JP2023045995A - Terminal connection structure of electric connection box - Google Patents

Terminal connection structure of electric connection box Download PDF

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JP2023045995A
JP2023045995A JP2021154655A JP2021154655A JP2023045995A JP 2023045995 A JP2023045995 A JP 2023045995A JP 2021154655 A JP2021154655 A JP 2021154655A JP 2021154655 A JP2021154655 A JP 2021154655A JP 2023045995 A JP2023045995 A JP 2023045995A
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terminal
connection structure
electric
terminal connection
conductive member
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雅利 江川
Masatoshi Egawa
潤 下津佐
Jun Shimotsusa
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Yazaki Corp
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract

To provide a terminal connection structure of an electric connection box excellent in heat dissipation of a terminal.SOLUTION: A terminal connection structure 100 of an electric connection box is a connection structure of a conductive member B and a terminal 2 of an electric connection box that accommodates a block 6 for holding an electronic component R, and comprises: the conductive member B that is assembled to the block 6 and electrically connected with the electronic component R; the terminal 2 that is connected with one end of an electric wire 4 and electrically connected with the conductive member B; and a heat dissipation member 3 that is arranged between the conductive member B and the terminal 2.SELECTED DRAWING: Figure 6

Description

本発明は、電気接続箱の端子接続構造に関する。 The present invention relates to a terminal connection structure for an electrical connection box.

従来から、車両に搭載されるとともにリレーやヒューズ等の電子部品が収容される収容空間を有するリレーボックスやヒューズボックス等の電気接続箱(以下、「従来電気接続箱」ともいう。)が提案されている。従来電気接続箱の一つは、電気接続箱に収容されて且つ電子部品を保持するブロックに、電子部品と電気的に接続されるバスバ等の導電部材が組み付けられている。そして、電源供給用等の電線が接続された端子が、導電部材に接続されている(例えば、特許文献1を参照。)。 BACKGROUND ART Conventionally, electrical connection boxes such as relay boxes and fuse boxes (hereinafter also referred to as "conventional electrical connection boxes") that are mounted on a vehicle and have a housing space for housing electronic components such as relays and fuses have been proposed. ing. One of the conventional electrical junction boxes has a block that is housed in the electrical junction box and holds electronic components, and a conductive member such as a bus bar that is electrically connected to the electronic components is assembled. A terminal to which an electric wire for power supply is connected is connected to the conductive member (see, for example, Patent Document 1).

特開2010-28919号公報JP 2010-28919 A

ところで、従来電気接続箱の導電部材と端子との接続構造では、端子が電源等に接続されていると、通電時において、端子における導電部材との接続箇所は高温になりやすい。これにより、導電部材と端子との接触抵抗が増して、端子の温度が更に上昇するとともに、導電部材と端子との電気接続の信頼性が低下する懸念があった。 By the way, in the connection structure between the conductive member and the terminal of the conventional electric junction box, if the terminal is connected to a power supply or the like, the connection point between the terminal and the conductive member tends to become hot when the electric current is supplied. As a result, there is a concern that the contact resistance between the conductive member and the terminal will increase, the temperature of the terminal will further rise, and the reliability of the electrical connection between the conductive member and the terminal will decrease.

ほかにも、例えば電線と端子とが圧着接続されている場合には、端子の高温化に伴って、電線を圧着している圧着部に緩みが生じるおそれもあった。圧着部に緩みが生じてしまうと、電線と端子との電気接続部の信頼性が低下してしまう。 In addition, for example, when a wire and a terminal are crimped to each other, there is a possibility that the crimping portion crimping the wire may loosen as the temperature of the terminal rises. Looseness in the crimped portion reduces the reliability of the electrical connection between the wire and the terminal.

本発明は、上述した状況を鑑みてなされたものであり、その目的は、端子の放熱性に優れる電気接続箱の端子接続構造を提供することにある。 SUMMARY OF THE INVENTION An object of the present invention is to provide a terminal connection structure for an electric connection box that is excellent in heat dissipation of the terminals.

前述した目的を達成するために、本発明に係る電気接続箱の端子接続構造は、下記を特徴としている。 In order to achieve the above object, the terminal connection structure of the electric junction box according to the present invention is characterized as follows.

電子部品を保持するブロックが収容された電気接続箱の端子接続構造であって、
前記ブロックに組み付けられて、前記電子部品と電気的に接続される導電部材と、
電線の一端が接続されるとともに、前記導電部材と電気的に接続される端子と、
前記導電部材と前記端子との間に配置される放熱部材と、を備える、
電気接続箱の端子接続構造であること。
A terminal connection structure for an electrical junction box containing blocks holding electronic components,
a conductive member assembled to the block and electrically connected to the electronic component;
a terminal to which one end of an electric wire is connected and which is electrically connected to the conductive member;
a heat dissipation member disposed between the conductive member and the terminal;
It shall be the terminal connection structure of the electrical connection box.

本発明に係る電気接続箱の端子接続構造について以下に述べる。
一般に、電気接続箱の導電部材と端子とが接続されると、通電時において、端子における導電部材との接続箇所は高温になりやすい。しかしながら、本構成の電気接続箱の端子接続構造は、電気接続箱のブロックに組み付けられた導電部材と、電線の一端が接続される端子と、の間に放熱部材が配置されている。これにより、通電時において端子に生じた熱は、放熱部材に伝わって放熱される。この結果、本構成の電気接続箱の端子接続構造では、放熱部材によって端子の発熱や温度上昇が抑制される。
The terminal connection structure of the electrical connection box according to the present invention will be described below.
In general, when a conductive member of an electric junction box is connected to a terminal, the temperature of the connection between the terminal and the conductive member is likely to be high during energization. However, in the terminal connection structure of the electrical junction box of this configuration, the heat radiating member is arranged between the conductive member assembled to the block of the electrical junction box and the terminal to which one end of the electric wire is connected. As a result, the heat generated in the terminal during the energization is transferred to the heat radiating member and radiated. As a result, in the terminal connection structure of the electrical connection box of this configuration, the heat dissipation member suppresses the heat generation and temperature rise of the terminals.

このように、本構成の電気接続箱の端子接続構造は、従来電気接続箱の端子接続構造に比べて、放熱性に優れている。 As described above, the terminal connection structure of the electric connection box of this configuration is superior in heat dissipation compared to the terminal connection structure of the conventional electric connection box.

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

図1は、本発明の実施形態に係る電気接続箱の斜視図である。FIG. 1 is a perspective view of an electric connection box according to an embodiment of the invention. 図2は、図1に示す電気接続箱の分解斜視図である。2 is an exploded perspective view of the electric junction box shown in FIG. 1. FIG. 図3は、本発明の実施形態に係る電気接続箱の端子接続構造の斜視図である。FIG. 3 is a perspective view of the terminal connection structure of the electric connection box according to the embodiment of the present invention. 図4は、図3に示す電気接続箱の端子接続構造の正面図である。4 is a front view of the terminal connection structure of the electrical junction box shown in FIG. 3. FIG. 図5は、図3に示す電気接続箱の端子接続構造の要部分解斜視図である。FIG. 5 is an exploded perspective view of the main parts of the terminal connection structure of the electric connection box shown in FIG. 図6は、図4のA-A断面図である。FIG. 6 is a cross-sectional view taken along line AA of FIG. 図7は、図3に示す放熱部材の斜視図である。7 is a perspective view of the heat radiating member shown in FIG. 3. FIG.

<実施形態>
以下、図面を参照しながら、図1及び図2に示す本発明の実施形態に係る電気接続箱1と図3~図6に示す端子2との接続構造(電気接続箱の端子接続構造100)について説明する。
<Embodiment>
Hereinafter, with reference to the drawings, a connection structure between the electrical junction box 1 according to the embodiment of the present invention shown in FIGS. 1 and 2 and the terminal 2 shown in FIGS. will be explained.

以下、説明の便宜上、図1~図6に示すように、「前」、「後」、「左」、「右」、「上」及び「下」を定義する。「前後方向」、「左右方向」及び「上下方向」は、互いに直交している。電気接続箱1の車両搭載時において、「前後方向」、「左右方向」及び「上下方向」は、それぞれ、車両の前後方向、左右方向及び上下方向に対応している。また、電気接続箱1の内部に面する側を「内」側と呼び、電気接続箱1の外部に面する側を「外」側と呼ぶ。 Hereinafter, for convenience of explanation, "front", "rear", "left", "right", "upper" and "lower" are defined as shown in FIGS. The "front-rear direction", the "left-right direction" and the "up-down direction" are orthogonal to each other. When the electrical connection box 1 is mounted on a vehicle, the terms "front-rear direction", "left-right direction" and "up-down direction" correspond to the front-rear direction, left-right direction and up-down direction of the vehicle, respectively. In addition, the side facing the inside of the electrical junction box 1 is called the "inner" side, and the side facing the outside of the electrical junction box 1 is called the "outer" side.

電気接続箱1は、典型的には、車両に搭載され、電気接続箱の端子接続構造100は、ヒューズやリレー等の電子部品やその他の部品である部品R(図2参照)を保持するブロック6が収容された電気接続箱1と、ブロック6に組み付けられて部品Rと電気的に接続されるバスバBと、電線4の一端が接続されるとともにバスバBと電気的に接続される端子2と、バスバBと端子2との間に配置される放熱部材3と、により構成される。なお、バスバBは、本発明の導電部材に対応している。以下、電気接続箱の端子接続構造100を構成する各部品の構成について順に説明する。 The electrical junction box 1 is typically mounted on a vehicle, and the terminal connection structure 100 of the electrical junction box is a block that holds parts R (see FIG. 2), which are electronic parts such as fuses and relays and other parts. 6, a busbar B assembled to the block 6 and electrically connected to the component R, and a terminal 2 to which one end of the electric wire 4 is connected and electrically connected to the busbar B. , and a heat radiating member 3 arranged between the bus bar B and the terminal 2 . In addition, the bus bar B corresponds to the conductive member of the present invention. The configuration of each component constituting the terminal connection structure 100 of the electrical connection box will be described below in order.

まず、電気接続箱1について説明する。図1及び図2に示すように、電気接続箱1は、フレーム11と、フレーム11の下端開口を塞ぐようにフレーム11の下方に組み付けられるロアカバー12と、フレーム11の上端開口を塞ぐようにフレーム11の上方に組み付けられるアッパカバー13と、により構成される。電気接続箱1を構成する上記3つの部品は全て、樹脂成形体である。 First, the electric connection box 1 will be explained. As shown in FIGS. 1 and 2, the electrical connection box 1 includes a frame 11, a lower cover 12 assembled under the frame 11 so as to close the lower end opening of the frame 11, and a frame assembly so as to close the upper end opening of the frame 11. and an upper cover 13 assembled above 11 . All of the above three parts constituting the electrical junction box 1 are resin moldings.

電気接続箱1では、電気接続箱1の内部に位置する部品Rの一部に電気的に接続される電線(図示省略)が、電気接続箱1の前方右部に設けられた電線引出孔14を介して、電気接続箱1の外部へと導出される。なお、電気接続箱1の前後方向の中央左部や後方左部に設けられた電線引出孔14についても同様である。以下、電気接続箱1を構成するフレーム11、ロアカバー12、及びアッパカバー13について順に説明する。 In the electric junction box 1, an electric wire (not shown) electrically connected to a part of the component R located inside the electric junction box 1 extends through a wire lead-out hole 14 provided in the front right portion of the electric junction box 1. is led to the outside of the electric connection box 1 through the . The same applies to the wire outlet holes 14 provided in the central left portion and the rear left portion of the electrical connection box 1 in the front-rear direction. The frame 11, the lower cover 12, and the upper cover 13, which constitute the electric connection box 1, will be described in order below.

はじめに、フレーム11について説明する。図1及び図2に示すように、フレーム11は、上下方向に延びる略矩形筒状の側壁部111を備える。側壁部111は、電気接続箱1の側面の外観の大部分を構成する。 First, the frame 11 will be explained. As shown in FIGS. 1 and 2, the frame 11 includes a substantially rectangular cylindrical side wall portion 111 extending vertically. The side wall portion 111 constitutes most of the appearance of the side surface of the electric connection box 1 .

側壁部111の下端部における周方向の複数箇所(本例では、8箇所)の外面には、それぞれ、上下方向に延びる貫通孔を含む被係止部112が一体に設けられている(図1~図2参照)。被係止部112は、ロアカバー12をフレーム11に組み付ける機能を有する。 Engaged portions 112 each including a vertically extending through-hole are provided integrally with the outer surface of the lower end portion of the side wall portion 111 at a plurality of locations (eight locations in this example) in the circumferential direction (see FIG. 1). ~ see Figure 2). The locked portion 112 has a function of assembling the lower cover 12 to the frame 11 .

側壁部111の上端部における周方向の複数箇所(本例では、3箇所)の外面には、それぞれ、被係止部113が一体に設けられている。被係止部113は、アッパカバー13をフレーム11に組み付ける機能を有する。 Locked portions 113 are integrally provided on the outer surface of the upper end portion of the side wall portion 111 at a plurality of locations (three locations in this example) in the circumferential direction. The engaged portion 113 has a function of assembling the upper cover 13 to the frame 11 .

側壁部111における電線引出孔14(図1参照)に対応する箇所には、下方に開口する半円筒状の樋状部114が、右下方向に斜めに延びるように設けられている(図2参照)。樋状部114は、電線引出孔14を画成する内壁の上側部分を構成する機能を有する。なお、電気接続箱1の前後方向の中央左部や後方左部に設けられた電線引出孔14についても同様である。 A semi-cylindrical gutter-shaped portion 114 that opens downward is provided so as to extend obliquely to the lower right at a portion of the side wall portion 111 corresponding to the wire outlet hole 14 (see FIG. 1) (see FIG. 2). reference). The gutter-shaped portion 114 has a function of forming the upper portion of the inner wall that defines the wire outlet hole 14 . The same applies to the wire outlet holes 14 provided in the central left portion and the rear left portion of the electrical connection box 1 in the front-rear direction.

側壁部111の下端部における周方向の複数箇所(本例では、2箇所)の外面には、それぞれ、下方に延びるステー部15が一体に設けられている。ステー部15は、その先端部を車両の搭載箇所に組み付けることで、フレーム11(即ち、電気接続箱1)を車両の搭載箇所に固定する機能を有する。 Stay portions 15 extending downward are integrally provided on the outer surface of the lower end portion of the side wall portion 111 at a plurality of locations (two locations in this example) in the circumferential direction. The stay portion 15 has a function of fixing the frame 11 (that is, the electric connection box 1) to a mounting location of the vehicle by assembling the tip portion thereof to the mounting location of the vehicle.

側壁部111の内部空間には、複数のブロック6が収容されている。ブロック6には複数の部品保持部61が設けられている。部品保持部61は、部品Rが上方から収容可能なように上方に開口した有底の略矩形筒状の形状を有する(特に図6参照)。 A plurality of blocks 6 are accommodated in the internal space of the side wall portion 111 . A plurality of component holding portions 61 are provided in the block 6 . The component holding portion 61 has a substantially rectangular cylindrical shape with a bottom opening upward so that the component R can be accommodated from above (see FIG. 6 in particular).

更に、ブロック6には、複数(本例では、3つ)の収容溝部62が設けられている。収容溝部62は、前方から後方に向けて窪み、溝底63を有する凹部である。加えて、収容溝部62は上壁を有して、収容溝部62の上端部は上壁によって塞がれて、収容溝部62の下端部は開口している。これにより、ブロック6が電気接続箱1に収容された際、収容溝部62の下端部は、電気接続箱1の内部空間と上下方向に連通するが、収容溝部62の上端部は内部空間と上下方向に連通しない。 Furthermore, the block 6 is provided with a plurality (three in this example) of housing grooves 62 . The accommodation groove portion 62 is a concave portion having a groove bottom 63 that is recessed from the front to the rear. In addition, the accommodation groove 62 has an upper wall, the upper end of the accommodation groove 62 is closed by the upper wall, and the lower end of the accommodation groove 62 is open. As a result, when the block 6 is accommodated in the electrical junction box 1, the lower end of the accommodation groove 62 communicates with the inner space of the electrical junction box 1 in the vertical direction, while the upper end of the accommodation groove 62 communicates vertically with the inner space. direction is not communicated.

更に、ブロック6には側壁部111に係止される複数(本例では、2つ)の係止部64が設けられている(図3~図6参照)。 Further, the block 6 is provided with a plurality of (two in this example) locking portions 64 that are locked to the side wall portion 111 (see FIGS. 3 to 6).

換言すると、ブロック6は、複数種類の複数の部品Rを保持する部品保持部61と、端子2及び放熱部材3を収容する収容溝部62と、側壁部111の内面に設けられた被係止部(図示省略)に係止される係止部64と、を含んで構成されている。 In other words, the block 6 includes a component holding portion 61 that holds a plurality of types of components R, an accommodation groove portion 62 that accommodates the terminals 2 and the heat radiating member 3, and a locked portion provided on the inner surface of the side wall portion 111. (not shown).

更に、ブロック6は、収容溝部62にて少なくとも一部が露出するようにバスバBが組み付けられている。バスバBは、部品保持部61にて保持される部品Rと電気的に接続される(特に図6参照)。なお、バスバBの露出される少なくとも一部には、ボルト7が挿通される孔部Hが含まれている。 Furthermore, the block 6 is assembled with the bus bar B so that at least a portion of the block 6 is exposed in the accommodation groove portion 62 . The busbar B is electrically connected to the component R held by the component holding portion 61 (see FIG. 6 in particular). At least a part of the bus bar B that is exposed includes a hole H through which the bolt 7 is inserted.

次に、ロアカバー12について説明する。図1及び図2に示すように、ロアカバー12は、電気接続箱1の下側側面の外観の大部分を構成する環状の側壁部121と、側壁部121の環状の下端開口を塞ぐとともに電気接続箱1の底面の外観の大部分を構成する底壁部122と、を一体に備える。側壁部121の環状の上端縁部は、フレーム11の側壁部111の環状の下端縁部に対応する形状を有し、側壁部111の環状の下端縁部と嵌合可能となっている。 Next, the lower cover 12 will be explained. As shown in FIGS. 1 and 2, the lower cover 12 closes an annular side wall portion 121 that constitutes most of the outer appearance of the lower side surface of the electric connection box 1, and an annular lower end opening of the side wall portion 121, while providing electrical connection. and a bottom wall portion 122 that constitutes most of the outer appearance of the bottom surface of the box 1. The annular upper edge portion of the side wall portion 121 has a shape corresponding to the annular lower edge portion of the side wall portion 111 of the frame 11 and is fittable with the annular lower edge portion of the side wall portion 111 .

側壁部121の上端部における周方向の複数箇所(本例では、8箇所)の外面には、それぞれ、フレーム11の複数の被係止部112に対応して、上方に延びる係止片123が一体に設けられている(図2参照)。 Locking pieces 123 extending upward corresponding to the plurality of locked portions 112 of the frame 11 are provided on the outer surface of the upper end portion of the side wall portion 121 at a plurality of locations (eight locations in this example) in the circumferential direction. It is integrally provided (see FIG. 2).

側壁部121における電線引出孔14(図1参照)に対応する箇所には、上方に開口する半円筒状の樋状部124が、右下方向に斜めに延びるように設けられている(図2参照)。樋状部124は、電線引出孔14を画成する内壁の後側部分を構成する機能を有する。なお、電気接続箱1の前後方向の中央左部や後方左部に設けられた電線引出孔14についても同様である。 A semi-cylindrical gutter-shaped portion 124 opening upward is provided so as to obliquely extend in the lower right direction at a portion of the side wall portion 121 corresponding to the wire outlet hole 14 (see FIG. 1) (see FIG. 2). reference). The gutter-shaped portion 124 has a function of forming the rear portion of the inner wall that defines the wire outlet hole 14 . The same applies to the wire outlet holes 14 provided in the central left portion and the rear left portion of the electrical connection box 1 in the front-rear direction.

次に、アッパカバー13について説明する。図1及び図2に示すように、アッパカバー13は、電気接続箱1の上側側面の外観の大部分を構成する環状の側壁部131と、側壁部131の環状の上端開口を塞ぐと共に電気接続箱1の上面の外観の大部分を構成する上壁部132と、を一体に備える。側壁部131の環状の下端縁部は、フレーム11の側壁部111の環状の上端縁部に対応する形状を有し、側壁部111の環状の上端縁部と嵌合可能となっている。 Next, the upper cover 13 will be explained. As shown in FIGS. 1 and 2, the upper cover 13 includes an annular side wall portion 131 that constitutes most of the outer appearance of the upper side surface of the electric connection box 1, and an annular upper end opening of the side wall portion 131 that closes and electrically connects. and an upper wall portion 132 that constitutes most of the outer appearance of the upper surface of the box 1. The annular lower edge portion of the side wall portion 131 has a shape corresponding to the annular upper edge portion of the side wall portion 111 of the frame 11 and is fittable with the annular upper edge portion of the side wall portion 111 .

側壁部131における周方向の複数箇所(本例では、3箇所)の外面には、それぞれ、フレーム11の複数の被係止部113に対応して、係止部133が一体に設けられている(図2参照)。 Locking portions 133 are integrally provided on the outer surface of the side wall portion 131 at a plurality of locations (three locations in this example) in the circumferential direction corresponding to the plurality of locked portions 113 of the frame 11 . (See Figure 2).

以上、電気接続箱1を構成するフレーム11、ロアカバー12、及びアッパカバー13について説明した。 The frame 11, the lower cover 12, and the upper cover 13 that constitute the electrical connection box 1 have been described above.

フレーム11、ロアカバー12、及びアッパカバー13からなる電気接続箱1を組み付けるためには、フレーム11にロアカバー12、及びアッパカバー13を組み付ける必要がある。 In order to assemble the electric connection box 1 composed of the frame 11 , the lower cover 12 and the upper cover 13 , it is necessary to assemble the lower cover 12 and the upper cover 13 to the frame 11 .

フレーム11にロアカバー12を組み付けるためには、まず、ロアカバー12の複数の係止片123(図2参照)を、下方からフレーム11の被係止部112(図2参照)の複数の貫通孔にそれぞれ挿入し、この状態から、ロアカバー12の側壁部121の環状の上端縁部をフレーム11の側壁部111の環状の下端縁部に嵌合させ、且つ、複数の係止片123を複数の被係止部112に係止させる。これにより、フレーム11へのロアカバー12の組み付けが完了する(図1参照)。 In order to assemble the lower cover 12 to the frame 11, first, the locking pieces 123 (see FIG. 2) of the lower cover 12 are inserted into the through holes of the locked portion 112 (see FIG. 2) of the frame 11 from below. From this state, the annular upper edge portion of the side wall portion 121 of the lower cover 12 is fitted into the annular lower edge portion of the side wall portion 111 of the frame 11, and the plurality of locking pieces 123 are connected to the plurality of covers. It is made to be locked by the locking portion 112 . This completes the attachment of the lower cover 12 to the frame 11 (see FIG. 1).

同様に、フレーム11にアッパカバー13を組み付けるためには、アッパカバー13の側壁部131の環状の下端縁部をフレーム11の側壁部111の環状の上端縁部に嵌合させ、且つ、アッパカバー13の複数の係止部133をフレーム11の複数の被係止部113に係止させる。これにより、フレーム11へのアッパカバー13の組み付けが完了する(図1参照)。 Similarly, in order to assemble the upper cover 13 to the frame 11, the annular lower edge portion of the side wall portion 131 of the upper cover 13 is fitted into the annular upper edge portion of the side wall portion 111 of the frame 11, and the upper cover 13 is assembled. The plurality of locking portions 133 of 13 are locked to the plurality of locked portions 113 of the frame 11 . This completes the assembly of the upper cover 13 to the frame 11 (see FIG. 1).

複数の係止片123と複数の被係止部112との係止により、ロアカバー12がフレーム11から下方へ分離することが防止される。同様に、複数の係止部133と複数の被係止部113との係止により、アッパカバー13がフレーム11から上方へ分離することが防止される。 The locking of the plurality of locking pieces 123 and the plurality of locked portions 112 prevents the lower cover 12 from separating downward from the frame 11 . Similarly, the locking of the plurality of locking portions 133 and the plurality of locked portions 113 prevents the upper cover 13 from separating upward from the frame 11 .

更に、フレーム11の樋状部114と、ロアカバー12の樋状部124とにより(図2参照)、電線(図示省略)が挿通される電線引出孔14が画成されている(図1参照)。なお、電気接続箱1の前後方向の中央左部や後方左部に設けられた電線引出孔14についても同様である。以上、電気接続箱1について説明した。 Further, the gutter-shaped portion 114 of the frame 11 and the gutter-shaped portion 124 of the lower cover 12 (see FIG. 2) define an electric wire outlet hole 14 through which an electric wire (not shown) is inserted (see FIG. 1). . The same applies to the wire outlet holes 14 provided in the central left portion and the rear left portion of the electrical connection box 1 in the front-rear direction. The electrical connection box 1 has been described above.

次いで、端子2について説明する。図3~図6(特に図5)に示すように、端子2は、端子2の上方に位置するバスバ接続部21と、バスバ接続部21の下方に位置する電線接続部22と、とから構成されている。 Next, terminal 2 will be described. As shown in FIGS. 3 to 6 (especially FIG. 5), the terminal 2 is composed of a busbar connection portion 21 located above the terminal 2 and a wire connection portion 22 located below the busbar connection portion 21. It is

バスバ接続部21には、ボルト7が挿通される孔部23が設けられている。図3~図6に示すように、端子2は、孔部23にボルト7が挿通されて、バスバB及び後述する放熱部材3と締結・接続される丸形端子(いわゆるLA端子)である The busbar connecting portion 21 is provided with a hole portion 23 through which the bolt 7 is inserted. As shown in FIGS. 3 to 6, the terminal 2 is a round terminal (so-called LA terminal) that is fastened and connected to the bus bar B and a heat radiating member 3 to be described later by inserting the bolt 7 through the hole 23.

電線接続部22には、電線4の一端にて被覆42から露出された導体41が加締められている(特に図6参照)。これにより、端子2と電線4とが電気的に接続されている。なお、電線4の他端には、電源供給用の補機(例えば、バッテリ等)が接続されている。以上、端子2について説明した。 A conductor 41 exposed from a coating 42 at one end of the wire 4 is crimped to the wire connection portion 22 (see FIG. 6 in particular). Thereby, the terminal 2 and the electric wire 4 are electrically connected. The other end of the electric wire 4 is connected to an auxiliary device for power supply (for example, a battery, etc.). The terminal 2 has been described above.

次いで、放熱部材3について説明する。図5~図7に示すように、放熱部材3は、上下方向に延びる平板部31と、平板部31に設けられてボルト7が挿通される孔部32と、平板部31から後方に向けて突設する複数の放熱フィン33と、を有している。 Next, the heat dissipation member 3 will be described. As shown in FIGS. 5 to 7, the heat radiating member 3 includes a flat plate portion 31 extending in the vertical direction, a hole portion 32 provided in the flat plate portion 31 and through which the bolt 7 is inserted, and a hole extending rearward from the flat plate portion 31. and a plurality of projecting radiating fins 33 .

図6に示すように、孔部32は、平板部31の上方部分に設けられている。更に、図6及び図7に示すように、放熱部材3は、複数の放熱フィン33が、平板部31の上下方向の中央部から下端部までの間に複数設けられている。換言すると、放熱フィン33は、櫛状の形状を有している。加えて、放熱部材3は、平板部31の前面にて端子2との接触面積を確保するため、放熱フィン33がブロック6における収容溝部62の溝底63に向けて延びるように平板部31の後面に設けられている。 As shown in FIG. 6 , the hole 32 is provided in the upper portion of the flat plate portion 31 . Further, as shown in FIGS. 6 and 7, the heat dissipating member 3 has a plurality of heat dissipating fins 33 provided between the center portion in the vertical direction of the flat plate portion 31 and the lower end portion thereof. In other words, the radiation fins 33 have a comb-like shape. In addition, in order to secure a contact area with the terminals 2 on the front surface of the flat plate portion 31 , the heat dissipating member 3 is arranged such that the heat dissipating fins 33 extend toward the groove bottom 63 of the accommodating groove portion 62 in the block 6 . located on the rear side.

放熱部材3は、図6に示すようにバスバBと端子2との間に配置されるため導電性を有し、且つ、通電時における端子2の温度上昇を抑制すべく優れた放熱性を有する材料(例えば、アルミニウム等)から構成される。以上、放熱部材3について説明した。 As shown in FIG. 6, the heat radiating member 3 is arranged between the bus bar B and the terminal 2, so that it has electrical conductivity, and also has excellent heat radiation properties to suppress the temperature rise of the terminal 2 when electricity is supplied. Constructed from a material (eg, aluminum, etc.). The heat dissipation member 3 has been described above.

以下、本発明の実施形態に係る電気接続箱の端子接続構造100について説明する。図3~図6に示すように、端子2は、電気接続箱1の内部空間に収容されるブロック6に組み付けられたバスバBに電気的に接続されている。 A terminal connection structure 100 for an electrical connection box according to an embodiment of the present invention will be described below. As shown in FIGS. 3 to 6, the terminal 2 is electrically connected to a busbar B assembled to a block 6 housed in the inner space of the electric connection box 1. As shown in FIGS.

はじめに、バスバBへの端子2及び放熱部材3の締結・接続について説明する。図5に示すように、バスバBと端子2との間に放熱部材3が位置するように、端子2及び放熱部材3を配置する。そして、バスバBの孔部Hに対応するように、放熱部材3の孔部32及び端子2の孔部23を配置し、ボルト7を孔部23、孔部32、及び孔部Hに挿通させる。そして、ブロック6に設けられたナット8の孔部にボルト7を挿通させて、バスバB、放熱部材3、及び端子2を一括して締結する(図6参照)。これにより、バスバB及び端子2は、電気的に接続される。 First, fastening/connection of the terminal 2 and the heat dissipation member 3 to the bus bar B will be described. As shown in FIG. 5, the terminals 2 and the heat radiating member 3 are arranged so that the heat radiating member 3 is positioned between the bus bar B and the terminal 2 . Then, the hole 32 of the heat radiating member 3 and the hole 23 of the terminal 2 are arranged so as to correspond to the hole H of the busbar B, and the bolt 7 is inserted through the hole 23, the hole 32, and the hole H. . Then, the bolt 7 is inserted through the hole of the nut 8 provided in the block 6, and the bus bar B, the heat radiating member 3, and the terminal 2 are collectively fastened (see FIG. 6). Thereby, the bus bar B and the terminal 2 are electrically connected.

ところで、一般に、上述したように端子2に接続された電線4の他端が電源供給用の補機に接続されていると、通電時において、端子2(特にバスバBとの接続箇所であるバスバ接続部21)の温度が上昇しやすく、それに伴い端子2は高温になりやすい。 By the way, in general, when the other end of the electric wire 4 connected to the terminal 2 is connected to an auxiliary device for power supply as described above, the terminal 2 (particularly, the bus bar which is the connection point with the bus bar B) will be The temperature of the connecting part 21) tends to rise, and the temperature of the terminal 2 tends to rise accordingly.

しかしながら、本実施形態に係る電機接続箱の端子接続構造100では、端子2に生じた熱は、放熱部材3の平板部31に伝わり、平板部31から放熱フィン33に伝わって放熱されて、収容溝部62の下方からブロック6(具体的には、収容溝部62)の外部へと放熱される。 However, in the terminal connection structure 100 of the electric junction box according to the present embodiment, the heat generated in the terminal 2 is transferred to the flat plate portion 31 of the heat dissipation member 3, is transferred from the flat plate portion 31 to the heat dissipation fins 33, is dissipated, and is housed. Heat is radiated from below the groove portion 62 to the outside of the block 6 (specifically, the accommodation groove portion 62).

つまり、バスバB及び端子2が放熱部材3を挟んで電気的に接続されているため、放熱部材3によって端子2の発熱や温度上昇が抑制される。これにより、バスバBと端子2との接触抵抗の増大が抑制され、ひいてはバスバBと端子2との電気接続の信頼性の低下が抑制される。 That is, since the bus bar B and the terminal 2 are electrically connected with the heat radiating member 3 interposed therebetween, the heat radiating member 3 suppresses heat generation and temperature rise of the terminal 2 . As a result, an increase in contact resistance between the busbar B and the terminal 2 is suppressed, and a decrease in reliability of electrical connection between the busbar B and the terminal 2 is suppressed.

このように、本実施形態に係る電気接続箱の端子接続構造100は、従来電気接続箱の端子接続構造に比べて、放熱性に優れている。 As described above, the terminal connection structure 100 for an electric junction box according to the present embodiment is superior in heat dissipation compared to the conventional terminal connection structure for an electric junction box.

なお、放熱は、必ずしも放熱フィン33からされるものではなく、平板部31から放熱されてもよい。 It should be noted that the heat is not necessarily emitted from the heat dissipation fins 33 , and the heat may be dissipated from the flat plate portion 31 .

<作用・効果>
本実施形態に係る電気接続箱の端子接続構造100によれば、放熱部材3がバスバBと端子2との間に配置されている。これにより、通電時において端子2に生じた熱は、放熱部材3に伝わって放熱される。この結果、本実施形態に係る電気接続箱の端子接続構造100では、放熱部材3によって端子2の発熱や温度上昇が抑制される。
<Action/effect>
According to the terminal connection structure 100 of the electrical connection box according to the present embodiment, the heat dissipation member 3 is arranged between the bus bar B and the terminal 2 . As a result, the heat generated in the terminal 2 during energization is transmitted to the heat radiating member 3 and radiated. As a result, in the terminal connection structure 100 for the electrical connection box according to the present embodiment, the heat dissipation member 3 suppresses the heat generation and temperature rise of the terminals 2 .

更に、本実施形態に係る電気接続箱の端子接続構造100によれば、孔部23、孔部32、及び孔部Hにボルト7が挿通されて、バスバB、放熱部材3、及び端子2が一括して締結される。このように、本実施形態に係る電気接続箱の端子接続構造100は、バスバBに端子2及び放熱部材3を接続する作業が容易であり、作業性に優れている。 Furthermore, according to the terminal connection structure 100 for the electrical connection box according to the present embodiment, the bolts 7 are inserted through the holes 23, 32, and H to connect the bus bars B, the heat radiating member 3, and the terminals 2. It is concluded collectively. As described above, the terminal connection structure 100 for an electric connection box according to the present embodiment facilitates the work of connecting the terminals 2 and the heat radiating member 3 to the bus bar B, and is excellent in workability.

更に、本実施形態に係る電気接続箱の端子接続構造100によれば、放熱部材3は複数の放熱フィン33を有している。これにより、本実施形態に係る電気接続箱の端子接続構造100は、複数の放熱フィン33によって放熱部材3の表面積が増大し、放熱性が更に高くなる。 Furthermore, according to the terminal connection structure 100 of the electric connection box according to the present embodiment, the heat dissipation member 3 has a plurality of heat dissipation fins 33 . As a result, the terminal connection structure 100 for the electrical connection box according to the present embodiment has the plurality of heat radiation fins 33 to increase the surface area of the heat radiation member 3, thereby further enhancing the heat radiation performance.

更に、本実施形態に係る電気接続箱の端子接続構造100によれば、ブロック6は端子2及び放熱部材3を収容する収容溝部62を有し、放熱フィン33は、収容溝部62の溝底63に向けて延びるように構成されている。これにより、本実施形態に係る電気接続箱の端子接続構造100は、ブロック6の大型化を抑制し、ひいてはブロック6の小型化を図ることができる。 Furthermore, according to the terminal connection structure 100 for an electric junction box according to the present embodiment, the block 6 has the housing groove portion 62 for housing the terminals 2 and the heat radiating member 3, and the heat radiating fins 33 are located at the groove bottom 63 of the housing groove portion 62. is configured to extend toward the As a result, the terminal connection structure 100 for an electric junction box according to the present embodiment can suppress the block 6 from increasing in size, and thus the size of the block 6 can be reduced.

<他の形態>
なお、本発明は、上述した実施形態に限定されるものではなく、適宜、変形、改良、等が可能である。その他、上述した実施形態における各構成要素の材質、形状、寸法、数、配置箇所、等は本発明を達成できるものであれば任意であり、限定されない。
<Other forms>
It should be noted that the present invention is not limited to the above-described embodiments, and can be modified, improved, etc. as appropriate. In addition, the material, shape, size, number, location, etc. of each component in the above-described embodiment are arbitrary and not limited as long as the present invention can be achieved.

ここで、上述した本発明に係る電気接続箱の端子接続構造の実施形態の特徴をそれぞれ以下[1]~[4]に簡潔に纏めて列記する。
[1]
電子部品(部品R)を保持するブロック(6)が収容された電気接続箱の端子接続構造(100)であって、
前記ブロック(6)に組み付けられて、前記電子部品(部品R)と電気的に接続される導電部材(バスバB)と、
電線(4)の一端が接続されるとともに、前記導電部材(バスバB)と電気的に接続される端子(2)と、
前記導電部材(バスバB)と前記端子(2)との間に配置される放熱部材(3)と、を備える、
電気接続箱の端子接続構造(100)。
[2]
上記[1]に記載の電気接続箱の端子接続構造(100)において、
締結部材(ボルト7)を更に備え、
前記導電部材(バスバB)に設けられた孔部(H)と、前記放熱部材(3)に設けられた孔部(32)と、前記端子(2)に設けられた孔部(23)に前記締結部材(ボルト7)が挿通されて、前記導電部材(バスバB)、前記放熱部材(3)、及び、前記端子(2)が一括して締結される、
電気接続箱の端子接続構造(100)。
[3]
上記[1]又は上記[2]に記載の電気接続箱の端子接続構造(100)において、
前記放熱部材(3)は、複数の放熱フィン(33)を有する、
電気接続箱の端子接続構造(100)。
[4]
上記[3]に記載の電気接続箱の端子接続構造(100)において、
前記ブロック(6)は、
前記端子(2)及び前記放熱部材(3)を収容する収容溝部(62)を有し、
前記複数の放熱フィン(33)は、
前記収容溝部(62)の溝底(63)に向けて延びる、
電気接続箱の端子接続構造(100)。
Here, the features of the embodiments of the terminal connection structure of the electrical connection box according to the present invention described above are briefly listed in [1] to [4] below.
[1]
A terminal connection structure (100) for an electric junction box containing a block (6) holding an electronic component (component R),
a conductive member (bus bar B) assembled to the block (6) and electrically connected to the electronic component (component R);
a terminal (2) to which one end of an electric wire (4) is connected and electrically connected to the conductive member (bus bar B);
A heat dissipation member (3) arranged between the conductive member (bus bar B) and the terminal (2),
A terminal connection structure (100) for an electrical junction box.
[2]
In the terminal connection structure (100) for the electrical junction box described in [1] above,
Further comprising a fastening member (bolt 7),
A hole (H) provided in the conductive member (bus bar B), a hole (32) provided in the heat dissipation member (3), and a hole (23) provided in the terminal (2) The fastening member (bolt 7) is inserted to collectively fasten the conductive member (bus bar B), the heat radiating member (3), and the terminal (2).
A terminal connection structure (100) for an electrical junction box.
[3]
In the terminal connection structure (100) for the electrical connection box according to [1] or [2] above,
The heat dissipation member (3) has a plurality of heat dissipation fins (33),
A terminal connection structure (100) for an electrical connection box.
[4]
In the terminal connection structure (100) for the electrical junction box described in [3] above,
Said block (6) comprises:
having a housing groove (62) housing the terminal (2) and the heat radiating member (3);
The plurality of radiating fins (33) are
extending toward the groove bottom (63) of the accommodation groove (62);
A terminal connection structure (100) for an electrical connection box.

1 電気接続箱
2 端子
3 放熱部材
4 電線
6 ブロック
7 ボルト(締結部材)
8 ナット
11 フレーム
12 ロアカバー
13 アッパカバー
23 孔部
32 孔部
33 放熱フィン
62 収容溝部
63 溝底
100 端子接続構造
B バスバ(導電部材)
H 孔部
R 部品(電子部品)
REFERENCE SIGNS LIST 1 electric junction box 2 terminal 3 heat radiation member 4 electric wire 6 block 7 bolt (fastening member)
8 Nut 11 Frame 12 Lower Cover 13 Upper Cover 23 Hole 32 Hole 33 Radiation Fin 62 Accommodating Groove 63 Groove Bottom 100 Terminal Connection Structure B Bus Bar (Conductive Member)
H hole R component (electronic component)

Claims (4)

電子部品を保持するブロックが収容された電気接続箱の端子接続構造であって、
前記ブロックに組み付けられて、前記電子部品と電気的に接続される導電部材と、
電線の一端が接続されるとともに、前記導電部材と電気的に接続される端子と、
前記導電部材と前記端子との間に配置される放熱部材と、を備える、
電気接続箱の端子接続構造。
A terminal connection structure for an electrical junction box containing blocks holding electronic components,
a conductive member assembled to the block and electrically connected to the electronic component;
a terminal to which one end of an electric wire is connected and which is electrically connected to the conductive member;
a heat dissipation member disposed between the conductive member and the terminal;
Terminal connection structure for electric connection box.
請求項1に記載の電気接続箱の端子接続構造において、
締結部材を更に備え、
前記導電部材に設けられた孔部と、前記放熱部材に設けられた孔部と、前記端子に設けられた孔部に前記締結部材が挿通されて、前記導電部材、前記放熱部材、及び、前記端子が一括して締結される、
電気接続箱の端子接続構造。
In the terminal connection structure of the electric junction box according to claim 1,
further comprising a fastening member;
The fastening member is inserted through a hole provided in the conductive member, a hole provided in the heat radiating member, and a hole provided in the terminal, so that the conductive member, the heat radiating member, and the The terminals are fastened together,
Terminal connection structure for electric connection box.
請求項1又は請求項2に記載の電気接続箱の端子接続構造において、
前記放熱部材は、複数の放熱フィンを有する、
電気接続箱の端子接続構造。
In the terminal connection structure of the electric connection box according to claim 1 or claim 2,
The heat dissipation member has a plurality of heat dissipation fins,
Terminal connection structure for electric connection box.
請求項3に記載の電気接続箱の端子接続構造において、
前記ブロックは、
前記端子及び前記放熱部材を収容する収容溝部を有し、
前記複数の放熱フィンは、
前記収容溝部の溝底に向けて延びる、
電気接続箱の端子接続構造。
In the terminal connection structure of the electrical junction box according to claim 3,
The block is
Having a housing groove for housing the terminal and the heat radiation member,
The plurality of heat radiation fins are
extending toward the groove bottom of the housing groove,
Terminal connection structure for electric connection box.
JP2021154655A 2021-09-22 2021-09-22 Terminal connection structure of electric connection box Pending JP2023045995A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2021154655A JP2023045995A (en) 2021-09-22 2021-09-22 Terminal connection structure of electric connection box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2021154655A JP2023045995A (en) 2021-09-22 2021-09-22 Terminal connection structure of electric connection box

Publications (1)

Publication Number Publication Date
JP2023045995A true JP2023045995A (en) 2023-04-03

Family

ID=85777138

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2021154655A Pending JP2023045995A (en) 2021-09-22 2021-09-22 Terminal connection structure of electric connection box

Country Status (1)

Country Link
JP (1) JP2023045995A (en)

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