JPH08114246A - Vibration isolating bushing - Google Patents
Vibration isolating bushingInfo
- Publication number
- JPH08114246A JPH08114246A JP27427094A JP27427094A JPH08114246A JP H08114246 A JPH08114246 A JP H08114246A JP 27427094 A JP27427094 A JP 27427094A JP 27427094 A JP27427094 A JP 27427094A JP H08114246 A JPH08114246 A JP H08114246A
- Authority
- JP
- Japan
- Prior art keywords
- stopper
- elastic member
- peripheral side
- outer peripheral
- elastic
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
- B60G2204/41—Elastic mounts, e.g. bushings
- B60G2204/4104—Bushings having modified rigidity in particular directions
- B60G2204/41042—Bushings having modified rigidity in particular directions by using internal cam surfaces
Landscapes
- Vehicle Body Suspensions (AREA)
- Combined Devices Of Dampers And Springs (AREA)
- Springs (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、防振技術に係る防振ブ
ッシュに関する。本発明の防振ブッシュは主に、自動車
の懸架装置におけるサスペンションブッシュとして用い
られる。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration bush related to anti-vibration technology. The anti-vibration bush of the present invention is mainly used as a suspension bush in an automobile suspension system.
【０００２】[0002]
【従来の技術】図４に示すように、自動車の懸架装置２
１には、矢示するところにサスペンションブッシュが装
着されており、図５に示すように、従来のサスペンショ
ンブッシュにおいては、内筒２２と外筒２３が径方向に
相対変位したときに当接作動するゴム状弾性材製の弾性
部材を備えたストッパ２４が、前後方向（Ｐ方向）に荷
重入力があった場合に作動するもの２４ａ，２４ｂと、
上下方向（Ｑ方向）に荷重入力があった場合に作動する
もの２４ｃ，２４ｄとに分けて設けられている（実開平
４−１０７５３９号公報参照）。前後方向（Ｐ方向）の
入力荷重の大きさと上下方向（Ｑ方向）の入力荷重の大
きさを比較すると、構造上、前者の方が一般に大きいも
のである。2. Description of the Related Art As shown in FIG.
1, a suspension bush is attached at the position indicated by the arrow. As shown in FIG. 5, in the conventional suspension bush, the contact operation is performed when the inner cylinder 22 and the outer cylinder 23 are displaced relative to each other in the radial direction. Stoppers 24 provided with elastic members made of rubber-like elastic material that operate when a load is input in the front-rear direction (P direction);
They are provided separately as those 24c and 24d which are activated when a load is input in the vertical direction (Q direction) (see Japanese Utility Model Laid-Open No. 4-107539). Comparing the magnitude of the input load in the front-back direction (P direction) and the magnitude of the input load in the vertical direction (Q direction), the former is generally larger in structure.
【０００３】したがって、この従来のブッシュにおいて
は、前後方向（Ｐ方向）に荷重入力があった場合に、ス
トッパ２４の一部２４ａ，２４ｂの弾性部材のみが大き
な入力荷重を受けて繰り返し圧縮されることになるため
に、これを原因としてストッパ２４の耐久性が良くない
問題がある。Therefore, in this conventional bush, when a load is input in the front-rear direction (P direction), only the elastic members of the portions 24a and 24b of the stopper 24 receive a large input load and are repeatedly compressed. Therefore, there is a problem that the durability of the stopper 24 is not good due to this.
【０００４】そこで、図６に示すように、ストッパ２４
をブッシュタイプとして環状の弾性部材全体に応力が発
生するようにし、更に弾性部材に予圧縮を与えて、これ
により弾性部材の耐久性を向上させることが考えられ
る。Therefore, as shown in FIG.
It is conceivable that a bush type is used to generate stress in the entire annular elastic member, and further pre-compression is applied to the elastic member, thereby improving the durability of the elastic member.
