JP3817598B2 - Intake manifold - Google Patents

Intake manifold Download PDF

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Publication number
JP3817598B2
JP3817598B2 JP2001168562A JP2001168562A JP3817598B2 JP 3817598 B2 JP3817598 B2 JP 3817598B2 JP 2001168562 A JP2001168562 A JP 2001168562A JP 2001168562 A JP2001168562 A JP 2001168562A JP 3817598 B2 JP3817598 B2 JP 3817598B2
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Prior art keywords
intake
intake pipe
intake manifold
halves
pipes
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JP2001168562A
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Japanese (ja)
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JP2002364470A (en
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禧好 穐谷
格 野口
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Honda Motor Co Ltd
Keihin Corp
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Honda Motor Co Ltd
Keihin Corp
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Priority to JP2001168562A priority Critical patent/JP3817598B2/en
Priority to EP20020012333 priority patent/EP1264982B1/en
Priority to DE2002601466 priority patent/DE60201466T2/en
Publication of JP2002364470A publication Critical patent/JP2002364470A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1034—Manufacturing and assembling intake systems
    • F02M35/10347—Moulding, casting or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10072—Intake runners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10111—Substantially V-, C- or U-shaped ducts in direction of the flow path
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10301—Flexible, resilient, pivotally or movable parts; Membranes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10314—Materials for intake systems
    • F02M35/10321—Plastics; Composites; Rubbers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1034—Manufacturing and assembling intake systems
    • F02M35/10354—Joining multiple sections together
    • F02M35/1036—Joining multiple sections together by welding, bonding or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/104—Intake manifolds
    • F02M35/112—Intake manifolds for engines with cylinders all in one line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/08—Thermoplastics

Description

【０００１】
【発明の属する技術分野】
本発明は、合成樹脂から成る複数の接合部材の振動溶着により構成される吸気マニホールドに関する。
【０００２】
【従来の技術】
従来、かかる吸気マニホールドは、たとえば実開平６−７３３６８号公報等で既に知られており、このものでは、複数の吸気管の一部をそれぞれ構成する複数の第１吸気管半部がその全長にわたって一体に連なって成る第１接合部材と、各吸気管の残部をそれぞれ構成する複数の第２吸気管半部がその全長にわたって一体に連なって成る第２接合部材との振動溶着により吸気マニホールドが構成されている。
【０００３】
【発明が解決しようとする課題】
しかるに上記従来のものでは、各吸気管相互間がその全長にわたって一体に連結された構造であり、吸気マニホールドを形成するのに必要とされる合成樹脂の量が比較的多くなるだけでなく、各吸気管相互の距離が比較的短い場合にしか適用できないのでエンジンレイアウトに制約が生じることになる。
