JP2002227971A - Damper pulley - Google Patents
Damper pulleyInfo
- Publication number
- JP2002227971A JP2002227971A JP2001025725A JP2001025725A JP2002227971A JP 2002227971 A JP2002227971 A JP 2002227971A JP 2001025725 A JP2001025725 A JP 2001025725A JP 2001025725 A JP2001025725 A JP 2001025725A JP 2002227971 A JP2002227971 A JP 2002227971A
- Authority
- JP
- Japan
- Prior art keywords
- hub
- damper pulley
- vibration ring
- vibration
- elastic body
- 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
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
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/36—Pulleys
- F16H2055/366—Pulleys with means providing resilience or vibration damping
Landscapes
- Pulleys (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車のクランク
軸など各種回転系に取付けられてその軸系に発生する振
動を吸収減衰するダンパプーリに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a damper pulley which is attached to various rotating systems such as a crankshaft of an automobile and absorbs and attenuates vibration generated in the shaft system.
【０００２】[0002]
【従来の技術】従来、この種ダンパプーリの一例とし
て、例えば図４に示すように円環形状のハブ１の外周に
振動リング２を同心的に配置し、このハブ１と振動リン
グ２との間に形成される環状空間３内に軸方向からゴム
製の弾性体４を圧入するようにしたダンパプーリが知ら
れている。かかる従来のダンパプーリでは、図５に示す
ように、そのハブ１の外周のほぼ中央に環状の凸条部１
aが形成され、振動リング２の内周には凸条部１aに対向
して環状の凹条部２aが形成されており、この凸条部１a
と凹条部２aの働きによって、弾性体４が軸方向にずれ
たり、また抜け出したりしないよう拘束機能を持たせて
いる。2. Description of the Related Art Conventionally, as an example of this type of damper pulley, a vibration ring 2 is concentrically arranged on the outer periphery of an annular hub 1 as shown in FIG. There is known a damper pulley in which an elastic body 4 made of rubber is press-fitted from an axial direction into an annular space 3 formed in the same. In such a conventional damper pulley, as shown in FIG.
a is formed on the inner periphery of the vibrating ring 2, and an annular concave ridge 2 a is formed facing the convex ridge 1 a.
By the action of the ridges 2a, the elastic body 4 has a restraining function to prevent the elastic body 4 from being displaced in the axial direction or coming off.
【０００３】[0003]
【発明が解決しようとする課題】上記構成のダンパプー
リにおいては、通常の動作状態においては、振動リング
２を慣性質量として機能し、この弾性体４の粘弾性力を
利用してハブ１を装着する回転軸系に生起される振動を
吸収することができる。しかしながら、過大なねじりト
ルクが作用した場合、ハブ１ならびに振動リング２に対
して弾性体４が回転方向に滑ってしまい、かかるねじり
振動の低減機能が損なわれたり、さらには駆動トルクの
伝達機能がなくなるなどの問題があった。In the damper pulley of the above construction, the vibration ring 2 functions as an inertial mass in a normal operation state, and the hub 1 is mounted by utilizing the viscoelastic force of the elastic body 4. Vibration generated in the rotating shaft system can be absorbed. However, when an excessive torsional torque acts, the elastic body 4 slides in the rotational direction with respect to the hub 1 and the vibration ring 2, and the function of reducing such torsional vibration is impaired, and further, the function of transmitting the driving torque is reduced. There were problems such as disappearance.
【０００４】[0004]
【課題を解決するための手段】本発明は、上記課題を解
決するために発明されたもので、請求項１に記載の発明
は、ハブの外周に振動リングを同心的に配置し、このハ
ブと振動リングとの間に形成される環状空間にゴム製の
弾性体を圧入してなるダンパプーリにおいて、前記ハブ
及び前記振動リングの内外周面の一方にその周方向にね
じれた凸条部を形成し、前記ハブ及び前記振動リングの
内外周面の他方に前記凸条部に対向する凹条部を形成し
たことを特徴とする。このような構成を採ることによ
り、本発明においては、過度のトルク変化に対して回転
方向のすべりを確実に防止することができ、ダンパプー
リとしてのねじり振動低減機能を損なうことなく、また
確実にトルクを伝達することができる。DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems. According to the first aspect of the present invention, a vibration ring is concentrically arranged on the outer periphery of a hub. In a damper pulley in which a rubber elastic body is press-fitted into an annular space formed between the vibration ring and the vibration ring, a convex ridge portion that is twisted in the circumferential direction is formed on one of the inner and outer peripheral surfaces of the hub and the vibration ring. A concave ridge portion facing the convex ridge portion is formed on the other of the inner and outer peripheral surfaces of the hub and the vibration ring. By adopting such a configuration, in the present invention, it is possible to reliably prevent the slip in the rotational direction against an excessive torque change, and to surely reduce the torque without impairing the torsional vibration reduction function as the damper pulley. Can be transmitted.
【０００５】[0005]
【発明の実施の形態】以下、本発明の実施例を図面に基
づいて説明する。図１において１０は円環形状のハブ、
１１は振動リングで、前記ハブ１０の外周に振動リング
１１が同心的に配置されている。そしてこのハブ１０と
振動リング１１との間に形成された環状空間１２内に軸
方向からゴム製の弾性体１３が圧入固定されている。前
記ハブ１０の外周面には、図２に示すようにその周方向
にねじれた環状の凸条部１０ａが形成され、また前記振
動リング１１の内周面には図３に示すように前記凸条部
１０ａに対向してねじれた環状の凹条部１１ａが形成さ
れている。なお、１５は、振動リング１１に形成された
伝動ベルトを巻張するプーリ溝である。Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 10 denotes an annular hub.
Reference numeral 11 denotes a vibration ring, and the vibration ring 11 is concentrically arranged on the outer periphery of the hub 10. An elastic body 13 made of rubber is press-fitted and fixed from an axial direction into an annular space 12 formed between the hub 10 and the vibration ring 11. As shown in FIG. 2, an annular convex ridge 10a twisted in the circumferential direction is formed on the outer peripheral surface of the hub 10, and the convex rim 10a is formed on the inner peripheral surface of the vibrating ring 11 as shown in FIG. An annular concave ridge 11a twisted facing the ridge 10a is formed. Reference numeral 15 denotes a pulley groove formed around the vibration ring 11 and around which the transmission belt is wound.
【０００６】かかる構成のダンパプーリによると、通常
の動作状態においては、振動リング１１は慣性質量とし
て機能し、この弾性体１３の粘弾性力を利用してハブ１
０を装着する回転軸系に生起される振動が吸収される。
一方、過大なねじりトルクが作用した場合には、ハブ１
０と、振動リング１１間において相対ねじれ量がより大
きくなり、それによって凸条部１０ａと、凹条部１１ａ
の隙間が小さくなり、その分弾性体１３が圧縮されて径
方向の反発力が増加する傾向となり、その結果ハブ１０
ならびに振動リング１１に対する弾性体１３の接触圧が
増大され、両者間が回転方向に滑りにくくなる。このよ
うに過度のトルク変化に対して、弾性体１３が敏感に応
答するようになり、ダンパプーリとしてのねじり振動低
減機能を損なうことなく、また確実に回転トルクが伝達
される。According to the damper pulley having such a configuration, in a normal operating state, the vibration ring 11 functions as an inertial mass, and the viscoelastic force of the elastic body 13 is used to make the hub 1.
Vibrations generated in the rotating shaft system to which 0 is mounted are absorbed.
On the other hand, when excessive torsion torque is applied, the hub 1
0, the relative amount of torsion between the vibrating rings 11 becomes larger, whereby the convex ridges 10a and the concave ridges 11a
And the elastic body 13 is compressed by that amount, and the repulsive force in the radial direction tends to increase.
In addition, the contact pressure of the elastic body 13 with respect to the vibration ring 11 is increased, so that the elastic ring 13 does not slip easily in the rotation direction. As described above, the elastic body 13 responds to an excessive change in torque, and the rotational torque is reliably transmitted without impairing the torsional vibration reducing function as the damper pulley.
【０００７】以上、本発明のダンパプーリの実施例につ
いて説明したが、本発明は上記実施例になんら限定され
るものではなく、当業者の知識に基づいて種々の変更、
改良を施した形態で実施することができる。例えば、本
実施例ではハブ１０側に凸条部１０ａを形成し、振動リ
ング１１側に凹条部１１ａを形成する例について説明し
たが、本発明はこれに限定されるものではなく、ハブ１
０側に凹条部を形成し、振動リング１１側に凸条部を形
成する構成としてもよい。Although the embodiment of the damper pulley of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications and changes can be made based on the knowledge of those skilled in the art.
It can be implemented in an improved form. For example, in the present embodiment, an example is described in which the protruding ridge portion 10a is formed on the hub 10 side and the concave ridge portion 11a is formed on the vibration ring 11 side. However, the present invention is not limited to this.
A configuration in which a concave ridge is formed on the zero side and a convex ridge is formed on the vibration ring 11 side may be adopted.
【０００８】[0008]
【発明の効果】以上述べたように、本発明では、ハブの
外周に振動リングを同心的に配置し、このハブと振動リ
ングとの間に形成される環状空間にゴム製の弾性体を圧
入してなるダンパプーリにおいて、前記ハブもしくは前
記振動リングの内外周面の一方にその周方向にねじれた
凸条部を形成し、前記ハブもしくは前記振動リングの内
外周面の他方に前記凸条部に対向する凹条部を形成した
ので、過度のトルク変化に対して、弾性体の回転方向の
すべりを確実に防止することができ、ねじり振動低減機
能を損なうことなく、また確実にトルクを伝達できる効
果を有する。As described above, according to the present invention, a vibration ring is concentrically arranged on the outer periphery of a hub, and a rubber elastic body is press-fitted into an annular space formed between the hub and the vibration ring. In the damper pulley thus formed, a ridge portion twisted in the circumferential direction is formed on one of the inner and outer peripheral surfaces of the hub or the vibration ring, and the ridge portion is formed on the other of the inner or outer peripheral surface of the hub or the vibration ring. Since the opposing concave ridges are formed, it is possible to reliably prevent the elastic body from slipping in the rotational direction with respect to excessive torque change, and to transmit torque reliably without impairing the torsional vibration reduction function. Has an effect.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明に係るダンパプーリの一実施例を示す断
面図である。FIG. 1 is a sectional view showing one embodiment of a damper pulley according to the present invention.
【図２】本発明に係るダンパプーリのハブを示す図であ
る。FIG. 2 is a view showing a hub of a damper pulley according to the present invention.
【図３】本発明に係るダンパプーリの振動リングを示す
図である。FIG. 3 is a view showing a vibration ring of a damper pulley according to the present invention.
【図４】従来のダンパプーリの一実施例を示す断面図で
ある。FIG. 4 is a sectional view showing one embodiment of a conventional damper pulley.
【図５】従来のダンパプーリのハブを示す図である。FIG. 5 is a view showing a hub of a conventional damper pulley.
１０ ハブ １０ａ 凸条部 １１ 振動リング １１ａ 凹条部 １２ 環状空間 １３ 弾性体 DESCRIPTION OF SYMBOLS 10 Hub 10a Convex part 11 Vibration ring 11a Concave part 12 Annular space 13 Elastic body
Claims (1)
し、このハブと振動リングとの間に形成される環状空間
にゴム製の弾性体を圧入してなるダンパプーリにおい
て、前記ハブ及び前記振動リングの内外周面の一方にそ
の周方向にねじれた凸条部を形成し、前記ハブ及び前記
振動リングの内外周面の他方に前記凸条部に対向する凹
条部を形成したことを特徴とするダンパプーリ。1. A damper pulley in which a vibration ring is concentrically arranged on the outer periphery of a hub and a rubber elastic body is press-fitted into an annular space formed between the hub and the vibration ring. Forming a ridge that is twisted in the circumferential direction on one of the inner and outer peripheral surfaces of the vibrating ring, and forming a concave ridge facing the convex ridge on the other of the inner and outer peripheral surfaces of the hub and the vibrating ring. Characteristic damper pulley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001025725A JP2002227971A (en) | 2001-02-01 | 2001-02-01 | Damper pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001025725A JP2002227971A (en) | 2001-02-01 | 2001-02-01 | Damper pulley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002227971A true JP2002227971A (en) | 2002-08-14 |
Family
ID=18890660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001025725A Pending JP2002227971A (en) | 2001-02-01 | 2001-02-01 | Damper pulley |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002227971A (en) |
-
2001
- 2001-02-01 JP JP2001025725A patent/JP2002227971A/en active Pending
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