JPH0949548A - Damper - Google Patents
DamperInfo
- Publication number
- JPH0949548A JPH0949548A JP32794895A JP32794895A JPH0949548A JP H0949548 A JPH0949548 A JP H0949548A JP 32794895 A JP32794895 A JP 32794895A JP 32794895 A JP32794895 A JP 32794895A JP H0949548 A JPH0949548 A JP H0949548A
- Authority
- JP
- Japan
- Prior art keywords
- hub
- mass body
- stopper
- damper
- piece
- 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.)
- Granted
Links
Landscapes
- Motor Power Transmission Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ダンパに係り、更
に詳しくは、自動車エンジンのプロペラシャフト等、各
種の回転駆動系に生起される捩り振動を吸収抑制するダ
イナミックダンパに関する。この種のダイナミックダン
パは、ティルガーまたは動的吸振器と別称されることが
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a damper, and more particularly, to a dynamic damper that suppresses and absorbs torsional vibration generated in various rotary drive systems such as a propeller shaft of an automobile engine. This kind of dynamic damper is sometimes referred to as a Tillger or a dynamic vibration reducer.
【０００２】[0002]
【従来の技術】ハブの外周側にゴム状弾性材製の弾性体
を介して質量体（振動リングとも称する）を接続した従
来のダイナミックダンパにおいては、図９のグラフに示
すような質量体の初期アンバランスによって、プロペラ
シャフトが高速で回転すると質量体に振れ回り（芯ず
れ）が発生することがあり、よってこれを原因として、
弾性体が破損する虞がある。2. Description of the Related Art In a conventional dynamic damper in which a mass body (also referred to as a vibrating ring) is connected to an outer peripheral side of a hub via an elastic body made of a rubber-like elastic material, the mass body shown in the graph of FIG. Due to the initial imbalance, when the propeller shaft rotates at high speed, whirling (center misalignment) may occur in the mass body.
The elastic body may be damaged.
【０００３】質量体の振れ回りを抑えるには、質量体が
環状であるのに対して、その内周側に配置されるハブの
軸線方向から見た外周形状を例えば正方形とし、この正
方形の四つの角部をそれぞれ質量体の内周面の直ぐ近く
で対向させて径方向ストッパ部として作用させることが
考えられる。In order to suppress the whirling of the mass body, the mass body has an annular shape, whereas the outer peripheral shape of the hub arranged on the inner peripheral side as viewed from the axial direction is, for example, a square, and the square shape is divided into four parts. It is conceivable that the three corners are made to face each other in the immediate vicinity of the inner peripheral surface of the mass body to act as the radial direction stopper portions.
【０００４】しかしながら、このような方法には、弾性
体を加硫成形するための加硫型の強度の都合から、スト
ッパ部と質量体との径方向間隙の大きさを其程小さくす
ることができない事情があり（約３ｍｍが限度）、よっ
てこの間隙の分だけは質量体の振れ回りを許容しなけれ
ばならない問題がある。However, in such a method, the size of the radial gap between the stopper portion and the mass body can be made so small because of the strength of the vulcanization mold for vulcanizing and molding the elastic body. There is a situation in which it cannot be done (about 3 mm is a limit), and therefore, there is a problem that whirling of the mass body must be allowed only for this gap.
【０００５】また図１０に示すように、ハブ２１の外周
面および質量体２２の内周面にそれぞれ互いに対向する
ゴム状弾性材製の台座２３，２４を設け、この台座２
３，２４の間に略円柱形のストッパ部材２５を介装して
質量体２２の振れ回りを抑えることも考えられるが（実
開平６−１４５８５号公報参照）、この方法によると、
弾性体２６および台座２３，２４を加硫成形するための
加硫型のキャビティ形状が複雑になるために、コスト的
に不利である問題がある。As shown in FIG. 10, pedestals 23 and 24 made of rubber-like elastic material are provided on the outer peripheral surface of the hub 21 and the inner peripheral surface of the mass body 22 so as to face each other.
It is also possible to suppress the whirling of the mass body 22 by interposing a substantially cylindrical stopper member 25 between 3 and 24 (see Japanese Utility Model Laid-Open No. 6-14585), but according to this method,
Since the cavity shape of the vulcanization mold for vulcanizing and molding the elastic body 26 and the pedestals 23, 24 becomes complicated, there is a problem in that it is disadvantageous in terms of cost.
