JPS601043B2 - Manufacturing method of fuel filter - Google Patents

Description

【発明の詳細な説明】 本発明は内燃機関に用いられるプラスチック製燃料フィ
ル夕の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a plastic fuel filter for use in internal combustion engines.

燃料フィル夕はガソリン、軽油を炉遇するためのもので
あるから、そのケーシングの材質として耐燃料油性のプ
ラスチック材を用いなければならないし、又燃料フィル
夕にシール洩れがあってはならないものである。Since the fuel filter is used to treat gasoline and diesel oil, its casing must be made of fuel oil-resistant plastic material, and the fuel filter must not have any seal leakage. be.

そして燃料フィル夕は入口パイプを有するケーシングと
出口パイプを有するカバーを固着して成るハウジング内
に炉過体を配設したもので、ケーシングとカバーの固着
手段として接着剤を用いて固着シールする方法と、熱板
で加熱し溶着シールする方法と、振動溶着装層やスピン
溶着装直等の加圧溶着装暦を用いて溶着シールする方法
とが利用されている。燃料フィル夕は取付位置の関係か
らカバーに設けた出口パイプを実関昭５２−４７３７２
号公報のようにカバー端面に垂直に設けたものと、第１
図あるいは特公昭５２一４４６６２号公報のようにカバ
ー端面と水平に設けたものとがある。The fuel filter consists of a casing that has an inlet pipe and a cover that has an outlet pipe that are fixed together, and a furnace body that is placed inside the housing.The casing and the cover are fixed together using an adhesive. A method of welding and sealing by heating with a hot plate, and a method of welding and sealing using a pressure welding method such as vibration welding layer or spin welding are used. Due to the mounting position of the fuel filter, the outlet pipe installed on the cover was installed using the actual Seki Sho 52-47372.
The one provided perpendicularly to the end surface of the cover as in the first publication, and the first
As shown in the figure or in Japanese Patent Publication No. 52-44662, there is one that is provided horizontally to the end surface of the cover.

