JPH01300049A - Intake manifold - Google Patents
Intake manifoldInfo
- Publication number
- JPH01300049A JPH01300049A JP63131199A JP13119988A JPH01300049A JP H01300049 A JPH01300049 A JP H01300049A JP 63131199 A JP63131199 A JP 63131199A JP 13119988 A JP13119988 A JP 13119988A JP H01300049 A JPH01300049 A JP H01300049A
- Authority
- JP
- Japan
- Prior art keywords
- intake manifold
- hollow resin
- molded product
- resin molded
- reinforcing layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920005989 resin Polymers 0.000 claims abstract description 38
- 239000011347 resin Substances 0.000 claims abstract description 38
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 23
- 230000002093 peripheral effect Effects 0.000 claims abstract description 9
- 238000010107 reaction injection moulding Methods 0.000 claims description 14
- 229920003002 synthetic resin Polymers 0.000 claims description 7
- 239000000057 synthetic resin Substances 0.000 claims description 7
- 239000000446 fuel Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000002347 injection Methods 0.000 abstract description 7
- 239000007924 injection Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 description 10
- 238000000071 blow moulding Methods 0.000 description 7
- 239000000956 alloy Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 229910001152 Bi alloy Inorganic materials 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- JWVAUCBYEDDGAD-UHFFFAOYSA-N bismuth tin Chemical compound [Sn].[Bi] JWVAUCBYEDDGAD-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010101 extrusion blow moulding Methods 0.000 description 1
- 238000010102 injection blow moulding Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000001721 transfer moulding Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0001—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular acoustical properties
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明は、混合気を自動車等のエンジンに供給する際
の流路となるインテークマニホールドに関し、特に、軽
量化を図れる合成樹脂製のインテークマニホールドに関
する。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an intake manifold that serves as a flow path for supplying air-fuel mixture to an engine of an automobile, etc., and particularly relates to an intake manifold made of synthetic resin that can reduce weight. Regarding.
〈従来の技術〉
従来、合成樹脂製のインテークマニホールドとしては、
特開昭５８−８２０５９号公報に記載されているものが
知られている。<Conventional technology> Conventionally, intake manifolds made of synthetic resin were
The one described in Japanese Unexamined Patent Publication No. 58-82059 is known.
この従来公報に記載されているインテークマニホールド
は、熱可盟性ポリエステルから形成され、つぎのように
製造されていた。The intake manifold described in this prior art publication was made of thermoplastic polyester and was manufactured as follows.
まず、低融点合金である錫−ビスマス合金からなる中子
を製造しておき、その中子をインテークマニホールドを
射出成形やトランスファー成形等により成形する成型用
型にセットする。First, a core made of a tin-bismuth alloy, which is a low melting point alloy, is manufactured, and the core is set in a mold for molding the intake manifold by injection molding, transfer molding, or the like.
そして、その成型用型に熱可塑性ポリエステルを注入し
く注入圧力は４００ ｋｇｆ／ｃｍ’程度）、インテー
クマニホールドを成形する。Then, thermoplastic polyester is injected into the mold (injection pressure is about 400 kgf/cm') to mold the intake manifold.
その後、中子とともにインテークマニホールドを離型さ
せて、所定温度の油槽内に入れる。その際、中子はその
油槽内で流動化状態となり、インテークマニホールドか
ら中子が除去されることとなる。Thereafter, the intake manifold and core are released from the mold and placed in an oil bath at a predetermined temperature. At this time, the core becomes fluidized in the oil tank, and the core is removed from the intake manifold.
そして、流動化した中子を再利用するために回収すると
ともに、油槽内からインテークマニホールドを取り出せ
ば、所定の製品を得ることができる。Then, by collecting the fluidized core for reuse and taking out the intake manifold from the oil tank, a predetermined product can be obtained.
〈発明が解決しようとする課題〉
従来の合成樹脂製のインテークマニホールドは、上述の
ように製造されており、軽量化を図れるものの、次のよ
うな課題があった。<Problems to be Solved by the Invention> Conventional intake manifolds made of synthetic resin are manufactured as described above, and although weight reduction can be achieved, they have the following problems.
