JP6450246B2

JP6450246B2 - Electrical junction box

Info

Publication number: JP6450246B2
Application number: JP2015074507A
Authority: JP
Inventors: 中村　靖; 靖中村; 裕也瀬下; 慎介長濱; 広樹新田; 悟太田; 貞敏蔵楽
Original assignee: Fujikura Ltd
Current assignee: Fujikura Ltd
Priority date: 2015-03-31
Filing date: 2015-03-31
Publication date: 2019-01-09
Anticipated expiration: 2035-03-31
Also published as: JP2016195500A

Description

この発明は、放熱構造を有する電気接続箱に関する。 The present invention relates to an electrical junction box having a heat dissipation structure.

従来、電気接続箱の放熱構造として、ケース等に開口部を形成してケース内部の放熱を図ったものが知られている（引用文献１参照）。 2. Description of the Related Art Conventionally, a heat dissipation structure for an electrical junction box is known in which an opening is formed in a case or the like to dissipate heat inside the case (see Reference 1).

しかし、ケース内に制御基板等の制御基板が収容された電気接続箱では、ケースに開口部が形成されていると、開口部から侵入した異物（塵や埃、工具等）によって、制御基板に搭載されている電子部品の破壊や、回路の短絡が起こり、故障につながるといった問題点がある。 However, in an electrical junction box in which a control board such as a control board is housed in the case, if an opening is formed in the case, foreign matter (dust, dust, tools, etc.) that has entered through the opening will cause the control board to There are problems such as destruction of mounted electronic components and short circuit of the circuit, leading to failure.

一方、パチンコ等の遊戯機器の放熱構造として、ベースから立設された側壁（板状壁部）を開口部と間隔をあけて対向させることで、放熱用の開口部を外部から視認しにくくして工具等の異物侵入を防止する技術が提案されている（特許文献２参照）。 On the other hand, as a heat dissipation structure for game machines such as pachinko machines, the side wall (plate-shaped wall part) standing from the base is opposed to the opening part with a gap, making it difficult to see the opening part for heat radiation from the outside. A technique for preventing entry of foreign objects such as tools has been proposed (see Patent Document 2).

しかし、自動車のエンジンルーム内等の狭いスペースに配置されたり、運転席の足元等に配置される電気接続箱では、ベースから立設する側壁のエッジによって、周辺機器やケーブル等が傷付けられたり、乗員の足等が傷付けられる虞があるため、上記構造を採用することができない。 However, in an electrical junction box that is placed in a narrow space such as in the engine room of a car or at the foot of a driver's seat, peripheral devices or cables are damaged by the edge of the side wall standing from the base, The above structure cannot be adopted because there is a risk of occupant's feet being damaged.

特開２００７−２８２４０２号公報JP 2007-282402 A 特開２０１０−０８８９５０号公報JP 2010-088950 A

本発明は、上述した従来技術による問題点を解消するものであり、ケース内への異物の侵入を防止した放熱構造を持つ電気接続箱を提供することを目的とする。 An object of the present invention is to solve the above-described problems caused by the prior art and to provide an electrical junction box having a heat dissipation structure that prevents foreign matter from entering the case.

本発明に係る電気接続箱は、内部回路及びこれを収容する筐体を有する接続箱本体であって、前記筐体の一側面に形成された凹状部と、前記凹状部の周囲に対向配置される少なくとも２つの凸状部と、前記凹状部に設けられる基板装着部とを有する接続箱本体と、前記基板装着部に装着され、前記内部回路と電気的に接続される制御基板と、前記制御基板を覆うように前記凹状部に装着されるカバーであって、対向する２つの側面に開口部からなる放熱部を有するカバーとを備え、前記放熱部が前記凸状部と間隔をあけて対向配置されることを特徴とする。 An electrical junction box according to the present invention is a junction box main body having an internal circuit and a casing that accommodates the internal circuit, and is disposed so as to be opposed to a concave portion formed on one side of the casing and around the concave portion. A connection box body having at least two convex portions and a substrate mounting portion provided in the concave portion, a control substrate mounted on the substrate mounting portion and electrically connected to the internal circuit, and the control A cover mounted on the concave portion so as to cover the substrate, the cover having a heat radiating portion including openings on two opposing side surfaces, the heat radiating portion facing the convex portion with a space It is characterized by being arranged.

本発明に係る電気接続箱によれば、カバーの側面に形成された放熱部（開口部）によって放熱性を確保しつつ、この放熱部に対向配置される凸状部によって、放熱部（開口部）からの異物の侵入を防止できる。特に、接続箱本体の筐体の一側面に形成された凹状部にカバーを装着することにより、凹状部の周囲に配置される凸状部にカバーの開口部が対向配置されて開口部が外部から隠されるため、開口部の視認が非常に困難であり、工具等の異物侵入が防止できる。 According to the electrical junction box according to the present invention, the heat radiating portion (opening portion) is formed by the convex portion disposed opposite to the heat radiating portion while ensuring the heat radiation by the heat radiating portion (opening portion) formed on the side surface of the cover. ) Can prevent foreign material from entering. In particular, by attaching a cover to the concave part formed on one side of the casing of the junction box body, the opening of the cover is arranged opposite to the convex part arranged around the concave part, and the opening is external Therefore, it is very difficult to visually recognize the opening, and foreign objects such as tools can be prevented from entering.

本発明によれば、放熱性を犠牲にすることなく異物侵入による不具合の可能性を極力減らし、車両への搭載に適することができる。 According to the present invention, it is possible to reduce the possibility of malfunction due to the entry of a foreign substance as much as possible without sacrificing heat dissipation and to be suitable for mounting on a vehicle.

本発明の第１の実施形態に係る電気接続箱の外観を示す斜視図である。It is a perspective view showing the appearance of the electric junction box concerning a 1st embodiment of the present invention. 同電気接続箱を分解した斜視図である。It is the perspective view which decomposed | disassembled the same electrical junction box. 同電気接続箱の第１及び第２変形例の説明図である。It is explanatory drawing of the 1st and 2nd modification of the same electrical junction box. 同電気接続箱の第３及び第４変形例の説明図である。It is explanatory drawing of the 3rd and 4th modification of the same electrical junction box. 同電気接続箱の第５及び第６変形例の説明図である。It is explanatory drawing of the 5th and 6th modification of the same electrical junction box. 本発明の第２の実施形態に係る電気接続箱の放熱部周辺の断面図である。It is sectional drawing of the thermal radiation part periphery of the electrical junction box which concerns on the 2nd Embodiment of this invention. 本発明の第３の実施形態に係る電気接続箱の放熱部周辺の部分断面図である。It is a fragmentary sectional view around a heat radiating part of an electric junction box concerning a 3rd embodiment of the present invention. 同電気接続箱の第７乃至第１１変形例の説明図である。It is explanatory drawing of the 7th thru | or 11th modification of the same electrical junction box. 本発明の第４の実施形態に係る電気接続箱を分解した正面図である。It is the front view which decomposed | disassembled the electrical junction box which concerns on the 4th Embodiment of this invention. 本発明の第５の実施形態に係る電気接続箱を分解した側面図である。It is the side view which decomposed | disassembled the electrical junction box which concerns on the 5th Embodiment of this invention. 本発明の第６の実施形態に係る電気接続箱の接続箱本体の斜視図である。It is a perspective view of the junction box main part of the electrical junction box which concerns on the 6th Embodiment of this invention. 同電気接続箱のカバーの斜視図である。It is a perspective view of the cover of the same electrical junction box. 同電気接続箱のカバー内部の構造を説明する図である。It is a figure explaining the structure inside the cover of the electrical junction box. 同電気接続箱の効果を説明する図である。It is a figure explaining the effect of the same electrical junction box. 同電気接続箱のカバーの装着方法を説明する図である。It is a figure explaining the mounting method of the cover of the electrical junction box. 同電気接続箱のカバーの固定構造を説明する図である。It is a figure explaining the fixing structure of the cover of the same electrical junction box. 本発明の第７の実施形態に係る電気接続箱の放熱部周辺の断面図である。It is sectional drawing of the thermal radiation part periphery of the electrical junction box which concerns on the 7th Embodiment of this invention. 同電気接続箱の放熱部周辺の斜視図である。It is a perspective view of the heat dissipation part periphery of the same electrical junction box. 本発明の第４の実施形態に係る電気接続箱の放熱部周辺の断面図である。It is sectional drawing of the thermal radiation part periphery of the electrical junction box which concerns on the 4th Embodiment of this invention. 同電気接続箱の放熱部周辺の斜視図である。It is a perspective view of the heat dissipation part periphery of the same electrical junction box.

以下、図面を参照しながら本発明の実施形態に係る電気接続箱について説明する。 Hereinafter, an electrical junction box according to an embodiment of the present invention will be described with reference to the drawings.

［第１の実施形態］
先ず、本発明の第１の実施形態に係る電気接続箱の概要について図１及び図２を参照して説明する。 [First Embodiment]
First, the outline | summary of the electrical-connection box based on the 1st Embodiment of this invention is demonstrated with reference to FIG.1 and FIG.2.

図１は、本実施形態に係る電気接続箱１００の外観を示す斜視図であり、図２は、電気接続箱１００を分解した斜視図である。この電気接続箱１００は、ＥＣＵ等の制御基板２を備えるものであり、例えば、自動車等に搭載される。 FIG. 1 is a perspective view showing an external appearance of an electrical junction box 100 according to the present embodiment, and FIG. 2 is an exploded perspective view of the electrical junction box 100. The electrical connection box 100 includes a control board 2 such as an ECU, and is mounted on, for example, an automobile.

電気接続箱１００は、図１及び図２に示すように、バスバーやスイッチング回路等の内部回路を収容する筐体１０を有し、筐体１０の一側面に凹状部１１とその周囲に対向配置される少なくとも２つの凸状部１２、１３が形成された接続箱本体１と、凹状部１１に設けられた基板装着部１４に装着される制御基板２と、凹状部１１に装着されて制御基板２を保護するカバー３とを備える。 As shown in FIGS. 1 and 2, the electrical junction box 100 has a housing 10 that houses internal circuits such as a bus bar and a switching circuit, and is disposed on one side of the housing 10 so as to face the concave portion 11 and the periphery thereof. The connection box body 1 formed with at least two convex portions 12 and 13, the control substrate 2 mounted on the substrate mounting portion 14 provided in the concave portion 11, and the control substrate mounted on the concave portion 11. 2 and a cover 3 for protecting 2.

次に、電気接続箱１００の構造について説明する。
なお、以下の説明において、方向を示す表現として、図中に示すＹ方向矢印の先端側を「前側」、反対側を「後側」と表現し、Ｙ方向に直交するＺ方向矢印の先端側を「上側」又は「上方」と表現し、反対側を「下側」又は「下方」と表現することがある。またＹ方向及びＺ方向に直交するＸ方向矢印の先端側）を「一方」、反対側を「他方」と表現し、Ｙ方向両側を「左右」又は「左右側」と表現し、Ｙ方向矢印の先端側の端部を「一端」、反対側の端部を「他端」と表現することがある。 Next, the structure of the electrical junction box 100 will be described.
In the following description, as a representation of the direction, the tip side of the Y direction arrow shown in the figure is represented as “front side”, the opposite side is represented as “rear side”, and the tip side of the Z direction arrow perpendicular to the Y direction. May be expressed as “upper” or “upper”, and the opposite side may be expressed as “lower” or “lower”. Also, the tip side of the X direction arrow orthogonal to the Y direction and the Z direction is expressed as “one”, the opposite side is expressed as “the other”, both sides of the Y direction are expressed as “left and right” or “left and right side”, and the Y direction arrow In some cases, the end on the tip side is expressed as “one end” and the end on the opposite side is expressed as “other end”.

電気接続箱１００の接続箱本体１は、略直方体状の筐体１０の一側面の中央に、略直方体状の凹状部１１が形成され、その周囲の対向位置（一端及び他端）に２つの凸状部１２、１３が形成されている。 The junction box body 1 of the electrical junction box 100 has a substantially rectangular parallelepiped concave portion 11 formed at the center of one side surface of a substantially rectangular parallelepiped casing 10, and two opposing positions (one end and the other end) around it. Convex portions 12 and 13 are formed.

また凹状部１１には、制御基板２が装着される基板装着部１４が設けられ、筐体１０内の内部回路から延びるピン端子１４ａが延出するための端子開口部１４ｂを有する。また基板装着部１４には、筐体１０内から延びて、基板装着部１４に装着された制御基板２と筐体１０内の内部回路とを位置決めする位置決め突起５が設けられている。 Further, the concave portion 11 is provided with a board mounting portion 14 to which the control board 2 is mounted, and has a terminal opening 14 b for extending a pin terminal 14 a extending from an internal circuit in the housing 10. The board mounting portion 14 is provided with a positioning protrusion 5 that extends from the housing 10 and positions the control board 2 mounted on the board mounting portion 14 and an internal circuit in the housing 10.

電気接続箱１００の制御基板２は、基板２１と、基板２１上に実装される実装部品（不図示）とを有する。また基板２１には、筐体１０内から延出するピン端子１４ａが挿入されて半田接続される端子接続孔２２と、筐体１０内から延びる位置決め突起５が挿入されて制御基板２を位置決めする位置決め孔５ｂとが形成されている。 The control board 2 of the electrical junction box 100 includes a board 21 and a mounting component (not shown) mounted on the board 21. Further, the terminal 21 is inserted into the board 21 by a pin terminal 14a extending from the housing 10 and soldered, and the positioning protrusion 5 extending from the housing 10 is inserted to position the control board 2. A positioning hole 5b is formed.

電気接続箱１００のカバー３は、制御基板２を覆う上面と、上面周縁から下方に立設された側面とを有し、下側が開口した略直方体の箱形状に形成されている。
このカバー３は、接続箱本体１の筐体１０の一側面に形成された凹状部１１に装着され、凹状部１１の基板装着部１４に装着された制御基板２を覆って保護する。またカバー３は、凹状部１１の周囲に対向配置された２つの凸状部１２、１３の間に挟まれるように配置される。 The cover 3 of the electrical connection box 100 has a substantially rectangular parallelepiped box shape having an upper surface covering the control board 2 and a side surface erected downward from the periphery of the upper surface and having an open lower side.
The cover 3 is attached to a concave portion 11 formed on one side surface of the housing 10 of the connection box body 1 and covers and protects the control board 2 attached to the substrate mounting portion 14 of the concave portion 11. Further, the cover 3 is disposed so as to be sandwiched between two convex portions 12 and 13 that are opposed to each other around the concave portion 11.

カバー３の上面には、位置決め突起５に対応する２つのネジ取付孔５ｃが形成されており、これらネジ取付孔５ｃに挿入したネジ５ｄを位置決め突起５の頂部に形成されたネジ孔５ａに螺合することによって、接続箱本体１に対してカバー３が固定されるように構成されている。 Two screw mounting holes 5 c corresponding to the positioning protrusions 5 are formed on the upper surface of the cover 3, and the screws 5 d inserted into these screw mounting holes 5 c are screwed into the screw holes 5 a formed on the top of the positioning protrusions 5. By combining, the cover 3 is configured to be fixed to the junction box body 1.

またカバー３の一方（図中右側）の側面は、筐体１０の一端に形成された凸状部１２の側面に所定の間隔を持って対向し、カバー３の他方（図中左側）の側面は、筐体１０の他端に形成された凸状部１３の側面に所定の間隔を持って対向するように構成されている。 Also, one side (right side in the figure) of the cover 3 faces the side face of the convex portion 12 formed at one end of the housing 10 with a predetermined interval, and the other side (left side in the figure) side of the cover 3. Is configured to face the side surface of the convex portion 13 formed at the other end of the housing 10 with a predetermined interval.

そしてカバー３の左右側面には、放熱部４が形成されている（カバー３の左側面の放熱部４は不図示）。これら２つの放熱部４には、制御基板２等から発生した熱を、カバー３内部から外部へ逃がすための開口部４１が形成され、本実施形態では、図２に示すように、前後方向に延びる略長方形状の開口部４１が形成されている。 A heat radiating portion 4 is formed on the left and right side surfaces of the cover 3 (the heat radiating portion 4 on the left side surface of the cover 3 is not shown). These two heat radiating portions 4 are formed with openings 41 for releasing heat generated from the control board 2 and the like from the inside of the cover 3 to the outside. In this embodiment, as shown in FIG. An extending substantially rectangular opening 41 is formed.

本実施形態の電気接続箱１００では、左右側面に開口部４１（放熱部４）が形成されたカバー３を、筐体１０の凹状部１１（基板装着部１４）に装着することにより、凹状部１１の周囲に対向配置された２つの凸状部１２、１３に対して開口部４１が間隔をあけて対向配置されるように構成されている。 In the electrical junction box 100 according to the present embodiment, the cover 3 having the opening 41 (heat radiation part 4) formed on the left and right side surfaces is attached to the concave part 11 (substrate mounting part 14) of the housing 10, thereby forming the concave part. The opening 41 is configured to be opposed to the two convex portions 12 and 13 that are opposed to each other around the space 11.

これによって、カバー３内の熱を開口部４１を介して外部へ放熱することができる。また凸状部１２、１３によって、開口部４１が外部から視認困難となり、開口部４１を介してカバー３内に塵や埃、工具等の異物が侵入するのを防止することができる。 Thereby, the heat in the cover 3 can be radiated to the outside through the opening 41. Further, the convex portions 12 and 13 make it difficult to visually recognize the opening 41 from the outside, and it is possible to prevent foreign matters such as dust, dust, and tools from entering the cover 3 through the opening 41.

さらに筐体１０の凹状部１１にカバー３を装着することで、カバー３の開口部４１が凸状部１２、１３に対向配置され、外部からの視認が困難となるため、例えば開口部を隠すための板状壁部を設ける必要がなく、板状壁部のエッジ等による周辺機器等の損傷の虞がない。 Furthermore, by attaching the cover 3 to the concave portion 11 of the housing 10, the opening 41 of the cover 3 is disposed opposite to the convex portions 12 and 13, making it difficult to visually recognize from the outside. Therefore, there is no need to provide a plate-like wall portion, and there is no risk of damage to peripheral devices due to the edge of the plate-like wall portion.

