JPS5918184Y2 - Damper for preventing torsional vibration of crankshaft - Google Patents
Damper for preventing torsional vibration of crankshaftInfo
- Publication number
- JPS5918184Y2 JPS5918184Y2 JP1379U JP1379U JPS5918184Y2 JP S5918184 Y2 JPS5918184 Y2 JP S5918184Y2 JP 1379 U JP1379 U JP 1379U JP 1379 U JP1379 U JP 1379U JP S5918184 Y2 JPS5918184 Y2 JP S5918184Y2
- Authority
- JP
- Japan
- Prior art keywords
- cover
- damper
- crankshaft
- attached
- torsional vibration
- 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
Landscapes
- Pulleys (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
【考案の詳細な説明】
本考案はクランクシャフトの捩り振動を防止するために
クランクシャフトに直接あるいは間接的にダンパーを回
転一体に取り付けたエンジンに関する。[Detailed Description of the Invention] The present invention relates to an engine in which a damper is rotatably attached to the crankshaft directly or indirectly in order to prevent torsional vibration of the crankshaft.
従来よりクランクシャフトの捩り振動を防止すべくクラ
ンクシャフトに回転一体にダンパーを取り付けることが
行われている。BACKGROUND OF THE INVENTION Conventionally, a damper has been attached to a crankshaft so as to rotate integrally with the crankshaft in order to prevent torsional vibration of the crankshaft.
第１図は従来例の一例を示し、１はシリンダブロック、
２はクランクシャフト、３はフロントカバーでシリンダ
ブロック１にボルト４により着脱自在に取り付けられて
おり、またクランクシャフト２が貫通する部分にはオイ
ルシール５が施されている。FIG. 1 shows an example of a conventional example, where 1 is a cylinder block;
2 is a crankshaft, and 3 is a front cover which is removably attached to the cylinder block 1 with bolts 4, and an oil seal 5 is provided in the portion through which the crankshaft 2 passes.
６はオイルスリンガ゛−で゛あり、７は動力取出用のプ
ーリーでクランクシャフト２の先端にキー８およびナツ
ト９によりクランクシャフト２に回転一体に取り付けら
れている。Reference numeral 6 is an oil slinger, and 7 is a pulley for taking out power, which is attached to the tip of the crankshaft 2 by a key 8 and a nut 9 so as to rotate integrally with the crankshaft 2.
１０はクランクシャフトの捩り振動を防止するためのダ
ンパーで、マス１１がゴム等の防振部材１２を介してバ
ックプレート１３に一体に取り付けられており、そのバ
ックプレート１３がプーリー７にボルト１４により固着
されている。10 is a damper for preventing torsional vibration of the crankshaft, and a mass 11 is integrally attached to a back plate 13 via a vibration isolating member 12 such as rubber, and the back plate 13 is attached to the pulley 7 by bolts 14. It is fixed.
このダンパー１０によりクランクシャフト２の捩り振動
を防止する。This damper 10 prevents torsional vibration of the crankshaft 2.
ところで、従来のエンジンにおいてはダンパー１０がプ
ーリー７と共に露出しているため、ダンパーの振動音が
エンジン騒音の原因の一つになっていた。By the way, in the conventional engine, since the damper 10 and the pulley 7 are exposed, the vibration noise of the damper is one of the causes of engine noise.
これを防止するにはダンパーを適宜のカバーで被うこと
が考えられるが、回転部材であるクランクシャフト等と
不動部材であるカバーとの間には回転部材であるクラン
クシャフト等が支障なく回転できるように間隙を設けね
ばならずこの間隙から振動音が外部に漏れる、またカバ
ーの内側（クランクシャフト側）が波うって振動し振動
音を生じる危険性もある。To prevent this, it is possible to cover the damper with an appropriate cover, but between the rotating member such as the crankshaft and the stationary member, the cover allows the rotating member such as the crankshaft to rotate without any hindrance. A gap must be provided so that vibration noise leaks outside through this gap, and there is also the risk that the inside of the cover (on the crankshaft side) may ripple and vibrate, causing vibration noise.
したがって本考案の目的は、ダンパーの振動音が外部に
漏れることを防止し、もってダンパーの振動音に起因す
るエンジン騒音を可及的小さくすることのできるクラン
クシャフトの捩り振動防止用ダンパーを提供するにある
。Therefore, an object of the present invention is to provide a damper for preventing torsional vibration of a crankshaft, which can prevent the vibration noise of the damper from leaking to the outside, thereby reducing engine noise caused by the vibration noise of the damper as much as possible. It is in.
本考案によれば、クランクシャフトの捩り振動防止用ダ
ンパーは、シリンダブロックあるいはフロントカバーに
ダンパーを被うカバーを取り付け、そのカバーの内側端
部にカバーと回転部材との間の間隙をうめるゴム、合成
樹脂等の弾性部材を一体に取り付けてなり、その弾性部
材は回転部材と摺動接触している。According to the present invention, the damper for preventing torsional vibration of a crankshaft includes a cover that covers the damper attached to the cylinder block or the front cover, and a rubber that fills the gap between the cover and the rotating member at the inner end of the cover. An elastic member made of synthetic resin or the like is integrally attached, and the elastic member is in sliding contact with the rotating member.