【０００６】[0006]
【発明が解決しようとする課題】本発明は以上の点に鑑
み、前者の、ハブにストッパ部を設ける方式の振れ回り
防止対策を備えたダンパにおいて、ストッパ部と質量体
との間に形成される径方向間隙を従来より小さくするこ
とが可能な構造を提供することを目的とする。In view of the above points, the present invention provides a former damper having a whirling prevention measure of providing a stopper portion on a hub, which is formed between the stopper portion and the mass body. It is an object of the present invention to provide a structure capable of reducing the radial gap between the two.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するた
め、本発明の請求項１によるダンパは、ハブと質量体と
の径方向変位を制限するために径方向外方に向けて所要
数のストッパ部を設けたハブと、前記ハブの外周側にゴ
ム状弾性材製の弾性体を介して接続された質量体と、を
備え、前記ストッパ部と前記質量体との径方向間隙を小
さくするために前記間隙に挿入片を挿入することにし
た。In order to achieve the above object, a damper according to claim 1 of the present invention has a required number of radial outwards in order to limit radial displacement between the hub and the mass. A hub provided with a stopper portion and a mass body connected to the outer peripheral side of the hub via an elastic body made of a rubber-like elastic material are provided, and a radial gap between the stopper portion and the mass body is reduced. Therefore, it was decided to insert the insert piece into the gap.
【０００８】また本発明の請求項２によるダンパは、請
求項１のダンパにおいて、挿入片が、質量体またはハブ
に対して後付けされる取付部に一体成形されていること
にした。According to a second aspect of the present invention, in the damper according to the first aspect, the insert piece is integrally formed with a mounting portion to be attached to the mass body or the hub later.
【０００９】また本発明の請求項３によるダンパは、請
求項１のダンパにおいて、挿入片が、ハブまたは質量体
に対して後付けされる断面略コ字形のストッパ部材の一
片として設けられていることにした。According to a third aspect of the present invention, in the damper according to the first aspect, the insert piece is provided as a piece of a stopper member having a substantially U-shaped cross section, which is attached to the hub or the mass body later. I chose
【００１０】[0010]
【作用】上記構成を備えた本発明の請求項１によるダン
パのように、ハブに設けられたストッパ部と質量体との
間の径方向間隙に挿入片が挿入されていると、この挿入
片の厚さの分だけ、径方向間隙の大きさを爾後的に小さ
くすることが可能となる。When the insert piece is inserted into the radial gap between the stopper portion provided on the hub and the mass body as in the damper according to claim 1 of the present invention having the above-mentioned structure, the insert piece is inserted. It is possible to subsequently reduce the size of the radial gap by an amount corresponding to the thickness.
【００１１】また上記構成を備えた本発明の請求項２に
よるダンパのように、挿入片が質量体またはハブに対し
て後付けされる取付部に一体成形されていると、既存の
ダンパに取付部を取り付けることによって、この既存の
ダンパに、本発明による効果を付与することが可能とな
る。Further, when the insert piece is integrally formed with the mounting portion to be attached to the mass body or the hub like the damper according to the second aspect of the present invention having the above-mentioned structure, the mounting portion is attached to the existing damper. The effect of the present invention can be added to this existing damper by attaching the.
【００１２】また上記構成を備えた本発明の請求項３に
よるダンパのように、挿入片がハブまたは質量体に対し
て後付けされる断面略コ字形のストッパ部材の一片とし
て設けられていると、既存のダンパにストッパ部材を取
り付けることによって、この既存のダンパに、本発明に
よる効果を付与することが可能となる。Further, as in the damper according to claim 3 of the present invention having the above-mentioned structure, when the insert piece is provided as one piece of the stopper member having a substantially U-shaped cross section, which is attached to the hub or the mass body later, By attaching the stopper member to the existing damper, the effect of the present invention can be added to the existing damper.
【００１３】[0013]
【発明の実施の形態】本願の請求項２に係る発明は、以
下の実施の形態を備えている。 第一例・・・挿入片が、質量体に対して後付けされる取
付部に一体成形されている。取付部は、例えば、質量体
の外周側に嵌着される環状の取付部として形成され、こ
の取付部にストッパ部と同数の挿入片が一体成形され
る。 第二例・・・挿入片が、ハブに対して後付けされる取付
部に一体成形されている。取付部は、例えば、ハブの筒
状部の内周側に嵌着される筒状部と相似形の筒状の取付
部として形成され、この取付部にストッパ部と同数の挿
入片が一体成形される。BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 2 of the present application has the following embodiment. First example: The insert piece is integrally formed with a mounting portion to be attached to the mass body later. The mounting portion is formed, for example, as an annular mounting portion that is fitted on the outer peripheral side of the mass body, and the same number of insert pieces as the stopper portion are integrally molded with this mounting portion. Second example: The insert piece is integrally formed with a mounting portion to be attached to the hub later. The mounting portion is formed as, for example, a cylindrical mounting portion that is similar in shape to the cylindrical portion that is fitted on the inner peripheral side of the cylindrical portion of the hub, and the same number of insert pieces as the stopper portion are integrally molded with this mounting portion. To be done.
【００１４】また本願の請求項３に係る発明は、以下の
実施の形態を備えている。 第一例・・・挿入片が、ハブに対して後付けされる断面
略コ字形のストッパ部材の一片として設けられている。
ストッパ部材は、ストッパ部と同数が装着される。 第二例・・・挿入片が、質量体に対して後付けされる断
面略コ字形のストッパ部材の一片として設けられてい
る。ストッパ部材は、ストッパ部と同数が装着される。The invention according to claim 3 of the present application has the following embodiment. First example ... The insertion piece is provided as one piece of a stopper member having a substantially U-shaped cross section that is attached to the hub later.
