JP2010063269A - Electrical junction box - Google Patents

Electrical junction box Download PDF

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JP2010063269A
JP2010063269A JP2008226383A JP2008226383A JP2010063269A JP 2010063269 A JP2010063269 A JP 2010063269A JP 2008226383 A JP2008226383 A JP 2008226383A JP 2008226383 A JP2008226383 A JP 2008226383A JP 2010063269 A JP2010063269 A JP 2010063269A
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fuse
bus bar
vertical bus
case
terminal
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JP5141451B2 (en
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Masahiro Tagano
正寛 多賀野
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Sumitomo Wiring Systems Ltd
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Sumitomo Wiring Systems Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/0238—Electrical distribution centers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Or Junction Boxes (AREA)
  • Multi-Conductor Connections (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To prevent each horizontal part of a vertical bus-bar connected to each fuse and stored in an electrical junction box, from being deformed due to insertion pressure of each fuse. <P>SOLUTION: A vertical bus-bar 30 is stored in a case 11 while each fuse 40 inserted into a fuse storage part 12 provided in the case 11 and each fuse connection terminal 33 provided to the vertical bus-bar 30 are electrically connected to each other. Each fuse connection terminal 33 is protrusively formed by folding a horizontal part 32 folded from a substrate part 31 of the vertical bus-bar 30. Each horizontal part 32 is not supported by the case 11 of an electrical junction box 10 or by an insulating plate stored in the case 11. A lock part 23 is provided below the fuse storage part 12 so as to lock each horizontal part 32. Consequently, each horizontal part 32 of the bus-bar 30 is prevented from being deformed due to insertion pressure of each fuse 40. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、電気接続箱に関し、詳しくは、ケース内部に収容される縦バスバーの水平折曲部にヒューズ接続端子を設けた電気接続箱において、ヒューズの挿入力による縦バスバーの変形の防止を図るものである。   The present invention relates to an electrical connection box, and more particularly, in an electrical connection box in which a fuse connection terminal is provided at a horizontal bent portion of a vertical bus bar housed in a case, the vertical bus bar is prevented from being deformed by the insertion force of the fuse. Is.

電気接続箱において、ケースの表面に設けたヒューズ収容部に差し込むヒューズは、ケース内部に内部回路材として収容しているバスバーのヒューズ接続端子と接続される。該バスバーはケース内部に絶縁板で支持して水平方向に配置し、該水平配置される平バスバーから立設するヒューズ接続端子にヒューズ端子を接続している場合が多い。この場合、バスバーは絶縁板で支持されているため、ヒューズ装着時の差し込み負荷によりバスバーに変形が発生するのが防止できる。
一方、前記絶縁板で支持する水平方向の平バスバーに変えて、ケースのヒューズ収容部やリレー収容部を設けたケースの上下面に対して、バスバーを垂直方向に配置する縦バスバーが用いられる場合がある。この縦バスバーを使用すると平バスバーよりも絶縁板の使用量の低減が図れ、電気接続箱の軽量化および小型化が可能となる利点がある。しかしながら、縦バスバーはケースのフレームと係止して保持し、絶縁板で支持していないため、ヒューズ接続端子をヒューズと接続する際に上下方向の負荷を受けると変形が発生しやすい問題がある。 In the electrical junction box, the fuse inserted into the fuse accommodating portion provided on the surface of the case is connected to the fuse connection terminal of the bus bar accommodated as an internal circuit material inside the case. In many cases, the bus bar is supported by an insulating plate inside the case and arranged in a horizontal direction, and a fuse terminal is connected to a fuse connection terminal standing upright from the horizontally arranged flat bus bar. In this case, since the bus bar is supported by the insulating plate, the bus bar can be prevented from being deformed by the insertion load when the fuse is mounted.
On the other hand, instead of the horizontal flat bus bar supported by the insulating plate, a vertical bus bar is used in which the bus bar is arranged vertically with respect to the upper and lower surfaces of the case provided with the fuse accommodating portion and the relay accommodating portion. There is. When this vertical bus bar is used, the amount of the insulating plate used can be reduced as compared with the flat bus bar, and there is an advantage that the electric connection box can be reduced in weight and size. However, since the vertical bus bar is locked and held with the frame of the case and is not supported by the insulating plate, there is a problem that deformation is likely to occur when a load is applied in the vertical direction when the fuse connection terminal is connected to the fuse. .

例えば、図５に示す電気接続箱１は、ケース２内に、垂直方向の基板部３ａの上端より複数のタブ３ｂを突設した縦バスバー３を収容固定し、中継端子４を接続した前記タブ３ｂをケース２のヒューズ収容部５の下部に挿入すると共に、前記中継端子４に上方からヒューズ６の端子６ａを挿入して、中継端子４を介して前記縦バスバー３とヒューズ６とを接続している。（実開平７−８９６６号公報（特許文献１）参照）
前記縦バスバー３は、基板部３ａに設けた係止穴３ｃに、ケース２より突設した係止突起７を挿入係止してケース２に固定している。 For example, the electrical junction box 1 shown in FIG. 5 has the vertical bus bar 3 in which a plurality of tabs 3 b project from the upper end of the vertical board portion 3 a in the case 2, and the relay terminal 4 is connected to the tab. 3 b is inserted into the lower part of the fuse housing 5 of the case 2, and the terminal 6 a of the fuse 6 is inserted into the relay terminal 4 from above, and the vertical bus bar 3 and the fuse 6 are connected via the relay terminal 4. ing. (See Japanese Utility Model Publication No. 7-8966 (Patent Document 1))
The vertical bus bar 3 is fixed to the case 2 by inserting and locking a locking projection 7 protruding from the case 2 into a locking hole 3 c provided in the substrate portion 3 a.

電気接続箱の設計上、図６に示すように、縦バスバー８の垂直方向の基板部８ａとヒューズの収容位置との位置ずれが生じると、基板部８を屈曲して水平部８ｂを形成し、該水平部８ｂをさらに垂直に折り曲げてタブ８ｃを形成し、ヒューズ９の端子９ａの挿入位置とタブ８ｃの位置とが合うように調整する場合がある。   Due to the design of the electrical junction box, as shown in FIG. 6, if a positional deviation occurs between the vertical board portion 8 a of the vertical bus bar 8 and the fuse accommodating position, the board portion 8 is bent to form a horizontal portion 8 b. In some cases, the horizontal portion 8b is further bent vertically to form the tab 8c, and the insertion position of the terminal 9a of the fuse 9 and the position of the tab 8c are adjusted.

しかしながら、縦バスバー８を用いる場合、前記水平部８ｂの下面側を絶縁板等で支持することは少ないため、ヒューズ９の挿入圧によって水平部８ｂが図中破線で示すように沈み込み、変形しやすい点に問題がある。特に、ヒューズが大容量ヒューズである場合、挿入圧も大きいため、特に水平部８ｂは変形しやすくなる。   However, when the vertical bus bar 8 is used, since the lower surface side of the horizontal portion 8b is rarely supported by an insulating plate or the like, the horizontal portion 8b sinks and deforms as indicated by a broken line in the figure due to the insertion pressure of the fuse 9. There is a problem with easy points. In particular, when the fuse is a large-capacity fuse, since the insertion pressure is large, the horizontal portion 8b is particularly easily deformed.

実開平７−８９６６号公報Japanese Utility Model Publication No. 7-8966

本発明は前記問題に鑑みてなされたもので、電気接続箱のケース内部に収容されてヒューズと接続される縦バスバーに設けられた水平部が、ヒューズの挿入圧を受けて変形することを防止できる電気接続箱の提供を課題としている。   The present invention has been made in view of the above problems, and prevents the horizontal portion provided in the vertical bus bar, which is accommodated inside the case of the electrical junction box and connected to the fuse, from being deformed due to the insertion pressure of the fuse. The challenge is to provide an electrical junction box that can be used.

前記課題を解決するために、本発明は、ケース内部に縦バスバーを収容していると共に、該ケースに設けたヒューズ収容部に差し込まれるヒューズと前記縦バスバーに設けたヒューズ接続用端子とを電気接続している電気接続箱において、
前記縦バスバーに折り曲げて形成した水平部に前記ヒューズ接続用端子を設け、
前記ヒューズ収容部の下方に前記縦バスバーの前記水平部を支持するロック部を設け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 problems, the present invention accommodates a vertical bus bar inside a case, and electrically connects a fuse inserted into a fuse accommodating portion provided in the case and a fuse connection terminal provided in the vertical bus bar. In the connected electrical junction box,
Provide the fuse connection terminal in a horizontal portion formed by bending the vertical bus bar,
An electrical junction box is provided, wherein a lock portion for supporting the horizontal portion of the vertical bus bar is provided below the fuse housing portion.

