JPH1077917A - Resin hollow body - Google Patents
Resin hollow bodyInfo
- Publication number
- JPH1077917A JPH1077917A JP8230359A JP23035996A JPH1077917A JP H1077917 A JPH1077917 A JP H1077917A JP 8230359 A JP8230359 A JP 8230359A JP 23035996 A JP23035996 A JP 23035996A JP H1077917 A JPH1077917 A JP H1077917A
- Authority
- JP
- Japan
- Prior art keywords
- hollow body
- resin
- intake manifold
- flanges
- flange
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
- B29C66/322—Providing cavities in the joined article to collect the burr
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
- B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
- B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/301—Three-dimensional joints, i.e. the joined area being substantially non-flat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- 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
- B29K2995/0037—Other properties
- B29K2995/0065—Permeability to gases
- B29K2995/0067—Permeability to gases non-permeable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/748—Machines or parts thereof not otherwise provided for
- B29L2031/749—Motors
- B29L2031/7492—Intake manifold
-
- 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)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は樹脂製中空体に係
り、詳しくは、複数の分割体を各分割体に形成された張
出部にて接合してなる樹脂製中空体であって、例えば、
自動車のインテークマニホルドとして好適な樹脂製中空
体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin hollow body, and more particularly, to a resin hollow body formed by joining a plurality of divided bodies at overhangs formed in each divided body. ,
The present invention relates to a resin hollow body suitable as an intake manifold for an automobile.
【０００２】[0002]
【従来の技術】近年では、各種の自動車部品を樹脂化す
ることによって、その軽量化及び低コスト化を図ること
が行われている。この種の技術として、特開昭５８−２
１９０１９号公報は「エアクリーナ用樹脂インレットの
製作方法」を開示する。同公報に記載された樹脂インレ
ット１００は、図７に示すように、筒状体を二分した形
状をなすアッパ部材１０１とロア部材１０２とを備えて
いる。これらアッパ部材１０１及びロア部材１０２はい
ずれも、両側縁に沿って側部外方に延びる接合フランジ
部１０３，１０４を有している。この樹脂インレット１
００では、各接合フランジ部１０３，１０４を突き合わ
せた後、両者１０３，１０４を摩擦溶接することによっ
て、アッパ部材１０１及びロア部材１０２の接合を実現
できる。2. Description of the Related Art In recent years, it has been attempted to reduce the weight and cost of various automobile parts by converting them into resin. As this kind of technology, Japanese Patent Laid-Open Publication No. 58-2
JP 19019 discloses a "method of manufacturing a resin inlet for an air cleaner". As shown in FIG. 7, a resin inlet 100 described in the publication includes an upper member 101 and a lower member 102 each having a shape obtained by dividing a cylindrical body into two. Each of the upper member 101 and the lower member 102 has joining flange portions 103 and 104 extending laterally outward along both side edges. This resin inlet 1
In 00, after the joining flange portions 103 and 104 are abutted, the upper member 101 and the lower member 102 can be joined by friction welding the two 103 and 104.
【０００３】[0003]
【発明が解決しようとする課題】上記樹脂インレット１
００のように複数の部材を接合することによって構成さ
れた樹脂製中空体において、例えば、その内部に高圧の
流体を流通させた場合、中空体には各部材の接合部分を
拡開させるような力が作用する。即ち、図８に示すよう
に、中空体２００の各部材２０１，２０２に内圧Ｐが作
用することにより、各接合フランジ部２０３，２０４に
は両者２０３，２０４を離間させる力Ｆが作用すること
になる。このような力Ｆが作用することにより、図８に
示すように、各接合フランジ部２０３，２０４を含む接
合部分近傍には弾性変形（同図では変形量を誇張して示
す）が生じる。その結果、上記の樹脂製中空体にあって
は、両フランジ部２０３，２０４間に微少な隙間が形成
されて中空体２００内における気密性の低下を招く虞が
あった。The above resin inlet 1
In a resin hollow body formed by joining a plurality of members as in 00, for example, when a high-pressure fluid is allowed to flow through the inside of the resin hollow body, the joining portion of each member is expanded in the hollow body. Force acts. That is, as shown in FIG. 8, when the internal pressure P acts on each member 201, 202 of the hollow body 200, a force F acts to separate the joint flange portions 203, 204 from each other. Become. When such a force F acts, as shown in FIG. 8, elastic deformation (the amount of deformation is exaggerated in FIG. 8) occurs in the vicinity of the joint including the joint flanges 203 and 204. As a result, in the above-mentioned resin hollow body, a minute gap is formed between the two flange portions 203 and 204, and there is a possibility that the airtightness in the hollow body 200 may be reduced.
