JP4157909B2 - Fuel injector positioning structure - Google Patents

Fuel injector positioning structure Download PDF

Info

Publication number
JP4157909B2
JP4157909B2 JP2007522246A JP2007522246A JP4157909B2 JP 4157909 B2 JP4157909 B2 JP 4157909B2 JP 2007522246 A JP2007522246 A JP 2007522246A JP 2007522246 A JP2007522246 A JP 2007522246A JP 4157909 B2 JP4157909 B2 JP 4157909B2
Authority
JP
Japan
Prior art keywords
fuel injector
clip
supply pipe
fuel supply
fuel
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
JP2007522246A
Other languages
Japanese (ja)
Other versions
JPWO2006137298A1 (en
Inventor
良貴 塩澤
光男 海塩
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.)
Sanoh Industrial Co Ltd
Original Assignee
Sanoh Industrial 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 Sanoh Industrial Co Ltd filed Critical Sanoh Industrial Co Ltd
Application granted granted Critical
Publication of JP4157909B2 publication Critical patent/JP4157909B2/en
Publication of JPWO2006137298A1 publication Critical patent/JPWO2006137298A1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
    • F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8023—Fuel injection apparatus manufacture, repair or assembly the assembly involving use of quick-acting mechanisms, e.g. clips
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/852—Mounting of fuel injection apparatus provisions for mounting the fuel injection apparatus in a certain orientation, e.g. markings or notches
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/853—Mounting of fuel injection apparatus involving use of quick-acting mechanism, e.g. clips
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/90—Selection of particular materials
    • F02M2200/9015—Elastomeric or plastic materials

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)

