JPH08100705A - Attaching device for synthetic resin-made cylinder head cover - Google Patents
Attaching device for synthetic resin-made cylinder head coverInfo
- Publication number
- JPH08100705A JPH08100705A JP25910294A JP25910294A JPH08100705A JP H08100705 A JPH08100705 A JP H08100705A JP 25910294 A JP25910294 A JP 25910294A JP 25910294 A JP25910294 A JP 25910294A JP H08100705 A JPH08100705 A JP H08100705A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder head
- head cover
- cover
- synthetic resin
- vertical
- 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.)
- Pending
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 16
- 238000012856 packing Methods 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims description 23
- 239000002184 metal Substances 0.000 claims description 23
- 229920003002 synthetic resin Polymers 0.000 claims description 10
- 239000000057 synthetic resin Substances 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000008602 contraction Effects 0.000 abstract description 4
- 238000005192 partition Methods 0.000 description 8
- 238000000926 separation method Methods 0.000 description 8
- 239000003921 oil Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- -1 polypropylene Polymers 0.000 description 4
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920000800 acrylic rubber Polymers 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases
- F02F7/006—Camshaft or pushrod housings
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明はエンジンにおけるシリ
ンダヘッドカバー主として合成樹脂製のシリンダヘッド
カバーの取付装置の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a cylinder head cover mounting device for an engine, which is mainly made of a synthetic resin.
【０００２】[0002]
【従来の技術】エンジンに対するシリンダヘッドカバー
は図３，図４のようにシリンダヘッドＨ上に取付けら
れ、シリンダヘッドＨ上に配設されるロッカアームａや
弁棒ｂ，カムシャフトｃ等からなる動弁機構Ｍが塵埃や
水滴で汚染するのを防いでおり、最近ではエンジンの軽
量化のために多くが合成樹脂（ポリアミド，ポリプロピ
レン，ポリブチレンテレフタレート等）で作られ、又シ
リンダヘッドカバー１の内側には天井壁１ａに沿って合
成樹脂又は鉄板製の中仕切板２が設けられて分離室３が
形成され、その分離室３内において天井壁１ａと中仕切
板２に複数の下向き，上向きの衝突板４ａ，４ｂが交互
に設けられ、中仕切板２は一側部にブローバイガスの入
口２ａを有すると共に他側部にはオイルのドレン２ｂを
備えていて、エンジンの作動中に発生するブローバイガ
スを分離室３に導いて、ガス中に含まれているオイルを
分離する一方、オイルの除かれたガスをカバー他側部の
出口パイプ５から吸気管側に戻すようにしている。2. Description of the Related Art A cylinder head cover for an engine is mounted on a cylinder head H as shown in FIGS. 3 and 4, and is a valve operating valve including a rocker arm a, a valve rod b, a cam shaft c, etc. disposed on the cylinder head H. The mechanism M is prevented from being contaminated with dust and water drops, and recently, in order to reduce the weight of the engine, most of them are made of synthetic resin (polyamide, polypropylene, polybutylene terephthalate, etc.), and inside the cylinder head cover 1. A partition wall 2 made of synthetic resin or an iron plate is provided along the ceiling wall 1a to form a separation chamber 3, and a plurality of downward and upward collision plates for the ceiling wall 1a and the partition wall 2 are formed in the separation chamber 3. 4a and 4b are provided alternately, and the partition plate 2 has a blow-by gas inlet 2a on one side and an oil drain 2b on the other side. Blow-by gas generated during the operation of is separated into the separation chamber 3 to separate the oil contained in the gas, while the oil-free gas is returned from the outlet pipe 5 on the other side of the cover to the intake pipe side. I am trying.
【０００３】そして、図５，図６のようにシリンダヘッ
ドカバー１の周壁１ｂの下面には、アクリルゴム，シリ
コンゴム，アクリロニトリルブタジェンゴム等の帯状の
弾性パッキング材６が下端部をカバー下面から突出する
状態に圧入装着されており、又四方の周壁１ｂの下面に
は外方に張り出す複数のフランジ１ｃが間隔をおいて設
けられ、各フランジ１ｃに穿設されたねじ挿通用の縦通
孔１ｅには、フランジ部の肉厚より若干長く、鋼管のよ
うな硬質の金属からなる金属カラー７が、下端部がフラ
ンジ下面から突出する状態に圧入されていて、シリンダ
ヘッドカバー１はその周囲のフランジ１ｃがシリンダヘ
ッドＨのフランジ部に重ね合わされ、金属カラー７を通
してボルト８をシリンダヘッドＨのフランジ部にねじ込
むことにより、パッキング６を圧迫変形させながら金属
カラー７の下端をシリンダヘッドＨの上面に圧接させ、
カバー１とシリンダヘッドＨとの間に若干の隙間を形成
し、エンジンの振動がシリンダヘッドカバー１に伝わる
のを防ぎつつ、両者を気密に結合するようにしている。As shown in FIGS. 5 and 6, on the lower surface of the peripheral wall 1b of the cylinder head cover 1, a strip-shaped elastic packing material 6 such as acrylic rubber, silicon rubber, acrylonitrile butadiene rubber, etc. protrudes at the lower end from the lower surface of the cover. And a plurality of flanges 1c projecting outward are provided at intervals on the lower surface of the peripheral wall 1b on four sides, and a vertical through hole for screw insertion is formed in each flange 1c. A metal collar 7 made of a hard metal such as a steel pipe, which is slightly longer than the wall thickness of the flange portion, is press-fitted into 1e such that the lower end portion thereof projects from the lower surface of the flange. 1c is superposed on the flange portion of the cylinder head H, and the bolt 8 is screwed into the flange portion of the cylinder head H through the metal collar 7, thereby The lower end of the metal collar 7 is pressed against the upper surface of the cylinder head H while the King 6 is squeezed deformed,
A slight gap is formed between the cover 1 and the cylinder head H so that the vibration of the engine is prevented from being transmitted to the cylinder head cover 1 and the both are hermetically coupled.
【０００４】[0004]
【発明が解決しようとする課題】ところで、上記従来の
装置では、シリンダヘッドカバー１のフランジ１ｃに設
けられている縦通孔１ｅに金属カラー７が圧入され、孔
とカラーとの間に少しのクリアランスもないため、エン
ジン本体からの熱や、冬期や夏季におけるエンジンルー
ム内の冷え込み又は過熱によりシリンダヘッドカバー１
が収縮，膨張した際、カバー本体が取付け部における金
属カラー７に拘束され、締結部分に応力集中が生じ、遂
には亀裂が発生し使用でなくなってしまう。又、カバー
１のフランジ１ｃの縦通孔１ｅとシリンダヘッドＨのね
じ孔にずれがあるとボルト８の締め付けがやりにくい。By the way, in the above-mentioned conventional apparatus, the metal collar 7 is press-fitted into the vertical through hole 1e provided in the flange 1c of the cylinder head cover 1, and a slight clearance is provided between the hole and the collar. Cylinder head cover 1 due to heat from the engine body and cold or overheat in the engine room during winter and summer.
When contracted and expanded, the cover body is constrained by the metal collar 7 in the mounting portion, stress concentration occurs in the fastening portion, and finally cracks occur and it cannot be used. Further, if there is a deviation between the vertical through hole 1e of the flange 1c of the cover 1 and the screw hole of the cylinder head H, it is difficult to tighten the bolt 8.
【０００５】そこで、この発明は外界の温度変化により
シリンダヘッドカバーが収縮，膨張したにしても、その
収縮，膨張を吸収して、結合フランジ部に亀裂を作ら
ず、しかもカバーの縦通孔とヘッドのねじ孔とに多少の
ずれがあってもボルトの締め込みをやり易くすることを
目的とする。Therefore, according to the present invention, even if the cylinder head cover contracts or expands due to a change in the outside temperature, the contraction or expansion is absorbed, a crack is not formed in the coupling flange portion, and the vertical hole of the cover and the head are not formed. The purpose is to make it easy to tighten the bolts even if there is some deviation from the screw holes.
【０００６】[0006]
【課題を解決するための手段】上記目的達成のためにこ
の発明は、合成樹脂製のシリンダヘッドカバーの取付装
置として、合成樹脂からなるシリンダヘッドカバーの周
壁の下面に帯状の弾性パッキングを下に突出させて取付
けると共に周壁の下端には外方に張り出すフランジを設
け、フランジに穿設したねじ挿通用の縦通孔には、フラ
ンジの肉厚より若干長く外径が縦通孔の内径より若干小
さく外面の一部に弾性Ｏリングを取付けた金属カラー
を、それぞれ弾性Ｏリングを介し縦通孔の内面との間に
所定の間隔を形成しかつ下端部をフランジ下面から突出
させて嵌め込み装着し、該金属カラーにボルトを挿通し
てシリンダヘッドカバーをシリンダヘッドに対し取付け
ることを特徴としている。In order to achieve the above object, the present invention provides a device for mounting a synthetic resin cylinder head cover in which a strip-shaped elastic packing is projected downward on the lower surface of the peripheral wall of the synthetic resin cylinder head cover. A flange that extends outward is provided at the lower end of the peripheral wall, and the vertical hole for screw insertion that is drilled in the flange has an outer diameter that is slightly longer than the wall thickness of the flange and slightly smaller than the inner diameter of the vertical hole. A metal collar having an elastic O-ring attached to a part of its outer surface is fitted and mounted by forming a predetermined interval between the elastic O-ring and the inner surface of the vertical hole and projecting the lower end from the lower surface of the flange. It is characterized in that the cylinder head cover is attached to the cylinder head by inserting bolts into the metal collar.
【０００７】[0007]
【実施例】以下図１，図２を参照してこの発明の実施例
につき説明する。図１はエンジン上端部の横断面を示す
ものであり、１１は縦長な箱状のシリンダヘッドカバー
で、前記のようにポリアミド，ポリプロピレン，ポリブ
チレンテレフタレート等の合成樹脂で作られ、エンジン
の軽合金製のシリンダヘッドＨ上に後述のようにして取
付けられ、シリンダヘッドＨ上に配設されたロッカアー
ムａや弁棒ｂ，カムシャフトｃ等からなる動弁機構Ｍを
おおって、これが塵埃，水滴等により汚染するのを防い
でおり、それと共にシリンダヘッドカバー１１の内側に
は天井壁１１ａに沿って合成樹脂板やアルミ板，鉄板等
の中仕切板１２が架設されて分離室１３が形成され、そ
の分離室１３内において天井壁１１ａと中仕切板１２に
複数の下向き，上向きの衝突板１４ａ，１４ｂが交互に
設けられ、中仕切板１２は長手方向の一側部にブローバ
イガスの入口１２ａを有すると共に他側部にオイルのド
レン１２ｂを持っており、エンジンの作動中にその内部
に発生するブローバイガスを分離室１３に導いて、ガス
中に含まれているオイルを分離し、オイルの除かれたガ
スをカバー他側部に設けられた出口パイプ１５を通じ吸
気管側に戻すようになされている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a cross section of the upper end of the engine. Reference numeral 11 denotes a vertically long box-shaped cylinder head cover, which is made of a synthetic resin such as polyamide, polypropylene or polybutylene terephthalate as described above, and is made of a light alloy of the engine. Of the rocker arm a, the valve rod b, the cam shaft c, etc., which is mounted on the cylinder head H of the cylinder head H as will be described later, and is covered with dust, water droplets, or the like. It prevents contamination, and at the same time, a partition plate 12 such as a synthetic resin plate, an aluminum plate, or an iron plate is installed inside the cylinder head cover 11 along the ceiling wall 11a to form a separation chamber 13, and the separation chamber 13 is formed. In the chamber 13, a plurality of downward-facing and upward-facing collision plates 14a and 14b are alternately provided on the ceiling wall 11a and the middle partition plate 12, and the middle partition plate 12 is in the longitudinal direction. It has a blow-by gas inlet 12a on one side and an oil drain 12b on the other side. It guides the blow-by gas generated inside the engine during operation to the separation chamber 13 and is contained in the gas. The oil is separated, and the gas from which the oil has been removed is returned to the intake pipe side through the outlet pipe 15 provided on the other side of the cover.
【０００８】そして、シリンダヘッドカバー１１の四方
の周壁１１ｂの下面に所要深さの凹所１１ｄが角形環状
に形成され、その凹所１１ｄにはアクリゴム，シリコン
ゴム，アクリロニトリルブタジェンゴム等からなる帯状
の弾性パッキング１６が下端部をカバー下面から突出す
る状態に圧入又は一体成形により装着されており、又、
四方の周壁１１ｂの下端には外方に張り出す複数のフラ
ンジ１１ｃが所定の間隔をおいて設けられている。A recess 11d having a required depth is formed in a rectangular ring shape on the lower surface of the four circumferential walls 11b of the cylinder head cover 11, and the recess 11d has a strip-like shape made of acry rubber, silicone rubber, acrylonitrile butadiene rubber or the like. The elastic packing 16 is attached by press-fitting or integral molding so that the lower end portion projects from the lower surface of the cover.
A plurality of flanges 11c projecting outward are provided at predetermined intervals at the lower ends of the four peripheral walls 11b.
【０００９】各フランジ１１ｃには所定直径のねじ挿通
用の縦通孔１１ｅが設けられ、それらの縦通孔１１ｅ内
には、フランジ部の強度を保持するために鋼管のような
硬質の金属からなる金属カラー１７が嵌め込み装着され
るが、その金属カラー１７は図２のように長さがフラン
ジ１１ｃの肉厚より若干長い一方、外径が縦通孔１１ｅ
の内径より若干小さく、外面の一部（図では上部）にパ
ッキング１６と同じ材質の弾性Ｏリング１９が環状みぞ
１７ａに嵌め込んで取付けられていて、この弾性Ｏリン
グ１９を圧入する状態にして金属カラー１７は縦通孔１
１ｅに嵌め込まれ、金属カラー１７と縦通孔１１ｅの内
面との間に所定の間隔ｔが形成されている。Each flange 11c is provided with a vertical through hole 11e for inserting a screw having a predetermined diameter, and in each of the vertical through holes 11e, a hard metal such as a steel pipe is used to maintain the strength of the flange portion. The metal collar 17 is fitted and mounted. The metal collar 17 is slightly longer than the wall thickness of the flange 11c as shown in FIG.
The elastic O-ring 19 made of the same material as the packing 16 is fitted into the annular groove 17a and attached to a part of the outer surface (upper part in the figure) which is slightly smaller than the inner diameter. Metal collar 17 is vertical through hole 1
1e, and a predetermined gap t is formed between the metal collar 17 and the inner surface of the vertical through hole 11e.
【００１０】又、金属カラー１７は上端が各フランジ１
１ｃの上面に一致させられる一方、下端部が各フランジ
１１ｃの下面から突出するように各縦通孔１１ｅに装着
され、しかして、カバー周壁１１ｂの下端の各フランジ
１１ｃがシリンダヘッドＨ周縁のフランジ部に重ね合わ
され、締結用のボルト１８がワッシヤ２０介在のもとに
各金属カラー１７を通してシリンダヘッドＨに対しねじ
込まれ、そのねじ込みによりカバー周壁１１ｂ下面のパ
ッキング１６が圧縮変形（図２の点線から実線のよう
に）すると共に金属カラー１７の下端がシリンダヘッド
Ｈの上面に圧接して、シリンダヘッドカバー１１はシリ
ンダヘッドＨに対し少許の隙間を作りながら気密に取付
けられる。The metal collar 17 has an upper end on each flange 1.
1c is attached to each vertical through hole 11e so that the lower end thereof projects from the lower surface of each flange 11c, while each flange 11c at the lower end of the cover peripheral wall 11b is a flange at the peripheral edge of the cylinder head H. The fastening bolt 18 is screwed into the cylinder head H through each metal collar 17 with the washer 20 interposed, and the packing 16 on the lower surface of the cover peripheral wall 11b is compressed and deformed (from the dotted line in FIG. 2). (As indicated by the solid line), the lower end of the metal collar 17 is pressed against the upper surface of the cylinder head H, and the cylinder head cover 11 is airtightly attached to the cylinder head H while forming a small clearance.
【００１１】その際、カバーフランジ１１ｃの縦通孔１
１ｅとシリンダヘッドＨのねじ孔の設定位置に多少のず
れがあっても、金属カラー１７の周りの隙間により、そ
のずれを吸収してボルト１８を容易にねじ込むことがで
き、又シリンダヘッドカバー１１をシリンダヘッドＨ上
に結合した状態で、エンジン本体からの熱や、冬期や夏
季においてシリンダヘッドカバー１１が収縮したり、膨
張したりした際には、カバーの各フランジ１１ｃの縦通
孔１１ｅの内面と金属カラー１７との間に形成した所定
の隙間ｔとそこに介在させた弾性Ｏリング１９により、
カバー本体の収縮，膨張を適切に吸収することになり、
従来のようにカバー本体を拘束することがない。At this time, the vertical through hole 1 of the cover flange 11c
Even if there is a slight deviation in the setting positions of the screw holes of 1e and the cylinder head H, the gap around the metal collar 17 allows the deviation to be absorbed and the bolt 18 to be easily screwed in. When the cylinder head cover 11 is coupled to the cylinder head H, and when the cylinder head cover 11 contracts or expands in the winter or summer, the inner surface of the vertical through hole 11e of each flange 11c of the cover is By the predetermined gap t formed between the metal collar 17 and the elastic O-ring 19 interposed there,
It will properly absorb the contraction and expansion of the cover body,
Unlike the conventional case, the cover body is not constrained.
【００１２】なお、図示の例ではシリンダヘッドカバー
１１の内側に中仕切板１２を設けて、分離室１３を作
り、そこにエンジン内に生じるブローバイガスを導入し
て、ガスからオイルを分離するようにしたものを示した
が、必ずしもこのようにする必要はなく、又、図示の例
では、カバー周壁１１ｂの下端にフランジを複数張り出
すようにしたものを示したが、これは全周的に設けるよ
うにしてもよく、その場合には、複数の縦通孔１１ｅを
所定の位置に設けることになる。そして、周壁１１ｂ下
面のパッキング１６はボルト１８の締結部分では縦通孔
１１ｅを囲むように設けてもよい。In the illustrated example, a partition plate 12 is provided inside the cylinder head cover 11 to form a separation chamber 13, into which blow-by gas generated in the engine is introduced to separate oil from the gas. However, it is not necessary to do so, and in the illustrated example, a plurality of flanges are projected on the lower end of the cover peripheral wall 11b, but this is provided all around. However, in that case, a plurality of vertical through holes 11e are provided at predetermined positions. The packing 16 on the lower surface of the peripheral wall 11b may be provided so as to surround the vertical through hole 11e at the fastening portion of the bolt 18.
【００１３】[0013]
【発明の効果】この発明は合成樹脂製のシリンダヘッド
カバーの取付装置として、上述のように構成されている
ので、シリンダヘッドとの結合状態において、エンジン
本体からの熱や、冬期や夏季においてシリンダヘッドカ
バーが収縮したり、膨張したりした際には、周壁下端の
フランジに設けた縦通孔の内面と金属カラーの間の所定
の隙間及びそこに介在する弾性Ｏリングにより、カバー
本体の収縮，膨張を有効，適切に吸収することができ、
これまでのようにカバー本体を金属カラーによって拘束
することなく、フランジ部に過大な応力が生ぜず亀裂を
作る恐れがない。又、カバーフランジの縦通孔とシリン
ダヘッドのねじ孔の設定位置に多少のずれがあっても、
これを吸収してボルトの締め込みに支障をきたさない。Since the present invention is configured as described above as a mounting device for a cylinder head cover made of synthetic resin, when the cylinder head is connected to the cylinder head cover, heat from the engine body and the cylinder head cover during the winter or summer are provided. When contracts or expands, the cover body contracts and expands due to the predetermined gap between the inner surface of the vertical hole in the flange at the lower edge of the peripheral wall and the metal collar and the elastic O-ring interposed there. Can be effectively and properly absorbed,
As in the past, the cover body is not constrained by the metal collar, and there is no fear that excessive stress will be generated in the flange portion and a crack will be created. In addition, even if there is some deviation between the setting positions of the vertical hole of the cover flange and the screw hole of the cylinder head,
It absorbs this and does not hinder the tightening of the bolt.
【図１】この発明の実施例の横断面図。FIG. 1 is a cross-sectional view of an embodiment of the present invention.
【図２】カバー取付部分の拡大断面図。FIG. 2 is an enlarged cross-sectional view of a cover mounting portion.
【図３】従来装置の長手方向の断面図。FIG. 3 is a longitudinal sectional view of a conventional device.
【図４】従来装置の横断面図。FIG. 4 is a cross-sectional view of a conventional device.
【図５】従来のシリンダヘッドカバーの下面図。FIG. 5 is a bottom view of a conventional cylinder head cover.
【図６】従来のカバー取付部分の断面図。FIG. 6 is a cross-sectional view of a conventional cover mounting portion.
１１ シリンダヘッドカバー １１ａ 天井壁 １１ｂ 周囲壁 １１ｃ フランジ １１ｄ 凹所 １１ｅ 縦通孔 １２ 中仕切板 １３ 分離室 １６ 弾性パッキング １７ 金属カラー １８ ボルト １９ 弾性Ｏリング Ｈ シリンダヘッド 11 Cylinder Head Cover 11a Ceiling Wall 11b Peripheral Wall 11c Flange 11d Recess 11e Vertical Through Hole 12 Partition Plate 13 Separation Chamber 16 Elastic Packing 17 Metal Collar 18 Bolt 19 Elastic O-ring H Cylinder Head
Claims (1)
の周壁の下面に帯状の弾性パッキングを下に突出させて
取付けると共に周壁の下端には外方に張り出すフランジ
を設け、フランジに穿設したねじ挿通用の縦通孔には、
フランジの肉厚より若干長く外径が縦通孔の内径より若
干小さく外面の一部に弾性Ｏリングを取付けた金属カラ
ーを、それぞれ弾性Ｏリングを介し縦通孔の内面との間
に所定の間隔を形成しかつ下端部をフランジ下面から突
出させて嵌め込み装着し、該金属カラーにボルトを挿通
してシリンダヘッドカバーをシリンダヘッドに対し取付
けることを特徴とする合成樹脂製シリンダヘッドカバー
の取付装置。1. A cylinder head cover made of a synthetic resin is attached to a lower surface of a peripheral wall by protruding a band-like elastic packing downwardly, and a flange protruding outward is provided at a lower end of the peripheral wall for screw insertion. The vertical hole of
A metal collar with an outer diameter slightly larger than the wall thickness of the flange and slightly smaller than the inner diameter of the vertical hole is attached to the inner surface of the vertical hole through elastic O-rings. A mounting device for a cylinder head cover made of synthetic resin, characterized in that a space is formed and a lower end portion is protruded from a lower surface of the flange to be fitted and mounted, and a bolt is inserted through the metal collar to mount the cylinder head cover to the cylinder head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25910294A JPH08100705A (en) | 1994-09-29 | 1994-09-29 | Attaching device for synthetic resin-made cylinder head cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25910294A JPH08100705A (en) | 1994-09-29 | 1994-09-29 | Attaching device for synthetic resin-made cylinder head cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08100705A true JPH08100705A (en) | 1996-04-16 |
Family
ID=17329358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25910294A Pending JPH08100705A (en) | 1994-09-29 | 1994-09-29 | Attaching device for synthetic resin-made cylinder head cover |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08100705A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630488A (en) * | 2019-11-04 | 2019-12-31 | 宁波强生电机有限公司 | A pressure-stabilizing structure of a diaphragm pump |
| FR3133064A1 (en) * | 2022-02-25 | 2023-09-01 | Renault S.A.S | Motor vehicle comprising a cylinder head of simplified geometry |
-
1994
- 1994-09-29 JP JP25910294A patent/JPH08100705A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630488A (en) * | 2019-11-04 | 2019-12-31 | 宁波强生电机有限公司 | A pressure-stabilizing structure of a diaphragm pump |
| FR3133064A1 (en) * | 2022-02-25 | 2023-09-01 | Renault S.A.S | Motor vehicle comprising a cylinder head of simplified geometry |
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