JP2006325355A - Electrical connection box - Google Patents

Electrical connection box Download PDF

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JP2006325355A
JP2006325355A JP2005147577A JP2005147577A JP2006325355A JP 2006325355 A JP2006325355 A JP 2006325355A JP 2005147577 A JP2005147577 A JP 2005147577A JP 2005147577 A JP2005147577 A JP 2005147577A JP 2006325355 A JP2006325355 A JP 2006325355A
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terminal
connector
bus bar
support member
circuit board
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JP2005147577A
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JP4723907B2 (en
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Tomoki Kano
智樹 加納
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Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To enhance the holding power of a connector terminal regarding electrical connection box of automobile or the like. <P>SOLUTION: Ends of a connector terminal 55 and a bus bar terminal 27 are housed in a connector section 60. A terminal block 50 to which the connector terminal 55 is press fitted is fixed to the upper surface of the bending margin 26 of the bus bar terminal 27. Holding force of the connector terminal 55 is enhanced, by providing the terminal block 50 for regulating displacement of the connector terminal 55 in the direction of fitting on the back side of the connector section 60. Accordingly, when the mating connector is fitted and removed repeatedly, deformation of the connector terminal 55 and occurrence of solder crack can be prevented. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、電気接続箱に関するものである。   The present invention relates to an electrical junction box.

従来、自動車等に装備される電気接続箱の一例として、表裏両面に配電路が形成された回路基板の裏面側に絶縁層を介してバスバー基板を接着してなる回路構成体をケース内に収容したものが知られている（例えば特許文献１参照）。このような電気接続箱において、ケースの一端部に相手コネクタが嵌合される合成樹脂製のコネクタ部を設けるとともに、このコネクタ部内にコネクタ端子を配して、このコネクタ端子の一端部を外側に延出させて、回路基板に設けたスルーホールに挿通させ、回路基板の裏面の配電路に半田付けにより接続した構成のものがある。
特開２００３−１６４０３９公報 Conventionally, as an example of an electrical junction box equipped in an automobile or the like, a circuit structure formed by bonding a bus bar substrate to an insulating layer on the back side of a circuit board having power distribution paths formed on both front and back surfaces is accommodated in a case. Is known (see, for example, Patent Document 1). In such an electrical connection box, a connector portion made of a synthetic resin to which a mating connector is fitted is provided at one end portion of the case, and a connector terminal is arranged in the connector portion, and one end portion of the connector terminal is arranged outside. There is a configuration that is extended and inserted into a through hole provided in a circuit board and connected to a power distribution path on the back surface of the circuit board by soldering.
JP 2003-164039 A

上記のようなコネクタ端子は、一般的には、コネクタ部に対し圧入係止されるが、例えばコネクタ端子を先に回路構成体側に取り付け、後からコネクタ部と回路構成体とを組み付ける場合などには、コネクタ端子をコネクタ部に圧入させるのが困難なことがある。
このように製造工程の都合上、コネクタ端子がコネクタ部に圧入されないで単にコネクタ部の奥壁に挿通されるような場合には、コネクタ端子に対する保持力が弱いので、コネクタ部に相手コネクタが嵌合・離脱される度に、コネクタ端子に負荷がかかり、端子が変形したり、半田付け部分にクラックが生じたりするおそれがある。
本発明は上記のような事情に基づいて完成されたものであって、その目的は、コネクタ端子の保持力を高めるところにある。 The connector terminal as described above is generally press-fitted and locked to the connector portion. For example, when the connector terminal is first attached to the circuit component side and the connector portion and the circuit component are assembled later May be difficult to press-fit the connector terminals into the connector portion.
Thus, for convenience of the manufacturing process, when the connector terminal is not press-fitted into the connector part and is simply inserted through the back wall of the connector part, the holding force against the connector terminal is weak, so the mating connector is fitted into the connector part. Each time the connector is connected / disconnected, a load is applied to the connector terminal, and the terminal may be deformed or a crack may occur in the soldered portion.
The present invention has been completed based on the above circumstances, and an object thereof is to increase the holding force of the connector terminals.

上記の目的を達成するための手段として、請求項１の発明に係る電気接続箱は、導電路が形成された回路基板の裏面に前記導電路に電気的に接続されるバスバー基板が取り付けられてなる回路構成体と、相手コネクタと嵌合可能なコネクタ部と、前記導電路と電気的に接続され、かつ前記コネクタ部における嵌合方向の後側の壁面を貫通して前記コネクタ部内に突出するコネクタ端子と、前記コネクタ部と別体に形成されるとともに、コネクタ部の前記嵌合方向の後側に配置され、前記コネクタ端子の前記嵌合方向への変位を規制する端子支持部材と、を備えたところに特徴を有する。   As a means for achieving the above object, in the electrical junction box according to the invention of claim 1, a bus bar board electrically connected to the conductive path is attached to the back surface of the circuit board on which the conductive path is formed. And a connector part that can be mated with a mating connector, and is electrically connected to the conductive path and penetrates the rear wall surface in the mating direction of the connector part and projects into the connector part. A connector terminal, and a terminal support member that is formed separately from the connector portion and is disposed on the rear side of the connector portion in the fitting direction, and restricts displacement of the connector terminal in the fitting direction. It is characterized by the provision.

請求項２の発明は、請求項１に記載のものにおいて、前記コネクタ端子は、前記端子支持部材に対して圧入係止されているところに特徴を有する。   The invention of claim 2 is characterized in that, in the invention of claim 1, the connector terminal is press-fitted and locked to the terminal support member.

請求項３の発明は、請求項１または請求項２に記載のものにおいて、前記コネクタ端子の一端部が前記回路基板の表面側において前記導電路に接続されているところに特徴を有する。   According to a third aspect of the present invention, in the first or second aspect of the present invention, one end of the connector terminal is connected to the conductive path on the surface side of the circuit board.

請求項４の発明は、請求項１または請求項２に記載のものにおいて、前記コネクタ端子の一端部は、前記回路基板に設けられたスルーホールを通して、前記バスバー基板の表面側に接続されているところに特徴を有する。   According to a fourth aspect of the present invention, in the first or second aspect of the present invention, one end of the connector terminal is connected to the surface side of the bus bar substrate through a through hole provided in the circuit substrate. However, it has characteristics.

