JP2003097630A - Vibration-proof bush - Google Patents
Vibration-proof bushInfo
- Publication number
- JP2003097630A JP2003097630A JP2001287672A JP2001287672A JP2003097630A JP 2003097630 A JP2003097630 A JP 2003097630A JP 2001287672 A JP2001287672 A JP 2001287672A JP 2001287672 A JP2001287672 A JP 2001287672A JP 2003097630 A JP2003097630 A JP 2003097630A
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- inner cylinder
- stopper
- bush
- liquid chambers
- 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
- Combined Devices Of Dampers And Springs (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車などの車両
において振動源と車体との連結部位に用いられる防振ブ
ッシュに関し、詳細には、こじり入力に対する耐久性が
向上された液封入式防振ブッシュに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration bush used in a connecting portion between a vibration source and a vehicle body in a vehicle such as an automobile. It is about Bush.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】一般
に、防振ブッシュは、車輪やエンジン等の振動源と車体
との連結部位に振動減衰、緩衝などを目的として用いら
れるものであり、内筒と外筒とをゴム弾性体からなる防
振基体で結合してなる。2. Description of the Related Art Generally, an anti-vibration bush is used for the purpose of damping and damping vibrations at a connecting portion between a vehicle and a vibration source such as a wheel or an engine and a vehicle body. The outer cylinder and the outer cylinder are connected by a vibration-proof base made of a rubber elastic body.
【０００３】例えば、図５（ａ）に示すような自動車の
フロントサスペンションのロアアームリンク（１）で
は、車輪側のボールジョイントを車体側のクロスメンバ
ーに対して防振的に連結するために、前後２つのブッシ
ュ（２）（３）が用いられている。このアームリンク
（１）は、車両幅方向に延びる腕部（４）の一端にボー
ルジョイントが取り付けられるジョイント取付部（４
Ａ）を備えるとともに、他端に前側ブッシュ（２）が装
着される前側ブッシュ装着部（４Ｂ）を備え、上記腕部
（４）から分岐して車両後方に延びる分岐腕（５）の先
端に後側ブッシュ（３）が装着される後側ブッシュ装着
部（５Ａ）を備える。そして、ジョイント取付部（４
Ａ）と前側ブッシュ装着部（４Ｂ）と後側ブッシュ装着
部（５Ａ）との３点は、前側ブッシュ装着部（４Ｂ）を
直角の角部とする略直角三角形を形成するように配され
ている。For example, in a lower arm link (1) of a front suspension of an automobile as shown in FIG. 5 (a), in order to connect a ball joint on the wheel side to a cross member on the vehicle body in a vibration-proof manner, Two bushes (2) (3) are used. This arm link (1) has a joint attachment portion (4) to which a ball joint is attached at one end of an arm portion (4) extending in the vehicle width direction.
A) and a front bush mounting portion (4B) to which the front bush (2) is mounted at the other end, and at the tip of a branch arm (5) that branches from the arm portion (4) and extends rearward of the vehicle. A rear bush mounting portion (5A) to which the rear bush (3) is mounted is provided. Then, the joint mounting portion (4
A), the front bush mounting portion (4B) and the rear bush mounting portion (5A) are arranged so as to form a substantially right triangle having the front bush mounting portion (4B) as a right angled corner. There is.
【０００４】一般に、かかるアームリンクにおいて、前
後２つのブッシュはともに横置き、即ち軸方向を車両前
後方向に向けて配設されているが、リンク構造の合理化
を図るために、後側ブッシュ（３）を図５（ａ）に示す
ように縦置き、即ち軸方向を車両上下方向に向けて配設
する場合がある。Generally, in such an arm link, the two front and rear bushes are both placed horizontally, that is, the axial direction is oriented in the vehicle front-rear direction, but in order to rationalize the link structure, the rear bush (3 5) is placed vertically as shown in FIG. 5A, that is, the axial direction is arranged in the vehicle vertical direction.
【０００５】前者の横置きの場合、振動源側であるボー
ルジョイントに車両前後方向での入力があったときに
は、後側ブッシュは軸方向に対して斜めに傾斜した方向
での入力を受け、また、ボールジョイントに車両上下方
向での入力があったときには、後側ブッシュはねじり方
向（回転方向）での入力を受ける。これに対して、後者
の縦置きの場合、ボールジョイントに車両前後方向での
入力があったときには、後側ブッシュは軸直角方向（内
外筒間の圧縮方向）における入力を受け、ボールジョイ
ントに車両上下方向での入力があったときには、図５
（ｂ）に示すように後側ブッシュ（３）はこじり方向で
の入力を受けることになる。In the former case of horizontal placement, when there is an input in the longitudinal direction of the vehicle at the ball joint on the vibration source side, the rear bush receives an input in a direction obliquely inclined with respect to the axial direction, and When the ball joint receives an input in the vehicle vertical direction, the rear bush receives the input in the twisting direction (rotational direction). On the other hand, in the latter case of vertical installation, when the ball joint receives an input in the vehicle front-rear direction, the rear bush receives the input in the axis-perpendicular direction (the compression direction between the inner and outer cylinders), and the ball joint receives the vehicle input. When there is an input in the vertical direction,
As shown in (b), the rear bush (3) receives an input in the prying direction.
【０００６】かかるこじり入力は、防振ブッシュを液封
化した場合に、以下のような耐久性悪化の要因になる。The twisting input causes the following deterioration of durability when the vibration-proof bush is liquid-sealed.
