JP2013083258A - Clamping claw for fuel injection nozzle - Google Patents

Clamping claw for fuel injection nozzle Download PDF

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Publication number
JP2013083258A
JP2013083258A JP2012223533A JP2012223533A JP2013083258A JP 2013083258 A JP2013083258 A JP 2013083258A JP 2012223533 A JP2012223533 A JP 2012223533A JP 2012223533 A JP2012223533 A JP 2012223533A JP 2013083258 A JP2013083258 A JP 2013083258A
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Japan
Prior art keywords
presser
side wall
injection nozzle
presser foot
screw opening
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Pending
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JP2012223533A
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Japanese (ja)
Inventor
Wolfgang Christgen
クリストゲン ヴォルフガング
Junichi Ichikawa
純一 市河
Ralph Teichgraeber
タイヒグレーバー ラルフ
Carius Juergen
カリウス ユルゲン
Markus Wiedmann
ヴィートマン マークス
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Schaeffler Technologies AG and Co KG
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Schaeffler Technologies AG and Co KG
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Publication of JP2013083258A publication Critical patent/JP2013083258A/en
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    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/03—Fuel-injection apparatus having means for reducing or avoiding stress, e.g. the stress caused by mechanical force, by fluid pressure or by temperature variations
    • 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
    • F02M2200/803—Fuel injection apparatus manufacture, repair or assembly using clamp elements and fastening means; e.g. bolts or screws
    • 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
    • F02M2200/8053—Fuel injection apparatus manufacture, repair or assembly involving mechanical deformation of the apparatus or parts thereof
    • 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
    • F02M2200/855—Mounting of fuel injection apparatus using clamp elements or fastening means, e.g. bolts or screws

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

Abstract

PROBLEM TO BE SOLVED: To create a very inexpensive clamping claw which can withstand a high load.SOLUTION: The clamping claw 1 for the fuel injection nozzle of an internal engine is formed of a thin steel plate by blanking and bending work technology and includes two vertically erected sidewalls 2. Upper faces 3 of both sidewalls 2 are bridged by a lateral beam 5 including a screw opening 6 at the section of an intermediate part 4 in the longitudinal direction, and thus, the sectional shape of an inverted U-shape is formed in a cross sectional view. Each of ends 9, 12 is provided to be opened in a fork shape, and the lower face 7 of the sidewall 2 is provided as a fastening face at the end face 8 of the sidewall 2.

Description

本発明は、特に内燃機関の燃料噴射ノズルに対する押さえに関する。   The present invention particularly relates to a presser for a fuel injection nozzle of an internal combustion engine.

質的制御されるかまたは量的制御される内燃機関の燃料噴射ノズルに対する押さえは公知である。この公知の押さえは、一次成形技術的に鋳造によって製造されているかまたは二次成形技術的に鍛造によって製造されている。この押さえは過度に大きな重量を有している。この押さえの製造プロセスは、大量生産において過度に高価であると見なされる。また、比較的僅かな寸法安定性が付与されている。それに加えて、通常、さらに切削による後加工プロセスが行われなければならない。   A hold on a fuel injection nozzle of an internal combustion engine that is qualitatively or quantitatively controlled is known. This known presser is manufactured by casting in the primary molding technique or by forging in the secondary molding technique. This presser has an excessively large weight. This presser manufacturing process is considered excessively expensive in mass production. In addition, relatively little dimensional stability is imparted. In addition, usually a further post-processing process by cutting must be performed.

したがって、本発明の課題は、高い負荷に耐えられる極めて廉価な押さえを創出することである。   Accordingly, the object of the present invention is to create a very inexpensive hold that can withstand high loads.

この課題を解決するために本発明に係る押さえによれば、該押さえが、肉薄の鋼板から打抜き・曲げ加工技術的に形成されていて、直立した２つの側壁を有しており、両側壁の上面が、その長手方向中間の区分において、ねじ開口を備えた横方向梁によって橋渡しされており、これによって、横断面図で見て、逆Ｕ字形の断面形状が付与されており、各端部が、フォーク状に開いて付与されており、側壁の下面が、側壁の終端面のところで緊締面として付与されている。   In order to solve this problem, according to the presser according to the present invention, the presser is formed from a thin steel plate in terms of punching and bending technology, and has two side walls that are upright. The upper surface is bridged by a transverse beam with a screw opening at its longitudinal middle section, thereby giving an inverted U-shaped cross-section, as seen in the cross-sectional view, at each end However, the lower surface of the side wall is provided as a tightening surface at the end surface of the side wall.

本発明に係る押さえの有利な態様によれば、押さえに、切削による後加工が使用されていない。   According to the advantageous aspect of the presser according to the present invention, post-processing by cutting is not used for the presser.

本発明に係る押さえの有利な態様によれば、側壁に、一貫して等しい厚さが内在しており、つまり、側壁が、一貫して等しい厚さを有しており、側壁が、折り曲げられずに、ほぼ梁状に長手方向に延びている。   According to an advantageous embodiment of the presser according to the invention, the side wall is inherently of equal thickness, i.e. the side wall has a consistently equal thickness and the side wall is bent. Instead, it extends in the longitudinal direction substantially in the form of a beam.

本発明に係る押さえの有利な態様によれば、側壁が、該側壁を結合する横方向梁で上面から離れる方向に膨出されている。   According to the advantageous aspect of the presser according to the present invention, the side wall is bulged in a direction away from the upper surface by a lateral beam connecting the side walls.

本発明に係る押さえの有利な態様によれば、側壁の緊締面のところの範囲が型押し加工されている。   According to the advantageous embodiment of the press according to the invention, the area at the side of the tightening surface of the side wall is embossed.

本発明に係る押さえの有利な態様によれば、ねじ開口が、横方向梁の中心に位置していて、打抜き加工されている。   According to an advantageous embodiment of the press according to the invention, the screw opening is located in the center of the transverse beam and is stamped.

本発明に係る押さえの有利な態様によれば、押さえが、その長手方向中心平面および横方向中心平面を基準として鏡像対称的である。   According to an advantageous embodiment of the presser according to the invention, the presser is mirror-image symmetric with respect to its longitudinal central plane and lateral central plane.

本発明に係る押さえの有利な態様によれば、押さえが、両端部で噴射ノズルとの接触のために設けられている。   According to an advantageous embodiment of the presser according to the invention, pressers are provided at both ends for contact with the injection nozzle.

本発明に係る押さえの有利な態様によれば、押さえが、一方の端部で噴射ノズルとの接触のために設けられていて、他方の端部で、内燃機関のシリンダヘッドを起点として延びる支持面との接触のために設けられている。   According to an advantageous embodiment of the presser according to the invention, the presser is provided for contact with the injection nozzle at one end and extends at the other end starting from the cylinder head of the internal combustion engine Provided for contact with the surface.

本発明に係る押さえの有利な態様によれば、ねじ開口の取囲み範囲が、残りの押さえ範囲よりも著しく少ない表面粗さを有している。   According to the advantageous embodiment of the presser according to the invention, the surrounding area of the screw opening has a surface roughness significantly less than the remaining presser range.

本発明によれば、前述した課題は、緊締ジョーとも呼ばれる押さえが、肉薄の鋼板から打抜き・曲げ加工技術的に形成されており、両側壁の上面が、その長手方向中間の区分において、ねじ開口を備えた、有利には膨出された横方向梁によって橋渡しされており、これによって、横断面図で見て、逆Ｕ字形の断面形状が形成されており、各端部が、フォーク状に開いており、側壁の下面が、開いた終端面のところで緊締面として付与されていることによって解決される。   According to the present invention, the above-described problem is that the presser, also called a clamping jaw, is formed from a thin steel plate in terms of punching and bending technology, and the upper surfaces of both side walls have screw openings in the middle section in the longitudinal direction. Are bridged by an advantageously bulged lateral beam, whereby an inverted U-shaped cross-section is formed in the cross-sectional view, each end being in the form of a fork This is solved by being open and the lower side of the side wall being applied as a clamping surface at the open end face.

したがって、前述した欠点なしに、ジオメトリ（幾何学形状）に関して極めて単純に形成された押さえが提供されている。鋼板として、たとえば肌焼き／浸炭窒化されて、次いで、焼き戻しされた肌焼き鋼が可能である。この肌焼き鋼の肉薄性にもかかわらず、押さえは優れた剛性を有している。また、良好な寸法安定性を獲得することができ、これによって、切削による後加工または別の後加工を通常省略することができる。請求項１に記載の「緊締面」とは、緊締したいただ１つの噴射ノズルしか備えない態様では、シリンダヘッドまたはシリンダヘッドに結合された構成部材に対する載着面として機能する面も意味している（以下の説明参照）。   Thus, without having the disadvantages described above, a press is provided that is very simply formed with respect to geometry. As the steel plate, for example, case hardening / carbonitrided and then tempered case hardening steel is possible. Despite the thinness of this case-hardened steel, the presser has excellent rigidity. Also, good dimensional stability can be obtained, whereby post-processing by cutting or another post-processing can usually be omitted. The term “tightening surface” according to claim 1 also means a surface that functions as a mounting surface for a cylinder head or a component connected to the cylinder head in a mode in which only one injection nozzle is tightened. (See description below).

本発明に係る押さえの側壁は、クランク状に折り曲げられていない完全に平滑壁状の経過を有している。このことは、構成部材簡略化にさらに貢献している。   The side wall of the presser according to the present invention has a completely smooth wall shape that is not bent into a crank shape. This further contributes to simplification of the constituent members.

本発明の別の具体的な態様によれば、ねじ開口を打抜き加工することが提案されている。このことは、ブランク／金属薄板帯材からの押さえの本来の打抜き・曲げ加工プロセスの間に一緒に実現される。ねじ開口の取囲み範囲は、有利には比較的僅かな粗さ（≦Ｒａ３．２）を備えて形成されており、これによって、組付けにおいて切欠き係数が最小化されている。   According to another specific aspect of the invention, it has been proposed to punch the screw openings. This is achieved together during the original stamping and bending process of the press from the blank / metal strip. The surrounding area of the screw opening is preferably formed with a relatively slight roughness (≦ Ra3.2), which minimizes the notch factor in the assembly.

本発明の更なる態様では、側壁の緊締面のところの範囲を付加的に型押し加工することが提案されている。したがって、この重要な機能範囲に良好な寸法安定性と高い表面品質とが付与されている。   In a further aspect of the invention, it is proposed to additionally emboss the area at the fastening surface of the side wall. Therefore, good dimensional stability and high surface quality are imparted to this important functional range.

押さえは、ただ１つの噴射ノズルをシリンダヘッドに緊締するために設計することができる。しかし、これに関して、各端部にそれぞれ１つの噴射ノズルを位置固定することも同様に提案されている。たとえば本発明に係る押さえの取扱いおよび組付けに関して、押さえをその長手方向中心平面および横方向中心平面を基準として鏡像対称的に形成することが有利である。したがって、たとえば、ただ１つの噴射ノズルを緊締するための態様では、押さえのうちのどちらの端部をシリンダヘッドに接触させ、どちらの端部を噴射ノズルに係合させるかは重要とならない。   The presser can be designed to clamp only one injection nozzle to the cylinder head. However, in this regard, it has also been proposed to fix the position of one injection nozzle at each end. For example, with respect to the handling and assembly of the presser according to the present invention, it is advantageous to form the presser with a mirror image symmetry with respect to its longitudinal center plane and lateral center plane. Therefore, for example, in an aspect for tightening only one injection nozzle, it does not matter which end of the press is brought into contact with the cylinder head and which end is engaged with the injection nozzle.

本発明に係る押さえは、噴射技術／エンジン構造以外、一般的には、ワークピースを位置固定するための機械構造またはこれに類する分野等に使用されてもよい。   The presser according to the present invention may be used for a machine structure for fixing the position of a workpiece or a field similar thereto, in general, other than the injection technology / engine structure.

燃料噴射ノズルに対する押さえの立体図である。It is a three-dimensional figure of the press with respect to a fuel injection nozzle. １つの噴射ノズルに係合した押さえの概略的な組付け図である。It is a schematic assembly drawing of the presser engaged with one injection nozzle. ２つの噴射ノズルに作用した押さえの概略的な組付け図である。It is a rough assembly figure of the presser which acted on two injection nozzles.

以下に、本発明を実施するための形態を図面につき詳しく説明する。   In the following, embodiments for carrying out the present invention will be described in detail with reference to the drawings.

図１には、内燃機関の燃料噴射ノズル１０に対する押さえ１が示してある。この押さえ１は肉薄の鋼板から成っていて、切削による後加工なしに、打抜き・曲げ加工技術的に形成されている。   FIG. 1 shows a presser 1 for a fuel injection nozzle 10 of an internal combustion engine. This presser 1 is made of a thin steel plate, and is formed by punching / bending technology without post-processing by cutting.

押さえ１は、真っ直ぐに延びる直立した２つの側壁２を有している。両側壁２の上面３はその長手方向中間４の区分において、側壁２に一体に結合された横方向梁５によって橋渡しされている。なお、この横方向梁５は中心のねじ開口６を備えている。したがって、横断面図で見て、長手方向中間４の区分に逆Ｕ字形の断面形状が付与されている。認めることができるように、側壁２は、両側壁２を結合する横方向梁５で上面３から離れる方向に膨出されている。   The presser 1 has two upright side walls 2 extending straight. The upper surfaces 3 of the side walls 2 are bridged by transverse beams 5 which are integrally joined to the side walls 2 in the longitudinal middle 4 section. The transverse beam 5 has a central screw opening 6. Therefore, as viewed in the transverse cross-sectional view, an inverted U-shaped cross-sectional shape is given to the section in the longitudinal middle 4. As can be seen, the side walls 2 are bulged away from the top surface 3 by transverse beams 5 joining the side walls 2.

押さえ１の各端部９，１２はフォーク状にもしくは二又に開いている。側壁２の下面７は、側壁２の終端面８のところで、つまり、終端面８に隣接した範囲で緊締面として形成されている。この範囲は付加的に型押し加工されている。   Each end 9, 12 of the presser 1 is open in a fork shape or bifurcatedly. The lower surface 7 of the side wall 2 is formed as a tightening surface at the end surface 8 of the side wall 2, that is, in a range adjacent to the end surface 8. This range is additionally stamped.

図２では、押さえ１が一方の端部９で噴射ノズル１０に接触している。他方の端部１２で押さえ１は、内燃機関のシリンダヘッド１４を起点として延びる支持面１１に載置されている。   In FIG. 2, the presser 1 is in contact with the injection nozzle 10 at one end 9. The presser 1 at the other end 12 is placed on a support surface 11 extending from a cylinder head 14 of the internal combustion engine.

図３では、押さえ１が、その各端面９，１２で噴射ノズル１０に接触するために働く。このためには、押さえ１が、各噴射ノズル１０に設けられた溝１３内に係合し、この溝１３の下面に支持される。   In FIG. 3, the presser 1 works to contact the injection nozzle 10 at its end faces 9 and 12. For this purpose, the presser 1 is engaged in a groove 13 provided in each injection nozzle 10 and supported by the lower surface of the groove 13.

さらに、図２および図３から明らかであるように、押さえ１は、そのねじ開口６に装着されたねじ締結手段１５によって相応にシリンダヘッド１４に結合されている。したがって、ねじ締結手段１５が所要の押さえ力を加えている。   Furthermore, as is clear from FIGS. 2 and 3, the presser 1 is correspondingly coupled to the cylinder head 14 by means of screw fastening means 15 mounted in its screw opening 6. Therefore, the screw fastening means 15 applies a required pressing force.

１ 押さえ
２ 側壁
３ 上面
４ 長手方向中間
５ 横方向梁
６ ねじ開口
７ 下面または緊締面
８ 終端面
９ 一方の端部
１０ 燃料噴射ノズル
１１ 支持面
１２ 他方の端部
１３ 溝
１４ シリンダヘッド
１５ ねじ締結手段 DESCRIPTION OF SYMBOLS 1 Press 2 Side wall 3 Upper surface 4 Longitudinal middle 5 Lateral beam 6 Screw opening 7 Lower surface or tightening surface 8 Terminal surface 9 One end 10 Fuel injection nozzle 11 Support surface 12 The other end 13 Groove 14 Cylinder head 15 Screw fastening means

Claims (10)

特に内燃機関の燃料噴射ノズルに対する押さえ（１）において、該押さえ（１）が、肉薄の鋼板から打抜き・曲げ加工技術的に形成されていて、直立した２つの側壁（２）を有しており、両側壁（２）の上面（３）が、その長手方向中間（４）の区分において、ねじ開口（６）を備えた横方向梁（５）によって橋渡しされており、これによって、横断面図で見て、逆Ｕ字形の断面形状が付与されており、各端部（９，１２）が、フォーク状に開いて付与されており、側壁（２）の下面（７）が、側壁（２）の終端面（８）のところで緊締面として付与されていることを特徴とする、押さえ。   In particular, in the presser (1) for the fuel injection nozzle of the internal combustion engine, the presser (1) is formed from a thin steel plate in terms of stamping and bending technology, and has two upstanding side walls (2). The upper surface (3) of the side walls (2) is bridged by a transverse beam (5) with a screw opening (6) in its longitudinal middle (4) section, whereby a cross-sectional view , A reverse U-shaped cross-sectional shape is provided, each end (9, 12) is provided open in a fork shape, and the lower surface (7) of the side wall (2) is provided on the side wall (2 A presser, characterized in that it is provided as a tightening surface at the end surface (8). 押さえ（１）に、切削による後加工が使用されていない、請求項１記載の押さえ。   The presser according to claim 1, wherein post-processing by cutting is not used for the presser (1). 側壁（２）に、一貫して等しい厚さが内在しており、側壁（２）が、折り曲げられずに、ほぼ梁状に長手方向に延びている、請求項１記載の押さえ。   The presser foot according to claim 1, wherein the side wall (2) is inherently of equal thickness, and the side wall (2) extends in a longitudinal direction in a substantially beam shape without being folded. 側壁（２）が、該側壁（２）を結合する横方向梁（５）で上面（３）から離れる方向に膨出されている、請求項１記載の押さえ。   The presser foot according to claim 1, wherein the side wall (2) is bulged in a direction away from the upper surface (3) by a lateral beam (5) connecting the side wall (2). 側壁（２）の緊締面（７）のところの範囲が型押し加工されている、請求項１記載の押さえ。   2. The presser according to claim 1, wherein the area of the tightening surface (7) of the side wall (2) is stamped. ねじ開口（６）が、横方向梁（５）の中心に位置していて、打抜き加工されている、請求項１記載の押さえ。   The presser foot according to claim 1, wherein the screw opening (6) is located in the center of the transverse beam (5) and is stamped. 押さえ（１）が、その長手方向中心平面および横方向中心平面を基準として鏡像対称的である、請求項１記載の押さえ。   The presser foot according to claim 1, wherein the presser foot (1) is mirror-image symmetric with respect to the longitudinal center plane and the lateral center plane. 押さえ（１）が、両端部（９，１２）で噴射ノズル（１０）との接触のために設けられている、請求項１記載の押さえ。   The presser according to claim 1, wherein the presser (1) is provided for contact with the injection nozzle (10) at both ends (9, 12). 押さえ（１）が、一方の端部（９）で噴射ノズル（１０）との接触のために設けられていて、他方の端部（１２）で、内燃機関のシリンダヘッド（１４）を起点として延びる支持面（１１）との接触のために設けられている、請求項１記載の押さえ。   A presser (1) is provided at one end (9) for contact with the injection nozzle (10), and the other end (12) starts from the cylinder head (14) of the internal combustion engine. 2. A presser according to claim 1, provided for contact with an extended support surface (11). ねじ開口（６）の取囲み範囲が、残りの押さえ範囲よりも著しく少ない表面粗さを有している、請求項１または６記載の押さえ。   The presser foot according to claim 1 or 6, wherein the surrounding area of the screw opening (6) has a surface roughness significantly less than the remaining presser foot range.
JP2012223533A 2011-10-06 2012-10-05 Clamping claw for fuel injection nozzle Pending JP2013083258A (en)

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DE201110084064 DE102011084064A1 (en) 2011-10-06 2011-10-06 Downholder for a fuel injector
DE102011084064.8 2011-10-06

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CN103032231B (en) 2017-12-15

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