の端子５３Ｂがそれぞれ雌雄嵌合接続される。これにより、支線１０２の第１通信線１０２Ａがそれぞれ端子５３Ａ、端子材２０Ａ、抵抗器３０、バスバー２１Ａを介して幹線１０１の第１通信線１０１Ａと接続される一方、支線１０２の第２通信線１０２Ｂがそれぞれ端子５３Ｂ、端子材２０Ｂ、抵抗器３０、バスバー２１Ｂを介して幹線１０１の第２通信線１０１Ｂと接続され、分岐コネクタ１０によって幹線１０１から支線１０２が分岐した分岐部が形成される。 The required number of connectors 40 of the twisted pair electric wire terminals are inserted into the connector fitting portion 16 of the branch connector 10 (six in this embodiment), and the locking protrusions 44 of the connector 40 are inserted into the locking grooves 16 a of the branch connector 10. The connector 40 is fitted into the connector fitting portion 16 of the branch connector 10 by being locked. At this time, the connecting portion 20b of the terminal member 20A arranged to face one bus bar 21A of the branch connector 10 and the terminal 53A of the connector 40 are respectively male and female fitted and arranged to face the other bus bar 21B. The connecting portion 20b of the terminal material 20B and the terminal 53B of the connector 40 are male and female connected to each other. Thereby, the first communication line 102A of the branch line 102 is connected to the first communication line 101A of the trunk line 101 via the terminal 53A, the terminal material 20A, the resistor 30, and the bus bar 21A, respectively, while the second communication line of the branch line 102 102B is connected to the second communication line 101B of the trunk line 101 via the terminal 53B, the terminal material 20B, the resistor 30, and the bus bar 21B, respectively, and a branching portion in which the branch line 102 is branched from the trunk line 101 by the branch connector 10 is formed.

次に、前記分岐コネクタ１０の組立方法および該分岐コネクタ１０による通信回路の分岐部の形成方法について説明する。
まず、分岐コネクタ１０のコネクタハウジング１１の端子収容室１２に端子材２０を挿入係止した後、バスバー収容部１３にバスバー２１を挿入して収容する。
次いで、バスバー２１Ａ、２１Ｂの第１圧接端子部２１ｂを幹線１０１の第１、第２通信線１０１Ａ、１０１Ｂにそれぞれ圧接接続すると共に、対向配置されたバスバー２１の第２圧接端子部２１ｃと端子材２０の圧接端子部２０ａを抵抗器３０の両端のリード線３０ａ、３０ｂにそれぞれ圧接接続する。
次いで、コネクタハウジング１１の上面にカバー１７を取り付ける。
最後に、ワイヤハーネスの配索工程において、支線１０２の端末に接続されたコネクタ４０を分岐コネクタ１０のコネクタ嵌合部１６に嵌合して、各支線１０２の第１、第２通信線１０２Ａ、１０２Ｂをそれぞれ幹線１０１の第１、第２通信線１０１Ａ、１０１Ｂに接続して分岐部１０３を形成する。 Next, a method for assembling the branch connector 10 and a method for forming a branch portion of a communication circuit using the branch connector 10 will be described.
First, after inserting and locking the terminal material 20 in the terminal accommodating chamber 12 of the connector housing 11 of the branch connector 10, the bus bar 21 is inserted and accommodated in the bus bar accommodating portion 13.
Next, the first press contact terminal portion 21b of the bus bar 21A, 21B is press connected to the first and second communication lines 101A, 101B of the trunk line 101, respectively, and the second press contact terminal portion 21c of the bus bar 21 arranged opposite to the terminal material. The 20 press contact terminal portions 20a are press connected to the lead wires 30a and 30b at both ends of the resistor 30, respectively.
Next, the cover 17 is attached to the upper surface of the connector housing 11.
Finally, in the wiring harness routing process, the connector 40 connected to the terminal of the branch line 102 is fitted into the connector fitting portion 16 of the branch connector 10, and the first and second communication lines 102 </ b> A of each branch line 102 are connected. 102B is connected to the first and second communication lines 101A and 101B of the trunk line 101 to form a branching unit 103.