【０００７】図６は液封入式防振ブッシュ（50）の一例
を示す断面図であり、内筒（52）と外筒（54）との間を
ゴム弾性体からなる防振基体（56）で結合するととも
に、内外筒（52）（54）間に内筒（52）を挟んで相対向
する一対の液室（58）（60）を設け、両液室（58）（6
0）内にはそれぞれ内外筒（52）（54）間の径方向にお
ける過大変位を規制するストッパ（62）を内筒（52）側
に設けている。このストッパ（62）は、内筒（52）の外
周面にストッパ金具（64）を固設し、その外周にストッ
パゴム部（66）を加硫成形することにより構成されてい
る。FIG. 6 is a cross-sectional view showing an example of the liquid filled type vibration damping bush (50), and a vibration damping base (56) made of a rubber elastic body between the inner cylinder (52) and the outer cylinder (54). And a pair of liquid chambers (58) (60) facing each other with the inner cylinder (52) sandwiched between the inner and outer cylinders (52) (54).
A stopper (62) for restricting an excessive radial displacement between the inner and outer cylinders (52) and (54) is provided inside the inner cylinder (52). The stopper (62) is configured by fixing a stopper fitting (64) to the outer peripheral surface of the inner cylinder (52) and vulcanizing and molding a stopper rubber portion (66) on the outer periphery thereof.
【０００８】かかる液封入式防振ブッシュ（50）におい
て、上記のようなこじり方向での入力、即ち図６，７に
示すように内筒（52）の軸（52ａ）に対して外筒（54）
の軸（54ａ）を軸方向の中間位置を中心（Ｏ）として回
転させるような入力を受けると、図７においてＸで示す
ように、内筒（52）側に設けたストッパ（62）が、液室
（58）（60）の隔壁（68）を構成する防振基体（56）と
干渉してしまい、この部分で亀裂が生じるなど、防振基
体（56）の耐久性が悪化してしまう。In such a liquid-filled type vibration isolation bush (50), the input in the twisting direction as described above, that is, as shown in FIGS. 6 and 7, the shaft (52a) of the inner cylinder (52) with respect to the outer cylinder ( 54)
When an input is received to rotate the shaft (54a) around the intermediate position in the axial direction (O), the stopper (62) provided on the inner cylinder (52) side, as indicated by X in FIG. It interferes with the vibration-isolating substrate (56) forming the partition walls (68) of the liquid chambers (58) (60), and cracks occur at this portion, which deteriorates the durability of the vibration-isolating substrate (56). .
【０００９】このようなストッパ（62）と防振基体（5
6）との内部干渉対策として、防振基体（56）の隔壁（6
8）とストッパ（62）との隙間を大きくする方策が考え
られるが、例えば、防振基体（56）の隔壁（68）を軸方
向外側に移動させて上記隙間を大きくする場合、こじり
角（θ）が同じであれば、こじり中心（Ｏ）からの距離
が遠くなる分だけ上記隔壁（68）の変位量が大きくな
り、歪みが大きくなって耐久性が悪化してしまう。ま
た、ストッパ（62）の軸方向寸法を小さくして上記隙間
を大きくする場合、ストッパゴム部（66）の耐久性が悪
化してしまい、ボールジョイントに車両前後方向での入
力があったときにストッパ（62）がオーバーストローク
しやすくなって耐久性が損なわれてしまう。このように
上記方策では十分な耐久性の向上を図ることはできな
い。The stopper (62) and the vibration-proof base (5
As a measure against internal interference with 6), the partition wall (6
8) and the stopper (62) may be enlarged. For example, when the partition wall (68) of the vibration-proof base (56) is moved outward in the axial direction to increase the gap, the twist angle ( If θ) is the same, the displacement amount of the partition wall (68) increases as the distance from the twisting center (O) increases, and the strain increases and the durability deteriorates. In addition, when the axial dimension of the stopper (62) is reduced to increase the clearance, durability of the stopper rubber portion (66) deteriorates, and when there is an input in the vehicle front-rear direction to the ball joint. The stopper (62) easily overstrokes, and the durability deteriorates. As described above, it is impossible to sufficiently improve durability by the above measures.
【００１０】また、上記液封入式防振ブッシュ（50）
は、こじり方向での入力を受けた場合に、図７において
Ｙで示すように、防振基体（56）の軸方向端面（70）に
おける内筒（52）側の付け根部分において圧縮歪み率な
いし局部応力が上昇して、この部分で亀裂が生じるな
ど、防振基体（56）の耐久性が悪化してしまう。Further, the liquid filled type vibration damping bush (50)
When an input in the twisting direction is received, as shown by Y in FIG. 7, the compressive strain rate or the compressive strain rate at the root portion on the inner cylinder (52) side of the axial end surface (70) of the vibration isolating base (56). The local stress rises and cracks occur at this portion, which deteriorates the durability of the vibration-proof base (56).
【００１１】本発明は、上記の点に鑑みてなされたもの
であり、液封入式防振ブッシュにおいてこじり入力に対
する耐久性を向上することを目的とする。The present invention has been made in view of the above points, and it is an object of the present invention to improve durability against twisting input in a liquid filled type vibration damping bush.