そして垂直に設けたものは前記のどの様な固着方法を用
いて製造することが可能であるが、カバー端面と水平に
設けたものは固着手段に制限を受ける。即ち第１図のよ
うにフランジに凸部を有する薄い皿状のカバー２と、フ
ランジに凹部を有する円筒状のケーシング３と結合端が
ハウジング上端部分の前記凹凸部で鉄合されるものは、
凹凸部が緊結し動くことができない為加圧落着装置を使
用できず接着方法のみで固着シールされる。しかしなが
らこの種のプラスチック材に対する適切な接着剤は無に
等しく、鉄合構造に対する接着剤として又シール剤とし
て十分に機能しないので、シール不十分となって燃料洩
れを生起し炎災を招来する虜れがある。又、特公昭５２
一４６６２号公報のようにフランジ上下面が平坦な深い
皿状をしたプラスチック製カバーと同じくフランジ上下
面が平坦な円筒状をしたプラスチック製ケーシングの結
合端がハウジングの略中央部分で結合されるものは、加
圧溶着装層を用いて溶着させる場合カバーのフランジ上
面とケーシングのランジ下面とに加圧治具を当接し、プ
ラスチック接合面を落着させる。そしてフランジ外周縁
の平坦部分においては、十分な加圧力によってプラスチ
ックは熔着されるが、フランジ内周側においては周壁に
よってじやまされる僅かな力しかかけられず溶着不十分
となって、燃料洩れを生起する塵れがあり接着剤や加熱
溶着を利用せざるを得ない。本発明はカバー上端面に水
平方向に向いた出口パイプを有する形状のプラスチック
製燃料フィル夕を加圧溶着装暦を用いて製造する方法を
提供するもので、上端面近傍に位置する下面が平坦なフ
ランジ部と上端面との間の壁を外周傾斜壁とし、かつ出
口パイプ取付部とフランジ部との間に凹部を形成したプ
ラスチック製薄皿状カバーに炉過体を固着した後、該カ
バーの外周傾斜壁が当接する傾斜面を有し、出口パイプ
逃げ部を設けたカバー用拾具に載置し、次に閉塞側に入
口パイプ、開放側に上下面が平坦なフランジ部を有し、
フランジ部付根に傾斜壁を有するプラスチック製円筒状
ケーシングを前記カバーに各フランジ部を対向させて戦
遣し、更にケーシングの傾斜壁とフランジ下面とを当接
させる形状を有するケーシング用捨具をケーシングに挿
設した後、カバー用捨具を振動、カバー用浴具を加圧し
ながらフランジ面全周に且つて熔着する製造方法であり
、カバーの外周傾斜壁と凹部によって燃料フィル夕のフ
ランジ部内周を溶融し強固にシールさせて燃料油の洩れ
を防止させたものである。Those installed vertically can be manufactured using any of the above-mentioned fixing methods, but those installed horizontally to the end face of the cover are limited by the fixing means. That is, as shown in FIG. 1, a thin plate-shaped cover 2 having a convex portion on the flange, a cylindrical casing 3 having a concave portion on the flange, and the connecting end thereof are iron-coupled at the concave and convex portion of the upper end of the housing.
Since the concave and convex portions are tightly bound together and cannot be moved, a pressurized sealing device cannot be used, and the seal can be fixed using only adhesive methods. However, there are no suitable adhesives for this type of plastic material, and they do not function well as adhesives or sealants for steel structures, resulting in insufficient sealing, resulting in fuel leaks and fire hazards. There is. Also, special public service in 1972
A deep dish-shaped plastic cover with a flat upper and lower flange surface as in Japanese Patent No. 14662, and a cylindrical plastic casing with a flat upper and lower flange surface, whose joint ends are joined at approximately the center of the housing. In the case of welding using a pressure welding layer, a pressure jig is brought into contact with the upper surface of the flange of the cover and the lower surface of the flange of the casing, and the plastic joint surfaces are allowed to settle. On the flat part of the outer periphery of the flange, the plastic is welded by sufficient pressure, but on the inner periphery of the flange, only a small amount of force is applied, which is suppressed by the surrounding wall, resulting in insufficient welding and preventing fuel leakage. Due to the dust generated, adhesives or heat welding must be used. The present invention provides a method for manufacturing a plastic fuel filter having a horizontally oriented outlet pipe on the upper end surface of the cover using a pressure welding process, and the lower surface located near the upper end surface is flat. After fixing the furnace body to a plastic thin plate-shaped cover, which has a wall between the flange portion and the upper end surface as an outer peripheral inclined wall and a recessed portion between the outlet pipe attachment portion and the flange portion, the cover Place the cover on a pick-up tool for the cover, which has an inclined surface that the outer circumferential inclined wall contacts, and is provided with an outlet pipe relief part, and then has an inlet pipe on the closed side and a flange part with flat upper and lower surfaces on the open side. ,
A plastic cylindrical casing having an inclined wall at the base of the flange portion is sent to the cover with each flange portion facing the casing, and a casing waste tool having a shape such that the inclined wall of the casing and the lower surface of the flange are brought into contact with the casing. This manufacturing method involves vibrating the cover tool and pressurizing the cover tool while welding the entire periphery of the flange surface. The periphery is melted to form a strong seal to prevent fuel oil from leaking.

以下実施例により説明する。燃料フィル夕は次の工程で
製造される。This will be explained below using examples. The fuel filter is manufactured in the following process.

