JP2655959B2 - Plastic fuel tank - Google Patents

Plastic fuel tank

Info

Publication number
JP2655959B2
JP2655959B2 JP3311807A JP31180791A JP2655959B2 JP 2655959 B2 JP2655959 B2 JP 2655959B2 JP 3311807 A JP3311807 A JP 3311807A JP 31180791 A JP31180791 A JP 31180791A JP 2655959 B2 JP2655959 B2 JP 2655959B2
Authority
JP
Japan
Prior art keywords
tank body
opening
tank
barrier layer
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.)
Expired - Fee Related
Application number
JP3311807A
Other languages
Japanese (ja)
Other versions
JPH05116548A (en
Inventor
弘己 北山
登志夫 山際
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP3311807A priority Critical patent/JP2655959B2/en
Priority to TW81106724A priority patent/TW200426B/en
Priority to KR1019920015913A priority patent/KR950004306B1/en
Publication of JPH05116548A publication Critical patent/JPH05116548A/en
Application granted granted Critical
Publication of JP2655959B2 publication Critical patent/JP2655959B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • 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
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • 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
    • 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
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
    • B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
    • 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
    • B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
    • 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
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5324—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length
    • B29C66/53245—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow
    • B29C66/53246—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow said single elements being spouts, e.g. joining spouts to containers
    • B29C66/53247—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow said single elements being spouts, e.g. joining spouts to containers said spouts comprising flanges
    • 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
    • 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
    • B29C66/72—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 structure of the material of the parts to be joined
    • B29C66/723—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 structure of the material of the parts to be joined being multi-layered
    • 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
    • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • 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
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7172—Fuel tanks, jerry cans

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Laminated Bodies (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【産業上の利用分野】本発明は、壁に内蔵したバリヤ層
によって貯溜燃料の透過を防止した樹脂製燃料タンクに
関し、特に、樹脂製の鍔付き筒状部材の取付け性を改良
した樹脂製燃料タンクに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin fuel tank in which stored fuel is prevented from penetrating by a barrier layer built in a wall, and more particularly, to a resin fuel tank in which the attachment of a resin-made flanged tubular member is improved. About the tank.

【０００２】[0002]

【従来の技術】樹脂製燃料タンクのタンク本体をブロー
成形する時に、ナイロン等を接着剤とともに層状にブレ
ンドしてタンク本体壁中にバリヤ層を形成することによ
り、タンク本体壁からの貯溜燃料の透過を防止する技術
（例えば、特開昭６３−２４２７２２号公報等）が一般
に知られている。2. Description of the Related Art When a tank body of a resin fuel tank is blow molded, nylon or the like is layered together with an adhesive to form a barrier layer in the tank body wall, so that the stored fuel from the tank body wall can be formed. Techniques for preventing transmission (for example, JP-A-63-242722) are generally known.

【０００３】[0003]