【００１２】[0012]
【課題を解決するための手段】本発明の防振ブッシュ
は、内筒と、該内筒を同心的に取り囲む外筒と、内筒と
外筒の間に設けられて両者を結合するゴム弾性体からな
る防振基体と、を備える防振ブッシュにおいて、前記の
内筒と外筒の間には、周方向において仕切られてオリフ
ィス流路により互いに連通された複数の液室が設けら
れ、該複数の液室は前記防振基体によって軸方向におけ
る両側の隔壁が構成されており、各液室内にはそれぞ
れ、内外筒間の径方向における変位を規制するストッパ
が設けられ、該ストッパが、前記外筒側から径方向に突
出したストッパ突部と、該ストッパ突部に対向して前記
内筒側に設けられたストッパゴム部とで構成されたもの
である。The vibration-proof bushing of the present invention comprises an inner cylinder, an outer cylinder concentrically surrounding the inner cylinder, and a rubber elastic member provided between the inner cylinder and the outer cylinder to connect the inner cylinder and the outer cylinder. In a vibration-isolating bush including a vibration-isolating base made of a body, a plurality of liquid chambers that are partitioned in the circumferential direction and communicate with each other by an orifice channel are provided between the inner cylinder and the outer cylinder. In the plurality of liquid chambers, partition walls on both sides in the axial direction are formed by the vibration isolating base, and stoppers for restricting radial displacement between the inner and outer cylinders are provided in the respective liquid chambers, and the stoppers are It is configured by a stopper projection protruding radially from the outer cylinder side and a stopper rubber portion provided on the inner cylinder side so as to face the stopper projection.
【００１３】このように内外筒間の径方向における変位
を規制するストッパを内筒側と外筒側とに分担させて設
けたことにより、こじり入力時におけるストッパの変
位、特にストッパ突部先端の変位量が小さくなって、防
振基体によって構成される隔壁との内部干渉を防止する
ことができる。By thus providing the stopper for restricting the radial displacement between the inner and outer cylinders so as to be shared by the inner cylinder side and the outer cylinder side, the displacement of the stopper at the time of prying input, particularly the tip of the stopper protrusion, The amount of displacement is reduced, and it is possible to prevent internal interference with the partition wall formed by the vibration-proof base.
【００１４】本発明の防振ブッシュにおいては、前記複
数の液室が前記内筒を挟んで相対向する一対の液室であ
ってもよい。この場合、内筒の径方向に相対する２箇所
から防振基体による一対の隔壁が設けられ、該一対の隔
壁により２つの液室が周方向において仕切られているこ
とが好適である。In the vibration-proof bushing of the present invention, the plurality of liquid chambers may be a pair of liquid chambers facing each other with the inner cylinder interposed therebetween. In this case, it is preferable that a pair of partition walls made of a vibration-isolating base be provided from two locations opposed to each other in the radial direction of the inner cylinder, and the two liquid chambers be partitioned in the circumferential direction by the pair of partition walls.
【００１５】本発明の防振ブッシュにおいて、前記スト
ッパ突部は、先端ほど軸方向寸法が小さくなるように軸
方向における両側面が傾斜してもよい。また、前記スト
ッパゴム部が前記防振基体と一体に設けられており、該
ストッパゴム部の軸方向両側に前記防振基体の前記隔壁
との間で凹部が設けられてもよい。このようにストッパ
突部の軸方向両側面を傾斜させたり、ストッパゴム部の
軸方向両側に凹部を設けることにより、ストッパと防振
基体との内部干渉を一層効果的に防止することができ
る。In the vibration-proof bushing of the present invention, the stopper protrusion may be inclined on both side surfaces in the axial direction such that the tip end has a smaller axial dimension. Further, the stopper rubber portion may be provided integrally with the vibration isolating base, and recesses may be provided on both axial sides of the stopper rubber portion between the partition wall of the vibration isolating base. By thus inclining both axial side surfaces of the stopper protrusion or providing recesses on both axial sides of the stopper rubber portion, it is possible to more effectively prevent internal interference between the stopper and the vibration-proof base.
【００１６】本発明の防振ブッシュにおいては、また、
前記防振基体の軸方向両端面における内筒側の付け根部
分が軸方向内方に向かって凹状に形成されてもよい。こ
れにより、こじり入力時に圧縮歪み率が大きくなる防振
基体の内筒側の付け根部分において、ゴムの自由長を長
くしてゴム表面の圧縮歪み率を小さくすることができ、
上記ストッパによる内部干渉対策と相俟って、こじり入
力に対する優れた耐久性を持つ防振ブッシュが提供され
る。In the vibration damping bush of the present invention,
Inner cylinder-side base portions of both axial end surfaces of the vibration-isolating base may be formed to be concave inward in the axial direction. This makes it possible to lengthen the free length of the rubber and reduce the compressive strain rate of the rubber surface at the root portion of the vibration-isolating base on the inner cylinder side where the compressive strain rate increases at the time of prying input.
The anti-vibration bush having excellent durability against twisting input is provided in combination with the countermeasure against internal interference by the stopper.
【００１７】[0017]
【発明の実施の形態】以下、本発明の１実施形態に係る
防振ブッシュ（10）について図１〜５に基づいて説明す
る。この防振ブッシュ（10）は、図５に示すフロントサ
スペンションのロアアームリンク（１）において後側ブ
ッシュ（３）として用いられるブッシュであり、図５
（ａ）及び（ｂ）に示すように、その軸方向をアームリ
ンク平面に対して垂直に配設する縦置き構造のブッシュ
である。BEST MODE FOR CARRYING OUT THE INVENTION An anti-vibration bush (10) according to one embodiment of the present invention will be described below with reference to FIGS. This anti-vibration bush (10) is a bush used as the rear bush (3) in the lower arm link (1) of the front suspension shown in FIG.
As shown in (a) and (b), it is a bush having a vertical structure in which its axial direction is arranged perpendicular to the arm link plane.
【００１８】防振ブッシュ（10）は、同心的に間隔をお
いて配置された鉄、鋼やアルミニウムあるいはその合金
等の金属製管よりなる内筒（12）および外筒（14）と、
これら内外両筒（12）（14）間に加硫成形により介設さ
れて当該両筒を結合するゴム弾性体からなる防振基体
（16）とを備えてなる。詳細には、本実施形態では、外
筒（14）の内周側に中間筒（18）が設けられ、該中間筒
（18）と内筒（12）が加硫接着手段により防振基体（1
6）に固着され、中間筒（18）の外周に外筒（14）が嵌
着されることで、内筒（12）と外筒（14）とが弾力的に
結合されている。The vibration-proof bush (10) includes an inner cylinder (12) and an outer cylinder (14) which are concentrically arranged at intervals and are made of a metal pipe such as iron, steel, aluminum or an alloy thereof.
A vibration-damping base (16) made of a rubber elastic body, which is interposed between the inner and outer cylinders (12) and (14) by vulcanization molding and connects the both cylinders, is provided. Specifically, in the present embodiment, an intermediate cylinder (18) is provided on the inner peripheral side of the outer cylinder (14), and the intermediate cylinder (18) and the inner cylinder (12) are vulcanized and bonded by a vibration-proof substrate ( 1
The inner cylinder (12) and the outer cylinder (14) are elastically coupled to each other by being fixed to 6) and by fitting the outer cylinder (14) around the outer periphery of the intermediate cylinder (18).
【００１９】図１に示すように、防振基体（16）の軸方
向中央部には空間部が形成されており、この空間部にエ
チレングリコールなどの不凍液が封入されて液室（20）
（22）が設けられている。すなわち、液室（20）（22）
は、防振基体（16）によって軸方向における両側の隔壁
（16ａ）が構成されており、両隔壁（16ａ）間に設けら
れている。As shown in FIG. 1, a space is formed in the center of the vibration-proof substrate (16) in the axial direction, and an antifreeze liquid such as ethylene glycol is enclosed in the space to store the liquid chamber (20).
(22) is provided. That is, the liquid chamber (20) (22)
The partition walls (16a) on both sides in the axial direction are constituted by the vibration isolating base (16), and are provided between both partition walls (16a).
【００２０】図４に示すように、上記液室は周方向にお
いて２室（20）（22）に仕切られており、両者はオリフ
ィス流路（24）により互いに連通されている。詳細に
は、内筒（12）の径方向に相対する２箇所から防振基体
（16）による一対の隔壁（16ｂ）が設けられ、両隔壁
（16ｂ）により、内筒（12）を挟んで相対向する略対称
な２つの液室（20）（22）が仕切り構成されている。こ
れにより、図４においてＡ−Ａ線で示す切断方向では液
共振を持ち、Ｂ−Ｂ線で示す切断方向では液共振のない
構造となっている。As shown in FIG. 4, the liquid chamber is divided into two chambers (20) and (22) in the circumferential direction, and the two chambers are communicated with each other by an orifice channel (24). In detail, a pair of partition walls (16b) formed by the vibration-isolating base (16) are provided from two locations opposed to each other in the radial direction of the inner cylinder (12), and the inner cylinder (12) is sandwiched by both partition walls (16b). Two substantially symmetrical liquid chambers (20, 22) facing each other are configured by partitions. As a result, the structure has liquid resonance in the cutting direction indicated by the line AA in FIG. 4 and no liquid resonance in the cutting direction indicated by the line BB.
【００２１】オリフィス流路（24）は、外筒（14）の内
周側に嵌合されたオリフィス形成部材（26）によって、
その外周に外筒（14）との間で周方向に延びる流路とし
て形成されている。詳細には、本実施形態では一方の液
室（20）から出た液体が外筒（14）の内周側を略２周し
て他方の液室（22）に至るように構成されている。The orifice flow path (24) is formed by an orifice forming member (26) fitted on the inner peripheral side of the outer cylinder (14).
A flow path is formed on the outer circumference of the outer cylinder (14) so as to extend in the circumferential direction. In detail, in this embodiment, the liquid discharged from one of the liquid chambers (20) is configured to reach the other liquid chamber (22) after making two rounds on the inner peripheral side of the outer cylinder (14). .
【００２２】図１に示すように、上記２つの液室（20）
（22）内には、それぞれ、内外筒（12）（14）間の径方
向における過大変位を規制するストッパが設けられてい
る。該ストッパは、外筒（14）側から径方向内方に向か
って突出したストッパ突部（28）と、ストッパ突部（2
8）に対向して内筒（12）側に設けられたストッパゴム
部（30）とで構成されている。As shown in FIG. 1, the above two liquid chambers (20)
Inside the (22), stoppers for restricting excessive radial displacement between the inner and outer cylinders (12, 14) are provided. The stopper includes a stopper protrusion (28) protruding radially inward from the outer cylinder (14) side and a stopper protrusion (2
8) and a stopper rubber portion (30) provided on the inner cylinder (12) side.
【００２３】ストッパ突部（28）は、金属や合成樹脂な
どの剛性のある材料からなり、この実施形態ではオリフ
ィス形成部材（26）に一体に設けられている。ストッパ
突部（28）は、先端ほど軸方向寸法が小さくなるように
軸方向における両側面（28ａ）が傾斜している。詳細に
は、ストッパ突部（28）は、図１に示すように断面略台
形状をなしており、その先端面が相対向するストッパゴ
ム部（30）の当接面に対して略同一の軸方向寸法を持つ
ように設定され、より幅の広いオリフィス側から該先端
面にかけて径方向内方ほど幅が狭くなるように、両側面
（28ａ）が中央に向かって傾斜している。The stopper protrusion (28) is made of a rigid material such as metal or synthetic resin, and is integrally provided with the orifice forming member (26) in this embodiment. The stopper projection (28) is inclined on both side surfaces (28a) in the axial direction so that the axial dimension becomes smaller toward the tip. Specifically, the stopper protrusion (28) has a substantially trapezoidal cross section as shown in FIG. 1, and its tip end surfaces are substantially the same as the contact surfaces of the stopper rubber portions (30) facing each other. Both side surfaces (28a) are inclined toward the center so that the width is narrower inward in the radial direction from the wider orifice side to the tip surface.