第１工程は炉過体１７を固着したカバー２をカバー用沿
具１８｝こ戦層することで成る。カバー２はプラスチッ
ク製薄皿状で上端面２５から水平方向に向いた燃料出口
パイプ１７が形成されており、開放端の周縁部分は第４
図のように下面が平坦な溶着面１０と該溶着面１０から
へこんだトラップ１１と、該トラップ１１の上面１０が
平坦な環状フランジ９を形成している。そして上端面２
５と近傍の位置にあるフランジ９の間の壁はフランジ９
の方へ傾斜した外周傾斜壁８を成し、又出口パイプ７取
付部分の外周壁は第５図に示すように内側に向って凹部
１２を形成している。このカバー２に周知の炉適材１７
例えば菊花状をした炉紙を配設し接着剤にて固着シール
し、このカバー２の外周額斜壁８をカバー用沿具１８の
傾斜面１９に当接させて載層する。カバー用捨具１８は
第７図、第８図に示すようなカバー２の上端面２５の直
径よりやや大きな径をした閉口２０と、該閉口２０と絵
具上面との間にカバー２の外周傾斜壁８と相似の角度を
した環状の傾斜面１９を有し、該傾斜面１９の一部に出
口パイプ７用の溝状をした逃げ部２１が設けられている
。第２工程はカバー２′の綾着面１０にケーシング５の
溶着面１５を戦遣し、更にケーシング用捨臭２２の関口
をケーシング５′内に挿設しフランジー４に当接するこ
とで成る。The first step consists of layering the cover 2 to which the furnace overbody 17 is fixed on the cover mounting tool 18. The cover 2 is shaped like a thin plastic plate and has a fuel outlet pipe 17 oriented horizontally from the upper end surface 25, and the peripheral edge of the open end is a fourth pipe.
As shown in the figure, a welding surface 10 with a flat lower surface, a trap 11 recessed from the welding surface 10, and an annular flange 9 with a flat upper surface 10 of the trap 11 are formed. and upper end surface 2
The wall between 5 and the flange 9 located in the vicinity is the flange 9.
The outer circumferential wall 8 is inclined toward the outside, and the outer circumferential wall of the portion where the outlet pipe 7 is attached forms a recess 12 toward the inside as shown in FIG. Well-known furnace suitable material 17 for this cover 2
For example, a piece of paper in the shape of a chrysanthemum is disposed and firmly sealed with an adhesive, and the cover 2 is laminated with the outer circumferential slanted wall 8 brought into contact with the slanted surface 19 of the cover fitting 18. The cover waste tool 18 has a closing opening 20 having a diameter slightly larger than the diameter of the upper end surface 25 of the cover 2, as shown in FIGS. It has an annular inclined surface 19 having a similar angle to the wall 8, and a groove-shaped escape portion 21 for the outlet pipe 7 is provided in a part of the inclined surface 19. The second step consists of applying the welding surface 15 of the casing 5 to the twilling surface 10 of the cover 2', and further inserting the opening of the casing waste 22 into the casing 5' to abut against the flange 4.

ケーシング５′は第２図、第６図に示すようにプラスチ
ック製の円筒状をしており閉塞側に車由心方向に入口パ
イプ１３が、開放側に周緑部分上面が平坦な溶着面１５
と該溶着面１５からへこんだトラップ１６と、該トラツ
プ１６の下面１５′が平坦な環状フランジー４を形成し
ている。そしてケーシング周壁とフランジ１４の間に傾
斜壁を形成している。又ケーシング用捨臭２２は第９図
に示すように、ケーシング５の直径よりやや大きな径を
した閉口２３と該閉口２３と治具上面との間に、ケーシ
ング５′の傾斜壁と相似した傾斜面を有する。第３工程
は燃料フィルターのカバー２′とケーシング５′とを振
動溶着によって溶融固着することで成る。第１０図に示
すようにケーシング用捨具２２を押圧しながらカバー用
沿具１８を左右に振動させ、カバー２′とケーシング５
′の各落着面１０，１５を溶着させる。溶融した一部の
プラスチックは第１１図のようにフランジ部４，１４に
設けたトラップ９，１６内に流れてその空間を埋め固化
して後合面の強度向上に役立つ。又カバー２とケ−シン
グ５の内側にはみ出したバリ２４はそのまま固化する。
振動溶着の際カバー用沿具１８の傾斜面１９と接する外
周傾斜壁８で、熔着面１０の圧力と左右の振動方向の圧
力との合力を生み、この合力が周壁がじやまして力をか
けられなかったカバー２′とケーシング５′のフランジ
９，１４内周側に大きな力を加える。As shown in FIGS. 2 and 6, the casing 5' is made of plastic and has a cylindrical shape, and has an inlet pipe 13 on the closed side in the direction of the center of the vehicle, and an open side with a welded surface 15 with a flat upper surface of the green part.
A trap 16 is recessed from the welding surface 15, and a lower surface 15' of the trap 16 forms a flat annular flange 4. An inclined wall is formed between the casing peripheral wall and the flange 14. Furthermore, as shown in FIG. 9, the casing waste odor 22 has a closing hole 23 having a diameter slightly larger than the diameter of the casing 5, and a slope similar to the sloped wall of the casing 5' between the closing hole 23 and the top surface of the jig. It has a surface. The third step consists of melting and fixing the fuel filter cover 2' and casing 5' by vibration welding. As shown in FIG. 10, while pressing the casing scraper 22, the cover holder 18 is vibrated from side to side, and the cover 2' and casing 5 are
' are welded to each attachment surface 10, 15. A portion of the melted plastic flows into the traps 9, 16 provided on the flanges 4, 14 as shown in FIG. 11, fills the spaces therebetween, solidifies, and serves to improve the strength of the bonded surface. Further, the burrs 24 protruding inside the cover 2 and the casing 5 are solidified as they are.
During vibration welding, the peripheral inclined wall 8 in contact with the sloped surface 19 of the cover fitting 18 generates a resultant force of the pressure on the welding surface 10 and the pressure in the left and right vibration directions, and this resultant force causes the peripheral wall to resist and exert a force. A large force is applied to the inner peripheral sides of the flanges 9 and 14 of the cover 2' and casing 5', which were not applied.