このように、縦バスバーの水平部を、ケースのヒューズ収容部の下方に設けたロック部でロック係止することにより、前記水平部はロック部によって支持されるため、ヒューズの挿入圧を受けた際の水平部の沈み込みや変形を防止することができる。   In this way, the horizontal portion of the vertical bus bar is locked and locked by the lock portion provided below the fuse housing portion of the case, so that the horizontal portion is supported by the lock portion, so that the insertion pressure of the fuse is received. The horizontal portion can be prevented from sinking or deforming.

前記ロック部は、ヒューズ収容部の底壁から突設され、係止突部を有する一対の突起部からなり、前記縦バスバーの前記水平部には、前記ロック部が挿入係止される係止穴を設けている。   The lock portion is formed of a pair of protrusions protruding from the bottom wall of the fuse housing portion and having locking protrusions, and the horizontal portion of the vertical bus bar is locked so that the lock portion is inserted and locked A hole is provided.

あるいは、前記ロック部は、ヒューズ収容部を囲む周壁、あるいはヒューズ収容部内の空間を仕切る仕切壁に設けてもよい。   Alternatively, the lock portion may be provided on a peripheral wall surrounding the fuse accommodating portion or a partition wall that partitions a space in the fuse accommodating portion.

前記ヒューズは１００Ａ〜５０Ａの大容量ヒューズで大型の場合、挿入力が大きいため、特に好適となる。   Since the fuse is a large capacity fuse of 100A to 50A and has a large insertion force, it is particularly suitable.

前記縦バスバーに設けるヒューズ接続用端子は、前記水平部から更に垂直方向に屈曲させて形成していることが好ましい。
また、該縦バスバーに設けるヒューズ接続用端子は、ヒューズの入力端子と接続する場合が多い。
ヒューズの出力端子は、前記縦バスバーとは異なるバスバーに接続され、あるいは、電線端末の端子と接続される。ヒューズの出力端子をバスバーと接続する場合において、該バスバーに設けられた水平部が絶縁板等で支持されていない場合は、ヒューズの入力端子と接続される前記縦バスバーの場合と同様に、ヒューズ収容部の壁部に設けたロック部によって水平部をロック係止する構成とすることが好ましい。 It is preferable that the fuse connection terminal provided on the vertical bus bar is formed by further bending in the vertical direction from the horizontal portion.
Further, the fuse connection terminal provided on the vertical bus bar is often connected to the input terminal of the fuse.
The output terminal of the fuse is connected to a bus bar different from the vertical bus bar, or is connected to a terminal of the electric wire terminal. When connecting the output terminal of the fuse to the bus bar, if the horizontal portion provided on the bus bar is not supported by an insulating plate or the like, as in the case of the vertical bus bar connected to the input terminal of the fuse, It is preferable that the horizontal portion is locked and locked by a lock portion provided on the wall portion of the housing portion.

前記ヒューズ収容部は、ケースに複数個並設している場合には、前記縦バスバーに設けるヒューズ接続用端子は、１本の縦バスバーに、前記ヒューズ接続用端子となる複数のタブを間隔をあけて折り曲げて立設している。   When a plurality of the fuse accommodating portions are arranged in parallel in the case, the fuse connecting terminals provided on the vertical bus bar are spaced apart from a plurality of tabs serving as the fuse connecting terminals on one vertical bus bar. Opened, bent and erected.

各ヒューズ収容部内には中継端子を収容し、該中継端子を介して縦バスバーのヒューズ接続用端子とヒューズの端子とを接続する構成としてもよい。該中継端子には雌型端子を好適に用いることができる。   A relay terminal may be accommodated in each fuse accommodating portion, and the fuse connection terminal of the vertical bus bar and the fuse terminal may be connected via the relay terminal. A female terminal can be suitably used as the relay terminal.

前記電気接続箱の例としては、自動車に配索されるワイヤハーネスと接続されるものが挙げられる。   Examples of the electrical junction box include those connected to a wire harness routed in an automobile.