したがって、カバーおよび回転部材の振動による相対変
位や取付誤差によって弾性部材が回転部材に接触し押圧
された場合に、弾性部材が追従して変形し、回転部材の
回転を阻害することなく、振動音が外部に洩れるのを好
適に防止できる。Therefore, when the elastic member comes into contact with the rotating member and is pressed due to relative displacement or installation error caused by the vibration of the cover and the rotating member, the elastic member deforms accordingly, and vibration noise is generated without disturbing the rotation of the rotating member. leakage to the outside can be suitably prevented.
本考案の実施に際して弾性部材としてはゴム、合成樹脂
の外に例えばフェルトを用いることができる。In carrying out the present invention, in addition to rubber and synthetic resin, for example, felt can be used as the elastic member.
またカバーに防振部材を設けるとさらに振動音を小さく
できる。Furthermore, if a vibration isolating member is provided on the cover, vibration noise can be further reduced.
以下図面を参照し本考案の実施例を説明する。Embodiments of the present invention will be described below with reference to the drawings.
第２図は本考案の第１の実施例を示し、１５はダンパー
１０を被うカバーでその外周にてフロントカバー３にボ
ルト１６により取り付けられている。FIG. 2 shows a first embodiment of the present invention, in which a cover 15 covers the damper 10 and is attached to the front cover 3 by bolts 16 at its outer periphery.
不動部材であるカバー１５と回転部材であるダンパー１
０との間には回転部材であるダンパー１０が支障なく回
転できるように間隙が設けられるが、その間隙から振動
音が外部に漏れ、またカバー１５の内側（ダンパー側）
が波うって振動し振動音を生じる危険性があることは前
述のとおりである。The cover 15 is a stationary member and the damper 1 is a rotating member.
A gap is provided between the cover 15 and the damper 10 so that the damper 10, which is a rotating member, can rotate without any trouble.
As mentioned above, there is a risk that the vibrations may ripple and vibrate, producing vibration noise.
そこでカバー１５の内側端部にカバー１５とダンパー１
０のバックプレート１３との間の間隙をうめるべくゴム
合成樹脂等の弾性部材１７が一体に取り付けられている
。Therefore, the cover 15 and the damper 1 are attached to the inner end of the cover 15.
An elastic member 17 made of rubber synthetic resin or the like is integrally attached to fill the gap between the back plate 13 and the back plate 13 of 0.
尚、カバー１５は内側に折り曲げることにより剛性が高
められる様に形成されている。Note that the cover 15 is formed so that its rigidity can be increased by bending it inward.
このようにカバー１５とダンパー１０との間の間隙をゴ
ム、合成樹脂等の弾性部材１７でうめることによりダン
パーの振動音が外部に漏れるのが防止されると共にカバ
ー１５の内側が波うつことがなくなりカバーの内側が波
うつことによる振動音の発生を確実に防止する。By filling the gap between the cover 15 and the damper 10 with the elastic member 17 made of rubber, synthetic resin, etc., the vibration sound of the damper is prevented from leaking to the outside, and the inside of the cover 15 is prevented from undulating. To reliably prevent the generation of vibration noise caused by the inside of a cover undulating.
なお、ダンパー１０のバックプレート１３はゴム、合成
樹脂等の弾性部材１７と摺動接触をするが一方がゴム、
合成樹脂等の弾性部材であるので何ら支障をきたさない
。Note that the back plate 13 of the damper 10 makes sliding contact with an elastic member 17 made of rubber, synthetic resin, etc.;
Since it is an elastic member such as synthetic resin, it does not cause any trouble.
またカバーの材質は金属、非金属いずれかであってもよ
い。Further, the material of the cover may be either metal or non-metal.
第３図は本考案の第２の実施例を示し、この実施例では
カバー１５の内側端をプーリー７に接近させ、カバー１
５の内側端部にカバー１５とプーリー７の外周との間の
間隙をうめるべくゴム、合成樹脂等の弾性部材１７が一
体に取り付けられている。FIG. 3 shows a second embodiment of the invention, in which the inner end of the cover 15 is brought close to the pulley 7, and the cover 15 is brought close to the pulley 7.
An elastic member 17 made of rubber, synthetic resin, etc. is integrally attached to the inner end of the pulley 5 to fill the gap between the cover 15 and the outer periphery of the pulley 7.
第４図は本考案の第３の実施例を示し、この実施例では
カバー１５とタッパ−１０のマス１１の側面および内周
面との間の間隙をうめるべくカバー１５の内側にゴム、
合成樹脂等の弾性部材１７が一体に取り付けられている
。FIG. 4 shows a third embodiment of the present invention. In this embodiment, rubber is installed inside the cover 15 to fill the gap between the cover 15 and the side surface and inner peripheral surface of the mass 11 of the tapper 10.
An elastic member 17 made of synthetic resin or the like is integrally attached.
第５図は本考案の第４の実施例を示し、この実施例では
カバー１５がゴム、合成樹脂等の防振部材１８を介して
ボルト１６によりフロントカバー３に取り付けられてお
り、また第６図は本考案の第５の実施例を示し、この実
施例ではカバー１５にゴム、合成樹脂等の防振部材１９
が取り付けられている。FIG. 5 shows a fourth embodiment of the present invention, in which a cover 15 is attached to the front cover 3 with bolts 16 via a vibration-proof member 18 made of rubber, synthetic resin, etc. The figure shows a fifth embodiment of the present invention, and in this embodiment, a cover 15 is provided with a vibration isolating member 19 made of rubber, synthetic resin, etc.
is installed.
このようにすることにより一層力バー１５の振動を防止
することができる。By doing so, vibration of the force bar 15 can be further prevented.
なお、前述の各実施例では、ダンパーは動力取出用のプ
ーリーに取り付けられているが、クランクシャフトに回
転一体に取り付けるようにしてもよく、またカバーはシ
リンダブロックに取り付けるようにしてもよい。In each of the above-described embodiments, the damper is attached to a pulley for extracting power, but it may be attached to the crankshaft so as to rotate integrally with the damper, or the cover may be attached to the cylinder block.
以上説明したように本考案は、シリンダブロックあるい
はフロントカバーにダンパーを被うカバーを取り付け、
そのカバーの内側端部にカバーと回転部材との間の間隙
をうめるゴム、合成樹脂等の弾性部材を一体に取り付け
たものであるので、ダンパーの振動音が外部に漏れるの
を確実に防止しダンパーの振動音に起因するエンジン騒
音を従来のものに比べ大幅に減じることができる。As explained above, the present invention attaches a cover that covers the damper to the cylinder block or front cover,
Since an elastic member such as rubber or synthetic resin is integrally attached to the inner end of the cover to fill the gap between the cover and the rotating member, it reliably prevents the vibration noise of the damper from leaking to the outside. Engine noise caused by damper vibration noise can be significantly reduced compared to conventional damper noise.
さらにカバーの内側が波うつことがなくなりカバーの内
側が波うつことによる振動音の発生をも防止することが
できるものである。Furthermore, the inside of the cover does not wave, and it is possible to prevent the generation of vibration noise caused by the inside of the cover waving.
第１図は従来のエンジンのフロントカバ一部分の縦断面
図、第２図、第３図、第４図、第５図および第６図は本
考案のエンジンのフロントカバ一部分の縦断面図である
。FIG. 1 is a longitudinal sectional view of a portion of a front cover of a conventional engine, and FIGS. 2, 3, 4, 5, and 6 are longitudinal sectional views of a portion of a front cover of an engine according to the present invention. .
Claims (1)
シャフトあるいはクランクシャフトの先端に回転一体に
取り付けた動力取出用プーリーにダンパーを回転一体に
取り付けてなるエンジンにおいて、シリンダブロックあ
るいはフロントカバーにダンパーを被うカバーを取り付
け、そのカバーの内側端部にカバーと回転部材との間の
間隙をうめるゴム、合成樹脂等の弾性部材を一体に取り
付けてなり、その弾性部材は回転部材と摺動接触してい
ることを特徴とするクランクシャフトの捩り振動防止用
ダンパーA cover that covers the damper on the cylinder block or front cover in an engine in which a damper is integrally attached to the crankshaft or a power take-off pulley that is integrally attached to the tip of the crankshaft in order to prevent torsional vibration of the crankshaft. is attached, and an elastic member such as rubber or synthetic resin is integrally attached to the inner end of the cover to fill the gap between the cover and the rotating member, and the elastic member is in sliding contact with the rotating member. Damper for preventing torsional vibration of crankshaft featuring
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1379U JPS5918184Y2 (en) | 1979-01-05 | 1979-01-05 | Damper for preventing torsional vibration of crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1379U JPS5918184Y2 (en) | 1979-01-05 | 1979-01-05 | Damper for preventing torsional vibration of crankshaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55100732U JPS55100732U (en) | 1980-07-14 |
| JPS5918184Y2 true JPS5918184Y2 (en) | 1984-05-26 |
Family
ID=28800852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1379U Expired JPS5918184Y2 (en) | 1979-01-05 | 1979-01-05 | Damper for preventing torsional vibration of crankshaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5918184Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58165355U (en) * | 1982-04-30 | 1983-11-04 | 日野自動車株式会社 | torsional damper |
| JPS60110750U (en) * | 1983-12-29 | 1985-07-27 | いすゞ自動車株式会社 | torsional damper |
-
1979
- 1979-01-05 JP JP1379U patent/JPS5918184Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55100732U (en) | 1980-07-14 |
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