JPH0465938U - - Google Patents
Info
- Publication number
- JPH0465938U JPH0465938U JP10748190U JP10748190U JPH0465938U JP H0465938 U JPH0465938 U JP H0465938U JP 10748190 U JP10748190 U JP 10748190U JP 10748190 U JP10748190 U JP 10748190U JP H0465938 U JPH0465938 U JP H0465938U
- Authority
- JP
- Japan
- Prior art keywords
- crankcase
- case cover
- vibration
- mounting hole
- fixing bolt
- 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
- 239000011358 absorbing material Substances 0.000 claims description 2
- 238000009413 insulation Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
第１図および第２図は本考案の一実施例を示し
、第１図はクランクケースの遮音構造の縦断面図
、第２図はその一部を省略した平面図、第３図は
ケースカバーの取付け部位を説明する図、第４図
は本考案の従来例を示すクランクケースの遮音構
造の縦断面図である。
１……エンジン本体、２……クランクケース、
１１……吸音材、１２……ケースカバー、１７…
…取付け用孔、１３……固定ボルト、１９……防
振弾性部材（防振ゴム）、１８……重量部材（ス
ペーサ）。
Figures 1 and 2 show an embodiment of the present invention, with Figure 1 being a longitudinal cross-sectional view of the sound insulation structure of the crankcase, Figure 2 being a partially omitted plan view, and Figure 3 being a case cover. FIG. 4 is a vertical sectional view of a crankcase sound insulation structure showing a conventional example of the present invention. 1...Engine body, 2...Crankcase,
11...Sound absorbing material, 12...Case cover, 17...
...Mounting hole, 13... Fixing bolt, 19... Vibration-proof elastic member (vibration-proof rubber), 18... Weight member (spacer).
Claims (1)
のクランクケース表面の所定部位に吸音材を介し
て重ね合わされるケースカバーと、このケースカ
バーに設けられる取付け用孔を介してクランクケ
ースに螺挿される固定ボルトと、この固定ボルト
と上記ケースカバーとの間およびケースカバーと
クランクケースとの間に介在されエンジン駆動に
ともなうクランクケースの振動を吸収する防振弾
性部材と、この防振弾性部材と上記ケースカバー
の取付け用孔周辺との間に介在され防振弾性部材
に対しマスとして作用し遮蔽周波数を低下させる
重量部材とを具備したことを特徴とするクランク
ケースの遮音構造。 A crankcase that constitutes the engine body, a case cover that is overlapped with a predetermined part of the surface of the crankcase via a sound absorbing material, and a fixing bolt that is screwed into the crankcase through a mounting hole provided in the case cover. , a vibration-proofing elastic member that is interposed between the fixing bolt and the case cover and between the case cover and the crankcase and absorbs vibrations of the crankcase due to engine driving; A sound insulating structure for a crankcase, comprising a heavy member interposed between the periphery of a mounting hole and a heavy member acting as a mass on the vibration-proofing elastic member to reduce a shielding frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10748190U JPH0465938U (en) | 1990-10-12 | 1990-10-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10748190U JPH0465938U (en) | 1990-10-12 | 1990-10-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0465938U true JPH0465938U (en) | 1992-06-09 |
Family
ID=31854014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10748190U Pending JPH0465938U (en) | 1990-10-12 | 1990-10-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0465938U (en) |
-
1990
- 1990-10-12 JP JP10748190U patent/JPH0465938U/ja active Pending
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