前記構成によれば、通信回路の幹線から分岐する支線回路上に抵抗器３０を設けて、フィルタ回路を形成することができ、該フィルタ回路により分岐部で生じる信号の反射を早期に減衰させることができる。
また、前記抵抗器３０の両端のリード線３０ａ、３０ｂにバスバー２１の第２圧接端子部２１ｃ、端子材２０の圧接端子部２０ａをそれぞれ圧接接続しているため、抵抗器３０を基板に実装する煩雑な工程が不要となると共に基板をコネクタハウジング内に収容する必要もなくなり、分岐コネクタを小型化できると共に低コスト化を図ることができる。
また、電子部品を基板に実装しないため、実装工程における高温化による電子部品の悪影響もない。 According to the above configuration, the resistor 30 can be provided on the branch circuit branched from the trunk line of the communication circuit to form a filter circuit, and the reflection of the signal generated at the branching portion can be attenuated early by the filter circuit. Can do.
Further, since the second press contact terminal portion 21c of the bus bar 21 and the press contact terminal portion 20a of the terminal member 20 are respectively press-connected to the lead wires 30a and 30b at both ends of the resistor 30, the resistor 30 is mounted on the substrate. A complicated process is not required, and it is not necessary to house the board in the connector housing, so that the branch connector can be reduced in size and cost can be reduced.
Further, since the electronic component is not mounted on the substrate, there is no adverse effect of the electronic component due to the high temperature in the mounting process.

なお、本実施形態では、分岐コネクタ１０に差動伝送線路を構成するツイストペア電線を接続しているため、端子材２０およびバスバーを２組設けているが、ペア電線以外の電線を接続する場合には、端子材２０とバスバー２１を１組あるいは３組以上設けてもよい。
また、分岐コネクタ１０に接続するペア電線はツイストペア電線に限らず、シールドツイストペア電線等であってもよい。 In addition, in this embodiment, since the twisted pair electric wire which comprises a differential transmission line is connected to the branch connector 10, two sets of terminal materials 20 and bus bars are provided, However, When connecting electric wires other than a pair electric wire The terminal member 20 and the bus bar 21 may be provided in one set or three or more sets.
Moreover, the pair electric wire connected to the branch connector 10 is not limited to the twisted pair electric wire but may be a shielded twisted pair electric wire or the like.

図６は、第１実施形態の変形例を示す。
本変形例では、各端子材２０に、対向させた一対の圧接タブからなる圧接端子部２０ａを２組ずつ設けている。
一方の圧接端子部２０ａ−１とバスバー２１の第２圧接端子部２１ｃ−１を第１実施形態と同様の抵抗器３０のリード線３０ｂ、３０ａにそれぞれ圧接接続する一方、他方の圧接端子部２０ａ−２とバスバー２１の第２圧接端子部２１ｃ−２をコイル３１のリード線３１ｂ、３１ａに圧接接続して、端子材２０とバスバー２１との間に抵抗器３０とコイル３１を並列接続で介在させている。 FIG. 6 shows a modification of the first embodiment.
In this modification, each terminal member 20 is provided with two sets of press contact terminal portions 20a each composed of a pair of press contact tabs opposed to each other.
One press contact terminal portion 20a-1 and the second press contact terminal portion 21c-1 of the bus bar 21 are press-connected to the lead wires 30b and 30a of the resistor 30 similar to the first embodiment, respectively, while the other press contact terminal portion 20a. -2 and the second press-contact terminal portion 21c-2 of the bus bar 21 are press-connected to the lead wires 31b and 31a of the coil 31, and the resistor 30 and the coil 31 are interposed in parallel between the terminal material 20 and the bus bar 21. I am letting.

前記構成によれば、幹線から支線が分岐する分岐部近傍に設けたフィルタ回路を抵抗器だけでなく、抵抗器とコイルを並列接続した回路により構成することができるため、フィルタ回路としての機能を向上させることができ、該フィルタ回路により分岐部で生じる信号の反射をさらに早期に減衰させることができる。
なお、他の構成及び作用効果は第１実施形態と同様のため、同一の符号を付して説明を省略する。 According to the above configuration, the filter circuit provided in the vicinity of the branch portion where the branch line branches from the main line can be configured not only by the resistor but also by a circuit in which the resistor and the coil are connected in parallel. The reflection of the signal generated at the branch portion can be attenuated earlier by the filter circuit.
In addition, since another structure and an effect are the same as that of 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

