JPH0327780B2 - - Google Patents
Info
- Publication number
- JPH0327780B2 JPH0327780B2 JP56174740A JP17474081A JPH0327780B2 JP H0327780 B2 JPH0327780 B2 JP H0327780B2 JP 56174740 A JP56174740 A JP 56174740A JP 17474081 A JP17474081 A JP 17474081A JP H0327780 B2 JPH0327780 B2 JP H0327780B2
- Authority
- JP
- Japan
- Prior art keywords
- hub
- damper
- belt
- large diameter
- outer periphery
- 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
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000004904 shortening Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/14—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
- F16F15/1407—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers the rotation being limited with respect to the driving means
- F16F15/1414—Masses driven by elastic elements
- F16F15/1435—Elastomeric springs, i.e. made of plastic or rubber
- F16F15/1442—Elastomeric springs, i.e. made of plastic or rubber with a single mass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
- F16F15/124—Elastomeric springs
- F16F15/126—Elastomeric springs consisting of at least one annular element surrounding the axis of rotation
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Pulleys (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は動力を伝達する回転軸のダンパ装置に
関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a damper device for a rotating shaft that transmits power.
（従来技術）
動力を伝達する回転軸の一つとしてクランク軸
があるが、該クランク軸はその回転に伴なつて所
謂ねじり振動を発生することが知られている。(Prior Art) A crankshaft is one of the rotating shafts that transmits power, and it is known that the crankshaft generates so-called torsional vibration as it rotates.
従つて、前記振動を防止すべく従来クランク軸
にはダンパ装置が設けられている。 このダンパ
装置はクランク軸の端部に筒状のハブを該軸と一
体に回転するよう取付け、そのハブ外周に、二つ
のダンパウエイトとを夫々弾性体を介して軸線方
向に間隔をおいて嵌着した構造となつている。 Therefore, a damper device is conventionally provided on the crankshaft in order to prevent the vibration. This damper device has a cylindrical hub attached to the end of the crankshaft so as to rotate together with the shaft, and two damper weights are fitted onto the outer periphery of the hub at intervals in the axial direction through elastic bodies. It has a built-in structure.
そして、ハブの外周にベルト掛け部を形成する
と共に、ダンパウエイトの外周部にも他のベルト
掛け部を設けたものがある。 There is also one in which a belt hook part is formed on the outer periphery of the hub, and another belt hook part is also provided on the outer periphery of the damper weight.
ところが、斯る構造では二つのダンパウエイト
の嵌合長を確保するため及びベルト掛け部を形成
するためにハブが軸線方向に長くなつてダンパ装
置が大型化し、全体の小型化を計る上で障害とな
つていた。 However, in such a structure, the hub becomes longer in the axial direction to ensure the fitting length of the two damper weights and to form the belt hanging part, which increases the size of the damper device, which poses an obstacle in reducing the overall size. It was becoming.
さらに、軸線方向に長くなつたハブに対しベル
ト張力が作用するので、ハブ自身も強度の確保が
困難となつていた。 Furthermore, since belt tension acts on the hub, which is elongated in the axial direction, it has been difficult to ensure the strength of the hub itself.
（本発明が解決しようとする課題）
本発明は叙上事情に鑑みてなされたもので、ハ
ブの軸線方向の長さを短縮してダンパ装置の小型
化を計ると共に、ハブ自身の強度の向上を計るこ
とを課題とする。(Problems to be Solved by the Present Invention) The present invention has been made in view of the above-mentioned circumstances, and aims to downsize the damper device by shortening the length of the hub in the axial direction, and to improve the strength of the hub itself. The task is to measure the
（課題を解決する為の手段）
上記した課題を解決する為に、本発明の回転軸
のダンパ装置は、動力を伝達する回転軸の端部に
該軸と一体に回転するよう筒状のハブが取付けら
れ、該ハブの外周にベルト掛け部を形成すると共
に、他のベルト掛け部を有する第一のダンパウエ
イトと、ベルト掛け部を有さない第二のダンパウ
エイトとが前記ハブに弾性体を介して嵌着された
回転軸のダンパ装置において、
上記ハブを大径部、回転軸への取付けのための
ボス部及びその両者間を連結する連結部にて構成
し、第一のダンパウエイトを大径部の外周部、第
二のダンパウエイトを大径部の内周部に嵌着させ
ると共に、前記ハブの大径部と連結部との接続部
がハブの外周に形成されたベルト掛け部と第一の
ダンパウエイトとの間の内周側に位置するように
形成されたものである。(Means for Solving the Problems) In order to solve the above problems, the rotary shaft damper device of the present invention includes a cylindrical hub at the end of the rotary shaft that transmits power so as to rotate integrally with the shaft. is attached to the hub and forms a belt hooking portion on the outer periphery of the hub, and a first damper weight having another belt hooking portion and a second damper weight having no belt hooking portion are attached to the hub with an elastic body. In a damper device for a rotary shaft fitted through a rotary shaft, the hub is composed of a large diameter portion, a boss portion for attachment to the rotary shaft, and a connecting portion connecting the two, and a first damper weight is fitted onto the outer periphery of the large diameter portion, a second damper weight is fitted onto the inner periphery of the large diameter portion, and a connecting portion between the large diameter portion of the hub and the connecting portion is formed on the outer periphery of the hub. It is formed so as to be located on the inner peripheral side between the first damper weight and the first damper weight.
（実施例）
本発明実施の一例を内燃機関におけるクランク
軸のダンパ装置について図面により説明すると、
図中１はクランク軸、２はハブである。(Example) An example of implementing the present invention will be described with reference to drawings regarding a damper device for a crankshaft in an internal combustion engine.
In the figure, 1 is a crankshaft, and 2 is a hub.
上記ハブ２は段付の筒状に形成され、その小径
部即ちボス部２ａがクランク軸１の端部にキー３
を介して該軸１と一体に回転するよう取付けら
れ、大径部２ｂがクランク軸１側方へ突出し、前
記ボス部２ａと大径部２ｂとが連結部２ｃにより
連結されて構成されている。 The hub 2 is formed into a stepped cylindrical shape, and its small diameter portion, that is, the boss portion 2a is attached to the end of the crankshaft 1 with a key 3.
The crankshaft 1 is attached to rotate together with the crankshaft 1 through the crankshaft 1, the large diameter portion 2b protrudes to the side of the crankshaft 1, and the boss portion 2a and the large diameter portion 2b are connected by a connecting portion 2c. .
そして、このハブ２の大径部２ｂ外周に第一の
ダンパウエイト４が設けられるが、このダンパウ
エイト４は前記大径部２ｂの外径よりも大径な筒
状に形成されている。 A first damper weight 4 is provided on the outer periphery of the large diameter portion 2b of the hub 2, and this damper weight 4 is formed into a cylindrical shape having a larger diameter than the outer diameter of the large diameter portion 2b.
５は前記ダンパウエイト４の内周に焼付けられ
たゴム材等からなる弾性体であり、この弾性体５
を介してダンパウエイト４がハブ２の大径部２ｂ
外周に嵌着されるようになつている。 Reference numeral 5 denotes an elastic body made of a rubber material etc. baked onto the inner periphery of the damper weight 4;
The damper weight 4 is connected to the large diameter portion 2b of the hub 2 via
It is designed to be fitted around the outer periphery.
前記ダンパウエイト４の嵌着に際しては、該ウ
エイト４を一旦ハブ２の大径部２ｂ端部より更に
クランク軸１側へ押し込んで後述するベルト掛け
部１０の外周に嵌合させ、その後所定位置まで引
き戻すようにしており、これによつて弾性体５を
押し縮めてそれに予め径方向の初期荷重をかけ、
弾性体５の耐久性を高めてある。 When fitting the damper weight 4, the weight 4 is once pushed further toward the crankshaft 1 side from the end of the large diameter portion 2b of the hub 2, and fitted onto the outer periphery of the belt hanging portion 10, which will be described later, and then pushed to a predetermined position. By this, the elastic body 5 is compressed and an initial load in the radial direction is applied to it in advance.
The durability of the elastic body 5 is increased.
従つて、上記ダンパウエイト４の嵌着に際して
該ウエイト４及び弾性体５がハブ２から外れない
ようにするため、該ハブ２の大径部２ｂにおける
軸線方向の長さがダンパウエイト４の嵌合長より
も長く設定されている。 Therefore, in order to prevent the weight 4 and the elastic body 5 from coming off the hub 2 when the damper weight 4 is fitted, the length in the axial direction at the large diameter portion 2b of the hub 2 is set so that the damper weight 4 is fitted into the hub 2. It is set longer than the length.
しかして、上記ハブ２外周に嵌着されたダンパ
ウエイト４はその回転に伴つて慣性モーメントを
発生し、それによりクランク軸１の振動を有効に
消去する。 The damper weight 4 fitted around the outer periphery of the hub 2 generates a moment of inertia as it rotates, thereby effectively canceling vibrations of the crankshaft 1.
一方、上記ダンパウエイト４は内燃機関におけ
る補器類を駆動させる駆動用プーリとして共用さ
れるようになつており、その外周に２つのベルト
掛け部４ａが形成されている。 On the other hand, the damper weight 4 is commonly used as a drive pulley for driving auxiliary equipment in an internal combustion engine, and has two belt hooks 4a formed on its outer periphery.
６は前記ベルト掛け部４ａに並列的に複数形成
された凹条であり、この凹条６にベルト７内周に
突設された凸条７ａが嵌め合つて該ベルト７が滑
り止めされている。 Reference numeral 6 denotes a plurality of grooves formed in parallel on the belt hanging portion 4a, and a protrusion 7a protruding from the inner periphery of the belt 7 is fitted into the groove 6 to prevent the belt 7 from slipping. .
図中８はハブ２の大径部２ｂ内周に弾性体９を
介して嵌着された第二のダンパウエイトであり、
このダンパウエイト８によつてもクランク軸１の
振動が消去されるようになつている。 8 in the figure is a second damper weight fitted to the inner periphery of the large diameter portion 2b of the hub 2 via an elastic body 9;
Vibration of the crankshaft 1 is also canceled by the damper weight 8.
しかして、斯るダンパ装置において、そのハブ
２の大径部２ｂ外周におけるダンパウエイト４と
の嵌合部から外れた部分にベルト掛け部１０が一
体に形成される。 Thus, in such a damper device, a belt hanging portion 10 is integrally formed at a portion of the outer periphery of the large diameter portion 2b of the hub 2 that is disengaged from the fitting portion with the damper weight 4.
ベルト掛け部１０は補器類を駆動させるベルト
１２を巻回装着するものであり、その外径寸法を
前記ダンパウエイト４の内径よりも小さく形成し
てある。これによつて、ダンパウエイト４の嵌着
に際して該ウエイト４をハブ２の標準的な嵌着位
置より更にクランク軸１側へ押し込んだ状態で、
ダンパウエイト４の内周が該ベルト掛け部１０の
外周に幾分の余裕をもつて嵌合される様に構成し
てある。 The belt hanging part 10 is used to wind and attach a belt 12 for driving auxiliary equipment, and its outer diameter is smaller than the inner diameter of the damper weight 4. As a result, when the damper weight 4 is fitted, the weight 4 is pushed further toward the crankshaft 1 side than the standard fitting position of the hub 2.
The inner periphery of the damper weight 4 is configured to fit onto the outer periphery of the belt hanging portion 10 with some margin.
１１は前記ベルト掛け部１０に並列的に複数形
成された凹条であり、この凹条１１にベルト１２
内周に突設された凸条１２ａが嵌め合うことによ
り、該ベルト１２が滑り止めされている。 Reference numeral 11 denotes a plurality of grooves formed in parallel on the belt hanging portion 10, and the belt 12 is attached to this groove 11.
The belt 12 is prevented from slipping by fitting the protrusions 12a protruding from the inner circumference.
従つて、上記ハブ２はベルト掛け部１０が一体
形成されたことによつて内燃機関における補器類
を駆動させる駆動用プーリとして兼用されること
になるが、該ハブ２はクランク軸１と一体に回転
するようになつているので回転変動が少なく、回
転変動を嫌う重要な補器類を正確に駆動させるこ
とができる。 Therefore, since the hub 2 is integrally formed with the belt hanging portion 10, it is also used as a driving pulley for driving the accessories in the internal combustion engine, but the hub 2 is integrally formed with the crankshaft 1. Since the rotation is designed to rotate, there is little rotational fluctuation, and important auxiliary equipment that dislikes rotational fluctuation can be accurately driven.
一方、ハブ２の連結部２ｃは、その大径部２ｂ
との接続部２ｄが前記ベルト掛け部１０と、外周
にベルト掛け部４ａを有する第一のダンパウエイ
ト４との間の内周側に位置するように形成されて
いる。 On the other hand, the connecting portion 2c of the hub 2 has a large diameter portion 2b.
A connecting portion 2d is formed to be located on the inner circumferential side between the belt hooking portion 10 and the first damper weight 4 having the belt hooking portion 4a on the outer periphery.
従つてベルト掛け部１０及びベルト掛け部４
ａ、即ち第一のダンパウエイト４の両者にベルト
張力が作用しても、ハブ２の接続部２ｄと各々の
ベルト張力が作用する点との間の距離の合計を最
短とすることができ、接続部２ｄにおけるベルト
張力のモーメントの合計も最小となるのでハブ２
自身の強度の向上が計れる。 Therefore, the belt hanging part 10 and the belt hanging part 4
a, that is, even if belt tension acts on both of the first damper weights 4, the sum of the distances between the connecting portion 2d of the hub 2 and the points on which each belt tension acts can be made the shortest; Since the total moment of belt tension at the connection part 2d is also minimum, the hub 2
You can measure your own strength improvement.
すなわち、両者の間に接続部２ｄを位置させな
い場合は、いずれか一方が必ず遠方に位置するこ
ととなるので、それだけ接続部２ｄにおけるベル
ト張力のモーメントの合計も大きくなり強度の確
保が困難となるものである。 In other words, if the connecting portion 2d is not located between the two, one of them will always be located far away, and the total moment of belt tension at the connecting portion 2d will increase accordingly, making it difficult to ensure strength. It is something.
また、第二のダンパウエイト８をハブ２の大径
部２ｂの内周に嵌着したことによりハブ２の軸線
方向の長さを短縮できることもハブ２自身の強度
の向上につながる。 Further, by fitting the second damper weight 8 to the inner periphery of the large diameter portion 2b of the hub 2, the length of the hub 2 in the axial direction can be shortened, which also leads to an improvement in the strength of the hub 2 itself.
（発明の効果）
本発明は叙上の如く第一及び第二の二つのダン
パウエイトをハブの外周と内周とに夫々弾性体を
介して嵌着したので、ハブにおけるダンパウエイ
トの嵌合長即ち軸線方向の長さを短縮させて、ダ
ンパ装置の小型化を計ることができる。(Effects of the Invention) As described above, the present invention has the first and second damper weights fitted to the outer periphery and inner periphery of the hub through elastic bodies, respectively, so that the fitting length of the damper weights on the hub is That is, by shortening the length in the axial direction, it is possible to downsize the damper device.
さらに、ハブの大径部と連結部との接続部をハ
ブの外周に形成されたベルト掛け部と第一のダン
パウエイトとの間の内周側に位置するように形成
したので、各々のベルト掛け部にベルト張力が作
用した際、前記接続部と各々のベルト張力の作用
する点との間の距離の合計を最短とすることがで
き、接続部におけるベルト張力のモーメントの合
計も最小となり、前述のようにハブの軸線方向の
長さが短縮されたことと相まつてハブ自身の強度
の向上を計ることができる。 Furthermore, since the connecting portion between the large diameter portion of the hub and the connecting portion is formed to be located on the inner peripheral side between the belt hanging portion formed on the outer periphery of the hub and the first damper weight, each belt When belt tension is applied to the hanging portion, the sum of the distances between the connection portion and each point where belt tension acts can be minimized, and the sum of moments of belt tension at the connection portion is also minimized, Coupled with the reduction in the length of the hub in the axial direction as described above, the strength of the hub itself can be improved.
図面は本発明ダンパ装置を示す断面図である。
尚図中、１……クランク軸（回転軸）、２……
ハブ、２ａ……ボス部、２ｂ……大径部、２ｃ…
…連結部、２ｄ……大径部と連結部の接続部、４
……第一のダンパウエイト、５，９……弾性体、
８……第二のダンパウエイト、１０……ハブ外周
のベルト掛け部。
The drawing is a sectional view showing the damper device of the present invention. In the figure, 1... crankshaft (rotating shaft), 2...
Hub, 2a...boss part, 2b...large diameter part, 2c...
...Connection part, 2d...Connection part between large diameter part and connection part, 4
...First damper weight, 5,9...Elastic body,
8...Second damper weight, 10...Belt hanging part on the outer periphery of the hub.
Claims (1)
回転するよう筒状のハブが取付けられ、該ハブの
外周にベルト掛け部を形成すると共に、他のベル
ト掛け部を有する第一のダンパウエイトと、ベル
ト掛け部を有さない第二のダンパウエイトとが前
記ハブに弾性体を介して嵌着された回転軸のダン
パ装置において、 上記ハブを大径部、回転軸への取付けのための
ボス部及びその両者間を連結する連結部にて構成
し、第一のダンパウエイトを大径部の外周部、第
二のダンパウエイトを大径部の内周部に嵌着させ
ると共に、前記ハブの大径部と連結部との接続部
をハブの外周に形成されたベルト掛け部と第一の
ダンパウエイトとの間の内周側に位置するように
形成した回転軸のダンパ装置。[Claims] 1. A cylindrical hub is attached to the end of a rotating shaft that transmits power so as to rotate together with the shaft, and a belt hook is formed on the outer periphery of the hub, and a belt hook is formed on the outer periphery of the hub. A rotary shaft damper device in which a first damper weight having a part and a second damper weight not having a belt hooking part are fitted to the hub via an elastic body, the hub having a large diameter part, Consisting of a boss part for attachment to the rotating shaft and a connecting part connecting the two, the first damper weight is attached to the outer periphery of the large diameter part, and the second damper weight is attached to the inner periphery of the large diameter part. and the connecting portion between the large diameter portion of the hub and the connecting portion is formed to be located on the inner peripheral side between the belt hanging portion formed on the outer periphery of the hub and the first damper weight. Rotating shaft damper device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17474081A JPS5877947A (en) | 1981-10-31 | 1981-10-31 | Damper for rotating shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17474081A JPS5877947A (en) | 1981-10-31 | 1981-10-31 | Damper for rotating shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5877947A JPS5877947A (en) | 1983-05-11 |
| JPH0327780B2 true JPH0327780B2 (en) | 1991-04-17 |
Family
ID=15983839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17474081A Granted JPS5877947A (en) | 1981-10-31 | 1981-10-31 | Damper for rotating shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5877947A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61211552A (en) * | 1985-03-13 | 1986-09-19 | Toyota Motor Corp | Crank damper pulley structure for vehicle |
| JPH0532678Y2 (en) * | 1985-12-06 | 1993-08-20 | ||
| JPH058356Y2 (en) * | 1987-02-13 | 1993-03-02 | ||
| DE4311939C2 (en) * | 1993-04-10 | 1995-08-17 | Freudenberg Carl Fa | Torsional vibration damper |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57200736U (en) * | 1981-06-16 | 1982-12-21 |
-
1981
- 1981-10-31 JP JP17474081A patent/JPS5877947A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5877947A (en) | 1983-05-11 |
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