The same number of stopper members as the stopper portions are mounted. Second example: The insertion piece is provided as one piece of a stopper member having a substantially U-shaped cross section, which is attached to the mass body later. The same number of stopper members as the stopper portions are mounted.
【００１５】尚、この請求項３に係る発明において、コ
の字の上下二片は、後記する第二実施例がそうであるよ
うに、軸方向長さが互いに異なっていても良く、またコ
の字の角部は丸められていても良い。In the invention according to claim 3, the upper and lower U-shaped pieces may have axial lengths different from each other, as in the second embodiment described later. The corners of the character may be rounded.
【００１６】[0016]
【実施例】つぎに本発明の実施例を図面にしたがって説
明する。Next, an embodiment of the present invention will be described with reference to the drawings.
【００１７】第一実施例・・・図１ないし図３に示すよ
うに、当該実施例に係るダイナミックダンパは、先ず、
板金等の金属によって成形されたハブ１を備えており、
このハブ１が、平板部１ａおよび筒状部１ｂを一体に備
えていて半裁断面略Ｌ字形に成形され、またその軸線方
向から見た外周形状が多角形の一つである正方形に成形
されていて、この正方形の四つの角部がそれぞれ、径方
向外方を向いたストッパ部１ｃとされている。ストッパ
部１ｃ、すなわち正方形の四つの角部にはそれぞれ、所
定の大きさ（曲率）の丸み（アール）が付けられてい
る。平板部１ａの中央に軸孔１ｄが設けられ、また所要
数の小孔１ｅ，１ｆが等配状（小孔１ｅは四等配、小孔
１ｆは二等配）に設けられている。First Embodiment: As shown in FIGS. 1 to 3, a dynamic damper according to the first embodiment is
It is equipped with a hub 1 formed of metal such as sheet metal,
The hub 1 is integrally formed with a flat plate portion 1a and a cylindrical portion 1b and is formed into a semi-cut cross-section having a substantially L-shape, and the outer peripheral shape when viewed from the axial direction is formed into a square which is one of polygons. The four corners of this square are stopper portions 1c facing outward in the radial direction. The stopper portion 1c, that is, the four corner portions of the square are each provided with a roundness (R) having a predetermined size (curvature). A shaft hole 1d is provided in the center of the flat plate portion 1a, and a required number of small holes 1e and 1f are provided in a uniform arrangement (small holes 1e are equally distributed and small holes 1f are equally distributed).
【００１８】ハブ１の外周側に、ゴム状弾性材製の弾性
体２を介して質量体（振動リングとも称する）３が同心
的に接続されている。質量体３は鋳鉄等の金属によって
環状に成形されている。A mass body (also referred to as a vibrating ring) 3 is concentrically connected to the outer peripheral side of the hub 1 via an elastic body 2 made of a rubber-like elastic material. The mass body 3 is formed in a ring shape by a metal such as cast iron.
【００１９】弾性体２は、所定のゴムによって加硫成形
されるとともに加硫成形と同時にハブ１の外周面および
質量体３の内周面にそれぞれ加硫接着されている。この
弾性体２はハブ１の外周形状である正方形に合わせて四
等配されており、それぞれがハブ１の正方形の各辺の中
央に接着されている。ハブ１の外周面および質量体３の
内周面にそれぞれ、全面に亙ってゴム状弾性材製の薄膜
４，５が被着されており、この薄膜４，５は、弾性体２
と同種のゴムをもって同時にかつ一体に成形されてい
る。この薄膜４，５は、金属同士の衝接ないし摺動を防
止し、かつハブ１の外周面または質量体３の内周面を保
護するためのものである。また質量体３の内周面に、ハ
ブ１の各ストッパ部１ｃを捩り方向の両側から挾むよう
にして、ゴム状弾性材製の捩りストッパ６，７が設けら
れており、このストッパ６，７は、弾性体２および薄膜
４，５と同種のゴムをもって同時にかつ一体に成形され
ている。この捩りストッパ６，７は、ハブ１と質量体３
との捩り方向の変位量を所定量までに規制するために設
けられている。The elastic body 2 is vulcanized and molded by a predetermined rubber and simultaneously vulcanized and bonded to the outer peripheral surface of the hub 1 and the inner peripheral surface of the mass body 3 by vulcanization. The elastic bodies 2 are arranged in four equal parts in conformity with the square of the outer peripheral shape of the hub 1, and each is bonded to the center of each side of the square of the hub 1. Thin films 4 and 5 made of a rubber-like elastic material are coated over the entire outer peripheral surface of the hub 1 and the inner peripheral surface of the mass body 3, respectively.