図７及び図８は、本発明の第２実施形態を示す。
本実施形態では、バスバー２１と端子材２０との間に介在させる抵抗材を第１実施形態と相違させており、抵抗材を抵抗器３０に替えて、電気抵抗率が１００×１０^−２μΩｍの高抵抗の導体３２を並列させて絶縁材３３で被覆したフラットケーブルからなる高抵抗線材３４としている。なお、高抵抗線材３４の抵抗値は第１実施形態の抵抗器と同一としている。
バスバー２１の第２圧接端子部２１ｃと端子材２０の圧接端子部２０ａをフラットケーブルからなる高抵抗線材３４に貫通させて、高抵抗線材３４の導体３２に圧接端子部２１ｃ、２０ａを圧接接続している。 7 and 8 show a second embodiment of the present invention.
In the present embodiment, the resistance material interposed between the bus bar 21 and the terminal material 20 is different from that of the first embodiment, and the resistance material is changed to the resistor 30 and the electric resistivity is 100 × 10 ⁻² μΩm. The high-resistance wire 34 is made of a flat cable in which a plurality of high-resistance conductors 32 are arranged in parallel and covered with an insulating material 33. The resistance value of the high resistance wire 34 is the same as that of the resistor of the first embodiment.
The second press contact terminal portion 21c of the bus bar 21 and the press contact terminal portion 20a of the terminal material 20 are passed through the high resistance wire 34 made of a flat cable, and the press contact terminal portions 21c and 20a are press connected to the conductor 32 of the high resistance wire 34. ing.

また、コネクタハウジング１１の周壁上端にバスバー２１の圧接端子部２１ｂ、２１ｃと対向する位置に円弧状の溝部１１ｂを設ける一方、カバー１７の周壁１７ｂの下端にも円弧状の溝部１７ｄを設けており、これら溝部１１ｂと１７ｄで高抵抗線材３４の導体３２を上下両側から挟持している。 An arc-shaped groove 11b is provided at the upper end of the peripheral wall of the connector housing 11 at a position facing the press contact terminal portions 21b and 21c of the bus bar 21, while an arc-shaped groove 17d is also provided at the lower end of the peripheral wall 17b of the cover 17. The conductors 32 of the high resistance wire 34 are sandwiched from both the upper and lower sides by the grooves 11b and 17d.

前記構成によれば、バスバー２１と端子材２０との間に介在させる抵抗材としてフラットケーブルからなる高抵抗線材３４を用いているため、さらに低コスト化を図ることができ、高抵抗線材３４の導体３２の太さや長さを適宜調節することにより所要の抵抗値に設定することができる。
なお、他の構成及び作用効果は第１実施形態と同様のため、同一の符号を付して説明を省略する。 According to the said structure, since the high resistance wire 34 which consists of a flat cable is used as a resistance material interposed between the bus-bar 21 and the terminal material 20, cost reduction can be further achieved, and the high resistance wire 34 of the high resistance wire 34 can be achieved. The required resistance value can be set by appropriately adjusting the thickness and length of the conductor 32.
In addition, since another structure and an effect are the same as that of 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

図９は、本発明の第３実施形態を示す。
本実施形態では、抵抗材を、電気抵抗率が１００×１０^−２μΩｍの高抵抗の導体３２の単線あるいは撚り線を絶縁材３３で絶縁被覆した複数本の線材からなる高抵抗線材３５としている。
バスバー２１の第２圧接端子部２１ｃと端子材２０の圧接端子部２０ａの圧接刃で高抵抗線材３５の絶縁材３３を切断し、前記圧接端子部２１ｃ、２０ａを導体３２に圧接接続している。
なお、他の構成及び作用効果は第1実施形態と同様のため、同一の符号を付して説明を省略する。 FIG. 9 shows a third embodiment of the present invention.
In the present embodiment, the resistance material is a high resistance wire 35 made of a plurality of wires in which a single wire or a stranded wire of a high resistance conductor 32 having an electrical resistivity of 100 × 10 ⁻² μΩm is covered with an insulating material 33. .
The insulation material 33 of the high resistance wire 35 is cut by the pressure contact blade of the second pressure contact terminal portion 21c of the bus bar 21 and the pressure contact terminal portion 20a of the terminal material 20, and the pressure contact terminal portions 21c and 20a are pressure connected to the conductor 32. .
Since other configurations and operational effects are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

本発明の分岐コネクタにより形成した分岐部を示す概略図である。It is the schematic which shows the branch part formed with the branch connector of this invention. 本発明の第１実施形態の分岐コネクタのコネクタハウジングにバスバー及び端子材を収容した状態を示し、（Ａ）は斜視図、（Ｂ）は平面図である。The state which accommodated the bus-bar and the terminal material in the connector housing of the branch connector of 1st Embodiment of this invention is shown, (A) is a perspective view, (B) is a top view. 第１実施形態の分岐コネクタに幹線を接続した状態を示し、（Ａ）は斜視図、（Ｂ）は平面図である。The state which connected the trunk line to the branch connector of 1st Embodiment is shown, (A) is a perspective view, (B) is a top view. 第１実施形態の分岐コネクタにより形成した分岐部を示す図面である。It is drawing which shows the branch part formed with the branch connector of 1st Embodiment. 分岐コネクタに支線端末に接続されたコネクタを嵌合した状態を示す断面図である。It is sectional drawing which shows the state which fitted the connector connected to the branch line terminal to the branch connector. 第１実施形態の変形例を示す図面である。It is drawing which shows the modification of 1st Embodiment. 第２実施形態の分岐コネクタに幹線を接続した状態を示し、（Ａ）は斜視図、（Ｂ）は要部拡大断面図である。The state which connected the trunk line to the branch connector of 2nd Embodiment is shown, (A) is a perspective view, (B) is a principal part expanded sectional view. 第２実施形態の分岐コネクタにより形成した分岐部を示す図面である。It is drawing which shows the branch part formed with the branch connector of 2nd Embodiment. 第３実施形態の分岐コネクタに幹線を接続した状態を示し、（Ａ）は平面図、（Ｂ）は要部拡大断面図である。The state which connected the trunk line to the branch connector of 3rd Embodiment is shown, (A) is a top view, (B) is a principal part expanded sectional view. 従来例を示す図面である。It is drawing which shows a prior art example.

Explanation of symbols

１０分岐コネクタ
１１コネクタハウジング
１２端子収容室
１３バスバー収容部
２０端子材
２０ａ圧接端子部
２０ｂ接続部
２１バスバー
２１ａジョイント部
２１ｂ第１圧接端子部
２１ｃ第２圧接端子部
３０抵抗器
３０ａ、３０ｂリード線
４０コネクタ
５３端子
１００車載ＬＡＮ
１０１Ａ幹線の第１通信線
１０１Ｂ幹線の第２通信線
１０２Ａ支線の第１通信線
１０２Ｂ支線の第２通信線
１０３分岐部 DESCRIPTION OF SYMBOLS 10 Branch connector 11 Connector housing 12 Terminal accommodating chamber 13 Bus bar accommodating part 20 Terminal material 20a Pressure contact terminal part 20b Connection part 21 Bus bar 21a Joint part 21b 1st press contact terminal part 21c 2nd press contact terminal part 30 Resistor 30a, 30b Lead wire 40 Connector 53 Terminal 100 In-vehicle LAN
101A trunk first communication line 101B trunk second communication line 102A branch first communication line 102B branch second communication line 103 branching section

Claims

In the branch connector provided at the position where a plurality of branch lines are branched and connected from the main line,
In the connector housing,
A joint bus bar having a first pressure contact terminal portion pressed against the main line and a plurality of second pressure contact terminal portions spaced apart from each other;
A terminal material having a pressure contact terminal portion arranged at one end facing the second pressure contact terminal portion of the bus bar, and having a connection portion with the branch line at the other end,
A resistance material that is press-connected by being interposed between each second pressure contact terminal portion of the bus bar and the pressure contact terminal portion of each terminal material;
A branch connector characterized by housing a cable.

The said resistance material consists of a resistor provided with the lead wire at both ends, and the said lead wire is press-contacted to the 2nd press-contact terminal part of the said bus-bar, and the press-contact terminal part of the terminal material connected to the said branch line. Item 12. The branch connector according to item 1.

The resistance material is made of a high resistance wire having an electric resistivity of 4.25 × 10 ⁻² μΩm or more, and the high resistance wire is a pressure contact terminal of a terminal material connected to the second pressure contact terminal portion of the bus bar and the branch line. Is press-connected to the
2. The branch connector according to claim 1, wherein the high resistance wire is a plurality of wires each having a single conductor wire or a stranded wire covered with an insulating coating, or a flat cable covered with an insulating material in parallel with a conductor.

The trunk line and the branch line are a pair electric wire composed of a first communication line and a second communication line constituting a differential transmission line,
In the connector housing, a pair of the bus bars for the first communication line and the bus bars for the second communication line, which are press-connected to the first communication line and the second communication line of the main line, are opposed to each other,
A terminal material connected to the first communication line of the branch line and a terminal material connected to the second communication line are arranged opposite to each of the bus bars for the first communication line and the second communication line. The branch connector according to any one of claims 1 to 3, wherein the second press contact terminal portion of the bus bar and the press contact terminal portion of the terminal material are connected to each other via the resistance material.