JP2816378B2 - Viscous damper device - Google Patents
Viscous damper deviceInfo
- Publication number
- JP2816378B2 JP2816378B2 JP4343094A JP34309492A JP2816378B2 JP 2816378 B2 JP2816378 B2 JP 2816378B2 JP 4343094 A JP4343094 A JP 4343094A JP 34309492 A JP34309492 A JP 34309492A JP 2816378 B2 JP2816378 B2 JP 2816378B2
- Authority
- JP
- Japan
- Prior art keywords
- casing
- damper
- damper plate
- viscous
- annular
- 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 - Lifetime
Links
Landscapes
- Fluid-Damping Devices (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、車両用デイーゼルエン
ジンのクランク軸等の回転軸に装着されて同回転軸の捩
り振動を低減するビスカスダンパ装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a viscous damper device mounted on a rotary shaft such as a crankshaft of a vehicle diesel engine to reduce torsional vibration of the rotary shaft.
【０００２】[0002]
【従来の技術】車両用デイーゼルエンジンのクランク軸
等捩り振動が発生する回転軸に固着されて同回転軸と一
体に回転する板状のダンパプレートと、同ダンパプレー
トの外周部分に上記回転軸に対し同心的に配設された中
空環状のケーシングと、同ケーシング内にその内壁面と
の間に適宜の小間隙を存して収容された環状の慣性体
と、同ケーシング内壁面と上記慣性体との間の間隙に充
填されたシリコンオイル等の粘性液とを有するビスカス
ダンパは、従来公知である。2. Description of the Related Art A plate-shaped damper plate which is fixed to a rotating shaft such as a crankshaft of a vehicle diesel engine which generates torsional vibration and rotates integrally with the rotating shaft, and an outer peripheral portion of the damper plate is provided with the rotating shaft. A hollow annular casing concentrically disposed, an annular inertial body accommodated in the casing with an appropriate small gap between its inner wall surface, and an inner wall surface of the casing and the inertial body A viscous damper having a viscous liquid such as silicon oil filled in a gap between the viscous damper and the viscous damper is conventionally known.
【０００３】上記ビスカスダンパにおけるダンパプレー
ト及びその外周部分に同心的に配設される環状のケーシ
ングは、回転体として勿論静的及び動的なバランスをと
る必要がある。このため従来は、上記ダンパプレート及
び環状ケーシングを、通常鉄系材料からなる素材からす
べて機械切削により削り出して成形していたので、製造
コストが著しく高くなることを免れなかつた。In the viscous damper, the damper plate and the annular casing concentrically arranged on the outer peripheral portion of the viscous damper need to have a static and dynamic balance as a rotating body. For this reason, conventionally, the damper plate and the annular casing have all been cut out from a material usually made of an iron-based material by machine cutting and formed, so that the manufacturing cost was inevitably increased.