上述したように、本発明によれば、電気接続箱のケースに設けたヒューズ収容部の下方にロック部を形成し、該ロック部によって縦バスバーの水平部をロック係止して支持することができるため、該水平部がヒューズの差し込み時に挿入圧を受けても沈み込みや変形を防止することができる。   As described above, according to the present invention, the lock portion is formed below the fuse housing portion provided in the case of the electrical junction box, and the horizontal portion of the vertical busbar can be locked and supported by the lock portion. Therefore, the horizontal portion can be prevented from sinking or deforming even if it receives an insertion pressure when the fuse is inserted.

以下、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４に、本発明の第一実施形態に係る電気接続箱１０を示す。
電気接続箱１０は、自動車に配索されるワイヤハーネスに接続される。該電気接続箱１０のケース１１は、図１および図２に示すように、上面側にヒューズ収容部１２を並設しており、図示の実施形態では２個のヒューズ収容部１２を設けている。該ヒューズ収容部１２には８０Ａの大容量のヒューズ４０をそれぞれ取り付けている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 4 show an electrical junction box 10 according to the first embodiment of the present invention.
The electrical junction box 10 is connected to a wire harness routed in the automobile. As shown in FIGS. 1 and 2, the case 11 of the electrical junction box 10 has a fuse housing portion 12 arranged in parallel on the upper surface side, and in the illustrated embodiment, two fuse housing portions 12 are provided. . 80 A large-capacity fuses 40 are respectively attached to the fuse accommodating portions 12.

ケース１１の内部には内部回路材として縦バスバー３０をケース内に設けたランス（図示せず）と係止して固定しており、前記ヒューズ４０と接続する内部回路材も縦バスバー３０としている。
ケース１１の上面と下面にはアッパーカバーとロアカバー（図示せず）を被せ、互いにロック結合させる。 Inside the case 11, a vertical bus bar 30 is fixed as an internal circuit material by engaging with a lance (not shown) provided in the case, and the internal circuit material connected to the fuse 40 is also a vertical bus bar 30. .
The upper surface and the lower surface of the case 11 are covered with an upper cover and a lower cover (not shown), and are locked to each other.

前記ヒューズ収容部１２は、図４（Ａ）に示すように、周壁１３に囲まれた空間を底壁１４で上下に仕切っている。底壁１４には、ヒューズ４０の入力端子４１を挿入する入力端子挿入穴１５と、ヒューズ４０の出力端子４２を挿入する出力端子挿入穴１６とを設けている。底壁１４の下部には、図４（Ｂ）に示すように、仕切壁１９で仕切られた入力端子用キャビティ１７と出力端子用キャビティ１８とを形成している。   As shown in FIG. 4A, the fuse accommodating portion 12 partitions a space surrounded by the peripheral wall 13 with a bottom wall 14 in the vertical direction. The bottom wall 14 is provided with an input terminal insertion hole 15 into which the input terminal 41 of the fuse 40 is inserted, and an output terminal insertion hole 16 into which the output terminal 42 of the fuse 40 is inserted. As shown in FIG. 4B, an input terminal cavity 17 and an output terminal cavity 18 that are partitioned by a partition wall 19 are formed in the lower portion of the bottom wall 14.

前記入力端子用キャビティ１７内の空間は、図４（Ｃ）に示すように、仕切壁２２を介して端子接続用空間２０とロック用空間２１とに分かれている。端子接続用空間２０には後述する中継端子５０を収容固定している。ロック用空間２１には、ロック部２３を突設している。   As shown in FIG. 4C, the space in the input terminal cavity 17 is divided into a terminal connection space 20 and a lock space 21 through a partition wall 22. A relay terminal 50 described later is accommodated and fixed in the terminal connection space 20. In the lock space 21, a lock portion 23 is projected.

前記ロック部２３は、図２および図３に示すように、ヒューズ収容部１２の底壁１４から、互いに間隔をあけて下向きに突設した弾性を有する一対の突起部２４からなる。各突起部２４の先端は、図４（Ｃ）に示すように、端子接続用空間２０の下端開口よりも下方に突出しており、この突出部分には、図３に示すように、互いに離反方向に羽根状に係止突部２５を突設している。該係止突部２５は先端に向かうに従って先細りとなるテーパ部２５ａと、縦バスバー３０に設けられた後述の係止穴３４の周囲に係合する段部２５ｂを備えている。   As shown in FIGS. 2 and 3, the lock portion 23 includes a pair of projecting portions 24 having elasticity protruding downward from the bottom wall 14 of the fuse housing portion 12 with a space therebetween. As shown in FIG. 4 (C), the tips of the protrusions 24 protrude downward from the lower end opening of the terminal connection space 20, and the protruding portions are separated from each other as shown in FIG. A locking projection 25 is projected in a blade shape. The locking protrusion 25 includes a tapered portion 25a that tapers toward the tip, and a step portion 25b that engages with a locking hole 34 described later provided in the vertical bus bar 30.