【０００５】すなわち、このストッパ２４においては、
内筒の外周側に配置される環状のストッパ組立体（スト
ッパアッセンブリとも称する）２５が備えられており、
このストッパ組立体２５が、内筒の外周側に固定される
ストッパリング２６と、ストッパリング２６の外周側に
接着された環状を呈するゴム状弾性材製の弾性部材２７
と、弾性部材２７の外周側に接着された環状のスリーブ
２８と、スリーブ２８の外周側に所定の締め代をもって
嵌着されたアウターリング２９と、を備えている。そし
て、これらの部品のうち、弾性部材２７を加硫成形する
のと同時にこれをストッパリング２６およびスリーブ２
８に加硫接着し、これによりこの三部品２６，２７，２
８よりなる三層構造のブッシュを成形する。次いで、こ
のブッシュのスリーブ２８の外周側にアウターリング２
９を嵌着するが、この嵌着に大きな締め代を設定し、嵌
着と同時にスリーブ２８を縮径させて弾性部材２７を径
方向に圧縮し、これにより弾性部材２７に予圧縮を与え
て弾性部材２７の耐久性を向上させる。That is, in this stopper 24,
An annular stopper assembly (also referred to as a stopper assembly) 25 arranged on the outer peripheral side of the inner cylinder is provided,
The stopper assembly 25 includes a stopper ring 26 fixed to the outer peripheral side of the inner cylinder and an elastic member 27 made of a rubber-like elastic material and having an annular shape bonded to the outer peripheral side of the stopper ring 26.
An annular sleeve 28 adhered to the outer peripheral side of the elastic member 27, and an outer ring 29 fitted to the outer peripheral side of the sleeve 28 with a predetermined interference. Of these parts, the elastic member 27 is vulcanized and formed at the same time as the stopper ring 26 and the sleeve 2.
It is vulcanized and bonded to No. 8 so that these three parts 26, 27, 2
A bush having a three-layer structure of 8 is molded. Then, the outer ring 2 is attached to the outer peripheral side of the sleeve 28 of the bush.
9 is fitted, but a large interference is set for this fitting, and at the same time as fitting, the sleeve 28 is reduced in diameter to compress the elastic member 27 in the radial direction, thereby pre-compressing the elastic member 27. The durability of the elastic member 27 is improved.
【０００６】しかしながら、このような方法によって、
全周に亙って万遍なく弾性部材２７の圧縮率を高めた場
合には、図７に示すように、前後方向（Ｐ方向）から荷
重入力Ｆがあったときに、弾性部材２７が局部的に過度
に圧縮されることになるために、弾性部材２７に亀裂３
０が発生することがあり、これを原因として、返って弾
性部材２７の耐久性が劣化する虞がある。However, by such a method,
When the compressibility of the elastic member 27 is uniformly increased over the entire circumference, as shown in FIG. 7, when the load input F is applied from the front-rear direction (P direction), the elastic member 27 is locally deformed. The elastic member 27 is cracked because it is excessively compressed.
0 may occur, which may cause the durability of the elastic member 27 to deteriorate.
【０００７】[0007]
【発明が解決しようとする課題】本発明は以上の点に鑑
み、前後方向（Ｐ方向）から荷重入力があったときに弾
性部材が局部的に過度に圧縮されることがなく、もって
ストッパの耐久性を向上させることが可能な防振ブッシ
ュを提供することを目的とする。SUMMARY OF THE INVENTION In view of the above points, the present invention prevents the elastic member from being locally excessively compressed when a load is input from the front-rear direction (P direction), so that the stopper member can be used. It is an object of the present invention to provide a vibration-proof bushing capable of improving durability.
【０００８】[0008]
【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による防振ブッシュは、内筒と外
筒をゴム状弾性材製の弾性体を介して接続し、前記両筒
が径方向に相対変位したときに当接作動するストッパを
設けた防振ブッシュにおいて、前記ストッパが、前記内
筒の外周側に配置された環状のストッパ組立体を備えて
おり、前記ストッパ組立体が、前記内筒の外周側に固定
されたストッパリングと、前記ストッパリングの外周側
に接着されたゴム状弾性材製の弾性部材と、前記弾性部
材の外周側に接着され、所要数が円周方向に並べられた
バッファプレートと、前記バッファプレートの外周側に
所定の締め代をもって嵌着されたアウターリングと、を
備えており、前記バッファプレートの外周側に前記アウ
ターリングを嵌着する以前の状態において、前記弾性部
材の一の径方向の肉厚が、前記一の径方向と略直交する
他の径方向の肉厚より大きく設定されていることにし
た。In order to achieve the above object, a vibration-proof bushing according to claim 1 of the present invention is characterized in that an inner cylinder and an outer cylinder are connected via an elastic body made of a rubber-like elastic material. A vibration-isolating bush provided with a stopper that abuts when the cylinder is relatively displaced in the radial direction, wherein the stopper includes an annular stopper assembly arranged on the outer peripheral side of the inner cylinder. The solid body is a stopper ring fixed to the outer peripheral side of the inner cylinder, an elastic member made of a rubber-like elastic material adhered to the outer peripheral side of the stopper ring, and an outer peripheral side of the elastic member. A buffer plate arranged in a circumferential direction and an outer ring fitted to the outer peripheral side of the buffer plate with a predetermined tightening margin are provided, and the outer ring is fitted to the outer peripheral side of the buffer plate. In previous state, the thickness of one radial direction of the elastic member, and that is larger than the thickness of the other radial direction substantially perpendicular to the radial direction of the one.
【０００９】また本発明の請求項２による防振ブッシュ
は、請求項１の防振ブッシュにおいて、弾性体の内側に
液室が設けられ、前記液室内にストッパが配置されると
ともに作動液が封入されていることをにした。According to a second aspect of the present invention, there is provided the vibration damping bush according to the first aspect, wherein the liquid chamber is provided inside the elastic body, the stopper is arranged in the liquid chamber, and the working fluid is enclosed. I decided to do what is being done.
【００１０】[0010]
【作用】上記構成を備えた本発明の請求項１による防振
ブッシュにおいては、ストッパ組立体の弾性部材に予圧
縮を与える以前の状態、すなわちバッファプレートの外
周側にアウターリングを嵌着する以前の状態において、
弾性部材の一の径方向の肉厚が、この一の径方向と略直
交する他の径方向の肉厚より大きく設定されている。し
たがって、この弾性部材に予圧縮を与え、すなわちバッ
ファプレートの外周側に所定の締め代をもってアウター
リングを嵌着すると、弾性部材が全周に亙って均一な径
方向幅となるまで径方向に圧縮されるために、一の径方
向における圧縮率が、この一の径方向と略直交する他の
径方向における圧縮率より大きくなる。そして、この一
の径方向を上下方向（Ｑ方向）、他の径方向を前後方向
（Ｐ方向）に合致させるように当該ブッシュを懸架装置
に装着すると、上下方向（Ｑ方向）において弾性部材が
比較的硬くて、前後方向（Ｐ方向）についての圧縮率を
大きくしなくても、前後方向（Ｐ方向）に対して大きな
保持力を発揮する。したがって前後方向（Ｐ方向）につ
いての圧縮率が比較的小さなこの弾性部材に対して、前
後方向（Ｐ方向）から荷重入力が作用することになるた
めに、弾性部材が局部的に過度に圧縮されるのを防止す
ることが可能となる。尚、上下方向（Ｑ方向）について
は、弾性部材の圧縮率を大きくしても、もともとこの方
向には大きな荷重が入力することが少ないために、弾性
部材が局部的に過度に圧縮されるという状態は、実質
上、発生しないものである。In the vibration-damping bush according to claim 1 of the present invention having the above-described structure, the elastic member of the stopper assembly is in a state before being pre-compressed, that is, before the outer ring is fitted on the outer peripheral side of the buffer plate. In the state of
The radial thickness of one of the elastic members is set to be larger than the radial thickness of another elastic member substantially orthogonal to the radial direction. Therefore, when the elastic member is pre-compressed, that is, when the outer ring is fitted to the outer peripheral side of the buffer plate with a predetermined tightening margin, the elastic member has a uniform radial width over the entire circumference in the radial direction. Since it is compressed, the compression rate in one radial direction becomes greater than the compression rate in another radial direction substantially orthogonal to this one radial direction. Then, when the bush is attached to the suspension device so that the one radial direction is aligned with the vertical direction (Q direction) and the other radial direction is aligned with the front-back direction (P direction), the elastic member is moved in the vertical direction (Q direction). It is relatively hard and exerts a large holding force in the front-rear direction (P direction) without increasing the compression rate in the front-rear direction (P direction). Therefore, since a load input acts from the front-rear direction (P direction) to this elastic member having a relatively small compression rate in the front-rear direction (P direction), the elastic member is locally excessively compressed. It is possible to prevent this. In the vertical direction (Q direction), even if the compression rate of the elastic member is increased, a large load is not originally input in this direction, so that the elastic member is locally excessively compressed. A condition is one that practically does not occur.