【０００４】
そのような欠点を解消するために、複数の吸気管の一部をそれぞれ構成するとともに相互に間隔をあけるようにした吸気管半部の少なくとも一端が共通に連結されて成る合成樹脂製の第１接合部材と、各吸気管の残部をそれぞれ個別に構成して相互に独立した複数の第２接合部材とを振動溶着することが考えられる。しかるに、このような構成の吸気マニホールドでは、第２接合部材それぞれの管理が必要であって製造効率が効率的であるとは言い難く、しかも振動溶着時に第１接合部材に対して第２接合部材がずれて結合される可能性もある。
【０００５】
本発明は、かかる事情に鑑みてなされたものであり、合成樹脂の使用量を抑えつつエンジンレイアウトの自由度を向上することができ、精度良くかつ効率的に製造可能とした吸気マニホールドを提供することを目的とする。
【０００６】
【課題を解決するための手段】
上記目的を達成するために、請求項１記載の発明は、合成樹脂から成る複数の接合部材の振動溶着により構成される吸気マニホールドにおいて、複数の吸気管の一部をそれぞれ構成するとともに相互間に空隙をあけて並列配置される互いに独立した複数の第１吸気管半部の両端の少なくとも一方が相互に連結されて成る第１接合部材と、各吸気管の残部をそれぞれ構成する複数の第２吸気管半部が前記各吸気管の長手方向中間部に位置する架橋部で相互に連結されて成る第２接合部材とが振動溶着されて成ることを特徴とする。
【０００７】
このような構成によれば、吸気マニホールドが備える複数の吸気管相互の間隔を比較的広く設定してエンジンレイアウトの制約を緩和することが可能であり、また各吸気管相互は、それらの吸気管の両端の少なくとも一方および吸気管の長手方向中間部の架橋部で連結されるだけであり、各吸気管相互間がその全長にわたって一体に連結された構造の吸気マニホールドに比べると使用される合成樹脂の量を抑えることができる。しかも複数の第１吸気管半部の相対位置を一定に定めて形成される第１接合部材と、第１吸気管半部とともに吸気管をそれぞれ構成する複数の第２吸気管半部の相対位置を一定に定めて形成される第２接合部材とが振動溶着されるので、吸気マニホールドを精度よく、かつ効率的に製造することができる。
【０００８】
また請求項２記載の発明は、上記請求項１記載の発明の構成に加えて、前記架橋部に、隣接部位よりも剛性を弱めた弱剛性部が設けられることを特徴とし、かかる構成によれば、第１および第２接合部材の振動溶着時に、第２接合部材側での反りや歪みを第１接合部材との接触面で振動溶着金型のバックアップ部材により矯正する際に、弱剛性部によって吸収させることにより第２接合部材の全体形状を矯正することができ、振動溶着後の合わせ面でのずれが生じることがないようにして溶着品質を向上することができる。
【０００９】
また請求項３記載の発明は、上記請求項１又は２記載の発明の構成に加えて、前記架橋部の吸気管長手方向の幅は、前記第２吸気管半部の吸気管長手方向の全長よりも小さいことを特徴とする。
【００１０】
【発明の実施の形態】
以下、本発明の実施の形態を、添付の図面に示した本発明の一実施例に基づいて説明する。
【００１１】
図１〜図４は本発明の一実施例を示すものであり、図１はサージタンクおよび吸気マニホールドの斜視図、図２は第１接合部材の斜視図、図３は第２接合部材の斜視図、図４は図１の４−４線断面図である。
【００１２】
先ず図１において、たとえば４気筒のエンジン（図示せず）に接続される吸気マニホールドＭは、相互に並列して配置される複数たとえば４本の吸気管５，５…を備えるものであり、各吸気管５，５…の一端はサージタンク６に共通に接続され、各吸気管５，５…の他端には前記エンジンに結合するためのエンジン取付け用フランジ９が共通にかつ一体に連設される。而して各吸気管５，５…は、サージタンク６からエンジン取付け用フランジ９に至るまでの間にたとえば略１８０度反転するような形状を有して並列配置される
サージタンク６は、上方に開放した合成樹脂製の第１タンク半体７の開口端部と、第１タンク半体７側に開放した合成樹脂製の第２タンク半体８の開口端部とが全周にわたって振動溶着されることで構成されるものであり、前記吸気マニホールドＭが備える各吸気管５，５…の一端は第１タンク半体７の一側面に共通にかつ一体に連設される。また各吸気管５，５…の配列方向に沿う一端側で第１タンク半体７には、図示しないスロットル弁で流量を制御された空気をサージタンク６内に導く導管１０が連設される。
【００１３】
図２〜図４を併せて参照して、吸気マニホールドＭは、それぞれ合成樹脂により形成される第１および第２接合部材１１，１２を振動溶着することで構成される。
【００１４】
第１接合部材１１は、各吸気管５，５…の一部である主要部をそれぞれ構成する複数たとえば４つの第１吸気管半部１３，１３…の両端の少なくとも一方（この実施例では両方）が共通に連結されて成るものであり、第１吸気管半部１３，１３…と、それらの第１吸気管半部１３，１３…の一端に共通にかつ一体に連設される第１タンク半体７と、第１吸気管半部１３，１３…の他端に共通にかつ一体に連設されるエンジン取付け用フランジ９とを備える。
【００１５】
第１吸気管半部１３，１３…は、その彎曲反転部の外周側に開口部１６，１６…を有するように形成されており、開口部１６，１６…の周縁には接合フランジ１７，１７…が外側方に張出すようにして一体に形成される。
【００１６】
第２接合部材１２は、各吸気管５，５…の残部をそれぞれ構成する複数たとえば４つの第２吸気管半部１４，１４…が前記各吸気管５，５…の長手方向中間部に位置する３つの架橋部１５…で相互に連結されて成るものである。図１，３に示されるように、前記架橋部１５の吸気管長手方向の幅は、第２吸気管半部１４の吸気管長手方向の全長よりも小さい。
【００１７】
第２吸気管半部１４，１４…は、第１吸気管半部１３，１３…の開口部１６，１６…を塞ぐように形成されるものであり、第２吸気管半部１４，１４…の外周には、前記第１吸気管半部１３，１３…の接合フランジ１７，１７…に対応した接合フランジ１８，１８…がそれぞれ一体に形成される。