請求項５の発明は、請求項１から請求項４のいずれかに記載のものにおいて、前記バスバー基板の一端部には、前記コネクタ部内に収容されるバスバー端子が形成されているところに特徴を有する。   The invention of claim 5 is characterized in that, in one of claims 1 to 4, a bus bar terminal accommodated in the connector portion is formed at one end of the bus bar substrate. Have.

請求項６の発明は、請求項５に記載のものにおいて、前記バスバー端子は、前記回路基板の端縁から面一状に延出した曲げ代の先端部を厚み方向に屈曲して形成されており、前記端子支持部材は前記曲げ代における前記バスバー端子側の面上に配置されているところに特徴を有する。   According to a sixth aspect of the present invention, in the fifth aspect, the bus bar terminal is formed by bending a leading end portion of a bending margin extending from the edge of the circuit board in a thickness direction in the thickness direction. The terminal support member is characterized in that it is disposed on a surface on the bus bar terminal side in the bending margin.

請求項７の発明は、請求項５に記載のものにおいて、前記バスバー基板は、前記回路基板の端縁から面一状に延出して形成された、バスバー同士を連結する連結片を切除するための連結片切断部を備えており、前記端子支持部材が前記連結片切断部の上面に配置されているところに特徴を有する。   According to a seventh aspect of the present invention, in the method according to the fifth aspect, the bus bar board is formed by extending from the edge of the circuit board so as to be flush with the connecting piece for connecting the bus bars. The connecting piece cutting portion is provided, and the terminal support member is disposed on the upper surface of the connecting piece cutting portion.

請求項８の発明は、請求項５から請求項７のいずれかに記載のものにおいて、前記端子支持部材は、前記バスバー端子における前記嵌合方向の後面側に沿うように配置されているところに特徴を有する。   Invention of Claim 8 is the thing in any one of Claim 5-7. WHEREIN: The said terminal support member is arrange | positioned along the rear surface side of the said fitting direction in the said bus-bar terminal. Has characteristics.

請求項９の発明は、請求項８に記載のものにおいて、前記バスバー端子は、前記コネクタ部の後側の壁面と前記端子支持部材との間に挟持されるところに特徴を有する。   A ninth aspect of the present invention is characterized in that, in the eighth aspect, the bus bar terminal is sandwiched between the rear wall surface of the connector portion and the terminal support member.

＜請求項１の発明＞
コネクタ部とは別に、コネクタ端子の嵌合方向への変位を規制する端子支持部材を設けたため、コネクタ端子の保持力が向上される。これにより、相手コネクタの嵌合・離脱が繰り返されたような場合に、コネクタ端子の変形や、半田クラックの発生等を防止することができる。 <Invention of Claim 1>
Apart from the connector portion, since the terminal support member that restricts the displacement of the connector terminal in the fitting direction is provided, the holding force of the connector terminal is improved. Thereby, when the mating / removal of the mating connector is repeated, deformation of the connector terminal, occurrence of solder cracks, and the like can be prevented.

＜請求項２の発明＞
コネクタ端子が端子支持部材に圧入係止されているため、強固に保持される。 <Invention of Claim 2>
Since the connector terminal is press-fitted and locked to the terminal support member, it is firmly held.

＜請求項３の発明＞
コネクタ端子が回路基板の表面側において導電路に接続されているため、コネクタ端子が回路構成体の裏面側に突出することがなくなり、従ってバスバー基板がコネクタ端子を迂回するような形状を取らなくて良いので、回路構成体の高密度化を図ることができる。 <Invention of Claim 3>
Since the connector terminal is connected to the conductive path on the front side of the circuit board, the connector terminal does not protrude to the back side of the circuit structure, and therefore the bus bar board does not take a shape that bypasses the connector terminal. Since it is good, it is possible to increase the density of the circuit structure.

＜請求項４の発明＞
コネクタ端子がスルーホールを通してバスバー基板の表面側に接続されているため、コネクタ端子が回路構成体の裏面側に突出することがなくなり、従ってバスバー基板がコネクタ端子を迂回するような形状を取らなくて良いので、回路構成体の高密度化を図ることができる。 <Invention of Claim 4>
Since the connector terminal is connected to the front side of the bus bar board through the through hole, the connector terminal does not protrude to the back side of the circuit structure, and therefore the bus bar board does not take a shape that bypasses the connector terminal. Since it is good, it is possible to increase the density of the circuit structure.

＜請求項５の発明＞
コネクタ部に収容される端子として、コネクタ端子とバスバー基板に設けたバスバー端子とを利用するため、端子をいずれか一方のみで構成する場合に比べて、高密度に配置することができる。 <Invention of Claim 5>
Since the connector terminal and the bus bar terminal provided on the bus bar substrate are used as the terminals accommodated in the connector portion, the terminals can be arranged at a higher density than when only one of the terminals is configured.

＜請求項６の発明＞
端子支持部材を曲げ代の上面に配置するため、スペース効率が良くなり、これにより小型化を図ることができる。 <Invention of Claim 6>
Since the terminal support member is arranged on the upper surface of the bending allowance, the space efficiency is improved, and the size can be reduced.

＜請求項７の発明＞
バスバー同士を連結する連結片を切除するための連結片切断部の上面に端子支持部材を配置するため、スペース効率が良くなり、これにより小型化を図ることができる。 <Invention of Claim 7>
Since the terminal support member is disposed on the upper surface of the connecting piece cutting portion for cutting out the connecting pieces that connect the bus bars, space efficiency is improved, thereby enabling miniaturization.

＜請求項８の発明＞
端子支持部材が、バスバー端子の後面側に沿うように配置されているため、相手コネクタとの嵌合時にバスバー端子の後方への変形を防止することができる。また、端子支持部材がコネクタ端子の支持とバスバー端子の支持とを兼ねているため、部品点数の増加を抑えることができる。 <Invention of Claim 8>
Since the terminal support member is disposed along the rear side of the bus bar terminal, it is possible to prevent the bus bar terminal from being deformed rearward when mated with the mating connector. Moreover, since the terminal support member serves both as the support for the connector terminal and the support for the bus bar terminal, an increase in the number of parts can be suppressed.