It is molded simultaneously and integrally with the same type of rubber. The thin films 4 and 5 are for preventing collision or sliding between metals and protecting the outer peripheral surface of the hub 1 or the inner peripheral surface of the mass body 3. Further, torsion stoppers 6 and 7 made of rubber-like elastic material are provided on the inner peripheral surface of the mass body 3 so as to sandwich the stopper portions 1c of the hub 1 from both sides in the torsion direction. The elastic body 2 and the thin films 4 and 5 are simultaneously and integrally molded with the same kind of rubber. The twist stoppers 6 and 7 are for the hub 1 and the mass body 3.
It is provided in order to regulate the amount of displacement in the twisting direction between and to a predetermined amount.
【００２０】質量体３に、ストッパ部材８が取り付けら
れている。このストッパ部材８は板金等の金属、樹脂ま
たは硬質ゴム等によって全体として環状に成形されてお
り、質量体３の外周側に嵌着された環状の取付部８ａ
と、この取付部８ａに連結部８ｂを介して一体に設けら
れ、ハブ１の各ストッパ部１ｃと質量体３との間の径方
向間隙９（薄膜４，５の間の径方向間隙、その大きさが
ｔ1 で示されている）を小さくするために、この間隙９
に軸方向一方から挿入された挿入片８ｃとを備えてお
り、連結部８ｂおよび対向部８ｃが、ストッパ部１ｃの
配置に合わせて四等配で設けられている。連結部８ｂは
質量体３の軸方向一端面に接するように平板状に成形さ
れている。挿入片８ｃは薄膜５を介して質量体３の内周
面に接するように、湾曲した平板状に成形されている。
図３に示したように、取付部８ａ、連結部８ｂおよび挿
入片８ｃの断面をとると略コ字形であり、よってこの部
分に限って言えば、これらの内側に質量体３が抱持され
ている。A stopper member 8 is attached to the mass body 3. The stopper member 8 is formed in a ring shape as a whole by a metal such as a metal plate, a resin, a hard rubber, or the like, and has an annular mounting portion 8a fitted to the outer peripheral side of the mass body 3.
And a radial gap 9 (a radial gap between the thin films 4 and 5) between each stopper portion 1c of the hub 1 and the mass body 3, which is integrally provided on the mounting portion 8a via a connecting portion 8b. This gap 9 in order to reduce the size (denoted by t 1 ).
And an insertion piece 8c inserted from one side in the axial direction, the connecting portion 8b and the facing portion 8c are provided in four equal parts according to the arrangement of the stopper portion 1c. The connecting portion 8b is formed in a flat plate shape so as to be in contact with one end surface of the mass body 3 in the axial direction. The insertion piece 8c is formed in a curved flat plate shape so as to contact the inner peripheral surface of the mass body 3 via the thin film 5.
As shown in FIG. 3, the mounting portion 8a, the connecting portion 8b, and the insertion piece 8c have a substantially U-shaped cross section. Therefore, as far as this portion is concerned, the mass body 3 is held inside them. ing.
【００２１】上記構成を備えたダイナミックダンパにお
いては、ハブ１に設けられたストッパ部１ｃと質量体３
との間の径方向間隙９にそれぞれ、ストッパ部材８の挿
入片８ａが挿入されているために、この挿入片８ｃの厚
さｔ2 の分だけ、径方向間隙９の大きさ（ｔ3 ＝ｔ1 −
ｔ2 ）が爾後的に小さくなっている。したがってこれに
より質量体３の振れ回りを従来より更に小さく抑えるこ
とができ、よって弾性体３が破損しにくい、耐久性に優
れたダイナミックダンパを提供することができる。また
挿入片８ｃを一体成形した取付部８ａが環状に成形され
ていて、既存のダンパに対してストッパ部材８を後付け
することが可能であるために、既存のダンパの径方向間
隙９を小さくすることができ、よって既存のダンパの耐
久性を向上させることができる。また挿入片８ｃの厚さ
ｔ2 を変更することによって径方向間隙９の大きさｔ3
を簡単に調整することができる効果があり、部品点数の
増加が最小限に抑えられる効果がある。In the dynamic damper having the above structure, the stopper portion 1c provided on the hub 1 and the mass body 3 are provided.
Since the insertion pieces 8a of the stopper member 8 are inserted into the radial gaps 9 between the radial gaps 9 and, the size of the radial gap 9 (t 3 = t 3 = the thickness t 2 of the insertion pieces 8c). t 1 −
t 2 ) becomes smaller thereafter. Therefore, the whirling of the mass body 3 can be suppressed to be smaller than in the conventional case, and thus the elastic body 3 is less likely to be damaged, and a dynamic damper excellent in durability can be provided. Further, since the mounting portion 8a integrally formed with the insertion piece 8c is formed in an annular shape and the stopper member 8 can be retrofitted to the existing damper, the radial gap 9 of the existing damper is reduced. Therefore, the durability of the existing damper can be improved. By changing the thickness t 2 of the insertion piece 8c, the size t 3 of the radial gap 9 can be changed.
