JP2001012548A - Vibration damping device and its manufacture - Google Patents
Vibration damping device and its manufactureInfo
- Publication number
- JP2001012548A JP2001012548A JP18280699A JP18280699A JP2001012548A JP 2001012548 A JP2001012548 A JP 2001012548A JP 18280699 A JP18280699 A JP 18280699A JP 18280699 A JP18280699 A JP 18280699A JP 2001012548 A JP2001012548 A JP 2001012548A
- Authority
- JP
- Japan
- Prior art keywords
- outer cylinder
- cylinder
- elastic body
- pair
- vibration
- 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
Landscapes
- Vibration Prevention Devices (AREA)
- Springs (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、振動を発生する部
材からの振動の伝達を防止する防振装置及びこのような
防振装置を製造する防振装置の製造方法に関し、例えば
自動車のサスペンションに用いられるブッシュ等のメン
バーマウント類に適用可能なものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration isolator for preventing transmission of vibration from a member that generates vibration and a method for manufacturing such a vibration isolator, and for example, relates to a suspension for an automobile. It is applicable to member mounts such as a bush used.
【０００２】[0002]
【従来の技術】例えば、振動発生部となるタイヤと振動
受部となる車体との間に自動車のサスペンションが配設
されていて、タイヤ側で発生する振動をこのサスペンシ
ョンが吸収し、振動が車体側に伝達されるのを阻止する
ような構造が知られている。そして、このサスペンショ
ンに用いられるブッシュとしての防振装置の一例とし
て、図６及び図７に示すような構造のものが知られてい
る。つまり、図６及び図７に示すように、内筒１１２と
外筒１１４との間を弾性体１１６が繋いだ構造となって
いる。そして、ブッシュとしての機能上の要請から、Ｚ
方向及びＹ方向のばね定数を一定の大きさに維持しつ
つ、Ｘ方向のばね定数のみを低下するべく、凹部となる
スグリ部１１６ＡをＸ方向に沿って弾性体１１６に一対
設け、このＸ方向に沿って弾性体１１６を変形し易くし
ている。2. Description of the Related Art For example, a vehicle suspension is disposed between a tire serving as a vibration generating unit and a vehicle body serving as a vibration receiving unit. The suspension absorbs vibration generated on the tire side, and the vibration is transmitted to the vehicle body. Structures are known that block transmission to the side. As an example of a vibration isolator as a bush used for this suspension, one having a structure as shown in FIGS. 6 and 7 is known. That is, as shown in FIGS. 6 and 7, the elastic body 116 is connected between the inner cylinder 112 and the outer cylinder 114. And, from the functional requirement as a bush, Z
In order to reduce only the spring constant in the X direction while maintaining the spring constants in the direction and the Y direction to be constant, a pair of curvy portions 116A serving as concave portions are provided on the elastic body 116 along the X direction. Along, the elastic body 116 is easily deformed.
【０００３】[0003]
【発明が解決しようとする課題】しかし、以上の構造に
よるばね定数の設定では不充分と考え、Ｚ方向及びＹ方
向のばね定数の値を維持しつつ、Ｘ方向のばね定数のみ
をさらに極力低くしたい場合も生じる。但しこの場合に
は、内筒１１２にリング状に形成された凸部１１２Ａと
の間で、Ｚ方向の弾性体１１６の過大な変形を防止する
為に、リング状の屈曲部１１４Ａが外筒１１４に設けら
れているので、この屈曲部１１４Ａが邪魔となって弾性
体１１６を貫通する構造のスグリ部を設けることができ
なかった。この為、ばね定数の値の設定が不充分であっ
ても、図６及び図７に示す構造の防振装置によって、Ｘ
方向のばね定数をこれ以上低くすることは困難であっ
た。However, it is considered that the setting of the spring constant by the above structure is not sufficient, and only the spring constant in the X direction is reduced as much as possible while maintaining the values of the spring constants in the Z direction and the Y direction. Sometimes you want to. However, in this case, in order to prevent excessive deformation of the elastic body 116 in the Z direction between the inner cylinder 112 and the convex 112A formed in a ring shape, the ring-shaped bent portion 114A is provided with an outer cylinder 114A. Therefore, the curving portion having a structure penetrating the elastic body 116 with the bent portion 114A serving as a hindrance could not be provided. Therefore, even if the setting of the value of the spring constant is insufficient, the vibration isolator having the structure shown in FIGS.
It was difficult to further reduce the spring constant in the direction.
【０００４】本発明は上記事実を考慮し、ばね定数の値
の設定可能な範囲をより広くし得る防振装置及びこのよ
うな防振装置を製造する防振装置の製造方法を提供する
ことを目的とする。The present invention has been made in view of the above-described circumstances, and provides a vibration isolator capable of broadening a settable range of a value of a spring constant and a method of manufacturing such a vibration isolator. Aim.
【０００５】[0005]
【課題を解決するための手段】請求項１による防振装置
は、振動発生部及び振動受部の一方に連結される筒状の
外筒と、外筒の内周側に突出するように外筒に設けられ
た外筒側凸部と、外筒の内周側に配置され且つ振動発生
部及び振動受部の他方に連結される内筒と、外筒側凸部
と対向する内筒の箇所に突出されつつ設けられた内筒側
凸部と、これら外筒と内筒との間に配置されて弾性変形
し得る弾性体と、外筒の中心軸廻りで外筒側凸部の存在
する部分と異なる弾性体の部分に位置すると共に外筒の
軸方向に沿って弾性体を貫通して形成されたスグリ部
と、を有することを特徴とする。According to a first aspect of the present invention, there is provided an anti-vibration device having a cylindrical outer cylinder connected to one of a vibration generating section and a vibration receiving section, and an outer cylinder protruding toward the inner periphery of the outer cylinder. An outer cylinder-side projection provided on the cylinder, an inner cylinder disposed on the inner peripheral side of the outer cylinder and connected to the other of the vibration generator and the vibration receiver, and an inner cylinder facing the outer cylinder-side projection. An inner cylinder-side convex portion provided while being protruded at a location, an elastic body disposed between the outer cylinder and the inner cylinder and capable of elastic deformation, and the presence of an outer cylinder-side convex portion around the center axis of the outer cylinder. And a curb portion that is located at a portion of the elastic body different from the portion to be formed and penetrates the elastic body along the axial direction of the outer cylinder.
【０００６】請求項１に係る防振装置の作用を以下に説
明する。外筒或いは内筒のいずれかに連結された振動発
生部側から振動が伝達されると、これら外筒と内筒との
間に配置される弾性体が弾性変形して弾性体により振動
が減衰される。この結果、振動発生部側からの振動が伝
達されると、弾性体の変形により振動が低減されて、振
動受部側に振動が伝達され難くなる。The operation of the vibration isolator according to claim 1 will be described below. When vibration is transmitted from the vibration generating portion connected to either the outer cylinder or the inner cylinder, the elastic body disposed between the outer cylinder and the inner cylinder is elastically deformed and the vibration is attenuated by the elastic body. Is done. As a result, when the vibration is transmitted from the vibration generating unit side, the vibration is reduced by the deformation of the elastic body, and the vibration is hardly transmitted to the vibration receiving unit side.
【０００７】また、外筒の内周側に突出するように外筒
に設けられた外筒側凸部と対向する内筒の箇所に内筒側
凸部が突出されつつ設けられ、外筒の中心軸廻りで外筒
側凸部の存在する部分と異なる弾性体の部分に、スグリ
部が外筒の軸方向に沿って弾性体を貫通して、形成され
る。従って、弾性体の過大な変形を防止等する外筒側凸
部及び内筒側凸部を内外筒の一部に相互に対向して設
け、この外筒側凸部の存在する部分と異なる弾性体の部
分にスグリ部を配置したので、外筒側凸部に邪魔される
ことがなくなり、弾性体を貫通する構造のスグリ部を採
用することが可能となった。この為、ばね定数を低くす
べき方向に合わせてこのスグリ部を配置することで、従
来の防振装置よりも、この方向のばね定数を大きく低下
することが可能になる。[0007] An inner cylinder-side convex portion is provided so as to protrude toward the inner peripheral side of the outer cylinder so as to protrude toward the inner peripheral side of the outer cylinder. A currant portion is formed around the central axis at a portion of the elastic body different from the portion where the outer cylinder side convex portion exists, and penetrates the elastic body along the axial direction of the outer cylinder. Therefore, the outer cylinder-side convex portion and the inner cylinder-side convex portion for preventing excessive deformation of the elastic body are provided to part of the inner and outer cylinders so as to face each other. Since the currant portion is arranged in the body part, the curl portion is not obstructed by the outer cylinder side convex portion, and it is possible to adopt a currant portion having a structure penetrating the elastic body. For this reason, by arranging the curling portion in the direction in which the spring constant should be reduced, the spring constant in this direction can be significantly reduced as compared with the conventional vibration isolator.
【０００８】つまり、防振装置に加わる振動の方向とし
て、防振装置の軸方向（例えばＺ方向）及び、防振装置
の軸方向とそれぞれ直交し且つ相互に直交する２方向
（例えばＹ方向、Ｘ方向）の合わせて３方向存在するこ
とになる。そして、この３方向内の防振装置の軸方向及
び、防振装置の軸方向と直交する２方向の内の一方の方
向（例えばＹ方向）のばね定数を一定の値に維持しつ
つ、この軸方向と直交する２方向の内のもう一方の方向
（例えばＸ方向）のばね定数を、スグリ部を配置するこ
とで極力低くできるようになった。この結果、本請求項
によれば、防振装置のばね定数の値の設定可能な範囲を
より広くできるようになった。That is, as the directions of vibration applied to the vibration isolator, two directions (for example, Y direction, orthogonal to the axial direction of the vibration isolator, and orthogonal to the axial direction of the vibration isolator, respectively). (X direction). Then, while maintaining the spring constants in the axial direction of the vibration isolator in these three directions and in one of two directions (for example, the Y direction) orthogonal to the axial direction of the vibration isolator at a constant value, The spring constant in the other direction (for example, the X direction) of the two directions orthogonal to the axial direction can be made as low as possible by disposing the currant portion. As a result, according to the present invention, the settable range of the value of the spring constant of the vibration isolator can be made wider.
【０００９】請求項２に係る防振装置の作用を以下に説
明する。本請求項も請求項１と同様の構成を有して同様
に作用するものの、外筒側凸部が外筒の中心軸を挟む位
置関係で外筒に一対設けられ、これら一対の外筒側凸部
に対応して、内筒に内筒側凸部が一対設けられると共に
弾性体にスグリ部が一対形成された構成を有する。従っ
て、スグリ部が弾性体に一対形成されたので、防振装置
の軸方向と直交する２方向の内のもう一方の方向（例え
ばＸ方向）のばね定数をより低下させることができ、ば
ね定数の値の設定可能な範囲をより一層広くできるよう
になった。The operation of the vibration isolator according to claim 2 will be described below. Although the present invention has the same configuration as that of the first aspect and operates in the same manner, a pair of outer cylinder-side protrusions are provided on the outer cylinder in a positional relationship sandwiching the center axis of the outer cylinder. The inner cylinder is provided with a pair of inner cylinder-side projections corresponding to the projections, and the elastic body is formed with a pair of currant portions. Therefore, since the pair of curls are formed on the elastic body, the spring constant in the other direction (for example, the X direction) of the two directions orthogonal to the axial direction of the vibration isolator can be further reduced, and the spring constant can be reduced. Can be set more widely.
【００１０】請求項３に係る防振装置の作用を以下に説
明する。本請求項も請求項１と同様の構成を有して同様
に作用するものの、外筒の一端に内周側にリング状に広
がる屈曲部が形成され、この屈曲部の一部が内周側に延
長されて外筒側凸部が設けられた構成を有する。従っ
て、この屈曲部が外筒側凸部の補強及び弾性体の抜け止
め等の作用を奏して、より強固な構造の防振装置を得る
ことが可能となった。The operation of the vibration isolator according to claim 3 will be described below. The present invention has the same structure as that of the first aspect and operates in the same manner. However, a bent portion extending in a ring shape is formed at one end of the outer cylinder on the inner peripheral side, and a part of the bent portion is formed on the inner peripheral side. And the outer cylinder side convex portion is provided. Therefore, the bent portion has an effect of reinforcing the outer cylinder side convex portion and preventing the elastic body from coming off, and it has become possible to obtain a vibration isolator having a stronger structure.
【００１１】請求項４に係る防振装置の作用を以下に説
明する。本請求項も請求項１と同様の構成を有して同様
に作用するものの、スグリ部の内壁を形成する弾性体の
部分に、三角形状にスグリ部内に突出する突状部が設け
られた構成を有する。従って、大きな変位が防振装置に
入力されて、内筒と外筒との間の弾性体が大きく変形し
スグリ部の内壁同士が接触しても、この突状部の先端が
最初に接触するので、三角形状の突状部の変形に伴って
ばね定数が急激に大きくならない。そして、突状部の変
形でばね定数が徐々に大きくなる。The operation of the vibration isolator according to claim 4 will be described below. The present invention has the same configuration as that of the first aspect and operates in the same manner. However, a configuration is provided in which an elastic body forming the inner wall of the currant portion is provided with a protruding portion projecting into the currant portion in a triangular shape. Having. Therefore, even if a large displacement is input to the vibration isolator, and the elastic body between the inner cylinder and the outer cylinder is greatly deformed and the inner walls of the currant portion are in contact with each other, the tip of the protruding portion contacts first. Therefore, the spring constant does not suddenly increase with the deformation of the triangular projection. Then, the spring constant gradually increases due to the deformation of the projection.
【００１２】請求項５による防振装置の製造方法は、外
筒の内周側に突出した外筒側凸部と内筒から突出した内
筒側凸部とが対向するように、外筒の内周側に内筒を配
置し、次に、これらの間にゴム材を加硫して外筒と内筒
との間に弾性体を設けるのに伴って、外筒の中心軸廻り
で外筒側凸部の存在する部分と異なる弾性体の部分に、
外筒の軸方向に沿って弾性体を貫通するスグリ部を形成
したことを特徴とする。According to a fifth aspect of the present invention, there is provided a method of manufacturing an anti-vibration device, wherein the outer cylinder-side projection protruding toward the inner peripheral side of the outer cylinder faces the inner cylinder-side projection protruding from the inner cylinder. The inner cylinder is arranged on the inner peripheral side, and then the rubber material is vulcanized between them to provide an elastic body between the outer cylinder and the inner cylinder. In the part of the elastic body different from the part where the cylinder side convex part exists,
It is characterized in that a currant portion penetrating the elastic body is formed along the axial direction of the outer cylinder.
【００１３】請求項５に係る防振装置の製造方法の作用
を以下に説明する。外筒の内周側に突出した外筒側凸部
と内筒から突出した内筒側凸部とが対向した状態で、外
筒の内周側に内筒を配置し、これらの間にゴム材を加硫
して外筒と内筒との間に弾性体を設けることで、防振装
置を製造する。この際、外筒の中心軸廻りで外筒側凸部
の存在する部分と異なる弾性体の部分に、外筒の軸方向
に沿って弾性体を貫通するスグリ部を形成した。The operation of the method for manufacturing a vibration isolator according to claim 5 will be described below. The inner cylinder is disposed on the inner circumference of the outer cylinder in a state where the outer cylinder-side projection protruding toward the inner circumference of the outer cylinder and the inner cylinder-side projection protruding from the inner cylinder face each other. A vibration isolator is manufactured by vulcanizing the material and providing an elastic body between the outer cylinder and the inner cylinder. At this time, a curb portion penetrating the elastic body along the axial direction of the outer cylinder was formed on a portion of the elastic body around the center axis of the outer cylinder different from the portion where the outer cylinder side convex portion exists.
【００１４】従って、請求項１と同様に、外筒の中心軸
廻りで外筒側凸部の存在する部分と異なる弾性体の部分
にスグリ部を配置したので、外筒側凸部に邪魔されるこ
とがなくなり、弾性体を貫通する構造のスグリ部を採用
することが可能となった。この結果、本請求項によれ
ば、このような構造のスグリ部を有することによって請
求項１と同様に、ばね定数の値の設定可能な範囲をより
広くした防振装置を作れるようになった。[0014] Therefore, similarly to the first aspect, since the curvilinear portion is arranged around the center axis of the outer cylinder at a portion of the elastic body different from the portion where the outer cylinder-side convex portion exists, it is obstructed by the outer cylinder-side convex portion. This makes it possible to employ a currant portion having a structure penetrating the elastic body. As a result, according to the present invention, it is possible to produce a vibration isolator having a wider settable range of the value of the spring constant as in the first embodiment by having the curving portion having such a structure. .