Description

【技術分野】
【０００１】
本発明は、フューエルインジェクタの位置決め構造に関し、詳しくは、クリップを用いたフューエルインジェクタの回動方向に対する位置決め構造に関するものである。
【背景技術】
【０００２】
フューエルインジェクタは、その基端部が燃料供給管に配設された分岐管に挿嵌されて保持される。このようなフューエルインジェクタでは、先端に噴射口が形成され、それらの噴射口から、燃料をインテークマニホールドの吸入管に、所定方向に向けて噴射させる必要があることから、フューエルインジェクタの回動方向に対する位置決めがなされている。
上記フューエルインジェクタの回動方向に対する位置決め構造としては、例えば、日本国特開平８−１００７３４号公報（以下、特許文献１）に記載された技術が存在する。この特許文献１に開示された技術は、円管状の基管に円管状の分岐管を設けた燃料供給管の前記分岐管にフューエルインジェクタを挿嵌し、板状弾性体のクリップの第１の挟持部で前記基管を挟持させ、第２の挟持部でフューエルインジェクタの胴部を挟持させるとともに、前記第２の挟持部に設けた凸部をフューエルインジェクタの胴部に設けた穴に嵌合させている。
ところで、上記特許文献１に開示されているクリップは、一端部で燃料供給管の基管を挟持し、他端部でフューエルインジェクタを挟持するものであるため、分岐管の軸心方向に長くなり、それだけ大型化してしまう。また、このクリップを、板金を折り曲げて挟持片を形成すると、幅方向に広くなって、それだけ大きな材料が必要となり、型によって成形する場合には、少なくとも３つの型が必要となり、コストアップになる。
また、特許文献１に開示された技術においては、フューエルインジェクタを燃料供給管の基管に支持されたクリップに保持させている、即ち、フューエルインジェクタの保持部から燃料供給管の保持部までの距離が長いので、フューエルインジェクタの保持が不確実になる虞がある。
また、近年、自動車のエンジン房内は、部品類が増加する傾向にあり、燃料供給管も他の部品との干渉を避けるために、レイアウト上の自由度が求められている。そのため、特許文献１に記載されているようなパイプをつないだ形状から、プレス加工により成形した２部品をロウ付けし、箱状とした燃料供給管が増えてきている。ところが、プレス成形品を接合した燃料供給管にあっては、その接合時に組付け誤差が生じる場合があり、特許文献１に記載されたクリップのように、燃料供給管自体を挟持する形状のものにあっては、この燃料供給管の組付け誤差に対応し難い。
本発明は、上述した従来のフューエルインジェクタの位置決め構造が有する課題に鑑みて成されたものであって、その目的は、フューエルインジェクタの保持がより確実に行なえ、コンパクトなクリップの使用が可能で、しかもクリップの型成形が容易なフューエルインジェクタの位置決め構造を提供することにある。
【発明の開示】
【０００３】
上記した目的を達成するため、本発明に係るフューエルインジェクタの位置決め構造は、燃料供給管に形成した分岐管にフューエルインジェクタを挿嵌して取付けるフューエルインジェクタの位置決め構造において、前記フューエルインジェクタの中間部周面に凸部を形成するとともに、前記分岐管の周面を挟持するＣ型円弧状の挟持舌片と、該挟持舌片の上縁左右から外方にそれぞれ挟持舌片の先端と同じ方向に張り出し、それらの間に前記フューエルインジェクタの凸部を嵌合する凹部が画成されたフランジ片と、前記燃料供給管に当接し、前記分岐管の軸心に対する回動を阻止する前記挟持舌片の基端部から下方に向けて形成されたストッパ片とを有する合成樹脂によって型成形により一体成形されたクリップを備え、前記クリップの挟持舌片を前記分岐管の周面に挟持させるとともに、前記クリップのストッパ片を前記燃料供給管に当接させ、前記フューエルインジェクタに形成された凸部を前記クリップのフランジ片間の凹部に嵌合させて、前記フューエルインジェクタの前記分岐管の軸心に対する回動方向の位置決めをしたことを特徴とする。
この本発明によれば、クリップの挟持舌片を分岐管に挟持させ、ストッパ片を燃料供給管に当接させるだけなので、従来のように燃料供給管を挟持するための挟持片を形成する必要がなく、クリップの分岐管の軸心方向の長さが短くて済み、かつ、幅方向の広さが狭くて済むため、クリップがコンパクトになる。
また、上記本発明によれば、分岐管に保持させたクリップによってフューエルインジェクタの回動が阻止される、即ち、フューエルインジェクタの燃料供給管への保持距離が短いので、フューエルインジェクタが確実に保持される。
更に、上記本発明によれば、プレスによって形成された２部品を互いに組付けて構成される燃料供給管の場合には、燃料供給管に組付け誤差が生じる場合があるが、クリップを分岐管に保持させることとし、燃料供給管を装着したクリップの回動阻止のみに利用することとした本発明においては、燃料供給管の組付け誤差の影響は少ない。
また、本発明に係るフューエルインジェクタの位置決め構造は、上記発明において、上記フューエルインジェクタの凸部を、外郭が馬蹄形を成すフランジ部としたことを特徴とする。
この本発明によれば、フューエルインジェクタの周面に配設された外郭が馬蹄形を成すフランジ部がクリップのフランジ片間の凹部に嵌合されるため、係合が確実なものとなる。
更に、本発明に係るフューエルインジェクタの位置決め構造は、上記発明において、上記燃料供給管が箱状に形成され、上記ストッパ片を上記燃料供給管の側面に当接させることによって、上記クリップの回動を阻止させるようにしたことを特徴とする。
この本発明によれば、クリップのストッパ片が燃料供給管の平面部で当接するので、より安定した回動防止が行える。
【図面の簡単な説明】
【０００４】
第１図は、本発明に係るフューエルインジェクタの位置決め構造を備えた燃料供給管の斜視図である。第２図は、第１図におけるクリップの拡大斜視図、第３図は、第１図における矢視Ａの部分拡大斜視図、第４図は、第１図における矢視Ａに相当する変形例を示した部分拡大斜視図、第５図は、第１図における矢視Ｂの部分拡大斜視図である。第６図は、本発明に係るフューエルインジェクタの位置決め構造におけるストッパ手段の他の形態を示した部分拡大斜視図である。
【発明を実施するための最良の形態】
【０００５】
以下、上記した本発明に係るフューエルインジェクタの位置決め構造の実施の形態を、図面を参照しながら詳細に説明する。
なお、この実施の形態では、燃料供給管を、実際の取付け状態と上下反対の姿勢で図面に描いており、以下の用語の「上下」は、図面に描かれた状態で表現する。
第１図に示す燃料供給管１は、プレスによって形成され、上壁２ａおよびその周縁に下方に向けて形成された側壁２ｂによって構成された長尺の燃料供給管体上部部分２と、同じくプレスによって形成され、底壁３ａおよびその周縁に上方に向けて形成された側壁３ｂによって構成された長尺の燃料供給管体下部部分３とを、互いに嵌合させてロウ付けして一体化されている。
そして、上記燃料供給管１を構成する上部部分２の上壁２ａには、３つの孔（図示せず）が形成され、その孔の周縁に、ラッパ状先端部を有する分岐管４の基端がそれぞれロウ付けされている。
第１図に示すクリップ５は、弾性を有する合成樹脂によって型成形により一体成形されており、第２図に詳細に示すように、上記分岐管４を囲むように円弧状に形成された挟持舌片６，６と、それらの挟持舌片６，６の上縁から半径方向外方に、それぞれ挟持舌片６、６の先端と同じ方向に張り出し、先端が上方へ向けて形成されたフランジ片７，７とを有している。そして、前記フランジ片７，７によって、それらの間に凹部８が画成されている。さらに、このクリップ５は、ストッパ手段９として、前記挟持舌片６，６の基端部から下方へ向けてストッパ片９ａが形成されている。
第１図に示すフューエルインジェクタ１０は、本体の中間部に合成樹脂製の管状体１１を有し、該管状体１１の周面に、外郭が馬蹄形を成すフランジ部１２を備え、該フランジ部１２の側面を成す平面部に略直方形のコネクタ１３を備えている。
このように構成された燃料供給管１、クリップ５およびフューエルインジェクタ１０は、以下のようにして組付けられる。
先ず、燃料供給管１の分岐管４に、クリップ５の挟持舌片６，６を装着する。この状態におけるクリップ５は、挟持舌片６，６によって分岐管４に保持され、第３図に示すように、ストッパ片９ａが燃料供給管１の側壁２ｂに当接することによって、分岐管４の軸心に対する回動方向の移動が阻止される。
なお、ストッパ片９ａが当接する燃料供給管１の側壁２ｂの面が、分岐管４とほぼ同心円状に湾曲している場合には、第４図に示すように、燃料供給管１の側壁３ｂの上端に突起１４を形成し、その突起１４にストッパ片９ａの側端を当接して、クリップ５の分岐管４の軸心に対する回動方向の移動が阻止されるようにすればよい。
次いで、フューエルインジェクタ１０の基端が分岐管４に挿嵌される。この状態におけるフューエルインジェクタ１０は、周面に配設された凸部（フランジ部１２）がクリップ５のフランジ片７，７によって画成される凹部８に落とし込まれ、それによってフューエルインジェクタ１０の分岐管４の軸心に対する回動方向の移動が阻止される。
なお、上記実施の形態では、フューエルインジェクタ１０の凸部として、フランジ部１２を利用しているが、例えば、コネクタ１３等の他の機能部の凸部を利用してもよく、特別に形成してもよい。
また、上記実施の形態では、クリップ５に凹部８を形成し、そこにフューエルインジェクタ１０の凸部（フランジ部１２）を挿嵌させているが、クリップ５に凸部を形成し、フューエルインジェクタ１０に凹部を形成してもよい。