【０００４】本発明は、上記事情を鑑みてなされたもの
であり、その目的とするところは、複数の部材を接合し
てなる樹脂製中空体において、接合部分における各部材
の拡開を抑制することによりその気密性を向上させるこ
とにある。The present invention has been made in view of the above circumstances, and an object of the present invention is to suppress expansion of each member at a joint portion in a resin hollow body formed by joining a plurality of members. Thus, the airtightness is improved.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、内部に流体圧が作用する樹脂製中空体で
あって、複数に分割された分割体を当該分割体に形成さ
れた張出部にて接合してなる樹脂製中空体において、分
割体の外表面の少なくとも周方向に、同分割体から張出
部にまで延設されたリブを備えたことをその趣旨とす
る。In order to achieve the above object, the present invention provides a resin hollow body in which a fluid pressure acts therein, wherein a plurality of divided bodies are formed in the divided body. In the hollow body made of resin joined at the overhang portion, at least in the circumferential direction of the outer surface of the split body, a rib extending from the split body to the overhang portion is provided. .
【０００６】上記構成によれば、中空体の内圧が作用す
ることに起因した各張出部近傍の弾性変形がリブによっ
て抑制され、ひいてはその拡開が好適に防止される。According to the above construction, the elastic deformation in the vicinity of each overhanging portion caused by the internal pressure of the hollow body is suppressed by the rib, and the expansion thereof is suitably prevented.
【０００７】[0007]
【発明の実施の形態】本発明に係る樹脂製中空体を自動
車のインテークマニホルドに具体化した実施形態につい
て図１〜５を参照して説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which a resin hollow body according to the present invention is embodied in an intake manifold of an automobile will be described with reference to FIGS.
【０００８】図１はインテークマニホルド１１の平面図
であり、図２は同マニホルド１１の左側面図である。ま
た、図３は図１における３−３線に沿った断面図であ
り、図４は図１における４−４線に沿った断面図であ
る。FIG. 1 is a plan view of the intake manifold 11, and FIG. 2 is a left side view of the manifold 11. FIG. 3 is a sectional view taken along line 3-3 in FIG. 1, and FIG. 4 is a sectional view taken along line 4-4 in FIG.
【０００９】本実施形態におけるインテークマニホルド
１１は、６気筒エンジン（図示略）における吸気通路の
一部を構成するものである。図２に示すように、インテ
ークマニホルド１１は、吸気通路に沿い軸方向に、且
つ、上下に分割された上部分割体１２と下部分割体１３
とからなり、これら各分割体１２，１３を互いに接合し
て一体化させた構造を有している。各分割体１２，１３
はいずれも樹脂材料、例えば、ポリアミド樹脂（６６ナ
イロン等）により形成されている。また、インテークマ
ニホルド１１は、二股状をなす分岐管１４、分岐管１４
の下流側部分（図１の下側部分）が接続された集合管１
５、及び集合管１５に接続された６つの分配管１６とか
ら構成されている。これら各管１４〜１６の内部には、
分岐管１４の上流側開口１４ａから導入された外気が各
分配管１６の下流側開口１６ａ（図１に示す）にまで流
通することが可能な内部空間１７（図３及び図４にて示
す）がそれぞれ形成されている。The intake manifold 11 in this embodiment forms a part of an intake passage in a six-cylinder engine (not shown). As shown in FIG. 2, the intake manifold 11 includes an upper divided body 12 and a lower divided body 13 which are axially and vertically divided along an intake passage.
And has a structure in which these divided bodies 12 and 13 are joined together and integrated. Each divided body 12, 13
Are formed of a resin material, for example, a polyamide resin (66 nylon or the like). The intake manifold 11 includes a bifurcated branch pipe 14 and a branch pipe 14.
Pipe 1 to which the downstream part (lower part in FIG. 1) of the pipe is connected
5 and six distribution pipes 16 connected to the collecting pipe 15. Inside each of these tubes 14-16,
An internal space 17 (shown in FIGS. 3 and 4) through which outside air introduced from the upstream opening 14a of the branch pipe 14 can flow to the downstream opening 16a (shown in FIG. 1) of each distribution pipe 16. Are formed respectively.
【００１０】図１に示すように、分岐管１４の上流側部
分（図１の上側部分）には、下部分割体１３と一体成形
された取付フランジ２０が設けられている。この取付フ
ランジ２０にはスロットルバルブ（図示略）が内蔵され
たスロットルボディ（図示略）が取り付けられ、更に、
スロットルボディの上流側にはエアクリーナ（図示略）
等が接続される。エアクリーナ等を介して吸気通路内に
導入された外気は分岐管１４の上流側開口１４ａからイ
ンテークマニホルド１１の内部空間１７に導入される。As shown in FIG. 1, a mounting flange 20 integrally formed with the lower divided body 13 is provided at an upstream portion (upper portion in FIG. 1) of the branch pipe 14. A throttle body (not shown) having a built-in throttle valve (not shown) is attached to the mounting flange 20.
Air cleaner (not shown) upstream of the throttle body
Etc. are connected. Outside air introduced into the intake passage via an air cleaner or the like is introduced into the internal space 17 of the intake manifold 11 from the upstream opening 14a of the branch pipe 14.
【００１１】図１及び図２に示すように、各分配管１６
の下流側部分には、下部分割体１３と一体成形された取
付板２１が設けられており、同板２１によって各分配管
１６の下流側部分の各々が連結されている。この取付板
２１がエンジンのシリンダヘッド（図示略）に取り付け
られることにより、各分配管１６の下流側開口１６ａが
シリンダヘッドに形成された吸気ポート（図示略）にそ
れぞれ接続される。インテークマニホルド１１内に導入
された外気は、分岐管１４、集合管１５、及び各分配管
１６を通じて各吸気ポートに導入され、吸気バルブ（図
示略）が開弁した際に各ポートから燃焼室（図示略）内
に取り込まれる。As shown in FIG. 1 and FIG.
Is provided with a mounting plate 21 integrally formed with the lower divided body 13, and the downstream portion of each distribution pipe 16 is connected by the plate 21. By attaching the mounting plate 21 to a cylinder head (not shown) of the engine, the downstream openings 16a of the distribution pipes 16 are connected to intake ports (not shown) formed in the cylinder head. The outside air introduced into the intake manifold 11 is introduced into each intake port through a branch pipe 14, a collecting pipe 15, and each distribution pipe 16, and when each intake valve (not shown) opens, a combustion chamber ( (Not shown).
【００１２】図３及び図４に示すように、各分割体１
２，１３の周縁には、各管１４〜１６の軸方向に延びる
フランジ２２，２３がそれぞれ形成されており、これら
各フランジ２２，２３の接合に基づいて各分割体１２，
１３が一体化されている。As shown in FIG. 3 and FIG.
Flanges 22 and 23 extending in the axial direction of the pipes 14 to 16 are formed on the periphery of the pipes 2 and 13, respectively.
13 are integrated.
【００１３】図５は各管１４〜１６に形成された各フラ
ンジ２２，２３を拡大して示している。同図に示すよう
に、各フランジ２２，２３の接合面には、互いに対向す
る位置に分岐管１４の軸方向に延びる一対の溝２４，２
５がそれぞれ形成されている。また、各フランジ２２，
２３の周縁には突条２６，２７が形成されている。これ
ら突条２６，２７によって各フランジ２２，２３の剛性
が高められている。図１に示すように、上部分割体１２
に形成された突条２６には、フランジ２２の上面の水を
排出するための切欠き２８が複数形成されている。FIG. 5 is an enlarged view of each of the flanges 22 and 23 formed on each of the tubes 14 to 16. As shown in the figure, a pair of grooves 24, 2 extending in the axial direction of the branch pipe 14 are provided at the joint surfaces of the flanges 22, 23 at positions facing each other.
5 are formed. In addition, each flange 22,
Projections 26 and 27 are formed on the periphery of 23. The rigidity of each of the flanges 22 and 23 is enhanced by these ridges 26 and 27. As shown in FIG.
Are formed with a plurality of cutouts 28 for discharging water on the upper surface of the flange 22.
【００１４】本実施形態では、振動溶着（摩擦溶接）法
によって各フランジ２２，２３を接合させている。即
ち、図５に示すように、各フランジ２２，２３を一対の
溶着治具Ａ１，Ａ２によって挟み、各フランジ２２，２
３の接合面に適度な摩擦力を発生させた状態で溶着治具
Ａ１，Ａ２を振動させる。この振動によって各フランジ
２２，２３の接合面が相対的に往復摺動することによ
り、接合面近傍の樹脂は摩擦熱によって部分的に溶融す
る。そして、この溶融部分が再び固化することによって
各フランジ２２，２３が接合される。この際、各フラン
ジ２２，２３の接合面に形成された溝２４，２５内に溶
融した樹脂の一部が浸入する。これにより、各フランジ
２２，２３の内外側にバリが発生することを防止するこ
とができる。In this embodiment, the flanges 22 and 23 are joined by a vibration welding (friction welding) method. That is, as shown in FIG. 5, each of the flanges 22 and 23 is sandwiched between a pair of welding jigs A1 and A2.
The welding jigs A1 and A2 are vibrated in a state where an appropriate frictional force is generated on the joint surface of No. 3. Due to this vibration, the joining surfaces of the flanges 22 and 23 relatively slide back and forth, so that the resin near the joining surfaces is partially melted by frictional heat. Then, the flanges 22 and 23 are joined by solidifying the molten portion again. At this time, a part of the molten resin enters the grooves 24 and 25 formed on the joint surfaces of the flanges 22 and 23. Accordingly, it is possible to prevent burrs from being generated on the inside and outside of each of the flanges 22 and 23.
