JP2019126112A - Housing and electric connection box - Google Patents

Housing and electric connection box Download PDF

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JP2019126112A
JP2019126112A JP2018003332A JP2018003332A JP2019126112A JP 2019126112 A JP2019126112 A JP 2019126112A JP 2018003332 A JP2018003332 A JP 2018003332A JP 2018003332 A JP2018003332 A JP 2018003332A JP 2019126112 A JP2019126112 A JP 2019126112A
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peripheral wall
outer peripheral
lid
housing
side outer
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JP6996986B2 (en
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隆史 大木
Takashi Oki
隆史 大木
翔 倉田
Sho Kurata
翔 倉田
健太 神谷
Kenta Kamiya
健太 神谷
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Yazaki Corp
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Yazaki Corp
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  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Connection Or Junction Boxes (AREA)

Abstract

To provide a housing and an electric connection box that can suppress the infiltration of fluid from outside while releasing the heat generated in the internal space of the housing body to the outside.SOLUTION: A housing 2 of an electric connection box 1 comprises a housing body 3 and a lid member 4. The housing body 3 and the lid member 4 are installed on an installation object in a state that the insertion direction is crossed to the vertical direction. A housing-side mating part 33 protrudes to the opposite side of a lid-side mating part 43 in the orthogonal direction. A protrusion part 34 is formed so that a heat dissipation space part 8 is formed between the protrusion part and the lid-side mating part 43. A rib 44 is formed on a lid-side outer peripheral wall 41 protruding to the housing-side mating part 33 in opposition to the protrusion part 34 in the orthogonal direction. The heat dissipation space part 8 communicates with the outside in an external opening part 81, communicates with an internal space 3a of the housing body 3 in an internal opening part 82, and is formed in a vertical direction upper area of the housing-side outer peripheral wall 31.SELECTED DRAWING: Figure 5

Description

本発明は、筐体および電気接続箱に関する。   The present invention relates to a housing and an electrical connection box.

車両等に搭載される従来の電気接続箱における筐体は、少なくとも筐体本体と、蓋部材と、で構成される。筐体本体は、筐体側外周壁により筐体側開口部が形成されている。蓋部材は、蓋側外周壁により蓋側開口部が形成されている。電気接続箱は、蓋側外周壁のうち一部が筐体側開口部に挿入されることで、蓋部材を筐体本体に対して嵌合する（特許文献１参照）。   A housing of a conventional electric connection box mounted on a vehicle or the like includes at least a housing body and a lid member. The housing body has a housing-side opening formed by the housing-side outer peripheral wall. The lid member has a lid side opening formed by the lid side outer peripheral wall. In the electric connection box, the lid member is fitted to the casing body by inserting a part of the lid-side outer peripheral wall into the casing-side opening (see Patent Document 1).

電気接続箱は、通常、車両のエンジンルームや車室内に搭載された搭載状態において、筐体本体に対して蓋部材が挿入される挿入方向が鉛直方向と一致する。電気接続箱は、筐体本体の内部空間にブロックが収容され、ブロックの内部空間に端子のカシメ部やバスバー等の電子部品が収容される。電気接続箱は、ブロックの内部空間に収容される電子部品から熱が発生すると、熱が上昇するがブロックの上方向において蓋部材が対向することとなり、蓋部材の内部空間に熱が拡散することとなる。   Generally, in the mounting state where the electrical connection box is mounted in an engine room or a vehicle compartment of a vehicle, the insertion direction in which the lid member is inserted into the housing body coincides with the vertical direction. In the electrical connection box, the block is accommodated in the internal space of the casing main body, and the internal space of the block accommodates electronic components such as a caulking portion of a terminal and a bus bar. In the electrical connection box, when heat is generated from the electronic components accommodated in the internal space of the block, the heat rises, but the lid member faces in the upper direction of the block, and the heat diffuses into the internal space of the lid member It becomes.

また、電気接続箱は、搭載状態において、液体の浸入を抑制するために、筐体本体と、蓋部材との嵌合部分において防液体構造を形成している。   Further, in the mounted state, the electric connection box forms a liquid-proof structure at the fitting portion between the housing body and the lid member in order to suppress the infiltration of the liquid.

特開２０１４−１４３８７７号公報JP, 2014-143877, A

ところで、電気接続箱は、挿入方向が鉛直方向と交差した設置状態となる場合がある。この場合は、ブロックの上方向において対向するのが筐体側外周壁となり、蓋部材が対向する場合と比較して、ブロックとブロックの上方向において対向する部材間の隙間が狭く、筐体本体の内部空間のうち、上方向側に熱が滞留するという問題が生じた。   By the way, an electrical connection box may be in the installation state where the insertion direction intersected with the perpendicular direction. In this case, the casing side outer peripheral wall is opposed in the upper direction of the block, and the gap between the block and the opposing member in the upper direction of the block is narrower than in the case where the lid member is opposed. A problem arises in that heat is retained on the upper side of the internal space.

本発明は、上記の事情に鑑みてなされたものであって、筐体本体の内部空間に発生する熱を外部へ放出しつつ、外部からの液体の浸入を抑制することができる筐体および電気接続箱を提供することを目的とする。   The present invention has been made in view of the above circumstances, and it is possible to suppress the infiltration of a liquid from the outside while discharging the heat generated in the internal space of the housing body to the outside, and an electricity The purpose is to provide a junction box.

上記の目的を達成するために、本発明に係る筐体は、筐体側外周壁により筐体側開口部が形成された筐体本体と、蓋側外周壁により蓋側開口部が形成され、前記蓋側外周壁のうち、一部が前記筐体側開口部に挿入されることで、前記筐体本体に対して嵌合する蓋部材と、を備え、前記筐体本体および前記蓋部材は、挿入方向が鉛直方向と交差した状態で設置対象物に設置されており、前記筐体側外周壁は、挿入方向と直交する直交方向において前記蓋側外周壁と対向する筐体側嵌合部を有し、前記蓋側外周壁は、挿入方向と直交する直交方向において前記筐体側外周壁と対向する蓋側嵌合部を有し、前記筐体側嵌合部は、周方向における少なくとも一箇所に、直交方向において前記蓋側嵌合部側とは反対側に突出し、前記蓋側嵌合部との間に放熱空間部を形成する突出部が形成され、前記蓋側外周壁は、直交方向において前記突出部と対向して、直交方向において前記筐体側嵌合部側に突出するリブが形成され、前記放熱空間部は、前記筐体側外周壁における挿入方向側の端部と前記蓋側外周壁との間に形成された外部開口部において外部と連通し、前記蓋側外周壁における挿入方向側と反対側の離脱方向側の端部と前記筐体側外周壁との間に形成された内部開口部において前記筐体本体の内部空間と連通し、前記筐体側外周壁のうち、鉛直方向上側領域に形成される、ことを特徴とする。   In order to achieve the above object, in the case according to the present invention, a cover side opening is formed by a case main body in which the case side opening is formed by the case side outer peripheral wall, and a lid side outer peripheral wall; And a lid member fitted to the housing body by inserting a part of the side outer peripheral wall into the housing side opening, and the housing body and the lid member are inserted in the insertion direction. Is installed on the installation object in a state of intersecting the vertical direction, and the case-side outer peripheral wall has a case-side fitting portion facing the lid-side outer peripheral wall in the orthogonal direction orthogonal to the insertion direction, The lid-side outer peripheral wall has a lid-side fitting portion facing the housing-side outer peripheral wall in the orthogonal direction orthogonal to the insertion direction, and the housing-side fitting portion extends in at least one place in the circumferential direction in the orthogonal direction It projects to the side opposite to the lid side fitting portion side, and between the lid side fitting portion A protrusion forming a thermal space is formed, and the lid-side outer peripheral wall is formed with a rib which is opposed to the protrusion in the orthogonal direction and which protrudes to the housing-side fitting portion in the orthogonal direction, and the heat is released The space portion communicates with the outside at the external opening formed between the end portion on the housing side outer peripheral wall on the insertion direction side and the lid side outer peripheral wall, and the side opposite to the insertion direction side on the lid side outer peripheral wall The internal opening formed between the end portion on the disengaging direction side and the housing-side outer peripheral wall communicates with the internal space of the housing body, and is formed in the upper region in the vertical direction of the housing-side outer peripheral wall It is characterized by

また、上記の筐体では、前記リブは、挿入方向から見た場合に、前記突出部よりも前記蓋側外周壁の周方向に延在して形成され、前記筐体側外周壁における挿入方向側の端部のうち、少なくとも前記突出部を挟んで挿入方向において接触する、ことが望ましい。   Further, in the above housing, when viewed from the insertion direction, the rib is formed to extend in the circumferential direction of the lid-side outer peripheral wall than the projecting portion, and the insertion direction side of the housing-side outer peripheral wall It is desirable that at least the protrusion be in contact in the insertion direction among the end portions of.

上記の目的を達成するために、本発明に係る電気接続箱は、少なくとも１以上の電子部品と、内部に前記電子部品を収容する筐体と、を備え、前記筐体は、筐体側外周壁により筐体側開口部が形成された筐体本体と、蓋側外周壁により蓋側開口部が形成され、前記蓋側外周壁のうち、一部が前記筐体側開口部に挿入されることで、前記筐体本体に対して嵌合する蓋部材と、を備え、前記筐体本体および前記蓋部材は、挿入方向が鉛直方向と交差した状態で設置対象物に設置されており、前記筐体側外周壁は、挿入方向と直交する直交方向において前記蓋側外周壁と対向する筐体側嵌合部を有し、前記蓋側外周壁は、挿入方向と直交する直交方向において前記筐体側外周壁と対向する蓋側嵌合部を有し、前記筐体側嵌合部は、周方向における少なくとも一箇所に、直交方向において前記蓋側嵌合部側とは反対側に突出し、前記蓋側嵌合部との間に放熱空間部を形成する突出部が形成され、前記蓋側外周壁は、直交方向において前記突出部と対向して、直交方向において前記筐体側嵌合部側に突出するリブが形成され、前記放熱空間部は、前記筐体側外周壁における挿入方向側の端部と前記蓋側外周壁との間に形成された外部開口部において外部と連通し、前記蓋側外周壁における挿入方向側と反対側の離脱方向側の端部と前記筐体側外周壁との間に形成された内部開口部において前記筐体本体の内部空間と連通し、前記筐体側外周壁のうち、鉛直方向上側領域に形成される、ことを特徴とする。   In order to achieve the above object, an electrical connection box according to the present invention includes at least one or more electronic components and a case for housing the electronic components therein, and the case has a case-side outer peripheral wall The cover side opening is formed by the case main body in which the case side opening is formed and the cover side outer peripheral wall, and a part of the cover side outer peripheral wall is inserted into the case side opening, A lid member fitted to the housing body, the housing body and the lid member being installed on the installation object in a state where the insertion direction intersects the vertical direction, the housing outer periphery The wall has a housing side fitting portion facing the lid outer peripheral wall in the orthogonal direction orthogonal to the insertion direction, and the lid outer peripheral wall faces the housing outer peripheral wall in the orthogonal direction orthogonal to the insertion direction Lid side fitting portion, and the housing side fitting portion A protrusion is formed at at least one location in a direction orthogonal to the lid side fitting portion, and a protrusion forming a heat dissipation space between the lid side fitting portion and the lid side fitting portion is formed. The rib is formed to face the projection in the orthogonal direction and to protrude to the housing side fitting portion in the orthogonal direction, and the heat dissipation space portion is an end portion on the insertion direction side of the housing outer peripheral wall It communicates with the outside through the external opening formed between the lid-side outer peripheral wall, and between the end of the lid-side outer peripheral wall on the disengaging direction side opposite to the insertion direction and the housing-side outer peripheral wall It communicates with the internal space of the said case main body in the formed internal opening part, It forms in the perpendicular direction upper side area | region among the said housing | casing outer peripheral walls, It is characterized by the above-mentioned.