＜請求項９の発明＞
バスバー端子がコネクタ部の後側の壁面と端子支持部材との間に挟持されるため、バスバー端子が前後に移動することを防止することができる。 <Invention of Claim 9>
Since the bus bar terminal is sandwiched between the rear wall surface of the connector portion and the terminal support member, the bus bar terminal can be prevented from moving back and forth.

以下、本発明の一実施形態を図１ないし図７によって説明する。
本実施形態の電気接続箱は、図１ないし図３に示すように、回路構成体１０と、この回路構成体１０を収容すべくフレーム３１と放熱板４０からなるケース３０と、カバー４５とから構成されており、さらにコネクタ部６０及び端子台５０（端子支持部材に相当）と、ヒューズボックス４６とが装着されるようになっている。
以下各構成部材において、図２の左側を前方、右側を後方として説明する。 Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
As shown in FIGS. 1 to 3, the electrical junction box according to the present embodiment includes a circuit structure 10, a case 30 including a frame 31 and a heat radiating plate 40 to accommodate the circuit structure 10, and a cover 45. Further, the connector 60, the terminal block 50 (corresponding to a terminal support member), and the fuse box 46 are mounted.
Hereinafter, in each component, the left side in FIG. 2 will be described as the front and the right side as the rear.

個々の構造は以下のようである。回路構成体１０は、プリント回路基板１１（以下、単に回路基板１１という）と、回路基板１１の裏面側に配されるバスバー基板２０とから構成され、回路基板１１の表面側にリレーや半導体スイッチング素子等の電気部品１３が実装されるようになっている。
回路基板１１は、略長方形状に形成されており、その表裏両面には所定のパターンで導電路（詳細には図示せず）が形成されている。また、後部側の領域には、電気部品１３を装着するための開口部１４が形成されているとともに、前部側には、図７に示すように、コネクタ端子５５と接続される接点１５（導電路の一部）や、スルーホール１６が形成されている。 The individual structures are as follows: The circuit structure 10 includes a printed circuit board 11 (hereinafter simply referred to as a circuit board 11) and a bus bar board 20 disposed on the back side of the circuit board 11, and a relay or semiconductor switching is provided on the front side of the circuit board 11. An electrical component 13 such as an element is mounted.
The circuit board 11 is formed in a substantially rectangular shape, and conductive paths (not shown in detail) are formed in a predetermined pattern on both front and back surfaces. Further, an opening 14 for mounting the electrical component 13 is formed in the region on the rear side, and the contact 15 (connected to the connector terminal 55 as shown in FIG. A part of the conductive path) and a through hole 16 are formed.

バスバー基板２０は、導電性に優れた金属板を打ち抜いて形成され、互いに電気的に分離された複数本のバスバーにより所定の導電路を構成している。バスバー基板２０は、回路基板１１とほぼ整合した外形形状をなす本体部２１を備えており、この本体部２１が回路基板１１の裏面に絶縁性を有する薄い粘着シート（図示せず）を介して一体的に貼り付けられている。この本体部２１の後側には、回路基板１１の後縁から本体部２１と面一状に延出された曲げ代２２が設けられている。曲げ代２２の後端部には、表面側（上方）に直角曲げされた後、後方に直角曲げされた複数のヒューズ接続端子２３と、このヒューズ接続端子２３と同様に二度直角曲げされた後、先端がさらに二度直角曲げされることで、前方に延出した接続端子２４とが形成されている。ヒューズ接続端子２３の先端にはスリット２３Ａが形成されて、図示しないヒューズが挿入可能となっている。   The bus bar substrate 20 is formed by punching a metal plate having excellent conductivity, and a plurality of bus bars electrically separated from each other constitute a predetermined conductive path. The bus bar substrate 20 includes a main body portion 21 having an outer shape substantially aligned with the circuit board 11, and the main body portion 21 is interposed on a back surface of the circuit board 11 with a thin adhesive sheet (not shown) having insulating properties. It is pasted together. A bending allowance 22 extending from the rear edge of the circuit board 11 so as to be flush with the main body 21 is provided on the rear side of the main body 21. At the rear end of the bending allowance 22, a plurality of fuse connection terminals 23 bent at a right angle to the surface side (upward) and then bent at a right angle to the rear side were bent twice at a right angle in the same manner as the fuse connection terminals 23. Thereafter, the tip is further bent at a right angle twice to form a connection terminal 24 extending forward. A slit 23A is formed at the tip of the fuse connection terminal 23 so that a fuse (not shown) can be inserted.

また本体部２１の前側には、回路基板１１の前縁から本体部２１と面一状に延出された曲げ代２６が設けられている。曲げ代２６の前端部には、表面側（上方）に直角曲げされた起立部２７Ａと、その先端から前方に直角曲げされた端子部２７Ｂとからなる複数のバスバー端子２７が形成されている。各バスバー端子２７の端子部２７Ｂは同じ高さ位置に横幅方向に一列に並んで配置されている。なお、曲げ代２２，２６は、後述するようにバスバー同士を連結する連結片２８が配される連結片切断部に相当する。   Further, a bending allowance 26 extending from the front edge of the circuit board 11 so as to be flush with the main body 21 is provided on the front side of the main body 21. A plurality of bus bar terminals 27 are formed at the front end portion of the bending margin 26. The bus bar terminals 27 are each composed of an upright portion 27A that is bent at a right angle toward the surface side (upward) and a terminal portion 27B that is bent at a right angle forward from the tip. The terminal portions 27B of the bus bar terminals 27 are arranged in a line in the horizontal width direction at the same height position. In addition, the bending allowances 22 and 26 are corresponded to the connection piece cutting part by which the connection piece 28 which connects bus bars is arrange | positioned so that it may mention later.

ケース３０は全体としては、回路構成体１０を収容するべく浅皿状に形成されており、フレーム３１の底面側に、放熱板４０が張られた構造である。
フレーム３１は合成樹脂製であって、上記した回路構成体１０を内側に収めることができる長方形の枠状に形成されている。フレーム３１の左右両側辺における前端付近には、コネクタ部６０をねじ止めするためのねじ止め部３２が形成されている。また、フレーム３１の下面における内縁側には、放熱板４０を嵌め込み可能な段差状の取付凹部３３が全周にわたって形成されている。 The case 30 as a whole is formed in a shallow dish shape to accommodate the circuit structure 10, and has a structure in which a heat radiating plate 40 is stretched on the bottom surface side of the frame 31.
The frame 31 is made of a synthetic resin, and is formed in a rectangular frame shape that can accommodate the circuit structure 10 described above. A screwing portion 32 for screwing the connector portion 60 is formed in the vicinity of the front end on both the left and right sides of the frame 31. Further, on the inner edge side of the lower surface of the frame 31, a step-shaped mounting recess 33 into which the heat radiating plate 40 can be fitted is formed over the entire circumference.