【発明が解決しようとする課題】前記特開昭６３−２４
２７２２号公報の第１図によれば、開口部３は燃料タン
ク本体２と一体形成されているが、開口部３の位置が型
割り面に限定されるなど、位置的に制限される。また、
ブロー成形法で寸法精度のよい開口部３を同時に形成す
ることは、高度な技術が必要となる。そこで、燃料タン
ク本体をブロー成形し、後加工で開口を設け、筒状部材
を取付ける製法が考えられる。後述の表１の構成Ｎｏ．
３の略図に示すとおりに、タンク本体Ａに筒状部材Ｂを
当てて相互を融着する製法である。しかしながら、バリ
ヤ層が接合面に露出介在すると溶着強度が低下すること
及びタンク本体Ａに細かな筋で示したバリヤ層と筒状部
材との溶着融合性が良くないという不都合もある。更に
は、タンク本体Ａがそれ程厚くないので、筒状部材を押
し当てる際に、その加圧力でタンク本体Ａ側が撓み、所
定の当接状態が確保できない虞れもある。即ち、タンク
本体に筒状部材を後から付ける場合に、溶着強度の確
保、取付けの際の撓み対策が課題となる。SUMMARY OF THE INVENTION The above-mentioned JP-A-63-24
According to FIG. 2 of Japanese Patent No. 2722, the opening 3 is formed integrally with the fuel tank main body 2, but the position is restricted such that the position of the opening 3 is limited to the mold surface. Also,
Forming the openings 3 with good dimensional accuracy at the same time by a blow molding method requires advanced technology. Therefore, a manufacturing method in which the fuel tank body is blow-molded, an opening is provided by post-processing, and a cylindrical member is attached is considered. The configuration No. of Table 1 described later.
As shown in the schematic diagram of FIG. 3, a cylindrical member B is applied to the tank body A to fuse them together. However, when the barrier layer is exposed and interposed on the joint surface, there are disadvantages that the welding strength is reduced and that the fusion fusion between the barrier layer and the cylindrical member, which is indicated by fine streaks on the tank body A, is not good. Further, since the tank body A is not so thick, when the cylindrical member is pressed, the tank body A side may be bent by the applied pressure, and a predetermined contact state may not be secured. That is, when the tubular member is attached to the tank body later, it is necessary to ensure the welding strength and to prevent the deflection at the time of attachment.

【０００４】[0004]

【課題を解決するための手段】上記課題を解決するため
に本発明は、壁に燃料の透過を防止するためのナイロン
等のバリヤ層を内蔵した樹脂製のタンク本体に、開口を
設け、この開口に樹脂製の鍔付き筒状部材を取付け、そ
れの鍔を前記バリヤ層に平行なタンク本体外表面に当接
して溶着してなる燃料タンクであって、タンク本体の前
記鍔部が当接される当接面の外側に屈曲部を形成するこ
とにより、開口付近の曲げ剛性を高めた形状にしたこと
を特徴とする。前記鍔がタンク本体に当接するときの鍔
側の接合面又はタンク本体側接合面に、筒部材又は開口
を囲う環状の凸部を突設しておき、この凸部を溶着の始
点にして鍔をタンク本体に溶着することが望ましい。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an opening in a resin tank body having a barrier layer made of nylon or the like for preventing fuel permeation in a wall. A fuel tank in which a resin-made flanged tubular member is attached to the opening, and the flange is brought into contact with and welded to the outer surface of the tank body parallel to the barrier layer. A bent portion is formed outside the abutting surface to increase the bending rigidity near the opening. An annular convex portion surrounding the cylindrical member or the opening is projected from the joining surface on the flange side or the joining surface on the tank body side when the flange comes into contact with the tank main body, and this convex portion is used as a starting point of welding to form a flange. Is desirably welded to the tank body.

【０００５】[0005]

【作用】タンク本体の外表面に筒状部材の鍔を当接した
ので、接合面にはバリヤ層が介在することがなく、接合
面が溶融一体化されて接合強度が確保される。鍔をタン
ク本体の外表面に押しつけると、開口を囲う壁がタンク
本体内方へ撓む虞れがある。しかし、開口の当接面の外
側に屈曲部を形成して開口付近の曲げ剛性を高めた形状
としたので、その心配はない。更に、筒部材又は開口を
囲う環状の凸部を突設したので、この凸部に十分な加圧
力が掛かり容易に融着が進む。そして、凸部が融着の始
点となるから全体的に融着が良好となる。凸部はシール
性を高める効果も発揮する。Since the flange of the cylindrical member is in contact with the outer surface of the tank body, no barrier layer is interposed on the joint surface, and the joint surface is melted and integrated to ensure joint strength. If the flange is pressed against the outer surface of the tank body, the wall surrounding the opening may be bent inward of the tank body. However, since there is a bent portion formed outside the contact surface of the opening to increase the bending stiffness near the opening, there is no concern about that. Further, since the annular convex portion surrounding the cylindrical member or the opening is protruded, a sufficient pressing force is applied to the convex portion to facilitate the fusion. Then, since the projection is the starting point of the fusion, the fusion is generally good. The convex portion also exerts an effect of improving the sealing property.