【００２４】ストッパゴム部（30）は、ストッパ突部
（28）の先端面に対し径方向内方に所定の隙間をおいて
対向配置されており、この実施形態では、内筒（12）の
外周面に加硫接着手段により固着されている。詳細に
は、防振基体（16）と一体に加硫成形されており、その
軸方向両側に防振基体（16）の隔壁（16ａ）との間で凹
部（32）が設けられている。これにより、ストッパゴム
部（30）は、ストッパ突部（28）に対向して、内筒（1
2）側から径方向外方に向かって突出する凸状に形成さ
れている。The stopper rubber portion (30) is arranged so as to face the tip end surface of the stopper protrusion (28) radially inward with a predetermined gap. In this embodiment, the stopper rubber portion (30) of the inner cylinder (12) is arranged. It is fixed to the outer peripheral surface by vulcanization adhesion means. In detail, it is integrally vulcanized and molded with the vibration-proof base body (16), and recesses (32) are provided on both sides in the axial direction between the vibration-proof base body (16) and the partition wall (16a). As a result, the stopper rubber portion (30) faces the stopper protrusion (28), and the inner cylinder (1
It is formed in a convex shape that protrudes radially outward from the 2) side.
【００２５】図１，３に示すように、防振基体（16）の
軸方向両端面における内筒（12）側の付け根部分（34）
は、軸方向内方に向かって凹状に形成されている。詳細
には、当該付け根部分（34）のゴム表面が、防振基体
（16）の端面の一般面よりも軸方向内方に向かって、な
だらかな湾曲面状に窪んだ形状に形成されており、これ
により、付け根部分（34）のゴム表面における自由長が
長くなるように設定している。As shown in FIGS. 1 and 3, a root portion (34) on the inner cylinder (12) side on both axial end surfaces of the vibration-proof base body (16).
Are formed to be concave inward in the axial direction. Specifically, the rubber surface of the root portion (34) is formed in a shape that is recessed into a gentle curved surface inward in the axial direction with respect to the general surface of the end surface of the vibration-isolating base (16). By doing so, the free length of the rubber surface of the root portion (34) is set to be long.
【００２６】以上よりなる本実施形態の防振ブッシュ
（10）は、上記したように図５に示すロアアームリンク
（１）の後側ブッシュ装着部（５Ａ）に装着される。そ
して、ボールジョイントに車両前後方向での入力があっ
たときには、内外筒（12）（14）間の圧縮方向における
入力を受け、液共振による振動吸収効果が奏される。ま
た、この圧縮方向の変位として過大変位が入力されたと
きには、ストッパ突部（28）がストッパゴム部（30）に
当接することで当該過大変位が規制される。The anti-vibration bush (10) of this embodiment having the above structure is mounted on the rear bush mounting portion (5A) of the lower arm link (1) shown in FIG. 5, as described above. When the ball joint receives an input in the vehicle front-rear direction, it receives an input in the compression direction between the inner and outer cylinders (12) and (14), and a vibration absorbing effect due to liquid resonance is exhibited. Further, when an excessive displacement is input as the displacement in the compression direction, the stopper protrusion (28) contacts the stopper rubber portion (30) to restrict the excessive displacement.
【００２７】一方、ボールジョイントに車両上下方向で
の入力があったときには、内筒（12）が不図示のクロス
メンバーに固定されているブッシュ（10）は、図１，２
に示すように、こじり方向での入力、即ち内筒（12）の
軸（12ａ）に対して外筒（14）の軸（14ａ）を軸方向の
中間位置を中心（Ｏ）として回転させるような入力を受
ける。このようなこじり方向での入力があった場合で
も、本実施形態の防振ブッシュ（10）であると、上記ス
トッパを外筒側のストッパ突部（28）と内筒側のストッ
パゴム部（30）とに分けて設けたことにより、図２に示
すように、ストッパ突部（28）先端の変位量が小さく、
防振基体（16）の隔壁（16ａ）との内部干渉を防止する
ことができる。しかも、ストッパ突部（28）の両側面
（28ａ）を上記のように傾斜させ、更にストッパゴム部
（30）の両側に凹部（32）を設けたことにより、かかる
内部干渉が一層効果的に防止される。On the other hand, when the ball joint receives an input in the vertical direction of the vehicle, the bush (10) whose inner cylinder (12) is fixed to a cross member (not shown) is shown in FIGS.
As shown in Fig. 4, the input in the twisting direction, that is, the shaft (14a) of the outer cylinder (14) is rotated with respect to the shaft (12a) of the inner cylinder (12) about an intermediate position in the axial direction (O). Receive input. Even if there is such an input in the twisting direction, the anti-vibration bush (10) of the present embodiment allows the stopper to function as the stopper protrusion (28) on the outer cylinder side and the stopper rubber portion (on the inner cylinder side). As shown in FIG. 2, the displacement amount of the tip of the stopper protrusion (28) is small,
It is possible to prevent internal interference with the partition wall (16a) of the vibration-proof substrate (16). Moreover, since both side surfaces (28a) of the stopper protrusion (28) are inclined as described above and the recesses (32) are provided on both sides of the stopper rubber portion (30), such internal interference is more effective. To be prevented.
【００２８】また、本実施形態の防振ブッシュ（10）で
あると、ストッパゴム部（30）を内筒（12）側に設けた
ことにより、当該ゴム部（30）を防振基体（16）と一体
に加硫成形することができ、コストアップを抑えること
ができる。Further, in the vibration-proof bush (10) of this embodiment, since the stopper rubber portion (30) is provided on the inner cylinder (12) side, the rubber portion (30) is attached to the vibration-proof substrate (16). ) Can be integrally vulcanized and molded, and the cost increase can be suppressed.