【００１１】請求項２は、本発明が液体封入式の防振ブ
ッシュに適用される旨を示したものである。A second aspect of the present invention shows that the present invention is applied to a liquid-filled type vibration damping bush.
【００１２】[0012]
【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。Embodiments of the present invention will now be described with reference to the drawings.
【００１３】図１および図２に示すように、共に剛材製
の内筒１と外筒２がゴム状弾性材製の弾性体３を介して
接続されており、この両筒１，２の間に、両筒１，２が
径方向に相対変位したときに当接作動するストッパ５が
設けられている。As shown in FIGS. 1 and 2, both an inner cylinder 1 and an outer cylinder 2 made of a rigid material are connected via an elastic body 3 made of a rubber-like elastic material. A stopper 5 is provided between the two cylinders 1 and 2 to come into contact with each other when the cylinders 1 and 2 are relatively displaced in the radial direction.
【００１４】内筒１および弾性体３はそれぞれ軸方向に
二分割されており、内筒１の分割体１ａおよび剛材製の
外環４に対してそれぞれ、弾性体３の分割体３ａが加硫
接着されている。そして、この内筒１の分割体１ａ、外
環４および弾性体３の分割体３ａよりなる加硫成形品が
二組、ストッパ５を間に挾んで、軸方向に拝み合わせに
並べられ、内筒１の各分割体１ａの軸方向端部に設けら
れた環状段部１ｂにストッパ５のストッパリング８が嵌
着されることにより、内筒１の分割体１ａ同士が一体化
されるとともに、一対の外環４の外周側に外筒２が嵌着
されてその軸方向端部がカシメられることにより、外環
４同士および弾性体３同士が一体化されている。The inner cylinder 1 and the elastic body 3 are each divided into two in the axial direction, and the divided body 3a of the elastic body 3 is added to the divided body 1a of the inner cylinder 1 and the outer ring 4 made of a rigid material. Sulfurized and bonded. Then, two sets of vulcanized molded products composed of the divided body 1a of the inner cylinder 1, the outer ring 4 and the divided body 3a of the elastic body 3 are sandwiched between the stoppers 5 and are arranged side by side in the axial direction. By fitting the stopper ring 8 of the stopper 5 to the annular step portion 1b provided at the axial end portion of each divided body 1a of the cylinder 1, the divided bodies 1a of the inner cylinder 1 are integrated with each other, and The outer cylinder 2 is fitted on the outer peripheral side of the pair of outer rings 4 and the axial ends thereof are crimped, whereby the outer rings 4 and the elastic bodies 3 are integrated.
【００１５】ストッパ５は、内筒１の外周側に配置され
た環状のストッパ組立体（ストッパアッセンブリとも称
する）６と、外筒２の内周側に１８０度変位して設けら
れた一対の内向き（径方向内方向き）凸部７と、を備え
ており、それぞれ、以下のように構成されている。The stopper 5 includes an annular stopper assembly (also referred to as a stopper assembly) 6 arranged on the outer peripheral side of the inner cylinder 1 and a pair of inner stoppers provided on the inner peripheral side of the outer cylinder 2 and displaced by 180 degrees. Oriented (radially inward) convex portions 7 are provided, and each is configured as follows.
【００１６】すなわち、ストッパ組立体６は、内筒１の
外周側に嵌着された剛材製のストッパリング８と、この
ストッパリング８の外周側に接着され、円周方向に四分
割されたゴム状弾性材製の弾性部材９と、四枚１０ａ，
１０ｂ，１０ｃ，１０ｄが円周方向に並べられ、それぞ
れが図２の方向から見て略９０度の円弧形を呈し、それ
ぞれが弾性部材９の分割体９ａ，９ｂ，９ｃ，９ｄに対
応してその外周側に接着された剛材製のバッファプレー
ト１０と、この四枚のバッファプレート１０の外周側に
所定の締め代をもって嵌着された剛材製のアウターリン
グ１１と、を備えている。そして、このストッパ組立体
６を製造するに際して、弾性部材９を加硫成形するのと
同時にこれをストッパリング８および各バッファプレー
ト１０に加硫接着し、これにより一つの加硫成形品を成
形するが、この加硫成形品を成形するに際して、図３
（Ａ）に示すように、図上上下に位置する一対の弾性部
材９の分割体９ａ，９ｂの肉厚ｔ1 を、図上左右に位置
する他の一対の弾性部材９の分割体９ｃ，９ｄの肉厚ｔ
2 より大きく設定し、図３（Ｂ）または図２に示すよう
に、弾性部材９に予圧縮を与え、すなわちバッファプレ
ート１０の外周側にアウターリング１１を所定の締め代
をもって同心的に嵌着した状態で、図上上下に位置する
一対の分割体９ａ，９ｂの圧縮率を図上左右に位置する
他の一対の分割体９ｃ，９ｄの圧縮率より大きくする。
またこの状態で、円周方向に並べられた弾性部材９の各
分割体９ａ，９ｂ，９ｃ，９ｄの間には、空洞であるす
ぐり部１２が設けられ、このすぐり部１２が設けられて
いることにより、分割体９ａ，９ｂ，９ｃ，９ｄが圧縮
に関して相互に干渉するのが防止されている。That is, the stopper assembly 6 is made of a rigid stopper ring 8 fitted to the outer peripheral side of the inner cylinder 1, and is adhered to the outer peripheral side of the stopper ring 8 to be circumferentially divided into four parts. Elastic member 9 made of rubber-like elastic material, and four sheets 10a,
10b, 10c, 10d are arranged in the circumferential direction, each of which has an arc shape of about 90 degrees when viewed from the direction of FIG. 2, and each corresponds to the divided body 9a, 9b, 9c, 9d of the elastic member 9. A buffer plate 10 made of a rigid material, which is adhered to the outer peripheral side thereof, and an outer ring 11 made of the rigid material, which is fitted to the outer peripheral sides of the four buffer plates 10 with a predetermined tightening margin. . When the stopper assembly 6 is manufactured, the elastic member 9 is vulcanized and molded, and at the same time, the elastic member 9 is vulcanized and bonded to the stopper ring 8 and each buffer plate 10 to form one vulcanized molded product. However, when molding this vulcanized molded product, as shown in FIG.
As shown in (A), the thicknesses t 1 of the divided bodies 9a and 9b of the pair of elastic members 9 located on the upper and lower sides in the figure are the same as the divided bodies 9c of the pair of elastic members 9 located on the left and right in the figure. 9d wall thickness t
2 is set to be larger than 2, and the elastic member 9 is pre-compressed as shown in FIG. 3 (B) or FIG. 2, that is, the outer ring 11 is concentrically fitted to the outer peripheral side of the buffer plate 10 with a predetermined tightening margin. In this state, the compression rate of the pair of divided bodies 9a and 9b located above and below in the figure is made larger than that of the other pair of divided bodies 9c and 9d located on the left and right sides in the figure.
Further, in this state, a hollow cut portion 12 is provided between the divided bodies 9a, 9b, 9c, 9d of the elastic member 9 arranged in the circumferential direction, and the cut portion 12 is provided. This prevents the split bodies 9a, 9b, 9c, 9d from interfering with each other regarding compression.
【００１７】外筒２の内周側に１８０度変位して設けら
れた一対の内向き凸部７はそれぞれ、ゴム状弾性材製の
弾性凸部１３と、この弾性凸部１３内に埋設された剛材
製のストッパプレート１４と、を備えており、弾性凸部
１３の内面がアウターリング１１の外周面と所定の間隙
を介して対向している。弾性凸部１３はアウターリング
１１と同心の円弧形に成形され、ストッパプレート１４
もアウターリング１１と同心の円弧形に成形されてい
る。またこの弾性凸部１３とストッパプレート１４はそ
れぞれ軸方向に二分割されており、特に弾性凸部１３は
弾性体３の分割体３ａと一体に成形されている。A pair of inward projections 7 provided on the inner peripheral side of the outer cylinder 2 by being displaced by 180 degrees are embedded in the elastic projections 13 made of a rubber-like elastic material. And a stopper plate 14 made of a rigid material, and the inner surface of the elastic protrusion 13 faces the outer peripheral surface of the outer ring 11 with a predetermined gap. The elastic protrusion 13 is formed in an arc shape concentric with the outer ring 11, and has a stopper plate 14
Is also formed in an arc shape concentric with the outer ring 11. The elastic protrusion 13 and the stopper plate 14 are each divided into two parts in the axial direction, and in particular, the elastic protrusion 13 is formed integrally with the divided body 3a of the elastic body 3.