また、上記実施の形態では、ストッパ手段９として、クリップ５にストッパ片９ａを形成し、そのストッパ片９ａを燃料供給管１の側面に当接させることによって、クリップ５の回動を阻止しているが、第６図に示すように、ストッパ手段９として、燃料供給管１の上面２ａに凸部９ｂを形成するとともに、クリップ５の下面に凹部９ｃを形成し、クリップ５の凹部９ｃを燃料供給管１の凸部９ｂに嵌合させることによって、クリップ５の回動を阻止してもよい。
【産業上の利用可能性】
【０００６】
以上に説明した本発明に係るフューエルインジェクタの位置決め構造によれば、フューエルインジェクタの保持がより確実に行なえ、コンパクトなクリップの使用が可能であり、しかもクリップの型成形が容易なものとなる。そのため、本発明は、燃料供給管に形成した分岐管にフューエルインジェクタを挿嵌し、クリップでフューエルインジェクタの回動方向に対する位置決めを行う構造において、広く利用することができる。【Technical field】
[0001]
The present invention relates to a positioning structure for a fuel injector, and more particularly to a positioning structure for a rotation direction of a fuel injector using a clip.
[Background]
[0002]
The base end of the fuel injector is inserted and held in a branch pipe disposed in the fuel supply pipe. In such a fuel injector, injection ports are formed at the tips, and it is necessary to inject fuel from the injection ports to the intake pipe of the intake manifold in a predetermined direction. Positioning has been made.
As a positioning structure with respect to the rotational direction of the fuel injector, for example, there is a technique described in Japanese Patent Laid-Open No. 8-1000073 (hereinafter referred to as Patent Document 1). In the technique disclosed in Patent Document 1, a fuel injector is inserted into the branch pipe of a fuel supply pipe in which a cylindrical branch pipe is provided in a cylindrical base pipe, and a first elastic clip clip is formed. The base tube is sandwiched by the sandwiching portion, the barrel portion of the fuel injector is sandwiched by the second sandwiching portion, and the convex portion provided in the second sandwiching portion is fitted into the hole provided in the barrel portion of the fuel injector. I am letting.
By the way, the clip disclosed in Patent Document 1 has a fuel supply pipe base tube sandwiched at one end and a fuel injector sandwiched at the other end, and therefore becomes longer in the axial direction of the branch pipe. That ’s why it gets bigger. Further, when the clip is bent to form a sandwiching piece, it becomes wider in the width direction, so that a larger material is required. When molding with a mold, at least three molds are required, which increases the cost. .
In the technique disclosed in Patent Document 1, the fuel injector is held by a clip supported by the base pipe of the fuel supply pipe, that is, the distance from the holding section of the fuel injector to the holding section of the fuel supply pipe. Is long, there is a risk that the fuel injector will be uncertainly held.
In recent years, the number of parts tends to increase in the engine compartment of an automobile, and the fuel supply pipe is also required to have flexibility in layout in order to avoid interference with other parts. For this reason, the number of fuel supply pipes that are box-shaped by brazing two parts molded by pressing from the shape of connecting pipes as described in Patent Document 1 is increasing. However, in a fuel supply pipe joined with a press-formed product, an assembly error may occur at the time of joining, and the fuel supply pipe itself is sandwiched like a clip described in Patent Document 1. In this case, it is difficult to cope with the assembly error of the fuel supply pipe.
The present invention has been made in view of the problems of the above-described conventional fuel injector positioning structure, and its purpose is to more reliably hold the fuel injector and to use a compact clip. In addition, it is an object of the present invention to provide a fuel injector positioning structure in which a clip can be easily molded.
DISCLOSURE OF THE INVENTION
[0003]
To achieve the above object, a fuel injector positioning structure according to the present invention is a fuel injector positioning structure in which a fuel injector is inserted and attached to a branch pipe formed in a fuel supply pipe. A convex portion is formed on the surface, and a C-shaped arc-shaped sandwiching tongue piece that sandwiches the peripheral surface of the branch pipe, and an upper edge of the sandwiching tongue piece outward from the left and right sides in the same direction as the tip of the sandwiching tongue piece A flange piece overhanging and defining a concave portion for fitting the convex portion of the fuel injector between them, and the clamping tongue piece that abuts on the fuel supply pipe and prevents rotation with respect to the axis of the branch pipe A clip integrally formed by molding with a synthetic resin having a stopper piece formed downward from the base end portion of the clip, The holding tongue piece is clamped on the peripheral surface of the branch pipe, the stopper piece of the clip is brought into contact with the fuel supply pipe, and the convex portion formed on the fuel injector is fitted into the concave portion between the flange pieces of the clip. In combination, the fuel injector is positioned in the rotational direction with respect to the axis of the branch pipe.
According to the present invention, the clip clamping tongue piece is clamped by the branch pipe, and the stopper piece is merely brought into contact with the fuel supply pipe. Therefore, it is necessary to form a clamp piece for clamping the fuel supply pipe as in the conventional case. The clip can be made compact because the length of the branch pipe in the axial center direction is short and the width in the width direction is narrow.
Further, according to the present invention, the rotation of the fuel injector is prevented by the clip held by the branch pipe, that is, the holding distance of the fuel injector to the fuel supply pipe is short, so that the fuel injector is securely held. The
Further, according to the present invention, in the case of a fuel supply pipe constructed by assembling two parts formed by pressing, an assembly error may occur in the fuel supply pipe. In the present invention, which is used only to prevent the rotation of the clip equipped with the fuel supply pipe, the influence of the assembly error of the fuel supply pipe is small.
Further, the fuel injector positioning structure according to the present invention is characterized in that, in the above-mentioned invention, the convex portion of the fuel injector is a flange portion whose outer shell forms a horseshoe shape.
According to the present invention, since the outer portion disposed on the peripheral surface of the fuel injector has a horseshoe-shaped flange portion fitted into the recess between the flange pieces of the clip, the engagement is ensured.
Further, in the fuel injector positioning structure according to the present invention, in the above invention, the fuel supply pipe is formed in a box shape, and the stopper piece is brought into contact with a side surface of the fuel supply pipe, thereby rotating the clip. It is characterized by preventing the above.
According to the present invention, since the stopper piece of the clip comes into contact with the flat portion of the fuel supply pipe, more stable rotation prevention can be performed.
[Brief description of the drawings]
[0004]
FIG. 1 is a perspective view of a fuel supply pipe provided with a fuel injector positioning structure according to the present invention. 2 is an enlarged perspective view of the clip in FIG. 1, FIG. 3 is a partially enlarged perspective view of the arrow A in FIG. 1, and FIG. 4 is a modification corresponding to the arrow A in FIG. FIG. 5 is a partially enlarged perspective view of FIG. 5 and a partially enlarged perspective view of arrow B in FIG. FIG. 6 is a partially enlarged perspective view showing another form of the stopper means in the fuel injector positioning structure according to the present invention.
BEST MODE FOR CARRYING OUT THE INVENTION
[0005]
Hereinafter, an embodiment of a fuel injector positioning structure according to the present invention will be described in detail with reference to the drawings.
In this embodiment, the fuel supply pipe is drawn on the drawing in a posture opposite to the actual mounting state, and the following terms “up and down” are expressed in the state drawn on the drawing.
A fuel supply pipe 1 shown in FIG. 1 is formed by pressing, and an upper portion 2 of a long fuel supply pipe body constituted by an upper wall 2a and a side wall 2b formed downward on the periphery of the upper wall 2a. Are formed by the bottom wall 3a and the side wall 3b formed upward on the periphery of the bottom wall 3a, and the lower portion 3 of the long fuel supply pipe body is fitted together and brazed to be integrated. Yes.
The upper wall 2a of the upper portion 2 constituting the fuel supply pipe 1 is formed with three holes (not shown), and the base end of the branch pipe 4 having a trumpet-shaped tip at the periphery of the hole. Are brazed.
The clip 5 shown in FIG. 1 is integrally formed by molding with a synthetic resin having elasticity, and, as shown in detail in FIG. 2, a clamping tongue formed in an arc shape so as to surround the branch pipe 4 Flange pieces formed so as to protrude from the upper edges of the pieces 6 and 6 and the pinching tongue pieces 6 and 6 radially outward in the same direction as the tips of the pinching tongue pieces 6 and 6, respectively. 7 and 7. The flange pieces 7 and 7 define a recess 8 therebetween. Further, the clip 5 is formed with a stopper piece 9a as a stopper means 9 from the base end portion of the clamping tongue pieces 6 and 6 downward.
A fuel injector 10 shown in FIG. 1 has a tubular body 11 made of a synthetic resin at an intermediate portion of a main body, and includes a flange portion 12 whose outer shell forms a horseshoe shape on the peripheral surface of the tubular body 11. A substantially rectangular connector 13 is provided on the flat surface portion forming the side surface.
The fuel supply pipe 1, the clip 5 and the fuel injector 10 thus configured are assembled as follows.
First, the clamping tongue pieces 6 and 6 of the clip 5 are attached to the branch pipe 4 of the fuel supply pipe 1. The clip 5 in this state is held on the branch pipe 4 by the clamping tongue pieces 6 and 6, and the stopper piece 9a abuts against the side wall 2b of the fuel supply pipe 1 as shown in FIG. Movement in the rotational direction relative to the axis is prevented.
If the surface of the side wall 2b of the fuel supply pipe 1 with which the stopper piece 9a abuts is curved substantially concentrically with the branch pipe 4, the side wall 3b of the fuel supply pipe 1 is shown in FIG. A protrusion 14 may be formed at the upper end of the stopper, and the side end of the stopper piece 9a may be brought into contact with the protrusion 14 so that the movement of the clip 5 in the rotational direction relative to the axis of the branch pipe 4 is prevented.
Next, the base end of the fuel injector 10 is inserted into the branch pipe 4. In the fuel injector 10 in this state, the convex portion (flange portion 12) disposed on the peripheral surface is dropped into the concave portion 8 defined by the flange pieces 7, 7 of the clip 5, thereby branching the fuel injector 10. Movement in the rotational direction relative to the axis of the tube 4 is prevented.
In the above-described embodiment, the flange portion 12 is used as the convex portion of the fuel injector 10. However, for example, the convex portion of another functional portion such as the connector 13 may be used, and it is specially formed. May be.
Moreover, in the said embodiment, although the recessed part 8 is formed in the clip 5 and the convex part (flange part 12) of the fuel injector 10 is inserted there, the convex part is formed in the clip 5 and the fuel injector 10 is formed. You may form a recessed part in this.
In the above embodiment, as the stopper means 9, the stopper piece 9 a is formed on the clip 5, and the stopper piece 9 a is brought into contact with the side surface of the fuel supply pipe 1 to prevent the clip 5 from rotating. However, as shown in FIG. 6, as the stopper means 9, a convex portion 9 b is formed on the upper surface 2 a of the fuel supply pipe 1, and a concave portion 9 c is formed on the lower surface of the clip 5. The clip 5 may be prevented from rotating by being fitted to the convex portion 9 b of the supply pipe 1.
[Industrial applicability]
[0006]
According to the fuel injector positioning structure according to the present invention described above, the fuel injector can be more reliably held, a compact clip can be used, and the clip can be easily molded. Therefore, the present invention can be widely used in a structure in which a fuel injector is inserted into a branch pipe formed in a fuel supply pipe and the fuel injector is positioned with respect to the rotation direction with a clip.