【００２９】また、防振基体（16）の軸方向両端面にお
ける内筒（12）側の付け根部分（34）を凹状に窪み形成
したことにより、こじり入力時に圧縮歪み率が大きくな
る当該付け根部分（34）において、ゴムの自由長を長く
してゴム表面の圧縮歪み率を小さくすることができ、こ
じり入力に対する耐久性を向上することができる。In addition, since the root portion (34) on the inner cylinder (12) side on both axial ends of the vibration-proof base body (16) is concavely formed, the root portion where the compression strain rate becomes large at the time of prying input In (34), the free length of the rubber can be increased to reduce the compressive strain rate on the rubber surface, and the durability against prying force can be improved.
【００３０】以上より、本実施形態によれば、ブッシュ
自体を大型化することなく、縦置き構造の液封入式防振
ブッシュとして優れたこじり耐久性を持つ防振ブッシュ
が得られる。As described above, according to this embodiment, it is possible to obtain a vibration-proof bush having excellent twisting durability as a liquid-filled type vibration-proof bush having a vertical structure without increasing the size of the bush itself.
【００３１】[0031]
【発明の効果】本発明の防振ブッシュであると、内外筒
間の径方向における変位を規制するストッパを内筒側と
外筒側とに分担させて設けたことにより、こじり入力時
におけるストッパの変位量が小さくなって、防振基体と
の内部干渉を防止することができ、こじり入力に対する
耐久性を向上することができる。According to the vibration-proof bushing of the present invention, since the stopper for restricting the radial displacement between the inner and outer cylinders is provided by the inner cylinder side and the outer cylinder side, the stopper at the time of prying input is provided. The amount of displacement can be reduced, internal interference with the vibration-proof substrate can be prevented, and durability against prying input can be improved.
【図１】本発明の１実施形態に係る防振ブッシュの断面
図（図４のＡ−Ａ線断面図）である。FIG. 1 is a cross-sectional view (cross-sectional view taken along the line AA of FIG. 4) of a vibration damping bush according to an embodiment of the present invention.
【図２】同防振ブッシュのこじり入力時における断面図
である。FIG. 2 is a cross-sectional view of the vibration-isolating bush when a twist is input.
【図３】同防振ブッシュの断面図（図４のＢ−Ｂ線断面
図）である。FIG. 3 is a cross-sectional view (cross-sectional view taken along the line BB of FIG. 4) of the vibration-proof bush.
【図４】同防振ブッシュの断面図（図１のＣ−Ｃ線断面
図）である。FIG. 4 is a cross-sectional view (cross-sectional view taken along the line CC of FIG. 1) of the same vibration-proof bushing.
【図５】（ａ）はフロントサスペンションのロアアーム
リンクの平面図、（ｂ）はその側面図である。5A is a plan view of a lower arm link of a front suspension, and FIG. 5B is a side view thereof.
【図６】従来の防振ブッシュの断面図である。FIG. 6 is a cross-sectional view of a conventional vibration damping bush.
【図７】従来の防振ブッシュのこじり入力時の断面図で
ある。FIG. 7 is a cross-sectional view of a conventional vibration-proof bush when twisting is input.
（10）防振ブッシュ （12）内筒 （14）外筒 （16）防振基体 （16ａ）防振基体の隔壁 （20）（22）液室 （24）オリフィス流路 （28）ストッパ突部 （28ａ）ストッパ突部の側面 （30）ストッパゴム部 （32）凹部 （34）防振基体の内筒側付け根部分 (10) Anti-vibration bush (12) Inner cylinder (14) Outer cylinder (16) Anti-vibration substrate (16a) Partition wall of vibration-proof substrate (20) (22) Liquid chamber (24) Orifice flow path (28) Stopper protrusion (28a) Side surface of stopper protrusion (30) Rubber stopper (32) Recess (34) Inner cylinder side root of vibration-proof base
───────────────────────────────────────────────────── フロントページの続き (72)発明者 ▲ただ▼野 秀夫 大阪府大阪市西区江戸堀１丁目17番18号 東洋ゴム工業株式会社内 (72)発明者 長谷部 豊 神奈川県横浜市神奈川区宝町２番地 日産 自動車株式会社内 Ｆターム(参考） 3D001 AA19 BA01 CA01 DA08 DA13 3J047 AA05 CA02 CD07 FA04 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor ▲ Just ▼ Hideo No 1-17-18 Edobori, Nishi-ku, Osaka City, Osaka Prefecture Toyo Tire & Rubber Co., Ltd. (72) Inventor Yutaka Hasebe Nissan, Takaracho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan Inside the automobile corporation F-term (reference) 3D001 AA19 BA01 CA01 DA08 DA13 3J047 AA05 CA02 CD07 FA04
Claims (5)
と、内筒と外筒の間に設けられて両者を結合するゴム弾
性体からなる防振基体と、を備える防振ブッシュにおい
て、 前記の内筒と外筒の間には、周方向において仕切られて
オリフィス流路により互いに連通された複数の液室が設
けられ、該複数の液室は前記防振基体によって軸方向に
おける両側の隔壁が構成されており、 各液室内にはそれぞれ、内外筒間の径方向における変位
を規制するストッパが設けられ、該ストッパが、前記外
筒側から径方向に突出したストッパ突部と、該ストッパ
突部に対向して前記内筒側に設けられたストッパゴム部
とで構成されたことを特徴とする防振ブッシュ。1. An anti-vibration system comprising an inner cylinder, an outer cylinder concentrically surrounding the inner cylinder, and a vibration-damping base body provided between the inner cylinder and the outer cylinder and made of a rubber elastic body for connecting the two. In the bush, a plurality of liquid chambers, which are partitioned in the circumferential direction and communicate with each other by an orifice channel, are provided between the inner cylinder and the outer cylinder, and the plurality of liquid chambers are axially arranged by the vibration isolation base body. Partition walls on both sides of the outer cylinder are formed, and stoppers for restricting radial displacement between the inner and outer cylinders are provided in the respective liquid chambers, and the stopper protrusions project radially from the outer cylinder side. And a stopper rubber portion provided on the inner cylinder side facing the stopper protrusion.
