JPH082465Y2 - Fuel injection nozzle fixing mechanism - Google Patents
Fuel injection nozzle fixing mechanismInfo
- Publication number
- JPH082465Y2 JPH082465Y2 JP7436889U JP7436889U JPH082465Y2 JP H082465 Y2 JPH082465 Y2 JP H082465Y2 JP 7436889 U JP7436889 U JP 7436889U JP 7436889 U JP7436889 U JP 7436889U JP H082465 Y2 JPH082465 Y2 JP H082465Y2
- Authority
- JP
- Japan
- Prior art keywords
- bridge
- fuel injection
- injection nozzle
- cylinder head
- cylindrical surface
- 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 - Lifetime
Links
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は内燃機関における燃料噴射ノズルの固定機構
に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a fixing mechanism for a fuel injection nozzle in an internal combustion engine.
（従来の技術） 従来のこの種固定機構の１例が第５図及び第６図に示
されている。(Prior Art) An example of a conventional fixing mechanism of this type is shown in FIGS.
第５図において、１はシリンダ、２はピストン、３は
シリンダヘッド、４は燃料噴射ノズル、５はガスケッ
ト、６はピストンリング、７は燃焼室、８はブリッジ、
９はボルト、11は駒、12は皿ばねである。In FIG. 5, 1 is a cylinder, 2 is a piston, 3 is a cylinder head, 4 is a fuel injection nozzle, 5 is a gasket, 6 is a piston ring, 7 is a combustion chamber, 8 is a bridge,
9 is a bolt, 11 is a piece, and 12 is a disc spring.
燃料噴射ノズル４はその先端がシリンダヘッド３に穿
設された孔13内に差し込まれ、その露出端の周壁には互
いに対向するように一双の切り欠き4aが刻設されてい
る。これら切り欠き4aをブリッジ８の前端に形成された
スリット8a内に嵌合して切り欠き4aの底面4bにブリッジ
８の前端部下面8bを当接させるとともにこのブリッジ８
の後端部下面8cをシリンダヘッド３の上面に当接させ、
ボルト９を複数の皿ばね12、駒11及びブリッジ８の中央
部に穿設されたボルト孔8dを貫通させてその先端螺糸部
9aをシリンダヘッド３に穿設されたねじ孔10に螺入する
ことによって燃料噴射ノズル４を固定する。The tip of the fuel injection nozzle 4 is inserted into a hole 13 formed in the cylinder head 3, and a pair of notches 4a are formed in the peripheral wall of the exposed end so as to face each other. These notches 4a are fitted in the slits 8a formed at the front end of the bridge 8 so that the bottom surface 4b of the notches 4a is brought into contact with the lower surface 8b of the front end of the bridge 8 and the bridge 8
The rear end lower surface 8c is brought into contact with the upper surface of the cylinder head 3,
The bolt 9 is passed through a plurality of disc springs 12, a piece 11 and a bolt hole 8d formed in the central portion of the bridge 8 so that the tip thread portion thereof is formed.
The fuel injection nozzle 4 is fixed by screwing 9a into the screw hole 10 formed in the cylinder head 3.
ブリッジ８の中央上面にはボルト孔8dの中心線上に曲
率中心を持つ球面8eが形成され、駒11の下面はこの球面
8eと合致する球面11aとされている。また、ブリッジ８
の前端部下面8bは下に凸の円筒面とされ、後端部下面8c
は下に凸の円筒面とされている。A spherical surface 8e having a center of curvature is formed on the center upper surface of the bridge 8 on the center line of the bolt hole 8d, and the lower surface of the bridge 11 is formed by the spherical surface 8e.
It is a spherical surface 11a that matches 8e. Also, bridge 8
The lower surface 8b of the front end is a cylindrical surface convex downward, and the lower surface 8c of the rear end is
Is a cylindrical surface convex downward.
しかして、シリンダヘッド３と燃料噴射ノズル４との
間に熱膨張差が発生したとき、ブリッジ８が傾転し、か
つ、皿ばね12が伸縮することによりこの熱膨張差を吸収
するようになっている。When a difference in thermal expansion occurs between the cylinder head 3 and the fuel injection nozzle 4, the bridge 8 tilts and the disc spring 12 expands and contracts to absorb the difference in thermal expansion. ing.
（考案が解決しようとする課題） 上記従来の機構においては、ブリッジ８を鍛造し、こ
れに球面8e、円筒面8b、8cを精密加工によって形成しな
ければならないとともに駒11及び複数の皿ばね12を要す
るので、コストが嵩むという問題があった。(Problems to be Solved by the Invention) In the above-mentioned conventional mechanism, the bridge 8 must be forged, and the spherical surface 8e and the cylindrical surfaces 8b and 8c must be formed by precision machining, and the piece 11 and the plurality of disc springs 12 must be formed. Therefore, there is a problem that the cost increases.