【００１５】図１〜４に示すように、分岐管１４及び集
合管１５に該当する各分割体１２，１３の外周面には縦
横に延びる複数のリブ３０，３１が形成されている。図
３及び図４に示すように、本実施形態において分岐管１
４及び集合管１５の周方向に沿って形成された横リブ３
０は２種類の異なった形状を有している。即ち、図３に
示すように、一方の横リブ３０ａは分岐管１４の外周面
全体に形成されるとともに、分岐管１４の両側からフラ
ンジ２２，２３にまで延びて形成されている。ここで、
図５に示すように、突条２６，２７と横リブ３０ａとは
接触することなく、両者２６，２７，３０ａの間には隙
間が形成されている。この隙間は後述するようにフラン
ジ２２の上面における水の移動を許容するためのもので
ある。As shown in FIGS. 1 to 4, a plurality of ribs 30, 31 extending vertically and horizontally are formed on the outer peripheral surface of each of the divided bodies 12, 13 corresponding to the branch pipe 14 and the collecting pipe 15. As shown in FIG. 3 and FIG.
4 and lateral ribs 3 formed along the circumferential direction of the collecting pipe 15
0 has two different shapes. That is, as shown in FIG. 3, one lateral rib 30 a is formed on the entire outer peripheral surface of the branch pipe 14 and extends from both sides of the branch pipe 14 to the flanges 22 and 23. here,
As shown in FIG. 5, the protrusions 26, 27 and the lateral rib 30a do not come into contact with each other, and a gap is formed between the protrusions 26, 27, and 30a. This gap is for allowing movement of water on the upper surface of the flange 22 as described later.
【００１６】これに対して、他方の横リブ３０ｂは、図
４に示すように、分岐管１４の外周面にのみ形成されて
いる。本実施形態では、これら各横リブ３０（３０ａ，
３０ｂ）が分岐管１４及び集合管１５の軸方向に所定間
隔を隔てて交互に形成されている。On the other hand, the other lateral rib 30b is formed only on the outer peripheral surface of the branch pipe 14, as shown in FIG. In the present embodiment, each of these horizontal ribs 30 (30a, 30a,
30b) are alternately formed at predetermined intervals in the axial direction of the branch pipes 14 and the collecting pipes 15.
【００１７】本実施形態では、横リブ３０を全て図３に
示す形状とすることなく、上記のように２種類の横リブ
３０を交互に設けるようにしている。従って、フランジ
２２，２３において横リブ３０ａが設けられていない領
域が大きく確保される結果、溶着治具Ａ１，Ａ２と横リ
ブ３０との干渉を極力少なくすることができる。換言す
れば、少なくとも上記横リブ３０ａは溶着治具Ａ１，Ａ
２との干渉を避け得る間隔に配設される。In the present embodiment, the two types of horizontal ribs 30 are provided alternately as described above, without forming the horizontal ribs 30 all in the shape shown in FIG. Therefore, a large area in which the lateral ribs 30a are not provided in the flanges 22 and 23 is ensured. As a result, interference between the welding jigs A1 and A2 and the lateral ribs 30 can be minimized. In other words, at least the lateral ribs 30a are connected to the welding jigs A1, A
2 are arranged at an interval capable of avoiding interference.
【００１８】分岐管１４及び集合管１５の外周面には縦
リブ３１が複数形成されている。図１に示すように、こ
れら縦リブ３１は複数の横リブ３０を連結するように形
成されている。また、上部分割体１２において各分配管
１６の下流側開口１６ａ近傍にも同様に縦リブ３１が形
成されており、この縦リブ３１は分配管１６からフラン
ジ２２にわたり形成されている。ここで、図１に示すよ
うに、分配管１６に形成された縦リブ３１はフランジ２
２の突条２６と接触しておらず、両者３１，２６の間に
は隙間が形成されている。後述するように、この隙間は
フランジ２２の上面における水の移動を許容するための
ものである。A plurality of vertical ribs 31 are formed on the outer peripheral surfaces of the branch pipe 14 and the collecting pipe 15. As shown in FIG. 1, these vertical ribs 31 are formed so as to connect a plurality of horizontal ribs 30. Similarly, a vertical rib 31 is formed near the downstream opening 16 a of each distribution pipe 16 in the upper divided body 12, and the vertical rib 31 is formed from the distribution pipe 16 to the flange 22. Here, as shown in FIG. 1, the vertical rib 31 formed on the distribution pipe 16 is
The second ridge 26 is not in contact, and a gap is formed between the two ridges 26. As will be described later, this gap is for allowing movement of water on the upper surface of the flange 22.
【００１９】以上のように構成された本実施形態におけ
る作用及び効果について以下に説明する。エンジンの運
転が開始されると、インテークマニホルド１１を通過し
て外気が燃焼室に取り込まれる。この際、インテークマ
ニホルド１１の内圧は負圧、即ち外部の大気圧よりも小
さな圧力値となっている。従って、各フランジ２２，２
３を拡開させるような力が発生することはない。The operation and effect of the embodiment constructed as described above will be described below. When the operation of the engine is started, the outside air passes through the intake manifold 11 and is taken into the combustion chamber. At this time, the internal pressure of the intake manifold 11 is a negative pressure, that is, a pressure value smaller than the outside atmospheric pressure. Therefore, each flange 22, 2
No force is generated to expand 3.
【００２０】ここで、仮にエンジンに異常燃焼が発生し
た場合を想定する。この場合、インテークマニホルド１
１の内圧が一時的に大気圧よりも増加した状態となるこ
とが考えられる。そして、内圧が増加することにより、
図５に示すように、各フランジ２２，２３の近傍には接
合部分を拡開させる力Ｆが作用する。このような力Ｆに
よって各フランジ２２，２３の近傍に弾性変形が生じた
場合、各分割体１２，１３の接合部分、即ち、各フラン
ジ２２，２３の接合部分に隙間が生じ、インテークマニ
ホルド１１内の気密性が低下してしまうことが懸念され
る。Here, it is assumed that abnormal combustion occurs in the engine. In this case, intake manifold 1
It is conceivable that the internal pressure of No. 1 temporarily becomes higher than the atmospheric pressure. And, as the internal pressure increases,
As shown in FIG. 5, a force F for expanding the joint portion acts near each of the flanges 22 and 23. When such a force F causes an elastic deformation in the vicinity of each of the flanges 22 and 23, a gap is formed at the joint between the divided bodies 12 and 13, that is, at the joint between the flanges 22 and 23. It is feared that the airtightness of the airbag will decrease.
【００２１】しかしながら、本実施形態によれば、分岐
管１４、集合管１５の外周面からフランジ２２，２３に
まで延びる横リブ３０ａによって、各フランジ２２，２
３近傍における弾性変形が抑えられる。その結果、各分
割体１２，１３の接合部分における隙間の発生を抑制す
ることができ、インテークマニホルド１１内の気密性を
向上させることができる。特に、本実施形態における横
リブ３０ａは図３に示すように、各分割体１２，１３の
周囲を囲むように全周にわたって形成されている。その
結果、増加した内圧による各管１４，１５の変形を効果
的に抑えることができる。According to the present embodiment, however, the lateral ribs 30a extending from the outer peripheral surfaces of the branch pipe 14 and the collecting pipe 15 to the flanges 22 and 23 provide the flanges 22 and 2 respectively.
Elastic deformation near 3 is suppressed. As a result, it is possible to suppress the generation of a gap at the joint between the divided bodies 12 and 13, and it is possible to improve the airtightness in the intake manifold 11. In particular, as shown in FIG. 3, the horizontal rib 30a in the present embodiment is formed over the entire circumference so as to surround the periphery of each of the divided bodies 12, 13. As a result, the deformation of each of the tubes 14, 15 due to the increased internal pressure can be effectively suppressed.
【００２２】更に、本実施形態によれば、複数の横リブ
３０及び縦リブ３１を各分割体１２，１３の外周面に形
成するようにしている。従って、インテークマニホルド
１１の重量増加を極力抑えつつ、その剛性を高めること
ができる。一般に、樹脂材料により形成されたインテー
クマニホルド１１では、金属材料により形成されたもの
よりもその剛性が低下する。このため、樹脂製インテー
クマニホルド１１では、内部の圧力脈動等を起振力とす
る振動、騒音が金属製インテークマニホルドよりも大き
くなる傾向がある。しかしながら、本実施形態によれ
ば、インテークマニホルド１１の剛性を高めることによ
り、前述したような振動、騒音の発生を抑制することが
できる。Further, according to the present embodiment, a plurality of horizontal ribs 30 and vertical ribs 31 are formed on the outer peripheral surfaces of the divided bodies 12 and 13. Accordingly, the rigidity of the intake manifold 11 can be increased while minimizing the weight increase. Generally, the rigidity of the intake manifold 11 formed of a resin material is lower than that of the intake manifold 11 formed of a metal material. For this reason, in the resin intake manifold 11, vibrations and noises generated by the internal pressure pulsation and the like as a vibrating force tend to be larger than in the metal intake manifold. However, according to the present embodiment, by increasing the rigidity of the intake manifold 11, it is possible to suppress the above-described generation of vibration and noise.
【００２３】また、本実施形態によれば、分岐管１４及
び集合管１５に設けられた横リブ３０ａ及び各分配管１
６に設けられた縦リブ３１と、突条２６との間にそれぞ
れ隙間を形成するとともに、上部分割体１２における突
条２６，２７の一部に切欠き２８を形成するようにして
いる。Further, according to the present embodiment, the lateral ribs 30a provided on the branch pipe 14 and the collecting pipe 15 and the respective distribution pipes 1 are provided.
A gap is formed between each of the vertical ribs 31 provided on the base 6 and each of the protrusions 26, and a cutout 28 is formed in a part of each of the protrusions 26 and 27 in the upper divided body 12.
【００２４】一般に、樹脂材料は水分を吸収することに
よりその剛性が低下する。従って、フランジ２２，２３
近傍が吸湿した場合には、その剛性の低下により前述し
た弾性変形量が大きくなる傾向がある。Generally, the rigidity of a resin material is reduced by absorbing moisture. Therefore, the flanges 22, 23
When moisture is absorbed in the vicinity, the elastic deformation described above tends to increase due to a decrease in the rigidity.
【００２５】この点、本実施形態によれば、上部分割体
１２のフランジ２２の表面に水が付着した場合、その水
は前記各隙間を通じて移動するとともに切欠き２８から
排出される。その結果、フランジ２２の表面上に水が停
留することが少なく、吸湿によるフランジ２２の剛性低
下を回避することができる。In this regard, according to the present embodiment, when water adheres to the surface of the flange 22 of the upper divided body 12, the water moves through the gaps and is discharged from the notch 28. As a result, water is less likely to stay on the surface of the flange 22, and a decrease in rigidity of the flange 22 due to moisture absorption can be avoided.
【００２６】本発明は以下に示す別の実施形態として具
体化することもできる。これら別の実施形態によって上
記実施形態と同様の作用効果を奏することができる。 （１）上記実施形態では、各分割体１２，１３の外周面
に複数の横リブ３０及び縦リブ３１を形成するようにし
た。これに対して、縦リブ３１を省略して横リブ３０の
みを各分割体１２，１３の外周面に形成するようにして
もよい。また、各分割体１２，１３の全周にわたり横リ
ブ３０ａを形成することなく、図６に示すように、少な
くとも分割体１２，１３の両側部からフランジ２２，２
３にわたる部分にのみ横リブ３０ａを形成するようにし
てもよい。The present invention can be embodied as another embodiment described below. According to these other embodiments, the same operation and effect as the above embodiment can be obtained. (1) In the above embodiment, a plurality of horizontal ribs 30 and vertical ribs 31 are formed on the outer peripheral surface of each of the divided bodies 12 and 13. On the other hand, the vertical ribs 31 may be omitted and only the horizontal ribs 30 may be formed on the outer peripheral surfaces of the divided bodies 12 and 13. Also, as shown in FIG. 6, the flanges 22, 2 are formed at least from both sides of the divided bodies 12, 13 without forming the horizontal ribs 30a over the entire circumference of each of the divided bodies 12, 13.
The lateral rib 30a may be formed only in a portion extending over three.
【００２７】（２）上記実施形態では、インテークマニ
ホルド１１を形成する樹脂材料としてポリアミド樹脂を
用いるようにした。これに対して、その他の樹脂材料、
例えば、ポリプロピレン、ポリエステル樹脂等を用いる
ようにしてもよい。(2) In the above embodiment, a polyamide resin is used as the resin material forming the intake manifold 11. On the other hand, other resin materials,
For example, polypropylene, polyester resin, or the like may be used.
【００２８】（３）上記実施形態では、本発明に係る樹
脂製中空体を自動車のインテークマニホルドとして具体
化するようにした。本発明はインテークマニホルドに限
定されることなく、例えば、車輌の吸気通路に設けられ
るレゾネータや、内部に高圧の流体が通過する一般の配
管等として具体化することもできる。(3) In the above embodiment, the resin hollow body according to the present invention is embodied as an intake manifold for an automobile. The present invention is not limited to the intake manifold, but may be embodied as, for example, a resonator provided in an intake passage of a vehicle or a general pipe through which a high-pressure fluid passes.
【００２９】（４）上記実施形態では、各分割体１２，
１３からフランジ２２，２３に延びる横リブ３０ａを分
岐管１４及び集合管１５にのみ形成するようにした。こ
れに対して、各分配管１６に同様の横リブ３０ａを形成
することもできる。(4) In the above embodiment, each divided body 12,
Lateral ribs 30a extending from 13 to the flanges 22 and 23 are formed only on the branch pipe 14 and the collecting pipe 15. On the other hand, a similar lateral rib 30a can be formed in each distribution pipe 16.
【００３０】（５）上記各実施形態では、各分割体１
２，１３の外周面に横リブ３０ａ，３０ｂを交互に形成
するようにした。これに対して、横リブ３０ａが前述し
たように、溶着治具Ａ１，Ａ２との干渉を避け得る間隔
にて配設されさえすれば、横リブ３０ｂはその間に２
つ、或いはそれ以上配設される構造であってもよい。こ
のような構成によれば、上記インテークマニホルド１１
としての特徴を維持しつつ、その剛性の更なる向上を図
る上で有効である。(5) In each of the above embodiments, each divided body 1
Lateral ribs 30a and 30b are alternately formed on the outer peripheral surfaces of the second and the third. On the other hand, as long as the horizontal ribs 30a are arranged at intervals that can avoid interference with the welding jigs A1 and A2, as described above, the horizontal ribs 30b will
One or more structures may be provided. According to such a configuration, the intake manifold 11
It is effective in further improving the rigidity while maintaining the characteristics as described above.
【００３１】（６）上記実施形態では、各フランジ２
２，２３を振動溶着法によって接合するようにした。こ
れに対して、各フランジ２２，２３を接着剤により接合
するようにしてもよい。 上記実施形態から把握できる技術的思想についてその効
果とともに以下に記載する。(6) In the above embodiment, each flange 2
2 and 23 were joined by a vibration welding method. On the other hand, the flanges 22 and 23 may be joined by an adhesive. The technical ideas that can be grasped from the above embodiment are described below together with their effects.
【００３２】（イ）請求項１記載の樹脂製中空体におい
て、前記リブは前記各分割体を囲むように全周にわたっ
て形成されていることを特徴とする。上記構成によれ
ば、内圧の増加に起因した中空体の変形を効果的に抑制
することができる。(A) In the resin hollow body according to the first aspect, the rib is formed over the entire circumference so as to surround each of the divided bodies. According to the above configuration, it is possible to effectively suppress the deformation of the hollow body caused by the increase in the internal pressure.
【００３３】（ロ）請求項１記載の樹脂製中空体におい
て、前記リブは前記樹脂製中空体野軸方向に適宜の間隔
をもって配設され、それらリブの間には前記張出部に達
しないリブが併せ形成されたことを特徴とする。(B) In the resin hollow body according to claim 1, the ribs are arranged at appropriate intervals in the axial direction of the resin hollow body, and the ribs do not reach the overhang. The rib is formed together.
【００３４】上記構成によれば、張出部の吸湿の緩和、
並びに樹脂製中空体の剛性の向上を図ることができる。[0034] According to the above configuration, the moisture absorption of the overhang portion is reduced,
In addition, the rigidity of the resin hollow body can be improved.
【００３５】[0035]
【発明の効果】本発明では、複数に分割された分割体を
当該分割体に形成された張出部にて接合してなる樹脂製
中空体において、分割体の外表面に少なくとも周方向
に、当該分割体から張出部にまで延設されたリブを形成
するようにしている。従って、このリブによって、中空
体の内圧増加に伴う各張出部近傍の弾性変形が抑えられ
る。その結果、各分割体の接合部分における拡開を抑制
することができ、中空体内部の気密性を向上させること
ができる。According to the present invention, in a resin hollow body formed by joining a plurality of divided bodies at overhangs formed in the divided body, at least a circumferential direction is formed on an outer surface of the divided body. A rib extending from the divided body to the overhang is formed. Therefore, the ribs suppress elastic deformation in the vicinity of each projecting portion due to an increase in the internal pressure of the hollow body. As a result, it is possible to suppress the expansion at the joint portion of each divided body, and it is possible to improve the airtightness inside the hollow body.
【図１】インテークマニホルドの平面図。FIG. 1 is a plan view of an intake manifold.
【図２】インテークマニホルドの側面図。FIG. 2 is a side view of the intake manifold.
【図３】図１の３−３線断面図。FIG. 3 is a sectional view taken along line 3-3 in FIG. 1;
【図４】図１の４−４線断面図。FIG. 4 is a sectional view taken along line 4-4 of FIG. 1;
【図５】フランジ等を示す拡大断面図。FIG. 5 is an enlarged sectional view showing a flange and the like.
【図６】別の実施形態におけるフランジ等を示す拡大断
面図FIG. 6 is an enlarged sectional view showing a flange and the like in another embodiment.
【図７】従来の技術における樹脂インレットを示す断面
図。FIG. 7 is a sectional view showing a resin inlet according to a conventional technique.
【図８】従来の技術における樹脂製中空体を示す断面
図。FIG. 8 is a sectional view showing a resin hollow body according to a conventional technique.
１１…樹脂製中空体としてのインテークマニホルド、１
２…上部分割体、１３…下部分割体、２２，２３…フラ
ンジ、３０（３０ａ，３０ｂ）…横リブ、３１縦リブ。11 ... intake manifold as resin hollow body, 1
2 Upper split body, 13 Lower split body, 22 and 23 Flange, 30 (30a, 30b) Horizontal rib, 31 vertical rib.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ２９Ｌ 31:30 31:60 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code Agency reference number FI Technical display location B29L 31:30 31:60
Claims (1)
あって、複数に分割された分割体を当該分割体に形成さ
れた張出部にて接合してなる樹脂製中空体において、 前記分割体の外表面の少なくとも周方向に、同分割体か
ら前記張出部にまで延設されたリブを備えたことを特徴
とする樹脂製中空体。1. A resin hollow body in which fluid pressure acts inside, wherein a plurality of divided bodies are joined at an overhang formed in the divided body. A resin hollow body comprising a rib extending from the divided body to the overhanging portion at least in a circumferential direction on an outer surface of the divided body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23035996A JP3218985B2 (en) | 1996-08-30 | 1996-08-30 | Resin hollow body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23035996A JP3218985B2 (en) | 1996-08-30 | 1996-08-30 | Resin hollow body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1077917A true JPH1077917A (en) | 1998-03-24 |
| JP3218985B2 JP3218985B2 (en) | 2001-10-15 |
Family
ID=16906630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23035996A Expired - Fee Related JP3218985B2 (en) | 1996-08-30 | 1996-08-30 | Resin hollow body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3218985B2 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001201160A (en) * | 2000-01-19 | 2001-07-27 | Inoac Corp | Duct having ribs and method for manufacturing the same |
| EP1264982A1 (en) * | 2001-06-04 | 2002-12-11 | Keihin Corporation | Intake manifold |
| JP2005067208A (en) * | 2004-10-13 | 2005-03-17 | Toyota Motor Corp | Resin molded article |
| WO2006046102A3 (en) * | 2004-10-27 | 2006-08-24 | Toyota Motor Co Ltd | Welding structure for synthetic resin intake manifold |
| KR100808355B1 (en) | 2001-04-04 | 2008-02-27 | 다우 글로벌 테크놀로지스 인크. | Adhesively bonded engine intake manifold assembly |
| JP2009066819A (en) * | 2007-09-11 | 2009-04-02 | Aisan Ind Co Ltd | Resin molded body |
| JP2010265871A (en) * | 2009-05-18 | 2010-11-25 | Aisan Ind Co Ltd | Intake manifold |
| JP2013155683A (en) * | 2012-01-31 | 2013-08-15 | Fuji Heavy Ind Ltd | Resin intake manifold |
| US8511289B2 (en) | 2009-05-18 | 2013-08-20 | Aisan Kogyo Kabushiki Kaisha | Intake manifolds |
| CN106881870A (en) * | 2015-10-22 | 2017-06-23 | 丰田自动车株式会社 | The manufacture method of union body |
| JP2018162760A (en) * | 2017-03-27 | 2018-10-18 | 本田技研工業株式会社 | Intake passage structure |
-
1996
- 1996-08-30 JP JP23035996A patent/JP3218985B2/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001201160A (en) * | 2000-01-19 | 2001-07-27 | Inoac Corp | Duct having ribs and method for manufacturing the same |
| KR100808355B1 (en) | 2001-04-04 | 2008-02-27 | 다우 글로벌 테크놀로지스 인크. | Adhesively bonded engine intake manifold assembly |
| EP1264982A1 (en) * | 2001-06-04 | 2002-12-11 | Keihin Corporation | Intake manifold |
| JP2005067208A (en) * | 2004-10-13 | 2005-03-17 | Toyota Motor Corp | Resin molded article |
| WO2006046102A3 (en) * | 2004-10-27 | 2006-08-24 | Toyota Motor Co Ltd | Welding structure for synthetic resin intake manifold |
| US7174873B2 (en) | 2004-10-27 | 2007-02-13 | Toyota Jidosha Kabushiki Kaisha | Welding structure for synthetic resin intake manifold |
| JP2009066819A (en) * | 2007-09-11 | 2009-04-02 | Aisan Ind Co Ltd | Resin molded body |
| JP2010265871A (en) * | 2009-05-18 | 2010-11-25 | Aisan Ind Co Ltd | Intake manifold |
| US8511289B2 (en) | 2009-05-18 | 2013-08-20 | Aisan Kogyo Kabushiki Kaisha | Intake manifolds |
| JP2013155683A (en) * | 2012-01-31 | 2013-08-15 | Fuji Heavy Ind Ltd | Resin intake manifold |
| CN106881870A (en) * | 2015-10-22 | 2017-06-23 | 丰田自动车株式会社 | The manufacture method of union body |
| CN106881870B (en) * | 2015-10-22 | 2020-11-06 | 丰田自动车株式会社 | Method for manufacturing connected body |
| JP2018162760A (en) * | 2017-03-27 | 2018-10-18 | 本田技研工業株式会社 | Intake passage structure |
| US11053896B2 (en) | 2017-03-27 | 2021-07-06 | Honda Motor Co., Ltd. | Intake passage structure |
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|---|---|
| JP3218985B2 (en) | 2001-10-15 |
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