本発明に係る筐体および電気接続箱は、筐体本体の内部空間に発生する熱を外部へ放出しつつ、外部からの液体の浸入を抑制することができる。   The casing and the electrical connection box according to the present invention can suppress the infiltration of the liquid from the outside while discharging the heat generated in the internal space of the casing body to the outside.

図１は、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 the electrical connection box according to the embodiment. 図２は、実施形態に係る電気接続箱の底面図である。FIG. 2 is a bottom view of the electrical connection box according to the embodiment. 図３は、実施形態に係る電気接続箱の挿入方向が鉛直方向と交差した設置状態の正面図である。FIG. 3 is a front view of the installation state in which the insertion direction of the electrical connection box according to the embodiment intersects with the vertical direction. 図４は、図２のＢ部分の拡大斜視図である。FIG. 4 is an enlarged perspective view of a portion B of FIG. 図５は、実施形態に係る電気接続箱の挿入方向が鉛直方向と交差した設置状態における、図１のＡ−Ａ線に沿った断面図である。FIG. 5 is a cross-sectional view taken along the line A-A of FIG. 1 in an installed state in which the insertion direction of the electrical connection box according to the embodiment intersects the vertical direction. 図６は、図５のＣ部分の拡大図である。6 is an enlarged view of a portion C of FIG.

以下に、本発明に係る実施形態を図面に基づいて詳細に説明する。なお、この実施形態によりこの発明が限定されるものではない。また、下記の実施形態に係る構成要素には、当業者が置換可能かつ容易なもの、あるいは実質的に同一のものが含まれる。   Hereinafter, embodiments according to the present invention will be described in detail based on the drawings. The present invention is not limited by this embodiment. In addition, constituent elements according to the following embodiments include those that can be easily replaced by persons skilled in the art or those that are substantially the same.

［実施形態］
まず、実施形態に係る電気接続箱について説明する。図１は、実施形態に係る電気接続箱の斜視図である。図２は、実施形態に係る電気接続箱の底面図である。図３は、実施形態に係る電気接続箱の挿入方向が鉛直方向と交差した設置状態の正面図である。図４は、図２のＢ部分の拡大斜視図である。図５は、実施形態に係る電気接続箱の挿入方向が鉛直方向と交差した設置状態における、図１のＡ−Ａ線に沿った断面図である。図６は、図５のＣ部分の拡大図である。ここで、各図のＸ方向は、実施形態に係る電気接続箱の幅方向であり、水平方向である。Ｙ方向は、実施形態に係る電気接続箱の奥行方向であり、水平方向であり、幅方向と直交する方向である。Ｚ方向は、実施形態に係る電気接続箱の高さ方向であり、鉛直方向であり、直交方向であり、幅方向および奥行方向と直交する方向である。Ｘ１はフレームに対してロアカバーが挿入される挿入方向であり、Ｘ２は挿入方向と反対方向である離脱方向である。Ｚ１は上方向であり、Ｚ２は下方向である。 [Embodiment]
First, the electrical connection box according to the embodiment will be described. FIG. 1 is a perspective view of the electrical connection box according to the embodiment. FIG. 2 is a bottom view of the electrical connection box according to the embodiment. FIG. 3 is a front view of the installation state in which the insertion direction of the electrical connection box according to the embodiment intersects with the vertical direction. FIG. 4 is an enlarged perspective view of a portion B of FIG. FIG. 5 is a cross-sectional view taken along the line A-A of FIG. 1 in an installed state in which the insertion direction of the electrical connection box according to the embodiment intersects the vertical direction. 6 is an enlarged view of a portion C of FIG. Here, the X direction in each drawing is the width direction of the electrical connection box according to the embodiment, and is the horizontal direction. The Y direction is a depth direction of the electrical connection box according to the embodiment, is a horizontal direction, and is a direction orthogonal to the width direction. The Z direction is the height direction of the electrical connection box according to the embodiment, is the vertical direction, is the orthogonal direction, and is the direction orthogonal to the width direction and the depth direction. X1 is an insertion direction in which the lower cover is inserted into the frame, and X2 is a separation direction opposite to the insertion direction. Z1 is upward and Z2 is downward.

本実施形態に係る電気接続箱１は、自動車等の車両に搭載され、バッテリ等の電源から供給される電力を各種の電子部品等を介して、車両内に搭載される各種の電子機器に分配するものである。電気接続箱１は、例えば、車両のエンジンルームや車室内に設置される。電気接続箱１は、バッテリ等の電源と車両内に搭載される各種の電子機器との間に接続される。電気接続箱１は、電線と共にワイヤハーネスを構成してもよい。電気接続箱１は、収容する電子部品の種類に応じてジャンクションボックス、ヒューズボックス、リレーボックス等とも呼ばれる場合があるが、本実施形態ではこれらを総称して「電気接続箱」と呼ぶ。電気接続箱１は、図１〜図４に示すように、筐体２として、フレーム３と、ロアカバー４と、アッパーカバー５（破線で図示）と、を含んで構成され、突出部３４と、リブ４４と、放熱空間部８と、を備える。   The electric connection box 1 according to the present embodiment is mounted on a vehicle such as a car, and distributes the power supplied from a power source such as a battery to various electronic devices mounted in the vehicle via various electronic parts and the like. It is The electric connection box 1 is installed, for example, in an engine room or a vehicle compartment of a vehicle. The electrical connection box 1 is connected between a power source such as a battery and various electronic devices mounted in the vehicle. The electrical connection box 1 may constitute a wire harness together with a wire. The electrical connection box 1 may also be called a junction box, a fuse box, a relay box or the like depending on the type of electronic component to be accommodated, but in the present embodiment, these are collectively referred to as an "electrical connection box". As shown in FIGS. 1 to 4, the electrical connection box 1 includes a frame 3, a lower cover 4, and an upper cover 5 (shown by a broken line) as a housing 2, and a projecting portion 34, The rib 44 and the heat dissipation space 8 are provided.

筐体２は、内部に形成される内部空間６に１以上の電子部品を収容するものである。筐体２は、絶縁性の合成樹脂によって箱型形状に形成される。筐体２は、筐体本体としてのフレーム３と、蓋部材としてのロアカバー４と、アッパーカバー５と、を備える。筐体２は、フレーム３、ロアカバー４、およびアッパーカバー５が分割された３層分割構造となっている。筐体２は、下側からロアカバー４、フレーム３、アッパーカバー５の順番に積層して形成される。筐体２は、種々の形式の係止機構７を備え、フレーム３に対して、係止機構７を介して、ロアカバー４、アッパーカバー５が係止される。本実施形態に係る筐体２は、フレーム３に対してロアカバー４が挿入される挿入方向が鉛直方向と交差した状態で車両のエンジンルームや車室内の設置対象物に設置される。   The housing 2 accommodates one or more electronic components in an internal space 6 formed inside. The housing 2 is formed in a box shape by an insulating synthetic resin. The housing 2 includes a frame 3 as a housing body, a lower cover 4 as a lid member, and an upper cover 5. The housing 2 has a three-layer divided structure in which the frame 3, the lower cover 4, and the upper cover 5 are divided. The housing 2 is formed by laminating the lower cover 4, the frame 3, and the upper cover 5 in order from the lower side. The housing 2 includes various types of locking mechanisms 7, and the lower cover 4 and the upper cover 5 are locked to the frame 3 via the locking mechanisms 7. The housing 2 according to the present embodiment is installed in an installation object in an engine room or a vehicle compartment of a vehicle in a state where the insertion direction in which the lower cover 4 is inserted with respect to the frame 3 intersects the vertical direction.

フレーム３は、フレーム３の内部空間３ａの一部を構成する主たる部材である。フレーム３は、フレーム側外周壁３１における離脱方向側の端部に筐体側開口部であるフレーム側開口部３２、および挿入方向側の端部に挿入方向側開口部を有する筒形状に形成される。フレーム３は、内部空間３ａに複数のブロックが収容され、ブロックの内部空間に端子のカシメ部やバスバー等の電子部品が収容される。   The frame 3 is a main member that constitutes a part of the internal space 3 a of the frame 3. The frame 3 is formed in a tubular shape having a frame side opening 32 which is a housing side opening at an end on the frame side outer peripheral wall 31 in the removal direction, and an insertion side opening at an end on the insertion direction. . In the frame 3, a plurality of blocks are accommodated in the internal space 3 a, and electronic components such as caulking portions of terminals and bus bars are accommodated in the internal space of the blocks.

フレーム側外周壁３１は、筐体側外周壁であり、挿入方向と直交する直交方向（奥行方向および鉛直方向を含む）において後述する蓋側外周壁であるロアカバー側外周壁４１と対向する筐体側嵌合部であるフレーム側嵌合部３３を有する。フレーム側嵌合部３３は、フレーム側外周壁３１のうち、幅方向において挿入方向側の端部を含む領域である。フレーム側嵌合部３３は、周方向における少なくとも一箇所に、突出部３４が形成されている。本実施形態に係るフレーム側嵌合部３３は、フレーム側外周壁３１の鉛直方向上側領域に突出部３４が複数形成される。ここで、フレーム側外周壁３１の鉛直方向上側領域は、筐体２の鉛直方向の上方向側において離れた位置で、鉛直方向に向かって筐体２を見た場合に、フレーム側外周壁３１のうち視認することができる領域である。   The frame-side outer peripheral wall 31 is a housing-side outer peripheral wall, and the housing-side fitting is opposed to the lower cover-side outer peripheral wall 41, which is a lid-side outer peripheral wall described later in the orthogonal direction (including depth and vertical) orthogonal to the insertion direction. It has the frame side fitting part 33 which is a fitting part. The frame side fitting portion 33 is a region including the end portion on the insertion direction side in the width direction of the frame side outer peripheral wall 31. The frame side fitting portion 33 is formed with a protrusion 34 at at least one location in the circumferential direction. In the frame side fitting portion 33 according to the present embodiment, a plurality of projecting portions 34 are formed in the vertically upper region of the frame side outer peripheral wall 31. Here, the vertically upper region of the frame-side outer peripheral wall 31 is the frame-side outer peripheral wall 31 when the housing 2 is viewed in the vertical direction at a position away from the upper side in the vertical direction of the housing 2. Are areas that can be viewed.

突出部３４は、図４〜図６に示すように、フレーム３の内部空間３ａに発生する熱を外部へ放出するものである。突出部３４は、挿入方向と直交する直交方向において後述する蓋側嵌合部であるロアカバー側嵌合部４３側とは反対側に突出して形成されている。本実施形態における突出部３４は、フレーム側嵌合部３３の外周面より上方向に突出して形成されている。突出部３４は、下方向に開口を有する凹形状に形成されている。つまり、突出部３４は、フレーム側嵌合部３３の外周面より上方向に突出することで溝が形成される。突出部３４は、後述するリブ４４よりも上方向において突出して形成されており、溝がリブ４４よりも上方向側まで形成されている。   The protrusion part 34 discharges the heat which generate | occur | produces to the interior space 3a of the flame | frame 3 outside, as shown in FIGS. The projecting portion 34 is formed to protrude to the opposite side to the lower cover side fitting portion 43 side which is a lid side fitting portion described later in a direction orthogonal to the insertion direction. The projecting portion 34 in the present embodiment is formed to project upward from the outer peripheral surface of the frame side fitting portion 33. The protrusion 34 is formed in a concave shape having an opening in the lower direction. That is, a groove is formed by projecting the projecting portion 34 upward from the outer peripheral surface of the frame side fitting portion 33. The projecting portion 34 is formed to project in the upper direction than the rib 44 described later, and the groove is formed to the upper side of the rib 44.

ロアカバー４は、フレーム３のフレーム側開口部３２を閉塞する部材である。ロアカバー４は、挿入方向から見た場合に、外周形状がフレーム３の外周形状と同一（略同一も含む）に形成される。ロアカバー４は、筐体２の内部空間６の一部を構成する部材である。ロアカバー４は、ロアカバー側外周壁４１によりロアカバー側開口部４２を有する蓋状に形成される。ロアカバー４は、ロアカバー側外周壁４１のうち、ロアカバー側開口部４２側の一部がフレーム３のフレーム側開口部３２に挿入されることで、フレーム３に対して嵌合する。   The lower cover 4 is a member that closes the frame side opening 32 of the frame 3. The lower cover 4 is formed to have the same outer peripheral shape as the outer peripheral shape of the frame 3 (including substantially the same) when viewed from the insertion direction. The lower cover 4 is a member that constitutes a part of the internal space 6 of the housing 2. The lower cover 4 is formed in a lid shape having a lower cover side opening 42 by the lower cover side outer peripheral wall 41. The lower cover 4 is fitted to the frame 3 by inserting a part of the lower cover side outer peripheral wall 41 on the lower cover side opening 42 side into the frame side opening 32 of the frame 3.

ロアカバー側外周壁４１は、蓋側外周壁であり、挿入方向と直交する直交方向（奥行方向および鉛直方向を含む）において筐体側外周壁であるフレーム側外周壁３１と対向する蓋側嵌合部であるロアカバー側嵌合部４３を有する。ロアカバー側嵌合部４３は、ロアカバー側外周壁４１のうち、幅方向において離脱方向側の端部を含む領域である。ここで、ロアカバー側外周壁４１は、直交方向において突出部３４と対向して、フレーム側嵌合部３３側に突出するリブ４４が形成されている。   The lower cover-side outer peripheral wall 41 is a lid-side outer peripheral wall, and a lid-side fitting portion facing the frame-side outer peripheral wall 31 which is a housing-side outer peripheral wall in a direction orthogonal to the insertion direction (including depth direction and vertical direction). The lower cover side fitting portion 43 is provided. The lower cover side fitting portion 43 is a region including the end portion on the disengaging direction side in the width direction of the lower cover side outer peripheral wall 41. Here, the lower cover side outer peripheral wall 41 is formed with a rib 44 that protrudes toward the frame side fitting portion 33 so as to face the protrusion 34 in the orthogonal direction.

リブ４４は、外部からの水などの液体の浸入を抑制するものである。リブ４４は、ロアカバー側外周壁４１の全周に亘って形成されており、上下方向において各突出部３４と対向して形成されており、ロアカバー側外周壁４１の外周面から上方向に突出して形成されている。リブ４４は、フレーム３にロアカバー４が嵌合された状態である嵌合状態において、フレーム側外周壁３１の挿入方向側の端部と、フレーム側挿入方向において接触（一部接触を含む）する。つまり、リブ４４は、挿入方向側の端部のうち、少なくとも突出部３４を挟んで挿入方向において接触する。   The ribs 44 suppress the infiltration of liquid such as water from the outside. The rib 44 is formed over the entire circumference of the lower cover side outer peripheral wall 41 and is formed to face each of the protrusions 34 in the vertical direction, and protrudes upward from the outer peripheral surface of the lower cover side outer peripheral wall 41 It is formed. The rib 44 contacts (including partial contact with) the end portion on the insertion direction side of the frame outer peripheral wall 31 in the insertion direction on the frame side in the fitted state where the lower cover 4 is fitted to the frame 3 . That is, the rib 44 contacts at least the projecting portion 34 in the insertion direction among the end portions on the insertion direction side.

アッパーカバー５は、フレーム３の上方側開口部を閉塞する部材である。アッパーカバー５は、挿入方向から見た場合に、外周形状がフレーム３の外周形状と同一（略同一も含む）に形成される。アッパーカバー５は、筐体２の内部空間６の一部を構成する部材である。アッパーカバー５は、離脱方向側開口部を有する蓋状に形成される。   The upper cover 5 is a member that closes the upper opening of the frame 3. The upper cover 5 is formed to have the same outer peripheral shape as the outer peripheral shape of the frame 3 (including substantially the same) when viewed in the insertion direction. The upper cover 5 is a member that constitutes a part of the internal space 6 of the housing 2. The upper cover 5 is formed in a lid shape having a release direction side opening.

放熱空間部８は、フレーム３の内部空間３ａに発生する熱を外部へ放出するための空間である。放熱空間部８は、突出部３４とロアカバー側嵌合部４３によって囲われた空間である。放熱空間部８は、フレーム側外周壁３１における挿入方向側の端部とロアカバー側外周壁４１との間に形成された外部開口部８１において外部と連通する。放熱空間部８は、ロアカバー側外周壁４１における離脱方向側の端部とフレーム側外周壁３１との間に形成された内部開口部８２においてフレーム３の内部空間３ａと連通する。   The heat dissipation space 8 is a space for releasing the heat generated in the internal space 3 a of the frame 3 to the outside. The heat dissipation space 8 is a space surrounded by the protrusion 34 and the lower cover side fitting portion 43. The heat dissipation space 8 communicates with the outside through an external opening 81 formed between the end of the frame-side outer peripheral wall 31 in the insertion direction and the lower cover-side outer peripheral wall 41. The heat dissipation space 8 communicates with the internal space 3 a of the frame 3 at an internal opening 82 formed between the end on the lower cover side outer peripheral wall 41 in the removal direction and the frame side outer peripheral wall 31.

次に、本実施形態に係る電気接続箱１の組み立てについて説明する。まず、作業員は、図１に示すように、複数のブロックを、フレーム３の内部空間３ａに収容して固定する。次に、作業員は、ブロックの内部空間に端子のカシメ部やバスバー等の電子部品を収容する。次に、作業員は、フレーム３の電子部品に対して、電子部品と外部の電子機器とを接続する図示しない電線を電気的に接続する。次に、作業員は、フレーム３のフレーム側開口部３２にロアカバー４を取り付け、フレーム３の上方側開口部にアッパーカバー５を取り付ける。このとき、ロアカバー４は、ロアカバー側外周壁４１のうち、ロアカバー側開口部４２側の一部がフレーム３のフレーム側開口部３２に挿入されることで、フレーム３に対して嵌合する。次に、作業員は、組み立てた電気接続箱１を車両のエンジンルームや車室内の設置対象物に設置する。   Next, assembly of the electrical connection box 1 according to the present embodiment will be described. First, as shown in FIG. 1, the worker accommodates and fixes a plurality of blocks in the internal space 3 a of the frame 3. Next, the worker accommodates electronic parts such as crimped portions of the terminals and bus bars in the internal space of the block. Next, the worker electrically connects a wire (not shown) connecting the electronic component and the external electronic device to the electronic component of the frame 3. Next, the worker attaches the lower cover 4 to the frame side opening 32 of the frame 3 and attaches the upper cover 5 to the upper side opening of the frame 3. At this time, the lower cover 4 is fitted to the frame 3 by inserting a part of the lower cover side outer peripheral wall 41 on the lower cover side opening 42 side into the frame side opening 32 of the frame 3. Next, the worker installs the assembled electrical connection box 1 in the installation object in the engine room or vehicle compartment of the vehicle.

ここで、電気接続箱１が設置対象物に設置された状態で、電気接続箱１に収容された電子部品に通電を行うと、電子部品が熱を発生する。発生した熱は、電子部品がブロックの内部空間に収容されているので、周囲の空気を暖め、暖められた空気の大部分が内部空間３ａの上方向側の端部、すなわちフレーム側外周壁３１のうち上方向側の部分に向かって移動し、滞留することとなる。一方、電気接続箱１が設置対象物に設置された状態で、電気接続箱１に液体が付着する場合は、多くの場合、フレーム側外周壁３１の鉛直方向上側領域となる。フレーム側外周壁３１の鉛直方向上側領域に付着した液体は、車両の走行状態などにより、フレーム側外周壁３１上を移動する。   Here, when the electronic components accommodated in the electrical connection box 1 are energized in the state where the electrical connection box 1 is installed on the installation object, the electronic components generate heat. The generated heat heats the surrounding air since the electronic components are accommodated in the internal space of the block, and most of the warmed air is at the upper end of the internal space 3a, that is, the frame outer peripheral wall 31 And move toward the upper side portion and stay there. On the other hand, in the case where the liquid adheres to the electrical connection box 1 in a state where the electrical connection box 1 is installed on the installation object, in many cases, it is the vertically upper region of the frame outer peripheral wall 31. The liquid adhering to the vertically upper region of the frame outer peripheral wall 31 moves on the frame outer peripheral wall 31 depending on the traveling state of the vehicle and the like.

以上のように、本実施形態に係る筐体２および電気接続箱１は、フレーム側嵌合部３３に放熱空間部８を形成する突出部３４が形成され、さらに放熱空間部８に外部と連通する外部開口部８１とフレーム３の内部空間３ａと連通する内部開口部８２が形成されている。さらに、突出部３４がフレーム側外周壁３１のうち、鉛直方向上側領域に形成される。つまり、筐体２および電気接続箱１は、フレーム３の内部空間３ａに端子のカシメ部やバスバー等の電子部品から発生した熱を受熱した空気がフレーム側外周壁３１のうち上方向側の部分に滞留しても、受熱した空気が内部開口部８２を介してフレーム３の内部空間３ａと連通する放熱空間部８に流入し、外部開口部８１を介して連通する外部へ流出する（図６に示す矢印Ｓ）。従って、筐体２および電気接続箱１は、従来の筐体および電気接続箱のように放熱空間部８、内部開口部８２および外部開口部８１がない場合と比べて、フレーム３の内部空間３ａに発生する熱を外部へ放出することができる。   As described above, in the housing 2 and the electric connection box 1 according to the present embodiment, the projecting portion 34 forming the heat dissipation space 8 is formed in the frame side fitting portion 33, and the heat dissipation space 8 communicates with the outside. An external opening 81 and an internal opening 82 communicating with the internal space 3 a of the frame 3 are formed. Further, the projecting portion 34 is formed in the vertically upper region of the frame-side outer peripheral wall 31. That is, in the case 2 and the electrical connection box 1, the air which receives the heat generated from the electronic components such as the caulking portion of the terminal and the bus bar in the internal space 3 a of the frame 3 is a portion on the upper side Even if the air remains in the space, the heat-received air flows into the heat dissipation space 8 communicating with the internal space 3a of the frame 3 through the internal opening 82, and flows out to the communicating outside through the external opening 81 (FIG. 6). Arrows S). Therefore, the housing 2 and the electrical connection box 1 have the internal space 3 a of the frame 3 as compared with the case where the heat dissipation space 8, the internal opening 82 and the external opening 81 do not exist like the conventional housing and electrical connection box. The heat generated in can be released to the outside.

また、本実施形態に係る筐体２および電気接続箱１は、ロアカバー側外周壁４１に突出部３４と対向して、フレーム側嵌合部３３側に突出するリブ４４が形成されている。つまり、筐体２および電気接続箱１は、ロアカバー側外周壁４１のうち、鉛直方向上側領域に存在する液体が放熱空間部８に浸入しようとしても、リブ４４によって液体の浸入が阻止される。従って、筐体２および電気接続箱１は、外部と連通する放熱空間部８を形成しても、外部からの液体の浸入を抑制することができる。   Further, in the housing 2 and the electric connection box 1 according to the present embodiment, the lower cover side outer peripheral wall 41 is provided with a rib 44 which protrudes toward the frame side fitting portion 33 so as to face the projection 34. That is, in the case 2 and the electric connection box 1, even if the liquid present in the upper region in the vertical direction of the lower cover side outer peripheral wall 41 tries to enter the heat dissipation space 8, the liquid 44 is prevented from entering. Therefore, the casing 2 and the electrical connection box 1 can suppress the infiltration of the liquid from the outside even if the heat dissipation space 8 communicating with the outside is formed.

また、本実施形態に係る筐体２および電気接続箱１は、リブ４４が挿入方向から見た場合に、突出部３４よりもロアカバー側外周壁４１の周方向に延在して形成され、フレーム側外周壁３１における挿入方向側の端部のうち、少なくとも突出部３４を挟んで挿入方向において接触するように形成されている。従って、筐体２に対するロアカバー４の挿入方向への挿入量は、リブ４４がフレーム側外周壁３１におけるフレーム側開口部３２側の端部と接触することで、一定量に規制される。これにより、フレーム３に対して、ロアカバー４を挿入しすぎることを抑制することができ、フレーム３に対するロアカバー４の位置決めを容易に行うことができる。   Further, the housing 2 and the electrical connection box 1 according to the present embodiment are formed to extend in the circumferential direction of the lower cover side outer peripheral wall 41 more than the projecting portion 34 when the rib 44 is viewed from the insertion direction Of the end portions on the insertion direction side of the side outer peripheral wall 31, the end portions are formed so as to be in contact in the insertion direction with at least the projecting portion 34 interposed therebetween. Therefore, the amount of insertion of the lower cover 4 in the insertion direction with respect to the housing 2 is restricted to a fixed amount by the ribs 44 coming into contact with the end of the frame side outer peripheral wall 31 on the frame side opening 32 side. Thus, excessive insertion of the lower cover 4 into the frame 3 can be suppressed, and positioning of the lower cover 4 with respect to the frame 3 can be easily performed.

なお、本実施形態に係る筐体２および電気接続箱１は、上述した実施形態に限定されるものではなく、特許請求の範囲に記載された範囲で種々の変更が可能である。   In addition, the housing | casing 2 and the electrical connection box 1 which concern on this embodiment are not limited to embodiment mentioned above, A various change is possible in the range described in the claim.

以上の説明では、筐体２は、フレーム３、ロアカバー４、およびアッパーカバー５が分割された３層分割構造となっているものとして説明したがこれに限らない。筐体２は、例えば、フレーム側嵌合部３３に放熱空間部８を形成する突出部３４が形成されていればフレーム３とアッパーカバー５とが一体であってもよい。   In the above description, the case 2 is described as having a three-layer divided structure in which the frame 3, the lower cover 4, and the upper cover 5 are divided, but the invention is not limited thereto. In the housing 2, for example, the frame 3 and the upper cover 5 may be integrated as long as the projecting portion 34 forming the heat dissipation space 8 is formed in the frame side fitting portion 33.

また、筐体２は、フレーム側嵌合部３３に放熱空間部８を形成する突出部３４が形成されているものとして説明したがこれに限らない。筐体２は、例えば、アッパーカバー５の嵌合部に放熱空間部を形成する突出部が形成されていてもよい。   Moreover, although the housing | casing 2 demonstrated that the protrusion part 34 which forms the thermal radiation space part 8 in the flame | frame side fitting part 33 was formed, it does not restrict to this. The housing 2 may have, for example, a protrusion that forms a heat dissipation space in the fitting portion of the upper cover 5.

１ 電気接続箱
２ 筐体
３ フレーム
３ａ 内部空間
３１ フレーム側外周壁
３２ フレーム側開口部
３３ フレーム側嵌合部
３４ 突出部
４ ロアカバー
４１ ロアカバー側外周壁
４２ ロアカバー側開口部
４３ ロアカバー側嵌合部
４４ リブ
５ アッパーカバー
６ 内部空間
７ 係止機構
８ 放熱空間部
８１ 外部開口部
８２ 内部開口部 DESCRIPTION OF SYMBOLS 1 electrical connection box 2 case 3 frame 3a internal space 31 frame side outer peripheral wall 32 frame side opening 33 frame side fitting part 34 protrusion 4 lower cover 41 lower cover side outer peripheral wall 42 lower cover side opening 43 lower cover side fitting 44 Rib 5 Upper cover 6 Internal space 7 Locking mechanism 8 Heat dissipation space 81 External opening 82 Internal opening

Claims (3)

筐体側外周壁により筐体側開口部が形成された筐体本体と、
蓋側外周壁により蓋側開口部が形成され、前記蓋側外周壁のうち、一部が前記筐体側開口部に挿入されることで、前記筐体本体に対して嵌合する蓋部材と、
を備え、
前記筐体本体および前記蓋部材は、挿入方向が鉛直方向と交差した状態で設置対象物に設置されており、
前記筐体側外周壁は、挿入方向と直交する直交方向において前記蓋側外周壁と対向する筐体側嵌合部を有し、
前記蓋側外周壁は、挿入方向と直交する直交方向において前記筐体側外周壁と対向する蓋側嵌合部を有し、
前記筐体側嵌合部は、周方向における少なくとも一箇所に、直交方向において前記蓋側嵌合部側とは反対側に突出し、前記蓋側嵌合部との間に放熱空間部を形成する突出部が形成され、
前記蓋側外周壁は、直交方向において前記突出部と対向して、前記筐体側嵌合部側に突出するリブが形成され、
前記放熱空間部は、
前記筐体側外周壁における挿入方向側の端部と前記蓋側外周壁との間に形成された外部開口部において外部と連通し、
前記蓋側外周壁における挿入方向側と反対側の離脱方向側の端部と前記筐体側外周壁との間に形成された内部開口部において前記筐体本体の内部空間と連通し、
前記筐体側外周壁のうち、鉛直方向上側領域に形成される、
ことを特徴とする筐体。 A case body having a case side opening formed by the case side outer peripheral wall;
A lid member having a lid-side opening formed by the lid-side outer peripheral wall, and a part of the lid-side outer peripheral wall being inserted into the housing-side opening, thereby fitting to the housing main body;
Equipped with
The case body and the lid member are installed on the installation object in a state in which the insertion direction intersects the vertical direction,
The housing-side outer peripheral wall has a housing-side fitting portion facing the lid-side outer peripheral wall in a direction perpendicular to the insertion direction,
The lid-side outer peripheral wall has a lid-side fitting portion facing the housing-side outer peripheral wall in a direction perpendicular to the insertion direction,
The housing side fitting portion protrudes in at least one place in the circumferential direction to the side opposite to the lid side fitting portion in the orthogonal direction, and forms a heat radiation space portion with the lid side fitting portion. Part is formed,
The lid-side outer peripheral wall is formed with a rib that protrudes toward the housing-side fitting portion so as to face the protrusion in the orthogonal direction.
The heat dissipation space portion is
It communicates with the outside at the external opening formed between the end on the insertion direction side of the outer peripheral wall on the housing side and the outer peripheral wall on the lid side,
Communicating with the internal space of the casing body at an internal opening formed between the end portion on the disengaging direction side opposite to the insertion direction side of the lid side peripheral wall and the casing side peripheral wall;
It is formed in a vertically upper region of the case-side outer peripheral wall,
An enclosure characterized by 前記リブは、
挿入方向から見た場合に、前記突出部よりも前記蓋側外周壁の周方向に延在して形成され、前記筐体側外周壁における挿入方向側の端部のうち、少なくとも前記突出部を挟んで挿入方向において接触する、
請求項１に記載の筐体。 The rib is
When viewed from the insertion direction, the cover is formed to extend in the circumferential direction of the lid-side outer peripheral wall more than the projection, and at least the projection is held among the end portions on the insertion direction side of the housing-side outer peripheral wall Contact in the insertion direction at
The housing according to claim 1. 少なくとも１以上の電子部品と、
内部に前記電子部品を収容する筐体と、を備え、
前記筐体は、
筐体側外周壁により筐体側開口部が形成された筐体本体と、
蓋側外周壁により蓋側開口部が形成され、前記蓋側外周壁のうち、一部が前記筐体側開口部に挿入されることで、前記筐体本体に対して嵌合する蓋部材と、
を備え、
前記筐体本体および前記蓋部材は、挿入方向が鉛直方向と交差した状態で設置対象物に設置されており、
前記筐体側外周壁は、挿入方向と直交する直交方向において前記蓋側外周壁と対向する筐体側嵌合部を有し、
前記蓋側外周壁は、挿入方向と直交する直交方向において前記筐体側外周壁と対向する蓋側嵌合部を有し、
前記筐体側嵌合部は、周方向における少なくとも一箇所に、直交方向において前記蓋側嵌合部側とは反対側に突出し、前記蓋側嵌合部との間に放熱空間部を形成する突出部が形成され、
前記蓋側外周壁は、直交方向において前記突出部と対向して、前記筐体側嵌合部側に突出するリブが形成され、
前記放熱空間部は、
前記筐体側外周壁における挿入方向側の端部と前記蓋側外周壁との間に形成された外部開口部において外部と連通し、
前記蓋側外周壁における挿入方向側と反対側の離脱方向側の端部と前記筐体側外周壁との間に形成された内部開口部において前記筐体本体の内部空間と連通し、
前記筐体側外周壁のうち、鉛直方向上側領域に形成される、
ことを特徴とする電気接続箱。 At least one or more electronic components,
And a case for housing the electronic component therein.
The housing is
A case body having a case side opening formed by the case side outer peripheral wall;
A lid member having a lid-side opening formed by the lid-side outer peripheral wall, and a part of the lid-side outer peripheral wall being inserted into the housing-side opening, thereby fitting to the housing main body;
Equipped with
The case body and the lid member are installed on the installation object in a state in which the insertion direction intersects the vertical direction,
The housing-side outer peripheral wall has a housing-side fitting portion facing the lid-side outer peripheral wall in a direction perpendicular to the insertion direction,
The lid-side outer peripheral wall has a lid-side fitting portion facing the housing-side outer peripheral wall in a direction perpendicular to the insertion direction,
The housing side fitting portion protrudes in at least one place in the circumferential direction to the side opposite to the lid side fitting portion in the orthogonal direction, and forms a heat radiation space portion with the lid side fitting portion. Part is formed,
The lid-side outer peripheral wall is formed with a rib that protrudes toward the housing-side fitting portion so as to face the protrusion in the orthogonal direction.
The heat dissipation space portion is
It communicates with the outside at the external opening formed between the end on the insertion direction side of the outer peripheral wall on the housing side and the outer peripheral wall on the lid side,
Communicating with the internal space of the casing body at an internal opening formed between the end portion on the disengaging direction side opposite to the insertion direction side of the lid side peripheral wall and the casing side peripheral wall;
It is formed in a vertically upper region of the case-side outer peripheral wall,
Electrical connection box characterized by
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0727238U (en) * 1993-10-25 1995-05-19 矢崎総業株式会社 Electrical junction box
JPH0936568A (en) * 1995-07-24 1997-02-07 Yazaki Corp Water stop structure of box cover
JP2007043855A (en) * 2005-08-04 2007-02-15 Yazaki Corp Electrical junction box
JP2014143877A (en) * 2013-01-25 2014-08-07 Yazaki Corp Case
JP2014158385A (en) * 2013-02-18 2014-08-28 Yazaki Corp Electric connection box
JP2015233353A (en) * 2014-06-09 2015-12-24 矢崎総業株式会社 Electric connection box
WO2016175187A1 (en) * 2015-04-27 2016-11-03 矢崎総業株式会社 Electrical connection box and wire harness

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0727238U (en) * 1993-10-25 1995-05-19 矢崎総業株式会社 Electrical junction box
JPH0936568A (en) * 1995-07-24 1997-02-07 Yazaki Corp Water stop structure of box cover
JP2007043855A (en) * 2005-08-04 2007-02-15 Yazaki Corp Electrical junction box
JP2014143877A (en) * 2013-01-25 2014-08-07 Yazaki Corp Case
JP2014158385A (en) * 2013-02-18 2014-08-28 Yazaki Corp Electric connection box
JP2015233353A (en) * 2014-06-09 2015-12-24 矢崎総業株式会社 Electric connection box
WO2016175187A1 (en) * 2015-04-27 2016-11-03 矢崎総業株式会社 Electrical connection box and wire harness

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