JP2004330968A - Case bonding structure - Google Patents

Case bonding structure Download PDF

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Publication number
JP2004330968A
JP2004330968A JP2003131901A JP2003131901A JP2004330968A JP 2004330968 A JP2004330968 A JP 2004330968A JP 2003131901 A JP2003131901 A JP 2003131901A JP 2003131901 A JP2003131901 A JP 2003131901A JP 2004330968 A JP2004330968 A JP 2004330968A
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coupling end
sealing material
elastic sealing
fitting
fitting groove
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JP4075681B2 (en
Inventor
Koji Hisaka
幸司 日坂
Hiromitsu Maebatake
宏充 前畠
Kunie Matsuoka
邦枝 松岡
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Denso Corp
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Denso Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
    • B60H1/00514—Details of air conditioning housings
    • B60H1/00528—Connections between housing parts

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)
  • Gasket Seals (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a case coupling structure capable of improving sealing property of both divided case bodies without especially requiring a separate elastic sealing material. <P>SOLUTION: The case coupling structure comprises a first divided case body 11 having a coupling end surface 11a, and a second divided case body 12 having a coupling end surface 12a corresponding to the coupling end surface 11a of the first divided case body 11. Both coupling end surfaces 11a and 12a are engaged with each other to integrally couple the first and second divided case bodies 11 and 12. An elastic sealing material 16 is integrally molded to either of the both coupling end surfaces 11a and 12a, and the elastic sealing material 16 is brought into contact by pressure with the other of the both coupling end surfaces 11a and 12a by pressure, thereby sealing between both coupling end surfaces 11a and 12a. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は複数に分割された分割ケース体を一体に結合して構成されるケースの結合構造に関するもので、例えば、車両用空調装置のケースに適用して好適なものである。
【０００２】
【従来の技術】
従来、車両用空調装置の室内ユニットのケースは、空気通路を構成するとともに、熱交換器、通風制御用のドア等の機器を収容する役割を果たしている。この室内ユニットのケースは、樹脂成形上の形状の制約、収容機器の組み付け上の理由等から、通常、複数に分割された樹脂製分割ケース体を一体に結合した構成となっている。
【０００３】
具体的には、この複数の分割ケース体のうち、一方の分割ケース体の結合端面に凹形状の嵌合溝部を形成し、他方の分割ケース体の結合端面に凸形状の嵌合突起部を形成し、この嵌合溝部と嵌合突起部とを嵌合するとともに、両分割ケース体の結合端面間を金属ばねクリック、ねじ等の結合手段により一体に結合している。
【０００４】
このような凹凸嵌合形状を両分割ケース体の結合端面間に設定することにより、両分割ケース体の結合部からの空気洩れや水漏れを防止するようにしている。しかし、両分割ケース体は樹脂の成形品であるため、樹脂成形後における材料の冷却固化過程において材料のひけ、変形等が発生しやすい。そして、この樹脂材料のひけ、変形等による寸法バラツキが原因となって両分割ケース体の結合部に隙間が発生し、空気洩れ等の不具合を引き起こす。
【０００５】
そこで、本発明者は、先に、特願２００１ー３５４５９９号において、凸形状の嵌合突起部の頂部に幅の狭い先端形状を形成し、この幅の狭い先端形状の部分を嵌合溝部の底部に当てて押し潰すことにより、空気洩れ防止を図るものを提案している。
【０００６】
また、別の従来技術として、両分割ケース体の結合端面に弾性シール材の保持部を形成し、この両保持部の間にて弾性シール材を圧接保持することにより、結合端面間のシール性を向上するものが特許文献１にて提案されている。
【０００７】
【特許文献１】
フランス特許第２７８７７４６号公報
【０００８】
【発明が解決しようとする課題】
しかし、上記先願のものでは、実際に試作評価してみると、次のごとき不具合が生じることが判明した。すなわち、分割ケース体は機械的強度の確保のため、かなり剛性の高い樹脂材で成形され、この剛性の高い分割ケース体の嵌合突起部に幅の狭い先端形状の部分を一体成形しているので、幅の狭い先端形状部もかなり剛性の高い部分となる。このため、幅の狭い先端形状部の押し潰し量は少量、例えば、０．２〜０．３ｍｍ程度に限定されてしまう。
【０００９】
このように先端形状部の押し潰し量が小さいため、樹脂材料のひけ、変形等に起因する寸法バラツキの吸収範囲も小さくなる。この結果、樹脂成形条件のバラツキにより上記押し潰し量を上回る寸法バラツキが生じると、嵌合突起部の先端形状部と嵌合溝部の底部との間に隙間が生じて両分割ケース体の結合部から空気洩れ等が生じる。
【００１０】
この不具合を防止するためには、上記寸法バラツキが上記押し潰し量以内となるように常時、成形金型の微妙なチューニングを継続していく必要が生じ、分割ケース体の成形コストを大幅に上昇させる。更に、凸形状の嵌合突起部の頂部に幅の狭い先端形状を形成すること自体、ケース成形形状の煩雑化を招くので、このことも成形コスト上昇の原因となる。
【００１１】
また、特許文献１の従来技術では、両分割ケース体とは別体の弾性シール材を成形しておき、これを両分割ケース体の結合端面に組み付ける必要があるので、この別体の弾性シール材の組み付けコストが発生する。これに加えて、両分割ケース体の結合端面には弾性シール材の保持空間を構成する保持部を成形する必要があるので、ケース成形形状の煩雑化によりケースの成形コストを上昇させる。
【００１２】
本発明は上記点に鑑み、別体の弾性シール材を特別に必要とすることなく、両分割ケース体の結合部のシール性を向上できるケース結合構造を提供することを目的とする。
【００１３】
【課題を解決するための手段】
上記目的を達成するため、請求項１に記載の発明では、結合端面（１１ａ）を有する第１の分割ケース体（１１）と、第１の分割ケース体（１１）の結合端面（１１ａ）に対応する結合端面（１２ａ）を有する第２の分割ケース体（１２）とを備え、両結合端面（１１ａ、１２ａ）同士を互いに嵌合して第１、第２の分割ケース体（１１、１２）を一体に結合するケース結合構造において、両結合端面（１１ａ、１２ａ）のいずれか一方側に弾性シール材（１６）を一体成形し、弾性シール材（１６）を両結合端面（１１ａ、１２ａ）のうち他方側に圧接させて、両結合端面（１１ａ、１２ａ）間をシールすることを特徴とする。
【００１４】
これによると、第１、第２の分割ケース体（１１、１２）のいずれか一方側に弾性シール材（１６）をあらかじめ一体成形しておき、この一体成形された弾性シール材（１６）を用いて、両分割ケース体（１１、１２）の結合端面（１１ａ、１２ａ）間を確実にシールできる。
【００１５】
従って、弾性シール材（１６）の弾性変形によって、分割ケース体（１１、１２）の樹脂材料のひけ、変形等に起因する寸法バラツキを確実に吸収して、結合端面（１１ａ、１２ａ）間の隙間を確実に防止できるので、先願のものに比較してシール性を向上できる。
【００１６】
また、特許文献１の従来技術に比較すると、両分割ケース体とは別体の弾性シール材を別途成形すること、別体の弾性シール材の保持部を両分割ケース体の結合端面に成形すること、この保持部に別体の弾性シール材を組み付けることが一切不要となり、大幅なコスト低減を達成できる。
【００１７】
請求項２に記載の発明では、請求項１において、両結合端面（１１ａ、１２ａ）の一方側に凹形状の嵌合溝部（１４）を形成し、両結合端面（１１ａ、１２ａ）の他方側に凸形状の嵌合突起部（１５）を形成し、嵌合突起部（１５）の頂部および嵌合溝部（１４）の底部のいずれか一方に弾性シール材（１６）を一体成形し、嵌合突起部（１５）を嵌合溝部（１４）内に嵌合することにより、嵌合突起部（１５）の頂部と嵌合溝部（１４）の底部との間で弾性シール材（１６）を弾性的に圧縮変形させることを特徴とする。
【００１８】
これにより、嵌合突起部（１５）の頂部と嵌合溝部（１４）の底部との間で弾性シール材（１６）を弾性的に圧縮変形させてシール効果を発揮できる。従って、弾性シール材（１６）を嵌合突起部（１５）の頂部と嵌合溝部（１４）の底部との間の狭い空間に介在する比較的小さな体積のものとすることができる。
【００１９】
請求項３に記載の発明では、請求項１において、両結合端面（１１ａ、１２ａ）の一方側に凹形状の嵌合溝部（１４）を形成し、両結合端面（１１ａ、１２ａ）の他方側に凸形状の嵌合突起部（１５）を形成し、両結合端面（１１ａ、１２ａ）のうち、嵌合溝部（１４）が形成される側の結合端面（１１ａ）の側壁（１７、１８）表面に弾性シール材（１６）を一体成形し、嵌合突起部（１５）を嵌合溝部（１４）内に嵌合することにより、弾性シール材（１６）を嵌合突起部（１５）が形成される側の結合端面（１２ａ）の側壁（１９、２０）表面に圧接させることを特徴とする。
【００２０】
このように、嵌合溝部（１４）が形成される側の結合端面（１１ａ）の側壁（１７、１８）表面に一体成形した弾性シール材（１６）を用いても、両分割ケース体（１１、１２）の結合端面（１１ａ、１２ａ）間を確実にシールできる。
【００２１】
請求項４に記載の発明では、請求項３において、弾性シール材（１６）を、嵌合溝部（１４）が形成される側の結合端面（１１ａ）の内外の両側壁（１７、１８）のうち、内側の側壁（１７）表面に一体成形し、弾性シール材（１６）を、嵌合突起部（１５）が形成される側の結合端面（１２ａ）の内外の両側壁（１９、２０）のうち、内側の側壁（１９）表面に圧接させることを特徴とする。
【００２２】
これによると、嵌合溝部（１４）が形成される側の結合端面（１１ａ）の内側の側壁（１７）表面に一体成形した弾性シール材（１６）を用いて、両結合端面（１１ａ、１２ａ）間をシールできる。従って、両分割ケース体（１１、１２）を結合して構成されるケース構造の内部に流体圧（風圧等）が作用する用途においては、この流体圧によって弾性シール材（１６）を、嵌合突起部（１５）が形成される側の結合端面（１２ａ）の内側の側壁（１９）表面により一層強く圧接させて、シール性を向上できる。
【００２３】
請求項５に記載の発明のように、請求項３において、弾性シール材（１６）を、嵌合溝部（１４）が形成される側の結合端面（１１ａ）の内外の両側壁（１７、１８）のうち、外側の側壁（１８）表面に一体成形し、弾性シール材（１６）を、嵌合突起部（１５）が形成される側の結合端面（１２ａ）の内外の両側壁（１９、２０）のうち、外側の側壁（２０）表面に圧接させるようにしてもよい。
【００２４】
請求項６に記載の発明では、請求項１において、両結合端面（１１ａ、１２ａ）の一方に凹形状の嵌合溝部（１４）を形成し、両結合端面（１１ａ、１２ａ）の他方に凸形状の嵌合突起部（１５）を形成し、両結合端面（１１ａ、１２ａ）のうち、嵌合突起部（１５）が形成される側の結合端面（１２ａ）の側壁（１９、２０）表面に弾性シール材（１６）を一体成形し、嵌合突起部（１５）を嵌合溝部（１４）内に嵌合することにより、弾性シール材（１６）を嵌合溝部（１４）が形成される側の結合端面（１１ａ）の側壁（１７、１８）表面に圧接させることを特徴とする。
【００２５】
このように、嵌合突起部（１５）が形成される側の結合端面（１２ａ）の側壁（１９、２０）表面に一体成形した弾性シール材（１６）を用いても、両分割ケース体（１１、１２）の結合端面（１１ａ、１２ａ）間を確実にシールできる。
【００２６】
請求項７に記載の発明では、請求項６において、弾性シール材（１６）を、嵌合突起部（１５）が形成される側の結合端面（１２ａ）の内外の両側壁（１９、２０）のうち、内側の側壁（１９）表面に一体成形し、弾性シール材（１６）を、嵌合溝部（１４）が形成される側の結合端面（１１ａ）の内外の両側壁（１７、１８）のうち、内側の側壁（１７）表面に圧接させることを特徴とする。
【００２７】
これによると、請求項４と同様に、両分割ケース体（１１、１２）を結合して構成されるケース構造の内部に流体圧（風圧等）が作用する用途においては、この流体圧によって弾性シール材（１６）を、嵌合溝部（１４）が形成される側の結合端面（１１ａ）の内側の側壁（１７）表面により一層強く圧接させて、シール性を向上できる。
【００２８】
請求項８に記載の発明のように、請求項６において、弾性シール材（１６）を、嵌合突起部（１５）が形成される側の結合端面（１２ａ）の内外の両側壁（１９、２０）のうち、外側の側壁（２０）表面に一体成形し、弾性シール材（１６）を、嵌合溝部（１４）が形成される側の結合端面（１１ａ）の内外の両側壁（１７、１８）のうち、外側の側壁（１８）表面に圧接させるようにしてもよい。
【００２９】
請求項９に記載の発明では、請求項１において、両結合端面（１１ａ、１２ａ）の一方に凹形状の嵌合溝部（１４）を形成し、両結合端面（１１ａ、１２ａ）の他方に凸形状の嵌合突起部（１５）を形成し、嵌合溝部（１４）が形成される側の結合端面（１１ａ）の内外の両側壁（１７、１８）のうち、内側の側壁（１７）を外側の側壁（１８）より高さの低い形状とし、内側の側壁（１７）の先端部に弾性シール材（１６）を一体成形し、弾性シール材（１６）を嵌合突起部（１５）の内側壁面に圧接させることを特徴とする。
【００３０】
これによると、弾性シール材（１６）自身を、嵌合溝部（１４）が形成される側の結合端面（１１ａ）の内側の側壁（１７）の一部として構成することにより、両結合端面（１１ａ、１２ａ）間のシール効果を発揮できる。
【００３１】
しかも、請求項４、７と同様に、両分割ケース体（１１、１２）を結合して構成されるケース構造の内部に流体圧（風圧等）が作用する用途においては、この流体圧によって弾性シール材（１６）を、嵌合突起部（１５）の内側壁面により一層強く圧接させて、シール性を向上できる。
【００３２】
請求項１０に記載の発明では、請求項１において、両結合端面（１１ａ、１２ａ）の一方に凹形状の嵌合溝部（１４）を形成し、両結合端面（１１ａ、１２ａ）の他方に凸形状の嵌合突起部（１５）を形成し、嵌合溝部（１４）が形成される側の結合端面（１１ａ）の内外の両側壁（１７、１８）のうち、外側の側壁（１８）を内側の側壁（１７）より高さの低い形状とし、外側の側壁（１８）の先端部に弾性シール材（１６）を一体成形し、弾性シール材（１６）を嵌合突起部（１５）の外側壁面に圧接させることを特徴とする。
【００３３】
これによると、弾性シール材（１６）自身を、嵌合溝部（１４）が形成される側の結合端面（１１ａ）の外側の側壁（１８）の一部として構成することにより、両結合端面（１１ａ、１２ａ）間のシール効果を発揮できる。
【００３４】
請求項１１に記載の発明のように、請求項１において、両結合端面（１１ａ、１２ａ）の一方に凹形状の嵌合溝部（１４）を形成し、両結合端面（１１ａ、１２ａ）の他方に凸形状の嵌合突起部（１５）を形成し、嵌合溝部（１４）が形成される側の結合端面（１１ａ）に、弾性シール材（１６）を嵌合溝部（１４）を覆うことが可能な幅寸法を有するシート状に一体成形し、嵌合突起部（１５）と嵌合溝部（１４）との間の嵌合部全体にわたってシート状の弾性シール材（１６）を挟み込むようにしてもよい。
【００３５】
これによっても、両結合端面（１１ａ、１２ａ）間のシール効果を確実に発揮できる。
【００３６】
上記した各請求項の記載から理解されるように、本発明において、「結合端面」という用語は、第１、第２の分割ケース体（１１、１２）の相対向する平坦な端面部だけでなく、嵌合溝部（１４）、嵌合突起部（１５）およびそれらの側壁（１７〜２０）をも包含する意味で用いている。
【００３７】
なお、上記各手段の括弧内の符号は、後述する実施形態に記載の具体的手段との対応関係を示すものである。
【００３８】
【発明の実施の形態】
（第１実施形態）
本実施形態は車両用空調装置の室内ユニットのケース結合構造に適用した例である。図１は、車両用空調装置の室内ユニットの斜視図で、この室内ユニットのケース１０は周知のように冷房用蒸発器、暖房用ヒータコア等の熱交換器、あるいは通風制御用ドア等の空調機器を収容し、かつ、車室内へ向かって送風される空気の通路を構成するものである。
【００３９】
ケース１０は、本例では上下分割された２つの分割ケース体１１、１２により構成されており、この上下の分割ケース体１１、１２を嵌合組み付けした後に、ねじ、金属ばねクリック等の結合手段を用いて上下の分割ケース体１１、１２を一体に結合する。この分割ケース体１１、１２はポリプロピレンのようなある程度の弾性を有する強度的にも優れた樹脂材料で成形されている。
【００４０】
なお、本例ではケース１０の右端部に開口部１３を形成するとともに、ケース１０の左端部にも開口部（図示せず）を形成している。従って、上下の分割ケース体１１、１２はそれぞれ概略断面Ｕ形状に形成され、断面Ｕ形状の端面部分が相互の結合端面１１ａ、１２ａとなっている。
【００４１】
図２（ａ）（ｂ）（ｃ）はいずれも図１のＡ−Ａ断面図であり、図２（ａ）は上下の分割ケース体１１、１２の嵌合組み付け工程の途中の状態を示し、これに対し、図２（ｂ）（ｃ）は上下の分割ケース体１１、１２の嵌合組み付け工程の完了状態を示す。
【００４２】
上下の両分割ケース体１１、１２の結合端面１１ａ、１２ａのうち、上側の結合端面１１ａに凹形状の嵌合溝部１４を形成し、下側の結合端面１２ａに凸形状の嵌合突起部１５を形成している。ここで、嵌合溝部１４および嵌合突起部１５は、嵌合突起部１５を嵌合溝部１４内に嵌合できるように両者の寸法を設定してあり、また、嵌合突起部１５の先端側の幅寸法をテーパ状に細くして、嵌合突起部１５を嵌合溝部１４内に嵌合しやすくしてある。
【００４３】
また、嵌合溝部１４および嵌合突起部１５は、結合端面１１ａ、１２ａの全長にわたって帯状に延びるように形成してあるので、結合端面１１ａ、１２ａの全長にわたって凹凸嵌合部を構成できる。
【００４４】
更に、嵌合突起部１５の頂部に弾性シール材１６を一体成形している。ここで、弾性シール材１６は、図２（ａ）に示すように嵌合溝部１４の底部に圧接する前の自由状態では頂部が尖った断面三角形状になっている。そして、嵌合突起部１５の全長、すなわち、結合端面１１ａ、１２ａの全長にわたって帯状に延びるように形成してある。
【００４５】
弾性シール材１６の具体的材質としては、常温ではゴム弾性を示し、所定温度以上に加熱すると流動性を示し成形可能となる熱可塑性エラストマーを用いる。より具体的には、ポリプロピレンにゴム弾性を示す材料としてエチレン・プロピレン・ジエン共重合ゴム（ＥＰＤＭ）を混合したものを用いる。
【００４６】
この熱可塑性エラストマーを用いることにより、弾性シール材１６を下側分割ケース体１２の嵌合突起部１５の頂部に公知の２色成形（射出成形）の手法にて一体成形できる。なお、弾性シール材１６の具体的材質として、下側分割ケース体１２の材質（ポリプロピレン）と同種のポリプロピレン系の熱可塑性エラストマーを用いることにより、弾性シール材１６と下側分割ケース体１２との接合を良好に行うことができる。
【００４７】
ところで、図２（ａ）は、下側分割ケース体１２の嵌合突起部１５を上側分割ケース体１１の嵌合溝部１４内に嵌合して、上下の分割ケース体１１、１２を組み付ける工程の途中の状態を示し、この図２（ａ）の状態から嵌合突起部１５と嵌合溝部１４との嵌合を更に進行すると、両分割ケース体１１、１２の結合端面１１ａ、１２ａ同士が当たって、嵌合突起部１５と嵌合溝部１４との嵌合の進行が終了する。
【００４８】
この状態では、嵌合突起部１５の頂部の弾性シール材１６が嵌合溝部１４の底部に押し当てられ弾性的に圧縮変形する。これにより、弾性シール材１６が嵌合溝部１４の底部に弾性的に圧接して嵌合突起部１５と嵌合溝部１４との嵌合部をシールする。
【００４９】
ここで、図２（ｂ）（ｃ）に示す嵌合突起部１５と嵌合溝部１４との嵌合終了状態において、嵌合突起部１５の頂部と嵌合溝部１４の底部との間隔は、ケース成形後の冷却固化過程における樹脂材料のひけ、変形等により変動するが、弾性シール材１６は弾性体であるから、上記間隔の変動幅（寸法バラツキ）を上回る弾性変形量を容易に確保できる。
【００５０】
従って、弾性シール材１６の高さを上記間隔の予想最大値を上回る寸法に予め設定しておくことにより、上記間隔の変動幅を弾性シール材１６の弾性変形により吸収して、嵌合突起部１５と嵌合溝部１４との嵌合部を確実にシールできる。
【００５１】
両分割ケース体１１、１２の結合端面１１ａ、１２ａは図１に示すように帯状に延びる長尺形状であるから、両結合端面１１ａ、１２ａが図２（ｂ）のように良好に密着する部位と、図２（ｃ）のように樹脂材料のひけ、変形等により結合端面１１ａと結合端面１２ａとの間に隙間ａが発生してしまう部位とが混在することがよく発生する。
【００５２】
図２（ｃ）のように両結合端面１１ａ、１２ａの間に隙間ａが発生しても、本実施形態によると、この隙間ａからの空気洩れ等を弾性シール材１６のシール作用によって確実に防止できる。
【００５３】
そのため、樹脂材料のひけ、変形等を最小にするように、射出成形の金型を常に微妙に調整する、煩雑な金型調整作業を大幅に簡略化できる。
【００５４】
（第２実施形態）
上記の第１実施形態では、下側分割ケース体１１の嵌合突起部１５の頂部に弾性シール材１６を一体成形したが、第２実施形態では、図３に示すように弾性シール材１６を上側分割ケース体１２の嵌合溝部１４の底部に一体成形している。このようにしても、第１実施形態と同様の作用効果を発揮できる。
【００５５】
（第３実施形態）
上記の第１、第２実施形態では、嵌合突起部１５の頂部と嵌合溝部１４の底部との対向部位に弾性シール材１６を配置しているが、第３実施形態では、図４（ａ）（ｂ）に示すように、両結合端面１１ａ、１２ａのうち、嵌合溝部１４が形成される上側の結合端面１１ａの内外の側壁１７、１８に弾性シール材１６をシート状の形状にて一体成形している。
【００５６】
より具体的には、図４（ａ）の例では、上側結合端面１１ａの内側の側壁１７にシート状の弾性シール材１６を一体成形し、図４（ｂ）の例では、上側結合端面１１ａの外側の側壁１８にシート状の弾性シール材１６を一体成形している。太実線１６ａは弾性シール材１６と側壁１７、１８との接合部を示す。このシート状の弾性シール材１６も上下の両結合端面１１ａ，１２ａの全長にわたって延びるように帯状に形成される。
【００５７】
第３実施形態において図４（ａ）の例では、嵌合突起部１５を嵌合溝部１４内に嵌合して上下の分割ケース体１１、１２を嵌合組み付けする際に、下側結合端面１２ａの内側の側壁１９によりシート状の弾性シール材１６の下端側（自由端側）がケース内側方向に押し付けられるように弾性シール材１６を成形してあるので、弾性シール材１６はこの押し付け力に対する弾性反力を発生して弾性シール材１６の下端側が側壁１９の表面に圧接する。
【００５８】
第３実施形態において図４（ｂ）の例においても、下側結合端面１２ａの外側の側壁２０によりシート状の弾性シール材１６の下端側（自由端側）がケース外側方向に押し付けられ、この押し付け力に対する弾性反力を弾性シール材１６が発生するので、弾性シール材１６の下端側が側壁２０の表面に圧接する。
【００５９】
このように、第３実施形態によると、嵌合溝部１４が形成される上側の結合端面１１ａの内外の側壁１７、１８に一体成形したシート状の弾性シール材１６の下端側（自由端側）を、嵌合突起部１５が形成される下側の結合端面１２ａの内外の側壁１９、２０の表面に弾性的に圧接して自己シール作用を発揮する。
【００６０】
そのため、両結合端面１１ａ、１２ａ間に図２（ｃ）のような隙間ａが発生しても確実に空気漏れの不具合を防止できる。
【００６１】
第３実施形態において、図４（ａ）の例では、ケース１０内を送風される空気の風圧がシート状の弾性シール材１６の表面全体に作用して弾性シール材１６が下側結合端面１２ａの内側の側壁１９により強く押し付けられるので、図４（ｂ）の例に比較してシール性能を一層向上できる。
【００６２】
（第４実施形態）
上記の第３実施形態では、両結合端面１１ａ、１２ａのうち、嵌合溝部１４が形成される上側の結合端面１１ａの内外の側壁１７、１８に弾性シール材１６をシート状の形状にて一体成形しているが、第４実施形態では、図５（ａ）（ｂ）に示すように両結合端面１１ａ、１２ａのうち、嵌合突起部１５が形成される下側の結合端面１２ａの内外の側壁１９、２０に弾性シール材１６をシート状の形状にて一体成形している。
【００６３】
このように下側の結合端面１２ａの内外の側壁１９、２０に弾性シール材１６を一体成形しても、第３実施形態と同様の作用効果を発揮できる。また、第４実施形態においても、図５（ａ）の例では、ケース１０内を送風される空気の風圧によりシート状弾性シール材１６の上端側（自由端側）を上側結合端面１１ａの内側の側壁１７により強く押し付けることができるので、図５（ｂ）の例に比較してシール性能を一層向上できる。
【００６４】
（第５実施形態）
上記の第３、第４実施形態では、上側の結合端面１１ａの内外の側壁１７、１８または下側の結合端面１２ａの内外の側壁１９、２０にシート状弾性シール材１６を一体成形しているが、第５実施形態では、図６（ａ）（ｂ）に示すように、両結合端面１１ａ、１２ａのうち、嵌合溝部１４が形成される上側の結合端面１１ａの内外の側壁１７、１８の一部として弾性シール材１６をシート状の形状にて一体成形している。
【００６５】
具体的には、図６（ａ）の例では、嵌合溝部１４が形成される上側の結合端面１１ａの内外の側壁１７、１８のうち、内側の側壁１７の高さを外側の側壁１８よりも所定量低い形状とし、この内側の側壁１７の先端部に前記所定量に相当する高さを持つシート状の弾性シール材１６を一体成形している。これにより、内側の側壁１７の一部をシート状の弾性シール材１６自身で構成することができる。
【００６６】
これに対し、図６（ｂ）の例では、上側の結合端面１１ａの内外の側壁１７、１８のうち、外側の側壁１８の先端側の一部をシート状の弾性シール材１６自身で構成している。
【００６７】
第５実施形態によると、上側の結合端面１１ａの嵌合溝部１４内に下側の結合端面１２ａの嵌合突起部１５を嵌合するときに、図６（ａ）の例ではシート状の弾性シール材１６が嵌合突起部１５によってケース内側方向に押し付けられる。また、図６（ｂ）の例では、シート状の弾性シール材１６が嵌合突起部１５によってケース外側方向に押し付けられる。
【００６８】
これにより、弾性シール材１６に弾性反力が発生して弾性シール材１６が嵌合突起部１５の内側壁面または外側壁面に圧接して自己シール作用を発揮する。更に、図６（ａ）の例ではケース１０内の風圧によりシート状弾性シール材１６の下端側（自由端側）を嵌合突起部１５の内側壁面に一層強く押し付けることができるので、図６（ｂ）の例に比較してシール性能を一層向上できる。
【００６９】
なお、図３〜図６はいずれも図２（ａ）に対応する、上下の分割ケース体１１、１２の組み付け途中の状態を示す。
【００７０】
（第６実施形態）
第１〜第５実施形態では、上側の分割ケース体１１の結合端面１１ａに嵌合溝部１４を形成し、下側の分割ケース体１２の結合端面１２ａに嵌合突起部１５を形成しているが、第６実施形態では、これとは逆に、図７に示すように上側の分割ケース体１１の結合端面１１ａに嵌合突起部１５を形成し、下側の分割ケース体１２の結合端面１２ａに嵌合溝部１４を形成している。そして、第６実施形態では、下側の分割ケース体１２の結合端面１２ａの外側の側壁２０にシート状弾性シール材１６の一端部が接合されるようにシート状弾性シール材１６を一体成形している。
【００７１】
ここで、シート状弾性シール材１６の長さ（図７の紙面垂直方向の長さ）は上記各実施形態と同様に結合端面１１ａ、１２ａの全長寸法と同等であり、一方、シート状弾性シール材１６の幅寸法（図７の左右方向の長さ）は、図７（ｂ）から理解されるように嵌合溝部１４の内壁面と結合端面１２ａの平坦面との合計沿面長さ以上に設定してある。ここで、合計沿面長さとは、嵌合溝部１４の内壁面と結合端面１２ａの平坦面とによる略Ｕ形状の断面形状の表面に沿う長さを言う。
【００７２】
第６実施形態による上下の分割ケース体１１、１２の組み付け方法を説明すると、下側の分割ケース体１２の結合端面１２ａの外側の側壁２０に一体成形されたシート状弾性シール材１６をまず図７（ａ）に示すように、嵌合溝部１４上を覆うように結合端面１２ａの上方に被せておく。
【００７３】
次に、図７（ａ）の矢印に示すように上側の分割ケース体１１の嵌合突起部１５をシート状弾性シール材１６の上方から下側の分割ケース体１２の嵌合溝部１４に向かって押し込む。これにより、嵌合突起部１５を図７（ｂ）に示すようにシート状弾性シール材１６とともに嵌合溝部１４内に挿入できる。
【００７４】
そのため、嵌合突起部１５の嵌合溝部１４内への挿入が終了した状態では、嵌合突起部１５と嵌合溝部１４との間の嵌合部全体および結合端面１１ａ、１２ａ相互の平坦面間にシート状弾性シール材１６を挟み込み、シート状弾性シール材１６を弾性的に圧縮変形させることができる。従って、上下の分割ケース体１１、１２の結合部を確実にシールできる。
【００７５】
なお、図７では下側の分割ケース体１２の結合端面１２ａの外側の側壁２０にシート状弾性シール材１６の一端部が接合されるようにシート状弾性シール材１６を一体成形しているが、下側の分割ケース体１２の結合端面１２ａの内側の側壁１９にシート状弾性シール材１６の一端部が接合されるようにシート状弾性シール材１６を一体成形してもよい。
【００７６】
（第７実施形態）
第６実施形態では、シート状弾性シール材１６の一端部のみが下側の分割ケース体１２の結合端面１２ａの外側の側壁２０または内側の側壁１９に接合されるようにシート状弾性シール材１６を一体成形しているが、第７実施形態では、図８（ａ）に示すようにシート状弾性シール材１６の一端部が下側の分割ケース体１２の結合端面１２ａの外側の側壁２０に接合され、シート状弾性シール材１６の他端部が下側分割ケース体１２の結合端面１２ａの内側の側壁１９に接合されるように、シート状弾性シール材１６を下側の分割ケース体１２に一体成形している。
【００７７】
ここで、シート状弾性シール材１６の幅寸法は、第６実施形態と同様に嵌合溝部１４の内壁面と結合端面１２ａの平坦面との合計沿面長さ以上に設定するので、シート状弾性シール材１６の成形時の形状は図８（ａ）に示すように下側の分割ケース体１２の結合端面１２ａの上方へ山形に突き出す形状となる。
【００７８】
図８（ｂ）は、第７実施形態において上側の分割ケース体１１の嵌合突起部１５をシート状弾性シール材１６とともに嵌合溝部１４内に挿入する過程を示すものである。第７実施形態においても、嵌合突起部１５と嵌合溝部１４との間の嵌合部全体および結合端面１１ａ、１２ａ相互の平坦面間でシート状弾性シール材１６を挟み込むことにより、上下の分割ケース体１１、１２の結合部を確実にシールできる。
【００７９】
なお、第７実施形態では、シート状弾性シール材１６の両端部が下側分割ケース体１２の結合端面１２ａの内外の側壁１９、２０に接合されるようにシート状弾性シール材１６を山形の突出形状に成形するので、射出成形ではシート状弾性シール材１６の山形の突出形状を成形するための型抜きができない。従って、第７実施形態では、下側分割ケース体１２を射出成形にて成形した後にシート状弾性シール材１６の部分をブロー成形にて下側分割ケース体１２に一体成形すればよい。
【００８０】
（他の実施形態）
なお、上記の第１実施形態では、車両用空調装置の室内ユニットのケース１０を構成する分割ケース体１１、１２の結合構造について説明したが、本発明のケース結合構造は、ダクトのように空気通路を形成するだけで、内部に機器を収容しない構造に対しても同様に適用できる。
【図面の簡単な説明】
【図１】本発明の第１実施形態を示す車両用空調装置の室内ユニットの斜視図である。
【図２】図１のＡ−Ａ断面図である。
【図３】第２実施形態の要部断面図で、図１のＡ−Ａ断面図に相当する。
【図４】第３実施形態の要部断面図で、図１のＡ−Ａ断面図に相当する。
【図５】第４実施形態の要部断面図で、図１のＡ−Ａ断面図に相当する。
【図６】第５実施形態の要部断面図で、図１のＡ−Ａ断面図に相当する。
【図７】第６実施形態による組み付け過程を示す要部断面図である。
【図８】第７実施形態による組み付け過程を示す要部断面図である。
【符号の説明】
１０…ケース、１１、１２…分割ケース体、１１ａ、１２ａ…結合端面、１４…嵌合溝部、１５…嵌合突起部、１６…弾性シール材。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a case connecting structure constituted by integrally connecting a plurality of divided case bodies, and is suitably applied, for example, to a case of a vehicle air conditioner.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a case of an indoor unit of a vehicle air conditioner has a role of forming an air passage and accommodating devices such as a heat exchanger and a door for ventilation control. Usually, the case of the indoor unit is configured such that a plurality of divided resin case bodies are integrally connected to each other due to restrictions on the shape of the resin molding, as well as reasons for assembling the housing equipment.
[0003]
Specifically, of the plurality of divided case bodies, a concave fitting groove is formed on the coupling end face of one of the divided case bodies, and a convex fitting projection is formed on the coupling end face of the other divided case body. The fitting groove and the fitting protrusion are fitted together, and the connecting end faces of the two split case bodies are integrally connected by a connecting means such as a metal spring click or a screw.
[0004]
By setting such a concave-convex fitting shape between the joint end surfaces of the two split case bodies, air leakage and water leakage from the joint portion of the two split case bodies are prevented. However, since both split case bodies are molded products of resin, sinking, deformation, and the like of the material are likely to occur in the process of cooling and solidifying the material after resin molding. Then, a gap is generated in a joint portion between the two split case bodies due to a dimensional variation due to sink, deformation, or the like of the resin material, which causes problems such as air leakage.
[0005]
In view of this, the present inventor has previously described in Japanese Patent Application No. 2001-354599, a narrow tip shape is formed at the top of a convex fitting projection, and the narrow tip portion is formed as a fitting groove portion. It proposes one that aims to prevent air leakage by crushing against the bottom.
[0006]
Further, as another conventional technique, a holding portion of an elastic sealing material is formed on a connecting end face of both split case bodies, and the elastic sealing material is pressed and held between the two holding sections, so that the sealing property between the connecting end faces is improved. Has been proposed in Patent Document 1.
[0007]
[Patent Document 1]
French Patent 2,787,746
[0008]
[Problems to be solved by the invention]