Claims (3)

燃料供給管に形成した分岐管にフューエルインジェクタを挿嵌して取付けるフューエルインジェクタの位置決め構造において、
前記フューエルインジェクタの中間部周面に凸部を形成するとともに、前記分岐管の周面を挟持するＣ型円弧状の挟持舌片と、該挟持舌片の上縁左右から外方にそれぞれ挟持舌片の先端と同じ方向に張り出し、それらの間に前記フューエルインジェクタの凸部を嵌合する凹部が画成されたフランジ片と、前記燃料供給管に当接し、前記分岐管の軸心に対する回動を阻止する前記挟持舌片の基端部から下方に向けて形成されたストッパ片とを有する合成樹脂によって型成形により一体成形されたクリップを備え、前記クリップの挟持舌片を前記分岐管の周面に挟持させるとともに、前記クリップのストッパ片を前記燃料供給管に当接させ、前記フューエルインジェクタに形成された凸部を前記クリップのフランジ片間の凹部に嵌合させて、前記フューエルインジェクタの前記分岐管の軸心に対する回動方向の位置決めをしたことを特徴とする、フューエルインジェクタの位置決め構造。In a fuel injector positioning structure in which a fuel injector is inserted and attached to a branch pipe formed in a fuel supply pipe,
A convex portion is formed on the circumferential surface of the intermediate portion of the fuel injector, and a C-shaped arc-shaped clamping tongue piece for clamping the circumferential surface of the branch pipe; A flange piece projecting in the same direction as the tip of the piece and having a recess for fitting the projection of the fuel injector between them, and abutting on the fuel supply pipe and rotating with respect to the axis of the branch pipe A clip integrally formed by molding with a synthetic resin having a stopper piece formed downward from a base end portion of the clamping tongue piece for preventing the clamping tongue piece, and the clamping tongue piece of the clip is arranged around the periphery of the branch pipe The clip stopper portion is brought into contact with the fuel supply pipe, and a convex portion formed on the fuel injector is fitted into a concave portion between the flange pieces of the clip. Characterized in that the positioning in the rotational direction with respect to the axis of the branch pipe-menu El injector, the fuel injector positioning structure. 前記フューエルインジェクタの凸部を、外郭が馬蹄形を成すフランジ部としたことを特徴とする、請求の範囲１に記載のフューエルインジェクタの位置決め構造。  2. The fuel injector positioning structure according to claim 1, wherein the convex portion of the fuel injector is a flange portion whose outer shell forms a horseshoe shape. 前記燃料供給管が箱状に形成され、前記ストッパ片を前記燃料供給管の側面に当接させることによって、前記クリップの回動を阻止させるようにしたことを特徴とする、請求の範囲１に記載のフューエルインジェクタの位置決め構造。  2. The fuel supply pipe according to claim 1, wherein the fuel supply pipe is formed in a box shape, and the stopper piece is brought into contact with a side surface of the fuel supply pipe to prevent rotation of the clip. The fuel injector positioning structure described.
JP2007522246A 2005-06-24 2006-06-07 Fuel injector positioning structure Expired - Fee Related JP4157909B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2005184388 2005-06-24
JP2005184388 2005-06-24
PCT/JP2006/311892 WO2006137298A1 (en) 2005-06-24 2006-06-07 Positioning structure of fuel injector