【０００４】[0004]
【発明が解決しようとする課題】そこでビスカスダンパ
の製造コストを低減するために、上記ダンパプレート及
び環状ケーシングを、例えばダクタイル鋳鉄により鋳造
し、鋳造品に必要最小限の機械加工を施すことにより切
削量を減少し機械加工工数を低減することが考慮される
が、この場合、板状のダンパプレートと環状ケーシング
との接合部分即ち断面急変部分の強度を確保すること
と、鋳放しのままで機械加工を施さない部分が存在する
ため静的及び動的バランスを確保することが重要であ
る。本発明は、上記事情に鑑み創案されたもので、上記
ダンパプレート及び環状ケーシングを、ダクタイル鋳鉄
等の鋳造品とし又はアルミニウム合金等の鍛造品とした
場合に、特に重要なダンパプレートと環状ケーシングと
の接合部分の強度を確保すると共に、回転体として必要
な静的及び動的バランスを容易に確保することができ、
この結果、耐久性及び信頼性が優れ、かつ振動を起こす
ことがないビスカスダンパ装置を安価に提供することを
目的とするものである。Therefore, in order to reduce the manufacturing cost of the viscous damper, the damper plate and the annular casing are cast by, for example, ductile cast iron, and the cast product is cut by performing the minimum necessary machining. It is considered to reduce the amount and reduce the number of machining steps, but in this case, it is necessary to ensure the strength of the joint between the plate-shaped damper plate and the annular casing, that is, the part with a sudden change in cross section, and It is important to secure a static and dynamic balance because there are parts that are not processed. The present invention has been made in view of the above circumstances, and when the damper plate and the annular casing are cast products such as ductile cast iron or forged products such as aluminum alloys, the damper plate and the annular casing are particularly important. In addition to ensuring the strength of the joints, it is possible to easily secure the static and dynamic balance required as a rotating body,
As a result, it is an object to provide a viscous damper device which is excellent in durability and reliability and does not cause vibration at low cost.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するた
め、本発明は、回転軸に固着されて同回転軸と一体に回
転する板状のダンパプレートと、同ダンパプレートの外
周部分に上記回転軸に対し同心的に配設された中空環状
のケーシングと、同ケーシング内にその内壁面との間に
適宜の小間隙を存して収容された環状の慣性体と、同ケ
ーシング内壁面と上記慣性体との間の間隙に充填された
シリコンオイル等の粘性液とを有するビスカスダンパに
おいて、同ビスカスダンパの軸線方向一側における上記
ケーシングとダンパプレートとの接合部分に、円周方向
に適宜の間隔を存して上記軸線を含む平面内の断面形状
が略三角形状をなすリブが放射状に配設され、かつ軸線
方向他側における上記ケーシングとダンパプレートとの
接合部分には、円周方向全周にわたり連続した大きい曲
率半径の隅部接続曲面部又は環状棚部が形成されている
ことを特徴とするビスカスダンパ装置を提案するもので
ある。In order to achieve the above object, the present invention provides a plate-shaped damper plate fixed to a rotating shaft and rotated integrally with the rotating shaft, and the rotating member provided on an outer peripheral portion of the damper plate. A hollow annular casing disposed concentrically with respect to the shaft, an annular inertial body accommodated in the casing with an appropriate small gap between its inner wall surface, In a viscous damper having a viscous liquid such as silicon oil filled in a gap between the inertial body and a viscous liquid such as a silicone oil, a joint portion between the casing and a damper plate on one axial side of the viscous damper is provided in a circumferential direction as appropriate. Ribs having a substantially triangular cross-section in a plane including the axis at intervals are radially arranged, and a joining portion between the casing and the damper plate on the other side in the axial direction has a circumferential shape. Proposes a viscous damper apparatus characterized in that corner connecting curved portion or the annular ledge of the large radius of curvature that is continuous over the counter entire circumference are formed.
【０００６】[0006]
【実施例】以下本発明の実施例を添付図面について具体
的に説明する。図中符号１０は総括的にビスカスダンパ
を示し、同ダンパは、デイーゼルエンジンのクランク軸
等の回転軸（図示せず）に固定されて同回転軸と一体に
回転する板状のダンパプレート１２と、同ダンパプレー
トの外周部分に上記回転軸に対し同心的に配設された中
空環状のケーシング１４とを具えている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the accompanying drawings. In the figure, reference numeral 10 generally denotes a viscous damper, which is fixed to a rotating shaft (not shown) such as a crankshaft of a diesel engine, and has a plate-shaped damper plate 12 which rotates integrally with the rotating shaft. A hollow annular casing 14 disposed concentrically with respect to the rotation shaft on the outer peripheral portion of the damper plate.
【０００７】上記環状のケーシング１４は、ダンパプレ
ート１２と一体に例えばダクタイル鋳鉄により鋳造さ
れ、軸線方向の一例が開口したコ字状をなすケーシング
本体１６と、同ケーシング本体１６の開口端に装着され
たのちその外周縁及び内周縁をかしめて固着された環状
板材からなる蓋１８とから形成されている。The annular casing 14 is formed integrally with the damper plate 12 by, for example, ductile cast iron, and has a U-shaped casing body 16 with an example opening in the axial direction, and is mounted on the open end of the casing body 16. After that, the outer peripheral edge and the inner peripheral edge are caulked and fixed, and the lid 18 is formed of an annular plate material.
【０００８】上記環状ケーシング１４の内部には、その
内壁面との間に適宜の小間隙、例えば０．３〜０．５ｍ
ｍの間隙を存して、断面形状が略長方形をなす慣性体２
０が収容され、同慣性体２０と環状ケーシング１４の内
壁面との間には適宜粘度の粘性液、例えば粘度１０万〜
３０万ＣＳｔ（ａｔ２５°Ｃ）のシリコンオイル２２が
充填されている。In the inside of the annular casing 14, an appropriate small gap, for example, 0.3 to 0.5 m, is formed between the annular casing 14 and its inner wall surface.
inertia body 2 having a substantially rectangular cross section with a gap of m
0 is accommodated, and a viscous liquid having an appropriate viscosity, for example, a viscosity of 100,000 to 100, is provided between the inertial body 20 and the inner wall surface of the annular casing 14.
It is filled with 300,000 CSt (at 25 ° C.) silicon oil 22.
【０００９】上記慣性体２０の軸線に対し直角な二つの
側面には、円周方向に適宜の間隔を存して夫々複数のテ
フロン樹脂製のリング状ベアリング２４が配設され、ま
た同慣性体２０の内周面には、同じくテフロン樹脂製の
環状ベアリング２６が配設されている。A plurality of ring-shaped bearings 24 made of Teflon resin are disposed on two side surfaces perpendicular to the axis of the inertial body 20 at appropriate intervals in the circumferential direction. An annular bearing 26 also made of Teflon resin is disposed on the inner peripheral surface of 20.
【００１０】上記環状ケーシング１４とダンパプレート
１２の軸線方向一例の接合部分には、図２に良く示され
ているように、円周方向に適宜の間隔を存して複数の補
強用リブ２８が放射状に設けられている。上記リブ２８
は、図１の断面図に良く示されているように、軸線を含
む平面内の断面形状が略三角形をなすように形成され、
また図１に示されているように、ダンパプレート１２を
回転軸に固着するための複数のボルト孔３０の中心と回
転軸の中心とを結ぶ半径線上に配置される。As shown in FIG. 2, a plurality of reinforcing ribs 28 are provided at appropriate intervals in the circumferential direction at an example of a joint portion between the annular casing 14 and the damper plate 12 in the axial direction. It is provided radially. The rib 28
Is formed so that the cross-sectional shape in a plane including the axis forms a substantially triangular shape, as is well shown in the cross-sectional view of FIG.
Also, as shown in FIG. 1, the damper plate 12 is arranged on a radius line connecting the centers of the plurality of bolt holes 30 for fixing the damper plate 12 to the rotation shaft and the center of the rotation shaft.
【００１１】一方、環状ケーシング１４とダンパプレー
ト１２の軸線方向他側の接合部分には、図１及び図３に
良く示されているように、円周方向全周にわたり連続し
た大きい曲率半径Ｒｏの隅肉接続曲面即ちアール面３２
が形成されている。On the other hand, the joint portion of the annular casing 14 and the damper plate 12 on the other side in the axial direction has a large radius of curvature Ro that is continuous over the entire circumference in the circumferential direction, as is well shown in FIGS. Fillet connection curved surface or radius surface 32
Are formed.
【００１２】上記ビスカスダンパ１０は、エンジンのク
ランク軸等回転軸の捩り振動に際して、環状ケーシング
１４の内壁面と慣性体２０の外周面との間に生ずる相対
回転変位により、シリコンオイル２２の粘性に基づく剪
断抵抗が生起されて制振効果を奏するものである。一
方、エンジンのクランク軸に上記ビスカスダンパ１０が
取付けられた場合、クランク軸は上記捩り振動の外に、
曲げ振動を生起することがあり、この場合、ビスカスダ
ンパ１０はクランク軸軸線方向前後に往復傾動する変位
を起こすので、慣性体２０を内蔵した環状ケーシング１
４とダンパプレート１２との接合部分の強度を確保する
ことが重要である。The viscous damper 10 reduces the viscosity of the silicon oil 22 due to the relative rotational displacement generated between the inner wall surface of the annular casing 14 and the outer peripheral surface of the inertia body 20 during torsional vibration of the rotating shaft such as the crankshaft of the engine. In this case, a shear resistance based on the shear force is generated, and a vibration damping effect is obtained. On the other hand, when the viscous damper 10 is attached to the crankshaft of the engine, the crankshaft will
Bending vibration may occur, and in this case, the viscous damper 10 causes a displacement of reciprocating tilting back and forth in the axial direction of the crankshaft.
It is important to ensure the strength of the joint between the damper plate 4 and the damper plate 12.
【００１３】さて、上記本発明に係るビスカスダンパ１
０では、環状ケーシング１４及びダンパプレート１２
が、ダクタイル鋳鉄等により一体的に鋳造されたのち、
環状ケーシング１４の慣性体２０を収容する内壁面やダ
ンパプレート１２の軸線に対し直交する前後端面等必要
最小限の機械加工が施され、リブ２８等は鋳肌のまま切
削されない。したがつて、従来製造コスト増大の主因と
なつていた機械加工工数を低減し、製造コストを大巾に
低減することができる。Now, the viscous damper 1 according to the present invention described above.
0, the annular casing 14 and the damper plate 12
After being integrally cast with ductile cast iron, etc.,
Necessary minimum machining is performed on the inner wall surface of the annular casing 14 that houses the inertia body 20 and the front and rear end surfaces orthogonal to the axis of the damper plate 12, and the ribs 28 and the like are not cut as cast. Therefore, it is possible to reduce the number of man-hours for machining, which has conventionally been a main cause of the increase in manufacturing cost, and to greatly reduce the manufacturing cost.
【０００４】また、軸線方向一側における環状ケーシン
グ１４とダンパプレート１２との接合部分に、複数の断
面形状が略三角形をなすリブ２８が放射状に設けられて
いるので、クランク軸等回転軸が捩り振動のみならず曲
げ振動を起こした場合でも、必要な強度を確保すること
ができる。また、上記リブ２８をボルト孔３０と半径方
向に一線をなすように配置することによつて、ボルト孔
３０の穿設に基因する強度低下を効果的に回避すること
ができる。Further, since a plurality of ribs 28 having a substantially triangular cross section are radially provided at the joint portion between the annular casing 14 and the damper plate 12 on one side in the axial direction, the rotating shaft such as the crankshaft is twisted. Necessary strength can be ensured not only when vibration occurs but also when bending vibration occurs. Further, by arranging the ribs 28 so as to be in line with the bolt holes 30 in the radial direction, it is possible to effectively avoid a decrease in strength due to the drilling of the bolt holes 30.
【００１５】さらに、環状ケーシング１４とダンパプレ
ート１２との接合部分における軸線方向他側に、円周方
向全周にわたつて形成された大きい曲率半径Ｒｏの隅部
接続曲面部３２も勿論、上記回転軸の曲げ振動に際し
て、必要な強度を確保するために有効に寄与する。Further, on the other side in the axial direction at the joint portion between the annular casing 14 and the damper plate 12, the corner connecting curved surface portion 32 having a large radius of curvature Ro formed over the entire circumference in the circumferential direction is, of course, the rotation. In bending vibration of the shaft, it effectively contributes to secure necessary strength.
【００１６】なおまた、上記のように環状ケーシング１
４及びダンパプレート１２が一体的に鋳造され、その後
機械加工されず鋳肌のまま存置される部分が多いため、
不平衡重量が存在することが多くビスカスダンパ自体が
振動源となる可能性が大きい。これを防止するために
は、勿論静的及び動的バランスをとる必要があるが、こ
の場合、円周方向全周にわたり隅部接続曲面部３２が形
成されているので、バランシングマシンにより検知され
た不平衡重量を、図３に穿孔３４で示されているよう
に、任意の角位置において必要な重量だけ上記曲面部３
２から除去することができる利点がある。Further, as described above, the annular casing 1
4 and the damper plate 12 are integrally cast, and since there are many parts that are not machined and remain as cast surfaces,
An unbalanced weight is often present, and the viscous damper itself is likely to be a vibration source. In order to prevent this, it is, of course, necessary to balance static and dynamic, but in this case, since the corner connecting curved surface portion 32 is formed over the entire circumference in the circumferential direction, it is detected by the balancing machine. As shown by the perforations 34 in FIG.
2 has the advantage that it can be removed.
【００１７】なお、上記実施例では、環状ケーシング１
４及びダンパプレート１２が、ダクタイル鋳鉄等により
鋳造される場合について説明したが、アルミニウム合金
等の鍛造材により上記環状ケーシング１４及びダンパプ
レート１２を一体的に鍛造する場合にも、本発明を同様
に適用することができ、上記と略同様の効果を奏し得る
ことは明らかである。さらに、上記実施例に示した隅部
接続曲面部３２に代え、図１に一点鎖線で示されている
ような環状の棚部３２′を設け、同棚部３２′にバラン
ス用の穿孔３４を設けることができる。In the above embodiment, the annular casing 1
4 and the damper plate 12 have been described as being cast with ductile cast iron or the like. However, the present invention is similarly applicable to the case where the annular casing 14 and the damper plate 12 are integrally forged with a forging material such as an aluminum alloy. Obviously, the present invention can be applied, and substantially the same effects as described above can be obtained. Further, instead of the corner connection curved surface portion 32 shown in the above embodiment, an annular shelf portion 32 'as shown by a dashed line in FIG. 1 is provided, and a perforation 34 for balance is provided in the shelf portion 32'. Can be provided.
【００１８】[0018]
【発明の効果】叙上のように、本発明に係るビスカスダ
ンパ装置は、回転軸に固着されて同回転軸と一体に回転
する板状のダンパプレートと、同ダンパプレートの外周
部分に上記回転軸に対し同心的に配設された中空環状の
ケーシングと、同ケーシング内にその内壁面との間に適
宜の小間隙を存して収容された環状の慣性体と、同ケー
シング内壁面と上記慣性体との間の間隙に充填されたシ
りコソオイル等の粘性液とを有するビスカスダンパにお
いて、同ビスカスダンパの軸線方向一側における上記ケ
ーシングとダンパプレートとの接合部分に、円周方向に
適宜の間隔を存して上記軸線を含む平面内の断面形状が
略三角形状をなすリブが放射状に配設され、かつ軸線方
向他側における上記ケーシングとダンパプレートとの接
合部分には、円周方向全周にわたり連続した大きい曲率
半径の隅部接続曲面部又は環状棚部が形成されているこ
とを特徴とし、強度が高く従つて耐久性及び信頼性が優
れ、また静的及び動的バランスを十分にとることができ
るので振動源となることがない鋳造又は鍛造製ケーシン
グ及びダンパプレートを有するビスカスダンパを安価に
提供することができる利点がある。As described above, the viscous damper device according to the present invention includes a plate-shaped damper plate fixed to a rotating shaft and rotating integrally with the rotating shaft, and the rotating member mounted on an outer peripheral portion of the damper plate. A hollow annular casing disposed concentrically with respect to the shaft, an annular inertial body accommodated in the casing with an appropriate small gap between its inner wall surface, In a viscous damper having a viscous liquid such as silicon oil filled in a gap between the inertial body and a viscous liquid, such as a silicone oil, a joint portion between the casing and the damper plate on one axial side of the viscous damper is appropriately provided in a circumferential direction. A rib having a substantially triangular cross-section in a plane including the axis is radially disposed at intervals, and a joining portion between the casing and the damper plate on the other side in the axial direction has a circumferential shape. It is characterized by the formation of a corner connecting curved surface or an annular ledge with a large radius of curvature that is continuous over the entire circumference, and has high strength, therefore has excellent durability and reliability, and has a good balance between static and dynamic. There is an advantage that a viscous damper having a cast or forged casing and a damper plate, which can be sufficiently obtained and does not become a vibration source, can be provided at low cost.
【図１】本発明の一実施例を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.
【図２】図１の矢印ＩＩ方向から視た部分的正面図であ
る。FIG. 2 is a partial front view as viewed from the direction of arrow II in FIG. 1;
【図３】図１の矢印ＩＩＩ方向から視た部分的正面図で
ある。FIG. 3 is a partial front view as viewed from the direction of arrow III in FIG. 1;
１０ ビスカスダンパ １２ ダンパプレート １４ 環状ケーシング ２０ 慣性体 ２８ リブ ３２ 隅部接続曲面部 DESCRIPTION OF SYMBOLS 10 Viscous damper 12 Damper plate 14 Annular casing 20 Inertial body 28 Rib 32 Corner connection curved surface
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) F16F 15/16 - 15/173 F02B 77/00──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) F16F 15/16-15/173 F02B 77/00
Claims (1)
転する板状のダンパプレートと、同ダンパプレートの外
周部分に上記回転軸に対し同心的に配設された中空環状
のケーシングと、同ケーシング内にその内壁面との間に
適宜の小間隙を存して収容された環状の慣性体と、同ケ
ーシング内壁面と上記慣性体との間の間隙に充填された
シリコンオイル等の粘性液とを有するビスカスダンパに
おいて、同ビスカスダンパの軸線方向一側における上記
ケーシングとダンパプレートとの接合部分に、円周方向
に適宜の間隔を存して上記軸線を含む平面内の断面形状
が略三角形状をなすリブが放射状に配設され、かつ軸線
方向他側における上記ケーシングとダンパプレートとの
接合部分には、円周方向全周にわたり連続した大きい曲
率半径の隅部接続曲面部又は環状棚部が形成されている
ことを特徴とするビスカスダンパ装置A damper plate fixed to a rotating shaft and rotating integrally with the rotating shaft; a hollow annular casing disposed concentrically with the rotating shaft on an outer peripheral portion of the damper plate; An annular inertial body accommodated in the casing with an appropriate small gap between the casing and an inner wall surface thereof, and a silicone oil or the like filled in a gap between the casing inner wall surface and the inertial body. In a viscous damper having a viscous liquid, a cross-sectional shape in a plane including the axis is provided at a joint portion between the casing and the damper plate on one axial side of the viscous damper at an appropriate interval in a circumferential direction. A substantially triangular rib is radially disposed, and a connecting portion between the casing and the damper plate on the other side in the axial direction has a corner connecting curve having a large radius of curvature continuous over the entire circumference in the circumferential direction. A viscous damper device having a surface or an annular shelf formed thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4343094A JP2816378B2 (en) | 1992-11-10 | 1992-11-10 | Viscous damper device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4343094A JP2816378B2 (en) | 1992-11-10 | 1992-11-10 | Viscous damper device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06147269A JPH06147269A (en) | 1994-05-27 |
| JP2816378B2 true JP2816378B2 (en) | 1998-10-27 |
Family
ID=18358898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4343094A Expired - Lifetime JP2816378B2 (en) | 1992-11-10 | 1992-11-10 | Viscous damper device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2816378B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007177851A (en) * | 2005-12-27 | 2007-07-12 | Fukoku Co Ltd | Viscous damper |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59160938U (en) * | 1983-04-14 | 1984-10-27 | 三菱自動車工業株式会社 | damper device |
| JP2579119Y2 (en) * | 1990-11-15 | 1998-08-20 | 三菱自動車工業株式会社 | Viscous damper |
-
1992
- 1992-11-10 JP JP4343094A patent/JP2816378B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06147269A (en) | 1994-05-27 |
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