JPH0144752Y2 - - Google Patents
Info
- Publication number
- JPH0144752Y2 JPH0144752Y2 JP1983095061U JP9506183U JPH0144752Y2 JP H0144752 Y2 JPH0144752 Y2 JP H0144752Y2 JP 1983095061 U JP1983095061 U JP 1983095061U JP 9506183 U JP9506183 U JP 9506183U JP H0144752 Y2 JPH0144752 Y2 JP H0144752Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder head
- cover
- head cover
- sound insulating
- vibration damping
- 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
Links
- 238000013016 damping Methods 0.000 claims description 22
- 238000009413 insulation Methods 0.000 description 18
- 230000000694 effects Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000001771 impaired effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Description
【考案の詳細な説明】
（産業上の利用分野）
この考案は、シリンダヘツドカバーの外方に遮
音カバーが配設されてなるエンジンのシリンダヘ
ツドカバー遮音構造に関するものである。[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a cylinder head cover sound insulation structure for an engine in which a sound insulation cover is disposed outside the cylinder head cover.
（従来技術）
従来のエンジンのシリンダヘツドカバー遮音構
造としては、例えば実開昭56−165926号公報に示
されたものがある。これはシリンダヘツドカバー
および遮音カバーに形成された貫通孔に係止具を
装着することによつて両カバー間に所定の間隙を
設け、かつ袋ナツトによつて両カバーを同時に固
定ボルトに対して固着するように構成されたもの
である。上記シリンダヘツドカバー、油洩れを防
止するために強固に締付ける必要があり、一方遮
音カバーは遮音性が損われない程度の力で締付け
なければならない。ところが、上記構造では両者
に対して同じ締付力を付与することになるために
油密に必要な力で締付けると係止具が強く押圧さ
れて変形し、両カバーの間隙が狭められるととも
に上記係止具の振動減衰機能が損損われ、遮音効
果が低下するという欠点がある。また、これを防
止するために締付力を弱めれば、シリンダヘツド
カバーの油密が損われるという問題があつた。(Prior Art) A conventional engine cylinder head cover sound insulation structure is disclosed in, for example, Japanese Utility Model Application No. 56-165926. This is achieved by attaching locking tools to through holes formed in the cylinder head cover and sound insulation cover to create a predetermined gap between both covers, and simultaneously attaching both covers to the fixing bolts using cap nuts. It is constructed to be fixed. The cylinder head cover must be firmly tightened to prevent oil leakage, while the sound insulation cover must be tightened with a force that does not impair the sound insulation properties. However, with the above structure, the same tightening force is applied to both, so if the locking tool is tightened with the force required for oil-tightness, the locking tool will be strongly pressed and deformed, narrowing the gap between both covers and causing the above-mentioned The disadvantage is that the vibration damping function of the locking device is impaired and the sound insulation effect is reduced. Furthermore, if the tightening force is weakened to prevent this, there is a problem in that the oil tightness of the cylinder head cover is impaired.
（考案の目的）
この考案は、以上の問題点を解決するためにな
されたものであり、極めて簡単な構造でシリンダ
ヘツドカバーからの油洩れを確実に防止すること
ができるとともに、優れた遮音効果が得られるエ
ンジンのシリンダヘツドカバー遮音構造を提供す
るものである。(Purpose of the invention) This invention was devised to solve the above problems.It has an extremely simple structure, can reliably prevent oil leakage from the cylinder head cover, and has an excellent sound insulation effect. The present invention provides a sound insulating structure for an engine cylinder head cover that provides the following.
（考案の構成）
この考案は、上記シリンダヘツドカバーに形成
した貫通孔に挿通される取付ボルトにより、該ボ
ルトの頭部とシリンダヘツドカバーとの間を油密
にシールするワツシヤを介してシリンダヘツドカ
バーをシリンダヘツドに固定し、かつ遮音カバー
にはシリンダヘツドカバーの貫通孔と対応した貫
通孔を形成し、該貫通孔の周縁部に上記ワツシヤ
を囲んで下面がシリンダヘツドカバーの上面に当
接するリング状の振動減衰部材を配設することに
より、上記シリンダヘツドカバーと遮音カバーと
の間に遮音用の間隙を形成するとともに、該振動
減衰部材の上面に当接する押板を配設し、上記取
付けボルトの頭部の上方に突設されたねじ部材に
螺合されるナツトにより押板および振動減衰部材
を介して遮音カバーを取付けるようにしたもので
ある。(Structure of the invention) This invention allows the cylinder head to be mounted via a washer that provides an oil-tight seal between the head of the bolt and the cylinder head cover by means of a mounting bolt that is inserted into a through hole formed in the cylinder head cover. The cover is fixed to the cylinder head, and a through hole corresponding to the through hole of the cylinder head cover is formed in the sound insulating cover, and the washer is surrounded by the periphery of the through hole, and the lower surface thereof is in contact with the upper surface of the cylinder head cover. By disposing a ring-shaped vibration damping member, a sound insulating gap is formed between the cylinder head cover and the sound insulating cover, and a push plate is disposed in contact with the upper surface of the vibration damping member. The sound insulating cover is attached via the push plate and the vibration damping member by means of a nut that is screwed onto a screw member that projects above the head of the mounting bolt.
（実施例）
第１図は、この考案に係るエンジンのシリンダ
ヘツドカバー遮音構造の実施例を示し、同図にお
いて１はシリンダヘツドカバー、２は遮音カバー
である。上記シリンダヘツドカバー１はアルミニ
ウム鋳物等によつてシリンダヘツド（図示省略）
の上部を覆う大きさに形成され、その下端部には
油洩れ防止用のパツキン１０が装着されている。
このシリンダヘツドカバー１には貫通孔１１が形
成され、この貫通孔１１に挿通された取付ボルト
３によりシリンダヘツドカバー１がシリンダヘツ
ドに固定されている。すなわち、上記取付ボルト
３の下端部をシリンダヘツドの取付部４に螺着す
ることにより、上記ボルト３の頭部３０の下方に
装着された皿状のワツシヤ３１をシリンダヘツド
カバー１の上面に圧接させ、このワツシヤ３１を
介してシリンダヘツドカバー１を下方に押圧して
固定しているのである。上記ワツシヤ３１はボル
ト頭部３０とシリンダヘツドカバー１との間に介
在されることによつて両者の間隙を油密にシール
するためのものであり、図示していないがシール
面にゴムが焼付加工されている。なお、上記取付
固定３は冷間圧造成形または削り加工等の手段に
より、第２図に示すように、軸部３５とボルト頭
部３０とその上方のねじ部３２とが一体に形成さ
れている。(Embodiment) FIG. 1 shows an embodiment of the engine cylinder head cover sound insulation structure according to the present invention, in which 1 is a cylinder head cover and 2 is a sound insulation cover. The cylinder head cover 1 is made of aluminum casting or the like to cover the cylinder head (not shown).
It is formed in a size that covers the upper part of the pipe, and a gasket 10 for preventing oil leakage is attached to its lower end.
A through hole 11 is formed in the cylinder head cover 1, and the cylinder head cover 1 is fixed to the cylinder head by a mounting bolt 3 inserted through the through hole 11. That is, by screwing the lower end of the mounting bolt 3 into the mounting portion 4 of the cylinder head, the dish-shaped washer 31 mounted below the head 30 of the bolt 3 is pressed against the upper surface of the cylinder head cover 1. The cylinder head cover 1 is fixed by pressing the cylinder head cover 1 downward through the washer 31. The washer 31 is interposed between the bolt head 30 and the cylinder head cover 1 to oil-tightly seal the gap between the two, and although not shown, rubber is baked on the sealing surface. Processed. In addition, the above-mentioned mounting fixing 3 is formed by means such as cold heading molding or machining, as shown in FIG. .
また、上記遮音カバー２は鋼板等によりシリン
ダヘツドカバー１の外部を覆う大きさに形成さ
れ、その下端部には振動減衰用のパツキン２０が
装着されている。この遮音カバー２には上記シリ
ンダヘツドカバー１の貫通孔１１と対応する位置
に貫通孔２１が形成され、この貫通孔２１の周縁
部には外周面に係合溝２２が形成されたゴム等か
らなるリング状の振動減衰部材２３が上記ワツシ
ヤ３１を囲み、かつ下端部がシリンダヘツドカバ
ー１の上面に圧接された状態で装着されている。
そして取付ボルト３の頭部３０の上方に突設され
たねじ部３２にナツト３３をねじ込むことによ
り、周縁部が上記振動減衰部材２３の上面に圧接
される押板３４を介して振動減衰部材２３をシリ
ンダヘツドカバー１の座部２５に押しつけ、遮音
カバー２を固定させている。従つて、シリンダヘ
ツドカバー１の座部２５と遮音カバー２との間に
介在された振動減衰部材２３によつて両カバー
１，２間に所定の間隙が形成されている。 The sound insulating cover 2 is formed of a steel plate or the like to a size that covers the outside of the cylinder head cover 1, and a vibration damping packing 20 is attached to the lower end thereof. This sound insulating cover 2 has a through hole 21 formed at a position corresponding to the through hole 11 of the cylinder head cover 1, and the peripheral edge of the through hole 21 is made of rubber or the like with an engaging groove 22 formed on the outer peripheral surface. A ring-shaped vibration damping member 23 surrounds the washer 31 and is mounted with its lower end pressed against the upper surface of the cylinder head cover 1.
Then, by screwing the nut 33 into the threaded portion 32 that projects above the head 30 of the mounting bolt 3, the vibration damping member 23 is attached to the vibration damping member 23 via the push plate 34 whose peripheral edge is pressed against the upper surface of the vibration damping member 23. is pressed against the seat 25 of the cylinder head cover 1 to fix the sound insulating cover 2. Therefore, a predetermined gap is formed between the covers 1 and 2 by the vibration damping member 23 interposed between the seat 25 of the cylinder head cover 1 and the sound insulating cover 2.
以上のように、シリンダヘツドカバー１に形成
された挿通孔３の周縁部を覆うように振動減衰部
材２３を取付け、この振動減衰部材２３により、
上記貫通孔１１を挿通する取付ボルト３の頭部３
０の下方に配設されたワツシヤ３１を囲むととも
に、上記シリンダヘツドカバー１と遮音カバー２
との間に遮音用の間隙を形成し、かつ上記ボルト
３の上方に突設されたねじ部３２にナツト３３を
螺合することにより、上記押板３４および振動減
衰部材２３を介して遮音カバー２を取付けるよう
にしたため、簡単な構成で上記シリンダヘツドカ
バー１および遮音カバー２を適正状態で取付ける
ことができる。すなわち、シリンダヘツドカバー
１および遮音カバー２がそれぞれ同一の取付ボル
ト３に対して取付けられるように構成されている
ため、部品点数が少なく、取付部の構造は簡単で
ある。また、油密を完全にするために、取付ボル
ト３を強固に締付けても、その力は振動減衰部材
には及ばず、上記遮音カバー２を固定するための
ナツト３３の締付力を適度に設定することができ
る。これによりシリンダヘツドカバー１と遮音カ
バー２との間隙を所定値に保持させることができ
るとともに、振動減衰部材２３の機能が損われる
のを防止することができるため、遮音効果を確実
に発揮させることができる。つまり上記のように
シリンダヘツド取付ボルト３により、ワツシヤ３
１を介してシリンダヘツドカバー１を強固に固着
することにより、シリンダヘツドカバー１によつ
て油洩れが防止されているため、遮音カバー２を
それほど強固に固着する必要はなく、従つて上記
振動減衰部材２３が強固に圧縮されることによる
振動減衰機能の低下および両カバー１，２間の間
隙の減少を防止できるのである。さらに振動減衰
部材２３が塑性変形することによる該部材２３の
損傷を防止することもできる。 As described above, the vibration damping member 23 is attached so as to cover the peripheral edge of the insertion hole 3 formed in the cylinder head cover 1, and with this vibration damping member 23,
Head 3 of mounting bolt 3 inserted through through hole 11
0, and the cylinder head cover 1 and the sound insulation cover 2.
By forming a sound insulation gap between the bolt 3 and the bolt 3, and screwing the nut 33 into the threaded portion 32 projecting upwardly from the bolt 3, the sound insulation cover 2, the cylinder head cover 1 and the sound insulation cover 2 can be installed in an appropriate state with a simple structure. That is, since the cylinder head cover 1 and the sound insulating cover 2 are configured to be attached to the same mounting bolt 3, the number of parts is small and the structure of the mounting portion is simple. In addition, even if the mounting bolts 3 are firmly tightened to ensure complete oil tightness, the force does not reach the vibration damping member, so the tightening force of the nuts 33 for fixing the sound insulating cover 2 should be adjusted to an appropriate level. Can be set. As a result, the gap between the cylinder head cover 1 and the sound insulation cover 2 can be maintained at a predetermined value, and the function of the vibration damping member 23 can be prevented from being impaired, so that the sound insulation effect can be reliably exerted. I can do it. In other words, as mentioned above, the washer 3 is attached by the cylinder head mounting bolt 3.
By firmly fixing the cylinder head cover 1 through the cylinder head cover 1, oil leakage is prevented by the cylinder head cover 1, so there is no need to fix the sound insulating cover 2 so firmly, and therefore the above-mentioned vibration damping This makes it possible to prevent the vibration damping function from being deteriorated and the gap between the covers 1 and 2 from decreasing due to the member 23 being strongly compressed. Furthermore, damage to the vibration damping member 23 due to plastic deformation can also be prevented.
（考案の効果）
以上説明したようにこの考案は、シリンダヘツ
ドカバーおよび遮音カバーを同一の取付ボルトに
対して取付けるように構成したにも拘らず、両カ
バーの固着力がそれぞれ別個の部材によつて付与
されるため、シリンダヘツドカバーを強固に固着
してその取付部からの油洩れを確実に防止するこ
とができるとともに、遮音カバーの固着力を適度
に調節して振動減衰部材が強固に圧縮されるのを
防止し、シリンダヘツドカバーと遮音カバーとの
間隙を所定値に設定することによつて効果的に遮
音することができるという利点を有するものであ
る。(Effects of the invention) As explained above, in this invention, although the cylinder head cover and the sound insulation cover are configured to be attached to the same mounting bolt, the adhesion force of both covers is maintained by separate members. This makes it possible to securely secure the cylinder head cover and reliably prevent oil leakage from its mounting part, and also to adjust the securing force of the sound insulating cover to an appropriate level to ensure that the vibration damping member is firmly compressed. This has the advantage that sound can be effectively insulated by setting the gap between the cylinder head cover and the sound insulating cover to a predetermined value.
第１図はこの考案の実施例を示す要部断面図、
第２図は取付ボルトの構成を示す正面図である。
１…シリンダヘツドカバー、２…遮音カバー、
３…取付ボルト、１１，２１…貫通孔、２３…振
動減衰部材、３０…ボルトの頭部、３１…ワツシ
ヤ、３２…ねじ部、３３…ナツト、３４…押板。
FIG. 1 is a sectional view of the main parts showing an embodiment of this invention.
FIG. 2 is a front view showing the structure of the mounting bolt. 1... Cylinder head cover, 2... Sound insulation cover,
3... Mounting bolt, 11, 21... Through hole, 23... Vibration damping member, 30... Bolt head, 31... Washer, 32... Threaded portion, 33... Nut, 34... Push plate.
Claims (1)
隔ててシリンダヘツドカバーを覆う遮音カバーを
配設する構成としたエンジンのシリンダヘツドカ
バー遮音構造において、上記シリンダヘツドカバ
ーに形成した貫通孔に挿通される取付ボルトによ
り、該ボルトの頭部とシリンダヘツドカバーとの
間を油密にシールするワツシヤを介してシリンダ
ヘツドカバーをシリンダヘツドに固定し、かつ遮
音カバーにはシリンダヘツドカバーの貫通孔と対
応した貫通孔を形成し、該貫通孔の周縁部に上記
ワツシヤを囲んで下面がシリンダヘツドカバーの
上面に当接するリング状の振動減衰部材を配設す
ることにより、上記シリンダヘツドカバーと遮音
カバーとの間に遮音用の間隙を形成するととも
に、該振動減衰部材の上面に当接する押板を配設
し、上記取付けボルトの頭部の上方に突設された
ねじ部材に螺合されるナツトにより押板および振
動減衰部を介して遮音カバーを取付けるように構
成したことを特徴とするエンジンのシリンダヘツ
ドカバー遮音構造。 In an engine cylinder head cover sound insulating structure in which a sound insulating cover is disposed outside the cylinder head cover to cover the cylinder head cover with a sound insulating gap in between, the sound insulating cover is inserted into a through hole formed in the cylinder head cover. The cylinder head cover is fixed to the cylinder head by the mounting bolt through a washer that provides an oil-tight seal between the head of the bolt and the cylinder head cover, and the sound insulating cover has a through hole corresponding to the through hole of the cylinder head cover. By forming a through hole and arranging a ring-shaped vibration damping member around the washer at the periphery of the through hole, the lower surface of which abuts the upper surface of the cylinder head cover, the cylinder head cover and the sound insulating cover can be connected to each other. A sound insulating gap is formed in between, and a push plate is provided that abuts on the top surface of the vibration damping member. A sound insulating structure for an engine cylinder head cover, characterized in that the sound insulating cover is attached via a plate and a vibration damping part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9506183U JPS603242U (en) | 1983-06-20 | 1983-06-20 | Engine cylinder head cover - sound insulation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9506183U JPS603242U (en) | 1983-06-20 | 1983-06-20 | Engine cylinder head cover - sound insulation structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS603242U JPS603242U (en) | 1985-01-11 |
| JPH0144752Y2 true JPH0144752Y2 (en) | 1989-12-25 |
Family
ID=30227205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9506183U Granted JPS603242U (en) | 1983-06-20 | 1983-06-20 | Engine cylinder head cover - sound insulation structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS603242U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH072943Y2 (en) * | 1985-07-31 | 1995-01-30 | 不二サッシ株式会社 | Window hinge structure |
| JP2513512B2 (en) * | 1989-12-01 | 1996-07-03 | ワイケイケイ株式会社 | Area lattice |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5253906U (en) * | 1975-10-17 | 1977-04-18 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56165926U (en) * | 1980-05-13 | 1981-12-09 | ||
| JPS606655Y2 (en) * | 1980-05-26 | 1985-03-04 | トヨタ自動車株式会社 | Serration press-fit bolt |
-
1983
- 1983-06-20 JP JP9506183U patent/JPS603242U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5253906U (en) * | 1975-10-17 | 1977-04-18 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS603242U (en) | 1985-01-11 |
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