Can be easily adjusted, and an increase in the number of parts can be suppressed to a minimum.
【００２２】また図示はしないが、ストッパ部材８の各
挿入片８ｃのハブ１側の面にテフロン等の摺動材をコー
ティングすると、摺動抵抗が小さくなるために、捩り方
向の質量体３の動きが阻害されずに済む。Although not shown, when a sliding material such as Teflon is coated on the surface of each insertion piece 8c of the stopper member 8 on the hub 1 side, sliding resistance is reduced, so that the mass body 3 in the twisting direction is reduced. The movement is not obstructed.
【００２３】第二実施例・・・図４ないし図６に示すよ
うに、当該実施例に係るダイナミックダンパは、先ず、
板金等の金属によって成形されたハブ１を備えており、
このハブ１が、平板部１ａおよび筒状部１ｂを一体に備
えていて半裁断面略Ｌ字形に成形され、またその軸線方
向から見た外周形状が多角形の一つである正方形に成形
されていて、この正方形の四つの角部がそれぞれ、径方
向外方を向いたストッパ部１ｃとされている。ストッパ
部１ｃ、すなわち正方形の四つの角部にはそれぞれ、所
定の大きさ（曲率）の丸み（アール）が付けられてい
る。平板部１ａの中央に軸孔１ｄが設けられ、また所要
数の小孔１ｅ，１ｆが等配状（小孔１ｅは四等配、小孔
１ｆは二等配）に設けられている。Second Embodiment As shown in FIGS. 4 to 6, the dynamic damper according to the second embodiment is
It is equipped with a hub 1 formed of metal such as sheet metal,
The hub 1 is integrally formed with a flat plate portion 1a and a cylindrical portion 1b and is formed into a semi-cut cross-section having a substantially L-shape, and the outer peripheral shape when viewed from the axial direction is formed into a square which is one of polygons. The four corners of this square are stopper portions 1c facing outward in the radial direction. The stopper portion 1c, that is, the four corner portions of the square are each provided with a roundness (R) having a predetermined size (curvature). A shaft hole 1d is provided in the center of the flat plate portion 1a, and a required number of small holes 1e and 1f are provided in a uniform arrangement (small holes 1e are equally distributed and small holes 1f are equally distributed).
【００２４】ハブ１の外周側に、ゴム状弾性材製の弾性
体２を介して質量体（振動リングとも称する）３が同心
的に接続されている。質量体３は鋳鉄等の金属によって
環状に成形されている。A mass body (also referred to as a vibrating ring) 3 is concentrically connected to the outer peripheral side of the hub 1 via an elastic body 2 made of a rubber-like elastic material. The mass body 3 is formed in a ring shape by a metal such as cast iron.
【００２５】弾性体２は、所定のゴムによって加硫成形
されるとともに加硫成形と同時にハブ１の外周面および
質量体３の内周面にそれぞれ加硫接着されている。この
弾性体２はハブ１の外周形状である正方形に合わせて四
等配されており、それぞれがハブ１の正方形の各辺の中
央に接着されている。ハブ１の外周面および質量体３の
内周面にそれぞれ、全面に亙ってゴム状弾性材製の薄膜
４，５が被着されており、この薄膜４，５は、弾性体２
と同種のゴムをもって同時にかつ一体に成形されてい
る。この薄膜４，５は、金属同士の衝接ないし摺動を防
止し、かつハブ１の外周面または質量体３の内周面を保
護するためのものである。The elastic body 2 is vulcanized and molded by a predetermined rubber, and at the same time as the vulcanization and molding, it is vulcanized and adhered to the outer peripheral surface of the hub 1 and the inner peripheral surface of the mass body 3, respectively. The elastic bodies 2 are arranged in four equal parts in conformity with the square of the outer peripheral shape of the hub 1, and each is bonded to the center of each side of the square of the hub 1. Thin films 4 and 5 made of a rubber-like elastic material are coated over the entire outer peripheral surface of the hub 1 and the inner peripheral surface of the mass body 3, respectively.
It is molded simultaneously and integrally with the same type of rubber. The thin films 4 and 5 are for preventing collision or sliding between metals and protecting the outer peripheral surface of the hub 1 or the inner peripheral surface of the mass body 3.