【００１５】請求項６に係る防振装置の製造方法の作用
を以下に説明する。本請求項は請求項２と同様の構成を
有した防振装置の製造方法であるので、この製造方法に
より完成された防振装置は請求項２と同様の作用を奏す
ることになる。The operation of the method for manufacturing a vibration isolator according to claim 6 will be described below. Since the present invention is a method of manufacturing a vibration isolator having the same configuration as that of the second aspect, the vibration isolator completed by this manufacturing method has the same operation as that of the second aspect.
【００１６】[0016]
【発明の実施の形態】次に、本発明に係る防振装置及び
防振装置の製造方法の一実施の形態を図１から図５に示
し、これらの図に基づき本実施の形態を説明する。図１
から図４までに示すように、本実施の形態に係るサスペ
ンション装置用のサスペンションピボットブッシュであ
る防振装置１０の外枠を外筒金具１２が構成し、タイヤ
を先端側で支持している図示しないアームの基端側にこ
の外筒金具１２が圧入されている。FIG. 1 to FIG. 5 show an embodiment of a vibration isolator and a method of manufacturing the vibration isolator according to the present invention, and the present embodiment will be described with reference to these drawings. . FIG.
As shown in FIG. 4 to FIG. 4, an outer cylinder fitting 12 constitutes an outer frame of an anti-vibration device 10 which is a suspension pivot bush for a suspension device according to the present embodiment, and a tire is supported at a tip end side. This outer cylinder fitting 12 is press-fitted to the base end side of the arm not to be used.
【００１７】そして、この外筒金具１２の本体部分を円
筒状に形成された筒状部１２Ａが構成し、図１から図３
に示すように、この筒状部１２Ａの軸方向に沿った一端
側には、屈曲部１２Ｂが筒状部１２Ａの内周側にリング
状に広がるように、屈曲されつつ形成されている。さら
に、外筒金具１２の中心軸Ｃを挟む位置関係で、この屈
曲部１２Ｂの一部が内周側に延長されることで、外筒側
凸部１２Ｃが外筒金具１２に一対設けられている。この
外筒側凸部１２Ｃの先端部分は、外筒金具１２の中心軸
Ｃを中心とした円弧状とされていて、これら一対の外筒
側凸部１２Ｃの先端部分により外筒金具１２の一端部の
最小径部分が形成される。The main body of the outer tube fitting 12 is formed by a cylindrical portion 12A formed in a cylindrical shape.
As shown in (1), a bent portion 12B is formed at one end of the cylindrical portion 12A along the axial direction while being bent so as to spread in a ring shape on the inner peripheral side of the cylindrical portion 12A. Further, a part of the bent portion 12B is extended toward the inner peripheral side in a positional relationship sandwiching the central axis C of the outer cylinder fitting 12, so that a pair of outer cylinder-side protrusions 12C is provided on the outer cylinder fitting 12. I have. The distal end portion of the outer cylinder side convex portion 12C is formed in an arc shape centering on the central axis C of the outer cylinder metal member 12, and one end of the outer cylinder metal member 12 is formed by the distal end portions of the pair of outer cylinder side convex portions 12C. A minimum diameter portion of the portion is formed.
【００１８】また、図１及び図２に示すように、外筒金
具１２の内側であって外筒金具１２と同軸状の位置に
は、円管状に形成される内筒金具１６が配置されてお
り、この内筒金具１６の軸方向中央部であって、図２に
示す外筒側凸部１２Ｃと対向する箇所には、一対の内筒
側凸部１６Ａが鍛造加工等されてそれぞれ設けられてい
る。すなわち、これら一対の内筒側凸部１６Ａは、内筒
金具１６の軸方向に対して直角な方向に沿って内筒金具
１６の外周面から突出されるように、形成されている。
尚、外筒金具１２と内筒金具１６とは同軸状で平行に配
置されているので、これらの軸方向及び中心軸Ｃはそれ
ぞれ相互に同一のものとなり、これらの軸方向が防振装
置の軸方向となる。そして、この内筒金具１６が、図示
しない車体の一部にボルト等により連結される構造とな
っている。As shown in FIGS. 1 and 2, an inner cylindrical member 16 formed in a tubular shape is disposed inside the outer cylindrical member 12 and at a position coaxial with the outer cylindrical member 12. A pair of inner cylinder-side protrusions 16A is provided by forging or the like at a central portion in the axial direction of the inner cylinder fitting 16 and opposed to the outer cylinder-side protrusion 12C shown in FIG. ing. That is, the pair of inner cylinder-side protrusions 16 </ b> A is formed so as to protrude from the outer peripheral surface of the inner cylinder fitting 16 along a direction perpendicular to the axial direction of the inner cylinder fitting 16.
In addition, since the outer cylinder fitting 12 and the inner cylinder fitting 16 are coaxially arranged in parallel, their axial directions and the center axis C are mutually the same, and these axial directions are the same as those of the vibration isolator. Axial direction. The inner tube fitting 16 is connected to a part of a vehicle body (not shown) by a bolt or the like.
【００１９】さらに、外筒金具１２と内筒金具１６との
間には、外筒金具１２及び内筒金具１６にそれぞれ加硫
接着されたゴム製の弾性体１４が配置されており、内筒
側凸部１６Ａ及び外筒側凸部１２Ｃの周りにも弾性体１
４が加硫接着されている。従って、内筒側凸部１６Ａと
外筒側凸部１２Ｃとの間にも、弾性体１４が介在される
こととなる。Further, between the outer cylinder fitting 12 and the inner cylinder fitting 16, rubber elastic members 14 which are respectively vulcanized and bonded to the outer cylinder fitting 12 and the inner cylinder fitting 16 are arranged. The elastic body 1 is also provided around the side projection 16A and the outer cylinder side projection 12C.
4 is vulcanized and adhered. Therefore, the elastic body 14 is also interposed between the inner cylinder side protrusion 16A and the outer cylinder side protrusion 12C.
【００２０】この一方、内筒金具１６の軸方向であるＺ
方向と直交するＸ方向に沿って弾性体１４が変形し易い
ように、図３に示すごとく、外筒金具１２の中心軸Ｃ廻
りで一対の外筒側凸部１２Ｃの存在する部分とそれぞれ
９０°の角度異なる弾性体１４の部分に、一対のスグリ
部１４Ａがそれぞれ外筒金具１２の軸方向に沿って、図
１に示すように弾性体１４を貫通して、形成される。そ
して、図３に示すように、このスグリ部１４Ａ自体は内
筒金具１６の中心軸Ｃ廻りに９０°程度の角度θで大き
く広がって形成されており、スグリ部１４Ａの内壁を形
成する弾性体１４の部分には、三角形状にスグリ部１４
Ａ内に突出する突状部１４Ｂがそれぞれ設けられてい
る。On the other hand, Z which is the axial direction of
As shown in FIG. 3, a portion around the center axis C of the outer tube fitting 12 and a portion where the pair of outer tube side protrusions 12 </ b> C exist is provided so that the elastic body 14 is easily deformed along the X direction orthogonal to the direction. At a portion of the elastic body 14 having a different angle of °, a pair of gore portions 14A are formed along the axial direction of the outer tube fitting 12 so as to penetrate the elastic body 14 as shown in FIG. As shown in FIG. 3, the curving portion 14A itself is formed so as to greatly spread around the central axis C of the inner cylindrical member 16 at an angle θ of about 90 °, and an elastic body forming the inner wall of the curling portion 14A. The part 14 is a triangular currant part 14
Projecting portions 14B protruding into A are provided.
【００２１】次に本実施の形態の防振装置１０の組み立
てを説明する。この防振装置１０の組立に際しては、ま
ず図５に示すように、外筒金具１２の内周側に突出した
一対の外筒側凸部１２Ｃと内筒金具１６から突出した一
対の内筒側凸部１６Ａとが対向した状態で、外筒金具１
２の内周側に内筒金具１６を配置する。この後、ゴム材
を一体的に加硫接着して外筒金具１２と内筒金具１６と
の間に、図１及び図２に示すように弾性体１４を設ける
ことで、図４に示す防振装置１０が完成される。Next, assembling of the vibration isolator 10 of the present embodiment will be described. At the time of assembling the vibration isolator 10, first, as shown in FIG. 5, a pair of outer cylinder side protrusions 12 </ b> C protruding to the inner peripheral side of the outer cylinder fitting 12 and a pair of inner cylinder sides protruding from the inner cylinder fitting 16. In a state where the convex portion 16A is opposed to the outer tube fitting 1,
The inner tube fitting 16 is arranged on the inner peripheral side of the second member 2. Thereafter, the rubber material is integrally vulcanized and bonded, and an elastic body 14 is provided between the outer cylinder fitting 12 and the inner cylinder fitting 16 as shown in FIGS. The vibration device 10 is completed.
【００２２】そしてこの際、中心軸Ｃ廻りで一対の外筒
側凸部１２Ｃの存在する部分とそれぞれ９０°の角度異
なる弾性体１４の部分に、内筒金具１６及び外筒金具１
２の軸方向であるＺ方向に沿って弾性体１４を貫通する
スグリ部１４Ａを形成し、最後にこの完成された防振装
置１０を車体とアームとの間に装着する。At this time, the inner cylindrical fitting 16 and the outer cylindrical fitting 1 are attached to a portion of the elastic body 14 which is different from the portion where the pair of outer cylindrical side protruding portions 12C exist around the central axis C by 90 °.
A curving portion 14A penetrating the elastic body 14 along the Z direction which is the second axial direction is formed, and finally the completed vibration isolator 10 is mounted between the vehicle body and the arm.
【００２３】次に、上記のように組立てられて製造され
た本実施の形態の防振装置１０の作用を説明する。車両
が走行して、路面側からタイヤ及びアームを介して振動
が外筒金具１２に伝達されると、外筒金具１２と内筒金
具１６との間に配置される弾性体１４が変形する。この
結果として、弾性体１４の内部摩擦に基づく抵抗によっ
て振動が吸収されて振動が減衰し、内筒金具１６に連結
される車体側に振動が伝達され難くなる。Next, the operation of the vibration isolator 10 of the present embodiment assembled and manufactured as described above will be described. When the vehicle travels and vibration is transmitted from the road surface to the outer cylinder 12 via the tires and the arms, the elastic body 14 disposed between the outer cylinder 12 and the inner cylinder 16 is deformed. As a result, the vibration is absorbed by the resistance based on the internal friction of the elastic body 14, and the vibration is attenuated, so that the vibration is less likely to be transmitted to the vehicle body connected to the inner tube fitting 16.