【０００６】[0006]

【実施例】発明の実施例を添付図面に基づいて以下に説
明する。図１は第１実施例（Ａ）および第２実施例
（Ｂ）に係る要部断面図、図２は燃料タンクを装架した
部分を示す自動二輪車の部分側面図、図３は実施例に係
る燃料タンクの上面図、図４は同燃料タンクの側面図、
図５は図３のＡ−Ａ線断面図、図６は図３のＢ−Ｂ線断
面図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a sectional view of a main part according to a first embodiment (A) and a second embodiment (B) , FIG. 2 is a partial side view of a motorcycle showing a portion where a fuel tank is mounted, and FIG. Top view of such a fuel tank, FIG . 4 is a side view of the fuel tank,
Figure 5 is a sectional view along line A-A of FIG. 3, FIG. 6 is a sectional view taken along line B-B of FIG.

【０００７】図２において、二輪スクータ１は、足置き
部のフロアプレート１ａとアンダーカバー１ｂとの間に
樹脂製燃料タンク２を備え、送出口４からパイプ４１が
ポンプ４２を経由して後方のキャブレタ４３に接続し、
エアクリーナ４４からの空気と共にエンジン４５に至
る。樹脂製燃料タンク２は、車体枠をなすメインフレー
ム１ｃにブラケット１ｄ，１ｄを介して固定される。In FIG . 2 , the two-wheeled scooter 1 is provided with a resin fuel tank 2 between a floor plate 1a of a footrest portion and an under cover 1b. Connect to carburetor 43,
The air reaches the engine 45 together with the air from the air cleaner 44. The resin fuel tank 2 is fixed to a main frame 1c forming a vehicle body frame via brackets 1d, 1d.

【０００８】図３および図４において、樹脂製燃料タン
ク２は、高密度ポリエチレン製のタンク本体２ａと、こ
のタンク本体２ａの開口に溶着接合され、タンク本体２
ａと同質樹脂製の成形体でなる鍔付き筒状部材（燃料注
入口３、燃料送出口４、液面計５等）から構成される。In FIGS. 3 and 4 , a resin fuel tank 2 is welded to a tank body 2a made of high-density polyethylene and is welded to an opening of the tank body 2a.
It is composed of a tubular member with a flange (a fuel inlet 3, a fuel outlet 4, a liquid level meter 5, etc.) formed of a molded article made of the same resin as that of a.

【０００９】タンク本体２ａには、燃料の透過防止のた
めに、ナイロン等を接着剤とともにブレンドしてブロー
成形を行い、タンク本体壁中にバリヤ層を形成する。成
形されたタンク本体２ａの周縁部は取付け用のフランジ
２ｂをなす。The tank body 2a is blow-molded by blending nylon or the like with an adhesive to prevent fuel permeation to form a barrier layer in the tank body wall. The peripheral edge of the molded tank body 2a forms a mounting flange 2b.

【００１０】鍔付き筒状部材（燃料注入口）３は、詳細
には、図５に示す如く、その鍔部３ｃの外側に段をなす
屈曲部２ｃを配した開口２ｄに設けられ、雌ねじ３ａを
形成した樹脂製の成形体である。この鍔付き筒状部材３
は、その円筒部３ｂをタンク本体２ａの開口２ｄに嵌入
し、鍔３ｃをタンク本体２ａの開口２ｃ周縁のタンク本
体壁面に溶着する。雌ねじ３ａには、図示せぬ口蓋が開
閉自在に螺合する。孔３ｄはエア抜きである。As shown in detail in FIG. 5 , a flanged cylindrical member (fuel inlet) 3 is provided in an opening 2d in which a stepped bent portion 2c is arranged outside the flange portion 3c, and a female screw 3a is provided. Is a resin-made molded article formed with This flanged tubular member 3
The cylindrical portion 3b is fitted into the opening 2d of the tank body 2a, and the flange 3c is welded to the tank body wall around the opening 2c of the tank body 2a. A palate (not shown) is screwed into the female screw 3a so as to be freely opened and closed. The holes 3d are vented.