又同様にケーシング用沿具２２の傾斜面と接するケーシ
ング５′の傾斜壁でケーシング用沿具２２にかかる力を
分圧させ、フランジ９，１４の内周側に圧力を加え、プ
ラスチックの熔融を捉進させる。又出口パイプ７取付部
に設けた凹部１２は振動の際にかかる出口パイプ７の剛
性をフランジ９の内周側へ分圧させるとともに、落着の
際のそりやひずみ等の寸法誤差を防いでパイプ７の強度
を上げる。以上のように本発明は従来フランジ内周側へ
の加圧不足による落着面が弱く加圧溶着できなかったカ
バー上端面に水平方向に向いた出口パイプを有する形状
の燃料フィル夕を、カバー上端面と近傍位置にあるフラ
ンジの壁を外周傾斜壁とし、且つパイプ取付部の壁を凹
部とするとともに加圧治具にも前記外周傾斜壁と相似の
傾斜面を設け、外周傾斜壁と傾斜面とを当接させて加圧
させたので、カバーとケーシングのフランジ内周側にプ
ラスチックが溶融できる圧力をかけることができ、燃料
洩れのないシールが確実な燃料フィル夕を製造すること
ができる。Similarly, the force applied to the casing fitting 22 is divided into parts by the inclined wall of the casing 5' which is in contact with the inclined surface of the casing fitting 22, and pressure is applied to the inner circumferential side of the flanges 9 and 14 to prevent the plastic from melting. Capture and advance. In addition, the recess 12 provided in the mounting portion of the outlet pipe 7 divides the rigidity of the outlet pipe 7 during vibration toward the inner circumferential side of the flange 9, and prevents dimensional errors such as warpage and distortion during settling of the pipe. Increase the intensity of 7. As described above, the present invention provides a fuel filter having a shape that has an outlet pipe oriented horizontally on the upper end surface of the cover, which conventionally had a weak attachment surface and could not be pressure-welded due to insufficient pressure on the inner circumferential side of the flange. The wall of the flange located near the end face is an outer periphery inclined wall, and the wall of the pipe attachment part is a recessed part, and the pressure jig is also provided with an inclined surface similar to the outer periphery inclined wall, so that the outer periphery inclined wall and the inclined surface are formed. Since they are brought into contact with each other and pressurized, pressure that can melt the plastic can be applied to the inner circumferential side of the flange of the cover and casing, making it possible to manufacture a fuel filter with a reliable seal without fuel leakage.

図面の簡単な説明第１図は従来の燃料フィル夕の溶着構
造を示す一部断面図、第２、第３図は本発明により得ら
れる燃料フィル夕の一部断面図および側面図、第４、第
５、第６図はその一部拡大図、第７、第８図はカバー用
沿具、第９図はケーシング用加工治０臭を示し、第１０
図は加圧熔着で製造した時の組付状態を示し、第１１図
は溶着部分の溶着状態を示す図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial cross-sectional view showing the welded structure of a conventional fuel filter, FIGS. 2 and 3 are partial cross-sectional views and side views of a fuel filter obtained according to the present invention, and FIG. , Figures 5 and 6 are partially enlarged views, Figures 7 and 8 are the cover fittings, Figure 9 is the casing processing jig, and Figure 10 is the casing machining tool.
The figure shows the assembled state when manufactured by pressure welding, and FIG. 11 is a diagram showing the welded state of the welded portion.

１，１′……燃料フィル夕、２，２′……カバー、５，
５′……ケーシング、７……出口パイタプ、８・・・・
・・外周傾斜壁、９，１４・・・…フランジ部、１８・
・・・・・カバー用加圧拾具、１９・…・・傾斜面、２
２・・・…ケーシング用加圧治臭、２５・・・・・・カ
バー上端面。1, 1'... Fuel filter, 2, 2'... Cover, 5,
5'...Casing, 7...Outlet pipe tap, 8...
...Outer peripheral inclined wall, 9, 14...Flange part, 18.
...Pressure pick-up tool for cover, 19...Slope surface, 2
2... Pressurized odor control for casing, 25... Upper end surface of cover.

第１図 第２図 第３図 第４図 第５図 第６図 第７図 第８図 第９図 第１０図 第１１図Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11

Claims (1)

【特許請求の範囲】[Claims] １ 入口パイプを有するケーシングと出口パイプを有す
るカバーとを固着して成るハウジング内に濾過体を配設
した燃料フイルタにおいて、上端面に水平方向に向いた
出口パイプと、該上端面近傍に位置する下端の下面が平
坦なフランジ部と上端面との間に外周傾斜壁を有し、か
つ前記出口パイプ取付部とフランジ部との間に凹部を形
成したプラスチツク製皿状カバーに濾過材を固着し、上
記外周傾斜壁と類似する傾斜をした傾斜面を有するカバ
ー用治具の傾斜面に、前記カバーの外周傾斜壁を当接さ
せて載置する工程と、閉塞側に入口パイプ開放側に下上
面が平坦なフランジ部と、フランジ部付根に傾斜壁を有
するプラスチツク製円筒状ケーシングを前記カバーとケ
ーシングの各フランジ部と当接し、次に下面が平坦で傾
斜壁となった開口を有するケーシング用加圧治具をケー
シングに挿設しケーシングフランジ部と当接させる工程
と、前記カバー用治具とケーシング用治具とを押圧振動
してハウジング端部を溶着する工程とから成る燃料フイ
ルタの製造方法。1. In a fuel filter in which a filter body is disposed in a housing formed by fixing a casing having an inlet pipe and a cover having an outlet pipe, the outlet pipe is oriented horizontally to the upper end surface, and the outlet pipe is located near the upper end surface. A filtration material is fixed to a plastic dish-shaped cover having an outer peripheral inclined wall between a flange portion with a flat lower surface and an upper end surface, and a recessed portion between the outlet pipe attachment portion and the flange portion. , a step of placing the outer circumferential inclined wall of the cover in contact with the inclined surface of a cover jig having an inclined surface having a slope similar to the outer circumferential inclined wall; A plastic cylindrical casing having a flange portion with a flat upper surface and an inclined wall at the base of the flange portion is brought into contact with each flange portion of the cover and casing, and then a casing having an opening with a flat lower surface and an inclined wall. Manufacture of a fuel filter comprising the steps of inserting a pressure jig into the casing and bringing it into contact with the casing flange, and welding the ends of the housing by pressing and vibrating the cover jig and the casing jig. Method.