（課題を解決するための手段） 本考案は上記課題を解決するために提案されたもので
あって、その要旨とするところは、先端がシリンダヘッ
ドに穿設された孔内に差し込まれ露出端の周壁に互いに
対向する切り欠きが刻設された燃料噴射ノズルと、板金
をプレス成形することによって構成された所定の間隔を
隔てて平行に立ち上がる一双の立上り部とこれらの下端
を互いに連結する架橋部からなる断面Ｕ字状のブリッジ
と、上記ブリッジの一双の立上り部の中央部上面上に載
置される駒と、この駒の中央部に穿設されたボルト穴及
び上記架橋部の中央部に穿設されたボルト穴をこの順に
貫通して先端螺糸部が上記シリンダヘッドに穿設された
ねじ孔に螺入されるボルトを具え、上記ブリッジの架橋
部にその前端縁中央から長手方向に伸び上記切り欠きが
嵌合するスリットを形成し、その前端部下面に上記切り
欠きの底面に当接する下方に凸の円筒面を形成し、か
つ、後端部下面に上記シリンダヘッドの上面に当接する
下方に凸の円筒面を形成し、上記ブリッジの一双の立上
り部の中央部上面には上記駒の下面に形成された円筒面
に整合する上方に凸に円筒面を形成したことを特徴とす
る燃料噴射ノズルの固定機構にある。(Means for Solving the Problems) The present invention has been proposed to solve the above problems, and the gist of the present invention is that the tip is inserted into a hole formed in the cylinder head to expose the end. A fuel injection nozzle in which notches facing each other are engraved on the peripheral wall, a pair of rising portions that rise in parallel and are formed by press-forming a metal plate at predetermined intervals, and a bridge that connects these lower ends to each other. A bridge having a U-shaped cross section, a piece placed on the upper surface of the central part of the rising part of the bridge, and a bolt hole formed in the central part of the piece and the central part of the bridge part. A bolt is provided which passes through the drilled bolt holes in this order and is screwed into the screw hole drilled in the cylinder head so that the tip threaded portion extends in the longitudinal direction from the center of its front end edge to the bridge portion of the bridge. Growth above A slit into which the notch fits is formed, a downwardly convex cylindrical surface that contacts the bottom surface of the notch is formed on the lower surface of the front end, and a lower surface that contacts the upper surface of the cylinder head on the lower surface of the rear end. Fuel injection characterized in that a convex cylindrical surface is formed on the upper surface of the central part of the rising part of the bridge of the bridge, and a convex cylindrical surface is formed on the upper surface of the center of the bridge to match the cylindrical surface formed on the lower surface of the bridge. It is in the nozzle fixing mechanism.
（作用） 本考案においては、上記構成を具えているため、燃料
噴射ノズルの先端をシリンダヘッドに穿設された孔内に
差し込み、切り欠きをブリッジのスリット内に嵌合して
この切り欠きの底面に架橋部の前端部下面に形成された
円筒面を当接させるとともに架橋部の後端下面に形成さ
れた円筒面をシリンダヘッドの上面に当接させ、一双の
立上り部の中央部上面に形成された円筒面上に駒を載置
し、ボルトを駒の中央部に穿設されたボルト穴及び架橋
部の中央部に穿設されたボルト穴をこの順に貫通させて
その先端螺糸部をシリンダヘッドに穿設されたねじ穴に
螺入することによって燃料噴射ノズルが固定される。(Operation) Since the present invention has the above-mentioned structure, the tip of the fuel injection nozzle is inserted into the hole formed in the cylinder head, and the notch is fitted into the slit of the bridge so that the notch The bottom surface is contacted with the cylindrical surface formed on the lower surface of the front end of the bridge portion, and the cylindrical surface formed on the lower surface of the rear end of the bridge portion is contacted with the upper surface of the cylinder head. A piece is placed on the formed cylindrical surface, and the bolt is passed through the bolt hole formed in the central portion of the piece and the bolt hole formed in the central portion of the bridge portion in this order, and the tip screw portion is The fuel injection nozzle is fixed by being screwed into the screw hole formed in the cylinder head.
（実施例） 本考案の１実施例が第１図ないし第４図に示されてい
る。(Embodiment) One embodiment of the present invention is shown in FIGS.