なお、本実施形態は、接続箱本体１の筐体１０の外側の一側面に形成した凹状部１１の周囲に、凹状部１１を挟んで左右に対向配置される２つの凸状部１２、１３のみを形成したが、これに限定されない。例えば、左右だけではなく前後にも凸状部を形成し、凹状部１１の四方を囲うようにロの字型の凸状部を形成し、カバー３をロの字型の凸状部の内側の凹状部に装着するようにしてもよい。 In the present embodiment, two convex portions 12, 13 are arranged around the concave portion 11 formed on one side surface of the outer side of the housing 10 of the junction box body 1 so as to face each other with the concave portion 11 interposed therebetween. However, the present invention is not limited to this. For example, a convex portion is formed not only on the left and right but also on the front and rear, a square-shaped convex portion is formed so as to surround the four sides of the concave portion 11, and the cover 3 is placed inside the convex portion of the square shape. You may make it mount | wear to a concave-shaped part.

以下、図３〜図５を参照して、第１の実施形態に係る電気接続箱の放熱部の変形例について説明する。図３〜図５において、上述の実施形態と同一態様の構成要素については、同一符号を付し、その説明を省略する。 Hereinafter, with reference to FIGS. 3-5, the modification of the thermal radiation part of the electrical-connection box which concerns on 1st Embodiment is demonstrated. 3 to 5, components having the same aspects as those in the above-described embodiment are denoted by the same reference numerals and description thereof is omitted.

［放熱部の変形例］
図３は、開口部の形状を相違させた放熱部の説明図であって、図３（ａ）は、第１変形例に係る電気接続箱１００ａの放熱部の平面図であり、図３（ｂ）は、第２変形例に係る電気接続箱１００ｂの放熱部４ｂの平面図である。また図４は、カバーと別体形成された放熱部の説明図であって、図４（ａ）は、第３変形例に係る電気接続箱１００ｃの放熱部４ｃの分解斜視図であり、図４（ｂ）は、第４変形例に係る電気接続箱１００ｄの放熱部４ｄの分解斜視図である。また図５は、開口部に開閉扉を設けた放熱部の説明図であって、図５（ａ）は、第５変形例に係る電気接続箱１００ｅの放熱部４ｅの断面図であり、図５（ｂ）及び（ｃ）は、第６変形例に係る電気接続箱１００ｆの放熱部４ｆの断面図である。 [Modification of heat dissipation part]
FIG. 3 is an explanatory view of a heat radiating part with different openings, and FIG. 3 (a) is a plan view of the heat radiating part of the electrical junction box 100a according to the first modification. b) is a plan view of the heat radiating portion 4b of the electrical junction box 100b according to the second modification. FIG. 4 is an explanatory view of the heat radiating part formed separately from the cover, and FIG. 4A is an exploded perspective view of the heat radiating part 4c of the electrical junction box 100c according to the third modification. 4 (b) is an exploded perspective view of the heat radiating portion 4d of the electrical junction box 100d according to the fourth modification. FIG. 5 is an explanatory view of a heat radiating part provided with an opening / closing door in the opening part, and FIG. FIGS. 5B and 5C are cross-sectional views of the heat radiating portion 4f of the electrical junction box 100f according to the sixth modification.

まず図３を参照して、放熱部の開口部の第１及び第２変形例について説明する。第１の実施形態では、放熱部４に対して１つの大きな略長方形状の開口部４１が形成されているが、開口部の形状は任意に選択することができる。 First, with reference to FIG. 3, the 1st and 2nd modification of the opening part of a thermal radiation part is demonstrated. In the first embodiment, one large substantially rectangular opening 41 is formed with respect to the heat radiating part 4, but the shape of the opening can be arbitrarily selected.

例えば、図３（ａ）に示す第１変形例に係る電気接続箱１００ａのように、放熱部４ａに複数の長尺状の開口部４１ａを形成し、カバー３の左右側面を、櫛歯が下側に延びた櫛形に形成したり、図３（ｂ）に示す第２変形例に係る電気接続箱１００ｂのように、放熱部４ｂに複数の小さい円形からなる開口部４１ｂを形成したりもできる。 For example, like the electrical junction box 100a according to the first modification shown in FIG. 3A, a plurality of elongated openings 41a are formed in the heat radiating portion 4a, and the left and right side surfaces of the cover 3 are formed with comb teeth. It may be formed in a comb shape extending downward, or a plurality of small circular openings 41b may be formed in the heat radiating portion 4b as in the electric junction box 100b according to the second modification shown in FIG. it can.

図３（ａ）及び（ｂ）に示す放熱部４ａ及び４ｂはいずれも、第１の実施形態に係る放熱部４に比べ、１つの開口部４１ａ、４１ｂの大きさが小さいため、異物の侵入をより確実に防止できる。このように、放熱部に形成する開口部の形状やパターンについては、想定される侵入異物の大きさや形状を勘案して設計すれば良い。 3 (a) and 3 (b), both of the heat radiating portions 4a and 4b are smaller in size than the heat radiating portion 4 according to the first embodiment, so that the intrusion of foreign matter. Can be prevented more reliably. As described above, the shape and pattern of the opening formed in the heat radiating portion may be designed in consideration of the assumed size and shape of the invading foreign matter.

続いて図４を参照して、放熱部をカバーと別体形成した第３及び第４変形例について説明する。
図４（ａ）に示す第３変形例に係る電気接続箱１００ｃのカバー３は、樹脂製のカバー本体３０と、カバー本体３０と別体形成された放熱部４ｃとを有する。放熱部４ｃには、開口部４１ｃが形成されるとともに、両側面に上下方向に延びるガイド凸部４２が形成されている。また、カバー３の左右側面には、放熱部４ｃが組み込まれる放熱装着部（開口）３１が形成されており、その放熱装着部（開口）３１には、放熱部４ｃのガイド凸部４２と対応するガイド凹部３２が上下に延びて形成されている。これら放熱部４ｃ及びカバー本体３０は、放熱部４ｃを図４（ａ）に示す矢印ａ１の方向にスライドし、放熱部４ｃのガイド凸部４２とカバー本体３０のガイド凹部３２とを嵌合させることで、一体化されている。 Next, with reference to FIG. 4, third and fourth modifications in which the heat dissipating part is formed separately from the cover will be described.
The cover 3 of the electrical junction box 100c according to the third modification shown in FIG. 4A includes a resin cover main body 30 and a heat radiating portion 4c formed separately from the cover main body 30. An opening 41c is formed in the heat radiating portion 4c, and guide convex portions 42 extending in the vertical direction are formed on both side surfaces. Further, a heat radiation mounting part (opening) 31 into which the heat radiation part 4c is incorporated is formed on the left and right side surfaces of the cover 3, and the heat radiation mounting part (opening) 31 corresponds to the guide convex part 42 of the heat radiation part 4c. A guide recess 32 is formed extending vertically. The heat radiating part 4c and the cover main body 30 slide the heat radiating part 4c in the direction of the arrow a1 shown in FIG. 4A, and the guide convex part 42 of the heat radiating part 4c and the guide concave part 32 of the cover main body 30 are fitted. It is integrated.

第３変形例に係る電気接続箱１００ｃによれば、放熱部４ｃをカバー本体３０と別体で形成することで、例えば、カバー本体３０の材料である樹脂とは異なる金属によって放熱部４ｃを形成することができる。この場合、第１の実施形態に係る電気接続箱１００に比べ、カバー３内の熱をより効率的に放熱することができる。更に、放熱部４ｃに、カバー３内の制御基板２に実装されているバスバー等を接触させることで、より高い放熱効率を実現することができる。 According to the electrical junction box 100c according to the third modified example, the heat radiating part 4c is formed separately from the cover body 30 by forming the heat radiating part 4c separately from the resin that is the material of the cover main body 30, for example. can do. In this case, the heat in the cover 3 can be radiated more efficiently than in the electrical junction box 100 according to the first embodiment. Furthermore, higher heat dissipation efficiency can be realized by bringing the heat sink 4c into contact with a bus bar or the like mounted on the control board 2 in the cover 3.

図４（ｂ）に示す第４変形例に係る電気接続箱１００ｄでは、カバー本体３０と別体形成された放熱部４ｄは、複数の小さな開口部４１ｄを有し、多段に折り返された形状を有している。
この第４変形例に係る電気接続箱１００ｄによれば、第３変形例よりも放熱部４ｄの表面積を大きくでき、放熱性を向上させることができる。 In the electrical junction box 100d according to the fourth modification shown in FIG. 4B, the heat radiating part 4d formed separately from the cover body 30 has a plurality of small openings 41d and has a shape folded back in multiple stages. Have.
According to the electric junction box 100d according to the fourth modified example, the surface area of the heat radiating part 4d can be made larger than that in the third modified example, and the heat dissipation can be improved.

続いて図５を参照して、開口部に開閉扉を設けた放熱部の第５及び第６変形例について説明する。
図５（ａ）に示す第５変形例に係る電気接続箱１００ｅのカバー３は、開口部４１ｅの上端を回転軸とする開閉扉４３が設けられた放熱部４ｅを有する。開閉扉４３は、通常、重力によって閉じるが、カバー３内の温度が上昇すると、カバー３内の空気が膨張し、開閉扉４３を押し上げる（図５（ａ）に示す矢印ａ１）。これによって、開口部４１ｅが開放されるため、カバー３内の熱を放出することができる。そして、カバー３内の熱が放出されると、カバー３内の空気が収縮するため、再び開閉扉４３は下がり、開口部４１ｅが閉じられる（図５（ａ）に示す矢印ａ２）。 Next, with reference to FIG. 5, fifth and sixth modifications of the heat dissipating part in which an opening / closing door is provided in the opening will be described.
The cover 3 of the electrical junction box 100e according to the fifth modification shown in FIG. 5A has a heat radiating portion 4e provided with an opening / closing door 43 having the upper end of the opening 41e as a rotation axis. The door 43 is normally closed by gravity, but when the temperature in the cover 3 rises, the air in the cover 3 expands and pushes up the door 43 (arrow a1 shown in FIG. 5A). Accordingly, the opening 41e is opened, so that the heat in the cover 3 can be released. When the heat in the cover 3 is released, the air in the cover 3 contracts, so that the door 43 is lowered again and the opening 41e is closed (arrow a2 shown in FIG. 5A).

第５変形例に係る電気接続箱１００ｅによれば、カバー３内が高温でないような場合、開閉扉４３によって開口部４１が閉じられるため、異物の侵入防止効果を向上させることができる。 According to the electrical junction box 100e according to the fifth modified example, when the inside of the cover 3 is not at a high temperature, the opening 41 is closed by the open / close door 43, so that the effect of preventing foreign matter from entering can be improved.

図５（ｂ）及び（ｃ）に示す第６変形例に係る電気接続箱１００ｆのカバー３は、開口部４１ｆの端部を回転軸とする開閉扉４３が設けられた放熱部４ｆを有する。図５（ｂ）は、カバー内部の温度が高い場合を示し、図５（ｃ）は、カバー内部の温度が低い場合をそれぞれ表わしている。 The cover 3 of the electrical junction box 100f according to the sixth modification shown in FIGS. 5B and 5C has a heat radiating portion 4f provided with an opening / closing door 43 having the end portion of the opening 41f as a rotation axis. FIG. 5B shows a case where the temperature inside the cover is high, and FIG. 5C shows a case where the temperature inside the cover is low.

第６変形例に係る電気接続箱１００ｆのカバー３には、開閉扉４３の回転軸部分に、温度が高くなると屈曲し、温度が低くなると伸張する性質を持つＰＴＣ素子３６が設けられている。第６変形例に係る電気接続箱１００ｆによれば、開閉扉４３の回転軸部分にＰＴＣ素子３６を設けたことで、第５変形例よりも、開閉扉４３の開閉をカバー３内部の温度変化により確実に対応させることができる。 The cover 3 of the electrical junction box 100f according to the sixth modification is provided with a PTC element 36 at the rotating shaft portion of the door 43 that has a property of bending when the temperature increases and expanding when the temperature decreases. According to the electrical junction box 100f according to the sixth modification, the PTC element 36 is provided at the rotating shaft portion of the opening / closing door 43, so that the opening / closing of the opening / closing door 43 is more temperature-changeable inside the cover 3 than in the fifth modification. Therefore, it is possible to cope with the problem with certainty.

［第２の実施形態］
次に、本発明の第２の実施形態に係る電気接続箱の概要について図６を参照して説明する。なお、ここでは第１の実施形態と異なる点について説明し、図６において、上述の実施形態と同一態様の構成要素については、同一符号を付し、その説明を省略する。 [Second Embodiment]
Next, an outline of the electrical junction box according to the second embodiment of the present invention will be described with reference to FIG. Here, differences from the first embodiment will be described, and in FIG. 6, components having the same aspects as those of the above-described embodiment will be denoted by the same reference numerals and description thereof will be omitted.

本実施形態の電気接続箱２００は、カバー３内に配置される制御基板２ａが、第１の実施形態の電気接続箱１００と異なる。
図６は、カバー３の開口部４１と、カバー３内に配置される制御基板２ａの配置関係を説明する図であって、電気接続箱２００の放熱部周辺の断面図である。 The electrical junction box 200 of the present embodiment is different from the electrical junction box 100 of the first embodiment in the control board 2a disposed in the cover 3.
FIG. 6 is a view for explaining the positional relationship between the opening 41 of the cover 3 and the control board 2 a disposed in the cover 3, and is a cross-sectional view around the heat radiating portion of the electrical connection box 200.

本実施形態に係る電気接続箱２００の制御基板２ａは、基板２１に実装されたヒートシンク２３を有し、ヒートシンク２３やバスバー等の放熱部品や、トランジスタ等の発熱部品を、放熱部４の開口部４１近傍に配置している。 The control board 2a of the electrical junction box 200 according to the present embodiment includes a heat sink 23 mounted on the board 21. The heat sink 23, a heat sink such as a bus bar, and a heat generator such as a transistor are connected to the opening of the heat sink 4. 41 is arranged in the vicinity.

そして、これら放熱部品や発熱部品を開口部４１の近傍に配置することによって、開口部４１から外部への放熱性を向上できるとともに、これら開口部４１に近傍に配置された部品によって、開口部４１からカバー３内への工具等の異物侵入を防止できる。 By disposing these heat dissipation components and heat generating components in the vicinity of the opening 41, heat dissipation from the opening 41 to the outside can be improved, and by using the components arranged in the vicinity of the opening 41, the opening 41 is provided. Intrusion of foreign matter such as tools into the cover 3 can be prevented.

［第３の実施形態］
次に、本発明の第３の実施形態に係る電気接続箱の概要について図７を参照して説明する。なお、ここでは第１の実施形態と異なる点について説明し、図７において、上述の実施形態と同一態様の構成要素については、同一符号を付し、その説明を省略する。 [Third Embodiment]
Next, an outline of the electrical junction box according to the third embodiment of the present invention will be described with reference to FIG. Here, differences from the first embodiment will be described, and in FIG. 7, the same reference numerals are given to the same components as those in the above-described embodiment, and the description thereof will be omitted.

本実施形態の電気接続箱３００は、カバー３内に配置される制御基板２ｂが、第１の実施形態の電気接続箱と異なる。
図７は、カバー３の開口部４１と、カバー３内に配置される制御基板２ｂとの配置関係を説明する電気接続箱３００の正面図であり、接続箱本体１の図示が省略されている。また、この電気接続箱３００は、自動車等に搭載したとき、カバー３の左右の側面に形成された開口部４１（放熱部４）が上下に配置される電気接続箱である。 The electrical connection box 300 of the present embodiment is different from the electrical connection box of the first embodiment in the control board 2b disposed in the cover 3.
FIG. 7 is a front view of the electrical connection box 300 for explaining the positional relationship between the opening 41 of the cover 3 and the control board 2b disposed in the cover 3, and the connection box body 1 is not shown. . The electrical junction box 300 is an electrical junction box in which openings 41 (heat radiation portions 4) formed on the left and right side surfaces of the cover 3 are arranged vertically when mounted on an automobile or the like.

本実施形態に係る電気接続箱３００の制御基板２ｂには、複数の実装部品２４ａ〜２４ｄが配置されている。また、これら実装部品２４ａ〜２４ｄのうち、背が高い実装部品２４ａ及び２４ｂが下方に配置され、背が低い実装部品２４ｃ及び２４ｄが上方に配置されている。 A plurality of mounting components 24a to 24d are disposed on the control board 2b of the electrical junction box 300 according to the present embodiment. Of these mounting components 24a to 24d, tall mounting components 24a and 24b are disposed below, and short mounting components 24c and 24d are disposed above.

これにより、背が高い実装部品２４ａ及び２４ｂから発生して上昇する熱の放熱流路を確保することができ、放熱性を向上させることができる。
以下、図８を参照して、第３の実施形態に係る電気接続箱の変形例について説明する。図８において、上述の実施形態と同一態様の構成要素については、同一符号を付し、その説明を省略する。 As a result, it is possible to secure a heat radiation channel for heat generated from the tall mounting components 24a and 24b, and to improve heat dissipation.
Hereinafter, with reference to FIG. 8, the modification of the electrical-connection box which concerns on 3rd Embodiment is demonstrated. In FIG. 8, the same reference numerals are given to the same components as those in the above-described embodiment, and the description thereof is omitted.

［実装部品の配置と開口部の変形例］
図８は、カバー３の開口部４１と、カバー３内に配置される制御基板２ｃとの配置関係を説明する側面図であり、接続箱本体１の図示が省略されている。また、この電気接続箱３００は、自動車等に搭載したとき、カバー３の左右の側面に形成された開口部４１（放熱部４）が上下に配置されることを前提とする電気接続箱である。 [Arrangement of mounting parts and modification of openings]
FIG. 8 is a side view for explaining the arrangement relationship between the opening 41 of the cover 3 and the control board 2c arranged in the cover 3, and the connection box body 1 is not shown. The electrical junction box 300 is an electrical junction box on the premise that the openings 41 (heat radiation portions 4) formed on the left and right side surfaces of the cover 3 are arranged vertically when mounted on an automobile or the like. .