【００１１】鍔付き筒状部材（燃料送出口）４は、詳細
には図６に示す如く、その外側に屈曲部２ｃを配した開
口２ｆ部に設けられ、Ｌ型の樹脂製の成形体である。こ
の鍔付き筒状部材は、タンク本体２ａの開口２ｆに嵌入
し、鍔４ａをタンク本体２ａの開口２ｆ周縁のタンク本
体壁面に溶着する。筒体４ｂの下端はタンクの底の凹部
２ｇに臨み、また、筒体４ｂの上端は、タンク本体２ａ
の上面に平行に折れて逆Ｌ字をなし、図示せぬ燃料パイ
プを連結する。As shown in detail in FIG. 6 , a flanged tubular member (fuel outlet) 4 is provided in an opening 2f having a bent portion 2c on the outside thereof, and is an L-shaped resin molded body. is there. The flanged tubular member fits into the opening 2f of the tank body 2a, and welds the flange 4a to the tank body wall around the opening 2f of the tank body 2a. The lower end of the cylinder 4b faces the recess 2g at the bottom of the tank, and the upper end of the cylinder 4b is
Is bent in parallel to the upper surface of the, forming an inverted L-shape, and connects a fuel pipe (not shown).

【００１２】鍔付き筒状部材（液面計）５は、図４のタ
ンク本体２ａの上面に形成した凹部２ｈに位置する開口
２ｉの周縁に溶着にて取り付けられる。鍔５ａを備えた
鍔付き筒状部材５は、液面の位置に応じて上下するフロ
ート５ｂを備え、このフロート５ｂの位置に対応して図
示せぬメーターパネルのインジケータによってタンク内
の燃料貯溜量を表示する。[0012] flanged tubular member (liquid level meter) 5 is mounted by welding to the periphery of the opening 2i located in a recess 2h formed on the upper surface of the tank main body 2a of FIG. The flanged tubular member 5 having the flange 5a has a float 5b that moves up and down in accordance with the position of the liquid level, and the fuel storage amount in the tank is determined by an indicator on a meter panel (not shown) corresponding to the position of the float 5b. Is displayed.

【００１３】図１において、タンク本体２ａの成形表面
をなすタンク本体壁上に鍔付き筒状部材３，４を溶着接
合する。タンク本体壁内のバリヤ層２ｊは、タンク本体
２ａをブロー成形した時に、ブレンドされたナイロン等
によってタンク本体壁に平行に層状に形成され、貯溜燃
料がタンク本体壁を透過するのを防止する。In FIG. 1, flanged tubular members 3 and 4 are welded and joined to a tank body wall which forms a molding surface of a tank body 2a. When the tank body 2a is blow-molded, the barrier layer 2j in the tank body wall is formed in a layered manner in parallel with the tank body wall by blended nylon or the like to prevent the stored fuel from passing through the tank body wall.

【００１４】タンク本体２ａと鍔付き筒状部材３，４の
接合部の外側には、溶着時の加圧力を支えるに足る剛性
を備えた屈曲部２ｃを配設する。この屈曲部の形状は、
同図（Ａ）のタンク本体２ａの端部周壁や、同図（Ｂ）
の独立した屈曲部等として構成する。Outside the joint between the tank body 2a and the flanged tubular members 3 and 4, there is provided a bent portion 2c having sufficient rigidity to support the pressing force during welding. The shape of this bend is
The peripheral wall at the end of the tank body 2a in FIG.
Are configured as independent bent portions.