However, when the above-mentioned prior application was actually evaluated for trial production, it was found that the following problems occurred. In other words, the split case body is formed of a resin material having a relatively high rigidity in order to secure mechanical strength, and a narrow tip portion is integrally formed with the fitting projection of the high rigid split case body. Therefore, a narrow tip portion is also a portion having a considerably high rigidity. For this reason, the amount of crushing of the narrow tip portion is limited to a small amount, for example, about 0.2 to 0.3 mm.
[0009]
As described above, since the squeezing amount of the tip shape portion is small, the absorption range of the dimensional variation due to sink, deformation, and the like of the resin material is also reduced. As a result, when a dimensional variation exceeding the above crushing amount occurs due to a variation in the resin molding conditions, a gap is generated between the tip shape portion of the fitting projection and the bottom of the fitting groove, and the joining portion of the two split case bodies is formed. Causes air leakage and the like.
[0010]
In order to prevent this inconvenience, it is necessary to constantly finely tune the molding die so that the above-mentioned dimensional variation is within the above-mentioned crushing amount, which significantly increases the molding cost of the split case body. Let it. Furthermore, since the formation of the narrow tip at the top of the convex fitting protrusion itself complicates the case molding shape, this also causes an increase in molding cost.
[0011]
Further, in the prior art of Patent Document 1, it is necessary to form an elastic sealing material separate from the two divided case bodies and to assemble the elastic sealing material on the connecting end face of the two divided case bodies. Material assembling costs are incurred. In addition, since a holding portion that forms a holding space for the elastic sealing material needs to be formed on the joint end surface of the two split case bodies, the case forming cost is increased by complicating the case forming shape.
[0012]
In view of the above, it is an object of the present invention to provide a case coupling structure that can improve the sealing performance of a coupling portion between two split case members without specially requiring a separate elastic sealing material.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, a first split case body (11) having a connecting end face (11a) and a connecting end face (11a) of the first split case body (11) are provided. A second split case body (12) having a corresponding connecting end face (12a), and the two connecting end faces (11a, 12a) are fitted with each other to form a first and a second split case body (11, 12). ), The elastic sealing material (16) is integrally formed on one of the two connecting end surfaces (11a, 12a), and the elastic sealing material (16) is connected to the two connecting end surfaces (11a, 12a). ) Is pressed against the other side to seal between the two connection end faces (11a, 12a).
[0014]
According to this, an elastic sealing material (16) is integrally molded in advance on one of the first and second split case bodies (11, 12), and the integrally molded elastic sealing material (16) is formed. By using this, it is possible to reliably seal between the coupling end faces (11a, 12a) of the two split case bodies (11, 12).
[0015]
Therefore, the elastic deformation of the elastic sealing material (16) reliably absorbs the dimensional variation caused by sinking, deformation, and the like of the resin material of the divided case bodies (11, 12), and the gap between the coupling end faces (11a, 12a) is absorbed. Since the gap can be reliably prevented, the sealing performance can be improved as compared with the prior application.
[0016]
Also, as compared with the prior art of Patent Document 1, a separate elastic sealing material is separately formed from both divided case bodies, and a holding portion of the separate elastic sealing material is formed on a joint end surface of both divided case bodies. In addition, there is no need to attach a separate elastic sealing material to the holding portion, and a significant cost reduction can be achieved.
[0017]
According to the second aspect of the present invention, in the first aspect, a concave fitting groove (14) is formed on one side of both the coupling end faces (11a, 12a), and the other side of the both coupling end faces (11a, 12a). An elastic sealing material (16) is integrally formed on one of the top of the fitting projection (15) and the bottom of the fitting groove (14). By fitting the mating projection (15) into the fitting groove (14), the elastic sealing material (16) is placed between the top of the fitting projection (15) and the bottom of the fitting groove (14). It is characterized by being elastically deformed by compression.
[0018]
Thereby, the elastic sealing material (16) can be elastically compressed and deformed between the top of the fitting projection (15) and the bottom of the fitting groove (14) to exhibit a sealing effect. Therefore, the elastic sealing material (16) can be of a relatively small volume interposed in a narrow space between the top of the fitting projection (15) and the bottom of the fitting groove (14).
[0019]
According to the third aspect of the present invention, in the first aspect, a concave fitting groove (14) is formed on one side of both the coupling end faces (11a, 12a), and the other side of the both coupling end faces (11a, 12a). And a side wall (17, 18) of the coupling end surface (11a) of the two coupling end surfaces (11a, 12a) on which the fitting groove (14) is formed. The elastic sealing material (16) is integrally formed on the surface, and the fitting projection (15) is fitted into the fitting groove (14). It is characterized by being pressed against the surface of the side wall (19, 20) of the coupling end face (12a) on the side to be formed.