【００１８】また弾性体３の各分割体３ａは環状であ
り、よって弾性体３の内側（分割体３ａ同士の間）に環
状の液室１５が設けられており、この液室１５内に、上
記したストッパ５が配置されるとともに粘性流体等の作
動液１６が封入されている。Further, each divided body 3a of the elastic body 3 is annular, and therefore, an annular liquid chamber 15 is provided inside the elastic body 3 (between the divided bodies 3a), and in this liquid chamber 15, The above-mentioned stopper 5 is arranged and a working fluid 16 such as a viscous fluid is enclosed.
【００１９】上記構成を備えた防振ブッシュにおいて
は、ストッパ組立体６の弾性部材９に予圧縮を与える以
前の状態、すなわち各バッファプレート１０の外周側に
アウターリング１１を嵌着する以前の状態において、図
上上下に位置する一対の弾性部材９の分割体９ａ，９ｂ
の肉厚ｔ1 が、図上左右に位置する他の一対の分割体９
ｃ，９ｄの肉厚ｔ2 より大きく設定されている。したが
って、この弾性部材９に予圧縮を与え、すなわち各バッ
ファプレート１０の外周側に所定の締め代をもってアウ
ターリング１１を嵌着すると、弾性部材９が全周に亙っ
て均一な径方向幅となるまで径方向に圧縮されるため
に、図上上下の分割体９ａ，９ｂの圧縮率が図上左右の
分割体９ｃ，９ｄの圧縮率より大きくなる。そして、こ
の図上上下の分割体９ａ，９ｂを上下方向（Ｑ方向）、
図上左右の分割体９ｃ，９ｄを前後方向（Ｐ方向）に配
置して当該ブッシュを懸架装置に装着すると、上下方向
（Ｑ方向）について弾性部材９が比較的硬くて、前後方
向（Ｐ方向）についての圧縮率を大きくしなくても、前
後方向（Ｐ方向）に対して大きな保持力を発揮する。し
たがって前後方向（Ｐ方向）についての圧縮率が比較的
小さなこの弾性部材９に対して、前後方向（Ｐ方向）か
ら荷重入力が作用することになるために、弾性部材９が
局部的に過度に圧縮されるのを防止することができ、こ
れに伴って弾性部材９、延てはストッパ５の耐久性を向
上させることができる。In the vibration-proof bush having the above structure, the state before the elastic member 9 of the stopper assembly 6 is pre-compressed, that is, the state before the outer ring 11 is fitted on the outer peripheral side of each buffer plate 10. In the figure, the divided bodies 9a and 9b of the pair of elastic members 9 located at the top and bottom in the drawing are shown.
The thickness t 1 of the other pair of other divided bodies 9 located on the left and right in the figure
It is set to be larger than the wall thickness t 2 of c and 9d. Therefore, when the elastic member 9 is pre-compressed, that is, when the outer ring 11 is fitted on the outer peripheral side of each buffer plate 10 with a predetermined tightening margin, the elastic member 9 has a uniform radial width over the entire circumference. Since it is compressed in the radial direction until that time, the compression rates of the upper and lower divided bodies 9a and 9b in the figure become larger than the compression rates of the left and right divided bodies 9c and 9d in the figure. Then, the upper and lower divided bodies 9a and 9b in the figure are arranged in the vertical direction (Q direction),
When the left and right divided bodies 9c and 9d are arranged in the front-rear direction (P direction) and the bush is attached to the suspension device, the elastic member 9 is relatively hard in the up-down direction (Q direction) and the front-rear direction (P direction). ), A large holding force is exhibited in the front-back direction (P direction) without increasing the compression rate. Therefore, a load input acts from the front-rear direction (P direction) on the elastic member 9 having a relatively small compression rate in the front-rear direction (P direction), so that the elastic member 9 is locally excessive. It can be prevented from being compressed, and accordingly, the durability of the elastic member 9 and thus the stopper 5 can be improved.
【００２０】また上記構成を備えた防振ブッシュは液体
封入式の防振ブッシュであって、作動液１６の流動抵抗
（液柱共振現象）による防振作用を奏し、具体的には、
作動液１６がアウターリング１１と弾性凸部１３の間の
隘路（間隙）を移動する際に流動抵抗を生じ、この抵抗
により防振作用を奏する。The vibration-proof bushing having the above-mentioned structure is a liquid-filled type vibration-proof bushing, which has a vibration-proof function due to the flow resistance of the hydraulic fluid 16 (liquid column resonance phenomenon).
When the hydraulic fluid 16 moves in the narrow path (gap) between the outer ring 11 and the elastic convex portion 13, a flow resistance is generated, and this resistance provides a vibration damping effect.
【００２１】[0021]
【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.
【００２２】すなわち、上記構成を備えた本発明の請求
項１による防振ブッシュにおいては、前後方向（Ｐ方
向）についての圧縮率が比較的小さな弾性部材に対し
て、前後方向（Ｐ方向）から荷重入力が作用することに
なるために、弾性部材が局部的に過度に圧縮されるのを
防止することができ、これに伴って弾性部材、延てはス
トッパの耐久性を向上させることができる。また請求項
２による防振ブッシュにおいては、これに加えて、作動
液の流動抵抗による防振効果を得ることができる。That is, in the vibration isolating bush according to claim 1 of the present invention having the above-mentioned structure, the elastic member having a relatively small compression rate in the front-rear direction (P direction) is applied in the front-rear direction (P direction). Since the load input acts, the elastic member can be prevented from being locally excessively compressed, and the durability of the elastic member and, by extension, the stopper can be improved accordingly. . Further, in the vibration damping bush according to the second aspect, in addition to this, the vibration damping effect due to the flow resistance of the hydraulic fluid can be obtained.
【図１】本発明の実施例に係る防振ブッシュの断面図で
あって、図２におけるＢ−Ｏ−Ｂ線断面図FIG. 1 is a cross-sectional view of an anti-vibration bush according to an embodiment of the present invention, which is a cross-sectional view taken along the line B-O-B in FIG. 2.
【図２】図１におけるＡ−Ａ線断面図FIG. 2 is a sectional view taken along line AA in FIG.
【図３】（Ａ）（Ｂ）とも、ストッパ組立体の製造手順
を示す断面図FIG. 3A and FIG. 3B are cross-sectional views showing a procedure for manufacturing the stopper assembly.
【図４】自動車の懸架装置の概略斜視図FIG. 4 is a schematic perspective view of a suspension system for an automobile.
【図５】従来例に係る防振ブッシュの断面図FIG. 5 is a sectional view of an anti-vibration bush according to a conventional example.
【図６】ストッパ組立体の半裁断面図FIG. 6 is a half sectional view of a stopper assembly.
【図７】同組立体の作動状態を示す半裁断面図FIG. 7 is a half-cut sectional view showing an operating state of the assembly.
１ 内筒 １ａ，３ａ，９ａ，９ｂ，９ｃ，９ｄ 分割体 １ｂ 環状段部 ２ 外筒 ３ 弾性体 ４ 外環 ５ ストッパ ６ ストッパ組立体 ７ 内向き凸部 ８ ストッパリング ９ 弾性部材 １０，１０ａ，１０ｂ，１０ｃ，１０ｄ バッファプレ
ート １１ アウターリング １２ すぐり部 １３ 弾性凸部 １４ ストッパプレート １５ 液室 １６ 作動液DESCRIPTION OF SYMBOLS 1 inner cylinder 1a, 3a, 9a, 9b, 9c, 9d division body 1b annular step part 2 outer cylinder 3 elastic body 4 outer ring 5 stopper 6 stopper assembly 7 inward convex portion 8 stopper ring 9 elastic member 10, 10a, 10b, 10c, 10d Buffer plate 11 Outer ring 12 Curled part 13 Elastic convex part 14 Stopper plate 15 Liquid chamber 16 Hydraulic fluid
Claims (2)
製の弾性体（３）を介して接続し、前記両筒（１）
（２）が径方向に相対変位したときに当接作動するスト
ッパ（５）を設けた防振ブッシュにおいて、前記ストッ
パ（５）が、前記内筒（１）の外周側に配置された環状
のストッパ組立体（６）を備えており、前記ストッパ組
立体（６）が、前記内筒（１）の外周側に固定されたス
トッパリング（８）と、前記ストッパリング（８）の外
周側に接着されたゴム状弾性材製の弾性部材（９）と、
前記弾性部材（９）の外周側に接着され、所要数が円周
方向に並べられたバッファプレート（１０）と、前記バ
ッファプレート（１０）の外周側に所定の締め代をもっ
て嵌着されたアウターリング（１１）と、を備えてお
り、前記バッファプレート（１０）の外周側に前記アウ
ターリング（１１）を嵌着する以前の状態において、前
記弾性部材（９）の一の径方向の肉厚（ｔ1 ）が、前記
一の径方向と略直交する他の径方向の肉厚（ｔ2 ）より
大きく設定されていることを特徴とする防振ブッシュ。1. An inner cylinder (1) and an outer cylinder (2) are connected via an elastic body (3) made of a rubber-like elastic material, and the both cylinders (1) are connected.
In a vibration-proof bush provided with a stopper (5) that abuts when (2) is relatively displaced in the radial direction, the stopper (5) is an annular shape arranged on the outer peripheral side of the inner cylinder (1). A stopper assembly (6) is provided, and the stopper assembly (6) is attached to the stopper ring (8) fixed to the outer peripheral side of the inner cylinder (1) and to the outer peripheral side of the stopper ring (8). An elastic member (9) made of a rubber-like elastic material that is bonded,
A buffer plate (10) adhered to the outer peripheral side of the elastic member (9) and arranged in a required number in the circumferential direction, and an outer member fitted to the outer peripheral side of the buffer plate (10) with a predetermined interference. A ring (11), and in a state before the outer ring (11) is fitted to the outer peripheral side of the buffer plate (10), the radial thickness of the elastic member (9) in the radial direction. An anti-vibration bush, wherein (t 1 ) is set to be larger than a wall thickness (t 2 ) in another radial direction substantially orthogonal to the one radial direction.
体（３）の内側に液室（１５）が設けられ、前記液室
（１５）内にストッパ（５）が配置されるとともに作動
液（１６）が封入されていることを特徴とする防振ブッ
シュ。2. The vibration-proof bushing according to claim 1, wherein a liquid chamber (15) is provided inside the elastic body (3), and a stopper (5) is arranged in the liquid chamber (15) and the working liquid is provided. An anti-vibration bush characterized in that (16) is enclosed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27427094A JP3501177B2 (en) | 1994-10-14 | 1994-10-14 | Anti-vibration bush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27427094A JP3501177B2 (en) | 1994-10-14 | 1994-10-14 | Anti-vibration bush |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08114246A true JPH08114246A (en) | 1996-05-07 |
| JP3501177B2 JP3501177B2 (en) | 2004-03-02 |
Family
ID=17539325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27427094A Expired - Fee Related JP3501177B2 (en) | 1994-10-14 | 1994-10-14 | Anti-vibration bush |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3501177B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2747167A1 (en) * | 1996-04-06 | 1997-10-10 | Boge Gmbh | RUBBER SUPPORT WITH HYDRAULIC DAMPING |
| JP2003240036A (en) * | 2001-12-10 | 2003-08-27 | Tokai Rubber Ind Ltd | Vibration control bush |
| JP2010270874A (en) * | 2009-05-25 | 2010-12-02 | Bridgestone Corp | Vibration-proofing device |
-
1994
- 1994-10-14 JP JP27427094A patent/JP3501177B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2747167A1 (en) * | 1996-04-06 | 1997-10-10 | Boge Gmbh | RUBBER SUPPORT WITH HYDRAULIC DAMPING |
| JP2003240036A (en) * | 2001-12-10 | 2003-08-27 | Tokai Rubber Ind Ltd | Vibration control bush |
| US7357379B2 (en) | 2001-12-10 | 2008-04-15 | Tokai Rubber Industries, Ltd. | Vibration isolating bushing |
| JP2010270874A (en) * | 2009-05-25 | 2010-12-02 | Bridgestone Corp | Vibration-proofing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3501177B2 (en) | 2004-03-02 |
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