すなわち、成形後、中子を取り除く必要があり、中子除
去作業の工数に加え、油槽等の設備が必要となって、イ
ンテークマニホールドのコストを上昇させることとなっ
ていた。That is, it is necessary to remove the core after molding, and in addition to the man-hours required for core removal work, equipment such as an oil tank is required, increasing the cost of the intake manifold.
また、中子に低融点合金からなるものを利用しているこ
とから、その中子の重量が重く、成形用型へのセット等
の取り扱いが不便となって作業能率を低下させ、製造工
数の増大を招き、インテークマニホールドのコストアッ
プの一因となっていた。In addition, since the core is made of a low melting point alloy, the core is heavy, making it difficult to handle when setting it into a mold, reducing work efficiency and reducing manufacturing man-hours. This caused an increase in intake manifold costs.
さらに、この低融点合金は高価なために再利用する必要
があり、油槽内に回収装置等が必要となって、−層イン
テークマニホールドのコストを上昇させることとなって
いた。Furthermore, since this low melting point alloy is expensive, it needs to be reused, and a recovery device or the like is required in the oil tank, which increases the cost of the -layer intake manifold.
この発明は、上述の課題を解決するもので、簡単かつ容
易に製造でき、製造工数・コストを低減させることがで
きるインテークマニホールドを提供することを目的とす
る。The present invention solves the above-mentioned problems, and aims to provide an intake manifold that can be manufactured simply and easily, and can reduce manufacturing man-hours and costs.
く課題を解決するための手段〉
この発明に係るインテークマニホールドは、混合気をエ
ンジンに供給する際の流路となる合成樹脂製のインテー
クマニホールドであって、前記流路内周面が中空樹脂成
形品から形成され、該中空樹脂成形品の外周部位に反応
射出成形により形成される補強層が配設されて構成され
ていることを特徴とする。Means for Solving the Problems> An intake manifold according to the present invention is an intake manifold made of synthetic resin that serves as a flow path for supplying an air-fuel mixture to an engine, and the inner peripheral surface of the flow path is formed by hollow resin molding. A reinforcing layer formed by reaction injection molding is provided on the outer periphery of the hollow resin molded product.
〈発明の作用・効果〉
この発明に係るインテークマニホールドは、混合気の流
路内局面が中空樹脂成形品から形成され、この中空樹脂
成形品の外周部位に反応射出成形により形成される補強
層が配設されて構成されている。そのため、予め中空樹
脂成形品を形成しておき、その中空樹脂成形品を、所定
の成形用型にインサートとしてセットし、そして、中空
樹脂成形品外周部位に反応射出成形により補強層を形成
し、成形後に離型させれば、中空樹脂成形品と補強層と
からなる所定のインテークマニホールドを製造できる。<Operations and Effects of the Invention> In the intake manifold according to the present invention, the inner surface of the air-fuel mixture flow path is formed from a hollow resin molded product, and a reinforcing layer formed by reaction injection molding is provided on the outer periphery of the hollow resin molded product. arranged and configured. Therefore, a hollow resin molded product is formed in advance, the hollow resin molded product is set as an insert in a predetermined molding mold, and a reinforcing layer is formed on the outer periphery of the hollow resin molded product by reaction injection molding. By releasing the mold after molding, a predetermined intake manifold consisting of a hollow resin molded product and a reinforcing layer can be manufactured.
すなわち、この発明に係るインテークマニホールドは、
成形後に取り除く低融点合金からなる中子を使用するこ
となく製造でき、従来必要であった中子の除去工程が不
要となって、簡単かつ容易。That is, the intake manifold according to the present invention is
It can be manufactured without using a core made of a low melting point alloy that is removed after molding, and the process of removing the core that was previously required is unnecessary, making it simple and easy.
に製造でき、さらに従来必要であった中子の除去装置・
回収装置等が不要となり、コストを低減して製造できる
。また、反応射出成形用型へインサートをセットする場
合に、そのインサートが中空樹脂成形品であることから
、軽量であり、そのインサートを取り扱う作業能率を低
下させることもない、なお、反応射出成形に使用される
インサートが中空樹脂成形品であることから、インテー
クマニホールドの成形時に中空樹脂成形品が成形材料に
より変形される危惧があるが、反応射出成形は、その材
料の注入圧力を１０〜３０ ｋｇｆ／ｃＩｌ′を低圧と
しているこから、そのような問題は生じないしたがって
、この発明に係るインテークマニホールドは、簡単かつ
容易に製造でき、製造工数・コストを低減させることが
できる。In addition, the core removal equipment and
There is no need for a recovery device, etc., and manufacturing costs can be reduced. In addition, when setting an insert into a mold for reaction injection molding, since the insert is a hollow resin molded product, it is lightweight and does not reduce the work efficiency of handling the insert. Since the insert used is a hollow resin molded product, there is a risk that the hollow resin molded product may be deformed by the molding material when molding the intake manifold, but reaction injection molding reduces the injection pressure of the material to 10 to 30 kgf. Since /cIl' is a low pressure, such a problem does not occur. Therefore, the intake manifold according to the present invention can be manufactured simply and easily, and the number of manufacturing steps and costs can be reduced.
〈実施例〉 以下、この発明の一実施例を図面に基づいて説明する。<Example> Hereinafter, one embodiment of the present invention will be described based on the drawings.
第１・２図に示す実施例のインテークマニホールド１は
、従来と同様に、上部より順に、サージタンク部４、ポ
ート部５、及びポートフランジ部６を備え、内部に、サ
ージタンク部４における後部側（第２図の後方側）の図
示しない入口部から各ポート部５先端まで、混合気を過
通分配させる流路１ａが形成されている。The intake manifold 1 of the embodiment shown in FIGS. 1 and 2 includes a surge tank section 4, a port section 5, and a port flange section 6 in this order from the top, as in the conventional case. From an inlet (not shown) on the side (rear side in FIG. 2) to the tip of each port section 5, a flow path 1a is formed through which the air-fuel mixture is passed and distributed.
フランジ部４ａは、サージタンク部４をエンジンルーム
内の所定のブラケット等にボルト等を利用して接続させ
るものであり、フランジ部４ｂは、サージタンク部４後
部の入口部を図示しないキャブレタからの流路と接続さ
せるものであり、ポートフランジ部６は、４本の各ポー
ト部５をそれぞれ図示しないシリンダヘッドに接続させ
るものである。The flange portion 4a connects the surge tank portion 4 to a predetermined bracket in the engine room using bolts, etc., and the flange portion 4b connects the rear inlet of the surge tank portion 4 to a carburetor (not shown). The port flange portion 6 connects each of the four port portions 5 to a cylinder head (not shown).
そして、このインテークマニホールド１は、流路１ａ内
周面を中空樹脂成形品２から形成され、その中空樹脂成
形品２の外周部位に反応射出成形から形成される補強層
３が配設されて構成されている。This intake manifold 1 has an inner circumferential surface of a flow path 1a formed from a hollow resin molded product 2, and a reinforcing layer 3 formed by reaction injection molding is provided on the outer circumference of the hollow resin molded product 2. has been done.
中空樹脂成形品２は、第１〜４図に示すように、サージ
タンク部４の内周面を形成するタンク中空部２ａと、各
ポート部５の内周面を形成する４本のポート中空部２ｂ
とを備えている。この中空樹脂成形品２は、所望により
補強材としてのガラス繊維等を混入されたポリアミド等
の合成樹脂の押出ブロー成形品である。なお、この中空
樹脂成形品２は、後述の補強層３の反応射出成形時、補
強Ｎ３との固着強度が良好なように、補強層３と同質材
から形成することが望ましい。As shown in FIGS. 1 to 4, the hollow resin molded product 2 includes a tank hollow part 2a forming the inner circumferential surface of the surge tank part 4, and four port hollow parts forming the inner circumferential surface of each port part 5. Part 2b
It is equipped with This hollow resin molded product 2 is an extrusion blow molded product of a synthetic resin such as polyamide into which glass fiber or the like as a reinforcing material is mixed as desired. Note that this hollow resin molded product 2 is desirably formed from the same material as the reinforcing layer 3 so that it has good adhesion strength to the reinforcing layer N3 during reaction injection molding of the reinforcing layer 3, which will be described later.
この中空樹脂成形品２は、ブロー成形された直後は、第
３・４図に示すように、後述の反応射出成形用型１１へ
のセット時を考慮し、セットが容易なインサート２０と
して使用できるよう、タンク中空部２８前後両端と、各
ポート中空部２ｂの先端とに、固定部２Ｃ・２ｄ・２ｅ
を備えている、なお、これら固定部２Ｃ・２ｄ・２ｅの
うち、固定部２ｃを除いた固定部２ｄ・２ｅは、反応射
出成形後に切除されるものである。ちなみに、このイン
サート２０の形状は、従来の低融点合金から形成される
中子と略同形としており、従来の中子も同様な固定部を
備えていた。また、この中空樹脂成形品２のブロー成形
時においては、固定部２ｄの部位からエアが吹ぎ込まれ
て成形されるものであるが、切除されることとなる固定
部２ｅの部位からエアを吹き込んで成形してもよい。Immediately after blow molding, this hollow resin molded product 2 can be used as an insert 20 that is easy to set, as shown in FIGS. Fixing parts 2C, 2d, and 2e are provided at both front and rear ends of the tank hollow part 28 and at the tip of each port hollow part 2b.
Of these fixing parts 2C, 2d, and 2e, the fixing parts 2d and 2e excluding the fixing part 2c are cut off after reaction injection molding. Incidentally, the shape of this insert 20 is approximately the same as that of a conventional core made of a low melting point alloy, and the conventional core also had a similar fixing part. In addition, during blow molding of the hollow resin molded product 2, air is blown into the fixed portion 2d to form the product, but air is blown from the fixed portion 2e which is to be cut out. It may also be molded by blowing.
補強層３は、ＲＩＭ用ウレタン、ＲＩＭ用エポキシ、Ｒ
ＩＭ用ポリポリアミドこれらに所望によりガラス繊維等
の補強材が混入されているものから構成され、中空樹脂
成形品２におけるタンク中空部２ａ・ポート中空部２ｂ
の外周を被覆するタンク被覆部３ａ・ポート被覆部３ｂ
を備え、タンク被覆部３ａにはフランジ部４ａ・４ｂが
形成され、ポート被覆部３ｂにはポートフランジ部６が
形成されている。The reinforcing layer 3 is made of urethane for RIM, epoxy for RIM, R
Polypolyamide for IM It is composed of a material in which a reinforcing material such as glass fiber is mixed as desired.
Tank covering part 3a and port covering part 3b covering the outer periphery of
Flange portions 4a and 4b are formed on the tank covering portion 3a, and a port flange portion 6 is formed on the port covering portion 3b.
この補強層３を形成する反応射出成形用型１１は、第５
図に示すように、それぞれエポキシ樹脂等の合成樹脂か
らなる固定型１２と可動型１３とを備えている。固定型
１２と可動型１３とは、型締め時に、所定のキャビティ
１１ａを形成する型面１２ａ・ｆ３ａと、インサート２
０（中空樹脂成形品２）における固定部２Ｃ・２ｄ・２
ｅの保持用の凹部１１ｂを形成する凹部１２ｂ・１３ｂ
とをそれぞれ備えている。The reaction injection molding mold 11 for forming this reinforcing layer 3 is the fifth
As shown in the figure, a fixed mold 12 and a movable mold 13 each made of synthetic resin such as epoxy resin are provided. The fixed mold 12 and the movable mold 13 have mold surfaces 12a and f3a that form a predetermined cavity 11a, and an insert 2 during mold clamping.
Fixing part 2C, 2d, 2 in 0 (hollow resin molded product 2)
Recesses 12b and 13b forming recess 11b for holding e.
They each have the following.
つぎに、実施例のインテークマニホールド１の製造につ
いて述べると、固定部２Ｃ・２ｄ・２ｅを備えた中空樹
脂成形品２を予めブロー成形により形成しておく。Next, the manufacturing of the intake manifold 1 of the embodiment will be described. A hollow resin molded product 2 including fixing portions 2C, 2d, and 2e is formed in advance by blow molding.
そして、固定部２ｃ・２ｄ・２ｅを所定の凹部１３ｂに
保持させて中空樹脂成形品２をインサート２０として可
動型１３にセットする。Then, the hollow resin molded product 2 is set in the movable mold 13 as an insert 20 with the fixing parts 2c, 2d, and 2e held in predetermined recesses 13b.
その後、第５図に示すように型締めして、キャビティｌ
ｌａ内へ図示しないスプル、ランナ及びゲートを経て所
定の反応射出材料を注入し、補強層３を成形する。この
時、成形に適するよう、成形用型１１やインサート２０
を１５０℃程度に加温しておくことが望ましい。また、
注入時、注入圧力が１０〜３０ ｋｇｆ／ｃｍ’程度で
、かつ、その際の温度が１３０〜１５０℃程度であるこ
とから、インサート２０が変形することはない。After that, the mold is clamped as shown in Fig. 5, and the cavity l is closed.
A predetermined reaction injection material is injected into la through a sprue, runner, and gate (not shown) to form the reinforcing layer 3. At this time, the mold 11 and insert 20 are set to be suitable for molding.
It is desirable to heat it to about 150°C. Also,
During injection, since the injection pressure is about 10 to 30 kgf/cm' and the temperature at that time is about 130 to 150°C, the insert 20 will not be deformed.
そして成形後、離型させ、補強層３から突出しているイ
ンサート２０（中空樹脂成形品２）における固定部２ｄ
・２ｅを切除すれば、所定のインテークマニホールド１
を得ることができる。After molding, the mold is released and the fixing part 2d of the insert 20 (hollow resin molded product 2) protruding from the reinforcing layer 3 is fixed.
・If 2e is removed, the specified intake manifold 1
can be obtained.
したがって、このインテークマニホールド１では、軽量
な中空樹脂成形品２をインサート２０として、反応射出
成形により補強層３を形成し、成形後に固定部２ｄ・２
ｅを切除する簡単な作業だけで、簡単かつ容易に製造で
き、既述の発明の作用・効果の欄でのべたと同様な効果
を奏する。Therefore, in this intake manifold 1, a lightweight hollow resin molded product 2 is used as the insert 20, a reinforcing layer 3 is formed by reaction injection molding, and after molding, the fixing parts 2d and 2
It can be manufactured simply and easily by just a simple operation of cutting out e, and the same effects as those described in the section of the functions and effects of the invention described above are achieved.
また、このインテークマニホールド１では、流路１ａの
内周面を形成する中空樹脂成形品２がブロー成形により
形成されており、その内周面を平滑にすることが容易で
あり、インテークマニホールドｌの吸気性能を向上させ
ることができる。In addition, in this intake manifold 1, the hollow resin molded product 2 that forms the inner peripheral surface of the flow path 1a is formed by blow molding, and the inner peripheral surface can be easily made smooth. Intake performance can be improved.
さらにまた、従来の中子を使用した場合の製造において
は、中子が除去される際、その成形用型へのセット用の
固定部も除去されるため、サージタンク部４における前
部の位置にめくら蓋等を配設して、中子が除去された部
位を塞ぐ必要があった。しかし、このインテークマニホ
ールド１では、サージタンク部４の前部では、第２図に
示すように、中空樹脂成形品２の袋状の固定部２Ｃがそ
のまま配置されるため、従来必要であっためくら蓋を配
設させる作業を不要にすることができる。Furthermore, in manufacturing using a conventional core, when the core is removed, the fixing part for setting it in the mold is also removed, so the position of the front part in the surge tank part 4 It was necessary to install a blind cover or the like to cover the area where the core was removed. However, in this intake manifold 1, the bag-shaped fixing part 2C of the hollow resin molded product 2 is placed as is in the front part of the surge tank part 4, as shown in FIG. It is possible to eliminate the need for the work of arranging the lid.
なお、実施例では、中空樹脂成形品２をブロー成形のう
ち押出ブロー成形により形成することを例示したが、公
知の射出ブロー成形により形成してもよい。In addition, although the hollow resin molded article 2 is formed by extrusion blow molding among blow molding in the embodiment, it may be formed by known injection blow molding.
また、実施例では、ポート部５が略９０度曲がる形状の
ものを示したが、他にポート部５の形状が複雑に曲がっ
ていたり、ポート部５の中間部位に内径を大きくしてい
る部位が形成される形状であっても、その中空樹脂成形
品２を、ブロー成形等によって対応させた形状に容易に
形成して対処でき、インテークマニホールド１自体の形
状の制約を無くずことかできる。そのため、適した吸気
路の設定が容易に行なえ、エンジン性能の向上やエンジ
ンルーム内でのインテークマニホールド１の配置自由度
向上を図ることができる。ちなみに、中空樹脂成形品２
を１回のブロー成形で行なえないような場合には、複数
のブロー成形品を溶着・接着等の手段により液密に接合
させて対処すればよい。In addition, in the embodiment, the shape of the port portion 5 is bent approximately 90 degrees, but there are other portions where the shape of the port portion 5 is complicatedly curved, or where the inner diameter is increased in the middle portion of the port portion 5. Even if the shape is formed, the hollow resin molded product 2 can be easily formed into a corresponding shape by blow molding or the like, and restrictions on the shape of the intake manifold 1 itself can be eliminated. Therefore, it is possible to easily set a suitable intake passage, thereby improving engine performance and increasing the degree of freedom in arranging the intake manifold 1 within the engine room. By the way, hollow resin molded product 2
If this cannot be done in one blow molding, it may be possible to solve the problem by joining a plurality of blow molded products in a fluid-tight manner by means such as welding or adhesion.
さらに、実施例では、中空樹脂成形品２の外周部位全面
に補強層３を形成したものを示したが、第６図に示すイ
ンテークマニホールド２１のように、所定以上の強度が
必要な部位、すなわち所定部位にボルト等を利用して接
続されるフランジ部２４ａ・２４ｂを備えたサージタン
ク部２４と、ポートフランジ部２６とだけに補強層２３
を形成するように構成してもよい、このように構成する
場合には、中空樹脂成形品２２の外周部位全面に補強層
２３が形成されておらず、軽量化、材料費低減を図るこ
とができる。なお、３０は、サージタンク部２４とポー
トフランジ部２６との補強層２３を連結する連結部であ
り、この連結部３０は、各ポート部２５の表面に当接さ
れて配置されており、この連結部３０は、サージタンク
部２４とポートフランジ部２６との補強層２３を反応射
出成形時に連続した。１つのキャビティで同時に形成で
きるように配設したものである。そのため、反応射出成
形用型にゲートを２つ設けるようにして、連結部２５を
形成せｔに、サージタンク部２４とポートフランジ部２
６との補強層２３を独立させて成形してもよい。Furthermore, although the reinforcing layer 3 is formed on the entire outer circumference of the hollow resin molded product 2 in the embodiment, it is necessary to apply the reinforcing layer 3 to the entire outer circumferential portion of the hollow resin molded product 2. A reinforcing layer 23 is provided only at the surge tank section 24, which has flanges 24a and 24b connected to predetermined parts using bolts, etc., and the port flange section 26.
In this case, the reinforcing layer 23 is not formed on the entire outer circumference of the hollow resin molded product 22, and it is possible to reduce the weight and material cost. can. In addition, 30 is a connection part that connects the reinforcing layer 23 of the surge tank part 24 and the port flange part 26, and this connection part 30 is arranged so as to be in contact with the surface of each port part 25. The connecting portion 30 was formed by connecting the reinforcing layer 23 between the surge tank portion 24 and the port flange portion 26 during reaction injection molding. They are arranged so that they can be formed simultaneously in one cavity. Therefore, two gates are provided in the reaction injection molding mold to form the connecting part 25. In addition, the surge tank part 24 and the port flange part 2 are
6 and the reinforcing layer 23 may be formed independently.
第１図はこの発明の一実施例を示すインテークマニホー
ルドの断面図であり、第２図の１−１断面図、
第２図は同実施例の斜視図、
第３図は同実施例の中空樹脂成形品の斜視図、第４図は
同実施例の中空樹脂成形品の一部切欠斜視図、
第５図は同実施例の反応射出成形に使用する成形用型の
型締め時の断面図、
第６図は他の実施例を示す底面図である。
ｌ・・・インテークマニホールド、
１ａ・・・流路、
２・・・中空樹脂成形品、
３・・・補強層。
特 許 出 願 人
第 ６ 口
′）１Fig. 1 is a sectional view of an intake manifold showing an embodiment of the present invention, 1-1 sectional view of Fig. 2, a perspective view of the embodiment, and Fig. 3 a hollow view of the embodiment. Fig. 4 is a partially cutaway perspective view of a hollow resin molded product of the same example, and Fig. 5 is a cross-sectional view of the mold used for reaction injection molding of the same example when the mold is closed. , FIG. 6 is a bottom view showing another embodiment. l...Intake manifold, 1a...Flow path, 2...Hollow resin molded product, 3...Reinforcement layer. Patent applicant No. 6') 1
Claims (1)
製のインテークマニホールドであつて、前記流路内周面
が中空樹脂成形品から形成され、該中空樹脂成形品の外
周部位に反応射出成形により形成される補強層が配設さ
れて構成されていることを特徴とするインテークマニホ
ールド。The intake manifold is made of synthetic resin and serves as a flow path for supplying air-fuel mixture to the engine, and the inner peripheral surface of the flow path is formed from a hollow resin molded product, and reaction injection molding is performed on the outer peripheral portion of the hollow resin molded product. An intake manifold comprising a reinforcing layer formed by:
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63131199A JPH01300049A (en) | 1988-05-28 | 1988-05-28 | Intake manifold |
| DE19883838921 DE3838921A1 (en) | 1988-01-30 | 1988-11-17 | Intake elbow and process for its production |
| KR1019890002602A KR890017453A (en) | 1988-05-28 | 1989-03-03 | Suction manifold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63131199A JPH01300049A (en) | 1988-05-28 | 1988-05-28 | Intake manifold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01300049A true JPH01300049A (en) | 1989-12-04 |
Family
ID=15052353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63131199A Pending JPH01300049A (en) | 1988-01-30 | 1988-05-28 | Intake manifold |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH01300049A (en) |
| KR (1) | KR890017453A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040020668A (en) * | 2002-08-31 | 2004-03-09 | 현대자동차주식회사 | Method for manufacturing intake manifold for noise reduction |
| KR100862459B1 (en) * | 2006-10-24 | 2008-10-08 | 현대자동차주식회사 | Intake manifold structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6061377A (en) * | 1983-09-16 | 1985-04-09 | Toyoda Gosei Co Ltd | Spoiler |
| JPS63111031A (en) * | 1986-10-29 | 1988-05-16 | Nippon Plast Co Ltd | Intake manifold and its manufacture |
-
1988
- 1988-05-28 JP JP63131199A patent/JPH01300049A/en active Pending
-
1989
- 1989-03-03 KR KR1019890002602A patent/KR890017453A/en not_active Application Discontinuation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6061377A (en) * | 1983-09-16 | 1985-04-09 | Toyoda Gosei Co Ltd | Spoiler |
| JPS63111031A (en) * | 1986-10-29 | 1988-05-16 | Nippon Plast Co Ltd | Intake manifold and its manufacture |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040020668A (en) * | 2002-08-31 | 2004-03-09 | 현대자동차주식회사 | Method for manufacturing intake manifold for noise reduction |
| KR100862459B1 (en) * | 2006-10-24 | 2008-10-08 | 현대자동차주식회사 | Intake manifold structure |
Also Published As
| Publication number | Publication date |
|---|---|
| KR890017453A (en) | 1989-12-16 |
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