[0020]
As described above, even when the elastic sealing material (16) integrally formed on the surface of the side wall (17, 18) of the coupling end surface (11a) on the side where the fitting groove (14) is formed is used, the two split case bodies (11 , 12) can be reliably sealed between the coupling end faces (11a, 12a).
[0021]
According to the fourth aspect of the present invention, in the third aspect, the elastic sealing material (16) is provided on both side walls (17, 18) inside and outside the coupling end face (11a) on the side where the fitting groove (14) is formed. Of these, the inner side wall (17) is formed integrally with the surface thereof, and the elastic sealing material (16) is provided on both sides (19, 20) inside and outside the coupling end face (12a) on the side where the fitting projection (15) is formed. Among them, the inner side wall (19) is pressed against the surface.
[0022]
According to this, both coupling end faces (11a, 12a) are formed using an elastic sealing material (16) integrally formed on the surface of the side wall (17) inside the coupling end face (11a) on the side where the fitting groove (14) is formed. ) Can be sealed. Therefore, in an application in which a fluid pressure (wind pressure or the like) acts on the inside of a case structure formed by connecting the two divided case bodies (11, 12), the elastic seal member (16) is fitted by the fluid pressure. The inner wall (19) of the joint end face (12a) on which the projection (15) is formed is pressed more strongly against the surface of the side wall (19), thereby improving the sealing performance.
[0023]
According to the fifth aspect of the present invention, in the third aspect, the elastic sealing member (16) is provided with the side walls (17, 18) inside and outside the coupling end face (11a) on the side where the fitting groove (14) is formed. ), The elastic sealing material (16) is integrally formed on the surface of the outer side wall (18), and the inner and outer side walls (19, 20) of the coupling end face (12a) on the side where the fitting projection (15) is formed. 20), the outer side wall (20) may be pressed against the surface.
[0024]
According to a sixth aspect of the present invention, in the first aspect, a concave fitting groove (14) is formed on one of the two coupling end surfaces (11a, 12a), and a convex is formed on the other of the two coupling end surfaces (11a, 12a). Forming a fitting projection (15), the surface of the side wall (19, 20) of the coupling end face (12a) on the side where the fitting projection (15) is formed, of the two coupling end faces (11a, 12a) The elastic sealing material (16) is integrally formed with the elastic sealing material (16), and the fitting protrusion (15) is fitted into the fitting groove (14), whereby the fitting groove (14) is formed. The pressure is brought into contact with the surface of the side wall (17, 18) of the coupling end face (11a) on the side of the connection end.
[0025]
As described above, even when the elastic sealing material (16) integrally formed on the surface of the side wall (19, 20) of the coupling end surface (12a) on the side where the fitting projection (15) is formed is used, the two split case bodies ( It is possible to reliably seal between the coupling end faces (11a, 12a) of (11, 12).
[0026]
According to a seventh aspect of the present invention, in the sixth aspect, the elastic sealing member (16) is provided with both side walls (19, 20) inside and outside of the coupling end face (12a) on the side where the fitting projection (15) is formed. Of the inner side wall (19), and the elastic sealing material (16) is formed integrally with the inner and outer side walls (17, 18) of the coupling end face (11a) on the side where the fitting groove (14) is formed. Of these, the inner wall (17) is brought into pressure contact with the surface.
[0027]
According to this, as in the case of the fourth aspect, in an application in which a fluid pressure (wind pressure or the like) acts on the inside of a case structure constituted by connecting the two divided case bodies (11, 12), the fluid pressure causes elasticity. The sealing material (16) is more strongly pressed against the surface of the side wall (17) inside the coupling end surface (11a) on the side where the fitting groove (14) is formed, so that the sealing performance can be improved.
[0028]
According to an eighth aspect of the present invention, in the sixth aspect, the elastic sealing material (16) is provided with two side walls (19, 20) inside and outside the coupling end face (12a) on the side where the fitting projection (15) is formed. 20), the elastic sealing material (16) is integrally formed on the surface of the outer side wall (20), and the inner and outer side walls (17, 20) of the coupling end face (11a) on the side where the fitting groove (14) is formed. 18), the outer side wall (18) may be pressed against the surface.
[0029]
According to the ninth aspect of the present invention, in the first aspect, a concave fitting groove (14) is formed on one of the two coupling end faces (11a, 12a), and a convex is formed on the other of the two coupling end faces (11a, 12a). The inner side wall (17) of the inner and outer side walls (17, 18) of the coupling end surface (11a) on the side where the fitting groove (14) is formed is formed. The outer side wall (18) has a shape lower in height than the inner side wall (17). An elastic sealing material (16) is integrally formed at the tip of the inner side wall (17), and the elastic sealing material (16) is attached to the fitting projection (15). It is characterized by being pressed against the inner wall surface.
[0030]
According to this, by forming the elastic sealing material (16) itself as a part of the side wall (17) inside the coupling end face (11a) on which the fitting groove (14) is formed, both coupling end faces ( The sealing effect between 11a and 12a) can be exhibited.
[0031]
Further, in the case where fluid pressure (wind pressure or the like) acts on the inside of the case structure formed by connecting the two divided case bodies (11, 12), the fluid pressure causes elasticity. The sealing material (16) is more strongly pressed against the inner wall surface of the fitting projection (15), so that the sealing property can be improved.
[0032]
According to the tenth aspect of the present invention, in the first aspect, a concave fitting groove portion (14) is formed on one of the two coupling end surfaces (11a, 12a), and is convex on the other of the two coupling end surfaces (11a, 12a). The outer side wall (18) of the inner and outer side walls (17, 18) of the coupling end face (11a) on the side where the fitting groove (14) is formed is formed. The inner side wall (17) is lower in height than the inner side wall (17), an elastic sealing material (16) is integrally formed at the tip of the outer side wall (18), and the elastic sealing material (16) is attached to the fitting projection (15). It is characterized by being pressed against the outer wall surface.
[0033]
According to this, by forming the elastic sealing material (16) itself as a part of the side wall (18) outside the coupling end face (11a) on which the fitting groove (14) is formed, both coupling end faces (16) are formed. The sealing effect between 11a and 12a) can be exhibited.
[0034]
As in the eleventh aspect, in the first aspect, a concave fitting groove (14) is formed on one of the two coupling end surfaces (11a, 12a), and the other of the two coupling end surfaces (11a, 12a). A fitting projection (15) having a convex shape is formed on the coupling end face (11a) on the side where the fitting groove (14) is formed, and an elastic sealing material (16) is covered with the fitting groove (14). The sheet-shaped elastic sealing material (16) is sandwiched over the entire fitting portion between the fitting protrusion (15) and the fitting groove (14). You may.
[0035]
This also ensures that the sealing effect between the two coupling end surfaces (11a, 12a) is achieved.
[0036]
As will be understood from the description of the above-mentioned claims, in the present invention, the term "coupling end face" means only the opposed flat end faces of the first and second split case bodies (11, 12). Instead, the term includes the fitting groove (14), the fitting protrusion (15), and their side walls (17 to 20).
[0037]
In addition, the code | symbol in the parenthesis of each said means shows the correspondence with the concrete means described in embodiment mentioned later.
[0038]
BEST MODE FOR CARRYING OUT THE INVENTION
(1st Embodiment)
This embodiment is an example applied to a case connection structure of an indoor unit of a vehicle air conditioner. FIG. 1 is a perspective view of an indoor unit of a vehicle air conditioner, and a case 10 of the indoor unit includes a heat exchanger such as a cooling evaporator and a heating heater core, or an air conditioner such as a ventilation control door. And constitutes a passage for air blown into the vehicle interior.
[0039]
In this example, the case 10 is constituted by two divided case bodies 11 and 12 which are vertically divided. After the upper and lower divided case bodies 11 and 12 are fitted and assembled, coupling means such as screws and metal spring clicks are used. And the upper and lower divided case bodies 11 and 12 are integrally connected. The split case bodies 11 and 12 are formed of a resin material having a certain degree of elasticity and excellent strength, such as polypropylene.
[0040]
In this example, the opening 13 is formed at the right end of the case 10 and an opening (not shown) is also formed at the left end of the case 10. Therefore, the upper and lower divided case bodies 11 and 12 are each formed in a substantially U-shaped cross section, and the end face portions of the U-shaped cross section are mutually coupled end faces 11a and 12a.
[0041]
2 (a), 2 (b) and 2 (c) are sectional views taken along the line AA of FIG. 1, and FIG. 2 (a) shows a state in the middle of the fitting and assembling process of the upper and lower divided case bodies 11 and 12. On the other hand, FIGS. 2B and 2C show a completed state of the fitting and assembling process of the upper and lower divided case bodies 11 and 12.
[0042]
Of the coupling end surfaces 11a, 12a of the upper and lower split case bodies 11, 12, a concave fitting groove 14 is formed in the upper coupling end surface 11a, and a convex fitting protrusion 15 is formed in the lower coupling end surface 12a. Is formed. The dimensions of the fitting groove 14 and the fitting protrusion 15 are set so that the fitting protrusion 15 can be fitted in the fitting groove 14. The width on the side is tapered to facilitate fitting of the fitting projection 15 into the fitting groove 14.
[0043]
Further, since the fitting groove 14 and the fitting protrusion 15 are formed to extend in a band shape over the entire length of the coupling end surfaces 11a, 12a, an uneven fitting portion can be formed over the entire length of the coupling end surfaces 11a, 12a.
[0044]
Further, an elastic sealing material 16 is integrally formed on the top of the fitting projection 15. Here, as shown in FIG. 2 (a), the elastic sealing material 16 has a triangular cross section with a sharp top in a free state before being pressed against the bottom of the fitting groove 14. And it is formed so as to extend in a belt shape over the entire length of the fitting projection 15, that is, the entire length of the coupling end surfaces 11a and 12a.
[0045]
As a specific material of the elastic sealing material 16, a thermoplastic elastomer which exhibits rubber elasticity at normal temperature, exhibits fluidity when heated to a predetermined temperature or higher, and becomes moldable is used. More specifically, a mixture of polypropylene and ethylene-propylene-diene copolymer rubber (EPDM) as a material exhibiting rubber elasticity is used.
[0046]
By using this thermoplastic elastomer, the elastic sealing material 16 can be integrally formed on the top of the fitting projection 15 of the lower split case body 12 by a known two-color molding (injection molding) technique. In addition, as a specific material of the elastic sealing material 16, a polypropylene-based thermoplastic elastomer of the same type as the material (polypropylene) of the lower divided case body 12 is used, so that the elastic sealing material 16 and the lower divided case body 12 are separated. Good joining can be achieved.
[0047]
FIG. 2A shows a process of fitting the fitting projection 15 of the lower divided case body 12 into the fitting groove 14 of the upper divided case body 11 and assembling the upper and lower divided case bodies 11 and 12. 2A, when the fitting between the fitting projection 15 and the fitting groove 14 is further advanced from the state shown in FIG. 2A, the connecting end surfaces 11a and 12a of the two split case bodies 11 and 12 are connected to each other. At this time, the progress of the fitting between the fitting projection 15 and the fitting groove 14 ends.
[0048]
In this state, the elastic sealing material 16 at the top of the fitting projection 15 is pressed against the bottom of the fitting groove 14 and is elastically compressed and deformed. As a result, the elastic sealing material 16 elastically presses against the bottom of the fitting groove 14 to seal the fitting portion between the fitting projection 15 and the fitting groove 14.
[0049]
Here, in the state in which the fitting protrusion 15 and the fitting groove 14 shown in FIGS. 2B and 2C have been fitted, the distance between the top of the fitting protrusion 15 and the bottom of the fitting groove 14 is Although it fluctuates due to sink, deformation and the like of the resin material in the cooling and solidifying process after case molding, since the elastic seal member 16 is an elastic body, an elastic deformation amount exceeding the fluctuation width (dimension variation) of the interval can be easily secured. .
[0050]
Therefore, by setting the height of the elastic seal member 16 in advance to a size exceeding the expected maximum value of the interval, the fluctuation width of the interval is absorbed by the elastic deformation of the elastic seal member 16 and the fitting protrusion is formed. The fitting section between the fitting groove 15 and the fitting groove 14 can be reliably sealed.
[0051]
Since the connecting end surfaces 11a and 12a of the two split case bodies 11 and 12 have a long shape extending in a belt shape as shown in FIG. 1, the two connecting end surfaces 11a and 12a are in good contact with each other as shown in FIG. As shown in FIG. 2 (c), it often occurs that a portion where a gap a is generated between the coupling end surface 11a and the coupling end surface 12a due to sinking, deformation or the like of the resin material.
[0052]
According to the present embodiment, even if a gap a is generated between the two coupling end surfaces 11a and 12a as shown in FIG. 2C, air leakage or the like from the gap a is reliably performed by the sealing action of the elastic sealing material 16. Can be prevented.
[0053]
Therefore, complicated mold adjustment work for constantly adjusting the injection mold so as to minimize sink marks and deformation of the resin material can be greatly simplified.
[0054]
(2nd Embodiment)
In the above-described first embodiment, the elastic sealing material 16 is integrally formed on the top of the fitting projection 15 of the lower split case body 11, but in the second embodiment, as shown in FIG. The upper split case body 12 is formed integrally with the bottom of the fitting groove 14. Even in this case, the same operation and effect as in the first embodiment can be exhibited.
[0055]
(Third embodiment)
In the above-described first and second embodiments, the elastic sealing material 16 is disposed at a position facing the top of the fitting protrusion 15 and the bottom of the fitting groove 14, but in the third embodiment, FIG. As shown in (a) and (b), the elastic sealing material 16 is formed into a sheet-like shape on the inner and outer side walls 17 and 18 of the upper coupling end face 11a where the fitting groove 14 is formed, of the two coupling end faces 11a and 12a. And are integrally molded.
[0056]
More specifically, in the example of FIG. 4A, the sheet-shaped elastic sealing material 16 is integrally formed on the side wall 17 inside the upper coupling end face 11a, and in the example of FIG. The sheet-shaped elastic sealing material 16 is integrally formed on the outer side wall 18 of the sheet. A thick solid line 16a indicates a joint between the elastic sealing material 16 and the side walls 17, 18. The sheet-like elastic sealing material 16 is also formed in a belt shape so as to extend over the entire length of the upper and lower coupling end surfaces 11a and 12a.
[0057]
In the example of FIG. 4A in the third embodiment, when the fitting projection 15 is fitted into the fitting groove 14 and the upper and lower divided case bodies 11 and 12 are fitted and assembled, the lower coupling end face is used. The elastic sealing material 16 is formed such that the lower end side (free end side) of the sheet-like elastic sealing material 16 is pressed inward of the case by the inner side wall 19 of the inner side 12a. And the lower end side of the elastic sealing material 16 is pressed against the surface of the side wall 19.
[0058]
In the example of FIG. 4B in the third embodiment as well, the lower end side (free end side) of the sheet-like elastic sealing material 16 is pressed toward the outside of the case by the outer side wall 20 of the lower coupling end surface 12a. Since the elastic sealing member 16 generates an elastic reaction force against the pressing force, the lower end side of the elastic sealing member 16 is pressed against the surface of the side wall 20.
[0059]
As described above, according to the third embodiment, the lower end side (free end side) of the sheet-like elastic sealing material 16 integrally formed on the inner and outer side walls 17 and 18 of the upper coupling end surface 11a where the fitting groove 14 is formed. Is elastically pressed against the surfaces of the inner and outer side walls 19 and 20 of the lower coupling end face 12a on which the fitting projection 15 is formed, thereby exerting a self-sealing effect.
[0060]
Therefore, even if a gap a as shown in FIG. 2C is generated between the two connection end surfaces 11a and 12a, it is possible to reliably prevent the problem of air leakage.
[0061]
In the third embodiment, in the example of FIG. 4A, the wind pressure of the air blown in the case 10 acts on the entire surface of the sheet-like elastic sealing material 16 so that the elastic sealing material 16 is 4B, the sealing performance can be further improved as compared with the example of FIG.
[0062]
(Fourth embodiment)
In the third embodiment, the elastic sealing material 16 is integrated with the inner and outer side walls 17 and 18 of the upper coupling end face 11a, in which the fitting groove 14 is formed, of the two coupling end faces 11a and 12a in a sheet shape. In the fourth embodiment, as shown in FIGS. 5 (a) and 5 (b), of the two connecting end surfaces 11a and 12a, the inner and outer surfaces of the lower connecting end surface 12a where the fitting projection 15 is formed are formed. The elastic sealing material 16 is integrally formed on the side walls 19 and 20 in a sheet shape.
[0063]
Even if the elastic sealing material 16 is integrally formed on the inner and outer side walls 19 and 20 of the lower coupling end surface 12a, the same operation and effect as in the third embodiment can be exerted. Also in the fourth embodiment, in the example of FIG. 5A, the upper end side (free end side) of the sheet-like elastic seal member 16 is moved inside the upper joint end surface 11 a by the wind pressure of the air blown in the case 10. 5B, the sealing performance can be further improved as compared with the example of FIG. 5B.
[0064]
(Fifth embodiment)
In the third and fourth embodiments, the sheet-like elastic sealing material 16 is integrally formed on the inner and outer side walls 17 and 18 of the upper coupling end face 11a or the inner and outer side walls 19 and 20 of the lower coupling end face 12a. However, in the fifth embodiment, as shown in FIGS. 6A and 6B, inner and outer side walls 17, 18 of the upper coupling end face 11 a in which the fitting groove 14 is formed, of both coupling end faces 11 a, 12 a. The elastic sealing material 16 is integrally formed in a sheet-like shape as a part thereof.
[0065]
Specifically, in the example of FIG. 6A, the height of the inner side wall 17 of the inner and outer side walls 17, 18 of the upper coupling end surface 11 a where the fitting groove 14 is formed is set higher than the outer side wall 18. Also, a sheet-shaped elastic sealing material 16 having a height corresponding to the predetermined amount is integrally formed on the tip of the inner side wall 17. Thereby, a part of the inner side wall 17 can be constituted by the sheet-like elastic sealing material 16 itself.
[0066]
On the other hand, in the example of FIG. 6B, of the inner and outer side walls 17, 18 of the upper coupling end surface 11 a, a part of the distal end side of the outer side wall 18 is formed of the sheet-like elastic sealing material 16 itself. ing.
[0067]
According to the fifth embodiment, when the fitting projection 15 of the lower coupling end face 12a is fitted into the fitting groove 14 of the upper coupling end face 11a, in the example of FIG. The sealing material 16 is pressed toward the inside of the case by the fitting projection 15. In the example of FIG. 6B, the sheet-like elastic sealing material 16 is pressed by the fitting projection 15 toward the outside of the case.
[0068]
As a result, an elastic reaction force is generated in the elastic sealing material 16, and the elastic sealing material 16 is pressed against the inner wall surface or the outer wall surface of the fitting projection 15 to exert a self-sealing effect. Further, in the example of FIG. 6A, the lower end side (free end side) of the sheet-like elastic sealing member 16 can be pressed more strongly against the inner wall surface of the fitting projection 15 by the wind pressure in the case 10. The sealing performance can be further improved as compared with the example of (b).
[0069]
3 to 6 show a state in which the upper and lower divided case bodies 11 and 12 are being assembled, all of which correspond to FIG.
[0070]
(Sixth embodiment)
In the first to fifth embodiments, the fitting groove 14 is formed on the coupling end face 11a of the upper divided case body 11, and the fitting projection 15 is formed on the coupling end face 12a of the lower divided case body 12. However, in the sixth embodiment, on the contrary, as shown in FIG. 7, a fitting projection 15 is formed on the coupling end face 11a of the upper divided case body 11, and the coupling end face of the lower divided case body 12 is formed. A fitting groove 14 is formed in 12a. In the sixth embodiment, the sheet-like elastic sealing material 16 is integrally formed so that one end of the sheet-like elastic sealing material 16 is joined to the outer side wall 20 of the coupling end surface 12a of the lower divided case body 12. ing.
[0071]
Here, the length of the sheet-like elastic sealing material 16 (the length in the direction perpendicular to the paper surface of FIG. 7) is the same as the overall length of the coupling end surfaces 11a and 12a, as in the above-described embodiments. The width dimension (length in the left-right direction of FIG. 7) of the material 16 is equal to or greater than the total creepage length of the inner wall surface of the fitting groove portion 14 and the flat surface of the coupling end surface 12a as understood from FIG. It has been set. Here, the total creeping length refers to a length along the surface of the substantially U-shaped cross-sectional shape formed by the inner wall surface of the fitting groove portion 14 and the flat surface of the coupling end surface 12a.
[0072]
The method of assembling the upper and lower split case bodies 11 and 12 according to the sixth embodiment will be described. First, a sheet-like elastic sealing material 16 integrally formed on the outer side wall 20 of the coupling end face 12a of the lower split case body 12 is shown. As shown in FIG. 7 (a), it is put over the coupling end face 12a so as to cover the fitting groove 14.
[0073]
Next, as shown by an arrow in FIG. 7A, the fitting projection 15 of the upper divided case body 11 is directed from above the sheet-like elastic sealing material 16 to the fitting groove 14 of the lower divided case body 12. And push it. Thereby, the fitting projection 15 can be inserted into the fitting groove 14 together with the sheet-like elastic sealing material 16 as shown in FIG. 7B.
[0074]
Therefore, when the insertion of the fitting protrusion 15 into the fitting groove 14 is completed, the entire fitting portion between the fitting protrusion 15 and the fitting groove 14 and the flat surfaces of the coupling end surfaces 11a and 12a are mutually formed. The sheet-like elastic sealing material 16 can be elastically compressed and deformed by sandwiching the sheet-like elastic sealing material 16 therebetween. Therefore, the joint between the upper and lower divided case bodies 11 and 12 can be reliably sealed.
[0075]
In FIG. 7, the sheet-like elastic sealing material 16 is integrally formed so that one end of the sheet-like elastic sealing material 16 is joined to the side wall 20 outside the coupling end face 12a of the lower divided case body 12. Alternatively, the sheet-like elastic sealing member 16 may be integrally formed so that one end of the sheet-like elastic sealing member 16 is joined to the side wall 19 inside the coupling end surface 12a of the lower divided case body 12.
[0076]
(Seventh embodiment)
In the sixth embodiment, the sheet-like elastic sealing material 16 is joined so that only one end of the sheet-like elastic sealing material 16 is joined to the outer side wall 20 or the inner side wall 19 of the coupling end face 12a of the lower divided case body 12. However, in the seventh embodiment, as shown in FIG. 8A, one end of the sheet-like elastic sealing material 16 is attached to the outer side wall 20 of the coupling end face 12a of the lower divided case body 12. The sheet-shaped elastic sealing material 16 is joined to the lower divided case body 12 so that the other end of the sheet-shaped elastic sealing material 16 is joined to the side wall 19 inside the coupling end face 12a of the lower divided case body 12. It is integrally molded.
[0077]
Here, the width dimension of the sheet-like elastic sealing material 16 is set to be equal to or greater than the total creepage length of the inner wall surface of the fitting groove 14 and the flat surface of the coupling end surface 12a as in the sixth embodiment. As shown in FIG. 8A, the shape of the sealing material 16 at the time of molding has a shape projecting in a mountain shape above the coupling end face 12a of the lower divided case body 12.
[0078]
FIG. 8B shows a process of inserting the fitting projection 15 of the upper split case body 11 into the fitting groove 14 together with the sheet-like elastic sealing material 16 in the seventh embodiment. Also in the seventh embodiment, the sheet-like elastic sealing material 16 is sandwiched between the entire fitting portion between the fitting protrusion 15 and the fitting groove portion 14 and the flat surfaces of the coupling end surfaces 11a and 12a, thereby forming the upper and lower portions. The joint between the divided case bodies 11 and 12 can be reliably sealed.
[0079]
In the seventh embodiment, the sheet-like elastic sealing material 16 is formed into a mountain shape so that both ends of the sheet-like elastic sealing material 16 are joined to the inner and outer side walls 19 and 20 of the coupling end surface 12a of the lower split case body 12. Since it is formed in a protruding shape, it is not possible to remove the die for forming the chevron-shaped protruding shape of the sheet-like elastic sealing material 16 by injection molding. Therefore, in the seventh embodiment, after the lower split case body 12 is formed by injection molding, the portion of the sheet-like elastic sealing material 16 may be integrally formed with the lower split case body 12 by blow molding.
[0080]
(Other embodiments)
In the first embodiment described above, the connection structure of the divided case bodies 11 and 12 constituting the case 10 of the indoor unit of the air conditioner for a vehicle has been described. The present invention can be similarly applied to a structure in which a device is not housed only by forming a passage.
[Brief description of the drawings]
FIG. 1 is a perspective view of an indoor unit of a vehicle air conditioner according to a first embodiment of the present invention.
FIG. 2 is a sectional view taken along line AA of FIG.
FIG. 3 is a cross-sectional view of a main part of the second embodiment, which corresponds to a cross-sectional view taken along line AA of FIG. 1;
FIG. 4 is a sectional view of a main part of a third embodiment, which corresponds to a sectional view taken along line AA of FIG. 1;
FIG. 5 is a cross-sectional view of a main part of the fourth embodiment, which corresponds to a cross-sectional view taken along line AA of FIG. 1;
FIG. 6 is a cross-sectional view of a main part of the fifth embodiment, which corresponds to a cross-sectional view taken along line AA of FIG. 1;
FIG. 7 is a fragmentary cross-sectional view showing an assembling process according to a sixth embodiment;
FIG. 8 is a fragmentary cross-sectional view showing an assembling process according to a seventh embodiment;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Case, 11, 12 ... Divided case body, 11a, 12a ... Connection end surface, 14 ... Fitting groove part, 15 ... Fitting protrusion part, 16 ... Elastic sealing material.

Claims (11)

結合端面（１１ａ）を有する第１の分割ケース体（１１）と、
前記第１の分割ケース体（１１）の結合端面（１１ａ）に対応する結合端面（１２ａ）を有する第２の分割ケース体（１２）とを備え、
前記両結合端面（１１ａ、１２ａ）同士を互いに嵌合して前記第１、第２の分割ケース体（１１、１２）を一体に結合するケース結合構造において、
前記両結合端面（１１ａ、１２ａ）のいずれか一方側に弾性シール材（１６）を一体成形し、
前記弾性シール材（１６）を前記両結合端面（１１ａ、１２ａ）のうち他方側に圧接させて、前記両結合端面（１１ａ、１２ａ）間をシールすることを特徴とするケース結合構造。A first split case body (11) having a coupling end face (11a);
A second split case body (12) having a connection end face (12a) corresponding to the connection end face (11a) of the first split case body (11);
In the case coupling structure in which the two coupling end faces (11a, 12a) are fitted to each other and the first and second divided case bodies (11, 12) are integrally coupled,
An elastic sealing material (16) is integrally formed on one of the two connection end surfaces (11a, 12a),
A case coupling structure, wherein the elastic sealing member (16) is pressed against the other of the two coupling end surfaces (11a, 12a) to seal between the two coupling end surfaces (11a, 12a). 前記両結合端面（１１ａ、１２ａ）の一方側に凹形状の嵌合溝部（１４）を形成し、前記両結合端面（１１ａ、１２ａ）の他方側に凸形状の嵌合突起部（１５）を形成し、
前記嵌合突起部（１５）の頂部および前記嵌合溝部（１４）の底部のいずれか一方に前記弾性シール材（１６）を一体成形し、
前記嵌合突起部（１５）を前記嵌合溝部（１４）内に嵌合することにより、前記嵌合突起部（１５）の頂部と前記嵌合溝部（１４）の底部との間で前記弾性シール材（１６）を弾性的に圧縮変形させることを特徴とする請求項１に記載のケース結合構造。A concave fitting groove (14) is formed on one side of the two coupling end faces (11a, 12a), and a convex fitting projection (15) is formed on the other side of the two coupling end faces (11a, 12a). Forming
The elastic sealing material (16) is integrally formed on one of the top of the fitting projection (15) and the bottom of the fitting groove (14);
By fitting the fitting projection (15) into the fitting groove (14), the elasticity between the top of the fitting projection (15) and the bottom of the fitting groove (14) is increased. 2. The case connecting structure according to claim 1, wherein the sealing member is elastically compressed and deformed. 前記両結合端面（１１ａ、１２ａ）の一方側に凹形状の嵌合溝部（１４）を形成し、前記両結合端面（１１ａ、１２ａ）の他方側に凸形状の嵌合突起部（１５）を形成し、
前記両結合端面（１１ａ、１２ａ）のうち、前記嵌合溝部（１４）が形成される側の結合端面（１１ａ）の側壁（１７、１８）表面に前記弾性シール材（１６）を一体成形し、
前記嵌合突起部（１５）を前記嵌合溝部（１４）内に嵌合することにより、前記弾性シール材（１６）を前記嵌合突起部（１５）が形成される側の結合端面（１２ａ）の側壁（１９、２０）表面に圧接させることを特徴とする請求項１に記載のケース結合構造。A concave fitting groove (14) is formed on one side of the two coupling end faces (11a, 12a), and a convex fitting projection (15) is formed on the other side of the two coupling end faces (11a, 12a). Forming
The elastic sealing material (16) is integrally formed on the surface of the side wall (17, 18) of the coupling end face (11a) on the side where the fitting groove (14) is formed, of the two coupling end faces (11a, 12a). ,
By fitting the fitting protrusion (15) into the fitting groove (14), the elastic sealing material (16) is connected to the coupling end surface (12a) on the side where the fitting protrusion (15) is formed. 2. The case coupling structure according to claim 1, wherein the case is pressed against the surface of the side wall (19, 20). 前記弾性シール材（１６）を、前記嵌合溝部（１４）が形成される側の結合端面（１１ａ）の内外の両側壁（１７、１８）のうち、内側の側壁（１７）表面に一体成形し、
前記弾性シール材（１６）を、前記嵌合突起部（１５）が形成される側の結合端面（１２ａ）の内外の両側壁（１９、２０）のうち、内側の側壁（１９）表面に圧接させることを特徴とする請求項３に記載のケース結合構造。The elastic sealing material (16) is integrally formed on the surface of the inner side wall (17) of the inner and outer side walls (17, 18) of the coupling end surface (11a) on the side where the fitting groove (14) is formed. And
The elastic sealing material (16) is pressed against the surface of the inner side wall (19) of the inner and outer side walls (19, 20) of the coupling end face (12a) on the side where the fitting protrusion (15) is formed. The case coupling structure according to claim 3, wherein 前記弾性シール材（１６）を、前記嵌合溝部（１４）が形成される側の結合端面（１１ａ）の内外の両側壁（１７、１８）のうち、外側の側壁（１８）表面に一体成形し、
前記弾性シール材（１６）を、前記嵌合突起部（１５）が形成される側の結合端面（１２ａ）の内外の両側壁（１９、２０）のうち、外側の側壁（２０）表面に圧接させることを特徴とする請求項３に記載のケース結合構造。The elastic sealing material (16) is integrally formed on the surface of the outer side wall (18) of the inner and outer side walls (17, 18) of the coupling end surface (11a) on the side where the fitting groove (14) is formed. And
The elastic sealing material (16) is pressed against the surface of the outer side wall (20) of the inner and outer side walls (19, 20) of the coupling end surface (12a) on the side where the fitting protrusion (15) is formed. The case coupling structure according to claim 3, wherein 前記両結合端面（１１ａ、１２ａ）の一方に凹形状の嵌合溝部（１４）を形成し、前記両結合端面（１１ａ、１２ａ）の他方に凸形状の嵌合突起部（１５）を形成し、
前記両結合端面（１１ａ、１２ａ）のうち、前記嵌合突起部（１５）が形成される側の結合端面（１２ａ）の側壁（１９、２０）表面に前記弾性シール材（１６）を一体成形し、
前記嵌合突起部（１５）を前記嵌合溝部（１４）内に嵌合することにより、前記弾性シール材（１６）を前記嵌合溝部（１４）が形成される側の結合端面（１１ａ）の側壁（１７、１８）表面に圧接させることを特徴とする請求項１に記載のケース結合構造。A concave fitting groove (14) is formed on one of the two coupling end faces (11a, 12a), and a convex fitting projection (15) is formed on the other of the two coupling end faces (11a, 12a). ,
The elastic sealing material (16) is integrally formed on the surface of the side wall (19, 20) of the coupling end surface (12a) on the side where the fitting protrusion (15) is formed, of the two coupling end surfaces (11a, 12a). And
By fitting the fitting protrusion (15) into the fitting groove (14), the elastic sealing material (16) is connected to the coupling end surface (11a) on the side where the fitting groove (14) is formed. 2. The case coupling structure according to claim 1, wherein the case is pressed against the surface of the side wall (17, 18). 前記弾性シール材（１６）を、前記嵌合突起部（１５）が形成される側の結合端面（１２ａ）の内外の両側壁（１９、２０）のうち、内側の側壁（１９）表面に一体成形し、
前記弾性シール材（１６）を、前記嵌合溝部（１４）が形成される側の結合端面（１１ａ）の内外の両側壁（１７、１８）のうち、内側の側壁（１７）表面に圧接させることを特徴とする請求項６に記載のケース結合構造。The elastic sealing material (16) is integrated with the inner side wall (19) surface of the inner and outer side walls (19, 20) of the coupling end surface (12a) on the side where the fitting protrusion (15) is formed. Molded,
The elastic sealing material (16) is pressed against the surface of the inner side wall (17) of the inner and outer side walls (17, 18) of the coupling end face (11a) on the side where the fitting groove (14) is formed. The case coupling structure according to claim 6, wherein: 前記弾性シール材（１６）を、前記嵌合突起部（１５）が形成される側の結合端面（１２ａ）の内外の両側壁（１９、２０）のうち、外側の側壁（２０）表面に一体成形し、
前記弾性シール材（１６）を、前記嵌合溝部（１４）が形成される側の結合端面（１１ａ）の内外の両側壁（１７、１８）のうち、外側の側壁（１８）表面に圧接させることを特徴とする請求項６に記載のケース結合構造。The elastic sealing material (16) is integrated with the surface of the outer side wall (20) of the inner and outer side walls (19, 20) of the coupling end face (12a) on the side where the fitting protrusion (15) is formed. Molded,
The elastic sealing material (16) is pressed against the surface of the outer side wall (18) of the inner and outer side walls (17, 18) of the coupling end face (11a) on the side where the fitting groove (14) is formed. The case coupling structure according to claim 6, wherein: 前記両結合端面（１１ａ、１２ａ）の一方に凹形状の嵌合溝部（１４）を形成し、前記両結合端面（１１ａ、１２ａ）の他方に凸形状の嵌合突起部（１５）を形成し、
前記嵌合溝部（１４）が形成される側の結合端面（１１ａ）の内外の両側壁（１７、１８）のうち、内側の側壁（１７）を外側の側壁（１８）より高さの低い形状とし、前記内側の側壁（１７）の先端部に前記弾性シール材（１６）を一体成形し、
前記弾性シール材（１６）を前記嵌合突起部（１５）の内側壁面に圧接させることを特徴とする請求項１に記載のケース結合構造。A concave fitting groove (14) is formed on one of the two coupling end faces (11a, 12a), and a convex fitting projection (15) is formed on the other of the two coupling end faces (11a, 12a). ,
The inner side wall (17) of the inner and outer side walls (17, 18) of the coupling end surface (11a) on the side where the fitting groove (14) is formed has a shape in which the height is lower than the outer side wall (18). And the elastic sealing material (16) is integrally formed on the tip of the inner side wall (17).
The case coupling structure according to claim 1, wherein the elastic sealing material (16) is pressed against an inner wall surface of the fitting protrusion (15). 前記両結合端面（１１ａ、１２ａ）の一方に凹形状の嵌合溝部（１４）を形成し、前記両結合端面（１１ａ、１２ａ）の他方に凸形状の嵌合突起部（１５）を形成し、
前記嵌合溝部（１４）が形成される側の結合端面（１１ａ）の内外の両側壁（１７、１８）のうち、外側の側壁（１８）を内側の側壁（１７）より高さの低い形状とし、前記外側の側壁（１８）の先端部に前記弾性シール材（１６）を一体成形し、
前記弾性シール材（１６）を前記嵌合突起部（１５）の外側壁面に圧接させることを特徴とする請求項１に記載のケース結合構造。A concave fitting groove (14) is formed on one of the two coupling end faces (11a, 12a), and a convex fitting projection (15) is formed on the other of the two coupling end faces (11a, 12a). ,
Among the inner and outer side walls (17, 18) of the coupling end face (11a) on the side where the fitting groove (14) is formed, the outer side wall (18) is lower in height than the inner side wall (17). And the elastic sealing material (16) is integrally formed on the tip of the outer side wall (18).
The case coupling structure according to claim 1, wherein the elastic sealing material (16) is pressed against an outer wall surface of the fitting projection (15). 前記両結合端面（１１ａ、１２ａ）の一方に凹形状の嵌合溝部（１４）を形成し、前記両結合端面（１１ａ、１２ａ）の他方に凸形状の嵌合突起部（１５）を形成し、
前記嵌合溝部（１４）が形成される側の結合端面（１１ａ）に、前記弾性シール材（１６）を前記嵌合溝部（１４）を覆うことが可能な幅寸法を有するシート状に一体成形し、
前記嵌合突起部（１５）と前記嵌合溝部（１４）との間の嵌合部全体にわたって前記シート状の弾性シール材（１６）を挟み込むようにしたことを特徴とする請求項１に記載のケース結合構造。A concave fitting groove (14) is formed on one of the two coupling end faces (11a, 12a), and a convex fitting projection (15) is formed on the other of the two coupling end faces (11a, 12a). ,
The elastic sealing material (16) is integrally formed on the coupling end surface (11a) on the side where the fitting groove (14) is formed into a sheet shape having a width dimension capable of covering the fitting groove (14). And
The said sheet-shaped elastic sealing material (16) was pinched so that the whole fitting part between the said fitting protrusion part (15) and the said fitting groove part (14) may be pinched. Case coupling structure.
JP2003131901A 2003-05-09 2003-05-09 Case connection structure Expired - Fee Related JP4075681B2 (en)

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JP2008290694A (en) * 2007-05-23 2008-12-04 Kia Motors Corp Roof air-conditioner of bus vehicle
JP2010007739A (en) * 2008-06-25 2010-01-14 Toshiba Home Technology Corp Fuel cell device
DE102009037304A1 (en) * 2009-08-14 2011-02-17 Behr Gmbh & Co. Kg Automotive air conditioning system
JP2013103597A (en) * 2011-11-14 2013-05-30 Japan Climate Systems Corp Vehicle air conditioner
DE102011089092A1 (en) * 2011-12-19 2013-06-20 Behr Gmbh & Co. Kg Housing in particular for a motor vehicle air conditioning system
KR101430001B1 (en) 2008-02-19 2014-08-14 한라비스테온공조 주식회사 Air conditioning case of car air conditioner
JP2015067260A (en) * 2013-10-01 2015-04-13 株式会社デンソー Vehicular air conditioner
JP2016124315A (en) * 2014-12-26 2016-07-11 株式会社豊田自動織機 Ventilation device
CN111629917A (en) * 2018-02-07 2020-09-04 日本空调系统股份有限公司 Air supply device for vehicle air conditioner

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008290694A (en) * 2007-05-23 2008-12-04 Kia Motors Corp Roof air-conditioner of bus vehicle
KR101430001B1 (en) 2008-02-19 2014-08-14 한라비스테온공조 주식회사 Air conditioning case of car air conditioner
JP2010007739A (en) * 2008-06-25 2010-01-14 Toshiba Home Technology Corp Fuel cell device
DE102009037304A1 (en) * 2009-08-14 2011-02-17 Behr Gmbh & Co. Kg Automotive air conditioning system
JP2013103597A (en) * 2011-11-14 2013-05-30 Japan Climate Systems Corp Vehicle air conditioner
DE102011089092A1 (en) * 2011-12-19 2013-06-20 Behr Gmbh & Co. Kg Housing in particular for a motor vehicle air conditioning system
EP2607118A1 (en) * 2011-12-19 2013-06-26 Behr GmbH & Co. KG Housing, in particular for a motor vehicle air conditioning device
US9809084B2 (en) 2011-12-19 2017-11-07 Mahle International Gmbh Housing particularly for a motor vehicle HVAC system
JP2015067260A (en) * 2013-10-01 2015-04-13 株式会社デンソー Vehicular air conditioner
JP2016124315A (en) * 2014-12-26 2016-07-11 株式会社豊田自動織機 Ventilation device
CN111629917A (en) * 2018-02-07 2020-09-04 日本空调系统股份有限公司 Air supply device for vehicle air conditioner
EP3718798A4 (en) * 2018-02-07 2021-03-10 Japan Climate Systems Corporation Air blowing device for vehicle air-conditioning

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