図８（ａ）に示す第７変形例に係る電気接続箱３００ａでは、カバー３の放熱部４ｇは、前後方向に並設された３つの開口部４１ｇを有する。開口部４１ｇは、上下方向に長い略長方形状である。なお図示しないが、カバー３の反対側の側面にも、同様の放熱部４ｇ（開口部４１ｇ）が形成され、両側面に形成された開口部４１ｇ同士が対向するように構成されている。 In the electrical junction box 300a according to the seventh modification shown in FIG. 8A, the heat radiating part 4g of the cover 3 has three openings 41g arranged in parallel in the front-rear direction. The opening 41g has a substantially rectangular shape that is long in the vertical direction. Although not shown, a similar heat radiation part 4g (opening part 41g) is formed on the side surface on the opposite side of the cover 3, and the opening parts 41g formed on both side faces are opposed to each other.

またカバー３内に配置される制御基板２ｃには、基板２１に対して複数の実装部品２４ｅ及び２４ｆが実装されている。そして、カバー３の一方の側面の開口部から他方の側面の開口部を通る直線上に、これら実装部品２４ｅ及び２４ｆが配置されないように構成されている。これによって、放熱流路中に放熱（気体）の流れを阻害するものがなく、放熱効果を更に向上させることができる。 A plurality of mounting components 24 e and 24 f are mounted on the substrate 21 on the control substrate 2 c disposed in the cover 3. The mounting components 24e and 24f are not arranged on a straight line passing from the opening on one side of the cover 3 to the opening on the other side. Thereby, there is nothing which inhibits the flow of heat dissipation (gas) in the heat dissipation flow path, and the heat dissipation effect can be further improved.

図８（ｂ）に示す第８変形例に係る電気接続箱３００ｂでは、第７変形例と同様に、カバー３の放熱部４ｇは、前後方向に並設された３つの開口部４１ｇを有し、カバー３の両側面に形成された開口部４１ｇ同士が対向するように構成されている。 In the electrical junction box 300b according to the eighth modification shown in FIG. 8B, the heat radiating portion 4g of the cover 3 has three openings 41g arranged in parallel in the front-rear direction, as in the seventh modification. The openings 41g formed on both side surfaces of the cover 3 are configured to face each other.

第８変形例の制御基板２ｄには、第７変形例よりも、基板２１に対して更に多くの実装部品２４ｇ〜２４ｉが実装され、放熱流路を避けてこれらを配置するのが困難な構成となっている。そのため、本変形例では、放熱流路に相対的に背が低い実装部品を配置している。放熱流路上に実装部品が配置される場合であっても、放熱流路上には相対的に背の低い実装部品が配置されるため、放熱（気体）の流れの阻害を小さくでき、放熱効果を向上させることができる。 The control board 2d of the eighth modification is mounted with more mounting components 24g to 24i on the board 21 than the seventh modification, and it is difficult to dispose these parts avoiding the heat radiation flow path. It has become. For this reason, in the present modification, a relatively short mounting component is disposed in the heat dissipation channel. Even when mounting components are placed on the heat dissipation flow path, the relatively short mounting components are placed on the heat dissipation flow path. Can be improved.

図８（ｃ）に示す第９変形例に係る電気接続箱３００ｃでは、カバー３の内部の上面（天井面）から突出した突起部３４が形成されている。但し、この突起部３４は、図８（ｃ）に示すように、放熱流路とは異なる空間に形成する。
電気接続箱３００ｃによれば、突起部３４を放熱流路を避けて形成しているため、突起部３４による放熱性の悪化を回避することができる。 In the electrical junction box 300c according to the ninth modification shown in FIG. 8C, a protrusion 34 protruding from the upper surface (ceiling surface) inside the cover 3 is formed. However, the protrusion 34 is formed in a space different from the heat dissipation channel, as shown in FIG.
According to the electrical junction box 300c, since the protrusion 34 is formed so as to avoid the heat dissipation channel, deterioration of heat dissipation due to the protrusion 34 can be avoided.

図８（ｄ）に示す第１０変形例に係る電気接続箱３００ｄでは、制御基板２ｅに背の高い実装部品２４ｊと背の低い実装部品２４ｋが実装され、カバー３の放熱部４ｈは、カバー３内に配置された実装部品を避けるように、前後方向に長い略長方形状の開口部４１ｈが複数形成されている。なお図示しないが、カバー３の反対側の側面にも、同様の放熱部４ｈ（開口部４１ｈ）が形成され、両側面に形成された開口部４１ｈ同士が対向するように構成されている。 In the electrical junction box 300d according to the tenth modification shown in FIG. 8 (d), the tall mounting component 24j and the short mounting component 24k are mounted on the control board 2e. A plurality of substantially rectangular openings 41h that are long in the front-rear direction are formed so as to avoid the mounted components arranged inside. Although not shown, a similar heat radiating portion 4h (opening portion 41h) is formed on the opposite side surface of the cover 3 so that the opening portions 41h formed on both side surfaces face each other.

第１０変形例に係る電気接続箱３００ｄによっても、第７変形例と同様、放熱流路中に放熱（気体）の流れを阻害するものがなく、放熱効果を更に向上させることができる。 Similarly to the seventh modified example, the electric junction box 300d according to the tenth modified example does not obstruct the flow of heat radiation (gas) in the heat radiation channel, and the heat radiation effect can be further improved.

更に、図８（ｅ）に示す第１１変形例に係る電気接続箱３００ｅの場合、第１０変形例と異なり、複数の開口部４１ｈのうち、上方の開口部４１ｈを下方の開口部４１ｈよりも小さく形成している。なお図示しないが、カバー３の反対側の側面にも、同様の放熱部４ｈ（開口部４１ｈ）が形成され、両側面に形成された開口部４１ｈ同士が対向するように構成されている。
第１１変形例に係る電気接続箱３００ｅによれば、カバー３の上方の開口部を小さくすることによって、異物の侵入防止効果を向上させることができる。 Furthermore, in the case of the electrical junction box 300e according to the eleventh modification shown in FIG. 8 (e), unlike the tenth modification, the upper opening 41h of the plurality of openings 41h is set to be lower than the lower opening 41h. It is small. Although not shown, a similar heat radiating portion 4h (opening portion 41h) is formed on the opposite side surface of the cover 3 so that the opening portions 41h formed on both side surfaces face each other.
According to the electrical junction box 300e according to the eleventh modified example, the effect of preventing foreign matter from entering can be improved by reducing the opening above the cover 3.

［第４の実施形態］
次に、本発明の第４の実施形態に係る電気接続箱の概要について図９を参照して説明する。なお、ここでは第１の実施形態と異なる点について説明し、図９において、上述の実施形態と同一態様の構成要素については、同一符号を付し、その説明を省略する。 [Fourth Embodiment]
Next, an outline of an electrical junction box according to the fourth embodiment of the present invention will be described with reference to FIG. Here, differences from the first embodiment will be described, and in FIG. 9, components having the same aspects as those of the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted.

本実施形態に係る電気接続箱４００は、接続箱本体１の筐体１０の凸状部１２ａ、１３ａの形状が、第１の実施形態の電気接続箱１００と異なっている。
本実施形態では、接続箱本体１の筐体１０に形成された凸状部１２ａのカバー３と対向する側面１２１が傾斜し、凸状部１２の頂部１２２に向かうにつれてカバー３から離れるように構成されている。 The electrical junction box 400 according to the present embodiment is different from the electrical junction box 100 of the first embodiment in the shape of the convex portions 12a and 13a of the casing 10 of the junction box body 1.
In the present embodiment, the side surface 121 facing the cover 3 of the convex portion 12a formed on the housing 10 of the junction box body 1 is inclined, and is configured to be separated from the cover 3 toward the top portion 122 of the convex portion 12. Has been.

本変形例のように、凸状部１２ａの側面１２１を傾斜させ、頂部１２２においてカバー３と凸状部１２ａとの間隔を拡張することで、放熱部４（開口部４１）からの熱の放出が促され、放熱性を更に向上させることができる。 As in this modification, the side surface 121 of the convex portion 12a is inclined, and the space between the cover 3 and the convex portion 12a is expanded at the top portion 122, thereby releasing heat from the heat radiating portion 4 (opening portion 41). Is promoted, and the heat dissipation can be further improved.

［第５の実施形態］
続いて、本発明の第５の実施形態に係る電気接続箱について図１０を参照して説明する。なお、ここでは第１の実施形態と異なる点について説明し、図１０において、上述の実施形態と同一態様の構成要素については、同一符号を付し、その説明を省略する。 [Fifth Embodiment]
Next, an electrical junction box according to the fifth embodiment of the present invention will be described with reference to FIG. Here, differences from the first embodiment will be described, and in FIG. 10, components having the same aspects as those of the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted.

本実施形態の電気接続箱５００は、接続箱本体１の筐体１０ｂの凸状部１２ｂ（１３ｂ）の形状と、カバー３の放熱部４ｉの開口部４１ｉの形状が、第１の実施形態の電気接続箱１００と異なっている。 In the electrical junction box 500 of this embodiment, the shape of the convex portion 12b (13b) of the casing 10b of the junction box body 1 and the shape of the opening 41i of the heat radiating portion 4i of the cover 3 are the same as those of the first embodiment. Different from the electrical junction box 100.

本実施形態では、接続箱本体１の筐体１０ｂの凸状部１２ｂ（１３ｂ）に、凸状部１２ｂ（１３ｂ）を前後方向に分断する切欠部１２３が形成されている。図１０に示す電気接続箱５００では、凸状部１２ｂに３つの切欠部１２３が形成されている。 In this embodiment, the notch 123 which divides the convex part 12b (13b) in the front-back direction is formed in the convex part 12b (13b) of the housing 10b of the junction box body 1. In the electrical junction box 500 shown in FIG. 10, three notches 123 are formed in the convex portion 12b.

またカバー３の放熱部４ｉの開口部４１ｉは、切欠部１２３を避け、凸状部１２ｂとする位置に形成されている。図１０に示す電気接続箱５００では、３つの切欠部１２３を避けるように、凸状部１２ｂ（１３ｂ）と対向する２つの開口部４１ｉが形成されている。 Further, the opening 41i of the heat radiating part 4i of the cover 3 is formed at a position that avoids the notch 123 and is a convex part 12b. In the electrical junction box 500 shown in FIG. 10, two openings 41 i facing the convex portion 12 b (13 b) are formed so as to avoid the three notches 123.

本変形例のように、凸状部１２ｂ（１３ｂ）に切欠部１２３を形成することにより、放熱部４ｉ（開口部４１ｉ）からの熱の放出が促され、放熱性を更に向上させることができる。 As in the present modification, by forming the notch portion 123 in the convex portion 12b (13b), the release of heat from the heat radiation portion 4i (opening portion 41i) is promoted, and the heat radiation performance can be further improved. .

［第６の実施形態］
次に、本発明の第６の実施形態に係る電気接続箱の概要について図１１〜図１６を参照して説明する。なお、ここでは第１の実施形態と異なる点について説明し、図１１〜図１６において、上述の実施形態と同一態様の構成要素については、同一符号を付し、その説明を省略する。 [Sixth Embodiment]
Next, the outline | summary of the electrical-connection box based on the 6th Embodiment of this invention is demonstrated with reference to FIGS. Here, differences from the first embodiment will be described, and in FIGS. 11 to 16, the same reference numerals are given to components having the same aspects as those of the above-described embodiment, and description thereof will be omitted.

本実施形態に係る電気接続箱６００は、接続箱本体１の筐体１０ｃの凹状部１１の周囲に対向配置された２つの凸状部のうち、一方（図１１の右側）の凸状部１２ｃの形状が、第１の実施形態の電気接続箱１００と異なっている。また凹状部１１に装着されるカバー３の、凸状部１２ｃと対向する側面の放熱部４ｊが、第１の実施形態の電気接続箱１００と異なっている。また位置合せ突起の形状及び接続箱本体１とカバー３の固定方法とが、第１の実施形態の電気接続箱と異なっている。
なお本実施形態に係る電気接続箱６００は、使用時（自動車搭載時）に、凸状部１２ｃが上方に配置されることを前提とした前提とした電気接続箱である。 The electrical junction box 600 according to the present embodiment includes one convex portion 12c (on the right side in FIG. 11) among the two convex portions disposed opposite to each other around the concave portion 11 of the casing 10c of the junction box body 1. Is different from the electrical junction box 100 of the first embodiment. Further, the heat radiation part 4j on the side surface of the cover 3 attached to the concave part 11 that faces the convex part 12c is different from the electrical junction box 100 of the first embodiment. Further, the shape of the alignment protrusion and the method of fixing the junction box body 1 and the cover 3 are different from those of the electrical junction box of the first embodiment.
Note that the electrical junction box 600 according to the present embodiment is an electrical junction box based on the premise that the convex portion 12c is disposed above when in use (when mounted in an automobile).

図１１は、本実施形態に係る電気接続箱６００の接続箱本体１を示す斜視図であり、図１２は、カバー３の一方の側面の放熱部４ｊを示す斜視図であり、図１３は、放熱部４ｊのカバー内部の構造を説明する斜視図である。また図１４は、本実施形態に係る電気接続箱６００の効果を説明する図であって、図１１のＢ−Ｂ´線に沿う断面の放熱部４ｊの近傍を示す部分拡大図である。また図１５は、カバー３の装着方法を説明する図であり、図１１のＢ−Ｂ´線に沿う断面図である。また図１６は、カバー３の固定構造示す斜視図である。 11 is a perspective view showing the junction box body 1 of the electrical junction box 600 according to the present embodiment, FIG. 12 is a perspective view showing the heat radiating portion 4j on one side surface of the cover 3, and FIG. It is a perspective view explaining the structure inside the cover of the thermal radiation part 4j. Moreover, FIG. 14 is a figure explaining the effect of the electrical junction box 600 which concerns on this embodiment, Comprising: It is the elements on larger scale which show the vicinity of the thermal radiation part 4j of the cross section along the BB 'line of FIG. FIG. 15 is a view for explaining a method of attaching the cover 3, and is a cross-sectional view taken along the line BB ′ of FIG. FIG. 16 is a perspective view showing a fixing structure of the cover 3.

電気接続箱６００の接続箱本体１の筐体１０ｃは、凹状部１１の周囲の左右両端に配置された２つの凸状部のうち、一方の凸状部１２ｃの凹状部側の側面（カバー３と対向する側面）に凹部１２４を有する。なお本実施形態では、他方の凸状部１３には凹部１２４が形成されていない。 The casing 10c of the junction box body 1 of the electrical junction box 600 has a side surface (cover 3) of the convex portion side of one convex portion 12c among the two convex portions arranged at the left and right ends around the concave portion 11. And a concave portion 124 on the side surface facing the surface. In the present embodiment, the concave portion 124 is not formed in the other convex portion 13.

電気接続箱６００のカバー３の側面のうち、凸状部１２ｃと対向配置される側面に形成された放熱部４ｊは、図１２に示すように、開口部４１ｊと、開口部４１ｊを囲むように形成された囲壁部４４とを有する。この囲壁部４４は、カバー３を筐体１０ｃの凹状部１１に装着すると、筐体１０ｃの凸状部１２ｃの凹部１２４に入り込むようになっている。なお、放熱性を確保するため、開口部４１ｊの周囲に形成された囲壁部４４の先端が、凸状部１２の凹部１２４とが離間配置されように、放熱部４ｊと凸状部１２ｃとは、所定の間隔をもって配置されている。 Of the side surface of the cover 3 of the electrical junction box 600, the heat radiating portion 4j formed on the side surface opposed to the convex portion 12c surrounds the opening portion 41j and the opening portion 41j as shown in FIG. And a surrounding wall portion 44 formed. When the cover 3 is attached to the concave portion 11 of the housing 10c, the surrounding wall portion 44 enters the concave portion 124 of the convex portion 12c of the housing 10c. In order to ensure heat dissipation, the heat radiation part 4j and the convex part 12c are arranged so that the front end of the surrounding wall part 44 formed around the opening part 41j is spaced from the concave part 124 of the convex part 12. Are arranged at a predetermined interval.

また放熱部４ｊは、図１３に示すように、カバー３の内側に、カバー３内に配置される制御基板２の基板２１の端部に係止する鉤状の係止される係止突起４５を有する。
なお本実施形態では、カバー３の側面のうち、凸状部１３と対向配置される側面には、第１の実施形態の電気接続箱１００と同様の放熱部４が形成されている Further, as shown in FIG. 13, the heat radiating portion 4 j is provided on the inner side of the cover 3 and has a hook-like locking projection 45 that is locked to the end portion of the substrate 21 of the control board 2 disposed in the cover 3. Have
In the present embodiment, among the side surfaces of the cover 3, the heat radiating portion 4 similar to the electrical junction box 100 of the first embodiment is formed on the side surface facing the convex portion 13.

本実施形態に係る電気接続箱６００によれば、開口部４１ｊの周囲を囲む囲壁部４４が、凸状部１２ｃの凹部１２４に入り込む構成となっているため、開口部４１ｊからカバー３内への異物の侵入防止効果に優れている。特に、図１４に示すように、自動車等に搭載した場合、上方に配置される放熱部４ｊ（開口部４１ｊ）に上記放熱構造を採用することによって、電気接続箱６００に水滴などがかかった場合でも、開口部４１ｊからカバー３内への水滴の侵入を防ぐことができる。 According to the electrical junction box 600 according to the present embodiment, the surrounding wall portion 44 surrounding the opening portion 41j is configured to enter the concave portion 124 of the convex portion 12c, so that the opening portion 41j enters the cover 3. Excellent in preventing foreign objects from entering. In particular, as shown in FIG. 14, when mounted in an automobile or the like, when the above heat dissipation structure is employed in the heat dissipating part 4 j (opening 41 j) disposed above, water droplets or the like are applied to the electrical connection box 600. However, entry of water droplets from the opening 41j into the cover 3 can be prevented.

続いて、図１５及び図１６を参照して、本実施形態に係る電気接続箱６００の組立方法について説明する。図１５、接続箱本体１とカバー３の装着方法及び固定方法について、図１５及び図１６を参照して説明する。 Then, with reference to FIG.15 and FIG.16, the assembly method of the electrical-connection box 600 which concerns on this embodiment is demonstrated. FIG. 15 will be described with reference to FIG. 15 and FIG. 16 for a method of attaching and fixing the junction box body 1 and the cover 3.

筐体１０ｃの凹状部１１にカバー３を装着するにあたって、まず、凹状部１１の周囲に形成された２つの凸状部１２ｃ、１３のうち、凹部１２４を有する一方の凸状部１２ｃと、カバー３の側面に形成された２つの放熱部４、４ｊのうち、開口部４１ｊの周囲に囲壁部４４が形成された放熱部４ｊとが、向き合うようにカバー３と筐体１０ｃとを配向する。 When attaching the cover 3 to the concave portion 11 of the housing 10c, first, of the two convex portions 12c and 13 formed around the concave portion 11, one convex portion 12c having the concave portion 124, and the cover The cover 3 and the housing 10c are oriented so that the heat radiating part 4j in which the surrounding wall part 44 is formed around the opening 41j of the two heat radiating parts 4 and 4j formed on the side surfaces of the three faces.

その後、図１５（ａ）に示すように、カバー３を傾斜させ、凸状部１２ｃの凹部１２４に対して、カバー３の開口部４１ｊの周囲の囲壁部４４を斜め上方から差し込む（図１５（ａ）に示す矢印ａ１方向）。 Thereafter, as shown in FIG. 15 (a), the cover 3 is tilted, and the surrounding wall portion 44 around the opening 41j of the cover 3 is inserted obliquely from above into the concave portion 124 of the convex portion 12c (FIG. 15 ( Arrow a1 direction shown in a)).

続いて、図１５（ｂ）に示すように、凸状部１２ｃに囲壁部４４が突き当たったところで、傾斜しているカバー３の上端側を下げ（図１５（ｂ）に示す矢印ａ２方向）、凹状部１１にカバー３を設置する。 Subsequently, as shown in FIG. 15B, when the surrounding wall portion 44 abuts against the convex portion 12c, the upper end side of the inclined cover 3 is lowered (in the direction of arrow a2 shown in FIG. 15B), The cover 3 is installed in the concave portion 11.

最後に、図１５（ｃ）に示すように、放熱部４ｊのカバー３内側に形成された係止突起４５を制御基板２の基板２１の端部に突き当たるまで、カバー３を図中右側にスライドさせる（図１５（ｃ）に示す矢印ａ３）。これによって、接続箱本体１に対してカバー３が位置決めされる。 Finally, as shown in FIG. 15 (c), the cover 3 is slid to the right in the drawing until the locking projection 45 formed on the inner side of the cover 3 of the heat radiating portion 4j hits the end of the substrate 21 of the control board 2. (Arrow a3 shown in FIG. 15C). As a result, the cover 3 is positioned with respect to the junction box body 1.

次に、図１６を参照して、筐体１０ｃ（接続箱本体１）とカバー３の固定構造について説明する。
本実施形態の固定構造は、図１６に示すように、カバー３の前側面及び後側面に形成されたロック片６を、接続箱本体１の筐体１０の前側面及び後側面に形成されたロック係止部７に係止することによって、筐体１０の凹状部１１に装着されたカバー３を固定する。 Next, with reference to FIG. 16, the fixing structure of the housing 10c (junction box body 1) and the cover 3 will be described.
In the fixing structure of the present embodiment, as shown in FIG. 16, the lock pieces 6 formed on the front side surface and the rear side surface of the cover 3 are formed on the front side surface and the rear side surface of the housing 10 of the connection box body 1. By engaging with the lock engaging portion 7, the cover 3 attached to the concave portion 11 of the housing 10 is fixed.

カバー３に形成された係止ロック片６は、カバー３の前側面及び後側面から下方に延びるロックアーム６ａと、ロックアーム６ａの先端に形成されたロック爪６ｂとからなる。 The locking lock piece 6 formed on the cover 3 includes a lock arm 6a extending downward from the front side surface and the rear side surface of the cover 3, and a lock claw 6b formed at the tip of the lock arm 6a.

筐体１０の前側面及び後側面に形成されたロック係止部７は、左右方向に延びる長尺状の開口７ａを有するフック部７ｂであって、開口幅の小さい小幅部７ｃと開口幅の大きい大幅部７ｄとを有する。 The lock engaging portions 7 formed on the front side surface and the rear side surface of the housing 10 are hook portions 7b having a long opening 7a extending in the left-right direction, and a small width portion 7c having a small opening width and an opening width. And a large large portion 7d.

本実施形態の固定構造では、ロック係止部７の大幅部７ｄの開口７ａに係止ロック片６を挿入してロック爪６ｂを貫通させた後、係止ロック片６を小幅部７ｃの開口７ａにスライドさせることによって、ロック爪６ｂを小幅部７ｃのフック部７ｂに係止する。 In the fixing structure of the present embodiment, after the locking lock piece 6 is inserted into the opening 7a of the large portion 7d of the lock locking portion 7 and the lock claw 6b is penetrated, the locking lock piece 6 is opened to the opening of the small width portion 7c. By sliding to 7a, the lock claw 6b is locked to the hook portion 7b of the small width portion 7c.

すなわち、接続箱本体１とカバー３の装着時、図１５（ｃ）に示すように、放熱部４ｊの係止突起４５を制御基板２の基板２１の端部に突き当てるようにスライドさせることによって、大幅部７ｄの開口７ａに挿入されていた係止ロック片６が小幅部７ｃの開口７aにスライドされ、ロック爪６ｂが小幅部７ｃのフック部７ｂに係止され、接続箱本体１とカバー３が固定される。 That is, when the connection box main body 1 and the cover 3 are mounted, as shown in FIG. 15 (c), the locking projection 45 of the heat radiating portion 4 j is slid so as to abut against the end of the substrate 21 of the control board 2. The locking lock piece 6 inserted into the opening 7a of the large portion 7d is slid into the opening 7a of the small width portion 7c, and the lock claw 6b is locked to the hook portion 7b of the small width portion 7c. 3 is fixed.

［第７の実施形態］
次に、本発明の第７の実施形態に係る電気接続箱について図１７及び図１８を参照して説明する。なお、ここでは第１の実施形態と異なる点について説明し、図１７及び図１８において、上述の実施形態と同一態様の構成要素については、同一符号を付し、その説明を省略する。 [Seventh Embodiment]
Next, an electrical junction box according to a seventh embodiment of the present invention will be described with reference to FIGS. Here, differences from the first embodiment will be described. In FIG. 17 and FIG. 18, the same reference numerals are given to the same components as those of the above-described embodiment, and the description thereof will be omitted.

本実施形態に係る電気接続箱７００は、カバー３の放熱部４ｋの開口部４１ｋの構造が第１の実施形態の電気接続箱１００と異なっている。また制御基板２が放熱プレート８を有する点が、第１の実施形態の電気接続箱１００と異なっている。 The electrical junction box 700 according to the present embodiment is different from the electrical junction box 100 of the first embodiment in the structure of the opening 41k of the heat radiating portion 4k of the cover 3. Moreover, the point which the control board 2 has the heat radiating plate 8 differs from the electrical junction box 100 of 1st Embodiment.

図１７は、本実施形態に係る電気接続箱７００の放熱部周辺の断面図であり、図１８は、電気接続箱７００の放熱部周辺の斜視図である。この電気接続箱７００は、カバー３の左右側面に設けられた放熱部が、自動車等に対して上下に配置されるように搭載されることを前提とした電気接続箱である。 FIG. 17 is a cross-sectional view of the vicinity of the heat dissipation portion of the electrical connection box 700 according to the present embodiment, and FIG. 18 is a perspective view of the periphery of the heat dissipation portion of the electrical connection box 700. This electrical junction box 700 is an electrical junction box on the premise that the heat radiating portions provided on the left and right side surfaces of the cover 3 are mounted so as to be arranged vertically with respect to an automobile or the like.

電気接続箱７００の制御基板２ｆは、基板２１に実装された発熱部品等に対して、絶縁性の熱伝導シート９を介して取り付けられた金属製の放熱プレート８を有する。この放熱プレート８は、一端がＬ字型に折れ曲がって立設された立壁部８１を有し、この立壁部８１がカバー３の側面に形成された開口部４１ｋ（放熱部４ｋ）の近傍に配置されている。本実施形態では、放熱プレート８の一端の立壁部８１は、カバー３の内部に配置され、先端に延びるにつれ、開口部４１ｋ（放熱部４ｋ）に近づくように傾斜している。 The control board 2f of the electrical junction box 700 has a metal heat radiating plate 8 attached to a heat-generating component mounted on the board 21 via an insulating heat conductive sheet 9. The heat radiating plate 8 has a standing wall portion 81 that is bent up in an L shape at one end, and the standing wall portion 81 is disposed in the vicinity of the opening 41k (heat radiating portion 4k) formed on the side surface of the cover 3. Has been. In the present embodiment, the standing wall portion 81 at one end of the heat radiating plate 8 is disposed inside the cover 3 and is inclined so as to approach the opening 41k (heat radiating portion 4k) as it extends to the tip.

電気接続箱７００の放熱部４ｋは、カバー３の側面が傾斜して凸状部１２に向かって突出する突出部４６が側面上部に形成されるとともに、側面下部が切り欠かれ、突出部４６の下端から側面下部の切欠きにわたって開口部４１ｋが形成されている。 The heat radiating portion 4k of the electrical junction box 700 has a protruding portion 46 that protrudes toward the convex portion 12 with the side surface of the cover 3 inclined, and is formed at the upper portion of the side surface. An opening 41k is formed from the lower end to the notch at the lower side.

また開口部４１ｋの一部は、放熱プレート８の立壁部８１によって塞がれ、突出部４６の下端の開口部４１ｋから、カバー３内の熱が外部に放熱されるようになっている。このため、カバー３内に工具等の異物を侵入させるのが非常に困難であるとともに、開口部４１ｋの近傍に放熱プレート８の立壁部８１が配置されるため放熱性を向上させることができる。なお突出部４６の内側には、強度を上げるための補強リブ４７を設けても良い。 A part of the opening 41k is closed by the standing wall 81 of the heat radiating plate 8, and the heat in the cover 3 is radiated to the outside from the opening 41k at the lower end of the protrusion 46. For this reason, it is very difficult to allow foreign objects such as tools to enter the cover 3, and the heat radiation performance can be improved because the standing wall portion 81 of the heat radiation plate 8 is disposed in the vicinity of the opening 41k. A reinforcing rib 47 for increasing the strength may be provided inside the protruding portion 46.

［第８の実施形態］
次に、本発明の第８の実施形態に係る電気接続箱について図１９及び図２０を参照して説明する。なお、ここでは第１の実施形態と異なる点について説明し、図１９及び図２０において、上述の実施形態と同一態様の構成要素については、同一符号を付し、その説明を省略する。 [Eighth Embodiment]
Next, an electrical junction box according to an eighth embodiment of the present invention will be described with reference to FIGS. Here, differences from the first embodiment will be described, and in FIG. 19 and FIG. 20, the same reference numerals are given to the same components as those of the above-described embodiment, and the description thereof will be omitted.

本実施形態に係る電気接続箱８００は、カバー３の放熱部４ｌの開口部４１ｌの構造が第１の実施形態の電気接続箱１００と異なっている。また制御基板２が放熱プレート８ａを有する点が、第１の実施形態の電気接続箱１００と異なっている。 The electrical junction box 800 according to the present embodiment is different from the electrical junction box 100 of the first embodiment in the structure of the opening 41 l of the heat radiating portion 4 l of the cover 3. Moreover, the point which the control board 2 has the thermal radiation plate 8a differs from the electrical junction box 100 of 1st Embodiment.

図１９は、本実施形態に係る電気接続箱８００の放熱部周辺の断面図であり、図２０は、電気接続箱８００の放熱部周辺の斜視図である。この電気接続箱８００は、カバー３の左右側面に設けられた放熱部が、自動車等に対して上下に配置されるように搭載されることを前提とした電気接続箱である。 FIG. 19 is a cross-sectional view of the vicinity of the heat dissipation portion of the electrical connection box 800 according to the present embodiment, and FIG. 20 is a perspective view of the periphery of the heat dissipation portion of the electrical connection box 800. This electrical junction box 800 is an electrical junction box on the premise that the heat radiating portions provided on the left and right side surfaces of the cover 3 are mounted so as to be arranged vertically with respect to an automobile or the like.

電気接続箱８００の制御基板２ｇは、基板２１に実装された発熱部品等に対して、絶縁性の熱伝導シート９を介して取り付けられた金属製の放熱プレート８ａを有する。この放熱プレート８ａは、一端がＬ字型に折れ曲がって立設された立壁部８１ａを有し、この立壁部８１ａがカバー３の側面に形成された開口部４１ｌ（放熱部４ｌ）と、接続箱本体１の筐体１０の凸状部１２との間に配置されるように構成されている。本実施形態では、放熱プレート８の一端の立壁部８１は、先端に延びるにつれ、開口部４１ｌ（放熱部４ｌ）に近づくように傾斜している。 The control board 2g of the electrical junction box 800 has a metal heat radiating plate 8a attached to a heat generating component mounted on the board 21 via an insulating heat conductive sheet 9. This heat radiating plate 8a has an upright wall portion 81a that is bent up in an L-shape at one end, and this upright wall portion 81a is formed on the side surface of the cover 3 with an opening 41l (heat radiating portion 4l), and a junction box. It is comprised so that it may arrange | position between the convex-shaped parts 12 of the housing | casing 10 of the main body 1. FIG. In the present embodiment, the standing wall portion 81 at one end of the heat radiating plate 8 is inclined so as to approach the opening portion 41 l (heat radiating portion 4 l) as it extends to the tip.

本実施形態に係る電気接続箱によれな、放熱プレート８ａの立壁部８１ａがカバー３の外部に露出するように配置されているため、カバー３内の熱を効率的に放出することができる。 Since the standing wall portion 81a of the heat radiating plate 8a is disposed so as to be exposed to the outside of the cover 3 as is the case with the electrical junction box according to the present embodiment, the heat in the cover 3 can be efficiently released.

１…接続箱本体、１０、１０ａ〜１０ｃ…筐体、１１…凹状部、１２、１２ａ〜１０ｃ、１３、１３ａ〜１３ｂ…凸状部、１２１…傾斜面、１２２…頂部、１２３…切欠部、１２４…凹部、１４…基板装着部、１４ａ…ピン端子、１４ｂ…端子開口部、
２…制御基板、２１…基板、２２…端子接続孔、２３…ヒートシンク、２４…実装部品、
３…カバー、３０…カバー本体、３１…装着部、３２…ガイド凹部、
４…放熱部、４１…開口部、４２…ガイド凸部、４３…開閉扉、４３ａ…ＰＣＴ素子、４４…囲壁部、
５…位置決め突起、５ａ…ネジ孔、５ｂ…突起挿入孔、５ｃ…ネジ挿入孔、５ｄ…ネジ、
６…係止ロック片、６ａ…ロックアーム、６ｂ…ロック爪、
７…ロック係止部、７ａ…開口、７ｂ…フック部、７ｃ…小幅部、７ｄ…大幅部、
８…放熱プレート、８１…立壁部、
９…熱伝導シート、
１００、１００ａ〜１００ｆ、２００、３００、３００ａ〜３００ｅ、４００、５００、６００、７００、８００…電気接続箱。
DESCRIPTION OF SYMBOLS 1 ... Connection box main body 10, 10a-10c ... Housing | casing, 11 ... Concave part, 12, 12a-10c, 13, 13a-13b ... Convex part, 121 ... Inclined surface, 122 ... Top part, 123 ... Notch part, 124 ... concave portion, 14 ... substrate mounting portion, 14a ... pin terminal, 14b ... terminal opening,
2 ... Control board, 21 ... Board, 22 ... Terminal connection hole, 23 ... Heat sink, 24 ... Mounted component,
3 ... Cover, 30 ... Cover body, 31 ... Mounting part, 32 ... Guide recess,
4 ... Radiation part, 41 ... Opening part, 42 ... Guide convex part, 43 ... Opening / closing door, 43a ... PCT element, 44 ... Enclosing wall part,
5 ... Positioning projection, 5a ... Screw hole, 5b ... Projection insertion hole, 5c ... Screw insertion hole, 5d ... Screw,
6 ... locking lock piece, 6a ... lock arm, 6b ... lock claw,
7 ... Lock engaging part, 7a ... Opening, 7b ... Hook part, 7c ... Small width part, 7d ... Large part,
8 ... Radiating plate, 81 ... Standing wall,
9 ... heat conduction sheet,
100, 100a to 100f, 200, 300, 300a to 300e, 400, 500, 600, 700, 800...

Claims

A junction box main body having an internal circuit and a housing that accommodates the internal circuit, and a concave portion formed on one side of the housing, and at least two convex portions that are arranged to face each other around the concave portion, A junction box body having a substrate mounting portion provided in the concave portion;
A control board mounted on the board mounting portion and electrically connected to the internal circuit;
A cover that is attached to the concave portion so as to cover the control board, and has a heat radiation portion that includes an opening on two opposing side surfaces;
The electrical junction box, wherein the heat dissipating part is disposed to face the convex part with a gap.

The control board has a heating element or a heat radiator mounted on the board,
The electrical junction box according to claim 1, wherein the heating element or the radiator is disposed in the vicinity of the opening of the cover.

The convex portion is inclined on the surface facing the heat radiating portion,
The electrical junction box according to claim 1 or 2, wherein a gap between the convex portion and the cover increases toward a top portion of the convex portion.

The convex part has a notch that penetrates toward the concave part,
The electrical connection box according to claim 1, wherein the opening is formed at a position not facing the notch.

The convex portion has a concave portion formed on a surface facing the heat radiating portion,
The heat dissipation portion has a convex wall portion formed so as to surround the periphery of the opening,
The electric junction box according to claim 1, wherein the convex wall portion enters the concave portion.

The control board is a heat radiating plate having an upright wall portion at one end, and the upright wall portion has a heat radiating plate disposed in the vicinity of the heat radiating portion in the cover,
The electrical junction box according to claim 1, wherein a side surface of the cover on which the heat radiating portion is formed has an inclined surface that is inclined so that the end approaches the convex portion.

The control board is a heat radiating plate having a standing wall portion at one end, and the standing wall portion has a heat radiating plate disposed between the cover and the convex portion ,
The electrical connection box according to claim 1 , wherein the upright wall portion is inclined so as to approach the heat radiating portion including the opening portion formed on a side surface of the cover as it extends toward a tip .