前記縦バスバー３０は、前記ケース１１の周壁１１ａに沿った内側に垂直に挿入されて前記２個のヒューズ収容部１２の並設方向に延在する基板部３１と、該基板部３１の下端から延在させて折り曲げて形成した２枚の水平部３２と、各水平部３２の側部から延在させて折り曲げて上向きに突設した２つの雄タブ形状のヒューズ接続用端子３３とからなる。該ヒューズ接続用端子３３は基板部３１に対して直交方向に配置される。前記水平部３２には、前記ロック部２３を挿入係止する係止穴３４を形成している。該係止穴３４は長方形状でヒューズ接続用端子３３と平行に延在し、ヒューズ接続用端子３３と対向する位置に設けられている。   The vertical bus bar 30 is inserted vertically from the inside along the peripheral wall 11a of the case 11 and extends in the direction in which the two fuse accommodating portions 12 are arranged, and from the lower end of the substrate portion 31. It is composed of two horizontal portions 32 formed by extending and bending, and two male tab-shaped fuse connection terminals 33 extending from the side portions of the respective horizontal portions 32 and bent upward and projecting upward. The fuse connection terminal 33 is arranged in a direction orthogonal to the substrate portion 31. The horizontal portion 32 is formed with a locking hole 34 for inserting and locking the lock portion 23. The locking hole 34 is rectangular and extends in parallel with the fuse connection terminal 33, and is provided at a position facing the fuse connection terminal 33.

前記縦バスバー３０には、基板部３１の前記延在方向の一端と２つの水平部３２の間に係止穴３５を設けている。該係止穴３５に、ケース１１内の壁に形成したランス（図示せず）を挿入係止して縦バスバー３０をケース１１に固定している。前記基板部３１の他端に、Ｌ字状に屈曲して形成した電源線接続部３６を形成している。該電源線接続部３６に形成したボルト穴３７にボルト（図示せず）を通して電源線端末の端子と縦バスバー３０とを締結接続する。   The vertical bus bar 30 is provided with a locking hole 35 between one end in the extending direction of the substrate portion 31 and the two horizontal portions 32. A lance (not shown) formed on the wall in the case 11 is inserted and locked into the locking hole 35 to fix the vertical bus bar 30 to the case 11. At the other end of the substrate portion 31, a power line connecting portion 36 formed by bending in an L shape is formed. A terminal of the power line terminal and the vertical bus bar 30 are fastened and connected to a bolt hole 37 formed in the power line connecting part 36 through a bolt (not shown).

前記縦バスバー３０は、各ヒューズ接続用端子３３が、前記ヒューズ収容部１２の各入力端子用キャビティ１７の端子接続用空間２０内に下方からそれぞれ挿入されるようにケース１１に取り付けている。其の際、図４（Ｃ）に示すように、前記水平部３２に設けた係止穴３４にロック部２３の係止突部２５を挿入して、水平部３２をヒューズ収容部１２の下方にロック係止している。   The vertical bus bar 30 is attached to the case 11 such that each fuse connection terminal 33 is inserted into the terminal connection space 20 of each input terminal cavity 17 of the fuse accommodating portion 12 from below. At that time, as shown in FIG. 4C, the locking protrusions 25 of the lock portion 23 are inserted into the locking holes 34 provided in the horizontal portion 32, and the horizontal portion 32 is located below the fuse housing portion 12. The lock is locked.

詳細には、前記係止突部２５のテーパ部２５ａによって一対の突起部２４が互いに近接する方向に撓みながら前記縦バスバー３０の係止穴３４に挿入される。挿入が完了すると、前記突起部２４が弾性復帰して、前記係止突部２５の段部２５ｂが係止穴３４の短辺側の周縁に係合する。   Specifically, the pair of protrusions 24 are inserted into the locking holes 34 of the vertical bus bar 30 while being bent in the direction of approaching each other by the taper portions 25 a of the locking protrusions 25. When the insertion is completed, the protruding portion 24 is elastically restored, and the step portion 25b of the locking projection 25 is engaged with the peripheral edge of the locking hole 34 on the short side.