放熱板４０は、電気部品１３から発生する熱を放熱するためのものであって、熱伝導率の高いアルミニウム等の金属板により、フレーム３１の外形とほぼ同じ長方形の平板状に形成されている。放熱板４０の上面には、回路構成体１０のバスバー基板２０が、接着性を有する絶縁シート４１によって貼着されるようになっている。また、放熱板４０の周縁部は、フレーム３１の取付凹部３３に嵌め込まれ、接着剤によって接着される。   The heat radiating plate 40 is for radiating heat generated from the electrical component 13 and is formed of a metal plate such as aluminum having a high thermal conductivity in a rectangular flat plate shape that is substantially the same as the outer shape of the frame 31. . On the upper surface of the heat radiating plate 40, the bus bar substrate 20 of the circuit structure 10 is adhered by an insulating sheet 41 having adhesiveness. Moreover, the peripheral part of the heat sink 40 is engage | inserted by the attachment recessed part 33 of the flame | frame 31, and it adhere | attaches with an adhesive agent.

カバー４５は、合成樹脂製であって、詳細には示さないが、概ねケース３０の上面開口を覆うように装着される。ヒューズボックス４６は、合成樹脂製であって、同じく詳細には示さないが、フレーム３１の後部に装着され、その後面にヒューズを装着可能なヒューズ装着部が設けられている。   The cover 45 is made of synthetic resin, and is not shown in detail, but is mounted so as to substantially cover the upper surface opening of the case 30. The fuse box 46 is made of synthetic resin and is not shown in detail, but is attached to the rear portion of the frame 31 and is provided with a fuse attachment portion on the rear surface where a fuse can be attached.

端子台５０は、合成樹脂製であって、略長方形の平板状をなしている。端子台５０の下端部両側端には、左右方向と下方向に張り出した支持部５１が形成されている。端子台５０は、放熱板４０の下面側から上面側へ挿通された一対のねじ５２が各支持部５１にねじ止めされることにより、バスバー基板２０の曲げ代２６を左右に跨ぐようにして、曲げ代２６の上面に直立した姿勢で装着される。図２に示すように、端子台５０は、その前面が前述したバスバー端子２７の起立部２７Ａの後面に沿うように配置される。また、端子台５０の上部には、前後に貫通した複数個の端子圧入孔５３が左右方向に一列に並んで設けられ、それぞれにコネクタ端子５５が後面側から挿通されている。   The terminal block 50 is made of synthetic resin and has a substantially rectangular flat plate shape. Support portions 51 are formed on both side ends of the lower end portion of the terminal block 50 so as to project in the left-right direction and the downward direction. The terminal block 50 is configured such that a pair of screws 52 inserted from the lower surface side to the upper surface side of the heat radiating plate 40 are screwed to the respective support portions 51 so as to straddle the bending margin 26 of the bus bar substrate 20 from side to side. It is mounted in an upright posture on the upper surface of the bending margin 26. As shown in FIG. 2, the terminal block 50 is arranged so that the front surface thereof is along the rear surface of the raised portion 27 </ b> A of the bus bar terminal 27 described above. In addition, a plurality of terminal press-fitting holes 53 penetrating in the front-rear direction are provided in a line in the left-right direction at the upper part of the terminal block 50, and the connector terminals 55 are inserted into the respective terminals from the rear side.

コネクタ端子５５は、導電性に優れた金属板を打ち抜いて形成され、端子圧入孔５３から前方に突出する端子部５５Ａと、端子圧入孔５３から後方に延出される延出部５５Ｂとを備えている。なお、端子部５５Ａと延出部５５Ｂとの中間には、詳細には示さないが、横幅方向に突出した圧入突起が設けられており、コネクタ端子５５を端子部５５Ａから端子圧入孔５３に挿入するとともに、圧入突起を端子圧入孔５３の内壁に食い込ませることにより、コネクタ端子５５が端子台５０に圧入係止されている。   The connector terminal 55 is formed by punching a metal plate excellent in conductivity, and includes a terminal portion 55A that protrudes forward from the terminal press-fit hole 53 and an extension portion 55B that extends rearward from the terminal press-fit hole 53. Yes. In addition, although not shown in detail in the middle between the terminal portion 55A and the extension portion 55B, a press-fitting protrusion protruding in the width direction is provided, and the connector terminal 55 is inserted into the terminal press-fitting hole 53 from the terminal portion 55A. At the same time, the connector terminal 55 is press-fitted and locked to the terminal block 50 by causing the press-fitting protrusion to bite into the inner wall of the terminal press-fitting hole 53.

各コネクタ端子５５の端子部５５Ａは、図４等にも示すように、バスバー端子２７の端子部２７Ｂの上側に並んで配置されている。またコネクタ端子５５の延出部５５Ｂは、端子圧入孔５３のすぐ後側の位置から、斜め下後方に向けて曲げられており、その先端には斜め上向きに反り返った形状の接続部５５Ｃが形成されている。コネクタ端子５５のうちの一部は、図７（Ａ）に示すように、接続部５５Ｃが回路基板１１の上面（表面）に形成された接点１５（導電路）に半田１７により電気的に接続されている。また、他のコネクタ端子５５は、図７（Ｂ）に示すように、接続部５５Ｃが回路基板１１のスルーホール１６を通してバスバー基板２０の上面（表面）に半田１７により電気的に接続されている。   The terminal portion 55A of each connector terminal 55 is arranged side by side above the terminal portion 27B of the bus bar terminal 27 as shown in FIG. The extending portion 55B of the connector terminal 55 is bent obliquely downward and rearward from the position immediately behind the terminal press-fitting hole 53, and a connecting portion 55C having a shape that warps obliquely upward is formed at the tip. Has been. 7A, a part of the connector terminal 55 is electrically connected to the contact 15 (conductive path) formed on the upper surface (front surface) of the circuit board 11 by the solder 17, as shown in FIG. Has been. In addition, as shown in FIG. 7B, the other connector terminal 55 is electrically connected to the upper surface (front surface) of the bus bar substrate 20 by the solder 17 through the through hole 16 of the circuit board 11. .

コネクタ部６０は、合成樹脂製であって、図４に示すように、前方に開放した略角筒状の嵌合部６１を左右一対備えており、各嵌合部６１はそれぞれ図示しない相手コネクタを嵌合可能とされている。コネクタ部６０の左右両側面には、下端から取付部６２が側方に延出しており、各取付部６２がねじ６３によりフレーム３１のねじ止め部３２にねじ止めされることで、コネクタ部６０がケース３０の前端部に装着される。また、コネクタ部６０の奥壁６０Ａ（嵌合方向の後側の壁面）には、バスバー端子２７の端子部２７Ｂ及びコネクタ端子５５の端子部５５Ａを挿通可能な端子挿通孔６４が前後に貫通して設けられている。この端子挿通孔６４の内径は、各端子部２７Ｂ，５５Ａの外形より僅かに大きくされている。バスバー端子２７及びコネクタ端子５５の端子部２７Ｂ，５５Ａは、端子挿通孔６４を通して嵌合部６１内に前後方向（相手コネクタの嵌合方向）に沿って突出しており、嵌合部６１に嵌合される相手コネクタが有する雌端子と嵌合接続可能となっている。なお、コネクタ部６０は、図２に示すように、奥壁６０Ａと端子台５０との間に、各バスバー端子２７の起立部２７Ａを挟持するように配置されている。   The connector part 60 is made of synthetic resin, and as shown in FIG. 4, includes a pair of left and right fitting parts 61 having a substantially rectangular tube shape opened forward, and each fitting part 61 is a mating connector (not shown). Can be fitted. On both the left and right side surfaces of the connector part 60, attachment parts 62 extend laterally from the lower end, and each attachment part 62 is screwed to the screwing part 32 of the frame 31 with a screw 63, whereby the connector part 60. Is attached to the front end of the case 30. Further, a terminal insertion hole 64 through which the terminal portion 27B of the bus bar terminal 27 and the terminal portion 55A of the connector terminal 55 can be inserted penetrates in the back wall 60A (the rear wall surface in the fitting direction) of the connector portion 60. Is provided. The inner diameter of the terminal insertion hole 64 is slightly larger than the outer shape of the terminal portions 27B and 55A. The terminal portions 27B and 55A of the bus bar terminal 27 and the connector terminal 55 protrude along the front-rear direction (the mating direction of the mating connector) into the fitting portion 61 through the terminal insertion hole 64, and fit into the fitting portion 61. The mating connector can be fitted and connected to a female terminal. As shown in FIG. 2, the connector part 60 is arranged so as to sandwich the standing part 27 </ b> A of each bus bar terminal 27 between the back wall 60 </ b> A and the terminal block 50.

続いて、電気接続箱の製造工程の一例を説明する。
まず、金属板素材をプレス加工することによって、バスバー基板２０が所定の形状で切り出される。なお、この状態では、各バスバー端子２７及びヒューズ接続端子２３、接続端子２４の曲げ加工はなされておらず、曲げ代２２，２６には隣り合うバスバー間に連結片２８（図１中の部分拡大図及び図６参照）が架設され、また、バスバー基板２０の周囲に外枠（図示せず）が設けられることで、バスバー同士が分離しないように連結されている。 Then, an example of the manufacturing process of an electrical junction box is demonstrated.
First, the bus bar substrate 20 is cut out in a predetermined shape by pressing a metal plate material. In this state, the bus bar terminals 27, the fuse connection terminals 23, and the connection terminals 24 are not bent, and the bending margins 22 and 26 include connecting pieces 28 (partially enlarged in FIG. 1) between adjacent bus bars. 6) and an outer frame (not shown) is provided around the bus bar substrate 20, so that the bus bars are connected so as not to be separated from each other.

次に、バスバー基板２０の本体部２１の上面に、絶縁性の粘着シートを介して回路基板１１が一体的に貼着される。ここで、回路基板１１の接点１５や、開口部１４及びスルーホール１６の内側におけるバスバー基板２０の表面（上面）等にスクリーン印刷等により半田が塗布される。   Next, the circuit board 11 is integrally attached to the upper surface of the main body portion 21 of the bus bar substrate 20 via an insulating adhesive sheet. Here, solder is applied to the contact 15 of the circuit board 11, the surface (upper surface) of the bus bar board 20 inside the opening 14 and the through hole 16, etc. by screen printing or the like.

続いて、プレス加工により、各バスバー端子２７の端子部２７Ｂ、ヒューズ接続端子２３の先端部及び接続端子２４の先端部が下方へ直角に曲げられる。なお、接続端子２４の先端部については３度直角曲げされる。そして、曲げ代２２，２６の上面に治具（図示せず）を宛てつつ、各バスバー端子２７、ヒューズ接続端子２３及び接続端子２４が上方へ直角に曲げ起こされる。これと同時に、連結片２８と外枠とが切除され、各バスバー同士が電気的に分離される。   Subsequently, the terminal portion 27B of each bus bar terminal 27, the distal end portion of the fuse connection terminal 23, and the distal end portion of the connection terminal 24 are bent downward at a right angle by pressing. Note that the tip of the connection terminal 24 is bent at a right angle by 3 degrees. The bus bar terminals 27, the fuse connection terminals 23, and the connection terminals 24 are bent upward at a right angle while a jig (not shown) is applied to the upper surfaces of the bending margins 22 and 26. At the same time, the connecting piece 28 and the outer frame are cut off, and the bus bars are electrically separated from each other.

次に、放熱板４０の上面に接着性を有する絶縁シート４１が貼着され、その上に、回路構成体１０におけるバスバー基板２０の本体部２１及び曲げ代２２，２６の下面が押し付けられて貼着される（図１参照）。
一方、端子台５０の各端子圧入孔５３に後方から金属板素材から切り出されたコネクタ端子５５が圧入係止され、各コネクタ端子５５の延出部５５Ｂが斜め下向きに曲げられる。 Next, an insulating sheet 41 having adhesiveness is attached to the upper surface of the heat radiating plate 40, and the lower surface of the main body portion 21 of the bus bar substrate 20 and the bending margins 22, 26 in the circuit component 10 is pressed and pasted thereon. Worn (see FIG. 1).
On the other hand, the connector terminals 55 cut out from the metal plate material from the rear are press-fitted into the terminal press-fitting holes 53 of the terminal block 50, and the extending portions 55B of the connector terminals 55 are bent obliquely downward.

続いて、図５及び図６に示すように、電気部品１３の搭載領域の半田上に電気部品１３のリード線１３Ａが載せられるとともに、端子台５０が放熱板４０に取り付けられて、各コネクタ端子５５の接続部５５Ｃが対応する半田上に載せられる。その後、高温炉に通して半田を溶解させることで、電気部品１３のリード線１３Ａが回路基板１１上の導電路ややバスバー基板２０の表面に電気的に接続される。また、コネクタ端子５５の接続部５５Ｃが、図７（Ａ）（Ｂ）に示すように、回路基板１１上の接点１５若しくはバスバー基板２０の表面（上面）に半田付けされ、電気的に接続される。   Subsequently, as shown in FIGS. 5 and 6, the lead wire 13 </ b> A of the electrical component 13 is placed on the solder in the mounting area of the electrical component 13, and the terminal block 50 is attached to the heat radiating plate 40. 55 connecting portions 55C are placed on the corresponding solder. Thereafter, the lead wire 13A of the electrical component 13 is electrically connected to the conductive path on the circuit board 11 and the surface of the bus bar board 20 by passing the solder through a high temperature furnace. Further, as shown in FIGS. 7A and 7B, the connecting portion 55C of the connector terminal 55 is soldered and electrically connected to the contact 15 on the circuit board 11 or the surface (upper surface) of the bus bar board 20. The

次に、放熱板４０の周縁部に接着剤が全周にわたって塗布され、その周縁部がフレーム３１の取付凹部３３に嵌め込まれることで、フレーム３１の下面に接着される。
続いて、端子台５０に対して前方からコネクタ部６０を接近させ、各バスバー端子２７及びコネクタ端子５５の端子部２７Ｂ，５５Ａを端子挿通孔６４に挿通させる。そして、図２に示すように、コネクタ部６０の奥壁６０Ａがバスバー端子２７の起立部２７Ａの前面に突き当たったところで、コネクタ部６０がフレーム３１のねじ止め部３２に固定される。
その後、フレーム３１にカバー４５及びヒューズボックス４６が装着されて、電気接続箱が完成される。 Next, an adhesive is applied to the peripheral edge of the heat radiating plate 40 over the entire periphery, and the peripheral edge is fitted into the mounting recess 33 of the frame 31 to be bonded to the lower surface of the frame 31.
Subsequently, the connector portion 60 is approached from the front with respect to the terminal block 50, and the bus bar terminals 27 and the terminal portions 27 </ b> B and 55 </ b> A of the connector terminal 55 are inserted into the terminal insertion holes 64. As shown in FIG. 2, the connector portion 60 is fixed to the screwing portion 32 of the frame 31 when the inner wall 60 </ b> A of the connector portion 60 abuts against the front surface of the standing portion 27 </ b> A of the bus bar terminal 27.
Thereafter, the cover 45 and the fuse box 46 are attached to the frame 31 to complete the electrical connection box.

以上説明したように本実施形態の電気接続箱によれば、コネクタ部６０とは別に、コネクタ端子５５の嵌合方向への変位を規制する端子台５０を設けたため、コネクタ端子５５の保持力が向上される。これにより、相手コネクタの嵌合・離脱が繰り返されたような場合に、コネクタ端子５５の変形や、半田クラックの発生等を防止することができる。加えて、コネクタ部６０をコネクタ端子５５とバスバー端子２７の両方に対して組み付ける際に、コネクタ端子５５を端子台５０によりしっかりと保持させておくことができるため、組み付け作業を円滑に行うことができる。   As described above, according to the electrical junction box of the present embodiment, the terminal block 50 that restricts the displacement of the connector terminal 55 in the fitting direction is provided separately from the connector portion 60, so that the holding force of the connector terminal 55 is increased. Be improved. Thereby, when the mating / removal of the mating connector is repeated, it is possible to prevent the deformation of the connector terminal 55 and the occurrence of solder cracks. In addition, when the connector portion 60 is assembled to both the connector terminal 55 and the bus bar terminal 27, the connector terminal 55 can be firmly held by the terminal block 50, so that the assembling work can be performed smoothly. it can.

コネクタ端子５５が端子台５０に圧入係止されているため、強固に保持される。   Since the connector terminal 55 is press-fitted and locked to the terminal block 50, it is firmly held.

コネクタ端子５５が、回路基板１１の表面側において接点１５（導電路）に接続されるか、若しくはスルーホール１６を通してバスバー基板２０の表面側に接続されている。このため、コネクタ端子５５が回路構成体１０の裏面側に突出することがなくなり、従ってバスバー基板２０がコネクタ端子を迂回する形状を取らなくて良いので、回路構成体１０の高密度化を図ることができる。また、回路構成体１０の裏面側に放熱板４０等の部材を配置する場合に、従来では、その部材をコネクタ端子との干渉を避けるように例えば下方へ凹み形状等にする必要があったが、本構成では、回路構成体１０の裏面にコネクタ端子５５が突出しないので、放熱板４０等の部材を凹み形状等にせずに済み、製造コストの低減や、省スペース化を図ることができる。   The connector terminal 55 is connected to the contact 15 (conductive path) on the front surface side of the circuit board 11 or connected to the front surface side of the bus bar substrate 20 through the through hole 16. For this reason, the connector terminal 55 does not protrude to the back surface side of the circuit structure 10, and therefore the bus bar substrate 20 does not have to take a shape that bypasses the connector terminal. Can do. In addition, when a member such as the heat sink 40 is disposed on the back side of the circuit structure 10, conventionally, the member has to be recessed downward, for example, so as to avoid interference with the connector terminal. In this configuration, since the connector terminal 55 does not protrude on the back surface of the circuit structure 10, it is not necessary to form a member such as the heat sink 40 in a concave shape, and the manufacturing cost can be reduced and the space can be saved.

コネクタ部６０に収容される端子として、コネクタ端子５５とバスバー基板２０に設けたバスバー端子２７とを利用するため、端子をいずれか一方のみで構成する場合に比べて、高密度に配置することができる。加えて、コネクタ部６０をコネクタ端子５５とバスバー端子２７の両方に対して組み付ける際に、コネクタ端子５５を端子台５０によりしっかりと保持させておくことができるため、組み付け作業を円滑に行うことができる。   Since the connector terminal 55 and the bus bar terminal 27 provided on the bus bar substrate 20 are used as the terminals accommodated in the connector unit 60, the terminals can be arranged at a higher density than in the case where the terminals are configured by only one of them. it can. In addition, when the connector portion 60 is assembled to both the connector terminal 55 and the bus bar terminal 27, the connector terminal 55 can be firmly held by the terminal block 50, so that the assembling work can be performed smoothly. it can.

端子台５０を曲げ代２６の上面に配置するため、スペース効率が良くなり、これにより小型化を図ることができる。
また、バスバー同士を連結する連結片２８を切除するための連結片切断部（曲げ代２６）の上面に端子台５０を配置するため、スペース効率が良くなり、これにより小型化を図ることができる。 Since the terminal block 50 is disposed on the upper surface of the bending allowance 26, space efficiency is improved, and thereby miniaturization can be achieved.
In addition, since the terminal block 50 is disposed on the upper surface of the connecting piece cutting portion (bending allowance 26) for cutting out the connecting piece 28 that connects the bus bars, space efficiency is improved, and thus the size can be reduced. .

端子台５０が、バスバー端子２７の後面側に沿うように配置されているため、相手コネクタとの嵌合時にバスバー端子２７の後方への変形を防止することができる。また、端子台５０がコネクタ端子５５の支持とバスバー端子２７の支持とを兼ねているため、部品点数の増加を抑えることができる。   Since the terminal block 50 is disposed along the rear surface side of the bus bar terminal 27, it is possible to prevent the bus bar terminal 27 from being deformed rearward when fitted to the mating connector. Moreover, since the terminal block 50 serves as both support of the connector terminal 55 and support of the bus bar terminal 27, an increase in the number of parts can be suppressed.

さらに、バスバー端子２７がコネクタ部６０の奥壁６０Ａと端子台５０に挟持されるため、バスバー端子２７が前後に移動することを防止することができる。   Furthermore, since the bus bar terminal 27 is sandwiched between the inner wall 60A of the connector portion 60 and the terminal block 50, the bus bar terminal 27 can be prevented from moving back and forth.

＜他の実施形態＞
本発明は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本発明の技術的範囲に含まれ、さらに、下記以外にも要旨を逸脱しない範囲内で種々変更して実施することができる。
（１）端子支持部材は、コネクタ端子の後面または前面を支持する構造であってもよく、そのようなものも本発明の技術的範囲に含まれる。
（２）端子支持部材は、コネクタ端子を圧入係止以外の方法で支持するようにしても良い。例えばインサート成形によりコネクタ端子を一体化するようにしても良い。
（３）上記実施形態に例示した製造工程はあくまでも一例であって、適宜に変更可能である。 <Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
(1) The terminal support member may have a structure that supports the rear surface or the front surface of the connector terminal, and such a member is also included in the technical scope of the present invention.
(2) The terminal support member may support the connector terminal by a method other than press fitting. For example, the connector terminals may be integrated by insert molding.
(3) The manufacturing process illustrated in the above embodiment is merely an example, and can be changed as appropriate.

本発明の一実施形態に係る電気接続箱の分解斜視図1 is an exploded perspective view of an electrical junction box according to an embodiment of the present invention. 電気接続箱の側断面図Side view of electrical junction box 電気接続箱の斜視図Perspective view of electrical junction box 電気接続箱の正面図Front view of electrical junction box 回路構成体に放熱板と端子台とを組み付けた状態を示す後方からの斜視図A rear perspective view showing a state where the heat sink and the terminal block are assembled to the circuit structure. 回路構成体に放熱板と端子台とを組み付けた状態を示す前方からの斜視図A perspective view from the front showing a state where the heat sink and the terminal block are assembled to the circuit structure. （Ａ）コネクタ端子が回路基板表面の導電路に接続された状態を示す部分拡大断面図 （Ｂ）コネクタ端子がバスバー基板の表面に接続された状態を示す部分拡大断面図(A) Partial enlarged sectional view showing the state where the connector terminal is connected to the conductive path on the surface of the circuit board (B) Partial enlarged sectional view showing the state where the connector terminal is connected to the surface of the bus bar board

符号の説明Explanation of symbols

１０…回路構成体
１１…回路基板
１５…接点（導電路）
１６…スルーホール
２０…バスバー基板
２６…曲げ代
２７…バスバー端子
２８…連結片
５０…端子台（端子支持部材）
５５…コネクタ端子
６０…コネクタ部
６０…奥壁（嵌合方向の後側の壁面） DESCRIPTION OF SYMBOLS 10 ... Circuit structure 11 ... Circuit board 15 ... Contact (conductive path)
16 ... through hole 20 ... bus bar substrate 26 ... bending allowance 27 ... bus bar terminal 28 ... connecting piece 50 ... terminal block (terminal support member)
55 ... Connector terminal 60 ... Connector portion 60 ... Back wall (wall on the rear side in the mating direction)

Claims (9)

導電路が形成された回路基板の裏面に前記導電路に電気的に接続されるバスバー基板が取り付けられてなる回路構成体と、
相手コネクタと嵌合可能なコネクタ部と、
前記導電路と電気的に接続され、かつ前記コネクタ部における嵌合方向の後側の壁面を貫通して前記コネクタ部内に突出するコネクタ端子と、
前記コネクタ部と別体に形成されるとともに、コネクタ部の前記嵌合方向の後側に配置され、前記コネクタ端子の前記嵌合方向への変位を規制する端子支持部材と、
を備えたことを特徴とする電気接続箱。 A circuit structure in which a bus bar substrate electrically connected to the conductive path is attached to the back surface of the circuit board on which the conductive path is formed;
A connector that can be mated with a mating connector;
A connector terminal electrically connected to the conductive path and projecting into the connector portion through a rear wall surface in the fitting direction of the connector portion;
A terminal support member that is formed separately from the connector part, is disposed on the rear side of the connector part in the fitting direction, and restricts displacement of the connector terminal in the fitting direction;
An electrical junction box comprising: 前記コネクタ端子は、前記端子支持部材に対して圧入係止されていることを特徴とすることを特徴とする請求項１に記載の電気接続箱。 The electrical connection box according to claim 1, wherein the connector terminal is press-fitted and locked to the terminal support member. 前記コネクタ端子の一端部が前記回路基板の表面側において前記導電路に接続されていることを特徴とする請求項１または請求項２に記載の電気接続箱。 The electrical connection box according to claim 1, wherein one end of the connector terminal is connected to the conductive path on the surface side of the circuit board. 前記コネクタ端子の一端部は、前記回路基板に設けられたスルーホールを通して、前記バスバー基板の表面側に接続されていることを特徴とする請求項１または請求項２に記載の電気接続箱。 3. The electrical connection box according to claim 1, wherein one end portion of the connector terminal is connected to a surface side of the bus bar substrate through a through hole provided in the circuit board. 前記バスバー基板の一端部には、前記コネクタ部内に収容されるバスバー端子が形成されていることを特徴とする請求項１から請求項４のいずれかに記載の電気接続箱。 5. The electrical connection box according to claim 1, wherein a bus bar terminal accommodated in the connector portion is formed at one end portion of the bus bar substrate. 前記バスバー端子は、前記回路基板の端縁から面一状に延出した曲げ代の先端部を厚み方向に屈曲して形成されており、前記端子支持部材は前記曲げ代における前記バスバー端子側の面上に配置されていることを特徴とする請求項５に記載の電気接続箱。 The bus bar terminal is formed by bending a leading end portion of a bending margin extending in a thickness direction from an edge of the circuit board in a thickness direction, and the terminal support member is provided on the bus bar terminal side in the bending margin. The electrical junction box according to claim 5, wherein the electrical junction box is disposed on a surface. 前記バスバー基板は、前記回路基板の端縁から面一状に延出して形成された、バスバー同士を連結する連結片を切除するための連結片切断部を備えており、前記端子支持部材が前記連結片切断部の上面に配置されていることを特徴とする請求項５に記載の電気接続箱。 The bus bar substrate includes a connection piece cutting portion for extending a connection piece for connecting the bus bars formed to extend from the edge of the circuit board so as to be flush with each other, and the terminal support member includes the terminal support member. The electrical junction box according to claim 5, wherein the electrical junction box is disposed on an upper surface of the connecting piece cutting portion. 前記端子支持部材は、前記バスバー端子における前記嵌合方向の後面側に沿うように配置されていることを特徴とする請求項５から請求項７のいずれかに記載の電気接続箱。 The said terminal support member is arrange | positioned so that the rear surface side of the said fitting direction in the said bus-bar terminal may be followed, The electrical junction box in any one of Claims 5-7 characterized by the above-mentioned. 前記バスバー端子は、前記コネクタ部の後側の壁面と前記端子支持部材との間に挟持されることを特徴とする請求項８に記載の電気接続箱。 The electrical connection box according to claim 8, wherein the bus bar terminal is sandwiched between a wall surface on the rear side of the connector portion and the terminal support member.
JP2005147577A 2005-05-20 2005-05-20 Electrical junction box Expired - Fee Related JP4723907B2 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008154428A (en) * 2006-12-20 2008-07-03 Auto Network Gijutsu Kenkyusho:Kk Circuit constituent
JP2008283760A (en) * 2007-05-09 2008-11-20 Fujikura Ltd Electrical connection box
JP2009303405A (en) * 2008-06-13 2009-12-24 Autonetworks Technologies Ltd Circuit structure and electrical junction box
JP2013021744A (en) * 2011-07-07 2013-01-31 Yazaki Corp Pin header unit and electric connection box

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Publication number Priority date Publication date Assignee Title
JPH099456A (en) * 1995-06-16 1997-01-10 Yazaki Corp Electric junction box
JP2000083312A (en) * 1998-09-02 2000-03-21 Sumitomo Wiring Syst Ltd Electrical junction box and manufacture of the same
JP2000217227A (en) * 1999-01-22 2000-08-04 Furukawa Electric Co Ltd:The Electric connector box
JP2004040873A (en) * 2002-07-01 2004-02-05 Auto Network Gijutsu Kenkyusho:Kk Circuit configuration and circuit unit
JP2004153034A (en) * 2002-10-31 2004-05-27 Mitsubishi Electric Corp Case structure of onboard electronic equipment
JP2005080354A (en) * 2003-08-29 2005-03-24 Auto Network Gijutsu Kenkyusho:Kk Circuit configuration

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Publication number Priority date Publication date Assignee Title
JPH099456A (en) * 1995-06-16 1997-01-10 Yazaki Corp Electric junction box
JP2000083312A (en) * 1998-09-02 2000-03-21 Sumitomo Wiring Syst Ltd Electrical junction box and manufacture of the same
JP2000217227A (en) * 1999-01-22 2000-08-04 Furukawa Electric Co Ltd:The Electric connector box
JP2004040873A (en) * 2002-07-01 2004-02-05 Auto Network Gijutsu Kenkyusho:Kk Circuit configuration and circuit unit
JP2004153034A (en) * 2002-10-31 2004-05-27 Mitsubishi Electric Corp Case structure of onboard electronic equipment
JP2005080354A (en) * 2003-08-29 2005-03-24 Auto Network Gijutsu Kenkyusho:Kk Circuit configuration

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008154428A (en) * 2006-12-20 2008-07-03 Auto Network Gijutsu Kenkyusho:Kk Circuit constituent
JP2008283760A (en) * 2007-05-09 2008-11-20 Fujikura Ltd Electrical connection box
JP2009303405A (en) * 2008-06-13 2009-12-24 Autonetworks Technologies Ltd Circuit structure and electrical junction box
JP2013021744A (en) * 2011-07-07 2013-01-31 Yazaki Corp Pin header unit and electric connection box

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