【００１８】
而して第１および第２接合部材１１，１２を振動溶着して吸気マニホールドＭを構成する際には、相互に対応した接合フランジ１７，１７…；１８，１８…同士が振動溶着されることになる。
【００１９】
しかも架橋部１５…は、各吸気管５，５…の長手方向中間部である彎曲反転部に配置されるようにして第２吸気管半部１４，１４…を相互に連結するものであり、各吸気管５，５…の配列方向に沿う各架橋部１５…の略中央には、外方に凸に彎曲した形状を有する弱剛性部１５ａ…が、その厚みを弱剛性部１５ａ…の両側よりも薄くすることで隣接部位よりも剛性を弱めるようにして設けられる。
【００２０】
次にこの実施例の作用について説明すると、複数たとえば４本の吸気管５，５…の一部である主要部をそれぞれ構成するとともに相互間に空隙をあけて並列配置される互いに独立した複数たとえば４つの第１吸気管半部１３，１３…の両端の少なくとも一方（この実施例では両方）が相互に連結されて成る第１接合部材１１と、各吸気管５，５…の残部をそれぞれ構成する複数たとえば４つの第２吸気管半部１４，１４…が各吸気管５，５…の長手方向中間部に位置する架橋部１５…で相互に連結されて成る第２接合部材１２とが振動溶着されることで、吸気マニホールドＭが構成される。
【００２１】
このような吸気マニホールドＭでは、各吸気管５，５…相互の間隔を比較的広く設定することが可能であり、エンジンレイアウトの制約を緩和することができる。しかも各吸気管５，５…相互は、それらの吸気管５，５…の両端の少なくとも一方（この実施例では両方）および吸気管５，５…の長手方向中間部の架橋部１５…で連結されるだけである。したがって各吸気管５，５…相互間がその全長にわたって一体に連結された構造の従来の吸気マニホールドに比べると、吸気マニホールドＭを構成するために使用される合成樹脂量を抑えることができる。
【００２２】
しかも複数の第１吸気管半部１３，１３…の相対位置を一定に定めて形成される第１接合部材１１と、第１吸気管半部１３，１３…とともに吸気管５，５…をそれぞれ構成する複数の第２吸気管半部１４，１４…の相対位置を一定に定めて形成される第２接合部材１２とが振動溶着されるので、第１吸気管半部１３，１３…の個別管理および第２吸気管半部１４，１４…の個別管理が不要であり、吸気マニホールドＭを精度よく、かつ効率的に製造することができる。
【００２３】
また架橋部１５…に、隣接部位よりも剛性を弱めた弱剛性部１５ａ…が設けられている。したがって第２接合部材１２および第１接合部材１１の振動溶着時に、第２接合部材１２側での反りや歪みを第１接合部材１１との接触面で振動溶着金型のバックアップ部材により矯正する際に、弱剛性部１５ａ…によって吸収させることにより第２接合部材１２の全体形状を矯正することができ、振動溶着後の合わせ面でのずれが生じることがないようにして吸気マニホールドＭ製造時の溶着品質を向上することができる。
【００２４】
以上、本発明の実施例を説明したが、本発明は上記実施例に限定されるものではなく、特許請求の範囲に記載された本発明を逸脱することなく種々の設計変更を行うことが可能である。
【００２５】
【発明の効果】
以上のように本発明によれば、複数の吸気管の一部をそれぞれ構成するとともに相互間に空隙をあけて並列配置される互いに独立した複数の第１吸気管半部の両端の少なくとも一方が相互に連結されて成る第１接合部材と、各吸気管の残部をそれぞれ構成する複数の第２吸気管半部が各吸気管の長手方向中間部に位置する架橋部で相互に連結されて成る第２接合部材とが振動溶着されて吸気マニホールドが構成されるので、吸気マニホールドが備える複数の吸気管相互の間隔を比較的広く設定してエンジンレイアウトの自由度を向上することが可能であり、また各吸気管相互は、それらの吸気管の両端の少なくとも一方と、吸気管の長手方向中間部の架橋部とで連結されるだけであるため、各吸気管相互間がその全長にわたって一体に連結された構造の吸気マニホールドに比べると使用される合成樹脂の量を抑えることができる。しかも複数の第１吸気管半部の相対位置を一定に定めて形成される第１接合部材と、第１吸気管半部とともに吸気管をそれぞれ構成する複数の第２吸気管半部の相対位置を一定に定めて形成される第２接合部材とが振動溶着されるので、複数の第１吸気管半部の個別管理や、複数の第２吸気管半部の個別管理が不要となり、吸気マニホールドを精度よく、かつ効率的に製造することができる。
【００２６】
また請求項２記載の発明によれば、前記振動溶着時において、第２接合部材側での反りや歪みを第１接合部材との接触面で振動溶着金型のバックアップ部材により矯正する際に、前記架橋部に設けた弱剛性部によって吸収させることにより第２接合部材の全体形状を矯正することができるから、振動溶着後の合わせ面でのずれが生じることがないようにして溶着品質を向上することができる。
【図面の簡単な説明】
【図１】 サージタンクおよび 吸気マニホールドの斜視図である。
【図２】 第１接合部材の斜視図である。
【図３】 第２接合部材の斜視図である。
【図４】 図１の４−４線断面図である。
【符号の説明】
５・・・吸気管
１１・・・第１接合部材
１２・・・第２接合部材
１３・・・第１吸気管半部
１４・・・第２吸気管半部
１５・・・架橋部
１５ａ・・・弱剛性部
Ｍ・・・吸気マニホールド[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an intake manifold configured by vibration welding of a plurality of joining members made of synthetic resin.
[0002]
[Prior art]
Conventionally, such an intake manifold is already known, for example, in Japanese Utility Model Laid-Open No. 6-73368. In this case, a plurality of first intake pipe halves respectively constituting a part of a plurality of intake pipes extend over the entire length thereof. An intake manifold is configured by vibration welding between a first joining member that is integrally connected and a second joining member that is formed by integrally connecting a plurality of second intake half halves that constitute the remaining portion of each intake pipe. Has been.
[0003]
[Problems to be solved by the invention]
However, the above-described conventional one has a structure in which the intake pipes are integrally connected over the entire length, and not only the amount of the synthetic resin required to form the intake manifold is relatively large, Since it can be applied only when the distance between the intake pipes is relatively short, the engine layout is limited.
[0004]
In order to eliminate such drawbacks, a first synthetic resin first member made up of at least one end of each half of the plurality of intake pipes that are configured to be spaced apart from each other is commonly connected. It is conceivable to vibrate and weld the joining member and a plurality of second joining members that are configured separately from each other and that are independent of each other. However, in the intake manifold having such a configuration, it is difficult to say that the manufacturing efficiency is efficient because the management of each of the second joint members is required, and the second joint member is more effective than the first joint member during vibration welding. There is also a possibility that they will be coupled out of alignment.
[0005]
The present invention has been made in view of such circumstances, and provides an intake manifold that can improve the degree of freedom of engine layout while suppressing the amount of synthetic resin used, and can be manufactured accurately and efficiently. For the purpose.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, according to a first aspect of the present invention, there is provided an intake manifold configured by vibration welding of a plurality of joint members made of synthetic resin, wherein each of a plurality of intake pipes is formed , a plurality of second constituting a first joint member in which at least one of the ends of the plurality of first intake pipe halves, which are connected to each other independent of each other which are arranged in parallel at air gap, the remainder of the intake pipes, respectively It is characterized in that the intake pipe halves are vibration welded to a second joining member in which the intake pipe halves are connected to each other by a bridging portion located in the longitudinal intermediate portion of each intake pipe.
[0007]
According to such a configuration, it is possible to relax the engine layout restriction by setting a relatively wide interval between the plurality of intake pipes provided in the intake manifold, and each intake pipe is connected to the intake pipes. The synthetic resin is used in comparison with an intake manifold having a structure in which at least one end of each of the intake pipes and a bridging portion at the intermediate portion in the longitudinal direction of the intake pipe are connected to each other over the entire length. Can be reduced. In addition, the first joint member formed with the relative positions of the plurality of first intake pipe halves fixed, and the relative positions of the plurality of second intake pipe halves that respectively constitute the intake pipe together with the first intake pipe half. Since the second joining member formed with a constant value is vibration welded, the intake manifold can be manufactured with high accuracy and efficiency.
[0008]
According to a second aspect of the present invention, in addition to the configuration of the first aspect of the invention, the bridging portion is provided with a weakly rigid portion that is less rigid than an adjacent portion. For example, at the time of vibration welding of the first and second joining members, when the warp or distortion on the second joining member side is corrected by the backup member of the vibration welding mold on the contact surface with the first joining member, the weakly rigid portion Therefore, the overall shape of the second joining member can be corrected, and the welding quality can be improved in such a manner that no deviation occurs on the mating surface after vibration welding.
[0009]
According to a third aspect of the present invention, in addition to the configuration of the first or second aspect of the invention, the width of the bridge portion in the longitudinal direction of the intake pipe is the total length of the second half of the intake pipe in the longitudinal direction of the intake pipe. It is characterized by being smaller than.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.
[0011]
1 to 4 show an embodiment of the present invention. FIG. 1 is a perspective view of a surge tank and an intake manifold, FIG. 2 is a perspective view of a first joint member, and FIG. 3 is a perspective view of a second joint member. 4 and 4 are sectional views taken along line 4-4 of FIG.
[0012]
First, in FIG. 1, an intake manifold M connected to, for example, a four-cylinder engine (not shown) includes a plurality of, for example, four intake pipes 5, 5,. One end of each of the intake pipes 5, 5... Is connected to the surge tank 6 in common, and the other end of each intake pipe 5, 5. Is done. Thus, each of the intake pipes 5, 5... Is arranged in parallel with a shape that reverses, for example, approximately 180 degrees from the surge tank 6 to the engine mounting flange 9. The opening end portion of the first tank half body 7 made of synthetic resin and the opening end portion of the second tank half body 8 made of synthetic resin opened to the first tank half body 7 side are vibration welded over the entire circumference. In this configuration, one end of each of the intake pipes 5, 5... Provided in the intake manifold M is connected to one side surface of the first tank half 7 in common and integrally. Further, a conduit 10 for guiding air, the flow rate of which is controlled by a throttle valve (not shown), into the surge tank 6 is connected to the first tank half 7 on one end side along the arrangement direction of the intake pipes 5, 5. .
[0013]
2 to 4 together, the intake manifold M is configured by vibration welding the first and second joining members 11 and 12 respectively formed of synthetic resin.
[0014]
The first joint member 11 is at least one of both ends of a plurality of, for example, four first intake pipe halves 13, 13... Constituting the main part that is a part of each of the intake pipes 5, 5. Are connected in common, and the first intake pipe halves 13, 13... And the first intake pipe halves 13, 13. The tank half body 7 and the engine mounting flange 9 are provided in common and integrally with the other ends of the first intake pipe half portions 13, 13.
[0015]
The first intake pipe halves 13, 13... Are formed to have openings 16, 16... On the outer peripheral side of the bent reversal part. ... are formed integrally so as to project outward.
[0016]
In the second joining member 12, a plurality of, for example, four second intake pipe halves 14, 14,... Constituting the remaining portions of the intake pipes 5, 5,. The three bridging portions 15 are connected to each other. As shown in FIGS. 1 and 3, the width of the bridge portion 15 in the longitudinal direction of the intake pipe is smaller than the total length of the second intake pipe half 14 in the longitudinal direction of the intake pipe.