【００１５】タンク本体２ａの壁面と鍔付き筒状部材
３，４とが当接する接合部には、環状に凸部２ｅ，４ｃ
を予め突設する。この環状の凸部２ｅ，４ｃは、溶着圧
力によって凸部の頂部の面圧が高くなり、溶着が容易に
なるとともにシール機能をなす。At the joint where the wall surface of the tank body 2a abuts against the flanged cylindrical members 3 and 4, annular protrusions 2e and 4c are provided.
Is provided in advance. The annular convex portions 2e and 4c increase the surface pressure at the top of the convex portion due to the welding pressure, thereby facilitating welding and performing a sealing function.

【００１６】接合部の環状の凸部２ｅ，４ｃは、タンク
本体２ａ側の接合面または鍔３ｃ，４ａ側の接合面の一
方またはそれぞれに同心状に複数を設けても良い。A plurality of annular convex portions 2e and 4c of the joint may be provided concentrically on one or each of the joint surface on the tank body 2a side and the joint surface on the flanges 3c and 4a side.

【００１７】タンク本体のブロー成形手順は、押出機
が、溶融した高密度ポリエチレンと変性ナイロンと接着
剤とをブレンドしたブレンド体をリング状の押出し口か
ら筒状に金型内に押し込み、同時に、エアノズルが金型
の下部または側部から筒状をなすブレンド体の中心に空
気を送り込み、この空気の圧力によって筒状のブレンド
体は膨らみ、金型によって成形がなされる。In the blow molding procedure of the tank body, the extruder pushes a blended product obtained by blending the molten high-density polyethylene, modified nylon and the adhesive into a mold from a ring-shaped extrusion port into a cylindrical shape. The air nozzle feeds air from the bottom or side of the mold to the center of the cylindrical blend, and the pressure of the air causes the cylindrical blend to expand, and is formed by the mold.

【００１８】こうして成形されたタンク本体には、押出
機から押し出された方向に、すなわち、タンク本体壁表
面に平行に変性ナイロンが層状に形成され、この層状の
ナイロンが燃料の透過を防止するバリヤ層をなす。成形
されたタンク本体は、図１の実施例（Ａ）（Ｂ）におい
ては、所定位置に穴開けされてから、タンク本体と鍔付
き筒状部材の両接合部を熱板によって所定の温度、時間
で溶融加熱の後、所定の圧力、時間で圧接され、鍔付き
筒状部材が溶着接合される。In the tank body thus formed, denatured nylon is formed in a layer in a direction extruded from the extruder, that is, in parallel with the wall surface of the tank body, and the layered nylon is a barrier for preventing fuel permeation. Make layers. In the embodiments (A) and (B) of FIG. 1, the formed tank main body is perforated at a predetermined position, and then both joints of the tank main body and the flanged tubular member are heated to a predetermined temperature by a hot plate. After the melting and heating for a certain time, the members are pressed against each other at a predetermined pressure and for a certain time, and the flanged tubular member is welded and joined.

【００１９】表１は、溶着部の接合強度の比較を示す。
Ａ部材の端面をＢ部材の側面に溶着した時の接合の組合
せにおいて、バリヤ層を含まない樹脂製燃料タンクとし
ての接合強度を基準として比較し、下記の結果を得た。Table 1 shows a comparison of the joining strength of the welded portions.
In the combination of the joining when the end surface of the member A was welded to the side surface of the member B, a comparison was made based on the joining strength of the resin fuel tank not including the barrier layer, and the following results were obtained.