【００２６】ハブ１の筒状部１ｂに設けられた四つのス
トッパ部１ｃにそれぞれ、ストッパ部材１０が一つずつ
取り付けられている。このストッパ部材８はそれぞれ板
金等の金属、樹脂または硬質ゴム等によって軸線方向か
ら見て略９０度の円弧形に成形され、かつ軸線と平行な
断面形状を略コ字形に成形されている。コの字の上下二
片１０ａ，１０ｂは、その軸方向長さが互いにかなり異
なるように設定されている。円弧の曲率およびコの字の
上下二片１０ａ，１０ｂの間隔はそれぞれストッパ部１
ｃに合わせて設定されており、よってこのストッパ部材
１０は、コの字の上下二片１０ａ，１０ｂでストッパ部
１ｃを挾むようにして、ストッパ部１ｃに軸方向一方か
ら嵌着されており、二片１０ａ，１０ｂのうちの一片１
０ａが各ストッパ部１ｃと質量体３との間の径方向間隙
９（薄膜４，５の間の径方向間隙、その大きさがｔ1 で
示されている）を小さくするために、この間隙９に挿入
されて、挿入片１０ｃとされている。またこの挿入片１
０ｃの先端部には、挿入後に折り曲げられるカシメ固定
用の爪部１０ｄが一体成形されている。One stopper member 10 is attached to each of the four stopper portions 1c provided on the tubular portion 1b of the hub 1. Each of the stopper members 8 is formed of a metal such as a metal plate, a resin, a hard rubber, or the like into an arc shape of about 90 degrees when viewed from the axial direction, and is formed into a substantially U-shaped cross section parallel to the axis line. The U-shaped upper and lower two pieces 10a and 10b are set so that their axial lengths are considerably different from each other. The curvature of the circular arc and the space between the upper and lower two U-shaped pieces 10a and 10b are the stopper portion 1 respectively.
Therefore, the stopper member 10 is fitted to the stopper portion 1c from one side in the axial direction so that the stopper portion 1c is sandwiched by the upper and lower two pieces 10a and 10b having a U-shape. One piece 10a, 10b
0a reduces the radial gap 9 between each stopper portion 1c and the mass body 3 (the radial gap between the thin films 4 and 5, the size of which is indicated by t 1 ). 9 is inserted to form an insertion piece 10c. Also this insert piece 1
A claw portion 10d for crimping fixation, which is bent after insertion, is integrally formed at the tip of 0c.
【００２７】上記構成を備えたダイナミックダンパにお
いては、ハブ１に設けられたストッパ部１ｃと質量体３
との間の径方向間隙９にそれぞれ、断面略コ字形を呈す
るストッパ部材１０の挿入片１０ｃが挿入されているた
めに、この挿入片１０ｃの厚さｔ2 の分だけ、径方向間
隙９の大きさ（ｔ3 ＝ｔ1 −ｔ2 ）が爾後的に小さくな
っている。したがってこれにより質量体３の振れ回りを
従来より更に小さく抑えることができ、よって弾性体３
が破損しにくい、耐久性に優れたダイナミックダンパを
提供することができる。また挿入片１０ｃを一部に設け
たストッパ部材１０が断面略コ字形に成形されていて、
既存のダンパに対してこのストッパ部材１０を後付けす
ることが可能であるために、既存のダンパの径方向間隙
９を小さくすることができ、よって既存のダンパの耐久
性を向上させることができる。また挿入片１０ｃの厚さ
ｔ2 を変更することによって、径方向間隙９の大きさｔ
3を簡単に調整することができる効果がある。In the dynamic damper having the above structure, the stopper portion 1c provided on the hub 1 and the mass body 3 are provided.
Since the insertion pieces 10c of the stopper member 10 having a substantially U-shaped cross section are inserted into the respective radial gaps 9 between and, the radial gaps 9 corresponding to the thickness t 2 of the insertion pieces 10c. The size (t 3 = t 1 −t 2 ) becomes smaller thereafter. Therefore, the whirling of the mass body 3 can be suppressed to be smaller than the conventional one, and thus the elastic body 3
It is possible to provide a dynamic damper that is not easily damaged and has excellent durability. Further, the stopper member 10 provided with a part of the insertion piece 10c is formed in a substantially U-shaped cross section,
Since the stopper member 10 can be retrofitted to the existing damper, the radial gap 9 of the existing damper can be reduced, and thus the durability of the existing damper can be improved. Further, by changing the thickness t 2 of the insertion piece 10c, the size t of the radial gap 9 can be changed.
There is the effect that 3 can be easily adjusted.
【００２８】軸線方向から見て略９０度の円弧形に成形
されたストッパ部材１０は、図７および図８に示すよう
に、これを筒状に成形して四つ割りにすることによっ
て、ダンパ一つ分の四つのストッパ部材１０を纏めて成
形することが可能である。したがってその製造が簡単で
ある効果があり、またこの場合には、コスト的にも有利
である。尚、このことは、ハブ１の軸線方向から見た外
周形状が正方形以外の多角形（三角形、五角形また六角
形等）である場合も同じである（角部の数と同数に筒を
分割する）。The stopper member 10 formed in an arc shape of approximately 90 degrees when viewed from the axial direction is formed into a cylindrical shape by dividing it into four as shown in FIGS. 7 and 8. It is possible to collectively form the four stopper members 10 for one damper. Therefore, there is an effect that the manufacturing is simple, and in this case, it is also advantageous in terms of cost. This is the same when the outer peripheral shape of the hub 1 viewed from the axial direction is a polygon other than a square (triangle, pentagon, hexagon, etc.) (the cylinder is divided into the same number as the number of corners). ).
【００２９】また図示はしないが、ストッパ部材１０の
各挿入片１０ｃの質量体３側の面にテフロン等の摺動材
をコーティングすると、摺動抵抗が小さくなるために、
捩り方向の質量体３の動きが阻害されずに済む。Although not shown in the drawings, when a sliding material such as Teflon is coated on the surface of each insertion piece 10c of the stopper member 10 on the side of the mass body 3, sliding resistance is reduced,
The movement of the mass body 3 in the torsion direction is not obstructed.
【００３０】[0030]
【発明の効果】本発明は、以下の効果を奏する。The present invention has the following effects.
【００３１】すなわち、先ず、上記構成を備えた本発明
の請求項１によるダンパにおいては、ハブに設けられた
ストッパ部と質量体との間の径方向間隙に挿入片が挿入
されているために、この挿入片の厚さの分だけ、径方向
間隙の大きさが爾後的に小さくなっている。したがって
これにより質量体の振れ回りを従来より更に小さく抑え
ることができ、よって弾性体が破損しにくい、耐久性に
優れたダンパを提供することができる。That is, first, in the damper according to the first aspect of the present invention having the above-mentioned structure, the insertion piece is inserted into the radial gap between the stopper portion provided on the hub and the mass body. The size of the radial gap is subsequently reduced by the thickness of the insert piece. Therefore, the whirling of the mass body can be suppressed to be smaller than in the conventional case, so that the elastic body is less likely to be damaged and a damper having excellent durability can be provided.
【００３２】また上記構成を備えた本発明の請求項２に
よるダンパにおいては、挿入片が質量体またはハブに対
して後付けされる取付部に一体成形されているために、
既存のダンパに取付部を取り付けることによって、この
既存のダンパに対して本発明による効果を付与すること
ができる。すなわち、既存のダンパの径方向間隙を小さ
くすることができ、よって既存のダンパの耐久性を向上
させることができる。Further, in the damper according to claim 2 of the present invention having the above-mentioned structure, since the insert piece is formed integrally with the mounting portion to be attached to the mass body or the hub later,
By attaching the attachment portion to the existing damper, the effect of the present invention can be added to the existing damper. That is, the radial gap of the existing damper can be reduced, and thus the durability of the existing damper can be improved.
【００３３】また上記構成を備えた本発明の請求項３に
よるダンパにおいては、挿入片がハブまたは質量体に対
して後付けされる断面略コ字形のストッパ部材の一片と
して設けられているために、既存のダンパにストッパ部
材を取り付けることによって、この既存のダンパに対し
て本発明による効果を付与することができる。すなわ
ち、既存のダンパの径方向間隙を小さくすることがで
き、よって既存のダンパの耐久性を向上させることがで
きる。Further, in the damper according to claim 3 of the present invention having the above structure, since the insertion piece is provided as one piece of the stopper member having a substantially U-shaped cross section, which is attached to the hub or the mass body later, By attaching the stopper member to the existing damper, the effect of the present invention can be added to the existing damper. That is, the radial gap of the existing damper can be reduced, and thus the durability of the existing damper can be improved.
【図１】本発明の第一実施例に係るダンパの半裁正面図1 is a half-cut front view of a damper according to a first embodiment of the present invention.
【図２】図１におけるＡ−Ａ線拡大断面図FIG. 2 is an enlarged sectional view taken along line AA in FIG.
【図３】図１におけるＢ−Ｂ線拡大断面図FIG. 3 is an enlarged sectional view taken along line BB in FIG.
【図４】本発明の第二実施例に係るダンパの半裁正面図FIG. 4 is a half-cut front view of a damper according to a second embodiment of the present invention.
【図５】図４におけるＣ−Ｃ線拡大断面図5 is an enlarged cross-sectional view taken along the line CC in FIG.
【図６】図４におけるＤ−Ｄ線拡大断面図6 is an enlarged cross-sectional view taken along the line DD in FIG.
【図７】ストッパ部材の製造方法を示す正面図FIG. 7 is a front view showing a method for manufacturing a stopper member.
【図８】図７におけるＥ−Ｅ線断面図8 is a sectional view taken along line EE in FIG.
【図９】プロペラシャフト回転数とアンバランス量の関
係を示すグラフ図FIG. 9 is a graph showing a relationship between a propeller shaft rotation speed and an unbalance amount.
【図１０】従来例に係るダンパの一部切欠した半裁正面
図FIG. 10 is a partially cutaway front view of a damper according to a conventional example.
１ ハブ １ａ 平板部 １ｂ 筒状部 １ｃ ストッパ部 １ｄ 軸孔 １ｅ，１ｆ 小孔 ２ 弾性体 ３ 質量体 ４，５ 薄膜 ６，７ 捩りストッパ ８，１０ ストッパ部材 ８ａ 取付部 ８ｂ 連結部 ８ｃ，１０ｃ 挿入片 ９ 径方向間隙 １０ａ，１０ｂ 一片 １０ｄ 爪部 1 hub 1a flat plate portion 1b tubular portion 1c stopper portion 1d shaft hole 1e, 1f small hole 2 elastic body 3 mass body 4,5 thin film 6,7 twisting stopper 8,10 stopper member 8a mounting portion 8b connecting portion 8c, 10c insertion Piece 9 Radial gap 10a, 10b One piece 10d Claw
Claims (3)
位を制限するために径方向外方に向けて所要数のストッ
パ部（１ｃ）を設けたハブ（１）と、前記ハブ（１）の
外周側にゴム状弾性材製の弾性体（２）を介して接続さ
れた質量体（３）と、を備え、 前記ストッパ部（１ｃ）と前記質量体（３）との径方向
間隙（９）を小さくするために前記間隙（９）に挿入片
（８ｃ）（１０ｃ）を挿入したことを特徴とするダン
パ。1. A hub (1) provided with a required number of stopper portions (1c) outward in the radial direction to limit radial displacement between the hub (1) and the mass body (3), A mass body (3) connected to the outer peripheral side of the hub (1) via an elastic body (2) made of a rubber-like elastic material, and comprising the stopper portion (1c) and the mass body (3). A damper characterized in that insertion pieces (8c) and (10c) are inserted into the gap (9) in order to reduce the radial gap (9).
ｃ）が、質量体（３）またはハブ（１）に対して後付け
される取付部（８ａ）に一体成形されていることを特徴
とするダンパ。2. The damper according to claim 1, wherein the insertion piece (8
The damper is characterized in that c) is integrally molded with a mounting portion (8a) that is retrofitted to the mass body (3) or the hub (1).
０ｃ）が、ハブ（１）または質量体（３）に対して後付
けされる断面略コ字形のストッパ部材（１０）の一片と
して設けられていることを特徴とするダンパ。3. The damper according to claim 1, wherein the insertion piece (1
0c) is provided as one piece of a stopper member (10) having a substantially U-shaped cross section which is attached to the hub (1) or the mass body (3) later.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32794895A JP3649255B2 (en) | 1995-05-26 | 1995-11-24 | damper |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15119095 | 1995-05-26 | ||
| JP7-151190 | 1995-05-26 | ||
| JP32794895A JP3649255B2 (en) | 1995-05-26 | 1995-11-24 | damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0949548A true JPH0949548A (en) | 1997-02-18 |
| JP3649255B2 JP3649255B2 (en) | 2005-05-18 |
Family
ID=26480507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32794895A Expired - Fee Related JP3649255B2 (en) | 1995-05-26 | 1995-11-24 | damper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3649255B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006176099A (en) * | 2004-11-29 | 2006-07-06 | Nissan Motor Co Ltd | Steering bush and its manufacturing method |
| JP2007139041A (en) * | 2005-11-17 | 2007-06-07 | Hokushin Ind Inc | Dynamic damper |
| CN104329409A (en) * | 2014-09-29 | 2015-02-04 | 上汽通用五菱汽车股份有限公司 | Torsional vibration damper for vehicle driving system |
| JP2015086907A (en) * | 2013-10-29 | 2015-05-07 | Nok株式会社 | Dynamic damper |
| JP2015209884A (en) * | 2014-04-25 | 2015-11-24 | Nok株式会社 | Dynamic damper |
| JP2016098962A (en) * | 2014-11-25 | 2016-05-30 | アイシン精機株式会社 | Damper device |
| JP2020101238A (en) * | 2018-12-21 | 2020-07-02 | トヨタ自動車株式会社 | Vehicular dynamic damper |
| JP2020118223A (en) * | 2019-01-23 | 2020-08-06 | Nok株式会社 | Dynamic vibration absorber |
-
1995
- 1995-11-24 JP JP32794895A patent/JP3649255B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006176099A (en) * | 2004-11-29 | 2006-07-06 | Nissan Motor Co Ltd | Steering bush and its manufacturing method |
| JP2007139041A (en) * | 2005-11-17 | 2007-06-07 | Hokushin Ind Inc | Dynamic damper |
| JP2015086907A (en) * | 2013-10-29 | 2015-05-07 | Nok株式会社 | Dynamic damper |
| JP2015209884A (en) * | 2014-04-25 | 2015-11-24 | Nok株式会社 | Dynamic damper |
| CN104329409A (en) * | 2014-09-29 | 2015-02-04 | 上汽通用五菱汽车股份有限公司 | Torsional vibration damper for vehicle driving system |
| JP2016098962A (en) * | 2014-11-25 | 2016-05-30 | アイシン精機株式会社 | Damper device |
| JP2020101238A (en) * | 2018-12-21 | 2020-07-02 | トヨタ自動車株式会社 | Vehicular dynamic damper |
| JP2020118223A (en) * | 2019-01-23 | 2020-08-06 | Nok株式会社 | Dynamic vibration absorber |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3649255B2 (en) | 2005-05-18 |
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