[0017]
The second intake pipe halves 14, 14... Are formed so as to close the openings 16, 16... Of the first intake pipe halves 13, 13. Are integrally formed with joint flanges 18, 18 ... corresponding to the joint flanges 17, 17 ... of the first intake pipe halves 13, 13 ..., respectively.
[0018]
Thus, when the intake manifold M is constructed by vibration welding the first and second joining members 11, 12, the joint flanges 17, 17,..., 18, 18,. become.
[0019]
In addition, the bridging portions 15 are connected to the second intake pipe halves 14, 14 so as to be arranged in a curved reversal portion which is a longitudinal intermediate portion of each of the intake pipes 5, 5 ... In the approximate center of each bridging portion 15 along the direction of arrangement of the intake pipes 5, 5..., Weakly rigid portions 15a having a convexly bent outward shape are formed on both sides of the weakly rigid portions 15a. It is provided so as to be less rigid than the adjacent part by making it thinner.
[0020]
Next, to explain the action of this embodiment, a plurality of, for example, independent of each other in parallel spaced gaps therebetween with configuring a plurality of, for example, four intake pipes 5, 5 ... which is part of the main portion, respectively each structure as the first joint member 11 which is formed by interconnected (both in this embodiment) four least one of the first intake pipe halves 13, 13 at both ends of the intake pipes 5, 5 ... remainder of A plurality of, for example, four second intake pipe halves 14, 14... Are connected to each other by a bridging portion 15. The intake manifold M is configured by welding.
[0021]
In such an intake manifold M, the intervals between the intake pipes 5, 5... Can be set relatively wide, and the restrictions on the engine layout can be relaxed. In addition, the intake pipes 5, 5... Are connected to each other by at least one of the both ends of the intake pipes 5, 5. It is only done. Therefore, the amount of synthetic resin used to form the intake manifold M can be reduced as compared with the conventional intake manifold having a structure in which the intake pipes 5, 5.
[0022]
In addition, the first joint member 11 formed with the relative positions of the plurality of first intake pipe halves 13, 13... Fixed and the first intake pipe halves 13, 13. Since the plurality of second intake pipe halves 14, 14... Constituting the second joint member 12 formed with a fixed relative position are vibration welded, the individual first intake pipe halves 13, 13. The management and the separate management of the second intake pipe halves 14, 14,... Are not required, and the intake manifold M can be manufactured accurately and efficiently.
[0023]
Further, the bridging portions 15 are provided with weakly rigid portions 15a that are less rigid than the adjacent portions. Therefore, at the time of vibration welding of the second bonding member 12 and the first bonding member 11, when the warp or distortion on the second bonding member 12 side is corrected by the backup member of the vibration welding mold on the contact surface with the first bonding member 11. In addition, the overall shape of the second joining member 12 can be corrected by absorbing it by the weakly rigid portions 15a, so that there is no deviation at the mating surface after vibration welding. The welding quality can be improved.
[0024]
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. It is.
[0025]
【The invention's effect】
As described above, according to the present invention, at least one of the ends of the plurality of independent first intake pipe halves that respectively constitute a part of the plurality of intake pipes and that are arranged in parallel with a gap therebetween is provided. A first joint member connected to each other and a plurality of second intake pipe halves constituting the remaining portion of each intake pipe are connected to each other by a bridging portion located at a longitudinal intermediate portion of each intake pipe. Since the intake manifold is configured by vibration welding with the second joining member, it is possible to improve the degree of freedom of engine layout by setting a relatively wide interval between the plurality of intake pipes provided in the intake manifold , In addition, each intake pipe is simply connected by at least one of both ends of the intake pipe and a bridge portion in the longitudinal intermediate portion of the intake pipe. The And as compared to an intake manifold of the structure can be suppressed the amount of synthetic resin used. In addition, the first joint member formed with the relative positions of the plurality of first intake pipe halves fixed, and the relative positions of the plurality of second intake pipe halves that respectively constitute the intake pipe together with the first intake pipe half. And the second joining member formed with a constant value are vibration welded, so that individual management of the plurality of first intake pipe halves and individual management of the plurality of second intake pipe halves are not required, and the intake manifold Can be manufactured accurately and efficiently.
[0026]
According to the invention of claim 2 , when correcting the warp or distortion on the second bonding member side by the backup member of the vibration welding mold at the contact surface with the first bonding member during the vibration welding, Since the entire shape of the second joining member can be corrected by absorbing the weakly rigid portion provided in the bridging portion, the welding quality is improved so that there is no deviation on the mating surface after vibration welding. can do.
[Brief description of the drawings]
FIG. 1 is a perspective view of a surge tank and an intake manifold.
FIG. 2 is a perspective view of a first joining member.
FIG. 3 is a perspective view of a second joining member.
4 is a cross-sectional view taken along line 4-4 of FIG.
[Explanation of symbols]
5 ... intake pipe 11 ... 1st joining member 12 ... 2nd joining member 13 ... 1st intake pipe half 14 ... 2nd intake pipe half 15 ... bridging part 15a. ..Weak rigid part M ... Intake manifold

Claims (3)

合成樹脂から成る複数の接合部材（１１，１２）の振動溶着により構成される吸気マニホールドにおいて、
複数の吸気管（５）の一部をそれぞれ構成するとともに相互間に空隙をあけて並列配置される互いに独立した複数の第１吸気管半部（１３）の両端の少なくとも一方が相互に連結されて成る第１接合部材（１１）と、各吸気管（５）の残部をそれぞれ構成する複数の第２吸気管半部（１４）が前記各吸気管（５）の長手方向中間部に位置する架橋部（１５）で相互に連結されて成る第２接合部材（１２）とが振動溶着されて成ることを特徴とする吸気マニホールド。In the intake manifold constituted by vibration welding of a plurality of joining members (11, 12) made of synthetic resin,
At least one of both ends of the plurality of independent first intake pipe halves (13) that are part of each of the plurality of intake pipes (5) and are arranged in parallel with a gap between them is connected to each other. And a plurality of second intake pipe halves (14) constituting the remaining part of each intake pipe (5) are located in the longitudinal intermediate part of each intake pipe (5). An intake manifold, comprising: a second joining member (12) connected to each other at a bridging portion (15) by vibration welding. 前記架橋部（１５）に、隣接部位よりも剛性を弱めた弱剛性部（１５ａ）が設けられることを特徴とする請求項１記載の吸気マニホールド。  The intake manifold according to claim 1, wherein the bridging portion (15) is provided with a weakly rigid portion (15a) whose rigidity is weaker than that of an adjacent portion. 前記架橋部（１５）の吸気管（５）長手方向の幅は、前記第２吸気管半部（１４）の吸気管（５）長手方向の全長よりも小さいことを特徴とする、請求項１又は２記載の吸気マニホールド。The width of the bridge pipe (15) in the longitudinal direction of the intake pipe (5) is smaller than the overall length of the second intake pipe half (14) in the longitudinal direction of the intake pipe (5). Or the intake manifold of 2.
JP2001168562A 2001-06-04 2001-06-04 Intake manifold Expired - Lifetime JP3817598B2 (en)

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JP4020058B2 (en) 2003-10-10 2007-12-12 日産自動車株式会社 Intake device for internal combustion engine
DE202006011026U1 (en) 2006-07-14 2007-12-06 Mann + Hummel Gmbh Suction device for an internal combustion engine
JP5912013B2 (en) * 2010-12-28 2016-04-27 株式会社ミクニ Resin intake manifold
JP5797923B2 (en) * 2011-03-31 2015-10-21 株式会社ケーヒン Intake manifold for internal combustion engine
JP5922939B2 (en) * 2012-01-31 2016-05-24 富士重工業株式会社 Resin intake manifold

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US5636605A (en) * 1994-06-22 1997-06-10 Toyota Jidosha K.K. Composite intake manifold for an internal combustion engine
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JP2013015056A (en) * 2011-07-03 2013-01-24 Honda Motor Co Ltd Intake manifold

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DE60201466D1 (en) 2004-11-11

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