Publications (2)

Publication Number Publication Date
JP4157909B2 true JP4157909B2 (en) 2008-10-01
JPWO2006137298A1 JPWO2006137298A1 (en) 2009-01-15

Family

ID=37570327

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007522246A Expired - Fee Related JP4157909B2 (en) 2005-06-24 2006-06-07 Fuel injector positioning structure

Country Status (2)

Country Link
JP (1) JP4157909B2 (en)
WO (1) WO2006137298A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5887154B2 (en) * 2011-03-10 2016-03-16 株式会社オティックス Fuel delivery pipe
JP6853129B2 (en) * 2017-07-06 2021-03-31 臼井国際産業株式会社 Injector holder
US10690101B2 (en) * 2017-09-15 2020-06-23 Indian Motorcycle International, LLC Wheeled vehicle

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3918410A1 (en) * 1989-06-06 1990-12-13 Bosch Gmbh Robert FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINES
GB8926363D0 (en) * 1989-11-22 1990-01-10 Lucas Ind Plc Fuel injection system
JP2535132Y2 (en) * 1991-02-20 1997-05-07 ダイハツ工業株式会社 Fuel injector mounting device
US5074269A (en) * 1991-04-29 1991-12-24 Chrysler Corporation Anti-rotation fuel injector clip
DE4413914A1 (en) * 1994-04-21 1995-10-26 Bosch Gmbh Robert Fuel injector

Also Published As

Publication number Publication date
JPWO2006137298A1 (en) 2009-01-15
WO2006137298A1 (en) 2006-12-28

Similar Documents

Publication Publication Date Title
US8950588B2 (en) Band type filter
JP3828701B2 (en) Mounting structure of fuel injection valve to fuel distribution pipe
US7568499B2 (en) Fuel check valve
CN108915921B (en) Nozzle plate mounting structure for fuel injection device
CN102337996B (en) Intake unit
JP4157909B2 (en) Fuel injector positioning structure
US20100105221A1 (en) Electrical connection box and method of assembling the electrical connection box
US6471863B2 (en) Filtering device
JP2005106167A (en) Clip
JP2013133749A (en) Intake air flow control valve
CN107013381B (en) Air intake manifold
JP2014177904A (en) Intake manifold
US20050109899A1 (en) Supporting structure
US9249763B2 (en) Hollow plastic piece
JP2006144948A (en) Pipe connection structure
JP4133467B2 (en) Delivery pipe for fuel injector
JP2013245620A (en) Duct fitting structure
JP5315132B2 (en) Mounting structure of fuel injection valve
JP2001140728A (en) Fuel injection valve mounting device
JP5426358B2 (en) Assembly structure of plastic parts
JP3993611B2 (en) Mounting structure of fuel injection valve to fuel distribution pipe and mounting method thereof
JP4424661B2 (en) Synthetic resin intake manifold for internal combustion engine
JP3778692B2 (en) Tank integrated pump
JP5125321B2 (en) Connecting clamp
JP2013096239A (en) Inlet pipe

Legal Events

Date Code Title Description
TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20080624

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20080714

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110718

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 4157909

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110718

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110718

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120718

Year of fee payment: 4

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120718

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120718

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130718

Year of fee payment: 5

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees