JPH0470700U - - Google Patents
Info
- Publication number
- JPH0470700U JPH0470700U JP9765290U JP9765290U JPH0470700U JP H0470700 U JPH0470700 U JP H0470700U JP 9765290 U JP9765290 U JP 9765290U JP 9765290 U JP9765290 U JP 9765290U JP H0470700 U JPH0470700 U JP H0470700U
- Authority
- JP
- Japan
- Prior art keywords
- cover member
- cover
- sound
- cylinder head
- vibrating body
- 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.)
- Granted
Links
- 230000005484 gravity Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims 7
- 229920006122 polyamide resin Polymers 0.000 claims 6
- 239000011256 inorganic filler Substances 0.000 claims 3
- 229910003475 inorganic filler Inorganic materials 0.000 claims 3
- 239000011347 resin Substances 0.000 claims 2
- 229920005989 resin Polymers 0.000 claims 2
- 239000004677 Nylon Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Description
第１図は本考案の第１実施例にかかるシリンダ
ヘツドのカバー部を示す概略断面図、第２図は曲
げ弾性係数および比重の異なるナイロン材の各々
について振動周波数に対する減衰率の変化を示す
線図、
第３図は比重の異なるガラス強化ナイロン材の
各々について音の各周波数に対するその透過損失
の変化を示す線図、第４図は考案の第２実施例に
かかるシリンダヘツドのカバー部を示す概略断面
図、第５図は従来のシリンダヘツドカバーを用い
た内燃機関（エンジン）の構成を示す概略断面図
である。
１……シリンダヘツドカバー、２……第２カバ
ー、３……フローテイングラバー、４Ａ……バル
ブ、４Ｂ……バルブスプリング、５Ａ……カムシ
ヤフト、５Ｂ……カム、６……シリンダヘツド、
７……燃焼室、８……ラバーガスケツト、９……
ピストン、１０……シリンダ、１１……コネクテ
イングロツド、１２……クランク、１３……クラ
ンクシヤフト。
Fig. 1 is a schematic cross-sectional view showing the cover portion of the cylinder head according to the first embodiment of the present invention, and Fig. 2 is a line showing the change in damping rate with respect to vibration frequency for each of nylon materials having different bending elastic modulus and specific gravity. Figure 3 is a diagram showing the change in transmission loss for each frequency of sound for glass-reinforced nylon materials with different specific gravity, and Figure 4 shows the cover part of the cylinder head according to the second embodiment of the invention. Schematic sectional view. FIG. 5 is a schematic sectional view showing the structure of an internal combustion engine using a conventional cylinder head cover. 1... Cylinder head cover, 2... Second cover, 3... Floating rubber, 4A... Valve, 4B... Valve spring, 5A... Camshaft, 5B... Cam, 6... Cylinder head,
7... Combustion chamber, 8... Rubber gasket, 9...
Piston, 10...Cylinder, 11...Connecting rod, 12...Crank, 13...Crankshaft.
Claims (1)
因した音を低減するための遮音カバーにおいて、 前記振動体および／または音源による振動が伝
播する部位に取付けられたカバー部材であつて低
剛性および高比重を有したカバー部材を具えたこ
とを特徴とする遮音カバー。 ２ その被覆する振動体および／または音源に起
因した音を低減するための遮音カバーにおいて、 前記振動体および／または音源による振動が伝
播する部位に取付けられたカバー部材であつて低
剛性材によつて形成された第１カバー部材と、 該第１カバー部材の少なくとも一部を覆つて設
けられたカバー部材であつて高比重材によつて形
成された第２カバー部材と を具えたことを特徴とする遮音カバー。 ３ その被覆する振動体および／または音源に起
因した音を低減するための遮音カバーにおいて、 高比重材によつて形成された第２カバー部材と
、 該第２カバー部材の少なくとも一部を覆つて設
けられたカバー部材であつて低剛性材によつて形
成された第１カバー部材と を具え、前記第１カバー部材または前記第２カバ
ー部材のいずれかが前記振動体および／または音
源による振動が伝播する部位に取付けられたこと
を特徴とする遮音カバー。 ４ 前記第１カバー部材と前記第２カバー部材と
は互いに接続されたことを特徴とする請求項１に
記載の遮音カバー。 ５ 前記第１カバー部材は曲げ弾性係数の小さい
樹脂によつて形成され、前記第２カバー部材は高
比重の樹脂によつて形成されたことを特徴とする
請求項２ないし４のいずれかに記載の遮音カバー
。 ６ 前記第１カバー部材の曲げ弾性係数が３０，
０００Kg／cm2以下であり、前記第２カバー部材
の比重が１．４ｇ／cm3以上であることを特徴と
する請求項５に記載の遮音カバー。 ７ 前記第１カバー部材はゴムを添加したポリア
ミド系樹脂によつて形成され、前記第２カバー部
材は無機フイラーを添加したガラス強化ポリアミ
ド系樹脂によつて形成されたことを特徴とする請
求項５に記載の遮音カバー。 ８ 前記第１カバー部材と前記第２カバー部材と
は弾性体を介して接続されたことを特徴とする請
求項４ないし７のいずれかに記載の遮音カバー。 ９ その被覆する振動体および／または音源に起
因した音を低減するための遮音カバーにおいて、 前記振動体および／または音源による振動が伝
播する部位に取付けられたカバー部材であつて低
剛性かつ高比重であるカバー部材を具えたことを
特徴とする遮音カバー。 １０ 内燃機関のシリンダヘツドを被覆するシリ
ンダヘツドカバーにおいて、 前記シリンダヘツドに取付けられ、ゴムを添加
したポリアミド系樹脂によつて形成された第１カ
バー部材と、 該第１カバー部材の少なくとも一部を覆うよう
当該第１カバー部材に弾性体を介して接続された
カバー部材であつて、無機フイラーを添加したガ
ラス強化ポリアミド系樹脂によつて形成された第
２カバー部材と を具えたことを特徴とするシリンダヘツドカバー
。 １１ 内燃機関のシリンダヘツドを被覆するシリ
ンダヘツドカバーにおいて、 無機フイラーを添加したガラス強化ポリアミド
系樹脂によつて形成された第２カバー部材と、 該第２カバー部材の少なくとも一部を覆うよう
当該第２カバー部材に弾性体を介して接続された
カバー部材であつて、ゴムを添加したポリアミド
系樹脂によつて形成された第１カバー部材と を具え、前記第１カバー部材または前記第２カバ
ー部材のいずれかが前記シリンダヘツドに取付け
られたことを特徴とするシリンダヘツドカバー。[Claims for Utility Model Registration] 1. In a sound insulation cover for reducing sound caused by a vibrating body and/or a sound source covered by the cover, a cover member attached to a part where vibrations from the vibrating body and/or sound source propagate. A sound insulating cover comprising a cover member having low rigidity and high specific gravity. 2. In a sound insulating cover for reducing sound caused by the vibrating body and/or sound source covered by the cover, the cover member is attached to a part where vibrations from the vibrating body and/or sound source propagate, and is made of a low-rigidity material. and a second cover member provided to cover at least a portion of the first cover member and made of a high specific gravity material. Sound insulation cover. 3. A sound insulating cover for reducing sound caused by a vibrating body and/or a sound source covered by the cover, comprising: a second cover member formed of a high specific gravity material; and covering at least a portion of the second cover member. a first cover member provided and formed of a low-rigidity material, and either the first cover member or the second cover member is provided with a first cover member formed of a low-rigidity material, and one of the first cover member and the second cover member is provided with a A sound insulating cover characterized in that it is attached to a part where the sound propagates. 4. The sound insulation cover according to claim 1, wherein the first cover member and the second cover member are connected to each other. 5. According to any one of claims 2 to 4, wherein the first cover member is made of a resin having a small bending elastic modulus, and the second cover member is made of a resin having a high specific gravity. sound insulation cover. 6 The bending elastic modulus of the first cover member is 30,
6. The sound insulation cover according to claim 5, wherein the specific gravity of the second cover member is 1.4 g/cm 3 or more. 7. Claim 5, wherein the first cover member is made of a polyamide resin added with rubber, and the second cover member is made of a glass-reinforced polyamide resin added with an inorganic filler. Sound insulation cover as described in . 8. The sound insulation cover according to claim 4, wherein the first cover member and the second cover member are connected via an elastic body. 9 In a sound insulating cover for reducing sound caused by the vibrating body and/or sound source covered by the cover, a cover member having low rigidity and high specific gravity is attached to a part where vibrations from the vibrating body and/or sound source propagate. A sound insulating cover characterized by comprising a cover member that is. 10. A cylinder head cover that covers a cylinder head of an internal combustion engine, comprising: a first cover member attached to the cylinder head and formed of a polyamide resin added with rubber; and at least a portion of the first cover member. A second cover member connected to the first cover member via an elastic body so as to cover the first cover member, the second cover member being formed of a glass-reinforced polyamide resin containing an inorganic filler. cylinder head cover. 11. A cylinder head cover that covers a cylinder head of an internal combustion engine, comprising: a second cover member formed of a glass-reinforced polyamide resin containing an inorganic filler; and a second cover member that covers at least a portion of the second cover member. a first cover member connected to the second cover member via an elastic body, the first cover member being formed of a polyamide resin added with rubber, the first cover member or the second cover member; A cylinder head cover, characterized in that any one of the above is attached to the cylinder head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990097652U JP2592000Y2 (en) | 1990-07-25 | 1990-09-19 | Sound insulation cover and cylinder head cover |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7824790 | 1990-07-25 | ||
| JP2-78247 | 1990-07-25 | ||
| JP1990097652U JP2592000Y2 (en) | 1990-07-25 | 1990-09-19 | Sound insulation cover and cylinder head cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0470700U true JPH0470700U (en) | 1992-06-23 |
| JP2592000Y2 JP2592000Y2 (en) | 1999-03-10 |
Family
ID=31948703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990097652U Expired - Lifetime JP2592000Y2 (en) | 1990-07-25 | 1990-09-19 | Sound insulation cover and cylinder head cover |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2592000Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6089313U (en) * | 1983-11-21 | 1985-06-19 | 日本ゼオン株式会社 | soundproof panel |
| JPS6127419A (en) * | 1984-07-17 | 1986-02-06 | Matsushita Electric Ind Co Ltd | Incomplete combustion alarming device |
-
1990
- 1990-09-19 JP JP1990097652U patent/JP2592000Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6089313U (en) * | 1983-11-21 | 1985-06-19 | 日本ゼオン株式会社 | soundproof panel |
| JPS6127419A (en) * | 1984-07-17 | 1986-02-06 | Matsushita Electric Ind Co Ltd | Incomplete combustion alarming device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2592000Y2 (en) | 1999-03-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |