JPH0210357Y2 - - Google Patents
Info
- Publication number
- JPH0210357Y2 JPH0210357Y2 JP1983159506U JP15950683U JPH0210357Y2 JP H0210357 Y2 JPH0210357 Y2 JP H0210357Y2 JP 1983159506 U JP1983159506 U JP 1983159506U JP 15950683 U JP15950683 U JP 15950683U JP H0210357 Y2 JPH0210357 Y2 JP H0210357Y2
- Authority
- JP
- Japan
- Prior art keywords
- crankshaft
- stepped ring
- damper pulley
- hub
- mass
- 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)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、内燃機関のクランク軸の変動トルク
によつて生ずる捩じり振動を減衰するダンパプー
リに関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a damper pulley that damps torsional vibrations caused by fluctuating torque of the crankshaft of an internal combustion engine.
内燃機関のクランク軸は、変動トルクを受ける
ため、複雑な捩じり振動が発生する。このため、
従来は、第１図で示されるように、クランク軸１
２の先端にダンパプーリ１を取り付けてクランク
軸１２の捩じり振動を減衰させていた。
Since the crankshaft of an internal combustion engine is subjected to fluctuating torque, complex torsional vibrations occur. For this reason,
Conventionally, as shown in FIG.
A damper pulley 1 is attached to the tip of the crankshaft 12 to damp torsional vibrations of the crankshaft 12.
このダンパプーリ１は、第２図に示されるよう
に、ハブ部材２の外周に、ゴムでできた弾発部材
３を介して、円環状の質量部材４が取り付けられ
た構成をとる。 As shown in FIG. 2, this damper pulley 1 has a configuration in which an annular mass member 4 is attached to the outer periphery of a hub member 2 via a resilient member 3 made of rubber.
そして、質量部材４の慣性力と弾発部材４の弾
性変形をクランク軸の捩じり振動特性にチユーニ
ングさせて、クランク軸から発生する捩じり振動
を減衰させている。 The inertial force of the mass member 4 and the elastic deformation of the resilient member 4 are tuned to the torsional vibration characteristics of the crankshaft, thereby damping the torsional vibration generated from the crankshaft.
このような、質量部材と弾性部材からなるダン
パプーリを示した従来技術は、例えば実開昭56−
151551，実開昭58−149646等がある。 A conventional technique showing such a damper pulley consisting of a mass member and an elastic member is, for example,
There are 151551, 149646, etc.
ところで、ダンパプーリの弾発部材は、大気と
接する面積が小さいために、内部に生ずる熱の放
熱効率が悪く、そのため熱劣化が著しく早められ
て捩じり振動の減衰能力が早期に低下してしまう
問題があつた。
By the way, since the resilient member of the damper pulley has a small area in contact with the atmosphere, the heat generated inside is not efficiently dissipated, and as a result, thermal deterioration is significantly accelerated and the torsional vibration damping ability is quickly reduced. There was a problem.
そのため従来の弾発部材においては、弾性変形
によるエネルギー吸収によつて内部に発生した熱
を放熱するための効率を上げるためには、弾発部
材に中空部，溝部等を貫通させて、大気と接する
面積を大きくする必要があつた。 Therefore, in conventional elastic members, in order to increase the efficiency of dissipating the heat generated inside due to energy absorption due to elastic deformation, hollow parts, grooves, etc. are penetrated in the elastic member to connect it to the atmosphere. It was necessary to increase the contact area.
しかしながら、弾発部材に放熱のため、中空
部，溝部を設けると、放熱効率は上がるものの、
肝心の弾性変形によるエネルギー吸収能力が下が
り、捩じり振動の減衰作用が低下してしまうとい
う問題が生じている。 However, if hollow parts and grooves are provided in the elastic member for heat radiation, although the heat radiation efficiency increases,
This poses a problem in that the ability to absorb energy through elastic deformation, which is important, decreases and the damping effect of torsional vibration decreases.
そこで、この考案の課題は、弾性変形による捩
じり振動の減衰作用に加えて、さらに別の手段に
よる減衰作用を付加することにより、振動減衰作
用の向上をさせることである。 Therefore, an object of this invention is to improve the vibration damping effect by adding a damping effect by another means in addition to the torsional vibration damping effect due to elastic deformation.
そのためこの考案は、弾発部材の弾性変形によ
る振動減衰作用に加えて、弾発部材の、ハブ部材
またはプーリ部材とのミクロ的な相対変位による
摩擦による振動減衰作用を採り入れ、さらにその
摩擦熱発生部分の近傍に放熱部材を設けることに
より、課題を解決するものである。
Therefore, in addition to the vibration damping effect due to the elastic deformation of the elastic member, this invention incorporates a vibration damping effect due to the friction caused by the microscopic relative displacement of the elastic member with the hub member or pulley member, and furthermore, the frictional heat generated by the elastic member is The problem is solved by providing a heat dissipating member near the portion.
具体的には、クランク軸取付け孔が穿設された
ハブ部材の周囲に、円環状の弾発部材を介して、
円環状の質量部材を取り付けたダンパプーリにお
いて、前記散発部材と前記ハブ部材との間あるい
は前記弾発部材と前記質量部材との間の少なくと
も一方に波板状の段付リングを圧入し、前記段付
リングと、前記ハブ部材あるいは、前記質量部材
とで、前記プーリ軸方向に貫通する通気孔が郭成
されていることを特徴とするものである。 Specifically, a ring-shaped resilient member is placed around a hub member in which a crankshaft mounting hole is drilled, and
In a damper pulley to which an annular mass member is attached, a corrugated stepped ring is press-fitted between the sporadic member and the hub member or between the resilient member and the mass member, and the stepped ring is press-fitted into the damper pulley. The attachment ring and the hub member or the mass member are characterized in that a ventilation hole is defined in the pulley axial direction.
上述の手段によれば、クランク軸の捩じり振動
に対して剛性の低い波板状の段付リングが変形
し、段付リングとハブ部材およびプーリ部材とが
ミクロ的に相対変位することによつて、その間に
生ずる摩擦により、クランク軸の捩じり振動を摩
擦低減するとともに、この摩擦により生ずる熱
を、摩擦熱の生じている面の近傍に設けた通気孔
により冷却することができる。
According to the above-mentioned means, the corrugated stepped ring with low rigidity is deformed by the torsional vibration of the crankshaft, and the stepped ring, the hub member, and the pulley member are microscopically displaced relative to each other. Therefore, the friction generated between them can reduce the torsional vibration of the crankshaft, and the heat generated by this friction can be cooled by the vent provided near the surface where the frictional heat is generated.
以下、本発明の実施例を図面を基に説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第３図は、本考案の第１の実施例の部分正面図
である。 FIG. 3 is a partial front view of the first embodiment of the present invention.
同図において内燃機関のダンパプーリ１は、ハ
ブ部材２と、該ハブ部材２の外周に、ゴムででき
た弾発部材３を介して取り付けられた円環状の質
量部材４とを有する。ハブ部材２の中央部にはク
ランク軸取り付け孔（図示せず）が穿設されてい
る。該クランク軸取り付け孔には、第１図のクラ
ンク軸１２が嵌装される。ダンパプーリ１全体
は、図示しないセツトボルトにより、クランク軸
１２に固着される。このようなダンパプーリ１
は、質量部材４の慣性力と弾発部材３の弾性変形
によつてダイナミツクダンパ機能を発揮し、クラ
ンク軸１２の捩じり振動を吸収する。 In the figure, a damper pulley 1 for an internal combustion engine includes a hub member 2 and an annular mass member 4 attached to the outer periphery of the hub member 2 via a resilient member 3 made of rubber. A crankshaft attachment hole (not shown) is bored in the center of the hub member 2 . The crankshaft 12 shown in FIG. 1 is fitted into the crankshaft mounting hole. The entire damper pulley 1 is fixed to the crankshaft 12 by a set bolt (not shown). Damper pulley 1 like this
exerts a dynamic damper function by the inertial force of the mass member 4 and the elastic deformation of the resilient member 3, and absorbs the torsional vibration of the crankshaft 12.
また、弾発部材３には、多数の冷却パイプ７が
埋設されている。冷却パイプ７は、クランク軸取
り付け孔５に略平行に延び、かつ、弾発部材３を
貫通している。 Further, a large number of cooling pipes 7 are embedded in the resilient member 3. The cooling pipe 7 extends substantially parallel to the crankshaft mounting hole 5 and passes through the resilient member 3.
冷却パイプ７は、第４図のａ，ｂに示されるよ
うに、アーム１０によつて、互いに連結されてい
る。 The cooling pipes 7 are connected to each other by arms 10, as shown in FIGS. 4a and 4b.
この冷却パイプ７を埋設したことにより、ダン
パプーリ１の回転時、冷却パイプ７を空気が通り
抜けて、弾発部材３を冷却する。 By embedding this cooling pipe 7, air passes through the cooling pipe 7 when the damper pulley 1 rotates, thereby cooling the resilient member 3.
そして本考案の特徴とする構造は、前記ダンパ
プーリ１のハブ部材２と弾発部材３との間、およ
び、質量部材４と弾発部材３との間に、弾発部材
３よりも剛性を低くした波板状の段付リング６が
圧入したことである。 The structure of the present invention is such that the rigidity is lower than that of the elastic member 3 between the hub member 2 and the elastic member 3 of the damper pulley 1, and between the mass member 4 and the elastic member 3. This is because the corrugated stepped ring 6 is press-fitted.
この波板状の段付リング６は、段付リング６と
ハブ部材２の外壁面、および、段付リング６と質
量部材４の内壁面とともに、クランク軸取付孔に
略平行に延びる多数の通気孔８が形成している。
そして本実施例においては、弾発部材３は、段付
リング６に加硫接着されている。また段付リング
６は、ハブ部材２および質量部材４に圧接してい
る。 The corrugated stepped ring 6 has a large number of passages extending substantially parallel to the crankshaft mounting hole together with the outer wall surfaces of the stepped ring 6 and the hub member 2, and the inner wall surfaces of the stepped ring 6 and the mass member 4. Pores 8 are formed.
In this embodiment, the resilient member 3 is vulcanized and bonded to the stepped ring 6. Further, the stepped ring 6 is in pressure contact with the hub member 2 and the mass member 4.
この段付リング６は、ダンパプーリ１の回転時
には、剛性が低いため変形し、圧接しているハブ
部材４の外壁面、および、質量部材４の内壁面に
対して、ミクロ的に相対変位するので、クランク
軸の捩じり振動を、圧接面における摩擦によつて
も減衰することができる。 When the damper pulley 1 rotates, the stepped ring 6 deforms due to its low rigidity and is microscopically displaced relative to the outer wall surface of the hub member 4 and the inner wall surface of the mass member 4, which are in pressure contact with each other. The torsional vibration of the crankshaft can also be damped by the friction on the pressure contact surface.
そして、この摩擦により生じた熱は、摩擦熱の
生じている圧接面の近傍に設けた通気孔８により
放熱することができるので、放熱効率は非常によ
い。 The heat generated by this friction can be radiated through the ventilation holes 8 provided in the vicinity of the pressed surfaces where the frictional heat is generated, so that the heat radiation efficiency is very high.
このように、段付リングを設けたことにより、
従来の弾発部材の弾性変形による捩じり振動の減
衰作用に加えて、さらに摩擦による減衰作用も加
わるので、捩じり振動減衰作用をさらに向上する
ことができる。 In this way, by providing a stepped ring,
In addition to the conventional damping effect of torsional vibration due to the elastic deformation of the resilient member, a damping effect due to friction is also added, so that the torsional vibration damping effect can be further improved.
また、段付リングは、摩擦熱の生じている圧接
面の近傍に通気孔を設けているので、摩擦熱の放
熱効率を上げることもできる。 Further, since the stepped ring has ventilation holes near the pressure contact surface where frictional heat is generated, it is also possible to improve the heat dissipation efficiency of the frictional heat.
以上のように本考案は、クランク軸に取り付け
たダンパプーリにおいて、弾発部材とハブ部材と
の間あるいは弾発部材と質量部材との間の少なく
とも一方に波板状の段付リングを圧入したので、
弾発部材の弾性変形による捩じり振動の減衰作用
に加えて、段付リングが、ハブ部材あるいは質量
部材との間でミクロ的な相対変位により生ずる摩
擦減衰作用を生じさせるため、捩じり振動の減衰
作用をさらに向上することができる。
As described above, in the present invention, in the damper pulley attached to the crankshaft, a corrugated stepped ring is press-fitted between the resilient member and the hub member or between the resilient member and the mass member. ,
In addition to the torsional vibration damping effect caused by the elastic deformation of the elastic member, the stepped ring produces a frictional damping effect caused by microscopic relative displacement between it and the hub member or mass member. The vibration damping effect can be further improved.
また、段付リングは、摩擦熱の生じている圧接
面の近傍に通気孔を設けているので、摩擦熱の放
熱効率を上げることもできる。 Further, since the stepped ring has ventilation holes near the pressure contact surface where frictional heat is generated, it is also possible to improve the heat dissipation efficiency of the frictional heat.
第１図は、内燃機関の正面図、第２図は、従来
の内燃機関のダンパプーリの縦断面図、第３図
は、本考案の部分断面図、第４図のａは、第３図
の冷却パイプの部分正面図、第４図のｂは、第３
図の冷却パイプの部分縦断面図、
１……ダンパプーリ、２……ハブ部材、３……
弾発部材、４……質量部材、６……段付リング、
８……通気孔。
Fig. 1 is a front view of an internal combustion engine, Fig. 2 is a vertical cross-sectional view of a damper pulley of a conventional internal combustion engine, Fig. 3 is a partial cross-sectional view of the present invention, and a in Fig. 4 is the same as that in Fig. 3. Partial front view of the cooling pipe, b in Fig. 4 is the third
Partial longitudinal sectional view of the cooling pipe shown in the figure, 1... Damper pulley, 2... Hub member, 3...
Resilient member, 4...Mass member, 6...Stepped ring,
8...Vent hole.
Claims (1)
囲に、円環状の弾発部材を介して、円環状の質量
部材を取り付けたダンパプーリにおいて、前記弾
発部材と前記ハブ部材との間あるいは前記弾発部
材と前記質量部材との間の少なくとも一方に波板
状の段付リングを圧入し、前記段付リングと、前
記ハブ部材あるいは、前記質量部材とで、前記プ
ーリ軸方向に貫通する通気孔が郭成されているこ
とを特徴とする内燃機関のダンパプーリ。 In a damper pulley in which an annular mass member is attached around a hub member in which a crankshaft mounting hole is bored, via an annular elastic member, there is a gap between the elastic member and the hub member, or A corrugated stepped ring is press-fitted into at least one of the generating member and the mass member, and the stepped ring and the hub member or the mass member are provided with a ventilation hole penetrating in the axial direction of the pulley. A damper pulley for an internal combustion engine, characterized in that it has a structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15950683U JPS6067449U (en) | 1983-10-14 | 1983-10-14 | Internal combustion engine damper pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15950683U JPS6067449U (en) | 1983-10-14 | 1983-10-14 | Internal combustion engine damper pulley |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6067449U JPS6067449U (en) | 1985-05-13 |
| JPH0210357Y2 true JPH0210357Y2 (en) | 1990-03-14 |
Family
ID=30351103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15950683U Granted JPS6067449U (en) | 1983-10-14 | 1983-10-14 | Internal combustion engine damper pulley |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6067449U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE602004019499D1 (en) * | 2003-03-07 | 2009-04-02 | Nok Corp | ELECTROMAGNETIC CLUTCH |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56151551U (en) * | 1980-04-14 | 1981-11-13 | ||
| JPS58149646U (en) * | 1982-03-31 | 1983-10-07 | 東海ゴム工業株式会社 | Cylindrical torsional damper |
-
1983
- 1983-10-14 JP JP15950683U patent/JPS6067449U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6067449U (en) | 1985-05-13 |
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