前記中継端子５０は、図４（Ｃ）に示すように、ヒューズ収容部１２の入力端子用キャビテイ内に配置される。中継端子５０は、基板片５３と該基板片５３の下端から上方に向けて折り返した弾性片５４と、基板片５３の両側から弾性片５４を囲むようにコの字状に折り返した一対の当接片５７とからなる。弾性片５４は、略Ｓ字状に曲げられ、長さ方向中間部では前記基板片５３と反対側に膨らんだ第一接触点５５を設け、先端側では基板片５３側に湾曲して第二接触点５６を設けている。前記基板片５３と弾性片５４の先端は互いに離反する方向に屈曲しており、これによりヒューズ４０の入力端子４１を挿入しやすくしている。
中継端子５０を縦バスバー３０のヒューズ接続用端子３３に嵌合して、予めセットした状態で縦バスバー３０をケース５１に収容している。 As shown in FIG. 4C, the relay terminal 50 is disposed in the input terminal cavity of the fuse accommodating portion 12. The relay terminal 50 includes a pair of contact pieces folded in a U-shape so as to surround the elastic piece 54 from both sides of the board piece 53, the elastic piece 54 turned upward from the lower end of the board piece 53, and the board piece 53. And a contact piece 57. The elastic piece 54 is bent in a substantially S shape, and is provided with a first contact point 55 that swells on the opposite side to the substrate piece 53 at the middle in the length direction, and is bent toward the substrate piece 53 side at the tip side. A contact point 56 is provided. The tips of the substrate piece 53 and the elastic piece 54 are bent away from each other, thereby making it easy to insert the input terminal 41 of the fuse 40.
The relay terminal 50 is fitted to the fuse connection terminal 33 of the vertical bus bar 30, and the vertical bus bar 30 is accommodated in the case 51 in a preset state.

前記縦バスバー３０のヒューズ接続用端子３３は、前記中継端子５０の当接片５７と前記弾性片５４との間に下側から挿入され、該弾性片５４の前記第一接触点５５と当接片５７によって挟持される。前記ヒューズ４０の入力端子４１は、前記基板片５３と弾性片５４との間に上方から挿入され、前記基板片５３と弾性片５４の第二接触点５６とによって挟持される。これにより、縦バスバー３０のヒューズ接続用端子３３とヒューズ４０の入力端子４１とを、中継端子５０を介して電気接続させる。   The fuse connection terminal 33 of the vertical bus bar 30 is inserted between the contact piece 57 of the relay terminal 50 and the elastic piece 54 from below, and contacts the first contact point 55 of the elastic piece 54. It is clamped by the piece 57. The input terminal 41 of the fuse 40 is inserted from above between the substrate piece 53 and the elastic piece 54 and is sandwiched between the substrate piece 53 and the second contact point 56 of the elastic piece 54. Thereby, the fuse connection terminal 33 of the vertical bus bar 30 and the input terminal 41 of the fuse 40 are electrically connected via the relay terminal 50.

前記出力端子用キャビティ１８には、図４（Ｂ）に示すように、ワイヤハーネスの電線６０の端末に接続された端子６１が下方から挿入され、ヒューズ４０の出力端子４２と直接接続される。   As shown in FIG. 4B, a terminal 61 connected to the end of the wire 60 of the wire harness is inserted into the output terminal cavity 18 from below and directly connected to the output terminal 42 of the fuse 40.

前記構成の電気接続箱１０は、前記縦バスバー３０の水平部３２の下面側を絶縁板やケース１１で支持する構造ではないが、ヒューズ収容部１２から下向きに突設した前記ロック部２３で前記水平部３２をロック係止している。これにより、大容量ヒューズ４０の挿入時に、該ヒューズ４０の入力端子４１と接続される縦バスバー３０のヒューズ接続用端子３３と、該ヒューズ接続用端子３３と連続する前記水平部３２とが大きな挿入圧を受けても、前記水平部３２がロック部２３の係止段部２５ｂによって支持されて下方への沈み込みを防止できるため、該水平部３２の変形を防ぐことができる。   The electrical junction box 10 having the above configuration is not structured to support the lower surface side of the horizontal portion 32 of the vertical bus bar 30 with an insulating plate or the case 11, but the lock portion 23 projecting downward from the fuse housing portion 12. The horizontal portion 32 is locked and locked. Thereby, when the large capacity fuse 40 is inserted, the fuse connection terminal 33 of the vertical bus bar 30 connected to the input terminal 41 of the fuse 40 and the horizontal portion 32 continuous with the fuse connection terminal 33 are inserted large. Even when pressure is applied, the horizontal portion 32 is supported by the locking step portion 25b of the lock portion 23 and can be prevented from sinking downward, so that deformation of the horizontal portion 32 can be prevented.

本発明は前記実施形態に限定されず、ヒューズ接続用端子はヒューズの入力端子が直接接続可能な圧入スロットを切り欠いた音叉状タブとして、中継端子を用いない構成としてもよい。   The present invention is not limited to the above-described embodiment, and the fuse connection terminal may be configured as a tuning fork-like tab in which a press-fit slot that can be directly connected to the input terminal of the fuse is not used, and a relay terminal is not used.

第一実施形態に係る電気接続箱を下面側からみた分解斜視図である。It is the disassembled perspective view which looked at the electrical junction box which concerns on 1st embodiment from the lower surface side. 図１に示すケースの要部構造説明図である。It is principal part structure explanatory drawing of the case shown in FIG. 図１に示すロック部の拡大斜視図である。It is an expansion perspective view of the lock part shown in FIG. ヒューズ収容部を示し、（Ａ）は平面図、（Ｂ）は（Ａ）のＢ−Ｂ線説明断面図、（Ｃ）は（Ｂ）のＣ−Ｃ線拡大断面図、（Ｄ）は中継端子の斜視図である。The fuse accommodating part is shown, (A) is a plan view, (B) is a sectional view taken along the line BB of (A), (C) is an enlarged sectional view taken along the line CC of (B), and (D) is a relay. It is a perspective view of a terminal. 従来例を示す図である。It is a figure which shows a prior art example. 従来の問題点を示す図である。It is a figure which shows the conventional problem.

符号の説明Explanation of symbols

１０ 電気接続箱
１１ ケース
１２ ヒューズ収容部
１４ 底壁
２３ ロック部
２５ 係止突部
３０ 縦バスバー
３１ 基板部
３２ 水平部
３３ ヒューズ接続用端子
３４ 係止穴
４０ ヒューズ
４１ 入力端子
５０ 中継端子 DESCRIPTION OF SYMBOLS 10 Electrical connection box 11 Case 12 Fuse accommodating part 14 Bottom wall 23 Lock part 25 Locking protrusion 30 Vertical bus bar 31 Board | substrate part 32 Horizontal part 33 Fuse connection terminal 34 Locking hole 40 Fuse 41 Input terminal 50 Relay terminal

Claims (2)

ケース内部に縦バスバーを収容していると共に、該ケースに設けたヒューズ収容部に差し込まれるヒューズと前記縦バスバーに設けたヒューズ接続用端子とを電気接続している電気接続箱において、
前記縦バスバーに折り曲げて形成した水平部に前記ヒューズ接続用端子を設け、
前記ヒューズ収容部の下方に前記縦バスバーの前記水平部を支持するロック部を設けていることを特徴とする電気接続箱。 In the electrical connection box that houses the vertical bus bar inside the case, and electrically connects the fuse inserted into the fuse housing part provided in the case and the fuse connection terminal provided in the vertical bus bar,
Provide the fuse connection terminal in a horizontal portion formed by bending the vertical bus bar,
An electrical junction box, wherein a lock portion for supporting the horizontal portion of the vertical bus bar is provided below the fuse housing portion. 前記ロック部は、ヒューズ収容部の底壁から突設され、係止突部を有する一対の突起部からなり、前記縦バスバーの前記水平部には、前記ロック部が挿入係止される係止穴を設けている請求項１に記載の電気接続箱。   The lock portion is formed of a pair of protrusions protruding from the bottom wall of the fuse housing portion and having locking protrusions, and the horizontal portion of the vertical bus bar is locked so that the lock portion is inserted and locked The electrical junction box according to claim 1, wherein a hole is provided.
JP2008226383A 2008-09-03 2008-09-03 Electrical junction box Expired - Fee Related JP5141451B2 (en)

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