ブリッジ20は板金をプレス成形することによって断面
Ｕ字状とされ、所定の間隔を隔てて互いに平行に立ち上
がる一双の立上り部21、21とこれらの下端を互いに連結
する架橋部22を具えている。架橋部22にはその前端縁中
央から長手方向に伸びるスリット23が形成され、その中
央部にボルト穴24が穿設されている。また、前端部下面
は下方に凸の円筒面25とされ、後端部下面は下方に凸の
円筒面26とされている。そして、一双の立上り部21、21
の中央部上面は上方に凸の円筒面27とされている。The bridge 20 has a U-shaped cross section formed by press-molding a metal plate, and includes a pair of rising portions 21 and 21 standing parallel to each other at a predetermined distance and a bridge portion 22 connecting their lower ends to each other. A slit 23 extending in the longitudinal direction from the center of the front edge of the bridge portion 22 is formed, and a bolt hole 24 is formed in the center portion. Further, the lower surface of the front end portion is a cylindrical surface 25 protruding downward, and the lower surface of the rear end portion is a cylindrical surface 26 protruding downward. And the rising parts 21, 21 of Isso
The upper surface of the central portion of the is a cylindrical surface 27 that is convex upward.
これら一対の円筒面27上にはこれにまたがるように方
形の駒28が載置され、この駒28の下面にはその両側縁に
沿って上記円筒面27に整合する円筒面29が刻設され、か
つ、その中央部にはボルト穴30が穿設されている。31は
ブリッジ20を締結するためのボルトである。A rectangular piece 28 is placed on the pair of cylindrical surfaces 27 so as to straddle the cylindrical surface 27, and the lower surface of the piece 28 is engraved with cylindrical surfaces 29 aligned with the cylindrical surface 27 along both side edges thereof. And, a bolt hole 30 is bored in the center thereof. 31 is a bolt for fastening the bridge 20.
しかして、燃料噴射ノズル４は従来と同様にその先端
がシリンダヘッド３に穿設された孔13内に差し込まれ
る。次いで、この燃料噴射ノズル４の露出端に刻設され
た切り欠き4aをブリッジ20のスリット23内に嵌合して切
り欠き4aの底面4bに円筒面25を当接させるとともに円筒
面26をシリンダヘッド３の上面に当接させる。しかる
後、ボルト31を駒28のボルト穴30及びブリッジ20のボル
ト穴24をこの順に貫通させて、その先端螺糸部32をシリ
ンダヘッド３に穿設されたねじ孔10に螺入する。Then, the tip of the fuel injection nozzle 4 is inserted into the hole 13 formed in the cylinder head 3 as in the conventional case. Next, the cutout 4a formed on the exposed end of the fuel injection nozzle 4 is fitted into the slit 23 of the bridge 20 so that the bottom surface 4b of the cutout 4a is brought into contact with the cylindrical surface 25 and the cylindrical surface 26 is formed into a cylinder. It is brought into contact with the upper surface of the head 3. Then, the bolt 31 is passed through the bolt hole 30 of the bridge 28 and the bolt hole 24 of the bridge 20 in this order, and the tip thread portion 32 is screwed into the screw hole 10 formed in the cylinder head 3.
かくして、燃料噴射ノズル４はブリッジ20の弾発力に
よって押下されることにより固定される。Thus, the fuel injection nozzle 4 is fixed by being pushed down by the elastic force of the bridge 20.
シリンダヘッド３と燃料噴射ノズル４の熱膨張差又は
工作上の誤差等が生じたとき、これらはブリッジ20が撓
むと同時に傾転することによって吸収される。ブリッジ
20が傾転する際、円筒面27と円筒面29とが滑動し、円筒
面25、26は当接面に対して転動するので、ブリッジ20は
円滑に傾転する。When a difference in thermal expansion between the cylinder head 3 and the fuel injection nozzle 4 or an error in working occurs, these are absorbed by the bridge 20 bending and tilting at the same time. bridge
When 20 is tilted, the cylindrical surface 27 and the cylindrical surface 29 slide, and the cylindrical surfaces 25 and 26 roll with respect to the contact surface, so that the bridge 20 tilts smoothly.
（考案の効果） 本考案においては、ブリッジは板金をプレス成形する
ことによって製造されるので、従来の鍛造品からなるブ
リッジに比しコストを大巾に低減しうる。また、ブリッ
ジ自体が撓みうるので、従来必要とされた皿ばねが不要
となり、従って、部品点数が少なくなると同時に組立も
容易になるので、更に、コストを低減しうる。(Effect of the Invention) In the present invention, since the bridge is manufactured by press-forming a sheet metal, the cost can be greatly reduced as compared with the bridge made of the conventional forged product. Further, since the bridge itself can be bent, the disc spring which has been conventionally required is not required. Therefore, the number of parts can be reduced and the assembly can be facilitated at the same time, so that the cost can be further reduced.
第１図ないし第４図は本考案の１実施例を示し、第１図
は要部の斜視図、第２図は第１図のII−II線に沿う縦断
面図、第３図は第１図のIII−III線に沿う断面図、第４
図は第１図のIV−IV矢に沿う矢視図である。第５図及び
第６図は従来の機構の１例を示し、第５図は縦断面図、
第６図はブリッジの上面図である。 シリンダヘッド……３、孔……13、ねじ孔……10、燃料
噴射ノズル……４、切り欠き……4a、底面……4b、ブリ
ッジ……20、立上り部……21、架橋部……22、スリット
……23、ボルト穴……24、円筒面……25、26、27、駒…
…28、円筒面……29、ボルト穴……30、ボルト……31、
螺糸部……321 to 4 show one embodiment of the present invention. FIG. 1 is a perspective view of a main part, FIG. 2 is a vertical sectional view taken along the line II-II of FIG. 1, and FIG. Sectional view taken along line III-III in FIG.
The drawing is a view taken along the line IV-IV in FIG. 5 and 6 show an example of a conventional mechanism, and FIG. 5 is a longitudinal sectional view,
FIG. 6 is a top view of the bridge. Cylinder head …… 3, hole …… 13, screw hole …… 10, fuel injection nozzle …… 4, notch …… 4a, bottom surface …… 4b, bridge …… 20, rising section …… 21, bridge section …… 22, slit …… 23, bolt hole …… 24, cylindrical surface …… 25, 26, 27, piece…
28, cylindrical surface 29, bolt hole 30, bolt 31
Thread portion …… 32
Claims (1)
差し込まれ露出端の周壁に互いに対向する切り欠きが刻
設された燃料噴射ノズルと、板金をプレス成形すること
によって構成された所定の間隔を隔てて平行に立ち上が
る一双の立上り部とこれらの下端を互いに連結する架橋
部からなる断面Ｕ字状のブリッジと、上記ブリッジの一
双の立上り部の中央部上面上に載置される駒と、この駒
の中央部に穿設されたボルト穴及び上記架橋部の中央部
に穿設されたボルト穴をこの順に貫通して先端螺糸部が
上記シリンダヘッドに穿設されたねじ孔に螺入されるボ
ルトを具え、上記ブリッジの架橋部にその前端縁中央か
ら長手方向に伸び上記切り欠きが嵌合するスリットを形
成し、その前端部下面に上記切り欠きの底面に当接する
下方に凸の円筒面を形成し、かつ、後端部下面に上記シ
リンダヘッドの上面に当接する下方に凸の円筒面を形成
し、上記ブリッジの一双の立上り部の中央部上面には上
記駒の下面に形成された円筒面に整合する上方に凸に円
筒面を形成したことを特徴とする燃料噴射ノズルの固定
機構。1. A fuel injection nozzle having a tip inserted into a hole formed in a cylinder head and having notches facing each other formed on a peripheral wall of an exposed end, and a predetermined member formed by press-forming a metal plate. A bridge having a U-shaped cross section, which comprises a pair of rising parts that rise in parallel with a space between them and a bridging part connecting their lower ends to each other, and a piece placed on the upper surface of the central part of the one rising part of the bridge. Through the bolt hole formed in the central portion of the bridge and the bolt hole formed in the central portion of the bridging portion in this order, and the tip screw portion is screwed into the screw hole formed in the cylinder head. With a bolt to be inserted, a slit extending in the longitudinal direction from the center of the front edge of the bridge to which the notch fits is formed in the bridge portion of the bridge, and the lower surface of the front end portion that abuts the bottom surface of the notch and projects downward Cylindrical surface And a downwardly convex cylindrical surface abutting the upper surface of the cylinder head on the lower surface of the rear end, and a cylindrical surface formed on the lower surface of the bridge on the upper surface of the central part of the rising portion of the bridge A fixing mechanism for a fuel injection nozzle, characterized in that a cylindrical surface is formed to be convex upward so as to match with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7436889U JPH082465Y2 (en) | 1989-06-27 | 1989-06-27 | Fuel injection nozzle fixing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7436889U JPH082465Y2 (en) | 1989-06-27 | 1989-06-27 | Fuel injection nozzle fixing mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0317171U JPH0317171U (en) | 1991-02-20 |
| JPH082465Y2 true JPH082465Y2 (en) | 1996-01-29 |
Family
ID=31613999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7436889U Expired - Lifetime JPH082465Y2 (en) | 1989-06-27 | 1989-06-27 | Fuel injection nozzle fixing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH082465Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2921459B2 (en) | 1995-11-24 | 1999-07-19 | いすゞ自動車株式会社 | Engine injector mounting structure |
| KR100527700B1 (en) * | 2002-08-14 | 2005-11-09 | 현대자동차주식회사 | Clamp Assembly for Engaging Injector of Automobile |
| JP4484620B2 (en) * | 2004-08-02 | 2010-06-16 | 株式会社セノ | Fasteners for casters |
-
1989
- 1989-06-27 JP JP7436889U patent/JPH082465Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0317171U (en) | 1991-02-20 |
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