JP4241520B2 - Electrical junction box - Google Patents

Electrical junction box Download PDF

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JP4241520B2
JP4241520B2 JP2004181230A JP2004181230A JP4241520B2 JP 4241520 B2 JP4241520 B2 JP 4241520B2 JP 2004181230 A JP2004181230 A JP 2004181230A JP 2004181230 A JP2004181230 A JP 2004181230A JP 4241520 B2 JP4241520 B2 JP 4241520B2
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pedestal
terminal
circuit board
connection
printed circuit
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達也 早川
幸功 北
純 岩崎
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Sumitomo Wiring Systems Ltd
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Description

本発明は、電気接続箱に関し、特に、電気接続箱内に収容するプリント基板への接続端子の取付構造を改良するものである。   The present invention relates to an electrical junction box, and in particular, to improve a structure for attaching a connection terminal to a printed circuit board accommodated in the electrical junction box.

自動車等に搭載される電気接続箱は、内部にプリント回路基板を収容し、該プリント回路基板の導体とコネクタ、ヒューズ等の各種電気部品を接続するときは、プリント基板の導体に接続端子を半田付けして立設し、その接続端子の他端を前記した相手方の電気部品の端子と接続している。しかしながら、特に端子数が多数の場合は、その端子を個別にプリント基板に取り付けるには手間がかかるうえ、ピッチが揃いにくいためアライメント作業が必要となり、組み付け性が悪いという問題があった。また、各端子の出し代がばらつきやすく、さらに、電気部品の挿抜によって接続端子の半田付け部に応力が加わりやすいことなどから、精度および品質安定性にも問題があった。   An electrical connection box mounted on an automobile or the like accommodates a printed circuit board therein, and when connecting the printed circuit board conductor and various electrical components such as connectors and fuses, solder the connection terminals to the printed circuit board conductor. The other end of the connection terminal is connected to the terminal of the other electrical component described above. However, especially when the number of terminals is large, it takes time to attach the terminals individually to the printed circuit board, and it is difficult to align the pitch, so that alignment work is required, and there is a problem that the assembling property is poor. In addition, there is a problem in accuracy and quality stability because the lead-out margin of each terminal tends to vary and stress is easily applied to the soldered portion of the connection terminal by inserting and removing electrical parts.

これらの問題に関し、例えば特開２００３−２１７４３７号（特許文献１）では、図５に示すように、回路基板１とヒューズ端子（図示せず）とを接続する構造として、複数の接続端子２を支持ブロック３のスリット３ａに圧入嵌合して固定し、この支持ブロック３から突設した位置決め部３ｂを、回路基板１に予め穿設された位置決め孔１ａに嵌めて位置決め固定したうえで、接続端子２を回路基板１に半田付けすることを提案している。前記接続端子２の圧入部２ａの前後には突起２ｂ、２ｃを設け、支持ブロック３のスリット３ａに圧入したときに該スリット３ａの内側周縁に突起２ｂが、外側周縁に突起２ｃが係止する構成としている。この提案によれば、予め支持ブロック３に端子２を固定して取り付けるため、端子数が多くても容易にピッチを揃えることができる。また、接続端子２の前記突起２ｂ、２ｃによって、端子２の出し代が揃ううえ、電子部品の挿抜に際しては、挿抜力を支持ブロック３が受け止めるため、接続端子２の半田付け部分には応力がかからず、接続不良の発生を防止できる。   Regarding these problems, for example, in Japanese Patent Laid-Open No. 2003-217437 (Patent Document 1), as shown in FIG. 5, a plurality of connection terminals 2 are provided as a structure for connecting a circuit board 1 and a fuse terminal (not shown). After fixing by press-fitting into the slit 3a of the support block 3, the positioning portion 3b protruding from the support block 3 is fitted into the positioning hole 1a previously drilled in the circuit board 1, and then fixed. It has been proposed to solder the terminal 2 to the circuit board 1. Protrusions 2b and 2c are provided before and after the press-fitting portion 2a of the connection terminal 2. When the press-fitting into the slit 3a of the support block 3, the protrusion 2b is engaged with the inner periphery of the slit 3a and the protrusion 2c is engaged with the outer periphery. It is configured. According to this proposal, since the terminals 2 are fixedly attached to the support block 3 in advance, the pitch can be easily adjusted even if the number of terminals is large. Further, the protrusions 2b and 2c of the connection terminal 2 provide the same allowance for the terminal 2, and the support block 3 receives the insertion / extraction force when inserting / removing the electronic component. Therefore, the occurrence of poor connection can be prevented.

しかしながら、複数個の接続端子２を二列に取り付ける場合は、各端子間のスペースが狭くなるため、前記支持ブロック３への圧入作業中に端子２を変形させやすく、やはりピッチの不揃いや接続不良の原因となる。また、接続端子２に設けた前記突起２ｂ、２ｃによって、該端子２の支持ブロック３への挿抜に相応の力を要し、作業性が悪い点にも問題がある。   However, when a plurality of connection terminals 2 are mounted in two rows, the space between the terminals becomes narrow, so that the terminals 2 are easily deformed during the press-fitting work into the support block 3, and the pitch is uneven and the connection is poor. Cause. Further, the protrusions 2b and 2c provided on the connection terminal 2 require a corresponding force for inserting and removing the terminal 2 from and into the support block 3, and there is a problem in that workability is poor.

特開２００１−１５９５１号（特許文献２）では、図６に示すように、接続端子６をインサートモールド等により部分的に予め埋設した絶縁体７で接続端子６を支持し、該絶縁体７をプリント基板５に載置して、プリント基板５とアッパーケース８のコネクタハウジング８ａの底面とによって該絶縁体７を上下から挟持して固定し、コネクタハウジング８ａ内に接続端子６を突出させると共に、該接続端子６の下端部をプリント基板５に半田付けすることが提案されている。この構造においても、複数の接続端子６のピッチと出し代を正確に揃えることができるうえ、コネクタの挿抜力が接続端子６の半田付け部分に伝わることを防止できる。しかしながら、前記絶縁体７はプリント基板５とアッパーケース８との間で挟持されているだけであり、プリント基板５に接着剤等で完全には固定されていないため、絶縁体７が振動等により位置ズレすると、接続端子６の半田付け部分に応力が加わって損傷する虞れがある。
特開２００３−２１７４３７号公報 特開２００１−１５９５１号公報 In Japanese Patent Laid-Open No. 2001-15951 (Patent Document 2), as shown in FIG. 6, the connection terminal 6 is supported by an insulator 7 in which the connection terminal 6 is partially embedded in advance by an insert mold or the like. Placed on the printed circuit board 5, the insulator 7 is sandwiched and fixed from above and below by the printed circuit board 5 and the bottom surface of the connector housing 8a of the upper case 8, and the connection terminal 6 protrudes into the connector housing 8a. It has been proposed to solder the lower end of the connection terminal 6 to the printed circuit board 5. Even in this structure, the pitch and the allowance of the plurality of connection terminals 6 can be accurately aligned, and the connector insertion / extraction force can be prevented from being transmitted to the soldered portions of the connection terminals 6. However, the insulator 7 is only sandwiched between the printed circuit board 5 and the upper case 8 and is not completely fixed to the printed circuit board 5 with an adhesive or the like. If the position is shifted, stress may be applied to the soldered portion of the connection terminal 6 to cause damage.
JP 2003-217437 A JP 2001-15951 A

本発明は前記問題に鑑みてなされたもので、プリント基板に複数の接続端子を２列に取り付ける電気接続箱において、この接続端子のピッチを揃え、組み付け性と作業性を向上させることを第一の課題とし、各接続端子の出し代を揃えること、および、電子部品の挿抜に際して接続端子とプリント基板との半田付け等のよる固定部分での損傷を防止することを第二の課題としている。   The present invention has been made in view of the above problems, and in an electrical connection box in which a plurality of connection terminals are attached to a printed circuit board in two rows, the pitch of the connection terminals is made uniform to improve assembly and workability. As a second problem, the second problem is to arrange the connecting margins of the respective connection terminals, and to prevent damage at the fixed portion due to soldering between the connection terminals and the printed circuit board when the electronic component is inserted and removed.

前記課題を解決するために、本発明は、ケース外面に形成されるコネクタ収容部に２列の端子孔を設け、各列に一定ピッチの端子孔を複数個並設している一方、該ケース内部に収容されるプリント基板の導体に、タブ状の接続端子の下端を半田づけで固定して立設し、その上側部を前記コネクタ収容部の端子孔に突出している電気接続箱であって、
前記各列の複数の接続端子を夫々貫通孔に挿通して並列支持した第一台座と第二台座とを分割して備え、
前記第一台座と第二台座とは、それぞれ端子の貫通孔を並設した本体部の長さ方向の両側部に連結部と被連結部とが突設され、該連結部は位置決め突起を設けている一方、前記被連結部に前記位置決め突起を貫通状態で嵌合保持する嵌合凹部が設けられており、
前記第一台座と第二台座とは着脱自在に結合した状態で前記プリント基板上に配置され、これら第一、第二台座の下面から突出する前記複数の接続端子の下端部が前記プリント基板の端子孔に挿入されて前記導体と接続されていることを特徴とする電気接続箱を提供している。 In order to solve the above-mentioned problem, the present invention provides two rows of terminal holes in a connector housing portion formed on the outer surface of the case, and a plurality of terminal holes having a constant pitch are arranged in parallel in each row. An electrical connection box in which the lower end of a tab-like connection terminal is fixed by soldering to a conductor of a printed circuit board housed inside, and its upper part protrudes into the terminal hole of the connector housing part, ,
The first pedestal and the second pedestal supported in parallel by inserting the plurality of connection terminals in each row through the through holes, respectively ,
The first pedestal and the second pedestal are each provided with a connecting portion and a connected portion projecting on both sides in the length direction of the main body portion in which through holes of terminals are arranged in parallel, and the connecting portion is provided with a positioning projection. On the other hand, a fitting recess for fitting and holding the positioning protrusion in a penetrating state is provided in the connected portion,
Wherein the first pedestal and the second pedestal is disposed on the printed circuit board in a state bound detachably, these first, lower portion of the plurality of connection terminals projecting from the lower surface of the second pedestal of the printed circuit board An electrical connection box is provided which is inserted into a terminal hole and connected to the conductor.

このように、接続端子を台座に組みつける工程では、該台座を各列ごとに第一台座と第二台座に分割しておくことによって端子挿入作業に必要なスペースを十分に確保できる。従って、端子挿入作業が容易になり、端子の変形やピッチの不揃いを確実に防止することができる。また、接続端子を挿入支持させた第一台座と第二台座とを結合することによって、これら接続端子が正確な一定ピッチで二列に支持された状態を容易に作り出すことができるため、接続端子の位置や変形を修正するアライメント作業が不要となり、組み付け作業性および品質安定性が向上する。   Thus, in the process of assembling the connection terminal to the pedestal, the space necessary for the terminal insertion work can be sufficiently secured by dividing the pedestal into the first pedestal and the second pedestal for each row. Accordingly, the terminal insertion work is facilitated, and the deformation of the terminals and the uneven pitch can be surely prevented. In addition, by connecting the first pedestal and the second pedestal on which the connection terminals are inserted and supported, it is possible to easily create a state in which these connection terminals are supported in two rows at an accurate constant pitch. This eliminates the need for an alignment operation for correcting the position and deformation of the assembly, improving the assembly workability and the quality stability.

前記のように、第一台座と第二台座とは、それぞれ端子の貫通孔を並設した本体部の長さ方向の両側部に連結部と被連結部とが突設され、該連結部は位置決め突起を設けている一方、前記被連結部に前記位置決め突起を貫通状態で嵌合保持する嵌合凹部が設けられている。これにより、第一台座と第二台座との着脱がワンタッチで可能となり、手間がかからない。 As described above, the first pedestal and the second pedestal are respectively provided with a connecting portion and a connected portion projecting on both sides in the length direction of the main body portion in which the through holes of the terminals are arranged side by side. While the positioning projection is provided, a fitting recess for fitting and holding the positioning projection in a penetrating state is provided in the connected portion . Thereby, attachment and detachment with the 1st base and the 2nd base becomes possible by one-touch, and it does not take time and effort.

さらに、前記プリント基板に穿設された位置決め孔に、前記位置決め突起部が嵌合されていることが好ましい。これにより、前記第一台座と第二台座とをプリント基板の正確な位置に確実に固定することができるため、相手方コネクタとの接続不良を防止できるとともに、台座の振動や位置ズレなどが生じず、プリント基板の導体と接続端子との半田付け部分に応力が加わることを防止できる。また、前記構成によれば、一方の台座の位置決め突起部は他方の台座の嵌合凹部で嵌合保持されているため、この位置決め突起部をプリント基板の位置決め孔に嵌合することにより、両台座をプリント基板に固定したことになる。従って、第一台座と第二台座とを、個別にではなく一体としてプリント基板に固定できるため、作業性が良い。
なお、前記位置決め孔へ嵌合した台座の位置決め突起部は、ビスあるいはネジ締めによってプリント基板に固定してもよい。 Furthermore, it is preferable that the positioning protrusion is fitted in a positioning hole formed in the printed board. As a result, the first pedestal and the second pedestal can be securely fixed to the correct position of the printed circuit board, so that connection failure with the mating connector can be prevented and vibration of the pedestal or misalignment does not occur. It is possible to prevent stress from being applied to the soldered portion between the conductor of the printed circuit board and the connection terminal. Further, according to the above configuration, since the positioning projections of one pedestal are fitted and held in the fitting recesses of the other pedestal, both the positioning projections are fitted into the positioning holes of the printed circuit board, The pedestal is fixed to the printed circuit board. Therefore, since the first pedestal and the second pedestal can be fixed to the printed circuit board as one unit rather than individually, workability is good.
Note that the positioning protrusion of the pedestal fitted into the positioning hole may be fixed to the printed board by screws or screws.

前記各列の接続端子は、その長さ方向の中間部が連結片で連接されていた連鎖状端子であって、前記第一、第二台座の貫通孔に各接続端子が挿入された状態で前記連結片が切断されて接続端子が分離されている。
このように、各列の複数の接続端子を連鎖状端子より形成しておくと、台座の貫通孔に一括で挿入できるため作業性がよく、かつ、各端子の出し代のバラツキを解消でき、接続不良を防止できる。 The connection terminals of each row are chained terminals whose middle portions in the length direction are connected by connecting pieces, and each connection terminal is inserted in the through hole of the first and second pedestals. The connecting piece is cut to separate the connection terminals.
In this way, if a plurality of connection terminals in each row are formed from chain-like terminals, workability is good because they can be inserted into the through holes of the pedestal at once, and variations in the allowance of each terminal can be eliminated, Connection failure can be prevented.

前記第一、第二台座に並設されている前記貫通孔は、その上端部に段状凹部を備え、前記各接続端子の長さ方向の中間部に突設されている段状凸部を前記段状凹部に嵌合させて位置決めされ、該接続端子の下端は前記プリント基板の端子孔に貫通させて半田でプリント基板の導体と接続させていることが好ましい。このように、接続端子に突設された段状凸部を台座の貫通孔の段状凹部に嵌合させることにより、該接続端子の上端のタブにコネクタを挿入接続する際の挿入力を台座およびプリント基板で受け止めることができるため、半田付け部分には応力が加わらず、半田付け部分の損傷およびそれによる接続不良を防止することができる。また、前記段状凸部は、接続端子を台座へ挿入する方向、即ち、中間部より下端側に形成されているため、該段状凸部を台座の貫通孔内に無理通しする必要がなく、軽い力で端子を挿入することができる。さらに、接続端子の下端を、プリント基板に形成した端子孔に貫通させて半田付けすることにより、半田付け部分の強度が向上し、品質安定性を高めることができる。   The through holes provided in parallel with the first and second pedestals have stepped recesses at the upper ends thereof, and stepped protrusions protruding from intermediate portions in the length direction of the connection terminals. It is preferable that the stepped recess is fitted and positioned, and the lower end of the connection terminal is passed through the terminal hole of the printed circuit board and connected to the conductor of the printed circuit board with solder. In this way, by inserting the stepped convex portion protruding from the connection terminal into the stepped concave portion of the through hole of the pedestal, the insertion force when inserting and connecting the connector to the tab at the upper end of the connection terminal is obtained. In addition, since it can be received by the printed circuit board, no stress is applied to the soldered portion, and damage to the soldered portion and connection failure caused thereby can be prevented. In addition, since the stepped convex portion is formed in the direction in which the connection terminal is inserted into the pedestal, that is, on the lower end side from the intermediate portion, there is no need to force the stepped convex portion into the through hole of the pedestal. The terminal can be inserted with a light force. Furthermore, by soldering the lower end of the connection terminal through the terminal hole formed in the printed circuit board, the strength of the soldered portion can be improved and the quality stability can be improved.

前記ケースのコネクタ収容部の各端子孔は、その周縁から突起を備え、該突起が前記接続端子の段状凸部に当接されていることが好ましい。これにより、コネクタを取り外す際に接続端子に伝わる引き抜き力がコネクタ収容部で受け止められるため、コネクタ挿入時のみでなく引き抜き時の応力も半田付け部分に加わることを防止できる。   Each terminal hole of the connector housing portion of the case is preferably provided with a protrusion from the periphery, and the protrusion is in contact with the stepped protrusion of the connection terminal. Accordingly, since the pulling force transmitted to the connection terminal when the connector is removed is received by the connector housing portion, it is possible to prevent stress not only when the connector is inserted but also when being pulled out from being applied to the soldered portion.

上述したように、本発明によれば、複数の接続端子をプリント基板に２列に取り付ける場合でも、各列ごとに第一台座と第二台座に別々に端子を挿入した後、両台座を結合して容易に２列配置状態を作ることができるため、端子挿入時に必要な作業スペースを確保でき、端子変形やピッチ不揃いを確実に防止できる。従って、アライメント作業が不要となり、組み付け作業性を向上させることができる。   As described above, according to the present invention, even when a plurality of connection terminals are attached to the printed circuit board in two rows, after inserting the terminals separately into the first pedestal and the second pedestal for each row, the two pedestals are combined. Thus, a two-row arrangement state can be easily created, so that a work space necessary for inserting a terminal can be secured, and terminal deformation and pitch irregularity can be surely prevented. Therefore, alignment work becomes unnecessary and assembly workability can be improved.

また、各列の接続端子を連結片で連接された連鎖状端子とすることにより、各端子の出し代のバラツキをなくし、接続不良を防止できる。   In addition, by connecting the connection terminals in each row to a chained terminal connected by a connecting piece, variations in the allowance of each terminal can be eliminated and connection failure can be prevented.

さらに、接続端子の段状凸部を台座の貫通孔の段状凹部に嵌合させることにより、コネクタ挿入時の応力が半田付け部分に加わることを防止でき、前記段状凸部の上面にコネクタ収容部の下向き突起を当接させることにより、コネクタ取り外し時の応力が半田付け部分に加わることも防止できる。   Furthermore, by fitting the stepped convex portion of the connection terminal to the stepped concave portion of the through hole of the pedestal, it is possible to prevent stress at the time of inserting the connector from being applied to the soldered portion, and the connector on the upper surface of the stepped convex portion By bringing the downward protrusion of the housing portion into contact with each other, it is possible to prevent the stress at the time of removing the connector from being applied to the soldered portion.

以下、本発明の実施形態を図面を参照して説明する。   Embodiments of the present invention will be described below with reference to the drawings.

図１乃至図４は本発明の第一実施形態に係る電気接続箱１０を示し、該電気接続箱１０は、ロアケース１１内にプリント回路基板１６を収容し、ロアケース１１の上面開口をアッパーケース１２で閉鎖している。該アッパーケース１２の上面には、コネクタ４０を取り付けるためのコネクタ収容部１３を備えており、該コネクタ収容部１３に取り付けられたコネクタ４０の端子４１とプリント回路基板１６の導体１８とをタブ状の接続端子２１を介して接続している。   1 to 4 show an electrical junction box 10 according to a first embodiment of the present invention. The electrical junction box 10 accommodates a printed circuit board 16 in a lower case 11, and an upper case 12 is provided with an upper surface opening of the lower case 11. It is closed at. On the upper surface of the upper case 12, a connector accommodating portion 13 for attaching the connector 40 is provided. The terminal 41 of the connector 40 attached to the connector accommodating portion 13 and the conductor 18 of the printed circuit board 16 are tabbed. The connection terminal 21 is connected.

前記コネクタ収容部１３の底部には２列の端子孔１４Ａ、１４Ｂを設けており、各列に６つずつの端子孔１４を一定ピッチで並設している。また、コネクタ収容部１３の下面の各端子孔１４の周縁には、図４に示すように下向き突起１５を突設している。   Two rows of terminal holes 14A and 14B are provided at the bottom of the connector housing portion 13, and six terminal holes 14 are arranged in parallel at a constant pitch in each row. Further, as shown in FIG. 4, downward projections 15 are provided on the periphery of each terminal hole 14 on the lower surface of the connector housing portion 13.

前記プリント回路基板１６は、図４に示すように、基板１７上に導体１８を配置してなり、該導体１８上の所要位置には、前記コネクタ収容部１３の端子孔１４に対応させて、スルーホール状の端子孔１９を一定ピッチで６つずつ２列に設け、基板１７の下面側まで貫通させている。また、基板１７の所要位置には、後述の台座３０を位置決め固定するための位置決め孔２０を穿設している。   As shown in FIG. 4, the printed circuit board 16 has a conductor 18 disposed on the board 17, and a required position on the conductor 18 corresponds to the terminal hole 14 of the connector housing portion 13. Through-hole-shaped terminal holes 19 are provided in two rows of six at a constant pitch and penetrated to the lower surface side of the substrate 17. A positioning hole 20 for positioning and fixing a pedestal 30 to be described later is formed at a required position of the substrate 17.

前記接続端子２１は、複数本の接続端子２１の上端および下端位置を揃えた状態で、隣接する端子２１の長さ方向の中間部を連結片２３で連接した連鎖状端子であり、各端子２１の長さ方向の中間部で前記連結片２３より下方位置には、左右一対の段状凸部２２を突設している。この接続端子２１は、２つの台座３０に一列ずつ挿入して保持させたうえで前記プリント回路基板１６に取り付けられている。   The connection terminal 21 is a chain terminal in which intermediate portions in the length direction of adjacent terminals 21 are connected by a connecting piece 23 in a state where the upper end and lower end positions of the plurality of connection terminals 21 are aligned. A pair of left and right stepped protrusions 22 project from the connecting piece 23 at an intermediate portion in the length direction. The connection terminals 21 are attached to the printed circuit board 16 after being inserted and held in rows on the two pedestals 30.

前記台座３０は、図２（Ａ）（Ｂ）に示すように、本体部３１と、該本体部３１の長さ方向の両端部に突設された連結部３２および被連結部３３とを備え、絶縁素材で一体成形している。本体部３１は、肉厚で細長い上壁３１ａと、該上壁３１ａの四方側縁より下方へ突設した側壁３１ｂとからなる下方開口の箱形状よりなり、上壁３１ａには、接続端子２１を挿入する６つの貫通孔３４を一定ピッチで一列に並設している。この貫通孔３４の上端部には、接続端子２１の前記段状凸部２２と嵌合する段状凹部３４ａを形成している。
前記連結部３２は、前記本体部３１の長さ方向の一端より上壁３１ａに連続して突設され、位置決め突起３２ａを下向きに突設している。この位置決め突起３２ａは、本体部３１の下面３１ｃよりも下方に突出し、その下面にはビス穴３２ｃを設け、外周面には上下方向に連続する多数の凹凸３２ｂを形成している。
前記被連結部３３は、前記本体部３１の長さ方向の他端より前記側壁３１ｂに連続して突設された枠部３３ｂよりなる。該枠部３３ｂは、前記位置決め突起３２ａと嵌合する嵌合凹部３３ａを形成した断面Ｃ字形状よりなり、本体部３１の前記貫通穴３４の配列方向に直交する一側方に前記位置決め突起３２ａ用の挿入口３３ｃを切り欠くと共に、位置決め突起３２ａの圧入、取り外しに際して該挿入口３３ｃを拡縮できる可撓性を備えている。また、枠部３３ｂの内周面には、上下方向に連続する多数の凹凸３３ｄを形成している。 As shown in FIGS. 2A and 2B, the pedestal 30 includes a main body portion 31, a connecting portion 32 and a connected portion 33 projecting from both end portions in the length direction of the main body portion 31. , Integrally molded with insulating material. The main body 31 has a box shape with a lower opening made up of a thick and long upper wall 31a and a side wall 31b projecting downward from the four side edges of the upper wall 31a. The six through holes 34 into which are inserted are arranged in a line at a constant pitch. A stepped recess 34 a that fits with the stepped protrusion 22 of the connection terminal 21 is formed at the upper end of the through hole 34.
The connecting portion 32 protrudes continuously from the one end in the length direction of the main body portion 31 to the upper wall 31a and protrudes the positioning protrusion 32a downward. The positioning protrusion 32a protrudes below the lower surface 31c of the main body 31, and has a screw hole 32c formed on the lower surface thereof, and a plurality of concaves and convexes 32b continuous in the vertical direction are formed on the outer peripheral surface.
The connected portion 33 includes a frame portion 33b that projects continuously from the other end in the length direction of the main body portion 31 to the side wall 31b. The frame portion 33b has a C-shaped cross-section in which a fitting recess 33a that fits with the positioning projection 32a is formed, and the positioning projection 32a is formed on one side perpendicular to the arrangement direction of the through holes 34 of the main body portion 31. The insertion port 33c is cut out and the insertion port 33c can be expanded and contracted when the positioning projection 32a is press-fitted and removed. In addition, a large number of concaves and convexes 33d that are continuous in the vertical direction are formed on the inner peripheral surface of the frame portion 33b.

前記構成の台座３０を用いて接続端子２１をプリント回路基板１６に取り付ける作業は、まず、図３（Ａ）に示すように、連鎖状に連接された状態の６本の接続端子２１を、分割された第一台座３０Ａと第二台座３０Ｂの貫通孔３４に、それぞれ６本ずつ挿入する。このとき、図３（Ｂ）に示すように、各接続端子２１の前記段状凸部２２が貫通孔３４の段状凹部３４ａに完全に嵌合するように挿入し、該接続端子２１の下側部２１ａを第一台座３０Ａと第二台座３０Ｂの下面より下方に突出させる。次に、図３（Ｃ）に示すように、各接続端子２１を連接している連結片２３を切断して全接続端子２１を分離した後、第一台座３０Ａと第二台座３０Ｂとを、一方の被連結部３３の挿入口３３ｃと他方の位置決め突起３２ａとが対向するように配置し、一方の挿入口３３ｃに他方の位置決め突起３２ａを押し付けて挿入し、該位置決め突起３２ａを嵌合凹部３３ａに嵌合させる。このとき、嵌合凹部３３ａの内周面の凹凸３３ｄと位置決め突起３２ａの外周面の凹凸３２ｂとが互いに係合し、両者を強固に結合させる。
次いで、図３（Ｄ）および図４に示すように、結合した第一台座３０Ａと第二台座３０Ｂの両端の位置決め突起３２ａをプリント回路基板１６の位置決め孔２０に挿入し、該位置決め突起３２ａのビス穴３２ｃに下方からビス３５を圧入して、プリント回路基板１６に第一台座３０Ａと第二台座３０Ｂとを一体に固定する。このとき同時に、各接続端子２１の下端部はプリント回路基板１６の端子孔１９に挿入される。 The operation of attaching the connection terminals 21 to the printed circuit board 16 using the pedestal 30 having the above-described configuration is as follows. First, as shown in FIG. 3A, the six connection terminals 21 connected in a chain are divided. Six pieces are inserted into the through holes 34 of the first pedestal 30A and the second pedestal 30B. At this time, as shown in FIG. 3 (B), the stepped protrusions 22 of the connection terminals 21 are inserted so as to be completely fitted into the stepped recesses 34a of the through holes 34. The side portion 21a is protruded downward from the lower surfaces of the first pedestal 30A and the second pedestal 30B. Next, as shown in FIG. 3C, after cutting the connecting pieces 23 connecting the connection terminals 21 and separating all the connection terminals 21, the first pedestal 30A and the second pedestal 30B are The insertion port 33c of the one connected portion 33 and the other positioning projection 32a are arranged so as to face each other, the other positioning projection 32a is pressed into the one insertion port 33c and inserted, and the positioning projection 32a is fitted into the fitting recess. It is made to fit in 33a. At this time, the unevenness 33d on the inner peripheral surface of the fitting recess 33a and the unevenness 32b on the outer peripheral surface of the positioning protrusion 32a are engaged with each other, thereby firmly bonding both.
Next, as shown in FIG. 3D and FIG. 4, the positioning protrusions 32a on both ends of the combined first pedestal 30A and second pedestal 30B are inserted into the positioning holes 20 of the printed circuit board 16, and the positioning protrusions 32a A screw 35 is press-fitted into the screw hole 32c from below, and the first pedestal 30A and the second pedestal 30B are integrally fixed to the printed circuit board 16. At the same time, the lower ends of the connection terminals 21 are inserted into the terminal holes 19 of the printed circuit board 16.

このようにプリント回路基板１６の端子孔１９に挿入された接続端子２１の下側部２１ａは、図４に示すように、半田付けＨによって導体１８と接続される。最後に、アッパーカバー１２をロアケース１１に被せて閉鎖することによって、接続端子２１の上側部２１ｂがコネクタ収容部１３の各端子孔１４から外方に突出し、コネクタ４０のメス端子４１に挿入接続されると共に、コネクタ収容部１３の下面に突設した下向き突起１５が各接続端子２１の段状凸部２２の上面に当接する。   The lower side portion 21a of the connection terminal 21 inserted into the terminal hole 19 of the printed circuit board 16 in this manner is connected to the conductor 18 by soldering H as shown in FIG. Finally, by closing the upper cover 12 over the lower case 11, the upper portion 21 b of the connection terminal 21 protrudes outward from each terminal hole 14 of the connector housing portion 13 and is inserted and connected to the female terminal 41 of the connector 40. At the same time, the downward projection 15 projecting from the lower surface of the connector housing portion 13 comes into contact with the upper surface of the stepped convex portion 22 of each connection terminal 21.

前記構成の電気接続箱１０は、接続端子２１を一列ずつ別々の第一台座３０Ａ、第二台座３０Ｂに挿入支持させるため、各台座３０Ａ、３０Ｂへの挿入作業に必要なスペースを十分に確保でき、挿入作業に起因する端子２１の変形や、それによるピッチの不揃いをより確実に防止できる。また、このように接続端子２１を挿入支持させた第一台座３０Ａ、第二台座３０Ｂは、互いの連結部３２と被連結部３３とを押し付け合うことによって容易に結合できるため、接続端子２１をピッチを揃えて２列に並設した状態を容易に作り出すことができ、組み付け後のアライメント作業が不要となるため作業性が向上する。   Since the electrical connection box 10 having the above-described configuration inserts and supports the connection terminals 21 in the first pedestal 30A and the second pedestal 30B, one row at a time, it is possible to secure sufficient space for insertion into the pedestals 30A and 30B. Therefore, it is possible to more reliably prevent the deformation of the terminal 21 due to the insertion work and the uneven pitch caused by the deformation. Further, since the first pedestal 30A and the second pedestal 30B that have inserted and supported the connection terminal 21 in this way can be easily coupled by pressing the coupling part 32 and the coupled part 33 together, the connection terminal 21 is It is possible to easily create a state in which the pitches are aligned and arranged in two rows, and the workability is improved because the alignment work after assembly is not necessary.

さらに、接続端子２１を連鎖状のまま台座３０に挿入することにより、各接続端子２１の出し代が揃い、接続不良を防止することができる。   Further, by inserting the connection terminals 21 into the pedestal 30 in a chained manner, the allowances for the connection terminals 21 are aligned, and poor connection can be prevented.

さらにまた、接続端子２１に設けた段状凸部２２を貫通孔３４の段状凹部３４ａに嵌合させることにより、コネクタ４０の挿入時に接続端子２１に加わる挿入力が半田付けＨ部分に伝わることを防止でき、また、コネクタ収容部１３の下向き突起１５が接続端子２１の段状凸部２２の上面を押さえることにより、コネクタ４０の取り外し時に接続端子２１に加わる引き抜き力が半田付けＨ部分に伝わることを防止できるため、半田付けＨ部分の損傷を防ぎ、品質安定性を高めることができる。第一台座３０Ａと第二台座３０Ｂとをプリント回路基板１６の位置決め孔２０に挿入固定して、台座３０Ａ、３０Ｂの振動や位置ズレを防止していることも、半田付けＨ部分に応力が加わることを防止している。   Furthermore, by inserting the stepped protrusion 22 provided on the connection terminal 21 into the stepped recess 34a of the through hole 34, the insertion force applied to the connection terminal 21 when the connector 40 is inserted is transmitted to the soldering H portion. In addition, the downward projection 15 of the connector housing portion 13 presses the upper surface of the stepped convex portion 22 of the connection terminal 21, whereby the pulling force applied to the connection terminal 21 when the connector 40 is removed is transmitted to the soldering H portion. Since this can be prevented, damage to the soldered H portion can be prevented and quality stability can be improved. The first pedestal 30A and the second pedestal 30B are inserted and fixed in the positioning holes 20 of the printed circuit board 16 to prevent vibration and displacement of the pedestals 30A and 30B, and stress is applied to the soldered H portion. To prevent that.

なお、本発明は前記実施形態に限定するものではなく、プリント回路基板１６の位置決め孔２０と台座３０とをネジ締め固定してもよい。また、接続端子２１に形成する段状凸部２２は、端子２１の厚み方向に突設しても、周囲全体に鍔状に形成してもよく、貫通孔３４の段状凹部３４ａはこれら段状凸部２２の形状に対応させて形成すればよい。   The present invention is not limited to the above embodiment, and the positioning hole 20 and the pedestal 30 of the printed circuit board 16 may be fixed with screws. Further, the stepped protrusions 22 formed on the connection terminal 21 may protrude in the thickness direction of the terminal 21 or may be formed in a bowl shape around the entire periphery, and the stepped recesses 34a of the through holes 34 are formed in these steps. What is necessary is just to form corresponding to the shape of the shape convex part 22. FIG.

本発明の第一実施形態に係る電気接続箱の分解斜視図である。It is a disassembled perspective view of the electrical junction box which concerns on 1st embodiment of this invention. 分割された台座を示し、（Ａ）は斜視図であり、（Ｂ）は正面図である。The divided pedestal is shown, (A) is a perspective view, and (B) is a front view. （Ａ）〜（Ｄ）は、図２に示す台座に接続端子を取り付けて、該台座をプリント基板に取り付けるまでの作業手順を示す斜視図である。(A)-(D) are perspective views which show the operation | work procedure from attaching a connection terminal to the base shown in FIG. 2, and attaching this base to a printed circuit board. 図１に示す電気接続箱の要部断面図である。It is principal part sectional drawing of the electrical-connection box shown in FIG. 従来例の図である。It is a figure of a prior art example. 他の従来例の図である。It is a figure of another prior art example.

符号の説明Explanation of symbols

１０ 電気接続箱
１３ コネクタ収容部
１５ 下向き突起
１６ プリント回路基板
１９ 端子孔
２０ 位置決め孔
２１ 接続端子
２２ 段状凸部
３０Ａ 第一台座
３０Ｂ 第二台座
３１ 本体部
３２ａ 位置決め突起
３３ａ 嵌合凹部
３４ 貫通孔 DESCRIPTION OF SYMBOLS 10 Electrical connection box 13 Connector accommodating part 15 Down protrusion 16 Printed circuit board 19 Terminal hole 20 Positioning hole 21 Connection terminal 22 Stepped convex part 30A 1st base 30B 2nd base 31 Main body part 32a Positioning protrusion 33a Fitting recessed part 34 Through-hole

Claims (5)

ケース外面に形成されるコネクタ収容部に２列の端子孔を設け、各列に一定ピッチの端子孔を複数個並設している一方、該ケース内部に収容されるプリント基板の導体に、タブ状の接続端子の下端を半田づけで固定して立設し、その上側部を前記コネクタ収容部の端子孔に突出している電気接続箱であって、
前記各列の複数の接続端子を夫々貫通孔に挿通して並列支持した第一台座と第二台座とを分割して備え、
前記第一台座と第二台座とは、それぞれ端子の貫通孔を並設した本体部の長さ方向の両側部に連結部と被連結部とが突設され、該連結部は位置決め突起を設けている一方、前記被連結部に前記位置決め突起を貫通状態で嵌合保持する嵌合凹部が設けられており、
前記第一台座と第二台座とは着脱自在に結合した状態で前記プリント基板上に配置され、これら第一、第二台座の下面から突出する前記複数の接続端子の下端部が前記プリント基板の端子孔に挿入されて前記導体と接続されていることを特徴とする電気接続箱。 Two rows of terminal holes are provided in the connector accommodating portion formed on the outer surface of the case, and a plurality of terminal holes having a constant pitch are arranged in parallel in each row, while tabs are provided on the conductors of the printed circuit board accommodated in the case. An electrical connection box, wherein the lower end of the connection terminal is fixed by soldering, and the upper side portion of the connection terminal protrudes into the terminal hole of the connector housing portion,
The first pedestal and the second pedestal supported in parallel by inserting the plurality of connection terminals in each row through the through holes, respectively ,
The first pedestal and the second pedestal are each provided with a connecting portion and a connected portion projecting on both sides in the length direction of the main body portion in which through holes of terminals are arranged in parallel, and the connecting portion is provided with a positioning projection. On the other hand, a fitting recess for fitting and holding the positioning protrusion in a penetrating state is provided in the connected portion,
Wherein the first pedestal and the second pedestal is disposed on the printed circuit board in a state bound detachably, these first, lower portion of the plurality of connection terminals projecting from the lower surface of the second pedestal of the printed circuit board An electrical junction box, which is inserted into a terminal hole and connected to the conductor. 前記プリント基板に穿設された位置決め孔に、前記位置決め突起が嵌合されている請求項１に記載の電気接続箱。 The electrical connection box according to claim 1 , wherein the positioning protrusion is fitted in a positioning hole formed in the printed board . 前記各列の接続端子は、その長さ方向の中間部が連結片で連接されていた連鎖状端子であって、前記第一、第二台座の貫通孔に各接続端子が挿入された状態で前記連結片が切断されて接続端子が分離されているものである請求項１または請求項２に記載の電気接続箱。 The connection terminals of each row are chained terminals whose middle portions in the length direction are connected by connecting pieces, and each connection terminal is inserted in the through hole of the first and second pedestals. The electrical connection box according to claim 1 or 2, wherein the connecting piece is cut to separate the connection terminals . 前記第一、第二台座に並設されている前記貫通孔は、その上端部に段状凹部を備え、前記各接続端子の長さ方向の中間部に突設されている段状凸部を前記段状凹部に嵌合させて位置決めされ、該接続端子の下端は前記プリント基板の端子孔に貫通させて半田でプリント基板の導体と接続されている請求項１乃至請求項３のいずれか１項に記載の電気接続箱。 The through holes provided in parallel with the first and second pedestals have stepped recesses at the upper ends thereof, and stepped protrusions protruding from intermediate portions in the length direction of the connection terminals. 4. The device according to claim 1, wherein the stepped recess is fitted and positioned, and the lower end of the connection terminal penetrates the terminal hole of the printed circuit board and is connected to the conductor of the printed circuit board by solder. The electrical junction box described in the section. 前記ケースのコネクタ収容部の各端子孔は、その周縁から突起を備え、該突起が前記接続端子の段状凸部に当接されている請求項４に記載の電気接続箱。 5. The electrical connection box according to claim 4, wherein each terminal hole of the connector housing portion of the case includes a protrusion from a peripheral edge thereof, and the protrusion is in contact with the stepped protrusion of the connection terminal .
JP2004181230A 2004-06-18 2004-06-18 Electrical junction box Expired - Fee Related JP4241520B2 (en)

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JP4720525B2 (en) * 2006-02-02 2011-07-13 住友電装株式会社 Electrical junction box for automobile
JP4800079B2 (en) * 2006-03-23 2011-10-26 矢崎総業株式会社 Electrical junction box
JP5198198B2 (en) * 2008-09-24 2013-05-15 矢崎総業株式会社 Electrical junction box
JP5077190B2 (en) * 2008-10-28 2012-11-21 住友電装株式会社 Printed board
JP5743091B2 (en) * 2011-08-29 2015-07-01 住友電装株式会社 Electrical junction box
JP6642193B2 (en) * 2016-03-29 2020-02-05 住友電装株式会社 Connector with board and electrical connection box
JP7168618B2 (en) 2020-08-21 2022-11-09 矢崎総業株式会社 Substrate built-in connector and manufacturing method for chain terminal of substrate built-in connector

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