【００２４】また、図１から図３に示すように、外筒金
具１２の一端に内周側にリング状に広がるように形成さ
れた屈曲部１２Ｂの一部が、外筒金具１２の内周側にそ
れぞれ突出するように延長されて、外筒金具１２の中心
軸Ｃを挟む位置関係で外筒金具１２に外筒側凸部１２Ｃ
が一対設けられ、これら一対の外筒側凸部１２Ｃと対向
する内筒金具１６の箇所に内筒側凸部１６Ａがそれぞれ
突出されつつ一対設けられている。さらに、中心軸Ｃ廻
りで一対の外筒側凸部１２Ｃの存在する部分とそれぞれ
９０°の角度異なる弾性体１４の部分に、一対のスグリ
部１４Ａが外筒金具１２の軸方向に沿って弾性体１４を
それぞれ貫通して、形成される。As shown in FIGS. 1 to 3, a part of a bent portion 12B formed at one end of the outer cylindrical member 12 so as to expand in a ring shape on the inner peripheral side is formed on the inner peripheral portion of the outer cylindrical member 12. The outer cylinder fitting 12 is extended so as to protrude to the outer cylinder fitting 12 so as to sandwich the central axis C of the outer cylinder fitting 12.
Are provided, and a pair of inner cylinder-side convex portions 16A is provided so as to protrude at a position of the inner cylinder fitting 16 facing the pair of outer cylinder-side convex portions 12C. Further, a pair of curving portions 14A elastically extend along the axial direction of the outer cylinder fitting 12 at a portion of the elastic body 14 which is different from the portion where the pair of outer cylinder side projections 12C are present by 90 ° around the central axis C. It is formed through each of the bodies 14.
【００２５】つまり、弾性体１４の過大な変形を防止等
する外筒側凸部１２Ｃ及び内筒側凸部１６Ａを内外筒の
一部に相互に対向してそれぞれ一対づつ設け、この外筒
側凸部１２Ｃ及び内筒側凸部１６Ａの存在する部分と異
なる弾性体１４の部分に、スグリ部１４Ａを一対配置し
た。従って、外筒側凸部１２Ｃと対向しないように、Ｘ
方向に沿って一対のスグリ部１４Ａを配置したので、外
筒側凸部１２Ｃに邪魔されることがなくなって、弾性体
１４を貫通する構造のスグリ部１４Ａを採用することが
可能となった。この為、本実施の形態のように、ばね定
数を低くすべきＸ方向に合わせてこのスグリ部１４Ａを
配置することで、従来の防振装置よりも、このＸ方向の
ばね定数を大きく低下することが可能になる。That is, a pair of outer cylinder-side protrusions 12C and inner cylinder-side protrusions 16A for preventing excessive deformation of the elastic body 14 are provided on a part of the inner and outer cylinders, respectively. A pair of curly portions 14A are arranged on a portion of the elastic body 14 different from the portion where the convex portion 12C and the inner cylinder side convex portion 16A exist. Therefore, X is set so as not to face the outer cylinder side convex portion 12C.
Since the pair of currant portions 14A are arranged along the direction, the curl portion 14A having a structure penetrating the elastic body 14 can be adopted without being obstructed by the outer cylinder side convex portion 12C. For this reason, by arranging the currant portion 14A in the X direction in which the spring constant is to be reduced as in the present embodiment, the spring constant in the X direction is greatly reduced as compared with the conventional vibration isolator. It becomes possible.
【００２６】すなわち、防振装置１０に加わる振動の方
向として、図１から図３に示すように、防振装置１０の
軸方向でもあるＺ方向及び、防振装置１０の軸方向とそ
れぞれ直交し且つ相互に直交する２方向であるＹ方向、
Ｘ方向の合わせて３方向存在することになる。そして、
この３方向内のＺ方向及びＹ方向のばね定数を一定の値
に維持しつつ、Ｘ方向のばね定数を、スグリ部１４Ａを
配置することで、極力低くできるようになった。但し、
本実施の形態によれば、スグリ部１４Ａの大きさや幅等
を変更することで、従来の防振装置のＸ方向のばね定数
と同等のばね定数を得ることも可能である。That is, as shown in FIGS. 1 to 3, the direction of the vibration applied to the vibration isolator 10 is orthogonal to the Z direction which is also the axial direction of the vibration isolator 10 and the axial direction of the vibration isolator 10. And a Y direction which is two directions orthogonal to each other,
There are three directions including the X direction. And
The spring constant in the X direction can be made as low as possible by arranging the curling portion 14A while maintaining the spring constants in the Z direction and the Y direction in these three directions at constant values. However,
According to the present embodiment, it is also possible to obtain a spring constant equivalent to the spring constant in the X direction of the conventional vibration isolator by changing the size and width of the curving portion 14A.
【００２７】以上より、本実施の形態によれば、防振装
置１０のばね定数の値の設定可能な範囲をより広くでき
るようになり、Ｙ方向及びＺ方向に高いばね定数が要求
されつつ、Ｘ方向のばね定数を極力低減したい場合にお
いて、最適な構造の防振装置を作り出すことが可能とな
った。As described above, according to the present embodiment, the range in which the value of the spring constant of the vibration isolator 10 can be set can be made wider, and high spring constants in the Y and Z directions are required. When it is desired to reduce the spring constant in the X direction as much as possible, it is possible to create a vibration isolator having an optimal structure.
【００２８】さらに、本実施の形態では、スグリ部１４
Ａが弾性体１４に一対形成されているので、Ｚ方向と直
交するＸ方向のばね定数をより大きく低下させることが
でき、ばね定数の値の設定可能な範囲をより一層広くで
きるようになった。一方、外筒金具１２の一端に内周側
にリング状に広がる屈曲部１２Ｂが形成され、この屈曲
部１２Ｂの一部が内周側に延長されて外筒側凸部１２Ｃ
が設けられているので、この屈曲部１２Ｂが外筒側凸部
１２Ｃの補強及び弾性体１４の抜け止め等の作用を奏し
て、より強固な構造の防振装置１０を得ることが可能と
もなった。Further, in the present embodiment, the currant portion 14
Since the pair A is formed on the elastic body 14, the spring constant in the X direction orthogonal to the Z direction can be further reduced, and the settable range of the value of the spring constant can be further widened. . On the other hand, a bent portion 12B is formed at one end of the outer cylinder fitting 12 and expands in a ring shape on the inner peripheral side, and a part of the bent portion 12B is extended to the inner peripheral side to form the outer cylinder side convex portion 12C.
Is provided, the bent portion 12B functions to reinforce the outer cylinder-side convex portion 12C and prevent the elastic body 14 from coming off, so that the vibration damping device 10 having a stronger structure can be obtained. .
【００２９】他方、スグリ部１４Ａの内壁を形成する弾
性体１４の部分に、三角形状にスグリ部１４Ａ内に突出
する突状部１４Ｂが設けられている。従って、Ｘ方向に
沿って大きな変位が防振装置１０に入力されて、弾性体
１４が大きく変形しスグリ部１４Ａの内壁同士が接触し
ても、この突状部１４Ｂの先端が最初に接触するので、
三角形状の突状部１４Ｂの変形に伴ってばね定数が急激
に大きくならない。そして、突状部１４Ｂの変形でばね
定数が徐々に大きくなる。On the other hand, a projecting portion 14B that protrudes into the currant portion 14A in a triangular shape is provided on a portion of the elastic body 14 that forms the inner wall of the currant portion 14A. Therefore, even if a large displacement is input to the vibration isolator 10 in the X direction and the elastic body 14 is greatly deformed and the inner walls of the curvy portion 14A come into contact with each other, the tip of the projecting portion 14B comes into contact first. So
The spring constant does not increase rapidly with the deformation of the triangular projection 14B. Then, the spring constant gradually increases due to the deformation of the projection 14B.
【００３０】尚、上記実施の形態において、一対の外筒
側凸部１２Ｃの存在する部分とそれぞれ９０°の角度異
なる弾性体１４の部分に、一対のスグリ部１４Ａを形成
したが、角度は必ずしも９０°でなくとも良い。また、
スグリ部１４Ａの数も一対でなくとも良く、スグリ部１
４Ａの大きさも種々選定することが可能である。さら
に、上記実施の形態において、振動発生部であるタイヤ
側に外筒が取り付けられ、振動受部である車体側に内筒
が取り付けられる構成とされたが、この逆の構成として
もよい。また、上記実施の形態において、自動車のサス
ペンション等の防振を目的としたが、本発明の防振装置
は他の用途にも用いられることはいうまでもなく、ま
た、形状等も実施の形態のものに限定されるものではな
い。In the above-described embodiment, a pair of curvy portions 14A are formed on the portion of the elastic body 14 which is different from the portion on which the pair of outer cylinder side convex portions 12C are present by 90 °, but the angle is not necessarily limited. The angle may not be 90 °. Also,
The number of the currant portions 14A does not have to be a pair.
The size of 4A can be variously selected. Further, in the above-described embodiment, the outer cylinder is attached to the tire side which is the vibration generating section, and the inner cylinder is attached to the vehicle body side which is the vibration receiving section. However, the reverse configuration may be adopted. Further, in the above-described embodiment, the purpose of the present invention is to dampen a suspension of an automobile or the like. However, it goes without saying that the anti-vibration device of the present invention can be used for other purposes, and the shape and the like of the embodiment are also different. However, the present invention is not limited to this.
【００３１】[0031]
【発明の効果】以上説明したように、本発明の防振装置
及び防振装置の製造方法は上記構成としたので、ばね定
数の値の設定可能な範囲をより広くした防振装置を得る
ことができるという優れた効果を有する。As described above, since the vibration isolator and the method of manufacturing the vibration isolator according to the present invention have the above-described structure, it is possible to obtain a vibration isolator having a wider settable range of the value of the spring constant. It has an excellent effect that it can be produced.
【図１】本発明に係る防振装置の一実施の形態の断面図
であって、図３の１−１矢視線断面図である。FIG. 1 is a cross-sectional view of one embodiment of a vibration isolator according to the present invention, and is a cross-sectional view taken along line 1-1 of FIG.
【図２】本発明に係る防振装置の一実施の形態の断面図
であって、図３の２−２矢視線断面図である。FIG. 2 is a cross-sectional view of one embodiment of the vibration isolator according to the present invention, and is a cross-sectional view taken along line 2-2 of FIG.
【図３】図１の３−３矢視線図である。FIG. 3 is a view taken in the direction of arrow 3-3 in FIG. 1;
【図４】本発明に係る防振装置の一実施の形態の斜視図
である。FIG. 4 is a perspective view of an embodiment of a vibration isolator according to the present invention.
【図５】本発明に係る防振装置の一実施の形態の組立て
を説明する斜視図である。FIG. 5 is a perspective view for explaining the assembling of one embodiment of the vibration isolator according to the present invention.
【図６】従来の防振装置を示す正面図である。FIG. 6 is a front view showing a conventional vibration isolator.
【図７】図６の７−７矢視線断面図である。FIG. 7 is a sectional view taken along line 7-7 of FIG. 6;
１０ 防振装置 １２ 外筒金具 １２Ｃ 外筒側凸部 １４ 弾性体 １４Ａ スグリ部 １６ 内筒金具 １６Ａ 内筒側凸部 DESCRIPTION OF SYMBOLS 10 Vibration isolator 12 Outer cylinder fitting 12C Outer cylinder side convex part 14 Elastic body 14A Curtain part 16 Inner cylinder fitting 16A Inner cylinder side convex part
Claims (6)
れる筒状の外筒と、 外筒の内周側に突出するように外筒に設けられた外筒側
凸部と、 外筒の内周側に配置され且つ振動発生部及び振動受部の
他方に連結される内筒と、 外筒側凸部と対向する内筒の箇所に突出されつつ設けら
れた内筒側凸部と、 これら外筒と内筒との間に配置されて弾性変形し得る弾
性体と、 外筒の中心軸廻りで外筒側凸部の存在する部分と異なる
弾性体の部分に位置すると共に外筒の軸方向に沿って弾
性体を貫通して形成されたスグリ部と、 を有することを特徴とする防振装置。A cylindrical outer cylinder connected to one of the vibration generating section and the vibration receiving section; an outer cylinder side projection provided on the outer cylinder so as to protrude toward the inner peripheral side of the outer cylinder; An inner cylinder disposed on the inner peripheral side of the cylinder and connected to the other of the vibration generating section and the vibration receiving section; and an inner cylinder side convex section provided so as to protrude at a position of the inner cylinder opposite to the outer cylinder side convex section. An elastic body disposed between the outer cylinder and the inner cylinder and capable of being elastically deformed; and an elastic body that is located around a central axis of the outer cylinder and is different from a portion where the outer cylinder-side convex portion is present. A curb portion formed by penetrating the elastic body along the axial direction of the cylinder.
係で外筒に一対設けられ、これら一対の外筒側凸部に対
応して、内筒に内筒側凸部が一対設けられると共に弾性
体にスグリ部が一対形成されることを特徴とする請求項
１記載の防振装置。2. A pair of outer cylinder-side projections are provided on the outer cylinder in a positional relationship sandwiching a center axis of the outer cylinder, and the inner cylinder has an inner cylinder-side projection corresponding to the pair of outer cylinder-side projections. The vibration isolator according to claim 1, wherein a pair of the curl portions are formed on the elastic body.
屈曲部が形成され、この屈曲部の一部が内周側に延長さ
れて外筒側凸部が設けられたことを特徴とする請求項１
記載の防振装置。3. An end portion of the outer cylinder is formed with a bent portion extending in a ring shape on the inner peripheral side, and a part of the bent portion is extended to the inner peripheral side to provide an outer cylinder side convex portion. Claim 1
Anti-vibration device as described.
に、三角形状にスグリ部内に突出する突状部が設けられ
たことを特徴とする請求項１記載の防振装置。4. The vibration damping device according to claim 1, wherein a protrusion that protrudes into the currant portion in a triangular shape is provided at a portion of the elastic body that forms the inner wall of the currant portion.
筒から突出した内筒側凸部とが対向するように、外筒の
内周側に内筒を配置し、 次に、これらの間にゴム材を加硫して外筒と内筒との間
に弾性体を設けるのに伴って、外筒の中心軸廻りで外筒
側凸部の存在する部分と異なる弾性体の部分に、外筒の
軸方向に沿って弾性体を貫通するスグリ部を形成したこ
とを特徴とする防振装置の製造方法。5. An inner cylinder is arranged on an inner peripheral side of an outer cylinder such that an outer cylinder-side convex section projecting from the inner cylinder and an inner cylinder-side convex section projecting from the inner cylinder face each other. Next, with the provision of an elastic body between the outer cylinder and the inner cylinder by vulcanizing the rubber material between them, it differs from the portion where the outer cylinder side convex portion exists around the center axis of the outer cylinder. A method for manufacturing a vibration damping device, comprising: forming a curb portion penetrating the elastic body along the axial direction of the outer cylinder at the elastic body portion.
係で外筒に一対設けられ、これら一対の外筒側凸部に対
応して、内筒に内筒側凸部が一対設けられると共に弾性
体にスグリ部が一対形成されることを特徴とする請求項
５記載の防振装置の製造方法。6. A pair of outer cylinder-side projections are provided on the outer cylinder in a positional relationship sandwiching the center axis of the outer cylinder, and the inner cylinder has an inner cylinder-side projection corresponding to the pair of outer cylinder-side projections. 6. The method according to claim 5, wherein a pair of curving portions are provided on the elastic body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18280699A JP2001012548A (en) | 1999-06-29 | 1999-06-29 | Vibration damping device and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18280699A JP2001012548A (en) | 1999-06-29 | 1999-06-29 | Vibration damping device and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001012548A true JP2001012548A (en) | 2001-01-16 |
Family
ID=16124770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18280699A Pending JP2001012548A (en) | 1999-06-29 | 1999-06-29 | Vibration damping device and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001012548A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7922157B2 (en) | 2006-09-29 | 2011-04-12 | Tokai Rubber Industries, Ltd. | Stopper for cylindrical elastic mount and cylindrical elastic mount assembly |
-
1999
- 1999-06-29 JP JP18280699A patent/JP2001012548A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7922157B2 (en) | 2006-09-29 | 2011-04-12 | Tokai Rubber Industries, Ltd. | Stopper for cylindrical elastic mount and cylindrical elastic mount assembly |
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