【００２０】Ａ，Ｂ共に高密度ポリエチレン（ＨＤＰ
Ｅ）をベースにバリヤ層を含まない第１の構成と、一方
がバリヤ層を含む部材とし、このバリヤ層を含む部材の
側面で溶着した第２の構成と、バリヤ層を含む部材のバ
リヤ層と直交する端面で溶着した第３の構成とを比較す
ると、熱板溶融条件は２００度Ｃ、６０秒（表中＊で示
す。）のとき、バリヤ層を含む構成においては、第２の
構成について所定の強度が得られることが分かる。A and B are both high-density polyethylene (HDP
A first configuration not including a barrier layer based on E), a second configuration in which one is a member including the barrier layer and welded on the side surface of the member including the barrier layer, and a barrier layer of the member including the barrier layer When the hot plate melting condition is 200 ° C. and 60 seconds (indicated by * in the table), the second configuration is included in the configuration including the barrier layer. It can be seen that a predetermined strength can be obtained for.

【００２１】この結果により、バリヤ層に直交する方向
に接合した第３の構成は、接合面に露出しているバリヤ
層の影響を受けることが推定される。また、第２の構成
においても、熱板溶融条件を高温、長時間にした場合に
は接合強度の低下が見られ、これは溶融の進行によっ
て、バリヤ層が接合面に露出した結果として、第２のケ
ースと同じ現象によるものと推定される。From these results, it is presumed that the third structure joined in the direction perpendicular to the barrier layer is affected by the barrier layer exposed on the joint surface. Also, in the second configuration, when the hot plate melting condition is set to a high temperature for a long time, the bonding strength is reduced. This is because the progress of the melting exposes the barrier layer to the bonding surface. It is presumed to be due to the same phenomenon as in case 2.

【００２２】なお、上記バリヤ層を含む部材は、バリヤ
層が部材側面に平行に形成されたものであり、そのバリ
ヤ層の方向は、接合試料を切断し、この切断面に露出し
たナイロン部分を染色することにより目視確認されたも
のである。In the member including the barrier layer, the barrier layer is formed parallel to the side surface of the member, and the direction of the barrier layer is determined by cutting the joint sample and removing the nylon portion exposed on the cut surface. It was visually confirmed by staining.

【００２３】[0023]

【表１】 [Table 1]

【００２４】[0024]

【発明の効果】以上に説明したごとく、タンク本体の外
表面に筒状部材の鍔を当接したので、接合面にはバリヤ
層が介在することがなく、接合面が溶融一体化されて接
合強度が確保される。鍔をタンク本体の外表面に押しつ
けると、開口を囲う壁がタンク本体内方へ撓む虞れがあ
る。しかし、鍔部が当接される当接面の外側に屈曲部を
形成して開口付近の曲げ剛性を高めた形状としたので、
その心配はない。As described above, since the flange of the cylindrical member abuts on the outer surface of the tank body, no barrier layer is interposed on the joining surface, and the joining surface is melted and integrated to join. Strength is ensured. If the flange is pressed against the outer surface of the tank body, the wall surrounding the opening may be bent inward of the tank body. However, since the bent portion is formed outside the contact surface where the flange portion contacts, the shape is increased in bending rigidity near the opening,
Don't worry about that.

【００２５】更に、筒部材又は開口を囲う環状の凸部を
突設したので、この凸部に十分な加圧力が掛かり容易に
融着が進む。そして、凸部が融着の始点となるから全体
的に融着が良好となる。凸部はシール性を高める効果も
発揮する。Further, since the annular convex portion surrounding the cylindrical member or the opening is protruded, a sufficient pressing force is applied to the convex portion to facilitate the fusion. Then, since the projection is the starting point of the fusion, the fusion is generally good. The convex portion also exerts an effect of improving the sealing property.

【図面の簡単な説明】[Brief description of the drawings]

【図１】第１実施例（Ａ）および第２実施例（Ｂ）に係
る要部断面図FIG. 1 is a sectional view of a main part according to a first embodiment (A) and a second embodiment (B).

【図２】燃料タンクを装架した部分を示す自動二輪車の
部分側面図 FIG. 2 shows a motorcycle in which a fuel tank is mounted .
Partial side view

【図３】実施例に係る燃料タンクの上面図 FIG. 3 is a top view of the fuel tank according to the embodiment.

【図４】同燃料タンクの側面図 FIG. 4 is a side view of the fuel tank.

【図５】図３のＡ−Ａ線断面図 FIG. 5 is a sectional view taken along line AA of FIG . 3;

【図６】図３のＢ−Ｂ線断面図 FIG. 6 is a sectional view taken along line BB of FIG . 3;

【符号の説明】[Explanation of symbols]

２…樹脂製燃料タンク、２ａ…タンク本体、２ｃ，２ｈ
…屈曲部、２ｅ，４ｃ…凸部、２ｊ…バリヤ層、３，
４，５…鍔付き筒状部材、３ｃ，４ａ，５ａ…鍔。2 ... Resin fuel tank, 2a ... Tank body, 2c, 2h
.., Bent portions, 2e, 4c, convex portions, 2j, barrier layers ,
4 , 5 ... a flanged cylindrical member, 3c, 4a, 5a ... a flange.

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 壁に燃料の透過を防止するためのナイロ
ン等のバリヤ層を内蔵した樹脂製のタンク本体に、開口
を設け、この開口に樹脂製の鍔付き筒状部材を取付け、
それの鍔を前記バリヤ層に平行なタンク本体外表面に当
接して溶着してなる燃料タンクであって、タンク本体の
前記鍔部が当接される当接面の外側に屈曲部を形成する
ことにより、開口付近の曲げ剛性を高めた形状にしたこ
とを特徴とする樹脂製燃料タンク。An opening is provided in a resin tank main body having a barrier layer made of nylon or the like for preventing fuel permeation in a wall, and a resin-made flanged cylindrical member is attached to the opening.
A fuel tank formed by abutting and welding a flange thereof to an outer surface of a tank body parallel to the barrier layer, wherein a bent portion is formed outside a contact surface of the tank body with which the flange is abutted. A resin fuel tank characterized by having a shape with increased bending stiffness near the opening.
JP3311807A 1991-10-30 1991-10-30 Plastic fuel tank Expired - Fee Related JP2655959B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP3311807A JP2655959B2 (en) 1991-10-30 1991-10-30 Plastic fuel tank
TW81106724A TW200426B (en) 1991-10-30 1992-08-26 Fuel tank made of resin
KR1019920015913A KR950004306B1 (en) 1991-10-30 1992-09-02 Feul tank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3311807A JP2655959B2 (en) 1991-10-30 1991-10-30 Plastic fuel tank

Publications (2)

Publication Number Publication Date
JPH05116548A JPH05116548A (en) 1993-05-14
JP2655959B2 true JP2655959B2 (en) 1997-09-24

Family

ID=18021667

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3311807A Expired - Fee Related JP2655959B2 (en) 1991-10-30 1991-10-30 Plastic fuel tank

Country Status (1)

Country Link
JP (1) JP2655959B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1012907A3 (en) * 1999-09-22 2001-05-08 Solvay System and process for blanking off an opening in a tank
JP4688275B2 (en) * 2000-11-02 2011-05-25 株式会社ニフコ Fuel tank connector
US7704440B2 (en) * 2003-12-02 2010-04-27 Ti Group Automotive Systems, L.L.C. Fuel system component and method of manufacture

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0641886B2 (en) * 1985-10-07 1994-06-01 アンリツ株式会社 SAW force sensor
JPS6294363A (en) * 1985-10-21 1987-04-30 Sharp Corp Transfer type thermal color recording apparatus
JPS63242722A (en) * 1987-03-31 1988-10-07 Yamakawa Kogyo Kk Resin molded body structure for automobile fuel tank
JPH0720355Y2 (en) * 1987-07-01 1995-05-15 日産自動車株式会社 Exhaust throttle device

Also Published As

Publication number Publication date
JPH05116548A (en) 1993-05-14

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