JP2016127640A - Hermetically sealed box and hermetically sealing structure - Google Patents

Hermetically sealed box and hermetically sealing structure Download PDF

Info

Publication number
JP2016127640A
JP2016127640A JP2014264768A JP2014264768A JP2016127640A JP 2016127640 A JP2016127640 A JP 2016127640A JP 2014264768 A JP2014264768 A JP 2014264768A JP 2014264768 A JP2014264768 A JP 2014264768A JP 2016127640 A JP2016127640 A JP 2016127640A
Authority
JP
Japan
Prior art keywords
packing
main body
holding groove
body member
fastening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2014264768A
Other languages
Japanese (ja)
Inventor
慎 池田
Shin Ikeda
慎 池田
竜介 栫
Ryusuke Koshirae
竜介 栫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Furukawa Electric Co Ltd
Furukawa Automotive Systems Inc
Original Assignee
Furukawa Electric Co Ltd
Furukawa Automotive Systems Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Furukawa Electric Co Ltd, Furukawa Automotive Systems Inc filed Critical Furukawa Electric Co Ltd
Priority to JP2014264768A priority Critical patent/JP2016127640A/en
Publication of JP2016127640A publication Critical patent/JP2016127640A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Gasket Seals (AREA)
  • Casings For Electric Apparatus (AREA)
  • Connection Or Junction Boxes (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a satisfactory hermetically sealed state by eliminating a portion where a pressure to a packing tends to be weak in a hermetically sealed box such as an electric connection box that is mounted in a vehicle.SOLUTION: An electric connection box 11 comprises a main body member 21 and a lid member 31. The lid member 31 includes a fastening part that forms a fastener to be coupled to the main body member 21, and a holding groove 35 that holds a packing 41 for sealing with the main body member 21. On a bottom of a corner away from the fastening part in the holding groove 35, a raised bottom forming part 36 is provided for raising a bottom face level rather than a bottom face level of a portion corresponding to the fastening part.SELECTED DRAWING: Figure 1

Description

この発明は、たとえば車両に搭載される電気接続箱のような密封箱に関し、より詳しくは、良好な密封状態を得られるような密封箱に関する。   The present invention relates to a sealed box such as an electric connection box mounted on a vehicle, and more particularly to a sealed box capable of obtaining a good sealed state.

密封箱では密封性が要求される。密封性は、圧縮されたパッキンが圧縮を復元しようとする反発力で隙間を遮断することで得られる。   Sealed boxes are required to be sealed. The sealing property is obtained by blocking the gap with a repulsive force that the compressed packing tries to restore the compression.

パッキンの圧縮は、密封箱の蓋部材を本体部材に対して嵌めて、本体部材と蓋部材に設けられた留め具で留めることによってなされる。パッキンは均一に圧縮されることが望ましいが、密封箱の材質や形状によっては、蓋部材にねじれ変形が生じて留め具に近い部分と留め具から遠い部分でパッキンに加える押圧力に差が生じることがある。   The packing is compressed by fitting the lid member of the sealed box to the main body member and fastening it with the fasteners provided on the main body member and the lid member. It is desirable that the packing is compressed uniformly, but depending on the material and shape of the sealed box, the lid member may be twisted and deformed, causing a difference in the pressing force applied to the packing between the portion close to the fastener and the portion far from the fastener. Sometimes.

このような問題を解消する対策の一つとして、パッキンを押圧する力が開口全体にわたって均等に作用するように留め具を配設することが考えられる。   As one of countermeasures for solving such a problem, it is conceivable to arrange the fasteners so that the force pressing the packing acts evenly over the entire opening.

しかし、前述の電気接続箱のような密封箱では、留め具の配置に工夫を凝らすような対策を取ることはできない。これは、電気接続箱の形状が年々複雑になってきている上に、電気接続箱を取り付ける部位のスペースが減ってきているため、留め具を設ける位置がおのずと制限されるからである。また、電気接続箱の形状が複雑になり、取り付けスペースに余裕がないことから、留め具の個数を増やそうとしても設ける留め具の個数は制限されてしまう。   However, in a sealed box such as the above-mentioned electrical junction box, it is not possible to take measures to devise the arrangement of the fasteners. This is because the shape of the electrical junction box is becoming more and more complex year by year, and the space where the electrical junction box is attached is reduced, so that the position where the fastener is provided is naturally limited. In addition, since the shape of the electrical junction box becomes complicated and there is no room for installation space, the number of fasteners to be provided is limited even if the number of fasteners is increased.

このような事情があるので、電気接続箱のような密封箱では、高い密封性を得ることが困難な場合があり、十分な止水性を得られない懸念があった。特に、大きな車種に搭載する電気接続箱では、大きな電気接続箱が必要であり、押圧力のばらつきによる問題が顕著になる。   Because of such circumstances, there is a concern that it is difficult to obtain high sealing performance in a sealed box such as an electric junction box, and sufficient water-stopping property cannot be obtained. In particular, in an electrical junction box mounted on a large vehicle type, a large electrical junction box is required, and the problem due to variations in pressing force becomes significant.

下記特許文献１には、蓋部材と本体部材との間の密封圧力を均一化する防水箱が開示されている。この防水箱は、略直方体状の本体部材と、パッキンを備える蓋部材で構成され、本体部材の上端開口部における留め具を有しない相対向する２辺であって長さの長い辺に、両端部から中央部にかけて弓なりに徐々に高さを増加する壁状の山形部分を備えている。この山形部分を有することにより、蓋部材を被せて留め具を留めた時に、蓋部材がその可撓性によって全体として弓なりに湾曲変形し山形部分の形状に倣って本体部材を覆うことになる。そしてこのときに、蓋部材が留め具によって引っ張られるため山形部分が梃子の支点の如く働いて大きな押圧力を発揮し、山形部分とそれ以外の部分で実質上均一な密封状態を付与する、とされている。   Patent Document 1 below discloses a waterproof box that equalizes the sealing pressure between the lid member and the main body member. This waterproof box is composed of a substantially rectangular parallelepiped main body member and a lid member provided with a packing, and has two opposite sides that do not have a fastener at the upper end opening of the main body member, and long ends on both sides. It has a wall-shaped chevron that gradually increases in height from the center to the center. By having this angle portion, when the cover member is covered and the fastener is fastened, the cover member is bent and deformed like a bow as a whole due to its flexibility and covers the main body member following the shape of the angle portion. And at this time, since the lid member is pulled by the fastener, the mountain portion works like a fulcrum of the lever and exerts a large pressing force, giving a substantially uniform sealed state at the mountain portion and other portions. Has been.

しかし、このように本体部材に山形部分を形成する構成では、蓋部材を湾曲変形させるため、パッキンを保持する溝も変形する。このため、パッキンの圧縮が所望のとおりに行えず、密封性が不十分になるおそれがある。しかも、本体部材は電気部品などの物品を収容する部分であるので、山形部分の存在によって内部を見渡しにくくなったり、作業に際して手が当たったりするため、メンテナンスなどの作業がしにくいという難点がある。また、本来ならなくてもよい山形部分が上端開口部にあることによって、本体部材が嵩高いものとなって、管理等においてスペースやコストなどの面で不都合が生じる。   However, in the configuration in which the chevron portion is formed in the main body member in this manner, the groove for holding the packing is also deformed in order to deform the lid member in a curved manner. For this reason, compression of packing cannot be performed as desired and there exists a possibility that sealing performance may become inadequate. In addition, since the main body member is a part that accommodates an article such as an electrical component, the presence of the mountain-shaped part makes it difficult to look inside, or a hand hits the work, which makes it difficult to perform work such as maintenance. . In addition, since the upper-end opening has a mountain portion that does not have to be the original, the main body member becomes bulky, resulting in inconvenience in terms of space and cost in management and the like.

特開平９−２４０７１７号公報JP-A-9-240717

そこでこの発明は、押圧力が弱くなりがちな部位をなくして、良好な密封状態を得られるようにすることを主な目的とする。   Accordingly, the main object of the present invention is to eliminate a portion where the pressing force tends to be weak and to obtain a good sealed state.

そのための手段は、本体部材と蓋部材を備え、該蓋部材には、前記本体部材に対して結合するための留め部と、前記本体部材との間でシールするパッキンを保持する保持溝を備えた密封箱であって、前記保持溝における前記留め部から離れた部位または非直線状部位の底部に、前記留め部に対応する部位の底面レベルよりも底面レベルを上げる上げ底形成部を備えた密封箱である。   Means therefor include a main body member and a lid member, and the lid member includes a fastening portion for coupling to the main body member, and a holding groove for holding a packing for sealing between the main body member. A sealed box having a raised bottom forming portion that raises a bottom surface level higher than a bottom surface level of a portion corresponding to the fastening portion at a bottom portion of a portion of the holding groove away from the fastening portion or a non-linear portion. It is a box.

前記「離れた部位」とは、上げ底形成部のない状態において留め部から距離が離れていることによってパッキンを圧縮する押圧力が低くなる部位である。   The “separated part” is a part where the pressing force for compressing the packing is reduced by the distance from the fastening part in a state where there is no raised bottom forming part.

前記「非直線状の部位」とは、保持溝がのびる方向がカーブしたりＬ字状に曲がったりしている部位である。   The “non-linear portion” is a portion where the direction in which the holding groove extends is curved or bent in an L shape.

前記「底面レベル」とは、保持溝の底面の高さに関する位置のことであり、保持溝が下に開口する場合にはその天井面の高さ、保持溝が上に開口する場合にはその底面の高さを意味し、前記「底面レベルを上げる」とは、それぞれ開口側にせり出すことである。   The “bottom surface level” is a position related to the height of the bottom surface of the holding groove. When the holding groove opens downward, the height of the ceiling surface, and when the holding groove opens upward, This means the height of the bottom surface, and the above-mentioned “increasing the bottom surface level” means to protrude to the opening side.

前記上げ底形成部は、保持溝と一体に形成されているものでも、別部材で形成されるものでも、いずれでもよい。   The raised bottom forming portion may be formed integrally with the holding groove or may be formed of a separate member.

この発明の上げ底形成部は、保持溝における留め部から離れた部位または非直線状部位の底部、つまり保持溝における留め具でパッキンを押圧する押圧力よりもパッキンの反発力が強くなりがちな部位の底部で、パッキンの位置をずらして、パッキンが本体部材の対向部位に強く当たるようにする。これにより、パッキンを十分に圧縮して、密封性を得る。   The raised bottom forming portion of the present invention is a portion where the packing repulsive force tends to be stronger than the pressing force that presses the packing with the fastener in the holding groove, that is, the bottom of the holding groove or the non-linear portion. At the bottom, the position of the packing is shifted so that the packing strongly hits the opposing part of the main body member. Thereby, a packing is fully compressed and sealing property is acquired.

課題を解決するための別の手段は、本体部材と蓋部材を備え、該蓋部材には、前記本体部材に対して結合するための留め部と、前記本体部材との間でシールするパッキンを保持する保持溝を備えた密封箱であって、前記保持溝の底部に、前記留め部から離れた部位ほど、または非直線状で形状が曲がっている部位ほど、前記留め部に対応する部位の底面レベルよりも漸次底面レベルを上げる上げ底形成部を備えた密封箱である。   Another means for solving the problem includes a main body member and a lid member, and the lid member has a fastening portion for coupling to the main body member and a packing for sealing between the main body member. A sealed box having a holding groove to hold, a part of the holding groove that is farther away from the fastening part or a part that is non-linear and bent at a bottom part of the part corresponding to the fastening part. It is a sealed box having a raised bottom forming portion that gradually raises the bottom surface level from the bottom surface level.

前記「離れた部位」とは、上げ底形成部のない状態において留め部から距離が離れていることによってパッキンを圧縮する押圧力が低くなる部位である。   The “separated part” is a part where the pressing force for compressing the packing is reduced by the distance from the fastening part in a state where there is no raised bottom forming part.

前記「非直線状で形状が曲がっている部位」とは、保持溝がのびる方向がカーブしたりＬ字状に曲がったりしている部位である。   The “parts that are non-linear and bent in shape” are parts in which the direction in which the holding groove extends is curved or bent in an L shape.

前記「底面レベル」とは、保持溝の底面の高さに関する位置のことであり、保持溝が下に開口する場合にはその天井面の高さ、保持溝が上に開口する場合にはその底面の高さを意味し、前記「底面レベルを上げる」とは、それぞれ開口側にせり出すことである。   The “bottom surface level” is a position related to the height of the bottom surface of the holding groove. When the holding groove opens downward, the height of the ceiling surface, and when the holding groove opens upward, This means the height of the bottom surface, and the above-mentioned “increasing the bottom surface level” means to protrude to the opening side.

前記上げ底形成部は、保持溝と一体に形成されるものでも、別部材で形成されるものでも、いずれでもよい。   The raised bottom forming portion may be formed integrally with the holding groove or may be formed of a separate member.

この発明の上げ底形成部は、保持溝における留め部から離れた部位ほど、または非直線状で形状が曲がっている部位ほど、つまり保持溝における留め具でパッキンを押圧する押圧力よりもパッキンの反発力が強くなりがちな部位ほど、パッキンの位置を徐々にずらす。これによってパッキンが、その反発力が強い部分ほど本体部材の対向部位に強く当たるようにして、パッキンを十分に、しかもより均等に圧縮して、密封性を得る。   The raised bottom forming portion of the present invention is more repulsive than the pressing force that presses the packing with the fastener in the holding groove, as it is away from the holding portion in the holding groove, or as the non-linear shape is bent. The part of the packing that is likely to become stronger is gradually shifted in position. As a result, the packing is sufficiently and more evenly compressed so that the portion of the packing having a stronger repulsive force hits the opposing portion of the main body member to obtain a sealing property.

この発明の態様として、前記上げ底形成部の厚さを、前記保持溝の底面レベルを全体で同一としたときの前記蓋部材の仮想撓み形状に従って漸次変化するものとすることができる。この構成では、上げ底形成部の厚みが仮想撓み形状、つまりパッキンの反発力が強まる程度に応じて変化するので、パッキンを全体的に均等に圧縮することができ、留め部に近い部位とそうでない部位との間での密封性も得られる。   As an aspect of the present invention, the thickness of the raised bottom forming portion can be gradually changed according to the virtual deflection shape of the lid member when the bottom surface level of the holding groove is the same as the whole. In this configuration, the thickness of the raised bottom forming portion changes according to the virtual deflection shape, that is, the degree to which the repulsive force of the packing is increased, so that the packing can be compressed uniformly as a whole, and the portion close to the fastening portion and not so A sealing property between the parts is also obtained.

また、前述の３つの発明の態様として、前記留め部を複数備え、異なる方向に向く面に形成された２個の前記留め部同士を結ぶ仮想基準線から離れた隅角部の前記保持溝に、前記上げ底形成部を備えることができる。この構成では、仮想基準線という概念を設けて、これを基準にして隅角部を、上げ底形成部を備える部位を的確に設定するので、パッキンの十分な圧縮を確実に行えるようにすることが可能である。   Further, as an aspect of the above-described three inventions, the holding groove in a corner portion that is provided with a plurality of the fastening portions and is separated from a virtual reference line that connects the two fastening portions formed on surfaces facing in different directions is provided. The raised bottom forming part can be provided. In this configuration, the concept of a virtual reference line is provided, and the corner portion is set with reference to this, and the portion having the raised bottom forming portion is accurately set, so that sufficient compression of the packing can be surely performed. Is possible.

課題を解決するための別の手段は、本体部材と、該本体部材に被せる蓋部材と、これらを結合する留め具を備え、前記蓋部材には、前記本体部材との間でシールするパッキンを保持する保持溝を備え、前記本体部材には前記パッキンに圧接する圧接部を備えた密封構造であって、前記保持溝が前記パッキンを収容する深さであり、前記保持溝における前記留め具による前記パッキンを押圧する押圧力よりも前記パッキンの反発力が強い部位の底部に形成され、前記パッキンを他の部位よりも圧接部側にせり出させる上げ底形成部と、前記圧接部に形成され、前記パッキンの対向面に食い込み全体が同じ高さの圧接面を備えた密封構造である。   Another means for solving the problem includes a main body member, a lid member that covers the main body member, and a fastener that couples the main body member, and the lid member includes a packing that seals between the main body member. A holding structure that includes a holding groove, and the main body member includes a pressure contact portion that press-contacts the packing, wherein the holding groove has a depth in which the packing is accommodated, and depends on the fastener in the holding groove. Formed at the bottom of the part where the repulsive force of the packing is stronger than the pressing force for pressing the packing, and formed at the pressure contact part, and a raised bottom forming part for projecting the packing to the pressure contact part side than the other part, It is a sealing structure in which the entire surface bites into the facing surface of the packing has a pressure contact surface having the same height.

前記「留め具による前記パッキンを押圧する押圧力よりも前記パッキンの反発力が強い部位」とは、上げ底形成部のない状態においてパッキンを圧縮する押圧力が低くパッキンの反発力で押し返されて蓋部材が撓む部位である。   The “part where the repelling force of the packing is stronger than the pressing force of pressing the packing by the fastener” means that the pressing force of compressing the packing is low in a state where there is no raised bottom forming portion and is pushed back by the repelling force of the packing. This is the portion where the lid member bends.

前記上げ底形成部は、保持溝と一体に形成されるものでも、別部材で形成されるものでも、いずれでもよい。   The raised bottom forming portion may be formed integrally with the holding groove or may be formed of a separate member.

この発明の保持溝はパッキンを収容して保形し、底部の上げ底形成部でパッキンの一部、つまりパッキンを押圧する押圧力よりもパッキンの反発力が強い部位、換言すればパッキンを圧縮できない又は圧縮できてもつぶれが少ない部位、たとえば留め具から離れた部位または非直線状部位に対応する部位を本体部材の圧接部側にせり出させる。圧接部は全体が同じ高さの圧接面を有し、本体部材に蓋部材を被せて留め具で止めたときに、圧接面は保持溝に内に進入し保持溝内のパッキンの対向面に食い込んでパッキンを圧縮する。これによって、パッキンを押圧する押圧力よりもパッキンの反発力が強くなりがちな部位での圧縮を確実に行う。この結果、パッキンを十分に圧縮して、良好な密封性を得ることができる。圧縮面はパッキンに食い込み、パッキンは保持溝に収容されているので、パッキンのはみ出しなどがなく安定したシールが可能である。また、圧縮面については同じ高さであるので、保持溝の上げ底形成部のみの設計で、良好な密封性を得られることになる。   The retaining groove of the present invention accommodates and retains the packing, and a part of the packing at the raised bottom forming portion, that is, a portion where the repulsive force of the packing is stronger than the pressing force pressing the packing, in other words, the packing cannot be compressed. Alternatively, a portion that can be compressed but less crushed, for example, a portion that is separated from the fastener or a portion corresponding to a non-linear portion is protruded to the pressure contact portion side of the main body member. The pressure contact part as a whole has a pressure contact surface of the same height, and when the main body member is covered with a lid member and fixed with a fastener, the pressure contact surface enters the holding groove and faces the packing facing surface in the holding groove. Gently compress the packing. This ensures compression at a portion where the repulsive force of the packing tends to be stronger than the pressing force pressing the packing. As a result, it is possible to sufficiently compress the packing and obtain good sealing performance. Since the compressed surface bites into the packing and the packing is accommodated in the holding groove, there is no protrusion of the packing and a stable seal is possible. In addition, since the compression surfaces have the same height, good sealing performance can be obtained by designing only the raised bottom forming portion of the holding groove.

この発明によれば、上げ底形成部がパッキンにおける押圧力の弱くなりがちな部位を対向側にせり出させて本体部材の対向部位に対する押圧力を高める。これによってパッキンの十分な圧縮を可能にし、良好な密封状態を得られるようにする。特に、車両に搭載される電気接続箱においては、その形状や搭載スペースの関係上、良好な密封状態を得ることが困難であったが、上げ底形成部を形成するという簡素な構成によってこのような難点を解消し、確実な止水性を得られる。   According to the present invention, the raised bottom forming portion protrudes the portion of the packing that tends to have a weak pressing force to the opposite side, thereby increasing the pressing force on the opposite portion of the main body member. This allows for sufficient compression of the packing and provides a good sealing condition. In particular, in an electrical junction box mounted on a vehicle, it has been difficult to obtain a good sealed state due to its shape and mounting space, but such a simple configuration that forms a raised bottom forming portion has such a configuration. The difficulty can be solved and reliable water stoppage can be obtained.

しかも、上げ底形成部は蓋部材に形成されるものであるので、本体部材には既存のものを使用することができ、経済的であるという利点も有する。   Moreover, since the raised bottom forming portion is formed on the lid member, an existing one can be used for the main body member, and there is an advantage that it is economical.

また、上げ底形成部は保持溝に形成され、保持溝は従来技術とは異なり湾曲変形されるものではないので、パッキンの圧縮を所望のとおりに行うことができ、十分な密封性を得られる。   Further, since the raised bottom forming portion is formed in the holding groove, and the holding groove is not curved and deformed unlike the prior art, the packing can be compressed as desired, and sufficient sealing performance can be obtained.

さらに、上げ底形成部は保持溝という奥まった形状の底部に形成されるので、従来技術とは異なり本体部材の内部を見渡したり本体部材内に作業をしたりするのを阻害することはない。この結果、メンテナンス等の作業性を確保できる。そのうえ、本体部材はもちろん、蓋部材も嵩高いものとなるようなことはなく、管理等も簡便である。   Further, since the raised bottom forming portion is formed in a deep bottom portion called a holding groove, unlike the prior art, it does not obstruct the inside of the main body member or work in the main body member. As a result, workability such as maintenance can be ensured. In addition, the cover member is not bulky as well as the main body member, and management and the like are simple.

要部の縦断面図。The longitudinal cross-sectional view of the principal part. 電気接続箱の分解斜視図。The exploded perspective view of an electric junction box. 電気接続箱の平面図。The top view of an electric junction box. 密封構造における留め具を有する部分の縦断面図。The longitudinal cross-sectional view of the part which has a fastener in a sealing structure. 密封構造の縦断面図。The longitudinal cross-sectional view of a sealing structure. 密封構造における長手方向に沿って切断した縦断面図。The longitudinal cross-sectional view cut | disconnected along the longitudinal direction in a sealing structure. 密封構造における長手方向に沿って切断した要部の縦端面図。The longitudinal end view of the principal part cut | disconnected along the longitudinal direction in a sealing structure. 密封構造における長手方向に沿って切断した要部の縦端面図。The longitudinal end view of the principal part cut | disconnected along the longitudinal direction in a sealing structure. 密封構造の保持溝部分における長手方向に沿って切断した要部の縦端面図。The longitudinal end view of the principal part cut | disconnected along the longitudinal direction in the holding groove part of a sealing structure. 密封構造の保持溝部分における要部の縦断面図。The longitudinal cross-sectional view of the principal part in the holding groove part of a sealing structure. 保持溝と留め部を示す平面図。The top view which shows a holding groove and a fastening part. 図１１の保持溝に備えられた上げ底形成部を示す断面図。Sectional drawing which shows the raising bottom formation part with which the holding groove of FIG. 11 was equipped. 図１１の保持溝に備えられた上げ底形成部を示す断面図。Sectional drawing which shows the raising bottom formation part with which the holding groove of FIG. 11 was equipped.

この発明を実施するための一形態を、以下図面を用いて説明する。
図面において、図１は要部を示す縦断面図、図２は密封箱の一例としての車両の電気接続箱の斜視図、図３はその平面図である。図４〜図１０は密封構造の断面図であり、図１１は上げ底形成部を備える部位を説明するための説明図、図１２、図１３は、図１１の保持溝の上げ底形成部を示す断面図である。 An embodiment for carrying out the present invention will be described below with reference to the drawings.
In the drawings, FIG. 1 is a longitudinal sectional view showing a main part, FIG. 2 is a perspective view of an electric junction box of a vehicle as an example of a sealed box, and FIG. 3 is a plan view thereof. 4 to 10 are cross-sectional views of the sealing structure, FIG. 11 is an explanatory view for explaining a portion having a raised bottom forming portion, and FIGS. 12 and 13 are cross-sectional views showing the raised bottom forming portion of the holding groove in FIG. FIG.

図１、図２に示したように電気接続箱１１は、電気部品（図示せず）を収容する本体部材２１と、この本体部材２１の上面を覆う蓋部材３１を備え、本体部材２１と蓋部材３１は図４に示したように電気接続箱１１に一体の留め具１２で結合される。電気接続箱１１は全体として略直方体形状であり、留め具１２は、電気接続箱の形状と搭載空間の関係上、図２、図３に示したように平面視長方形の長辺を構成する、相反する方向の２面に、それぞれ１カ所と２カ所の合計３カ所形成されている。電気接続箱１１の形状と留め具１２の形成位置と個数は一例であり、電気接続箱１１の形状や留め具１２の態様はさまざまである。   As shown in FIGS. 1 and 2, the electrical junction box 11 includes a main body member 21 that houses an electrical component (not shown) and a lid member 31 that covers the upper surface of the main body member 21. As shown in FIG. 4, the member 31 is coupled to the electrical junction box 11 with an integral fastener 12. The electrical connection box 11 has a substantially rectangular parallelepiped shape as a whole, and the fastener 12 forms a long side of a rectangular shape in plan view as shown in FIGS. 2 and 3 due to the relationship between the shape of the electrical connection box and the mounting space. A total of three locations, one and two, are formed on two surfaces in opposite directions. The shape of the electrical junction box 11 and the formation position and number of the fasteners 12 are examples, and the shape of the electrical junction box 11 and the manner of the fasteners 12 are various.

留め具１２は、図２、図４に示したように、合成樹脂製の本体部材２１の一部に一体形成された留め部２２と、合成樹脂製の蓋部材３１の一部に一体成形された留め部３２で構成され、本体部材２１に対して蓋部材３１を被せることによって、蓋部材３１の留め部３２を構成する弾性係止部３３が本体部材２１の留め部２２を構成する係止爪部２３に係止する構造である。この構造は、本体部材２１と蓋部材３１の間をシールするパッキン４１との協働で一定の結合状態を得るものであり、ねじ止めする場合のような調整しろを持たない。つまり本体部材２１と蓋部材３１を留め具１２で結合した時には所望のつぶし代でパッキン４１を押圧する一定の押圧力が得られるが、その押圧力を変更することはできない。   As shown in FIGS. 2 and 4, the fastener 12 is integrally formed with a fastening portion 22 formed integrally with a part of the synthetic resin main body member 21 and a part of the lid member 31 made of synthetic resin. The elastic locking part 33 constituting the fastening part 32 of the lid member 31 is locked by the elastic fastening part 33 constituting the fastening part 22 of the body member 21 by covering the body member 21 with the lid member 31. This is a structure for locking to the claw portion 23. This structure obtains a fixed coupling state in cooperation with the packing 41 that seals between the main body member 21 and the lid member 31, and does not have an adjustment margin as in the case of screwing. That is, when the main body member 21 and the lid member 31 are joined by the fastener 12, a constant pressing force for pressing the packing 41 with a desired crushing margin can be obtained, but the pressing force cannot be changed.

本体部材２１の留め部２２は、図４に示したように蓋部材３１の留め部３２を収容する収容空間２４を有し、収容空間２４の上端面は開口している。この留め部２２の内面における本体部材２１の側面に対向する面に、前述の係止爪部２３が形成されている。   As shown in FIG. 4, the fastening portion 22 of the main body member 21 has an accommodation space 24 that houses the fastening portion 32 of the lid member 31, and the upper end surface of the accommodation space 24 is open. The aforementioned locking claw portion 23 is formed on the inner surface of the fastening portion 22 on the surface facing the side surface of the main body member 21.

蓋部材３１の留め部３２は、図４に示したように本体部材２１の留め部２２の収容空間２４に入る嵌合部３４を有し、嵌合部３４の幅方向の中間部に、下端位置から外側斜め上方に延びて内外方向に弾性変位する前述の弾性係止部３３が形成されている。つまり留め具１２は、蓋部材３１の嵌合部３４を本体部材２１の収容空間２４に嵌めると、嵌合部３４は弾性係止部３３を内方に弾性変位しながら進入し、弾性係止部３３の上端が係止爪部２３を通過した時点で弾性係止部３３を弾性復帰させて、弾性係止部３３を係止爪部２３の下端に係止する構造である。   As shown in FIG. 4, the fastening portion 32 of the lid member 31 has a fitting portion 34 that enters the accommodation space 24 of the fastening portion 22 of the main body member 21, and a lower end at the intermediate portion in the width direction of the fitting portion 34. The above-described elastic locking portion 33 that extends obliquely upward and outward from the position and elastically moves inward and outward is formed. That is, when the fitting 12 fits the fitting portion 34 of the lid member 31 into the accommodation space 24 of the main body member 21, the fastener 12 enters the elastic locking portion 33 while elastically displacing the elastic locking portion 33 inward. When the upper end of the portion 33 passes through the locking claw portion 23, the elastic locking portion 33 is elastically returned to lock the elastic locking portion 33 to the lower end of the locking claw portion 23.

このような留め具１２は、図４に示したようにパッキン４１を圧縮変形し、パッキン４１が復元しようとする反発力で弾性係止部３３と係止爪部２３とのガタつきのない係止状態を保持する。   Such a fastener 12 compresses and deforms the packing 41 as shown in FIG. 4, and the elastic locking portion 33 and the locking claw portion 23 are not rattled by the repulsive force that the packing 41 tries to restore. Keep state.

パッキン４１は、図１、図４、図５に示したように、蓋部材３１の外周縁部の下端の保持溝３５に保持されている。保持溝３５は平面視略長方形状の蓋部材３１の外周縁部の全周に形成され、外側壁３５ａと内側壁３５ｂと底板部３５ｃで囲まれている。外側壁３５ａは内側壁３５ｂよりも長く、本体部材２１の上端外周面を被覆する被覆部３５ｄを備えている。被覆部３５ｄの下端縁には、本体部材２１の対応部位に上方と外方から接する段部３５ｅが形成されている。   As shown in FIGS. 1, 4, and 5, the packing 41 is held in the holding groove 35 at the lower end of the outer peripheral edge of the lid member 31. The holding groove 35 is formed on the entire periphery of the outer peripheral edge of the lid member 31 having a substantially rectangular shape in plan view, and is surrounded by the outer wall 35a, the inner wall 35b, and the bottom plate portion 35c. The outer side wall 35 a is longer than the inner side wall 35 b and includes a covering portion 35 d that covers the outer peripheral surface of the upper end of the main body member 21. At the lower end edge of the covering portion 35d, a step portion 35e is formed in contact with the corresponding portion of the main body member 21 from above and from the outside.

保持溝３５の深さ（内側壁３５ｂの高さ）はパッキン４１を収容する深さである。つまりパッキン４１の全体が保持溝３５に収まる。具体的には保持溝３５はパッキン４１の高さよりも深く、パッキン４１の全体を収めてもまだ余裕のある深さである。   The depth of the holding groove 35 (the height of the inner side wall 35 b) is a depth for accommodating the packing 41. That is, the entire packing 41 is accommodated in the holding groove 35. Specifically, the holding groove 35 is deeper than the height of the packing 41, and is still deep enough even when the entire packing 41 is accommodated.

この例に使用するパッキン４１は角リングで、断面形状は長方形である。パッキン４１は縦長の姿勢で保持溝３５に収容される。   The packing 41 used in this example is a square ring, and the cross-sectional shape is a rectangle. The packing 41 is accommodated in the holding groove 35 in a vertically long posture.

本体部材２１は上端の全周に、パッキン４１に圧接する圧接部２５を備えている。圧接部２５は立設された板状で、保持溝３５の幅よりも厚さが薄く、パッキン４１の対向面（下面）に食い込む圧接面２６を上端に有している。この圧接面２６は平面で、高さは全周にわたって同じ高さである。また圧接面２６の幅はパッキン４１の幅よりも幅狭である。圧接部２５より下方の外側面には、前述した蓋部材３１の段部３５ｅが接する突条部２７がほぼ全周にわたって形成されている。   The main body member 21 includes a press-contact portion 25 that presses against the packing 41 on the entire periphery of the upper end. The pressure contact portion 25 is a standing plate-like shape, and is thinner than the width of the holding groove 35, and has a pressure contact surface 26 that bites into the opposing surface (lower surface) of the packing 41 at the upper end. The pressure contact surface 26 is a flat surface and has the same height over the entire circumference. The width of the pressure contact surface 26 is narrower than the width of the packing 41. On the outer surface below the pressure contact portion 25, a ridge portion 27 that contacts the step portion 35e of the lid member 31 described above is formed over substantially the entire circumference.

このような本体部材２１と蓋部材３１と留め具１２とパッキン４１を有する電気接続箱１１は、留め具１２の位置に関わらず、パッキン４１に対する必要な押圧力を発揮できるようにするため、蓋部材３１の保持溝３５における前述の３個の留め具１２によるパッキン４１を押圧する押圧力よりもパッキン４１の反発力が強い部位の底部に、図１に示したように、パッキン４１を他の部位よりも圧接部２５側にせり出させる上げ底形成部３６が備えている。   The electrical junction box 11 having the main body member 21, the lid member 31, the fastener 12, and the packing 41 has a lid so that the necessary pressing force can be exerted on the packing 41 regardless of the position of the fastener 12. As shown in FIG. 1, the packing 41 is attached to the bottom of the portion where the repulsive force of the packing 41 is stronger than the pressing force pressing the packing 41 by the three fasteners 12 in the holding groove 35 of the member 31. A raised bottom forming portion 36 is provided to protrude to the pressure contact portion 25 side from the portion.

留め具１２によるパッキン４１を押圧する押圧力よりもパッキン４１の反発力が強い部位は、押圧力が弱くなりがちな部位であって、上げ底形成部３６のない状態においてパッキン４１を圧縮する押圧力が低くパッキン４１の反発力で押し返されて蓋部材３１が撓む部位である。これは、たとえば留め具１２から離れた部位または非直線状部位である。留め具１２から距離が遠い部位は、蓋部材31に生じるねじれ変形によって、主として留め具１２による押圧力が留め具１２に近い部位よりも低くなりがちであるためにパッキン４１の圧縮が十分に行いにくい部位であり、非直線状部位は、パッキン４１がカーブしたり屈曲したりしており、主として単位面積当たりのパッキンの量が直線状の部分よりも多いうえに曲がりによって硬くなりがちであるためにパッキン４１の圧縮が十分に行いにくい部位である。パッキン４１の圧縮を十分に行いにくいか否か、つまり留め具１２から距離が遠いか否か、圧縮が不十分な非直線状であるか否かは、蓋部材３１の剛性・可撓性も加味して判断される。   The portion where the repelling force of the packing 41 is stronger than the pressing force pressing the packing 41 by the fastener 12 is a portion where the pressing force tends to be weak, and the pressing force compressing the packing 41 without the raised bottom forming portion 36. Is a portion where the lid member 31 is bent by being pushed back by the repulsive force of the packing 41. This is, for example, a part away from the fastener 12 or a non-linear part. Since the portion far from the fastener 12 tends to have a lower pressing force than the portion close to the fastener 12 mainly due to torsional deformation generated in the lid member 31, the packing 41 is sufficiently compressed. In the non-linear part, the packing 41 is curved or bent, and the amount of packing per unit area is larger than that of the linear part and tends to become hard due to bending. Further, the packing 41 is difficult to sufficiently compress. Whether or not the packing 41 is sufficiently compressed, that is, whether the distance from the fastener 12 is far, whether it is a non-linear shape with insufficient compression, and the rigidity / flexibility of the lid member 31 is also determined. Judgment is made with consideration.

パッキン４１に対する押圧力が得られる部位、つまり上げ底形成部３６を備える必要のない部位、たとえば留め具１２に近い部位は、留め具１２が本体部材２１と蓋部材３１との間をパッキン４１の反発力に抗して近づける力が直接的に作用するので、所望の強い押圧力が得られる。このため、図５や、保持溝３５の長手方向に沿った縦断面図である図６に示したように、保持溝３５の底を形成する底板部３５ｃの厚さｔ１と保持溝３５の深さｄ１が、該当範囲の全体にわたって同一である。   The part where the pressing force against the packing 41 is obtained, that is, the part which does not need to have the raised bottom forming part 36, for example, the part close to the fastener 12, is the repulsion of the packing 41 between the main body member 21 and the lid member 31. Since the force approaching against the force acts directly, a desired strong pressing force can be obtained. Therefore, as shown in FIG. 5 and FIG. 6, which is a longitudinal sectional view along the longitudinal direction of the holding groove 35, the thickness t 1 of the bottom plate portion 35 c that forms the bottom of the holding groove 35 and the depth of the holding groove 35. The length d1 is the same over the entire corresponding range.

これに対してパッキン４１に対する押圧力が弱くなりがちな部位は、図１や、保持溝３５の長手方向に沿った縦断面図である図７に示したように、上げ底形成部３６が一体成形で形成され、保持溝３５の底を形成する底板部３５ｃの厚さと保持溝３５の深さに違いを持たせている。つまり、上げ底形成部３６は、蓋部材３１の留め部３２に対応する部位の底面レベルよりも底面レベルを上げる。これによって底板部３５ｃの厚さｔ２は、留め部３２に対応する部位の厚さｔ１よりも厚くなる。そして、これに伴って保持溝３５の深さｄ２は留め部３２に対応する部位の深さｄ１よりも浅くなる。これは保持部３５を形成する内側壁３５ｂの高さが同一だからである。図７の仮想線は、上げ底形成部３６とそうでない部位の境界を示す線である。   On the other hand, the portion where the pressing force on the packing 41 tends to be weak is formed by integrally forming the raised bottom forming portion 36 as shown in FIG. 1 and FIG. 7 which is a longitudinal sectional view along the longitudinal direction of the holding groove 35. The thickness of the bottom plate portion 35 c that forms the bottom of the holding groove 35 and the depth of the holding groove 35 are different. That is, the raised bottom forming portion 36 raises the bottom surface level from the bottom surface level of the portion corresponding to the fastening portion 32 of the lid member 31. Accordingly, the thickness t2 of the bottom plate portion 35c becomes thicker than the thickness t1 of the portion corresponding to the fastening portion 32. Accordingly, the depth d2 of the holding groove 35 becomes shallower than the depth d1 of the portion corresponding to the fastening portion 32. This is because the inner wall 35b forming the holding portion 35 has the same height. The imaginary line in FIG. 7 is a line that indicates the boundary between the raised bottom forming portion 36 and the portion that is not.

図７に示したように、上げ底形成部３６の厚さは、保持溝３５の底面レベルを全体で同一としたときの蓋部材３１の仮想撓み形状に従って漸次変化するものである。仮想撓み形状は、言い換えれば、保持溝３５の底面レベルに変化を付けない場合にパッキン４１の反発力によって蓋部材３１が撓むと予想される形状と同一又は類似する形状である。この形状に対応するように上げ底形成部３６の厚みは連続的に変化する。つまり上げ底形成部３５の上面は、ごく緩やかな傾斜面や湾曲面を有する。   As shown in FIG. 7, the thickness of the raised bottom forming portion 36 gradually changes according to the virtual deflection shape of the lid member 31 when the bottom surface level of the holding groove 35 is the same as the whole. In other words, the virtual bending shape is the same as or similar to the shape that the lid member 31 is expected to be bent by the repulsive force of the packing 41 when the bottom surface level of the holding groove 35 is not changed. The thickness of the raised bottom forming portion 36 continuously changes so as to correspond to this shape. That is, the upper surface of the raised bottom forming portion 35 has a very gentle inclined surface or curved surface.

上げ底形成部３６は、図８に示したように、一定の厚さ、または段階的に変化するものとしてもよい。図８の仮想線は、上げ底形成部３６とそうでない部位の境界を示す線である。   As shown in FIG. 8, the raised bottom forming portion 36 may have a constant thickness or a stepwise change. The imaginary line in FIG. 8 is a line that indicates the boundary between the raised bottom forming portion 36 and the portion that is not.

また、図９に示したように上げ底形成部３６は、保持溝３５の深さを全体にわたって同一にして形成することもできる。上げ底形成部３６が存在するのに保持溝３５の深さに変化がないので、保持溝３５を有する部分は全体として高さが高くなる。図９の保持溝３５の底側の仮想線は、上げ底形成部３６とそうでない部位の境界を示す線である。図９の保持溝３５の開口側の仮想線は、保持溝３５を形成する内側壁３５ｂの下端高さを上げ底形成部３６がない部位と同一にした場合の位置を示す線である。   Further, as shown in FIG. 9, the raised bottom forming portion 36 can be formed with the same depth of the holding groove 35 throughout. Since there is no change in the depth of the holding groove 35 in spite of the presence of the raised bottom forming portion 36, the overall height of the portion having the holding groove 35 increases. The virtual line on the bottom side of the holding groove 35 in FIG. 9 is a line that indicates the boundary between the raised bottom forming portion 36 and the part that is not. The imaginary line on the opening side of the holding groove 35 in FIG. 9 is a line that indicates the position when the lower end height of the inner wall 35b that forms the holding groove 35 is raised to be the same as the portion where the bottom forming portion 36 is not provided.

上げ底形成部３６は、図１０に示ししたように保持溝３５とは別の部材で構成することもできる。この場合、上げ底形成部３６は保持溝３５の底に固定する。上げ底形成部３６の固定は貼り付けや塗布で行える。   The raised bottom forming portion 36 may be formed of a member different from the holding groove 35 as shown in FIG. In this case, the raised bottom forming portion 36 is fixed to the bottom of the holding groove 35. The raised bottom forming portion 36 can be fixed by pasting or coating.

上げ底形成部３６を備える部位は、蓋部材３１の可撓性によるが、いずれの留め部３２からも離れている位置、特に隅角部（隅部または角部）に設定される。一例を示すと、次のように設定するとよい。   Although the part provided with the raised bottom forming part 36 depends on the flexibility of the lid member 31, it is set at a position away from any of the fastening parts 32, particularly at a corner (corner or corner). For example, the following settings are recommended.

図１１は保持溝３５と留め部３２の位置関係を示す平面図である。３個の留め部３２のうち、異なる方向に向く面に形成された２個の留め部３２同士を結ぶ仮想基準線（第１仮想基準線Ｌ１、第２仮想基準線Ｌ２）から離れた隅角部の保持溝３５を中心に上げ底形成部３６（図１参照）を備える。   FIG. 11 is a plan view showing the positional relationship between the holding groove 35 and the fastening portion 32. A corner angle away from a virtual reference line (first virtual reference line L1, second virtual reference line L2) connecting two fastening parts 32 formed on surfaces facing in different directions among the three fastening parts 32 A raised bottom forming portion 36 (see FIG. 1) is provided around the holding groove 35 of the portion.

前述のように蓋部材３１の留め部３２は平面視長方形の蓋部材３１の長辺を構成する２面に、それぞれ１個と２個形成されている（図２、図３参照）。このため、仮想基準線（第１仮想基準線Ｌ１、第２仮想基準線Ｌ２）としては、１個の留め部３２を有する側のその留め部３２（第１留め部３２ａ）と、この留め部３２（第１留め部３２ａ）を有する側と反対側に形成された２個の留め部３２のうち一方（第２留め部３２ｂ）を結ぶ第１仮想基準線Ｌ１と、１個の留め部３２を有する側のその留め部３２（第１留め部３２ａ）と、この留め部３２（第１留め部３２ａ）を有する側と反対側に形成された２個の留め部３２のうちの他方（第３留め部３２ｃ）を結ぶ第２仮想基準線Ｌ２がある。   As described above, one and two fastening portions 32 of the lid member 31 are formed on two surfaces constituting the long side of the lid member 31 having a rectangular shape in plan view (see FIGS. 2 and 3). For this reason, as the virtual reference lines (first virtual reference line L1, second virtual reference line L2), the fastening part 32 (first fastening part 32a) on the side having one fastening part 32, and the fastening part A first virtual reference line L1 that connects one (second fastening portion 32b) of the two fastening portions 32 formed on the side opposite to the side having 32 (first fastening portion 32a), and one fastening portion 32. The fastening part 32 (first fastening part 32a) on the side having the fastening part and the other of the two fastening parts 32 formed on the side opposite to the side having the fastening part 32 (first fastening part 32a) (the first fastening part 32a). There is a second virtual reference line L2 connecting the three fastening portions 32c).

これらの仮想基準線（第１仮想基準線Ｌ１、第２仮想基準線Ｌ２）は、留め部３２が比較的幅狭の形状であるので、留め部３２の左右方向の中心を結んで得られる。留め部３２が、例えばヒンジからなる留め具を構成するもので幅広の場合には、その留め部３２の長手方向の端部をつないで得られる。   These virtual reference lines (the first virtual reference line L1 and the second virtual reference line L2) are obtained by connecting the center of the fastening part 32 in the left-right direction since the fastening part 32 has a relatively narrow shape. When the fastening portion 32 constitutes a fastening device made of, for example, a hinge and is wide, the fastening portion 32 is obtained by connecting the longitudinal ends of the fastening portion 32.

上げ底形成部３６が形成される隅角部、具体的には保持溝３５が平面視長方形であるので角部は、前述の２本の仮想基準線（第１仮想基準線Ｌ１、第２仮想基準線Ｌ２）に対する垂線の長さが角部に設定される。図示例の留め部３２は、第１留め部３２ａは面の長手方向のほぼ中間位置に形成されており、第２留め部３２ｂと第３留め部３２ｃは間隔を隔てて形成されているので、少なくとも第１留め部３２ａを有する面に連続する両角部（第１角部Ｃ１、第２角部Ｃ２）に上げ底形成部３６が形成される。第２留め部３２ｂと第３留め部３２ｃを有する面に連続する両角部（第３角部Ｃ３、第４角部Ｃ４）にも上げ底形成部３６を形成してもよい。   Since the corner portion where the raised bottom forming portion 36 is formed, specifically, the holding groove 35 is rectangular in plan view, the corner portion has the above-described two virtual reference lines (first virtual reference line L1, second virtual reference line). The length of the perpendicular to the line L2) is set at the corner. In the illustrated example of the fastening portion 32, the first fastening portion 32a is formed at a substantially intermediate position in the longitudinal direction of the surface, and the second fastening portion 32b and the third fastening portion 32c are formed with an interval therebetween. Raised bottom forming portions 36 are formed at both corner portions (first corner portion C1 and second corner portion C2) continuous with at least the surface having the first fastening portion 32a. The raised bottom forming portion 36 may also be formed at both corner portions (third corner portion C3 and fourth corner portion C4) continuous with the surface having the second fastening portion 32b and the third fastening portion 32c.

図１２は、すべての角部（第１角部Ｃ１、第２角部Ｃ２、第３角部Ｃ３、第４角部Ｃ４）に上げ底形成部３６を形成した場合の、第１仮想基準線Ｌ１から第１角部Ｃ１、第４角部Ｃ４側の保持溝３５における上げ底形成部３６の形成状態を示す断面図で、図１３はその、第２仮想基準線Ｌ２から第２角部Ｃ２、第３角部Ｃ３側の保持溝３５における上げ底形成部３６の形成状態を示す断面図である。図１２、図１３中、仮想線は上げ底形成部３６とそうでない部位の境界を示す線である。   FIG. 12 shows the first virtual reference line L1 when the raised bottom forming portion 36 is formed at all the corners (the first corner C1, the second corner C2, the third corner C3, and the fourth corner C4). FIG. 13 is a cross-sectional view showing a state in which the raised bottom forming portion 36 is formed in the holding groove 35 on the side of the first corner portion C1 and the fourth corner portion C4 from the second virtual reference line L2 to the second corner portion C2. It is sectional drawing which shows the formation state of the raising bottom formation part 36 in the holding groove 35 by the side of the triangle part C3. 12 and 13, the imaginary line is a line that indicates the boundary between the raised bottom forming portion 36 and the portion that is not.

図１２に示すように、第１角部Ｃ１と第４角部Ｃ４に上げ底形成部３６が形成され、第１角部Ｃ１のほうが第４角部Ｃ４よりも第１仮想基準線Ｌ１からの距離が長いので、第１角部Ｃ１の上げ底形成部３６のほうが第４角部Ｃ４の上げ底形成部３６よりも厚く形成されている。第１角部Ｃ１と第４角部Ｃ４のうちでも特に曲りの中心となる中間部は、パッキン４１の反発力が高まるので厚い。また第１角部Ｃ１と第４角部Ｃ４に至る部分は、第１仮想基準線Ｌ１からの距離に応じて厚みが漸次変化している。   As shown in FIG. 12, raised bottom forming portions 36 are formed at the first corner portion C1 and the fourth corner portion C4, and the first corner portion C1 is farther from the first virtual reference line L1 than the fourth corner portion C4. Therefore, the raised bottom forming portion 36 of the first corner C1 is formed thicker than the raised bottom forming portion 36 of the fourth corner C4. Among the first corner portion C1 and the fourth corner portion C4, the middle portion that is the center of bending is particularly thick because the repulsive force of the packing 41 is increased. In addition, the thickness of the portion that reaches the first corner C1 and the fourth corner C4 gradually changes according to the distance from the first virtual reference line L1.

図１３に示ししたように、第２角部Ｃ２と第３角部Ｃ３に上げ底形成部３６が形成され、第２角部Ｃ２のほうが第３角部Ｃ３よりも第２仮想基準線Ｌ２からの距離が長いので、第２角部Ｃ２の上げ底形成部３６のほうが第３角部Ｃ３の上げ底形成部３６よりも厚く形成されている。第２角部Ｃ２と第３角部Ｃ３のうちでも特に曲りの中心となる中間部は、パッキン４１の反発力が高まるので厚い。また第２角部Ｃ２と第３角部Ｃ３に至る部分は、第２仮想基準線Ｌ２からの距離に応じて厚みが漸次変化している。   As shown in FIG. 13, the raised bottom forming portion 36 is formed at the second corner portion C2 and the third corner portion C3, and the second corner portion C2 is further away from the second virtual reference line L2 than the third corner portion C3. Since the distance is long, the raised bottom forming portion 36 of the second corner C2 is formed thicker than the raised bottom forming portion 36 of the third corner C3. Among the second corner portion C2 and the third corner portion C3, the middle portion that is the center of bending is particularly thick because the repulsive force of the packing 41 is increased. In addition, the thickness of the portion that reaches the second corner portion C2 and the third corner portion C3 gradually changes in accordance with the distance from the second virtual reference line L2.

このように仮想基準線（第１仮想基準線Ｌ１、第２仮想基準線Ｌ２）からの距離に応じて上げ底形成部３６の厚みを変化させると、上げ底形成部３６の必要な部位をもれなく選定することができ、パッキンの十分な圧縮を確実に行える。しかも、保持溝３５の底面レベルを全体で同一としたときの蓋部材３１の仮想撓み形状に従った変化を容易に得られる。   As described above, when the thickness of the raised bottom forming portion 36 is changed in accordance with the distance from the virtual reference lines (the first virtual reference line L1 and the second virtual reference line L2), all necessary portions of the raised bottom forming portion 36 are selected. It is possible to reliably compress the packing. Moreover, it is possible to easily obtain a change according to the virtual bending shape of the lid member 31 when the bottom surface level of the holding groove 35 is the same as the whole.

上げ底形成部３６の厚さは、前述したように蓋部材３１の剛性・可撓性を加味して判断される。たとえば蓋部材３１の適宜位置に補強リブを備えて蓋部材３１の剛性を高めた場合には、補強リブを設けない場合に比べて上げ底形成部３６の厚さを薄くできる。   The thickness of the raised bottom forming portion 36 is determined in consideration of the rigidity and flexibility of the lid member 31 as described above. For example, when a reinforcing rib is provided at an appropriate position of the lid member 31 to increase the rigidity of the lid member 31, the thickness of the raised bottom forming portion 36 can be reduced as compared with the case where the reinforcing rib is not provided.

以上のように構成された電気接続箱１１では、本体部材２１に必要なリレーやヒューズなどを搭載して蓋部材３１を被せて、留め具１２で蓋部材３１の被覆状態を保持する。このとき留め具１２は、図４に示したように弾性係止部３３の上端が係止爪部２３に係止するとともに、本体部材２１の圧接部２５の圧接面２６がパッキン４１を圧縮して、ガタつきのない係止状態が得られる。   In the electrical junction box 11 configured as described above, necessary relays and fuses are mounted on the main body member 21 and the lid member 31 is covered, and the covering state of the lid member 31 is held by the fastener 12. At this time, as shown in FIG. 4, the upper end of the elastic locking portion 33 is locked to the locking claw portion 23, and the pressure contact surface 26 of the pressure contact portion 25 of the main body member 21 compresses the packing 41. Thus, a locked state without rattling can be obtained.

留め具１２に対応する部位やこれに近い部位では、図４、図６に示したように、パッキン４１が所望とおり圧縮されて、ガタつきのない係止状態と良好な密封状態が得られる。高い密封性が得られるので、止水性能も高い。   As shown in FIGS. 4 and 6, the packing 41 is compressed as desired at a portion corresponding to the fastener 12 or a portion close thereto, and a locked state without backlash and a good sealed state are obtained. High sealing performance and high water-stopping performance.

同様に、留め具１２から離れた部位や非直線状である角部（第１角部Ｃ１、第２角部Ｃ２、第３角部Ｃ３、第４角部Ｃ４）の部位でも、図１、図７、図８に示したように、パッキン４１を十分に圧縮して、良好な密封状態が得られる。これは、上げ底形成部３６が、保持溝３５における留め部２２から離れた部位または角部（第１角部Ｃ１、第２角部Ｃ２、第３角部Ｃ３、第４角部Ｃ４）部位において、パッキン４１の位置を本体部材２１側にせり出せさて、パッキン４１が本体部材２１の圧接面２６に対して強く当たるようにするからである。パッキン４１の反発力によってパッキン４１を押圧する押圧力が低くなりがちな部位で、パッキン４１に対する押圧力を高めるので、必要な押圧力を付与し、パッキン４１を圧縮することができる。このようなパッキン４１の十分な圧縮によって密封性を得るので、止水性能を確保することができる。   Similarly, even in a portion away from the fastener 12 or a non-linear corner (first corner C1, second corner C2, third corner C3, fourth corner C4), FIG. As shown in FIGS. 7 and 8, the packing 41 is sufficiently compressed, and a good sealed state is obtained. This is because the raised bottom forming portion 36 is a portion or a corner portion (first corner portion C1, second corner portion C2, third corner portion C3, fourth corner portion C4) of the holding groove 35 away from the fastening portion 22. This is because the position of the packing 41 is protruded to the main body member 21 side so that the packing 41 strongly contacts the press contact surface 26 of the main body member 21. Since the pressing force for pressing the packing 41 due to the repulsive force of the packing 41 tends to be low, the pressing force against the packing 41 is increased, so that the necessary pressing force can be applied and the packing 41 can be compressed. Since the sealing performance is obtained by sufficient compression of the packing 41 as described above, the water stop performance can be ensured.

前述のように留め具１２は調整しろを持たないものであるが、全体にわたってパッキン４１の十分な圧縮が行え、良好な密封性を得られる。   As described above, the fastener 12 does not have an allowance for adjustment, but the packing 41 can be sufficiently compressed over the whole, and good sealing performance can be obtained.

パッキン４１の圧縮について、上げ底形成部３６の厚みは、留め部３２から離れた部位ほど、または非直線状で形状が曲がっている部位ほど厚くしているので、パッキン４１の反発力が強い部分ほど本体部材２１の圧接面２６に強く当たるようにすることができる。この結果、パッキン４１を十分に圧縮して、所望の密封性を得られる。特に仮想撓み形状に従って上げ底形成部の厚みを漸次変化させた場合には、留め部に近い部位とそうでない部位との間での密封性も得られ、切れ目のない状態で全体において均等にパッキンを圧縮することが可能である。このため、より良好な密封状態を得ることができる。   Regarding the compression of the packing 41, the thickness of the raised bottom forming part 36 is thicker as the part away from the fastening part 32 or as the part that is non-linear and bent in shape, so the part where the repulsive force of the packing 41 is stronger. It is possible to make a strong contact with the pressure contact surface 26 of the main body member 21. As a result, the packing 41 can be sufficiently compressed to obtain a desired sealing property. In particular, when the thickness of the raised bottom forming portion is gradually changed according to the virtual bending shape, a sealing property between a portion close to the fastening portion and a portion that is not so is obtained, and packing is uniformly performed in the whole state without a break. It is possible to compress. For this reason, a better sealed state can be obtained.

しかも、上げ底形成部を備える部位を異なる方向に向く面に形成された２個の留め部同士を結ぶ２本の仮想基準線から離れた隅角部の保持溝とすることで、前述のように上げ底形成部３６の必要な部位をもれなく選定することができ、十分なパッキンの圧縮を確実に行うようにすることができる。そのうえ上げ底形成部の厚さを仮想撓み形状に従って漸次変化させることも容易に行える。   Moreover, as described above, the portion having the raised bottom forming portion is formed as a holding groove at a corner portion away from the two virtual reference lines connecting the two fastening portions formed on the surfaces facing in different directions. The necessary portions of the raised bottom forming portion 36 can be selected without fail, and sufficient packing compression can be performed reliably. In addition, the thickness of the raised bottom forming portion can be easily changed gradually according to the virtual bending shape.

パッキン４１の圧縮時には、パッキン４１の全体が保持溝３５内に収まっており、そのうえ留め具１２による蓋部材３１と本体部材１２との結合に際して蓋部材３１が湾曲変形するようなことはないので、保持溝３５が変形してパッキン４１を逃がしてしまうおそれもなく、パッキン４１の圧縮を所望とおりに行い、十分な密封性を得ることが確実にできる。このようなパッキン４１の圧縮により、パッキン４１には、はみ出しも生じず、安定したシールとなる。   When the packing 41 is compressed, the entire packing 41 is accommodated in the holding groove 35, and the lid member 31 is not bent and deformed when the lid member 31 and the main body member 12 are joined by the fastener 12. There is no fear that the holding groove 35 is deformed and the packing 41 is escaped, and it is possible to reliably compress the packing 41 as desired and obtain sufficient sealing performance. By such compression of the packing 41, the packing 41 does not protrude and a stable seal is obtained.

また前述のようにパッキン４１に対する押圧力を調整するための上げ底形成部３６は保持溝３５の底部に形成されており、表面に突出することはないので、本体部材２１の内部を見渡したり本体部材２１内に作業をしたりする際に支障をきたすことはなく、メンテナンス等の作業性を確保できる。   Further, as described above, the raised bottom forming portion 36 for adjusting the pressing force against the packing 41 is formed at the bottom portion of the holding groove 35 and does not protrude from the surface. No trouble is caused when the work is performed in the work area 21, and workability such as maintenance can be ensured.

前述のように上げ底形成部３６は保持溝３５内に設けられ、外部に突出することはないので、本体部材２１はもちろん、蓋部材３１も嵩高いものとなるようなことはなく、占有空間やコストの増大化を抑えることができ、管理等においても利点がある。   As described above, the raised bottom forming portion 36 is provided in the holding groove 35 and does not protrude to the outside. Therefore, the lid member 31 as well as the main body member 21 is not bulky. An increase in cost can be suppressed, and there is an advantage in management and the like.

さらに、上げ底形成部３６は蓋部材３１に形成されるものであるので、保持溝３５の上げ底形成部３６のみの設計で、良好な密封性を得られる。上げ底形成部３６は蓋部材３１に形成されるうえに、本体部材２１の圧縮面２６の全体が同じ高さでよいので、本体部材２１には既存のものを使用することができ、経済的であるという利点も有する。   Furthermore, since the raised bottom forming portion 36 is formed on the lid member 31, only the raised bottom forming portion 36 of the holding groove 35 can be designed to obtain good sealing performance. The raised bottom forming portion 36 is formed on the lid member 31, and the entire compression surface 26 of the main body member 21 may be the same height. Therefore, an existing one can be used for the main body member 21, which is economical. It also has the advantage of being.

この発明の構成と前述の一形態の構成との対応において、
この発明の密封箱は、前述の電気接続箱１１に対応し、
以下同様に、
仮想基準線は、第１仮想基準線Ｌ１、第２仮想基準線Ｌ２に対応し、
隅角部は、角部（第１角部Ｃ１、第２角部Ｃ２、第３角部Ｃ３、第４角部Ｃ４）に対応するも、
この発明は前述の構成のみに限定されるものではなく、その他の構成を採用することもできる。 In correspondence between the configuration of the present invention and the configuration of the above-described embodiment,
The sealed box according to the present invention corresponds to the above-described electrical junction box 11,
Similarly,
The virtual reference line corresponds to the first virtual reference line L1 and the second virtual reference line L2,
The corners correspond to the corners (first corner C1, second corner C2, third corner C3, fourth corner C4),
The present invention is not limited to the above-described configuration, and other configurations can be employed.

たとえば、密封箱としては電気接続箱のほか、気密性、止水性などが要求されるその他の各種の物品を収容する密封箱などであってもよく、密封構造は電気接続箱以外の密封構造としても使用できる。   For example, in addition to an electrical junction box, the sealed box may be a sealed box that accommodates various other items that are required to be airtight and watertight. The sealed structure is a sealed structure other than an electrical junction box. Can also be used.

留め具は本体部材または蓋部材とは別部材のもので構成してもよい。   The fastener may be formed of a member different from the main body member or the lid member.

パッキンは角パッキン以外の断面形状のパッキンであってもよい。   The packing may be a packing having a cross-sectional shape other than the square packing.

１１…電気接続箱
１２…留め具
２１…本体部材
２５…圧接部
２６…圧接面
３１…蓋部材
３２…留め部
３５…保持溝
３６…上げ底形成部
４１…パッキン
Ｃ１…第１角部
Ｃ２…第２角部
Ｃ３…第３角部
Ｃ４…第４角部
Ｌ１…第１仮想基準線
Ｌ２…第２仮想基準線 DESCRIPTION OF SYMBOLS 11 ... Electrical junction box 12 ... Fastener 21 ... Main body member 25 ... Pressure contact part 26 ... Pressure contact surface 31 ... Lid member 32 ... Fastening part 35 ... Holding groove 36 ... Raised bottom formation part 41 ... Packing C1 ... 1st corner | angular part C2 ... 1st Two corners C3 ... third corner C4 ... fourth corner L1 ... first virtual reference line L2 ... second virtual reference line

Claims (5)

本体部材と蓋部材を備え、該蓋部材には、前記本体部材に対して結合するための留め部と、前記本体部材との間でシールするパッキンを保持する保持溝を備えた密封箱であって、
前記保持溝における前記留め部から離れた部位または非直線状部位の底部に、前記留め部に対応する部位の底面レベルよりも底面レベルを上げる上げ底形成部を備えた
密封箱。 A main body member and a lid member are provided, and the lid member is a sealed box having a fastening portion for coupling to the main body member and a holding groove for holding a packing to be sealed between the main body member. And
A sealed box comprising a raised bottom forming portion that raises a bottom surface level at a bottom portion of a portion of the holding groove that is away from the fastening portion or a non-linear portion and that is higher than a bottom surface level of a portion corresponding to the fastening portion. 本体部材と蓋部材を備え、該蓋部材には、前記本体部材に対して結合するための留め部と、前記本体部材との間でシールするパッキンを保持する保持溝を備えた密封箱であって、
前記保持溝の底部に、前記留め部から離れた部位ほど、または非直線状で形状が曲がっている部位ほど、前記留め部に対応する部位の底面レベルよりも漸次底面レベルを上げる上げ底形成部を備えた
密封箱。 A main body member and a lid member are provided, and the lid member is a sealed box having a fastening portion for coupling to the main body member and a holding groove for holding a packing to be sealed between the main body member. And
At the bottom of the holding groove, a raised bottom forming part that gradually raises the bottom surface level of the part farther from the fastening part or the part that is non-linear and bent in shape than the bottom level of the part corresponding to the fastening part. Sealed box provided. 前記上げ底形成部の厚さが、前記保持溝の底面レベルを全体で同一としたときの前記蓋部材の仮想撓み形状に従って漸次変化するものである
請求項２に記載の密封箱。 3. The sealed box according to claim 2, wherein the thickness of the raised bottom forming portion gradually changes according to a virtual deflection shape of the lid member when the bottom surface level of the holding groove is the same as the whole. 前記留め部を複数備え、
異なる方向に向く面に形成された２個の前記留め部同士を結ぶ仮想基準線から離れた隅角部の前記保持溝に、前記上げ底形成部を備えた
請求項１から請求項３のうちいずれか一項に記載の密封箱。 A plurality of the fastening portions are provided,
4. The method according to claim 1, wherein the raised bottom forming portion is provided in the holding groove at a corner portion away from a virtual reference line connecting the two fastening portions formed on surfaces facing in different directions. A sealed box according to claim 1. 本体部材と、該本体部材に被せる蓋部材と、これらを結合する留め具を備え、前記蓋部材には、前記本体部材との間でシールするパッキンを保持する保持溝を備え、前記本体部材には前記パッキンに圧接する圧接部を備えた密封構造であって、
前記保持溝が前記パッキンを収容する深さであり、
前記保持溝における前記留め具による前記パッキンを押圧する押圧力よりも前記パッキンの反発力が強い部位の底部に形成され、前記パッキンを他の部位よりも圧接部側にせり出させる上げ底形成部と、
前記圧接部に形成され、前記パッキンの対向面に食い込み全体が同じ高さの圧接面を備えた
密封構造。
A main body member, a lid member that covers the main body member, and a fastener that connects them; and the lid member includes a holding groove that holds a seal that seals between the main body member and the main body member. Is a sealing structure having a pressure contact portion that presses against the packing,
The holding groove is deep enough to accommodate the packing;
A raised bottom forming portion that is formed at the bottom of a portion where the repulsive force of the packing is stronger than the pressing force pressing the packing by the fastener in the holding groove, and that causes the packing to protrude to the pressure contact portion side than the other portions; ,
A sealing structure provided with a pressure contact surface that is formed in the pressure contact portion and bites into an opposing surface of the packing and has the same height.
JP2014264768A 2014-12-26 2014-12-26 Hermetically sealed box and hermetically sealing structure Pending JP2016127640A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2014264768A JP2016127640A (en) 2014-12-26 2014-12-26 Hermetically sealed box and hermetically sealing structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2014264768A JP2016127640A (en) 2014-12-26 2014-12-26 Hermetically sealed box and hermetically sealing structure

Publications (1)

Publication Number Publication Date
JP2016127640A true JP2016127640A (en) 2016-07-11

Family

ID=56359944

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2014264768A Pending JP2016127640A (en) 2014-12-26 2014-12-26 Hermetically sealed box and hermetically sealing structure

Country Status (1)

Country Link
JP (1) JP2016127640A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018019009A (en) * 2016-07-29 2018-02-01 住友電装株式会社 Electrical apparatus, and electrical apparatus system
JP2018113342A (en) * 2017-01-12 2018-07-19 日東工業株式会社 Electrical equipment storage box
JP2021078316A (en) * 2019-11-13 2021-05-20 矢崎総業株式会社 Electric connection box

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004335924A (en) * 2003-05-12 2004-11-25 Nachi Fujikoshi Corp Waterproof terminal box and waterproof plate

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004335924A (en) * 2003-05-12 2004-11-25 Nachi Fujikoshi Corp Waterproof terminal box and waterproof plate

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018019009A (en) * 2016-07-29 2018-02-01 住友電装株式会社 Electrical apparatus, and electrical apparatus system
WO2018021086A1 (en) * 2016-07-29 2018-02-01 住友電装株式会社 Electrical apparatus and electrical apparatus system
CN109565943A (en) * 2016-07-29 2019-04-02 住友电装株式会社 Electrical equipment and electric equipment system
US10759364B2 (en) 2016-07-29 2020-09-01 Sumitomo Wiring Systems, Ltd. Electrical apparatus and electrical apparatus system
CN109565943B (en) * 2016-07-29 2020-12-11 住友电装株式会社 Electrical device and electrical device system
JP2018113342A (en) * 2017-01-12 2018-07-19 日東工業株式会社 Electrical equipment storage box
JP2021078316A (en) * 2019-11-13 2021-05-20 矢崎総業株式会社 Electric connection box
US11387638B2 (en) 2019-11-13 2022-07-12 Yazaki Corporation Electric connection box
JP7132205B2 (en) 2019-11-13 2022-09-06 矢崎総業株式会社 electric junction box

Similar Documents

Publication Publication Date Title
WO2016006393A1 (en) Gasket
JP5593162B2 (en) Waterproof stopper
US11081829B2 (en) Connector
JP2016127640A (en) Hermetically sealed box and hermetically sealing structure
WO2017006494A1 (en) Wire housing protector
US20200169072A1 (en) Stain relief bushing
US10412847B2 (en) Electronic device mounted to an industrial machine
CN107871944A (en) Connector
JP2020120422A (en) Grommet
JP2012013149A (en) Packing structure
WO2015159595A1 (en) Battery pack
JP5874655B2 (en) connector
US20170013737A1 (en) Housing
CN107534280B (en) Protector is accomodate to electric wire
JP6471361B2 (en) Packing for electrical equipment storage box
EP3021438B1 (en) Electrical insulating box with two options of tightness degree for electricity, information technology and/or telephony
JP5467883B2 (en) Packing and waterproof case using the same
JP2014212618A (en) Protector and wire harness
US20150053683A1 (en) Closure system for containers
JP3963801B2 (en) Seal structure of grommet for electrical junction box
JP5531761B2 (en) Waterproof packing structure
JP6868502B2 (en) Electrical junction box
JP2017524326A (en) Junction box for solar cell module
JP7258912B2 (en) electronic equipment housing
JP2016062814A (en) connector

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20171013

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20180727

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20180807

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20190226