する一対の液室からなることを特徴とする請求項１記載
の防振ブッシュ。2. The vibration-isolating bush according to claim 1, wherein the plurality of liquid chambers are a pair of liquid chambers facing each other with the inner cylinder interposed therebetween.
が小さくなるように軸方向における両側面が傾斜してい
る請求項１又は２記載の防振ブッシュ。3. The anti-vibration bush according to claim 1, wherein both side surfaces in the axial direction of the stopper protrusion are inclined so that the axial dimension becomes smaller toward the tip.
に設けられており、該ストッパゴム部の軸方向両側に前
記防振基体の前記隔壁との間で凹部が設けられたことを
特徴とする請求項１〜３のいずれかに記載の防振ブッシ
ュ。4. The stopper rubber portion is provided integrally with the vibration isolating base, and recesses are provided on both axial sides of the stopper rubber portion between the partition wall of the vibration isolating base. The vibration-proof bush according to any one of claims 1 to 3.
側の付け根部分が軸方向内方に向かって凹状に形成され
たことを特徴とする請求項１〜４のいずれかに記載の防
振ブッシュ。5. The inner cylinder side root portion of each of the axial end faces of the vibration-proof substrate is formed to be concave inward in the axial direction. Anti-vibration bush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001287672A JP4011877B2 (en) | 2001-09-20 | 2001-09-20 | Arm link structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001287672A JP4011877B2 (en) | 2001-09-20 | 2001-09-20 | Arm link structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003097630A true JP2003097630A (en) | 2003-04-03 |
| JP4011877B2 JP4011877B2 (en) | 2007-11-21 |
Family
ID=19110443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001287672A Expired - Fee Related JP4011877B2 (en) | 2001-09-20 | 2001-09-20 | Arm link structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4011877B2 (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008151189A (en) * | 2006-12-14 | 2008-07-03 | Toyo Tire & Rubber Co Ltd | Liquid filled vibration isolator |
| JP2008215402A (en) * | 2007-02-28 | 2008-09-18 | Kurashiki Kako Co Ltd | Rubber bushing and its manufacturing method |
| CN107640175A (en) * | 2017-11-06 | 2018-01-30 | 株洲时代新材料科技股份有限公司 | The adjusting method and structure of empty real phase axle box guidance joint rigidity and variation rigidity |
| KR20180070113A (en) * | 2016-12-16 | 2018-06-26 | 현대자동차주식회사 | Hydraulic bush |
| CN110345193A (en) * | 2019-08-30 | 2019-10-18 | 株洲时代新材料科技股份有限公司 | A kind of forming method and node with outer groove runner liquid rubber composite node |
| CN110388401A (en) * | 2019-08-30 | 2019-10-29 | 株洲时代新材料科技股份有限公司 | A kind of forming method and node with tube body runner liquid rubber composite node |
| CN110397700A (en) * | 2019-08-30 | 2019-11-01 | 株洲时代新材料科技股份有限公司 | The method and cavity structure of liquid cavity are formed by adding spacer sleeve in fFour piece type |
| CN110425248A (en) * | 2019-08-30 | 2019-11-08 | 株洲时代新材料科技股份有限公司 | A kind of forming method and node with inside groove runner liquid rubber composite node |
| CN110454537A (en) * | 2019-08-30 | 2019-11-15 | 株洲时代新材料科技股份有限公司 | A kind of split-type liquid rubber composite node stiffness tuning structure and method |
| CN110469623A (en) * | 2019-08-30 | 2019-11-19 | 株洲时代新材料科技股份有限公司 | A kind of forming method and node of the liquid rubber composite node of band damping through-hole |
| CN110486413A (en) * | 2019-08-30 | 2019-11-22 | 株洲时代新材料科技股份有限公司 | A method of liquid cavity is formed by adding spacer sleeve in multi-clove type |
| CN110486412A (en) * | 2019-08-30 | 2019-11-22 | 株洲时代新材料科技股份有限公司 | A kind of the radial rigidity adjusting method and structure of liquid rubber composite node |
| CN110500377A (en) * | 2019-08-30 | 2019-11-26 | 株洲时代新材料科技股份有限公司 | A kind of the node runner forming method and flow passage structure of liquid rubber composite node |
| CN110500376A (en) * | 2019-08-30 | 2019-11-26 | 株洲时代新材料科技股份有限公司 | A method of liquid cavity is formed by adding spacer sleeve in monoblock type |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018200346A1 (en) * | 2018-01-11 | 2019-07-11 | Contitech Luftfedersysteme Gmbh | Hydraulic bearing bush |
| DE102018200344A1 (en) * | 2018-01-11 | 2019-07-11 | Contitech Luftfedersysteme Gmbh | Hydraulic bearing bush |
-
2001
- 2001-09-20 JP JP2001287672A patent/JP4011877B2/en not_active Expired - Fee Related
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008151189A (en) * | 2006-12-14 | 2008-07-03 | Toyo Tire & Rubber Co Ltd | Liquid filled vibration isolator |
| JP2008215402A (en) * | 2007-02-28 | 2008-09-18 | Kurashiki Kako Co Ltd | Rubber bushing and its manufacturing method |
| KR20180070113A (en) * | 2016-12-16 | 2018-06-26 | 현대자동차주식회사 | Hydraulic bush |
| KR102429049B1 (en) | 2016-12-16 | 2022-08-04 | 현대자동차주식회사 | Hydraulic bush |
| CN107640175A (en) * | 2017-11-06 | 2018-01-30 | 株洲时代新材料科技股份有限公司 | The adjusting method and structure of empty real phase axle box guidance joint rigidity and variation rigidity |
| CN107640175B (en) * | 2017-11-06 | 2023-08-25 | 株洲时代瑞唯减振装备有限公司 | Rigidity and rigidity-variable adjusting method and structure for positioning node of space-solid phase axle box |
| CN110486413A (en) * | 2019-08-30 | 2019-11-22 | 株洲时代新材料科技股份有限公司 | A method of liquid cavity is formed by adding spacer sleeve in multi-clove type |
| CN110500376A (en) * | 2019-08-30 | 2019-11-26 | 株洲时代新材料科技股份有限公司 | A method of liquid cavity is formed by adding spacer sleeve in monoblock type |
| CN110454537A (en) * | 2019-08-30 | 2019-11-15 | 株洲时代新材料科技股份有限公司 | A kind of split-type liquid rubber composite node stiffness tuning structure and method |
| CN110469623A (en) * | 2019-08-30 | 2019-11-19 | 株洲时代新材料科技股份有限公司 | A kind of forming method and node of the liquid rubber composite node of band damping through-hole |
| CN110397700A (en) * | 2019-08-30 | 2019-11-01 | 株洲时代新材料科技股份有限公司 | The method and cavity structure of liquid cavity are formed by adding spacer sleeve in fFour piece type |
| CN110486412A (en) * | 2019-08-30 | 2019-11-22 | 株洲时代新材料科技股份有限公司 | A kind of the radial rigidity adjusting method and structure of liquid rubber composite node |
| CN110500377A (en) * | 2019-08-30 | 2019-11-26 | 株洲时代新材料科技股份有限公司 | A kind of the node runner forming method and flow passage structure of liquid rubber composite node |
| CN110425248A (en) * | 2019-08-30 | 2019-11-08 | 株洲时代新材料科技股份有限公司 | A kind of forming method and node with inside groove runner liquid rubber composite node |
| WO2021036866A1 (en) * | 2019-08-30 | 2021-03-04 | 株洲时代瑞唯减振装备有限公司 | Method for forming liquid rubber composite node having pipe flow channel |
| CN110425248B (en) * | 2019-08-30 | 2021-10-26 | 株洲时代瑞唯减振装备有限公司 | Forming method of liquid rubber composite node with internal groove runner and node |
| CN110388401A (en) * | 2019-08-30 | 2019-10-29 | 株洲时代新材料科技股份有限公司 | A kind of forming method and node with tube body runner liquid rubber composite node |
| US11661990B2 (en) | 2019-08-30 | 2023-05-30 | Zhuzhou Times Ruiwei Anti-Viberation Equipment Limited | Formation method for liquid rubber composite nodes with tubular flow channel |
| CN110345193A (en) * | 2019-08-30 | 2019-10-18 | 株洲时代新材料科技股份有限公司 | A kind of forming method and node with outer groove runner liquid rubber composite node |
| CN110345193B (en) * | 2019-08-30 | 2024-06-07 | 株洲时代瑞唯减振装备有限公司 | Forming method of liquid rubber composite node with external groove runner and node |
| CN110397700B (en) * | 2019-08-30 | 2024-06-07 | 株洲时代瑞唯减振装备有限公司 | Method for forming liquid cavity by additionally arranging four-petal type middle spacer bush and cavity structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4011877B2 (en) | 2007-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2003097630A (en) | Vibration-proof bush | |
| US7275738B2 (en) | Cylindrical fluid-filled vibration damping device | |
| KR101633041B1 (en) | External shear-hub isolator | |
| JPH08193639A (en) | Fluid-filled vibration isolating bush | |
| KR102484894B1 (en) | Hydraulic mount for vehicle | |
| US20150276010A1 (en) | Vibration damping device | |
| JP2010159873A (en) | Cylindrical vibration isolating device of fluid encapsulation type | |
| JPH0229898B2 (en) | ||
| JP6889585B2 (en) | Fluid-filled tubular anti-vibration device | |
| JP4171182B2 (en) | Engine mount | |
| JPS6361535B2 (en) | ||
| KR20190043440A (en) | Hydraulic engine mounting device | |
| JPH03277845A (en) | Fluid sealed bush | |
| JP3705715B2 (en) | Fluid filled cylindrical mount | |
| JP4124973B2 (en) | Fluid filled toe collect bush and suspension mechanism using the same | |
| JP4187153B2 (en) | Liquid-filled vibration isolator | |
| KR20170040594A (en) | Structure of air damping mount | |
| JPH0369015B2 (en) | ||
| JP7527258B2 (en) | Multiple types of cylindrical vibration isolation devices with brackets | |
| JP2005009629A (en) | Vibration-proof device | |
| JP2008111558A (en) | Fluid filled system toe correct bush and suspension mechanism using it | |
| JP2005009628A (en) | Vibration isolator | |
| JP2000081066A (en) | Vibration isolating device | |
| JPH05164183A (en) | Bush type vibration proof device | |
| JP2005009627A (en) | Vibration isolator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20030724 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20060421 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060425 |
|
| RD03 | Notification of appointment of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7423 Effective date: 20060525 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20060613 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A821 Effective date: 20060525 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20070327 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20070515 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20070828 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20070906 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 4011877 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100914 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100914 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110914 Year of fee payment: 4 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120914 Year of fee payment: 5 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130914 Year of fee payment: 6 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |